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Don't use the full 32 bits of %esp when called from 16-bit code.

oldstable
Alexandre Julliard 2005-07-01 19:18:46 +00:00
parent b284869039
commit deaec125ca
1 changed files with 18 additions and 2 deletions
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20
tools/winebuild/import.c
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@ -705,8 +705,7 @@ static void output_import_thunk( FILE *outfile, const char *name, const char *ta
}
else
{
if (!strcmp( name, "__wine_call_from_32_regs" ) ||
!strcmp( name, "__wine_call_from_16_regs" ))
if (!strcmp( name, "__wine_call_from_32_regs" ))
{
/* special case: need to preserve all registers */
fprintf( outfile, " \"\\tpushl %%eax\\n\"\n" );
@ -720,6 +719,23 @@ static void output_import_thunk( FILE *outfile, const char *name, const char *ta
fprintf( outfile, " \"\\txchgl %%eax,(%%esp)\\n\"\n" );
fprintf( outfile, " \"\\tret\\n\"\n" );
}
else if (!strcmp( name, "__wine_call_from_16_regs" ))
{
/* special case: need to preserve all registers */
fprintf( outfile, " \"\\tpushl %%eax\\n\"\n" );
fprintf( outfile, " \"\\tpushl %%ecx\\n\"\n" );
fprintf( outfile, " \"\\tcall .L__wine_spec_%s\\n\"\n", name );
fprintf( outfile, " \".L__wine_spec_%s:\\n\"\n", name );
fprintf( outfile, " \"\\tpopl %%eax\\n\"\n" );
fprintf( outfile, " \"\\t.byte 0x2e\\n\"\n" );
fprintf( outfile, " \"\\tmovl %s+%d-.L__wine_spec_%s(%%eax),%%eax\\n\"\n",
asm_name(table), pos, name );
fprintf( outfile, " \"\\tmovzwl %%sp, %%ecx\\n\"\n" );
fprintf( outfile, " \"\\t.byte 0x36\\n\"\n" );
fprintf( outfile, " \"\\txchgl %%eax,4(%%ecx)\\n\"\n" );
fprintf( outfile, " \"\\tpopl %%ecx\\n\"\n" );
fprintf( outfile, " \"\\tret\\n\"\n" );
}
else
{
fprintf( outfile, " \"\\tcall .L__wine_spec_%s\\n\"\n", name );