diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux/sh/sem_wait.S')
| -rw-r--r-- | libpthread/nptl/sysdeps/unix/sysv/linux/sh/sem_wait.S | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/sem_wait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/sh/sem_wait.S new file mode 100644 index 000000000..c12e5ab45 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/sh/sem_wait.S @@ -0,0 +1,166 @@ +/* Copyright (C) 2003, 2004 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 <pthread-errnos.h> +#include <tcb-offsets.h> +#include "lowlevel-atomic.h" + + +#define SYS_gettimeofday __NR_gettimeofday +#define FUTEX_WAIT 0 +#define FUTEX_WAKE 1 + + .text + + .globl __new_sem_wait + .type __new_sem_wait,@function + .align 5 + cfi_startproc +__new_sem_wait: + /* First check for cancellation. */ + stc gbr, r0 + mov.w .Lchand, r1 + mov.l @(r0,r1), r0 + mov #0xf9, r1 + and r1, r0 + cmp/eq #8, r0 + bt 5f + + mov.l r8, @-r15 + cfi_adjust_cfa_offset(4) + cfi_rel_offset (r8, 0) + mov.l r10, @-r15 + cfi_adjust_cfa_offset(4) + cfi_rel_offset (r10, 0) + mov.l r12, @-r15 + cfi_adjust_cfa_offset(4) + cfi_rel_offset (r12, 0) + sts.l pr, @-r15 + cfi_adjust_cfa_offset(4) + cfi_rel_offset (pr, 0) + 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/s 2b + mov r2, r0 + bra 9f + mov #0, r0 + +1: + mov.l .Lenable0, r1 + bsrf r1 + nop +.Lenable0b: + mov r0, r10 + + 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 + + mov.l .Ldisable0, r1 + mov r10, r4 + bsrf r1 + mov r0, r10 +.Ldisable0b: + mov r10, r0 + + 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 + bra .Lexit + add r1, r0 + .align 2 +.Lerrno0: + .long errno@GOTTPOFF +.Lexit: +#else + mov.l .Lerrloc0, r1 + bsrf r1 + nop +.Lerrloc0b: +#endif + mov.l r8, @r0 + mov #-1, r0 +9: + lds.l @r15+, pr + mov.l @r15+, r12 + mov.l @r15+, r10 + rts + mov.l @r15+, r8 +5: + /* Canceled. */ + stc gbr, r0 + mov.w .Lresult, r1 + mov #-1, r2 + mov.l r2, @(r0,r1) + mov.w .Lchand, r0 + or.b #0x10, @(r0,gbr) + stc gbr, r0 + mov.w .Lclbuf, r1 + mov.l .Lunwind, r2 + braf r2 + mov.l @(r0,r1), r4 +.Lunwindb: + cfi_endproc + +.Lchand: + .word CANCELHANDLING - TLS_PRE_TCB_SIZE +.Lresult: + .word RESULT - TLS_PRE_TCB_SIZE +.Lclbuf: + .word CLEANUP_JMP_BUF - TLS_PRE_TCB_SIZE + .align 2 +.Lgot0: + .long _GLOBAL_OFFSET_TABLE_ +#if !USE___THREAD +.Lerrloc0: + .long __errno_location@PLT-(.Lerrloc0b-.) +#endif +.Lenable0: + .long __pthread_enable_asynccancel-.Lenable0b +.Ldisable0: + .long __pthread_disable_asynccancel-.Ldisable0b +.Lunwind: + .long HIDDEN_JUMPTARGET (__pthread_unwind)-.Lunwindb + .size __new_sem_wait,.-__new_sem_wait + weak_alias(__new_sem_wait, sem_wait) |