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add support for /DEBUG:GHASH

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This commit is contained in:
Nikita Smith
2026-04-22 09:30:45 -07:00
committed by Ryan Fleury
parent 4815007ac1
commit a2aab5967c
6 changed files with 71 additions and 24 deletions
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CHANGELOG.md
+6
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@@ -1,3 +1,9 @@
# v0.9.26-alpha
## Linker Changes
- Implemented /DEBUG:GHASH
# v0.9.25-alpha
## Debugger Changes
src/linker/lnk_config.c
+1 -1
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@@ -1237,7 +1237,7 @@ lnk_apply_cmd_option_to_config(LNK_Config *config, String8 cmd_name, String8List
LNK_DebugMode debug_mode = lnk_debug_mode_from_string(value_strings.first->string);
if (debug_mode == LNK_DebugMode_GHash) {
config->debug_mode = LNK_DebugMode_Full;
lnk_error_cmd_switch(LNK_Warning_Cmdl, obj, cmd_switch, "GHASH is not supported, switching to FULL");
config->ghash = 1;
} else if (debug_mode == LNK_DebugMode_FastLink) {
config->debug_mode = LNK_DebugMode_Full;
lnk_error_cmd_switch(LNK_Warning_Cmdl, obj, cmd_switch, "FASTLINK is not supported, switching to FULL");
src/linker/lnk_config.h
+1
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@@ -266,6 +266,7 @@ typedef struct LNK_Config
Arena *arena;
LNK_ConfigFlags flags;
LNK_DebugMode debug_mode;
B32 ghash;
LNK_SwitchState opt_ref;
LNK_SwitchState opt_icf;
LNK_SwitchState opt_lbr;
src/linker/lnk_debug_info.c
+12 -6
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@@ -279,7 +279,9 @@ lnk_make_code_view_input(TP_Context *tp, TP_Arena *tp_arena, LNK_Config *config,
input.debug_s_list_arr = lnk_collect_obj_sections(tp, tp_arena, obj_count, obj_arr, str8_lit(".debug$S"), 0);
input.debug_p_list_arr = lnk_collect_obj_sections(tp, tp_arena, obj_count, obj_arr, str8_lit(".debug$P"), 0);
input.debug_t_list_arr = lnk_collect_obj_sections(tp, tp_arena, obj_count, obj_arr, str8_lit(".debug$T"), 0);
input.debug_h_list_arr = lnk_collect_obj_sections(tp, tp_arena, obj_count, obj_arr, str8_lit(".debug$H"), 0);
if (config->ghash) {
input.debug_h_list_arr = lnk_collect_obj_sections(tp, tp_arena, obj_count, obj_arr, str8_lit(".debug$H"), 0);
}
ProfEnd();
if (lnk_get_log_status(LNK_Log_Debug) || PROFILE_TELEMETRY) {
@@ -288,7 +290,9 @@ lnk_make_code_view_input(TP_Context *tp, TP_Arena *tp_arena, LNK_Config *config,
for EachNode(n, String8Node, input.debug_s_list_arr[obj_idx].first) { total_debug_s_size += n->string.size; }
for EachNode(n, String8Node, input.debug_t_list_arr[obj_idx].first) { total_debug_t_size += n->string.size; }
for EachNode(n, String8Node, input.debug_p_list_arr[obj_idx].first) { total_debug_p_size += n->string.size; }
for EachNode(n, String8Node, input.debug_h_list_arr[obj_idx].first) { total_debug_h_size += n->string.size; }
if (config->ghash) {
for EachNode(n, String8Node, input.debug_h_list_arr[obj_idx].first) { total_debug_h_size += n->string.size; }
}
}
ProfNoteV("Total .debug$S Input Size: %M", total_debug_s_size);
@@ -324,7 +328,9 @@ lnk_make_code_view_input(TP_Context *tp, TP_Arena *tp_arena, LNK_Config *config,
tp_for_parallel_prof(tp, tp_arena, obj_count, lnk_parse_debug_t_task, &parse_types, "Parse .debug$T");
input.debug_h_arr = push_array(tp_arena->v[0], CV_DebugH, input.obj_count);
tp_for_parallel_prof(tp, tp_arena, obj_count, lnk_parse_debug_h_task, &input, "Parse .debug$H");
if (config->ghash) {
tp_for_parallel_prof(tp, tp_arena, obj_count, lnk_parse_debug_h_task, &input, "Parse .debug$H");
}
}
ProfEnd();
@@ -426,6 +432,7 @@ lnk_make_code_view_input(TP_Context *tp, TP_Arena *tp_arena, LNK_Config *config,
MemoryCopyTyped(input.obj_arr, prev.obj_arr, prev.count);
MemoryCopyTyped(input.debug_s_arr, prev.debug_s_arr, prev.count);
MemoryCopyTyped(input.debug_t_arr, prev.debug_t_arr, prev.count);
MemoryCopyTyped(input.debug_h_arr, prev.debug_h_arr, prev.count);
MemoryCopyTyped(input.obj_to_ts, prev.obj_to_ts, prev.count);
MemorySet(input.obj_to_ts + input.obj_count, 0xff, ts_arr.count * sizeof(input.obj_to_ts[0]));
@@ -1437,15 +1444,14 @@ lnk_merge_types(TP_Context *tp, TP_Arena *tp_temp, LNK_CodeViewInput *input)
for EachElement(i, hash_targets) {
task.indices = hash_targets[i].hash_indices;
ProfBegin("Hash [Count: %.*s]", str8_varg(str8_from_count(scratch.arena, task.indices.count)));
tp_for_parallel(tp, 0, hash_targets[i].indices.count, hash_targets[i].hasher_task, &task);
tp_for_parallel(tp, 0, task.indices.count, hash_targets[i].hasher_task, &task);
ProfEnd();
}
#if BUILD_DEBUG
for EachIndex(i, input->count) {
for EachIndex(k, input->debug_h_arr[i].count) {
Assert(input->debug_h_arr[i].v[k] != 0 &&
input->debug_h_arr[i].v[k] != 1);
Assert(input->debug_h_arr[i].v[k] != 0);
}
}
#endif
src/llvm/llvm.h
+2 -1
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@@ -18,12 +18,13 @@ typedef enum LLVM_GHashAlgEnum
typedef struct LLVM_GHash
{
U32 magic;
LLVM_GHashAlg hash_alg;
U16 version;
LLVM_GHashAlg hash_alg;
// * hashes[]
} LLVM_GHash;
internal String8 llvm_string_from_ghash_alg(LLVM_GHashAlg v);
internal U64 llvm_hash_size_from_alg(LLVM_GHashAlg v);
#endif // LLVM_H
src/torture/torture_radlink.c
+49 -16
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@@ -5028,7 +5028,7 @@ TEST(ghash_check_corrupt)
T_Ok(t_write_entry_obj());
String8 output = {0};
t_invoke_(t_radlink_path(), str8_lit("/subsystem:console /entry:entry /out:a.exe /debug:full entry.obj debug.obj"), max_U64, arena, &output);
t_invoke_(t_radlink_path(), str8_lit("/subsystem:console /entry:entry /out:a.exe /debug:ghash entry.obj debug.obj"), max_U64, arena, &output);
T_Ok(g_last_exit_code == 0);
B32 is_warning_found = 0;
@@ -5075,7 +5075,7 @@ TEST(ghash_check_magic)
T_Ok(t_write_entry_obj());
String8 output = {0};
t_invoke_(t_radlink_path(), str8_lit("/subsystem:console /entry:entry /out:a.exe /debug:full entry.obj debug.obj"), max_U64, arena, &output);
t_invoke_(t_radlink_path(), str8_lit("/subsystem:console /entry:entry /out:a.exe /debug:ghash entry.obj debug.obj"), max_U64, arena, &output);
T_Ok(g_last_exit_code == 0);
B32 is_warning_found = 0;
@@ -5122,7 +5122,7 @@ TEST(ghash_check_version)
T_Ok(t_write_entry_obj());
String8 output = {0};
t_invoke_(t_radlink_path(), str8_lit("/subsystem:console /entry:entry /out:a.exe /debug:full entry.obj debug.obj"), max_U64, arena, &output);
t_invoke_(t_radlink_path(), str8_lit("/subsystem:console /entry:entry /out:a.exe /debug:ghash entry.obj debug.obj"), max_U64, arena, &output);
T_Ok(g_last_exit_code == 0);
B32 is_warning_found = 0;
@@ -5161,7 +5161,7 @@ TEST(ghash_check_hash_alg)
T_Ok(t_write_entry_obj());
String8 output = {0};
t_invoke_(t_radlink_path(), str8_lit("/subsystem:console /entry:entry /out:a.exe /debug:full entry.obj debug.obj"), max_U64, arena, &output);
t_invoke_(t_radlink_path(), str8_lit("/subsystem:console /entry:entry /out:a.exe /debug:ghash entry.obj debug.obj"), max_U64, arena, &output);
T_Ok(g_last_exit_code == 0);
B32 is_warning_found = 0;
@@ -5200,7 +5200,7 @@ TEST(ghash_match_debug_t)
T_Ok(t_write_entry_obj());
String8 output = {0};
t_invoke_(t_radlink_path(), str8_lit("/subsystem:console /entry:entry /out:a.exe /debug:full entry.obj debug.obj"), max_U64, arena, &output);
t_invoke_(t_radlink_path(), str8_lit("/subsystem:console /entry:entry /out:a.exe /debug:ghash entry.obj debug.obj"), max_U64, arena, &output);
T_Ok(g_last_exit_code == 0);
B32 is_warning_found = 0;
@@ -5213,7 +5213,6 @@ TEST(ghash_match_debug_t)
T_Ok(is_warning_found);
}
#if 0
TEST(ghash_basic)
{
String8 a_obj;
@@ -5239,23 +5238,57 @@ TEST(ghash_basic)
coff_obj_writer_release(&cow);
}
String8 b_obj;
{
String8List t = {0}; str8_serial_begin(arena, &t);
str8_serial_push_u32(arena, &t, CV_Signature_C13);
str8_serial_push_string(arena, &t, cv_make_leaf(arena, CV_LeafKind_STRUCTURE, str8_struct(&(CV_LeafStruct){ .props = CV_TypeProp_FwdRef }), CV_LeafAlign));
str8_serial_push_string(arena, &t, cv_make_leaf(arena, CV_LeafKind_UNION, str8_struct(&(CV_LeafUnion){ .props = CV_TypeProp_FwdRef }), CV_LeafAlign));
str8_serial_push_string(arena, &t, cv_make_leaf(arena, CV_LeafKind_ENUM, str8_struct(&(CV_LeafEnum){ .props = CV_TypeProp_FwdRef }), CV_LeafAlign));
String8 debug_t = str8_serial_end(arena, &t);
String8List h = {0}; str8_serial_begin(arena, &h);
str8_serial_push_struct(arena, &h, (&(LLVM_GHash){ .magic = LLVM_GHash_Magic, .hash_alg = LLVM_GHashAlg_BLAKE3, .version = LLVM_GHash_CurrentVersion }));
str8_serial_push_u64(arena, &h, 4);
str8_serial_push_u64(arena, &h, 5);
str8_serial_push_u64(arena, &h, 6);
String8 debug_h = str8_serial_end(arena, &h);
COFF_ObjWriter *cow = coff_obj_writer_alloc(0, COFF_MachineType_X64);
coff_obj_writer_push_section(cow, str8_lit(".debug$T"), PE_DEBUG_SECTION_FLAGS, debug_t);
coff_obj_writer_push_section(cow, str8_lit(".debug$H"), PE_DEBUG_SECTION_FLAGS, debug_h);
b_obj = coff_obj_writer_serialize(arena, cow);
coff_obj_writer_release(&cow);
}
T_Ok(t_write_file(str8_lit("a.obj"), a_obj));
T_Ok(t_write_file(str8_lit("b.obj"), b_obj));
T_Ok(t_write_entry_obj());
String8 output = {0};
t_invoke_(t_radlink_path(), str8_lit("/subsystem:console /entry:entry /out:a.exe /debug:full entry.obj a.obj"), max_U64, arena, &output);
t_invoke_linkerf("/subsystem:console /entry:entry /out:a.exe /debug:ghash entry.obj a.obj b.obj");
T_Ok(g_last_exit_code == 0);
B32 is_warning_found = 0;
String8 a_obj_path = t_make_file_path(arena, str8_lit("a.obj"));
String8 expected_line = str8f(arena, "Warning(%03u): %S: mismatched .debug$H hash count and type count: got 3 hashes for 2 types", LNK_Warning_GHash, a_obj_path);
for (String8 i = output; i.size > 0 && !is_warning_found; ) {
String8 line = t_chop_line(&i);
is_warning_found = str8_match(expected_line, line, StringMatchFlag_CaseInsensitive);
{
String8 raw_pdb = t_read_file(arena, str8_lit("a.pdb"));
MSF_Parsed *msf_parsed = msf_parsed_from_data(arena, raw_pdb);
String8 raw_tpi = msf_data_from_stream(msf_parsed, PDB_FixedStream_Tpi);
PDB_TpiParsed *tpi = pdb_tpi_from_data(arena, raw_tpi);
U64 leaf_count = tpi->itype_opl - tpi->itype_first;
T_Ok(leaf_count == 6);
}
t_invoke_linkerf("/subsystem:console /entry:entry /out:a.exe /debug:full entry.obj a.obj b.obj");
T_Ok(g_last_exit_code == 0);
{
String8 raw_pdb = t_read_file(arena, str8_lit("a.pdb"));
MSF_Parsed *msf_parsed = msf_parsed_from_data(arena, raw_pdb);
String8 raw_tpi = msf_data_from_stream(msf_parsed, PDB_FixedStream_Tpi);
PDB_TpiParsed *tpi = pdb_tpi_from_data(arena, raw_tpi);
U64 leaf_count = tpi->itype_opl - tpi->itype_first;
T_Ok(leaf_count == 3);
}
T_Ok(is_warning_found);
}
#endif
TEST(patch_cv_symbol_tree)
{