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https://sourceware.org/git/glibc.git
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Move SH code out of nptl/ subdirectory.
This commit is contained in:
Roland McGrath
229
sysdeps/unix/sysv/linux/sh/sem_wait.S
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229
sysdeps/unix/sysv/linux/sh/sem_wait.S
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/* Copyright (C) 2003-2014 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, see
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<http://www.gnu.org/licenses/>. */
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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 <structsem.h>
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#include <lowlevellock.h>
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#include "lowlevel-atomic.h"
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#if VALUE != 0
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# error "code needs to be rewritten for VALUE != 0"
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#endif
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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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.LSTARTCODE:
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#ifdef SHARED
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cfi_personality(DW_EH_PE_pcrel | DW_EH_PE_sdata4 | DW_EH_PE_indirect,
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DW.ref.__gcc_personality_v0)
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cfi_lsda(DW_EH_PE_pcrel | DW_EH_PE_sdata4, .LexceptSTART)
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#else
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cfi_personality(DW_EH_PE_absptr, __gcc_personality_v0)
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cfi_lsda(DW_EH_PE_absptr, .LexceptSTART)
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#endif
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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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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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7:
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mov #0, r0
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9:
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cfi_remember_state
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lds.l @r15+, pr
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cfi_adjust_cfa_offset (-4)
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cfi_restore (pr)
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mov.l @r15+, r12
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cfi_adjust_cfa_offset (-4)
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cfi_restore (r12)
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mov.l @r15+, r10
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cfi_adjust_cfa_offset (-4)
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cfi_restore (r10)
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rts
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mov.l @r15+, r8
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/* Omit CFI for restore in delay slot. */
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cfi_restore_state
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.Lafter_ret:
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1:
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INC (@(NWAITERS,r8),r2)
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.LcleanupSTART:
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6:
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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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#if FUTEX_WAIT == 0
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mov.l @(PRIVATE,r8), r5
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#else
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mov.l @(PRIVATE,r8), r5
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mov #FUTEX_WAIT, r0
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or r0, r5
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#endif
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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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.LcleanupEND:
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tst r0, r0
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bt 3f
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cmp/eq #-EWOULDBLOCK, r0
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bf 4f
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3:
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mov.l @r8, r0
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5:
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tst r0, r0
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bt 6b
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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 5b
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mov r2, r0
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DEC (@(NWAITERS,r8), r2)
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bra 7b
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nop
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4:
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neg r0, r0
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mov r0, r4
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DEC (@(NWAITERS,r8), r2)
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mov r4, 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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mov.l .Lerrno0, r0
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stc gbr, r1
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mov.l @(r0, r12), r0
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bra .Lexit
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add r1, r0
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.align 2
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.Lerrno0:
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.long errno@GOTTPOFF
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.Lexit:
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mov.l r8, @r0
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bra 9b
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mov #-1, r0
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.align 2
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.Lgot0:
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.long _GLOBAL_OFFSET_TABLE_
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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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.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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.type sem_wait_cleanup,@function
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sem_wait_cleanup:
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DEC (@(NWAITERS,r8), r2)
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.LcallUR:
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mov.l .Lresume, r1
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#ifdef PIC
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add r12, r1
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#endif
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jsr @r1
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nop
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sleep
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.align 2
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.Lresume:
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#ifdef PIC
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.long _Unwind_Resume@GOTOFF
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#else
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.long _Unwind_Resume
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#endif
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.LENDCODE:
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cfi_endproc
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.size sem_wait_cleanup,.-sem_wait_cleanup
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.section .gcc_except_table,"a",@progbits
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.LexceptSTART:
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.byte DW_EH_PE_omit ! @LPStart format (omit)
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.byte DW_EH_PE_omit ! @TType format (omit)
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.byte DW_EH_PE_uleb128 ! call-site format
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.uleb128 .Lcstend-.Lcstbegin
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.Lcstbegin:
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.uleb128 .LcleanupSTART-.LSTARTCODE
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.uleb128 .LcleanupEND-.LcleanupSTART
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.uleb128 sem_wait_cleanup-.LSTARTCODE
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.uleb128 0
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.uleb128 .LcallUR-.LSTARTCODE
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.uleb128 .LENDCODE-.LcallUR
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.uleb128 0
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.uleb128 0
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.Lcstend:
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#ifdef SHARED
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.hidden DW.ref.__gcc_personality_v0
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.weak DW.ref.__gcc_personality_v0
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.section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits
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.align 4
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.type DW.ref.__gcc_personality_v0, @object
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.size DW.ref.__gcc_personality_v0, 4
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DW.ref.__gcc_personality_v0:
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.long __gcc_personality_v0
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#endif
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