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| author | Jacob Young <jacobly0@users.noreply.github.com> | 2023-03-25 11:00:42 -0400 |
|---|---|---|
| committer | Jacob Young <jacobly0@users.noreply.github.com> | 2023-03-25 16:23:55 -0400 |
| commit | 6d9bdc8733419ebfc9527d114b637c57d3fd8a42 (patch) | |
| tree | 7a2ed1ad926b0507612563675adfed555a8471fd /src/arch | |
| parent | a2f6e068b0082692f2c5475c1e31290b9c016010 (diff) | |
| download | zig-6d9bdc8733419ebfc9527d114b637c57d3fd8a42.tar.gz zig-6d9bdc8733419ebfc9527d114b637c57d3fd8a42.zip | |
x86_64: fix cmpxchg
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/x86_64/CodeGen.zig | 2 | ||||
| -rw-r--r-- | src/arch/x86_64/encodings.zig | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/src/arch/x86_64/CodeGen.zig b/src/arch/x86_64/CodeGen.zig index 3c64f15ef1..c7326ef3b0 100644 --- a/src/arch/x86_64/CodeGen.zig +++ b/src/arch/x86_64/CodeGen.zig @@ -7242,7 +7242,7 @@ fn airCmpxchg(self: *Self, inst: Air.Inst.Index) !void { try self.spillEflagsIfOccupied(); _ = try self.addInst(.{ .tag = .cmpxchg, .ops = .lock_mr_sib, .data = .{ .rx = .{ - .r = new_reg, + .r = registerAlias(new_reg, val_abi_size), .payload = try self.addExtra(Mir.MemorySib.encode(ptr_mem)), } } }); diff --git a/src/arch/x86_64/encodings.zig b/src/arch/x86_64/encodings.zig index d0ded0136b..9683ef991a 100644 --- a/src/arch/x86_64/encodings.zig +++ b/src/arch/x86_64/encodings.zig @@ -257,8 +257,8 @@ pub const table = &[_]Entry{ .{ .cmpxchg, .mr, .rm8, .r8, .none, .none, &.{ 0x0f, 0xb0 }, 0, .none }, .{ .cmpxchg, .mr, .rm8, .r8, .none, .none, &.{ 0x0f, 0xb0 }, 0, .rex }, - .{ .cmpxchg, .mr, .rm16, .r16, .none, .none, &.{ 0x0f, 0xb1 }, 0, .rex }, - .{ .cmpxchg, .mr, .rm32, .r32, .none, .none, &.{ 0x0f, 0xb1 }, 0, .rex }, + .{ .cmpxchg, .mr, .rm16, .r16, .none, .none, &.{ 0x0f, 0xb1 }, 0, .none }, + .{ .cmpxchg, .mr, .rm32, .r32, .none, .none, &.{ 0x0f, 0xb1 }, 0, .none }, .{ .cmpxchg, .mr, .rm64, .r64, .none, .none, &.{ 0x0f, 0xb1 }, 0, .long }, .{ .cmpxchg8b , .m, .m64, .none, .none, .none, &.{ 0x0f, 0xc7 }, 1, .none }, |