From 9bf8ea42fe22d7d1c48044148fa658cb9083d49c Mon Sep 17 00:00:00 2001 From: Guillaume Thouvenin Date: Thu, 4 Dec 2008 14:30:13 +0100 Subject: [PATCH] KVM: x86 emulator: add the emulation of shld and shrd instructions Add emulation of shld and shrd instructions Signed-off-by: Guillaume Thouvenin Signed-off-by: Avi Kivity --- arch/x86/kvm/x86_emulate.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/x86_emulate.c b/arch/x86/kvm/x86_emulate.c index 9ae6d5b3e96..219dc3110bf 100644 --- a/arch/x86/kvm/x86_emulate.c +++ b/arch/x86/kvm/x86_emulate.c @@ -237,9 +237,14 @@ static u32 twobyte_table[256] = { /* 0x90 - 0x9F */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xA0 - 0xA7 */ - 0, 0, 0, DstMem | SrcReg | ModRM | BitOp, 0, 0, 0, 0, + 0, 0, 0, DstMem | SrcReg | ModRM | BitOp, + DstMem | SrcReg | Src2ImmByte | ModRM, + DstMem | SrcReg | Src2CL | ModRM, 0, 0, /* 0xA8 - 0xAF */ - 0, 0, 0, DstMem | SrcReg | ModRM | BitOp, 0, 0, ModRM, 0, + 0, 0, 0, DstMem | SrcReg | ModRM | BitOp, + DstMem | SrcReg | Src2ImmByte | ModRM, + DstMem | SrcReg | Src2CL | ModRM, + ModRM, 0, /* 0xB0 - 0xB7 */ ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM, 0, DstMem | SrcReg | ModRM | BitOp, @@ -2037,12 +2042,20 @@ twobyte_insn: c->src.val &= (c->dst.bytes << 3) - 1; emulate_2op_SrcV_nobyte("bt", c->src, c->dst, ctxt->eflags); break; + case 0xa4: /* shld imm8, r, r/m */ + case 0xa5: /* shld cl, r, r/m */ + emulate_2op_cl("shld", c->src2, c->src, c->dst, ctxt->eflags); + 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 */ + case 0xad: /* shrd cl, r, r/m */ + emulate_2op_cl("shrd", c->src2, c->src, c->dst, ctxt->eflags); + break; case 0xae: /* clflush */ break; case 0xb0 ... 0xb1: /* cmpxchg */ -- 2.46.0