Mohammed Gamal wrote:
This patch adds instructions 'in' and 'out' to the x86 emulator.
+ SrcNone | ByteOp | ImplicitOps, SrcNone |ImplicitOps,
Missing blank.
case 0xe8: /* call (near) */ {
long int rel;
switch (c->op_bytes) {
@@ -1732,6 +1744,26 @@ special_insn:
jmp_rel(c, c->src.val);
c->dst.type = OP_NONE; /* Disable writeback. */
break;
+ case 0xec: /* in al,dx */
+ case 0xed: /* in (e/r)ax,dx */
+ port = c->regs[VCPU_REGS_RDX];
+ in: if(kvm_emulate_pio(ctxt->vcpu, NULL, 1,
missing blank.
+ (c->d & ByteOp) ? 1 : c->op_bytes,
+ port) != 0) {
+ c->eip = saved_eip;
+ return -1;
+ }
+ return 0;
+ case 0xee: /* out al,dx */
+ case 0xef: /* out (e/r)ax,dx */
+ port = c->regs[VCPU_REGS_RDX];
+ out: if(kvm_emulate_pio(ctxt->vcpu, NULL, 0,
+ (c->d & ByteOp) ? 1 : c->op_bytes,
+ port) != 0) {
+ c->eip = saved_eip;
+ return -1;
goto cannot_emulate?
+ }
+ return 0;
It would be simpler to fold the in and out implementations together (and
extract the direction flag from the instruction byte).
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