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simplify COFF reloc apply helper

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Nikita Smith authored and Ryan Fleury committed 2025-06-25 10:53:22 -07:00
1 parent a5b3df7d1b
commit 63a374cf54
2 files changed
+21 -20
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src/coff/coff.c
+13 -20
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@@ -179,18 +179,17 @@ coff_apply_size_from_reloc(COFF_MachineType machine, COFF_RelocType x)
return 0;
}
internal void
coff_apply_reloc_x64(String8 data,
COFF_Reloc_X64 type,
U64 apply_off,
U64 reloc_virtual_offset,
U32 symbol_section_number,
U32 symbol_section_offset,
U32 symbol_virtual_offset,
U64 symbol_address)
internal COFF_RelocValue
coff_pick_reloc_value_x64(COFF_Reloc_X64 type,
U64 reloc_virtual_offset,
U32 symbol_section_number,
U32 symbol_section_offset,
U32 symbol_virtual_offset,
U64 symbol_address)
{
U64 reloc_value_size = 0;
S64 reloc_value = 0;
switch (type) {
case COFF_Reloc_X64_Abs: {} break;
case COFF_Reloc_X64_Addr64: {
@@ -199,7 +198,7 @@ coff_apply_reloc_x64(String8 data,
} break;
case COFF_Reloc_X64_Addr32: {
reloc_value_size = 4;
reloc_value = safe_cast_u32(symbol_address);
reloc_value = symbol_address;
} break;
case COFF_Reloc_X64_Addr32Nb: {
reloc_value_size = 4;
@@ -254,17 +253,11 @@ coff_apply_reloc_x64(String8 data,
} break;
}
// read addend
Assert(apply_off + reloc_value_size <= data.size);
U64 raw_addend = 0;
str8_deserial_read(data, apply_off, &raw_addend, reloc_value_size, reloc_value_size);
COFF_RelocValue result = {0};
result.size = reloc_value_size;
result.value = reloc_value;
// compute new reloc value
S64 addend = extend_sign64(raw_addend, reloc_value_size);
U64 reloc_result = reloc_value + addend;
// commit new reloc value
MemoryCopy(data.str + apply_off, &reloc_result, reloc_value_size);
return result;
}
internal String8