| // Copyright 2021 The Fuchsia Authors |
| // |
| // Use of this source code is governed by a MIT-style |
| // license that can be found in the LICENSE file or at |
| // https://opensource.org/licenses/MIT |
| |
| #include <lib/arch/asm.h> |
| #include "test.h" |
| |
| .text |
| |
| // uint64_t multiply_by_ten(uint64_t x). |
| .function multiply_by_ten, global |
| #if defined(__aarch64__) |
| add x0, x0, x0, lsl #2 |
| lsl x0, x0, #1 |
| #elif defined(__x86_64__) |
| add %rdi, %rdi |
| lea (%rdi, %rdi, 4), %rax |
| #elif defined(__riscv) |
| sll a1, a0, 2 |
| add a1, a1, a0 |
| sll a0, a1, 1 |
| #else |
| .error "unknown architecture" |
| #endif |
| ret |
| .if (. - multiply_by_ten) != PATCH_SIZE_MULTIPLY_BY_FACTOR |
| .error "PATCH_SIZE_MULTIPLY_BY_FACTOR doesn't match the code" |
| .endif |
| .end_function |
