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create section contribution for common block

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This commit is contained in:
Nikita Smith
2025-06-25 10:53:24 -07:00
committed by Ryan Fleury
parent 95bea877ab
commit a484906cf9
4 changed files with 59 additions and 44 deletions
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src/torture/torture.c
+4 -3
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@@ -1629,6 +1629,7 @@ t_common_block(void)
COFF_ObjSymbol *symbol = coff_obj_writer_push_symbol_common(obj_writer, str8_lit("A"), 3);
COFF_ObjSection *data_sect = t_push_data_section(obj_writer, str8_array_fixed(a_data));
data_sect->flags |= COFF_SectionFlag_Align1Bytes;
coff_obj_writer_push_section(obj_writer, str8_lit(".bss"), PE_BSS_SECTION_FLAGS, str8(0, 1)); // shift common block's initial position
coff_obj_writer_section_push_reloc(obj_writer, data_sect, 0, symbol, COFF_Reloc_X64_Addr32);
String8 a_obj = coff_obj_writer_serialize(scratch.arena, obj_writer);
coff_obj_writer_release(&obj_writer);
@@ -1672,14 +1673,14 @@ t_common_block(void)
if (data_sect == 0) { goto exit; }
// blocks must be sorted in descending order to reduce alignment padding
if (comm_sect->vsize != 0xB) { goto exit; }
if (comm_sect->vsize != 0x13) { goto exit; }
// ensure linker correctly patched addresses for symbols pointing into common block
String8 data = str8_substr(exe, rng_1u64(data_sect->foff, data_sect->foff + data_sect->fsize));
U32 *a_addr = (U32 *)data.str;
U64 *b_addr = (U64 *)(data.str + sizeof(a_data));
if (*a_addr != (pe.image_base + comm_sect->voff + 0x8)) { goto exit; }
if (*b_addr != (pe.image_base + comm_sect->voff + 0x0)) { goto exit; }
if (*a_addr != (pe.image_base + comm_sect->voff + 0x10)) { goto exit; }
if (*b_addr != (pe.image_base + comm_sect->voff + 0x8)) { goto exit; }
result = T_Result_Pass;
exit:;