diff options
Diffstat (limited to 'tools/testing/selftests/kvm/lib/s390x/processor.c')
| -rw-r--r-- | tools/testing/selftests/kvm/lib/s390x/processor.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/lib/s390x/processor.c b/tools/testing/selftests/kvm/lib/s390x/processor.c index 32a02360b1eb..a0b84235c848 100644 --- a/tools/testing/selftests/kvm/lib/s390x/processor.c +++ b/tools/testing/selftests/kvm/lib/s390x/processor.c @@ -269,6 +269,42 @@ void vm_vcpu_add_default(struct kvm_vm *vm, uint32_t vcpuid, void *guest_code) run->psw_addr = (uintptr_t)guest_code; } +/* VM VCPU Args Set + * + * Input Args: + * vm - Virtual Machine + * vcpuid - VCPU ID + * num - number of arguments + * ... - arguments, each of type uint64_t + * + * Output Args: None + * + * Return: None + * + * Sets the first num function input arguments to the values + * given as variable args. Each of the variable args is expected to + * be of type uint64_t. The registers set by this function are r2-r6. + */ +void vcpu_args_set(struct kvm_vm *vm, uint32_t vcpuid, unsigned int num, ...) +{ + va_list ap; + struct kvm_regs regs; + int i; + + TEST_ASSERT(num >= 1 && num <= 5, "Unsupported number of args,\n" + " num: %u\n", + num); + + va_start(ap, num); + vcpu_regs_get(vm, vcpuid, ®s); + + for (i = 0; i < num; i++) + regs.gprs[i + 2] = va_arg(ap, uint64_t); + + vcpu_regs_set(vm, vcpuid, ®s); + va_end(ap); +} + void vcpu_dump(FILE *stream, struct kvm_vm *vm, uint32_t vcpuid, uint8_t indent) { struct vcpu *vcpu = vm->vcpu_head; |