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function pad min - final pass over

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This commit is contained in:
Nikita Smith
2025-06-25 10:53:24 -07:00
committed by Ryan Fleury
parent bbb825adf4
commit b19be0574c
5 changed files with 79 additions and 181 deletions
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src/torture/torture.c
+14 -10
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@@ -309,7 +309,7 @@ typedef enum
internal COFF_ObjSection *
t_push_text_section(COFF_ObjWriter *obj_writer, String8 data)
{
return coff_obj_writer_push_section(obj_writer, str8_lit(".text"), PE_TEXT_SECTION_FLAGS, data);
return coff_obj_writer_push_section(obj_writer, str8_lit(".text"), PE_TEXT_SECTION_FLAGS | COFF_SectionFlag_Align1Bytes, data);
}
internal COFF_ObjSection *
@@ -3360,17 +3360,21 @@ t_function_pad_min(void)
{
COFF_ObjWriter *obj_writer = coff_obj_writer_alloc(0, COFF_MachineType_X64);
U8 ret[] = { 0xc3, 0xc3, 0xc3 };
COFF_ObjSection *text_sect = t_push_text_section(obj_writer, str8_array_fixed(ret));
coff_obj_writer_push_symbol_extern_func(obj_writer, str8_lit("A"), 0, text_sect);
coff_obj_writer_push_symbol_extern_func(obj_writer, str8_lit("B"), 1, text_sect);
coff_obj_writer_push_symbol_extern_func(obj_writer, str8_lit("C"), 2, text_sect);
U8 ret[] = { 0xc3 };
COFF_ObjSection *text_sect_0 = t_push_text_section(obj_writer, str8_array_fixed(ret));
COFF_ObjSection *text_sect_1 = t_push_text_section(obj_writer, str8_array_fixed(ret));
COFF_ObjSection *text_sect_2 = t_push_text_section(obj_writer, str8_array_fixed(ret));
text_sect_0->flags |= COFF_SectionFlag_Align4Bytes;
text_sect_1->flags |= COFF_SectionFlag_Align2Bytes;
coff_obj_writer_push_symbol_extern_func(obj_writer, str8_lit("A"), 0, text_sect_0);
coff_obj_writer_push_symbol_extern_func(obj_writer, str8_lit("B"), 0, text_sect_1);
coff_obj_writer_push_symbol_extern_func(obj_writer, str8_lit("C"), 0, text_sect_2);
String8 obj = coff_obj_writer_serialize(scratch.arena, obj_writer);
coff_obj_writer_release(&obj_writer);
if (!t_write_file(str8_lit("funcs.obj"), obj)) { goto exit; }
}
int linker_exit_code = t_invoke_linkerf("/subsystem:console /entry:A /functionpadmin:8 /out:a.exe funcs.obj");
int linker_exit_code = t_invoke_linkerf("/subsystem:console /entry:A /functionpadmin:1 /out:a.exe funcs.obj");
if (linker_exit_code != 0) { goto exit; }
String8 exe = t_read_file(scratch.arena, str8_lit("a.exe"));
@@ -3382,9 +3386,9 @@ t_function_pad_min(void)
String8 text_data = str8_substr(exe, rng_1u64(text_sect->foff, text_sect->foff + text_sect->vsize));
U8 expected_text[] = {
0xc3, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc,
0xc3, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc,
0xc3, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc
0xcc, 0xcc, 0xcc, 0xcc, 0xc3,
0xcc, 0xcc, 0xcc, 0xc3,
0xcc, 0xc3,
};
if (!str8_match(text_data, str8_array_fixed(expected_text), 0)) { goto exit; }