| /* Copyright (C) 2002-2005, 2007, 2009, 2010 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@redhat.com>, 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 <sysdep.h> |
| #include <shlib-compat.h> |
| #include <lowlevellock.h> |
| #include <lowlevelcond.h> |
| #include <pthread-pi-defines.h> |
| #include <pthread-errnos.h> |
| |
| #include <kernel-features.h> |
| |
| /* For the calculation see asm/vsyscall.h. */ |
| #define VSYSCALL_ADDR_vgettimeofday 0xffffffffff600000 |
| |
| |
| .text |
| |
| |
| /* int pthread_cond_timedwait (pthread_cond_t *cond, pthread_mutex_t *mutex, |
| const struct timespec *abstime) */ |
| .globl __pthread_cond_timedwait |
| .type __pthread_cond_timedwait, @function |
| .align 16 |
| __pthread_cond_timedwait: |
| .LSTARTCODE: |
| cfi_startproc |
| #ifdef SHARED |
| cfi_personality(DW_EH_PE_pcrel | DW_EH_PE_sdata4 | DW_EH_PE_indirect, |
| DW.ref.__gcc_personality_v0) |
| cfi_lsda(DW_EH_PE_pcrel | DW_EH_PE_sdata4, .LexceptSTART) |
| #else |
| cfi_personality(DW_EH_PE_udata4, __gcc_personality_v0) |
| cfi_lsda(DW_EH_PE_udata4, .LexceptSTART) |
| #endif |
| |
| pushq %r12 |
| cfi_adjust_cfa_offset(8) |
| cfi_rel_offset(%r12, 0) |
| pushq %r13 |
| cfi_adjust_cfa_offset(8) |
| cfi_rel_offset(%r13, 0) |
| pushq %r14 |
| cfi_adjust_cfa_offset(8) |
| cfi_rel_offset(%r14, 0) |
| pushq %r15 |
| cfi_adjust_cfa_offset(8) |
| cfi_rel_offset(%r15, 0) |
| #ifdef __ASSUME_FUTEX_CLOCK_REALTIME |
| # define FRAME_SIZE 32 |
| #else |
| # define FRAME_SIZE 48 |
| #endif |
| subq $FRAME_SIZE, %rsp |
| cfi_adjust_cfa_offset(FRAME_SIZE) |
| cfi_remember_state |
| |
| cmpq $1000000000, 8(%rdx) |
| movl $EINVAL, %eax |
| jae 48f |
| |
| /* Stack frame: |
| |
| rsp + 48 |
| +--------------------------+ |
| rsp + 32 | timeout value | |
| +--------------------------+ |
| rsp + 24 | old wake_seq value | |
| +--------------------------+ |
| rsp + 16 | mutex pointer | |
| +--------------------------+ |
| rsp + 8 | condvar pointer | |
| +--------------------------+ |
| rsp + 4 | old broadcast_seq value | |
| +--------------------------+ |
| rsp + 0 | old cancellation mode | |
| +--------------------------+ |
| */ |
| |
| cmpq $-1, dep_mutex(%rdi) |
| |
| /* Prepare structure passed to cancellation handler. */ |
| movq %rdi, 8(%rsp) |
| movq %rsi, 16(%rsp) |
| movq %rdx, %r13 |
| |
| je 22f |
| movq %rsi, dep_mutex(%rdi) |
| |
| 22: |
| #ifndef __ASSUME_FUTEX_CLOCK_REALTIME |
| # ifdef PIC |
| cmpl $0, __have_futex_clock_realtime(%rip) |
| # else |
| cmpl $0, __have_futex_clock_realtime |
| # endif |
| je .Lreltmo |
| #endif |
| |
| /* Get internal lock. */ |
| movl $1, %esi |
| xorl %eax, %eax |
| LOCK |
| #if cond_lock == 0 |
| cmpxchgl %esi, (%rdi) |
| #else |
| cmpxchgl %esi, cond_lock(%rdi) |
| #endif |
| jnz 31f |
| |
| /* Unlock the mutex. */ |
| 32: movq 16(%rsp), %rdi |
| xorl %esi, %esi |
| callq __pthread_mutex_unlock_usercnt |
| |
| testl %eax, %eax |
| jne 46f |
| |
| movq 8(%rsp), %rdi |
| incq total_seq(%rdi) |
| incl cond_futex(%rdi) |
| addl $(1 << nwaiters_shift), cond_nwaiters(%rdi) |
| |
| /* Get and store current wakeup_seq value. */ |
| movq 8(%rsp), %rdi |
| movq wakeup_seq(%rdi), %r9 |
| movl broadcast_seq(%rdi), %edx |
| movq %r9, 24(%rsp) |
| movl %edx, 4(%rsp) |
| |
| cmpq $0, (%r13) |
| movq $-ETIMEDOUT, %r14 |
| js 36f |
| |
| 38: movl cond_futex(%rdi), %r12d |
| |
| /* Unlock. */ |
| LOCK |
| #if cond_lock == 0 |
| decl (%rdi) |
| #else |
| decl cond_lock(%rdi) |
| #endif |
| jne 33f |
| |
| .LcleanupSTART1: |
| 34: callq __pthread_enable_asynccancel |
| movl %eax, (%rsp) |
| |
| movq %r13, %r10 |
| movl $FUTEX_WAIT_BITSET, %esi |
| cmpq $-1, dep_mutex(%rdi) |
| je 60f |
| |
| movq dep_mutex(%rdi), %r8 |
| /* Requeue to a non-robust PI mutex if the PI bit is set and |
| the robust bit is not set. */ |
| movl MUTEX_KIND(%r8), %eax |
| andl $(ROBUST_BIT|PI_BIT), %eax |
| cmpl $PI_BIT, %eax |
| jne 61f |
| |
| movl $(FUTEX_WAIT_REQUEUE_PI|FUTEX_PRIVATE_FLAG), %esi |
| xorl %eax, %eax |
| /* The following only works like this because we only support |
| two clocks, represented using a single bit. */ |
| testl $1, cond_nwaiters(%rdi) |
| movl $FUTEX_CLOCK_REALTIME, %edx |
| cmove %edx, %eax |
| orl %eax, %esi |
| movq %r12, %rdx |
| addq $cond_futex, %rdi |
| movl $SYS_futex, %eax |
| syscall |
| |
| movl $1, %r15d |
| #ifdef __ASSUME_REQUEUE_PI |
| jmp 62f |
| #else |
| cmpq $-4095, %rax |
| jnae 62f |
| |
| subq $cond_futex, %rdi |
| #endif |
| |
| 61: movl $(FUTEX_WAIT_BITSET|FUTEX_PRIVATE_FLAG), %esi |
| 60: xorl %r15d, %r15d |
| xorl %eax, %eax |
| /* The following only works like this because we only support |
| two clocks, represented using a single bit. */ |
| testl $1, cond_nwaiters(%rdi) |
| movl $FUTEX_CLOCK_REALTIME, %edx |
| movl $0xffffffff, %r9d |
| cmove %edx, %eax |
| orl %eax, %esi |
| movq %r12, %rdx |
| addq $cond_futex, %rdi |
| movl $SYS_futex, %eax |
| syscall |
| 62: movq %rax, %r14 |
| |
| movl (%rsp), %edi |
| callq __pthread_disable_asynccancel |
| .LcleanupEND1: |
| |
| /* Lock. */ |
| movq 8(%rsp), %rdi |
| movl $1, %esi |
| xorl %eax, %eax |
| LOCK |
| #if cond_lock == 0 |
| cmpxchgl %esi, (%rdi) |
| #else |
| cmpxchgl %esi, cond_lock(%rdi) |
| #endif |
| jne 35f |
| |
| 36: movl broadcast_seq(%rdi), %edx |
| |
| movq woken_seq(%rdi), %rax |
| |
| movq wakeup_seq(%rdi), %r9 |
| |
| cmpl 4(%rsp), %edx |
| jne 53f |
| |
| cmpq 24(%rsp), %r9 |
| jbe 45f |
| |
| cmpq %rax, %r9 |
| ja 39f |
| |
| 45: cmpq $-ETIMEDOUT, %r14 |
| jne 38b |
| |
| 99: incq wakeup_seq(%rdi) |
| incl cond_futex(%rdi) |
| movl $ETIMEDOUT, %r14d |
| jmp 44f |
| |
| 53: xorq %r14, %r14 |
| jmp 54f |
| |
| 39: xorq %r14, %r14 |
| 44: incq woken_seq(%rdi) |
| |
| 54: subl $(1 << nwaiters_shift), cond_nwaiters(%rdi) |
| |
| /* Wake up a thread which wants to destroy the condvar object. */ |
| cmpq $0xffffffffffffffff, total_seq(%rdi) |
| jne 55f |
| movl cond_nwaiters(%rdi), %eax |
| andl $~((1 << nwaiters_shift) - 1), %eax |
| jne 55f |
| |
| addq $cond_nwaiters, %rdi |
| cmpq $-1, dep_mutex-cond_nwaiters(%rdi) |
| movl $1, %edx |
| #ifdef __ASSUME_PRIVATE_FUTEX |
| movl $FUTEX_WAKE, %eax |
| movl $(FUTEX_WAKE|FUTEX_PRIVATE_FLAG), %esi |
| cmove %eax, %esi |
| #else |
| movl $0, %eax |
| movl %fs:PRIVATE_FUTEX, %esi |
| cmove %eax, %esi |
| orl $FUTEX_WAKE, %esi |
| #endif |
| movl $SYS_futex, %eax |
| syscall |
| subq $cond_nwaiters, %rdi |
| |
| 55: LOCK |
| #if cond_lock == 0 |
| decl (%rdi) |
| #else |
| decl cond_lock(%rdi) |
| #endif |
| jne 40f |
| |
| /* If requeue_pi is used the kernel performs the locking of the |
| mutex. */ |
| 41: movq 16(%rsp), %rdi |
| testl %r15d, %r15d |
| jnz 64f |
| |
| callq __pthread_mutex_cond_lock |
| |
| 63: testq %rax, %rax |
| cmoveq %r14, %rax |
| |
| 48: addq $FRAME_SIZE, %rsp |
| cfi_adjust_cfa_offset(-FRAME_SIZE) |
| popq %r15 |
| cfi_adjust_cfa_offset(-8) |
| cfi_restore(%r15) |
| popq %r14 |
| cfi_adjust_cfa_offset(-8) |
| cfi_restore(%r14) |
| popq %r13 |
| cfi_adjust_cfa_offset(-8) |
| cfi_restore(%r13) |
| popq %r12 |
| cfi_adjust_cfa_offset(-8) |
| cfi_restore(%r12) |
| |
| retq |
| |
| cfi_restore_state |
| |
| 64: callq __pthread_mutex_cond_lock_adjust |
| movq %r14, %rax |
| jmp 48b |
| |
| /* Initial locking failed. */ |
| 31: |
| #if cond_lock != 0 |
| addq $cond_lock, %rdi |
| #endif |
| cmpq $-1, dep_mutex-cond_lock(%rdi) |
| movl $LLL_PRIVATE, %eax |
| movl $LLL_SHARED, %esi |
| cmovne %eax, %esi |
| callq __lll_lock_wait |
| jmp 32b |
| |
| /* Unlock in loop requires wakeup. */ |
| 33: |
| #if cond_lock != 0 |
| addq $cond_lock, %rdi |
| #endif |
| cmpq $-1, dep_mutex-cond_lock(%rdi) |
| movl $LLL_PRIVATE, %eax |
| movl $LLL_SHARED, %esi |
| cmovne %eax, %esi |
| callq __lll_unlock_wake |
| jmp 34b |
| |
| /* Locking in loop failed. */ |
| 35: |
| #if cond_lock != 0 |
| addq $cond_lock, %rdi |
| #endif |
| cmpq $-1, dep_mutex-cond_lock(%rdi) |
| movl $LLL_PRIVATE, %eax |
| movl $LLL_SHARED, %esi |
| cmovne %eax, %esi |
| callq __lll_lock_wait |
| #if cond_lock != 0 |
| subq $cond_lock, %rdi |
| #endif |
| jmp 36b |
| |
| /* Unlock after loop requires wakeup. */ |
| 40: |
| #if cond_lock != 0 |
| addq $cond_lock, %rdi |
| #endif |
| cmpq $-1, dep_mutex-cond_lock(%rdi) |
| movl $LLL_PRIVATE, %eax |
| movl $LLL_SHARED, %esi |
| cmovne %eax, %esi |
| callq __lll_unlock_wake |
| jmp 41b |
| |
| /* The initial unlocking of the mutex failed. */ |
| 46: movq 8(%rsp), %rdi |
| movq %rax, (%rsp) |
| LOCK |
| #if cond_lock == 0 |
| decl (%rdi) |
| #else |
| decl cond_lock(%rdi) |
| #endif |
| jne 47f |
| |
| #if cond_lock != 0 |
| addq $cond_lock, %rdi |
| #endif |
| cmpq $-1, dep_mutex-cond_lock(%rdi) |
| movl $LLL_PRIVATE, %eax |
| movl $LLL_SHARED, %esi |
| cmovne %eax, %esi |
| callq __lll_unlock_wake |
| |
| 47: movq (%rsp), %rax |
| jmp 48b |
| |
| |
| #ifndef __ASSUME_FUTEX_CLOCK_REALTIME |
| .Lreltmo: |
| xorl %r15d, %r15d |
| |
| /* Get internal lock. */ |
| movl $1, %esi |
| xorl %eax, %eax |
| LOCK |
| # if cond_lock == 0 |
| cmpxchgl %esi, (%rdi) |
| # else |
| cmpxchgl %esi, cond_lock(%rdi) |
| # endif |
| jnz 1f |
| |
| /* Unlock the mutex. */ |
| 2: movq 16(%rsp), %rdi |
| xorl %esi, %esi |
| callq __pthread_mutex_unlock_usercnt |
| |
| testl %eax, %eax |
| jne 46b |
| |
| movq 8(%rsp), %rdi |
| incq total_seq(%rdi) |
| incl cond_futex(%rdi) |
| addl $(1 << nwaiters_shift), cond_nwaiters(%rdi) |
| |
| /* Get and store current wakeup_seq value. */ |
| movq 8(%rsp), %rdi |
| movq wakeup_seq(%rdi), %r9 |
| movl broadcast_seq(%rdi), %edx |
| movq %r9, 24(%rsp) |
| movl %edx, 4(%rsp) |
| |
| /* Get the current time. */ |
| 8: |
| # ifdef __NR_clock_gettime |
| /* Get the clock number. Note that the field in the condvar |
| structure stores the number minus 1. */ |
| movq 8(%rsp), %rdi |
| movl cond_nwaiters(%rdi), %edi |
| andl $((1 << nwaiters_shift) - 1), %edi |
| /* Only clocks 0 and 1 are allowed so far. Both are handled in the |
| kernel. */ |
| leaq 32(%rsp), %rsi |
| # ifdef SHARED |
| movq __vdso_clock_gettime@GOTPCREL(%rip), %rax |
| movq (%rax), %rax |
| PTR_DEMANGLE (%rax) |
| jz 26f |
| call *%rax |
| jmp 27f |
| # endif |
| 26: movl $__NR_clock_gettime, %eax |
| syscall |
| 27: |
| # ifndef __ASSUME_POSIX_TIMERS |
| cmpq $-ENOSYS, %rax |
| je 19f |
| # endif |
| |
| /* Compute relative timeout. */ |
| movq (%r13), %rcx |
| movq 8(%r13), %rdx |
| subq 32(%rsp), %rcx |
| subq 40(%rsp), %rdx |
| # else |
| leaq 24(%rsp), %rdi |
| xorl %esi, %esi |
| movq $VSYSCALL_ADDR_vgettimeofday, %rax |
| callq *%rax |
| |
| /* Compute relative timeout. */ |
| movq 40(%rsp), %rax |
| movl $1000, %edx |
| mul %rdx /* Milli seconds to nano seconds. */ |
| movq (%r13), %rcx |
| movq 8(%r13), %rdx |
| subq 32(%rsp), %rcx |
| subq %rax, %rdx |
| # endif |
| jns 12f |
| addq $1000000000, %rdx |
| decq %rcx |
| 12: testq %rcx, %rcx |
| movq 8(%rsp), %rdi |
| movq $-ETIMEDOUT, %r14 |
| js 6f |
| |
| /* Store relative timeout. */ |
| 21: movq %rcx, 32(%rsp) |
| movq %rdx, 40(%rsp) |
| |
| movl cond_futex(%rdi), %r12d |
| |
| /* Unlock. */ |
| LOCK |
| # if cond_lock == 0 |
| decl (%rdi) |
| # else |
| decl cond_lock(%rdi) |
| # endif |
| jne 3f |
| |
| .LcleanupSTART2: |
| 4: callq __pthread_enable_asynccancel |
| movl %eax, (%rsp) |
| |
| leaq 32(%rsp), %r10 |
| cmpq $-1, dep_mutex(%rdi) |
| movq %r12, %rdx |
| # ifdef __ASSUME_PRIVATE_FUTEX |
| movl $FUTEX_WAIT, %eax |
| movl $(FUTEX_WAIT|FUTEX_PRIVATE_FLAG), %esi |
| cmove %eax, %esi |
| # else |
| movl $0, %eax |
| movl %fs:PRIVATE_FUTEX, %esi |
| cmove %eax, %esi |
| # if FUTEX_WAIT != 0 |
| orl $FUTEX_WAIT, %esi |
| # endif |
| # endif |
| addq $cond_futex, %rdi |
| movl $SYS_futex, %eax |
| syscall |
| movq %rax, %r14 |
| |
| movl (%rsp), %edi |
| callq __pthread_disable_asynccancel |
| .LcleanupEND2: |
| |
| /* Lock. */ |
| movq 8(%rsp), %rdi |
| movl $1, %esi |
| xorl %eax, %eax |
| LOCK |
| # if cond_lock == 0 |
| cmpxchgl %esi, (%rdi) |
| # else |
| cmpxchgl %esi, cond_lock(%rdi) |
| # endif |
| jne 5f |
| |
| 6: movl broadcast_seq(%rdi), %edx |
| |
| movq woken_seq(%rdi), %rax |
| |
| movq wakeup_seq(%rdi), %r9 |
| |
| cmpl 4(%rsp), %edx |
| jne 53b |
| |
| cmpq 24(%rsp), %r9 |
| jbe 15f |
| |
| cmpq %rax, %r9 |
| ja 39b |
| |
| 15: cmpq $-ETIMEDOUT, %r14 |
| jne 8b |
| |
| jmp 99b |
| |
| /* Initial locking failed. */ |
| 1: |
| # if cond_lock != 0 |
| addq $cond_lock, %rdi |
| # endif |
| cmpq $-1, dep_mutex-cond_lock(%rdi) |
| movl $LLL_PRIVATE, %eax |
| movl $LLL_SHARED, %esi |
| cmovne %eax, %esi |
| callq __lll_lock_wait |
| jmp 2b |
| |
| /* Unlock in loop requires wakeup. */ |
| 3: |
| # if cond_lock != 0 |
| addq $cond_lock, %rdi |
| # endif |
| cmpq $-1, dep_mutex-cond_lock(%rdi) |
| movl $LLL_PRIVATE, %eax |
| movl $LLL_SHARED, %esi |
| cmovne %eax, %esi |
| callq __lll_unlock_wake |
| jmp 4b |
| |
| /* Locking in loop failed. */ |
| 5: |
| # if cond_lock != 0 |
| addq $cond_lock, %rdi |
| # endif |
| cmpq $-1, dep_mutex-cond_lock(%rdi) |
| movl $LLL_PRIVATE, %eax |
| movl $LLL_SHARED, %esi |
| cmovne %eax, %esi |
| callq __lll_lock_wait |
| # if cond_lock != 0 |
| subq $cond_lock, %rdi |
| # endif |
| jmp 6b |
| |
| # if defined __NR_clock_gettime && !defined __ASSUME_POSIX_TIMERS |
| /* clock_gettime not available. */ |
| 19: leaq 32(%rsp), %rdi |
| xorl %esi, %esi |
| movq $VSYSCALL_ADDR_vgettimeofday, %rax |
| callq *%rax |
| |
| /* Compute relative timeout. */ |
| movq 40(%rsp), %rax |
| movl $1000, %edx |
| mul %rdx /* Milli seconds to nano seconds. */ |
| movq (%r13), %rcx |
| movq 8(%r13), %rdx |
| subq 32(%rsp), %rcx |
| subq %rax, %rdx |
| jns 20f |
| addq $1000000000, %rdx |
| decq %rcx |
| 20: testq %rcx, %rcx |
| movq 8(%rsp), %rdi |
| movq $-ETIMEDOUT, %r14 |
| js 6b |
| jmp 21b |
| # endif |
| #endif |
| .size __pthread_cond_timedwait, .-__pthread_cond_timedwait |
| versioned_symbol (libpthread, __pthread_cond_timedwait, pthread_cond_timedwait, |
| GLIBC_2_3_2) |
| |
| |
| .align 16 |
| .type __condvar_cleanup2, @function |
| __condvar_cleanup2: |
| /* Stack frame: |
| |
| rsp + 72 |
| +--------------------------+ |
| rsp + 64 | %r12 | |
| +--------------------------+ |
| rsp + 56 | %r13 | |
| +--------------------------+ |
| rsp + 48 | %r14 | |
| +--------------------------+ |
| rsp + 24 | unused | |
| +--------------------------+ |
| rsp + 16 | mutex pointer | |
| +--------------------------+ |
| rsp + 8 | condvar pointer | |
| +--------------------------+ |
| rsp + 4 | old broadcast_seq value | |
| +--------------------------+ |
| rsp + 0 | old cancellation mode | |
| +--------------------------+ |
| */ |
| |
| movq %rax, 24(%rsp) |
| |
| /* Get internal lock. */ |
| movq 8(%rsp), %rdi |
| movl $1, %esi |
| xorl %eax, %eax |
| LOCK |
| #if cond_lock == 0 |
| cmpxchgl %esi, (%rdi) |
| #else |
| cmpxchgl %esi, cond_lock(%rdi) |
| #endif |
| jz 1f |
| |
| #if cond_lock != 0 |
| addq $cond_lock, %rdi |
| #endif |
| cmpq $-1, dep_mutex-cond_lock(%rdi) |
| movl $LLL_PRIVATE, %eax |
| movl $LLL_SHARED, %esi |
| cmovne %eax, %esi |
| callq __lll_lock_wait |
| #if cond_lock != 0 |
| subq $cond_lock, %rdi |
| #endif |
| |
| 1: movl broadcast_seq(%rdi), %edx |
| cmpl 4(%rsp), %edx |
| jne 3f |
| |
| /* We increment the wakeup_seq counter only if it is lower than |
| total_seq. If this is not the case the thread was woken and |
| then canceled. In this case we ignore the signal. */ |
| movq total_seq(%rdi), %rax |
| cmpq wakeup_seq(%rdi), %rax |
| jbe 6f |
| incq wakeup_seq(%rdi) |
| incl cond_futex(%rdi) |
| 6: incq woken_seq(%rdi) |
| |
| 3: subl $(1 << nwaiters_shift), cond_nwaiters(%rdi) |
| |
| /* Wake up a thread which wants to destroy the condvar object. */ |
| xorq %r12, %r12 |
| cmpq $0xffffffffffffffff, total_seq(%rdi) |
| jne 4f |
| movl cond_nwaiters(%rdi), %eax |
| andl $~((1 << nwaiters_shift) - 1), %eax |
| jne 4f |
| |
| cmpq $-1, dep_mutex(%rdi) |
| leaq cond_nwaiters(%rdi), %rdi |
| movl $1, %edx |
| #ifdef __ASSUME_PRIVATE_FUTEX |
| movl $FUTEX_WAKE, %eax |
| movl $(FUTEX_WAKE|FUTEX_PRIVATE_FLAG), %esi |
| cmove %eax, %esi |
| #else |
| movl $0, %eax |
| movl %fs:PRIVATE_FUTEX, %esi |
| cmove %eax, %esi |
| orl $FUTEX_WAKE, %esi |
| #endif |
| movl $SYS_futex, %eax |
| syscall |
| subq $cond_nwaiters, %rdi |
| movl $1, %r12d |
| |
| 4: LOCK |
| #if cond_lock == 0 |
| decl (%rdi) |
| #else |
| decl cond_lock(%rdi) |
| #endif |
| je 2f |
| #if cond_lock != 0 |
| addq $cond_lock, %rdi |
| #endif |
| cmpq $-1, dep_mutex-cond_lock(%rdi) |
| movl $LLL_PRIVATE, %eax |
| movl $LLL_SHARED, %esi |
| cmovne %eax, %esi |
| callq __lll_unlock_wake |
| |
| /* Wake up all waiters to make sure no signal gets lost. */ |
| 2: testq %r12, %r12 |
| jnz 5f |
| addq $cond_futex, %rdi |
| cmpq $-1, dep_mutex-cond_futex(%rdi) |
| movl $0x7fffffff, %edx |
| #ifdef __ASSUME_PRIVATE_FUTEX |
| movl $FUTEX_WAKE, %eax |
| movl $(FUTEX_WAKE|FUTEX_PRIVATE_FLAG), %esi |
| cmove %eax, %esi |
| #else |
| movl $0, %eax |
| movl %fs:PRIVATE_FUTEX, %esi |
| cmove %eax, %esi |
| orl $FUTEX_WAKE, %esi |
| #endif |
| movl $SYS_futex, %eax |
| syscall |
| |
| 5: movq 16(%rsp), %rdi |
| callq __pthread_mutex_cond_lock |
| |
| movq 24(%rsp), %rdi |
| movq FRAME_SIZE(%rsp), %r15 |
| movq FRAME_SIZE+8(%rsp), %r14 |
| movq FRAME_SIZE+16(%rsp), %r13 |
| movq FRAME_SIZE+24(%rsp), %r12 |
| .LcallUR: |
| call _Unwind_Resume@PLT |
| hlt |
| .LENDCODE: |
| cfi_endproc |
| .size __condvar_cleanup2, .-__condvar_cleanup2 |
| |
| |
| .section .gcc_except_table,"a",@progbits |
| .LexceptSTART: |
| .byte DW_EH_PE_omit # @LPStart format |
| .byte DW_EH_PE_omit # @TType format |
| .byte DW_EH_PE_uleb128 # call-site format |
| .uleb128 .Lcstend-.Lcstbegin |
| .Lcstbegin: |
| .uleb128 .LcleanupSTART1-.LSTARTCODE |
| .uleb128 .LcleanupEND1-.LcleanupSTART1 |
| .uleb128 __condvar_cleanup2-.LSTARTCODE |
| .uleb128 0 |
| #ifndef __ASSUME_FUTEX_CLOCK_REALTIME |
| .uleb128 .LcleanupSTART2-.LSTARTCODE |
| .uleb128 .LcleanupEND2-.LcleanupSTART2 |
| .uleb128 __condvar_cleanup2-.LSTARTCODE |
| .uleb128 0 |
| #endif |
| .uleb128 .LcallUR-.LSTARTCODE |
| .uleb128 .LENDCODE-.LcallUR |
| .uleb128 0 |
| .uleb128 0 |
| .Lcstend: |
| |
| |
| #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 8 |
| .type DW.ref.__gcc_personality_v0, @object |
| .size DW.ref.__gcc_personality_v0, 8 |
| DW.ref.__gcc_personality_v0: |
| .quad __gcc_personality_v0 |
| #endif |
