From dc4e0ecdafbdd2e0f936680ccc703b663260407e Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Thu, 5 Jul 2001 17:29:15 -0300
Subject: new versions by lhf
---
lundump.c | 121 +++++++++++++++++++++++++++++++++++---------------------------
1 file changed, 69 insertions(+), 52 deletions(-)
(limited to 'lundump.c')
diff --git a/lundump.c b/lundump.c
index f12bade5..f365b577 100644
--- a/lundump.c
+++ b/lundump.c
@@ -1,6 +1,6 @@
/*
-** $Id: lundump.c,v 1.39 2001/02/23 17:17:25 roberto Exp roberto $
-** load bytecodes from files
+** $Id: lundump.c,v 1.35 2001/06/28 13:55:17 lhf Exp lhf $
+** load pre-compiled Lua chunks
** See Copyright Notice in lua.h
*/
@@ -10,6 +10,7 @@
#define LUA_PRIVATE
#include "lua.h"
+#include "ldebug.h"
#include "lfunc.h"
#include "lmem.h"
#include "lopcodes.h"
@@ -46,7 +47,7 @@ static void LoadBlock (lua_State* L, void* b, size_t size, ZIO* Z, int swap)
{
if (swap)
{
- l_char *p=(l_char *) b+size-1;
+ l_char *p=(l_char*) b+size-1;
int n=size;
while (n--) *p--=(l_char)ezgetc(L,Z);
}
@@ -58,7 +59,7 @@ static void LoadVector (lua_State* L, void* b, int m, size_t size, ZIO* Z, int s
{
if (swap)
{
- l_char *q=(l_char *) b;
+ l_char *q=(l_char*) b;
while (m--)
{
l_char *p=q+size-1;
@@ -99,77 +100,92 @@ static TString* LoadString (lua_State* L, ZIO* Z, int swap)
return NULL;
else
{
- char* s=luaO_openspace(L,size,char);
+ l_char* s=luaO_openspace(L,size,l_char);
LoadBlock(L,s,size,Z,0);
- return luaS_newlstr(L,s,size-1); /* remove trailing l_c('\0') */
+ return luaS_newlstr(L,s,size-1); /* remove trailing '\0' */
}
}
-static void LoadCode (lua_State* L, Proto* tf, ZIO* Z, int swap)
+static void LoadCode (lua_State* L, Proto* f, ZIO* Z, int swap)
{
int size=LoadInt(L,Z,swap);
- tf->code=luaM_newvector(L,size,Instruction);
- tf->sizecode=size;
- LoadVector(L,tf->code,size,sizeof(*tf->code),Z,swap);
+ f->code=luaM_newvector(L,size,Instruction);
+ f->sizecode=size;
+ LoadVector(L,f->code,size,sizeof(*f->code),Z,swap);
}
-static void LoadLocals (lua_State* L, Proto* tf, ZIO* Z, int swap)
+static void LoadLocals (lua_State* L, Proto* f, ZIO* Z, int swap)
{
int i,n;
n=LoadInt(L,Z,swap);
- tf->locvars=luaM_newvector(L,n,LocVar);
- tf->sizelocvars=n;
+ f->locvars=luaM_newvector(L,n,LocVar);
+ f->sizelocvars=n;
for (i=0; i<n; i++)
{
- tf->locvars[i].varname=LoadString(L,Z,swap);
- tf->locvars[i].startpc=LoadInt(L,Z,swap);
- tf->locvars[i].endpc=LoadInt(L,Z,swap);
+ f->locvars[i].varname=LoadString(L,Z,swap);
+ f->locvars[i].startpc=LoadInt(L,Z,swap);
+ f->locvars[i].endpc=LoadInt(L,Z,swap);
}
}
-static void LoadLines (lua_State* L, Proto* tf, ZIO* Z, int swap)
+static void LoadLines (lua_State* L, Proto* f, ZIO* Z, int swap)
{
int n;
n=LoadInt(L,Z,swap);
- tf->lineinfo=luaM_newvector(L,n,int);
- tf->sizelineinfo=n;
- LoadVector(L,tf->lineinfo,n,sizeof(*tf->lineinfo),Z,swap);
+ f->lineinfo=luaM_newvector(L,n,int);
+ f->sizelineinfo=n;
+ LoadVector(L,f->lineinfo,n,sizeof(*f->lineinfo),Z,swap);
}
static Proto* LoadFunction (lua_State* L, ZIO* Z, int swap);
-static void LoadConstants (lua_State* L, Proto* tf, ZIO* Z, int swap)
+static void LoadConstants (lua_State* L, Proto* f, ZIO* Z, int swap)
{
int i,n;
n=LoadInt(L,Z,swap);
- tf->kstr=luaM_newvector(L,n,TString*);
- tf->sizekstr=n;
+ f->k=luaM_newvector(L,n,TObject);
+ f->sizek=n;
for (i=0; i<n; i++)
- tf->kstr[i]=LoadString(L,Z,swap);
- n=LoadInt(L,Z,swap);
- tf->knum=luaM_newvector(L,n,lua_Number);
- tf->sizeknum=n;
- LoadVector(L,tf->knum,n,sizeof(*tf->knum),Z,swap);
+ {
+ TObject* o=&f->k[i];
+ ttype(o)=LoadByte(L,Z);
+ switch (ttype(o))
+ {
+ case LUA_TNUMBER:
+ nvalue(o)=LoadNumber(L,Z,swap);
+ break;
+ case LUA_TSTRING:
+ tsvalue(o)=LoadString(L,Z,swap);
+ break;
+ default:
+ luaO_verror(L,l_s("bad constant type (%d) in `%.99s'"),ttype(o),ZNAME(Z));
+ break;
+ }
+ }
n=LoadInt(L,Z,swap);
- tf->kproto=luaM_newvector(L,n,Proto*);
- tf->sizekproto=n;
+ f->p=luaM_newvector(L,n,Proto*);
+ f->sizep=n;
for (i=0; i<n; i++)
- tf->kproto[i]=LoadFunction(L,Z,swap);
+ f->p[i]=LoadFunction(L,Z,swap);
}
static Proto* LoadFunction (lua_State* L, ZIO* Z, int swap)
{
- Proto* tf=luaF_newproto(L);
- tf->source=LoadString(L,Z,swap);
- tf->lineDefined=LoadInt(L,Z,swap);
- tf->numparams=LoadInt(L,Z,swap);
- tf->is_vararg=LoadByte(L,Z);
- tf->maxstacksize=LoadInt(L,Z,swap);
- LoadLocals(L,tf,Z,swap);
- LoadLines(L,tf,Z,swap);
- LoadConstants(L,tf,Z,swap);
- LoadCode(L,tf,Z,swap);
- return tf;
+ Proto* f=luaF_newproto(L);
+ f->source=LoadString(L,Z,swap);
+ f->lineDefined=LoadInt(L,Z,swap);
+ f->nupvalues=LoadInt(L,Z,swap);
+ f->numparams=LoadInt(L,Z,swap);
+ f->is_vararg=LoadByte(L,Z);
+ f->maxstacksize=LoadInt(L,Z,swap);
+ LoadLocals(L,f,Z,swap);
+ LoadLines(L,f,Z,swap);
+ LoadConstants(L,f,Z,swap);
+ LoadCode(L,f,Z,swap);
+#ifndef TRUST_BINARIES
+ if (luaG_checkcode(f)==0) luaO_verror(L,l_s("bad code in `%.99s'"),ZNAME(Z));
+#endif
+ return f;
}
static void LoadSignature (lua_State* L, ZIO* Z)
@@ -194,7 +210,7 @@ static void TestSize (lua_State* L, int s, const l_char* what, ZIO* Z)
static int LoadHeader (lua_State* L, ZIO* Z)
{
int version,swap;
- lua_Number f=0,tf=TEST_NUMBER;
+ lua_Number x=0,tx=TEST_NUMBER;
LoadSignature(L,Z);
version=ezgetc(L,Z);
if (version>VERSION)
@@ -205,19 +221,20 @@ static int LoadHeader (lua_State* L, ZIO* Z)
luaO_verror(L,l_s("`%.99s' too old:\n")
l_s(" read version %d.%d; expected at least %d.%d"),
ZNAME(Z),V(version),V(VERSION));
- swap=(luaU_endianess()!=ezgetc(L,Z)); /* need to swap bytes? */
+ swap=(luaU_endianness()!=ezgetc(L,Z)); /* need to swap bytes? */
TESTSIZE(sizeof(int));
TESTSIZE(sizeof(size_t));
TESTSIZE(sizeof(Instruction));
- TESTSIZE(SIZE_INSTRUCTION);
TESTSIZE(SIZE_OP);
+ TESTSIZE(SIZE_A);
TESTSIZE(SIZE_B);
+ TESTSIZE(SIZE_C);
TESTSIZE(sizeof(lua_Number));
- f=LoadNumber(L,Z,swap);
- if ((long)f!=(long)tf) /* disregard errors in last bit of fraction */
+ x=LoadNumber(L,Z,swap);
+ if ((long)x!=(long)tx) /* disregard errors in last bits of fraction */
luaO_verror(L,l_s("unknown number format in `%.99s':\n")
l_s(" read ") l_s(LUA_NUMBER_FMT) l_s("; expected ") l_s(LUA_NUMBER_FMT),
- ZNAME(Z),f,tf);
+ ZNAME(Z),x,tx);
return swap;
}
@@ -232,20 +249,20 @@ static Proto* LoadChunk (lua_State* L, ZIO* Z)
*/
Proto* luaU_undump (lua_State* L, ZIO* Z)
{
- Proto* tf=NULL;
+ Proto* f=NULL;
int c=zgetc(Z);
if (c==ID_CHUNK)
- tf=LoadChunk(L,Z);
+ f=LoadChunk(L,Z);
c=zgetc(Z);
if (c!=EOZ)
luaO_verror(L,l_s("`%.99s' apparently contains more than one chunk"),ZNAME(Z));
- return tf;
+ return f;
}
/*
** find byte order
*/
-int luaU_endianess (void)
+int luaU_endianness (void)
{
int x=1;
return *(l_char*)&x;
--
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