| Shin-ichiro KAWASAKI | 1009327 | 2009-09-28 16:11:39 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 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 | #include <sys/linux-syscalls.h> |
| 29 | |
| 30 | .text |
| 31 | .type syscall, @function |
| 32 | .globl syscall |
| 33 | .align 4 |
| 34 | |
| 35 | /* |
| 36 | * Current implementation assumes that the all syscall |
| 37 | * has maximum 7 arguments. |
| 38 | */ |
| 39 | syscall: |
| 40 | /* get args */ |
| 41 | mov r4, r3 /* system call number */ |
| 42 | mov r5, r4 |
| 43 | mov r6, r5 |
| 44 | mov r7, r6 |
| 45 | mov.l @r15, r7 |
| 46 | mov.l @(4, r15), r0 |
| 47 | mov.l @(8, r15), r1 |
| 48 | mov.l @(12, r15), r2 |
| 49 | |
| 50 | /* invoke trap */ |
| 51 | trapa #(7 + 0x10) /* assuming 7 arguments */ |
| 52 | |
| 53 | /* check return value */ |
| 54 | cmp/pz r0 |
| 55 | bt end |
| 56 | |
| 57 | /* keep error number */ |
| 58 | mov.l r0, @-r15 |
| 59 | mov.l 0f, r1 |
| 60 | jsr @r1 |
| 61 | mov r0, r4 |
| 62 | mov.l @r15+, r0 |
| 63 | |
| 64 | end: |
| 65 | rts |
| 66 | nop |
| 67 | |
| 68 | .align 2 |
| 69 | 0: .long __set_errno |