| Elliott Hughes | ebc19a9 | 2022-10-14 23:25:36 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2020 The Android Open Source Project |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * * Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * * Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in |
| 12 | * the documentation and/or other materials provided with the |
| 13 | * distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 16 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 17 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 18 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 19 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 21 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 22 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 23 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 24 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 25 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 26 | * SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include <private/bionic_asm.h> |
| 30 | |
| 31 | ENTRY(syscall) |
| 32 | // Move the syscall number up. |
| 33 | mv a7, a0 |
| 34 | |
| 35 | // Shuffle the arguments down. |
| 36 | mv a0, a1 |
| 37 | mv a1, a2 |
| 38 | mv a2, a3 |
| 39 | mv a3, a4 |
| 40 | mv a4, a5 |
| 41 | mv a5, a6 |
| 42 | |
| 43 | ecall |
| 44 | |
| 45 | // Did it fail? |
| 46 | li a7, -MAX_ERRNO |
| 47 | bgtu a0, a7, 1f |
| 48 | |
| 49 | ret |
| 50 | 1: |
| 51 | neg a0, a0 |
| Elliott Hughes | b0d3f0b | 2023-03-08 18:19:50 +0000 | [diff] [blame] | 52 | tail __set_errno_internal |
| Elliott Hughes | ebc19a9 | 2022-10-14 23:25:36 +0000 | [diff] [blame] | 53 | END(syscall) |