/* Copyright (C) 2002, 2003, 2005, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 2002. 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 #include #include #include #if VALUE != 0 # error "code needs to be rewritten for VALUE != 0" #endif .text .globl sem_wait .type sem_wait,@function .align 16 sem_wait: .LSTARTCODE: pushl %ebx .Lpush_ebx: pushl %esi .Lpush_esi: subl $4, %esp .Lsub_esp: movl 16(%esp), %ebx movl (%ebx), %eax 2: testl %eax, %eax je 1f leal -1(%eax), %edx LOCK cmpxchgl %edx, (%ebx) jne 2b 7: xorl %eax, %eax 9: movl 4(%esp), %esi movl 8(%esp), %ebx addl $12, %esp .Ladd_esp: ret .Lafter_ret: 1: LOCK incl NWAITERS(%ebx) .LcleanupSTART: 6: call __pthread_enable_asynccancel movl %eax, (%esp) #if FUTEX_WAIT == 0 movl PRIVATE(%ebx), %ecx #else movl $FUTEX_WAIT, %ecx orl PRIVATE(%ebx), %ecx #endif xorl %esi, %esi xorl %edx, %edx movl $SYS_futex, %eax ENTER_KERNEL movl %eax, %esi movl (%esp), %eax call __pthread_disable_asynccancel .LcleanupEND: testl %esi, %esi je 3f cmpl $-EWOULDBLOCK, %esi jne 4f 3: movl (%ebx), %eax 5: testl %eax, %eax je 6b leal -1(%eax), %edx LOCK cmpxchgl %edx, (%ebx) jne 5b LOCK decl NWAITERS(%ebx) jmp 7b 4: LOCK decl NWAITERS(%ebx) negl %esi #ifdef __PIC__ call __x86.get_pc_thunk.bx #else movl $8f, %ebx 8: #endif addl $_GLOBAL_OFFSET_TABLE_, %ebx #if USE___THREAD # ifdef NO_TLS_DIRECT_SEG_REFS movl errno@gotntpoff(%ebx), %edx addl %gs:0, %edx movl %esi, (%edx) # else movl errno@gotntpoff(%ebx), %edx movl %esi, %gs:(%edx) # endif #else call __errno_location@plt movl %esi, (%eax) #endif orl $-1, %eax jmp 9b .size sem_wait,.-sem_wait .type sem_wait_cleanup,@function sem_wait_cleanup: LOCK decl NWAITERS(%ebx) movl %eax, (%esp) .LcallUR: call _Unwind_Resume@PLT hlt .LENDCODE: .size sem_wait_cleanup,.-sem_wait_cleanup .section .gcc_except_table,"a",@progbits .LexceptSTART: .byte 0xff # @LPStart format (omit) .byte 0xff # @TType format (omit) .byte 0x01 # call-site format # DW_EH_PE_uleb128 .uleb128 .Lcstend-.Lcstbegin .Lcstbegin: .uleb128 .LcleanupSTART-.LSTARTCODE .uleb128 .LcleanupEND-.LcleanupSTART .uleb128 sem_wait_cleanup-.LSTARTCODE .uleb128 0 .uleb128 .LcallUR-.LSTARTCODE .uleb128 .LENDCODE-.LcallUR .uleb128 0 .uleb128 0 .Lcstend: .section .eh_frame,"a",@progbits .LSTARTFRAME: .long .LENDCIE-.LSTARTCIE # Length of the CIE. .LSTARTCIE: .long 0 # CIE ID. .byte 1 # Version number. #ifdef SHARED .string "zPLR" # NUL-terminated augmentation # string. #else .string "zPL" # NUL-terminated augmentation # string. #endif .uleb128 1 # Code alignment factor. .sleb128 -4 # Data alignment factor. .byte 8 # Return address register # column. #ifdef SHARED .uleb128 7 # Augmentation value length. .byte 0x9b # Personality: DW_EH_PE_pcrel # + DW_EH_PE_sdata4 # + DW_EH_PE_indirect .long DW.ref.__gcc_personality_v0-. .byte 0x1b # LSDA Encoding: DW_EH_PE_pcrel # + DW_EH_PE_sdata4. .byte 0x1b # FDE Encoding: DW_EH_PE_pcrel # + DW_EH_PE_sdata4. #else .uleb128 6 # Augmentation value length. .byte 0x0 # Personality: absolute .long __gcc_personality_v0 .byte 0x0 # LSDA Encoding: absolute #endif .byte 0x0c # DW_CFA_def_cfa .uleb128 4 .uleb128 4 .byte 0x88 # DW_CFA_offset, column 0x10 .uleb128 1 .align 4 .LENDCIE: .long .LENDFDE-.LSTARTFDE # Length of the FDE. .LSTARTFDE: .long .LSTARTFDE-.LSTARTFRAME # CIE pointer. #ifdef SHARED .long .LSTARTCODE-. # PC-relative start address # of the code. #else .long .LSTARTCODE # Start address of the code. #endif .long .LENDCODE-.LSTARTCODE # Length of the code. .uleb128 4 # Augmentation size #ifdef SHARED .long .LexceptSTART-. #else .long .LexceptSTART #endif .byte 4 # DW_CFA_advance_loc4 .long .Lpush_ebx-.LSTARTCODE .byte 14 # DW_CFA_def_cfa_offset .uleb128 8 .byte 0x83 # DW_CFA_offset %ebx .uleb128 2 .byte 4 # DW_CFA_advance_loc4 .long .Lpush_esi-.Lpush_ebx .byte 14 # DW_CFA_def_cfa_offset .uleb128 12 .byte 0x86 # DW_CFA_offset %esi .uleb128 3 .byte 4 # DW_CFA_advance_loc4 .long .Lsub_esp-.Lpush_esi .byte 14 # DW_CFA_def_cfa_offset .uleb128 16 .byte 4 # DW_CFA_advance_loc4 .long .Ladd_esp-.Lsub_esp .byte 14 # DW_CFA_def_cfa_offset .uleb128 4 .byte 0xc3 # DW_CFA_restore %ebx .byte 0xc6 # DW_CFA_restore %esi .byte 4 # DW_CFA_advance_loc4 .long .Lafter_ret-.Ladd_esp .byte 14 # DW_CFA_def_cfa_offset .uleb128 16 .byte 0x83 # DW_CFA_offset %ebx .uleb128 2 .byte 0x86 # DW_CFA_offset %esi .uleb128 3 .align 4 .LENDFDE: #ifdef SHARED .hidden DW.ref.__gcc_personality_v0 .weak DW.ref.__gcc_personality_v0 .section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits .align 4 .type DW.ref.__gcc_personality_v0, @object .size DW.ref.__gcc_personality_v0, 4 DW.ref.__gcc_personality_v0: .long __gcc_personality_v0 #endif