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test for communal variable

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This commit is contained in:
Nikita Smith
2025-05-26 15:40:00 -07:00
committed by Ryan Fleury
parent 40efbeb512
commit 9060004827
1 changed files with 70 additions and 0 deletions
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src/torture/torture.c
+70
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@@ -2952,6 +2952,75 @@ t_include(void)
return result;
}
internal T_Result
t_communal_var(void)
{
Temp scratch = scratch_begin(0,0);
T_Result result = T_Result_Fail;
{
COFF_ObjWriter *obj_writer = coff_obj_writer_alloc(0, COFF_MachineType_X64);
coff_obj_writer_push_symbol_common(obj_writer, str8_lit("TEST"), 1);
String8 obj = coff_obj_writer_serialize(scratch.arena, obj_writer);
coff_obj_writer_release(&obj_writer);
if (!t_write_file(str8_lit("communal.obj"), obj)) { goto exit; }
}
{
COFF_ObjWriter *obj_writer = coff_obj_writer_alloc(0, COFF_MachineType_X64);
COFF_ObjSection *sect = t_push_data_section(obj_writer, str8_lit("test"));
sect->flags |= COFF_SectionFlag_LnkCOMDAT;
coff_obj_writer_push_symbol_secdef(obj_writer, sect, COFF_ComdatSelect_Largest);
coff_obj_writer_push_symbol_extern(obj_writer, str8_lit("TEST"), 0, sect);
String8 obj = coff_obj_writer_serialize(scratch.arena, obj_writer);
coff_obj_writer_release(&obj_writer);
if (!t_write_file(str8_lit("large.obj"), obj)) { goto exit; }
}
{
COFF_ObjWriter *obj_writer = coff_obj_writer_alloc(0, COFF_MachineType_X64);
U8 text[] = {
0x48, 0xC7, 0xC0, 0x00, 0x00, 0x00, 0x00, // mov rax, $imm
0xC3 // ret
};
COFF_ObjSection *sect = coff_obj_writer_push_section(obj_writer, str8_lit(".text"), PE_TEXT_SECTION_FLAGS, str8_array_fixed(text));
coff_obj_writer_push_symbol_extern(obj_writer, str8_lit("entry"), 0, sect);
COFF_ObjSymbol *symbol = coff_obj_writer_push_symbol_undef(obj_writer, str8_lit("TEST"));
coff_obj_writer_section_push_reloc_voff(obj_writer, sect, 0, symbol);
String8 obj = coff_obj_writer_serialize(scratch.arena, obj_writer);
coff_obj_writer_release(&obj_writer);
if (!t_write_file(str8_lit("entry.obj"), obj)) {
goto exit;
}
}
// linker should replace communal TEST with .data TEST
int linker_exit_code;
linker_exit_code = t_invoke_linkerf("/subsystem:console /entry:entry /out:a.exe communal.obj large.obj entry.obj");
if (linker_exit_code != 0) { goto exit; }
linker_exit_code = t_invoke_linkerf("/subsystem:console /entry:entry /out:b.exe large.obj communal.obj entry.obj");
if (linker_exit_code != 0) { goto exit; }
char *exes[] = { "a.exe", "b.exe" };
for (U64 i = 0; i < ArrayCount(exes); i += 1) {
String8 exe = t_read_file(scratch.arena, str8_cstring(exes[i]));
PE_BinInfo pe = pe_bin_info_from_data(scratch.arena, exe);
COFF_SectionHeader *section_table = (COFF_SectionHeader *)str8_substr(exe, pe.section_table_range).str;
String8 string_table = str8_substr(exe, pe.string_table_range);
COFF_SectionHeader *data_sect = t_coff_section_header_from_name(string_table, section_table, pe.section_count, str8_lit(".data"));
if (!data_sect) { goto exit; }
String8 data = str8_substr(exe, rng_1u64(data_sect->foff, data_sect->foff + data_sect->vsize));
if (!str8_match(data, str8_lit("test"), 0)) { goto exit; }
}
result = T_Result_Pass;
exit:;
scratch_end(scratch);
return result;
}
////////////////////////////////////////////////////////////////
internal void
@@ -2999,6 +3068,7 @@ entry_point(CmdLine *cmdline)
{ "comdat_associative_out_of_bounds", t_comdat_associative_out_of_bounds },
{ "alt_name", t_alt_name },
{ "include", t_include },
{ "communal_var", t_communal_var },
//{ "import_export", t_import_export },
};