On 08/22/2010 03:18 PM, Avi Kivity wrote:
Signed-off-by: Avi Kivity<avi@xxxxxxxxxx>
---
arch/x86/kvm/emulate.c | 37 ++++++++++++++++++++++++++++++++++++-
1 files changed, 36 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index f6f93b9..4cbc884 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2176,6 +2176,40 @@ static int em_push(struct x86_emulate_ctxt *ctxt)
return X86EMUL_CONTINUE;
}
+static int em_das(struct x86_emulate_ctxt *ctxt)
+{
+ struct decode_cache *c =&ctxt->decode;
+ u8 al, old_al;
+ bool af, cf, old_cf;
+
+ cf = ctxt->eflags& X86_EFLAGS_CF;
+ al = c->dst.val;
+
+ old_al = al;
+ old_cf = cf;
+ cf = false;
+ af = ctxt->eflags& X86_EFLAGS_AF;
+ if ((al& 0x0f)> 9 || af) {
+ al -= 6;
+ cf = old_cf | (al>= 250);
+ af = true;
+ } else {
+ af = false;
+ }
+ if (old_al> 0x99 || old_cf) {
+ al -= 0x60;
+ cf = true;
+ }
+
+ c->dst.val = al;
+ ctxt->eflags&= ~(X86_EFLAGS_AF | X86_EFLAGS_CF);
+ if (cf)
+ ctxt->eflags |= X86_EFLAGS_CF;
+ if (af)
+ ctxt->eflags |= X86_EFLAGS_AF;
+ return X86EMUL_CONTINUE;
+}
+
Missing the following hunk:
}
c->dst.val = al;
+ /* Set PF, ZF, SF */
+ c->src.type = OP_IMM;
+ c->src.val = 0;
+ c->src.bytes = 1;
+ emulate_2op_SrcV("or", c->src, c->dst, ctxt->eflags);
ctxt->eflags &= ~(X86_EFLAGS_AF | X86_EFLAGS_CF);
if (cf)
ctxt->eflags |= X86_EFLAGS_CF;
--
error compiling committee.c: too many arguments to function
--
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