From 50365b0c900dc6d6f34395c6607b07f58aac3d70 Mon Sep 17 00:00:00 2001 From: Nitin A Kamble Date: Tue, 30 Oct 2007 19:43:07 -0800 Subject: [PATCH] Implement emulation of instructions stc (opcode 0xf9) cld (opcode 0xfc) Signed-off-by: Nitin A Kamble --- drivers/kvm/x86_emulate.c | 13 +++++++++++-- 1 files changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c index 1357355..21f3831 100644 --- a/drivers/kvm/x86_emulate.c +++ b/drivers/kvm/x86_emulate.c @@ -173,8 +173,9 @@ static u16 opcode_table[256] = { ImplicitOps, ImplicitOps, ByteOp | DstMem | SrcNone | ModRM, DstMem | SrcNone | ModRM, /* 0xF8 - 0xFF */ - ImplicitOps, 0, ImplicitOps, ImplicitOps, - 0, 0, ByteOp | DstMem | SrcNone | ModRM, DstMem | SrcNone | ModRM + ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps, + ImplicitOps, 0, + ByteOp | DstMem | SrcNone | ModRM, DstMem | SrcNone | ModRM }; static u16 twobyte_table[256] = { @@ -1606,6 +1607,10 @@ special_insn: ctxt->eflags &= ~EFLG_CF; c->dst.type = OP_NONE; /* Disable writeback. */ break; + case 0xf9: /* stc */ + ctxt->eflags |= EFLG_CF; + c->dst.type = OP_NONE; /* Disable writeback. */ + break; case 0xfa: /* cli */ ctxt->eflags &= ~X86_EFLAGS_IF; c->dst.type = OP_NONE; /* Disable writeback. */ @@ -1614,6 +1619,10 @@ special_insn: ctxt->eflags |= X86_EFLAGS_IF; c->dst.type = OP_NONE; /* Disable writeback. */ break; + case 0xfc: /* cld */ + ctxt->eflags |= X86_EFLAGS_DF; + c->dst.type = OP_NONE; /* Disable writeback. */ + break; } if (c->rep_prefix) { if (c->regs[VCPU_REGS_RCX] == 0) { -- 1.5.2.2