From 2d303b6121e318e30572dd1134ddb0cf12bd0776 Mon Sep 17 00:00:00 2001
From: iximeow <me@iximeow.net>
Date: Sat, 16 Dec 2023 14:47:02 -0800
Subject: fix incorrect register selection for `vpmovm2*` with `rex.b` set

---
 src/shared/evex.in | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/shared')

diff --git a/src/shared/evex.in b/src/shared/evex.in
index efeec20..837b867 100644
--- a/src/shared/evex.in
+++ b/src/shared/evex.in
@@ -2842,6 +2842,8 @@ pub(crate) fn read_evex_operands<
       if mem_oper == OperandSpec::RegMMM {
         instruction.mem_size = 0;
         instruction.regs[1].bank = RegisterBank::K;
+        // only 8 mask registers, `xed` suggests that any invalid bits are masked out???
+        instruction.regs[1].num &= 0b111;
       } else {
         return Err(DecodeError::InvalidOperand);
       }
-- 
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