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d3d355272a
2004-06-29 Kaz Kojima <kkojima@rr.iij4u.or.jp> * sysdeps/unix/sysv/linux/sh/sysdep.h (SYSCALL_ERROR_HANDLER): Fix branch offset for a PLT entry.
168 lines
3.2 KiB
ArmAsm
168 lines
3.2 KiB
ArmAsm
/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <shlib-compat.h>
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#include <pthread-errnos.h>
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#include <tcb-offsets.h>
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#include "lowlevel-atomic.h"
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#define SYS_gettimeofday __NR_gettimeofday
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#define SYS_futex 240
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#define FUTEX_WAIT 0
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#define FUTEX_WAKE 1
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.text
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.globl __new_sem_wait
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.type __new_sem_wait,@function
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.align 5
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cfi_startproc
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__new_sem_wait:
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/* First check for cancellation. */
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stc gbr, r0
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mov.w .Lchand, r1
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mov.l @(r0,r1), r0
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mov #0xf9, r1
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and r1, r0
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cmp/eq #8, r0
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bt 5f
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mov.l r8, @-r15
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cfi_adjust_cfa_offset(4)
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cfi_rel_offset (r8, 0)
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mov.l r10, @-r15
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cfi_adjust_cfa_offset(4)
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cfi_rel_offset (r10, 0)
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mov.l r12, @-r15
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cfi_adjust_cfa_offset(4)
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cfi_rel_offset (r12, 0)
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sts.l pr, @-r15
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cfi_adjust_cfa_offset(4)
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cfi_rel_offset (pr, 0)
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mov r4, r8
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3:
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mov.l @r8, r0
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2:
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tst r0, r0
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bt 1f
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mov r0, r3
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mov r0, r4
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add #-1, r3
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CMPXCHG (r4, @r8, r3, r2)
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bf/s 2b
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mov r2, r0
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bra 9f
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mov #0, r0
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1:
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mov.l .Lenable0, r1
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bsrf r1
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nop
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.Lenable0b:
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mov r0, r10
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mov r8, r4
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mov #FUTEX_WAIT, r5
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mov #0, r6
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mov #0, r7
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mov #SYS_futex, r3
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extu.b r3, r3
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trapa #0x14
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SYSCALL_INST_PAD
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mov.l .Ldisable0, r1
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mov r10, r4
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bsrf r1
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mov r0, r10
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.Ldisable0b:
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mov r10, r0
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tst r0, r0
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bt 3b
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cmp/eq #-EWOULDBLOCK, r0
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bt 3b
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neg r0, r0
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mov r0, r8
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mova .Lgot0, r0
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mov.l .Lgot0, r12
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add r0, r12
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#if USE___THREAD
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mov.l .Lerrno0, r0
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stc gbr, r1
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mov.l @(r0, r12), r0
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add r1, r0
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mov.l r8, @r0
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#else
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mov.l .Lerrloc0, r1
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bsrf r1
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nop
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.Lerrloc0b:
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mov.l r8, @r0
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#endif
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mov #-1, r0
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9:
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lds.l @r15+, pr
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mov.l @r15+, r12
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mov.l @r15+, r10
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rts
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mov.l @r15+, r8
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5:
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/* Canceled. */
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stc gbr, r0
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mov.w .Lresult, r1
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mov #-1, r2
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mov.l r2, @(r0,r1)
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mov.w .Lchand, r0
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or.b #0x10, @(r0,gbr)
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stc gbr, r0
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mov.w .Lclbuf, r1
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mov.l .Lunwind, r2
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braf r2
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mov.l @(r0,r1), r4
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.Lunwindb:
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cfi_endproc
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.Lchand:
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.word CANCELHANDLING - TLS_PRE_TCB_SIZE
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.Lresult:
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.word RESULT - TLS_PRE_TCB_SIZE
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.Lclbuf:
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.word CLEANUP_JMP_BUF - TLS_PRE_TCB_SIZE
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.align 2
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.Lgot0:
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.long _GLOBAL_OFFSET_TABLE_
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#if USE___THREAD
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.Lerrno0:
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.long errno@GOTTPOFF
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#else
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.Lerrloc0:
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.long __errno_location@PLT-(.Lerrloc0b-.)
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#endif
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.Lenable0:
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.long __pthread_enable_asynccancel-.Lenable0b
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.Ldisable0:
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.long __pthread_disable_asynccancel-.Ldisable0b
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.Lunwind:
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.long HIDDEN_JUMPTARGET (__pthread_unwind)-.Lunwindb
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.size __new_sem_wait,.-__new_sem_wait
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versioned_symbol(libpthread, __new_sem_wait, sem_wait, GLIBC_2_1)
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