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stage2 macho: write out constants in CS

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This commit is contained in:
Jakub Konka
2020-11-20 00:35:46 +01:00
parent 2bd963ad6a
commit 3ac804628f
1 changed files with 51 additions and 0 deletions
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51
src/link/MachO.zig
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@@ -1754,6 +1754,57 @@ fn writeAllUndefSymbols(self: *MachO) !void {
fn codeSign(self: *MachO) !void {
const code_sig_cmd = &self.load_commands.items[self.code_signature_cmd_index.?].LinkeditData;
// TODO add actual code signing mechanism
var buffer: std.ArrayListUnmanaged(u8) = .{};
defer buffer.deinit(self.base.allocator);
// var super_blob = macho.SuperBlob{
// .magic = macho.CSMAGIC_EMBEDDED_SIGNATURE,
// .length = 0,
// .count = 2,
// };
const length: u32 = @sizeOf(u32) * 12;
try buffer.ensureCapacity(self.base.allocator, length);
var buf: [@sizeOf(u32)]u8 = undefined;
mem.writeIntBig(u32, &buf, macho.CSMAGIC_EMBEDDED_SIGNATURE);
buffer.appendSliceAssumeCapacity(buf[0..]);
mem.writeIntBig(u32, &buf, length);
buffer.appendSliceAssumeCapacity(buf[0..]);
mem.writeIntBig(u32, &buf, 2);
buffer.appendSliceAssumeCapacity(buf[0..]);
// macho.BlobIndex{
// .type = macho.CSSLOT_REQUIREMENTS,
// .offset = offset,
// };
mem.writeIntBig(u32, &buf, macho.CSSLOT_REQUIREMENTS);
buffer.appendSliceAssumeCapacity(buf[0..]);
mem.writeIntBig(u32, &buf, 28);
buffer.appendSliceAssumeCapacity(buf[0..]);
// macho.BlobIndex{
// .type = macho.CSSLOT_SIGNATURESLOT,
// .offset = offset,
// };
mem.writeIntBig(u32, &buf, macho.CSSLOT_SIGNATURESLOT);
buffer.appendSliceAssumeCapacity(buf[0..]);
mem.writeIntBig(u32, &buf, 40);
buffer.appendSliceAssumeCapacity(buf[0..]);
// const requirements_blob = macho.GenericBlob{
// .magic = macho.CSMAGIC_REQUIREMENTS,
// .length = 0,
// };
mem.writeIntBig(u32, &buf, macho.CSMAGIC_REQUIREMENTS);
buffer.appendSliceAssumeCapacity(buf[0..]);
mem.writeIntBig(u32, &buf, @sizeOf(u32) * 3);
buffer.appendSliceAssumeCapacity(buf[0..]);
mem.writeIntBig(u32, &buf, 0);
buffer.appendSliceAssumeCapacity(buf[0..]);
// const signature_blob = macho.GenericBlob{
// .magic = macho.CSSLOT_SIGNATURESLOT,
// .length = 0,
// };
mem.writeIntBig(u32, &buf, macho.CSMAGIC_BLOBWRAPPER);
buffer.appendSliceAssumeCapacity(buf[0..]);
mem.writeIntBig(u32, &buf, @sizeOf(u32) * 2);
buffer.appendSliceAssumeCapacity(buf[0..]);
try self.base.file.?.pwriteAll(buffer.items[0..], code_sig_cmd.dataoff);
try self.base.file.?.pwriteAll(&[_]u8{ 0 }, code_sig_cmd.dataoff + code_sig_cmd.datasize - 1);
}