From 8d8f4e9f66ab36e4fcc75eca1e828af8466309f1 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Thu, 26 Aug 2010 11:56:06 +0300 Subject: [PATCH] KVM: x86 emulator: support byte/word opcode pairs Many x86 instructions come in byte and word variants distinguished with bit 0 of the opcode. Add macros to aid in defining them. Signed-off-by: Avi Kivity Signed-off-by: Marcelo Tosatti --- arch/x86/kvm/emulate.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 2b9b0feabdba..1a230b5495e0 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -2330,6 +2330,9 @@ static int em_rdtsc(struct x86_emulate_ctxt *ctxt) #define GD(_f, _g) { .flags = ((_f) | Group | GroupDual), .u.gdual = (_g) } #define I(_f, _e) { .flags = (_f), .u.execute = (_e) } +#define D2bv(_f) D((_f) | ByteOp), D(_f) +#define I2bv(_f, _e) I((_f) | ByteOp, _e), I(_f, _e) + static struct opcode group1[] = { X7(D(Lock)), N }; @@ -2572,6 +2575,9 @@ static struct opcode twobyte_table[256] = { #undef GD #undef I +#undef D2bv +#undef I2bv + static unsigned imm_size(struct decode_cache *c) { unsigned size; -- 2.11.4.GIT