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Always emit an absolute @feat.00 symbol for CFG support #78

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Always emit an absolute @feat.00 symbol for CFG support #78

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15 changes: 11 additions & 4 deletions output/outcoff.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1042,8 +1042,8 @@ static void coff_write(void)
/* fill in the .drectve section with -export's */
BuildExportTable(&Exports);

if (win32) {
/* add default value for @feat.00, this allows to 'link /safeseh' */
/* Emit an absolute @feat.00 symbol */
{
uint32_t n;

saa_rewind(coff_syms);
Expand All @@ -1052,8 +1052,15 @@ static void coff_write(void)
if (sym->strpos == -1 && !strcmp("@feat.00",sym->name))
break;
}
if (n == coff_nsyms)
coff_deflabel("@feat.00", NO_SEG, 1, 0, NULL);
if (n == coff_nsyms) {
int64_t feat00_flags = 0;
if (win32)
/* marks the object for "registered SEH". this allows to 'link /safeseh' */
feat00_flags |= 1;

feat00_flags |= 0x800; /* object is CFG-aware */
coff_deflabel("@feat.00", NO_SEG, feat00_flags, 0, NULL);
}
}

/*
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