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improve unresolved symbol errors

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- collect symbol references and print out objs that reference
  unresolved symbol
- print source file location of the references
This commit is contained in:
Nikita Smith
2025-09-06 09:54:23 -07:00
committed by Ryan Fleury
parent d92f45784d
commit a6432cce8e
12 changed files with 484 additions and 165 deletions
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src/linker/lnk_obj.c
+74 -1
View File
@@ -1,11 +1,25 @@
// Copyright (c) Epic Games Tools
// Licensed under the MIT license (https://opensource.org/license/mit/)
internal String8
lnk_loc_from_obj(Arena *arena, LNK_Obj *obj)
{
String8 obj_path = str8_skip_last_slash(obj ? obj->path : str8_lit("RADLINK"));
String8 lib_path = str8_skip_last_slash(lnk_obj_get_lib_path(obj));
String8 result;
if (lib_path.size) {
result = push_str8f(arena, "%S(%S)", lib_path, obj_path);
} else {
result = push_str8_copy(arena, obj_path);
}
return result;
}
internal void
lnk_error_obj(LNK_ErrorCode code, LNK_Obj *obj, char *fmt, ...)
{
va_list args; va_start(args, fmt);
String8 obj_path = obj ? obj->path : str8_lit("RADLINK");
String8 obj_path = obj ? obj->path : str8_zero();
String8 lib_path = lnk_obj_get_lib_path(obj);
lnk_error_with_loc_fv(code, obj_path, lib_path, fmt, args);
va_end(args);
@@ -494,12 +508,27 @@ lnk_coff_section_header_from_section_number(LNK_Obj *obj, U64 section_number)
return section_header;
}
internal COFF_RelocArray
lnk_coff_relocs_from_section_header(LNK_Obj *obj, COFF_SectionHeader *section_header)
{
COFF_RelocInfo reloc_info = coff_reloc_info_from_section_header(obj->data, section_header);
COFF_Reloc *relocs = (COFF_Reloc *)(obj->data.str + reloc_info.array_off);
COFF_RelocArray result = { .count = reloc_info.count, .v = relocs };
return result;
}
internal COFF_SectionHeader *
lnk_coff_section_table_from_obj(LNK_Obj *obj)
{
return (COFF_SectionHeader *)str8_substr(obj->data, obj->header.section_table_range).str;
}
internal String8
lnk_coff_string_table_from_obj(LNK_Obj *obj)
{
return str8_substr(obj->data, obj->header.string_table_range);
}
internal COFF_RelocArray
lnk_coff_reloc_info_from_section_number(LNK_Obj *obj, U64 section_number)
{
@@ -684,3 +713,47 @@ lnk_directive_info_from_raw_directives(Arena *arena, LNK_Obj *obj, String8List r
return directive_info;
}
internal CV_DebugS
lnk_debug_s_from_obj(Arena *arena, LNK_Obj *obj)
{
Temp scratch = scratch_begin(&arena, 1);
String8List raw_debug_s = {0};
{
COFF_SectionHeader *section_table = lnk_coff_section_table_from_obj(obj);
String8 string_table = lnk_coff_string_table_from_obj(obj);
for EachIndex(sect_idx, obj->header.section_count_no_null) {
COFF_SectionHeader *section_header = &section_table[sect_idx];
String8 section_name = coff_name_from_section_header(string_table, section_header);
if (str8_match(section_name, str8_lit(".debug$S"), 0)) {
String8 debug_s = str8_substr(obj->data, rng_1u64(section_header->foff, section_header->foff + section_header->fsize));
str8_list_push(scratch.arena, &raw_debug_s, debug_s);
}
}
}
CV_DebugS debug_s = {0};
{
for (String8Node *node = raw_debug_s.first; node != 0; node = node->next) {
// parse & merge sub sections
CV_DebugS ds = cv_parse_debug_s(scratch.arena, node->string);
cv_debug_s_concat_in_place(&debug_s, &ds);
// make sure there is one string table
String8List string_data_list = cv_sub_section_from_debug_s(debug_s, CV_C13SubSectionKind_StringTable);
if (string_data_list.node_count > 1) {
break;
}
// make sure there is one file checksum table
String8List checksum_data_list = cv_sub_section_from_debug_s(debug_s, CV_C13SubSectionKind_FileChksms);
if (checksum_data_list.node_count > 1) {
continue;
}
}
}
scratch_end(scratch);
return debug_s;
}