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WIP collect sections associations

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This commit is contained in:
Nikita Smith
2025-07-23 16:09:48 -07:00
committed by Ryan Fleury
parent a4ac07162e
commit a6b2cf64ba
7 changed files with 107 additions and 47 deletions
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src/linker/lnk_obj.c
+35 -9
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@@ -224,6 +224,31 @@ THREAD_POOL_TASK_FUNC(lnk_obj_initer)
scratch_end(scratch);
}
//
// collect sections associations
//
U32Node **associated_sections = push_array(arena, U32Node *, header.section_count_no_null + 1);
{
String8 string_table = str8_substr(input->data, header.string_table_range);
String8 symbol_table = str8_substr(input->data, header.symbol_table_range);
COFF_ParsedSymbol symbol;
for (U32 symbol_idx = 0; symbol_idx < header.symbol_count; symbol_idx += (1 + symbol.aux_symbol_count)) {
symbol = coff_parse_symbol(header, string_table, symbol_table, symbol_idx);
COFF_SymbolValueInterpType interp = coff_interp_from_parsed_symbol(symbol);
if (interp == COFF_SymbolValueInterp_Regular && symbol.storage_class == COFF_SymStorageClass_Static && symbol.aux_symbol_count > 0) {
COFF_ComdatSelectType selection = COFF_ComdatSelect_Null;
U32 section_number = 0;
coff_parse_secdef(symbol, header.is_big_obj, &selection, &section_number, 0, 0);
if (selection != COFF_ComdatSelect_Associative) { continue; }
U32Node *associated_node = push_array(arena, U32Node, 1);
associated_node->data = symbol.section_number;
SLLStackPush(associated_sections[section_number], associated_node);
}
}
}
//
// extract obj features from compile symbol in .debug$S
@@ -267,13 +292,14 @@ THREAD_POOL_TASK_FUNC(lnk_obj_initer)
}
// fill out obj
obj->data = input->data;
obj->path = push_str8_copy(arena, input->path);
obj->lib_path = push_str8_copy(arena, input->lib_path);
obj->input_idx = obj_idx;
obj->header = header;
obj->comdats = comdats;
obj->hotpatch = hotpatch;
obj->data = input->data;
obj->path = push_str8_copy(arena, input->path);
obj->lib_path = push_str8_copy(arena, input->lib_path);
obj->input_idx = obj_idx;
obj->header = header;
obj->comdats = comdats;
obj->hotpatch = hotpatch;
obj->associated_sections = associated_sections;
ProfEnd();
}
@@ -466,13 +492,13 @@ lnk_coff_section_header_from_section_number(LNK_Obj *obj, U64 section_number)
}
internal B32
lnk_try_comdat_props_from_section_number(LNK_Obj *obj, U32 section_number, COFF_ComdatSelectType *select_out, U32 *section_length_out, U32 *check_sum_out)
lnk_try_comdat_props_from_section_number(LNK_Obj *obj, U32 section_number, COFF_ComdatSelectType *select_out, U32 *section_number_out, U32 *section_length_out, U32 *check_sum_out)
{
Assert(section_number > 0);
U32 symbol_idx = obj->comdats[section_number-1];
if (symbol_idx != max_U32) {
COFF_ParsedSymbol secdef = lnk_parsed_symbol_from_coff_symbol_idx(obj, symbol_idx);
coff_parse_secdef(secdef, obj->header.is_big_obj, select_out, 0, section_length_out, check_sum_out);
coff_parse_secdef(secdef, obj->header.is_big_obj, select_out, section_number_out, section_length_out, check_sum_out);
return 1;
}
return 0;