| Raghu Gandham | 405b802 | 2012-07-25 18:16:42 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 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 | |
| KwongYuan Wong | b03bc56 | 2012-03-27 11:13:13 -0700 | [diff] [blame] | 29 | /* |
| 30 | * The MIPS pipe syscall returns results in two registers, which |
| 31 | * we have to copy into the supplied array. This prevents us from |
| 32 | * using an auto-generated stub. |
| 33 | */ |
| 34 | |
| Raghu Gandham | 405b802 | 2012-07-25 18:16:42 -0700 | [diff] [blame] | 35 | #include <asm/unistd.h> |
| 36 | |
| 37 | .text |
| 38 | |
| 39 | /* int pipe(int[]) */ |
| 40 | |
| 41 | .type pipe,@function |
| 42 | .global pipe |
| 43 | .align 4 |
| 44 | .ent pipe |
| 45 | pipe: |
| 46 | .set noreorder |
| KwongYuan Wong | b03bc56 | 2012-03-27 11:13:13 -0700 | [diff] [blame] | 47 | .cpload $t9 |
| Raghu Gandham | 405b802 | 2012-07-25 18:16:42 -0700 | [diff] [blame] | 48 | li $v0,__NR_pipe |
| 49 | syscall /* syscall returns results in v0,v1 */ |
| KwongYuan Wong | b03bc56 | 2012-03-27 11:13:13 -0700 | [diff] [blame] | 50 | bnez $a3, 1f /* check errno */ |
| 51 | nop |
| 52 | sw $v0, 0($a0) |
| 53 | sw $v1, 4($a0) |
| Raghu Gandham | 405b802 | 2012-07-25 18:16:42 -0700 | [diff] [blame] | 54 | j $ra |
| KwongYuan Wong | b03bc56 | 2012-03-27 11:13:13 -0700 | [diff] [blame] | 55 | move $v0, $zero |
| 56 | 1: |
| 57 | la $t9, __set_errno |
| 58 | j $t9 |
| 59 | move $a0, $v0 /* delay slot, prepare args for __set_errno */ |
| Raghu Gandham | 405b802 | 2012-07-25 18:16:42 -0700 | [diff] [blame] | 60 | .end pipe |