1 /* Copyright (C) 2002, 2003, 2005, 2007, 2009 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 #include <lowlevellock.h>
22 #include <pthread-errnos.h>
23 #include <structsem.h>
29 .type sem_wait,@function
35 cfi_personality(DW_EH_PE_pcrel | DW_EH_PE_sdata4 | DW_EH_PE_indirect,
36 DW.ref.__gcc_personality_v0)
37 cfi_lsda(DW_EH_PE_pcrel | DW_EH_PE_sdata4, .LexceptSTART)
39 cfi_personality(DW_EH_PE_udata4, __gcc_personality_v0)
40 cfi_lsda(DW_EH_PE_udata4, .LexceptSTART)
46 movl VALUE(%rdi), %eax
56 cmpxchgl %edx, VALUE(%rdi)
63 /* This push is only needed to store the sem_t pointer for the
66 cfi_adjust_cfa_offset(8)
69 addq $1, NWAITERS(%rdi)
72 6: call __pthread_enable_asynccancel
78 movl PRIVATE(%rdi), %esi
80 movl $FUTEX_WAIT, %esi
81 orl PRIVATE(%rdi), %esi
88 call __pthread_disable_asynccancel
94 cmpq $-EWOULDBLOCK, %rcx
101 movl VALUE(%rdi), %eax
109 cmpxchgl %edx, (%rdi)
111 cmpxchgl %edx, VALUE(%rdi)
118 subq $1, NWAITERS(%rdi)
121 cfi_adjust_cfa_offset(-8)
125 cfi_adjust_cfa_offset(8)
128 movq errno@gottpoff(%rip), %rdx
129 movl %ecx, %fs:(%rdx)
131 # error "not supported. %rcx and %rdi must be preserved"
132 callq __errno_location@plt
138 .size sem_wait,.-sem_wait
141 .type sem_wait_cleanup,@function
145 subq $1, NWAITERS(%rdi)
148 call _Unwind_Resume@PLT
152 .size sem_wait_cleanup,.-sem_wait_cleanup
155 .section .gcc_except_table,"a",@progbits
157 .byte DW_EH_PE_omit # @LPStart format
158 .byte DW_EH_PE_omit # @TType format
159 .byte DW_EH_PE_uleb128 # call-site format
160 .uleb128 .Lcstend-.Lcstbegin
162 .uleb128 .LcleanupSTART-.LSTARTCODE
163 .uleb128 .LcleanupEND-.LcleanupSTART
164 .uleb128 sem_wait_cleanup-.LSTARTCODE
166 .uleb128 .LcallUR-.LSTARTCODE
167 .uleb128 .LENDCODE-.LcallUR
174 .hidden DW.ref.__gcc_personality_v0
175 .weak DW.ref.__gcc_personality_v0
176 .section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits
178 .type DW.ref.__gcc_personality_v0, @object
179 .size DW.ref.__gcc_personality_v0, 8
180 DW.ref.__gcc_personality_v0:
181 .quad __gcc_personality_v0