From 2d303b6121e318e30572dd1134ddb0cf12bd0776 Mon Sep 17 00:00:00 2001 From: iximeow Date: Sat, 16 Dec 2023 14:47:02 -0800 Subject: fix incorrect register selection for `vpmovm2*` with `rex.b` set --- test/protected_mode/mod.rs | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'test/protected_mode') diff --git a/test/protected_mode/mod.rs b/test/protected_mode/mod.rs index 752c9df..e843c7a 100644 --- a/test/protected_mode/mod.rs +++ b/test/protected_mode/mod.rs @@ -1332,6 +1332,11 @@ fn test_misc() { #[test] fn evex() { + // vpmovm2b (and larger forms). for some reason the source operand is a mask register but uses + // modrm bits as a register selector. out-of-range `k` seem to just get masked down.. + test_display(&[0x62, 0xd2, 0x7e, 0x08, 0x28, 0xc2], "vpmovm2b xmm0, k2"); + test_display(&[0x62, 0xf2, 0x7e, 0x08, 0x28, 0xc1], "vpmovm2b xmm0, k1"); + test_display(&[0x62, 0xf2, 0x7d, 0x48, 0x2a, 0x44, 0x40, 0x01], "vmovntdqa zmm0, zmmword [eax + eax * 2 + 0x40]"); test_display(&[0x62, 0xf2, 0x7d, 0x08, 0x2a, 0x44, 0x40, 0x01], "vmovntdqa xmm0, xmmword [eax + eax * 2 + 0x10]"); } -- cgit v1.1