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move directive section gather logic to obj layer

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This commit is contained in:
Nikita Smith
2025-07-28 20:07:56 -07:00
parent 72e073e4e6
commit 7be9df0e90
3 changed files with 46 additions and 34 deletions
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src/linker/lnk_obj.c
+40
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@@ -630,6 +630,36 @@ lnk_obj_is_before(void *raw_a, void *raw_b)
return a->input_idx < b->input_idx;
}
internal String8List
lnk_raw_directives_from_obj(Arena *arena, LNK_Obj *obj)
{
COFF_SectionHeader *section_table = lnk_coff_section_table_from_obj(obj);
String8List drectve_data = {0};
for (U64 sect_idx = 0; sect_idx < obj->header.section_count_no_null; sect_idx += 1) {
COFF_SectionHeader *sect_header = &section_table[sect_idx];
if (sect_header->flags & COFF_SectionFlag_LnkInfo) {
String8 sect_name = str8_cstring_capped(sect_header->name, sect_header->name + sizeof(sect_header->name));
if (str8_match(sect_name, str8_lit(".drectve"), 0)) {
if (sect_header->flags & COFF_SectionFlag_CntUninitializedData) {
lnk_error_obj(LNK_Error_IllData, obj, ".drectve section header has flag COFF_SectionFlag_CntUninitializedData");
break;
}
if (sect_header->fsize < 3) {
lnk_error_obj(LNK_Error_IllData, obj, "not enough bytes to parse .drectve");
break;
}
if (sect_header->reloc_count > 0) {
lnk_error_obj(LNK_Error_IllData, obj, ".drectve must not have relocations");
break;
}
Rng1U64 sect_range = rng_1u64(sect_header->foff, sect_header->foff + sect_header->fsize);
str8_list_push(arena, &drectve_data, str8_substr(obj->data, sect_range));
}
}
}
return drectve_data;
}
internal void
lnk_parse_msvc_linker_directive(Arena *arena, LNK_Obj *obj, LNK_DirectiveInfo *directive_info, String8 buffer)
{
@@ -677,3 +707,13 @@ lnk_parse_msvc_linker_directive(Arena *arena, LNK_Obj *obj, LNK_DirectiveInfo *d
scratch_end(scratch);
}
internal LNK_DirectiveInfo
lnk_directive_info_from_raw_directives(Arena *arena, LNK_Obj *obj, String8List raw_directives)
{
LNK_DirectiveInfo directive_info = {0};
for (String8Node *drectve_n = raw_directives.first; drectve_n != 0; drectve_n = drectve_n->next) {
lnk_parse_msvc_linker_directive(arena, obj, &directive_info, drectve_n->string);
}
return directive_info;
}