1 files changed, 0 insertions, 457 deletions

diff --git a/lib/LuaJIT/src/lj_bcread.c b/lib/LuaJIT/src/lj_bcread.c
deleted file mode 100644
index 48c5e7c..0000000
--- a/lib/LuaJIT/src/lj_bcread.c
+++ /dev/null
@@ -1,457 +0,0 @@
-/*
-** Bytecode reader.
-** Copyright (C) 2005-2017 Mike Pall. See Copyright Notice in luajit.h
-*/
-
-#define lj_bcread_c
-#define LUA_CORE
-
-#include "lj_obj.h"
-#include "lj_gc.h"
-#include "lj_err.h"
-#include "lj_buf.h"
-#include "lj_str.h"
-#include "lj_tab.h"
-#include "lj_bc.h"
-#if LJ_HASFFI
-#include "lj_ctype.h"
-#include "lj_cdata.h"
-#include "lualib.h"
-#endif
-#include "lj_lex.h"
-#include "lj_bcdump.h"
-#include "lj_state.h"
-#include "lj_strfmt.h"
-
-/* Reuse some lexer fields for our own purposes. */
-#define bcread_flags(ls)	ls->level
-#define bcread_swap(ls) \
-  ((bcread_flags(ls) & BCDUMP_F_BE) != LJ_BE*BCDUMP_F_BE)
-#define bcread_oldtop(L, ls)	restorestack(L, ls->lastline)
-#define bcread_savetop(L, ls, top) \
-  ls->lastline = (BCLine)savestack(L, (top))
-
-/* -- Input buffer handling ----------------------------------------------- */
-
-/* Throw reader error. */
-static LJ_NOINLINE void bcread_error(LexState *ls, ErrMsg em)
-{
-  lua_State *L = ls->L;
-  const char *name = ls->chunkarg;
-  if (*name == BCDUMP_HEAD1) name = "(binary)";
-  else if (*name == '@' || *name == '=') name++;
-  lj_strfmt_pushf(L, "%s: %s", name, err2msg(em));
-  lj_err_throw(L, LUA_ERRSYNTAX);
-}
-
-/* Refill buffer. */
-static LJ_NOINLINE void bcread_fill(LexState *ls, MSize len, int need)
-{
-  lua_assert(len != 0);
-  if (len > LJ_MAX_BUF || ls->c < 0)
-    bcread_error(ls, LJ_ERR_BCBAD);
-  do {
-    const char *buf;
-    size_t sz;
-    char *p = sbufB(&ls->sb);
-    MSize n = (MSize)(ls->pe - ls->p);
-    if (n) {  /* Copy remainder to buffer. */
-      if (sbuflen(&ls->sb)) {  /* Move down in buffer. */
-	lua_assert(ls->pe == sbufP(&ls->sb));
-	if (ls->p != p) memmove(p, ls->p, n);
-      } else {  /* Copy from buffer provided by reader. */
-	p = lj_buf_need(&ls->sb, len);
-	memcpy(p, ls->p, n);
-      }
-      ls->p = p;
-      ls->pe = p + n;
-    }
-    setsbufP(&ls->sb, p + n);
-    buf = ls->rfunc(ls->L, ls->rdata, &sz);  /* Get more data from reader. */
-    if (buf == NULL || sz == 0) {  /* EOF? */
-      if (need) bcread_error(ls, LJ_ERR_BCBAD);
-      ls->c = -1;  /* Only bad if we get called again. */
-      break;
-    }
-    if (n) {  /* Append to buffer. */
-      n += (MSize)sz;
-      p = lj_buf_need(&ls->sb, n < len ? len : n);
-      memcpy(sbufP(&ls->sb), buf, sz);
-      setsbufP(&ls->sb, p + n);
-      ls->p = p;
-      ls->pe = p + n;
-    } else {  /* Return buffer provided by reader. */
-      ls->p = buf;
-      ls->pe = buf + sz;
-    }
-  } while (ls->p + len > ls->pe);
-}
-
-/* Need a certain number of bytes. */
-static LJ_AINLINE void bcread_need(LexState *ls, MSize len)
-{
-  if (LJ_UNLIKELY(ls->p + len > ls->pe))
-    bcread_fill(ls, len, 1);
-}
-
-/* Want to read up to a certain number of bytes, but may need less. */
-static LJ_AINLINE void bcread_want(LexState *ls, MSize len)
-{
-  if (LJ_UNLIKELY(ls->p + len > ls->pe))
-    bcread_fill(ls, len, 0);
-}
-
-/* Return memory block from buffer. */
-static LJ_AINLINE uint8_t *bcread_mem(LexState *ls, MSize len)
-{
-  uint8_t *p = (uint8_t *)ls->p;
-  ls->p += len;
-  lua_assert(ls->p <= ls->pe);
-  return p;
-}
-
-/* Copy memory block from buffer. */
-static void bcread_block(LexState *ls, void *q, MSize len)
-{
-  memcpy(q, bcread_mem(ls, len), len);
-}
-
-/* Read byte from buffer. */
-static LJ_AINLINE uint32_t bcread_byte(LexState *ls)
-{
-  lua_assert(ls->p < ls->pe);
-  return (uint32_t)(uint8_t)*ls->p++;
-}
-
-/* Read ULEB128 value from buffer. */
-static LJ_AINLINE uint32_t bcread_uleb128(LexState *ls)
-{
-  uint32_t v = lj_buf_ruleb128(&ls->p);
-  lua_assert(ls->p <= ls->pe);
-  return v;
-}
-
-/* Read top 32 bits of 33 bit ULEB128 value from buffer. */
-static uint32_t bcread_uleb128_33(LexState *ls)
-{
-  const uint8_t *p = (const uint8_t *)ls->p;
-  uint32_t v = (*p++ >> 1);
-  if (LJ_UNLIKELY(v >= 0x40)) {
-    int sh = -1;
-    v &= 0x3f;
-    do {
-     v |= ((*p & 0x7f) << (sh += 7));
-   } while (*p++ >= 0x80);
-  }
-  ls->p = (char *)p;
-  lua_assert(ls->p <= ls->pe);
-  return v;
-}
-
-/* -- Bytecode reader ----------------------------------------------------- */
-
-/* Read debug info of a prototype. */
-static void bcread_dbg(LexState *ls, GCproto *pt, MSize sizedbg)
-{
-  void *lineinfo = (void *)proto_lineinfo(pt);
-  bcread_block(ls, lineinfo, sizedbg);
-  /* Swap lineinfo if the endianess differs. */
-  if (bcread_swap(ls) && pt->numline >= 256) {
-    MSize i, n = pt->sizebc-1;
-    if (pt->numline < 65536) {
-      uint16_t *p = (uint16_t *)lineinfo;
-      for (i = 0; i < n; i++) p[i] = (uint16_t)((p[i] >> 8)|(p[i] << 8));
-    } else {
-      uint32_t *p = (uint32_t *)lineinfo;
-      for (i = 0; i < n; i++) p[i] = lj_bswap(p[i]);
-    }
-  }
-}
-
-/* Find pointer to varinfo. */
-static const void *bcread_varinfo(GCproto *pt)
-{
-  const uint8_t *p = proto_uvinfo(pt);
-  MSize n = pt->sizeuv;
-  if (n) while (*p++ || --n) ;
-  return p;
-}
-
-/* Read a single constant key/value of a template table. */
-static void bcread_ktabk(LexState *ls, TValue *o)
-{
-  MSize tp = bcread_uleb128(ls);
-  if (tp >= BCDUMP_KTAB_STR) {
-    MSize len = tp - BCDUMP_KTAB_STR;
-    const char *p = (const char *)bcread_mem(ls, len);
-    setstrV(ls->L, o, lj_str_new(ls->L, p, len));
-  } else if (tp == BCDUMP_KTAB_INT) {
-    setintV(o, (int32_t)bcread_uleb128(ls));
-  } else if (tp == BCDUMP_KTAB_NUM) {
-    o->u32.lo = bcread_uleb128(ls);
-    o->u32.hi = bcread_uleb128(ls);
-  } else {
-    lua_assert(tp <= BCDUMP_KTAB_TRUE);
-    setpriV(o, ~tp);
-  }
-}
-
-/* Read a template table. */
-static GCtab *bcread_ktab(LexState *ls)
-{
-  MSize narray = bcread_uleb128(ls);
-  MSize nhash = bcread_uleb128(ls);
-  GCtab *t = lj_tab_new(ls->L, narray, hsize2hbits(nhash));
-  if (narray) {  /* Read array entries. */
-    MSize i;
-    TValue *o = tvref(t->array);
-    for (i = 0; i < narray; i++, o++)
-      bcread_ktabk(ls, o);
-  }
-  if (nhash) {  /* Read hash entries. */
-    MSize i;
-    for (i = 0; i < nhash; i++) {
-      TValue key;
-      bcread_ktabk(ls, &key);
-      lua_assert(!tvisnil(&key));
-      bcread_ktabk(ls, lj_tab_set(ls->L, t, &key));
-    }
-  }
-  return t;
-}
-
-/* Read GC constants of a prototype. */
-static void bcread_kgc(LexState *ls, GCproto *pt, MSize sizekgc)
-{
-  MSize i;
-  GCRef *kr = mref(pt->k, GCRef) - (ptrdiff_t)sizekgc;
-  for (i = 0; i < sizekgc; i++, kr++) {
-    MSize tp = bcread_uleb128(ls);
-    if (tp >= BCDUMP_KGC_STR) {
-      MSize len = tp - BCDUMP_KGC_STR;
-      const char *p = (const char *)bcread_mem(ls, len);
-      setgcref(*kr, obj2gco(lj_str_new(ls->L, p, len)));
-    } else if (tp == BCDUMP_KGC_TAB) {
-      setgcref(*kr, obj2gco(bcread_ktab(ls)));
-#if LJ_HASFFI
-    } else if (tp != BCDUMP_KGC_CHILD) {
-      CTypeID id = tp == BCDUMP_KGC_COMPLEX ? CTID_COMPLEX_DOUBLE :
-		   tp == BCDUMP_KGC_I64 ? CTID_INT64 : CTID_UINT64;
-      CTSize sz = tp == BCDUMP_KGC_COMPLEX ? 16 : 8;
-      GCcdata *cd = lj_cdata_new_(ls->L, id, sz);
-      TValue *p = (TValue *)cdataptr(cd);
-      setgcref(*kr, obj2gco(cd));
-      p[0].u32.lo = bcread_uleb128(ls);
-      p[0].u32.hi = bcread_uleb128(ls);
-      if (tp == BCDUMP_KGC_COMPLEX) {
-	p[1].u32.lo = bcread_uleb128(ls);
-	p[1].u32.hi = bcread_uleb128(ls);
-      }
-#endif
-    } else {
-      lua_State *L = ls->L;
-      lua_assert(tp == BCDUMP_KGC_CHILD);
-      if (L->top <= bcread_oldtop(L, ls))  /* Stack underflow? */
-	bcread_error(ls, LJ_ERR_BCBAD);
-      L->top--;
-      setgcref(*kr, obj2gco(protoV(L->top)));
-    }
-  }
-}
-
-/* Read number constants of a prototype. */
-static void bcread_knum(LexState *ls, GCproto *pt, MSize sizekn)
-{
-  MSize i;
-  TValue *o = mref(pt->k, TValue);
-  for (i = 0; i < sizekn; i++, o++) {
-    int isnum = (ls->p[0] & 1);
-    uint32_t lo = bcread_uleb128_33(ls);
-    if (isnum) {
-      o->u32.lo = lo;
-      o->u32.hi = bcread_uleb128(ls);
-    } else {
-      setintV(o, lo);
-    }
-  }
-}
-
-/* Read bytecode instructions. */
-static void bcread_bytecode(LexState *ls, GCproto *pt, MSize sizebc)
-{
-  BCIns *bc = proto_bc(pt);
-  bc[0] = BCINS_AD((pt->flags & PROTO_VARARG) ? BC_FUNCV : BC_FUNCF,
-		   pt->framesize, 0);
-  bcread_block(ls, bc+1, (sizebc-1)*(MSize)sizeof(BCIns));
-  /* Swap bytecode instructions if the endianess differs. */
-  if (bcread_swap(ls)) {
-    MSize i;
-    for (i = 1; i < sizebc; i++) bc[i] = lj_bswap(bc[i]);
-  }
-}
-
-/* Read upvalue refs. */
-static void bcread_uv(LexState *ls, GCproto *pt, MSize sizeuv)
-{
-  if (sizeuv) {
-    uint16_t *uv = proto_uv(pt);
-    bcread_block(ls, uv, sizeuv*2);
-    /* Swap upvalue refs if the endianess differs. */
-    if (bcread_swap(ls)) {
-      MSize i;
-      for (i = 0; i < sizeuv; i++)
-	uv[i] = (uint16_t)((uv[i] >> 8)|(uv[i] << 8));
-    }
-  }
-}
-
-/* Read a prototype. */
-GCproto *lj_bcread_proto(LexState *ls)
-{
-  GCproto *pt;
-  MSize framesize, numparams, flags, sizeuv, sizekgc, sizekn, sizebc, sizept;
-  MSize ofsk, ofsuv, ofsdbg;
-  MSize sizedbg = 0;
-  BCLine firstline = 0, numline = 0;
-
-  /* Read prototype header. */
-  flags = bcread_byte(ls);
-  numparams = bcread_byte(ls);
-  framesize = bcread_byte(ls);
-  sizeuv = bcread_byte(ls);
-  sizekgc = bcread_uleb128(ls);
-  sizekn = bcread_uleb128(ls);
-  sizebc = bcread_uleb128(ls) + 1;
-  if (!(bcread_flags(ls) & BCDUMP_F_STRIP)) {
-    sizedbg = bcread_uleb128(ls);
-    if (sizedbg) {
-      firstline = bcread_uleb128(ls);
-      numline = bcread_uleb128(ls);
-    }
-  }
-
-  /* Calculate total size of prototype including all colocated arrays. */
-  sizept = (MSize)sizeof(GCproto) +
-	   sizebc*(MSize)sizeof(BCIns) +
-	   sizekgc*(MSize)sizeof(GCRef);
-  sizept = (sizept + (MSize)sizeof(TValue)-1) & ~((MSize)sizeof(TValue)-1);
-  ofsk = sizept; sizept += sizekn*(MSize)sizeof(TValue);
-  ofsuv = sizept; sizept += ((sizeuv+1)&~1)*2;
-  ofsdbg = sizept; sizept += sizedbg;
-
-  /* Allocate prototype object and initialize its fields. */
-  pt = (GCproto *)lj_mem_newgco(ls->L, (MSize)sizept);
-  pt->gct = ~LJ_TPROTO;
-  pt->numparams = (uint8_t)numparams;
-  pt->framesize = (uint8_t)framesize;
-  pt->sizebc = sizebc;
-  setmref(pt->k, (char *)pt + ofsk);
-  setmref(pt->uv, (char *)pt + ofsuv);
-  pt->sizekgc = 0;  /* Set to zero until fully initialized. */
-  pt->sizekn = sizekn;
-  pt->sizept = sizept;
-  pt->sizeuv = (uint8_t)sizeuv;
-  pt->flags = (uint8_t)flags;
-  pt->trace = 0;
-  setgcref(pt->chunkname, obj2gco(ls->chunkname));
-
-  /* Close potentially uninitialized gap between bc and kgc. */
-  *(uint32_t *)((char *)pt + ofsk - sizeof(GCRef)*(sizekgc+1)) = 0;
-
-  /* Read bytecode instructions and upvalue refs. */
-  bcread_bytecode(ls, pt, sizebc);
-  bcread_uv(ls, pt, sizeuv);
-
-  /* Read constants. */
-  bcread_kgc(ls, pt, sizekgc);
-  pt->sizekgc = sizekgc;
-  bcread_knum(ls, pt, sizekn);
-
-  /* Read and initialize debug info. */
-  pt->firstline = firstline;
-  pt->numline = numline;
-  if (sizedbg) {
-    MSize sizeli = (sizebc-1) << (numline < 256 ? 0 : numline < 65536 ? 1 : 2);
-    setmref(pt->lineinfo, (char *)pt + ofsdbg);
-    setmref(pt->uvinfo, (char *)pt + ofsdbg + sizeli);
-    bcread_dbg(ls, pt, sizedbg);
-    setmref(pt->varinfo, bcread_varinfo(pt));
-  } else {
-    setmref(pt->lineinfo, NULL);
-    setmref(pt->uvinfo, NULL);
-    setmref(pt->varinfo, NULL);
-  }
-  return pt;
-}
-
-/* Read and check header of bytecode dump. */
-static int bcread_header(LexState *ls)
-{
-  uint32_t flags;
-  bcread_want(ls, 3+5+5);
-  if (bcread_byte(ls) != BCDUMP_HEAD2 ||
-      bcread_byte(ls) != BCDUMP_HEAD3 ||
-      bcread_byte(ls) != BCDUMP_VERSION) return 0;
-  bcread_flags(ls) = flags = bcread_uleb128(ls);
-  if ((flags & ~(BCDUMP_F_KNOWN)) != 0) return 0;
-  if ((flags & BCDUMP_F_FR2) != LJ_FR2*BCDUMP_F_FR2) return 0;
-  if ((flags & BCDUMP_F_FFI)) {
-#if LJ_HASFFI
-    lua_State *L = ls->L;
-    if (!ctype_ctsG(G(L))) {
-      ptrdiff_t oldtop = savestack(L, L->top);
-      luaopen_ffi(L);  /* Load FFI library on-demand. */
-      L->top = restorestack(L, oldtop);
-    }
-#else
-    return 0;
-#endif
-  }
-  if ((flags & BCDUMP_F_STRIP)) {
-    ls->chunkname = lj_str_newz(ls->L, ls->chunkarg);
-  } else {
-    MSize len = bcread_uleb128(ls);
-    bcread_need(ls, len);
-    ls->chunkname = lj_str_new(ls->L, (const char *)bcread_mem(ls, len), len);
-  }
-  return 1;  /* Ok. */
-}
-
-/* Read a bytecode dump. */
-GCproto *lj_bcread(LexState *ls)
-{
-  lua_State *L = ls->L;
-  lua_assert(ls->c == BCDUMP_HEAD1);
-  bcread_savetop(L, ls, L->top);
-  lj_buf_reset(&ls->sb);
-  /* Check for a valid bytecode dump header. */
-  if (!bcread_header(ls))
-    bcread_error(ls, LJ_ERR_BCFMT);
-  for (;;) {  /* Process all prototypes in the bytecode dump. */
-    GCproto *pt;
-    MSize len;
-    const char *startp;
-    /* Read length. */
-    if (ls->p < ls->pe && ls->p[0] == 0) {  /* Shortcut EOF. */
-      ls->p++;
-      break;
-    }
-    bcread_want(ls, 5);
-    len = bcread_uleb128(ls);
-    if (!len) break;  /* EOF */
-    bcread_need(ls, len);
-    startp = ls->p;
-    pt = lj_bcread_proto(ls);
-    if (ls->p != startp + len)
-      bcread_error(ls, LJ_ERR_BCBAD);
-    setprotoV(L, L->top, pt);
-    incr_top(L);
-  }
-  if ((int32_t)(2*(uint32_t)(ls->pe - ls->p)) > 0 ||
-      L->top-1 != bcread_oldtop(L, ls))
-    bcread_error(ls, LJ_ERR_BCBAD);
-  /* Pop off last prototype. */
-  L->top--;
-  return protoV(L->top);
-}
-