| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #include <private/bionic_asm.h> |
| |
| // int __futex_syscall4(volatile void* ftx, int op, int val, const struct timespec* timeout) |
| ENTRY_PRIVATE(__futex_syscall4) |
| subu sp,4*6 |
| sw $0,20(sp) /* val3 */ |
| sw $0,16(sp) /* addr2 */ |
| # move a3,a3 /* timespec */ |
| # move a2,a2 /* val */ |
| # li a1,a1 /* op */ |
| # move a0,a0 /* ftx */ |
| li v0,__NR_futex |
| syscall |
| .set noreorder |
| bnez a3, 1f /* Check for error */ |
| neg v0 /* Negate error number if it's valid */ |
| move v0,$0 /* Otherwise return 0 */ |
| 1: |
| .set reorder |
| addu sp,4*6 |
| j ra |
| END(__futex_syscall4) |
