| /* |
| * Copyright 2019 The Hafnium Authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * https://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "hf/call.h" |
| #include "hf/types.h" |
| |
| int64_t hf_call(uint64_t arg0, uint64_t arg1, uint64_t arg2, uint64_t arg3) |
| { |
| register uint64_t r0 __asm__("x0") = arg0; |
| register uint64_t r1 __asm__("x1") = arg1; |
| register uint64_t r2 __asm__("x2") = arg2; |
| register uint64_t r3 __asm__("x3") = arg3; |
| |
| __asm__ volatile( |
| "hvc #0" |
| : /* Output registers, also used as inputs ('+' constraint). */ |
| "+r"(r0), "+r"(r1), "+r"(r2), "+r"(r3)); |
| |
| return r0; |
| } |