diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sh/sem_trywait.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sh/sem_trywait.S | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/sh/sem_trywait.S b/sysdeps/unix/sysv/linux/sh/sem_trywait.S new file mode 100644 index 0000000000..8ff8792ff4 --- /dev/null +++ b/sysdeps/unix/sysv/linux/sh/sem_trywait.S @@ -0,0 +1,102 @@ +/* Copyright (C) 2003-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <shlib-compat.h> +#include <pthread-errnos.h> +#include <lowlevellock.h> +#include "lowlevel-atomic.h" + + + .text + + .globl __new_sem_trywait + .type __new_sem_trywait,@function + .align 5 + cfi_startproc +__new_sem_trywait: + mov.l r12, @-r15 + cfi_adjust_cfa_offset (4) + cfi_rel_offset (r12, 0) + mov.l r8, @-r15 + cfi_adjust_cfa_offset (4) + cfi_rel_offset (r8, 0) + sts.l pr, @-r15 + cfi_adjust_cfa_offset (4) + cfi_rel_offset (pr, 0) + mov r4, r8 + mov.l @r8, r0 +2: + tst r0, r0 + bt 1f + + mov r0, r3 + mov r0, r4 + add #-1, r3 + CMPXCHG (r4, @r8, r3, r2) + bf/s 2b + mov r2, r0 + + cfi_remember_state + lds.l @r15+, pr + cfi_adjust_cfa_offset (-4) + cfi_restore (pr) + mov.l @r15+, r8 + cfi_adjust_cfa_offset (-4) + cfi_restore (r8) + mov.l @r15+, r12 + cfi_adjust_cfa_offset (-4) + cfi_restore (r12) + rts + mov #0, r0 + cfi_restore_state + +1: + mov #EAGAIN, r8 + mova .Lgot1, r0 + mov.l .Lgot1, r12 + add r0, r12 + + mov.l .Lerrno1, r0 + stc gbr, r1 + mov.l @(r0, r12), r0 + bra .Lexit + add r1, r0 + .align 2 +.Lerrno1: + .long errno@GOTTPOFF +.Lexit: + mov.l r8, @r0 + lds.l @r15+, pr + cfi_adjust_cfa_offset (-4) + cfi_restore (pr) + mov.l @r15+, r8 + cfi_adjust_cfa_offset (-4) + cfi_restore (r8) + mov.l @r15+, r12 + cfi_adjust_cfa_offset (-4) + cfi_restore (r12) + rts + mov #-1, r0 + + cfi_endproc + + .align 2 +.Lgot1: + .long _GLOBAL_OFFSET_TABLE_ + .size __new_sem_trywait,.-__new_sem_trywait + versioned_symbol(libpthread, __new_sem_trywait, sem_trywait, GLIBC_2_1) |