diff options
Diffstat (limited to 'libc/arch-mips/bionic/futex_mips.S')
| -rw-r--r-- | libc/arch-mips/bionic/futex_mips.S | 142 |
1 files changed, 142 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..2a953ca --- /dev/null +++ b/libc/arch-mips/bionic/futex_mips.S @@ -0,0 +1,142 @@ +/* + * 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 <asm/unistd.h> + +#define FUTEX_WAIT 0 +#define FUTEX_WAKE 1 + +/* + * __futex_wait(*ftx, val, *timespec) + * futex_syscall(*ftx, op, val, *timespec, *addr2, val3) + */ + .type __futex_wait, @function + .global __futex_wait + .align 4 + .ent __futex_wait +__futex_wait: + subu $sp,4*6 + sw $0,20($sp) /* val3 */ + sw $0,16($sp) /* addr2 */ + move $a3,$a2 /* timespec */ + move $a2,$a1 /* val */ + li $a1,FUTEX_WAIT /* 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_wait + +/* + * int __futex_wake(volatile void *ftx, int count) + * int futex_syscall(*ftx, op, val, *timespec, *addr2, val3) + */ + .type __futex_wake, @function + .globl __futex_wake + .align 4 + .ent __futex_wake +__futex_wake: + subu $sp,4*6 + sw $0,20($sp) /* val3 */ + sw $0,16($sp) /* addr2 */ + move $a3,$0 /* timespec */ + move $a2,$a1 /* val */ + li $a1,FUTEX_WAKE /* 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_wake + +/* __futex_syscall3(*ftx, op, val) + * futex_syscall(*ftx, op, val, *timespec, *addr2, val3) + */ + .type __futex_syscall3, @function + .global __futex_syscall3 + .align 4 + .ent __futex_syscall3 +__futex_syscall3: + subu $sp,4*6 + sw $0,20($sp) /* val3 */ + sw $0,16($sp) /* addr2 */ + move $a3,$0 /* 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_syscall3 + +/* __futex_syscall4(*ftx, op, val) + * futex_syscall(*ftx, op, val, *timespec, *addr2, val3) + */ + .type __futex_syscall4, @function + .global __futex_syscall4 + .align 4 + .ent __futex_syscall4 +__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 |