diff options
Diffstat (limited to 'libc/arch-mips/bionic/futex_mips.S')
| -rw-r--r-- | libc/arch-mips/bionic/futex_mips.S | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/libc/arch-mips/bionic/futex_mips.S b/libc/arch-mips/bionic/futex_mips.S new file mode 100644 index 0000000..5a09f32 --- /dev/null +++ b/libc/arch-mips/bionic/futex_mips.S @@ -0,0 +1,50 @@ +/* + * 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) |