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added 3 new bytes to header (sizeof's)

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Luiz Henrique de Figueiredo 1996-11-14 09:44:34 -02:00
parent 8b195533d2
commit d991def36c
1 changed files with 14 additions and 4 deletions
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18
undump.c
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@ -3,7 +3,7 @@
** load bytecodes from files ** load bytecodes from files
*/ */
char* rcs_undump="$Id: undump.c,v 1.15 1996/11/07 13:59:51 lhf Exp lhf $"; char* rcs_undump="$Id: undump.c,v 1.16 1996/11/07 14:13:28 lhf Exp lhf $";
#include <stdio.h> #include <stdio.h>
#include <string.h> #include <string.h>
@ -90,7 +90,7 @@ static void FixCode(Byte* code, Byte* end) /* swap words */
p+=3; p+=3;
break; break;
case PUSHFUNCTION: case PUSHFUNCTION:
p+=5; p+=5; /* TODO: use sizeof(TFunc*) or old? */
break; break;
case PUSHWORD: case PUSHWORD:
case PUSHSELF: case PUSHSELF:
@ -111,7 +111,7 @@ static void FixCode(Byte* code, Byte* end) /* swap words */
p+=3; p+=3;
break; break;
} }
case PUSHFLOAT: case PUSHFLOAT: /* assumes sizeof(float)==4 */
{ {
Byte t; Byte t;
t=p[1]; p[1]=p[4]; p[4]=t; t=p[1]; p[1]=p[4]; p[4]=t;
@ -250,8 +250,18 @@ static void LoadHeader(FILE* D) /* TODO: error handling */
{ {
Word w,tw=TEST_WORD; Word w,tw=TEST_WORD;
float f,tf=TEST_FLOAT; float f,tf=TEST_FLOAT;
int version;
LoadSignature(D); LoadSignature(D);
getc(D); /* skip version */ version=getc(D);
if (version>23) /* after 2.5 */
{
int oldsizeofI=getc(D);
int oldsizeofF=getc(D);
int oldsizeofP=getc(D);
if (oldsizeofF!=4) lua_error("sizeof(float)!=4. not an IEEE machine?");
if (oldsizeofFP!=sizeof(TFunc*)) /* TODO: pack */
lua_error("different pointer sizes");
}
fread(&w,sizeof(w),1,D); /* test word */ fread(&w,sizeof(w),1,D); /* test word */
if (w!=tw) if (w!=tw)
{ {