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progress on /opt:ref

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Link the debugger and strip unreferenced sections
TODO: Mark referenced undefined symbols for unresolved symbol reporting
This commit is contained in:
Nikita Smith
2025-08-07 17:36:11 -07:00
parent e1d6b9f319
commit 9a1f96bda2
6 changed files with 621 additions and 656 deletions
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src/linker/lnk_obj.c
+5 -24
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@@ -365,7 +365,6 @@ THREAD_POOL_TASK_FUNC(lnk_input_coff_symbol_table)
case COFF_SymbolValueInterp_Weak: {
LNK_Symbol *defn = lnk_make_defined_symbol(arena, symbol.name, obj, symbol_idx);
lnk_symbol_table_push_(task->symtab, arena, worker_id, LNK_SymbolScope_Defined, defn);
lnk_symbol_list_push(arena, &task->weak_lists[worker_id], defn);
} break;
case COFF_SymbolValueInterp_Common: {
LNK_Symbol *defn = lnk_make_defined_symbol(arena, symbol.name, obj, symbol_idx);
@@ -378,16 +377,9 @@ THREAD_POOL_TASK_FUNC(lnk_input_coff_symbol_table)
}
} break;
case COFF_SymbolValueInterp_Undefined: {
LNK_Symbol *s = lnk_symbol_table_search(task->symtab, LNK_SymbolScope_Defined, symbol.name);
if (s == 0) {
if (symbol.storage_class == COFF_SymStorageClass_External) {
LNK_Symbol *undef = lnk_make_undefined_symbol(arena, symbol.name, obj);
lnk_symbol_list_push(arena, &task->undef_lists[worker_id], undef);
} else if (symbol.storage_class == COFF_SymStorageClass_Section) {
// lookup is performed during image patching step
} else {
Assert(!"unexpected storage class on undefined symbol");
}
if (symbol.storage_class == COFF_SymStorageClass_External) {
LNK_Symbol *defn = lnk_make_defined_symbol(arena, symbol.name, obj, symbol_idx);
lnk_symbol_table_push_(task->symtab, arena, worker_id, LNK_SymbolScope_Defined, defn);
}
} break;
case COFF_SymbolValueInterp_Debug: {
@@ -426,27 +418,16 @@ THREAD_POOL_TASK_FUNC(lnk_assign_comdat_symlinks_task)
obj->symlinks = lnk_symlinks_from_obj(arena, task->symtab, obj);
}
internal LNK_SymbolInputResult
internal void
lnk_input_obj_symbols(TP_Context *tp, TP_Arena *arena, LNK_SymbolTable *symtab, LNK_ObjNodeArray objs)
{
ProfBeginFunction();
Temp scratch = scratch_begin(arena->v, arena->count);
LNK_InputCoffSymbolTable task = {0};
task.symtab = symtab;
task.objs = objs;
task.weak_lists = push_array(scratch.arena, LNK_SymbolList, tp->worker_count);
task.undef_lists = push_array(scratch.arena, LNK_SymbolList, tp->worker_count);
LNK_InputCoffSymbolTable task = { .symtab = symtab, .objs = objs };
tp_for_parallel(tp, arena, objs.count, lnk_input_coff_symbol_table, &task);
tp_for_parallel(tp, arena, objs.count, lnk_assign_comdat_symlinks_task, &task);
LNK_SymbolInputResult result = {0};
SLLConcatInPlaceArray(&result.weak_symbols, task.weak_lists, tp->worker_count);
SLLConcatInPlaceArray(&result.undef_symbols, task.undef_lists, tp->worker_count);
scratch_end(scratch);
ProfEnd();
return result;
}
internal COFF_ParsedSymbol