From 637177eb1397ef1800027bccd50dbdc1af29a15b Mon Sep 17 00:00:00 2001
From: David Walter Seikel
Date: Mon, 13 Jan 2014 21:08:31 +1000
Subject: Remove LuaJIT source, we can use packaged LuaJIT 2.0 release now.

Also some cleanups related to the other library removals.
---
 libraries/luajit-2.0/src/lj_api.c | 1220 -------------------------------------
 1 file changed, 1220 deletions(-)
 delete mode 100644 libraries/luajit-2.0/src/lj_api.c

(limited to 'libraries/luajit-2.0/src/lj_api.c')

diff --git a/libraries/luajit-2.0/src/lj_api.c b/libraries/luajit-2.0/src/lj_api.c
deleted file mode 100644
index 5ef2dff..0000000
--- a/libraries/luajit-2.0/src/lj_api.c
+++ /dev/null
@@ -1,1220 +0,0 @@
-/*
-** Public Lua/C API.
-** Copyright (C) 2005-2011 Mike Pall. See Copyright Notice in luajit.h
-**
-** Major portions taken verbatim or adapted from the Lua interpreter.
-** Copyright (C) 1994-2008 Lua.org, PUC-Rio. See Copyright Notice in lua.h
-*/
-
-#define lj_api_c
-#define LUA_CORE
-
-#include "lj_obj.h"
-#include "lj_gc.h"
-#include "lj_err.h"
-#include "lj_debug.h"
-#include "lj_str.h"
-#include "lj_tab.h"
-#include "lj_func.h"
-#include "lj_udata.h"
-#include "lj_meta.h"
-#include "lj_state.h"
-#include "lj_bc.h"
-#include "lj_frame.h"
-#include "lj_trace.h"
-#include "lj_vm.h"
-#include "lj_lex.h"
-#include "lj_bcdump.h"
-#include "lj_parse.h"
-
-/* -- Common helper functions --------------------------------------------- */
-
-#define api_checknelems(L, n)		api_check(L, (n) <= (L->top - L->base))
-#define api_checkvalidindex(L, i)	api_check(L, (i) != niltv(L))
-
-static TValue *index2adr(lua_State *L, int idx)
-{
-  if (idx > 0) {
-    TValue *o = L->base + (idx - 1);
-    return o < L->top ? o : niltv(L);
-  } else if (idx > LUA_REGISTRYINDEX) {
-    api_check(L, idx != 0 && -idx <= L->top - L->base);
-    return L->top + idx;
-  } else if (idx == LUA_GLOBALSINDEX) {
-    TValue *o = &G(L)->tmptv;
-    settabV(L, o, tabref(L->env));
-    return o;
-  } else if (idx == LUA_REGISTRYINDEX) {
-    return registry(L);
-  } else {
-    GCfunc *fn = curr_func(L);
-    api_check(L, fn->c.gct == ~LJ_TFUNC && !isluafunc(fn));
-    if (idx == LUA_ENVIRONINDEX) {
-      TValue *o = &G(L)->tmptv;
-      settabV(L, o, tabref(fn->c.env));
-      return o;
-    } else {
-      idx = LUA_GLOBALSINDEX - idx;
-      return idx <= fn->c.nupvalues ? &fn->c.upvalue[idx-1] : niltv(L);
-    }
-  }
-}
-
-static TValue *stkindex2adr(lua_State *L, int idx)
-{
-  if (idx > 0) {
-    TValue *o = L->base + (idx - 1);
-    return o < L->top ? o : niltv(L);
-  } else {
-    api_check(L, idx != 0 && -idx <= L->top - L->base);
-    return L->top + idx;
-  }
-}
-
-static GCtab *getcurrenv(lua_State *L)
-{
-  GCfunc *fn = curr_func(L);
-  return fn->c.gct == ~LJ_TFUNC ? tabref(fn->c.env) : tabref(L->env);
-}
-
-/* -- Miscellaneous API functions ----------------------------------------- */
-
-LUA_API int lua_status(lua_State *L)
-{
-  return L->status;
-}
-
-LUA_API int lua_checkstack(lua_State *L, int size)
-{
-  if (size > LUAI_MAXCSTACK || (L->top - L->base + size) > LUAI_MAXCSTACK) {
-    return 0;  /* Stack overflow. */
-  } else if (size > 0) {
-    lj_state_checkstack(L, (MSize)size);
-  }
-  return 1;
-}
-
-LUALIB_API void luaL_checkstack(lua_State *L, int size, const char *msg)
-{
-  if (!lua_checkstack(L, size))
-    lj_err_callerv(L, LJ_ERR_STKOVM, msg);
-}
-
-LUA_API void lua_xmove(lua_State *from, lua_State *to, int n)
-{
-  TValue *f, *t;
-  if (from == to) return;
-  api_checknelems(from, n);
-  api_check(from, G(from) == G(to));
-  lj_state_checkstack(to, (MSize)n);
-  f = from->top;
-  t = to->top = to->top + n;
-  while (--n >= 0) copyTV(to, --t, --f);
-  from->top = f;
-}
-
-/* -- Stack manipulation -------------------------------------------------- */
-
-LUA_API int lua_gettop(lua_State *L)
-{
-  return (int)(L->top - L->base);
-}
-
-LUA_API void lua_settop(lua_State *L, int idx)
-{
-  if (idx >= 0) {
-    api_check(L, idx <= tvref(L->maxstack) - L->base);
-    if (L->base + idx > L->top) {
-      if (L->base + idx >= tvref(L->maxstack))
-	lj_state_growstack(L, (MSize)idx - (MSize)(L->top - L->base));
-      do { setnilV(L->top++); } while (L->top < L->base + idx);
-    } else {
-      L->top = L->base + idx;
-    }
-  } else {
-    api_check(L, -(idx+1) <= (L->top - L->base));
-    L->top += idx+1;  /* Shrinks top (idx < 0). */
-  }
-}
-
-LUA_API void lua_remove(lua_State *L, int idx)
-{
-  TValue *p = stkindex2adr(L, idx);
-  api_checkvalidindex(L, p);
-  while (++p < L->top) copyTV(L, p-1, p);
-  L->top--;
-}
-
-LUA_API void lua_insert(lua_State *L, int idx)
-{
-  TValue *q, *p = stkindex2adr(L, idx);
-  api_checkvalidindex(L, p);
-  for (q = L->top; q > p; q--) copyTV(L, q, q-1);
-  copyTV(L, p, L->top);
-}
-
-LUA_API void lua_replace(lua_State *L, int idx)
-{
-  api_checknelems(L, 1);
-  if (idx == LUA_GLOBALSINDEX) {
-    api_check(L, tvistab(L->top-1));
-    /* NOBARRIER: A thread (i.e. L) is never black. */
-    setgcref(L->env, obj2gco(tabV(L->top-1)));
-  } else if (idx == LUA_ENVIRONINDEX) {
-    GCfunc *fn = curr_func(L);
-    if (fn->c.gct != ~LJ_TFUNC)
-      lj_err_msg(L, LJ_ERR_NOENV);
-    api_check(L, tvistab(L->top-1));
-    setgcref(fn->c.env, obj2gco(tabV(L->top-1)));
-    lj_gc_barrier(L, fn, L->top-1);
-  } else {
-    TValue *o = index2adr(L, idx);
-    api_checkvalidindex(L, o);
-    copyTV(L, o, L->top-1);
-    if (idx < LUA_GLOBALSINDEX)  /* Need a barrier for upvalues. */
-      lj_gc_barrier(L, curr_func(L), L->top-1);
-  }
-  L->top--;
-}
-
-LUA_API void lua_pushvalue(lua_State *L, int idx)
-{
-  copyTV(L, L->top, index2adr(L, idx));
-  incr_top(L);
-}
-
-/* -- Stack getters ------------------------------------------------------- */
-
-LUA_API int lua_type(lua_State *L, int idx)
-{
-  cTValue *o = index2adr(L, idx);
-  if (tvisnumber(o)) {
-    return LUA_TNUMBER;
-#if LJ_64
-  } else if (tvislightud(o)) {
-    return LUA_TLIGHTUSERDATA;
-#endif
-  } else if (o == niltv(L)) {
-    return LUA_TNONE;
-  } else {  /* Magic internal/external tag conversion. ORDER LJ_T */
-    uint32_t t = ~itype(o);
-#if LJ_64
-    int tt = (int)((U64x(75a06,98042110) >> 4*t) & 15u);
-#else
-    int tt = (int)(((t < 8 ? 0x98042110u : 0x75a06u) >> 4*(t&7)) & 15u);
-#endif
-    lua_assert(tt != LUA_TNIL || tvisnil(o));
-    return tt;
-  }
-}
-
-LUALIB_API void luaL_checktype(lua_State *L, int idx, int tt)
-{
-  if (lua_type(L, idx) != tt)
-    lj_err_argt(L, idx, tt);
-}
-
-LUALIB_API void luaL_checkany(lua_State *L, int idx)
-{
-  if (index2adr(L, idx) == niltv(L))
-    lj_err_arg(L, idx, LJ_ERR_NOVAL);
-}
-
-LUA_API const char *lua_typename(lua_State *L, int t)
-{
-  UNUSED(L);
-  return lj_obj_typename[t+1];
-}
-
-LUA_API int lua_iscfunction(lua_State *L, int idx)
-{
-  cTValue *o = index2adr(L, idx);
-  return tvisfunc(o) && !isluafunc(funcV(o));
-}
-
-LUA_API int lua_isnumber(lua_State *L, int idx)
-{
-  cTValue *o = index2adr(L, idx);
-  TValue tmp;
-  return (tvisnumber(o) || (tvisstr(o) && lj_str_tonumber(strV(o), &tmp)));
-}
-
-LUA_API int lua_isstring(lua_State *L, int idx)
-{
-  cTValue *o = index2adr(L, idx);
-  return (tvisstr(o) || tvisnumber(o));
-}
-
-LUA_API int lua_isuserdata(lua_State *L, int idx)
-{
-  cTValue *o = index2adr(L, idx);
-  return (tvisudata(o) || tvislightud(o));
-}
-
-LUA_API int lua_rawequal(lua_State *L, int idx1, int idx2)
-{
-  cTValue *o1 = index2adr(L, idx1);
-  cTValue *o2 = index2adr(L, idx2);
-  return (o1 == niltv(L) || o2 == niltv(L)) ? 0 : lj_obj_equal(o1, o2);
-}
-
-LUA_API int lua_equal(lua_State *L, int idx1, int idx2)
-{
-  cTValue *o1 = index2adr(L, idx1);
-  cTValue *o2 = index2adr(L, idx2);
-  if (tvisint(o1) && tvisint(o2)) {
-    return intV(o1) == intV(o2);
-  } else if (tvisnumber(o1) && tvisnumber(o2)) {
-    return numberVnum(o1) == numberVnum(o2);
-  } else if (itype(o1) != itype(o2)) {
-    return 0;
-  } else if (tvispri(o1)) {
-    return o1 != niltv(L) && o2 != niltv(L);
-#if LJ_64
-  } else if (tvislightud(o1)) {
-    return o1->u64 == o2->u64;
-#endif
-  } else if (gcrefeq(o1->gcr, o2->gcr)) {
-    return 1;
-  } else if (!tvistabud(o1)) {
-    return 0;
-  } else {
-    TValue *base = lj_meta_equal(L, gcV(o1), gcV(o2), 0);
-    if ((uintptr_t)base <= 1) {
-      return (int)(uintptr_t)base;
-    } else {
-      L->top = base+2;
-      lj_vm_call(L, base, 1+1);
-      L->top -= 2;
-      return tvistruecond(L->top+1);
-    }
-  }
-}
-
-LUA_API int lua_lessthan(lua_State *L, int idx1, int idx2)
-{
-  cTValue *o1 = index2adr(L, idx1);
-  cTValue *o2 = index2adr(L, idx2);
-  if (o1 == niltv(L) || o2 == niltv(L)) {
-    return 0;
-  } else if (tvisint(o1) && tvisint(o2)) {
-    return intV(o1) < intV(o2);
-  } else if (tvisnumber(o1) && tvisnumber(o2)) {
-    return numberVnum(o1) < numberVnum(o2);
-  } else {
-    TValue *base = lj_meta_comp(L, o1, o2, 0);
-    if ((uintptr_t)base <= 1) {
-      return (int)(uintptr_t)base;
-    } else {
-      L->top = base+2;
-      lj_vm_call(L, base, 1+1);
-      L->top -= 2;
-      return tvistruecond(L->top+1);
-    }
-  }
-}
-
-LUA_API lua_Number lua_tonumber(lua_State *L, int idx)
-{
-  cTValue *o = index2adr(L, idx);
-  TValue tmp;
-  if (LJ_LIKELY(tvisnumber(o)))
-    return numberVnum(o);
-  else if (tvisstr(o) && lj_str_tonum(strV(o), &tmp))
-    return numV(&tmp);
-  else
-    return 0;
-}
-
-LUALIB_API lua_Number luaL_checknumber(lua_State *L, int idx)
-{
-  cTValue *o = index2adr(L, idx);
-  TValue tmp;
-  if (LJ_LIKELY(tvisnumber(o)))
-    return numberVnum(o);
-  else if (!(tvisstr(o) && lj_str_tonum(strV(o), &tmp)))
-    lj_err_argt(L, idx, LUA_TNUMBER);
-  return numV(&tmp);
-}
-
-LUALIB_API lua_Number luaL_optnumber(lua_State *L, int idx, lua_Number def)
-{
-  cTValue *o = index2adr(L, idx);
-  TValue tmp;
-  if (LJ_LIKELY(tvisnumber(o)))
-    return numberVnum(o);
-  else if (tvisnil(o))
-    return def;
-  else if (!(tvisstr(o) && lj_str_tonum(strV(o), &tmp)))
-    lj_err_argt(L, idx, LUA_TNUMBER);
-  return numV(&tmp);
-}
-
-LUA_API lua_Integer lua_tointeger(lua_State *L, int idx)
-{
-  cTValue *o = index2adr(L, idx);
-  TValue tmp;
-  lua_Number n;
-  if (LJ_LIKELY(tvisint(o))) {
-    return intV(o);
-  } else if (LJ_LIKELY(tvisnum(o))) {
-    n = numV(o);
-  } else {
-    if (!(tvisstr(o) && lj_str_tonumber(strV(o), &tmp)))
-      return 0;
-    if (tvisint(&tmp))
-      return (lua_Integer)intV(&tmp);
-    n = numV(&tmp);
-  }
-#if LJ_64
-  return (lua_Integer)n;
-#else
-  return lj_num2int(n);
-#endif
-}
-
-LUALIB_API lua_Integer luaL_checkinteger(lua_State *L, int idx)
-{
-  cTValue *o = index2adr(L, idx);
-  TValue tmp;
-  lua_Number n;
-  if (LJ_LIKELY(tvisint(o))) {
-    return intV(o);
-  } else if (LJ_LIKELY(tvisnum(o))) {
-    n = numV(o);
-  } else {
-    if (!(tvisstr(o) && lj_str_tonumber(strV(o), &tmp)))
-      lj_err_argt(L, idx, LUA_TNUMBER);
-    if (tvisint(&tmp))
-      return (lua_Integer)intV(&tmp);
-    n = numV(&tmp);
-  }
-#if LJ_64
-  return (lua_Integer)n;
-#else
-  return lj_num2int(n);
-#endif
-}
-
-LUALIB_API lua_Integer luaL_optinteger(lua_State *L, int idx, lua_Integer def)
-{
-  cTValue *o = index2adr(L, idx);
-  TValue tmp;
-  lua_Number n;
-  if (LJ_LIKELY(tvisint(o))) {
-    return intV(o);
-  } else if (LJ_LIKELY(tvisnum(o))) {
-    n = numV(o);
-  } else if (tvisnil(o)) {
-    return def;
-  } else {
-    if (!(tvisstr(o) && lj_str_tonumber(strV(o), &tmp)))
-      lj_err_argt(L, idx, LUA_TNUMBER);
-    if (tvisint(&tmp))
-      return (lua_Integer)intV(&tmp);
-    n = numV(&tmp);
-  }
-#if LJ_64
-  return (lua_Integer)n;
-#else
-  return lj_num2int(n);
-#endif
-}
-
-LUA_API int lua_toboolean(lua_State *L, int idx)
-{
-  cTValue *o = index2adr(L, idx);
-  return tvistruecond(o);
-}
-
-LUA_API const char *lua_tolstring(lua_State *L, int idx, size_t *len)
-{
-  TValue *o = index2adr(L, idx);
-  GCstr *s;
-  if (LJ_LIKELY(tvisstr(o))) {
-    s = strV(o);
-  } else if (tvisnumber(o)) {
-    lj_gc_check(L);
-    o = index2adr(L, idx);  /* GC may move the stack. */
-    s = lj_str_fromnumber(L, o);
-    setstrV(L, o, s);
-  } else {
-    if (len != NULL) *len = 0;
-    return NULL;
-  }
-  if (len != NULL) *len = s->len;
-  return strdata(s);
-}
-
-LUALIB_API const char *luaL_checklstring(lua_State *L, int idx, size_t *len)
-{
-  TValue *o = index2adr(L, idx);
-  GCstr *s;
-  if (LJ_LIKELY(tvisstr(o))) {
-    s = strV(o);
-  } else if (tvisnumber(o)) {
-    lj_gc_check(L);
-    o = index2adr(L, idx);  /* GC may move the stack. */
-    s = lj_str_fromnumber(L, o);
-    setstrV(L, o, s);
-  } else {
-    lj_err_argt(L, idx, LUA_TSTRING);
-  }
-  if (len != NULL) *len = s->len;
-  return strdata(s);
-}
-
-LUALIB_API const char *luaL_optlstring(lua_State *L, int idx,
-				       const char *def, size_t *len)
-{
-  TValue *o = index2adr(L, idx);
-  GCstr *s;
-  if (LJ_LIKELY(tvisstr(o))) {
-    s = strV(o);
-  } else if (tvisnil(o)) {
-    if (len != NULL) *len = def ? strlen(def) : 0;
-    return def;
-  } else if (tvisnumber(o)) {
-    lj_gc_check(L);
-    o = index2adr(L, idx);  /* GC may move the stack. */
-    s = lj_str_fromnumber(L, o);
-    setstrV(L, o, s);
-  } else {
-    lj_err_argt(L, idx, LUA_TSTRING);
-  }
-  if (len != NULL) *len = s->len;
-  return strdata(s);
-}
-
-LUALIB_API int luaL_checkoption(lua_State *L, int idx, const char *def,
-				const char *const lst[])
-{
-  ptrdiff_t i;
-  const char *s = lua_tolstring(L, idx, NULL);
-  if (s == NULL && (s = def) == NULL)
-    lj_err_argt(L, idx, LUA_TSTRING);
-  for (i = 0; lst[i]; i++)
-    if (strcmp(lst[i], s) == 0)
-      return (int)i;
-  lj_err_argv(L, idx, LJ_ERR_INVOPTM, s);
-}
-
-LUA_API size_t lua_objlen(lua_State *L, int idx)
-{
-  TValue *o = index2adr(L, idx);
-  if (tvisstr(o)) {
-    return strV(o)->len;
-  } else if (tvistab(o)) {
-    return (size_t)lj_tab_len(tabV(o));
-  } else if (tvisudata(o)) {
-    return udataV(o)->len;
-  } else if (tvisnumber(o)) {
-    GCstr *s = lj_str_fromnumber(L, o);
-    setstrV(L, o, s);
-    return s->len;
-  } else {
-    return 0;
-  }
-}
-
-LUA_API lua_CFunction lua_tocfunction(lua_State *L, int idx)
-{
-  cTValue *o = index2adr(L, idx);
-  if (tvisfunc(o)) {
-    BCOp op = bc_op(*mref(funcV(o)->c.pc, BCIns));
-    if (op == BC_FUNCC || op == BC_FUNCCW)
-      return funcV(o)->c.f;
-  }
-  return NULL;
-}
-
-LUA_API void *lua_touserdata(lua_State *L, int idx)
-{
-  cTValue *o = index2adr(L, idx);
-  if (tvisudata(o))
-    return uddata(udataV(o));
-  else if (tvislightud(o))
-    return lightudV(o);
-  else
-    return NULL;
-}
-
-LUA_API lua_State *lua_tothread(lua_State *L, int idx)
-{
-  cTValue *o = index2adr(L, idx);
-  return (!tvisthread(o)) ? NULL : threadV(o);
-}
-
-LUA_API const void *lua_topointer(lua_State *L, int idx)
-{
-  cTValue *o = index2adr(L, idx);
-  if (tvisudata(o))
-    return uddata(udataV(o));
-  else if (tvislightud(o))
-    return lightudV(o);
-  else if (tviscdata(o))
-    return cdataptr(cdataV(o));
-  else if (tvisgcv(o))
-    return gcV(o);
-  else
-    return NULL;
-}
-
-/* -- Stack setters (object creation) ------------------------------------- */
-
-LUA_API void lua_pushnil(lua_State *L)
-{
-  setnilV(L->top);
-  incr_top(L);
-}
-
-LUA_API void lua_pushnumber(lua_State *L, lua_Number n)
-{
-  setnumV(L->top, n);
-  if (LJ_UNLIKELY(tvisnan(L->top)))
-    setnanV(L->top);  /* Canonicalize injected NaNs. */
-  incr_top(L);
-}
-
-LUA_API void lua_pushinteger(lua_State *L, lua_Integer n)
-{
-  setintptrV(L->top, n);
-  incr_top(L);
-}
-
-LUA_API void lua_pushlstring(lua_State *L, const char *str, size_t len)
-{
-  GCstr *s;
-  lj_gc_check(L);
-  s = lj_str_new(L, str, len);
-  setstrV(L, L->top, s);
-  incr_top(L);
-}
-
-LUA_API void lua_pushstring(lua_State *L, const char *str)
-{
-  if (str == NULL) {
-    setnilV(L->top);
-  } else {
-    GCstr *s;
-    lj_gc_check(L);
-    s = lj_str_newz(L, str);
-    setstrV(L, L->top, s);
-  }
-  incr_top(L);
-}
-
-LUA_API const char *lua_pushvfstring(lua_State *L, const char *fmt,
-				     va_list argp)
-{
-  lj_gc_check(L);
-  return lj_str_pushvf(L, fmt, argp);
-}
-
-LUA_API const char *lua_pushfstring(lua_State *L, const char *fmt, ...)
-{
-  const char *ret;
-  va_list argp;
-  lj_gc_check(L);
-  va_start(argp, fmt);
-  ret = lj_str_pushvf(L, fmt, argp);
-  va_end(argp);
-  return ret;
-}
-
-LUA_API void lua_pushcclosure(lua_State *L, lua_CFunction f, int n)
-{
-  GCfunc *fn;
-  lj_gc_check(L);
-  api_checknelems(L, n);
-  fn = lj_func_newC(L, (MSize)n, getcurrenv(L));
-  fn->c.f = f;
-  L->top -= n;
-  while (n--)
-    copyTV(L, &fn->c.upvalue[n], L->top+n);
-  setfuncV(L, L->top, fn);
-  lua_assert(iswhite(obj2gco(fn)));
-  incr_top(L);
-}
-
-LUA_API void lua_pushboolean(lua_State *L, int b)
-{
-  setboolV(L->top, (b != 0));
-  incr_top(L);
-}
-
-LUA_API void lua_pushlightuserdata(lua_State *L, void *p)
-{
-  setlightudV(L->top, checklightudptr(L, p));
-  incr_top(L);
-}
-
-LUA_API void lua_createtable(lua_State *L, int narray, int nrec)
-{
-  GCtab *t;
-  lj_gc_check(L);
-  t = lj_tab_new(L, (uint32_t)(narray > 0 ? narray+1 : 0), hsize2hbits(nrec));
-  settabV(L, L->top, t);
-  incr_top(L);
-}
-
-LUALIB_API int luaL_newmetatable(lua_State *L, const char *tname)
-{
-  GCtab *regt = tabV(registry(L));
-  TValue *tv = lj_tab_setstr(L, regt, lj_str_newz(L, tname));
-  if (tvisnil(tv)) {
-    GCtab *mt = lj_tab_new(L, 0, 1);
-    settabV(L, tv, mt);
-    settabV(L, L->top++, mt);
-    lj_gc_anybarriert(L, regt);
-    return 1;
-  } else {
-    copyTV(L, L->top++, tv);
-    return 0;
-  }
-}
-
-LUA_API int lua_pushthread(lua_State *L)
-{
-  setthreadV(L, L->top, L);
-  incr_top(L);
-  return (mainthread(G(L)) == L);
-}
-
-LUA_API lua_State *lua_newthread(lua_State *L)
-{
-  lua_State *L1;
-  lj_gc_check(L);
-  L1 = lj_state_new(L);
-  setthreadV(L, L->top, L1);
-  incr_top(L);
-  return L1;
-}
-
-LUA_API void *lua_newuserdata(lua_State *L, size_t size)
-{
-  GCudata *ud;
-  lj_gc_check(L);
-  if (size > LJ_MAX_UDATA)
-    lj_err_msg(L, LJ_ERR_UDATAOV);
-  ud = lj_udata_new(L, (MSize)size, getcurrenv(L));
-  setudataV(L, L->top, ud);
-  incr_top(L);
-  return uddata(ud);
-}
-
-LUA_API void lua_concat(lua_State *L, int n)
-{
-  api_checknelems(L, n);
-  if (n >= 2) {
-    n--;
-    do {
-      TValue *top = lj_meta_cat(L, L->top-1, n);
-      if (top == NULL) {
-	L->top -= n;
-	break;
-      }
-      n -= (int)(L->top - top);
-      L->top = top+2;
-      lj_vm_call(L, top, 1+1);
-      L->top--;
-      copyTV(L, L->top-1, L->top);
-    } while (--n > 0);
-  } else if (n == 0) {  /* Push empty string. */
-    setstrV(L, L->top, &G(L)->strempty);
-    incr_top(L);
-  }
-  /* else n == 1: nothing to do. */
-}
-
-/* -- Object getters ------------------------------------------------------ */
-
-LUA_API void lua_gettable(lua_State *L, int idx)
-{
-  cTValue *v, *t = index2adr(L, idx);
-  api_checkvalidindex(L, t);
-  v = lj_meta_tget(L, t, L->top-1);
-  if (v == NULL) {
-    L->top += 2;
-    lj_vm_call(L, L->top-2, 1+1);
-    L->top -= 2;
-    v = L->top+1;
-  }
-  copyTV(L, L->top-1, v);
-}
-
-LUA_API void lua_getfield(lua_State *L, int idx, const char *k)
-{
-  cTValue *v, *t = index2adr(L, idx);
-  TValue key;
-  api_checkvalidindex(L, t);
-  setstrV(L, &key, lj_str_newz(L, k));
-  v = lj_meta_tget(L, t, &key);
-  if (v == NULL) {
-    L->top += 2;
-    lj_vm_call(L, L->top-2, 1+1);
-    L->top -= 2;
-    v = L->top+1;
-  }
-  copyTV(L, L->top, v);
-  incr_top(L);
-}
-
-LUA_API void lua_rawget(lua_State *L, int idx)
-{
-  cTValue *t = index2adr(L, idx);
-  api_check(L, tvistab(t));
-  copyTV(L, L->top-1, lj_tab_get(L, tabV(t), L->top-1));
-}
-
-LUA_API void lua_rawgeti(lua_State *L, int idx, int n)
-{
-  cTValue *v, *t = index2adr(L, idx);
-  api_check(L, tvistab(t));
-  v = lj_tab_getint(tabV(t), n);
-  if (v) {
-    copyTV(L, L->top, v);
-  } else {
-    setnilV(L->top);
-  }
-  incr_top(L);
-}
-
-LUA_API int lua_getmetatable(lua_State *L, int idx)
-{
-  cTValue *o = index2adr(L, idx);
-  GCtab *mt = NULL;
-  if (tvistab(o))
-    mt = tabref(tabV(o)->metatable);
-  else if (tvisudata(o))
-    mt = tabref(udataV(o)->metatable);
-  else
-    mt = tabref(basemt_obj(G(L), o));
-  if (mt == NULL)
-    return 0;
-  settabV(L, L->top, mt);
-  incr_top(L);
-  return 1;
-}
-
-LUALIB_API int luaL_getmetafield(lua_State *L, int idx, const char *field)
-{
-  if (lua_getmetatable(L, idx)) {
-    cTValue *tv = lj_tab_getstr(tabV(L->top-1), lj_str_newz(L, field));
-    if (tv && !tvisnil(tv)) {
-      copyTV(L, L->top-1, tv);
-      return 1;
-    }
-    L->top--;
-  }
-  return 0;
-}
-
-LUA_API void lua_getfenv(lua_State *L, int idx)
-{
-  cTValue *o = index2adr(L, idx);
-  api_checkvalidindex(L, o);
-  if (tvisfunc(o)) {
-    settabV(L, L->top, tabref(funcV(o)->c.env));
-  } else if (tvisudata(o)) {
-    settabV(L, L->top, tabref(udataV(o)->env));
-  } else if (tvisthread(o)) {
-    settabV(L, L->top, tabref(threadV(o)->env));
-  } else {
-    setnilV(L->top);
-  }
-  incr_top(L);
-}
-
-LUA_API int lua_next(lua_State *L, int idx)
-{
-  cTValue *t = index2adr(L, idx);
-  int more;
-  api_check(L, tvistab(t));
-  more = lj_tab_next(L, tabV(t), L->top-1);
-  if (more) {
-    incr_top(L);  /* Return new key and value slot. */
-  } else {  /* End of traversal. */
-    L->top--;  /* Remove key slot. */
-  }
-  return more;
-}
-
-LUA_API const char *lua_getupvalue(lua_State *L, int idx, int n)
-{
-  TValue *val;
-  const char *name = lj_debug_uvnamev(index2adr(L, idx), (uint32_t)(n-1), &val);
-  if (name) {
-    copyTV(L, L->top, val);
-    incr_top(L);
-  }
-  return name;
-}
-
-LUALIB_API void *luaL_checkudata(lua_State *L, int idx, const char *tname)
-{
-  cTValue *o = index2adr(L, idx);
-  if (tvisudata(o)) {
-    GCudata *ud = udataV(o);
-    cTValue *tv = lj_tab_getstr(tabV(registry(L)), lj_str_newz(L, tname));
-    if (tv && tvistab(tv) && tabV(tv) == tabref(ud->metatable))
-      return uddata(ud);
-  }
-  lj_err_argtype(L, idx, tname);
-  return NULL;  /* unreachable */
-}
-
-/* -- Object setters ------------------------------------------------------ */
-
-LUA_API void lua_settable(lua_State *L, int idx)
-{
-  TValue *o;
-  cTValue *t = index2adr(L, idx);
-  api_checknelems(L, 2);
-  api_checkvalidindex(L, t);
-  o = lj_meta_tset(L, t, L->top-2);
-  if (o) {
-    /* NOBARRIER: lj_meta_tset ensures the table is not black. */
-    copyTV(L, o, L->top-1);
-    L->top -= 2;
-  } else {
-    L->top += 3;
-    copyTV(L, L->top-1, L->top-6);
-    lj_vm_call(L, L->top-3, 0+1);
-    L->top -= 3;
-  }
-}
-
-LUA_API void lua_setfield(lua_State *L, int idx, const char *k)
-{
-  TValue *o;
-  TValue key;
-  cTValue *t = index2adr(L, idx);
-  api_checknelems(L, 1);
-  api_checkvalidindex(L, t);
-  setstrV(L, &key, lj_str_newz(L, k));
-  o = lj_meta_tset(L, t, &key);
-  if (o) {
-    L->top--;
-    /* NOBARRIER: lj_meta_tset ensures the table is not black. */
-    copyTV(L, o, L->top);
-  } else {
-    L->top += 3;
-    copyTV(L, L->top-1, L->top-6);
-    lj_vm_call(L, L->top-3, 0+1);
-    L->top -= 2;
-  }
-}
-
-LUA_API void lua_rawset(lua_State *L, int idx)
-{
-  GCtab *t = tabV(index2adr(L, idx));
-  TValue *dst, *key;
-  api_checknelems(L, 2);
-  key = L->top-2;
-  dst = lj_tab_set(L, t, key);
-  copyTV(L, dst, key+1);
-  lj_gc_anybarriert(L, t);
-  L->top = key;
-}
-
-LUA_API void lua_rawseti(lua_State *L, int idx, int n)
-{
-  GCtab *t = tabV(index2adr(L, idx));
-  TValue *dst, *src;
-  api_checknelems(L, 1);
-  dst = lj_tab_setint(L, t, n);
-  src = L->top-1;
-  copyTV(L, dst, src);
-  lj_gc_barriert(L, t, dst);
-  L->top = src;
-}
-
-LUA_API int lua_setmetatable(lua_State *L, int idx)
-{
-  global_State *g;
-  GCtab *mt;
-  cTValue *o = index2adr(L, idx);
-  api_checknelems(L, 1);
-  api_checkvalidindex(L, o);
-  if (tvisnil(L->top-1)) {
-    mt = NULL;
-  } else {
-    api_check(L, tvistab(L->top-1));
-    mt = tabV(L->top-1);
-  }
-  g = G(L);
-  if (tvistab(o)) {
-    setgcref(tabV(o)->metatable, obj2gco(mt));
-    if (mt)
-      lj_gc_objbarriert(L, tabV(o), mt);
-  } else if (tvisudata(o)) {
-    setgcref(udataV(o)->metatable, obj2gco(mt));
-    if (mt)
-      lj_gc_objbarrier(L, udataV(o), mt);
-  } else {
-    /* Flush cache, since traces specialize to basemt. But not during __gc. */
-    if (lj_trace_flushall(L))
-      lj_err_caller(L, LJ_ERR_NOGCMM);
-    if (tvisbool(o)) {
-      /* NOBARRIER: basemt is a GC root. */
-      setgcref(basemt_it(g, LJ_TTRUE), obj2gco(mt));
-      setgcref(basemt_it(g, LJ_TFALSE), obj2gco(mt));
-    } else {
-      /* NOBARRIER: basemt is a GC root. */
-      setgcref(basemt_obj(g, o), obj2gco(mt));
-    }
-  }
-  L->top--;
-  return 1;
-}
-
-LUA_API int lua_setfenv(lua_State *L, int idx)
-{
-  cTValue *o = index2adr(L, idx);
-  GCtab *t;
-  api_checknelems(L, 1);
-  api_checkvalidindex(L, o);
-  api_check(L, tvistab(L->top-1));
-  t = tabV(L->top-1);
-  if (tvisfunc(o)) {
-    setgcref(funcV(o)->c.env, obj2gco(t));
-  } else if (tvisudata(o)) {
-    setgcref(udataV(o)->env, obj2gco(t));
-  } else if (tvisthread(o)) {
-    setgcref(threadV(o)->env, obj2gco(t));
-  } else {
-    L->top--;
-    return 0;
-  }
-  lj_gc_objbarrier(L, gcV(o), t);
-  L->top--;
-  return 1;
-}
-
-LUA_API const char *lua_setupvalue(lua_State *L, int idx, int n)
-{
-  cTValue *f = index2adr(L, idx);
-  TValue *val;
-  const char *name;
-  api_checknelems(L, 1);
-  name = lj_debug_uvnamev(f, (uint32_t)(n-1), &val);
-  if (name) {
-    L->top--;
-    copyTV(L, val, L->top);
-    lj_gc_barrier(L, funcV(f), L->top);
-  }
-  return name;
-}
-
-/* -- Calls --------------------------------------------------------------- */
-
-LUA_API void lua_call(lua_State *L, int nargs, int nresults)
-{
-  api_check(L, L->status == 0 || L->status == LUA_ERRERR);
-  api_checknelems(L, nargs+1);
-  lj_vm_call(L, L->top - nargs, nresults+1);
-}
-
-LUA_API int lua_pcall(lua_State *L, int nargs, int nresults, int errfunc)
-{
-  global_State *g = G(L);
-  uint8_t oldh = hook_save(g);
-  ptrdiff_t ef;
-  int status;
-  api_check(L, L->status == 0 || L->status == LUA_ERRERR);
-  api_checknelems(L, nargs+1);
-  if (errfunc == 0) {
-    ef = 0;
-  } else {
-    cTValue *o = stkindex2adr(L, errfunc);
-    api_checkvalidindex(L, o);
-    ef = savestack(L, o);
-  }
-  status = lj_vm_pcall(L, L->top - nargs, nresults+1, ef);
-  if (status) hook_restore(g, oldh);
-  return status;
-}
-
-static TValue *cpcall(lua_State *L, lua_CFunction func, void *ud)
-{
-  GCfunc *fn = lj_func_newC(L, 0, getcurrenv(L));
-  fn->c.f = func;
-  setfuncV(L, L->top, fn);
-  setlightudV(L->top+1, checklightudptr(L, ud));
-  cframe_nres(L->cframe) = 1+0;  /* Zero results. */
-  L->top += 2;
-  return L->top-1;  /* Now call the newly allocated C function. */
-}
-
-LUA_API int lua_cpcall(lua_State *L, lua_CFunction func, void *ud)
-{
-  global_State *g = G(L);
-  uint8_t oldh = hook_save(g);
-  int status;
-  api_check(L, L->status == 0 || L->status == LUA_ERRERR);
-  status = lj_vm_cpcall(L, func, ud, cpcall);
-  if (status) hook_restore(g, oldh);
-  return status;
-}
-
-LUALIB_API int luaL_callmeta(lua_State *L, int idx, const char *field)
-{
-  if (luaL_getmetafield(L, idx, field)) {
-    TValue *base = L->top--;
-    copyTV(L, base, index2adr(L, idx));
-    L->top = base+1;
-    lj_vm_call(L, base, 1+1);
-    return 1;
-  }
-  return 0;
-}
-
-/* -- Coroutine yield and resume ------------------------------------------ */
-
-LUA_API int lua_yield(lua_State *L, int nresults)
-{
-  void *cf = L->cframe;
-  global_State *g = G(L);
-  if (cframe_canyield(cf)) {
-    cf = cframe_raw(cf);
-    if (!hook_active(g)) {  /* Regular yield: move results down if needed. */
-      cTValue *f = L->top - nresults;
-      if (f > L->base) {
-	TValue *t = L->base;
-	while (--nresults >= 0) copyTV(L, t++, f++);
-	L->top = t;
-      }
-    } else {  /* Yield from hook: add a pseudo-frame. */
-      TValue *top = L->top;
-      hook_leave(g);
-      top->u64 = cframe_multres(cf);
-      setcont(top+1, lj_cont_hook);
-      setframe_pc(top+1, cframe_pc(cf)-1);
-      setframe_gc(top+2, obj2gco(L));
-      setframe_ftsz(top+2, (int)((char *)(top+3)-(char *)L->base)+FRAME_CONT);
-      L->top = L->base = top+3;
-    }
-#if LJ_TARGET_X64
-    lj_err_throw(L, LUA_YIELD);
-#else
-    L->cframe = NULL;
-    L->status = LUA_YIELD;
-    lj_vm_unwind_c(cf, LUA_YIELD);
-#endif
-  }
-  lj_err_msg(L, LJ_ERR_CYIELD);
-  return 0;  /* unreachable */
-}
-
-LUA_API int lua_resume(lua_State *L, int nargs)
-{
-  if (L->cframe == NULL && L->status <= LUA_YIELD)
-    return lj_vm_resume(L, L->top - nargs, 0, 0);
-  L->top = L->base;
-  setstrV(L, L->top, lj_err_str(L, LJ_ERR_COSUSP));
-  incr_top(L);
-  return LUA_ERRRUN;
-}
-
-/* -- Load and dump Lua code ---------------------------------------------- */
-
-static TValue *cpparser(lua_State *L, lua_CFunction dummy, void *ud)
-{
-  LexState *ls = (LexState *)ud;
-  GCproto *pt;
-  GCfunc *fn;
-  UNUSED(dummy);
-  cframe_errfunc(L->cframe) = -1;  /* Inherit error function. */
-  pt = lj_lex_setup(L, ls) ? lj_bcread(ls) : lj_parse(ls);
-  fn = lj_func_newL_empty(L, pt, tabref(L->env));
-  /* Don't combine above/below into one statement. */
-  setfuncV(L, L->top++, fn);
-  return NULL;
-}
-
-LUA_API int lua_load(lua_State *L, lua_Reader reader, void *data,
-		     const char *chunkname)
-{
-  LexState ls;
-  int status;
-  ls.rfunc = reader;
-  ls.rdata = data;
-  ls.chunkarg = chunkname ? chunkname : "?";
-  lj_str_initbuf(&ls.sb);
-  status = lj_vm_cpcall(L, NULL, &ls, cpparser);
-  lj_lex_cleanup(L, &ls);
-  lj_gc_check(L);
-  return status;
-}
-
-LUA_API int lua_dump(lua_State *L, lua_Writer writer, void *data)
-{
-  cTValue *o = L->top-1;
-  api_checknelems(L, 1);
-  if (tvisfunc(o) && isluafunc(funcV(o)))
-    return lj_bcwrite(L, funcproto(funcV(o)), writer, data, 0);
-  else
-    return 1;
-}
-
-/* -- GC and memory management -------------------------------------------- */
-
-LUA_API int lua_gc(lua_State *L, int what, int data)
-{
-  global_State *g = G(L);
-  int res = 0;
-  switch (what) {
-  case LUA_GCSTOP:
-    g->gc.threshold = LJ_MAX_MEM;
-    break;
-  case LUA_GCRESTART:
-    g->gc.threshold = data == -1 ? (g->gc.total/100)*g->gc.pause : g->gc.total;
-    break;
-  case LUA_GCCOLLECT:
-    lj_gc_fullgc(L);
-    break;
-  case LUA_GCCOUNT:
-    res = (int)(g->gc.total >> 10);
-    break;
-  case LUA_GCCOUNTB:
-    res = (int)(g->gc.total & 0x3ff);
-    break;
-  case LUA_GCSTEP: {
-    MSize a = (MSize)data << 10;
-    g->gc.threshold = (a <= g->gc.total) ? (g->gc.total - a) : 0;
-    while (g->gc.total >= g->gc.threshold)
-      if (lj_gc_step(L)) {
-	res = 1;
-	break;
-      }
-    break;
-  }
-  case LUA_GCSETPAUSE:
-    res = (int)(g->gc.pause);
-    g->gc.pause = (MSize)data;
-    break;
-  case LUA_GCSETSTEPMUL:
-    res = (int)(g->gc.stepmul);
-    g->gc.stepmul = (MSize)data;
-    break;
-  default:
-    res = -1;  /* Invalid option. */
-  }
-  return res;
-}
-
-LUA_API lua_Alloc lua_getallocf(lua_State *L, void **ud)
-{
-  global_State *g = G(L);
-  if (ud) *ud = g->allocd;
-  return g->allocf;
-}
-
-LUA_API void lua_setallocf(lua_State *L, lua_Alloc f, void *ud)
-{
-  global_State *g = G(L);
-  g->allocd = ud;
-  g->allocf = f;
-}
-
-- 
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