2 * Support for virtio hypercalls on s390
4 * Copyright 2012 IBM Corp.
7 * This work is licensed under the terms of the GNU GPL, version 2 or (at
8 * your option) any later version. See the COPYING file in the top-level
12 #include "qemu/osdep.h"
14 #include "hw/s390x/s390-virtio.h"
16 #define MAX_DIAG_SUBCODES 255
18 static s390_virtio_fn s390_diag500_table[MAX_DIAG_SUBCODES];
20 void s390_register_virtio_hypercall(uint64_t code, s390_virtio_fn fn)
22 assert(code < MAX_DIAG_SUBCODES);
23 assert(!s390_diag500_table[code]);
25 s390_diag500_table[code] = fn;
28 int s390_virtio_hypercall(CPUS390XState *env)
32 if (env->regs[1] < MAX_DIAG_SUBCODES) {
33 fn = s390_diag500_table[env->regs[1]];
35 env->regs[2] = fn(&env->regs[2]);