From a7e6c88a78b7c3d67491bf90b2b95e66437dbdb6 Mon Sep 17 00:00:00 2001 From: Sheng Yang Date: Thu, 15 Nov 2007 14:52:28 +0800 Subject: [PATCH] KVM: x86 emulator: modify 'lods', and 'stos' not to depend on CR2 The current 'lods' and 'stos' is depending on incoming CR2 rather than decode memory address from registers. Signed-off-by: Sheng Yang Signed-off-by: Avi Kivity --- drivers/kvm/x86_emulate.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c index e6979475be..8e2162fc6f 100644 --- a/drivers/kvm/x86_emulate.c +++ b/drivers/kvm/x86_emulate.c @@ -1528,7 +1528,9 @@ special_insn: case 0xaa ... 0xab: /* stos */ c->dst.type = OP_MEM; c->dst.bytes = (c->d & ByteOp) ? 1 : c->op_bytes; - c->dst.ptr = (unsigned long *)cr2; + c->dst.ptr = (unsigned long *)register_address( + ctxt->es_base, + c->regs[VCPU_REGS_RDI]); c->dst.val = c->regs[VCPU_REGS_RAX]; register_address_increment(c->regs[VCPU_REGS_RDI], (ctxt->eflags & EFLG_DF) ? -c->dst.bytes @@ -1538,9 +1540,13 @@ special_insn: c->dst.type = OP_REG; c->dst.bytes = (c->d & ByteOp) ? 1 : c->op_bytes; c->dst.ptr = (unsigned long *)&c->regs[VCPU_REGS_RAX]; - if ((rc = ops->read_emulated(cr2, &c->dst.val, - c->dst.bytes, - ctxt->vcpu)) != 0) + if ((rc = ops->read_emulated(register_address( + c->override_base ? *c->override_base : + ctxt->ds_base, + c->regs[VCPU_REGS_RSI]), + &c->dst.val, + c->dst.bytes, + ctxt->vcpu)) != 0) goto done; register_address_increment(c->regs[VCPU_REGS_RSI], (ctxt->eflags & EFLG_DF) ? -c->dst.bytes -- 2.39.5