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BR 3392676: fix cmpxchg8b/16b with explicit size

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CMPXCHG8b/16b should be legitimate with an explicit operand size.

Reported-by: Xusheng Li <xushengli@protonmail.com>
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
This commit is contained in:
H. Peter Anvin (Intel) 2020-06-04 20:22:34 -07:00
parent 773b87fff6
commit 152cbd37e2
1 changed files with 2 additions and 2 deletions
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x86/insns.dat
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@ -344,8 +344,8 @@ CMPXCHG486 mem,reg16 [mr: o16 0f a7 /r] 486,SM,UNDOC,ND,LOCK,OBSOLETE
CMPXCHG486 reg16,reg16 [mr: o16 0f a7 /r] 486,UNDOC,ND,OBSOLETE
CMPXCHG486 mem,reg32 [mr: o32 0f a7 /r] 486,SM,UNDOC,ND,LOCK,OBSOLETE
CMPXCHG486 reg32,reg32 [mr: o32 0f a7 /r] 486,UNDOC,ND,OBSOLETE
CMPXCHG8B mem [m: hle norexw 0f c7 /1] PENT,LOCK
CMPXCHG16B mem [m: o64 0f c7 /1] X64,LOCK
CMPXCHG8B mem64 [m: hle norexw 0f c7 /1] PENT,LOCK
CMPXCHG16B mem128 [m: o64 0f c7 /1] X64,LOCK
CPUID void [ 0f a2] PENT
CPU_READ void [ 0f 3d] PENT,CYRIX
CPU_WRITE void [ 0f 3c] PENT,CYRIX