diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_timedrdlock.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_timedrdlock.S | 274 |
1 files changed, 0 insertions, 274 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_timedrdlock.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_timedrdlock.S deleted file mode 100644 index 40bcc04a9d..0000000000 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_rwlock_timedrdlock.S +++ /dev/null @@ -1,274 +0,0 @@ -/* Copyright (C) 2002-2014 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, see - <http://www.gnu.org/licenses/>. */ - -#include <sysdep.h> -#include <lowlevellock.h> -#include <lowlevelrwlock.h> -#include <pthread-errnos.h> -#include <kernel-features.h> - - .text - - .globl pthread_rwlock_timedrdlock - .type pthread_rwlock_timedrdlock,@function - .align 16 -pthread_rwlock_timedrdlock: - cfi_startproc - pushq %r12 - cfi_adjust_cfa_offset(8) - cfi_rel_offset(%r12, 0) - pushq %r13 - cfi_adjust_cfa_offset(8) - cfi_rel_offset(%r13, 0) -#ifdef __ASSUME_FUTEX_CLOCK_REALTIME -# define VALREG %edx -#else - pushq %r14 - cfi_adjust_cfa_offset(8) - cfi_rel_offset(%r14, 0) - - subq $16, %rsp - cfi_adjust_cfa_offset(16) -# define VALREG %r14d -#endif - - movq %rdi, %r12 - movq %rsi, %r13 - - /* Get the lock. */ - movl $1, %esi - xorl %eax, %eax - LOCK -#if MUTEX == 0 - cmpxchgl %esi, (%rdi) -#else - cmpxchgl %esi, MUTEX(%rdi) -#endif - jnz 1f - -2: movl WRITER(%r12), %eax - testl %eax, %eax - jne 14f - cmpl $0, WRITERS_QUEUED(%r12) - je 5f - cmpl $0, FLAGS(%r12) - je 5f - - /* Check the value of the timeout parameter. */ -3: cmpq $1000000000, 8(%r13) - jae 19f - - incl READERS_QUEUED(%r12) - je 4f - - movl READERS_WAKEUP(%r12), VALREG - - /* Unlock. */ - LOCK -#if MUTEX == 0 - decl (%r12) -#else - decl MUTEX(%r12) -#endif - jne 10f - -11: -#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 - - cmpq $0, (%r13) - js 16f /* Time is already up. */ - - movl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT_BITSET|FUTEX_CLOCK_REALTIME, %esi - xorl PSHARED(%r12), %esi - movq %r13, %r10 - movl $0xffffffff, %r9d -#ifndef __ASSUME_FUTEX_CLOCK_REALTIME - movl %r14d, %edx -#endif -21: leaq READERS_WAKEUP(%r12), %rdi - movl $SYS_futex, %eax - syscall - movq %rax, %rdx - -#ifndef __ASSUME_FUTEX_CLOCK_REALTIME - .subsection 2 -.Lreltmo: - /* Get current time. */ - movq %rsp, %rdi - xorl %esi, %esi - /* This call works because we directly jump to a system call entry - which preserves all the registers. */ - call JUMPTARGET(__gettimeofday) - - /* Compute relative timeout. */ - movq 8(%rsp), %rax - movl $1000, %edi - mul %rdi /* Milli seconds to nano seconds. */ - movq (%r13), %rcx - movq 8(%r13), %rdi - subq (%rsp), %rcx - subq %rax, %rdi - jns 15f - addq $1000000000, %rdi - decq %rcx -15: testq %rcx, %rcx - js 16f /* Time is already up. */ - - /* Futex call. */ - movq %rcx, (%rsp) /* Store relative timeout. */ - movq %rdi, 8(%rsp) - -# ifdef __ASSUME_PRIVATE_FUTEX - movl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %esi - xorl PSHARED(%r12), %esi -# else -# if FUTEX_WAIT == 0 - movl PSHARED(%r12), %esi -# else - movl $FUTEX_WAIT, %esi - orl PSHARED(%r12), %esi -# endif - xorl %fs:PRIVATE_FUTEX, %esi -# endif - movq %rsp, %r10 - movl %r14d, %edx - - jmp 21b - .previous -#endif - -17: /* Reget the lock. */ - movl $1, %esi - xorl %eax, %eax - LOCK -#if MUTEX == 0 - cmpxchgl %esi, (%r12) -#else - cmpxchgl %esi, MUTEX(%r12) -#endif - jnz 12f - -13: decl READERS_QUEUED(%r12) - cmpq $-ETIMEDOUT, %rdx - jne 2b - -18: movl $ETIMEDOUT, %edx - jmp 9f - - -5: xorl %edx, %edx - incl NR_READERS(%r12) - je 8f -9: LOCK -#if MUTEX == 0 - decl (%r12) -#else - decl MUTEX(%r12) -#endif - jne 6f - -7: movq %rdx, %rax - -#ifndef __ASSUME_FUTEX_CLOCK_REALTIME - addq $16, %rsp - cfi_adjust_cfa_offset(-16) - popq %r14 - cfi_adjust_cfa_offset(-8) - cfi_restore(%r14) -#endif - popq %r13 - cfi_adjust_cfa_offset(-8) - cfi_restore(%r13) - popq %r12 - cfi_adjust_cfa_offset(-8) - cfi_restore(%r12) - retq - -#ifdef __ASSUME_PRIVATE_FUTEX - cfi_adjust_cfa_offset(16) - cfi_rel_offset(%r12, 8) - cfi_rel_offset(%r13, 0) -#else - cfi_adjust_cfa_offset(40) - cfi_offset(%r12, -16) - cfi_offset(%r13, -24) - cfi_offset(%r14, -32) -#endif -1: movl PSHARED(%rdi), %esi -#if MUTEX != 0 - addq $MUTEX, %rdi -#endif - callq __lll_lock_wait - jmp 2b - -14: cmpl %fs:TID, %eax - jne 3b - movl $EDEADLK, %edx - jmp 9b - -6: movl PSHARED(%r12), %esi -#if MUTEX == 0 - movq %r12, %rdi -#else - leal MUTEX(%r12), %rdi -#endif - callq __lll_unlock_wake - jmp 7b - - /* Overflow. */ -8: decl NR_READERS(%r12) - movl $EAGAIN, %edx - jmp 9b - - /* Overflow. */ -4: decl READERS_QUEUED(%r12) - movl $EAGAIN, %edx - jmp 9b - -10: movl PSHARED(%r12), %esi -#if MUTEX == 0 - movq %r12, %rdi -#else - leaq MUTEX(%r12), %rdi -#endif - callq __lll_unlock_wake - jmp 11b - -12: movl PSHARED(%r12), %esi -#if MUTEX == 0 - movq %r12, %rdi -#else - leaq MUTEX(%r12), %rdi -#endif - callq __lll_lock_wait - jmp 13b - -16: movq $-ETIMEDOUT, %rdx - jmp 17b - -19: movl $EINVAL, %edx - jmp 9b - cfi_endproc - .size pthread_rwlock_timedrdlock,.-pthread_rwlock_timedrdlock |