.gitlab-ci.yml

@@ -2,8 +2,11 @@ image: $CI_REGISTRY/vlasami6/fmltest:master
 test:
   script:
-    - meson setup build
+    - meson setup build -D b_sanitize=address,undefined
     - meson compile -C build
-    - cppcheck --error-exitcode=1 *.c
-    - env FML="$(readlink -f ./build/fml)" FML_REF_BC_INT=/cfml/fml /FMLtest/suite ast_interpret
-        hello_world.fml
+    - cppcheck --error-exitcode=1 src/*.c
+    - export ASAN_OPTIONS=symbolize=1:debug=1:detect_leaks=1:strict_string_checks=1:detect_stack_use_after_return=1:check_initialization_order=1:strict_init_order=1
+    - export FML="$(readlink -f ./build/fml)"
+    - export FML_REF=/cfml/fml
+    - /FMLtest/suite ast_interpret
+        hello_world

dynasm/dasm_proto.h

+/*
+** DynASM encoding engine prototypes.
+** Copyright (C) 2005-2022 Mike Pall. All rights reserved.
+** Released under the MIT license. See dynasm.lua for full copyright notice.
+*/
+
+#ifndef _DASM_PROTO_H
+#define _DASM_PROTO_H
+
+#include <stddef.h>
+#include <stdarg.h>
+
+#define DASM_IDENT	"DynASM 1.5.0"
+#define DASM_VERSION	10500	/* 1.5.0 */
+
+#ifndef Dst_DECL
+#define Dst_DECL	dasm_State **Dst
+#endif
+
+#ifndef Dst_REF
+#define Dst_REF		(*Dst)
+#endif
+
+#ifndef DASM_FDEF
+#define DASM_FDEF	extern
+#endif
+
+#ifndef DASM_M_GROW
+#define DASM_M_GROW(ctx, t, p, sz, need) \
+  do { \
+    size_t _sz = (sz), _need = (need); \
+    if (_sz < _need) { \
+      if (_sz < 16) _sz = 16; \
+      while (_sz < _need) _sz += _sz; \
+      (p) = (t *)realloc((p), _sz); \
+      if ((p) == NULL) exit(1); \
+      (sz) = _sz; \
+    } \
+  } while(0)
+#endif
+
+#ifndef DASM_M_FREE
+#define DASM_M_FREE(ctx, p, sz)	free(p)
+#endif
+
+/* Internal DynASM encoder state. */
+typedef struct dasm_State dasm_State;
+
+
+/* Initialize and free DynASM state. */
+DASM_FDEF void dasm_init(Dst_DECL, int maxsection);
+DASM_FDEF void dasm_free(Dst_DECL);
+
+/* Setup global array. Must be called before dasm_setup(). */
+DASM_FDEF void dasm_setupglobal(Dst_DECL, void **gl, unsigned int maxgl);
+
+/* Grow PC label array. Can be called after dasm_setup(), too. */
+DASM_FDEF void dasm_growpc(Dst_DECL, unsigned int maxpc);
+
+/* Setup encoder. */
+DASM_FDEF void dasm_setup(Dst_DECL, const void *actionlist);
+
+/* Feed encoder with actions. Calls are generated by pre-processor. */
+DASM_FDEF void dasm_put(Dst_DECL, int start, ...);
+
+/* Link sections and return the resulting size. */
+DASM_FDEF int dasm_link(Dst_DECL, size_t *szp);
+
+/* Encode sections into buffer. */
+DASM_FDEF int dasm_encode(Dst_DECL, void *buffer);
+
+/* Get PC label offset. */
+DASM_FDEF int dasm_getpclabel(Dst_DECL, unsigned int pc);
+
+#ifdef DASM_CHECKS
+/* Optional sanity checker to call between isolated encoding steps. */
+DASM_FDEF int dasm_checkstep(Dst_DECL, int secmatch);
+#else
+#define dasm_checkstep(a, b)	0
+#endif
+
+
+#endif /* _DASM_PROTO_H */

dynasm/dasm_x64.lua

+------------------------------------------------------------------------------
+-- DynASM x64 module.
+--
+-- Copyright (C) 2005-2022 Mike Pall. All rights reserved.
+-- See dynasm.lua for full copyright notice.
+------------------------------------------------------------------------------
+-- This module just sets 64 bit mode for the combined x86/x64 module.
+-- All the interesting stuff is there.
+------------------------------------------------------------------------------
+
+x64 = true -- Using a global is an ugly, but effective solution.
+return require("dasm_x86")

dynasm/dasm_x86.h

+/*
+** DynASM x86 encoding engine.
+** Copyright (C) 2005-2022 Mike Pall. All rights reserved.
+** Released under the MIT license. See dynasm.lua for full copyright notice.
+*/
+
+#include <stddef.h>
+#include <stdarg.h>
+#include <string.h>
+#include <stdlib.h>
+
+#define DASM_ARCH		"x86"
+
+#ifndef DASM_EXTERN
+#define DASM_EXTERN(a,b,c,d)	0
+#endif
+
+/* Action definitions. DASM_STOP must be 255. */
+enum {
+  DASM_DISP = 233,
+  DASM_IMM_S, DASM_IMM_B, DASM_IMM_W, DASM_IMM_D, DASM_IMM_WB, DASM_IMM_DB,
+  DASM_VREG, DASM_SPACE, DASM_SETLABEL, DASM_REL_A, DASM_REL_LG, DASM_REL_PC,
+  DASM_IMM_LG, DASM_IMM_PC, DASM_LABEL_LG, DASM_LABEL_PC, DASM_ALIGN,
+  DASM_EXTERN, DASM_ESC, DASM_MARK, DASM_SECTION, DASM_STOP
+};
+
+/* Maximum number of section buffer positions for a single dasm_put() call. */
+#define DASM_MAXSECPOS		25
+
+/* DynASM encoder status codes. Action list offset or number are or'ed in. */
+#define DASM_S_OK		0x00000000
+#define DASM_S_NOMEM		0x01000000
+#define DASM_S_PHASE		0x02000000
+#define DASM_S_MATCH_SEC	0x03000000
+#define DASM_S_RANGE_I		0x11000000
+#define DASM_S_RANGE_SEC	0x12000000
+#define DASM_S_RANGE_LG		0x13000000
+#define DASM_S_RANGE_PC		0x14000000
+#define DASM_S_RANGE_VREG	0x15000000
+#define DASM_S_UNDEF_L		0x21000000
+#define DASM_S_UNDEF_PC		0x22000000
+
+/* Macros to convert positions (8 bit section + 24 bit index). */
+#define DASM_POS2IDX(pos)	((pos)&0x00ffffff)
+#define DASM_POS2BIAS(pos)	((pos)&0xff000000)
+#define DASM_SEC2POS(sec)	((sec)<<24)
+#define DASM_POS2SEC(pos)	((pos)>>24)
+#define DASM_POS2PTR(D, pos)	(D->sections[DASM_POS2SEC(pos)].rbuf + (pos))
+
+/* Action list type. */
+typedef const unsigned char *dasm_ActList;
+
+/* Per-section structure. */
+typedef struct dasm_Section {
+  int *rbuf;		/* Biased buffer pointer (negative section bias). */
+  int *buf;		/* True buffer pointer. */
+  size_t bsize;		/* Buffer size in bytes. */
+  int pos;		/* Biased buffer position. */
+  int epos;		/* End of biased buffer position - max single put. */
+  int ofs;		/* Byte offset into section. */
+} dasm_Section;
+
+/* Core structure holding the DynASM encoding state. */
+struct dasm_State {
+  size_t psize;			/* Allocated size of this structure. */
+  dasm_ActList actionlist;	/* Current actionlist pointer. */
+  int *lglabels;		/* Local/global chain/pos ptrs. */
+  size_t lgsize;
+  int *pclabels;		/* PC label chains/pos ptrs. */
+  size_t pcsize;
+  void **globals;		/* Array of globals (bias -10). */
+  dasm_Section *section;	/* Pointer to active section. */
+  size_t codesize;		/* Total size of all code sections. */
+  int maxsection;		/* 0 <= sectionidx < maxsection. */
+  int status;			/* Status code. */
+  dasm_Section sections[1];	/* All sections. Alloc-extended. */
+};
+
+/* The size of the core structure depends on the max. number of sections. */
+#define DASM_PSZ(ms)	(sizeof(dasm_State)+(ms-1)*sizeof(dasm_Section))
+
+
+/* Initialize DynASM state. */
+void dasm_init(Dst_DECL, int maxsection)
+{
+  dasm_State *D;
+  size_t psz = 0;
+  int i;
+  Dst_REF = NULL;
+  DASM_M_GROW(Dst, struct dasm_State, Dst_REF, psz, DASM_PSZ(maxsection));
+  D = Dst_REF;
+  D->psize = psz;
+  D->lglabels = NULL;
+  D->lgsize = 0;
+  D->pclabels = NULL;
+  D->pcsize = 0;
+  D->globals = NULL;
+  D->maxsection = maxsection;
+  for (i = 0; i < maxsection; i++) {
+    D->sections[i].buf = NULL;  /* Need this for pass3. */
+    D->sections[i].rbuf = D->sections[i].buf - DASM_SEC2POS(i);
+    D->sections[i].bsize = 0;
+    D->sections[i].epos = 0;  /* Wrong, but is recalculated after resize. */
+  }
+}
+
+/* Free DynASM state. */
+void dasm_free(Dst_DECL)
+{
+  dasm_State *D = Dst_REF;
+  int i;
+  for (i = 0; i < D->maxsection; i++)
+    if (D->sections[i].buf)
+      DASM_M_FREE(Dst, D->sections[i].buf, D->sections[i].bsize);
+  if (D->pclabels) DASM_M_FREE(Dst, D->pclabels, D->pcsize);
+  if (D->lglabels) DASM_M_FREE(Dst, D->lglabels, D->lgsize);
+  DASM_M_FREE(Dst, D, D->psize);
+}
+
+/* Setup global label array. Must be called before dasm_setup(). */
+void dasm_setupglobal(Dst_DECL, void **gl, unsigned int maxgl)
+{
+  dasm_State *D = Dst_REF;
+  D->globals = gl - 10;  /* Negative bias to compensate for locals. */
+  DASM_M_GROW(Dst, int, D->lglabels, D->lgsize, (10+maxgl)*sizeof(int));
+}
+
+/* Grow PC label array. Can be called after dasm_setup(), too. */
+void dasm_growpc(Dst_DECL, unsigned int maxpc)
+{
+  dasm_State *D = Dst_REF;
+  size_t osz = D->pcsize;
+  DASM_M_GROW(Dst, int, D->pclabels, D->pcsize, maxpc*sizeof(int));
+  memset((void *)(((unsigned char *)D->pclabels)+osz), 0, D->pcsize-osz);
+}
+
+/* Setup encoder. */
+void dasm_setup(Dst_DECL, const void *actionlist)
+{
+  dasm_State *D = Dst_REF;
+  int i;
+  D->actionlist = (dasm_ActList)actionlist;
+  D->status = DASM_S_OK;
+  D->section = &D->sections[0];
+  if (D->lgsize) memset((void *)D->lglabels, 0, D->lgsize);
+  if (D->pclabels) memset((void *)D->pclabels, 0, D->pcsize);
+  for (i = 0; i < D->maxsection; i++) {
+    D->sections[i].pos = DASM_SEC2POS(i);
+    D->sections[i].ofs = 0;
+  }
+}
+
+
+#ifdef DASM_CHECKS
+#define CK(x, st) \
+  do { if (!(x)) { \
+    D->status = DASM_S_##st|(int)(p-D->actionlist-1); return; } } while (0)
+#define CKPL(kind, st) \
+  do { if ((size_t)((char *)pl-(char *)D->kind##labels) >= D->kind##size) { \
+    D->status=DASM_S_RANGE_##st|(int)(p-D->actionlist-1); return; } } while (0)
+#else
+#define CK(x, st)	((void)0)
+#define CKPL(kind, st)	((void)0)
+#endif
+
+/* Pass 1: Store actions and args, link branches/labels, estimate offsets. */
+void dasm_put(Dst_DECL, int start, ...)
+{
+  va_list ap;
+  dasm_State *D = Dst_REF;
+  dasm_ActList p = D->actionlist + start;
+  dasm_Section *sec = D->section;
+  int pos = sec->pos, ofs = sec->ofs, mrm = -1;
+  int *b;
+
+  if (pos >= sec->epos) {
+    DASM_M_GROW(Dst, int, sec->buf, sec->bsize,
+      sec->bsize + 2*DASM_MAXSECPOS*sizeof(int));
+    sec->rbuf = sec->buf - DASM_POS2BIAS(pos);
+    sec->epos = (int)sec->bsize/sizeof(int) - DASM_MAXSECPOS+DASM_POS2BIAS(pos);
+  }
+
+  b = sec->rbuf;
+  b[pos++] = start;
+
+  va_start(ap, start);
+  while (1) {
+    int action = *p++;
+    if (action < DASM_DISP) {
+      ofs++;
+    } else if (action <= DASM_REL_A) {
+      int n = va_arg(ap, int);
+      b[pos++] = n;
+      switch (action) {
+      case DASM_DISP:
+	if (n == 0) { if (mrm < 0) mrm = p[-2]; if ((mrm&7) != 5) break; }
+	/* fallthrough */
+      case DASM_IMM_DB: if (((n+128)&-256) == 0) goto ob; /* fallthrough */
+      case DASM_REL_A: /* Assumes ptrdiff_t is int. !x64 */
+      case DASM_IMM_D: ofs += 4; break;
+      case DASM_IMM_S: CK(((n+128)&-256) == 0, RANGE_I); goto ob;
+      case DASM_IMM_B: CK((n&-256) == 0, RANGE_I); ob: ofs++; break;
+      case DASM_IMM_WB: if (((n+128)&-256) == 0) goto ob; /* fallthrough */
+      case DASM_IMM_W: CK((n&-65536) == 0, RANGE_I); ofs += 2; break;
+      case DASM_SPACE: p++; ofs += n; break;
+      case DASM_SETLABEL: b[pos-2] = -0x40000000; break;  /* Neg. label ofs. */
+      case DASM_VREG: CK((n&-16) == 0 && (n != 4 || (*p>>5) != 2), RANGE_VREG);
+	if (*p < 0x40 && p[1] == DASM_DISP) mrm = n;
+	if (*p < 0x20 && (n&7) == 4) ofs++;
+	switch ((*p++ >> 3) & 3) {
+	case 3: n |= b[pos-3]; /* fallthrough */
+	case 2: n |= b[pos-2]; /* fallthrough */
+	case 1: if (n <= 7) { b[pos-1] |= 0x10; ofs--; }
+	}
+	continue;
+      }
+      mrm = -1;
+    } else {
+      int *pl, n;
+      switch (action) {
+      case DASM_REL_LG:
+      case DASM_IMM_LG:
+	n = *p++; pl = D->lglabels + n;
+	/* Bkwd rel or global. */
+	if (n <= 246) { CK(n>=10||*pl<0, RANGE_LG); CKPL(lg, LG); goto putrel; }
+	pl -= 246; n = *pl;
+	if (n < 0) n = 0;  /* Start new chain for fwd rel if label exists. */
+	goto linkrel;
+      case DASM_REL_PC:
+      case DASM_IMM_PC: pl = D->pclabels + va_arg(ap, int); CKPL(pc, PC);
+      putrel:
+	n = *pl;
+	if (n < 0) {  /* Label exists. Get label pos and store it. */
+	  b[pos] = -n;
+	} else {
+      linkrel:
+	  b[pos] = n;  /* Else link to rel chain, anchored at label. */
+	  *pl = pos;
+	}
+	pos++;
+	ofs += 4;  /* Maximum offset needed. */
+	if (action == DASM_REL_LG || action == DASM_REL_PC) {
+	  b[pos++] = ofs;  /* Store pass1 offset estimate. */
+	} else if (sizeof(ptrdiff_t) == 8) {
+	  ofs += 4;
+	}
+	break;
+      case DASM_LABEL_LG: pl = D->lglabels + *p++; CKPL(lg, LG); goto putlabel;
+      case DASM_LABEL_PC: pl = D->pclabels + va_arg(ap, int); CKPL(pc, PC);
+      putlabel:
+	n = *pl;  /* n > 0: Collapse rel chain and replace with label pos. */
+	while (n > 0) { int *pb = DASM_POS2PTR(D, n); n = *pb; *pb = pos; }
+	*pl = -pos;  /* Label exists now. */
+	b[pos++] = ofs;  /* Store pass1 offset estimate. */
+	break;
+      case DASM_ALIGN:
+	ofs += *p++;  /* Maximum alignment needed (arg is 2**n-1). */
+	b[pos++] = ofs;  /* Store pass1 offset estimate. */
+	break;
+      case DASM_EXTERN: p += 2; ofs += 4; break;
+      case DASM_ESC: p++; ofs++; break;
+      case DASM_MARK: mrm = p[-2]; break;
+      case DASM_SECTION:
+	n = *p; CK(n < D->maxsection, RANGE_SEC); D->section = &D->sections[n];
+      case DASM_STOP: goto stop;
+      }
+    }
+  }
+stop:
+  va_end(ap);
+  sec->pos = pos;
+  sec->ofs = ofs;
+}
+#undef CK
+
+/* Pass 2: Link sections, shrink branches/aligns, fix label offsets. */
+int dasm_link(Dst_DECL, size_t *szp)
+{
+  dasm_State *D = Dst_REF;
+  int secnum;
+  int ofs = 0;
+
+#ifdef DASM_CHECKS
+  *szp = 0;
+  if (D->status != DASM_S_OK) return D->status;
+  {
+    int pc;
+    for (pc = 0; pc*sizeof(int) < D->pcsize; pc++)
+      if (D->pclabels[pc] > 0) return DASM_S_UNDEF_PC|pc;
+  }
+#endif
+
+  { /* Handle globals not defined in this translation unit. */
+    int idx;
+    for (idx = 10; idx*sizeof(int) < D->lgsize; idx++) {
+      int n = D->lglabels[idx];
+      /* Undefined label: Collapse rel chain and replace with marker (< 0). */
+      while (n > 0) { int *pb = DASM_POS2PTR(D, n); n = *pb; *pb = -idx; }
+    }
+  }
+
+  /* Combine all code sections. No support for data sections (yet). */
+  for (secnum = 0; secnum < D->maxsection; secnum++) {
+    dasm_Section *sec = D->sections + secnum;
+    int *b = sec->rbuf;
+    int pos = DASM_SEC2POS(secnum);
+    int lastpos = sec->pos;
+
+    while (pos != lastpos) {
+      dasm_ActList p = D->actionlist + b[pos++];
+      int op = 0;
+      while (1) {
+	int action = *p++;
+	switch (action) {
+	case DASM_REL_LG: p++;
+	  /* fallthrough */
+	case DASM_REL_PC: {
+	  int shrink = op == 0xe9 ? 3 : ((op&0xf0) == 0x80 ? 4 : 0);
+	  if (shrink) {  /* Shrinkable branch opcode? */
+	    int lofs, lpos = b[pos];
+	    if (lpos < 0) goto noshrink;  /* Ext global? */
+	    lofs = *DASM_POS2PTR(D, lpos);
+	    if (lpos > pos) {  /* Fwd label: add cumulative section offsets. */
+	      int i;
+	      for (i = secnum; i < DASM_POS2SEC(lpos); i++)
+		lofs += D->sections[i].ofs;
+	    } else {
+	      lofs -= ofs;  /* Bkwd label: unfix offset. */
+	    }
+	    lofs -= b[pos+1];  /* Short branch ok? */
+	    if (lofs >= -128-shrink && lofs <= 127) ofs -= shrink;  /* Yes. */
+	    else { noshrink: shrink = 0; }  /* No, cannot shrink op. */
+	  }
+	  b[pos+1] = shrink;
+	  pos += 2;
+	  break;
+	}
+	  /* fallthrough */
+	case DASM_SPACE: case DASM_IMM_LG: case DASM_VREG: p++;
+	  /* fallthrough */
+	case DASM_DISP: case DASM_IMM_S: case DASM_IMM_B: case DASM_IMM_W:
+	case DASM_IMM_D: case DASM_IMM_WB: case DASM_IMM_DB:
+	case DASM_SETLABEL: case DASM_REL_A: case DASM_IMM_PC: pos++; break;
+	case DASM_LABEL_LG: p++;
+	  /* fallthrough */
+	case DASM_LABEL_PC: b[pos++] += ofs; break; /* Fix label offset. */
+	case DASM_ALIGN: ofs -= (b[pos++]+ofs)&*p++; break; /* Adjust ofs. */
+	case DASM_EXTERN: p += 2; break;
+	case DASM_ESC: op = *p++; break;
+	case DASM_MARK: break;
+	case DASM_SECTION: case DASM_STOP: goto stop;
+	default: op = action; break;
+	}
+      }
+      stop: (void)0;
+    }
+    ofs += sec->ofs;  /* Next section starts right after current section. */
+  }
+
+  D->codesize = ofs;  /* Total size of all code sections */
+  *szp = ofs;
+  return DASM_S_OK;
+}
+
+#define dasmb(x)	*cp++ = (unsigned char)(x)
+#ifndef DASM_ALIGNED_WRITES
+#define dasmw(x) \
+  do { *((unsigned short *)cp) = (unsigned short)(x); cp+=2; } while (0)
+#define dasmd(x) \
+  do { *((unsigned int *)cp) = (unsigned int)(x); cp+=4; } while (0)
+#define dasmq(x) \
+  do { *((unsigned long long *)cp) = (unsigned long long)(x); cp+=8; } while (0)
+#else
+#define dasmw(x)	do { dasmb(x); dasmb((x)>>8); } while (0)
+#define dasmd(x)	do { dasmw(x); dasmw((x)>>16); } while (0)
+#define dasmq(x)	do { dasmd(x); dasmd((x)>>32); } while (0)
+#endif
+static unsigned char *dasma_(unsigned char *cp, ptrdiff_t x)
+{
+  if (sizeof(ptrdiff_t) == 8)
+    dasmq((unsigned long long)x);
+  else
+    dasmd((unsigned int)x);
+  return cp;
+}
+#define dasma(x)	(cp = dasma_(cp, (x)))
+
+/* Pass 3: Encode sections. */
+int dasm_encode(Dst_DECL, void *buffer)
+{
+  dasm_State *D = Dst_REF;
+  unsigned char *base = (unsigned char *)buffer;
+  unsigned char *cp = base;
+  int secnum;
+
+  /* Encode all code sections. No support for data sections (yet). */
+  for (secnum = 0; secnum < D->maxsection; secnum++) {
+    dasm_Section *sec = D->sections + secnum;
+    int *b = sec->buf;
+    int *endb = sec->rbuf + sec->pos;
+
+    while (b != endb) {
+      dasm_ActList p = D->actionlist + *b++;
+      unsigned char *mark = NULL;
+      while (1) {
+	int action = *p++;
+	int n = (action >= DASM_DISP && action <= DASM_ALIGN) ? *b++ : 0;
+	switch (action) {
+	case DASM_DISP: if (!mark) mark = cp; {
+	  unsigned char *mm = mark;
+	  if (*p != DASM_IMM_DB && *p != DASM_IMM_WB) mark = NULL;
+	  if (n == 0) { int mrm = mm[-1]&7; if (mrm == 4) mrm = mm[0]&7;
+	    if (mrm != 5) { mm[-1] -= 0x80; break; } }
+	  if (((n+128) & -256) != 0) goto wd; else mm[-1] -= 0x40;
+	}
+	  /* fallthrough */
+	case DASM_IMM_S: case DASM_IMM_B: wb: dasmb(n); break;
+	case DASM_IMM_DB: if (((n+128)&-256) == 0) {
+	    db: if (!mark) mark = cp; mark[-2] += 2; mark = NULL; goto wb;
+	  } else mark = NULL;
+	  /* fallthrough */
+	case DASM_IMM_D: wd: dasmd(n); break;
+	case DASM_IMM_WB: if (((n+128)&-256) == 0) goto db; else mark = NULL;
+	  /* fallthrough */
+	case DASM_IMM_W: dasmw(n); break;
+	case DASM_VREG: {
+	  int t = *p++;
+	  unsigned char *ex = cp - (t&7);
+	  if ((n & 8) && t < 0xa0) {
+	    if (*ex & 0x80) ex[1] ^= 0x20 << (t>>6); else *ex ^= 1 << (t>>6);
+	    n &= 7;
+	  } else if (n & 0x10) {
+	    if (*ex & 0x80) {
+	      *ex = 0xc5; ex[1] = (ex[1] & 0x80) | ex[2]; ex += 2;
+	    }
+	    while (++ex < cp) ex[-1] = *ex;
+	    if (mark) mark--;
+	    cp--;
+	    n &= 7;
+	  }
+	  if (t >= 0xc0) n <<= 4;
+	  else if (t >= 0x40) n <<= 3;
+	  else if (n == 4 && t < 0x20) { cp[-1] ^= n; *cp++ = 0x20; }
+	  cp[-1] ^= n;
+	  break;
+	}
+	case DASM_REL_LG: p++; if (n >= 0) goto rel_pc;
+	  b++; n = (int)(ptrdiff_t)D->globals[-n];
+	  /* fallthrough */
+	case DASM_REL_A: rel_a:
+	  n -= (unsigned int)(ptrdiff_t)(cp+4); goto wd; /* !x64 */
+	case DASM_REL_PC: rel_pc: {
+	  int shrink = *b++;
+	  int *pb = DASM_POS2PTR(D, n); if (*pb < 0) { n = pb[1]; goto rel_a; }
+	  n = *pb - ((int)(cp-base) + 4-shrink);
+	  if (shrink == 0) goto wd;
+	  if (shrink == 4) { cp--; cp[-1] = *cp-0x10; } else cp[-1] = 0xeb;
+	  goto wb;
+	}
+	case DASM_IMM_LG:
+	  p++;
+	  if (n < 0) { dasma((ptrdiff_t)D->globals[-n]); break; }
+	  /* fallthrough */
+	case DASM_IMM_PC: {
+	  int *pb = DASM_POS2PTR(D, n);
+	  dasma(*pb < 0 ? (ptrdiff_t)pb[1] : (*pb + (ptrdiff_t)base));
+	  break;
+	}
+	case DASM_LABEL_LG: {
+	  int idx = *p++;
+	  if (idx >= 10)
+	    D->globals[idx] = (void *)(base + (*p == DASM_SETLABEL ? *b : n));
+	  break;
+	}
+	case DASM_LABEL_PC: case DASM_SETLABEL: break;
+	case DASM_SPACE: { int fill = *p++; while (n--) *cp++ = fill; break; }
+	case DASM_ALIGN:
+	  n = *p++;
+	  while (((cp-base) & n)) *cp++ = 0x90; /* nop */
+	  break;
+	case DASM_EXTERN: n = DASM_EXTERN(Dst, cp, p[1], *p); p += 2; goto wd;
+	case DASM_MARK: mark = cp; break;
+	case DASM_ESC: action = *p++;
+	  /* fallthrough */
+	default: *cp++ = action; break;
+	case DASM_SECTION: case DASM_STOP: goto stop;
+	}
+      }
+      stop: (void)0;
+    }
+  }
+
+  if (base + D->codesize != cp)  /* Check for phase errors. */
+    return DASM_S_PHASE;
+  return DASM_S_OK;
+}
+
+/* Get PC label offset. */
+int dasm_getpclabel(Dst_DECL, unsigned int pc)
+{
+  dasm_State *D = Dst_REF;
+  if (pc*sizeof(int) < D->pcsize) {
+    int pos = D->pclabels[pc];
+    if (pos < 0) return *DASM_POS2PTR(D, -pos);
+    if (pos > 0) return -1;  /* Undefined. */
+  }
+  return -2;  /* Unused or out of range. */
+}
+
+#ifdef DASM_CHECKS
+/* Optional sanity checker to call between isolated encoding steps. */
+int dasm_checkstep(Dst_DECL, int secmatch)
+{
+  dasm_State *D = Dst_REF;
+  if (D->status == DASM_S_OK) {
+    int i;
+    for (i = 1; i <= 9; i++) {
+      if (D->lglabels[i] > 0) { D->status = DASM_S_UNDEF_L|i; break; }
+      D->lglabels[i] = 0;
+    }
+  }
+  if (D->status == DASM_S_OK && secmatch >= 0 &&
+      D->section != &D->sections[secmatch])
+    D->status = DASM_S_MATCH_SEC|(int)(D->section-D->sections);
+  return D->status;
+}
+#endif
+

dynasm/dasm_x86.lua

+------------------------------------------------------------------------------
+-- DynASM x86/x64 module.
+--
+-- Copyright (C) 2005-2022 Mike Pall. All rights reserved.
+-- See dynasm.lua for full copyright notice.
+------------------------------------------------------------------------------
+
+local x64 = x64
+
+-- Module information:
+local _info = {
+  arch =	x64 and "x64" or "x86",
+  description =	"DynASM x86/x64 module",
+  version =	"1.5.0",
+  vernum =	 10500,
+  release =	"2021-05-02",
+  author =	"Mike Pall",
+  license =	"MIT",
+}
+
+-- Exported glue functions for the arch-specific module.
+local _M = { _info = _info }
+
+-- Cache library functions.
+local type, tonumber, pairs, ipairs = type, tonumber, pairs, ipairs
+local assert, unpack, setmetatable = assert, unpack or table.unpack, setmetatable
+local _s = string
+local sub, format, byte, char = _s.sub, _s.format, _s.byte, _s.char
+local find, match, gmatch, gsub = _s.find, _s.match, _s.gmatch, _s.gsub
+local concat, sort, remove = table.concat, table.sort, table.remove
+local bit = bit or require("bit")
+local band, bxor, shl, shr = bit.band, bit.bxor, bit.lshift, bit.rshift
+
+-- Inherited tables and callbacks.
+local g_opt, g_arch
+local wline, werror, wfatal, wwarn
+
+-- Action name list.
+-- CHECK: Keep this in sync with the C code!
+local action_names = {
+  -- int arg, 1 buffer pos:
+  "DISP",  "IMM_S", "IMM_B", "IMM_W", "IMM_D",  "IMM_WB", "IMM_DB",
+  -- action arg (1 byte), int arg, 1 buffer pos (reg/num):
+  "VREG", "SPACE",
+  -- ptrdiff_t arg, 1 buffer pos (address): !x64
+  "SETLABEL", "REL_A",
+  -- action arg (1 byte) or int arg, 2 buffer pos (link, offset):
+  "REL_LG", "REL_PC",
+  -- action arg (1 byte) or int arg, 1 buffer pos (link):
+  "IMM_LG", "IMM_PC",
+  -- action arg (1 byte) or int arg, 1 buffer pos (offset):
+  "LABEL_LG", "LABEL_PC",
+  -- action arg (1 byte), 1 buffer pos (offset):
+  "ALIGN",
+  -- action args (2 bytes), no buffer pos.
+  "EXTERN",
+  -- action arg (1 byte), no buffer pos.
+  "ESC",
+  -- no action arg, no buffer pos.
+  "MARK",
+  -- action arg (1 byte), no buffer pos, terminal action:
+  "SECTION",
+  -- no args, no buffer pos, terminal action:
+  "STOP"
+}
+
+-- Maximum number of section buffer positions for dasm_put().
+-- CHECK: Keep this in sync with the C code!
+local maxsecpos = 25 -- Keep this low, to avoid excessively long C lines.
+
+-- Action name -> action number (dynamically generated below).
+local map_action = {}
+-- First action number. Everything below does not need to be escaped.
+local actfirst = 256-#action_names
+
+-- Action list buffer and string (only used to remove dupes).
+local actlist = {}
+local actstr = ""
+
+-- Argument list for next dasm_put(). Start with offset 0 into action list.
+local actargs = { 0 }
+
+-- Current number of section buffer positions for dasm_put().
+local secpos = 1
+
+-- VREG kind encodings, pre-shifted by 5 bits.
+local map_vreg = {
+  ["modrm.rm.m"] = 0x00,
+  ["modrm.rm.r"] = 0x20,
+  ["opcode"] =     0x20,
+  ["sib.base"] =   0x20,
+  ["sib.index"] =  0x40,
+  ["modrm.reg"] =  0x80,
+  ["vex.v"] =      0xa0,
+  ["imm.hi"] =     0xc0,
+}
+
+-- Current number of VREG actions contributing to REX/VEX shrinkage.
+local vreg_shrink_count = 0
+
+------------------------------------------------------------------------------
+
+-- Compute action numbers for action names.
+for n,name in ipairs(action_names) do
+  local num = actfirst + n - 1
+  map_action[name] = num
+end
+
+-- Dump action names and numbers.
+local function dumpactions(out)
+  out:write("DynASM encoding engine action codes:\n")
+  for n,name in ipairs(action_names) do
+    local num = map_action[name]
+    out:write(format("  %-10s %02X  %d\n", name, num, num))
+  end
+  out:write("\n")
+end
+
+-- Write action list buffer as a huge static C array.
+local function writeactions(out, name)
+  local nn = #actlist
+  local last = actlist[nn] or 255
+  actlist[nn] = nil -- Remove last byte.
+  if nn == 0 then nn = 1 end
+  out:write("static const unsigned char ", name, "[", nn, "] = {\n")
+  local s = "  "
+  for n,b in ipairs(actlist) do
+    s = s..b..","
+    if #s >= 75 then
+      assert(out:write(s, "\n"))
+      s = "  "
+    end
+  end
+  out:write(s, last, "\n};\n\n") -- Add last byte back.
+end
+
+------------------------------------------------------------------------------
+
+-- Add byte to action list.
+local function wputxb(n)
+  assert(n >= 0 and n <= 255 and n % 1 == 0, "byte out of range")
+  actlist[#actlist+1] = n
+end
+
+-- Add action to list with optional arg. Advance buffer pos, too.
+local function waction(action, a, num)
+  wputxb(assert(map_action[action], "bad action name `"..action.."'"))
+  if a then actargs[#actargs+1] = a end
+  if a or num then secpos = secpos + (num or 1) end
+end
+
+-- Optionally add a VREG action.
+local function wvreg(kind, vreg, psz, sk, defer)
+  if not vreg then return end
+  waction("VREG", vreg)
+  local b = assert(map_vreg[kind], "bad vreg kind `"..vreg.."'")
+  if b < (sk or 0) then
+    vreg_shrink_count = vreg_shrink_count + 1
+  end
+  if not defer then
+    b = b + vreg_shrink_count * 8
+    vreg_shrink_count = 0
+  end
+  wputxb(b + (psz or 0))
+end
+
+-- Add call to embedded DynASM C code.
+local function wcall(func, args)
+  wline(format("dasm_%s(Dst, %s);", func, concat(args, ", ")), true)
+end
+
+-- Delete duplicate action list chunks. A tad slow, but so what.
+local function dedupechunk(offset)
+  local al, as = actlist, actstr
+  local chunk = char(unpack(al, offset+1, #al))
+  local orig = find(as, chunk, 1, true)
+  if orig then
+    actargs[1] = orig-1 -- Replace with original offset.
+    for i=offset+1,#al do al[i] = nil end -- Kill dupe.
+  else
+    actstr = as..chunk
+  end
+end
+
+-- Flush action list (intervening C code or buffer pos overflow).
+local function wflush(term)
+  local offset = actargs[1]
+  if #actlist == offset then return end -- Nothing to flush.
+  if not term then waction("STOP") end -- Terminate action list.
+  dedupechunk(offset)
+  wcall("put", actargs) -- Add call to dasm_put().
+  actargs = { #actlist } -- Actionlist offset is 1st arg to next dasm_put().
+  secpos = 1 -- The actionlist offset occupies a buffer position, too.
+end
+
+-- Put escaped byte.
+local function wputb(n)
+  if n >= actfirst then waction("ESC") end -- Need to escape byte.
+  wputxb(n)
+end
+
+------------------------------------------------------------------------------
+
+-- Global label name -> global label number. With auto assignment on 1st use.
+local next_global = 10
+local map_global = setmetatable({}, { __index = function(t, name)
+  if not match(name, "^[%a_][%w_@]*$") then werror("bad global label") end
+  local n = next_global
+  if n > 246 then werror("too many global labels") end
+  next_global = n + 1
+  t[name] = n
+  return n
+end})
+
+-- Dump global labels.
+local function dumpglobals(out, lvl)
+  local t = {}
+  for name, n in pairs(map_global) do t[n] = name end
+  out:write("Global labels:\n")
+  for i=10,next_global-1 do
+    out:write(format("  %s\n", t[i]))
+  end
+  out:write("\n")
+end
+
+-- Write global label enum.
+local function writeglobals(out, prefix)
+  local t = {}
+  for name, n in pairs(map_global) do t[n] = name end
+  out:write("enum {\n")
+  for i=10,next_global-1 do
+    out:write("  ", prefix, gsub(t[i], "@.*", ""), ",\n")
+  end
+  out:write("  ", prefix, "_MAX\n};\n")
+end
+
+-- Write global label names.
+local function writeglobalnames(out, name)
+  local t = {}
+  for name, n in pairs(map_global) do t[n] = name end
+  out:write("static const char *const ", name, "[] = {\n")
+  for i=10,next_global-1 do
+    out:write("  \"", t[i], "\",\n")
+  end
+  out:write("  (const char *)0\n};\n")
+end
+
+------------------------------------------------------------------------------
+
+-- Extern label name -> extern label number. With auto assignment on 1st use.
+local next_extern = -1
+local map_extern = setmetatable({}, { __index = function(t, name)
+  -- No restrictions on the name for now.
+  local n = next_extern
+  if n < -256 then werror("too many extern labels") end
+  next_extern = n - 1
+  t[name] = n
+  return n
+end})
+
+-- Dump extern labels.
+local function dumpexterns(out, lvl)
+  local t = {}
+  for name, n in pairs(map_extern) do t[-n] = name end
+  out:write("Extern labels:\n")
+  for i=1,-next_extern-1 do
+    out:write(format("  %s\n", t[i]))
+  end
+  out:write("\n")
+end
+
+-- Write extern label names.
+local function writeexternnames(out, name)
+  local t = {}
+  for name, n in pairs(map_extern) do t[-n] = name end
+  out:write("static DASM_EXTERN_TYPE ", name, "[] = {\n")
+  for i=1,-next_extern-1 do
+    out:write("  DASM_EXTERN_NAME(", t[i], "),\n")
+  end
+  out:write("  DASM_EXTERN_LAST\n};\n")
+end
+
+------------------------------------------------------------------------------
+
+-- Arch-specific maps.
+local map_archdef = {}		-- Ext. register name -> int. name.
+local map_reg_rev = {}		-- Int. register name -> ext. name.
+local map_reg_num = {}		-- Int. register name -> register number.
+local map_reg_opsize = {}	-- Int. register name -> operand size.
+local map_reg_valid_base = {}	-- Int. register name -> valid base register?
+local map_reg_valid_index = {}	-- Int. register name -> valid index register?
+local map_reg_needrex = {}	-- Int. register name -> need rex vs. no rex.
+local reg_list = {}		-- Canonical list of int. register names.
+
+local map_type = {}		-- Type name -> { ctype, reg }
+local ctypenum = 0		-- Type number (for _PTx macros).
+
+local addrsize = x64 and "q" or "d"	-- Size for address operands.
+
+-- Helper functions to fill register maps.
+local function mkrmap(sz, cl, names)
+  local cname = format("@%s", sz)
+  reg_list[#reg_list+1] = cname
+  map_archdef[cl] = cname
+  map_reg_rev[cname] = cl
+  map_reg_num[cname] = -1
+  map_reg_opsize[cname] = sz
+  if sz == addrsize or sz == "d" then
+    map_reg_valid_base[cname] = true
+    map_reg_valid_index[cname] = true
+  end
+  if names then
+    for n,name in ipairs(names) do
+      local iname = format("@%s%x", sz, n-1)
+      reg_list[#reg_list+1] = iname
+      map_archdef[name] = iname
+      map_reg_rev[iname] = name
+      map_reg_num[iname] = n-1
+      map_reg_opsize[iname] = sz
+      if sz == "b" and n > 4 then map_reg_needrex[iname] = false end
+      if sz == addrsize or sz == "d" then
+	map_reg_valid_base[iname] = true
+	map_reg_valid_index[iname] = true
+      end
+    end
+  end
+  for i=0,(x64 and sz ~= "f") and 15 or 7 do
+    local needrex = sz == "b" and i > 3
+    local iname = format("@%s%x%s", sz, i, needrex and "R" or "")
+    if needrex then map_reg_needrex[iname] = true end
+    local name
+    if sz == "o" or sz == "y" then name = format("%s%d", cl, i)
+    elseif sz == "f" then name = format("st%d", i)
+    else name = format("r%d%s", i, sz == addrsize and "" or sz) end
+    map_archdef[name] = iname
+    if not map_reg_rev[iname] then
+      reg_list[#reg_list+1] = iname
+      map_reg_rev[iname] = name
+      map_reg_num[iname] = i
+      map_reg_opsize[iname] = sz
+      if sz == addrsize or sz == "d" then
+	map_reg_valid_base[iname] = true
+	map_reg_valid_index[iname] = true
+      end
+    end
+  end
+  reg_list[#reg_list+1] = ""
+end
+
+-- Integer registers (qword, dword, word and byte sized).
+if x64 then
+  mkrmap("q", "Rq", {"rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi"})
+end
+mkrmap("d", "Rd", {"eax", "ecx", "edx", "ebx", "esp", "ebp", "esi", "edi"})
+mkrmap("w", "Rw", {"ax", "cx", "dx", "bx", "sp", "bp", "si", "di"})
+mkrmap("b", "Rb", {"al", "cl", "dl", "bl", "ah", "ch", "dh", "bh"})
+map_reg_valid_index[map_archdef.esp] = false
+if x64 then map_reg_valid_index[map_archdef.rsp] = false end
+if x64 then map_reg_needrex[map_archdef.Rb] = true end
+map_archdef["Ra"] = "@"..addrsize
+
+-- FP registers (internally tword sized, but use "f" as operand size).
+mkrmap("f", "Rf")
+
+-- SSE registers (oword sized, but qword and dword accessible).
+mkrmap("o", "xmm")
+
+-- AVX registers (yword sized, but oword, qword and dword accessible).
+mkrmap("y", "ymm")
+
+-- Operand size prefixes to codes.
+local map_opsize = {
+  byte = "b", word = "w", dword = "d", qword = "q", oword = "o", yword = "y",
+  tword = "t", aword = addrsize,
+}
+
+-- Operand size code to number.
+local map_opsizenum = {
+  b = 1, w = 2, d = 4, q = 8, o = 16, y = 32, t = 10,
+}
+
+-- Operand size code to name.
+local map_opsizename = {
+  b = "byte", w = "word", d = "dword", q = "qword", o = "oword", y = "yword",
+  t = "tword", f = "fpword",
+}
+
+-- Valid index register scale factors.
+local map_xsc = {
+  ["1"] = 0, ["2"] = 1, ["4"] = 2, ["8"] = 3,
+}
+
+-- Condition codes.
+local map_cc = {
+  o = 0, no = 1, b = 2, nb = 3, e = 4, ne = 5, be = 6, nbe = 7,
+  s = 8, ns = 9, p = 10, np = 11, l = 12, nl = 13, le = 14, nle = 15,
+  c = 2, nae = 2, nc = 3, ae = 3, z = 4, nz = 5, na = 6, a = 7,
+  pe = 10, po = 11, nge = 12, ge = 13, ng = 14, g = 15,
+}
+
+
+-- Reverse defines for registers.
+function _M.revdef(s)
+  return gsub(s, "@%w+", map_reg_rev)
+end
+
+-- Dump register names and numbers
+local function dumpregs(out)
+  out:write("Register names, sizes and internal numbers:\n")
+  for _,reg in ipairs(reg_list) do
+    if reg == "" then
+      out:write("\n")
+    else
+      local name = map_reg_rev[reg]
+      local num = map_reg_num[reg]
+      local opsize = map_opsizename[map_reg_opsize[reg]]
+      out:write(format("  %-5s %-8s %s\n", name, opsize,
+		       num < 0 and "(variable)" or num))
+    end
+  end
+end
+
+------------------------------------------------------------------------------
+
+-- Put action for label arg (IMM_LG, IMM_PC, REL_LG, REL_PC).
+local function wputlabel(aprefix, imm, num)
+  if type(imm) == "number" then
+    if imm < 0 then
+      waction("EXTERN")
+      wputxb(aprefix == "IMM_" and 0 or 1)
+      imm = -imm-1
+    else
+      waction(aprefix.."LG", nil, num);
+    end
+    wputxb(imm)
+  else
+    waction(aprefix.."PC", imm, num)
+  end
+end
+
+-- Put signed byte or arg.
+local function wputsbarg(n)
+  if type(n) == "number" then
+    if n < -128 or n > 127 then
+      werror("signed immediate byte out of range")
+    end
+    if n < 0 then n = n + 256 end
+    wputb(n)
+  else waction("IMM_S", n) end
+end
+
+-- Put unsigned byte or arg.
+local function wputbarg(n)
+  if type(n) == "number" then
+    if n < 0 or n > 255 then
+      werror("unsigned immediate byte out of range")
+    end
+    wputb(n)
+  else waction("IMM_B", n) end
+end
+
+-- Put unsigned word or arg.
+local function wputwarg(n)
+  if type(n) == "number" then
+    if shr(n, 16) ~= 0 then
+      werror("unsigned immediate word out of range")
+    end
+    wputb(band(n, 255)); wputb(shr(n, 8));
+  else waction("IMM_W", n) end
+end
+
+-- Put signed or unsigned dword or arg.
+local function wputdarg(n)
+  local tn = type(n)
+  if tn == "number" then
+    wputb(band(n, 255))
+    wputb(band(shr(n, 8), 255))
+    wputb(band(shr(n, 16), 255))
+    wputb(shr(n, 24))
+  elseif tn == "table" then
+    wputlabel("IMM_", n[1], 1)
+  else
+    waction("IMM_D", n)
+  end
+end
+
+-- Put signed or unsigned qword or arg.
+local function wputqarg(n)
+  local tn = type(n)
+  if tn == "number" then -- This is only used for numbers from -2^31..2^32-1.
+    wputb(band(n, 255))
+    wputb(band(shr(n, 8), 255))
+    wputb(band(shr(n, 16), 255))
+    wputb(shr(n, 24))
+    local sign = n < 0 and 255 or 0
+    wputb(sign); wputb(sign); wputb(sign); wputb(sign)
+  else
+    waction("IMM_D", format("(unsigned int)(%s)", n))
+    waction("IMM_D", format("(unsigned int)((unsigned long long)(%s)>>32)", n))
+  end
+end
+
+-- Put operand-size dependent number or arg (defaults to dword).
+local function wputszarg(sz, n)
+  if not sz or sz == "d" or sz == "q" then wputdarg(n)
+  elseif sz == "w" then wputwarg(n)
+  elseif sz == "b" then wputbarg(n)
+  elseif sz == "s" then wputsbarg(n)
+  else werror("bad operand size") end
+end
+
+-- Put multi-byte opcode with operand-size dependent modifications.
+local function wputop(sz, op, rex, vex, vregr, vregxb)
+  local psz, sk = 0, nil
+  if vex then
+    local tail
+    if vex.m == 1 and band(rex, 11) == 0 then
+      if x64 and vregxb then
+	sk = map_vreg["modrm.reg"]
+      else
+	wputb(0xc5)
+      tail = shl(bxor(band(rex, 4), 4), 5)
+      psz = 3
+      end
+    end
+    if not tail then
+      wputb(0xc4)
+      wputb(shl(bxor(band(rex, 7), 7), 5) + vex.m)
+      tail = shl(band(rex, 8), 4)
+      psz = 4
+    end
+    local reg, vreg = 0, nil
+    if vex.v then
+      reg = vex.v.reg
+      if not reg then werror("bad vex operand") end
+      if reg < 0 then reg = 0; vreg = vex.v.vreg end
+    end
+    if sz == "y" or vex.l then tail = tail + 4 end
+    wputb(tail + shl(bxor(reg, 15), 3) + vex.p)
+    wvreg("vex.v", vreg)
+    rex = 0
+    if op >= 256 then werror("bad vex opcode") end
+  else
+    if rex ~= 0 then
+      if not x64 then werror("bad operand size") end
+    elseif (vregr or vregxb) and x64 then
+      rex = 0x10
+      sk = map_vreg["vex.v"]
+    end
+  end
+  local r
+  if sz == "w" then wputb(102) end
+  -- Needs >32 bit numbers, but only for crc32 eax, word [ebx]
+  if op >= 4294967296 then r = op%4294967296 wputb((op-r)/4294967296) op = r end
+  if op >= 16777216 then wputb(shr(op, 24)); op = band(op, 0xffffff) end
+  if op >= 65536 then
+    if rex ~= 0 then
+      local opc3 = band(op, 0xffff00)
+      if opc3 == 0x0f3a00 or opc3 == 0x0f3800 then
+	wputb(64 + band(rex, 15)); rex = 0; psz = 2
+      end
+    end
+    wputb(shr(op, 16)); op = band(op, 0xffff); psz = psz + 1
+  end
+  if op >= 256 then
+    local b = shr(op, 8)
+    if b == 15 and rex ~= 0 then wputb(64 + band(rex, 15)); rex = 0; psz = 2 end
+    wputb(b); op = band(op, 255); psz = psz + 1
+  end
+  if rex ~= 0 then wputb(64 + band(rex, 15)); psz = 2 end
+  if sz == "b" then op = op - 1 end
+  wputb(op)
+  return psz, sk
+end
+
+-- Put ModRM or SIB formatted byte.
+local function wputmodrm(m, s, rm, vs, vrm)
+  assert(m < 4 and s < 16 and rm < 16, "bad modrm operands")
+  wputb(shl(m, 6) + shl(band(s, 7), 3) + band(rm, 7))
+end
+
+-- Put ModRM/SIB plus optional displacement.
+local function wputmrmsib(t, imark, s, vsreg, psz, sk)
+  local vreg, vxreg
+  local reg, xreg = t.reg, t.xreg
+  if reg and reg < 0 then reg = 0; vreg = t.vreg end
+  if xreg and xreg < 0 then xreg = 0; vxreg = t.vxreg end
+  if s < 0 then s = 0 end
+
+  -- Register mode.
+  if sub(t.mode, 1, 1) == "r" then
+    wputmodrm(3, s, reg)
+    wvreg("modrm.reg", vsreg, psz+1, sk, vreg)
+    wvreg("modrm.rm.r", vreg, psz+1, sk)
+    return
+  end
+
+  local disp = t.disp
+  local tdisp = type(disp)
+  -- No base register?
+  if not reg then
+    local riprel = false
+    if xreg then
+      -- Indexed mode with index register only.
+      -- [xreg*xsc+disp] -> (0, s, esp) (xsc, xreg, ebp)
+      wputmodrm(0, s, 4)
+      if imark == "I" then waction("MARK") end
+      wvreg("modrm.reg", vsreg, psz+1, sk, vxreg)
+      wputmodrm(t.xsc, xreg, 5)
+      wvreg("sib.index", vxreg, psz+2, sk)
+    else
+      -- Pure 32 bit displacement.
+      if x64 and tdisp ~= "table" then
+	wputmodrm(0, s, 4) -- [disp] -> (0, s, esp) (0, esp, ebp)
+	wvreg("modrm.reg", vsreg, psz+1, sk)
+	if imark == "I" then waction("MARK") end
+	wputmodrm(0, 4, 5)
+      else
+	riprel = x64
+	wputmodrm(0, s, 5) -- [disp|rip-label] -> (0, s, ebp)
+	wvreg("modrm.reg", vsreg, psz+1, sk)
+	if imark == "I" then waction("MARK") end
+      end
+    end
+    if riprel then -- Emit rip-relative displacement.
+      if match("UWSiI", imark) then
+	werror("NYI: rip-relative displacement followed by immediate")
+      end
+      -- The previous byte in the action buffer cannot be 0xe9 or 0x80-0x8f.
+      wputlabel("REL_", disp[1], 2)
+    else
+      wputdarg(disp)
+    end
+    return
+  end
+
+  local m
+  if tdisp == "number" then -- Check displacement size at assembly time.
+    if disp == 0 and band(reg, 7) ~= 5 then -- [ebp] -> [ebp+0] (in SIB, too)
+      if not vreg then m = 0 end -- Force DISP to allow [Rd(5)] -> [ebp+0]
+    elseif disp >= -128 and disp <= 127 then m = 1
+    else m = 2 end
+  elseif tdisp == "table" then
+    m = 2
+  end
+
+  -- Index register present or esp as base register: need SIB encoding.
+  if xreg or band(reg, 7) == 4 then
+    wputmodrm(m or 2, s, 4) -- ModRM.
+    if m == nil or imark == "I" then waction("MARK") end
+    wvreg("modrm.reg", vsreg, psz+1, sk, vxreg or vreg)
+    wputmodrm(t.xsc or 0, xreg or 4, reg) -- SIB.
+    wvreg("sib.index", vxreg, psz+2, sk, vreg)
+    wvreg("sib.base", vreg, psz+2, sk)
+  else
+    wputmodrm(m or 2, s, reg) -- ModRM.
+    if (imark == "I" and (m == 1 or m == 2)) or
+       (m == nil and (vsreg or vreg)) then waction("MARK") end
+    wvreg("modrm.reg", vsreg, psz+1, sk, vreg)
+    wvreg("modrm.rm.m", vreg, psz+1, sk)
+  end
+
+  -- Put displacement.
+  if m == 1 then wputsbarg(disp)
+  elseif m == 2 then wputdarg(disp)
+  elseif m == nil then waction("DISP", disp) end
+end
+
+------------------------------------------------------------------------------
+
+-- Return human-readable operand mode string.
+local function opmodestr(op, args)
+  local m = {}
+  for i=1,#args do
+    local a = args[i]
+    m[#m+1] = sub(a.mode, 1, 1)..(a.opsize or "?")
+  end
+  return op.." "..concat(m, ",")
+end
+
+-- Convert number to valid integer or nil.
+local function toint(expr, isqword)
+  local n = tonumber(expr)
+  if n then
+    if n % 1 ~= 0 then
+      werror("not an integer number `"..expr.."'")
+    elseif isqword then
+      if n < -2147483648 or n > 2147483647 then
+	n = nil -- Handle it as an expression to avoid precision loss.
+      end
+    elseif n < -2147483648 or n > 4294967295 then
+      werror("bad integer number `"..expr.."'")
+    end
+    return n
+  end
+end
+
+-- Parse immediate expression.
+local function immexpr(expr)
+  -- &expr (pointer)
+  if sub(expr, 1, 1) == "&" then
+    return "iPJ", format("(ptrdiff_t)(%s)", sub(expr,2))
+  end
+
+  local prefix = sub(expr, 1, 2)
+  -- =>expr (pc label reference)
+  if prefix == "=>" then
+    return "iJ", sub(expr, 3)
+  end
+  -- ->name (global label reference)
+  if prefix == "->" then
+    return "iJ", map_global[sub(expr, 3)]
+  end
+
+  -- [<>][1-9] (local label reference)
+  local dir, lnum = match(expr, "^([<>])([1-9])$")
+  if dir then -- Fwd: 247-255, Bkwd: 1-9.
+    return "iJ", lnum + (dir == ">" and 246 or 0)
+  end
+
+  local extname = match(expr, "^extern%s+(%S+)$")
+  if extname then
+    return "iJ", map_extern[extname]
+  end
+
+  -- expr (interpreted as immediate)
+  return "iI", expr
+end
+
+-- Parse displacement expression: +-num, +-expr, +-opsize*num
+local function dispexpr(expr)
+  local disp = expr == "" and 0 or toint(expr)
+  if disp then return disp end
+  local c, dispt = match(expr, "^([+-])%s*(.+)$")
+  if c == "+" then
+    expr = dispt
+  elseif not c then
+    werror("bad displacement expression `"..expr.."'")
+  end
+  local opsize, tailops = match(dispt, "^(%w+)%s*%*%s*(.+)$")
+  local ops, imm = map_opsize[opsize], toint(tailops)
+  if ops and imm then
+    if c == "-" then imm = -imm end
+    return imm*map_opsizenum[ops]
+  end
+  local mode, iexpr = immexpr(dispt)
+  if mode == "iJ" then
+    if c == "-" then werror("cannot invert label reference") end
+    return { iexpr }
+  end
+  return expr -- Need to return original signed expression.
+end
+
+-- Parse register or type expression.
+local function rtexpr(expr)
+  if not expr then return end
+  local tname, ovreg = match(expr, "^([%w_]+):(@[%w_]+)$")
+  local tp = map_type[tname or expr]
+  if tp then
+    local reg = ovreg or tp.reg
+    local rnum = map_reg_num[reg]
+    if not rnum then
+      werror("type `"..(tname or expr).."' needs a register override")
+    end
+    if not map_reg_valid_base[reg] then
+      werror("bad base register override `"..(map_reg_rev[reg] or reg).."'")
+    end
+    return reg, rnum, tp
+  end
+  return expr, map_reg_num[expr]
+end
+
+-- Parse operand and return { mode, opsize, reg, xreg, xsc, disp, imm }.
+local function parseoperand(param, isqword)
+  local t = {}
+
+  local expr = param
+  local opsize, tailops = match(param, "^(%w+)%s*(.+)$")
+  if opsize then
+    t.opsize = map_opsize[opsize]
+    if t.opsize then expr = tailops end
+  end
+
+  local br = match(expr, "^%[%s*(.-)%s*%]$")
+  repeat
+    if br then
+      t.mode = "xm"
+
+      -- [disp]
+      t.disp = toint(br)
+      if t.disp then
+	t.mode = x64 and "xm" or "xmO"
+	break
+      end
+
+      -- [reg...]
+      local tp
+      local reg, tailr = match(br, "^([@%w_:]+)%s*(.*)$")
+      reg, t.reg, tp = rtexpr(reg)
+      if not t.reg then
+	-- [expr]
+	t.mode = x64 and "xm" or "xmO"
+	t.disp = dispexpr("+"..br)
+	break
+      end
+
+      if t.reg == -1 then
+	t.vreg, tailr = match(tailr, "^(%b())(.*)$")
+	if not t.vreg then werror("bad variable register expression") end
+      end
+
+      -- [xreg*xsc] or [xreg*xsc+-disp] or [xreg*xsc+-expr]
+      local xsc, tailsc = match(tailr, "^%*%s*([1248])%s*(.*)$")
+      if xsc then
+	if not map_reg_valid_index[reg] then
+	  werror("bad index register `"..map_reg_rev[reg].."'")
+	end
+	t.xsc = map_xsc[xsc]
+	t.xreg = t.reg
+	t.vxreg = t.vreg
+	t.reg = nil
+	t.vreg = nil
+	t.disp = dispexpr(tailsc)
+	break
+      end
+      if not map_reg_valid_base[reg] then
+	werror("bad base register `"..map_reg_rev[reg].."'")
+      end
+
+      -- [reg] or [reg+-disp]
+      t.disp = toint(tailr) or (tailr == "" and 0)
+      if t.disp then break end
+
+      -- [reg+xreg...]
+      local xreg, tailx = match(tailr, "^%+%s*([@%w_:]+)%s*(.*)$")
+      xreg, t.xreg, tp = rtexpr(xreg)
+      if not t.xreg then
+	-- [reg+-expr]
+	t.disp = dispexpr(tailr)
+	break
+      end
+      if not map_reg_valid_index[xreg] then
+	werror("bad index register `"..map_reg_rev[xreg].."'")
+      end
+
+      if t.xreg == -1 then
+	t.vxreg, tailx = match(tailx, "^(%b())(.*)$")
+	if not t.vxreg then werror("bad variable register expression") end
+      end
+
+      -- [reg+xreg*xsc...]
+      local xsc, tailsc = match(tailx, "^%*%s*([1248])%s*(.*)$")
+      if xsc then
+	t.xsc = map_xsc[xsc]
+	tailx = tailsc
+      end
+
+      -- [...] or [...+-disp] or [...+-expr]
+      t.disp = dispexpr(tailx)
+    else
+      -- imm or opsize*imm
+      local imm = toint(expr, isqword)
+      if not imm and sub(expr, 1, 1) == "*" and t.opsize then
+	imm = toint(sub(expr, 2))
+	if imm then
+	  imm = imm * map_opsizenum[t.opsize]
+	  t.opsize = nil
+	end
+      end
+      if imm then
+	if t.opsize then werror("bad operand size override") end
+	local m = "i"
+	if imm == 1 then m = m.."1" end
+	if imm >= 4294967168 and imm <= 4294967295 then imm = imm-4294967296 end
+	if imm >= -128 and imm <= 127 then m = m.."S" end
+	t.imm = imm
+	t.mode = m
+	break
+      end
+
+      local tp
+      local reg, tailr = match(expr, "^([@%w_:]+)%s*(.*)$")
+      reg, t.reg, tp = rtexpr(reg)
+      if t.reg then
+	if t.reg == -1 then
+	  t.vreg, tailr = match(tailr, "^(%b())(.*)$")
+	  if not t.vreg then werror("bad variable register expression") end
+	end
+	-- reg
+	if tailr == "" then
+	  if t.opsize then werror("bad operand size override") end
+	  t.opsize = map_reg_opsize[reg]
+	  if t.opsize == "f" then
+	    t.mode = t.reg == 0 and "fF" or "f"
+	  else
+	    if reg == "@w4" or (x64 and reg == "@d4") then
+	      wwarn("bad idea, try again with `"..(x64 and "rsp'" or "esp'"))
+	    end
+	    t.mode = t.reg == 0 and "rmR" or (reg == "@b1" and "rmC" or "rm")
+	  end
+	  t.needrex = map_reg_needrex[reg]
+	  break
+	end
+
+	-- type[idx], type[idx].field, type->field -> [reg+offset_expr]
+	if not tp then werror("bad operand `"..param.."'") end
+	t.mode = "xm"
+	t.disp = format(tp.ctypefmt, tailr)
+      else
+	t.mode, t.imm = immexpr(expr)
+	if sub(t.mode, -1) == "J" then
+	  if t.opsize and t.opsize ~= addrsize then
+	    werror("bad operand size override")
+	  end
+	  t.opsize = addrsize
+	end
+      end
+    end
+  until true
+  return t
+end
+
+------------------------------------------------------------------------------
+-- x86 Template String Description
+-- ===============================
+--
+-- Each template string is a list of [match:]pattern pairs,
+-- separated by "|". The first match wins. No match means a
+-- bad or unsupported combination of operand modes or sizes.
+--
+-- The match part and the ":" is omitted if the operation has
+-- no operands. Otherwise the first N characters are matched
+-- against the mode strings of each of the N operands.
+--
+-- The mode string for each operand type is (see parseoperand()):
+--   Integer register: "rm", +"R" for eax, ax, al, +"C" for cl
+--   FP register:      "f",  +"F" for st0
+--   Index operand:    "xm", +"O" for [disp] (pure offset)
+--   Immediate:        "i",  +"S" for signed 8 bit, +"1" for 1,
+--                     +"I" for arg, +"P" for pointer
+--   Any:              +"J" for valid jump targets
+--
+-- So a match character "m" (mixed) matches both an integer register
+-- and an index operand (to be encoded with the ModRM/SIB scheme).
+-- But "r" matches only a register and "x" only an index operand
+-- (e.g. for FP memory access operations).
+--
+-- The operand size match string starts right after the mode match
+-- characters and ends before the ":". "dwb" or "qdwb" is assumed, if empty.
+-- The effective data size of the operation is matched against this list.
+--
+-- If only the regular "b", "w", "d", "q", "t" operand sizes are
+-- present, then all operands must be the same size. Unspecified sizes
+-- are ignored, but at least one operand must have a size or the pattern
+-- won't match (use the "byte", "word", "dword", "qword", "tword"
+-- operand size overrides. E.g.: mov dword [eax], 1).
+--
+-- If the list has a "1" or "2" prefix, the operand size is taken
+-- from the respective operand and any other operand sizes are ignored.
+-- If the list contains only ".", all operand sizes are ignored.
+-- If the list has a "/" prefix, the concatenated (mixed) operand sizes
+-- are compared to the match.
+--
+-- E.g. "rrdw" matches for either two dword registers or two word
+-- registers. "Fx2dq" matches an st0 operand plus an index operand
+-- pointing to a dword (float) or qword (double).
+--
+-- Every character after the ":" is part of the pattern string:
+--   Hex chars are accumulated to form the opcode (left to right).
+--   "n"       disables the standard opcode mods
+--             (otherwise: -1 for "b", o16 prefix for "w", rex.w for "q")
+--   "X"       Force REX.W.
+--   "r"/"R"   adds the reg. number from the 1st/2nd operand to the opcode.
+--   "m"/"M"   generates ModRM/SIB from the 1st/2nd operand.
+--             The spare 3 bits are either filled with the last hex digit or
+--             the result from a previous "r"/"R". The opcode is restored.
+--   "u"       Use VEX encoding, vvvv unused.
+--   "v"/"V"   Use VEX encoding, vvvv from 1st/2nd operand (the operand is
+--             removed from the list used by future characters).
+--   "w"       Use VEX encoding, vvvv from 3rd operand.
+--   "L"       Force VEX.L
+--
+-- All of the following characters force a flush of the opcode:
+--   "o"/"O"   stores a pure 32 bit disp (offset) from the 1st/2nd operand.
+--   "s"       stores a 4 bit immediate from the last register operand,
+--             followed by 4 zero bits.
+--   "S"       stores a signed 8 bit immediate from the last operand.
+--   "U"       stores an unsigned 8 bit immediate from the last operand.
+--   "W"       stores an unsigned 16 bit immediate from the last operand.
+--   "i"       stores an operand sized immediate from the last operand.
+--   "I"       dito, but generates an action code to optionally modify
+--             the opcode (+2) for a signed 8 bit immediate.
+--   "J"       generates one of the REL action codes from the last operand.
+--
+------------------------------------------------------------------------------
+
+-- Template strings for x86 instructions. Ordered by first opcode byte.
+-- Unimplemented opcodes (deliberate omissions) are marked with *.
+local map_op = {
+  -- 00-05: add...
+  -- 06: *push es
+  -- 07: *pop es
+  -- 08-0D: or...
+  -- 0E: *push cs
+  -- 0F: two byte opcode prefix
+  -- 10-15: adc...
+  -- 16: *push ss
+  -- 17: *pop ss
+  -- 18-1D: sbb...
+  -- 1E: *push ds
+  -- 1F: *pop ds
+  -- 20-25: and...
+  es_0 =	"26",
+  -- 27: *daa
+  -- 28-2D: sub...
+  cs_0 =	"2E",
+  -- 2F: *das
+  -- 30-35: xor...
+  ss_0 =	"36",
+  -- 37: *aaa
+  -- 38-3D: cmp...
+  ds_0 =	"3E",
+  -- 3F: *aas
+  inc_1 =	x64 and "m:FF0m" or "rdw:40r|m:FF0m",
+  dec_1 =	x64 and "m:FF1m" or "rdw:48r|m:FF1m",
+  push_1 =	(x64 and "rq:n50r|rw:50r|mq:nFF6m|mw:FF6m" or
+			 "rdw:50r|mdw:FF6m").."|S.:6AS|ib:n6Ai|i.:68i",
+  pop_1 =	x64 and "rq:n58r|rw:58r|mq:n8F0m|mw:8F0m" or "rdw:58r|mdw:8F0m",
+  -- 60: *pusha, *pushad, *pushaw
+  -- 61: *popa, *popad, *popaw
+  -- 62: *bound rdw,x
+  -- 63: x86: *arpl mw,rw
+  movsxd_2 =	x64 and "rm/qd:63rM",
+  fs_0 =	"64",
+  gs_0 =	"65",
+  o16_0 =	"66",
+  a16_0 =	not x64 and "67" or nil,
+  a32_0 =	x64 and "67",
+  -- 68: push idw
+  -- 69: imul rdw,mdw,idw
+  -- 6A: push ib
+  -- 6B: imul rdw,mdw,S
+  -- 6C: *insb
+  -- 6D: *insd, *insw
+  -- 6E: *outsb
+  -- 6F: *outsd, *outsw
+  -- 70-7F: jcc lb
+  -- 80: add... mb,i
+  -- 81: add... mdw,i
+  -- 82: *undefined
+  -- 83: add... mdw,S
+  test_2 =	"mr:85Rm|rm:85rM|Ri:A9ri|mi:F70mi",
+  -- 86: xchg rb,mb
+  -- 87: xchg rdw,mdw
+  -- 88: mov mb,r
+  -- 89: mov mdw,r
+  -- 8A: mov r,mb
+  -- 8B: mov r,mdw
+  -- 8C: *mov mdw,seg
+  lea_2 =	"rx1dq:8DrM",
+  -- 8E: *mov seg,mdw
+  -- 8F: pop mdw
+  nop_0 =	"90",
+  xchg_2 =	"Rrqdw:90R|rRqdw:90r|rm:87rM|mr:87Rm",
+  cbw_0 =	"6698",
+  cwde_0 =	"98",
+  cdqe_0 =	"4898",
+  cwd_0 =	"6699",
+  cdq_0 =	"99",
+  cqo_0 =	"4899",
+  -- 9A: *call iw:idw
+  wait_0 =	"9B",
+  fwait_0 =	"9B",
+  pushf_0 =	"9C",
+  pushfd_0 =	not x64 and "9C",
+  pushfq_0 =	x64 and "9C",
+  popf_0 =	"9D",
+  popfd_0 =	not x64 and "9D",
+  popfq_0 =	x64 and "9D",
+  sahf_0 =	"9E",
+  lahf_0 =	"9F",
+  mov_2 =	"OR:A3o|RO:A1O|mr:89Rm|rm:8BrM|rib:nB0ri|ridw:B8ri|mi:C70mi",
+  movsb_0 =	"A4",
+  movsw_0 =	"66A5",
+  movsd_0 =	"A5",
+  cmpsb_0 =	"A6",
+  cmpsw_0 =	"66A7",
+  cmpsd_0 =	"A7",
+  -- A8: test Rb,i
+  -- A9: test Rdw,i
+  stosb_0 =	"AA",
+  stosw_0 =	"66AB",
+  stosd_0 =	"AB",
+  lodsb_0 =	"AC",
+  lodsw_0 =	"66AD",
+  lodsd_0 =	"AD",
+  scasb_0 =	"AE",
+  scasw_0 =	"66AF",
+  scasd_0 =	"AF",
+  -- B0-B7: mov rb,i
+  -- B8-BF: mov rdw,i
+  -- C0: rol... mb,i
+  -- C1: rol... mdw,i
+  ret_1 =	"i.:nC2W",
+  ret_0 =	"C3",
+  -- C4: *les rdw,mq
+  -- C5: *lds rdw,mq
+  -- C6: mov mb,i
+  -- C7: mov mdw,i
+  -- C8: *enter iw,ib
+  leave_0 =	"C9",
+  -- CA: *retf iw
+  -- CB: *retf
+  int3_0 =	"CC",
+  int_1 =	"i.:nCDU",
+  into_0 =	"CE",
+  -- CF: *iret
+  -- D0: rol... mb,1
+  -- D1: rol... mdw,1
+  -- D2: rol... mb,cl
+  -- D3: rol... mb,cl
+  -- D4: *aam ib
+  -- D5: *aad ib
+  -- D6: *salc
+  -- D7: *xlat
+  -- D8-DF: floating point ops
+  -- E0: *loopne
+  -- E1: *loope
+  -- E2: *loop
+  -- E3: *jcxz, *jecxz
+  -- E4: *in Rb,ib
+  -- E5: *in Rdw,ib
+  -- E6: *out ib,Rb
+  -- E7: *out ib,Rdw
+  call_1 =	x64 and "mq:nFF2m|J.:E8nJ" or "md:FF2m|J.:E8J",
+  jmp_1 =	x64 and "mq:nFF4m|J.:E9nJ" or "md:FF4m|J.:E9J", -- short: EB
+  -- EA: *jmp iw:idw
+  -- EB: jmp ib
+  -- EC: *in Rb,dx
+  -- ED: *in Rdw,dx
+  -- EE: *out dx,Rb
+  -- EF: *out dx,Rdw
+  lock_0 =	"F0",
+  int1_0 =	"F1",
+  repne_0 =	"F2",
+  repnz_0 =	"F2",
+  rep_0 =	"F3",
+  repe_0 =	"F3",
+  repz_0 =	"F3",
+  -- F4: *hlt
+  cmc_0 =	"F5",
+  -- F6: test... mb,i; div... mb
+  -- F7: test... mdw,i; div... mdw
+  clc_0 =	"F8",
+  stc_0 =	"F9",
+  -- FA: *cli
+  cld_0 =	"FC",
+  std_0 =	"FD",
+  -- FE: inc... mb
+  -- FF: inc... mdw
+
+  -- misc ops
+  not_1 =	"m:F72m",
+  neg_1 =	"m:F73m",
+  mul_1 =	"m:F74m",
+  imul_1 =	"m:F75m",
+  div_1 =	"m:F76m",
+  idiv_1 =	"m:F77m",
+
+  imul_2 =	"rmqdw:0FAFrM|rIqdw:69rmI|rSqdw:6BrmS|riqdw:69rmi",
+  imul_3 =	"rmIqdw:69rMI|rmSqdw:6BrMS|rmiqdw:69rMi",
+
+  movzx_2 =	"rm/db:0FB6rM|rm/qb:|rm/wb:0FB6rM|rm/dw:0FB7rM|rm/qw:",
+  movsx_2 =	"rm/db:0FBErM|rm/qb:|rm/wb:0FBErM|rm/dw:0FBFrM|rm/qw:",
+
+  bswap_1 =	"rqd:0FC8r",
+  bsf_2 =	"rmqdw:0FBCrM",
+  bsr_2 =	"rmqdw:0FBDrM",
+  bt_2 =	"mrqdw:0FA3Rm|miqdw:0FBA4mU",
+  btc_2 =	"mrqdw:0FBBRm|miqdw:0FBA7mU",
+  btr_2 =	"mrqdw:0FB3Rm|miqdw:0FBA6mU",
+  bts_2 =	"mrqdw:0FABRm|miqdw:0FBA5mU",
+
+  shld_3 =	"mriqdw:0FA4RmU|mrC/qq:0FA5Rm|mrC/dd:|mrC/ww:",
+  shrd_3 =	"mriqdw:0FACRmU|mrC/qq:0FADRm|mrC/dd:|mrC/ww:",
+
+  rdtsc_0 =	"0F31", -- P1+
+  rdpmc_0 =	"0F33", -- P6+
+  cpuid_0 =	"0FA2", -- P1+
+
+  -- floating point ops
+  fst_1 =	"ff:DDD0r|xd:D92m|xq:nDD2m",
+  fstp_1 =	"ff:DDD8r|xd:D93m|xq:nDD3m|xt:DB7m",
+  fld_1 =	"ff:D9C0r|xd:D90m|xq:nDD0m|xt:DB5m",
+
+  fpop_0 =	"DDD8", -- Alias for fstp st0.
+
+  fist_1 =	"xw:nDF2m|xd:DB2m",
+  fistp_1 =	"xw:nDF3m|xd:DB3m|xq:nDF7m",
+  fild_1 =	"xw:nDF0m|xd:DB0m|xq:nDF5m",
+
+  fxch_0 =	"D9C9",
+  fxch_1 =	"ff:D9C8r",
+  fxch_2 =	"fFf:D9C8r|Fff:D9C8R",
+
+  fucom_1 =	"ff:DDE0r",
+  fucom_2 =	"Fff:DDE0R",
+  fucomp_1 =	"ff:DDE8r",
+  fucomp_2 =	"Fff:DDE8R",
+  fucomi_1 =	"ff:DBE8r", -- P6+
+  fucomi_2 =	"Fff:DBE8R", -- P6+
+  fucomip_1 =	"ff:DFE8r", -- P6+
+  fucomip_2 =	"Fff:DFE8R", -- P6+
+  fcomi_1 =	"ff:DBF0r", -- P6+
+  fcomi_2 =	"Fff:DBF0R", -- P6+
+  fcomip_1 =	"ff:DFF0r", -- P6+
+  fcomip_2 =	"Fff:DFF0R", -- P6+
+  fucompp_0 =	"DAE9",
+  fcompp_0 =	"DED9",
+
+  fldenv_1 =	"x.:D94m",
+  fnstenv_1 =	"x.:D96m",
+  fstenv_1 =	"x.:9BD96m",
+  fldcw_1 =	"xw:nD95m",
+  fstcw_1 =	"xw:n9BD97m",
+  fnstcw_1 =	"xw:nD97m",
+  fstsw_1 =	"Rw:n9BDFE0|xw:n9BDD7m",
+  fnstsw_1 =	"Rw:nDFE0|xw:nDD7m",
+  fclex_0 =	"9BDBE2",
+  fnclex_0 =	"DBE2",
+
+  fnop_0 =	"D9D0",
+  -- D9D1-D9DF: unassigned
+
+  fchs_0 =	"D9E0",
+  fabs_0 =	"D9E1",
+  -- D9E2: unassigned
+  -- D9E3: unassigned
+  ftst_0 =	"D9E4",
+  fxam_0 =	"D9E5",
+  -- D9E6: unassigned
+  -- D9E7: unassigned
+  fld1_0 =	"D9E8",
+  fldl2t_0 =	"D9E9",
+  fldl2e_0 =	"D9EA",
+  fldpi_0 =	"D9EB",
+  fldlg2_0 =	"D9EC",
+  fldln2_0 =	"D9ED",
+  fldz_0 =	"D9EE",
+  -- D9EF: unassigned
+
+  f2xm1_0 =	"D9F0",
+  fyl2x_0 =	"D9F1",
+  fptan_0 =	"D9F2",
+  fpatan_0 =	"D9F3",
+  fxtract_0 =	"D9F4",
+  fprem1_0 =	"D9F5",
+  fdecstp_0 =	"D9F6",
+  fincstp_0 =	"D9F7",
+  fprem_0 =	"D9F8",
+  fyl2xp1_0 =	"D9F9",
+  fsqrt_0 =	"D9FA",
+  fsincos_0 =	"D9FB",
+  frndint_0 =	"D9FC",
+  fscale_0 =	"D9FD",
+  fsin_0 =	"D9FE",
+  fcos_0 =	"D9FF",
+
+  -- SSE, SSE2
+  andnpd_2 =	"rmo:660F55rM",
+  andnps_2 =	"rmo:0F55rM",
+  andpd_2 =	"rmo:660F54rM",
+  andps_2 =	"rmo:0F54rM",
+  clflush_1 =	"x.:0FAE7m",
+  cmppd_3 =	"rmio:660FC2rMU",
+  cmpps_3 =	"rmio:0FC2rMU",
+  cmpsd_3 =	"rrio:F20FC2rMU|rxi/oq:",
+  cmpss_3 =	"rrio:F30FC2rMU|rxi/od:",
+  comisd_2 =	"rro:660F2FrM|rx/oq:",
+  comiss_2 =	"rro:0F2FrM|rx/od:",
+  cvtdq2pd_2 =	"rro:F30FE6rM|rx/oq:",
+  cvtdq2ps_2 =	"rmo:0F5BrM",
+  cvtpd2dq_2 =	"rmo:F20FE6rM",
+  cvtpd2ps_2 =	"rmo:660F5ArM",
+  cvtpi2pd_2 =	"rx/oq:660F2ArM",
+  cvtpi2ps_2 =	"rx/oq:0F2ArM",
+  cvtps2dq_2 =	"rmo:660F5BrM",
+  cvtps2pd_2 =	"rro:0F5ArM|rx/oq:",
+  cvtsd2si_2 =	"rr/do:F20F2DrM|rr/qo:|rx/dq:|rxq:",
+  cvtsd2ss_2 =	"rro:F20F5ArM|rx/oq:",
+  cvtsi2sd_2 =	"rm/od:F20F2ArM|rm/oq:F20F2ArXM",
+  cvtsi2ss_2 =	"rm/od:F30F2ArM|rm/oq:F30F2ArXM",
+  cvtss2sd_2 =	"rro:F30F5ArM|rx/od:",
+  cvtss2si_2 =	"rr/do:F30F2DrM|rr/qo:|rxd:|rx/qd:",
+  cvttpd2dq_2 =	"rmo:660FE6rM",
+  cvttps2dq_2 =	"rmo:F30F5BrM",
+  cvttsd2si_2 =	"rr/do:F20F2CrM|rr/qo:|rx/dq:|rxq:",
+  cvttss2si_2 =	"rr/do:F30F2CrM|rr/qo:|rxd:|rx/qd:",
+  fxsave_1 =	"x.:0FAE0m",
+  fxrstor_1 =	"x.:0FAE1m",
+  ldmxcsr_1 =	"xd:0FAE2m",
+  lfence_0 =	"0FAEE8",
+  maskmovdqu_2 = "rro:660FF7rM",
+  mfence_0 =	"0FAEF0",
+  movapd_2 =	"rmo:660F28rM|mro:660F29Rm",
+  movaps_2 =	"rmo:0F28rM|mro:0F29Rm",
+  movd_2 =	"rm/od:660F6ErM|rm/oq:660F6ErXM|mr/do:660F7ERm|mr/qo:",
+  movdqa_2 =	"rmo:660F6FrM|mro:660F7FRm",
+  movdqu_2 =	"rmo:F30F6FrM|mro:F30F7FRm",
+  movhlps_2 =	"rro:0F12rM",
+  movhpd_2 =	"rx/oq:660F16rM|xr/qo:n660F17Rm",
+  movhps_2 =	"rx/oq:0F16rM|xr/qo:n0F17Rm",
+  movlhps_2 =	"rro:0F16rM",
+  movlpd_2 =	"rx/oq:660F12rM|xr/qo:n660F13Rm",
+  movlps_2 =	"rx/oq:0F12rM|xr/qo:n0F13Rm",
+  movmskpd_2 =	"rr/do:660F50rM",
+  movmskps_2 =	"rr/do:0F50rM",
+  movntdq_2 =	"xro:660FE7Rm",
+  movnti_2 =	"xrqd:0FC3Rm",
+  movntpd_2 =	"xro:660F2BRm",
+  movntps_2 =	"xro:0F2BRm",
+  movq_2 =	"rro:F30F7ErM|rx/oq:|xr/qo:n660FD6Rm",
+  movsd_2 =	"rro:F20F10rM|rx/oq:|xr/qo:nF20F11Rm",
+  movss_2 =	"rro:F30F10rM|rx/od:|xr/do:F30F11Rm",
+  movupd_2 =	"rmo:660F10rM|mro:660F11Rm",
+  movups_2 =	"rmo:0F10rM|mro:0F11Rm",
+  orpd_2 =	"rmo:660F56rM",
+  orps_2 =	"rmo:0F56rM",
+  pause_0 =	"F390",
+  pextrw_3 =	"rri/do:660FC5rMU|xri/wo:660F3A15nRmU", -- Mem op: SSE4.1 only.
+  pinsrw_3 =	"rri/od:660FC4rMU|rxi/ow:",
+  pmovmskb_2 =	"rr/do:660FD7rM",
+  prefetchnta_1 = "xb:n0F180m",
+  prefetcht0_1 = "xb:n0F181m",
+  prefetcht1_1 = "xb:n0F182m",
+  prefetcht2_1 = "xb:n0F183m",
+  pshufd_3 =	"rmio:660F70rMU",
+  pshufhw_3 =	"rmio:F30F70rMU",
+  pshuflw_3 =	"rmio:F20F70rMU",
+  pslld_2 =	"rmo:660FF2rM|rio:660F726mU",
+  pslldq_2 =	"rio:660F737mU",
+  psllq_2 =	"rmo:660FF3rM|rio:660F736mU",
+  psllw_2 =	"rmo:660FF1rM|rio:660F716mU",
+  psrad_2 =	"rmo:660FE2rM|rio:660F724mU",
+  psraw_2 =	"rmo:660FE1rM|rio:660F714mU",
+  psrld_2 =	"rmo:660FD2rM|rio:660F722mU",
+  psrldq_2 =	"rio:660F733mU",
+  psrlq_2 =	"rmo:660FD3rM|rio:660F732mU",
+  psrlw_2 =	"rmo:660FD1rM|rio:660F712mU",
+  rcpps_2 =	"rmo:0F53rM",
+  rcpss_2 =	"rro:F30F53rM|rx/od:",
+  rsqrtps_2 =	"rmo:0F52rM",
+  rsqrtss_2 =	"rmo:F30F52rM",
+  sfence_0 =	"0FAEF8",
+  shufpd_3 =	"rmio:660FC6rMU",
+  shufps_3 =	"rmio:0FC6rMU",
+  stmxcsr_1 =   "xd:0FAE3m",
+  ucomisd_2 =	"rro:660F2ErM|rx/oq:",
+  ucomiss_2 =	"rro:0F2ErM|rx/od:",
+  unpckhpd_2 =	"rmo:660F15rM",
+  unpckhps_2 =	"rmo:0F15rM",
+  unpcklpd_2 =	"rmo:660F14rM",
+  unpcklps_2 =	"rmo:0F14rM",
+  xorpd_2 =	"rmo:660F57rM",
+  xorps_2 =	"rmo:0F57rM",
+
+  -- SSE3 ops
+  fisttp_1 =	"xw:nDF1m|xd:DB1m|xq:nDD1m",
+  addsubpd_2 =	"rmo:660FD0rM",
+  addsubps_2 =	"rmo:F20FD0rM",
+  haddpd_2 =	"rmo:660F7CrM",
+  haddps_2 =	"rmo:F20F7CrM",
+  hsubpd_2 =	"rmo:660F7DrM",
+  hsubps_2 =	"rmo:F20F7DrM",
+  lddqu_2 =	"rxo:F20FF0rM",
+  movddup_2 =	"rmo:F20F12rM",
+  movshdup_2 =	"rmo:F30F16rM",
+  movsldup_2 =	"rmo:F30F12rM",
+
+  -- SSSE3 ops
+  pabsb_2 =	"rmo:660F381CrM",
+  pabsd_2 =	"rmo:660F381ErM",
+  pabsw_2 =	"rmo:660F381DrM",
+  palignr_3 =	"rmio:660F3A0FrMU",
+  phaddd_2 =	"rmo:660F3802rM",
+  phaddsw_2 =	"rmo:660F3803rM",
+  phaddw_2 =	"rmo:660F3801rM",
+  phsubd_2 =	"rmo:660F3806rM",
+  phsubsw_2 =	"rmo:660F3807rM",
+  phsubw_2 =	"rmo:660F3805rM",
+  pmaddubsw_2 =	"rmo:660F3804rM",
+  pmulhrsw_2 =	"rmo:660F380BrM",
+  pshufb_2 =	"rmo:660F3800rM",
+  psignb_2 =	"rmo:660F3808rM",
+  psignd_2 =	"rmo:660F380ArM",
+  psignw_2 =	"rmo:660F3809rM",
+
+  -- SSE4.1 ops
+  blendpd_3 =	"rmio:660F3A0DrMU",
+  blendps_3 =	"rmio:660F3A0CrMU",
+  blendvpd_3 =	"rmRo:660F3815rM",
+  blendvps_3 =	"rmRo:660F3814rM",
+  dppd_3 =	"rmio:660F3A41rMU",
+  dpps_3 =	"rmio:660F3A40rMU",
+  extractps_3 =	"mri/do:660F3A17RmU|rri/qo:660F3A17RXmU",
+  insertps_3 =	"rrio:660F3A41rMU|rxi/od:",
+  movntdqa_2 =	"rxo:660F382ArM",
+  mpsadbw_3 =	"rmio:660F3A42rMU",
+  packusdw_2 =	"rmo:660F382BrM",
+  pblendvb_3 =	"rmRo:660F3810rM",
+  pblendw_3 =	"rmio:660F3A0ErMU",
+  pcmpeqq_2 =	"rmo:660F3829rM",
+  pextrb_3 =	"rri/do:660F3A14nRmU|rri/qo:|xri/bo:",
+  pextrd_3 =	"mri/do:660F3A16RmU",
+  pextrq_3 =	"mri/qo:660F3A16RmU",
+  -- pextrw is SSE2, mem operand is SSE4.1 only
+  phminposuw_2 = "rmo:660F3841rM",
+  pinsrb_3 =	"rri/od:660F3A20nrMU|rxi/ob:",
+  pinsrd_3 =	"rmi/od:660F3A22rMU",
+  pinsrq_3 =	"rmi/oq:660F3A22rXMU",
+  pmaxsb_2 =	"rmo:660F383CrM",
+  pmaxsd_2 =	"rmo:660F383DrM",
+  pmaxud_2 =	"rmo:660F383FrM",
+  pmaxuw_2 =	"rmo:660F383ErM",
+  pminsb_2 =	"rmo:660F3838rM",
+  pminsd_2 =	"rmo:660F3839rM",
+  pminud_2 =	"rmo:660F383BrM",
+  pminuw_2 =	"rmo:660F383ArM",
+  pmovsxbd_2 =	"rro:660F3821rM|rx/od:",
+  pmovsxbq_2 =	"rro:660F3822rM|rx/ow:",
+  pmovsxbw_2 =	"rro:660F3820rM|rx/oq:",
+  pmovsxdq_2 =	"rro:660F3825rM|rx/oq:",
+  pmovsxwd_2 =	"rro:660F3823rM|rx/oq:",
+  pmovsxwq_2 =	"rro:660F3824rM|rx/od:",
+  pmovzxbd_2 =	"rro:660F3831rM|rx/od:",
+  pmovzxbq_2 =	"rro:660F3832rM|rx/ow:",
+  pmovzxbw_2 =	"rro:660F3830rM|rx/oq:",
+  pmovzxdq_2 =	"rro:660F3835rM|rx/oq:",
+  pmovzxwd_2 =	"rro:660F3833rM|rx/oq:",
+  pmovzxwq_2 =	"rro:660F3834rM|rx/od:",
+  pmuldq_2 =	"rmo:660F3828rM",
+  pmulld_2 =	"rmo:660F3840rM",
+  ptest_2 =	"rmo:660F3817rM",
+  roundpd_3 =	"rmio:660F3A09rMU",
+  roundps_3 =	"rmio:660F3A08rMU",
+  roundsd_3 =	"rrio:660F3A0BrMU|rxi/oq:",
+  roundss_3 =	"rrio:660F3A0ArMU|rxi/od:",
+
+  -- SSE4.2 ops
+  crc32_2 =	"rmqd:F20F38F1rM|rm/dw:66F20F38F1rM|rm/db:F20F38F0rM|rm/qb:",
+  pcmpestri_3 =	"rmio:660F3A61rMU",
+  pcmpestrm_3 =	"rmio:660F3A60rMU",
+  pcmpgtq_2 =	"rmo:660F3837rM",
+  pcmpistri_3 =	"rmio:660F3A63rMU",
+  pcmpistrm_3 =	"rmio:660F3A62rMU",
+  popcnt_2 =	"rmqdw:F30FB8rM",
+
+  -- SSE4a
+  extrq_2 =	"rro:660F79rM",
+  extrq_3 =	"riio:660F780mUU",
+  insertq_2 =	"rro:F20F79rM",
+  insertq_4 =	"rriio:F20F78rMUU",
+  lzcnt_2 =	"rmqdw:F30FBDrM",
+  movntsd_2 =	"xr/qo:nF20F2BRm",
+  movntss_2 =	"xr/do:F30F2BRm",
+  -- popcnt is also in SSE4.2
+
+  -- AES-NI
+  aesdec_2 =	"rmo:660F38DErM",
+  aesdeclast_2 = "rmo:660F38DFrM",
+  aesenc_2 =	"rmo:660F38DCrM",
+  aesenclast_2 = "rmo:660F38DDrM",
+  aesimc_2 =	"rmo:660F38DBrM",
+  aeskeygenassist_3 = "rmio:660F3ADFrMU",
+  pclmulqdq_3 =	"rmio:660F3A44rMU",
+
+   -- AVX FP ops
+  vaddsubpd_3 =	"rrmoy:660FVD0rM",
+  vaddsubps_3 =	"rrmoy:F20FVD0rM",
+  vandpd_3 =	"rrmoy:660FV54rM",
+  vandps_3 =	"rrmoy:0FV54rM",
+  vandnpd_3 =	"rrmoy:660FV55rM",
+  vandnps_3 =	"rrmoy:0FV55rM",
+  vblendpd_4 =	"rrmioy:660F3AV0DrMU",
+  vblendps_4 =	"rrmioy:660F3AV0CrMU",
+  vblendvpd_4 =	"rrmroy:660F3AV4BrMs",
+  vblendvps_4 =	"rrmroy:660F3AV4ArMs",
+  vbroadcastf128_2 = "rx/yo:660F38u1ArM",
+  vcmppd_4 =	"rrmioy:660FVC2rMU",
+  vcmpps_4 =	"rrmioy:0FVC2rMU",
+  vcmpsd_4 =	"rrrio:F20FVC2rMU|rrxi/ooq:",
+  vcmpss_4 =	"rrrio:F30FVC2rMU|rrxi/ood:",
+  vcomisd_2 =	"rro:660Fu2FrM|rx/oq:",
+  vcomiss_2 =	"rro:0Fu2FrM|rx/od:",
+  vcvtdq2pd_2 =	"rro:F30FuE6rM|rx/oq:|rm/yo:",
+  vcvtdq2ps_2 =	"rmoy:0Fu5BrM",
+  vcvtpd2dq_2 =	"rmoy:F20FuE6rM",
+  vcvtpd2ps_2 =	"rmoy:660Fu5ArM",
+  vcvtps2dq_2 =	"rmoy:660Fu5BrM",
+  vcvtps2pd_2 =	"rro:0Fu5ArM|rx/oq:|rm/yo:",
+  vcvtsd2si_2 =	"rr/do:F20Fu2DrM|rx/dq:|rr/qo:|rxq:",
+  vcvtsd2ss_3 =	"rrro:F20FV5ArM|rrx/ooq:",
+  vcvtsi2sd_3 =	"rrm/ood:F20FV2ArM|rrm/ooq:F20FVX2ArM",
+  vcvtsi2ss_3 =	"rrm/ood:F30FV2ArM|rrm/ooq:F30FVX2ArM",
+  vcvtss2sd_3 =	"rrro:F30FV5ArM|rrx/ood:",
+  vcvtss2si_2 =	"rr/do:F30Fu2DrM|rxd:|rr/qo:|rx/qd:",
+  vcvttpd2dq_2 = "rmo:660FuE6rM|rm/oy:660FuLE6rM",
+  vcvttps2dq_2 = "rmoy:F30Fu5BrM",
+  vcvttsd2si_2 = "rr/do:F20Fu2CrM|rx/dq:|rr/qo:|rxq:",
+  vcvttss2si_2 = "rr/do:F30Fu2CrM|rxd:|rr/qo:|rx/qd:",
+  vdppd_4 =	"rrmio:660F3AV41rMU",
+  vdpps_4 =	"rrmioy:660F3AV40rMU",
+  vextractf128_3 = "mri/oy:660F3AuL19RmU",
+  vextractps_3 = "mri/do:660F3Au17RmU",
+  vhaddpd_3 =	"rrmoy:660FV7CrM",
+  vhaddps_3 =	"rrmoy:F20FV7CrM",
+  vhsubpd_3 =	"rrmoy:660FV7DrM",
+  vhsubps_3 =	"rrmoy:F20FV7DrM",
+  vinsertf128_4 = "rrmi/yyo:660F3AV18rMU",
+  vinsertps_4 =	"rrrio:660F3AV21rMU|rrxi/ood:",
+  vldmxcsr_1 =	"xd:0FuAE2m",
+  vmaskmovps_3 = "rrxoy:660F38V2CrM|xrroy:660F38V2ERm",
+  vmaskmovpd_3 = "rrxoy:660F38V2DrM|xrroy:660F38V2FRm",
+  vmovapd_2 =	"rmoy:660Fu28rM|mroy:660Fu29Rm",
+  vmovaps_2 =	"rmoy:0Fu28rM|mroy:0Fu29Rm",
+  vmovd_2 =	"rm/od:660Fu6ErM|rm/oq:660FuX6ErM|mr/do:660Fu7ERm|mr/qo:",
+  vmovq_2 =	"rro:F30Fu7ErM|rx/oq:|xr/qo:660FuD6Rm",
+  vmovddup_2 =	"rmy:F20Fu12rM|rro:|rx/oq:",
+  vmovhlps_3 =	"rrro:0FV12rM",
+  vmovhpd_2 =	"xr/qo:660Fu17Rm",
+  vmovhpd_3 =	"rrx/ooq:660FV16rM",
+  vmovhps_2 =	"xr/qo:0Fu17Rm",
+  vmovhps_3 =	"rrx/ooq:0FV16rM",
+  vmovlhps_3 =	"rrro:0FV16rM",
+  vmovlpd_2 =	"xr/qo:660Fu13Rm",
+  vmovlpd_3 =	"rrx/ooq:660FV12rM",
+  vmovlps_2 =	"xr/qo:0Fu13Rm",
+  vmovlps_3 =	"rrx/ooq:0FV12rM",
+  vmovmskpd_2 =	"rr/do:660Fu50rM|rr/dy:660FuL50rM",
+  vmovmskps_2 =	"rr/do:0Fu50rM|rr/dy:0FuL50rM",
+  vmovntpd_2 =	"xroy:660Fu2BRm",
+  vmovntps_2 =	"xroy:0Fu2BRm",
+  vmovsd_2 =	"rx/oq:F20Fu10rM|xr/qo:F20Fu11Rm",
+  vmovsd_3 =	"rrro:F20FV10rM",
+  vmovshdup_2 =	"rmoy:F30Fu16rM",
+  vmovsldup_2 =	"rmoy:F30Fu12rM",
+  vmovss_2 =	"rx/od:F30Fu10rM|xr/do:F30Fu11Rm",
+  vmovss_3 =	"rrro:F30FV10rM",
+  vmovupd_2 =	"rmoy:660Fu10rM|mroy:660Fu11Rm",
+  vmovups_2 =	"rmoy:0Fu10rM|mroy:0Fu11Rm",
+  vorpd_3 =	"rrmoy:660FV56rM",
+  vorps_3 =	"rrmoy:0FV56rM",
+  vpermilpd_3 =	"rrmoy:660F38V0DrM|rmioy:660F3Au05rMU",
+  vpermilps_3 =	"rrmoy:660F38V0CrM|rmioy:660F3Au04rMU",
+  vperm2f128_4 = "rrmiy:660F3AV06rMU",
+  vptestpd_2 =	"rmoy:660F38u0FrM",
+  vptestps_2 =	"rmoy:660F38u0ErM",
+  vrcpps_2 =	"rmoy:0Fu53rM",
+  vrcpss_3 =	"rrro:F30FV53rM|rrx/ood:",
+  vrsqrtps_2 =	"rmoy:0Fu52rM",
+  vrsqrtss_3 =	"rrro:F30FV52rM|rrx/ood:",
+  vroundpd_3 =	"rmioy:660F3Au09rMU",
+  vroundps_3 =	"rmioy:660F3Au08rMU",
+  vroundsd_4 =	"rrrio:660F3AV0BrMU|rrxi/ooq:",
+  vroundss_4 =	"rrrio:660F3AV0ArMU|rrxi/ood:",
+  vshufpd_4 =	"rrmioy:660FVC6rMU",
+  vshufps_4 =	"rrmioy:0FVC6rMU",
+  vsqrtps_2 =	"rmoy:0Fu51rM",
+  vsqrtss_2 =	"rro:F30Fu51rM|rx/od:",
+  vsqrtpd_2 =	"rmoy:660Fu51rM",
+  vsqrtsd_2 =	"rro:F20Fu51rM|rx/oq:",
+  vstmxcsr_1 =	"xd:0FuAE3m",
+  vucomisd_2 =	"rro:660Fu2ErM|rx/oq:",
+  vucomiss_2 =	"rro:0Fu2ErM|rx/od:",
+  vunpckhpd_3 =	"rrmoy:660FV15rM",
+  vunpckhps_3 =	"rrmoy:0FV15rM",
+  vunpcklpd_3 =	"rrmoy:660FV14rM",
+  vunpcklps_3 =	"rrmoy:0FV14rM",
+  vxorpd_3 =	"rrmoy:660FV57rM",
+  vxorps_3 =	"rrmoy:0FV57rM",
+  vzeroall_0 =	"0FuL77",
+  vzeroupper_0 = "0Fu77",
+
+  -- AVX2 FP ops
+  vbroadcastss_2 = "rx/od:660F38u18rM|rx/yd:|rro:|rr/yo:",
+  vbroadcastsd_2 = "rx/yq:660F38u19rM|rr/yo:",
+  -- *vgather* (!vsib)
+  vpermpd_3 =	"rmiy:660F3AuX01rMU",
+  vpermps_3 =	"rrmy:660F38V16rM",
+
+  -- AVX, AVX2 integer ops
+  -- In general, xmm requires AVX, ymm requires AVX2.
+  vaesdec_3 =  "rrmo:660F38VDErM",
+  vaesdeclast_3 = "rrmo:660F38VDFrM",
+  vaesenc_3 =  "rrmo:660F38VDCrM",
+  vaesenclast_3 = "rrmo:660F38VDDrM",
+  vaesimc_2 =  "rmo:660F38uDBrM",
+  vaeskeygenassist_3 = "rmio:660F3AuDFrMU",
+  vlddqu_2 =	"rxoy:F20FuF0rM",
+  vmaskmovdqu_2 = "rro:660FuF7rM",
+  vmovdqa_2 =	"rmoy:660Fu6FrM|mroy:660Fu7FRm",
+  vmovdqu_2 =	"rmoy:F30Fu6FrM|mroy:F30Fu7FRm",
+  vmovntdq_2 =	"xroy:660FuE7Rm",
+  vmovntdqa_2 =	"rxoy:660F38u2ArM",
+  vmpsadbw_4 =	"rrmioy:660F3AV42rMU",
+  vpabsb_2 =	"rmoy:660F38u1CrM",
+  vpabsd_2 =	"rmoy:660F38u1ErM",
+  vpabsw_2 =	"rmoy:660F38u1DrM",
+  vpackusdw_3 =	"rrmoy:660F38V2BrM",
+  vpalignr_4 =	"rrmioy:660F3AV0FrMU",
+  vpblendvb_4 =	"rrmroy:660F3AV4CrMs",
+  vpblendw_4 =	"rrmioy:660F3AV0ErMU",
+  vpclmulqdq_4 = "rrmio:660F3AV44rMU",
+  vpcmpeqq_3 =	"rrmoy:660F38V29rM",
+  vpcmpestri_3 = "rmio:660F3Au61rMU",
+  vpcmpestrm_3 = "rmio:660F3Au60rMU",
+  vpcmpgtq_3 =	"rrmoy:660F38V37rM",
+  vpcmpistri_3 = "rmio:660F3Au63rMU",
+  vpcmpistrm_3 = "rmio:660F3Au62rMU",
+  vpextrb_3 =	"rri/do:660F3Au14nRmU|rri/qo:|xri/bo:",
+  vpextrw_3 =	"rri/do:660FuC5rMU|xri/wo:660F3Au15nRmU",
+  vpextrd_3 =	"mri/do:660F3Au16RmU",
+  vpextrq_3 =	"mri/qo:660F3Au16RmU",
+  vphaddw_3 =	"rrmoy:660F38V01rM",
+  vphaddd_3 =	"rrmoy:660F38V02rM",
+  vphaddsw_3 =	"rrmoy:660F38V03rM",
+  vphminposuw_2 = "rmo:660F38u41rM",
+  vphsubw_3 =	"rrmoy:660F38V05rM",
+  vphsubd_3 =	"rrmoy:660F38V06rM",
+  vphsubsw_3 =	"rrmoy:660F38V07rM",
+  vpinsrb_4 =	"rrri/ood:660F3AV20rMU|rrxi/oob:",
+  vpinsrw_4 =	"rrri/ood:660FVC4rMU|rrxi/oow:",
+  vpinsrd_4 =	"rrmi/ood:660F3AV22rMU",
+  vpinsrq_4 =	"rrmi/ooq:660F3AVX22rMU",
+  vpmaddubsw_3 = "rrmoy:660F38V04rM",
+  vpmaxsb_3 =	"rrmoy:660F38V3CrM",
+  vpmaxsd_3 =	"rrmoy:660F38V3DrM",
+  vpmaxuw_3 =	"rrmoy:660F38V3ErM",
+  vpmaxud_3 =	"rrmoy:660F38V3FrM",
+  vpminsb_3 =	"rrmoy:660F38V38rM",
+  vpminsd_3 =	"rrmoy:660F38V39rM",
+  vpminuw_3 =	"rrmoy:660F38V3ArM",
+  vpminud_3 =	"rrmoy:660F38V3BrM",
+  vpmovmskb_2 =	"rr/do:660FuD7rM|rr/dy:660FuLD7rM",
+  vpmovsxbw_2 =	"rroy:660F38u20rM|rx/oq:|rx/yo:",
+  vpmovsxbd_2 =	"rroy:660F38u21rM|rx/od:|rx/yq:",
+  vpmovsxbq_2 =	"rroy:660F38u22rM|rx/ow:|rx/yd:",
+  vpmovsxwd_2 =	"rroy:660F38u23rM|rx/oq:|rx/yo:",
+  vpmovsxwq_2 =	"rroy:660F38u24rM|rx/od:|rx/yq:",
+  vpmovsxdq_2 =	"rroy:660F38u25rM|rx/oq:|rx/yo:",
+  vpmovzxbw_2 =	"rroy:660F38u30rM|rx/oq:|rx/yo:",
+  vpmovzxbd_2 =	"rroy:660F38u31rM|rx/od:|rx/yq:",
+  vpmovzxbq_2 =	"rroy:660F38u32rM|rx/ow:|rx/yd:",
+  vpmovzxwd_2 =	"rroy:660F38u33rM|rx/oq:|rx/yo:",
+  vpmovzxwq_2 =	"rroy:660F38u34rM|rx/od:|rx/yq:",
+  vpmovzxdq_2 =	"rroy:660F38u35rM|rx/oq:|rx/yo:",
+  vpmuldq_3 =	"rrmoy:660F38V28rM",
+  vpmulhrsw_3 =	"rrmoy:660F38V0BrM",
+  vpmulld_3 =	"rrmoy:660F38V40rM",
+  vpshufb_3 =	"rrmoy:660F38V00rM",
+  vpshufd_3 =	"rmioy:660Fu70rMU",
+  vpshufhw_3 =	"rmioy:F30Fu70rMU",
+  vpshuflw_3 =	"rmioy:F20Fu70rMU",
+  vpsignb_3 =	"rrmoy:660F38V08rM",
+  vpsignw_3 =	"rrmoy:660F38V09rM",
+  vpsignd_3 =	"rrmoy:660F38V0ArM",
+  vpslldq_3 =	"rrioy:660Fv737mU",
+  vpsllw_3 =	"rrmoy:660FVF1rM|rrioy:660Fv716mU",
+  vpslld_3 =	"rrmoy:660FVF2rM|rrioy:660Fv726mU",
+  vpsllq_3 =	"rrmoy:660FVF3rM|rrioy:660Fv736mU",
+  vpsraw_3 =	"rrmoy:660FVE1rM|rrioy:660Fv714mU",
+  vpsrad_3 =	"rrmoy:660FVE2rM|rrioy:660Fv724mU",
+  vpsrldq_3 =	"rrioy:660Fv733mU",
+  vpsrlw_3 =	"rrmoy:660FVD1rM|rrioy:660Fv712mU",
+  vpsrld_3 =	"rrmoy:660FVD2rM|rrioy:660Fv722mU",
+  vpsrlq_3 =	"rrmoy:660FVD3rM|rrioy:660Fv732mU",
+  vptest_2 =	"rmoy:660F38u17rM",
+
+  -- AVX2 integer ops
+  vbroadcasti128_2 = "rx/yo:660F38u5ArM",
+  vinserti128_4 = "rrmi/yyo:660F3AV38rMU",
+  vextracti128_3 = "mri/oy:660F3AuL39RmU",
+  vpblendd_4 =	"rrmioy:660F3AV02rMU",
+  vpbroadcastb_2 = "rro:660F38u78rM|rx/ob:|rr/yo:|rx/yb:",
+  vpbroadcastw_2 = "rro:660F38u79rM|rx/ow:|rr/yo:|rx/yw:",
+  vpbroadcastd_2 = "rro:660F38u58rM|rx/od:|rr/yo:|rx/yd:",
+  vpbroadcastq_2 = "rro:660F38u59rM|rx/oq:|rr/yo:|rx/yq:",
+  vpermd_3 =	"rrmy:660F38V36rM",
+  vpermq_3 =	"rmiy:660F3AuX00rMU",
+  -- *vpgather* (!vsib)
+  vperm2i128_4 = "rrmiy:660F3AV46rMU",
+  vpmaskmovd_3 = "rrxoy:660F38V8CrM|xrroy:660F38V8ERm",
+  vpmaskmovq_3 = "rrxoy:660F38VX8CrM|xrroy:660F38VX8ERm",
+  vpsllvd_3 =	"rrmoy:660F38V47rM",
+  vpsllvq_3 =	"rrmoy:660F38VX47rM",
+  vpsravd_3 =	"rrmoy:660F38V46rM",
+  vpsrlvd_3 =	"rrmoy:660F38V45rM",
+  vpsrlvq_3 =	"rrmoy:660F38VX45rM",
+
+  -- Intel ADX
+  adcx_2 =	"rmqd:660F38F6rM",
+  adox_2 =	"rmqd:F30F38F6rM",
+
+  -- BMI1
+  andn_3 =	"rrmqd:0F38VF2rM",
+  bextr_3 =	"rmrqd:0F38wF7rM",
+  blsi_2 =	"rmqd:0F38vF33m",
+  blsmsk_2 =	"rmqd:0F38vF32m",
+  blsr_2 =	"rmqd:0F38vF31m",
+  tzcnt_2 =	"rmqdw:F30FBCrM",
+
+  -- BMI2
+  bzhi_3 =	"rmrqd:0F38wF5rM",
+  mulx_3 =	"rrmqd:F20F38VF6rM",
+  pdep_3 =	"rrmqd:F20F38VF5rM",
+  pext_3 =	"rrmqd:F30F38VF5rM",
+  rorx_3 =	"rmSqd:F20F3AuF0rMS",
+  sarx_3 =	"rmrqd:F30F38wF7rM",
+  shrx_3 =	"rmrqd:F20F38wF7rM",
+  shlx_3 =	"rmrqd:660F38wF7rM",
+
+  -- FMA3
+  vfmaddsub132pd_3 = "rrmoy:660F38VX96rM",
+  vfmaddsub132ps_3 = "rrmoy:660F38V96rM",
+  vfmaddsub213pd_3 = "rrmoy:660F38VXA6rM",
+  vfmaddsub213ps_3 = "rrmoy:660F38VA6rM",
+  vfmaddsub231pd_3 = "rrmoy:660F38VXB6rM",
+  vfmaddsub231ps_3 = "rrmoy:660F38VB6rM",
+
+  vfmsubadd132pd_3 = "rrmoy:660F38VX97rM",
+  vfmsubadd132ps_3 = "rrmoy:660F38V97rM",
+  vfmsubadd213pd_3 = "rrmoy:660F38VXA7rM",
+  vfmsubadd213ps_3 = "rrmoy:660F38VA7rM",
+  vfmsubadd231pd_3 = "rrmoy:660F38VXB7rM",
+  vfmsubadd231ps_3 = "rrmoy:660F38VB7rM",
+
+  vfmadd132pd_3 = "rrmoy:660F38VX98rM",
+  vfmadd132ps_3 = "rrmoy:660F38V98rM",
+  vfmadd132sd_3 = "rrro:660F38VX99rM|rrx/ooq:",
+  vfmadd132ss_3 = "rrro:660F38V99rM|rrx/ood:",
+  vfmadd213pd_3 = "rrmoy:660F38VXA8rM",
+  vfmadd213ps_3 = "rrmoy:660F38VA8rM",
+  vfmadd213sd_3 = "rrro:660F38VXA9rM|rrx/ooq:",
+  vfmadd213ss_3 = "rrro:660F38VA9rM|rrx/ood:",
+  vfmadd231pd_3 = "rrmoy:660F38VXB8rM",
+  vfmadd231ps_3 = "rrmoy:660F38VB8rM",
+  vfmadd231sd_3 = "rrro:660F38VXB9rM|rrx/ooq:",
+  vfmadd231ss_3 = "rrro:660F38VB9rM|rrx/ood:",
+
+  vfmsub132pd_3 = "rrmoy:660F38VX9ArM",
+  vfmsub132ps_3 = "rrmoy:660F38V9ArM",
+  vfmsub132sd_3 = "rrro:660F38VX9BrM|rrx/ooq:",
+  vfmsub132ss_3 = "rrro:660F38V9BrM|rrx/ood:",
+  vfmsub213pd_3 = "rrmoy:660F38VXAArM",
+  vfmsub213ps_3 = "rrmoy:660F38VAArM",
+  vfmsub213sd_3 = "rrro:660F38VXABrM|rrx/ooq:",
+  vfmsub213ss_3 = "rrro:660F38VABrM|rrx/ood:",
+  vfmsub231pd_3 = "rrmoy:660F38VXBArM",
+  vfmsub231ps_3 = "rrmoy:660F38VBArM",
+  vfmsub231sd_3 = "rrro:660F38VXBBrM|rrx/ooq:",
+  vfmsub231ss_3 = "rrro:660F38VBBrM|rrx/ood:",
+
+  vfnmadd132pd_3 = "rrmoy:660F38VX9CrM",
+  vfnmadd132ps_3 = "rrmoy:660F38V9CrM",
+  vfnmadd132sd_3 = "rrro:660F38VX9DrM|rrx/ooq:",
+  vfnmadd132ss_3 = "rrro:660F38V9DrM|rrx/ood:",
+  vfnmadd213pd_3 = "rrmoy:660F38VXACrM",
+  vfnmadd213ps_3 = "rrmoy:660F38VACrM",
+  vfnmadd213sd_3 = "rrro:660F38VXADrM|rrx/ooq:",
+  vfnmadd213ss_3 = "rrro:660F38VADrM|rrx/ood:",
+  vfnmadd231pd_3 = "rrmoy:660F38VXBCrM",
+  vfnmadd231ps_3 = "rrmoy:660F38VBCrM",
+  vfnmadd231sd_3 = "rrro:660F38VXBDrM|rrx/ooq:",
+  vfnmadd231ss_3 = "rrro:660F38VBDrM|rrx/ood:",
+
+  vfnmsub132pd_3 = "rrmoy:660F38VX9ErM",
+  vfnmsub132ps_3 = "rrmoy:660F38V9ErM",
+  vfnmsub132sd_3 = "rrro:660F38VX9FrM|rrx/ooq:",
+  vfnmsub132ss_3 = "rrro:660F38V9FrM|rrx/ood:",
+  vfnmsub213pd_3 = "rrmoy:660F38VXAErM",
+  vfnmsub213ps_3 = "rrmoy:660F38VAErM",
+  vfnmsub213sd_3 = "rrro:660F38VXAFrM|rrx/ooq:",
+  vfnmsub213ss_3 = "rrro:660F38VAFrM|rrx/ood:",
+  vfnmsub231pd_3 = "rrmoy:660F38VXBErM",
+  vfnmsub231ps_3 = "rrmoy:660F38VBErM",
+  vfnmsub231sd_3 = "rrro:660F38VXBFrM|rrx/ooq:",
+  vfnmsub231ss_3 = "rrro:660F38VBFrM|rrx/ood:",
+}
+
+------------------------------------------------------------------------------
+
+-- Arithmetic ops.
+for name,n in pairs{ add = 0, ["or"] = 1, adc = 2, sbb = 3,
+		     ["and"] = 4, sub = 5, xor = 6, cmp = 7 } do
+  local n8 = shl(n, 3)
+  map_op[name.."_2"] = format(
+    "mr:%02XRm|rm:%02XrM|mI1qdw:81%XmI|mS1qdw:83%XmS|Ri1qdwb:%02Xri|mi1qdwb:81%Xmi",
+    1+n8, 3+n8, n, n, 5+n8, n)
+end
+
+-- Shift ops.
+for name,n in pairs{ rol = 0, ror = 1, rcl = 2, rcr = 3,
+		     shl = 4, shr = 5,          sar = 7, sal = 4 } do
+  map_op[name.."_2"] = format("m1:D1%Xm|mC1qdwb:D3%Xm|mi:C1%XmU", n, n, n)
+end
+
+-- Conditional ops.
+for cc,n in pairs(map_cc) do
+  map_op["j"..cc.."_1"] = format("J.:n0F8%XJ", n) -- short: 7%X
+  map_op["set"..cc.."_1"] = format("mb:n0F9%X2m", n)
+  map_op["cmov"..cc.."_2"] = format("rmqdw:0F4%XrM", n) -- P6+
+end
+
+-- FP arithmetic ops.
+for name,n in pairs{ add = 0, mul = 1, com = 2, comp = 3,
+		     sub = 4, subr = 5, div = 6, divr = 7 } do
+  local nc = 0xc0 + shl(n, 3)
+  local nr = nc + (n < 4 and 0 or (n % 2 == 0 and 8 or -8))
+  local fn = "f"..name
+  map_op[fn.."_1"] = format("ff:D8%02Xr|xd:D8%Xm|xq:nDC%Xm", nc, n, n)
+  if n == 2 or n == 3 then
+    map_op[fn.."_2"] = format("Fff:D8%02XR|Fx2d:D8%XM|Fx2q:nDC%XM", nc, n, n)
+  else
+    map_op[fn.."_2"] = format("Fff:D8%02XR|fFf:DC%02Xr|Fx2d:D8%XM|Fx2q:nDC%XM", nc, nr, n, n)
+    map_op[fn.."p_1"] = format("ff:DE%02Xr", nr)
+    map_op[fn.."p_2"] = format("fFf:DE%02Xr", nr)
+  end
+  map_op["fi"..name.."_1"] = format("xd:DA%Xm|xw:nDE%Xm", n, n)
+end
+
+-- FP conditional moves.
+for cc,n in pairs{ b=0, e=1, be=2, u=3, nb=4, ne=5, nbe=6, nu=7 } do
+  local nc = 0xdac0 + shl(band(n, 3), 3) + shl(band(n, 4), 6)
+  map_op["fcmov"..cc.."_1"] = format("ff:%04Xr", nc) -- P6+
+  map_op["fcmov"..cc.."_2"] = format("Fff:%04XR", nc) -- P6+
+end
+
+-- SSE / AVX FP arithmetic ops.
+for name,n in pairs{ sqrt = 1, add = 8, mul = 9,
+		     sub = 12, min = 13, div = 14, max = 15 } do
+  map_op[name.."ps_2"] = format("rmo:0F5%XrM", n)
+  map_op[name.."ss_2"] = format("rro:F30F5%XrM|rx/od:", n)
+  map_op[name.."pd_2"] = format("rmo:660F5%XrM", n)
+  map_op[name.."sd_2"] = format("rro:F20F5%XrM|rx/oq:", n)
+  if n ~= 1 then
+    map_op["v"..name.."ps_3"] = format("rrmoy:0FV5%XrM", n)
+    map_op["v"..name.."ss_3"] = format("rrro:F30FV5%XrM|rrx/ood:", n)
+    map_op["v"..name.."pd_3"] = format("rrmoy:660FV5%XrM", n)
+    map_op["v"..name.."sd_3"] = format("rrro:F20FV5%XrM|rrx/ooq:", n)
+  end
+end
+
+-- SSE2 / AVX / AVX2 integer arithmetic ops (66 0F leaf).
+for name,n in pairs{
+  paddb = 0xFC, paddw = 0xFD, paddd = 0xFE, paddq = 0xD4,
+  paddsb = 0xEC, paddsw = 0xED, packssdw = 0x6B,
+  packsswb = 0x63, packuswb = 0x67, paddusb = 0xDC,
+  paddusw = 0xDD, pand = 0xDB, pandn = 0xDF, pavgb = 0xE0,
+  pavgw = 0xE3, pcmpeqb = 0x74, pcmpeqd = 0x76,
+  pcmpeqw = 0x75, pcmpgtb = 0x64, pcmpgtd = 0x66,
+  pcmpgtw = 0x65, pmaddwd = 0xF5, pmaxsw = 0xEE,
+  pmaxub = 0xDE, pminsw = 0xEA, pminub = 0xDA,
+  pmulhuw = 0xE4, pmulhw = 0xE5, pmullw = 0xD5,
+  pmuludq = 0xF4, por = 0xEB, psadbw = 0xF6, psubb = 0xF8,
+  psubw = 0xF9, psubd = 0xFA, psubq = 0xFB, psubsb = 0xE8,
+  psubsw = 0xE9, psubusb = 0xD8, psubusw = 0xD9,
+  punpckhbw = 0x68, punpckhwd = 0x69, punpckhdq = 0x6A,
+  punpckhqdq = 0x6D, punpcklbw = 0x60, punpcklwd = 0x61,
+  punpckldq = 0x62, punpcklqdq = 0x6C, pxor = 0xEF
+} do
+  map_op[name.."_2"] = format("rmo:660F%02XrM", n)
+  map_op["v"..name.."_3"] = format("rrmoy:660FV%02XrM", n)
+end
+
+------------------------------------------------------------------------------
+
+local map_vexarg = { u = false, v = 1, V = 2, w = 3 }
+
+-- Process pattern string.
+local function dopattern(pat, args, sz, op, needrex)
+  local digit, addin, vex
+  local opcode = 0
+  local szov = sz
+  local narg = 1
+  local rex = 0
+
+  -- Limit number of section buffer positions used by a single dasm_put().
+  -- A single opcode needs a maximum of 6 positions.
+  if secpos+6 > maxsecpos then wflush() end
+
+  -- Process each character.
+  for c in gmatch(pat.."|", ".") do
+    if match(c, "%x") then	-- Hex digit.
+      digit = byte(c) - 48
+      if digit > 48 then digit = digit - 39
+      elseif digit > 16 then digit = digit - 7 end
+      opcode = opcode*16 + digit
+      addin = nil
+    elseif c == "n" then	-- Disable operand size mods for opcode.
+      szov = nil
+    elseif c == "X" then	-- Force REX.W.
+      rex = 8
+    elseif c == "L" then	-- Force VEX.L.
+      vex.l = true
+    elseif c == "r" then	-- Merge 1st operand regno. into opcode.
+      addin = args[1]; opcode = opcode + (addin.reg % 8)
+      if narg < 2 then narg = 2 end
+    elseif c == "R" then	-- Merge 2nd operand regno. into opcode.
+      addin = args[2]; opcode = opcode + (addin.reg % 8)
+      narg = 3
+    elseif c == "m" or c == "M" then	-- Encode ModRM/SIB.
+      local s
+      if addin then
+	s = addin.reg
+	opcode = opcode - band(s, 7)	-- Undo regno opcode merge.
+      else
+	s = band(opcode, 15)	-- Undo last digit.
+	opcode = shr(opcode, 4)
+      end
+      local nn = c == "m" and 1 or 2
+      local t = args[nn]
+      if narg <= nn then narg = nn + 1 end
+      if szov == "q" and rex == 0 then rex = rex + 8 end
+      if t.reg and t.reg > 7 then rex = rex + 1 end
+      if t.xreg and t.xreg > 7 then rex = rex + 2 end
+      if s > 7 then rex = rex + 4 end
+      if needrex then rex = rex + 16 end
+      local psz, sk = wputop(szov, opcode, rex, vex, s < 0, t.vreg or t.vxreg)
+      opcode = nil
+      local imark = sub(pat, -1) -- Force a mark (ugly).
+      -- Put ModRM/SIB with regno/last digit as spare.
+      wputmrmsib(t, imark, s, addin and addin.vreg, psz, sk)
+      addin = nil
+    elseif map_vexarg[c] ~= nil then -- Encode using VEX prefix
+      local b = band(opcode, 255); opcode = shr(opcode, 8)
+      local m = 1
+      if b == 0x38 then m = 2
+      elseif b == 0x3a then m = 3 end
+      if m ~= 1 then b = band(opcode, 255); opcode = shr(opcode, 8) end
+      if b ~= 0x0f then
+	werror("expected `0F', `0F38', or `0F3A' to precede `"..c..
+	  "' in pattern `"..pat.."' for `"..op.."'")
+      end
+      local v = map_vexarg[c]
+      if v then v = remove(args, v) end
+      b = band(opcode, 255)
+      local p = 0
+      if b == 0x66 then p = 1
+      elseif b == 0xf3 then p = 2
+      elseif b == 0xf2 then p = 3 end
+      if p ~= 0 then opcode = shr(opcode, 8) end
+      if opcode ~= 0 then wputop(nil, opcode, 0); opcode = 0 end
+      vex = { m = m, p = p, v = v }
+    else
+      if opcode then -- Flush opcode.
+	if szov == "q" and rex == 0 then rex = rex + 8 end
+	if needrex then rex = rex + 16 end
+	if addin and addin.reg == -1 then
+	  local psz, sk = wputop(szov, opcode - 7, rex, vex, true)
+	  wvreg("opcode", addin.vreg, psz, sk)
+	else
+	  if addin and addin.reg > 7 then rex = rex + 1 end
+	  wputop(szov, opcode, rex, vex)
+	end
+	opcode = nil
+      end
+      if c == "|" then break end
+      if c == "o" then -- Offset (pure 32 bit displacement).
+	wputdarg(args[1].disp); if narg < 2 then narg = 2 end
+      elseif c == "O" then
+	wputdarg(args[2].disp); narg = 3
+      else
+	-- Anything else is an immediate operand.
+	local a = args[narg]
+	narg = narg + 1
+	local mode, imm = a.mode, a.imm
+	if mode == "iJ" and not match(x64 and "J" or "iIJ", c) then
+	  werror("bad operand size for label")
+	end
+	if c == "S" then
+	  wputsbarg(imm)
+	elseif c == "U" then
+	  wputbarg(imm)
+	elseif c == "W" then
+	  wputwarg(imm)
+	elseif c == "i" or c == "I" then
+	  if mode == "iJ" then
+	    wputlabel("IMM_", imm, 1)
+	  elseif mode == "iI" and c == "I" then
+	    waction(sz == "w" and "IMM_WB" or "IMM_DB", imm)
+	  else
+	    wputszarg(sz, imm)
+	  end
+	elseif c == "J" then
+	  if mode == "iPJ" then
+	    waction("REL_A", imm) -- !x64 (secpos)
+	  else
+	    wputlabel("REL_", imm, 2)
+	  end
+	elseif c == "s" then
+	  local reg = a.reg
+	  if reg < 0 then
+	    wputb(0)
+	    wvreg("imm.hi", a.vreg)
+	  else
+	    wputb(shl(reg, 4))
+	  end
+	else
+	  werror("bad char `"..c.."' in pattern `"..pat.."' for `"..op.."'")
+	end
+      end
+    end
+  end
+end
+
+------------------------------------------------------------------------------
+
+-- Mapping of operand modes to short names. Suppress output with '#'.
+local map_modename = {
+  r = "reg", R = "eax", C = "cl", x = "mem", m = "mrm", i = "imm",
+  f = "stx", F = "st0", J = "lbl", ["1"] = "1",
+  I = "#", S = "#", O = "#",
+}
+
+-- Return a table/string showing all possible operand modes.
+local function templatehelp(template, nparams)
+  if nparams == 0 then return "" end
+  local t = {}
+  for tm in gmatch(template, "[^%|]+") do
+    local s = map_modename[sub(tm, 1, 1)]
+    s = s..gsub(sub(tm, 2, nparams), ".", function(c)
+      return ", "..map_modename[c]
+    end)
+    if not match(s, "#") then t[#t+1] = s end
+  end
+  return t
+end
+
+-- Match operand modes against mode match part of template.
+local function matchtm(tm, args)
+  for i=1,#args do
+    if not match(args[i].mode, sub(tm, i, i)) then return end
+  end
+  return true
+end
+
+-- Handle opcodes defined with template strings.
+map_op[".template__"] = function(params, template, nparams)
+  if not params then return templatehelp(template, nparams) end
+  local args = {}
+
+  -- Zero-operand opcodes have no match part.
+  if #params == 0 then
+    dopattern(template, args, "d", params.op, nil)
+    return
+  end
+
+  -- Determine common operand size (coerce undefined size) or flag as mixed.
+  local sz, szmix, needrex
+  for i,p in ipairs(params) do
+    args[i] = parseoperand(p)
+    local nsz = args[i].opsize
+    if nsz then
+      if sz and sz ~= nsz then szmix = true else sz = nsz end
+    end
+    local nrex = args[i].needrex
+    if nrex ~= nil then
+      if needrex == nil then
+	needrex = nrex
+      elseif needrex ~= nrex then
+	werror("bad mix of byte-addressable registers")
+      end
+    end
+  end
+
+  -- Try all match:pattern pairs (separated by '|').
+  local gotmatch, lastpat
+  for tm in gmatch(template, "[^%|]+") do
+    -- Split off size match (starts after mode match) and pattern string.
+    local szm, pat = match(tm, "^(.-):(.*)$", #args+1)
+    if pat == "" then pat = lastpat else lastpat = pat end
+    if matchtm(tm, args) then
+      local prefix = sub(szm, 1, 1)
+      if prefix == "/" then -- Exactly match leading operand sizes.
+	for i = #szm,1,-1 do
+	  if i == 1 then
+	    dopattern(pat, args, sz, params.op, needrex) -- Process pattern.
+	    return
+	  elseif args[i-1].opsize ~= sub(szm, i, i) then
+	    break
+	  end
+	end
+      else -- Match common operand size.
+	local szp = sz
+	if szm == "" then szm = x64 and "qdwb" or "dwb" end -- Default sizes.
+	if prefix == "1" then szp = args[1].opsize; szmix = nil
+	elseif prefix == "2" then szp = args[2].opsize; szmix = nil end
+	if not szmix and (prefix == "." or match(szm, szp or "#")) then
+	  dopattern(pat, args, szp, params.op, needrex) -- Process pattern.
+	  return
+	end
+      end
+      gotmatch = true
+    end
+  end
+
+  local msg = "bad operand mode"
+  if gotmatch then
+    if szmix then
+      msg = "mixed operand size"
+    else
+      msg = sz and "bad operand size" or "missing operand size"
+    end
+  end
+
+  werror(msg.." in `"..opmodestr(params.op, args).."'")
+end
+
+------------------------------------------------------------------------------
+
+-- x64-specific opcode for 64 bit immediates and displacements.
+if x64 then
+  function map_op.mov64_2(params)
+    if not params then return { "reg, imm", "reg, [disp]", "[disp], reg" } end
+    if secpos+2 > maxsecpos then wflush() end
+    local opcode, op64, sz, rex, vreg
+    local op64 = match(params[1], "^%[%s*(.-)%s*%]$")
+    if op64 then
+      local a = parseoperand(params[2])
+      if a.mode ~= "rmR" then werror("bad operand mode") end
+      sz = a.opsize
+      rex = sz == "q" and 8 or 0
+      opcode = 0xa3
+    else
+      op64 = match(params[2], "^%[%s*(.-)%s*%]$")
+      local a = parseoperand(params[1])
+      if op64 then
+	if a.mode ~= "rmR" then werror("bad operand mode") end
+	sz = a.opsize
+	rex = sz == "q" and 8 or 0
+	opcode = 0xa1
+      else
+	if sub(a.mode, 1, 1) ~= "r" or a.opsize ~= "q" then
+	  werror("bad operand mode")
+	end
+	op64 = params[2]
+	if a.reg == -1 then
+	  vreg = a.vreg
+	  opcode = 0xb8
+	else
+	  opcode = 0xb8 + band(a.reg, 7)
+	end
+	rex = a.reg > 7 and 9 or 8
+      end
+    end
+    local psz, sk = wputop(sz, opcode, rex, nil, vreg)
+    wvreg("opcode", vreg, psz, sk)
+    waction("IMM_D", format("(unsigned int)(%s)", op64))
+    waction("IMM_D", format("(unsigned int)((%s)>>32)", op64))
+  end
+end
+
+------------------------------------------------------------------------------
+
+-- Pseudo-opcodes for data storage.
+local function op_data(params)
+  if not params then return "imm..." end
+  local sz = sub(params.op, 2, 2)
+  if sz == "l" then sz = "d" elseif sz == "a" then sz = addrsize end
+  for _,p in ipairs(params) do
+    local a = parseoperand(p, sz == "q")
+    if sub(a.mode, 1, 1) ~= "i" or (a.opsize and a.opsize ~= sz) then
+      werror("bad mode or size in `"..p.."'")
+    end
+    if a.mode == "iJ" then
+      wputlabel("IMM_", a.imm, 1)
+    elseif sz == "q" then
+      wputqarg(a.imm)
+    else
+      wputszarg(sz, a.imm)
+    end
+    if secpos+2 > maxsecpos then wflush() end
+  end
+end
+
+map_op[".byte_*"] = op_data
+map_op[".sbyte_*"] = op_data
+map_op[".word_*"] = op_data
+map_op[".dword_*"] = op_data
+map_op[".qword_*"] = op_data
+map_op[".aword_*"] = op_data
+map_op[".long_*"] = op_data
+map_op[".quad_*"] = op_data
+map_op[".addr_*"] = op_data
+
+------------------------------------------------------------------------------
+
+-- Pseudo-opcode to mark the position where the action list is to be emitted.
+map_op[".actionlist_1"] = function(params)
+  if not params then return "cvar" end
+  local name = params[1] -- No syntax check. You get to keep the pieces.
+  wline(function(out) writeactions(out, name) end)
+end
+
+-- Pseudo-opcode to mark the position where the global enum is to be emitted.
+map_op[".globals_1"] = function(params)
+  if not params then return "prefix" end
+  local prefix = params[1] -- No syntax check. You get to keep the pieces.
+  wline(function(out) writeglobals(out, prefix) end)
+end
+
+-- Pseudo-opcode to mark the position where the global names are to be emitted.
+map_op[".globalnames_1"] = function(params)
+  if not params then return "cvar" end
+  local name = params[1] -- No syntax check. You get to keep the pieces.
+  wline(function(out) writeglobalnames(out, name) end)
+end
+
+-- Pseudo-opcode to mark the position where the extern names are to be emitted.
+map_op[".externnames_1"] = function(params)
+  if not params then return "cvar" end
+  local name = params[1] -- No syntax check. You get to keep the pieces.
+  wline(function(out) writeexternnames(out, name) end)
+end
+
+------------------------------------------------------------------------------
+
+-- Label pseudo-opcode (converted from trailing colon form).
+map_op[".label_2"] = function(params)
+  if not params then return "[1-9] | ->global | =>pcexpr  [, addr]" end
+  if secpos+2 > maxsecpos then wflush() end
+  local a = parseoperand(params[1])
+  local mode, imm = a.mode, a.imm
+  if type(imm) == "number" and (mode == "iJ" or (imm >= 1 and imm <= 9)) then
+    -- Local label (1: ... 9:) or global label (->global:).
+    waction("LABEL_LG", nil, 1)
+    wputxb(imm)
+  elseif mode == "iJ" then
+    -- PC label (=>pcexpr:).
+    waction("LABEL_PC", imm)
+  else
+    werror("bad label definition")
+  end
+  -- SETLABEL must immediately follow LABEL_LG/LABEL_PC.
+  local addr = params[2]
+  if addr then
+    local a = parseoperand(addr)
+    if a.mode == "iPJ" then
+      waction("SETLABEL", a.imm)
+    else
+      werror("bad label assignment")
+    end
+  end
+end
+map_op[".label_1"] = map_op[".label_2"]
+
+------------------------------------------------------------------------------
+
+-- Alignment pseudo-opcode.
+map_op[".align_1"] = function(params)
+  if not params then return "numpow2" end
+  if secpos+1 > maxsecpos then wflush() end
+  local align = tonumber(params[1]) or map_opsizenum[map_opsize[params[1]]]
+  if align then
+    local x = align
+    -- Must be a power of 2 in the range (2 ... 256).
+    for i=1,8 do
+      x = x / 2
+      if x == 1 then
+	waction("ALIGN", nil, 1)
+	wputxb(align-1) -- Action byte is 2**n-1.
+	return
+      end
+    end
+  end
+  werror("bad alignment")
+end
+
+-- Spacing pseudo-opcode.
+map_op[".space_2"] = function(params)
+  if not params then return "num [, filler]" end
+  if secpos+1 > maxsecpos then wflush() end
+  waction("SPACE", params[1])
+  local fill = params[2]
+  if fill then
+    fill = tonumber(fill)
+    if not fill or fill < 0 or fill > 255 then werror("bad filler") end
+  end
+  wputxb(fill or 0)
+end
+map_op[".space_1"] = map_op[".space_2"]
+
+------------------------------------------------------------------------------
+
+-- Pseudo-opcode for (primitive) type definitions (map to C types).
+map_op[".type_3"] = function(params, nparams)
+  if not params then
+    return nparams == 2 and "name, ctype" or "name, ctype, reg"
+  end
+  local name, ctype, reg = params[1], params[2], params[3]
+  if not match(name, "^[%a_][%w_]*$") then
+    werror("bad type name `"..name.."'")
+  end
+  local tp = map_type[name]
+  if tp then
+    werror("duplicate type `"..name.."'")
+  end
+  if reg and not map_reg_valid_base[reg] then
+    werror("bad base register `"..(map_reg_rev[reg] or reg).."'")
+  end
+  -- Add #type to defines. A bit unclean to put it in map_archdef.
+  map_archdef["#"..name] = "sizeof("..ctype..")"
+  -- Add new type and emit shortcut define.
+  local num = ctypenum + 1
+  map_type[name] = {
+    ctype = ctype,
+    ctypefmt = format("Dt%X(%%s)", num),
+    reg = reg,
+  }
+  wline(format("#define Dt%X(_V) (int)(ptrdiff_t)&(((%s *)0)_V)", num, ctype))
+  ctypenum = num
+end
+map_op[".type_2"] = map_op[".type_3"]
+
+-- Dump type definitions.
+local function dumptypes(out, lvl)
+  local t = {}
+  for name in pairs(map_type) do t[#t+1] = name end
+  sort(t)
+  out:write("Type definitions:\n")
+  for _,name in ipairs(t) do
+    local tp = map_type[name]
+    local reg = tp.reg and map_reg_rev[tp.reg] or ""
+    out:write(format("  %-20s %-20s %s\n", name, tp.ctype, reg))
+  end
+  out:write("\n")
+end
+
+------------------------------------------------------------------------------
+
+-- Set the current section.
+function _M.section(num)
+  waction("SECTION")
+  wputxb(num)
+  wflush(true) -- SECTION is a terminal action.
+end
+
+------------------------------------------------------------------------------
+
+-- Dump architecture description.
+function _M.dumparch(out)
+  out:write(format("DynASM %s version %s, released %s\n\n",
+    _info.arch, _info.version, _info.release))
+  dumpregs(out)
+  dumpactions(out)
+end
+
+-- Dump all user defined elements.
+function _M.dumpdef(out, lvl)
+  dumptypes(out, lvl)
+  dumpglobals(out, lvl)
+  dumpexterns(out, lvl)
+end
+
+------------------------------------------------------------------------------
+
+-- Pass callbacks from/to the DynASM core.
+function _M.passcb(wl, we, wf, ww)
+  wline, werror, wfatal, wwarn = wl, we, wf, ww
+  return wflush
+end
+
+-- Setup the arch-specific module.
+function _M.setup(arch, opt)
+  g_arch, g_opt = arch, opt
+end
+
+-- Merge the core maps and the arch-specific maps.
+function _M.mergemaps(map_coreop, map_def)
+  setmetatable(map_op, { __index = map_coreop })
+  setmetatable(map_def, { __index = map_archdef })
+  return map_op, map_def
+end
+
+return _M
+
+------------------------------------------------------------------------------
+

dynasm/dynasm.lua

+------------------------------------------------------------------------------
+-- DynASM. A dynamic assembler for code generation engines.
+-- Originally designed and implemented for LuaJIT.
+--
+-- Copyright (C) 2005-2022 Mike Pall. All rights reserved.
+-- See below for full copyright notice.
+------------------------------------------------------------------------------
+
+-- Application information.
+local _info = {
+  name =	"DynASM",
+  description =	"A dynamic assembler for code generation engines",
+  version =	"1.5.0",
+  vernum =	 10500,
+  release =	"2021-05-02",
+  author =	"Mike Pall",
+  url =		"https://luajit.org/dynasm.html",
+  license =	"MIT",
+  copyright =	[[
+Copyright (C) 2005-2022 Mike Pall. All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+[ MIT license: https://www.opensource.org/licenses/mit-license.php ]
+]],
+}
+
+-- Cache library functions.
+local type, pairs, ipairs = type, pairs, ipairs
+local pcall, error, assert = pcall, error, assert
+local _s = string
+local sub, match, gmatch, gsub = _s.sub, _s.match, _s.gmatch, _s.gsub
+local format, rep, upper = _s.format, _s.rep, _s.upper
+local _t = table
+local insert, remove, concat, sort = _t.insert, _t.remove, _t.concat, _t.sort
+local exit = os.exit
+local io = io
+local stdin, stdout, stderr = io.stdin, io.stdout, io.stderr
+
+------------------------------------------------------------------------------
+
+-- Program options.
+local g_opt = {}
+
+-- Global state for current file.
+local g_fname, g_curline, g_indent, g_lineno, g_synclineno, g_arch
+local g_errcount = 0
+
+-- Write buffer for output file.
+local g_wbuffer, g_capbuffer
+
+------------------------------------------------------------------------------
+
+-- Write an output line (or callback function) to the buffer.
+local function wline(line, needindent)
+  local buf = g_capbuffer or g_wbuffer
+  buf[#buf+1] = needindent and g_indent..line or line
+  g_synclineno = g_synclineno + 1
+end
+
+-- Write assembler line as a comment, if requestd.
+local function wcomment(aline)
+  if g_opt.comment then
+    wline(g_opt.comment..aline..g_opt.endcomment, true)
+  end
+end
+
+-- Resync CPP line numbers.
+local function wsync()
+  if g_synclineno ~= g_lineno and g_opt.cpp then
+    wline("#line "..g_lineno..' "'..g_fname..'"')
+    g_synclineno = g_lineno
+  end
+end
+
+-- Dummy action flush function. Replaced with arch-specific function later.
+local function wflush(term)
+end
+
+-- Dump all buffered output lines.
+local function wdumplines(out, buf)
+  for _,line in ipairs(buf) do
+    if type(line) == "string" then
+      assert(out:write(line, "\n"))
+    else
+      -- Special callback to dynamically insert lines after end of processing.
+      line(out)
+    end
+  end
+end
+
+------------------------------------------------------------------------------
+
+-- Emit an error. Processing continues with next statement.
+local function werror(msg)
+  error(format("%s:%s: error: %s:\n%s", g_fname, g_lineno, msg, g_curline), 0)
+end
+
+-- Emit a fatal error. Processing stops.
+local function wfatal(msg)
+  g_errcount = "fatal"
+  werror(msg)
+end
+
+-- Print a warning. Processing continues.
+local function wwarn(msg)
+  stderr:write(format("%s:%s: warning: %s:\n%s\n",
+    g_fname, g_lineno, msg, g_curline))
+end
+
+-- Print caught error message. But suppress excessive errors.
+local function wprinterr(...)
+  if type(g_errcount) == "number" then
+    -- Regular error.
+    g_errcount = g_errcount + 1
+    if g_errcount < 21 then -- Seems to be a reasonable limit.
+      stderr:write(...)
+    elseif g_errcount == 21 then
+      stderr:write(g_fname,
+	":*: warning: too many errors (suppressed further messages).\n")
+    end
+  else
+    -- Fatal error.
+    stderr:write(...)
+    return true -- Stop processing.
+  end
+end
+
+------------------------------------------------------------------------------
+
+-- Map holding all option handlers.
+local opt_map = {}
+local opt_current
+
+-- Print error and exit with error status.
+local function opterror(...)
+  stderr:write("dynasm.lua: ERROR: ", ...)
+  stderr:write("\n")
+  exit(1)
+end
+
+-- Get option parameter.
+local function optparam(args)
+  local argn = args.argn
+  local p = args[argn]
+  if not p then
+    opterror("missing parameter for option `", opt_current, "'.")
+  end
+  args.argn = argn + 1
+  return p
+end
+
+------------------------------------------------------------------------------
+
+-- Core pseudo-opcodes.
+local map_coreop = {}
+-- Dummy opcode map. Replaced by arch-specific map.
+local map_op = {}
+
+-- Forward declarations.
+local dostmt
+local readfile
+
+------------------------------------------------------------------------------
+
+-- Map for defines (initially empty, chains to arch-specific map).
+local map_def = {}
+
+-- Pseudo-opcode to define a substitution.
+map_coreop[".define_2"] = function(params, nparams)
+  if not params then return nparams == 1 and "name" or "name, subst" end
+  local name, def = params[1], params[2] or "1"
+  if not match(name, "^[%a_][%w_]*$") then werror("bad or duplicate define") end
+  map_def[name] = def
+end
+map_coreop[".define_1"] = map_coreop[".define_2"]
+
+-- Define a substitution on the command line.
+function opt_map.D(args)
+  local namesubst = optparam(args)
+  local name, subst = match(namesubst, "^([%a_][%w_]*)=(.*)$")
+  if name then
+    map_def[name] = subst
+  elseif match(namesubst, "^[%a_][%w_]*$") then
+    map_def[namesubst] = "1"
+  else
+    opterror("bad define")
+  end
+end
+
+-- Undefine a substitution on the command line.
+function opt_map.U(args)
+  local name = optparam(args)
+  if match(name, "^[%a_][%w_]*$") then
+    map_def[name] = nil
+  else
+    opterror("bad define")
+  end
+end
+
+-- Helper for definesubst.
+local gotsubst
+
+local function definesubst_one(word)
+  local subst = map_def[word]
+  if subst then gotsubst = word; return subst else return word end
+end
+
+-- Iteratively substitute defines.
+local function definesubst(stmt)
+  -- Limit number of iterations.
+  for i=1,100 do
+    gotsubst = false
+    stmt = gsub(stmt, "#?[%w_]+", definesubst_one)
+    if not gotsubst then break end
+  end
+  if gotsubst then wfatal("recursive define involving `"..gotsubst.."'") end
+  return stmt
+end
+
+-- Dump all defines.
+local function dumpdefines(out, lvl)
+  local t = {}
+  for name in pairs(map_def) do
+    t[#t+1] = name
+  end
+  sort(t)
+  out:write("Defines:\n")
+  for _,name in ipairs(t) do
+    local subst = map_def[name]
+    if g_arch then subst = g_arch.revdef(subst) end
+    out:write(format("  %-20s %s\n", name, subst))
+  end
+  out:write("\n")
+end
+
+------------------------------------------------------------------------------
+
+-- Support variables for conditional assembly.
+local condlevel = 0
+local condstack = {}
+
+-- Evaluate condition with a Lua expression. Substitutions already performed.
+local function cond_eval(cond)
+  local func, err
+  if setfenv then
+    func, err = loadstring("return "..cond, "=expr")
+  else
+    -- No globals. All unknown identifiers evaluate to nil.
+    func, err = load("return "..cond, "=expr", "t", {})
+  end
+  if func then
+    if setfenv then
+      setfenv(func, {}) -- No globals. All unknown identifiers evaluate to nil.
+    end
+    local ok, res = pcall(func)
+    if ok then
+      if res == 0 then return false end -- Oh well.
+      return not not res
+    end
+    err = res
+  end
+  wfatal("bad condition: "..err)
+end
+
+-- Skip statements until next conditional pseudo-opcode at the same level.
+local function stmtskip()
+  local dostmt_save = dostmt
+  local lvl = 0
+  dostmt = function(stmt)
+    local op = match(stmt, "^%s*(%S+)")
+    if op == ".if" then
+      lvl = lvl + 1
+    elseif lvl ~= 0 then
+      if op == ".endif" then lvl = lvl - 1 end
+    elseif op == ".elif" or op == ".else" or op == ".endif" then
+      dostmt = dostmt_save
+      dostmt(stmt)
+    end
+  end
+end
+
+-- Pseudo-opcodes for conditional assembly.
+map_coreop[".if_1"] = function(params)
+  if not params then return "condition" end
+  local lvl = condlevel + 1
+  local res = cond_eval(params[1])
+  condlevel = lvl
+  condstack[lvl] = res
+  if not res then stmtskip() end
+end
+
+map_coreop[".elif_1"] = function(params)
+  if not params then return "condition" end
+  if condlevel == 0 then wfatal(".elif without .if") end
+  local lvl = condlevel
+  local res = condstack[lvl]
+  if res then
+    if res == "else" then wfatal(".elif after .else") end
+  else
+    res = cond_eval(params[1])
+    if res then
+      condstack[lvl] = res
+      return
+    end
+  end
+  stmtskip()
+end
+
+map_coreop[".else_0"] = function(params)
+  if condlevel == 0 then wfatal(".else without .if") end
+  local lvl = condlevel
+  local res = condstack[lvl]
+  condstack[lvl] = "else"
+  if res then
+    if res == "else" then wfatal(".else after .else") end
+    stmtskip()
+  end
+end
+
+map_coreop[".endif_0"] = function(params)
+  local lvl = condlevel
+  if lvl == 0 then wfatal(".endif without .if") end
+  condlevel = lvl - 1
+end
+
+-- Check for unfinished conditionals.
+local function checkconds()
+  if g_errcount ~= "fatal" and condlevel ~= 0 then
+    wprinterr(g_fname, ":*: error: unbalanced conditional\n")
+  end
+end
+
+------------------------------------------------------------------------------
+
+-- Search for a file in the given path and open it for reading.
+local function pathopen(path, name)
+  local dirsep = package and match(package.path, "\\") and "\\" or "/"
+  for _,p in ipairs(path) do
+    local fullname = p == "" and name or p..dirsep..name
+    local fin = io.open(fullname, "r")
+    if fin then
+      g_fname = fullname
+      return fin
+    end
+  end
+end
+
+-- Include a file.
+map_coreop[".include_1"] = function(params)
+  if not params then return "filename" end
+  local name = params[1]
+  -- Save state. Ugly, I know. but upvalues are fast.
+  local gf, gl, gcl, gi = g_fname, g_lineno, g_curline, g_indent
+  -- Read the included file.
+  local fatal = readfile(pathopen(g_opt.include, name) or
+			 wfatal("include file `"..name.."' not found"))
+  -- Restore state.
+  g_synclineno = -1
+  g_fname, g_lineno, g_curline, g_indent = gf, gl, gcl, gi
+  if fatal then wfatal("in include file") end
+end
+
+-- Make .include and conditionals initially available, too.
+map_op[".include_1"] = map_coreop[".include_1"]
+map_op[".if_1"] = map_coreop[".if_1"]
+map_op[".elif_1"] = map_coreop[".elif_1"]
+map_op[".else_0"] = map_coreop[".else_0"]
+map_op[".endif_0"] = map_coreop[".endif_0"]
+
+------------------------------------------------------------------------------
+
+-- Support variables for macros.
+local mac_capture, mac_lineno, mac_name
+local mac_active = {}
+local mac_list = {}
+
+-- Pseudo-opcode to define a macro.
+map_coreop[".macro_*"] = function(mparams)
+  if not mparams then return "name [, params...]" end
+  -- Split off and validate macro name.
+  local name = remove(mparams, 1)
+  if not name then werror("missing macro name") end
+  if not (match(name, "^[%a_][%w_%.]*$") or match(name, "^%.[%w_%.]*$")) then
+    wfatal("bad macro name `"..name.."'")
+  end
+  -- Validate macro parameter names.
+  local mdup = {}
+  for _,mp in ipairs(mparams) do
+    if not match(mp, "^[%a_][%w_]*$") then
+      wfatal("bad macro parameter name `"..mp.."'")
+    end
+    if mdup[mp] then wfatal("duplicate macro parameter name `"..mp.."'") end
+    mdup[mp] = true
+  end
+  -- Check for duplicate or recursive macro definitions.
+  local opname = name.."_"..#mparams
+  if map_op[opname] or map_op[name.."_*"] then
+    wfatal("duplicate macro `"..name.."' ("..#mparams.." parameters)")
+  end
+  if mac_capture then wfatal("recursive macro definition") end
+
+  -- Enable statement capture.
+  local lines = {}
+  mac_lineno = g_lineno
+  mac_name = name
+  mac_capture = function(stmt) -- Statement capture function.
+    -- Stop macro definition with .endmacro pseudo-opcode.
+    if not match(stmt, "^%s*.endmacro%s*$") then
+      lines[#lines+1] = stmt
+      return
+    end
+    mac_capture = nil
+    mac_lineno = nil
+    mac_name = nil
+    mac_list[#mac_list+1] = opname
+    -- Add macro-op definition.
+    map_op[opname] = function(params)
+      if not params then return mparams, lines end
+      -- Protect against recursive macro invocation.
+      if mac_active[opname] then wfatal("recursive macro invocation") end
+      mac_active[opname] = true
+      -- Setup substitution map.
+      local subst = {}
+      for i,mp in ipairs(mparams) do subst[mp] = params[i] end
+      local mcom
+      if g_opt.maccomment and g_opt.comment then
+	mcom = " MACRO "..name.." ("..#mparams..")"
+	wcomment("{"..mcom)
+      end
+      -- Loop through all captured statements
+      for _,stmt in ipairs(lines) do
+	-- Substitute macro parameters.
+	local st = gsub(stmt, "[%w_]+", subst)
+	st = definesubst(st)
+	st = gsub(st, "%s*%.%.%s*", "") -- Token paste a..b.
+	if mcom and sub(st, 1, 1) ~= "|" then wcomment(st) end
+	-- Emit statement. Use a protected call for better diagnostics.
+	local ok, err = pcall(dostmt, st)
+	if not ok then
+	  -- Add the captured statement to the error.
+	  wprinterr(err, "\n", g_indent, "|  ", stmt,
+		    "\t[MACRO ", name, " (", #mparams, ")]\n")
+	end
+      end
+      if mcom then wcomment("}"..mcom) end
+      mac_active[opname] = nil
+    end
+  end
+end
+
+-- An .endmacro pseudo-opcode outside of a macro definition is an error.
+map_coreop[".endmacro_0"] = function(params)
+  wfatal(".endmacro without .macro")
+end
+
+-- Dump all macros and their contents (with -PP only).
+local function dumpmacros(out, lvl)
+  sort(mac_list)
+  out:write("Macros:\n")
+  for _,opname in ipairs(mac_list) do
+    local name = sub(opname, 1, -3)
+    local params, lines = map_op[opname]()
+    out:write(format("  %-20s %s\n", name, concat(params, ", ")))
+    if lvl > 1 then
+      for _,line in ipairs(lines) do
+	out:write("  |", line, "\n")
+      end
+      out:write("\n")
+    end
+  end
+  out:write("\n")
+end
+
+-- Check for unfinished macro definitions.
+local function checkmacros()
+  if mac_capture then
+    wprinterr(g_fname, ":", mac_lineno,
+	      ": error: unfinished .macro `", mac_name ,"'\n")
+  end
+end
+
+------------------------------------------------------------------------------
+
+-- Support variables for captures.
+local cap_lineno, cap_name
+local cap_buffers = {}
+local cap_used = {}
+
+-- Start a capture.
+map_coreop[".capture_1"] = function(params)
+  if not params then return "name" end
+  wflush()
+  local name = params[1]
+  if not match(name, "^[%a_][%w_]*$") then
+    wfatal("bad capture name `"..name.."'")
+  end
+  if cap_name then
+    wfatal("already capturing to `"..cap_name.."' since line "..cap_lineno)
+  end
+  cap_name = name
+  cap_lineno = g_lineno
+  -- Create or continue a capture buffer and start the output line capture.
+  local buf = cap_buffers[name]
+  if not buf then buf = {}; cap_buffers[name] = buf end
+  g_capbuffer = buf
+  g_synclineno = 0
+end
+
+-- Stop a capture.
+map_coreop[".endcapture_0"] = function(params)
+  wflush()
+  if not cap_name then wfatal(".endcapture without a valid .capture") end
+  cap_name = nil
+  cap_lineno = nil
+  g_capbuffer = nil
+  g_synclineno = 0
+end
+
+-- Dump a capture buffer.
+map_coreop[".dumpcapture_1"] = function(params)
+  if not params then return "name" end
+  wflush()
+  local name = params[1]
+  if not match(name, "^[%a_][%w_]*$") then
+    wfatal("bad capture name `"..name.."'")
+  end
+  cap_used[name] = true
+  wline(function(out)
+    local buf = cap_buffers[name]
+    if buf then wdumplines(out, buf) end
+  end)
+  g_synclineno = 0
+end
+
+-- Dump all captures and their buffers (with -PP only).
+local function dumpcaptures(out, lvl)
+  out:write("Captures:\n")
+  for name,buf in pairs(cap_buffers) do
+    out:write(format("  %-20s %4s)\n", name, "("..#buf))
+    if lvl > 1 then
+      local bar = rep("=", 76)
+      out:write("  ", bar, "\n")
+      for _,line in ipairs(buf) do
+	out:write("  ", line, "\n")
+      end
+      out:write("  ", bar, "\n\n")
+    end
+  end
+  out:write("\n")
+end
+
+-- Check for unfinished or unused captures.
+local function checkcaptures()
+  if cap_name then
+    wprinterr(g_fname, ":", cap_lineno,
+	      ": error: unfinished .capture `", cap_name,"'\n")
+    return
+  end
+  for name in pairs(cap_buffers) do
+    if not cap_used[name] then
+      wprinterr(g_fname, ":*: error: missing .dumpcapture ", name ,"\n")
+    end
+  end
+end
+
+------------------------------------------------------------------------------
+
+-- Sections names.
+local map_sections = {}
+
+-- Pseudo-opcode to define code sections.
+-- TODO: Data sections, BSS sections. Needs extra C code and API.
+map_coreop[".section_*"] = function(params)
+  if not params then return "name..." end
+  if #map_sections > 0 then werror("duplicate section definition") end
+  wflush()
+  for sn,name in ipairs(params) do
+    local opname = "."..name.."_0"
+    if not match(name, "^[%a][%w_]*$") or
+       map_op[opname] or map_op["."..name.."_*"] then
+      werror("bad section name `"..name.."'")
+    end
+    map_sections[#map_sections+1] = name
+    wline(format("#define DASM_SECTION_%s\t%d", upper(name), sn-1))
+    map_op[opname] = function(params) g_arch.section(sn-1) end
+  end
+  wline(format("#define DASM_MAXSECTION\t\t%d", #map_sections))
+end
+
+-- Dump all sections.
+local function dumpsections(out, lvl)
+  out:write("Sections:\n")
+  for _,name in ipairs(map_sections) do
+    out:write(format("  %s\n", name))
+  end
+  out:write("\n")
+end
+
+------------------------------------------------------------------------------
+
+-- Replacement for customized Lua, which lacks the package library.
+local prefix = ""
+if not require then
+  function require(name)
+    local fp = assert(io.open(prefix..name..".lua"))
+    local s = fp:read("*a")
+    assert(fp:close())
+    return assert(loadstring(s, "@"..name..".lua"))()
+  end
+end
+
+-- Load architecture-specific module.
+local function loadarch(arch)
+  if not match(arch, "^[%w_]+$") then return "bad arch name" end
+  _G._map_def = map_def
+  local ok, m_arch = pcall(require, "dasm_"..arch)
+  if not ok then return "cannot load module: "..m_arch end
+  g_arch = m_arch
+  wflush = m_arch.passcb(wline, werror, wfatal, wwarn)
+  m_arch.setup(arch, g_opt)
+  map_op, map_def = m_arch.mergemaps(map_coreop, map_def)
+end
+
+-- Dump architecture description.
+function opt_map.dumparch(args)
+  local name = optparam(args)
+  if not g_arch then
+    local err = loadarch(name)
+    if err then opterror(err) end
+  end
+
+  local t = {}
+  for name in pairs(map_coreop) do t[#t+1] = name end
+  for name in pairs(map_op) do t[#t+1] = name end
+  sort(t)
+
+  local out = stdout
+  local _arch = g_arch._info
+  out:write(format("%s version %s, released %s, %s\n",
+    _info.name, _info.version, _info.release, _info.url))
+  g_arch.dumparch(out)
+
+  local pseudo = true
+  out:write("Pseudo-Opcodes:\n")
+  for _,sname in ipairs(t) do
+    local name, nparam = match(sname, "^(.+)_([0-9%*])$")
+    if name then
+      if pseudo and sub(name, 1, 1) ~= "." then
+	out:write("\nOpcodes:\n")
+	pseudo = false
+      end
+      local f = map_op[sname]
+      local s
+      if nparam ~= "*" then nparam = nparam + 0 end
+      if nparam == 0 then
+	s = ""
+      elseif type(f) == "string" then
+	s = map_op[".template__"](nil, f, nparam)
+      else
+	s = f(nil, nparam)
+      end
+      if type(s) == "table" then
+	for _,s2 in ipairs(s) do
+	  out:write(format("  %-12s %s\n", name, s2))
+	end
+      else
+	out:write(format("  %-12s %s\n", name, s))
+      end
+    end
+  end
+  out:write("\n")
+  exit(0)
+end
+
+-- Pseudo-opcode to set the architecture.
+-- Only initially available (map_op is replaced when called).
+map_op[".arch_1"] = function(params)
+  if not params then return "name" end
+  local err = loadarch(params[1])
+  if err then wfatal(err) end
+  wline(format("#if DASM_VERSION != %d", _info.vernum))
+  wline('#error "Version mismatch between DynASM and included encoding engine"')
+  wline("#endif")
+end
+
+-- Dummy .arch pseudo-opcode to improve the error report.
+map_coreop[".arch_1"] = function(params)
+  if not params then return "name" end
+  wfatal("duplicate .arch statement")
+end
+
+------------------------------------------------------------------------------
+
+-- Dummy pseudo-opcode. Don't confuse '.nop' with 'nop'.
+map_coreop[".nop_*"] = function(params)
+  if not params then return "[ignored...]" end
+end
+
+-- Pseudo-opcodes to raise errors.
+map_coreop[".error_1"] = function(params)
+  if not params then return "message" end
+  werror(params[1])
+end
+
+map_coreop[".fatal_1"] = function(params)
+  if not params then return "message" end
+  wfatal(params[1])
+end
+
+-- Dump all user defined elements.
+local function dumpdef(out)
+  local lvl = g_opt.dumpdef
+  if lvl == 0 then return end
+  dumpsections(out, lvl)
+  dumpdefines(out, lvl)
+  if g_arch then g_arch.dumpdef(out, lvl) end
+  dumpmacros(out, lvl)
+  dumpcaptures(out, lvl)
+end
+
+------------------------------------------------------------------------------
+
+-- Helper for splitstmt.
+local splitlvl
+
+local function splitstmt_one(c)
+  if c == "(" then
+    splitlvl = ")"..splitlvl
+  elseif c == "[" then
+    splitlvl = "]"..splitlvl
+  elseif c == "{" then
+    splitlvl = "}"..splitlvl
+  elseif c == ")" or c == "]" or c == "}" then
+    if sub(splitlvl, 1, 1) ~= c then werror("unbalanced (), [] or {}") end
+    splitlvl = sub(splitlvl, 2)
+  elseif splitlvl == "" then
+    return " \0 "
+  end
+  return c
+end
+
+-- Split statement into (pseudo-)opcode and params.
+local function splitstmt(stmt)
+  -- Convert label with trailing-colon into .label statement.
+  local label = match(stmt, "^%s*(.+):%s*$")
+  if label then return ".label", {label} end
+
+  -- Split at commas and equal signs, but obey parentheses and brackets.
+  splitlvl = ""
+  stmt = gsub(stmt, "[,%(%)%[%]{}]", splitstmt_one)
+  if splitlvl ~= "" then werror("unbalanced () or []") end
+
+  -- Split off opcode.
+  local op, other = match(stmt, "^%s*([^%s%z]+)%s*(.*)$")
+  if not op then werror("bad statement syntax") end
+
+  -- Split parameters.
+  local params = {}
+  for p in gmatch(other, "%s*(%Z+)%z?") do
+    params[#params+1] = gsub(p, "%s+$", "")
+  end
+  if #params > 16 then werror("too many parameters") end
+
+  params.op = op
+  return op, params
+end
+
+-- Process a single statement.
+dostmt = function(stmt)
+  -- Ignore empty statements.
+  if match(stmt, "^%s*$") then return end
+
+  -- Capture macro defs before substitution.
+  if mac_capture then return mac_capture(stmt) end
+  stmt = definesubst(stmt)
+
+  -- Emit C code without parsing the line.
+  if sub(stmt, 1, 1) == "|" then
+    local tail = sub(stmt, 2)
+    wflush()
+    if sub(tail, 1, 2) == "//" then wcomment(tail) else wline(tail, true) end
+    return
+  end
+
+  -- Split into (pseudo-)opcode and params.
+  local op, params = splitstmt(stmt)
+
+  -- Get opcode handler (matching # of parameters or generic handler).
+  local f = map_op[op.."_"..#params] or map_op[op.."_*"]
+  if not f then
+    if not g_arch then wfatal("first statement must be .arch") end
+    -- Improve error report.
+    for i=0,9 do
+      if map_op[op.."_"..i] then
+	werror("wrong number of parameters for `"..op.."'")
+      end
+    end
+    werror("unknown statement `"..op.."'")
+  end
+
+  -- Call opcode handler or special handler for template strings.
+  if type(f) == "string" then
+    map_op[".template__"](params, f)
+  else
+    f(params)
+  end
+end
+
+-- Process a single line.
+local function doline(line)
+  if g_opt.flushline then wflush() end
+
+  -- Assembler line?
+  local indent, aline = match(line, "^(%s*)%//|(.*)$")
+  if not aline then
+    -- No, plain C code line, need to flush first.
+    wflush()
+    wsync()
+    wline(line, false)
+    return
+  end
+
+  g_indent = indent -- Remember current line indentation.
+
+  -- Emit C code (even from macros). Avoids echo and line parsing.
+  if sub(aline, 1, 1) == "|" then
+    if not mac_capture then
+      wsync()
+    elseif g_opt.comment then
+      wsync()
+      wcomment(aline)
+    end
+    dostmt(aline)
+    return
+  end
+
+  -- Echo assembler line as a comment.
+  if g_opt.comment then
+    wsync()
+    wcomment(aline)
+  end
+
+  -- Strip assembler comments.
+  aline = gsub(aline, "//.*$", "")
+
+  -- Split line into statements at semicolons.
+  if match(aline, ";") then
+    for stmt in gmatch(aline, "[^;]+") do dostmt(stmt) end
+  else
+    dostmt(aline)
+  end
+end
+
+------------------------------------------------------------------------------
+
+-- Write DynASM header.
+local function dasmhead(out)
+  out:write(format([[
+/*
+** This file has been pre-processed with DynASM.
+** %s
+** DynASM version %s, DynASM %s version %s
+** DO NOT EDIT! The original file is in "%s".
+*/
+
+]], _info.url,
+    _info.version, g_arch._info.arch, g_arch._info.version,
+    g_fname))
+end
+
+-- Read input file.
+readfile = function(fin)
+  g_indent = ""
+  g_lineno = 0
+  g_synclineno = -1
+
+  -- Process all lines.
+  for line in fin:lines() do
+    g_lineno = g_lineno + 1
+    g_curline = line
+    local ok, err = pcall(doline, line)
+    if not ok and wprinterr(err, "\n") then return true end
+  end
+  wflush()
+
+  -- Close input file.
+  assert(fin == stdin or fin:close())
+end
+
+-- Write output file.
+local function writefile(outfile)
+  local fout
+
+  -- Open output file.
+  if outfile == nil or outfile == "-" then
+    fout = stdout
+  else
+    fout = assert(io.open(outfile, "w"))
+  end
+
+  -- Write all buffered lines
+  wdumplines(fout, g_wbuffer)
+
+  -- Close output file.
+  assert(fout == stdout or fout:close())
+
+  -- Optionally dump definitions.
+  dumpdef(fout == stdout and stderr or stdout)
+end
+
+-- Translate an input file to an output file.
+local function translate(infile, outfile)
+  g_wbuffer = {}
+  g_indent = ""
+  g_lineno = 0
+  g_synclineno = -1
+
+  -- Put header.
+  wline(dasmhead)
+
+  -- Read input file.
+  local fin
+  if infile == "-" then
+    g_fname = "(stdin)"
+    fin = stdin
+  else
+    g_fname = infile
+    fin = assert(io.open(infile, "r"))
+  end
+  readfile(fin)
+
+  -- Check for errors.
+  if not g_arch then
+    wprinterr(g_fname, ":*: error: missing .arch directive\n")
+  end
+  checkconds()
+  checkmacros()
+  checkcaptures()
+
+  if g_errcount ~= 0 then
+    stderr:write(g_fname, ":*: info: ", g_errcount, " error",
+      (type(g_errcount) == "number" and g_errcount > 1) and "s" or "",
+      " in input file -- no output file generated.\n")
+    dumpdef(stderr)
+    exit(1)
+  end
+
+  -- Write output file.
+  writefile(outfile)
+end
+
+------------------------------------------------------------------------------
+
+-- Print help text.
+function opt_map.help()
+  stdout:write("DynASM -- ", _info.description, ".\n")
+  stdout:write("DynASM ", _info.version, " ", _info.release, "  ", _info.url, "\n")
+  stdout:write[[
+
+Usage: dynasm [OPTION]... INFILE.dasc|-
+
+  -h, --help           Display this help text.
+  -V, --version        Display version and copyright information.
+
+  -o, --outfile FILE   Output file name (default is stdout).
+  -I, --include DIR    Add directory to the include search path.
+
+  -c, --ccomment       Use /* */ comments for assembler lines.
+  -C, --cppcomment     Use // comments for assembler lines (default).
+  -N, --nocomment      Suppress assembler lines in output.
+  -M, --maccomment     Show macro expansions as comments (default off).
+
+  -L, --nolineno       Suppress CPP line number information in output.
+  -F, --flushline      Flush action list for every line.
+
+  -D NAME[=SUBST]      Define a substitution.
+  -U NAME              Undefine a substitution.
+
+  -P, --dumpdef        Dump defines, macros, etc. Repeat for more output.
+  -A, --dumparch ARCH  Load architecture ARCH and dump description.
+]]
+  exit(0)
+end
+
+-- Print version information.
+function opt_map.version()
+  stdout:write(format("%s version %s, released %s\n%s\n\n%s",
+    _info.name, _info.version, _info.release, _info.url, _info.copyright))
+  exit(0)
+end
+
+-- Misc. options.
+function opt_map.outfile(args) g_opt.outfile = optparam(args) end
+function opt_map.include(args) insert(g_opt.include, 1, optparam(args)) end
+function opt_map.ccomment() g_opt.comment = "/*|"; g_opt.endcomment = " */" end
+function opt_map.cppcomment() g_opt.comment = "//|"; g_opt.endcomment = "" end
+function opt_map.nocomment() g_opt.comment = false end
+function opt_map.maccomment() g_opt.maccomment = true end
+function opt_map.nolineno() g_opt.cpp = false end
+function opt_map.flushline() g_opt.flushline = true end
+function opt_map.dumpdef() g_opt.dumpdef = g_opt.dumpdef + 1 end
+
+------------------------------------------------------------------------------
+
+-- Short aliases for long options.
+local opt_alias = {
+  h = "help", ["?"] = "help", V = "version",
+  o = "outfile", I = "include",
+  c = "ccomment", C = "cppcomment", N = "nocomment", M = "maccomment",
+  L = "nolineno", F = "flushline",
+  P = "dumpdef", A = "dumparch",
+}
+
+-- Parse single option.
+local function parseopt(opt, args)
+  opt_current = #opt == 1 and "-"..opt or "--"..opt
+  local f = opt_map[opt] or opt_map[opt_alias[opt]]
+  if not f then
+    opterror("unrecognized option `", opt_current, "'. Try `--help'.\n")
+  end
+  f(args)
+end
+
+-- Parse arguments.
+local function parseargs(args)
+  -- Default options.
+  g_opt.comment = "//|"
+  g_opt.endcomment = ""
+  g_opt.cpp = true
+  g_opt.dumpdef = 0
+  g_opt.include = { "" }
+
+  -- Process all option arguments.
+  args.argn = 1
+  repeat
+    local a = args[args.argn]
+    if not a then break end
+    local lopt, opt = match(a, "^%-(%-?)(.+)")
+    if not opt then break end
+    args.argn = args.argn + 1
+    if lopt == "" then
+      -- Loop through short options.
+      for o in gmatch(opt, ".") do parseopt(o, args) end
+    else
+      -- Long option.
+      parseopt(opt, args)
+    end
+  until false
+
+  -- Check for proper number of arguments.
+  local nargs = #args - args.argn + 1
+  if nargs ~= 1 then
+    if nargs == 0 then
+      if g_opt.dumpdef > 0 then return dumpdef(stdout) end
+    end
+    opt_map.help()
+  end
+
+  -- Translate a single input file to a single output file
+  -- TODO: Handle multiple files?
+  translate(args[args.argn], g_opt.outfile)
+end
+
+------------------------------------------------------------------------------
+
+-- Add the directory dynasm.lua resides in to the Lua module search path.
+local arg = arg
+if arg and arg[0] then
+  prefix = match(arg[0], "^(.*[/\\])")
+  if package and prefix then package.path = prefix.."?.lua;"..package.path end
+end
+
+-- Start DynASM.
+parseargs{...}
+
+------------------------------------------------------------------------------
+

dynasm/minilua.c

+/* This is a heavily customized and minimized copy of Lua 5.1.5. */
+/* It's only used to build LuaJIT. It does NOT have all standard functions! */
+/******************************************************************************
+* Copyright (C) 1994-2012 Lua.org, PUC-Rio.  All rights reserved.
+*
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to deal in the Software without restriction, including
+* without limitation the rights to use, copy, modify, merge, publish,
+* distribute, sublicense, and/or sell copies of the Software, and to
+* permit persons to whom the Software is furnished to do so, subject to
+* the following conditions:
+*
+* The above copyright notice and this permission notice shall be
+* included in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+******************************************************************************/
+#ifdef _MSC_VER
+typedef unsigned __int64 U64;
+#else
+typedef unsigned long long U64;
+#endif
+int _CRT_glob = 0;
+#include <stddef.h>
+#include <stdarg.h>
+#include <limits.h>
+#include <math.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <setjmp.h>
+#include <errno.h>
+#include <time.h>
+typedef enum{
+TM_INDEX,
+TM_NEWINDEX,
+TM_GC,
+TM_MODE,
+TM_EQ,
+TM_ADD,
+TM_SUB,
+TM_MUL,
+TM_DIV,
+TM_MOD,
+TM_POW,
+TM_UNM,
+TM_LEN,
+TM_LT,
+TM_LE,
+TM_CONCAT,
+TM_CALL,
+TM_N
+}TMS;
+enum OpMode{iABC,iABx,iAsBx};
+typedef enum{
+OP_MOVE,
+OP_LOADK,
+OP_LOADBOOL,
+OP_LOADNIL,
+OP_GETUPVAL,
+OP_GETGLOBAL,
+OP_GETTABLE,
+OP_SETGLOBAL,
+OP_SETUPVAL,
+OP_SETTABLE,
+OP_NEWTABLE,
+OP_SELF,
+OP_ADD,
+OP_SUB,
+OP_MUL,
+OP_DIV,
+OP_MOD,
+OP_POW,
+OP_UNM,
+OP_NOT,
+OP_LEN,
+OP_CONCAT,
+OP_JMP,
+OP_EQ,
+OP_LT,
+OP_LE,
+OP_TEST,
+OP_TESTSET,
+OP_CALL,
+OP_TAILCALL,
+OP_RETURN,
+OP_FORLOOP,
+OP_FORPREP,
+OP_TFORLOOP,
+OP_SETLIST,
+OP_CLOSE,
+OP_CLOSURE,
+OP_VARARG
+}OpCode;
+enum OpArgMask{
+OpArgN,
+OpArgU,
+OpArgR,
+OpArgK
+};
+typedef enum{
+VVOID,
+VNIL,
+VTRUE,
+VFALSE,
+VK,
+VKNUM,
+VLOCAL,
+VUPVAL,
+VGLOBAL,
+VINDEXED,
+VJMP,
+VRELOCABLE,
+VNONRELOC,
+VCALL,
+VVARARG
+}expkind;
+enum RESERVED{
+TK_AND=257,TK_BREAK,
+TK_DO,TK_ELSE,TK_ELSEIF,TK_END,TK_FALSE,TK_FOR,TK_FUNCTION,
+TK_IF,TK_IN,TK_LOCAL,TK_NIL,TK_NOT,TK_OR,TK_REPEAT,
+TK_RETURN,TK_THEN,TK_TRUE,TK_UNTIL,TK_WHILE,
+TK_CONCAT,TK_DOTS,TK_EQ,TK_GE,TK_LE,TK_NE,TK_NUMBER,
+TK_NAME,TK_STRING,TK_EOS
+};
+typedef enum BinOpr{
+OPR_ADD,OPR_SUB,OPR_MUL,OPR_DIV,OPR_MOD,OPR_POW,
+OPR_CONCAT,
+OPR_NE,OPR_EQ,
+OPR_LT,OPR_LE,OPR_GT,OPR_GE,
+OPR_AND,OPR_OR,
+OPR_NOBINOPR
+}BinOpr;
+typedef enum UnOpr{OPR_MINUS,OPR_NOT,OPR_LEN,OPR_NOUNOPR}UnOpr;
+#define LUA_QL(x)"'"x"'"
+#define luai_apicheck(L,o){(void)L;}
+#define lua_number2str(s,n)sprintf((s),"%.14g",(n))
+#define lua_str2number(s,p)strtod((s),(p))
+#define luai_numadd(a,b)((a)+(b))
+#define luai_numsub(a,b)((a)-(b))
+#define luai_nummul(a,b)((a)*(b))
+#define luai_numdiv(a,b)((a)/(b))
+#define luai_nummod(a,b)((a)-floor((a)/(b))*(b))
+#define luai_numpow(a,b)(pow(a,b))
+#define luai_numunm(a)(-(a))
+#define luai_numeq(a,b)((a)==(b))
+#define luai_numlt(a,b)((a)<(b))
+#define luai_numle(a,b)((a)<=(b))
+#define luai_numisnan(a)(!luai_numeq((a),(a)))
+#define lua_number2int(i,d)((i)=(int)(d))
+#define lua_number2integer(i,d)((i)=(lua_Integer)(d))
+#define LUAI_THROW(L,c)longjmp((c)->b,1)
+#define LUAI_TRY(L,c,a)if(setjmp((c)->b)==0){a}
+#define lua_pclose(L,file)((void)((void)L,file),0)
+#define lua_upvalueindex(i)((-10002)-(i))
+typedef struct lua_State lua_State;
+typedef int(*lua_CFunction)(lua_State*L);
+typedef const char*(*lua_Reader)(lua_State*L,void*ud,size_t*sz);
+typedef void*(*lua_Alloc)(void*ud,void*ptr,size_t osize,size_t nsize);
+typedef double lua_Number;
+typedef ptrdiff_t lua_Integer;
+static void lua_settop(lua_State*L,int idx);
+static int lua_type(lua_State*L,int idx);
+static const char* lua_tolstring(lua_State*L,int idx,size_t*len);
+static size_t lua_objlen(lua_State*L,int idx);
+static void lua_pushlstring(lua_State*L,const char*s,size_t l);
+static void lua_pushcclosure(lua_State*L,lua_CFunction fn,int n);
+static void lua_createtable(lua_State*L,int narr,int nrec);
+static void lua_setfield(lua_State*L,int idx,const char*k);
+#define lua_pop(L,n)lua_settop(L,-(n)-1)
+#define lua_newtable(L)lua_createtable(L,0,0)
+#define lua_pushcfunction(L,f)lua_pushcclosure(L,(f),0)
+#define lua_strlen(L,i)lua_objlen(L,(i))
+#define lua_isfunction(L,n)(lua_type(L,(n))==6)
+#define lua_istable(L,n)(lua_type(L,(n))==5)
+#define lua_isnil(L,n)(lua_type(L,(n))==0)
+#define lua_isboolean(L,n)(lua_type(L,(n))==1)
+#define lua_isnone(L,n)(lua_type(L,(n))==(-1))
+#define lua_isnoneornil(L,n)(lua_type(L,(n))<=0)
+#define lua_pushliteral(L,s)lua_pushlstring(L,""s,(sizeof(s)/sizeof(char))-1)
+#define lua_setglobal(L,s)lua_setfield(L,(-10002),(s))
+#define lua_tostring(L,i)lua_tolstring(L,(i),NULL)
+typedef struct lua_Debug lua_Debug;
+typedef void(*lua_Hook)(lua_State*L,lua_Debug*ar);
+struct lua_Debug{
+int event;
+const char*name;
+const char*namewhat;
+const char*what;
+const char*source;
+int currentline;
+int nups;
+int linedefined;
+int lastlinedefined;
+char short_src[60];
+int i_ci;
+};
+typedef unsigned int lu_int32;
+typedef size_t lu_mem;
+typedef ptrdiff_t l_mem;
+typedef unsigned char lu_byte;
+#define IntPoint(p)((unsigned int)(lu_mem)(p))
+typedef union{double u;void*s;long l;}L_Umaxalign;
+typedef double l_uacNumber;
+#define check_exp(c,e)(e)
+#define UNUSED(x)((void)(x))
+#define cast(t,exp)((t)(exp))
+#define cast_byte(i)cast(lu_byte,(i))
+#define cast_num(i)cast(lua_Number,(i))
+#define cast_int(i)cast(int,(i))
+typedef lu_int32 Instruction;
+#define condhardstacktests(x)((void)0)
+typedef union GCObject GCObject;
+typedef struct GCheader{
+GCObject*next;lu_byte tt;lu_byte marked;
+}GCheader;
+typedef union{
+GCObject*gc;
+void*p;
+lua_Number n;
+int b;
+}Value;
+typedef struct lua_TValue{
+Value value;int tt;
+}TValue;
+#define ttisnil(o)(ttype(o)==0)
+#define ttisnumber(o)(ttype(o)==3)
+#define ttisstring(o)(ttype(o)==4)
+#define ttistable(o)(ttype(o)==5)
+#define ttisfunction(o)(ttype(o)==6)
+#define ttisboolean(o)(ttype(o)==1)
+#define ttisuserdata(o)(ttype(o)==7)
+#define ttisthread(o)(ttype(o)==8)
+#define ttislightuserdata(o)(ttype(o)==2)
+#define ttype(o)((o)->tt)
+#define gcvalue(o)check_exp(iscollectable(o),(o)->value.gc)
+#define pvalue(o)check_exp(ttislightuserdata(o),(o)->value.p)
+#define nvalue(o)check_exp(ttisnumber(o),(o)->value.n)
+#define rawtsvalue(o)check_exp(ttisstring(o),&(o)->value.gc->ts)
+#define tsvalue(o)(&rawtsvalue(o)->tsv)
+#define rawuvalue(o)check_exp(ttisuserdata(o),&(o)->value.gc->u)
+#define uvalue(o)(&rawuvalue(o)->uv)
+#define clvalue(o)check_exp(ttisfunction(o),&(o)->value.gc->cl)
+#define hvalue(o)check_exp(ttistable(o),&(o)->value.gc->h)
+#define bvalue(o)check_exp(ttisboolean(o),(o)->value.b)
+#define thvalue(o)check_exp(ttisthread(o),&(o)->value.gc->th)
+#define l_isfalse(o)(ttisnil(o)||(ttisboolean(o)&&bvalue(o)==0))
+#define checkconsistency(obj)
+#define checkliveness(g,obj)
+#define setnilvalue(obj)((obj)->tt=0)
+#define setnvalue(obj,x){TValue*i_o=(obj);i_o->value.n=(x);i_o->tt=3;}
+#define setbvalue(obj,x){TValue*i_o=(obj);i_o->value.b=(x);i_o->tt=1;}
+#define setsvalue(L,obj,x){TValue*i_o=(obj);i_o->value.gc=cast(GCObject*,(x));i_o->tt=4;checkliveness(G(L),i_o);}
+#define setuvalue(L,obj,x){TValue*i_o=(obj);i_o->value.gc=cast(GCObject*,(x));i_o->tt=7;checkliveness(G(L),i_o);}
+#define setthvalue(L,obj,x){TValue*i_o=(obj);i_o->value.gc=cast(GCObject*,(x));i_o->tt=8;checkliveness(G(L),i_o);}
+#define setclvalue(L,obj,x){TValue*i_o=(obj);i_o->value.gc=cast(GCObject*,(x));i_o->tt=6;checkliveness(G(L),i_o);}
+#define sethvalue(L,obj,x){TValue*i_o=(obj);i_o->value.gc=cast(GCObject*,(x));i_o->tt=5;checkliveness(G(L),i_o);}
+#define setptvalue(L,obj,x){TValue*i_o=(obj);i_o->value.gc=cast(GCObject*,(x));i_o->tt=(8+1);checkliveness(G(L),i_o);}
+#define setobj(L,obj1,obj2){const TValue*o2=(obj2);TValue*o1=(obj1);o1->value=o2->value;o1->tt=o2->tt;checkliveness(G(L),o1);}
+#define setttype(obj,tt)(ttype(obj)=(tt))
+#define iscollectable(o)(ttype(o)>=4)
+typedef TValue*StkId;
+typedef union TString{
+L_Umaxalign dummy;
+struct{
+GCObject*next;lu_byte tt;lu_byte marked;
+lu_byte reserved;
+unsigned int hash;
+size_t len;
+}tsv;
+}TString;
+#define getstr(ts)cast(const char*,(ts)+1)
+#define svalue(o)getstr(rawtsvalue(o))
+typedef union Udata{
+L_Umaxalign dummy;
+struct{
+GCObject*next;lu_byte tt;lu_byte marked;
+struct Table*metatable;
+struct Table*env;
+size_t len;
+}uv;
+}Udata;
+typedef struct Proto{
+GCObject*next;lu_byte tt;lu_byte marked;
+TValue*k;
+Instruction*code;
+struct Proto**p;
+int*lineinfo;
+struct LocVar*locvars;
+TString**upvalues;
+TString*source;
+int sizeupvalues;
+int sizek;
+int sizecode;
+int sizelineinfo;
+int sizep;
+int sizelocvars;
+int linedefined;
+int lastlinedefined;
+GCObject*gclist;
+lu_byte nups;
+lu_byte numparams;
+lu_byte is_vararg;
+lu_byte maxstacksize;
+}Proto;
+typedef struct LocVar{
+TString*varname;
+int startpc;
+int endpc;
+}LocVar;
+typedef struct UpVal{
+GCObject*next;lu_byte tt;lu_byte marked;
+TValue*v;
+union{
+TValue value;
+struct{
+struct UpVal*prev;
+struct UpVal*next;
+}l;
+}u;
+}UpVal;
+typedef struct CClosure{
+GCObject*next;lu_byte tt;lu_byte marked;lu_byte isC;lu_byte nupvalues;GCObject*gclist;struct Table*env;
+lua_CFunction f;
+TValue upvalue[1];
+}CClosure;
+typedef struct LClosure{
+GCObject*next;lu_byte tt;lu_byte marked;lu_byte isC;lu_byte nupvalues;GCObject*gclist;struct Table*env;
+struct Proto*p;
+UpVal*upvals[1];
+}LClosure;
+typedef union Closure{
+CClosure c;
+LClosure l;
+}Closure;
+#define iscfunction(o)(ttype(o)==6&&clvalue(o)->c.isC)
+typedef union TKey{
+struct{
+Value value;int tt;
+struct Node*next;
+}nk;
+TValue tvk;
+}TKey;
+typedef struct Node{
+TValue i_val;
+TKey i_key;
+}Node;
+typedef struct Table{
+GCObject*next;lu_byte tt;lu_byte marked;
+lu_byte flags;
+lu_byte lsizenode;
+struct Table*metatable;
+TValue*array;
+Node*node;
+Node*lastfree;
+GCObject*gclist;
+int sizearray;
+}Table;
+#define lmod(s,size)(check_exp((size&(size-1))==0,(cast(int,(s)&((size)-1)))))
+#define twoto(x)((size_t)1<<(x))
+#define sizenode(t)(twoto((t)->lsizenode))
+static const TValue luaO_nilobject_;
+#define ceillog2(x)(luaO_log2((x)-1)+1)
+static int luaO_log2(unsigned int x);
+#define gfasttm(g,et,e)((et)==NULL?NULL:((et)->flags&(1u<<(e)))?NULL:luaT_gettm(et,e,(g)->tmname[e]))
+#define fasttm(l,et,e)gfasttm(G(l),et,e)
+static const TValue*luaT_gettm(Table*events,TMS event,TString*ename);
+#define luaM_reallocv(L,b,on,n,e)((cast(size_t,(n)+1)<=((size_t)(~(size_t)0)-2)/(e))?luaM_realloc_(L,(b),(on)*(e),(n)*(e)):luaM_toobig(L))
+#define luaM_freemem(L,b,s)luaM_realloc_(L,(b),(s),0)
+#define luaM_free(L,b)luaM_realloc_(L,(b),sizeof(*(b)),0)
+#define luaM_freearray(L,b,n,t)luaM_reallocv(L,(b),n,0,sizeof(t))
+#define luaM_malloc(L,t)luaM_realloc_(L,NULL,0,(t))
+#define luaM_new(L,t)cast(t*,luaM_malloc(L,sizeof(t)))
+#define luaM_newvector(L,n,t)cast(t*,luaM_reallocv(L,NULL,0,n,sizeof(t)))
+#define luaM_growvector(L,v,nelems,size,t,limit,e)if((nelems)+1>(size))((v)=cast(t*,luaM_growaux_(L,v,&(size),sizeof(t),limit,e)))
+#define luaM_reallocvector(L,v,oldn,n,t)((v)=cast(t*,luaM_reallocv(L,v,oldn,n,sizeof(t))))
+static void*luaM_realloc_(lua_State*L,void*block,size_t oldsize,
+size_t size);
+static void*luaM_toobig(lua_State*L);
+static void*luaM_growaux_(lua_State*L,void*block,int*size,
+size_t size_elem,int limit,
+const char*errormsg);
+typedef struct Zio ZIO;
+#define char2int(c)cast(int,cast(unsigned char,(c)))
+#define zgetc(z)(((z)->n--)>0?char2int(*(z)->p++):luaZ_fill(z))
+typedef struct Mbuffer{
+char*buffer;
+size_t n;
+size_t buffsize;
+}Mbuffer;
+#define luaZ_initbuffer(L,buff)((buff)->buffer=NULL,(buff)->buffsize=0)
+#define luaZ_buffer(buff)((buff)->buffer)
+#define luaZ_sizebuffer(buff)((buff)->buffsize)
+#define luaZ_bufflen(buff)((buff)->n)
+#define luaZ_resetbuffer(buff)((buff)->n=0)
+#define luaZ_resizebuffer(L,buff,size)(luaM_reallocvector(L,(buff)->buffer,(buff)->buffsize,size,char),(buff)->buffsize=size)
+#define luaZ_freebuffer(L,buff)luaZ_resizebuffer(L,buff,0)
+struct Zio{
+size_t n;
+const char*p;
+lua_Reader reader;
+void*data;
+lua_State*L;
+};
+static int luaZ_fill(ZIO*z);
+struct lua_longjmp;
+#define gt(L)(&L->l_gt)
+#define registry(L)(&G(L)->l_registry)
+typedef struct stringtable{
+GCObject**hash;
+lu_int32 nuse;
+int size;
+}stringtable;
+typedef struct CallInfo{
+StkId base;
+StkId func;
+StkId top;
+const Instruction*savedpc;
+int nresults;
+int tailcalls;
+}CallInfo;
+#define curr_func(L)(clvalue(L->ci->func))
+#define ci_func(ci)(clvalue((ci)->func))
+#define f_isLua(ci)(!ci_func(ci)->c.isC)
+#define isLua(ci)(ttisfunction((ci)->func)&&f_isLua(ci))
+typedef struct global_State{
+stringtable strt;
+lua_Alloc frealloc;
+void*ud;
+lu_byte currentwhite;
+lu_byte gcstate;
+int sweepstrgc;
+GCObject*rootgc;
+GCObject**sweepgc;
+GCObject*gray;
+GCObject*grayagain;
+GCObject*weak;
+GCObject*tmudata;
+Mbuffer buff;
+lu_mem GCthreshold;
+lu_mem totalbytes;
+lu_mem estimate;
+lu_mem gcdept;
+int gcpause;
+int gcstepmul;
+lua_CFunction panic;
+TValue l_registry;
+struct lua_State*mainthread;
+UpVal uvhead;
+struct Table*mt[(8+1)];
+TString*tmname[TM_N];
+}global_State;
+struct lua_State{
+GCObject*next;lu_byte tt;lu_byte marked;
+lu_byte status;
+StkId top;
+StkId base;
+global_State*l_G;
+CallInfo*ci;
+const Instruction*savedpc;
+StkId stack_last;
+StkId stack;
+CallInfo*end_ci;
+CallInfo*base_ci;
+int stacksize;
+int size_ci;
+unsigned short nCcalls;
+unsigned short baseCcalls;
+lu_byte hookmask;
+lu_byte allowhook;
+int basehookcount;
+int hookcount;
+lua_Hook hook;
+TValue l_gt;
+TValue env;
+GCObject*openupval;
+GCObject*gclist;
+struct lua_longjmp*errorJmp;
+ptrdiff_t errfunc;
+};
+#define G(L)(L->l_G)
+union GCObject{
+GCheader gch;
+union TString ts;
+union Udata u;
+union Closure cl;
+struct Table h;
+struct Proto p;
+struct UpVal uv;
+struct lua_State th;
+};
+#define rawgco2ts(o)check_exp((o)->gch.tt==4,&((o)->ts))
+#define gco2ts(o)(&rawgco2ts(o)->tsv)
+#define rawgco2u(o)check_exp((o)->gch.tt==7,&((o)->u))
+#define gco2u(o)(&rawgco2u(o)->uv)
+#define gco2cl(o)check_exp((o)->gch.tt==6,&((o)->cl))
+#define gco2h(o)check_exp((o)->gch.tt==5,&((o)->h))
+#define gco2p(o)check_exp((o)->gch.tt==(8+1),&((o)->p))
+#define gco2uv(o)check_exp((o)->gch.tt==(8+2),&((o)->uv))
+#define ngcotouv(o)check_exp((o)==NULL||(o)->gch.tt==(8+2),&((o)->uv))
+#define gco2th(o)check_exp((o)->gch.tt==8,&((o)->th))
+#define obj2gco(v)(cast(GCObject*,(v)))
+static void luaE_freethread(lua_State*L,lua_State*L1);
+#define pcRel(pc,p)(cast(int,(pc)-(p)->code)-1)
+#define getline_(f,pc)(((f)->lineinfo)?(f)->lineinfo[pc]:0)
+#define resethookcount(L)(L->hookcount=L->basehookcount)
+static void luaG_typeerror(lua_State*L,const TValue*o,
+const char*opname);
+static void luaG_runerror(lua_State*L,const char*fmt,...);
+#define luaD_checkstack(L,n)if((char*)L->stack_last-(char*)L->top<=(n)*(int)sizeof(TValue))luaD_growstack(L,n);else condhardstacktests(luaD_reallocstack(L,L->stacksize-5-1));
+#define incr_top(L){luaD_checkstack(L,1);L->top++;}
+#define savestack(L,p)((char*)(p)-(char*)L->stack)
+#define restorestack(L,n)((TValue*)((char*)L->stack+(n)))
+#define saveci(L,p)((char*)(p)-(char*)L->base_ci)
+#define restoreci(L,n)((CallInfo*)((char*)L->base_ci+(n)))
+typedef void(*Pfunc)(lua_State*L,void*ud);
+static int luaD_poscall(lua_State*L,StkId firstResult);
+static void luaD_reallocCI(lua_State*L,int newsize);
+static void luaD_reallocstack(lua_State*L,int newsize);
+static void luaD_growstack(lua_State*L,int n);
+static void luaD_throw(lua_State*L,int errcode);
+static void*luaM_growaux_(lua_State*L,void*block,int*size,size_t size_elems,
+int limit,const char*errormsg){
+void*newblock;
+int newsize;
+if(*size>=limit/2){
+if(*size>=limit)
+luaG_runerror(L,errormsg);
+newsize=limit;
+}
+else{
+newsize=(*size)*2;
+if(newsize<4)
+newsize=4;
+}
+newblock=luaM_reallocv(L,block,*size,newsize,size_elems);
+*size=newsize;
+return newblock;
+}
+static void*luaM_toobig(lua_State*L){
+luaG_runerror(L,"memory allocation error: block too big");
+return NULL;
+}
+static void*luaM_realloc_(lua_State*L,void*block,size_t osize,size_t nsize){
+global_State*g=G(L);
+block=(*g->frealloc)(g->ud,block,osize,nsize);
+if(block==NULL&&nsize>0)
+luaD_throw(L,4);
+g->totalbytes=(g->totalbytes-osize)+nsize;
+return block;
+}
+#define resetbits(x,m)((x)&=cast(lu_byte,~(m)))
+#define setbits(x,m)((x)|=(m))
+#define testbits(x,m)((x)&(m))
+#define bitmask(b)(1<<(b))
+#define bit2mask(b1,b2)(bitmask(b1)|bitmask(b2))
+#define l_setbit(x,b)setbits(x,bitmask(b))
+#define resetbit(x,b)resetbits(x,bitmask(b))
+#define testbit(x,b)testbits(x,bitmask(b))
+#define set2bits(x,b1,b2)setbits(x,(bit2mask(b1,b2)))
+#define reset2bits(x,b1,b2)resetbits(x,(bit2mask(b1,b2)))
+#define test2bits(x,b1,b2)testbits(x,(bit2mask(b1,b2)))
+#define iswhite(x)test2bits((x)->gch.marked,0,1)
+#define isblack(x)testbit((x)->gch.marked,2)
+#define isgray(x)(!isblack(x)&&!iswhite(x))
+#define otherwhite(g)(g->currentwhite^bit2mask(0,1))
+#define isdead(g,v)((v)->gch.marked&otherwhite(g)&bit2mask(0,1))
+#define changewhite(x)((x)->gch.marked^=bit2mask(0,1))
+#define gray2black(x)l_setbit((x)->gch.marked,2)
+#define valiswhite(x)(iscollectable(x)&&iswhite(gcvalue(x)))
+#define luaC_white(g)cast(lu_byte,(g)->currentwhite&bit2mask(0,1))
+#define luaC_checkGC(L){condhardstacktests(luaD_reallocstack(L,L->stacksize-5-1));if(G(L)->totalbytes>=G(L)->GCthreshold)luaC_step(L);}
+#define luaC_barrier(L,p,v){if(valiswhite(v)&&isblack(obj2gco(p)))luaC_barrierf(L,obj2gco(p),gcvalue(v));}
+#define luaC_barriert(L,t,v){if(valiswhite(v)&&isblack(obj2gco(t)))luaC_barrierback(L,t);}
+#define luaC_objbarrier(L,p,o){if(iswhite(obj2gco(o))&&isblack(obj2gco(p)))luaC_barrierf(L,obj2gco(p),obj2gco(o));}
+#define luaC_objbarriert(L,t,o){if(iswhite(obj2gco(o))&&isblack(obj2gco(t)))luaC_barrierback(L,t);}
+static void luaC_step(lua_State*L);
+static void luaC_link(lua_State*L,GCObject*o,lu_byte tt);
+static void luaC_linkupval(lua_State*L,UpVal*uv);
+static void luaC_barrierf(lua_State*L,GCObject*o,GCObject*v);
+static void luaC_barrierback(lua_State*L,Table*t);
+#define sizestring(s)(sizeof(union TString)+((s)->len+1)*sizeof(char))
+#define sizeudata(u)(sizeof(union Udata)+(u)->len)
+#define luaS_new(L,s)(luaS_newlstr(L,s,strlen(s)))
+#define luaS_newliteral(L,s)(luaS_newlstr(L,""s,(sizeof(s)/sizeof(char))-1))
+#define luaS_fix(s)l_setbit((s)->tsv.marked,5)
+static TString*luaS_newlstr(lua_State*L,const char*str,size_t l);
+#define tostring(L,o)((ttype(o)==4)||(luaV_tostring(L,o)))
+#define tonumber(o,n)(ttype(o)==3||(((o)=luaV_tonumber(o,n))!=NULL))
+#define equalobj(L,o1,o2)(ttype(o1)==ttype(o2)&&luaV_equalval(L,o1,o2))
+static int luaV_equalval(lua_State*L,const TValue*t1,const TValue*t2);
+static const TValue*luaV_tonumber(const TValue*obj,TValue*n);
+static int luaV_tostring(lua_State*L,StkId obj);
+static void luaV_execute(lua_State*L,int nexeccalls);
+static void luaV_concat(lua_State*L,int total,int last);
+static const TValue luaO_nilobject_={{NULL},0};
+static int luaO_int2fb(unsigned int x){
+int e=0;
+while(x>=16){
+x=(x+1)>>1;
+e++;
+}
+if(x<8)return x;
+else return((e+1)<<3)|(cast_int(x)-8);
+}
+static int luaO_fb2int(int x){
+int e=(x>>3)&31;
+if(e==0)return x;
+else return((x&7)+8)<<(e-1);
+}
+static int luaO_log2(unsigned int x){
+static const lu_byte log_2[256]={
+0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
+6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
+};
+int l=-1;
+while(x>=256){l+=8;x>>=8;}
+return l+log_2[x];
+}
+static int luaO_rawequalObj(const TValue*t1,const TValue*t2){
+if(ttype(t1)!=ttype(t2))return 0;
+else switch(ttype(t1)){
+case 0:
+return 1;
+case 3:
+return luai_numeq(nvalue(t1),nvalue(t2));
+case 1:
+return bvalue(t1)==bvalue(t2);
+case 2:
+return pvalue(t1)==pvalue(t2);
+default:
+return gcvalue(t1)==gcvalue(t2);
+}
+}
+static int luaO_str2d(const char*s,lua_Number*result){
+char*endptr;
+*result=lua_str2number(s,&endptr);
+if(endptr==s)return 0;
+if(*endptr=='x'||*endptr=='X')
+*result=cast_num(strtoul(s,&endptr,16));
+if(*endptr=='\0')return 1;
+while(isspace(cast(unsigned char,*endptr)))endptr++;
+if(*endptr!='\0')return 0;
+return 1;
+}
+static void pushstr(lua_State*L,const char*str){
+setsvalue(L,L->top,luaS_new(L,str));
+incr_top(L);
+}
+static const char*luaO_pushvfstring(lua_State*L,const char*fmt,va_list argp){
+int n=1;
+pushstr(L,"");
+for(;;){
+const char*e=strchr(fmt,'%');
+if(e==NULL)break;
+setsvalue(L,L->top,luaS_newlstr(L,fmt,e-fmt));
+incr_top(L);
+switch(*(e+1)){
+case's':{
+const char*s=va_arg(argp,char*);
+if(s==NULL)s="(null)";
+pushstr(L,s);
+break;
+}
+case'c':{
+char buff[2];
+buff[0]=cast(char,va_arg(argp,int));
+buff[1]='\0';
+pushstr(L,buff);
+break;
+}
+case'd':{
+setnvalue(L->top,cast_num(va_arg(argp,int)));
+incr_top(L);
+break;
+}
+case'f':{
+setnvalue(L->top,cast_num(va_arg(argp,l_uacNumber)));
+incr_top(L);
+break;
+}
+case'p':{
+char buff[4*sizeof(void*)+8];
+sprintf(buff,"%p",va_arg(argp,void*));
+pushstr(L,buff);
+break;
+}
+case'%':{
+pushstr(L,"%");
+break;
+}
+default:{
+char buff[3];
+buff[0]='%';
+buff[1]=*(e+1);
+buff[2]='\0';
+pushstr(L,buff);
+break;
+}
+}
+n+=2;
+fmt=e+2;
+}
+pushstr(L,fmt);
+luaV_concat(L,n+1,cast_int(L->top-L->base)-1);
+L->top-=n;
+return svalue(L->top-1);
+}
+static const char*luaO_pushfstring(lua_State*L,const char*fmt,...){
+const char*msg;
+va_list argp;
+va_start(argp,fmt);
+msg=luaO_pushvfstring(L,fmt,argp);
+va_end(argp);
+return msg;
+}
+static void luaO_chunkid(char*out,const char*source,size_t bufflen){
+if(*source=='='){
+strncpy(out,source+1,bufflen);
+out[bufflen-1]='\0';
+}
+else{
+if(*source=='@'){
+size_t l;
+source++;
+bufflen-=sizeof(" '...' ");
+l=strlen(source);
+strcpy(out,"");
+if(l>bufflen){
+source+=(l-bufflen);
+strcat(out,"...");
+}
+strcat(out,source);
+}
+else{
+size_t len=strcspn(source,"\n\r");
+bufflen-=sizeof(" [string \"...\"] ");
+if(len>bufflen)len=bufflen;
+strcpy(out,"[string \"");
+if(source[len]!='\0'){
+strncat(out,source,len);
+strcat(out,"...");
+}
+else
+strcat(out,source);
+strcat(out,"\"]");
+}
+}
+}
+#define gnode(t,i)(&(t)->node[i])
+#define gkey(n)(&(n)->i_key.nk)
+#define gval(n)(&(n)->i_val)
+#define gnext(n)((n)->i_key.nk.next)
+#define key2tval(n)(&(n)->i_key.tvk)
+static TValue*luaH_setnum(lua_State*L,Table*t,int key);
+static const TValue*luaH_getstr(Table*t,TString*key);
+static TValue*luaH_set(lua_State*L,Table*t,const TValue*key);
+static const char*const luaT_typenames[]={
+"nil","boolean","userdata","number",
+"string","table","function","userdata","thread",
+"proto","upval"
+};
+static void luaT_init(lua_State*L){
+static const char*const luaT_eventname[]={
+"__index","__newindex",
+"__gc","__mode","__eq",
+"__add","__sub","__mul","__div","__mod",
+"__pow","__unm","__len","__lt","__le",
+"__concat","__call"
+};
+int i;
+for(i=0;i<TM_N;i++){
+G(L)->tmname[i]=luaS_new(L,luaT_eventname[i]);
+luaS_fix(G(L)->tmname[i]);
+}
+}
+static const TValue*luaT_gettm(Table*events,TMS event,TString*ename){
+const TValue*tm=luaH_getstr(events,ename);
+if(ttisnil(tm)){
+events->flags|=cast_byte(1u<<event);
+return NULL;
+}
+else return tm;
+}
+static const TValue*luaT_gettmbyobj(lua_State*L,const TValue*o,TMS event){
+Table*mt;
+switch(ttype(o)){
+case 5:
+mt=hvalue(o)->metatable;
+break;
+case 7:
+mt=uvalue(o)->metatable;
+break;
+default:
+mt=G(L)->mt[ttype(o)];
+}
+return(mt?luaH_getstr(mt,G(L)->tmname[event]):(&luaO_nilobject_));
+}
+#define sizeCclosure(n)(cast(int,sizeof(CClosure))+cast(int,sizeof(TValue)*((n)-1)))
+#define sizeLclosure(n)(cast(int,sizeof(LClosure))+cast(int,sizeof(TValue*)*((n)-1)))
+static Closure*luaF_newCclosure(lua_State*L,int nelems,Table*e){
+Closure*c=cast(Closure*,luaM_malloc(L,sizeCclosure(nelems)));
+luaC_link(L,obj2gco(c),6);
+c->c.isC=1;
+c->c.env=e;
+c->c.nupvalues=cast_byte(nelems);
+return c;
+}
+static Closure*luaF_newLclosure(lua_State*L,int nelems,Table*e){
+Closure*c=cast(Closure*,luaM_malloc(L,sizeLclosure(nelems)));
+luaC_link(L,obj2gco(c),6);
+c->l.isC=0;
+c->l.env=e;
+c->l.nupvalues=cast_byte(nelems);
+while(nelems--)c->l.upvals[nelems]=NULL;
+return c;
+}
+static UpVal*luaF_newupval(lua_State*L){
+UpVal*uv=luaM_new(L,UpVal);
+luaC_link(L,obj2gco(uv),(8+2));
+uv->v=&uv->u.value;
+setnilvalue(uv->v);
+return uv;
+}
+static UpVal*luaF_findupval(lua_State*L,StkId level){
+global_State*g=G(L);
+GCObject**pp=&L->openupval;
+UpVal*p;
+UpVal*uv;
+while(*pp!=NULL&&(p=ngcotouv(*pp))->v>=level){
+if(p->v==level){
+if(isdead(g,obj2gco(p)))
+changewhite(obj2gco(p));
+return p;
+}
+pp=&p->next;
+}
+uv=luaM_new(L,UpVal);
+uv->tt=(8+2);
+uv->marked=luaC_white(g);
+uv->v=level;
+uv->next=*pp;
+*pp=obj2gco(uv);
+uv->u.l.prev=&g->uvhead;
+uv->u.l.next=g->uvhead.u.l.next;
+uv->u.l.next->u.l.prev=uv;
+g->uvhead.u.l.next=uv;
+return uv;
+}
+static void unlinkupval(UpVal*uv){
+uv->u.l.next->u.l.prev=uv->u.l.prev;
+uv->u.l.prev->u.l.next=uv->u.l.next;
+}
+static void luaF_freeupval(lua_State*L,UpVal*uv){
+if(uv->v!=&uv->u.value)
+unlinkupval(uv);
+luaM_free(L,uv);
+}
+static void luaF_close(lua_State*L,StkId level){
+UpVal*uv;
+global_State*g=G(L);
+while(L->openupval!=NULL&&(uv=ngcotouv(L->openupval))->v>=level){
+GCObject*o=obj2gco(uv);
+L->openupval=uv->next;
+if(isdead(g,o))
+luaF_freeupval(L,uv);
+else{
+unlinkupval(uv);
+setobj(L,&uv->u.value,uv->v);
+uv->v=&uv->u.value;
+luaC_linkupval(L,uv);
+}
+}
+}
+static Proto*luaF_newproto(lua_State*L){
+Proto*f=luaM_new(L,Proto);
+luaC_link(L,obj2gco(f),(8+1));
+f->k=NULL;
+f->sizek=0;
+f->p=NULL;
+f->sizep=0;
+f->code=NULL;
+f->sizecode=0;
+f->sizelineinfo=0;
+f->sizeupvalues=0;
+f->nups=0;
+f->upvalues=NULL;
+f->numparams=0;
+f->is_vararg=0;
+f->maxstacksize=0;
+f->lineinfo=NULL;
+f->sizelocvars=0;
+f->locvars=NULL;
+f->linedefined=0;
+f->lastlinedefined=0;
+f->source=NULL;
+return f;
+}
+static void luaF_freeproto(lua_State*L,Proto*f){
+luaM_freearray(L,f->code,f->sizecode,Instruction);
+luaM_freearray(L,f->p,f->sizep,Proto*);
+luaM_freearray(L,f->k,f->sizek,TValue);
+luaM_freearray(L,f->lineinfo,f->sizelineinfo,int);
+luaM_freearray(L,f->locvars,f->sizelocvars,struct LocVar);
+luaM_freearray(L,f->upvalues,f->sizeupvalues,TString*);
+luaM_free(L,f);
+}
+static void luaF_freeclosure(lua_State*L,Closure*c){
+int size=(c->c.isC)?sizeCclosure(c->c.nupvalues):
+sizeLclosure(c->l.nupvalues);
+luaM_freemem(L,c,size);
+}
+#define MASK1(n,p)((~((~(Instruction)0)<<n))<<p)
+#define MASK0(n,p)(~MASK1(n,p))
+#define GET_OPCODE(i)(cast(OpCode,((i)>>0)&MASK1(6,0)))
+#define SET_OPCODE(i,o)((i)=(((i)&MASK0(6,0))|((cast(Instruction,o)<<0)&MASK1(6,0))))
+#define GETARG_A(i)(cast(int,((i)>>(0+6))&MASK1(8,0)))
+#define SETARG_A(i,u)((i)=(((i)&MASK0(8,(0+6)))|((cast(Instruction,u)<<(0+6))&MASK1(8,(0+6)))))
+#define GETARG_B(i)(cast(int,((i)>>(((0+6)+8)+9))&MASK1(9,0)))
+#define SETARG_B(i,b)((i)=(((i)&MASK0(9,(((0+6)+8)+9)))|((cast(Instruction,b)<<(((0+6)+8)+9))&MASK1(9,(((0+6)+8)+9)))))
+#define GETARG_C(i)(cast(int,((i)>>((0+6)+8))&MASK1(9,0)))
+#define SETARG_C(i,b)((i)=(((i)&MASK0(9,((0+6)+8)))|((cast(Instruction,b)<<((0+6)+8))&MASK1(9,((0+6)+8)))))
+#define GETARG_Bx(i)(cast(int,((i)>>((0+6)+8))&MASK1((9+9),0)))
+#define SETARG_Bx(i,b)((i)=(((i)&MASK0((9+9),((0+6)+8)))|((cast(Instruction,b)<<((0+6)+8))&MASK1((9+9),((0+6)+8)))))
+#define GETARG_sBx(i)(GETARG_Bx(i)-(((1<<(9+9))-1)>>1))
+#define SETARG_sBx(i,b)SETARG_Bx((i),cast(unsigned int,(b)+(((1<<(9+9))-1)>>1)))
+#define CREATE_ABC(o,a,b,c)((cast(Instruction,o)<<0)|(cast(Instruction,a)<<(0+6))|(cast(Instruction,b)<<(((0+6)+8)+9))|(cast(Instruction,c)<<((0+6)+8)))
+#define CREATE_ABx(o,a,bc)((cast(Instruction,o)<<0)|(cast(Instruction,a)<<(0+6))|(cast(Instruction,bc)<<((0+6)+8)))
+#define ISK(x)((x)&(1<<(9-1)))
+#define INDEXK(r)((int)(r)&~(1<<(9-1)))
+#define RKASK(x)((x)|(1<<(9-1)))
+static const lu_byte luaP_opmodes[(cast(int,OP_VARARG)+1)];
+#define getBMode(m)(cast(enum OpArgMask,(luaP_opmodes[m]>>4)&3))
+#define getCMode(m)(cast(enum OpArgMask,(luaP_opmodes[m]>>2)&3))
+#define testTMode(m)(luaP_opmodes[m]&(1<<7))
+typedef struct expdesc{
+expkind k;
+union{
+struct{int info,aux;}s;
+lua_Number nval;
+}u;
+int t;
+int f;
+}expdesc;
+typedef struct upvaldesc{
+lu_byte k;
+lu_byte info;
+}upvaldesc;
+struct BlockCnt;
+typedef struct FuncState{
+Proto*f;
+Table*h;
+struct FuncState*prev;
+struct LexState*ls;
+struct lua_State*L;
+struct BlockCnt*bl;
+int pc;
+int lasttarget;
+int jpc;
+int freereg;
+int nk;
+int np;
+short nlocvars;
+lu_byte nactvar;
+upvaldesc upvalues[60];
+unsigned short actvar[200];
+}FuncState;
+static Proto*luaY_parser(lua_State*L,ZIO*z,Mbuffer*buff,
+const char*name);
+struct lua_longjmp{
+struct lua_longjmp*previous;
+jmp_buf b;
+volatile int status;
+};
+static void luaD_seterrorobj(lua_State*L,int errcode,StkId oldtop){
+switch(errcode){
+case 4:{
+setsvalue(L,oldtop,luaS_newliteral(L,"not enough memory"));
+break;
+}
+case 5:{
+setsvalue(L,oldtop,luaS_newliteral(L,"error in error handling"));
+break;
+}
+case 3:
+case 2:{
+setobj(L,oldtop,L->top-1);
+break;
+}
+}
+L->top=oldtop+1;
+}
+static void restore_stack_limit(lua_State*L){
+if(L->size_ci>20000){
+int inuse=cast_int(L->ci-L->base_ci);
+if(inuse+1<20000)
+luaD_reallocCI(L,20000);
+}
+}
+static void resetstack(lua_State*L,int status){
+L->ci=L->base_ci;
+L->base=L->ci->base;
+luaF_close(L,L->base);
+luaD_seterrorobj(L,status,L->base);
+L->nCcalls=L->baseCcalls;
+L->allowhook=1;
+restore_stack_limit(L);
+L->errfunc=0;
+L->errorJmp=NULL;
+}
+static void luaD_throw(lua_State*L,int errcode){
+if(L->errorJmp){
+L->errorJmp->status=errcode;
+LUAI_THROW(L,L->errorJmp);
+}
+else{
+L->status=cast_byte(errcode);
+if(G(L)->panic){
+resetstack(L,errcode);
+G(L)->panic(L);
+}
+exit(EXIT_FAILURE);
+}
+}
+static int luaD_rawrunprotected(lua_State*L,Pfunc f,void*ud){
+struct lua_longjmp lj;
+lj.status=0;
+lj.previous=L->errorJmp;
+L->errorJmp=&lj;
+LUAI_TRY(L,&lj,
+(*f)(L,ud);
+);
+L->errorJmp=lj.previous;
+return lj.status;
+}
+static void correctstack(lua_State*L,TValue*oldstack){
+CallInfo*ci;
+GCObject*up;
+L->top=(L->top-oldstack)+L->stack;
+for(up=L->openupval;up!=NULL;up=up->gch.next)
+gco2uv(up)->v=(gco2uv(up)->v-oldstack)+L->stack;
+for(ci=L->base_ci;ci<=L->ci;ci++){
+ci->top=(ci->top-oldstack)+L->stack;
+ci->base=(ci->base-oldstack)+L->stack;
+ci->func=(ci->func-oldstack)+L->stack;
+}
+L->base=(L->base-oldstack)+L->stack;
+}
+static void luaD_reallocstack(lua_State*L,int newsize){
+TValue*oldstack=L->stack;
+int realsize=newsize+1+5;
+luaM_reallocvector(L,L->stack,L->stacksize,realsize,TValue);
+L->stacksize=realsize;
+L->stack_last=L->stack+newsize;
+correctstack(L,oldstack);
+}
+static void luaD_reallocCI(lua_State*L,int newsize){
+CallInfo*oldci=L->base_ci;
+luaM_reallocvector(L,L->base_ci,L->size_ci,newsize,CallInfo);
+L->size_ci=newsize;
+L->ci=(L->ci-oldci)+L->base_ci;
+L->end_ci=L->base_ci+L->size_ci-1;
+}
+static void luaD_growstack(lua_State*L,int n){
+if(n<=L->stacksize)
+luaD_reallocstack(L,2*L->stacksize);
+else
+luaD_reallocstack(L,L->stacksize+n);
+}
+static CallInfo*growCI(lua_State*L){
+if(L->size_ci>20000)
+luaD_throw(L,5);
+else{
+luaD_reallocCI(L,2*L->size_ci);
+if(L->size_ci>20000)
+luaG_runerror(L,"stack overflow");
+}
+return++L->ci;
+}
+static StkId adjust_varargs(lua_State*L,Proto*p,int actual){
+int i;
+int nfixargs=p->numparams;
+Table*htab=NULL;
+StkId base,fixed;
+for(;actual<nfixargs;++actual)
+setnilvalue(L->top++);
+fixed=L->top-actual;
+base=L->top;
+for(i=0;i<nfixargs;i++){
+setobj(L,L->top++,fixed+i);
+setnilvalue(fixed+i);
+}
+if(htab){
+sethvalue(L,L->top++,htab);
+}
+return base;
+}
+static StkId tryfuncTM(lua_State*L,StkId func){
+const TValue*tm=luaT_gettmbyobj(L,func,TM_CALL);
+StkId p;
+ptrdiff_t funcr=savestack(L,func);
+if(!ttisfunction(tm))
+luaG_typeerror(L,func,"call");
+for(p=L->top;p>func;p--)setobj(L,p,p-1);
+incr_top(L);
+func=restorestack(L,funcr);
+setobj(L,func,tm);
+return func;
+}
+#define inc_ci(L)((L->ci==L->end_ci)?growCI(L):(condhardstacktests(luaD_reallocCI(L,L->size_ci)),++L->ci))
+static int luaD_precall(lua_State*L,StkId func,int nresults){
+LClosure*cl;
+ptrdiff_t funcr;
+if(!ttisfunction(func))
+func=tryfuncTM(L,func);
+funcr=savestack(L,func);
+cl=&clvalue(func)->l;
+L->ci->savedpc=L->savedpc;
+if(!cl->isC){
+CallInfo*ci;
+StkId st,base;
+Proto*p=cl->p;
+luaD_checkstack(L,p->maxstacksize+p->numparams);
+func=restorestack(L,funcr);
+if(!p->is_vararg){
+base=func+1;
+if(L->top>base+p->numparams)
+L->top=base+p->numparams;
+}
+else{
+int nargs=cast_int(L->top-func)-1;
+base=adjust_varargs(L,p,nargs);
+func=restorestack(L,funcr);
+}
+ci=inc_ci(L);
+ci->func=func;
+L->base=ci->base=base;
+ci->top=L->base+p->maxstacksize;
+L->savedpc=p->code;
+ci->tailcalls=0;
+ci->nresults=nresults;
+for(st=L->top;st<ci->top;st++)
+setnilvalue(st);
+L->top=ci->top;
+return 0;
+}
+else{
+CallInfo*ci;
+int n;
+luaD_checkstack(L,20);
+ci=inc_ci(L);
+ci->func=restorestack(L,funcr);
+L->base=ci->base=ci->func+1;
+ci->top=L->top+20;
+ci->nresults=nresults;
+n=(*curr_func(L)->c.f)(L);
+if(n<0)
+return 2;
+else{
+luaD_poscall(L,L->top-n);
+return 1;
+}
+}
+}
+static int luaD_poscall(lua_State*L,StkId firstResult){
+StkId res;
+int wanted,i;
+CallInfo*ci;
+ci=L->ci--;
+res=ci->func;
+wanted=ci->nresults;
+L->base=(ci-1)->base;
+L->savedpc=(ci-1)->savedpc;
+for(i=wanted;i!=0&&firstResult<L->top;i--)
+setobj(L,res++,firstResult++);
+while(i-->0)
+setnilvalue(res++);
+L->top=res;
+return(wanted-(-1));
+}
+static void luaD_call(lua_State*L,StkId func,int nResults){
+if(++L->nCcalls>=200){
+if(L->nCcalls==200)
+luaG_runerror(L,"C stack overflow");
+else if(L->nCcalls>=(200+(200>>3)))
+luaD_throw(L,5);
+}
+if(luaD_precall(L,func,nResults)==0)
+luaV_execute(L,1);
+L->nCcalls--;
+luaC_checkGC(L);
+}
+static int luaD_pcall(lua_State*L,Pfunc func,void*u,
+ptrdiff_t old_top,ptrdiff_t ef){
+int status;
+unsigned short oldnCcalls=L->nCcalls;
+ptrdiff_t old_ci=saveci(L,L->ci);
+lu_byte old_allowhooks=L->allowhook;
+ptrdiff_t old_errfunc=L->errfunc;
+L->errfunc=ef;
+status=luaD_rawrunprotected(L,func,u);
+if(status!=0){
+StkId oldtop=restorestack(L,old_top);
+luaF_close(L,oldtop);
+luaD_seterrorobj(L,status,oldtop);
+L->nCcalls=oldnCcalls;
+L->ci=restoreci(L,old_ci);
+L->base=L->ci->base;
+L->savedpc=L->ci->savedpc;
+L->allowhook=old_allowhooks;
+restore_stack_limit(L);
+}
+L->errfunc=old_errfunc;
+return status;
+}
+struct SParser{
+ZIO*z;
+Mbuffer buff;
+const char*name;
+};
+static void f_parser(lua_State*L,void*ud){
+int i;
+Proto*tf;
+Closure*cl;
+struct SParser*p=cast(struct SParser*,ud);
+luaC_checkGC(L);
+tf=luaY_parser(L,p->z,
+&p->buff,p->name);
+cl=luaF_newLclosure(L,tf->nups,hvalue(gt(L)));
+cl->l.p=tf;
+for(i=0;i<tf->nups;i++)
+cl->l.upvals[i]=luaF_newupval(L);
+setclvalue(L,L->top,cl);
+incr_top(L);
+}
+static int luaD_protectedparser(lua_State*L,ZIO*z,const char*name){
+struct SParser p;
+int status;
+p.z=z;p.name=name;
+luaZ_initbuffer(L,&p.buff);
+status=luaD_pcall(L,f_parser,&p,savestack(L,L->top),L->errfunc);
+luaZ_freebuffer(L,&p.buff);
+return status;
+}
+static void luaS_resize(lua_State*L,int newsize){
+GCObject**newhash;
+stringtable*tb;
+int i;
+if(G(L)->gcstate==2)
+return;
+newhash=luaM_newvector(L,newsize,GCObject*);
+tb=&G(L)->strt;
+for(i=0;i<newsize;i++)newhash[i]=NULL;
+for(i=0;i<tb->size;i++){
+GCObject*p=tb->hash[i];
+while(p){
+GCObject*next=p->gch.next;
+unsigned int h=gco2ts(p)->hash;
+int h1=lmod(h,newsize);
+p->gch.next=newhash[h1];
+newhash[h1]=p;
+p=next;
+}
+}
+luaM_freearray(L,tb->hash,tb->size,TString*);
+tb->size=newsize;
+tb->hash=newhash;
+}
+static TString*newlstr(lua_State*L,const char*str,size_t l,
+unsigned int h){
+TString*ts;
+stringtable*tb;
+if(l+1>(((size_t)(~(size_t)0)-2)-sizeof(TString))/sizeof(char))
+luaM_toobig(L);
+ts=cast(TString*,luaM_malloc(L,(l+1)*sizeof(char)+sizeof(TString)));
+ts->tsv.len=l;
+ts->tsv.hash=h;
+ts->tsv.marked=luaC_white(G(L));
+ts->tsv.tt=4;
+ts->tsv.reserved=0;
+memcpy(ts+1,str,l*sizeof(char));
+((char*)(ts+1))[l]='\0';
+tb=&G(L)->strt;
+h=lmod(h,tb->size);
+ts->tsv.next=tb->hash[h];
+tb->hash[h]=obj2gco(ts);
+tb->nuse++;
+if(tb->nuse>cast(lu_int32,tb->size)&&tb->size<=(INT_MAX-2)/2)
+luaS_resize(L,tb->size*2);
+return ts;
+}
+static TString*luaS_newlstr(lua_State*L,const char*str,size_t l){
+GCObject*o;
+unsigned int h=cast(unsigned int,l);
+size_t step=(l>>5)+1;
+size_t l1;
+for(l1=l;l1>=step;l1-=step)
+h=h^((h<<5)+(h>>2)+cast(unsigned char,str[l1-1]));
+for(o=G(L)->strt.hash[lmod(h,G(L)->strt.size)];
+o!=NULL;
+o=o->gch.next){
+TString*ts=rawgco2ts(o);
+if(ts->tsv.len==l&&(memcmp(str,getstr(ts),l)==0)){
+if(isdead(G(L),o))changewhite(o);
+return ts;
+}
+}
+return newlstr(L,str,l,h);
+}
+static Udata*luaS_newudata(lua_State*L,size_t s,Table*e){
+Udata*u;
+if(s>((size_t)(~(size_t)0)-2)-sizeof(Udata))
+luaM_toobig(L);
+u=cast(Udata*,luaM_malloc(L,s+sizeof(Udata)));
+u->uv.marked=luaC_white(G(L));
+u->uv.tt=7;
+u->uv.len=s;
+u->uv.metatable=NULL;
+u->uv.env=e;
+u->uv.next=G(L)->mainthread->next;
+G(L)->mainthread->next=obj2gco(u);
+return u;
+}
+#define hashpow2(t,n)(gnode(t,lmod((n),sizenode(t))))
+#define hashstr(t,str)hashpow2(t,(str)->tsv.hash)
+#define hashboolean(t,p)hashpow2(t,p)
+#define hashmod(t,n)(gnode(t,((n)%((sizenode(t)-1)|1))))
+#define hashpointer(t,p)hashmod(t,IntPoint(p))
+static const Node dummynode_={
+{{NULL},0},
+{{{NULL},0,NULL}}
+};
+static Node*hashnum(const Table*t,lua_Number n){
+unsigned int a[cast_int(sizeof(lua_Number)/sizeof(int))];
+int i;
+if(luai_numeq(n,0))
+return gnode(t,0);
+memcpy(a,&n,sizeof(a));
+for(i=1;i<cast_int(sizeof(lua_Number)/sizeof(int));i++)a[0]+=a[i];
+return hashmod(t,a[0]);
+}
+static Node*mainposition(const Table*t,const TValue*key){
+switch(ttype(key)){
+case 3:
+return hashnum(t,nvalue(key));
+case 4:
+return hashstr(t,rawtsvalue(key));
+case 1:
+return hashboolean(t,bvalue(key));
+case 2:
+return hashpointer(t,pvalue(key));
+default:
+return hashpointer(t,gcvalue(key));
+}
+}
+static int arrayindex(const TValue*key){
+if(ttisnumber(key)){
+lua_Number n=nvalue(key);
+int k;
+lua_number2int(k,n);
+if(luai_numeq(cast_num(k),n))
+return k;
+}
+return-1;
+}
+static int findindex(lua_State*L,Table*t,StkId key){
+int i;
+if(ttisnil(key))return-1;
+i=arrayindex(key);
+if(0<i&&i<=t->sizearray)
+return i-1;
+else{
+Node*n=mainposition(t,key);
+do{
+if(luaO_rawequalObj(key2tval(n),key)||
+(ttype(gkey(n))==(8+3)&&iscollectable(key)&&
+gcvalue(gkey(n))==gcvalue(key))){
+i=cast_int(n-gnode(t,0));
+return i+t->sizearray;
+}
+else n=gnext(n);
+}while(n);
+luaG_runerror(L,"invalid key to "LUA_QL("next"));
+return 0;
+}
+}
+static int luaH_next(lua_State*L,Table*t,StkId key){
+int i=findindex(L,t,key);
+for(i++;i<t->sizearray;i++){
+if(!ttisnil(&t->array[i])){
+setnvalue(key,cast_num(i+1));
+setobj(L,key+1,&t->array[i]);
+return 1;
+}
+}
+for(i-=t->sizearray;i<(int)sizenode(t);i++){
+if(!ttisnil(gval(gnode(t,i)))){
+setobj(L,key,key2tval(gnode(t,i)));
+setobj(L,key+1,gval(gnode(t,i)));
+return 1;
+}
+}
+return 0;
+}
+static int computesizes(int nums[],int*narray){
+int i;
+int twotoi;
+int a=0;
+int na=0;
+int n=0;
+for(i=0,twotoi=1;twotoi/2<*narray;i++,twotoi*=2){
+if(nums[i]>0){
+a+=nums[i];
+if(a>twotoi/2){
+n=twotoi;
+na=a;
+}
+}
+if(a==*narray)break;
+}
+*narray=n;
+return na;
+}
+static int countint(const TValue*key,int*nums){
+int k=arrayindex(key);
+if(0<k&&k<=(1<<(32-2))){
+nums[ceillog2(k)]++;
+return 1;
+}
+else
+return 0;
+}
+static int numusearray(const Table*t,int*nums){
+int lg;
+int ttlg;
+int ause=0;
+int i=1;
+for(lg=0,ttlg=1;lg<=(32-2);lg++,ttlg*=2){
+int lc=0;
+int lim=ttlg;
+if(lim>t->sizearray){
+lim=t->sizearray;
+if(i>lim)
+break;
+}
+for(;i<=lim;i++){
+if(!ttisnil(&t->array[i-1]))
+lc++;
+}
+nums[lg]+=lc;
+ause+=lc;
+}
+return ause;
+}
+static int numusehash(const Table*t,int*nums,int*pnasize){
+int totaluse=0;
+int ause=0;
+int i=sizenode(t);
+while(i--){
+Node*n=&t->node[i];
+if(!ttisnil(gval(n))){
+ause+=countint(key2tval(n),nums);
+totaluse++;
+}
+}
+*pnasize+=ause;
+return totaluse;
+}
+static void setarrayvector(lua_State*L,Table*t,int size){
+int i;
+luaM_reallocvector(L,t->array,t->sizearray,size,TValue);
+for(i=t->sizearray;i<size;i++)
+setnilvalue(&t->array[i]);
+t->sizearray=size;
+}
+static void setnodevector(lua_State*L,Table*t,int size){
+int lsize;
+if(size==0){
+t->node=cast(Node*,(&dummynode_));
+lsize=0;
+}
+else{
+int i;
+lsize=ceillog2(size);
+if(lsize>(32-2))
+luaG_runerror(L,"table overflow");
+size=twoto(lsize);
+t->node=luaM_newvector(L,size,Node);
+for(i=0;i<size;i++){
+Node*n=gnode(t,i);
+gnext(n)=NULL;
+setnilvalue(gkey(n));
+setnilvalue(gval(n));
+}
+}
+t->lsizenode=cast_byte(lsize);
+t->lastfree=gnode(t,size);
+}
+static void resize(lua_State*L,Table*t,int nasize,int nhsize){
+int i;
+int oldasize=t->sizearray;
+int oldhsize=t->lsizenode;
+Node*nold=t->node;
+if(nasize>oldasize)
+setarrayvector(L,t,nasize);
+setnodevector(L,t,nhsize);
+if(nasize<oldasize){
+t->sizearray=nasize;
+for(i=nasize;i<oldasize;i++){
+if(!ttisnil(&t->array[i]))
+setobj(L,luaH_setnum(L,t,i+1),&t->array[i]);
+}
+luaM_reallocvector(L,t->array,oldasize,nasize,TValue);
+}
+for(i=twoto(oldhsize)-1;i>=0;i--){
+Node*old=nold+i;
+if(!ttisnil(gval(old)))
+setobj(L,luaH_set(L,t,key2tval(old)),gval(old));
+}
+if(nold!=(&dummynode_))
+luaM_freearray(L,nold,twoto(oldhsize),Node);
+}
+static void luaH_resizearray(lua_State*L,Table*t,int nasize){
+int nsize=(t->node==(&dummynode_))?0:sizenode(t);
+resize(L,t,nasize,nsize);
+}
+static void rehash(lua_State*L,Table*t,const TValue*ek){
+int nasize,na;
+int nums[(32-2)+1];
+int i;
+int totaluse;
+for(i=0;i<=(32-2);i++)nums[i]=0;
+nasize=numusearray(t,nums);
+totaluse=nasize;
+totaluse+=numusehash(t,nums,&nasize);
+nasize+=countint(ek,nums);
+totaluse++;
+na=computesizes(nums,&nasize);
+resize(L,t,nasize,totaluse-na);
+}
+static Table*luaH_new(lua_State*L,int narray,int nhash){
+Table*t=luaM_new(L,Table);
+luaC_link(L,obj2gco(t),5);
+t->metatable=NULL;
+t->flags=cast_byte(~0);
+t->array=NULL;
+t->sizearray=0;
+t->lsizenode=0;
+t->node=cast(Node*,(&dummynode_));
+setarrayvector(L,t,narray);
+setnodevector(L,t,nhash);
+return t;
+}
+static void luaH_free(lua_State*L,Table*t){
+if(t->node!=(&dummynode_))
+luaM_freearray(L,t->node,sizenode(t),Node);
+luaM_freearray(L,t->array,t->sizearray,TValue);
+luaM_free(L,t);
+}
+static Node*getfreepos(Table*t){
+while(t->lastfree-->t->node){
+if(ttisnil(gkey(t->lastfree)))
+return t->lastfree;
+}
+return NULL;
+}
+static TValue*newkey(lua_State*L,Table*t,const TValue*key){
+Node*mp=mainposition(t,key);
+if(!ttisnil(gval(mp))||mp==(&dummynode_)){
+Node*othern;
+Node*n=getfreepos(t);
+if(n==NULL){
+rehash(L,t,key);
+return luaH_set(L,t,key);
+}
+othern=mainposition(t,key2tval(mp));
+if(othern!=mp){
+while(gnext(othern)!=mp)othern=gnext(othern);
+gnext(othern)=n;
+*n=*mp;
+gnext(mp)=NULL;
+setnilvalue(gval(mp));
+}
+else{
+gnext(n)=gnext(mp);
+gnext(mp)=n;
+mp=n;
+}
+}
+gkey(mp)->value=key->value;gkey(mp)->tt=key->tt;
+luaC_barriert(L,t,key);
+return gval(mp);
+}
+static const TValue*luaH_getnum(Table*t,int key){
+if(cast(unsigned int,key)-1<cast(unsigned int,t->sizearray))
+return&t->array[key-1];
+else{
+lua_Number nk=cast_num(key);
+Node*n=hashnum(t,nk);
+do{
+if(ttisnumber(gkey(n))&&luai_numeq(nvalue(gkey(n)),nk))
+return gval(n);
+else n=gnext(n);
+}while(n);
+return(&luaO_nilobject_);
+}
+}
+static const TValue*luaH_getstr(Table*t,TString*key){
+Node*n=hashstr(t,key);
+do{
+if(ttisstring(gkey(n))&&rawtsvalue(gkey(n))==key)
+return gval(n);
+else n=gnext(n);
+}while(n);
+return(&luaO_nilobject_);
+}
+static const TValue*luaH_get(Table*t,const TValue*key){
+switch(ttype(key)){
+case 0:return(&luaO_nilobject_);
+case 4:return luaH_getstr(t,rawtsvalue(key));
+case 3:{
+int k;
+lua_Number n=nvalue(key);
+lua_number2int(k,n);
+if(luai_numeq(cast_num(k),nvalue(key)))
+return luaH_getnum(t,k);
+}
+/*fallthrough*/
+default:{
+Node*n=mainposition(t,key);
+do{
+if(luaO_rawequalObj(key2tval(n),key))
+return gval(n);
+else n=gnext(n);
+}while(n);
+return(&luaO_nilobject_);
+}
+}
+}
+static TValue*luaH_set(lua_State*L,Table*t,const TValue*key){
+const TValue*p=luaH_get(t,key);
+t->flags=0;
+if(p!=(&luaO_nilobject_))
+return cast(TValue*,p);
+else{
+if(ttisnil(key))luaG_runerror(L,"table index is nil");
+else if(ttisnumber(key)&&luai_numisnan(nvalue(key)))
+luaG_runerror(L,"table index is NaN");
+return newkey(L,t,key);
+}
+}
+static TValue*luaH_setnum(lua_State*L,Table*t,int key){
+const TValue*p=luaH_getnum(t,key);
+if(p!=(&luaO_nilobject_))
+return cast(TValue*,p);
+else{
+TValue k;
+setnvalue(&k,cast_num(key));
+return newkey(L,t,&k);
+}
+}
+static TValue*luaH_setstr(lua_State*L,Table*t,TString*key){
+const TValue*p=luaH_getstr(t,key);
+if(p!=(&luaO_nilobject_))
+return cast(TValue*,p);
+else{
+TValue k;
+setsvalue(L,&k,key);
+return newkey(L,t,&k);
+}
+}
+static int unbound_search(Table*t,unsigned int j){
+unsigned int i=j;
+j++;
+while(!ttisnil(luaH_getnum(t,j))){
+i=j;
+j*=2;
+if(j>cast(unsigned int,(INT_MAX-2))){
+i=1;
+while(!ttisnil(luaH_getnum(t,i)))i++;
+return i-1;
+}
+}
+while(j-i>1){
+unsigned int m=(i+j)/2;
+if(ttisnil(luaH_getnum(t,m)))j=m;
+else i=m;
+}
+return i;
+}
+static int luaH_getn(Table*t){
+unsigned int j=t->sizearray;
+if(j>0&&ttisnil(&t->array[j-1])){
+unsigned int i=0;
+while(j-i>1){
+unsigned int m=(i+j)/2;
+if(ttisnil(&t->array[m-1]))j=m;
+else i=m;
+}
+return i;
+}
+else if(t->node==(&dummynode_))
+return j;
+else return unbound_search(t,j);
+}
+#define makewhite(g,x)((x)->gch.marked=cast_byte(((x)->gch.marked&cast_byte(~(bitmask(2)|bit2mask(0,1))))|luaC_white(g)))
+#define white2gray(x)reset2bits((x)->gch.marked,0,1)
+#define black2gray(x)resetbit((x)->gch.marked,2)
+#define stringmark(s)reset2bits((s)->tsv.marked,0,1)
+#define isfinalized(u)testbit((u)->marked,3)
+#define markfinalized(u)l_setbit((u)->marked,3)
+#define markvalue(g,o){checkconsistency(o);if(iscollectable(o)&&iswhite(gcvalue(o)))reallymarkobject(g,gcvalue(o));}
+#define markobject(g,t){if(iswhite(obj2gco(t)))reallymarkobject(g,obj2gco(t));}
+#define setthreshold(g)(g->GCthreshold=(g->estimate/100)*g->gcpause)
+static void removeentry(Node*n){
+if(iscollectable(gkey(n)))
+setttype(gkey(n),(8+3));
+}
+static void reallymarkobject(global_State*g,GCObject*o){
+white2gray(o);
+switch(o->gch.tt){
+case 4:{
+return;
+}
+case 7:{
+Table*mt=gco2u(o)->metatable;
+gray2black(o);
+if(mt)markobject(g,mt);
+markobject(g,gco2u(o)->env);
+return;
+}
+case(8+2):{
+UpVal*uv=gco2uv(o);
+markvalue(g,uv->v);
+if(uv->v==&uv->u.value)
+gray2black(o);
+return;
+}
+case 6:{
+gco2cl(o)->c.gclist=g->gray;
+g->gray=o;
+break;
+}
+case 5:{
+gco2h(o)->gclist=g->gray;
+g->gray=o;
+break;
+}
+case 8:{
+gco2th(o)->gclist=g->gray;
+g->gray=o;
+break;
+}
+case(8+1):{
+gco2p(o)->gclist=g->gray;
+g->gray=o;
+break;
+}
+default:;
+}
+}
+static void marktmu(global_State*g){
+GCObject*u=g->tmudata;
+if(u){
+do{
+u=u->gch.next;
+makewhite(g,u);
+reallymarkobject(g,u);
+}while(u!=g->tmudata);
+}
+}
+static size_t luaC_separateudata(lua_State*L,int all){
+global_State*g=G(L);
+size_t deadmem=0;
+GCObject**p=&g->mainthread->next;
+GCObject*curr;
+while((curr=*p)!=NULL){
+if(!(iswhite(curr)||all)||isfinalized(gco2u(curr)))
+p=&curr->gch.next;
+else if(fasttm(L,gco2u(curr)->metatable,TM_GC)==NULL){
+markfinalized(gco2u(curr));
+p=&curr->gch.next;
+}
+else{
+deadmem+=sizeudata(gco2u(curr));
+markfinalized(gco2u(curr));
+*p=curr->gch.next;
+if(g->tmudata==NULL)
+g->tmudata=curr->gch.next=curr;
+else{
+curr->gch.next=g->tmudata->gch.next;
+g->tmudata->gch.next=curr;
+g->tmudata=curr;
+}
+}
+}
+return deadmem;
+}
+static int traversetable(global_State*g,Table*h){
+int i;
+int weakkey=0;
+int weakvalue=0;
+const TValue*mode;
+if(h->metatable)
+markobject(g,h->metatable);
+mode=gfasttm(g,h->metatable,TM_MODE);
+if(mode&&ttisstring(mode)){
+weakkey=(strchr(svalue(mode),'k')!=NULL);
+weakvalue=(strchr(svalue(mode),'v')!=NULL);
+if(weakkey||weakvalue){
+h->marked&=~(bitmask(3)|bitmask(4));
+h->marked|=cast_byte((weakkey<<3)|
+(weakvalue<<4));
+h->gclist=g->weak;
+g->weak=obj2gco(h);
+}
+}
+if(weakkey&&weakvalue)return 1;
+if(!weakvalue){
+i=h->sizearray;
+while(i--)
+markvalue(g,&h->array[i]);
+}
+i=sizenode(h);
+while(i--){
+Node*n=gnode(h,i);
+if(ttisnil(gval(n)))
+removeentry(n);
+else{
+if(!weakkey)markvalue(g,gkey(n));
+if(!weakvalue)markvalue(g,gval(n));
+}
+}
+return weakkey||weakvalue;
+}
+static void traverseproto(global_State*g,Proto*f){
+int i;
+if(f->source)stringmark(f->source);
+for(i=0;i<f->sizek;i++)
+markvalue(g,&f->k[i]);
+for(i=0;i<f->sizeupvalues;i++){
+if(f->upvalues[i])
+stringmark(f->upvalues[i]);
+}
+for(i=0;i<f->sizep;i++){
+if(f->p[i])
+markobject(g,f->p[i]);
+}
+for(i=0;i<f->sizelocvars;i++){
+if(f->locvars[i].varname)
+stringmark(f->locvars[i].varname);
+}
+}
+static void traverseclosure(global_State*g,Closure*cl){
+markobject(g,cl->c.env);
+if(cl->c.isC){
+int i;
+for(i=0;i<cl->c.nupvalues;i++)
+markvalue(g,&cl->c.upvalue[i]);
+}
+else{
+int i;
+markobject(g,cl->l.p);
+for(i=0;i<cl->l.nupvalues;i++)
+markobject(g,cl->l.upvals[i]);
+}
+}
+static void checkstacksizes(lua_State*L,StkId max){
+int ci_used=cast_int(L->ci-L->base_ci);
+int s_used=cast_int(max-L->stack);
+if(L->size_ci>20000)
+return;
+if(4*ci_used<L->size_ci&&2*8<L->size_ci)
+luaD_reallocCI(L,L->size_ci/2);
+condhardstacktests(luaD_reallocCI(L,ci_used+1));
+if(4*s_used<L->stacksize&&
+2*((2*20)+5)<L->stacksize)
+luaD_reallocstack(L,L->stacksize/2);
+condhardstacktests(luaD_reallocstack(L,s_used));
+}
+static void traversestack(global_State*g,lua_State*l){
+StkId o,lim;
+CallInfo*ci;
+markvalue(g,gt(l));
+lim=l->top;
+for(ci=l->base_ci;ci<=l->ci;ci++){
+if(lim<ci->top)lim=ci->top;
+}
+for(o=l->stack;o<l->top;o++)
+markvalue(g,o);
+for(;o<=lim;o++)
+setnilvalue(o);
+checkstacksizes(l,lim);
+}
+static l_mem propagatemark(global_State*g){
+GCObject*o=g->gray;
+gray2black(o);
+switch(o->gch.tt){
+case 5:{
+Table*h=gco2h(o);
+g->gray=h->gclist;
+if(traversetable(g,h))
+black2gray(o);
+return sizeof(Table)+sizeof(TValue)*h->sizearray+
+sizeof(Node)*sizenode(h);
+}
+case 6:{
+Closure*cl=gco2cl(o);
+g->gray=cl->c.gclist;
+traverseclosure(g,cl);
+return(cl->c.isC)?sizeCclosure(cl->c.nupvalues):
+sizeLclosure(cl->l.nupvalues);
+}
+case 8:{
+lua_State*th=gco2th(o);
+g->gray=th->gclist;
+th->gclist=g->grayagain;
+g->grayagain=o;
+black2gray(o);
+traversestack(g,th);
+return sizeof(lua_State)+sizeof(TValue)*th->stacksize+
+sizeof(CallInfo)*th->size_ci;
+}
+case(8+1):{
+Proto*p=gco2p(o);
+g->gray=p->gclist;
+traverseproto(g,p);
+return sizeof(Proto)+sizeof(Instruction)*p->sizecode+
+sizeof(Proto*)*p->sizep+
+sizeof(TValue)*p->sizek+
+sizeof(int)*p->sizelineinfo+
+sizeof(LocVar)*p->sizelocvars+
+sizeof(TString*)*p->sizeupvalues;
+}
+default:return 0;
+}
+}
+static size_t propagateall(global_State*g){
+size_t m=0;
+while(g->gray)m+=propagatemark(g);
+return m;
+}
+static int iscleared(const TValue*o,int iskey){
+if(!iscollectable(o))return 0;
+if(ttisstring(o)){
+stringmark(rawtsvalue(o));
+return 0;
+}
+return iswhite(gcvalue(o))||
+(ttisuserdata(o)&&(!iskey&&isfinalized(uvalue(o))));
+}
+static void cleartable(GCObject*l){
+while(l){
+Table*h=gco2h(l);
+int i=h->sizearray;
+if(testbit(h->marked,4)){
+while(i--){
+TValue*o=&h->array[i];
+if(iscleared(o,0))
+setnilvalue(o);
+}
+}
+i=sizenode(h);
+while(i--){
+Node*n=gnode(h,i);
+if(!ttisnil(gval(n))&&
+(iscleared(key2tval(n),1)||iscleared(gval(n),0))){
+setnilvalue(gval(n));
+removeentry(n);
+}
+}
+l=h->gclist;
+}
+}
+static void freeobj(lua_State*L,GCObject*o){
+switch(o->gch.tt){
+case(8+1):luaF_freeproto(L,gco2p(o));break;
+case 6:luaF_freeclosure(L,gco2cl(o));break;
+case(8+2):luaF_freeupval(L,gco2uv(o));break;
+case 5:luaH_free(L,gco2h(o));break;
+case 8:{
+luaE_freethread(L,gco2th(o));
+break;
+}
+case 4:{
+G(L)->strt.nuse--;
+luaM_freemem(L,o,sizestring(gco2ts(o)));
+break;
+}
+case 7:{
+luaM_freemem(L,o,sizeudata(gco2u(o)));
+break;
+}
+default:;
+}
+}
+#define sweepwholelist(L,p)sweeplist(L,p,((lu_mem)(~(lu_mem)0)-2))
+static GCObject**sweeplist(lua_State*L,GCObject**p,lu_mem count){
+GCObject*curr;
+global_State*g=G(L);
+int deadmask=otherwhite(g);
+while((curr=*p)!=NULL&&count-->0){
+if(curr->gch.tt==8)
+sweepwholelist(L,&gco2th(curr)->openupval);
+if((curr->gch.marked^bit2mask(0,1))&deadmask){
+makewhite(g,curr);
+p=&curr->gch.next;
+}
+else{
+*p=curr->gch.next;
+if(curr==g->rootgc)
+g->rootgc=curr->gch.next;
+freeobj(L,curr);
+}
+}
+return p;
+}
+static void checkSizes(lua_State*L){
+global_State*g=G(L);
+if(g->strt.nuse<cast(lu_int32,g->strt.size/4)&&
+g->strt.size>32*2)
+luaS_resize(L,g->strt.size/2);
+if(luaZ_sizebuffer(&g->buff)>32*2){
+size_t newsize=luaZ_sizebuffer(&g->buff)/2;
+luaZ_resizebuffer(L,&g->buff,newsize);
+}
+}
+static void GCTM(lua_State*L){
+global_State*g=G(L);
+GCObject*o=g->tmudata->gch.next;
+Udata*udata=rawgco2u(o);
+const TValue*tm;
+if(o==g->tmudata)
+g->tmudata=NULL;
+else
+g->tmudata->gch.next=udata->uv.next;
+udata->uv.next=g->mainthread->next;
+g->mainthread->next=o;
+makewhite(g,o);
+tm=fasttm(L,udata->uv.metatable,TM_GC);
+if(tm!=NULL){
+lu_byte oldah=L->allowhook;
+lu_mem oldt=g->GCthreshold;
+L->allowhook=0;
+g->GCthreshold=2*g->totalbytes;
+setobj(L,L->top,tm);
+setuvalue(L,L->top+1,udata);
+L->top+=2;
+luaD_call(L,L->top-2,0);
+L->allowhook=oldah;
+g->GCthreshold=oldt;
+}
+}
+static void luaC_callGCTM(lua_State*L){
+while(G(L)->tmudata)
+GCTM(L);
+}
+static void luaC_freeall(lua_State*L){
+global_State*g=G(L);
+int i;
+g->currentwhite=bit2mask(0,1)|bitmask(6);
+sweepwholelist(L,&g->rootgc);
+for(i=0;i<g->strt.size;i++)
+sweepwholelist(L,&g->strt.hash[i]);
+}
+static void markmt(global_State*g){
+int i;
+for(i=0;i<(8+1);i++)
+if(g->mt[i])markobject(g,g->mt[i]);
+}
+static void markroot(lua_State*L){
+global_State*g=G(L);
+g->gray=NULL;
+g->grayagain=NULL;
+g->weak=NULL;
+markobject(g,g->mainthread);
+markvalue(g,gt(g->mainthread));
+markvalue(g,registry(L));
+markmt(g);
+g->gcstate=1;
+}
+static void remarkupvals(global_State*g){
+UpVal*uv;
+for(uv=g->uvhead.u.l.next;uv!=&g->uvhead;uv=uv->u.l.next){
+if(isgray(obj2gco(uv)))
+markvalue(g,uv->v);
+}
+}
+static void atomic(lua_State*L){
+global_State*g=G(L);
+size_t udsize;
+remarkupvals(g);
+propagateall(g);
+g->gray=g->weak;
+g->weak=NULL;
+markobject(g,L);
+markmt(g);
+propagateall(g);
+g->gray=g->grayagain;
+g->grayagain=NULL;
+propagateall(g);
+udsize=luaC_separateudata(L,0);
+marktmu(g);
+udsize+=propagateall(g);
+cleartable(g->weak);
+g->currentwhite=cast_byte(otherwhite(g));
+g->sweepstrgc=0;
+g->sweepgc=&g->rootgc;
+g->gcstate=2;
+g->estimate=g->totalbytes-udsize;
+}
+static l_mem singlestep(lua_State*L){
+global_State*g=G(L);
+switch(g->gcstate){
+case 0:{
+markroot(L);
+return 0;
+}
+case 1:{
+if(g->gray)
+return propagatemark(g);
+else{
+atomic(L);
+return 0;
+}
+}
+case 2:{
+lu_mem old=g->totalbytes;
+sweepwholelist(L,&g->strt.hash[g->sweepstrgc++]);
+if(g->sweepstrgc>=g->strt.size)
+g->gcstate=3;
+g->estimate-=old-g->totalbytes;
+return 10;
+}
+case 3:{
+lu_mem old=g->totalbytes;
+g->sweepgc=sweeplist(L,g->sweepgc,40);
+if(*g->sweepgc==NULL){
+checkSizes(L);
+g->gcstate=4;
+}
+g->estimate-=old-g->totalbytes;
+return 40*10;
+}
+case 4:{
+if(g->tmudata){
+GCTM(L);
+if(g->estimate>100)
+g->estimate-=100;
+return 100;
+}
+else{
+g->gcstate=0;
+g->gcdept=0;
+return 0;
+}
+}
+default:return 0;
+}
+}
+static void luaC_step(lua_State*L){
+global_State*g=G(L);
+l_mem lim=(1024u/100)*g->gcstepmul;
+if(lim==0)
+lim=(((lu_mem)(~(lu_mem)0)-2)-1)/2;
+g->gcdept+=g->totalbytes-g->GCthreshold;
+do{
+lim-=singlestep(L);
+if(g->gcstate==0)
+break;
+}while(lim>0);
+if(g->gcstate!=0){
+if(g->gcdept<1024u)
+g->GCthreshold=g->totalbytes+1024u;
+else{
+g->gcdept-=1024u;
+g->GCthreshold=g->totalbytes;
+}
+}
+else{
+setthreshold(g);
+}
+}
+static void luaC_barrierf(lua_State*L,GCObject*o,GCObject*v){
+global_State*g=G(L);
+if(g->gcstate==1)
+reallymarkobject(g,v);
+else
+makewhite(g,o);
+}
+static void luaC_barrierback(lua_State*L,Table*t){
+global_State*g=G(L);
+GCObject*o=obj2gco(t);
+black2gray(o);
+t->gclist=g->grayagain;
+g->grayagain=o;
+}
+static void luaC_link(lua_State*L,GCObject*o,lu_byte tt){
+global_State*g=G(L);
+o->gch.next=g->rootgc;
+g->rootgc=o;
+o->gch.marked=luaC_white(g);
+o->gch.tt=tt;
+}
+static void luaC_linkupval(lua_State*L,UpVal*uv){
+global_State*g=G(L);
+GCObject*o=obj2gco(uv);
+o->gch.next=g->rootgc;
+g->rootgc=o;
+if(isgray(o)){
+if(g->gcstate==1){
+gray2black(o);
+luaC_barrier(L,uv,uv->v);
+}
+else{
+makewhite(g,o);
+}
+}
+}
+typedef union{
+lua_Number r;
+TString*ts;
+}SemInfo;
+typedef struct Token{
+int token;
+SemInfo seminfo;
+}Token;
+typedef struct LexState{
+int current;
+int linenumber;
+int lastline;
+Token t;
+Token lookahead;
+struct FuncState*fs;
+struct lua_State*L;
+ZIO*z;
+Mbuffer*buff;
+TString*source;
+char decpoint;
+}LexState;
+static void luaX_init(lua_State*L);
+static void luaX_lexerror(LexState*ls,const char*msg,int token);
+#define state_size(x)(sizeof(x)+0)
+#define fromstate(l)(cast(lu_byte*,(l))-0)
+#define tostate(l)(cast(lua_State*,cast(lu_byte*,l)+0))
+typedef struct LG{
+lua_State l;
+global_State g;
+}LG;
+static void stack_init(lua_State*L1,lua_State*L){
+L1->base_ci=luaM_newvector(L,8,CallInfo);
+L1->ci=L1->base_ci;
+L1->size_ci=8;
+L1->end_ci=L1->base_ci+L1->size_ci-1;
+L1->stack=luaM_newvector(L,(2*20)+5,TValue);
+L1->stacksize=(2*20)+5;
+L1->top=L1->stack;
+L1->stack_last=L1->stack+(L1->stacksize-5)-1;
+L1->ci->func=L1->top;
+setnilvalue(L1->top++);
+L1->base=L1->ci->base=L1->top;
+L1->ci->top=L1->top+20;
+}
+static void freestack(lua_State*L,lua_State*L1){
+luaM_freearray(L,L1->base_ci,L1->size_ci,CallInfo);
+luaM_freearray(L,L1->stack,L1->stacksize,TValue);
+}
+static void f_luaopen(lua_State*L,void*ud){
+global_State*g=G(L);
+UNUSED(ud);
+stack_init(L,L);
+sethvalue(L,gt(L),luaH_new(L,0,2));
+sethvalue(L,registry(L),luaH_new(L,0,2));
+luaS_resize(L,32);
+luaT_init(L);
+luaX_init(L);
+luaS_fix(luaS_newliteral(L,"not enough memory"));
+g->GCthreshold=4*g->totalbytes;
+}
+static void preinit_state(lua_State*L,global_State*g){
+G(L)=g;
+L->stack=NULL;
+L->stacksize=0;
+L->errorJmp=NULL;
+L->hook=NULL;
+L->hookmask=0;
+L->basehookcount=0;
+L->allowhook=1;
+resethookcount(L);
+L->openupval=NULL;
+L->size_ci=0;
+L->nCcalls=L->baseCcalls=0;
+L->status=0;
+L->base_ci=L->ci=NULL;
+L->savedpc=NULL;
+L->errfunc=0;
+setnilvalue(gt(L));
+}
+static void close_state(lua_State*L){
+global_State*g=G(L);
+luaF_close(L,L->stack);
+luaC_freeall(L);
+luaM_freearray(L,G(L)->strt.hash,G(L)->strt.size,TString*);
+luaZ_freebuffer(L,&g->buff);
+freestack(L,L);
+(*g->frealloc)(g->ud,fromstate(L),state_size(LG),0);
+}
+static void luaE_freethread(lua_State*L,lua_State*L1){
+luaF_close(L1,L1->stack);
+freestack(L,L1);
+luaM_freemem(L,fromstate(L1),state_size(lua_State));
+}
+static lua_State*lua_newstate(lua_Alloc f,void*ud){
+int i;
+lua_State*L;
+global_State*g;
+void*l=(*f)(ud,NULL,0,state_size(LG));
+if(l==NULL)return NULL;
+L=tostate(l);
+g=&((LG*)L)->g;
+L->next=NULL;
+L->tt=8;
+g->currentwhite=bit2mask(0,5);
+L->marked=luaC_white(g);
+set2bits(L->marked,5,6);
+preinit_state(L,g);
+g->frealloc=f;
+g->ud=ud;
+g->mainthread=L;
+g->uvhead.u.l.prev=&g->uvhead;
+g->uvhead.u.l.next=&g->uvhead;
+g->GCthreshold=0;
+g->strt.size=0;
+g->strt.nuse=0;
+g->strt.hash=NULL;
+setnilvalue(registry(L));
+luaZ_initbuffer(L,&g->buff);
+g->panic=NULL;
+g->gcstate=0;
+g->rootgc=obj2gco(L);
+g->sweepstrgc=0;
+g->sweepgc=&g->rootgc;
+g->gray=NULL;
+g->grayagain=NULL;
+g->weak=NULL;
+g->tmudata=NULL;
+g->totalbytes=sizeof(LG);
+g->gcpause=200;
+g->gcstepmul=200;
+g->gcdept=0;
+for(i=0;i<(8+1);i++)g->mt[i]=NULL;
+if(luaD_rawrunprotected(L,f_luaopen,NULL)!=0){
+close_state(L);
+L=NULL;
+}
+else
+{}
+return L;
+}
+static void callallgcTM(lua_State*L,void*ud){
+UNUSED(ud);
+luaC_callGCTM(L);
+}
+static void lua_close(lua_State*L){
+L=G(L)->mainthread;
+luaF_close(L,L->stack);
+luaC_separateudata(L,1);
+L->errfunc=0;
+do{
+L->ci=L->base_ci;
+L->base=L->top=L->ci->base;
+L->nCcalls=L->baseCcalls=0;
+}while(luaD_rawrunprotected(L,callallgcTM,NULL)!=0);
+close_state(L);
+}
+#define getcode(fs,e)((fs)->f->code[(e)->u.s.info])
+#define luaK_codeAsBx(fs,o,A,sBx)luaK_codeABx(fs,o,A,(sBx)+(((1<<(9+9))-1)>>1))
+#define luaK_setmultret(fs,e)luaK_setreturns(fs,e,(-1))
+static int luaK_codeABx(FuncState*fs,OpCode o,int A,unsigned int Bx);
+static int luaK_codeABC(FuncState*fs,OpCode o,int A,int B,int C);
+static void luaK_setreturns(FuncState*fs,expdesc*e,int nresults);
+static void luaK_patchtohere(FuncState*fs,int list);
+static void luaK_concat(FuncState*fs,int*l1,int l2);
+static int currentpc(lua_State*L,CallInfo*ci){
+if(!isLua(ci))return-1;
+if(ci==L->ci)
+ci->savedpc=L->savedpc;
+return pcRel(ci->savedpc,ci_func(ci)->l.p);
+}
+static int currentline(lua_State*L,CallInfo*ci){
+int pc=currentpc(L,ci);
+if(pc<0)
+return-1;
+else
+return getline_(ci_func(ci)->l.p,pc);
+}
+static int lua_getstack(lua_State*L,int level,lua_Debug*ar){
+int status;
+CallInfo*ci;
+for(ci=L->ci;level>0&&ci>L->base_ci;ci--){
+level--;
+if(f_isLua(ci))
+level-=ci->tailcalls;
+}
+if(level==0&&ci>L->base_ci){
+status=1;
+ar->i_ci=cast_int(ci-L->base_ci);
+}
+else if(level<0){
+status=1;
+ar->i_ci=0;
+}
+else status=0;
+return status;
+}
+static Proto*getluaproto(CallInfo*ci){
+return(isLua(ci)?ci_func(ci)->l.p:NULL);
+}
+static void funcinfo(lua_Debug*ar,Closure*cl){
+if(cl->c.isC){
+ar->source="=[C]";
+ar->linedefined=-1;
+ar->lastlinedefined=-1;
+ar->what="C";
+}
+else{
+ar->source=getstr(cl->l.p->source);
+ar->linedefined=cl->l.p->linedefined;
+ar->lastlinedefined=cl->l.p->lastlinedefined;
+ar->what=(ar->linedefined==0)?"main":"Lua";
+}
+luaO_chunkid(ar->short_src,ar->source,60);
+}
+static void info_tailcall(lua_Debug*ar){
+ar->name=ar->namewhat="";
+ar->what="tail";
+ar->lastlinedefined=ar->linedefined=ar->currentline=-1;
+ar->source="=(tail call)";
+luaO_chunkid(ar->short_src,ar->source,60);
+ar->nups=0;
+}
+static void collectvalidlines(lua_State*L,Closure*f){
+if(f==NULL||f->c.isC){
+setnilvalue(L->top);
+}
+else{
+Table*t=luaH_new(L,0,0);
+int*lineinfo=f->l.p->lineinfo;
+int i;
+for(i=0;i<f->l.p->sizelineinfo;i++)
+setbvalue(luaH_setnum(L,t,lineinfo[i]),1);
+sethvalue(L,L->top,t);
+}
+incr_top(L);
+}
+static int auxgetinfo(lua_State*L,const char*what,lua_Debug*ar,
+Closure*f,CallInfo*ci){
+int status=1;
+if(f==NULL){
+info_tailcall(ar);
+return status;
+}
+for(;*what;what++){
+switch(*what){
+case'S':{
+funcinfo(ar,f);
+break;
+}
+case'l':{
+ar->currentline=(ci)?currentline(L,ci):-1;
+break;
+}
+case'u':{
+ar->nups=f->c.nupvalues;
+break;
+}
+case'n':{
+ar->namewhat=(ci)?NULL:NULL;
+if(ar->namewhat==NULL){
+ar->namewhat="";
+ar->name=NULL;
+}
+break;
+}
+case'L':
+case'f':
+break;
+default:status=0;
+}
+}
+return status;
+}
+static int lua_getinfo(lua_State*L,const char*what,lua_Debug*ar){
+int status;
+Closure*f=NULL;
+CallInfo*ci=NULL;
+if(*what=='>'){
+StkId func=L->top-1;
+luai_apicheck(L,ttisfunction(func));
+what++;
+f=clvalue(func);
+L->top--;
+}
+else if(ar->i_ci!=0){
+ci=L->base_ci+ar->i_ci;
+f=clvalue(ci->func);
+}
+status=auxgetinfo(L,what,ar,f,ci);
+if(strchr(what,'f')){
+if(f==NULL)setnilvalue(L->top);
+else setclvalue(L,L->top,f);
+incr_top(L);
+}
+if(strchr(what,'L'))
+collectvalidlines(L,f);
+return status;
+}
+static int isinstack(CallInfo*ci,const TValue*o){
+StkId p;
+for(p=ci->base;p<ci->top;p++)
+if(o==p)return 1;
+return 0;
+}
+static void luaG_typeerror(lua_State*L,const TValue*o,const char*op){
+const char*name=NULL;
+const char*t=luaT_typenames[ttype(o)];
+const char*kind=(isinstack(L->ci,o))?
+NULL:
+NULL;
+if(kind)
+luaG_runerror(L,"attempt to %s %s "LUA_QL("%s")" (a %s value)",
+op,kind,name,t);
+else
+luaG_runerror(L,"attempt to %s a %s value",op,t);
+}
+static void luaG_concaterror(lua_State*L,StkId p1,StkId p2){
+if(ttisstring(p1)||ttisnumber(p1))p1=p2;
+luaG_typeerror(L,p1,"concatenate");
+}
+static void luaG_aritherror(lua_State*L,const TValue*p1,const TValue*p2){
+TValue temp;
+if(luaV_tonumber(p1,&temp)==NULL)
+p2=p1;
+luaG_typeerror(L,p2,"perform arithmetic on");
+}
+static int luaG_ordererror(lua_State*L,const TValue*p1,const TValue*p2){
+const char*t1=luaT_typenames[ttype(p1)];
+const char*t2=luaT_typenames[ttype(p2)];
+if(t1[2]==t2[2])
+luaG_runerror(L,"attempt to compare two %s values",t1);
+else
+luaG_runerror(L,"attempt to compare %s with %s",t1,t2);
+return 0;
+}
+static void addinfo(lua_State*L,const char*msg){
+CallInfo*ci=L->ci;
+if(isLua(ci)){
+char buff[60];
+int line=currentline(L,ci);
+luaO_chunkid(buff,getstr(getluaproto(ci)->source),60);
+luaO_pushfstring(L,"%s:%d: %s",buff,line,msg);
+}
+}
+static void luaG_errormsg(lua_State*L){
+if(L->errfunc!=0){
+StkId errfunc=restorestack(L,L->errfunc);
+if(!ttisfunction(errfunc))luaD_throw(L,5);
+setobj(L,L->top,L->top-1);
+setobj(L,L->top-1,errfunc);
+incr_top(L);
+luaD_call(L,L->top-2,1);
+}
+luaD_throw(L,2);
+}
+static void luaG_runerror(lua_State*L,const char*fmt,...){
+va_list argp;
+va_start(argp,fmt);
+addinfo(L,luaO_pushvfstring(L,fmt,argp));
+va_end(argp);
+luaG_errormsg(L);
+}
+static int luaZ_fill(ZIO*z){
+size_t size;
+lua_State*L=z->L;
+const char*buff;
+buff=z->reader(L,z->data,&size);
+if(buff==NULL||size==0)return(-1);
+z->n=size-1;
+z->p=buff;
+return char2int(*(z->p++));
+}
+static void luaZ_init(lua_State*L,ZIO*z,lua_Reader reader,void*data){
+z->L=L;
+z->reader=reader;
+z->data=data;
+z->n=0;
+z->p=NULL;
+}
+static char*luaZ_openspace(lua_State*L,Mbuffer*buff,size_t n){
+if(n>buff->buffsize){
+if(n<32)n=32;
+luaZ_resizebuffer(L,buff,n);
+}
+return buff->buffer;
+}
+#define opmode(t,a,b,c,m)(((t)<<7)|((a)<<6)|((b)<<4)|((c)<<2)|(m))
+static const lu_byte luaP_opmodes[(cast(int,OP_VARARG)+1)]={
+opmode(0,1,OpArgR,OpArgN,iABC)
+,opmode(0,1,OpArgK,OpArgN,iABx)
+,opmode(0,1,OpArgU,OpArgU,iABC)
+,opmode(0,1,OpArgR,OpArgN,iABC)
+,opmode(0,1,OpArgU,OpArgN,iABC)
+,opmode(0,1,OpArgK,OpArgN,iABx)
+,opmode(0,1,OpArgR,OpArgK,iABC)
+,opmode(0,0,OpArgK,OpArgN,iABx)
+,opmode(0,0,OpArgU,OpArgN,iABC)
+,opmode(0,0,OpArgK,OpArgK,iABC)
+,opmode(0,1,OpArgU,OpArgU,iABC)
+,opmode(0,1,OpArgR,OpArgK,iABC)
+,opmode(0,1,OpArgK,OpArgK,iABC)
+,opmode(0,1,OpArgK,OpArgK,iABC)
+,opmode(0,1,OpArgK,OpArgK,iABC)
+,opmode(0,1,OpArgK,OpArgK,iABC)
+,opmode(0,1,OpArgK,OpArgK,iABC)
+,opmode(0,1,OpArgK,OpArgK,iABC)
+,opmode(0,1,OpArgR,OpArgN,iABC)
+,opmode(0,1,OpArgR,OpArgN,iABC)
+,opmode(0,1,OpArgR,OpArgN,iABC)
+,opmode(0,1,OpArgR,OpArgR,iABC)
+,opmode(0,0,OpArgR,OpArgN,iAsBx)
+,opmode(1,0,OpArgK,OpArgK,iABC)
+,opmode(1,0,OpArgK,OpArgK,iABC)
+,opmode(1,0,OpArgK,OpArgK,iABC)
+,opmode(1,1,OpArgR,OpArgU,iABC)
+,opmode(1,1,OpArgR,OpArgU,iABC)
+,opmode(0,1,OpArgU,OpArgU,iABC)
+,opmode(0,1,OpArgU,OpArgU,iABC)
+,opmode(0,0,OpArgU,OpArgN,iABC)
+,opmode(0,1,OpArgR,OpArgN,iAsBx)
+,opmode(0,1,OpArgR,OpArgN,iAsBx)
+,opmode(1,0,OpArgN,OpArgU,iABC)
+,opmode(0,0,OpArgU,OpArgU,iABC)
+,opmode(0,0,OpArgN,OpArgN,iABC)
+,opmode(0,1,OpArgU,OpArgN,iABx)
+,opmode(0,1,OpArgU,OpArgN,iABC)
+};
+#define next(ls)(ls->current=zgetc(ls->z))
+#define currIsNewline(ls)(ls->current=='\n'||ls->current=='\r')
+static const char*const luaX_tokens[]={
+"and","break","do","else","elseif",
+"end","false","for","function","if",
+"in","local","nil","not","or","repeat",
+"return","then","true","until","while",
+"..","...","==",">=","<=","~=",
+"<number>","<name>","<string>","<eof>",
+NULL
+};
+#define save_and_next(ls)(save(ls,ls->current),next(ls))
+static void save(LexState*ls,int c){
+Mbuffer*b=ls->buff;
+if(b->n+1>b->buffsize){
+size_t newsize;
+if(b->buffsize>=((size_t)(~(size_t)0)-2)/2)
+luaX_lexerror(ls,"lexical element too long",0);
+newsize=b->buffsize*2;
+luaZ_resizebuffer(ls->L,b,newsize);
+}
+b->buffer[b->n++]=cast(char,c);
+}
+static void luaX_init(lua_State*L){
+int i;
+for(i=0;i<(cast(int,TK_WHILE-257+1));i++){
+TString*ts=luaS_new(L,luaX_tokens[i]);
+luaS_fix(ts);
+ts->tsv.reserved=cast_byte(i+1);
+}
+}
+static const char*luaX_token2str(LexState*ls,int token){
+if(token<257){
+return(iscntrl(token))?luaO_pushfstring(ls->L,"char(%d)",token):
+luaO_pushfstring(ls->L,"%c",token);
+}
+else
+return luaX_tokens[token-257];
+}
+static const char*txtToken(LexState*ls,int token){
+switch(token){
+case TK_NAME:
+case TK_STRING:
+case TK_NUMBER:
+save(ls,'\0');
+return luaZ_buffer(ls->buff);
+default:
+return luaX_token2str(ls,token);
+}
+}
+static void luaX_lexerror(LexState*ls,const char*msg,int token){
+char buff[80];
+luaO_chunkid(buff,getstr(ls->source),80);
+msg=luaO_pushfstring(ls->L,"%s:%d: %s",buff,ls->linenumber,msg);
+if(token)
+luaO_pushfstring(ls->L,"%s near "LUA_QL("%s"),msg,txtToken(ls,token));
+luaD_throw(ls->L,3);
+}
+static void luaX_syntaxerror(LexState*ls,const char*msg){
+luaX_lexerror(ls,msg,ls->t.token);
+}
+static TString*luaX_newstring(LexState*ls,const char*str,size_t l){
+lua_State*L=ls->L;
+TString*ts=luaS_newlstr(L,str,l);
+TValue*o=luaH_setstr(L,ls->fs->h,ts);
+if(ttisnil(o)){
+setbvalue(o,1);
+luaC_checkGC(L);
+}
+return ts;
+}
+static void inclinenumber(LexState*ls){
+int old=ls->current;
+next(ls);
+if(currIsNewline(ls)&&ls->current!=old)
+next(ls);
+if(++ls->linenumber>=(INT_MAX-2))
+luaX_syntaxerror(ls,"chunk has too many lines");
+}
+static void luaX_setinput(lua_State*L,LexState*ls,ZIO*z,TString*source){
+ls->decpoint='.';
+ls->L=L;
+ls->lookahead.token=TK_EOS;
+ls->z=z;
+ls->fs=NULL;
+ls->linenumber=1;
+ls->lastline=1;
+ls->source=source;
+luaZ_resizebuffer(ls->L,ls->buff,32);
+next(ls);
+}
+static int check_next(LexState*ls,const char*set){
+if(!strchr(set,ls->current))
+return 0;
+save_and_next(ls);
+return 1;
+}
+static void buffreplace(LexState*ls,char from,char to){
+size_t n=luaZ_bufflen(ls->buff);
+char*p=luaZ_buffer(ls->buff);
+while(n--)
+if(p[n]==from)p[n]=to;
+}
+static void read_numeral(LexState*ls,SemInfo*seminfo){
+do{
+save_and_next(ls);
+}while(isdigit(ls->current)||ls->current=='.');
+if(check_next(ls,"Ee"))
+check_next(ls,"+-");
+while(isalnum(ls->current)||ls->current=='_')
+save_and_next(ls);
+save(ls,'\0');
+buffreplace(ls,'.',ls->decpoint);
+if(!luaO_str2d(luaZ_buffer(ls->buff),&seminfo->r))
+luaX_lexerror(ls,"malformed number",TK_NUMBER);
+}
+static int skip_sep(LexState*ls){
+int count=0;
+int s=ls->current;
+save_and_next(ls);
+while(ls->current=='='){
+save_and_next(ls);
+count++;
+}
+return(ls->current==s)?count:(-count)-1;
+}
+static void read_long_string(LexState*ls,SemInfo*seminfo,int sep){
+int cont=0;
+(void)(cont);
+save_and_next(ls);
+if(currIsNewline(ls))
+inclinenumber(ls);
+for(;;){
+switch(ls->current){
+case(-1):
+luaX_lexerror(ls,(seminfo)?"unfinished long string":
+"unfinished long comment",TK_EOS);
+break;
+case']':{
+if(skip_sep(ls)==sep){
+save_and_next(ls);
+goto endloop;
+}
+break;
+}
+case'\n':
+case'\r':{
+save(ls,'\n');
+inclinenumber(ls);
+if(!seminfo)luaZ_resetbuffer(ls->buff);
+break;
+}
+default:{
+if(seminfo)save_and_next(ls);
+else next(ls);
+}
+}
+}endloop:
+if(seminfo)
+seminfo->ts=luaX_newstring(ls,luaZ_buffer(ls->buff)+(2+sep),
+luaZ_bufflen(ls->buff)-2*(2+sep));
+}
+static void read_string(LexState*ls,int del,SemInfo*seminfo){
+save_and_next(ls);
+while(ls->current!=del){
+switch(ls->current){
+case(-1):
+luaX_lexerror(ls,"unfinished string",TK_EOS);
+continue;
+case'\n':
+case'\r':
+luaX_lexerror(ls,"unfinished string",TK_STRING);
+continue;
+case'\\':{
+int c;
+next(ls);
+switch(ls->current){
+case'a':c='\a';break;
+case'b':c='\b';break;
+case'f':c='\f';break;
+case'n':c='\n';break;
+case'r':c='\r';break;
+case't':c='\t';break;
+case'v':c='\v';break;
+case'\n':
+case'\r':save(ls,'\n');inclinenumber(ls);continue;
+case(-1):continue;
+default:{
+if(!isdigit(ls->current))
+save_and_next(ls);
+else{
+int i=0;
+c=0;
+do{
+c=10*c+(ls->current-'0');
+next(ls);
+}while(++i<3&&isdigit(ls->current));
+if(c>UCHAR_MAX)
+luaX_lexerror(ls,"escape sequence too large",TK_STRING);
+save(ls,c);
+}
+continue;
+}
+}
+save(ls,c);
+next(ls);
+continue;
+}
+default:
+save_and_next(ls);
+}
+}
+save_and_next(ls);
+seminfo->ts=luaX_newstring(ls,luaZ_buffer(ls->buff)+1,
+luaZ_bufflen(ls->buff)-2);
+}
+static int llex(LexState*ls,SemInfo*seminfo){
+luaZ_resetbuffer(ls->buff);
+for(;;){
+switch(ls->current){
+case'\n':
+case'\r':{
+inclinenumber(ls);
+continue;
+}
+case'-':{
+next(ls);
+if(ls->current!='-')return'-';
+next(ls);
+if(ls->current=='['){
+int sep=skip_sep(ls);
+luaZ_resetbuffer(ls->buff);
+if(sep>=0){
+read_long_string(ls,NULL,sep);
+luaZ_resetbuffer(ls->buff);
+continue;
+}
+}
+while(!currIsNewline(ls)&&ls->current!=(-1))
+next(ls);
+continue;
+}
+case'[':{
+int sep=skip_sep(ls);
+if(sep>=0){
+read_long_string(ls,seminfo,sep);
+return TK_STRING;
+}
+else if (sep!=-1)luaX_lexerror(ls,"invalid long string delimiter",TK_STRING);
+return'[';
+}
+case'=':{
+next(ls);
+if(ls->current!='=')return'=';
+else{next(ls);return TK_EQ;}
+}
+case'<':{
+next(ls);
+if(ls->current!='=')return'<';
+else{next(ls);return TK_LE;}
+}
+case'>':{
+next(ls);
+if(ls->current!='=')return'>';
+else{next(ls);return TK_GE;}
+}
+case'~':{
+next(ls);
+if(ls->current!='=')return'~';
+else{next(ls);return TK_NE;}
+}
+case'"':
+case'\'':{
+read_string(ls,ls->current,seminfo);
+return TK_STRING;
+}
+case'.':{
+save_and_next(ls);
+if(check_next(ls,".")){
+if(check_next(ls,"."))
+return TK_DOTS;
+else return TK_CONCAT;
+}
+else if(!isdigit(ls->current))return'.';
+else{
+read_numeral(ls,seminfo);
+return TK_NUMBER;
+}
+}
+case(-1):{
+return TK_EOS;
+}
+default:{
+if(isspace(ls->current)){
+next(ls);
+continue;
+}
+else if(isdigit(ls->current)){
+read_numeral(ls,seminfo);
+return TK_NUMBER;
+}
+else if(isalpha(ls->current)||ls->current=='_'){
+TString*ts;
+do{
+save_and_next(ls);
+}while(isalnum(ls->current)||ls->current=='_');
+ts=luaX_newstring(ls,luaZ_buffer(ls->buff),
+luaZ_bufflen(ls->buff));
+if(ts->tsv.reserved>0)
+return ts->tsv.reserved-1+257;
+else{
+seminfo->ts=ts;
+return TK_NAME;
+}
+}
+else{
+int c=ls->current;
+next(ls);
+return c;
+}
+}
+}
+}
+}
+static void luaX_next(LexState*ls){
+ls->lastline=ls->linenumber;
+if(ls->lookahead.token!=TK_EOS){
+ls->t=ls->lookahead;
+ls->lookahead.token=TK_EOS;
+}
+else
+ls->t.token=llex(ls,&ls->t.seminfo);
+}
+static void luaX_lookahead(LexState*ls){
+ls->lookahead.token=llex(ls,&ls->lookahead.seminfo);
+}
+#define hasjumps(e)((e)->t!=(e)->f)
+static int isnumeral(expdesc*e){
+return(e->k==VKNUM&&e->t==(-1)&&e->f==(-1));
+}
+static void luaK_nil(FuncState*fs,int from,int n){
+Instruction*previous;
+if(fs->pc>fs->lasttarget){
+if(fs->pc==0){
+if(from>=fs->nactvar)
+return;
+}
+else{
+previous=&fs->f->code[fs->pc-1];
+if(GET_OPCODE(*previous)==OP_LOADNIL){
+int pfrom=GETARG_A(*previous);
+int pto=GETARG_B(*previous);
+if(pfrom<=from&&from<=pto+1){
+if(from+n-1>pto)
+SETARG_B(*previous,from+n-1);
+return;
+}
+}
+}
+}
+luaK_codeABC(fs,OP_LOADNIL,from,from+n-1,0);
+}
+static int luaK_jump(FuncState*fs){
+int jpc=fs->jpc;
+int j;
+fs->jpc=(-1);
+j=luaK_codeAsBx(fs,OP_JMP,0,(-1));
+luaK_concat(fs,&j,jpc);
+return j;
+}
+static void luaK_ret(FuncState*fs,int first,int nret){
+luaK_codeABC(fs,OP_RETURN,first,nret+1,0);
+}
+static int condjump(FuncState*fs,OpCode op,int A,int B,int C){
+luaK_codeABC(fs,op,A,B,C);
+return luaK_jump(fs);
+}
+static void fixjump(FuncState*fs,int pc,int dest){
+Instruction*jmp=&fs->f->code[pc];
+int offset=dest-(pc+1);
+if(abs(offset)>(((1<<(9+9))-1)>>1))
+luaX_syntaxerror(fs->ls,"control structure too long");
+SETARG_sBx(*jmp,offset);
+}
+static int luaK_getlabel(FuncState*fs){
+fs->lasttarget=fs->pc;
+return fs->pc;
+}
+static int getjump(FuncState*fs,int pc){
+int offset=GETARG_sBx(fs->f->code[pc]);
+if(offset==(-1))
+return(-1);
+else
+return(pc+1)+offset;
+}
+static Instruction*getjumpcontrol(FuncState*fs,int pc){
+Instruction*pi=&fs->f->code[pc];
+if(pc>=1&&testTMode(GET_OPCODE(*(pi-1))))
+return pi-1;
+else
+return pi;
+}
+static int need_value(FuncState*fs,int list){
+for(;list!=(-1);list=getjump(fs,list)){
+Instruction i=*getjumpcontrol(fs,list);
+if(GET_OPCODE(i)!=OP_TESTSET)return 1;
+}
+return 0;
+}
+static int patchtestreg(FuncState*fs,int node,int reg){
+Instruction*i=getjumpcontrol(fs,node);
+if(GET_OPCODE(*i)!=OP_TESTSET)
+return 0;
+if(reg!=((1<<8)-1)&&reg!=GETARG_B(*i))
+SETARG_A(*i,reg);
+else
+*i=CREATE_ABC(OP_TEST,GETARG_B(*i),0,GETARG_C(*i));
+return 1;
+}
+static void removevalues(FuncState*fs,int list){
+for(;list!=(-1);list=getjump(fs,list))
+patchtestreg(fs,list,((1<<8)-1));
+}
+static void patchlistaux(FuncState*fs,int list,int vtarget,int reg,
+int dtarget){
+while(list!=(-1)){
+int next=getjump(fs,list);
+if(patchtestreg(fs,list,reg))
+fixjump(fs,list,vtarget);
+else
+fixjump(fs,list,dtarget);
+list=next;
+}
+}
+static void dischargejpc(FuncState*fs){
+patchlistaux(fs,fs->jpc,fs->pc,((1<<8)-1),fs->pc);
+fs->jpc=(-1);
+}
+static void luaK_patchlist(FuncState*fs,int list,int target){
+if(target==fs->pc)
+luaK_patchtohere(fs,list);
+else{
+patchlistaux(fs,list,target,((1<<8)-1),target);
+}
+}
+static void luaK_patchtohere(FuncState*fs,int list){
+luaK_getlabel(fs);
+luaK_concat(fs,&fs->jpc,list);
+}
+static void luaK_concat(FuncState*fs,int*l1,int l2){
+if(l2==(-1))return;
+else if(*l1==(-1))
+*l1=l2;
+else{
+int list=*l1;
+int next;
+while((next=getjump(fs,list))!=(-1))
+list=next;
+fixjump(fs,list,l2);
+}
+}
+static void luaK_checkstack(FuncState*fs,int n){
+int newstack=fs->freereg+n;
+if(newstack>fs->f->maxstacksize){
+if(newstack>=250)
+luaX_syntaxerror(fs->ls,"function or expression too complex");
+fs->f->maxstacksize=cast_byte(newstack);
+}
+}
+static void luaK_reserveregs(FuncState*fs,int n){
+luaK_checkstack(fs,n);
+fs->freereg+=n;
+}
+static void freereg(FuncState*fs,int reg){
+if(!ISK(reg)&&reg>=fs->nactvar){
+fs->freereg--;
+}
+}
+static void freeexp(FuncState*fs,expdesc*e){
+if(e->k==VNONRELOC)
+freereg(fs,e->u.s.info);
+}
+static int addk(FuncState*fs,TValue*k,TValue*v){
+lua_State*L=fs->L;
+TValue*idx=luaH_set(L,fs->h,k);
+Proto*f=fs->f;
+int oldsize=f->sizek;
+if(ttisnumber(idx)){
+return cast_int(nvalue(idx));
+}
+else{
+setnvalue(idx,cast_num(fs->nk));
+luaM_growvector(L,f->k,fs->nk,f->sizek,TValue,
+((1<<(9+9))-1),"constant table overflow");
+while(oldsize<f->sizek)setnilvalue(&f->k[oldsize++]);
+setobj(L,&f->k[fs->nk],v);
+luaC_barrier(L,f,v);
+return fs->nk++;
+}
+}
+static int luaK_stringK(FuncState*fs,TString*s){
+TValue o;
+setsvalue(fs->L,&o,s);
+return addk(fs,&o,&o);
+}
+static int luaK_numberK(FuncState*fs,lua_Number r){
+TValue o;
+setnvalue(&o,r);
+return addk(fs,&o,&o);
+}
+static int boolK(FuncState*fs,int b){
+TValue o;
+setbvalue(&o,b);
+return addk(fs,&o,&o);
+}
+static int nilK(FuncState*fs){
+TValue k,v;
+setnilvalue(&v);
+sethvalue(fs->L,&k,fs->h);
+return addk(fs,&k,&v);
+}
+static void luaK_setreturns(FuncState*fs,expdesc*e,int nresults){
+if(e->k==VCALL){
+SETARG_C(getcode(fs,e),nresults+1);
+}
+else if(e->k==VVARARG){
+SETARG_B(getcode(fs,e),nresults+1);
+SETARG_A(getcode(fs,e),fs->freereg);
+luaK_reserveregs(fs,1);
+}
+}
+static void luaK_setoneret(FuncState*fs,expdesc*e){
+if(e->k==VCALL){
+e->k=VNONRELOC;
+e->u.s.info=GETARG_A(getcode(fs,e));
+}
+else if(e->k==VVARARG){
+SETARG_B(getcode(fs,e),2);
+e->k=VRELOCABLE;
+}
+}
+static void luaK_dischargevars(FuncState*fs,expdesc*e){
+switch(e->k){
+case VLOCAL:{
+e->k=VNONRELOC;
+break;
+}
+case VUPVAL:{
+e->u.s.info=luaK_codeABC(fs,OP_GETUPVAL,0,e->u.s.info,0);
+e->k=VRELOCABLE;
+break;
+}
+case VGLOBAL:{
+e->u.s.info=luaK_codeABx(fs,OP_GETGLOBAL,0,e->u.s.info);
+e->k=VRELOCABLE;
+break;
+}
+case VINDEXED:{
+freereg(fs,e->u.s.aux);
+freereg(fs,e->u.s.info);
+e->u.s.info=luaK_codeABC(fs,OP_GETTABLE,0,e->u.s.info,e->u.s.aux);
+e->k=VRELOCABLE;
+break;
+}
+case VVARARG:
+case VCALL:{
+luaK_setoneret(fs,e);
+break;
+}
+default:break;
+}
+}
+static int code_label(FuncState*fs,int A,int b,int jump){
+luaK_getlabel(fs);
+return luaK_codeABC(fs,OP_LOADBOOL,A,b,jump);
+}
+static void discharge2reg(FuncState*fs,expdesc*e,int reg){
+luaK_dischargevars(fs,e);
+switch(e->k){
+case VNIL:{
+luaK_nil(fs,reg,1);
+break;
+}
+case VFALSE:case VTRUE:{
+luaK_codeABC(fs,OP_LOADBOOL,reg,e->k==VTRUE,0);
+break;
+}
+case VK:{
+luaK_codeABx(fs,OP_LOADK,reg,e->u.s.info);
+break;
+}
+case VKNUM:{
+luaK_codeABx(fs,OP_LOADK,reg,luaK_numberK(fs,e->u.nval));
+break;
+}
+case VRELOCABLE:{
+Instruction*pc=&getcode(fs,e);
+SETARG_A(*pc,reg);
+break;
+}
+case VNONRELOC:{
+if(reg!=e->u.s.info)
+luaK_codeABC(fs,OP_MOVE,reg,e->u.s.info,0);
+break;
+}
+default:{
+return;
+}
+}
+e->u.s.info=reg;
+e->k=VNONRELOC;
+}
+static void discharge2anyreg(FuncState*fs,expdesc*e){
+if(e->k!=VNONRELOC){
+luaK_reserveregs(fs,1);
+discharge2reg(fs,e,fs->freereg-1);
+}
+}
+static void exp2reg(FuncState*fs,expdesc*e,int reg){
+discharge2reg(fs,e,reg);
+if(e->k==VJMP)
+luaK_concat(fs,&e->t,e->u.s.info);
+if(hasjumps(e)){
+int final;
+int p_f=(-1);
+int p_t=(-1);
+if(need_value(fs,e->t)||need_value(fs,e->f)){
+int fj=(e->k==VJMP)?(-1):luaK_jump(fs);
+p_f=code_label(fs,reg,0,1);
+p_t=code_label(fs,reg,1,0);
+luaK_patchtohere(fs,fj);
+}
+final=luaK_getlabel(fs);
+patchlistaux(fs,e->f,final,reg,p_f);
+patchlistaux(fs,e->t,final,reg,p_t);
+}
+e->f=e->t=(-1);
+e->u.s.info=reg;
+e->k=VNONRELOC;
+}
+static void luaK_exp2nextreg(FuncState*fs,expdesc*e){
+luaK_dischargevars(fs,e);
+freeexp(fs,e);
+luaK_reserveregs(fs,1);
+exp2reg(fs,e,fs->freereg-1);
+}
+static int luaK_exp2anyreg(FuncState*fs,expdesc*e){
+luaK_dischargevars(fs,e);
+if(e->k==VNONRELOC){
+if(!hasjumps(e))return e->u.s.info;
+if(e->u.s.info>=fs->nactvar){
+exp2reg(fs,e,e->u.s.info);
+return e->u.s.info;
+}
+}
+luaK_exp2nextreg(fs,e);
+return e->u.s.info;
+}
+static void luaK_exp2val(FuncState*fs,expdesc*e){
+if(hasjumps(e))
+luaK_exp2anyreg(fs,e);
+else
+luaK_dischargevars(fs,e);
+}
+static int luaK_exp2RK(FuncState*fs,expdesc*e){
+luaK_exp2val(fs,e);
+switch(e->k){
+case VKNUM:
+case VTRUE:
+case VFALSE:
+case VNIL:{
+if(fs->nk<=((1<<(9-1))-1)){
+e->u.s.info=(e->k==VNIL)?nilK(fs):
+(e->k==VKNUM)?luaK_numberK(fs,e->u.nval):
+boolK(fs,(e->k==VTRUE));
+e->k=VK;
+return RKASK(e->u.s.info);
+}
+else break;
+}
+case VK:{
+if(e->u.s.info<=((1<<(9-1))-1))
+return RKASK(e->u.s.info);
+else break;
+}
+default:break;
+}
+return luaK_exp2anyreg(fs,e);
+}
+static void luaK_storevar(FuncState*fs,expdesc*var,expdesc*ex){
+switch(var->k){
+case VLOCAL:{
+freeexp(fs,ex);
+exp2reg(fs,ex,var->u.s.info);
+return;
+}
+case VUPVAL:{
+int e=luaK_exp2anyreg(fs,ex);
+luaK_codeABC(fs,OP_SETUPVAL,e,var->u.s.info,0);
+break;
+}
+case VGLOBAL:{
+int e=luaK_exp2anyreg(fs,ex);
+luaK_codeABx(fs,OP_SETGLOBAL,e,var->u.s.info);
+break;
+}
+case VINDEXED:{
+int e=luaK_exp2RK(fs,ex);
+luaK_codeABC(fs,OP_SETTABLE,var->u.s.info,var->u.s.aux,e);
+break;
+}
+default:{
+break;
+}
+}
+freeexp(fs,ex);
+}
+static void luaK_self(FuncState*fs,expdesc*e,expdesc*key){
+int func;
+luaK_exp2anyreg(fs,e);
+freeexp(fs,e);
+func=fs->freereg;
+luaK_reserveregs(fs,2);
+luaK_codeABC(fs,OP_SELF,func,e->u.s.info,luaK_exp2RK(fs,key));
+freeexp(fs,key);
+e->u.s.info=func;
+e->k=VNONRELOC;
+}
+static void invertjump(FuncState*fs,expdesc*e){
+Instruction*pc=getjumpcontrol(fs,e->u.s.info);
+SETARG_A(*pc,!(GETARG_A(*pc)));
+}
+static int jumponcond(FuncState*fs,expdesc*e,int cond){
+if(e->k==VRELOCABLE){
+Instruction ie=getcode(fs,e);
+if(GET_OPCODE(ie)==OP_NOT){
+fs->pc--;
+return condjump(fs,OP_TEST,GETARG_B(ie),0,!cond);
+}
+}
+discharge2anyreg(fs,e);
+freeexp(fs,e);
+return condjump(fs,OP_TESTSET,((1<<8)-1),e->u.s.info,cond);
+}
+static void luaK_goiftrue(FuncState*fs,expdesc*e){
+int pc;
+luaK_dischargevars(fs,e);
+switch(e->k){
+case VK:case VKNUM:case VTRUE:{
+pc=(-1);
+break;
+}
+case VJMP:{
+invertjump(fs,e);
+pc=e->u.s.info;
+break;
+}
+default:{
+pc=jumponcond(fs,e,0);
+break;
+}
+}
+luaK_concat(fs,&e->f,pc);
+luaK_patchtohere(fs,e->t);
+e->t=(-1);
+}
+static void luaK_goiffalse(FuncState*fs,expdesc*e){
+int pc;
+luaK_dischargevars(fs,e);
+switch(e->k){
+case VNIL:case VFALSE:{
+pc=(-1);
+break;
+}
+case VJMP:{
+pc=e->u.s.info;
+break;
+}
+default:{
+pc=jumponcond(fs,e,1);
+break;
+}
+}
+luaK_concat(fs,&e->t,pc);
+luaK_patchtohere(fs,e->f);
+e->f=(-1);
+}
+static void codenot(FuncState*fs,expdesc*e){
+luaK_dischargevars(fs,e);
+switch(e->k){
+case VNIL:case VFALSE:{
+e->k=VTRUE;
+break;
+}
+case VK:case VKNUM:case VTRUE:{
+e->k=VFALSE;
+break;
+}
+case VJMP:{
+invertjump(fs,e);
+break;
+}
+case VRELOCABLE:
+case VNONRELOC:{
+discharge2anyreg(fs,e);
+freeexp(fs,e);
+e->u.s.info=luaK_codeABC(fs,OP_NOT,0,e->u.s.info,0);
+e->k=VRELOCABLE;
+break;
+}
+default:{
+break;
+}
+}
+{int temp=e->f;e->f=e->t;e->t=temp;}
+removevalues(fs,e->f);
+removevalues(fs,e->t);
+}
+static void luaK_indexed(FuncState*fs,expdesc*t,expdesc*k){
+t->u.s.aux=luaK_exp2RK(fs,k);
+t->k=VINDEXED;
+}
+static int constfolding(OpCode op,expdesc*e1,expdesc*e2){
+lua_Number v1,v2,r;
+if(!isnumeral(e1)||!isnumeral(e2))return 0;
+v1=e1->u.nval;
+v2=e2->u.nval;
+switch(op){
+case OP_ADD:r=luai_numadd(v1,v2);break;
+case OP_SUB:r=luai_numsub(v1,v2);break;
+case OP_MUL:r=luai_nummul(v1,v2);break;
+case OP_DIV:
+if(v2==0)return 0;
+r=luai_numdiv(v1,v2);break;
+case OP_MOD:
+if(v2==0)return 0;
+r=luai_nummod(v1,v2);break;
+case OP_POW:r=luai_numpow(v1,v2);break;
+case OP_UNM:r=luai_numunm(v1);break;
+case OP_LEN:return 0;
+default:r=0;break;
+}
+if(luai_numisnan(r))return 0;
+e1->u.nval=r;
+return 1;
+}
+static void codearith(FuncState*fs,OpCode op,expdesc*e1,expdesc*e2){
+if(constfolding(op,e1,e2))
+return;
+else{
+int o2=(op!=OP_UNM&&op!=OP_LEN)?luaK_exp2RK(fs,e2):0;
+int o1=luaK_exp2RK(fs,e1);
+if(o1>o2){
+freeexp(fs,e1);
+freeexp(fs,e2);
+}
+else{
+freeexp(fs,e2);
+freeexp(fs,e1);
+}
+e1->u.s.info=luaK_codeABC(fs,op,0,o1,o2);
+e1->k=VRELOCABLE;
+}
+}
+static void codecomp(FuncState*fs,OpCode op,int cond,expdesc*e1,
+expdesc*e2){
+int o1=luaK_exp2RK(fs,e1);
+int o2=luaK_exp2RK(fs,e2);
+freeexp(fs,e2);
+freeexp(fs,e1);
+if(cond==0&&op!=OP_EQ){
+int temp;
+temp=o1;o1=o2;o2=temp;
+cond=1;
+}
+e1->u.s.info=condjump(fs,op,cond,o1,o2);
+e1->k=VJMP;
+}
+static void luaK_prefix(FuncState*fs,UnOpr op,expdesc*e){
+expdesc e2;
+e2.t=e2.f=(-1);e2.k=VKNUM;e2.u.nval=0;
+switch(op){
+case OPR_MINUS:{
+if(!isnumeral(e))
+luaK_exp2anyreg(fs,e);
+codearith(fs,OP_UNM,e,&e2);
+break;
+}
+case OPR_NOT:codenot(fs,e);break;
+case OPR_LEN:{
+luaK_exp2anyreg(fs,e);
+codearith(fs,OP_LEN,e,&e2);
+break;
+}
+default:;
+}
+}
+static void luaK_infix(FuncState*fs,BinOpr op,expdesc*v){
+switch(op){
+case OPR_AND:{
+luaK_goiftrue(fs,v);
+break;
+}
+case OPR_OR:{
+luaK_goiffalse(fs,v);
+break;
+}
+case OPR_CONCAT:{
+luaK_exp2nextreg(fs,v);
+break;
+}
+case OPR_ADD:case OPR_SUB:case OPR_MUL:case OPR_DIV:
+case OPR_MOD:case OPR_POW:{
+if(!isnumeral(v))luaK_exp2RK(fs,v);
+break;
+}
+default:{
+luaK_exp2RK(fs,v);
+break;
+}
+}
+}
+static void luaK_posfix(FuncState*fs,BinOpr op,expdesc*e1,expdesc*e2){
+switch(op){
+case OPR_AND:{
+luaK_dischargevars(fs,e2);
+luaK_concat(fs,&e2->f,e1->f);
+*e1=*e2;
+break;
+}
+case OPR_OR:{
+luaK_dischargevars(fs,e2);
+luaK_concat(fs,&e2->t,e1->t);
+*e1=*e2;
+break;
+}
+case OPR_CONCAT:{
+luaK_exp2val(fs,e2);
+if(e2->k==VRELOCABLE&&GET_OPCODE(getcode(fs,e2))==OP_CONCAT){
+freeexp(fs,e1);
+SETARG_B(getcode(fs,e2),e1->u.s.info);
+e1->k=VRELOCABLE;e1->u.s.info=e2->u.s.info;
+}
+else{
+luaK_exp2nextreg(fs,e2);
+codearith(fs,OP_CONCAT,e1,e2);
+}
+break;
+}
+case OPR_ADD:codearith(fs,OP_ADD,e1,e2);break;
+case OPR_SUB:codearith(fs,OP_SUB,e1,e2);break;
+case OPR_MUL:codearith(fs,OP_MUL,e1,e2);break;
+case OPR_DIV:codearith(fs,OP_DIV,e1,e2);break;
+case OPR_MOD:codearith(fs,OP_MOD,e1,e2);break;
+case OPR_POW:codearith(fs,OP_POW,e1,e2);break;
+case OPR_EQ:codecomp(fs,OP_EQ,1,e1,e2);break;
+case OPR_NE:codecomp(fs,OP_EQ,0,e1,e2);break;
+case OPR_LT:codecomp(fs,OP_LT,1,e1,e2);break;
+case OPR_LE:codecomp(fs,OP_LE,1,e1,e2);break;
+case OPR_GT:codecomp(fs,OP_LT,0,e1,e2);break;
+case OPR_GE:codecomp(fs,OP_LE,0,e1,e2);break;
+default:;
+}
+}
+static void luaK_fixline(FuncState*fs,int line){
+fs->f->lineinfo[fs->pc-1]=line;
+}
+static int luaK_code(FuncState*fs,Instruction i,int line){
+Proto*f=fs->f;
+dischargejpc(fs);
+luaM_growvector(fs->L,f->code,fs->pc,f->sizecode,Instruction,
+(INT_MAX-2),"code size overflow");
+f->code[fs->pc]=i;
+luaM_growvector(fs->L,f->lineinfo,fs->pc,f->sizelineinfo,int,
+(INT_MAX-2),"code size overflow");
+f->lineinfo[fs->pc]=line;
+return fs->pc++;
+}
+static int luaK_codeABC(FuncState*fs,OpCode o,int a,int b,int c){
+return luaK_code(fs,CREATE_ABC(o,a,b,c),fs->ls->lastline);
+}
+static int luaK_codeABx(FuncState*fs,OpCode o,int a,unsigned int bc){
+return luaK_code(fs,CREATE_ABx(o,a,bc),fs->ls->lastline);
+}
+static void luaK_setlist(FuncState*fs,int base,int nelems,int tostore){
+int c=(nelems-1)/50+1;
+int b=(tostore==(-1))?0:tostore;
+if(c<=((1<<9)-1))
+luaK_codeABC(fs,OP_SETLIST,base,b,c);
+else{
+luaK_codeABC(fs,OP_SETLIST,base,b,0);
+luaK_code(fs,cast(Instruction,c),fs->ls->lastline);
+}
+fs->freereg=base+1;
+}
+#define hasmultret(k)((k)==VCALL||(k)==VVARARG)
+#define getlocvar(fs,i)((fs)->f->locvars[(fs)->actvar[i]])
+#define luaY_checklimit(fs,v,l,m)if((v)>(l))errorlimit(fs,l,m)
+typedef struct BlockCnt{
+struct BlockCnt*previous;
+int breaklist;
+lu_byte nactvar;
+lu_byte upval;
+lu_byte isbreakable;
+}BlockCnt;
+static void chunk(LexState*ls);
+static void expr(LexState*ls,expdesc*v);
+static void anchor_token(LexState*ls){
+if(ls->t.token==TK_NAME||ls->t.token==TK_STRING){
+TString*ts=ls->t.seminfo.ts;
+luaX_newstring(ls,getstr(ts),ts->tsv.len);
+}
+}
+static void error_expected(LexState*ls,int token){
+luaX_syntaxerror(ls,
+luaO_pushfstring(ls->L,LUA_QL("%s")" expected",luaX_token2str(ls,token)));
+}
+static void errorlimit(FuncState*fs,int limit,const char*what){
+const char*msg=(fs->f->linedefined==0)?
+luaO_pushfstring(fs->L,"main function has more than %d %s",limit,what):
+luaO_pushfstring(fs->L,"function at line %d has more than %d %s",
+fs->f->linedefined,limit,what);
+luaX_lexerror(fs->ls,msg,0);
+}
+static int testnext(LexState*ls,int c){
+if(ls->t.token==c){
+luaX_next(ls);
+return 1;
+}
+else return 0;
+}
+static void check(LexState*ls,int c){
+if(ls->t.token!=c)
+error_expected(ls,c);
+}
+static void checknext(LexState*ls,int c){
+check(ls,c);
+luaX_next(ls);
+}
+#define check_condition(ls,c,msg){if(!(c))luaX_syntaxerror(ls,msg);}
+static void check_match(LexState*ls,int what,int who,int where){
+if(!testnext(ls,what)){
+if(where==ls->linenumber)
+error_expected(ls,what);
+else{
+luaX_syntaxerror(ls,luaO_pushfstring(ls->L,
+LUA_QL("%s")" expected (to close "LUA_QL("%s")" at line %d)",
+luaX_token2str(ls,what),luaX_token2str(ls,who),where));
+}
+}
+}
+static TString*str_checkname(LexState*ls){
+TString*ts;
+check(ls,TK_NAME);
+ts=ls->t.seminfo.ts;
+luaX_next(ls);
+return ts;
+}
+static void init_exp(expdesc*e,expkind k,int i){
+e->f=e->t=(-1);
+e->k=k;
+e->u.s.info=i;
+}
+static void codestring(LexState*ls,expdesc*e,TString*s){
+init_exp(e,VK,luaK_stringK(ls->fs,s));
+}
+static void checkname(LexState*ls,expdesc*e){
+codestring(ls,e,str_checkname(ls));
+}
+static int registerlocalvar(LexState*ls,TString*varname){
+FuncState*fs=ls->fs;
+Proto*f=fs->f;
+int oldsize=f->sizelocvars;
+luaM_growvector(ls->L,f->locvars,fs->nlocvars,f->sizelocvars,
+LocVar,SHRT_MAX,"too many local variables");
+while(oldsize<f->sizelocvars)f->locvars[oldsize++].varname=NULL;
+f->locvars[fs->nlocvars].varname=varname;
+luaC_objbarrier(ls->L,f,varname);
+return fs->nlocvars++;
+}
+#define new_localvarliteral(ls,v,n)new_localvar(ls,luaX_newstring(ls,""v,(sizeof(v)/sizeof(char))-1),n)
+static void new_localvar(LexState*ls,TString*name,int n){
+FuncState*fs=ls->fs;
+luaY_checklimit(fs,fs->nactvar+n+1,200,"local variables");
+fs->actvar[fs->nactvar+n]=cast(unsigned short,registerlocalvar(ls,name));
+}
+static void adjustlocalvars(LexState*ls,int nvars){
+FuncState*fs=ls->fs;
+fs->nactvar=cast_byte(fs->nactvar+nvars);
+for(;nvars;nvars--){
+getlocvar(fs,fs->nactvar-nvars).startpc=fs->pc;
+}
+}
+static void removevars(LexState*ls,int tolevel){
+FuncState*fs=ls->fs;
+while(fs->nactvar>tolevel)
+getlocvar(fs,--fs->nactvar).endpc=fs->pc;
+}
+static int indexupvalue(FuncState*fs,TString*name,expdesc*v){
+int i;
+Proto*f=fs->f;
+int oldsize=f->sizeupvalues;
+for(i=0;i<f->nups;i++){
+if(fs->upvalues[i].k==v->k&&fs->upvalues[i].info==v->u.s.info){
+return i;
+}
+}
+luaY_checklimit(fs,f->nups+1,60,"upvalues");
+luaM_growvector(fs->L,f->upvalues,f->nups,f->sizeupvalues,
+TString*,(INT_MAX-2),"");
+while(oldsize<f->sizeupvalues)f->upvalues[oldsize++]=NULL;
+f->upvalues[f->nups]=name;
+luaC_objbarrier(fs->L,f,name);
+fs->upvalues[f->nups].k=cast_byte(v->k);
+fs->upvalues[f->nups].info=cast_byte(v->u.s.info);
+return f->nups++;
+}
+static int searchvar(FuncState*fs,TString*n){
+int i;
+for(i=fs->nactvar-1;i>=0;i--){
+if(n==getlocvar(fs,i).varname)
+return i;
+}
+return-1;
+}
+static void markupval(FuncState*fs,int level){
+BlockCnt*bl=fs->bl;
+while(bl&&bl->nactvar>level)bl=bl->previous;
+if(bl)bl->upval=1;
+}
+static int singlevaraux(FuncState*fs,TString*n,expdesc*var,int base){
+if(fs==NULL){
+init_exp(var,VGLOBAL,((1<<8)-1));
+return VGLOBAL;
+}
+else{
+int v=searchvar(fs,n);
+if(v>=0){
+init_exp(var,VLOCAL,v);
+if(!base)
+markupval(fs,v);
+return VLOCAL;
+}
+else{
+if(singlevaraux(fs->prev,n,var,0)==VGLOBAL)
+return VGLOBAL;
+var->u.s.info=indexupvalue(fs,n,var);
+var->k=VUPVAL;
+return VUPVAL;
+}
+}
+}
+static void singlevar(LexState*ls,expdesc*var){
+TString*varname=str_checkname(ls);
+FuncState*fs=ls->fs;
+if(singlevaraux(fs,varname,var,1)==VGLOBAL)
+var->u.s.info=luaK_stringK(fs,varname);
+}
+static void adjust_assign(LexState*ls,int nvars,int nexps,expdesc*e){
+FuncState*fs=ls->fs;
+int extra=nvars-nexps;
+if(hasmultret(e->k)){
+extra++;
+if(extra<0)extra=0;
+luaK_setreturns(fs,e,extra);
+if(extra>1)luaK_reserveregs(fs,extra-1);
+}
+else{
+if(e->k!=VVOID)luaK_exp2nextreg(fs,e);
+if(extra>0){
+int reg=fs->freereg;
+luaK_reserveregs(fs,extra);
+luaK_nil(fs,reg,extra);
+}
+}
+}
+static void enterlevel(LexState*ls){
+if(++ls->L->nCcalls>200)
+luaX_lexerror(ls,"chunk has too many syntax levels",0);
+}
+#define leavelevel(ls)((ls)->L->nCcalls--)
+static void enterblock(FuncState*fs,BlockCnt*bl,lu_byte isbreakable){
+bl->breaklist=(-1);
+bl->isbreakable=isbreakable;
+bl->nactvar=fs->nactvar;
+bl->upval=0;
+bl->previous=fs->bl;
+fs->bl=bl;
+}
+static void leaveblock(FuncState*fs){
+BlockCnt*bl=fs->bl;
+fs->bl=bl->previous;
+removevars(fs->ls,bl->nactvar);
+if(bl->upval)
+luaK_codeABC(fs,OP_CLOSE,bl->nactvar,0,0);
+fs->freereg=fs->nactvar;
+luaK_patchtohere(fs,bl->breaklist);
+}
+static void pushclosure(LexState*ls,FuncState*func,expdesc*v){
+FuncState*fs=ls->fs;
+Proto*f=fs->f;
+int oldsize=f->sizep;
+int i;
+luaM_growvector(ls->L,f->p,fs->np,f->sizep,Proto*,
+((1<<(9+9))-1),"constant table overflow");
+while(oldsize<f->sizep)f->p[oldsize++]=NULL;
+f->p[fs->np++]=func->f;
+luaC_objbarrier(ls->L,f,func->f);
+init_exp(v,VRELOCABLE,luaK_codeABx(fs,OP_CLOSURE,0,fs->np-1));
+for(i=0;i<func->f->nups;i++){
+OpCode o=(func->upvalues[i].k==VLOCAL)?OP_MOVE:OP_GETUPVAL;
+luaK_codeABC(fs,o,0,func->upvalues[i].info,0);
+}
+}
+static void open_func(LexState*ls,FuncState*fs){
+lua_State*L=ls->L;
+Proto*f=luaF_newproto(L);
+fs->f=f;
+fs->prev=ls->fs;
+fs->ls=ls;
+fs->L=L;
+ls->fs=fs;
+fs->pc=0;
+fs->lasttarget=-1;
+fs->jpc=(-1);
+fs->freereg=0;
+fs->nk=0;
+fs->np=0;
+fs->nlocvars=0;
+fs->nactvar=0;
+fs->bl=NULL;
+f->source=ls->source;
+f->maxstacksize=2;
+fs->h=luaH_new(L,0,0);
+sethvalue(L,L->top,fs->h);
+incr_top(L);
+setptvalue(L,L->top,f);
+incr_top(L);
+}
+static void close_func(LexState*ls){
+lua_State*L=ls->L;
+FuncState*fs=ls->fs;
+Proto*f=fs->f;
+removevars(ls,0);
+luaK_ret(fs,0,0);
+luaM_reallocvector(L,f->code,f->sizecode,fs->pc,Instruction);
+f->sizecode=fs->pc;
+luaM_reallocvector(L,f->lineinfo,f->sizelineinfo,fs->pc,int);
+f->sizelineinfo=fs->pc;
+luaM_reallocvector(L,f->k,f->sizek,fs->nk,TValue);
+f->sizek=fs->nk;
+luaM_reallocvector(L,f->p,f->sizep,fs->np,Proto*);
+f->sizep=fs->np;
+luaM_reallocvector(L,f->locvars,f->sizelocvars,fs->nlocvars,LocVar);
+f->sizelocvars=fs->nlocvars;
+luaM_reallocvector(L,f->upvalues,f->sizeupvalues,f->nups,TString*);
+f->sizeupvalues=f->nups;
+ls->fs=fs->prev;
+if(fs)anchor_token(ls);
+L->top-=2;
+}
+static Proto*luaY_parser(lua_State*L,ZIO*z,Mbuffer*buff,const char*name){
+struct LexState lexstate;
+struct FuncState funcstate;
+lexstate.buff=buff;
+luaX_setinput(L,&lexstate,z,luaS_new(L,name));
+open_func(&lexstate,&funcstate);
+funcstate.f->is_vararg=2;
+luaX_next(&lexstate);
+chunk(&lexstate);
+check(&lexstate,TK_EOS);
+close_func(&lexstate);
+return funcstate.f;
+}
+static void field(LexState*ls,expdesc*v){
+FuncState*fs=ls->fs;
+expdesc key;
+luaK_exp2anyreg(fs,v);
+luaX_next(ls);
+checkname(ls,&key);
+luaK_indexed(fs,v,&key);
+}
+static void yindex(LexState*ls,expdesc*v){
+luaX_next(ls);
+expr(ls,v);
+luaK_exp2val(ls->fs,v);
+checknext(ls,']');
+}
+struct ConsControl{
+expdesc v;
+expdesc*t;
+int nh;
+int na;
+int tostore;
+};
+static void recfield(LexState*ls,struct ConsControl*cc){
+FuncState*fs=ls->fs;
+int reg=ls->fs->freereg;
+expdesc key,val;
+int rkkey;
+if(ls->t.token==TK_NAME){
+luaY_checklimit(fs,cc->nh,(INT_MAX-2),"items in a constructor");
+checkname(ls,&key);
+}
+else
+yindex(ls,&key);
+cc->nh++;
+checknext(ls,'=');
+rkkey=luaK_exp2RK(fs,&key);
+expr(ls,&val);
+luaK_codeABC(fs,OP_SETTABLE,cc->t->u.s.info,rkkey,luaK_exp2RK(fs,&val));
+fs->freereg=reg;
+}
+static void closelistfield(FuncState*fs,struct ConsControl*cc){
+if(cc->v.k==VVOID)return;
+luaK_exp2nextreg(fs,&cc->v);
+cc->v.k=VVOID;
+if(cc->tostore==50){
+luaK_setlist(fs,cc->t->u.s.info,cc->na,cc->tostore);
+cc->tostore=0;
+}
+}
+static void lastlistfield(FuncState*fs,struct ConsControl*cc){
+if(cc->tostore==0)return;
+if(hasmultret(cc->v.k)){
+luaK_setmultret(fs,&cc->v);
+luaK_setlist(fs,cc->t->u.s.info,cc->na,(-1));
+cc->na--;
+}
+else{
+if(cc->v.k!=VVOID)
+luaK_exp2nextreg(fs,&cc->v);
+luaK_setlist(fs,cc->t->u.s.info,cc->na,cc->tostore);
+}
+}
+static void listfield(LexState*ls,struct ConsControl*cc){
+expr(ls,&cc->v);
+luaY_checklimit(ls->fs,cc->na,(INT_MAX-2),"items in a constructor");
+cc->na++;
+cc->tostore++;
+}
+static void constructor(LexState*ls,expdesc*t){
+FuncState*fs=ls->fs;
+int line=ls->linenumber;
+int pc=luaK_codeABC(fs,OP_NEWTABLE,0,0,0);
+struct ConsControl cc;
+cc.na=cc.nh=cc.tostore=0;
+cc.t=t;
+init_exp(t,VRELOCABLE,pc);
+init_exp(&cc.v,VVOID,0);
+luaK_exp2nextreg(ls->fs,t);
+checknext(ls,'{');
+do{
+if(ls->t.token=='}')break;
+closelistfield(fs,&cc);
+switch(ls->t.token){
+case TK_NAME:{
+luaX_lookahead(ls);
+if(ls->lookahead.token!='=')
+listfield(ls,&cc);
+else
+recfield(ls,&cc);
+break;
+}
+case'[':{
+recfield(ls,&cc);
+break;
+}
+default:{
+listfield(ls,&cc);
+break;
+}
+}
+}while(testnext(ls,',')||testnext(ls,';'));
+check_match(ls,'}','{',line);
+lastlistfield(fs,&cc);
+SETARG_B(fs->f->code[pc],luaO_int2fb(cc.na));
+SETARG_C(fs->f->code[pc],luaO_int2fb(cc.nh));
+}
+static void parlist(LexState*ls){
+FuncState*fs=ls->fs;
+Proto*f=fs->f;
+int nparams=0;
+f->is_vararg=0;
+if(ls->t.token!=')'){
+do{
+switch(ls->t.token){
+case TK_NAME:{
+new_localvar(ls,str_checkname(ls),nparams++);
+break;
+}
+case TK_DOTS:{
+luaX_next(ls);
+f->is_vararg|=2;
+break;
+}
+default:luaX_syntaxerror(ls,"<name> or "LUA_QL("...")" expected");
+}
+}while(!f->is_vararg&&testnext(ls,','));
+}
+adjustlocalvars(ls,nparams);
+f->numparams=cast_byte(fs->nactvar-(f->is_vararg&1));
+luaK_reserveregs(fs,fs->nactvar);
+}
+static void body(LexState*ls,expdesc*e,int needself,int line){
+FuncState new_fs;
+open_func(ls,&new_fs);
+new_fs.f->linedefined=line;
+checknext(ls,'(');
+if(needself){
+new_localvarliteral(ls,"self",0);
+adjustlocalvars(ls,1);
+}
+parlist(ls);
+checknext(ls,')');
+chunk(ls);
+new_fs.f->lastlinedefined=ls->linenumber;
+check_match(ls,TK_END,TK_FUNCTION,line);
+close_func(ls);
+pushclosure(ls,&new_fs,e);
+}
+static int explist1(LexState*ls,expdesc*v){
+int n=1;
+expr(ls,v);
+while(testnext(ls,',')){
+luaK_exp2nextreg(ls->fs,v);
+expr(ls,v);
+n++;
+}
+return n;
+}
+static void funcargs(LexState*ls,expdesc*f){
+FuncState*fs=ls->fs;
+expdesc args;
+int base,nparams;
+int line=ls->linenumber;
+switch(ls->t.token){
+case'(':{
+if(line!=ls->lastline)
+luaX_syntaxerror(ls,"ambiguous syntax (function call x new statement)");
+luaX_next(ls);
+if(ls->t.token==')')
+args.k=VVOID;
+else{
+explist1(ls,&args);
+luaK_setmultret(fs,&args);
+}
+check_match(ls,')','(',line);
+break;
+}
+case'{':{
+constructor(ls,&args);
+break;
+}
+case TK_STRING:{
+codestring(ls,&args,ls->t.seminfo.ts);
+luaX_next(ls);
+break;
+}
+default:{
+luaX_syntaxerror(ls,"function arguments expected");
+return;
+}
+}
+base=f->u.s.info;
+if(hasmultret(args.k))
+nparams=(-1);
+else{
+if(args.k!=VVOID)
+luaK_exp2nextreg(fs,&args);
+nparams=fs->freereg-(base+1);
+}
+init_exp(f,VCALL,luaK_codeABC(fs,OP_CALL,base,nparams+1,2));
+luaK_fixline(fs,line);
+fs->freereg=base+1;
+}
+static void prefixexp(LexState*ls,expdesc*v){
+switch(ls->t.token){
+case'(':{
+int line=ls->linenumber;
+luaX_next(ls);
+expr(ls,v);
+check_match(ls,')','(',line);
+luaK_dischargevars(ls->fs,v);
+return;
+}
+case TK_NAME:{
+singlevar(ls,v);
+return;
+}
+default:{
+luaX_syntaxerror(ls,"unexpected symbol");
+return;
+}
+}
+}
+static void primaryexp(LexState*ls,expdesc*v){
+FuncState*fs=ls->fs;
+prefixexp(ls,v);
+for(;;){
+switch(ls->t.token){
+case'.':{
+field(ls,v);
+break;
+}
+case'[':{
+expdesc key;
+luaK_exp2anyreg(fs,v);
+yindex(ls,&key);
+luaK_indexed(fs,v,&key);
+break;
+}
+case':':{
+expdesc key;
+luaX_next(ls);
+checkname(ls,&key);
+luaK_self(fs,v,&key);
+funcargs(ls,v);
+break;
+}
+case'(':case TK_STRING:case'{':{
+luaK_exp2nextreg(fs,v);
+funcargs(ls,v);
+break;
+}
+default:return;
+}
+}
+}
+static void simpleexp(LexState*ls,expdesc*v){
+switch(ls->t.token){
+case TK_NUMBER:{
+init_exp(v,VKNUM,0);
+v->u.nval=ls->t.seminfo.r;
+break;
+}
+case TK_STRING:{
+codestring(ls,v,ls->t.seminfo.ts);
+break;
+}
+case TK_NIL:{
+init_exp(v,VNIL,0);
+break;
+}
+case TK_TRUE:{
+init_exp(v,VTRUE,0);
+break;
+}
+case TK_FALSE:{
+init_exp(v,VFALSE,0);
+break;
+}
+case TK_DOTS:{
+FuncState*fs=ls->fs;
+check_condition(ls,fs->f->is_vararg,
+"cannot use "LUA_QL("...")" outside a vararg function");
+fs->f->is_vararg&=~4;
+init_exp(v,VVARARG,luaK_codeABC(fs,OP_VARARG,0,1,0));
+break;
+}
+case'{':{
+constructor(ls,v);
+return;
+}
+case TK_FUNCTION:{
+luaX_next(ls);
+body(ls,v,0,ls->linenumber);
+return;
+}
+default:{
+primaryexp(ls,v);
+return;
+}
+}
+luaX_next(ls);
+}
+static UnOpr getunopr(int op){
+switch(op){
+case TK_NOT:return OPR_NOT;
+case'-':return OPR_MINUS;
+case'#':return OPR_LEN;
+default:return OPR_NOUNOPR;
+}
+}
+static BinOpr getbinopr(int op){
+switch(op){
+case'+':return OPR_ADD;
+case'-':return OPR_SUB;
+case'*':return OPR_MUL;
+case'/':return OPR_DIV;
+case'%':return OPR_MOD;
+case'^':return OPR_POW;
+case TK_CONCAT:return OPR_CONCAT;
+case TK_NE:return OPR_NE;
+case TK_EQ:return OPR_EQ;
+case'<':return OPR_LT;
+case TK_LE:return OPR_LE;
+case'>':return OPR_GT;
+case TK_GE:return OPR_GE;
+case TK_AND:return OPR_AND;
+case TK_OR:return OPR_OR;
+default:return OPR_NOBINOPR;
+}
+}
+static const struct{
+lu_byte left;
+lu_byte right;
+}priority[]={
+{6,6},{6,6},{7,7},{7,7},{7,7},
+{10,9},{5,4},
+{3,3},{3,3},
+{3,3},{3,3},{3,3},{3,3},
+{2,2},{1,1}
+};
+static BinOpr subexpr(LexState*ls,expdesc*v,unsigned int limit){
+BinOpr op;
+UnOpr uop;
+enterlevel(ls);
+uop=getunopr(ls->t.token);
+if(uop!=OPR_NOUNOPR){
+luaX_next(ls);
+subexpr(ls,v,8);
+luaK_prefix(ls->fs,uop,v);
+}
+else simpleexp(ls,v);
+op=getbinopr(ls->t.token);
+while(op!=OPR_NOBINOPR&&priority[op].left>limit){
+expdesc v2;
+BinOpr nextop;
+luaX_next(ls);
+luaK_infix(ls->fs,op,v);
+nextop=subexpr(ls,&v2,priority[op].right);
+luaK_posfix(ls->fs,op,v,&v2);
+op=nextop;
+}
+leavelevel(ls);
+return op;
+}
+static void expr(LexState*ls,expdesc*v){
+subexpr(ls,v,0);
+}
+static int block_follow(int token){
+switch(token){
+case TK_ELSE:case TK_ELSEIF:case TK_END:
+case TK_UNTIL:case TK_EOS:
+return 1;
+default:return 0;
+}
+}
+static void block(LexState*ls){
+FuncState*fs=ls->fs;
+BlockCnt bl;
+enterblock(fs,&bl,0);
+chunk(ls);
+leaveblock(fs);
+}
+struct LHS_assign{
+struct LHS_assign*prev;
+expdesc v;
+};
+static void check_conflict(LexState*ls,struct LHS_assign*lh,expdesc*v){
+FuncState*fs=ls->fs;
+int extra=fs->freereg;
+int conflict=0;
+for(;lh;lh=lh->prev){
+if(lh->v.k==VINDEXED){
+if(lh->v.u.s.info==v->u.s.info){
+conflict=1;
+lh->v.u.s.info=extra;
+}
+if(lh->v.u.s.aux==v->u.s.info){
+conflict=1;
+lh->v.u.s.aux=extra;
+}
+}
+}
+if(conflict){
+luaK_codeABC(fs,OP_MOVE,fs->freereg,v->u.s.info,0);
+luaK_reserveregs(fs,1);
+}
+}
+static void assignment(LexState*ls,struct LHS_assign*lh,int nvars){
+expdesc e;
+check_condition(ls,VLOCAL<=lh->v.k&&lh->v.k<=VINDEXED,
+"syntax error");
+if(testnext(ls,',')){
+struct LHS_assign nv;
+nv.prev=lh;
+primaryexp(ls,&nv.v);
+if(nv.v.k==VLOCAL)
+check_conflict(ls,lh,&nv.v);
+luaY_checklimit(ls->fs,nvars,200-ls->L->nCcalls,
+"variables in assignment");
+assignment(ls,&nv,nvars+1);
+}
+else{
+int nexps;
+checknext(ls,'=');
+nexps=explist1(ls,&e);
+if(nexps!=nvars){
+adjust_assign(ls,nvars,nexps,&e);
+if(nexps>nvars)
+ls->fs->freereg-=nexps-nvars;
+}
+else{
+luaK_setoneret(ls->fs,&e);
+luaK_storevar(ls->fs,&lh->v,&e);
+return;
+}
+}
+init_exp(&e,VNONRELOC,ls->fs->freereg-1);
+luaK_storevar(ls->fs,&lh->v,&e);
+}
+static int cond(LexState*ls){
+expdesc v;
+expr(ls,&v);
+if(v.k==VNIL)v.k=VFALSE;
+luaK_goiftrue(ls->fs,&v);
+return v.f;
+}
+static void breakstat(LexState*ls){
+FuncState*fs=ls->fs;
+BlockCnt*bl=fs->bl;
+int upval=0;
+while(bl&&!bl->isbreakable){
+upval|=bl->upval;
+bl=bl->previous;
+}
+if(!bl)
+luaX_syntaxerror(ls,"no loop to break");
+if(upval)
+luaK_codeABC(fs,OP_CLOSE,bl->nactvar,0,0);
+luaK_concat(fs,&bl->breaklist,luaK_jump(fs));
+}
+static void whilestat(LexState*ls,int line){
+FuncState*fs=ls->fs;
+int whileinit;
+int condexit;
+BlockCnt bl;
+luaX_next(ls);
+whileinit=luaK_getlabel(fs);
+condexit=cond(ls);
+enterblock(fs,&bl,1);
+checknext(ls,TK_DO);
+block(ls);
+luaK_patchlist(fs,luaK_jump(fs),whileinit);
+check_match(ls,TK_END,TK_WHILE,line);
+leaveblock(fs);
+luaK_patchtohere(fs,condexit);
+}
+static void repeatstat(LexState*ls,int line){
+int condexit;
+FuncState*fs=ls->fs;
+int repeat_init=luaK_getlabel(fs);
+BlockCnt bl1,bl2;
+enterblock(fs,&bl1,1);
+enterblock(fs,&bl2,0);
+luaX_next(ls);
+chunk(ls);
+check_match(ls,TK_UNTIL,TK_REPEAT,line);
+condexit=cond(ls);
+if(!bl2.upval){
+leaveblock(fs);
+luaK_patchlist(ls->fs,condexit,repeat_init);
+}
+else{
+breakstat(ls);
+luaK_patchtohere(ls->fs,condexit);
+leaveblock(fs);
+luaK_patchlist(ls->fs,luaK_jump(fs),repeat_init);
+}
+leaveblock(fs);
+}
+static int exp1(LexState*ls){
+expdesc e;
+int k;
+expr(ls,&e);
+k=e.k;
+luaK_exp2nextreg(ls->fs,&e);
+return k;
+}
+static void forbody(LexState*ls,int base,int line,int nvars,int isnum){
+BlockCnt bl;
+FuncState*fs=ls->fs;
+int prep,endfor;
+adjustlocalvars(ls,3);
+checknext(ls,TK_DO);
+prep=isnum?luaK_codeAsBx(fs,OP_FORPREP,base,(-1)):luaK_jump(fs);
+enterblock(fs,&bl,0);
+adjustlocalvars(ls,nvars);
+luaK_reserveregs(fs,nvars);
+block(ls);
+leaveblock(fs);
+luaK_patchtohere(fs,prep);
+endfor=(isnum)?luaK_codeAsBx(fs,OP_FORLOOP,base,(-1)):
+luaK_codeABC(fs,OP_TFORLOOP,base,0,nvars);
+luaK_fixline(fs,line);
+luaK_patchlist(fs,(isnum?endfor:luaK_jump(fs)),prep+1);
+}
+static void fornum(LexState*ls,TString*varname,int line){
+FuncState*fs=ls->fs;
+int base=fs->freereg;
+new_localvarliteral(ls,"(for index)",0);
+new_localvarliteral(ls,"(for limit)",1);
+new_localvarliteral(ls,"(for step)",2);
+new_localvar(ls,varname,3);
+checknext(ls,'=');
+exp1(ls);
+checknext(ls,',');
+exp1(ls);
+if(testnext(ls,','))
+exp1(ls);
+else{
+luaK_codeABx(fs,OP_LOADK,fs->freereg,luaK_numberK(fs,1));
+luaK_reserveregs(fs,1);
+}
+forbody(ls,base,line,1,1);
+}
+static void forlist(LexState*ls,TString*indexname){
+FuncState*fs=ls->fs;
+expdesc e;
+int nvars=0;
+int line;
+int base=fs->freereg;
+new_localvarliteral(ls,"(for generator)",nvars++);
+new_localvarliteral(ls,"(for state)",nvars++);
+new_localvarliteral(ls,"(for control)",nvars++);
+new_localvar(ls,indexname,nvars++);
+while(testnext(ls,','))
+new_localvar(ls,str_checkname(ls),nvars++);
+checknext(ls,TK_IN);
+line=ls->linenumber;
+adjust_assign(ls,3,explist1(ls,&e),&e);
+luaK_checkstack(fs,3);
+forbody(ls,base,line,nvars-3,0);
+}
+static void forstat(LexState*ls,int line){
+FuncState*fs=ls->fs;
+TString*varname;
+BlockCnt bl;
+enterblock(fs,&bl,1);
+luaX_next(ls);
+varname=str_checkname(ls);
+switch(ls->t.token){
+case'=':fornum(ls,varname,line);break;
+case',':case TK_IN:forlist(ls,varname);break;
+default:luaX_syntaxerror(ls,LUA_QL("=")" or "LUA_QL("in")" expected");
+}
+check_match(ls,TK_END,TK_FOR,line);
+leaveblock(fs);
+}
+static int test_then_block(LexState*ls){
+int condexit;
+luaX_next(ls);
+condexit=cond(ls);
+checknext(ls,TK_THEN);
+block(ls);
+return condexit;
+}
+static void ifstat(LexState*ls,int line){
+FuncState*fs=ls->fs;
+int flist;
+int escapelist=(-1);
+flist=test_then_block(ls);
+while(ls->t.token==TK_ELSEIF){
+luaK_concat(fs,&escapelist,luaK_jump(fs));
+luaK_patchtohere(fs,flist);
+flist=test_then_block(ls);
+}
+if(ls->t.token==TK_ELSE){
+luaK_concat(fs,&escapelist,luaK_jump(fs));
+luaK_patchtohere(fs,flist);
+luaX_next(ls);
+block(ls);
+}
+else
+luaK_concat(fs,&escapelist,flist);
+luaK_patchtohere(fs,escapelist);
+check_match(ls,TK_END,TK_IF,line);
+}
+static void localfunc(LexState*ls){
+expdesc v,b;
+FuncState*fs=ls->fs;
+new_localvar(ls,str_checkname(ls),0);
+init_exp(&v,VLOCAL,fs->freereg);
+luaK_reserveregs(fs,1);
+adjustlocalvars(ls,1);
+body(ls,&b,0,ls->linenumber);
+luaK_storevar(fs,&v,&b);
+getlocvar(fs,fs->nactvar-1).startpc=fs->pc;
+}
+static void localstat(LexState*ls){
+int nvars=0;
+int nexps;
+expdesc e;
+do{
+new_localvar(ls,str_checkname(ls),nvars++);
+}while(testnext(ls,','));
+if(testnext(ls,'='))
+nexps=explist1(ls,&e);
+else{
+e.k=VVOID;
+nexps=0;
+}
+adjust_assign(ls,nvars,nexps,&e);
+adjustlocalvars(ls,nvars);
+}
+static int funcname(LexState*ls,expdesc*v){
+int needself=0;
+singlevar(ls,v);
+while(ls->t.token=='.')
+field(ls,v);
+if(ls->t.token==':'){
+needself=1;
+field(ls,v);
+}
+return needself;
+}
+static void funcstat(LexState*ls,int line){
+int needself;
+expdesc v,b;
+luaX_next(ls);
+needself=funcname(ls,&v);
+body(ls,&b,needself,line);
+luaK_storevar(ls->fs,&v,&b);
+luaK_fixline(ls->fs,line);
+}
+static void exprstat(LexState*ls){
+FuncState*fs=ls->fs;
+struct LHS_assign v;
+primaryexp(ls,&v.v);
+if(v.v.k==VCALL)
+SETARG_C(getcode(fs,&v.v),1);
+else{
+v.prev=NULL;
+assignment(ls,&v,1);
+}
+}
+static void retstat(LexState*ls){
+FuncState*fs=ls->fs;
+expdesc e;
+int first,nret;
+luaX_next(ls);
+if(block_follow(ls->t.token)||ls->t.token==';')
+first=nret=0;
+else{
+nret=explist1(ls,&e);
+if(hasmultret(e.k)){
+luaK_setmultret(fs,&e);
+if(e.k==VCALL&&nret==1){
+SET_OPCODE(getcode(fs,&e),OP_TAILCALL);
+}
+first=fs->nactvar;
+nret=(-1);
+}
+else{
+if(nret==1)
+first=luaK_exp2anyreg(fs,&e);
+else{
+luaK_exp2nextreg(fs,&e);
+first=fs->nactvar;
+}
+}
+}
+luaK_ret(fs,first,nret);
+}
+static int statement(LexState*ls){
+int line=ls->linenumber;
+switch(ls->t.token){
+case TK_IF:{
+ifstat(ls,line);
+return 0;
+}
+case TK_WHILE:{
+whilestat(ls,line);
+return 0;
+}
+case TK_DO:{
+luaX_next(ls);
+block(ls);
+check_match(ls,TK_END,TK_DO,line);
+return 0;
+}
+case TK_FOR:{
+forstat(ls,line);
+return 0;
+}
+case TK_REPEAT:{
+repeatstat(ls,line);
+return 0;
+}
+case TK_FUNCTION:{
+funcstat(ls,line);
+return 0;
+}
+case TK_LOCAL:{
+luaX_next(ls);
+if(testnext(ls,TK_FUNCTION))
+localfunc(ls);
+else
+localstat(ls);
+return 0;
+}
+case TK_RETURN:{
+retstat(ls);
+return 1;
+}
+case TK_BREAK:{
+luaX_next(ls);
+breakstat(ls);
+return 1;
+}
+default:{
+exprstat(ls);
+return 0;
+}
+}
+}
+static void chunk(LexState*ls){
+int islast=0;
+enterlevel(ls);
+while(!islast&&!block_follow(ls->t.token)){
+islast=statement(ls);
+testnext(ls,';');
+ls->fs->freereg=ls->fs->nactvar;
+}
+leavelevel(ls);
+}
+static const TValue*luaV_tonumber(const TValue*obj,TValue*n){
+lua_Number num;
+if(ttisnumber(obj))return obj;
+if(ttisstring(obj)&&luaO_str2d(svalue(obj),&num)){
+setnvalue(n,num);
+return n;
+}
+else
+return NULL;
+}
+static int luaV_tostring(lua_State*L,StkId obj){
+if(!ttisnumber(obj))
+return 0;
+else{
+char s[32];
+lua_Number n=nvalue(obj);
+lua_number2str(s,n);
+setsvalue(L,obj,luaS_new(L,s));
+return 1;
+}
+}
+static void callTMres(lua_State*L,StkId res,const TValue*f,
+const TValue*p1,const TValue*p2){
+ptrdiff_t result=savestack(L,res);
+setobj(L,L->top,f);
+setobj(L,L->top+1,p1);
+setobj(L,L->top+2,p2);
+luaD_checkstack(L,3);
+L->top+=3;
+luaD_call(L,L->top-3,1);
+res=restorestack(L,result);
+L->top--;
+setobj(L,res,L->top);
+}
+static void callTM(lua_State*L,const TValue*f,const TValue*p1,
+const TValue*p2,const TValue*p3){
+setobj(L,L->top,f);
+setobj(L,L->top+1,p1);
+setobj(L,L->top+2,p2);
+setobj(L,L->top+3,p3);
+luaD_checkstack(L,4);
+L->top+=4;
+luaD_call(L,L->top-4,0);
+}
+static void luaV_gettable(lua_State*L,const TValue*t,TValue*key,StkId val){
+int loop;
+for(loop=0;loop<100;loop++){
+const TValue*tm;
+if(ttistable(t)){
+Table*h=hvalue(t);
+const TValue*res=luaH_get(h,key);
+if(!ttisnil(res)||
+(tm=fasttm(L,h->metatable,TM_INDEX))==NULL){
+setobj(L,val,res);
+return;
+}
+}
+else if(ttisnil(tm=luaT_gettmbyobj(L,t,TM_INDEX)))
+luaG_typeerror(L,t,"index");
+if(ttisfunction(tm)){
+callTMres(L,val,tm,t,key);
+return;
+}
+t=tm;
+}
+luaG_runerror(L,"loop in gettable");
+}
+static void luaV_settable(lua_State*L,const TValue*t,TValue*key,StkId val){
+int loop;
+TValue temp;
+for(loop=0;loop<100;loop++){
+const TValue*tm;
+if(ttistable(t)){
+Table*h=hvalue(t);
+TValue*oldval=luaH_set(L,h,key);
+if(!ttisnil(oldval)||
+(tm=fasttm(L,h->metatable,TM_NEWINDEX))==NULL){
+setobj(L,oldval,val);
+h->flags=0;
+luaC_barriert(L,h,val);
+return;
+}
+}
+else if(ttisnil(tm=luaT_gettmbyobj(L,t,TM_NEWINDEX)))
+luaG_typeerror(L,t,"index");
+if(ttisfunction(tm)){
+callTM(L,tm,t,key,val);
+return;
+}
+setobj(L,&temp,tm);
+t=&temp;
+}
+luaG_runerror(L,"loop in settable");
+}
+static int call_binTM(lua_State*L,const TValue*p1,const TValue*p2,
+StkId res,TMS event){
+const TValue*tm=luaT_gettmbyobj(L,p1,event);
+if(ttisnil(tm))
+tm=luaT_gettmbyobj(L,p2,event);
+if(ttisnil(tm))return 0;
+callTMres(L,res,tm,p1,p2);
+return 1;
+}
+static const TValue*get_compTM(lua_State*L,Table*mt1,Table*mt2,
+TMS event){
+const TValue*tm1=fasttm(L,mt1,event);
+const TValue*tm2;
+if(tm1==NULL)return NULL;
+if(mt1==mt2)return tm1;
+tm2=fasttm(L,mt2,event);
+if(tm2==NULL)return NULL;
+if(luaO_rawequalObj(tm1,tm2))
+return tm1;
+return NULL;
+}
+static int call_orderTM(lua_State*L,const TValue*p1,const TValue*p2,
+TMS event){
+const TValue*tm1=luaT_gettmbyobj(L,p1,event);
+const TValue*tm2;
+if(ttisnil(tm1))return-1;
+tm2=luaT_gettmbyobj(L,p2,event);
+if(!luaO_rawequalObj(tm1,tm2))
+return-1;
+callTMres(L,L->top,tm1,p1,p2);
+return!l_isfalse(L->top);
+}
+static int l_strcmp(const TString*ls,const TString*rs){
+const char*l=getstr(ls);
+size_t ll=ls->tsv.len;
+const char*r=getstr(rs);
+size_t lr=rs->tsv.len;
+for(;;){
+int temp=strcoll(l,r);
+if(temp!=0)return temp;
+else{
+size_t len=strlen(l);
+if(len==lr)
+return(len==ll)?0:1;
+else if(len==ll)
+return-1;
+len++;
+l+=len;ll-=len;r+=len;lr-=len;
+}
+}
+}
+static int luaV_lessthan(lua_State*L,const TValue*l,const TValue*r){
+int res;
+if(ttype(l)!=ttype(r))
+return luaG_ordererror(L,l,r);
+else if(ttisnumber(l))
+return luai_numlt(nvalue(l),nvalue(r));
+else if(ttisstring(l))
+return l_strcmp(rawtsvalue(l),rawtsvalue(r))<0;
+else if((res=call_orderTM(L,l,r,TM_LT))!=-1)
+return res;
+return luaG_ordererror(L,l,r);
+}
+static int lessequal(lua_State*L,const TValue*l,const TValue*r){
+int res;
+if(ttype(l)!=ttype(r))
+return luaG_ordererror(L,l,r);
+else if(ttisnumber(l))
+return luai_numle(nvalue(l),nvalue(r));
+else if(ttisstring(l))
+return l_strcmp(rawtsvalue(l),rawtsvalue(r))<=0;
+else if((res=call_orderTM(L,l,r,TM_LE))!=-1)
+return res;
+else if((res=call_orderTM(L,r,l,TM_LT))!=-1)
+return!res;
+return luaG_ordererror(L,l,r);
+}
+static int luaV_equalval(lua_State*L,const TValue*t1,const TValue*t2){
+const TValue*tm;
+switch(ttype(t1)){
+case 0:return 1;
+case 3:return luai_numeq(nvalue(t1),nvalue(t2));
+case 1:return bvalue(t1)==bvalue(t2);
+case 2:return pvalue(t1)==pvalue(t2);
+case 7:{
+if(uvalue(t1)==uvalue(t2))return 1;
+tm=get_compTM(L,uvalue(t1)->metatable,uvalue(t2)->metatable,
+TM_EQ);
+break;
+}
+case 5:{
+if(hvalue(t1)==hvalue(t2))return 1;
+tm=get_compTM(L,hvalue(t1)->metatable,hvalue(t2)->metatable,TM_EQ);
+break;
+}
+default:return gcvalue(t1)==gcvalue(t2);
+}
+if(tm==NULL)return 0;
+callTMres(L,L->top,tm,t1,t2);
+return!l_isfalse(L->top);
+}
+static void luaV_concat(lua_State*L,int total,int last){
+do{
+StkId top=L->base+last+1;
+int n=2;
+if(!(ttisstring(top-2)||ttisnumber(top-2))||!tostring(L,top-1)){
+if(!call_binTM(L,top-2,top-1,top-2,TM_CONCAT))
+luaG_concaterror(L,top-2,top-1);
+}else if(tsvalue(top-1)->len==0)
+(void)tostring(L,top-2);
+else{
+size_t tl=tsvalue(top-1)->len;
+char*buffer;
+int i;
+for(n=1;n<total&&tostring(L,top-n-1);n++){
+size_t l=tsvalue(top-n-1)->len;
+if(l>=((size_t)(~(size_t)0)-2)-tl)luaG_runerror(L,"string length overflow");
+tl+=l;
+}
+buffer=luaZ_openspace(L,&G(L)->buff,tl);
+tl=0;
+for(i=n;i>0;i--){
+size_t l=tsvalue(top-i)->len;
+memcpy(buffer+tl,svalue(top-i),l);
+tl+=l;
+}
+setsvalue(L,top-n,luaS_newlstr(L,buffer,tl));
+}
+total-=n-1;
+last-=n-1;
+}while(total>1);
+}
+static void Arith(lua_State*L,StkId ra,const TValue*rb,
+const TValue*rc,TMS op){
+TValue tempb,tempc;
+const TValue*b,*c;
+if((b=luaV_tonumber(rb,&tempb))!=NULL&&
+(c=luaV_tonumber(rc,&tempc))!=NULL){
+lua_Number nb=nvalue(b),nc=nvalue(c);
+switch(op){
+case TM_ADD:setnvalue(ra,luai_numadd(nb,nc));break;
+case TM_SUB:setnvalue(ra,luai_numsub(nb,nc));break;
+case TM_MUL:setnvalue(ra,luai_nummul(nb,nc));break;
+case TM_DIV:setnvalue(ra,luai_numdiv(nb,nc));break;
+case TM_MOD:setnvalue(ra,luai_nummod(nb,nc));break;
+case TM_POW:setnvalue(ra,luai_numpow(nb,nc));break;
+case TM_UNM:setnvalue(ra,luai_numunm(nb));break;
+default:break;
+}
+}
+else if(!call_binTM(L,rb,rc,ra,op))
+luaG_aritherror(L,rb,rc);
+}
+#define runtime_check(L,c){if(!(c))break;}
+#define RA(i)(base+GETARG_A(i))
+#define RB(i)check_exp(getBMode(GET_OPCODE(i))==OpArgR,base+GETARG_B(i))
+#define RKB(i)check_exp(getBMode(GET_OPCODE(i))==OpArgK,ISK(GETARG_B(i))?k+INDEXK(GETARG_B(i)):base+GETARG_B(i))
+#define RKC(i)check_exp(getCMode(GET_OPCODE(i))==OpArgK,ISK(GETARG_C(i))?k+INDEXK(GETARG_C(i)):base+GETARG_C(i))
+#define KBx(i)check_exp(getBMode(GET_OPCODE(i))==OpArgK,k+GETARG_Bx(i))
+#define dojump(L,pc,i){(pc)+=(i);}
+#define Protect(x){L->savedpc=pc;{x;};base=L->base;}
+#define arith_op(op,tm){TValue*rb=RKB(i);TValue*rc=RKC(i);if(ttisnumber(rb)&&ttisnumber(rc)){lua_Number nb=nvalue(rb),nc=nvalue(rc);setnvalue(ra,op(nb,nc));}else Protect(Arith(L,ra,rb,rc,tm));}
+static void luaV_execute(lua_State*L,int nexeccalls){
+LClosure*cl;
+StkId base;
+TValue*k;
+const Instruction*pc;
+reentry:
+pc=L->savedpc;
+cl=&clvalue(L->ci->func)->l;
+base=L->base;
+k=cl->p->k;
+for(;;){
+const Instruction i=*pc++;
+StkId ra;
+ra=RA(i);
+switch(GET_OPCODE(i)){
+case OP_MOVE:{
+setobj(L,ra,RB(i));
+continue;
+}
+case OP_LOADK:{
+setobj(L,ra,KBx(i));
+continue;
+}
+case OP_LOADBOOL:{
+setbvalue(ra,GETARG_B(i));
+if(GETARG_C(i))pc++;
+continue;
+}
+case OP_LOADNIL:{
+TValue*rb=RB(i);
+do{
+setnilvalue(rb--);
+}while(rb>=ra);
+continue;
+}
+case OP_GETUPVAL:{
+int b=GETARG_B(i);
+setobj(L,ra,cl->upvals[b]->v);
+continue;
+}
+case OP_GETGLOBAL:{
+TValue g;
+TValue*rb=KBx(i);
+sethvalue(L,&g,cl->env);
+Protect(luaV_gettable(L,&g,rb,ra));
+continue;
+}
+case OP_GETTABLE:{
+Protect(luaV_gettable(L,RB(i),RKC(i),ra));
+continue;
+}
+case OP_SETGLOBAL:{
+TValue g;
+sethvalue(L,&g,cl->env);
+Protect(luaV_settable(L,&g,KBx(i),ra));
+continue;
+}
+case OP_SETUPVAL:{
+UpVal*uv=cl->upvals[GETARG_B(i)];
+setobj(L,uv->v,ra);
+luaC_barrier(L,uv,ra);
+continue;
+}
+case OP_SETTABLE:{
+Protect(luaV_settable(L,ra,RKB(i),RKC(i)));
+continue;
+}
+case OP_NEWTABLE:{
+int b=GETARG_B(i);
+int c=GETARG_C(i);
+sethvalue(L,ra,luaH_new(L,luaO_fb2int(b),luaO_fb2int(c)));
+Protect(luaC_checkGC(L));
+continue;
+}
+case OP_SELF:{
+StkId rb=RB(i);
+setobj(L,ra+1,rb);
+Protect(luaV_gettable(L,rb,RKC(i),ra));
+continue;
+}
+case OP_ADD:{
+arith_op(luai_numadd,TM_ADD);
+continue;
+}
+case OP_SUB:{
+arith_op(luai_numsub,TM_SUB);
+continue;
+}
+case OP_MUL:{
+arith_op(luai_nummul,TM_MUL);
+continue;
+}
+case OP_DIV:{
+arith_op(luai_numdiv,TM_DIV);
+continue;
+}
+case OP_MOD:{
+arith_op(luai_nummod,TM_MOD);
+continue;
+}
+case OP_POW:{
+arith_op(luai_numpow,TM_POW);
+continue;
+}
+case OP_UNM:{
+TValue*rb=RB(i);
+if(ttisnumber(rb)){
+lua_Number nb=nvalue(rb);
+setnvalue(ra,luai_numunm(nb));
+}
+else{
+Protect(Arith(L,ra,rb,rb,TM_UNM));
+}
+continue;
+}
+case OP_NOT:{
+int res=l_isfalse(RB(i));
+setbvalue(ra,res);
+continue;
+}
+case OP_LEN:{
+const TValue*rb=RB(i);
+switch(ttype(rb)){
+case 5:{
+setnvalue(ra,cast_num(luaH_getn(hvalue(rb))));
+break;
+}
+case 4:{
+setnvalue(ra,cast_num(tsvalue(rb)->len));
+break;
+}
+default:{
+Protect(
+if(!call_binTM(L,rb,(&luaO_nilobject_),ra,TM_LEN))
+luaG_typeerror(L,rb,"get length of");
+)
+}
+}
+continue;
+}
+case OP_CONCAT:{
+int b=GETARG_B(i);
+int c=GETARG_C(i);
+Protect(luaV_concat(L,c-b+1,c);luaC_checkGC(L));
+setobj(L,RA(i),base+b);
+continue;
+}
+case OP_JMP:{
+dojump(L,pc,GETARG_sBx(i));
+continue;
+}
+case OP_EQ:{
+TValue*rb=RKB(i);
+TValue*rc=RKC(i);
+Protect(
+if(equalobj(L,rb,rc)==GETARG_A(i))
+dojump(L,pc,GETARG_sBx(*pc));
+)
+pc++;
+continue;
+}
+case OP_LT:{
+Protect(
+if(luaV_lessthan(L,RKB(i),RKC(i))==GETARG_A(i))
+dojump(L,pc,GETARG_sBx(*pc));
+)
+pc++;
+continue;
+}
+case OP_LE:{
+Protect(
+if(lessequal(L,RKB(i),RKC(i))==GETARG_A(i))
+dojump(L,pc,GETARG_sBx(*pc));
+)
+pc++;
+continue;
+}
+case OP_TEST:{
+if(l_isfalse(ra)!=GETARG_C(i))
+dojump(L,pc,GETARG_sBx(*pc));
+pc++;
+continue;
+}
+case OP_TESTSET:{
+TValue*rb=RB(i);
+if(l_isfalse(rb)!=GETARG_C(i)){
+setobj(L,ra,rb);
+dojump(L,pc,GETARG_sBx(*pc));
+}
+pc++;
+continue;
+}
+case OP_CALL:{
+int b=GETARG_B(i);
+int nresults=GETARG_C(i)-1;
+if(b!=0)L->top=ra+b;
+L->savedpc=pc;
+switch(luaD_precall(L,ra,nresults)){
+case 0:{
+nexeccalls++;
+goto reentry;
+}
+case 1:{
+if(nresults>=0)L->top=L->ci->top;
+base=L->base;
+continue;
+}
+default:{
+return;
+}
+}
+}
+case OP_TAILCALL:{
+int b=GETARG_B(i);
+if(b!=0)L->top=ra+b;
+L->savedpc=pc;
+switch(luaD_precall(L,ra,(-1))){
+case 0:{
+CallInfo*ci=L->ci-1;
+int aux;
+StkId func=ci->func;
+StkId pfunc=(ci+1)->func;
+if(L->openupval)luaF_close(L,ci->base);
+L->base=ci->base=ci->func+((ci+1)->base-pfunc);
+for(aux=0;pfunc+aux<L->top;aux++)
+setobj(L,func+aux,pfunc+aux);
+ci->top=L->top=func+aux;
+ci->savedpc=L->savedpc;
+ci->tailcalls++;
+L->ci--;
+goto reentry;
+}
+case 1:{
+base=L->base;
+continue;
+}
+default:{
+return;
+}
+}
+}
+case OP_RETURN:{
+int b=GETARG_B(i);
+if(b!=0)L->top=ra+b-1;
+if(L->openupval)luaF_close(L,base);
+L->savedpc=pc;
+b=luaD_poscall(L,ra);
+if(--nexeccalls==0)
+return;
+else{
+if(b)L->top=L->ci->top;
+goto reentry;
+}
+}
+case OP_FORLOOP:{
+lua_Number step=nvalue(ra+2);
+lua_Number idx=luai_numadd(nvalue(ra),step);
+lua_Number limit=nvalue(ra+1);
+if(luai_numlt(0,step)?luai_numle(idx,limit)
+:luai_numle(limit,idx)){
+dojump(L,pc,GETARG_sBx(i));
+setnvalue(ra,idx);
+setnvalue(ra+3,idx);
+}
+continue;
+}
+case OP_FORPREP:{
+const TValue*init=ra;
+const TValue*plimit=ra+1;
+const TValue*pstep=ra+2;
+L->savedpc=pc;
+if(!tonumber(init,ra))
+luaG_runerror(L,LUA_QL("for")" initial value must be a number");
+else if(!tonumber(plimit,ra+1))
+luaG_runerror(L,LUA_QL("for")" limit must be a number");
+else if(!tonumber(pstep,ra+2))
+luaG_runerror(L,LUA_QL("for")" step must be a number");
+setnvalue(ra,luai_numsub(nvalue(ra),nvalue(pstep)));
+dojump(L,pc,GETARG_sBx(i));
+continue;
+}
+case OP_TFORLOOP:{
+StkId cb=ra+3;
+setobj(L,cb+2,ra+2);
+setobj(L,cb+1,ra+1);
+setobj(L,cb,ra);
+L->top=cb+3;
+Protect(luaD_call(L,cb,GETARG_C(i)));
+L->top=L->ci->top;
+cb=RA(i)+3;
+if(!ttisnil(cb)){
+setobj(L,cb-1,cb);
+dojump(L,pc,GETARG_sBx(*pc));
+}
+pc++;
+continue;
+}
+case OP_SETLIST:{
+int n=GETARG_B(i);
+int c=GETARG_C(i);
+int last;
+Table*h;
+if(n==0){
+n=cast_int(L->top-ra)-1;
+L->top=L->ci->top;
+}
+if(c==0)c=cast_int(*pc++);
+runtime_check(L,ttistable(ra));
+h=hvalue(ra);
+last=((c-1)*50)+n;
+if(last>h->sizearray)
+luaH_resizearray(L,h,last);
+for(;n>0;n--){
+TValue*val=ra+n;
+setobj(L,luaH_setnum(L,h,last--),val);
+luaC_barriert(L,h,val);
+}
+continue;
+}
+case OP_CLOSE:{
+luaF_close(L,ra);
+continue;
+}
+case OP_CLOSURE:{
+Proto*p;
+Closure*ncl;
+int nup,j;
+p=cl->p->p[GETARG_Bx(i)];
+nup=p->nups;
+ncl=luaF_newLclosure(L,nup,cl->env);
+ncl->l.p=p;
+for(j=0;j<nup;j++,pc++){
+if(GET_OPCODE(*pc)==OP_GETUPVAL)
+ncl->l.upvals[j]=cl->upvals[GETARG_B(*pc)];
+else{
+ncl->l.upvals[j]=luaF_findupval(L,base+GETARG_B(*pc));
+}
+}
+setclvalue(L,ra,ncl);
+Protect(luaC_checkGC(L));
+continue;
+}
+case OP_VARARG:{
+int b=GETARG_B(i)-1;
+int j;
+CallInfo*ci=L->ci;
+int n=cast_int(ci->base-ci->func)-cl->p->numparams-1;
+if(b==(-1)){
+Protect(luaD_checkstack(L,n));
+ra=RA(i);
+b=n;
+L->top=ra+n;
+}
+for(j=0;j<b;j++){
+if(j<n){
+setobj(L,ra+j,ci->base-n+j);
+}
+else{
+setnilvalue(ra+j);
+}
+}
+continue;
+}
+}
+}
+}
+#define api_checknelems(L,n)luai_apicheck(L,(n)<=(L->top-L->base))
+#define api_checkvalidindex(L,i)luai_apicheck(L,(i)!=(&luaO_nilobject_))
+#define api_incr_top(L){luai_apicheck(L,L->top<L->ci->top);L->top++;}
+static TValue*index2adr(lua_State*L,int idx){
+if(idx>0){
+TValue*o=L->base+(idx-1);
+luai_apicheck(L,idx<=L->ci->top-L->base);
+if(o>=L->top)return cast(TValue*,(&luaO_nilobject_));
+else return o;
+}
+else if(idx>(-10000)){
+luai_apicheck(L,idx!=0&&-idx<=L->top-L->base);
+return L->top+idx;
+}
+else switch(idx){
+case(-10000):return registry(L);
+case(-10001):{
+Closure*func=curr_func(L);
+sethvalue(L,&L->env,func->c.env);
+return&L->env;
+}
+case(-10002):return gt(L);
+default:{
+Closure*func=curr_func(L);
+idx=(-10002)-idx;
+return(idx<=func->c.nupvalues)
+?&func->c.upvalue[idx-1]
+:cast(TValue*,(&luaO_nilobject_));
+}
+}
+}
+static Table*getcurrenv(lua_State*L){
+if(L->ci==L->base_ci)
+return hvalue(gt(L));
+else{
+Closure*func=curr_func(L);
+return func->c.env;
+}
+}
+static int lua_checkstack(lua_State*L,int size){
+int res=1;
+if(size>8000||(L->top-L->base+size)>8000)
+res=0;
+else if(size>0){
+luaD_checkstack(L,size);
+if(L->ci->top<L->top+size)
+L->ci->top=L->top+size;
+}
+return res;
+}
+static lua_CFunction lua_atpanic(lua_State*L,lua_CFunction panicf){
+lua_CFunction old;
+old=G(L)->panic;
+G(L)->panic=panicf;
+return old;
+}
+static int lua_gettop(lua_State*L){
+return cast_int(L->top-L->base);
+}
+static void lua_settop(lua_State*L,int idx){
+if(idx>=0){
+luai_apicheck(L,idx<=L->stack_last-L->base);
+while(L->top<L->base+idx)
+setnilvalue(L->top++);
+L->top=L->base+idx;
+}
+else{
+luai_apicheck(L,-(idx+1)<=(L->top-L->base));
+L->top+=idx+1;
+}
+}
+static void lua_remove(lua_State*L,int idx){
+StkId p;
+p=index2adr(L,idx);
+api_checkvalidindex(L,p);
+while(++p<L->top)setobj(L,p-1,p);
+L->top--;
+}
+static void lua_insert(lua_State*L,int idx){
+StkId p;
+StkId q;
+p=index2adr(L,idx);
+api_checkvalidindex(L,p);
+for(q=L->top;q>p;q--)setobj(L,q,q-1);
+setobj(L,p,L->top);
+}
+static void lua_replace(lua_State*L,int idx){
+StkId o;
+if(idx==(-10001)&&L->ci==L->base_ci)
+luaG_runerror(L,"no calling environment");
+api_checknelems(L,1);
+o=index2adr(L,idx);
+api_checkvalidindex(L,o);
+if(idx==(-10001)){
+Closure*func=curr_func(L);
+luai_apicheck(L,ttistable(L->top-1));
+func->c.env=hvalue(L->top-1);
+luaC_barrier(L,func,L->top-1);
+}
+else{
+setobj(L,o,L->top-1);
+if(idx<(-10002))
+luaC_barrier(L,curr_func(L),L->top-1);
+}
+L->top--;
+}
+static void lua_pushvalue(lua_State*L,int idx){
+setobj(L,L->top,index2adr(L,idx));
+api_incr_top(L);
+}
+static int lua_type(lua_State*L,int idx){
+StkId o=index2adr(L,idx);
+return(o==(&luaO_nilobject_))?(-1):ttype(o);
+}
+static const char*lua_typename(lua_State*L,int t){
+UNUSED(L);
+return(t==(-1))?"no value":luaT_typenames[t];
+}
+static int lua_iscfunction(lua_State*L,int idx){
+StkId o=index2adr(L,idx);
+return iscfunction(o);
+}
+static int lua_isnumber(lua_State*L,int idx){
+TValue n;
+const TValue*o=index2adr(L,idx);
+return tonumber(o,&n);
+}
+static int lua_isstring(lua_State*L,int idx){
+int t=lua_type(L,idx);
+return(t==4||t==3);
+}
+static int lua_rawequal(lua_State*L,int index1,int index2){
+StkId o1=index2adr(L,index1);
+StkId o2=index2adr(L,index2);
+return(o1==(&luaO_nilobject_)||o2==(&luaO_nilobject_))?0
+:luaO_rawequalObj(o1,o2);
+}
+static int lua_lessthan(lua_State*L,int index1,int index2){
+StkId o1,o2;
+int i;
+o1=index2adr(L,index1);
+o2=index2adr(L,index2);
+i=(o1==(&luaO_nilobject_)||o2==(&luaO_nilobject_))?0
+:luaV_lessthan(L,o1,o2);
+return i;
+}
+static lua_Number lua_tonumber(lua_State*L,int idx){
+TValue n;
+const TValue*o=index2adr(L,idx);
+if(tonumber(o,&n))
+return nvalue(o);
+else
+return 0;
+}
+static lua_Integer lua_tointeger(lua_State*L,int idx){
+TValue n;
+const TValue*o=index2adr(L,idx);
+if(tonumber(o,&n)){
+lua_Integer res;
+lua_Number num=nvalue(o);
+lua_number2integer(res,num);
+return res;
+}
+else
+return 0;
+}
+static int lua_toboolean(lua_State*L,int idx){
+const TValue*o=index2adr(L,idx);
+return!l_isfalse(o);
+}
+static const char*lua_tolstring(lua_State*L,int idx,size_t*len){
+StkId o=index2adr(L,idx);
+if(!ttisstring(o)){
+if(!luaV_tostring(L,o)){
+if(len!=NULL)*len=0;
+return NULL;
+}
+luaC_checkGC(L);
+o=index2adr(L,idx);
+}
+if(len!=NULL)*len=tsvalue(o)->len;
+return svalue(o);
+}
+static size_t lua_objlen(lua_State*L,int idx){
+StkId o=index2adr(L,idx);
+switch(ttype(o)){
+case 4:return tsvalue(o)->len;
+case 7:return uvalue(o)->len;
+case 5:return luaH_getn(hvalue(o));
+case 3:{
+size_t l;
+l=(luaV_tostring(L,o)?tsvalue(o)->len:0);
+return l;
+}
+default:return 0;
+}
+}
+static lua_CFunction lua_tocfunction(lua_State*L,int idx){
+StkId o=index2adr(L,idx);
+return(!iscfunction(o))?NULL:clvalue(o)->c.f;
+}
+static void*lua_touserdata(lua_State*L,int idx){
+StkId o=index2adr(L,idx);
+switch(ttype(o)){
+case 7:return(rawuvalue(o)+1);
+case 2:return pvalue(o);
+default:return NULL;
+}
+}
+static void lua_pushnil(lua_State*L){
+setnilvalue(L->top);
+api_incr_top(L);
+}
+static void lua_pushnumber(lua_State*L,lua_Number n){
+setnvalue(L->top,n);
+api_incr_top(L);
+}
+static void lua_pushinteger(lua_State*L,lua_Integer n){
+setnvalue(L->top,cast_num(n));
+api_incr_top(L);
+}
+static void lua_pushlstring(lua_State*L,const char*s,size_t len){
+luaC_checkGC(L);
+setsvalue(L,L->top,luaS_newlstr(L,s,len));
+api_incr_top(L);
+}
+static void lua_pushstring(lua_State*L,const char*s){
+if(s==NULL)
+lua_pushnil(L);
+else
+lua_pushlstring(L,s,strlen(s));
+}
+static const char*lua_pushvfstring(lua_State*L,const char*fmt,
+va_list argp){
+const char*ret;
+luaC_checkGC(L);
+ret=luaO_pushvfstring(L,fmt,argp);
+return ret;
+}
+static const char*lua_pushfstring(lua_State*L,const char*fmt,...){
+const char*ret;
+va_list argp;
+luaC_checkGC(L);
+va_start(argp,fmt);
+ret=luaO_pushvfstring(L,fmt,argp);
+va_end(argp);
+return ret;
+}
+static void lua_pushcclosure(lua_State*L,lua_CFunction fn,int n){
+Closure*cl;
+luaC_checkGC(L);
+api_checknelems(L,n);
+cl=luaF_newCclosure(L,n,getcurrenv(L));
+cl->c.f=fn;
+L->top-=n;
+while(n--)
+setobj(L,&cl->c.upvalue[n],L->top+n);
+setclvalue(L,L->top,cl);
+api_incr_top(L);
+}
+static void lua_pushboolean(lua_State*L,int b){
+setbvalue(L->top,(b!=0));
+api_incr_top(L);
+}
+static int lua_pushthread(lua_State*L){
+setthvalue(L,L->top,L);
+api_incr_top(L);
+return(G(L)->mainthread==L);
+}
+static void lua_gettable(lua_State*L,int idx){
+StkId t;
+t=index2adr(L,idx);
+api_checkvalidindex(L,t);
+luaV_gettable(L,t,L->top-1,L->top-1);
+}
+static void lua_getfield(lua_State*L,int idx,const char*k){
+StkId t;
+TValue key;
+t=index2adr(L,idx);
+api_checkvalidindex(L,t);
+setsvalue(L,&key,luaS_new(L,k));
+luaV_gettable(L,t,&key,L->top);
+api_incr_top(L);
+}
+static void lua_rawget(lua_State*L,int idx){
+StkId t;
+t=index2adr(L,idx);
+luai_apicheck(L,ttistable(t));
+setobj(L,L->top-1,luaH_get(hvalue(t),L->top-1));
+}
+static void lua_rawgeti(lua_State*L,int idx,int n){
+StkId o;
+o=index2adr(L,idx);
+luai_apicheck(L,ttistable(o));
+setobj(L,L->top,luaH_getnum(hvalue(o),n));
+api_incr_top(L);
+}
+static void lua_createtable(lua_State*L,int narray,int nrec){
+luaC_checkGC(L);
+sethvalue(L,L->top,luaH_new(L,narray,nrec));
+api_incr_top(L);
+}
+static int lua_getmetatable(lua_State*L,int objindex){
+const TValue*obj;
+Table*mt=NULL;
+int res;
+obj=index2adr(L,objindex);
+switch(ttype(obj)){
+case 5:
+mt=hvalue(obj)->metatable;
+break;
+case 7:
+mt=uvalue(obj)->metatable;
+break;
+default:
+mt=G(L)->mt[ttype(obj)];
+break;
+}
+if(mt==NULL)
+res=0;
+else{
+sethvalue(L,L->top,mt);
+api_incr_top(L);
+res=1;
+}
+return res;
+}
+static void lua_getfenv(lua_State*L,int idx){
+StkId o;
+o=index2adr(L,idx);
+api_checkvalidindex(L,o);
+switch(ttype(o)){
+case 6:
+sethvalue(L,L->top,clvalue(o)->c.env);
+break;
+case 7:
+sethvalue(L,L->top,uvalue(o)->env);
+break;
+case 8:
+setobj(L,L->top,gt(thvalue(o)));
+break;
+default:
+setnilvalue(L->top);
+break;
+}
+api_incr_top(L);
+}
+static void lua_settable(lua_State*L,int idx){
+StkId t;
+api_checknelems(L,2);
+t=index2adr(L,idx);
+api_checkvalidindex(L,t);
+luaV_settable(L,t,L->top-2,L->top-1);
+L->top-=2;
+}
+static void lua_setfield(lua_State*L,int idx,const char*k){
+StkId t;
+TValue key;
+api_checknelems(L,1);
+t=index2adr(L,idx);
+api_checkvalidindex(L,t);
+setsvalue(L,&key,luaS_new(L,k));
+luaV_settable(L,t,&key,L->top-1);
+L->top--;
+}
+static void lua_rawset(lua_State*L,int idx){
+StkId t;
+api_checknelems(L,2);
+t=index2adr(L,idx);
+luai_apicheck(L,ttistable(t));
+setobj(L,luaH_set(L,hvalue(t),L->top-2),L->top-1);
+luaC_barriert(L,hvalue(t),L->top-1);
+L->top-=2;
+}
+static void lua_rawseti(lua_State*L,int idx,int n){
+StkId o;
+api_checknelems(L,1);
+o=index2adr(L,idx);
+luai_apicheck(L,ttistable(o));
+setobj(L,luaH_setnum(L,hvalue(o),n),L->top-1);
+luaC_barriert(L,hvalue(o),L->top-1);
+L->top--;
+}
+static int lua_setmetatable(lua_State*L,int objindex){
+TValue*obj;
+Table*mt;
+api_checknelems(L,1);
+obj=index2adr(L,objindex);
+api_checkvalidindex(L,obj);
+if(ttisnil(L->top-1))
+mt=NULL;
+else{
+luai_apicheck(L,ttistable(L->top-1));
+mt=hvalue(L->top-1);
+}
+switch(ttype(obj)){
+case 5:{
+hvalue(obj)->metatable=mt;
+if(mt)
+luaC_objbarriert(L,hvalue(obj),mt);
+break;
+}
+case 7:{
+uvalue(obj)->metatable=mt;
+if(mt)
+luaC_objbarrier(L,rawuvalue(obj),mt);
+break;
+}
+default:{
+G(L)->mt[ttype(obj)]=mt;
+break;
+}
+}
+L->top--;
+return 1;
+}
+static int lua_setfenv(lua_State*L,int idx){
+StkId o;
+int res=1;
+api_checknelems(L,1);
+o=index2adr(L,idx);
+api_checkvalidindex(L,o);
+luai_apicheck(L,ttistable(L->top-1));
+switch(ttype(o)){
+case 6:
+clvalue(o)->c.env=hvalue(L->top-1);
+break;
+case 7:
+uvalue(o)->env=hvalue(L->top-1);
+break;
+case 8:
+sethvalue(L,gt(thvalue(o)),hvalue(L->top-1));
+break;
+default:
+res=0;
+break;
+}
+if(res)luaC_objbarrier(L,gcvalue(o),hvalue(L->top-1));
+L->top--;
+return res;
+}
+#define adjustresults(L,nres){if(nres==(-1)&&L->top>=L->ci->top)L->ci->top=L->top;}
+#define checkresults(L,na,nr)luai_apicheck(L,(nr)==(-1)||(L->ci->top-L->top>=(nr)-(na)))
+static void lua_call(lua_State*L,int nargs,int nresults){
+StkId func;
+api_checknelems(L,nargs+1);
+checkresults(L,nargs,nresults);
+func=L->top-(nargs+1);
+luaD_call(L,func,nresults);
+adjustresults(L,nresults);
+}
+struct CallS{
+StkId func;
+int nresults;
+};
+static void f_call(lua_State*L,void*ud){
+struct CallS*c=cast(struct CallS*,ud);
+luaD_call(L,c->func,c->nresults);
+}
+static int lua_pcall(lua_State*L,int nargs,int nresults,int errfunc){
+struct CallS c;
+int status;
+ptrdiff_t func;
+api_checknelems(L,nargs+1);
+checkresults(L,nargs,nresults);
+if(errfunc==0)
+func=0;
+else{
+StkId o=index2adr(L,errfunc);
+api_checkvalidindex(L,o);
+func=savestack(L,o);
+}
+c.func=L->top-(nargs+1);
+c.nresults=nresults;
+status=luaD_pcall(L,f_call,&c,savestack(L,c.func),func);
+adjustresults(L,nresults);
+return status;
+}
+static int lua_load(lua_State*L,lua_Reader reader,void*data,
+const char*chunkname){
+ZIO z;
+int status;
+if(!chunkname)chunkname="?";
+luaZ_init(L,&z,reader,data);
+status=luaD_protectedparser(L,&z,chunkname);
+return status;
+}
+static int lua_error(lua_State*L){
+api_checknelems(L,1);
+luaG_errormsg(L);
+return 0;
+}
+static int lua_next(lua_State*L,int idx){
+StkId t;
+int more;
+t=index2adr(L,idx);
+luai_apicheck(L,ttistable(t));
+more=luaH_next(L,hvalue(t),L->top-1);
+if(more){
+api_incr_top(L);
+}
+else
+L->top-=1;
+return more;
+}
+static void lua_concat(lua_State*L,int n){
+api_checknelems(L,n);
+if(n>=2){
+luaC_checkGC(L);
+luaV_concat(L,n,cast_int(L->top-L->base)-1);
+L->top-=(n-1);
+}
+else if(n==0){
+setsvalue(L,L->top,luaS_newlstr(L,"",0));
+api_incr_top(L);
+}
+}
+static void*lua_newuserdata(lua_State*L,size_t size){
+Udata*u;
+luaC_checkGC(L);
+u=luaS_newudata(L,size,getcurrenv(L));
+setuvalue(L,L->top,u);
+api_incr_top(L);
+return u+1;
+}
+#define luaL_getn(L,i)((int)lua_objlen(L,i))
+#define luaL_setn(L,i,j)((void)0)
+typedef struct luaL_Reg{
+const char*name;
+lua_CFunction func;
+}luaL_Reg;
+static void luaI_openlib(lua_State*L,const char*libname,
+const luaL_Reg*l,int nup);
+static int luaL_argerror(lua_State*L,int numarg,const char*extramsg);
+static const char* luaL_checklstring(lua_State*L,int numArg,
+size_t*l);
+static const char* luaL_optlstring(lua_State*L,int numArg,
+const char*def,size_t*l);
+static lua_Integer luaL_checkinteger(lua_State*L,int numArg);
+static lua_Integer luaL_optinteger(lua_State*L,int nArg,
+lua_Integer def);
+static int luaL_error(lua_State*L,const char*fmt,...);
+static const char* luaL_findtable(lua_State*L,int idx,
+const char*fname,int szhint);
+#define luaL_argcheck(L,cond,numarg,extramsg)((void)((cond)||luaL_argerror(L,(numarg),(extramsg))))
+#define luaL_checkstring(L,n)(luaL_checklstring(L,(n),NULL))
+#define luaL_optstring(L,n,d)(luaL_optlstring(L,(n),(d),NULL))
+#define luaL_checkint(L,n)((int)luaL_checkinteger(L,(n)))
+#define luaL_optint(L,n,d)((int)luaL_optinteger(L,(n),(d)))
+#define luaL_typename(L,i)lua_typename(L,lua_type(L,(i)))
+#define luaL_getmetatable(L,n)(lua_getfield(L,(-10000),(n)))
+#define luaL_opt(L,f,n,d)(lua_isnoneornil(L,(n))?(d):f(L,(n)))
+typedef struct luaL_Buffer{
+char*p;
+int lvl;
+lua_State*L;
+char buffer[BUFSIZ];
+}luaL_Buffer;
+#define luaL_addchar(B,c)((void)((B)->p<((B)->buffer+BUFSIZ)||luaL_prepbuffer(B)),(*(B)->p++=(char)(c)))
+#define luaL_addsize(B,n)((B)->p+=(n))
+static char* luaL_prepbuffer(luaL_Buffer*B);
+static int luaL_argerror(lua_State*L,int narg,const char*extramsg){
+lua_Debug ar;
+if(!lua_getstack(L,0,&ar))
+return luaL_error(L,"bad argument #%d (%s)",narg,extramsg);
+lua_getinfo(L,"n",&ar);
+if(strcmp(ar.namewhat,"method")==0){
+narg--;
+if(narg==0)
+return luaL_error(L,"calling "LUA_QL("%s")" on bad self (%s)",
+ar.name,extramsg);
+}
+if(ar.name==NULL)
+ar.name="?";
+return luaL_error(L,"bad argument #%d to "LUA_QL("%s")" (%s)",
+narg,ar.name,extramsg);
+}
+static int luaL_typerror(lua_State*L,int narg,const char*tname){
+const char*msg=lua_pushfstring(L,"%s expected, got %s",
+tname,luaL_typename(L,narg));
+return luaL_argerror(L,narg,msg);
+}
+static void tag_error(lua_State*L,int narg,int tag){
+luaL_typerror(L,narg,lua_typename(L,tag));
+}
+static void luaL_where(lua_State*L,int level){
+lua_Debug ar;
+if(lua_getstack(L,level,&ar)){
+lua_getinfo(L,"Sl",&ar);
+if(ar.currentline>0){
+lua_pushfstring(L,"%s:%d: ",ar.short_src,ar.currentline);
+return;
+}
+}
+lua_pushliteral(L,"");
+}
+static int luaL_error(lua_State*L,const char*fmt,...){
+va_list argp;
+va_start(argp,fmt);
+luaL_where(L,1);
+lua_pushvfstring(L,fmt,argp);
+va_end(argp);
+lua_concat(L,2);
+return lua_error(L);
+}
+static int luaL_newmetatable(lua_State*L,const char*tname){
+lua_getfield(L,(-10000),tname);
+if(!lua_isnil(L,-1))
+return 0;
+lua_pop(L,1);
+lua_newtable(L);
+lua_pushvalue(L,-1);
+lua_setfield(L,(-10000),tname);
+return 1;
+}
+static void*luaL_checkudata(lua_State*L,int ud,const char*tname){
+void*p=lua_touserdata(L,ud);
+if(p!=NULL){
+if(lua_getmetatable(L,ud)){
+lua_getfield(L,(-10000),tname);
+if(lua_rawequal(L,-1,-2)){
+lua_pop(L,2);
+return p;
+}
+}
+}
+luaL_typerror(L,ud,tname);
+return NULL;
+}
+static void luaL_checkstack(lua_State*L,int space,const char*mes){
+if(!lua_checkstack(L,space))
+luaL_error(L,"stack overflow (%s)",mes);
+}
+static void luaL_checktype(lua_State*L,int narg,int t){
+if(lua_type(L,narg)!=t)
+tag_error(L,narg,t);
+}
+static void luaL_checkany(lua_State*L,int narg){
+if(lua_type(L,narg)==(-1))
+luaL_argerror(L,narg,"value expected");
+}
+static const char*luaL_checklstring(lua_State*L,int narg,size_t*len){
+const char*s=lua_tolstring(L,narg,len);
+if(!s)tag_error(L,narg,4);
+return s;
+}
+static const char*luaL_optlstring(lua_State*L,int narg,
+const char*def,size_t*len){
+if(lua_isnoneornil(L,narg)){
+if(len)
+*len=(def?strlen(def):0);
+return def;
+}
+else return luaL_checklstring(L,narg,len);
+}
+static lua_Number luaL_checknumber(lua_State*L,int narg){
+lua_Number d=lua_tonumber(L,narg);
+if(d==0&&!lua_isnumber(L,narg))
+tag_error(L,narg,3);
+return d;
+}
+static lua_Integer luaL_checkinteger(lua_State*L,int narg){
+lua_Integer d=lua_tointeger(L,narg);
+if(d==0&&!lua_isnumber(L,narg))
+tag_error(L,narg,3);
+return d;
+}
+static lua_Integer luaL_optinteger(lua_State*L,int narg,
+lua_Integer def){
+return luaL_opt(L,luaL_checkinteger,narg,def);
+}
+static int luaL_getmetafield(lua_State*L,int obj,const char*event){
+if(!lua_getmetatable(L,obj))
+return 0;
+lua_pushstring(L,event);
+lua_rawget(L,-2);
+if(lua_isnil(L,-1)){
+lua_pop(L,2);
+return 0;
+}
+else{
+lua_remove(L,-2);
+return 1;
+}
+}
+static void luaL_register(lua_State*L,const char*libname,
+const luaL_Reg*l){
+luaI_openlib(L,libname,l,0);
+}
+static int libsize(const luaL_Reg*l){
+int size=0;
+for(;l->name;l++)size++;
+return size;
+}
+static void luaI_openlib(lua_State*L,const char*libname,
+const luaL_Reg*l,int nup){
+if(libname){
+int size=libsize(l);
+luaL_findtable(L,(-10000),"_LOADED",1);
+lua_getfield(L,-1,libname);
+if(!lua_istable(L,-1)){
+lua_pop(L,1);
+if(luaL_findtable(L,(-10002),libname,size)!=NULL)
+luaL_error(L,"name conflict for module "LUA_QL("%s"),libname);
+lua_pushvalue(L,-1);
+lua_setfield(L,-3,libname);
+}
+lua_remove(L,-2);
+lua_insert(L,-(nup+1));
+}
+for(;l->name;l++){
+int i;
+for(i=0;i<nup;i++)
+lua_pushvalue(L,-nup);
+lua_pushcclosure(L,l->func,nup);
+lua_setfield(L,-(nup+2),l->name);
+}
+lua_pop(L,nup);
+}
+static const char*luaL_findtable(lua_State*L,int idx,
+const char*fname,int szhint){
+const char*e;
+lua_pushvalue(L,idx);
+do{
+e=strchr(fname,'.');
+if(e==NULL)e=fname+strlen(fname);
+lua_pushlstring(L,fname,e-fname);
+lua_rawget(L,-2);
+if(lua_isnil(L,-1)){
+lua_pop(L,1);
+lua_createtable(L,0,(*e=='.'?1:szhint));
+lua_pushlstring(L,fname,e-fname);
+lua_pushvalue(L,-2);
+lua_settable(L,-4);
+}
+else if(!lua_istable(L,-1)){
+lua_pop(L,2);
+return fname;
+}
+lua_remove(L,-2);
+fname=e+1;
+}while(*e=='.');
+return NULL;
+}
+#define bufflen(B)((B)->p-(B)->buffer)
+#define bufffree(B)((size_t)(BUFSIZ-bufflen(B)))
+static int emptybuffer(luaL_Buffer*B){
+size_t l=bufflen(B);
+if(l==0)return 0;
+else{
+lua_pushlstring(B->L,B->buffer,l);
+B->p=B->buffer;
+B->lvl++;
+return 1;
+}
+}
+static void adjuststack(luaL_Buffer*B){
+if(B->lvl>1){
+lua_State*L=B->L;
+int toget=1;
+size_t toplen=lua_strlen(L,-1);
+do{
+size_t l=lua_strlen(L,-(toget+1));
+if(B->lvl-toget+1>=(20/2)||toplen>l){
+toplen+=l;
+toget++;
+}
+else break;
+}while(toget<B->lvl);
+lua_concat(L,toget);
+B->lvl=B->lvl-toget+1;
+}
+}
+static char*luaL_prepbuffer(luaL_Buffer*B){
+if(emptybuffer(B))
+adjuststack(B);
+return B->buffer;
+}
+static void luaL_addlstring(luaL_Buffer*B,const char*s,size_t l){
+while(l--)
+luaL_addchar(B,*s++);
+}
+static void luaL_pushresult(luaL_Buffer*B){
+emptybuffer(B);
+lua_concat(B->L,B->lvl);
+B->lvl=1;
+}
+static void luaL_addvalue(luaL_Buffer*B){
+lua_State*L=B->L;
+size_t vl;
+const char*s=lua_tolstring(L,-1,&vl);
+if(vl<=bufffree(B)){
+memcpy(B->p,s,vl);
+B->p+=vl;
+lua_pop(L,1);
+}
+else{
+if(emptybuffer(B))
+lua_insert(L,-2);
+B->lvl++;
+adjuststack(B);
+}
+}
+static void luaL_buffinit(lua_State*L,luaL_Buffer*B){
+B->L=L;
+B->p=B->buffer;
+B->lvl=0;
+}
+typedef struct LoadF{
+int extraline;
+FILE*f;
+char buff[BUFSIZ];
+}LoadF;
+static const char*getF(lua_State*L,void*ud,size_t*size){
+LoadF*lf=(LoadF*)ud;
+(void)L;
+if(lf->extraline){
+lf->extraline=0;
+*size=1;
+return"\n";
+}
+if(feof(lf->f))return NULL;
+*size=fread(lf->buff,1,sizeof(lf->buff),lf->f);
+return(*size>0)?lf->buff:NULL;
+}
+static int errfile(lua_State*L,const char*what,int fnameindex){
+const char*serr=strerror(errno);
+const char*filename=lua_tostring(L,fnameindex)+1;
+lua_pushfstring(L,"cannot %s %s: %s",what,filename,serr);
+lua_remove(L,fnameindex);
+return(5+1);
+}
+static int luaL_loadfile(lua_State*L,const char*filename){
+LoadF lf;
+int status,readstatus;
+int c;
+int fnameindex=lua_gettop(L)+1;
+lf.extraline=0;
+if(filename==NULL){
+lua_pushliteral(L,"=stdin");
+lf.f=stdin;
+}
+else{
+lua_pushfstring(L,"@%s",filename);
+lf.f=fopen(filename,"r");
+if(lf.f==NULL)return errfile(L,"open",fnameindex);
+}
+c=getc(lf.f);
+if(c=='#'){
+lf.extraline=1;
+while((c=getc(lf.f))!=EOF&&c!='\n');
+if(c=='\n')c=getc(lf.f);
+}
+if(c=="\033Lua"[0]&&filename){
+lf.f=freopen(filename,"rb",lf.f);
+if(lf.f==NULL)return errfile(L,"reopen",fnameindex);
+while((c=getc(lf.f))!=EOF&&c!="\033Lua"[0]);
+lf.extraline=0;
+}
+ungetc(c,lf.f);
+status=lua_load(L,getF,&lf,lua_tostring(L,-1));
+readstatus=ferror(lf.f);
+if(filename)fclose(lf.f);
+if(readstatus){
+lua_settop(L,fnameindex);
+return errfile(L,"read",fnameindex);
+}
+lua_remove(L,fnameindex);
+return status;
+}
+typedef struct LoadS{
+const char*s;
+size_t size;
+}LoadS;
+static const char*getS(lua_State*L,void*ud,size_t*size){
+LoadS*ls=(LoadS*)ud;
+(void)L;
+if(ls->size==0)return NULL;
+*size=ls->size;
+ls->size=0;
+return ls->s;
+}
+static int luaL_loadbuffer(lua_State*L,const char*buff,size_t size,
+const char*name){
+LoadS ls;
+ls.s=buff;
+ls.size=size;
+return lua_load(L,getS,&ls,name);
+}
+static void*l_alloc(void*ud,void*ptr,size_t osize,size_t nsize){
+(void)ud;
+(void)osize;
+if(nsize==0){
+free(ptr);
+return NULL;
+}
+else
+return realloc(ptr,nsize);
+}
+static int panic(lua_State*L){
+(void)L;
+fprintf(stderr,"PANIC: unprotected error in call to Lua API (%s)\n",
+lua_tostring(L,-1));
+return 0;
+}
+static lua_State*luaL_newstate(void){
+lua_State*L=lua_newstate(l_alloc,NULL);
+if(L)lua_atpanic(L,&panic);
+return L;
+}
+static int luaB_tonumber(lua_State*L){
+int base=luaL_optint(L,2,10);
+if(base==10){
+luaL_checkany(L,1);
+if(lua_isnumber(L,1)){
+lua_pushnumber(L,lua_tonumber(L,1));
+return 1;
+}
+}
+else{
+const char*s1=luaL_checkstring(L,1);
+char*s2;
+unsigned long n;
+luaL_argcheck(L,2<=base&&base<=36,2,"base out of range");
+n=strtoul(s1,&s2,base);
+if(s1!=s2){
+while(isspace((unsigned char)(*s2)))s2++;
+if(*s2=='\0'){
+lua_pushnumber(L,(lua_Number)n);
+return 1;
+}
+}
+}
+lua_pushnil(L);
+return 1;
+}
+static int luaB_error(lua_State*L){
+int level=luaL_optint(L,2,1);
+lua_settop(L,1);
+if(lua_isstring(L,1)&&level>0){
+luaL_where(L,level);
+lua_pushvalue(L,1);
+lua_concat(L,2);
+}
+return lua_error(L);
+}
+static int luaB_setmetatable(lua_State*L){
+int t=lua_type(L,2);
+luaL_checktype(L,1,5);
+luaL_argcheck(L,t==0||t==5,2,
+"nil or table expected");
+if(luaL_getmetafield(L,1,"__metatable"))
+luaL_error(L,"cannot change a protected metatable");
+lua_settop(L,2);
+lua_setmetatable(L,1);
+return 1;
+}
+static void getfunc(lua_State*L,int opt){
+if(lua_isfunction(L,1))lua_pushvalue(L,1);
+else{
+lua_Debug ar;
+int level=opt?luaL_optint(L,1,1):luaL_checkint(L,1);
+luaL_argcheck(L,level>=0,1,"level must be non-negative");
+if(lua_getstack(L,level,&ar)==0)
+luaL_argerror(L,1,"invalid level");
+lua_getinfo(L,"f",&ar);
+if(lua_isnil(L,-1))
+luaL_error(L,"no function environment for tail call at level %d",
+level);
+}
+}
+static int luaB_setfenv(lua_State*L){
+luaL_checktype(L,2,5);
+getfunc(L,0);
+lua_pushvalue(L,2);
+if(lua_isnumber(L,1)&&lua_tonumber(L,1)==0){
+lua_pushthread(L);
+lua_insert(L,-2);
+lua_setfenv(L,-2);
+return 0;
+}
+else if(lua_iscfunction(L,-2)||lua_setfenv(L,-2)==0)
+luaL_error(L,
+LUA_QL("setfenv")" cannot change environment of given object");
+return 1;
+}
+static int luaB_rawget(lua_State*L){
+luaL_checktype(L,1,5);
+luaL_checkany(L,2);
+lua_settop(L,2);
+lua_rawget(L,1);
+return 1;
+}
+static int luaB_type(lua_State*L){
+luaL_checkany(L,1);
+lua_pushstring(L,luaL_typename(L,1));
+return 1;
+}
+static int luaB_next(lua_State*L){
+luaL_checktype(L,1,5);
+lua_settop(L,2);
+if(lua_next(L,1))
+return 2;
+else{
+lua_pushnil(L);
+return 1;
+}
+}
+static int luaB_pairs(lua_State*L){
+luaL_checktype(L,1,5);
+lua_pushvalue(L,lua_upvalueindex(1));
+lua_pushvalue(L,1);
+lua_pushnil(L);
+return 3;
+}
+static int ipairsaux(lua_State*L){
+int i=luaL_checkint(L,2);
+luaL_checktype(L,1,5);
+i++;
+lua_pushinteger(L,i);
+lua_rawgeti(L,1,i);
+return(lua_isnil(L,-1))?0:2;
+}
+static int luaB_ipairs(lua_State*L){
+luaL_checktype(L,1,5);
+lua_pushvalue(L,lua_upvalueindex(1));
+lua_pushvalue(L,1);
+lua_pushinteger(L,0);
+return 3;
+}
+static int load_aux(lua_State*L,int status){
+if(status==0)
+return 1;
+else{
+lua_pushnil(L);
+lua_insert(L,-2);
+return 2;
+}
+}
+static int luaB_loadstring(lua_State*L){
+size_t l;
+const char*s=luaL_checklstring(L,1,&l);
+const char*chunkname=luaL_optstring(L,2,s);
+return load_aux(L,luaL_loadbuffer(L,s,l,chunkname));
+}
+static int luaB_loadfile(lua_State*L){
+const char*fname=luaL_optstring(L,1,NULL);
+return load_aux(L,luaL_loadfile(L,fname));
+}
+static int luaB_assert(lua_State*L){
+luaL_checkany(L,1);
+if(!lua_toboolean(L,1))
+return luaL_error(L,"%s",luaL_optstring(L,2,"assertion failed!"));
+return lua_gettop(L);
+}
+static int luaB_unpack(lua_State*L){
+int i,e,n;
+luaL_checktype(L,1,5);
+i=luaL_optint(L,2,1);
+e=luaL_opt(L,luaL_checkint,3,luaL_getn(L,1));
+if(i>e)return 0;
+n=e-i+1;
+if(n<=0||!lua_checkstack(L,n))
+return luaL_error(L,"too many results to unpack");
+lua_rawgeti(L,1,i);
+while(i++<e)
+lua_rawgeti(L,1,i);
+return n;
+}
+static int luaB_pcall(lua_State*L){
+int status;
+luaL_checkany(L,1);
+status=lua_pcall(L,lua_gettop(L)-1,(-1),0);
+lua_pushboolean(L,(status==0));
+lua_insert(L,1);
+return lua_gettop(L);
+}
+static int luaB_newproxy(lua_State*L){
+lua_settop(L,1);
+lua_newuserdata(L,0);
+if(lua_toboolean(L,1)==0)
+return 1;
+else if(lua_isboolean(L,1)){
+lua_newtable(L);
+lua_pushvalue(L,-1);
+lua_pushboolean(L,1);
+lua_rawset(L,lua_upvalueindex(1));
+}
+else{
+int validproxy=0;
+if(lua_getmetatable(L,1)){
+lua_rawget(L,lua_upvalueindex(1));
+validproxy=lua_toboolean(L,-1);
+lua_pop(L,1);
+}
+luaL_argcheck(L,validproxy,1,"boolean or proxy expected");
+lua_getmetatable(L,1);
+}
+lua_setmetatable(L,2);
+return 1;
+}
+static const luaL_Reg base_funcs[]={
+{"assert",luaB_assert},
+{"error",luaB_error},
+{"loadfile",luaB_loadfile},
+{"loadstring",luaB_loadstring},
+{"next",luaB_next},
+{"pcall",luaB_pcall},
+{"rawget",luaB_rawget},
+{"setfenv",luaB_setfenv},
+{"setmetatable",luaB_setmetatable},
+{"tonumber",luaB_tonumber},
+{"type",luaB_type},
+{"unpack",luaB_unpack},
+{NULL,NULL}
+};
+static void auxopen(lua_State*L,const char*name,
+lua_CFunction f,lua_CFunction u){
+lua_pushcfunction(L,u);
+lua_pushcclosure(L,f,1);
+lua_setfield(L,-2,name);
+}
+static void base_open(lua_State*L){
+lua_pushvalue(L,(-10002));
+lua_setglobal(L,"_G");
+luaL_register(L,"_G",base_funcs);
+lua_pushliteral(L,"Lua 5.1");
+lua_setglobal(L,"_VERSION");
+auxopen(L,"ipairs",luaB_ipairs,ipairsaux);
+auxopen(L,"pairs",luaB_pairs,luaB_next);
+lua_createtable(L,0,1);
+lua_pushvalue(L,-1);
+lua_setmetatable(L,-2);
+lua_pushliteral(L,"kv");
+lua_setfield(L,-2,"__mode");
+lua_pushcclosure(L,luaB_newproxy,1);
+lua_setglobal(L,"newproxy");
+}
+static int luaopen_base(lua_State*L){
+base_open(L);
+return 1;
+}
+#define aux_getn(L,n)(luaL_checktype(L,n,5),luaL_getn(L,n))
+static int tinsert(lua_State*L){
+int e=aux_getn(L,1)+1;
+int pos;
+switch(lua_gettop(L)){
+case 2:{
+pos=e;
+break;
+}
+case 3:{
+int i;
+pos=luaL_checkint(L,2);
+if(pos>e)e=pos;
+for(i=e;i>pos;i--){
+lua_rawgeti(L,1,i-1);
+lua_rawseti(L,1,i);
+}
+break;
+}
+default:{
+return luaL_error(L,"wrong number of arguments to "LUA_QL("insert"));
+}
+}
+luaL_setn(L,1,e);
+lua_rawseti(L,1,pos);
+return 0;
+}
+static int tremove(lua_State*L){
+int e=aux_getn(L,1);
+int pos=luaL_optint(L,2,e);
+if(!(1<=pos&&pos<=e))
+return 0;
+luaL_setn(L,1,e-1);
+lua_rawgeti(L,1,pos);
+for(;pos<e;pos++){
+lua_rawgeti(L,1,pos+1);
+lua_rawseti(L,1,pos);
+}
+lua_pushnil(L);
+lua_rawseti(L,1,e);
+return 1;
+}
+static void addfield(lua_State*L,luaL_Buffer*b,int i){
+lua_rawgeti(L,1,i);
+if(!lua_isstring(L,-1))
+luaL_error(L,"invalid value (%s) at index %d in table for "
+LUA_QL("concat"),luaL_typename(L,-1),i);
+luaL_addvalue(b);
+}
+static int tconcat(lua_State*L){
+luaL_Buffer b;
+size_t lsep;
+int i,last;
+const char*sep=luaL_optlstring(L,2,"",&lsep);
+luaL_checktype(L,1,5);
+i=luaL_optint(L,3,1);
+last=luaL_opt(L,luaL_checkint,4,luaL_getn(L,1));
+luaL_buffinit(L,&b);
+for(;i<last;i++){
+addfield(L,&b,i);
+luaL_addlstring(&b,sep,lsep);
+}
+if(i==last)
+addfield(L,&b,i);
+luaL_pushresult(&b);
+return 1;
+}
+static void set2(lua_State*L,int i,int j){
+lua_rawseti(L,1,i);
+lua_rawseti(L,1,j);
+}
+static int sort_comp(lua_State*L,int a,int b){
+if(!lua_isnil(L,2)){
+int res;
+lua_pushvalue(L,2);
+lua_pushvalue(L,a-1);
+lua_pushvalue(L,b-2);
+lua_call(L,2,1);
+res=lua_toboolean(L,-1);
+lua_pop(L,1);
+return res;
+}
+else
+return lua_lessthan(L,a,b);
+}
+static void auxsort(lua_State*L,int l,int u){
+while(l<u){
+int i,j;
+lua_rawgeti(L,1,l);
+lua_rawgeti(L,1,u);
+if(sort_comp(L,-1,-2))
+set2(L,l,u);
+else
+lua_pop(L,2);
+if(u-l==1)break;
+i=(l+u)/2;
+lua_rawgeti(L,1,i);
+lua_rawgeti(L,1,l);
+if(sort_comp(L,-2,-1))
+set2(L,i,l);
+else{
+lua_pop(L,1);
+lua_rawgeti(L,1,u);
+if(sort_comp(L,-1,-2))
+set2(L,i,u);
+else
+lua_pop(L,2);
+}
+if(u-l==2)break;
+lua_rawgeti(L,1,i);
+lua_pushvalue(L,-1);
+lua_rawgeti(L,1,u-1);
+set2(L,i,u-1);
+i=l;j=u-1;
+for(;;){
+while(lua_rawgeti(L,1,++i),sort_comp(L,-1,-2)){
+if(i>u)luaL_error(L,"invalid order function for sorting");
+lua_pop(L,1);
+}
+while(lua_rawgeti(L,1,--j),sort_comp(L,-3,-1)){
+if(j<l)luaL_error(L,"invalid order function for sorting");
+lua_pop(L,1);
+}
+if(j<i){
+lua_pop(L,3);
+break;
+}
+set2(L,i,j);
+}
+lua_rawgeti(L,1,u-1);
+lua_rawgeti(L,1,i);
+set2(L,u-1,i);
+if(i-l<u-i){
+j=l;i=i-1;l=i+2;
+}
+else{
+j=i+1;i=u;u=j-2;
+}
+auxsort(L,j,i);
+}
+}
+static int sort(lua_State*L){
+int n=aux_getn(L,1);
+luaL_checkstack(L,40,"");
+if(!lua_isnoneornil(L,2))
+luaL_checktype(L,2,6);
+lua_settop(L,2);
+auxsort(L,1,n);
+return 0;
+}
+static const luaL_Reg tab_funcs[]={
+{"concat",tconcat},
+{"insert",tinsert},
+{"remove",tremove},
+{"sort",sort},
+{NULL,NULL}
+};
+static int luaopen_table(lua_State*L){
+luaL_register(L,"table",tab_funcs);
+return 1;
+}
+static const char*const fnames[]={"input","output"};
+static int pushresult(lua_State*L,int i,const char*filename){
+int en=errno;
+if(i){
+lua_pushboolean(L,1);
+return 1;
+}
+else{
+lua_pushnil(L);
+if(filename)
+lua_pushfstring(L,"%s: %s",filename,strerror(en));
+else
+lua_pushfstring(L,"%s",strerror(en));
+lua_pushinteger(L,en);
+return 3;
+}
+}
+static void fileerror(lua_State*L,int arg,const char*filename){
+lua_pushfstring(L,"%s: %s",filename,strerror(errno));
+luaL_argerror(L,arg,lua_tostring(L,-1));
+}
+#define tofilep(L)((FILE**)luaL_checkudata(L,1,"FILE*"))
+static int io_type(lua_State*L){
+void*ud;
+luaL_checkany(L,1);
+ud=lua_touserdata(L,1);
+lua_getfield(L,(-10000),"FILE*");
+if(ud==NULL||!lua_getmetatable(L,1)||!lua_rawequal(L,-2,-1))
+lua_pushnil(L);
+else if(*((FILE**)ud)==NULL)
+lua_pushliteral(L,"closed file");
+else
+lua_pushliteral(L,"file");
+return 1;
+}
+static FILE*tofile(lua_State*L){
+FILE**f=tofilep(L);
+if(*f==NULL)
+luaL_error(L,"attempt to use a closed file");
+return*f;
+}
+static FILE**newfile(lua_State*L){
+FILE**pf=(FILE**)lua_newuserdata(L,sizeof(FILE*));
+*pf=NULL;
+luaL_getmetatable(L,"FILE*");
+lua_setmetatable(L,-2);
+return pf;
+}
+static int io_noclose(lua_State*L){
+lua_pushnil(L);
+lua_pushliteral(L,"cannot close standard file");
+return 2;
+}
+static int io_pclose(lua_State*L){
+FILE**p=tofilep(L);
+int ok=lua_pclose(L,*p);
+*p=NULL;
+return pushresult(L,ok,NULL);
+}
+static int io_fclose(lua_State*L){
+FILE**p=tofilep(L);
+int ok=(fclose(*p)==0);
+*p=NULL;
+return pushresult(L,ok,NULL);
+}
+static int aux_close(lua_State*L){
+lua_getfenv(L,1);
+lua_getfield(L,-1,"__close");
+return(lua_tocfunction(L,-1))(L);
+}
+static int io_close(lua_State*L){
+if(lua_isnone(L,1))
+lua_rawgeti(L,(-10001),2);
+tofile(L);
+return aux_close(L);
+}
+static int io_gc(lua_State*L){
+FILE*f=*tofilep(L);
+if(f!=NULL)
+aux_close(L);
+return 0;
+}
+static int io_open(lua_State*L){
+const char*filename=luaL_checkstring(L,1);
+const char*mode=luaL_optstring(L,2,"r");
+FILE**pf=newfile(L);
+*pf=fopen(filename,mode);
+return(*pf==NULL)?pushresult(L,0,filename):1;
+}
+static FILE*getiofile(lua_State*L,int findex){
+FILE*f;
+lua_rawgeti(L,(-10001),findex);
+f=*(FILE**)lua_touserdata(L,-1);
+if(f==NULL)
+luaL_error(L,"standard %s file is closed",fnames[findex-1]);
+return f;
+}
+static int g_iofile(lua_State*L,int f,const char*mode){
+if(!lua_isnoneornil(L,1)){
+const char*filename=lua_tostring(L,1);
+if(filename){
+FILE**pf=newfile(L);
+*pf=fopen(filename,mode);
+if(*pf==NULL)
+fileerror(L,1,filename);
+}
+else{
+tofile(L);
+lua_pushvalue(L,1);
+}
+lua_rawseti(L,(-10001),f);
+}
+lua_rawgeti(L,(-10001),f);
+return 1;
+}
+static int io_input(lua_State*L){
+return g_iofile(L,1,"r");
+}
+static int io_output(lua_State*L){
+return g_iofile(L,2,"w");
+}
+static int io_readline(lua_State*L);
+static void aux_lines(lua_State*L,int idx,int toclose){
+lua_pushvalue(L,idx);
+lua_pushboolean(L,toclose);
+lua_pushcclosure(L,io_readline,2);
+}
+static int f_lines(lua_State*L){
+tofile(L);
+aux_lines(L,1,0);
+return 1;
+}
+static int io_lines(lua_State*L){
+if(lua_isnoneornil(L,1)){
+lua_rawgeti(L,(-10001),1);
+return f_lines(L);
+}
+else{
+const char*filename=luaL_checkstring(L,1);
+FILE**pf=newfile(L);
+*pf=fopen(filename,"r");
+if(*pf==NULL)
+fileerror(L,1,filename);
+aux_lines(L,lua_gettop(L),1);
+return 1;
+}
+}
+static int read_number(lua_State*L,FILE*f){
+lua_Number d;
+if(fscanf(f,"%lf",&d)==1){
+lua_pushnumber(L,d);
+return 1;
+}
+else{
+lua_pushnil(L);
+return 0;
+}
+}
+static int test_eof(lua_State*L,FILE*f){
+int c=getc(f);
+ungetc(c,f);
+lua_pushlstring(L,NULL,0);
+return(c!=EOF);
+}
+static int read_line(lua_State*L,FILE*f){
+luaL_Buffer b;
+luaL_buffinit(L,&b);
+for(;;){
+size_t l;
+char*p=luaL_prepbuffer(&b);
+if(fgets(p,BUFSIZ,f)==NULL){
+luaL_pushresult(&b);
+return(lua_objlen(L,-1)>0);
+}
+l=strlen(p);
+if(l==0||p[l-1]!='\n')
+luaL_addsize(&b,l);
+else{
+luaL_addsize(&b,l-1);
+luaL_pushresult(&b);
+return 1;
+}
+}
+}
+static int read_chars(lua_State*L,FILE*f,size_t n){
+size_t rlen;
+size_t nr;
+luaL_Buffer b;
+luaL_buffinit(L,&b);
+rlen=BUFSIZ;
+do{
+char*p=luaL_prepbuffer(&b);
+if(rlen>n)rlen=n;
+nr=fread(p,sizeof(char),rlen,f);
+luaL_addsize(&b,nr);
+n-=nr;
+}while(n>0&&nr==rlen);
+luaL_pushresult(&b);
+return(n==0||lua_objlen(L,-1)>0);
+}
+static int g_read(lua_State*L,FILE*f,int first){
+int nargs=lua_gettop(L)-1;
+int success;
+int n;
+clearerr(f);
+if(nargs==0){
+success=read_line(L,f);
+n=first+1;
+}
+else{
+luaL_checkstack(L,nargs+20,"too many arguments");
+success=1;
+for(n=first;nargs--&&success;n++){
+if(lua_type(L,n)==3){
+size_t l=(size_t)lua_tointeger(L,n);
+success=(l==0)?test_eof(L,f):read_chars(L,f,l);
+}
+else{
+const char*p=lua_tostring(L,n);
+luaL_argcheck(L,p&&p[0]=='*',n,"invalid option");
+switch(p[1]){
+case'n':
+success=read_number(L,f);
+break;
+case'l':
+success=read_line(L,f);
+break;
+case'a':
+read_chars(L,f,~((size_t)0));
+success=1;
+break;
+default:
+return luaL_argerror(L,n,"invalid format");
+}
+}
+}
+}
+if(ferror(f))
+return pushresult(L,0,NULL);
+if(!success){
+lua_pop(L,1);
+lua_pushnil(L);
+}
+return n-first;
+}
+static int io_read(lua_State*L){
+return g_read(L,getiofile(L,1),1);
+}
+static int f_read(lua_State*L){
+return g_read(L,tofile(L),2);
+}
+static int io_readline(lua_State*L){
+FILE*f=*(FILE**)lua_touserdata(L,lua_upvalueindex(1));
+int sucess;
+if(f==NULL)
+luaL_error(L,"file is already closed");
+sucess=read_line(L,f);
+if(ferror(f))
+return luaL_error(L,"%s",strerror(errno));
+if(sucess)return 1;
+else{
+if(lua_toboolean(L,lua_upvalueindex(2))){
+lua_settop(L,0);
+lua_pushvalue(L,lua_upvalueindex(1));
+aux_close(L);
+}
+return 0;
+}
+}
+static int g_write(lua_State*L,FILE*f,int arg){
+int nargs=lua_gettop(L)-1;
+int status=1;
+for(;nargs--;arg++){
+if(lua_type(L,arg)==3){
+status=status&&
+fprintf(f,"%.14g",lua_tonumber(L,arg))>0;
+}
+else{
+size_t l;
+const char*s=luaL_checklstring(L,arg,&l);
+status=status&&(fwrite(s,sizeof(char),l,f)==l);
+}
+}
+return pushresult(L,status,NULL);
+}
+static int io_write(lua_State*L){
+return g_write(L,getiofile(L,2),1);
+}
+static int f_write(lua_State*L){
+return g_write(L,tofile(L),2);
+}
+static int io_flush(lua_State*L){
+return pushresult(L,fflush(getiofile(L,2))==0,NULL);
+}
+static int f_flush(lua_State*L){
+return pushresult(L,fflush(tofile(L))==0,NULL);
+}
+static const luaL_Reg iolib[]={
+{"close",io_close},
+{"flush",io_flush},
+{"input",io_input},
+{"lines",io_lines},
+{"open",io_open},
+{"output",io_output},
+{"read",io_read},
+{"type",io_type},
+{"write",io_write},
+{NULL,NULL}
+};
+static const luaL_Reg flib[]={
+{"close",io_close},
+{"flush",f_flush},
+{"lines",f_lines},
+{"read",f_read},
+{"write",f_write},
+{"__gc",io_gc},
+{NULL,NULL}
+};
+static void createmeta(lua_State*L){
+luaL_newmetatable(L,"FILE*");
+lua_pushvalue(L,-1);
+lua_setfield(L,-2,"__index");
+luaL_register(L,NULL,flib);
+}
+static void createstdfile(lua_State*L,FILE*f,int k,const char*fname){
+*newfile(L)=f;
+if(k>0){
+lua_pushvalue(L,-1);
+lua_rawseti(L,(-10001),k);
+}
+lua_pushvalue(L,-2);
+lua_setfenv(L,-2);
+lua_setfield(L,-3,fname);
+}
+static void newfenv(lua_State*L,lua_CFunction cls){
+lua_createtable(L,0,1);
+lua_pushcfunction(L,cls);
+lua_setfield(L,-2,"__close");
+}
+static int luaopen_io(lua_State*L){
+createmeta(L);
+newfenv(L,io_fclose);
+lua_replace(L,(-10001));
+luaL_register(L,"io",iolib);
+newfenv(L,io_noclose);
+createstdfile(L,stdin,1,"stdin");
+createstdfile(L,stdout,2,"stdout");
+createstdfile(L,stderr,0,"stderr");
+lua_pop(L,1);
+lua_getfield(L,-1,"popen");
+newfenv(L,io_pclose);
+lua_setfenv(L,-2);
+lua_pop(L,1);
+return 1;
+}
+static int os_pushresult(lua_State*L,int i,const char*filename){
+int en=errno;
+if(i){
+lua_pushboolean(L,1);
+return 1;
+}
+else{
+lua_pushnil(L);
+lua_pushfstring(L,"%s: %s",filename,strerror(en));
+lua_pushinteger(L,en);
+return 3;
+}
+}
+static int os_remove(lua_State*L){
+const char*filename=luaL_checkstring(L,1);
+return os_pushresult(L,remove(filename)==0,filename);
+}
+static int os_exit(lua_State*L){
+exit(luaL_optint(L,1,EXIT_SUCCESS));
+}
+static const luaL_Reg syslib[]={
+{"exit",os_exit},
+{"remove",os_remove},
+{NULL,NULL}
+};
+static int luaopen_os(lua_State*L){
+luaL_register(L,"os",syslib);
+return 1;
+}
+#define uchar(c)((unsigned char)(c))
+static ptrdiff_t posrelat(ptrdiff_t pos,size_t len){
+if(pos<0)pos+=(ptrdiff_t)len+1;
+return(pos>=0)?pos:0;
+}
+static int str_sub(lua_State*L){
+size_t l;
+const char*s=luaL_checklstring(L,1,&l);
+ptrdiff_t start=posrelat(luaL_checkinteger(L,2),l);
+ptrdiff_t end=posrelat(luaL_optinteger(L,3,-1),l);
+if(start<1)start=1;
+if(end>(ptrdiff_t)l)end=(ptrdiff_t)l;
+if(start<=end)
+lua_pushlstring(L,s+start-1,end-start+1);
+else lua_pushliteral(L,"");
+return 1;
+}
+static int str_lower(lua_State*L){
+size_t l;
+size_t i;
+luaL_Buffer b;
+const char*s=luaL_checklstring(L,1,&l);
+luaL_buffinit(L,&b);
+for(i=0;i<l;i++)
+luaL_addchar(&b,tolower(uchar(s[i])));
+luaL_pushresult(&b);
+return 1;
+}
+static int str_upper(lua_State*L){
+size_t l;
+size_t i;
+luaL_Buffer b;
+const char*s=luaL_checklstring(L,1,&l);
+luaL_buffinit(L,&b);
+for(i=0;i<l;i++)
+luaL_addchar(&b,toupper(uchar(s[i])));
+luaL_pushresult(&b);
+return 1;
+}
+static int str_rep(lua_State*L){
+size_t l;
+luaL_Buffer b;
+const char*s=luaL_checklstring(L,1,&l);
+int n=luaL_checkint(L,2);
+luaL_buffinit(L,&b);
+while(n-->0)
+luaL_addlstring(&b,s,l);
+luaL_pushresult(&b);
+return 1;
+}
+static int str_byte(lua_State*L){
+size_t l;
+const char*s=luaL_checklstring(L,1,&l);
+ptrdiff_t posi=posrelat(luaL_optinteger(L,2,1),l);
+ptrdiff_t pose=posrelat(luaL_optinteger(L,3,posi),l);
+int n,i;
+if(posi<=0)posi=1;
+if((size_t)pose>l)pose=l;
+if(posi>pose)return 0;
+n=(int)(pose-posi+1);
+if(posi+n<=pose)
+luaL_error(L,"string slice too long");
+luaL_checkstack(L,n,"string slice too long");
+for(i=0;i<n;i++)
+lua_pushinteger(L,uchar(s[posi+i-1]));
+return n;
+}
+static int str_char(lua_State*L){
+int n=lua_gettop(L);
+int i;
+luaL_Buffer b;
+luaL_buffinit(L,&b);
+for(i=1;i<=n;i++){
+int c=luaL_checkint(L,i);
+luaL_argcheck(L,uchar(c)==c,i,"invalid value");
+luaL_addchar(&b,uchar(c));
+}
+luaL_pushresult(&b);
+return 1;
+}
+typedef struct MatchState{
+const char*src_init;
+const char*src_end;
+lua_State*L;
+int level;
+struct{
+const char*init;
+ptrdiff_t len;
+}capture[32];
+}MatchState;
+static int check_capture(MatchState*ms,int l){
+l-='1';
+if(l<0||l>=ms->level||ms->capture[l].len==(-1))
+return luaL_error(ms->L,"invalid capture index");
+return l;
+}
+static int capture_to_close(MatchState*ms){
+int level=ms->level;
+for(level--;level>=0;level--)
+if(ms->capture[level].len==(-1))return level;
+return luaL_error(ms->L,"invalid pattern capture");
+}
+static const char*classend(MatchState*ms,const char*p){
+switch(*p++){
+case'%':{
+if(*p=='\0')
+luaL_error(ms->L,"malformed pattern (ends with "LUA_QL("%%")")");
+return p+1;
+}
+case'[':{
+if(*p=='^')p++;
+do{
+if(*p=='\0')
+luaL_error(ms->L,"malformed pattern (missing "LUA_QL("]")")");
+if(*(p++)=='%'&&*p!='\0')
+p++;
+}while(*p!=']');
+return p+1;
+}
+default:{
+return p;
+}
+}
+}
+static int match_class(int c,int cl){
+int res;
+switch(tolower(cl)){
+case'a':res=isalpha(c);break;
+case'c':res=iscntrl(c);break;
+case'd':res=isdigit(c);break;
+case'l':res=islower(c);break;
+case'p':res=ispunct(c);break;
+case's':res=isspace(c);break;
+case'u':res=isupper(c);break;
+case'w':res=isalnum(c);break;
+case'x':res=isxdigit(c);break;
+case'z':res=(c==0);break;
+default:return(cl==c);
+}
+return(islower(cl)?res:!res);
+}
+static int matchbracketclass(int c,const char*p,const char*ec){
+int sig=1;
+if(*(p+1)=='^'){
+sig=0;
+p++;
+}
+while(++p<ec){
+if(*p=='%'){
+p++;
+if(match_class(c,uchar(*p)))
+return sig;
+}
+else if((*(p+1)=='-')&&(p+2<ec)){
+p+=2;
+if(uchar(*(p-2))<=c&&c<=uchar(*p))
+return sig;
+}
+else if(uchar(*p)==c)return sig;
+}
+return!sig;
+}
+static int singlematch(int c,const char*p,const char*ep){
+switch(*p){
+case'.':return 1;
+case'%':return match_class(c,uchar(*(p+1)));
+case'[':return matchbracketclass(c,p,ep-1);
+default:return(uchar(*p)==c);
+}
+}
+static const char*match(MatchState*ms,const char*s,const char*p);
+static const char*matchbalance(MatchState*ms,const char*s,
+const char*p){
+if(*p==0||*(p+1)==0)
+luaL_error(ms->L,"unbalanced pattern");
+if(*s!=*p)return NULL;
+else{
+int b=*p;
+int e=*(p+1);
+int cont=1;
+while(++s<ms->src_end){
+if(*s==e){
+if(--cont==0)return s+1;
+}
+else if(*s==b)cont++;
+}
+}
+return NULL;
+}
+static const char*max_expand(MatchState*ms,const char*s,
+const char*p,const char*ep){
+ptrdiff_t i=0;
+while((s+i)<ms->src_end&&singlematch(uchar(*(s+i)),p,ep))
+i++;
+while(i>=0){
+const char*res=match(ms,(s+i),ep+1);
+if(res)return res;
+i--;
+}
+return NULL;
+}
+static const char*min_expand(MatchState*ms,const char*s,
+const char*p,const char*ep){
+for(;;){
+const char*res=match(ms,s,ep+1);
+if(res!=NULL)
+return res;
+else if(s<ms->src_end&&singlematch(uchar(*s),p,ep))
+s++;
+else return NULL;
+}
+}
+static const char*start_capture(MatchState*ms,const char*s,
+const char*p,int what){
+const char*res;
+int level=ms->level;
+if(level>=32)luaL_error(ms->L,"too many captures");
+ms->capture[level].init=s;
+ms->capture[level].len=what;
+ms->level=level+1;
+if((res=match(ms,s,p))==NULL)
+ms->level--;
+return res;
+}
+static const char*end_capture(MatchState*ms,const char*s,
+const char*p){
+int l=capture_to_close(ms);
+const char*res;
+ms->capture[l].len=s-ms->capture[l].init;
+if((res=match(ms,s,p))==NULL)
+ms->capture[l].len=(-1);
+return res;
+}
+static const char*match_capture(MatchState*ms,const char*s,int l){
+size_t len;
+l=check_capture(ms,l);
+len=ms->capture[l].len;
+if((size_t)(ms->src_end-s)>=len&&
+memcmp(ms->capture[l].init,s,len)==0)
+return s+len;
+else return NULL;
+}
+static const char*match(MatchState*ms,const char*s,const char*p){
+init:
+switch(*p){
+case'(':{
+if(*(p+1)==')')
+return start_capture(ms,s,p+2,(-2));
+else
+return start_capture(ms,s,p+1,(-1));
+}
+case')':{
+return end_capture(ms,s,p+1);
+}
+case'%':{
+switch(*(p+1)){
+case'b':{
+s=matchbalance(ms,s,p+2);
+if(s==NULL)return NULL;
+p+=4;goto init;
+}
+case'f':{
+const char*ep;char previous;
+p+=2;
+if(*p!='[')
+luaL_error(ms->L,"missing "LUA_QL("[")" after "
+LUA_QL("%%f")" in pattern");
+ep=classend(ms,p);
+previous=(s==ms->src_init)?'\0':*(s-1);
+if(matchbracketclass(uchar(previous),p,ep-1)||
+!matchbracketclass(uchar(*s),p,ep-1))return NULL;
+p=ep;goto init;
+}
+default:{
+if(isdigit(uchar(*(p+1)))){
+s=match_capture(ms,s,uchar(*(p+1)));
+if(s==NULL)return NULL;
+p+=2;goto init;
+}
+goto dflt;
+}
+}
+}
+case'\0':{
+return s;
+}
+case'$':{
+if(*(p+1)=='\0')
+return(s==ms->src_end)?s:NULL;
+else goto dflt;
+}
+default:dflt:{
+const char*ep=classend(ms,p);
+int m=s<ms->src_end&&singlematch(uchar(*s),p,ep);
+switch(*ep){
+case'?':{
+const char*res;
+if(m&&((res=match(ms,s+1,ep+1))!=NULL))
+return res;
+p=ep+1;goto init;
+}
+case'*':{
+return max_expand(ms,s,p,ep);
+}
+case'+':{
+return(m?max_expand(ms,s+1,p,ep):NULL);
+}
+case'-':{
+return min_expand(ms,s,p,ep);
+}
+default:{
+if(!m)return NULL;
+s++;p=ep;goto init;
+}
+}
+}
+}
+}
+static const char*lmemfind(const char*s1,size_t l1,
+const char*s2,size_t l2){
+if(l2==0)return s1;
+else if(l2>l1)return NULL;
+else{
+const char*init;
+l2--;
+l1=l1-l2;
+while(l1>0&&(init=(const char*)memchr(s1,*s2,l1))!=NULL){
+init++;
+if(memcmp(init,s2+1,l2)==0)
+return init-1;
+else{
+l1-=init-s1;
+s1=init;
+}
+}
+return NULL;
+}
+}
+static void push_onecapture(MatchState*ms,int i,const char*s,
+const char*e){
+if(i>=ms->level){
+if(i==0)
+lua_pushlstring(ms->L,s,e-s);
+else
+luaL_error(ms->L,"invalid capture index");
+}
+else{
+ptrdiff_t l=ms->capture[i].len;
+if(l==(-1))luaL_error(ms->L,"unfinished capture");
+if(l==(-2))
+lua_pushinteger(ms->L,ms->capture[i].init-ms->src_init+1);
+else
+lua_pushlstring(ms->L,ms->capture[i].init,l);
+}
+}
+static int push_captures(MatchState*ms,const char*s,const char*e){
+int i;
+int nlevels=(ms->level==0&&s)?1:ms->level;
+luaL_checkstack(ms->L,nlevels,"too many captures");
+for(i=0;i<nlevels;i++)
+push_onecapture(ms,i,s,e);
+return nlevels;
+}
+static int str_find_aux(lua_State*L,int find){
+size_t l1,l2;
+const char*s=luaL_checklstring(L,1,&l1);
+const char*p=luaL_checklstring(L,2,&l2);
+ptrdiff_t init=posrelat(luaL_optinteger(L,3,1),l1)-1;
+if(init<0)init=0;
+else if((size_t)(init)>l1)init=(ptrdiff_t)l1;
+if(find&&(lua_toboolean(L,4)||
+strpbrk(p,"^$*+?.([%-")==NULL)){
+const char*s2=lmemfind(s+init,l1-init,p,l2);
+if(s2){
+lua_pushinteger(L,s2-s+1);
+lua_pushinteger(L,s2-s+l2);
+return 2;
+}
+}
+else{
+MatchState ms;
+int anchor=(*p=='^')?(p++,1):0;
+const char*s1=s+init;
+ms.L=L;
+ms.src_init=s;
+ms.src_end=s+l1;
+do{
+const char*res;
+ms.level=0;
+if((res=match(&ms,s1,p))!=NULL){
+if(find){
+lua_pushinteger(L,s1-s+1);
+lua_pushinteger(L,res-s);
+return push_captures(&ms,NULL,0)+2;
+}
+else
+return push_captures(&ms,s1,res);
+}
+}while(s1++<ms.src_end&&!anchor);
+}
+lua_pushnil(L);
+return 1;
+}
+static int str_find(lua_State*L){
+return str_find_aux(L,1);
+}
+static int str_match(lua_State*L){
+return str_find_aux(L,0);
+}
+static int gmatch_aux(lua_State*L){
+MatchState ms;
+size_t ls;
+const char*s=lua_tolstring(L,lua_upvalueindex(1),&ls);
+const char*p=lua_tostring(L,lua_upvalueindex(2));
+const char*src;
+ms.L=L;
+ms.src_init=s;
+ms.src_end=s+ls;
+for(src=s+(size_t)lua_tointeger(L,lua_upvalueindex(3));
+src<=ms.src_end;
+src++){
+const char*e;
+ms.level=0;
+if((e=match(&ms,src,p))!=NULL){
+lua_Integer newstart=e-s;
+if(e==src)newstart++;
+lua_pushinteger(L,newstart);
+lua_replace(L,lua_upvalueindex(3));
+return push_captures(&ms,src,e);
+}
+}
+return 0;
+}
+static int gmatch(lua_State*L){
+luaL_checkstring(L,1);
+luaL_checkstring(L,2);
+lua_settop(L,2);
+lua_pushinteger(L,0);
+lua_pushcclosure(L,gmatch_aux,3);
+return 1;
+}
+static void add_s(MatchState*ms,luaL_Buffer*b,const char*s,
+const char*e){
+size_t l,i;
+const char*news=lua_tolstring(ms->L,3,&l);
+for(i=0;i<l;i++){
+if(news[i]!='%')
+luaL_addchar(b,news[i]);
+else{
+i++;
+if(!isdigit(uchar(news[i])))
+luaL_addchar(b,news[i]);
+else if(news[i]=='0')
+luaL_addlstring(b,s,e-s);
+else{
+push_onecapture(ms,news[i]-'1',s,e);
+luaL_addvalue(b);
+}
+}
+}
+}
+static void add_value(MatchState*ms,luaL_Buffer*b,const char*s,
+const char*e){
+lua_State*L=ms->L;
+switch(lua_type(L,3)){
+case 3:
+case 4:{
+add_s(ms,b,s,e);
+return;
+}
+case 6:{
+int n;
+lua_pushvalue(L,3);
+n=push_captures(ms,s,e);
+lua_call(L,n,1);
+break;
+}
+case 5:{
+push_onecapture(ms,0,s,e);
+lua_gettable(L,3);
+break;
+}
+}
+if(!lua_toboolean(L,-1)){
+lua_pop(L,1);
+lua_pushlstring(L,s,e-s);
+}
+else if(!lua_isstring(L,-1))
+luaL_error(L,"invalid replacement value (a %s)",luaL_typename(L,-1));
+luaL_addvalue(b);
+}
+static int str_gsub(lua_State*L){
+size_t srcl;
+const char*src=luaL_checklstring(L,1,&srcl);
+const char*p=luaL_checkstring(L,2);
+int tr=lua_type(L,3);
+int max_s=luaL_optint(L,4,srcl+1);
+int anchor=(*p=='^')?(p++,1):0;
+int n=0;
+MatchState ms;
+luaL_Buffer b;
+luaL_argcheck(L,tr==3||tr==4||
+tr==6||tr==5,3,
+"string/function/table expected");
+luaL_buffinit(L,&b);
+ms.L=L;
+ms.src_init=src;
+ms.src_end=src+srcl;
+while(n<max_s){
+const char*e;
+ms.level=0;
+e=match(&ms,src,p);
+if(e){
+n++;
+add_value(&ms,&b,src,e);
+}
+if(e&&e>src)
+src=e;
+else if(src<ms.src_end)
+luaL_addchar(&b,*src++);
+else break;
+if(anchor)break;
+}
+luaL_addlstring(&b,src,ms.src_end-src);
+luaL_pushresult(&b);
+lua_pushinteger(L,n);
+return 2;
+}
+static void addquoted(lua_State*L,luaL_Buffer*b,int arg){
+size_t l;
+const char*s=luaL_checklstring(L,arg,&l);
+luaL_addchar(b,'"');
+while(l--){
+switch(*s){
+case'"':case'\\':case'\n':{
+luaL_addchar(b,'\\');
+luaL_addchar(b,*s);
+break;
+}
+case'\r':{
+luaL_addlstring(b,"\\r",2);
+break;
+}
+case'\0':{
+luaL_addlstring(b,"\\000",4);
+break;
+}
+default:{
+luaL_addchar(b,*s);
+break;
+}
+}
+s++;
+}
+luaL_addchar(b,'"');
+}
+static const char*scanformat(lua_State*L,const char*strfrmt,char*form){
+const char*p=strfrmt;
+while(*p!='\0'&&strchr("-+ #0",*p)!=NULL)p++;
+if((size_t)(p-strfrmt)>=sizeof("-+ #0"))
+luaL_error(L,"invalid format (repeated flags)");
+if(isdigit(uchar(*p)))p++;
+if(isdigit(uchar(*p)))p++;
+if(*p=='.'){
+p++;
+if(isdigit(uchar(*p)))p++;
+if(isdigit(uchar(*p)))p++;
+}
+if(isdigit(uchar(*p)))
+luaL_error(L,"invalid format (width or precision too long)");
+*(form++)='%';
+strncpy(form,strfrmt,p-strfrmt+1);
+form+=p-strfrmt+1;
+*form='\0';
+return p;
+}
+static void addintlen(char*form){
+size_t l=strlen(form);
+char spec=form[l-1];
+strcpy(form+l-1,"l");
+form[l+sizeof("l")-2]=spec;
+form[l+sizeof("l")-1]='\0';
+}
+static int str_format(lua_State*L){
+int top=lua_gettop(L);
+int arg=1;
+size_t sfl;
+const char*strfrmt=luaL_checklstring(L,arg,&sfl);
+const char*strfrmt_end=strfrmt+sfl;
+luaL_Buffer b;
+luaL_buffinit(L,&b);
+while(strfrmt<strfrmt_end){
+if(*strfrmt!='%')
+luaL_addchar(&b,*strfrmt++);
+else if(*++strfrmt=='%')
+luaL_addchar(&b,*strfrmt++);
+else{
+char form[(sizeof("-+ #0")+sizeof("l")+10)];
+char buff[512];
+if(++arg>top)
+luaL_argerror(L,arg,"no value");
+strfrmt=scanformat(L,strfrmt,form);
+switch(*strfrmt++){
+case'c':{
+sprintf(buff,form,(int)luaL_checknumber(L,arg));
+break;
+}
+case'd':case'i':{
+addintlen(form);
+sprintf(buff,form,(long)luaL_checknumber(L,arg));
+break;
+}
+case'o':case'u':case'x':case'X':{
+addintlen(form);
+sprintf(buff,form,(unsigned long)luaL_checknumber(L,arg));
+break;
+}
+case'e':case'E':case'f':
+case'g':case'G':{
+sprintf(buff,form,(double)luaL_checknumber(L,arg));
+break;
+}
+case'q':{
+addquoted(L,&b,arg);
+continue;
+}
+case's':{
+size_t l;
+const char*s=luaL_checklstring(L,arg,&l);
+if(!strchr(form,'.')&&l>=100){
+lua_pushvalue(L,arg);
+luaL_addvalue(&b);
+continue;
+}
+else{
+sprintf(buff,form,s);
+break;
+}
+}
+default:{
+return luaL_error(L,"invalid option "LUA_QL("%%%c")" to "
+LUA_QL("format"),*(strfrmt-1));
+}
+}
+luaL_addlstring(&b,buff,strlen(buff));
+}
+}
+luaL_pushresult(&b);
+return 1;
+}
+static const luaL_Reg strlib[]={
+{"byte",str_byte},
+{"char",str_char},
+{"find",str_find},
+{"format",str_format},
+{"gmatch",gmatch},
+{"gsub",str_gsub},
+{"lower",str_lower},
+{"match",str_match},
+{"rep",str_rep},
+{"sub",str_sub},
+{"upper",str_upper},
+{NULL,NULL}
+};
+static void createmetatable(lua_State*L){
+lua_createtable(L,0,1);
+lua_pushliteral(L,"");
+lua_pushvalue(L,-2);
+lua_setmetatable(L,-2);
+lua_pop(L,1);
+lua_pushvalue(L,-2);
+lua_setfield(L,-2,"__index");
+lua_pop(L,1);
+}
+static int luaopen_string(lua_State*L){
+luaL_register(L,"string",strlib);
+createmetatable(L);
+return 1;
+}
+static const luaL_Reg lualibs[]={
+{"",luaopen_base},
+{"table",luaopen_table},
+{"io",luaopen_io},
+{"os",luaopen_os},
+{"string",luaopen_string},
+{NULL,NULL}
+};
+static void luaL_openlibs(lua_State*L){
+const luaL_Reg*lib=lualibs;
+for(;lib->func;lib++){
+lua_pushcfunction(L,lib->func);
+lua_pushstring(L,lib->name);
+lua_call(L,1,0);
+}
+}
+typedef unsigned int UB;
+static UB barg(lua_State*L,int idx){
+union{lua_Number n;U64 b;}bn;
+bn.n=lua_tonumber(L,idx)+6755399441055744.0;
+if(bn.n==0.0&&!lua_isnumber(L,idx))luaL_typerror(L,idx,"number");
+return(UB)bn.b;
+}
+#define BRET(b)lua_pushnumber(L,(lua_Number)(int)(b));return 1;
+static int tobit(lua_State*L){
+BRET(barg(L,1))}
+static int bnot(lua_State*L){
+BRET(~barg(L,1))}
+static int band(lua_State*L){
+int i;UB b=barg(L,1);for(i=lua_gettop(L);i>1;i--)b&=barg(L,i);BRET(b)}
+static int bor(lua_State*L){
+int i;UB b=barg(L,1);for(i=lua_gettop(L);i>1;i--)b|=barg(L,i);BRET(b)}
+static int bxor(lua_State*L){
+int i;UB b=barg(L,1);for(i=lua_gettop(L);i>1;i--)b^=barg(L,i);BRET(b)}
+static int lshift(lua_State*L){
+UB b=barg(L,1),n=barg(L,2)&31;BRET(b<<n)}
+static int rshift(lua_State*L){
+UB b=barg(L,1),n=barg(L,2)&31;BRET(b>>n)}
+static int arshift(lua_State*L){
+UB b=barg(L,1),n=barg(L,2)&31;BRET((int)b>>n)}
+static int rol(lua_State*L){
+UB b=barg(L,1),n=barg(L,2)&31;BRET((b<<n)|(b>>(32-n)))}
+static int ror(lua_State*L){
+UB b=barg(L,1),n=barg(L,2)&31;BRET((b>>n)|(b<<(32-n)))}
+static int bswap(lua_State*L){
+UB b=barg(L,1);b=(b>>24)|((b>>8)&0xff00)|((b&0xff00)<<8)|(b<<24);BRET(b)}
+static int tohex(lua_State*L){
+UB b=barg(L,1);
+int n=lua_isnone(L,2)?8:(int)barg(L,2);
+const char*hexdigits="0123456789abcdef";
+char buf[8];
+int i;
+if(n<0){n=-n;hexdigits="0123456789ABCDEF";}
+if(n>8)n=8;
+for(i=(int)n;--i>=0;){buf[i]=hexdigits[b&15];b>>=4;}
+lua_pushlstring(L,buf,(size_t)n);
+return 1;
+}
+static const struct luaL_Reg bitlib[]={
+{"tobit",tobit},
+{"bnot",bnot},
+{"band",band},
+{"bor",bor},
+{"bxor",bxor},
+{"lshift",lshift},
+{"rshift",rshift},
+{"arshift",arshift},
+{"rol",rol},
+{"ror",ror},
+{"bswap",bswap},
+{"tohex",tohex},
+{NULL,NULL}
+};
+int main(int argc,char**argv){
+lua_State*L=luaL_newstate();
+int i;
+luaL_openlibs(L);
+luaL_register(L,"bit",bitlib);
+if(argc<2)return sizeof(void*);
+lua_createtable(L,0,1);
+lua_pushstring(L,argv[1]);
+lua_rawseti(L,-2,0);
+lua_setglobal(L,"arg");
+if(luaL_loadfile(L,argv[1]))
+goto err;
+for(i=2;i<argc;i++)
+lua_pushstring(L,argv[i]);
+if(lua_pcall(L,argc-2,0,0)){
+err:
+fprintf(stderr,"Error: %s\n",lua_tostring(L,-1));
+return 1;
+}
+lua_close(L);
+return 0;
+}

meson.build

-project('fml', 'c',
-  version : '0.1',
-  default_options : ['warning_level=3'])
+project(
+  'fml',
+  'c',
+  version: '0.1',
+  default_options: ['c_std=c11', 'warning_level=2'],
+)
+
+cc = meson.get_compiler('c')
+m_dep = cc.find_library('m', required : false)
+
+minilua = executable(
+  'minilua',
+  sources : files(
+    'dynasm/minilua.c',
+  ),
+  dependencies : m_dep,
+)
+
+dynasm = generator(
+  minilua,
+  output : '@BASENAME@-dasm.c',
+  arguments : [meson.current_source_dir() + '/dynasm/dynasm.lua', '-o', '@OUTPUT@', '@INPUT@'],
+)
 exe = executable('fml',
-  'example_main.c',
-  'arena.c',
-  'parser.c',
-  install : true)
+  sources: files(
+    'reference/arena.c',
+    'reference/parser.c',
+    'src/main.c',
+  ) + dynasm.process('src/jit.c'),
+  include_directories: include_directories(
+    'src',
+    'reference',
+    'dynasm',
+  ),
+  install: true,
+)

arena.c → reference/arena.c

@@ -35,8 +35,10 @@ arena_alloc(Arena *arena, size_t size)
 		new->prev = arena->current;
 		arena->current = new;
 		pos = align(sizeof(ArenaChunk), 8);
+		ASAN_POISON_MEMORY_REGION(((unsigned char *) new) + pos, new_size - pos);
 	}
 	arena->current->pos = pos + size;
+	ASAN_UNPOISON_MEMORY_REGION(((unsigned char *) arena->current) + pos, size);
 	return ((unsigned char *) arena->current) + pos;
 }
@@ -57,6 +59,7 @@ arena_restore(Arena *arena, size_t pos)
 		arena->prev_size_sum -= chunk->size;
 	}
 	chunk->pos = pos - arena->prev_size_sum;
+	ASAN_POISON_MEMORY_REGION(((unsigned char *) chunk) + chunk->pos, chunk->size - chunk->pos);
 	arena->current = chunk;
 }

arena.h → reference/arena.h

@@ -128,6 +128,28 @@ size_t garena_cnt_from_(GArena *arena, size_t start, size_t elem_size);
 	} while (0)
+// ASAN integeration
+
+#ifndef __has_feature
+#define __has_feature(x) 0
+#endif
+
+#if defined(__SANITIZE_ADDRESS__) || __has_feature(address_sanitizer)
+// https://github.com/google/sanitizers/wiki/AddressSanitizerManualPoisoning
+void __asan_poison_memory_region(void const volatile *addr, size_t size);
+void __asan_unpoison_memory_region(void const volatile *addr, size_t size);
+#define ASAN_POISON_MEMORY_REGION(addr, size) \
+	__asan_poison_memory_region((addr), (size))
+#define ASAN_UNPOISON_MEMORY_REGION(addr, size) \
+	__asan_unpoison_memory_region((addr), (size))
+#else
+#define ASAN_POISON_MEMORY_REGION(addr, size) \
+	((void) (addr), (void) (size))
+#define ASAN_UNPOISON_MEMORY_REGION(addr, size) \
+	((void) (addr), (void) (size))
+#endif
+
+
 // PRIVATE IMPLEMENTATION DETAILS

parser.c → reference/parser.c

@@ -13,17 +13,31 @@ unreachable(char *file, size_t line)
 	exit(EXIT_FAILURE);
 }
-bool str_eq(Str a, Str b)
+bool
+str_eq(Str a, Str b)
 {
 	return a.len == b.len && memcmp(a.str, b.str, a.len) == 0;
 }
-int str_cmp(Str a, Str b)
+int
+str_cmp(Str a, Str b)
 {
 	int cmp = memcmp(a.str, b.str, a.len < b.len ? a.len : b.len);
 	return cmp == 0 ? (a.len > b.len) - (b.len > a.len) : cmp;
 }
+
+bool
+time_get(struct timespec *ts)
+{
+#if defined(_WIN32) && defined(__MINGW32__)
+	return clock_gettime(CLOCK_REALTIME, ts) == 0;
+#else
+	return timespec_get(ts, TIME_UTC) == TIME_UTC;
+#endif
+}
+
+
 typedef struct {
 	const u8 *pos;
 	const u8 *end;
@@ -176,7 +190,7 @@ lex_next(Lexer *lexer, Token *token)
 		u8 c = *lexer->pos;
 		switch (state) {
 		case LS_START: switch (c) {
-			case ' ': case '\t': case '\n': start += 1; break;
+			case ' ': case '\t': case '\n': case '\r': start += 1; break;
 			case ALPHA: state = LS_IDENTIFIER; break;
 			case DIGIT: state = LS_NUMBER; break;
 			case '"': state = LS_STRING; start += 1; break;
@@ -222,6 +236,7 @@ lex_next(Lexer *lexer, Token *token)
 			default: tok = TK_SLASH; goto prev_done;
 		} break;
 		case LS_LINE_COMMENT: switch (c) {
+			// Also works with CR LF
 			case '\n': state = LS_START; start = lexer->pos + 1; break;
 		} break;
 		case LS_BLOCK_COMMENT: switch (c) {
@@ -838,6 +853,7 @@ parser_error_cb(void *user_data, const u8 *err_pos, const char *msg, va_list ap)
 	size_t line = 0;
 	const u8 *pos = src->str;
 	for (; pos < err_pos; pos++) {
+		// Also works with CR LF
 		if (*pos == '\n') {
 			line_start = pos + 1;
 			line++;

parser.h → reference/parser.h

@@ -10,13 +10,14 @@
 #include <stdbool.h>
 #include <stdalign.h>
 #include <string.h>
+#include <time.h>
 #include "arena.h"
 // See the bottom of this file for parser API.
 // This header mainly defines the AST emitted by the reference FML parser and
-// a few utility types.
+// a few utility types and functions.
 typedef uint8_t  u8;
 typedef uint16_t u16;
@@ -46,6 +47,25 @@ bool str_eq(Str a, Str b);
 int str_cmp(Str a, Str b);
+// Get current time and save it into `ts`. Platform details may differ, but
+// `struct timespec` should be at least similar to the following:
+//
+//         struct timespec {
+//                 long long tv_sec; /* seconds */
+//                 long tv_nsec; /* nanoseconds */
+//         }
+//
+// An example of use:
+//
+//         struct timespec ts;
+//         if (!time_get(&ts)) {
+//         	exit(1);
+//         }
+//         printf("%lld%09ld\n", ts.tv_sec, ts.tv_nsec);
+//
+bool time_get(struct timespec *ts);
+
+
 // See https://courses.fit.cvut.cz/NI-RUN/specs/ast.html for details about the
 // AST.

src/jit.c

+// for glibc < 2.37
+#define _BSD_SOURCE
+#define _DEFAULT_SOURCE
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <assert.h>
+
+#if _WIN32
+#include <windows.h>
+#else
+#include <sys/mman.h>
+#if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
+#define MAP_ANONYMOUS MAP_ANON
+#endif
+#endif
+
+#if defined(__APPLE__) && defined(__MACH__)
+#define MAP_JIT_VALUE MAP_JIT
+void sys_icache_invalidate(void *start, size_t len);
+#else
+#define MAP_JIT_VALUE 0
+#endif
+
+#include "arena.h"
+
+#include "jit.h" // dasm_proto.h
+
+#include "dasm_x86.h"
+
+//|.arch x64
+//|.actionlist my_dasm_actions
+//|.section code
+//|.globals DASM_LBL_
+
+// Avoid IDE warnings about names that will defined after DynASM preprocessing
+// step.
+//|| #define PREPROCESSED_WITH_DASM
+#ifndef PREPROCESSED_WITH_DASM
+unsigned char my_dasm_actions[] = {};
+#define DASM_SECTION_CODE 0
+#define DASM_MAXSECTION 1
+enum {
+	DASM_LBL__MAX,
+};
+#endif
+
+static void *
+dasm_link_and_encode(Dst_DECL)
+{
+	size_t size;
+	void* code;
+	assert(dasm_checkstep(Dst, 0) == DASM_S_OK);
+	assert(dasm_link(Dst, &size) == DASM_S_OK);
+#ifdef _WIN32
+	code = VirtualAlloc(0, size, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
+#else
+	code = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_JIT_VALUE, -1, 0);
+#endif
+	assert(dasm_encode(Dst, code) == DASM_S_OK);
+#ifdef _WIN32
+	DWORD original;
+	VirtualProtect(code, size, PAGE_EXECUTE_READ, &original);
+#else
+	mprotect(code, size, PROT_READ | PROT_EXEC);
+#endif
+#if defined(__APPLE__) && defined(__MACH__)
+	sys_icache_invalidate(code, size);
+#endif
+	return code;
+}
+
+void
+jit_init(Dst_DECL, Arena *arena)
+{
+	(void) arena;
+	dasm_init(Dst, DASM_MAXSECTION);
+	ms->global_labels = arena_alloc(arena, DASM_LBL__MAX * sizeof(ms->global_labels[0]));
+	dasm_setupglobal(Dst, ms->global_labels, DASM_LBL__MAX);
+}
+
+void
+jit_free(Dst_DECL)
+{
+	dasm_free(Dst);
+}
+
+int_plus_const_func *
+jit_addition_with_constant(Dst_DECL, int constant)
+{
+	(void) constant;
+	dasm_setup(Dst, my_dasm_actions);
+	//| lea eax, [rdi + constant]
+	//| ret
+	return (int_plus_const_func *) dasm_link_and_encode(Dst);
+}

src/jit.h

+#pragma once
+
+#include "arena.h"
+#include "mystate.h"
+
+#define Dst       ms
+#define Dst_DECL  MyState *ms
+#define Dst_REF   (ms->ds)
+
+#define DASM_CHECKS
+#include "dasm_proto.h"
+
+typedef int (int_plus_const_func)(int);
+
+void jit_init(Dst_DECL, Arena *arena);
+void jit_free(Dst_DECL);
+int_plus_const_func *jit_addition_with_constant(Dst_DECL, int constant);

example_main.c → src/main.c

 #include <stdio.h>
+#include <assert.h>
 #include "arena.h"
 #include "parser.h"
+#include "jit.h"
+
 int main(int argc, char **argv) {
+#ifdef _WIN32
+	// Set standard output mode to "binary" on Windows.
+	// https://nullprogram.com/blog/2021/12/30/
+	int _setmode(int, int);
+	_setmode(1, 0x8000);
+#endif
+
 	if (argc < 2) {
 		fprintf(stderr, "Error: expected at least one argument\n");
 		return 1;
@@ -22,6 +32,14 @@ int main(int argc, char **argv) {
 	printf("Hello world!\n");
+	MyState my_state = {0};
+	jit_init(&my_state, &arena);
+
+	int_plus_const_func *add_5 = jit_addition_with_constant(&my_state, 5);
+	assert(add_5(3) == 8);
+
+	jit_free(&my_state);
+
 	arena_destroy(&arena);
 	return 0;

src/mystate.h

+#pragma once
+
+// Can't include "dasm_proto.h" here, since that would not see Dst anad Dst_DECL
+// definitions from "jit.h" and use default ones. And "jit.h" can't be included
+// here, since it requires "mystate.h".
+typedef struct dasm_State dasm_State;
+
+typedef struct {
+	dasm_State *ds;
+	void **global_labels;
+} MyState;