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lazy touch obj string tables

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This commit is contained in:
Nikita Smith
2026-06-19 20:12:24 -07:00
committed by Ryan Fleury
parent 9616307503
commit 3534100e8d
3 changed files with 33 additions and 17 deletions
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src/linker/lnk_debug_info.c
+3 -2
View File
@@ -3074,14 +3074,15 @@ THREAD_POOL_TASK_FUNC(lnk_push_dbi_sec_contrib_task)
PDB_DbiSectionContribNode *sc_arr = push_array_no_zero(arena, PDB_DbiSectionContribNode, obj->header.section_count_no_null);
U64 sc_count = 0;
for (U64 sect_idx = 0; sect_idx < obj->header.section_count_no_null; sect_idx += 1) {
for EachIndex(sect_idx, obj->header.section_count_no_null) {
LNK_ObjSection section = lnk_obj_section_from_sect_idx(obj, sect_idx);
if (*section.flags & COFF_SectionFlag_LnkInfo) { continue; }
if (*section.flags & COFF_SectionFlag_LnkRemove) { continue; }
if (*section.flags & LNK_SECTION_FLAG_DEBUG) { continue; }
if (str8_match(section.name, str8_lit(".pdata"), 0)) { continue; }
String8 section_name = lnk_obj_section_name_from_sect_idx(obj, sect_idx);
if (str8_match(section_name, str8_lit(".pdata"), 0)) { continue; }
U64 sect_number;
String8 sect_data;
src/linker/lnk_obj.c
+28 -14
View File
@@ -351,12 +351,12 @@ THREAD_POOL_TASK_FUNC(lnk_obj_find_debug_t)
{
LNK_Obj *obj = &((LNK_ObjNode *)raw_task)[task_id].data;
for EachIndex(sect_idx, obj->header.section_count_no_null) {
LNK_ObjSection section = lnk_obj_section_from_sect_idx(obj, sect_idx);
if (str8_match(section.name, str8_lit(".debug$T"), 0)) {
String8 section_name = lnk_obj_section_name_from_sect_idx(obj, sect_idx);
if (str8_match(section_name, str8_lit(".debug$T"), 0)) {
obj->debug_t_sect_idx = sect_idx;
} else if (str8_match(section.name, str8_lit(".debug$P"), 0)) {
} else if (str8_match(section_name, str8_lit(".debug$P"), 0)) {
obj->debug_p_sect_idx = sect_idx;
} else if (str8_match(section.name, str8_lit(".debug$H"), 0)) {
} else if (str8_match(section_name, str8_lit(".debug$H"), 0)) {
obj->debug_h_sect_idx = sect_idx;
}
}
@@ -570,6 +570,20 @@ lnk_obj_section_number_from_sect_idx(LNK_Obj *obj, U64 sect_idx)
return sect_idx+1;
}
internal String8
lnk_obj_section_name_from_sect_idx(LNK_Obj *obj, U64 sect_idx)
{
COFF_SectionHeader *section_header = &lnk_coff_section_table_from_obj(obj)[sect_idx];
return coff_name_from_section_header(lnk_coff_string_table_from_obj(obj), section_header);
}
internal String8
lnk_obj_section_name_from_section_number(LNK_Obj *obj, U64 section_number)
{
Assert(section_number > 0);
return lnk_obj_section_name_from_sect_idx(obj, section_number-1);
}
internal LNK_ObjSection
lnk_obj_section_from_sect_idx(LNK_Obj *obj, U64 sect_idx)
{
@@ -580,7 +594,6 @@ lnk_obj_section_from_sect_idx(LNK_Obj *obj, U64 sect_idx)
section.section_number = sect_idx+1;
section.header = &lnk_coff_section_table_from_obj(obj)[sect_idx];
section.flags = &obj->section_flags[sect_idx];
section.name = coff_name_from_section_header(lnk_coff_string_table_from_obj(obj), section.header);
section.vrange = rng_1u64(section.header->voff, section.header->voff + section.header->vsize);
section.frange = rng_1u64(section.header->foff, section.header->foff + section.header->fsize);
section.reloc_count = section.header->reloc_count;
@@ -669,16 +682,15 @@ THREAD_POOL_TASK_FUNC(lnk_collect_obj_chunks_task)
LNK_SectionCollector *task = raw_task;
LNK_Obj *obj = task->objs[task_id];
for (U32 sect_idx = 0; sect_idx < obj->header.section_count_no_null; sect_idx += 1) {
for EachIndex(sect_idx, obj->header.section_count_no_null) {
LNK_ObjSection section = lnk_obj_section_from_sect_idx(obj, sect_idx);
if (*section.flags & COFF_SectionFlag_LnkRemove) {
if (!task->collect_discarded) {
continue;
}
if (*section.flags & COFF_SectionFlag_LnkRemove && !task->collect_discarded) {
continue;
}
if (str8_match(section.name, task->name, 0)) {
String8 section_name = lnk_obj_section_name_from_sect_idx(obj, sect_idx);
if (str8_match(section_name, task->name, 0)) {
String8 section_data = str8_substr(obj->data, section.frange);
str8_list_push(arena, &task->out_lists[task_id], section_data);
}
@@ -758,7 +770,8 @@ lnk_raw_directives_from_obj(Arena *arena, LNK_Obj *obj)
for (U64 sect_idx = 0; sect_idx < obj->header.section_count_no_null; sect_idx += 1) {
LNK_ObjSection section = lnk_obj_section_from_sect_idx(obj, sect_idx);
if (*section.flags & COFF_SectionFlag_LnkInfo) {
if (str8_match(section.name, str8_lit(".drectve"), 0)) {
String8 section_name = lnk_obj_section_name_from_sect_idx(obj, sect_idx);
if (str8_match(section_name, str8_lit(".drectve"), 0)) {
if (*section.flags & COFF_SectionFlag_CntUninitializedData) {
lnk_error_obj(LNK_Error_IllData, obj, ".drectve section header has flag COFF_SectionFlag_CntUninitializedData");
break;
@@ -796,8 +809,9 @@ lnk_debug_s_from_obj(Arena *arena, LNK_Obj *obj)
String8List raw_debug_s = {0};
{
for EachIndex(sect_idx, obj->header.section_count_no_null) {
LNK_ObjSection section = lnk_obj_section_from_sect_idx(obj, sect_idx);
if (str8_match(section.name, str8_lit(".debug$S"), 0)) {
LNK_ObjSection section = lnk_obj_section_from_sect_idx(obj, sect_idx);
String8 section_name = lnk_obj_section_name_from_sect_idx(obj, sect_idx);
if (str8_match(section_name, str8_lit(".debug$S"), 0)) {
String8 debug_s = str8_substr(obj->data, section.frange);
str8_list_push(scratch.arena, &raw_debug_s, debug_s);
}
src/linker/lnk_obj.h
+2 -1
View File
@@ -47,7 +47,6 @@ typedef struct LNK_ObjSection
U64 section_number;
COFF_SectionHeader *header;
COFF_SectionFlags *flags;
String8 name;
Rng1U64 vrange;
Rng1U64 frange;
U32 reloc_count;
@@ -148,6 +147,8 @@ internal COFF_SectionHeader * lnk_coff_section_header_from_section_number(LNK_Ob
internal COFF_ParsedSymbol lnk_parsed_symbol_from_coff_symbol_idx(LNK_Obj *obj, U64 symbol_idx);
internal U64 lnk_obj_sect_idx_from_section_number(LNK_Obj *obj, U64 section_number);
internal U64 lnk_obj_section_number_from_sect_idx(LNK_Obj *obj, U64 sect_idx);
internal String8 lnk_obj_section_name_from_section_number(LNK_Obj *obj, U64 section_number);
internal String8 lnk_obj_section_name_from_sect_idx(LNK_Obj *obj, U64 sect_idx);
internal LNK_ObjSection lnk_obj_section_from_sect_idx(LNK_Obj *obj, U64 sect_idx);
internal LNK_ObjSection lnk_obj_section_from_section_number(LNK_Obj *obj, U64 section_number);
internal COFF_RelocArray lnk_coff_relocs_from_section_header(LNK_Obj *obj, COFF_SectionHeader *section_header);