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WIP stripped PDB

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This commit is contained in:
Nikita Smith
2026-04-10 17:02:04 -07:00
parent b4bbc38ab2
commit 89a5acba2c
7 changed files with 152 additions and 40 deletions
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src/linker/lnk.c
+72 -1
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@@ -2123,7 +2123,7 @@ lnk_link_image(TP_Context *tp, TP_Arena *arena, LNK_Config *config, LNK_Inputer
}
ProfBegin("Build * Debug Directories *");
if (config->debug_mode != LNK_DebugMode_None && config->debug_mode != LNK_DebugMode_Null) {
if (lnk_do_debug_info(config)) {
String8 pdb_dir_obj = pe_make_debug_directory_pdb_obj(arena->v[0], config->machine, config->guid, config->age, config->time_stamp, config->pdb_alt_path);
lnk_inputer_push_obj_linkgen(inputer, 0, str8_lit("* Debug Directory PDB *"), pdb_dir_obj);
}
@@ -5298,6 +5298,77 @@ lnk_run(TP_Context *tp, TP_Arena *arena, LNK_Config *config)
lnk_timer_end(LNK_Timer_Pdb);
}
//
// stripped PDB
//
if (config->pdb_stripped_name.size != 0) {
CV_DebugS *debug_s_arr = push_array(scratch.arena, CV_DebugS, cv.obj_count);
for EachIndex(obj_idx, cv.obj_count) {
CV_DebugS *debug_s_dst = &debug_s_arr[obj_idx];
CV_DebugS *debug_s_src = &cv.debug_s_arr[obj_idx];
String8List *dst = &debug_s_dst->data_list[CV_C13SubSectionIdxKind_Symbols];
String8List *src = &debug_s_src->data_list[CV_C13SubSectionIdxKind_Symbols];
U64 proc_count = 0;
U64 proc_size = 0;
U64 section = 0;
for EachNode(n, String8Node, src->first) {
for (U64 cursor = 0; cursor < n->string.size; ) {
U64 c = cursor;
CV_Symbol symbol = {0};
TryReadBreak(cv_read_symbol(n->string, cursor, CV_SymbolAlign, &symbol), cursor);
if (symbol.kind == CV_SymKind_SKIP) { continue; }
if (cv_is_lproc(symbol)) {
proc_count += 1;
proc_size += AlignPow2(symbol.data.size, CV_SymbolAlign);
}
}
section += 1;
}
if (proc_count) {
U64 end_count = proc_count;
U64 symbol_count = proc_count + end_count;
U64 buffer_size = proc_size + sizeof(CV_SymbolHeader) * symbol_count;
U8 *buffer = push_array(scratch.arena, U8, buffer_size);
U64 buffer_cursor = 0;
for EachNode(n, String8Node, src->first) {
for (U64 cursor = 0; cursor < n->string.size; ) {
CV_Symbol symbol = {0};
TryReadBreak(cv_read_symbol(n->string, cursor, CV_SymbolAlign, &symbol), cursor);
if (symbol.kind == CV_SymKind_SKIP) { continue; }
if (cv_is_lproc(symbol)) {
CV_SymProc32 *src_proc = (CV_SymProc32 *)symbol.data.str;
src_proc->itype = 0;
CV_Symbol end_symbol = { .kind = CV_SymKind_END };
buffer_cursor += cv_write_symbol(buffer, buffer_cursor, buffer_size, &symbol, CV_SymbolAlign);
buffer_cursor += cv_write_symbol(buffer, buffer_cursor, buffer_size, &end_symbol, CV_SymbolAlign);
}
}
}
Assert(buffer_cursor == buffer_size);
str8_list_push(scratch.arena, dst, str8(buffer, buffer_size));
}
}
LNK_CodeViewInput stripped_cv = {0};
stripped_cv.io_flags = config->io_flags;
stripped_cv.is_stripped = 1;
stripped_cv.obj_arr = cv.obj_arr;
stripped_cv.obj_count = cv.obj_count;
stripped_cv.count = cv.obj_count;
stripped_cv.debug_s_arr = debug_s_arr;
stripped_cv.symbol_input_ranges = push_array(scratch.arena, Rng1U64, tp->worker_count);
String8List pdb_data = lnk_build_pdb(tp, arena, image_ctx.image_data, config, symtab, &stripped_cv, (LNK_MergedTypes){0});
lnk_write_data_list_to_file_path(config->pdb_stripped_name, str8f(scratch.arena, "%S.tmp", config->pdb_stripped_name), pdb_data);
}
lnk_timer_end(LNK_Timer_Debug);
ProfEnd();
}