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WIP rework GSI and PSI symbol writer

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This commit is contained in:
Nikita Smith
2026-04-06 12:04:32 -07:00
parent 883935d44e
commit d7cfd5f55a
8 changed files with 432 additions and 568 deletions
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src/linker/codeview_ext/codeview.c
+20 -30
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@@ -192,21 +192,8 @@ cv_precomp_info_from_leaf(CV_Leaf leaf)
//~ Symbol Helpers
internal U64
cv_size_from_symbol(CV_Symbol *symbol, U64 align)
cv_write_symbol_buf(String8Node *buf, U64 *buf_pos, CV_Symbol *symbol, U64 align)
{
U64 size = 0;
size += sizeof(CV_SymSize);
size += sizeof(CV_SymKind);
size += AlignPow2(symbol->data.size, align);
return size;
}
internal U64
cv_write_symbol(U8 *buffer, U64 buffer_cursor, U64 buffer_size, CV_Symbol *symbol, U64 align)
{
U64 write_size = cv_size_from_symbol(symbol, align);
Assert(buffer_cursor + write_size <= buffer_size);
U64 record_size = 0;
record_size += sizeof(symbol->kind);
record_size += AlignPow2(symbol->data.size, align);
@@ -214,23 +201,28 @@ cv_write_symbol(U8 *buffer, U64 buffer_cursor, U64 buffer_size, CV_Symbol *symbo
Assert(record_size <= CV_SymSize_Max);
CV_SymSize record_size16 = (CV_SymSize)record_size;
// init header
CV_SymbolHeader *header = (CV_SymbolHeader *)(buffer + buffer_cursor);
header->size = record_size16;
header->kind = symbol->kind;
// copy symbol data
U8 *data_dst = (U8 *)(header + 1);
MemoryCopy(data_dst, symbol->data.str, symbol->data.size);
// set pad bytes
U64 pad_size = AlignPadPow2(symbol->data.size, align);
U8 *pad_dst = data_dst + symbol->data.size;
MemorySet(&pad_dst[0], 0, pad_size);
U64 write_size = 0;
write_size += str8_buffer_write(buf, buf_pos, str8((U8 *)&(CV_SymbolHeader){ .size = record_size16, .kind = symbol->kind }, sizeof(CV_SymbolHeader)));
write_size += str8_buffer_write(buf, buf_pos, symbol->data);
write_size += str8_buffer_write_zeroes(buf, buf_pos, AlignPadPow2(symbol->data.size, align));
return write_size;
}
internal U64
cv_write_symbol(U8 *buffer, U64 buffer_cursor, U64 buffer_size, CV_Symbol *symbol, U64 align)
{
String8Node dummy_curr = { .string = str8(buffer + buffer_cursor, buffer_size - buffer_cursor) };
U64 dummy_pos = 0;
return cv_write_symbol_buf(&dummy_curr, &dummy_pos, symbol, align);
}
internal U64
cv_size_from_symbol(CV_Symbol *symbol, U64 align)
{
return cv_write_symbol_buf(0, 0, symbol, align);
}
internal String8
cv_data_from_symbol(Arena *arena, CV_Symbol *symbol, U64 align)
{
@@ -1532,9 +1524,7 @@ cv_patch_symbol_tree_offsets_new(String8List raw_symbols, U64 base_offset, U64 a
for EachNode(n, String8Node, raw_symbols.first) {
for (U64 cursor = 0, depth = 0; cursor + sizeof(CV_SymbolHeader) <= 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; }
TryReadBreak(cv_read_symbol(n->string, cursor, align, &symbol), cursor);
if (cv_is_scope_symbol(symbol.kind)) {
// NOTE: We don't patch 'next' offset in PROC symbols because