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zld: parse addend from BRANCH reloc on x86_64

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As usual, MachO, full of surprises!
This commit is contained in:
Jakub Konka 2022-01-12 23:28:33 +01:00
parent 16c55b15cb
commit a8564df9ed
1 changed files with 2 additions and 1 deletions
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3
src/link/MachO/Atom.zig
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@ -419,6 +419,7 @@ pub fn parseRelocs(self: *Atom, relocs: []macho.relocation_info, context: RelocC
.X86_64_RELOC_BRANCH => {
// TODO rewrite relocation
try addStub(target, context);
addend = mem.readIntLittle(i32, self.code.items[offset..][0..4]);
},
.X86_64_RELOC_GOT, .X86_64_RELOC_GOT_LOAD => {
// TODO rewrite relocation
@ -1003,7 +1004,7 @@ pub fn resolveRelocs(self: *Atom, macho_file: *MachO) !void {
.X86_64_RELOC_BRANCH => {
const displacement = try math.cast(
i32,
@intCast(i64, target_addr) - @intCast(i64, source_addr) - 4,
@intCast(i64, target_addr) - @intCast(i64, source_addr) - 4 + rel.addend,
);
mem.writeIntLittle(u32, self.code.items[rel.offset..][0..4], @bitCast(u32, displacement));
},