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KVM: x86 emulator: Extract 'pop' sequence into a function 

Switch 'pop r/m' instruction to use the new function.

Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity 2008-11-27 17:36:41 +02:00
parent b82091824e
commit faa5a3ae39
1 changed files with 17 additions and 4 deletions
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21
arch/x86/kvm/x86_emulate.c
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@ -1057,20 +1057,33 @@ static inline void emulate_push(struct x86_emulate_ctxt *ctxt)
c->regs[VCPU_REGS_RSP]);
}
static inline int emulate_grp1a(struct x86_emulate_ctxt *ctxt,
struct x86_emulate_ops *ops)
static int emulate_pop(struct x86_emulate_ctxt *ctxt,
struct x86_emulate_ops *ops)
{
struct decode_cache *c = &ctxt->decode;
int rc;
rc = ops->read_std(register_address(c, ss_base(ctxt),
c->regs[VCPU_REGS_RSP]),
&c->dst.val, c->dst.bytes, ctxt->vcpu);
&c->src.val, c->src.bytes, ctxt->vcpu);
if (rc != 0)
return rc;
register_address_increment(c, &c->regs[VCPU_REGS_RSP], c->dst.bytes);
register_address_increment(c, &c->regs[VCPU_REGS_RSP], c->src.bytes);
return rc;
}
static inline int emulate_grp1a(struct x86_emulate_ctxt *ctxt,
struct x86_emulate_ops *ops)
{
struct decode_cache *c = &ctxt->decode;
int rc;
c->src.bytes = c->dst.bytes;
rc = emulate_pop(ctxt, ops);
if (rc != 0)
return rc;
c->dst.val = c->src.val;
return 0;
}