From: Wei Yongjun <[email protected]> Mask group 8 instruction as BitOp, so we can share the code for adjust the source operand.
Signed-off-by: Wei Yongjun <[email protected]> Reviewed-by: Paolo Bonzini <[email protected]> Signed-off-by: Avi Kivity <[email protected]> diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 8c361c1..d344ed3 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -737,6 +737,9 @@ static void fetch_bit_operand(struct decode_cache *c) c->dst.addr.mem += (sv >> 3); } + + /* only subword offset */ + c->src.val &= (c->dst.bytes << 3) - 1; } static int read_emulated(struct x86_emulate_ctxt *ctxt, @@ -2337,7 +2340,7 @@ static struct opcode twobyte_table[256] = { D(DstReg | SrcMem16 | ModRM | Mov), /* 0xB8 - 0xBF */ N, N, - G(0, group8), D(DstMem | SrcReg | ModRM | BitOp | Lock), + G(BitOp, group8), D(DstMem | SrcReg | ModRM | BitOp | Lock), N, N, D(ByteOp | DstReg | SrcMem | ModRM | Mov), D(DstReg | SrcMem16 | ModRM | Mov), /* 0xC0 - 0xCF */ @@ -3420,8 +3423,6 @@ twobyte_insn: break; case 0xab: bts: /* bts */ - /* only subword offset */ - c->src.val &= (c->dst.bytes << 3) - 1; emulate_2op_SrcV_nobyte("bts", c->src, c->dst, ctxt->eflags); break; case 0xac: /* shrd imm8, r, r/m */ @@ -3449,8 +3450,6 @@ twobyte_insn: break; case 0xb3: btr: /* btr */ - /* only subword offset */ - c->src.val &= (c->dst.bytes << 3) - 1; emulate_2op_SrcV_nobyte("btr", c->src, c->dst, ctxt->eflags); break; case 0xb6 ... 0xb7: /* movzx */ @@ -3472,8 +3471,6 @@ twobyte_insn: break; case 0xbb: btc: /* btc */ - /* only subword offset */ - c->src.val &= (c->dst.bytes << 3) - 1; emulate_2op_SrcV_nobyte("btc", c->src, c->dst, ctxt->eflags); break; case 0xbe ... 0xbf: /* movsx */ -- To unsubscribe from this list: send the line "unsubscribe kvm-commits" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
