static int
vmexit_inout(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu)
{
int error;
int bytes, port, in, out, string;
int vcpu;
vcpu = *pvcpu;
port = vme->u.inout.port;
bytes = vme->u.inout.bytes;
string = vme->u.inout.string;
in = vme->u.inout.in;
out = !in;
/* Extra-special case of host notifications */
if (out && port == GUEST_NIO_PORT) {
error = vmexit_handle_notify(ctx, vme, pvcpu, vme->u.inout.eax);
return (error);
}
error = emulate_inout(ctx, vcpu, vme, strictio);
if (error) {
fprintf(stderr, "Unhandled %s%c 0x%04x at 0x%lx\n",
in ? "in" : "out",
bytes == 1 ? 'b' : (bytes == 2 ? 'w' : 'l'),
port, vmexit->rip);
return (VMEXIT_ABORT);
} else {
return (VMEXIT_CONTINUE);
}
}
static int
vmexit_inout(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu)
{
int error;
int bytes, port, in, out;
uint32_t eax;
int vcpu;
vcpu = *pvcpu;
port = vme->u.inout.port;
bytes = vme->u.inout.bytes;
eax = vme->u.inout.eax;
in = vme->u.inout.in;
out = !in;
/* We don't deal with these */
if (vme->u.inout.string || vme->u.inout.rep)
return (VMEXIT_ABORT);
/* Special case of guest reset */
if (out && port == 0x64 && (uint8_t)eax == 0xFE)
return (vmexit_catch_reset());
/* Extra-special case of host notifications */
if (out && port == GUEST_NIO_PORT)
return (vmexit_handle_notify(ctx, vme, pvcpu, eax));
error = emulate_inout(ctx, vcpu, in, port, bytes, &eax, strictio);
if (error == INOUT_OK && in)
error = vm_set_register(ctx, vcpu, VM_REG_GUEST_RAX, eax);
switch (error) {
case INOUT_OK:
return (VMEXIT_CONTINUE);
case INOUT_RESET:
return (VMEXIT_RESET);
case INOUT_POWEROFF:
return (VMEXIT_POWEROFF);
default:
fprintf(stderr, "Unhandled %s%c 0x%04x\n",
in ? "in" : "out",
bytes == 1 ? 'b' : (bytes == 2 ? 'w' : 'l'), port);
return (vmexit_catch_inout());
}
}
static void
vmexit_inout(struct vmctx *ctx, struct vhm_request *vhm_req, int *pvcpu)
{
int error;
int bytes, port, in;
port = vhm_req->reqs.pio_request.address;
bytes = vhm_req->reqs.pio_request.size;
in = (vhm_req->reqs.pio_request.direction == REQUEST_READ);
error = emulate_inout(ctx, pvcpu, &vhm_req->reqs.pio_request);
if (error) {
fprintf(stderr, "Unhandled %s%c 0x%04x\n",
in ? "in" : "out",
bytes == 1 ? 'b' : (bytes == 2 ? 'w' : 'l'),
port);
if (in) {
vhm_req->reqs.pio_request.value = VHM_REQ_PIO_INVAL;
}
}
}
