diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/sh/sem_wait.S')
-rw-r--r-- | nptl/sysdeps/unix/sysv/linux/sh/sem_wait.S | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/sh/sem_wait.S b/nptl/sysdeps/unix/sysv/linux/sh/sem_wait.S new file mode 100644 index 0000000000..c275f204db --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/sh/sem_wait.S @@ -0,0 +1,112 @@ +/* Copyright (C) 2003 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sysdep.h> +#include <shlib-compat.h> +#include "lowlevel-atomic.h" + + +#define SYS_gettimeofday __NR_gettimeofday +#define SYS_futex 240 +#define FUTEX_WAIT 0 +#define FUTEX_WAKE 1 + +#define EINTR 4 +#define EAGAIN 11 +#define EWOULDBLOCK EAGAIN +#define EINVAL 22 +#define ETIMEDOUT 110 + + .text + + .globl __new_sem_wait + .type __new_sem_wait,@function + .align 5 +__new_sem_wait: + mov.l r12, @-r15 + mov.l r8, @-r15 + sts.l pr, @-r15 + mov r4, r8 +3: + 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 2b + lds.l @r15+, pr + mov.l @r15+, r8 + mov.l @r15+, r12 + rts + mov #0, r0 + +1: + mov r8, r4 + mov #FUTEX_WAIT, r5 + mov #0, r6 + mov #0, r7 + mov #SYS_futex, r3 + extu.b r3, r3 + trapa #0x14 + SYSCALL_INST_PAD + + tst r0, r0 + bt 3b + cmp/eq #-EWOULDBLOCK, r0 + bt 3b + neg r0, r0 + + mov r0, r8 + mova .Lgot0, r0 + mov.l .Lgot0, r12 + add r0, r12 + +#if USE___THREAD + mov.l .Lerrno0, r0 + stc gbr, r1 + mov.l @(r0, r12), r0 + add r1, r0 + mov.l r8, @r0 +#else + mov.l .Lerrloc0, r1 + bsrf r1 + nop +.Lerrloc0b: + mov.l r8, @r0 +#endif + lds.l @r15+, pr + mov.l @r15+, r8 + mov.l @r15+, r12 + rts + mov #-1, r0 + + .align 2 +.Lgot0: + .long _GLOBAL_OFFSET_TABLE_ +#if USE___THREAD +.Lerrno0: + .long errno@GOTTPOFF +#else +.Lerrloc0: + .long __errno_location@PLT-(.Lerrloc0b+2-.) +#endif + .size __new_sem_wait,.-__new_sem_wait + .symver __new_sem_wait, sem_wait@@GLIBC_2.2 |