diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486')
17 files changed, 4473 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/libc-lowlevellock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/libc-lowlevellock.S new file mode 100644 index 000000000..ce8ad27aa --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/libc-lowlevellock.S @@ -0,0 +1,20 @@ +/* Copyright (C) 2002, 2003, 2007 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 "lowlevellock.S" diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S new file mode 100644 index 000000000..00f8b56f9 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S @@ -0,0 +1,459 @@ +/* Copyright (C) 2002-2004, 2006, 2007, 2009 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 <pthread-errnos.h> +#include <bits/kernel-features.h> +#include <lowlevellock.h> +#include <tcb-offsets.h> + + .text + +#ifdef __ASSUME_PRIVATE_FUTEX +# define LOAD_PRIVATE_FUTEX_WAIT(reg) \ + movl $(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), reg +# define LOAD_PRIVATE_FUTEX_WAKE(reg) \ + movl $(FUTEX_WAKE | FUTEX_PRIVATE_FLAG), reg +# define LOAD_FUTEX_WAIT(reg) \ + xorl $(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), reg +# define LOAD_FUTEX_WAIT_ABS(reg) \ + xorl $(FUTEX_WAIT_BITSET | FUTEX_PRIVATE_FLAG | FUTEX_CLOCK_REALTIME), reg +# define LOAD_FUTEX_WAKE(reg) \ + xorl $(FUTEX_WAKE | FUTEX_PRIVATE_FLAG), reg +#else +# if FUTEX_WAIT == 0 +# define LOAD_PRIVATE_FUTEX_WAIT(reg) \ + movl %gs:PRIVATE_FUTEX, reg +# else +# define LOAD_PRIVATE_FUTEX_WAIT(reg) \ + movl %gs:PRIVATE_FUTEX, reg ; \ + orl $FUTEX_WAIT, reg +# endif +# define LOAD_PRIVATE_FUTEX_WAKE(reg) \ + movl %gs:PRIVATE_FUTEX, reg ; \ + orl $FUTEX_WAKE, reg +# if FUTEX_WAIT == 0 +# define LOAD_FUTEX_WAIT(reg) \ + xorl $FUTEX_PRIVATE_FLAG, reg ; \ + andl %gs:PRIVATE_FUTEX, reg +# else +# define LOAD_FUTEX_WAIT(reg) \ + xorl $FUTEX_PRIVATE_FLAG, reg ; \ + andl %gs:PRIVATE_FUTEX, reg ; \ + orl $FUTEX_WAIT, reg +# endif +# define LOAD_FUTEX_WAIT_ABS(reg) \ + xorl $FUTEX_PRIVATE_FLAG, reg ; \ + andl %gs:PRIVATE_FUTEX, reg ; \ + orl $FUTEX_WAIT_BITSET | FUTEX_CLOCK_REALTIME, reg +# define LOAD_FUTEX_WAKE(reg) \ + xorl $FUTEX_PRIVATE_FLAG, reg ; \ + andl %gs:PRIVATE_FUTEX, reg ; \ + orl $FUTEX_WAKE, reg +#endif + + .globl __lll_lock_wait_private + .type __lll_lock_wait_private,@function + .hidden __lll_lock_wait_private + .align 16 +__lll_lock_wait_private: + cfi_startproc + pushl %edx + cfi_adjust_cfa_offset(4) + pushl %ebx + cfi_adjust_cfa_offset(4) + pushl %esi + cfi_adjust_cfa_offset(4) + cfi_offset(%edx, -8) + cfi_offset(%ebx, -12) + cfi_offset(%esi, -16) + + movl $2, %edx + movl %ecx, %ebx + xorl %esi, %esi /* No timeout. */ + LOAD_PRIVATE_FUTEX_WAIT (%ecx) + + cmpl %edx, %eax /* NB: %edx == 2 */ + jne 2f + +1: movl $SYS_futex, %eax + ENTER_KERNEL + +2: movl %edx, %eax + xchgl %eax, (%ebx) /* NB: lock is implied */ + + testl %eax, %eax + jnz 1b + + popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + popl %edx + cfi_adjust_cfa_offset(-4) + cfi_restore(%edx) + ret + cfi_endproc + .size __lll_lock_wait_private,.-__lll_lock_wait_private + +#ifdef NOT_IN_libc + .globl __lll_lock_wait + .type __lll_lock_wait,@function + .hidden __lll_lock_wait + .align 16 +__lll_lock_wait: + cfi_startproc + pushl %edx + cfi_adjust_cfa_offset(4) + pushl %ebx + cfi_adjust_cfa_offset(4) + pushl %esi + cfi_adjust_cfa_offset(4) + cfi_offset(%edx, -8) + cfi_offset(%ebx, -12) + cfi_offset(%esi, -16) + + movl %edx, %ebx + movl $2, %edx + xorl %esi, %esi /* No timeout. */ + LOAD_FUTEX_WAIT (%ecx) + + cmpl %edx, %eax /* NB: %edx == 2 */ + jne 2f + +1: movl $SYS_futex, %eax + ENTER_KERNEL + +2: movl %edx, %eax + xchgl %eax, (%ebx) /* NB: lock is implied */ + + testl %eax, %eax + jnz 1b + + popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + popl %edx + cfi_adjust_cfa_offset(-4) + cfi_restore(%edx) + ret + cfi_endproc + .size __lll_lock_wait,.-__lll_lock_wait + + /* %ecx: futex + %esi: flags + %edx: timeout + %eax: futex value + */ + .globl __lll_timedlock_wait + .type __lll_timedlock_wait,@function + .hidden __lll_timedlock_wait + .align 16 +__lll_timedlock_wait: + cfi_startproc + pushl %ebp + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebp, 0) + pushl %ebx + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebx, 0) + +# ifndef __ASSUME_FUTEX_CLOCK_REALTIME +# ifdef __PIC__ + LOAD_PIC_REG (bx) + cmpl $0, __have_futex_clock_realtime@GOTOFF(%ebx) +# else + cmpl $0, __have_futex_clock_realtime +# endif + je .Lreltmo +# endif + + movl %ecx, %ebx + movl %esi, %ecx + movl %edx, %esi + movl $0xffffffff, %ebp + LOAD_FUTEX_WAIT_ABS (%ecx) + + movl $2, %edx + cmpl %edx, %eax + jne 2f + +1: movl $SYS_futex, %eax + movl $2, %edx + ENTER_KERNEL + +2: xchgl %edx, (%ebx) /* NB: lock is implied */ + + testl %edx, %edx + jz 3f + + cmpl $-ETIMEDOUT, %eax + je 4f + cmpl $-EINVAL, %eax + jne 1b +4: movl %eax, %edx + negl %edx + +3: movl %edx, %eax +7: popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + popl %ebp + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebp) + ret + +# ifndef __ASSUME_FUTEX_CLOCK_REALTIME +.Lreltmo: + /* Check for a valid timeout value. */ + cmpl $1000000000, 4(%edx) + jae 3f + + pushl %esi + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%esi, 0) + pushl %edi + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%edi, 0) + + /* Stack frame for the timespec and timeval structs. */ + subl $8, %esp + cfi_adjust_cfa_offset(8) + + movl %ecx, %ebp + movl %edx, %edi + + movl $2, %edx + xchgl %edx, (%ebp) + + test %edx, %edx + je 6f + +1: + /* Get current time. */ + movl %esp, %ebx + xorl %ecx, %ecx + movl $__NR_gettimeofday, %eax + ENTER_KERNEL + + /* Compute relative timeout. */ + movl 4(%esp), %eax + movl $1000, %edx + mul %edx /* Milli seconds to nano seconds. */ + movl (%edi), %ecx + movl 4(%edi), %edx + subl (%esp), %ecx + subl %eax, %edx + jns 4f + addl $1000000000, %edx + subl $1, %ecx +4: testl %ecx, %ecx + js 2f /* Time is already up. */ + + /* Store relative timeout. */ + movl %ecx, (%esp) + movl %edx, 4(%esp) + + /* Futex call. */ + movl %ebp, %ebx + movl $2, %edx + movl %esp, %esi + movl 16(%esp), %ecx + LOAD_FUTEX_WAIT (%ecx) + movl $SYS_futex, %eax + ENTER_KERNEL + + /* NB: %edx == 2 */ + xchgl %edx, (%ebp) + + testl %edx, %edx + je 6f + + cmpl $-ETIMEDOUT, %eax + jne 1b +2: movl $ETIMEDOUT, %edx + +6: addl $8, %esp + cfi_adjust_cfa_offset(-8) + popl %edi + cfi_adjust_cfa_offset(-4) + cfi_restore(%edi) + popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) +7: popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + popl %ebp + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebp) + movl %edx, %eax + ret + +3: movl $EINVAL, %edx + jmp 7b +# endif + cfi_endproc + .size __lll_timedlock_wait,.-__lll_timedlock_wait +#endif + + .globl __lll_unlock_wake_private + .type __lll_unlock_wake_private,@function + .hidden __lll_unlock_wake_private + .align 16 +__lll_unlock_wake_private: + cfi_startproc + pushl %ebx + cfi_adjust_cfa_offset(4) + pushl %ecx + cfi_adjust_cfa_offset(4) + pushl %edx + cfi_adjust_cfa_offset(4) + cfi_offset(%ebx, -8) + cfi_offset(%ecx, -12) + cfi_offset(%edx, -16) + + movl %eax, %ebx + movl $0, (%eax) + LOAD_PRIVATE_FUTEX_WAKE (%ecx) + movl $1, %edx /* Wake one thread. */ + movl $SYS_futex, %eax + ENTER_KERNEL + + popl %edx + cfi_adjust_cfa_offset(-4) + cfi_restore(%edx) + popl %ecx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ecx) + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + ret + cfi_endproc + .size __lll_unlock_wake_private,.-__lll_unlock_wake_private + +#ifdef NOT_IN_libc + .globl __lll_unlock_wake + .type __lll_unlock_wake,@function + .hidden __lll_unlock_wake + .align 16 +__lll_unlock_wake: + cfi_startproc + pushl %ebx + cfi_adjust_cfa_offset(4) + pushl %ecx + cfi_adjust_cfa_offset(4) + pushl %edx + cfi_adjust_cfa_offset(4) + cfi_offset(%ebx, -8) + cfi_offset(%ecx, -12) + cfi_offset(%edx, -16) + + movl %eax, %ebx + movl $0, (%eax) + LOAD_FUTEX_WAKE (%ecx) + movl $1, %edx /* Wake one thread. */ + movl $SYS_futex, %eax + ENTER_KERNEL + + popl %edx + cfi_adjust_cfa_offset(-4) + cfi_restore(%edx) + popl %ecx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ecx) + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + ret + cfi_endproc + .size __lll_unlock_wake,.-__lll_unlock_wake + + .globl __lll_timedwait_tid + .type __lll_timedwait_tid,@function + .hidden __lll_timedwait_tid + .align 16 +__lll_timedwait_tid: + pushl %edi + pushl %esi + pushl %ebx + pushl %ebp + + movl %eax, %ebp + movl %edx, %edi + subl $8, %esp + + /* Get current time. */ +2: movl %esp, %ebx + xorl %ecx, %ecx + movl $__NR_gettimeofday, %eax + ENTER_KERNEL + + /* Compute relative timeout. */ + movl 4(%esp), %eax + movl $1000, %edx + mul %edx /* Milli seconds to nano seconds. */ + movl (%edi), %ecx + movl 4(%edi), %edx + subl (%esp), %ecx + subl %eax, %edx + jns 5f + addl $1000000000, %edx + subl $1, %ecx +5: testl %ecx, %ecx + js 6f /* Time is already up. */ + + movl %ecx, (%esp) /* Store relative timeout. */ + movl %edx, 4(%esp) + + movl (%ebp), %edx + testl %edx, %edx + jz 4f + + movl %esp, %esi + /* XXX The kernel so far uses global futex for the wakeup at + all times. */ + xorl %ecx, %ecx /* movl $FUTEX_WAIT, %ecx */ + movl %ebp, %ebx + movl $SYS_futex, %eax + ENTER_KERNEL + + cmpl $0, (%ebx) + jne 1f +4: xorl %eax, %eax + +3: addl $8, %esp + popl %ebp + popl %ebx + popl %esi + popl %edi + ret + +1: cmpl $-ETIMEDOUT, %eax + jne 2b +6: movl $ETIMEDOUT, %eax + jmp 3b + .size __lll_timedwait_tid,.-__lll_timedwait_tid +#endif diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrobustlock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrobustlock.S new file mode 100644 index 000000000..1d038001c --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/lowlevelrobustlock.S @@ -0,0 +1,234 @@ +/* Copyright (C) 2002, 2003, 2004, 2006, 2007 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 <pthread-errnos.h> +#include <lowlevellock.h> +#include <lowlevelrobustlock.h> +#include <bits/kernel-features.h> +#include <tls.h> + + .text + +#define FUTEX_WAITERS 0x80000000 +#define FUTEX_OWNER_DIED 0x40000000 + +#ifdef __ASSUME_PRIVATE_FUTEX +# define LOAD_FUTEX_WAIT(reg) \ + xorl $(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), reg +#else +# if FUTEX_WAIT == 0 +# define LOAD_FUTEX_WAIT(reg) \ + xorl $FUTEX_PRIVATE_FLAG, reg ; \ + andl %gs:PRIVATE_FUTEX, reg +# else +# define LOAD_FUTEX_WAIT(reg) \ + xorl $FUTEX_PRIVATE_FLAG, reg ; \ + andl %gs:PRIVATE_FUTEX, reg ; \ + orl $FUTEX_WAIT, reg +# endif +#endif + + .globl __lll_robust_lock_wait + .type __lll_robust_lock_wait,@function + .hidden __lll_robust_lock_wait + .align 16 +__lll_robust_lock_wait: + cfi_startproc + pushl %edx + cfi_adjust_cfa_offset(4) + pushl %ebx + cfi_adjust_cfa_offset(4) + pushl %esi + cfi_adjust_cfa_offset(4) + cfi_offset(%edx, -8) + cfi_offset(%ebx, -12) + cfi_offset(%esi, -16) + + movl %edx, %ebx + xorl %esi, %esi /* No timeout. */ + LOAD_FUTEX_WAIT (%ecx) + +4: movl %eax, %edx + orl $FUTEX_WAITERS, %edx + + testl $FUTEX_OWNER_DIED, %eax + jnz 3f + + cmpl %edx, %eax /* NB: %edx == 2 */ + je 1f + + LOCK + cmpxchgl %edx, (%ebx) + jnz 2f + +1: movl $SYS_futex, %eax + ENTER_KERNEL + + movl (%ebx), %eax + +2: test %eax, %eax + jne 4b + + movl %gs:TID, %edx + orl $FUTEX_WAITERS, %edx + LOCK + cmpxchgl %edx, (%ebx) + jnz 4b + /* NB: %eax == 0 */ + +3: popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + popl %edx + cfi_adjust_cfa_offset(-4) + cfi_restore(%edx) + ret + cfi_endproc + .size __lll_robust_lock_wait,.-__lll_robust_lock_wait + + + .globl __lll_robust_timedlock_wait + .type __lll_robust_timedlock_wait,@function + .hidden __lll_robust_timedlock_wait + .align 16 +__lll_robust_timedlock_wait: + cfi_startproc + /* Check for a valid timeout value. */ + cmpl $1000000000, 4(%edx) + jae 3f + + pushl %edi + cfi_adjust_cfa_offset(4) + pushl %esi + cfi_adjust_cfa_offset(4) + pushl %ebx + cfi_adjust_cfa_offset(4) + pushl %ebp + cfi_adjust_cfa_offset(4) + cfi_offset(%edi, -8) + cfi_offset(%esi, -12) + cfi_offset(%ebx, -16) + cfi_offset(%ebp, -20) + + /* Stack frame for the timespec and timeval structs. */ + subl $12, %esp + cfi_adjust_cfa_offset(12) + + movl %ecx, %ebp + movl %edx, %edi + +1: movl %eax, 8(%esp) + + /* Get current time. */ + movl %esp, %ebx + xorl %ecx, %ecx + movl $__NR_gettimeofday, %eax + ENTER_KERNEL + + /* Compute relative timeout. */ + movl 4(%esp), %eax + movl $1000, %edx + mul %edx /* Milli seconds to nano seconds. */ + movl (%edi), %ecx + movl 4(%edi), %edx + subl (%esp), %ecx + subl %eax, %edx + jns 4f + addl $1000000000, %edx + subl $1, %ecx +4: testl %ecx, %ecx + js 8f /* Time is already up. */ + + /* Store relative timeout. */ + movl %ecx, (%esp) + movl %edx, 4(%esp) + + movl %ebp, %ebx + + movl 8(%esp), %edx + movl %edx, %eax + orl $FUTEX_WAITERS, %edx + + testl $FUTEX_OWNER_DIED, %eax + jnz 6f + + cmpl %eax, %edx + je 2f + + LOCK + cmpxchgl %edx, (%ebx) + movl $0, %ecx /* Must use mov to avoid changing cc. */ + jnz 5f + +2: + /* Futex call. */ + movl %esp, %esi + movl 20(%esp), %ecx + LOAD_FUTEX_WAIT (%ecx) + movl $SYS_futex, %eax + ENTER_KERNEL + movl %eax, %ecx + + movl (%ebx), %eax + +5: testl %eax, %eax + jne 7f + + movl %gs:TID, %edx + orl $FUTEX_WAITERS, %edx + LOCK + cmpxchgl %edx, (%ebx) + jnz 7f + +6: addl $12, %esp + cfi_adjust_cfa_offset(-12) + popl %ebp + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebp) + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) + popl %edi + cfi_adjust_cfa_offset(-4) + cfi_restore(%edi) + ret + +3: movl $EINVAL, %eax + ret + + cfi_adjust_cfa_offset(28) + cfi_offset(%edi, -8) + cfi_offset(%esi, -12) + cfi_offset(%ebx, -16) + cfi_offset(%ebp, -20) + /* Check whether the time expired. */ +7: cmpl $-ETIMEDOUT, %ecx + jne 1b + +8: movl $ETIMEDOUT, %eax + jmp 6b + cfi_endproc + .size __lll_robust_timedlock_wait,.-__lll_robust_timedlock_wait diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S new file mode 100644 index 000000000..040d7f8c3 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S @@ -0,0 +1,187 @@ +/* Copyright (C) 2002, 2003, 2004, 2007 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 <lowlevellock.h> +#include <lowlevelbarrier.h> + + .text + + .globl pthread_barrier_wait + .type pthread_barrier_wait,@function + .align 16 +pthread_barrier_wait: + cfi_startproc + pushl %ebx + cfi_adjust_cfa_offset(4) + cfi_offset(%ebx, -8) + + movl 8(%esp), %ebx + + /* Get the mutex. */ + movl $1, %edx + xorl %eax, %eax + LOCK + cmpxchgl %edx, MUTEX(%ebx) + jnz 1f + + /* One less waiter. If this was the last one needed wake + everybody. */ +2: subl $1, LEFT(%ebx) + je 3f + + /* There are more threads to come. */ + pushl %esi + cfi_adjust_cfa_offset(4) + cfi_offset(%esi, -12) + +#if CURR_EVENT == 0 + movl (%ebx), %edx +#else + movl CURR_EVENT(%ebx), %edx +#endif + + /* Release the mutex. */ + LOCK + subl $1, MUTEX(%ebx) + jne 6f + + /* Wait for the remaining threads. The call will return immediately + if the CURR_EVENT memory has meanwhile been changed. */ +7: +#if FUTEX_WAIT == 0 + movl PRIVATE(%ebx), %ecx +#else + movl $FUTEX_WAIT, %ecx + orl PRIVATE(%ebx), %ecx +#endif + xorl %esi, %esi +8: movl $SYS_futex, %eax + ENTER_KERNEL + + /* Don't return on spurious wakeups. The syscall does not change + any register except %eax so there is no need to reload any of + them. */ +#if CURR_EVENT == 0 + cmpl %edx, (%ebx) +#else + cmpl %edx, CURR_EVENT(%ebx) +#endif + je 8b + + /* Increment LEFT. If this brings the count back to the + initial count unlock the object. */ + movl $1, %edx + movl INIT_COUNT(%ebx), %ecx + LOCK + xaddl %edx, LEFT(%ebx) + subl $1, %ecx + cmpl %ecx, %edx + jne 10f + + /* Release the mutex. We cannot release the lock before + waking the waiting threads since otherwise a new thread might + arrive and gets waken up, too. */ + LOCK + subl $1, MUTEX(%ebx) + jne 9f + + /* Note: %esi is still zero. */ +10: movl %esi, %eax /* != PTHREAD_BARRIER_SERIAL_THREAD */ + + popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + ret + + cfi_adjust_cfa_offset(4) + cfi_offset(%ebx, -8) + + /* The necessary number of threads arrived. */ +3: +#if CURR_EVENT == 0 + addl $1, (%ebx) +#else + addl $1, CURR_EVENT(%ebx) +#endif + + /* Wake up all waiters. The count is a signed number in the kernel + so 0x7fffffff is the highest value. */ + movl $0x7fffffff, %edx + movl $FUTEX_WAKE, %ecx + orl PRIVATE(%ebx), %ecx + movl $SYS_futex, %eax + ENTER_KERNEL + + /* Increment LEFT. If this brings the count back to the + initial count unlock the object. */ + movl $1, %edx + movl INIT_COUNT(%ebx), %ecx + LOCK + xaddl %edx, LEFT(%ebx) + subl $1, %ecx + cmpl %ecx, %edx + jne 5f + + /* Release the mutex. We cannot release the lock before + waking the waiting threads since otherwise a new thread might + arrive and gets waken up, too. */ + LOCK + subl $1, MUTEX(%ebx) + jne 4f + +5: orl $-1, %eax /* == PTHREAD_BARRIER_SERIAL_THREAD */ + + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + ret + + cfi_adjust_cfa_offset(4) + cfi_offset(%ebx, -8) +1: movl PRIVATE(%ebx), %ecx + leal MUTEX(%ebx), %edx + xorl $LLL_SHARED, %ecx + call __lll_lock_wait + jmp 2b + +4: movl PRIVATE(%ebx), %ecx + leal MUTEX(%ebx), %eax + xorl $LLL_SHARED, %ecx + call __lll_unlock_wake + jmp 5b + + cfi_adjust_cfa_offset(4) + cfi_offset(%esi, -12) +6: movl PRIVATE(%ebx), %ecx + leal MUTEX(%ebx), %eax + xorl $LLL_SHARED, %ecx + call __lll_unlock_wake + jmp 7b + +9: movl PRIVATE(%ebx), %ecx + leal MUTEX(%ebx), %eax + xorl $LLL_SHARED, %ecx + call __lll_unlock_wake + jmp 10b + cfi_endproc + .size pthread_barrier_wait,.-pthread_barrier_wait diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S new file mode 100644 index 000000000..0413cc13b --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S @@ -0,0 +1,238 @@ +/* Copyright (C) 2002,2003,2004,2006,2007,2009 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 <lowlevellock.h> +#include <lowlevelcond.h> +#include <bits/kernel-features.h> +#include <pthread-pi-defines.h> +#include <pthread-errnos.h> +#include <tls.h> + + .text + + /* int pthread_cond_broadcast (pthread_cond_t *cond) */ + .globl __pthread_cond_broadcast + .type __pthread_cond_broadcast, @function + .align 16 +__pthread_cond_broadcast: + cfi_startproc + pushl %ebx + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebx, 0) + pushl %esi + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%esi, 0) + pushl %edi + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%edi, 0) + pushl %ebp + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebp, 0) + cfi_remember_state + + movl 20(%esp), %ebx + + /* Get internal lock. */ + movl $1, %edx + xorl %eax, %eax + LOCK +#if cond_lock == 0 + cmpxchgl %edx, (%ebx) +#else + cmpxchgl %edx, cond_lock(%ebx) +#endif + jnz 1f + +2: addl $cond_futex, %ebx + movl total_seq+4-cond_futex(%ebx), %eax + movl total_seq-cond_futex(%ebx), %ebp + cmpl wakeup_seq+4-cond_futex(%ebx), %eax + ja 3f + jb 4f + cmpl wakeup_seq-cond_futex(%ebx), %ebp + jna 4f + + /* Cause all currently waiting threads to recognize they are + woken up. */ +3: movl %ebp, wakeup_seq-cond_futex(%ebx) + movl %eax, wakeup_seq-cond_futex+4(%ebx) + movl %ebp, woken_seq-cond_futex(%ebx) + movl %eax, woken_seq-cond_futex+4(%ebx) + addl %ebp, %ebp + addl $1, broadcast_seq-cond_futex(%ebx) + movl %ebp, (%ebx) + + /* Get the address of the mutex used. */ + movl dep_mutex-cond_futex(%ebx), %edi + + /* Unlock. */ + LOCK + subl $1, cond_lock-cond_futex(%ebx) + jne 7f + + /* Don't use requeue for pshared condvars. */ +8: cmpl $-1, %edi + je 9f + + /* Do not use requeue for pshared condvars. */ + testl $PS_BIT, MUTEX_KIND(%edi) + jne 9f + + /* Requeue to a non-robust PI mutex if the PI bit is set and + the robust bit is not set. */ + movl MUTEX_KIND(%edi), %eax + andl $(ROBUST_BIT|PI_BIT), %eax + cmpl $PI_BIT, %eax + je 81f + + /* Wake up all threads. */ +#ifdef __ASSUME_PRIVATE_FUTEX + movl $(FUTEX_CMP_REQUEUE|FUTEX_PRIVATE_FLAG), %ecx +#else + movl %gs:PRIVATE_FUTEX, %ecx + orl $FUTEX_CMP_REQUEUE, %ecx +#endif + movl $SYS_futex, %eax + movl $0x7fffffff, %esi + movl $1, %edx + /* Get the address of the futex involved. */ +# if MUTEX_FUTEX != 0 + addl $MUTEX_FUTEX, %edi +# endif +/* FIXME: Until Ingo fixes 4G/4G vDSO, 6 arg syscalls are broken for sysenter. + ENTER_KERNEL */ + int $0x80 + + /* For any kind of error, which mainly is EAGAIN, we try again + with WAKE. The general test also covers running on old + kernels. */ + cmpl $0xfffff001, %eax + jae 9f + +6: xorl %eax, %eax + popl %ebp + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebp) + popl %edi + cfi_adjust_cfa_offset(-4) + cfi_restore(%edi) + popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + ret + + cfi_restore_state + +81: movl $(FUTEX_CMP_REQUEUE_PI|FUTEX_PRIVATE_FLAG), %ecx + movl $SYS_futex, %eax + movl $0x7fffffff, %esi + movl $1, %edx + /* Get the address of the futex involved. */ +# if MUTEX_FUTEX != 0 + addl $MUTEX_FUTEX, %edi +# endif + int $0x80 + + /* For any kind of error, which mainly is EAGAIN, we try again + with WAKE. The general test also covers running on old + kernels. */ + cmpl $0xfffff001, %eax + jb 6b + jmp 9f + + /* Initial locking failed. */ +1: +#if cond_lock == 0 + movl %ebx, %edx +#else + leal cond_lock(%ebx), %edx +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_lock_wait + jmp 2b + + .align 16 + /* Unlock. */ +4: LOCK + subl $1, cond_lock-cond_futex(%ebx) + je 6b + + /* Unlock in loop requires wakeup. */ +5: leal cond_lock-cond_futex(%ebx), %eax +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_futex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake + jmp 6b + + /* Unlock in loop requires wakeup. */ +7: leal cond_lock-cond_futex(%ebx), %eax +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_futex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake + jmp 8b + +9: /* The futex requeue functionality is not available. */ + movl $0x7fffffff, %edx +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_futex(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE, %ecx + movl $SYS_futex, %eax + ENTER_KERNEL + jmp 6b + cfi_endproc + .size __pthread_cond_broadcast, .-__pthread_cond_broadcast +weak_alias(__pthread_cond_broadcast, pthread_cond_broadcast) diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S new file mode 100644 index 000000000..2f3c9bc35 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S @@ -0,0 +1,215 @@ +/* Copyright (C) 2002,2003,2004,2005,2007,2009 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 <lowlevellock.h> +#include <lowlevelcond.h> +#include <bits/kernel-features.h> +#include <pthread-pi-defines.h> +#include <pthread-errnos.h> +#include <tls.h> + + + .text + + /* int pthread_cond_signal (pthread_cond_t *cond) */ + .globl __pthread_cond_signal + .type __pthread_cond_signal, @function + .align 16 +__pthread_cond_signal: + + cfi_startproc + pushl %ebx + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebx, 0) + pushl %edi + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%edi, 0) + cfi_remember_state + + movl 12(%esp), %edi + + /* Get internal lock. */ + movl $1, %edx + xorl %eax, %eax + LOCK +#if cond_lock == 0 + cmpxchgl %edx, (%edi) +#else + cmpxchgl %edx, cond_lock(%edi) +#endif + jnz 1f + +2: leal cond_futex(%edi), %ebx + movl total_seq+4(%edi), %eax + movl total_seq(%edi), %ecx + cmpl wakeup_seq+4(%edi), %eax +#if cond_lock != 0 + /* Must use leal to preserve the flags. */ + leal cond_lock(%edi), %edi +#endif + ja 3f + jb 4f + cmpl wakeup_seq-cond_futex(%ebx), %ecx + jbe 4f + + /* Bump the wakeup number. */ +3: addl $1, wakeup_seq-cond_futex(%ebx) + adcl $0, wakeup_seq-cond_futex+4(%ebx) + addl $1, (%ebx) + + /* Wake up one thread. */ + pushl %esi + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%esi, 0) + pushl %ebp + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebp, 0) + +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_futex(%ebx) + sete %cl + je 8f + + movl dep_mutex-cond_futex(%ebx), %edx + /* Requeue to a non-robust PI mutex if the PI bit is set and + the robust bit is not set. */ + movl MUTEX_KIND(%edx), %eax + andl $(ROBUST_BIT|PI_BIT), %eax + cmpl $PI_BIT, %eax + je 9f + +8: subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE_OP, %ecx + movl $SYS_futex, %eax + movl $1, %edx + movl $1, %esi + movl $FUTEX_OP_CLEAR_WAKE_IF_GT_ONE, %ebp + /* FIXME: Until Ingo fixes 4G/4G vDSO, 6 arg syscalls are broken for + sysenter. + ENTER_KERNEL */ + int $0x80 + popl %ebp + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebp) + popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) + + /* For any kind of error, we try again with WAKE. + The general test also covers running on old kernels. */ + cmpl $-4095, %eax + jae 7f + +6: xorl %eax, %eax + popl %edi + cfi_adjust_cfa_offset(-4) + cfi_restore(%edi) + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + ret + + cfi_restore_state + +9: movl $(FUTEX_CMP_REQUEUE_PI|FUTEX_PRIVATE_FLAG), %ecx + movl $SYS_futex, %eax + movl $1, %edx + xorl %esi, %esi + movl dep_mutex-cond_futex(%ebx), %edi + movl (%ebx), %ebp + /* FIXME: Until Ingo fixes 4G/4G vDSO, 6 arg syscalls are broken for + sysenter. + ENTER_KERNEL */ + int $0x80 + popl %ebp + popl %esi + + leal -cond_futex(%ebx), %edi + + /* For any kind of error, we try again with WAKE. + The general test also covers running on old kernels. */ + cmpl $-4095, %eax + jb 4f + +7: +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + orl $FUTEX_WAKE, %ecx + + xorl $(FUTEX_WAKE ^ FUTEX_WAKE_OP), %ecx + movl $SYS_futex, %eax + /* %edx should be 1 already from $FUTEX_WAKE_OP syscall. + movl $1, %edx */ + ENTER_KERNEL + + /* Unlock. Note that at this point %edi always points to + cond_lock. */ +4: LOCK + subl $1, (%edi) + je 6b + + /* Unlock in loop requires wakeup. */ +5: movl %edi, %eax +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_futex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake + jmp 6b + + /* Initial locking failed. */ +1: +#if cond_lock == 0 + movl %edi, %edx +#else + leal cond_lock(%edi), %edx +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%edi) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_lock_wait + jmp 2b + + cfi_endproc + .size __pthread_cond_signal, .-__pthread_cond_signal +weak_alias(__pthread_cond_signal, pthread_cond_signal) diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S new file mode 100644 index 000000000..c56dd7716 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S @@ -0,0 +1,693 @@ +/* Copyright (C) 2002-2004,2006-2007,2009,2010 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 <lowlevellock.h> +#include <lowlevelcond.h> +#include <pthread-errnos.h> +#include <pthread-pi-defines.h> +#include <bits/kernel-features.h> + + + .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 + + pushl %ebp + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebp, 0) + pushl %edi + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%edi, 0) + pushl %esi + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%esi, 0) + pushl %ebx + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebx, 0) + + movl 20(%esp), %ebx + movl 28(%esp), %ebp + + cmpl $1000000000, 4(%ebp) + movl $EINVAL, %eax + jae 18f + + /* Get internal lock. */ + movl $1, %edx + xorl %eax, %eax + LOCK +#if cond_lock == 0 + cmpxchgl %edx, (%ebx) +#else + cmpxchgl %edx, cond_lock(%ebx) +#endif + jnz 1f + + /* Store the reference to the mutex. If there is already a + different value in there this is a bad user bug. */ +2: cmpl $-1, dep_mutex(%ebx) + movl 24(%esp), %eax + je 17f + movl %eax, dep_mutex(%ebx) + + /* Unlock the mutex. */ +17: xorl %edx, %edx + call __pthread_mutex_unlock_usercnt + + testl %eax, %eax + jne 16f + + addl $1, total_seq(%ebx) + adcl $0, total_seq+4(%ebx) + addl $1, cond_futex(%ebx) + addl $(1 << nwaiters_shift), cond_nwaiters(%ebx) + +#define FRAME_SIZE 32 + subl $FRAME_SIZE, %esp + cfi_adjust_cfa_offset(FRAME_SIZE) + cfi_remember_state + + /* Get and store current wakeup_seq value. */ + movl wakeup_seq(%ebx), %edi + movl wakeup_seq+4(%ebx), %edx + movl broadcast_seq(%ebx), %eax + movl %edi, 12(%esp) + movl %edx, 16(%esp) + movl %eax, 20(%esp) + + /* Reset the pi-requeued flag. */ +8: movl $0, 24(%esp) + /* Get the current time. */ + movl %ebx, %edx +#ifdef __NR_clock_gettime + /* Get the clock number. */ + movl cond_nwaiters(%ebx), %ebx + andl $((1 << nwaiters_shift) - 1), %ebx + /* Only clocks 0 and 1 are allowed so far. Both are handled in the + kernel. */ + leal 4(%esp), %ecx + movl $__NR_clock_gettime, %eax + ENTER_KERNEL +# ifndef __ASSUME_POSIX_TIMERS + cmpl $-ENOSYS, %eax + je 19f +# endif + movl %edx, %ebx + + /* Compute relative timeout. */ + movl (%ebp), %ecx + movl 4(%ebp), %edx + subl 4(%esp), %ecx + subl 8(%esp), %edx +#else + /* Get the current time. */ + leal 4(%esp), %ebx + xorl %ecx, %ecx + movl $__NR_gettimeofday, %eax + ENTER_KERNEL + movl %edx, %ebx + + /* Compute relative timeout. */ + movl 8(%esp), %eax + movl $1000, %edx + mul %edx /* Milli seconds to nano seconds. */ + movl (%ebp), %ecx + movl 4(%ebp), %edx + subl 4(%esp), %ecx + subl %eax, %edx +#endif + jns 12f + addl $1000000000, %edx + subl $1, %ecx +12: testl %ecx, %ecx + movl $-ETIMEDOUT, %esi + js 6f + + /* Store relative timeout. */ +21: movl %ecx, 4(%esp) + movl %edx, 8(%esp) + + movl cond_futex(%ebx), %edi + movl %edi, 28(%esp) + + /* Unlock. */ + LOCK +#if cond_lock == 0 + subl $1, (%ebx) +#else + subl $1, cond_lock(%ebx) +#endif + jne 3f + +.LcleanupSTART: +4: call __pthread_enable_asynccancel + movl %eax, (%esp) + +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + sete %cl + je 40f + + movl dep_mutex(%ebx), %edi + /* Requeue to a non-robust PI mutex if the PI bit is set and + the robust bit is not set. */ + movl MUTEX_KIND(%edi), %eax + andl $(ROBUST_BIT|PI_BIT), %eax + cmpl $PI_BIT, %eax + jne 40f + + movl $(FUTEX_WAIT_REQUEUE_PI|FUTEX_PRIVATE_FLAG), %ecx + /* The following only works like this because we only support + two clocks, represented using a single bit. */ + testl $1, cond_nwaiters(%ebx) + /* XXX Need to implement using sete instead of a jump. */ + jne 42f + orl $FUTEX_CLOCK_REALTIME, %ecx + + /* Requeue-PI uses absolute timeout */ +42: leal (%ebp), %esi + movl 28(%esp), %edx + addl $cond_futex, %ebx + movl $SYS_futex, %eax + ENTER_KERNEL + subl $cond_futex, %ebx + movl %eax, %esi + /* Set the pi-requeued flag only if the kernel has returned 0. The + kernel does not hold the mutex on ETIMEDOUT or any other error. */ + cmpl $0, %eax + sete 24(%esp) + je 41f + + /* Normal and PI futexes dont mix. Use normal futex functions only + if the kernel does not support the PI futex functions. */ + cmpl $-ENOSYS, %eax + jne 41f + xorl %ecx, %ecx + +40: subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif +#if FUTEX_WAIT != 0 + addl $FUTEX_WAIT, %ecx +#endif + leal 4(%esp), %esi + movl 28(%esp), %edx + addl $cond_futex, %ebx +.Ladd_cond_futex: + movl $SYS_futex, %eax + ENTER_KERNEL + subl $cond_futex, %ebx +.Lsub_cond_futex: + movl %eax, %esi + +41: movl (%esp), %eax + call __pthread_disable_asynccancel +.LcleanupEND: + + /* Lock. */ + movl $1, %edx + xorl %eax, %eax + LOCK +#if cond_lock == 0 + cmpxchgl %edx, (%ebx) +#else + cmpxchgl %edx, cond_lock(%ebx) +#endif + jnz 5f + +6: movl broadcast_seq(%ebx), %eax + cmpl 20(%esp), %eax + jne 23f + + movl woken_seq(%ebx), %eax + movl woken_seq+4(%ebx), %ecx + + movl wakeup_seq(%ebx), %edi + movl wakeup_seq+4(%ebx), %edx + + cmpl 16(%esp), %edx + jne 7f + cmpl 12(%esp), %edi + je 15f + +7: cmpl %ecx, %edx + jne 9f + cmp %eax, %edi + jne 9f + +15: cmpl $-ETIMEDOUT, %esi + jne 8b + + addl $1, wakeup_seq(%ebx) + adcl $0, wakeup_seq+4(%ebx) + addl $1, cond_futex(%ebx) + movl $ETIMEDOUT, %esi + jmp 14f + +23: xorl %esi, %esi + jmp 24f + +9: xorl %esi, %esi +14: addl $1, woken_seq(%ebx) + adcl $0, woken_seq+4(%ebx) + +24: subl $(1 << nwaiters_shift), cond_nwaiters(%ebx) + + /* Wake up a thread which wants to destroy the condvar object. */ + movl total_seq(%ebx), %eax + andl total_seq+4(%ebx), %eax + cmpl $0xffffffff, %eax + jne 25f + movl cond_nwaiters(%ebx), %eax + andl $~((1 << nwaiters_shift) - 1), %eax + jne 25f + + addl $cond_nwaiters, %ebx + movl $SYS_futex, %eax +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_nwaiters(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE, %ecx + movl $1, %edx + ENTER_KERNEL + subl $cond_nwaiters, %ebx + +25: LOCK +#if cond_lock == 0 + subl $1, (%ebx) +#else + subl $1, cond_lock(%ebx) +#endif + jne 10f + +11: movl 24+FRAME_SIZE(%esp), %eax + /* With requeue_pi, the mutex lock is held in the kernel. */ + movl 24(%esp), %ecx + testl %ecx, %ecx + jnz 27f + + call __pthread_mutex_cond_lock +26: addl $FRAME_SIZE, %esp + cfi_adjust_cfa_offset(-FRAME_SIZE); + + /* We return the result of the mutex_lock operation if it failed. */ + testl %eax, %eax +#ifdef HAVE_CMOV + cmovel %esi, %eax +#else + jne 22f + movl %esi, %eax +22: +#endif + +18: popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) + popl %edi + cfi_adjust_cfa_offset(-4) + cfi_restore(%edi) + popl %ebp + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebp) + + ret + + cfi_restore_state + +27: call __pthread_mutex_cond_lock_adjust + xorl %eax, %eax + jmp 26b + + cfi_adjust_cfa_offset(-FRAME_SIZE); + /* Initial locking failed. */ +1: +#if cond_lock == 0 + movl %ebx, %edx +#else + leal cond_lock(%ebx), %edx +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_lock_wait + jmp 2b + + /* The initial unlocking of the mutex failed. */ +16: + LOCK +#if cond_lock == 0 + subl $1, (%ebx) +#else + subl $1, cond_lock(%ebx) +#endif + jne 18b + + movl %eax, %esi +#if cond_lock == 0 + movl %ebx, %eax +#else + leal cond_lock(%ebx), %eax +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake + + movl %esi, %eax + jmp 18b + + cfi_adjust_cfa_offset(FRAME_SIZE) + + /* Unlock in loop requires wakeup. */ +3: +#if cond_lock == 0 + movl %ebx, %eax +#else + leal cond_lock(%ebx), %eax +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake + jmp 4b + + /* Locking in loop failed. */ +5: +#if cond_lock == 0 + movl %ebx, %edx +#else + leal cond_lock(%ebx), %edx +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_lock_wait + jmp 6b + + /* Unlock after loop requires wakeup. */ +10: +#if cond_lock == 0 + movl %ebx, %eax +#else + leal cond_lock(%ebx), %eax +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake + jmp 11b + +#if defined __NR_clock_gettime && !defined __ASSUME_POSIX_TIMERS + /* clock_gettime not available. */ +19: leal 4(%esp), %ebx + xorl %ecx, %ecx + movl $__NR_gettimeofday, %eax + ENTER_KERNEL + movl %edx, %ebx + + /* Compute relative timeout. */ + movl 8(%esp), %eax + movl $1000, %edx + mul %edx /* Milli seconds to nano seconds. */ + movl (%ebp), %ecx + movl 4(%ebp), %edx + subl 4(%esp), %ecx + subl %eax, %edx + jns 20f + addl $1000000000, %edx + subl $1, %ecx +20: testl %ecx, %ecx + movl $-ETIMEDOUT, %esi + js 6b + jmp 21b +#endif + .size __pthread_cond_timedwait, .-__pthread_cond_timedwait +weak_alias(__pthread_cond_timedwait, pthread_cond_timedwait) + + + .type __condvar_tw_cleanup2, @function +__condvar_tw_cleanup2: + subl $cond_futex, %ebx + .size __condvar_tw_cleanup2, .-__condvar_tw_cleanup2 + .type __condvar_tw_cleanup, @function +__condvar_tw_cleanup: + movl %eax, %esi + + /* Get internal lock. */ + movl $1, %edx + xorl %eax, %eax + LOCK +#if cond_lock == 0 + cmpxchgl %edx, (%ebx) +#else + cmpxchgl %edx, cond_lock(%ebx) +#endif + jz 1f + +#if cond_lock == 0 + movl %ebx, %edx +#else + leal cond_lock(%ebx), %edx +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_lock_wait + +1: movl broadcast_seq(%ebx), %eax + cmpl 20(%esp), %eax + 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. */ + movl total_seq(%ebx), %eax + movl total_seq+4(%ebx), %edi + cmpl wakeup_seq+4(%ebx), %edi + jb 6f + ja 7f + cmpl wakeup_seq(%ebx), %eax + jbe 7f + +6: addl $1, wakeup_seq(%ebx) + adcl $0, wakeup_seq+4(%ebx) + addl $1, cond_futex(%ebx) + +7: addl $1, woken_seq(%ebx) + adcl $0, woken_seq+4(%ebx) + +3: subl $(1 << nwaiters_shift), cond_nwaiters(%ebx) + + /* Wake up a thread which wants to destroy the condvar object. */ + xorl %edi, %edi + movl total_seq(%ebx), %eax + andl total_seq+4(%ebx), %eax + cmpl $0xffffffff, %eax + jne 4f + movl cond_nwaiters(%ebx), %eax + andl $~((1 << nwaiters_shift) - 1), %eax + jne 4f + + addl $cond_nwaiters, %ebx + movl $SYS_futex, %eax +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_nwaiters(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE, %ecx + movl $1, %edx + ENTER_KERNEL + subl $cond_nwaiters, %ebx + movl $1, %edi + +4: LOCK +#if cond_lock == 0 + subl $1, (%ebx) +#else + subl $1, cond_lock(%ebx) +#endif + je 2f + +#if cond_lock == 0 + movl %ebx, %eax +#else + leal cond_lock(%ebx), %eax +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake + + /* Wake up all waiters to make sure no signal gets lost. */ +2: testl %edi, %edi + jnz 5f + addl $cond_futex, %ebx +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_futex(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE, %ecx + movl $SYS_futex, %eax + movl $0x7fffffff, %edx + ENTER_KERNEL + +5: movl 24+FRAME_SIZE(%esp), %eax + call __pthread_mutex_cond_lock + + movl %esi, (%esp) +.LcallUR: + call _Unwind_Resume + hlt +.LENDCODE: + cfi_endproc + .size __condvar_tw_cleanup, .-__condvar_tw_cleanup + + + .section .gcc_except_table,"a",@progbits +.LexceptSTART: + .byte DW_EH_PE_omit # @LPStart format (omit) + .byte DW_EH_PE_omit # @TType format (omit) + .byte DW_EH_PE_sdata4 # call-site format + # DW_EH_PE_sdata4 + .uleb128 .Lcstend-.Lcstbegin +.Lcstbegin: + .long .LcleanupSTART-.LSTARTCODE + .long .Ladd_cond_futex-.LcleanupSTART + .long __condvar_tw_cleanup-.LSTARTCODE + .uleb128 0 + .long .Ladd_cond_futex-.LSTARTCODE + .long .Lsub_cond_futex-.Ladd_cond_futex + .long __condvar_tw_cleanup2-.LSTARTCODE + .uleb128 0 + .long .Lsub_cond_futex-.LSTARTCODE + .long .LcleanupEND-.Lsub_cond_futex + .long __condvar_tw_cleanup-.LSTARTCODE + .uleb128 0 + .long .LcallUR-.LSTARTCODE + .long .LENDCODE-.LcallUR + .long 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 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 diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S new file mode 100644 index 000000000..6261805f1 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S @@ -0,0 +1,590 @@ +/* Copyright (C) 2002-2004,2006-2007,2009,2010 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 <lowlevellock.h> +#include <lowlevelcond.h> +#include <tcb-offsets.h> +#include <pthread-errnos.h> +#include <pthread-pi-defines.h> +#include <bits/kernel-features.h> + + + .text + +/* int pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex) */ + .globl __pthread_cond_wait + .type __pthread_cond_wait, @function + .align 16 +__pthread_cond_wait: +.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 + + pushl %ebp + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebp, 0) + pushl %edi + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%edi, 0) + pushl %esi + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%esi, 0) + pushl %ebx + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebx, 0) + + xorl %esi, %esi + movl 20(%esp), %ebx + + /* Get internal lock. */ + movl $1, %edx + xorl %eax, %eax + LOCK +#if cond_lock == 0 + cmpxchgl %edx, (%ebx) +#else + cmpxchgl %edx, cond_lock(%ebx) +#endif + jnz 1f + + /* Store the reference to the mutex. If there is already a + different value in there this is a bad user bug. */ +2: cmpl $-1, dep_mutex(%ebx) + movl 24(%esp), %eax + je 15f + movl %eax, dep_mutex(%ebx) + + /* Unlock the mutex. */ +15: xorl %edx, %edx + call __pthread_mutex_unlock_usercnt + + testl %eax, %eax + jne 12f + + addl $1, total_seq(%ebx) + adcl $0, total_seq+4(%ebx) + addl $1, cond_futex(%ebx) + addl $(1 << nwaiters_shift), cond_nwaiters(%ebx) + +#define FRAME_SIZE 20 + subl $FRAME_SIZE, %esp + cfi_adjust_cfa_offset(FRAME_SIZE) + cfi_remember_state + + /* Get and store current wakeup_seq value. */ + movl wakeup_seq(%ebx), %edi + movl wakeup_seq+4(%ebx), %edx + movl broadcast_seq(%ebx), %eax + movl %edi, 4(%esp) + movl %edx, 8(%esp) + movl %eax, 12(%esp) + + /* Reset the pi-requeued flag. */ +8: movl $0, 16(%esp) + movl cond_futex(%ebx), %ebp + + /* Unlock. */ + LOCK +#if cond_lock == 0 + subl $1, (%ebx) +#else + subl $1, cond_lock(%ebx) +#endif + jne 3f + +.LcleanupSTART: +4: call __pthread_enable_asynccancel + movl %eax, (%esp) + + xorl %ecx, %ecx + cmpl $-1, dep_mutex(%ebx) + sete %cl + je 18f + + movl dep_mutex(%ebx), %edi + /* Requeue to a non-robust PI mutex if the PI bit is set and + the robust bit is not set. */ + movl MUTEX_KIND(%edi), %eax + andl $(ROBUST_BIT|PI_BIT), %eax + cmpl $PI_BIT, %eax + jne 18f + + movl $(FUTEX_WAIT_REQUEUE_PI|FUTEX_PRIVATE_FLAG), %ecx + movl %ebp, %edx + xorl %esi, %esi + addl $cond_futex, %ebx + movl $SYS_futex, %eax + ENTER_KERNEL + subl $cond_futex, %ebx + /* Set the pi-requeued flag only if the kernel has returned 0. The + kernel does not hold the mutex on error. */ + cmpl $0, %eax + sete 16(%esp) + je 19f + + /* Normal and PI futexes dont mix. Use normal futex functions only + if the kernel does not support the PI futex functions. */ + cmpl $-ENOSYS, %eax + jne 19f + xorl %ecx, %ecx + +18: subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif +#if FUTEX_WAIT != 0 + addl $FUTEX_WAIT, %ecx +#endif + movl %ebp, %edx + addl $cond_futex, %ebx +.Ladd_cond_futex: + movl $SYS_futex, %eax + ENTER_KERNEL + subl $cond_futex, %ebx +.Lsub_cond_futex: + +19: movl (%esp), %eax + call __pthread_disable_asynccancel +.LcleanupEND: + + /* Lock. */ + movl $1, %edx + xorl %eax, %eax + LOCK +#if cond_lock == 0 + cmpxchgl %edx, (%ebx) +#else + cmpxchgl %edx, cond_lock(%ebx) +#endif + jnz 5f + +6: movl broadcast_seq(%ebx), %eax + cmpl 12(%esp), %eax + jne 16f + + movl woken_seq(%ebx), %eax + movl woken_seq+4(%ebx), %ecx + + movl wakeup_seq(%ebx), %edi + movl wakeup_seq+4(%ebx), %edx + + cmpl 8(%esp), %edx + jne 7f + cmpl 4(%esp), %edi + je 8b + +7: cmpl %ecx, %edx + jne 9f + cmp %eax, %edi + je 8b + +9: addl $1, woken_seq(%ebx) + adcl $0, woken_seq+4(%ebx) + + /* Unlock */ +16: subl $(1 << nwaiters_shift), cond_nwaiters(%ebx) + + /* Wake up a thread which wants to destroy the condvar object. */ + movl total_seq(%ebx), %eax + andl total_seq+4(%ebx), %eax + cmpl $0xffffffff, %eax + jne 17f + movl cond_nwaiters(%ebx), %eax + andl $~((1 << nwaiters_shift) - 1), %eax + jne 17f + + addl $cond_nwaiters, %ebx + movl $SYS_futex, %eax +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_nwaiters(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE, %ecx + movl $1, %edx + ENTER_KERNEL + subl $cond_nwaiters, %ebx + +17: LOCK +#if cond_lock == 0 + subl $1, (%ebx) +#else + subl $1, cond_lock(%ebx) +#endif + jne 10f + + /* With requeue_pi, the mutex lock is held in the kernel. */ +11: movl 24+FRAME_SIZE(%esp), %eax + movl 16(%esp), %ecx + testl %ecx, %ecx + jnz 21f + + call __pthread_mutex_cond_lock +20: addl $FRAME_SIZE, %esp + cfi_adjust_cfa_offset(-FRAME_SIZE); + +14: popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) + popl %edi + cfi_adjust_cfa_offset(-4) + cfi_restore(%edi) + popl %ebp + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebp) + + /* We return the result of the mutex_lock operation. */ + ret + + cfi_restore_state + +21: call __pthread_mutex_cond_lock_adjust + xorl %eax, %eax + jmp 20b + + cfi_adjust_cfa_offset(-FRAME_SIZE); + /* Initial locking failed. */ +1: +#if cond_lock == 0 + movl %ebx, %edx +#else + leal cond_lock(%ebx), %edx +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_lock_wait + jmp 2b + + /* The initial unlocking of the mutex failed. */ +12: + LOCK +#if cond_lock == 0 + subl $1, (%ebx) +#else + subl $1, cond_lock(%ebx) +#endif + jne 14b + + movl %eax, %esi +#if cond_lock == 0 + movl %ebx, %eax +#else + leal cond_lock(%ebx), %eax +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake + + movl %esi, %eax + jmp 14b + + cfi_adjust_cfa_offset(FRAME_SIZE) + + /* Unlock in loop requires wakeup. */ +3: +#if cond_lock == 0 + movl %ebx, %eax +#else + leal cond_lock(%ebx), %eax +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake + jmp 4b + + /* Locking in loop failed. */ +5: +#if cond_lock == 0 + movl %ebx, %edx +#else + leal cond_lock(%ebx), %edx +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_lock_wait + jmp 6b + + /* Unlock after loop requires wakeup. */ +10: +#if cond_lock == 0 + movl %ebx, %eax +#else + leal cond_lock(%ebx), %eax +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake + jmp 11b + .size __pthread_cond_wait, .-__pthread_cond_wait +weak_alias(__pthread_cond_wait, pthread_cond_wait) + + + .type __condvar_w_cleanup2, @function +__condvar_w_cleanup2: + subl $cond_futex, %ebx + .size __condvar_w_cleanup2, .-__condvar_w_cleanup2 +.LSbl4: + .type __condvar_w_cleanup, @function +__condvar_w_cleanup: + movl %eax, %esi + + /* Get internal lock. */ + movl $1, %edx + xorl %eax, %eax + LOCK +#if cond_lock == 0 + cmpxchgl %edx, (%ebx) +#else + cmpxchgl %edx, cond_lock(%ebx) +#endif + jz 1f + +#if cond_lock == 0 + movl %ebx, %edx +#else + leal cond_lock(%ebx), %edx +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_lock_wait + +1: movl broadcast_seq(%ebx), %eax + cmpl 12(%esp), %eax + 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. */ + movl total_seq(%ebx), %eax + movl total_seq+4(%ebx), %edi + cmpl wakeup_seq+4(%ebx), %edi + jb 6f + ja 7f + cmpl wakeup_seq(%ebx), %eax + jbe 7f + +6: addl $1, wakeup_seq(%ebx) + adcl $0, wakeup_seq+4(%ebx) + addl $1, cond_futex(%ebx) + +7: addl $1, woken_seq(%ebx) + adcl $0, woken_seq+4(%ebx) + +3: subl $(1 << nwaiters_shift), cond_nwaiters(%ebx) + + /* Wake up a thread which wants to destroy the condvar object. */ + xorl %edi, %edi + movl total_seq(%ebx), %eax + andl total_seq+4(%ebx), %eax + cmpl $0xffffffff, %eax + jne 4f + movl cond_nwaiters(%ebx), %eax + andl $~((1 << nwaiters_shift) - 1), %eax + jne 4f + + addl $cond_nwaiters, %ebx + movl $SYS_futex, %eax +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_nwaiters(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE, %ecx + movl $1, %edx + ENTER_KERNEL + subl $cond_nwaiters, %ebx + movl $1, %edi + +4: LOCK +#if cond_lock == 0 + subl $1, (%ebx) +#else + subl $1, cond_lock(%ebx) +#endif + je 2f + +#if cond_lock == 0 + movl %ebx, %eax +#else + leal cond_lock(%ebx), %eax +#endif +#if (LLL_SHARED-LLL_PRIVATE) > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex(%ebx) + setne %cl + subl $1, %ecx + andl $(LLL_SHARED-LLL_PRIVATE), %ecx +#if LLL_PRIVATE != 0 + addl $LLL_PRIVATE, %ecx +#endif + call __lll_unlock_wake + + /* Wake up all waiters to make sure no signal gets lost. */ +2: testl %edi, %edi + jnz 5f + addl $cond_futex, %ebx +#if FUTEX_PRIVATE_FLAG > 255 + xorl %ecx, %ecx +#endif + cmpl $-1, dep_mutex-cond_futex(%ebx) + sete %cl + subl $1, %ecx +#ifdef __ASSUME_PRIVATE_FUTEX + andl $FUTEX_PRIVATE_FLAG, %ecx +#else + andl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $FUTEX_WAKE, %ecx + movl $SYS_futex, %eax + movl $0x7fffffff, %edx + ENTER_KERNEL + +5: movl 24+FRAME_SIZE(%esp), %eax + call __pthread_mutex_cond_lock + + movl %esi, (%esp) +.LcallUR: + call _Unwind_Resume + hlt +.LENDCODE: + cfi_endproc + .size __condvar_w_cleanup, .-__condvar_w_cleanup + + + .section .gcc_except_table,"a",@progbits +.LexceptSTART: + .byte DW_EH_PE_omit # @LPStart format (omit) + .byte DW_EH_PE_omit # @TType format (omit) + .byte DW_EH_PE_sdata4 # call-site format + # DW_EH_PE_sdata4 + .uleb128 .Lcstend-.Lcstbegin +.Lcstbegin: + .long .LcleanupSTART-.LSTARTCODE + .long .Ladd_cond_futex-.LcleanupSTART + .long __condvar_w_cleanup-.LSTARTCODE + .uleb128 0 + .long .Ladd_cond_futex-.LSTARTCODE + .long .Lsub_cond_futex-.Ladd_cond_futex + .long __condvar_w_cleanup2-.LSTARTCODE + .uleb128 0 + .long .Lsub_cond_futex-.LSTARTCODE + .long .LcleanupEND-.Lsub_cond_futex + .long __condvar_w_cleanup-.LSTARTCODE + .uleb128 0 + .long .LcallUR-.LSTARTCODE + .long .LENDCODE-.LcallUR + .long 0 + .uleb128 0 +.Lcstend: + +#ifdef __PIC__ + .section .gnu.linkonce.t.__i686.get_pc_thunk.cx,"ax",@progbits + .globl __i686.get_pc_thunk.cx + .hidden __i686.get_pc_thunk.cx + .type __i686.get_pc_thunk.cx,@function +__i686.get_pc_thunk.cx: + movl (%esp), %ecx; + ret + .size __i686.get_pc_thunk.cx,.-__i686.get_pc_thunk.cx +#endif + +#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 diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S new file mode 100644 index 000000000..6205a60ef --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S @@ -0,0 +1,194 @@ +/* Copyright (C) 2002, 2003, 2007 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 <lowlevellock.h> +#include <lowlevelrwlock.h> +#include <pthread-errnos.h> +#include <bits/kernel-features.h> +#include <tls.h> + + + .text + + .globl __pthread_rwlock_rdlock + .type __pthread_rwlock_rdlock,@function + .align 16 +__pthread_rwlock_rdlock: + cfi_startproc + pushl %esi + cfi_adjust_cfa_offset(4) + pushl %ebx + cfi_adjust_cfa_offset(4) + cfi_offset(%esi, -8) + cfi_offset(%ebx, -12) + + xorl %esi, %esi + movl 12(%esp), %ebx + + /* Get the lock. */ + movl $1, %edx + xorl %eax, %eax + LOCK +#if MUTEX == 0 + cmpxchgl %edx, (%ebx) +#else + cmpxchgl %edx, MUTEX(%ebx) +#endif + jnz 1f + +2: movl WRITER(%ebx), %eax + testl %eax, %eax + jne 14f + cmpl $0, WRITERS_QUEUED(%ebx) + je 5f + cmpb $0, FLAGS(%ebx) + je 5f + +3: addl $1, READERS_QUEUED(%ebx) + je 4f + + movl READERS_WAKEUP(%ebx), %edx + + LOCK +#if MUTEX == 0 + subl $1, (%ebx) +#else + subl $1, MUTEX(%ebx) +#endif + jne 10f + +11: +#ifdef __ASSUME_PRIVATE_FUTEX + movzbl PSHARED(%ebx), %ecx + xorl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %ecx +#else + movzbl PSHARED(%ebx), %ecx +# if FUTEX_WAIT != 0 + orl $FUTEX_WAIT, %ecx +# endif + xorl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $READERS_WAKEUP, %ebx + movl $SYS_futex, %eax + ENTER_KERNEL + + subl $READERS_WAKEUP, %ebx + + /* Reget the lock. */ + movl $1, %edx + xorl %eax, %eax + LOCK +#if MUTEX == 0 + cmpxchgl %edx, (%ebx) +#else + cmpxchgl %edx, MUTEX(%ebx) +#endif + jnz 12f + +13: subl $1, READERS_QUEUED(%ebx) + jmp 2b + +5: xorl %edx, %edx + addl $1, NR_READERS(%ebx) + je 8f +9: LOCK +#if MUTEX == 0 + subl $1, (%ebx) +#else + subl $1, MUTEX(%ebx) +#endif + jne 6f +7: + + movl %edx, %eax + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) + ret + + cfi_adjust_cfa_offset(8) + cfi_offset(%esi, -8) + cfi_offset(%ebx, -12) +1: +#if MUTEX == 0 + movl %ebx, %edx +#else + leal MUTEX(%ebx), %edx +#endif + movzbl PSHARED(%ebx), %ecx + call __lll_lock_wait + jmp 2b + +14: cmpl %gs:TID, %eax + jne 3b + /* Deadlock detected. */ + movl $EDEADLK, %edx + jmp 9b + +6: +#if MUTEX == 0 + movl %ebx, %eax +#else + leal MUTEX(%ebx), %eax +#endif + movzbl PSHARED(%ebx), %ecx + call __lll_unlock_wake + jmp 7b + + /* Overflow. */ +8: subl $1, NR_READERS(%ebx) + movl $EAGAIN, %edx + jmp 9b + + /* Overflow. */ +4: subl $1, READERS_QUEUED(%ebx) + movl $EAGAIN, %edx + jmp 9b + +10: +#if MUTEX == 0 + movl %ebx, %eax +#else + leal MUTEX(%ebx), %eax +#endif + movzbl PSHARED(%ebx), %ecx + call __lll_unlock_wake + jmp 11b + +12: +#if MUTEX == 0 + movl %ebx, %edx +#else + leal MUTEX(%ebx), %edx +#endif + movzbl PSHARED(%ebx), %ecx + call __lll_lock_wait + jmp 13b + cfi_endproc + .size __pthread_rwlock_rdlock,.-__pthread_rwlock_rdlock + + .globl pthread_rwlock_rdlock +pthread_rwlock_rdlock = __pthread_rwlock_rdlock + + .globl __pthread_rwlock_rdlock_internal +__pthread_rwlock_rdlock_internal = __pthread_rwlock_rdlock diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedrdlock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedrdlock.S new file mode 100644 index 000000000..be4530e13 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedrdlock.S @@ -0,0 +1,245 @@ +/* Copyright (C) 2002, 2003, 2007 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 <lowlevellock.h> +#include <lowlevelrwlock.h> +#include <pthread-errnos.h> +#include <bits/kernel-features.h> +#include <tls.h> + + + .text + + .globl pthread_rwlock_timedrdlock + .type pthread_rwlock_timedrdlock,@function + .align 16 +pthread_rwlock_timedrdlock: + cfi_startproc + pushl %esi + cfi_adjust_cfa_offset(4) + pushl %edi + cfi_adjust_cfa_offset(4) + pushl %ebx + cfi_adjust_cfa_offset(4) + pushl %ebp + cfi_adjust_cfa_offset(4) + cfi_offset(%esi, -8) + cfi_offset(%edi, -12) + cfi_offset(%ebx, -16) + cfi_offset(%ebp, -20) + subl $8, %esp + cfi_adjust_cfa_offset(8) + + movl 28(%esp), %ebp + movl 32(%esp), %edi + + /* Get the lock. */ + movl $1, %edx + xorl %eax, %eax + LOCK +#if MUTEX == 0 + cmpxchgl %edx, (%ebp) +#else + cmpxchgl %edx, MUTEX(%ebp) +#endif + jnz 1f + +2: movl WRITER(%ebp), %eax + testl %eax, %eax + jne 14f + cmpl $0, WRITERS_QUEUED(%ebp) + je 5f + cmpb $0, FLAGS(%ebp) + je 5f + + /* Check the value of the timeout parameter. */ +3: cmpl $1000000000, 4(%edi) + jae 19f + + addl $1, READERS_QUEUED(%ebp) + je 4f + + movl READERS_WAKEUP(%ebp), %esi + + LOCK +#if MUTEX == 0 + subl $1, (%ebp) +#else + subl $1, MUTEX(%ebp) +#endif + jne 10f + + /* Get current time. */ +11: movl %esp, %ebx + xorl %ecx, %ecx + movl $__NR_gettimeofday, %eax + ENTER_KERNEL + + /* Compute relative timeout. */ + movl 4(%esp), %eax + movl $1000, %edx + mul %edx /* Milli seconds to nano seconds. */ + movl (%edi), %ecx + movl 4(%edi), %edx + subl (%esp), %ecx + subl %eax, %edx + jns 15f + addl $1000000000, %edx + subl $1, %ecx +15: testl %ecx, %ecx + js 16f /* Time is already up. */ + + /* Futex call. */ + movl %ecx, (%esp) /* Store relative timeout. */ + movl %edx, 4(%esp) + + movl %esi, %edx +#ifdef __ASSUME_PRIVATE_FUTEX + movzbl PSHARED(%ebp), %ecx + xorl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %ecx +#else + movzbl PSHARED(%ebp), %ecx +# if FUTEX_WAIT != 0 + orl $FUTEX_WAIT, %ecx +# endif + xorl %gs:PRIVATE_FUTEX, %ecx +#endif + movl %esp, %esi + leal READERS_WAKEUP(%ebp), %ebx + movl $SYS_futex, %eax + ENTER_KERNEL + movl %eax, %esi +17: + + /* Reget the lock. */ + movl $1, %edx + xorl %eax, %eax + LOCK +#if MUTEX == 0 + cmpxchgl %edx, (%ebp) +#else + cmpxchgl %edx, MUTEX(%ebp) +#endif + jnz 12f + +13: subl $1, READERS_QUEUED(%ebp) + cmpl $-ETIMEDOUT, %esi + jne 2b + +18: movl $ETIMEDOUT, %edx + jmp 9f + + +5: xorl %edx, %edx + addl $1, NR_READERS(%ebp) + je 8f +9: LOCK +#if MUTEX == 0 + subl $1, (%ebp) +#else + subl $1, MUTEX(%ebp) +#endif + jne 6f + +7: movl %edx, %eax + + addl $8, %esp + cfi_adjust_cfa_offset(-8) + popl %ebp + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebp) + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + popl %edi + cfi_adjust_cfa_offset(-4) + cfi_restore(%edi) + popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) + ret + + cfi_adjust_cfa_offset(24) + cfi_offset(%esi, -8) + cfi_offset(%edi, -12) + cfi_offset(%ebx, -16) + cfi_offset(%ebp, -20) +1: +#if MUTEX == 0 + movl %ebp, %edx +#else + leal MUTEX(%ebp), %edx +#endif + movzbl PSHARED(%ebp), %ecx + call __lll_lock_wait + jmp 2b + +14: cmpl %gs:TID, %eax + jne 3b + movl $EDEADLK, %edx + jmp 9b + +6: +#if MUTEX == 0 + movl %ebp, %eax +#else + leal MUTEX(%ebp), %eax +#endif + movzbl PSHARED(%ebp), %ecx + call __lll_unlock_wake + jmp 7b + + /* Overflow. */ +8: subl $1, NR_READERS(%ebp) + movl $EAGAIN, %edx + jmp 9b + + /* Overflow. */ +4: subl $1, READERS_QUEUED(%ebp) + movl $EAGAIN, %edx + jmp 9b + +10: +#if MUTEX == 0 + movl %ebp, %eax +#else + leal MUTEX(%ebp), %eax +#endif + movzbl PSHARED(%ebp), %ecx + call __lll_unlock_wake + jmp 11b + +12: +#if MUTEX == 0 + movl %ebp, %edx +#else + leal MUTEX(%ebp), %edx +#endif + movzbl PSHARED(%ebp), %ecx + call __lll_lock_wait + jmp 13b + +16: movl $-ETIMEDOUT, %esi + jmp 17b + +19: movl $EINVAL, %edx + jmp 9b + cfi_endproc + .size pthread_rwlock_timedrdlock,.-pthread_rwlock_timedrdlock diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedwrlock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedwrlock.S new file mode 100644 index 000000000..61431ab71 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedwrlock.S @@ -0,0 +1,238 @@ +/* Copyright (C) 2002, 2003, 2007 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 <lowlevellock.h> +#include <lowlevelrwlock.h> +#include <pthread-errnos.h> +#include <bits/kernel-features.h> +#include <tls.h> + + + .text + + .globl pthread_rwlock_timedwrlock + .type pthread_rwlock_timedwrlock,@function + .align 16 +pthread_rwlock_timedwrlock: + cfi_startproc + pushl %esi + cfi_adjust_cfa_offset(4) + pushl %edi + cfi_adjust_cfa_offset(4) + pushl %ebx + cfi_adjust_cfa_offset(4) + pushl %ebp + cfi_adjust_cfa_offset(4) + cfi_offset(%esi, -8) + cfi_offset(%edi, -12) + cfi_offset(%ebx, -16) + cfi_offset(%ebp, -20) + subl $8, %esp + cfi_adjust_cfa_offset(8) + + movl 28(%esp), %ebp + movl 32(%esp), %edi + + /* Get the lock. */ + movl $1, %edx + xorl %eax, %eax + LOCK +#if MUTEX == 0 + cmpxchgl %edx, (%ebp) +#else + cmpxchgl %edx, MUTEX(%ebp) +#endif + jnz 1f + +2: movl WRITER(%ebp), %eax + testl %eax, %eax + jne 14f + cmpl $0, NR_READERS(%ebp) + je 5f + + /* Check the value of the timeout parameter. */ +3: cmpl $1000000000, 4(%edi) + jae 19f + + addl $1, WRITERS_QUEUED(%ebp) + je 4f + + movl WRITERS_WAKEUP(%ebp), %esi + + LOCK +#if MUTEX == 0 + subl $1, (%ebp) +#else + subl $1, MUTEX(%ebp) +#endif + jne 10f + + /* Get current time. */ +11: movl %esp, %ebx + xorl %ecx, %ecx + movl $__NR_gettimeofday, %eax + ENTER_KERNEL + + /* Compute relative timeout. */ + movl 4(%esp), %eax + movl $1000, %edx + mul %edx /* Milli seconds to nano seconds. */ + movl (%edi), %ecx + movl 4(%edi), %edx + subl (%esp), %ecx + subl %eax, %edx + jns 15f + addl $1000000000, %edx + subl $1, %ecx +15: testl %ecx, %ecx + js 16f /* Time is already up. */ + + /* Futex call. */ + movl %ecx, (%esp) /* Store relative timeout. */ + movl %edx, 4(%esp) + + movl %esi, %edx +#ifdef __ASSUME_PRIVATE_FUTEX + movzbl PSHARED(%ebp), %ecx + xorl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %ecx +#else + movzbl PSHARED(%ebp), %ecx +# if FUTEX_WAIT != 0 + orl $FUTEX_WAIT, %ecx +# endif + xorl %gs:PRIVATE_FUTEX, %ecx +#endif + movl %esp, %esi + leal WRITERS_WAKEUP(%ebp), %ebx + movl $SYS_futex, %eax + ENTER_KERNEL + movl %eax, %esi +17: + + /* Reget the lock. */ + movl $1, %edx + xorl %eax, %eax + LOCK +#if MUTEX == 0 + cmpxchgl %edx, (%ebp) +#else + cmpxchgl %edx, MUTEX(%ebp) +#endif + jnz 12f + +13: subl $1, WRITERS_QUEUED(%ebp) + cmpl $-ETIMEDOUT, %esi + jne 2b + +18: movl $ETIMEDOUT, %edx + jmp 9f + + +5: xorl %edx, %edx + movl %gs:TID, %eax + movl %eax, WRITER(%ebp) +9: LOCK +#if MUTEX == 0 + subl $1, (%ebp) +#else + subl $1, MUTEX(%ebp) +#endif + jne 6f + +7: movl %edx, %eax + + addl $8, %esp + cfi_adjust_cfa_offset(-8) + popl %ebp + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebp) + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + popl %edi + cfi_adjust_cfa_offset(-4) + cfi_restore(%edi) + popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) + ret + + cfi_adjust_cfa_offset(24) + cfi_offset(%esi, -8) + cfi_offset(%edi, -12) + cfi_offset(%ebx, -16) + cfi_offset(%ebp, -20) +1: +#if MUTEX == 0 + movl %ebp, %edx +#else + leal MUTEX(%ebp), %edx +#endif + movzbl PSHARED(%ebp), %ecx + call __lll_lock_wait + jmp 2b + +14: cmpl %gs:TID, %eax + jne 3b +20: movl $EDEADLK, %edx + jmp 9b + +6: +#if MUTEX == 0 + movl %ebp, %eax +#else + leal MUTEX(%ebp), %eax +#endif + movzbl PSHARED(%ebp), %ecx + call __lll_unlock_wake + jmp 7b + + /* Overflow. */ +4: subl $1, WRITERS_QUEUED(%ebp) + movl $EAGAIN, %edx + jmp 9b + +10: +#if MUTEX == 0 + movl %ebp, %eax +#else + leal MUTEX(%ebp), %eax +#endif + movzbl PSHARED(%ebp), %ecx + call __lll_unlock_wake + jmp 11b + +12: +#if MUTEX == 0 + movl %ebp, %edx +#else + leal MUTEX(%ebp), %edx +#endif + movzbl PSHARED(%ebp), %ecx + call __lll_lock_wait + jmp 13b + +16: movl $-ETIMEDOUT, %esi + jmp 17b + +19: movl $EINVAL, %edx + jmp 9b + cfi_endproc + .size pthread_rwlock_timedwrlock,.-pthread_rwlock_timedwrlock diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_unlock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_unlock.S new file mode 100644 index 000000000..426ffdcd7 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_unlock.S @@ -0,0 +1,156 @@ +/* Copyright (C) 2002, 2003, 2007 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 <lowlevellock.h> +#include <lowlevelrwlock.h> +#include <bits/kernel-features.h> +#include <tls.h> + + + .text + + .globl __pthread_rwlock_unlock + .type __pthread_rwlock_unlock,@function + .align 16 +__pthread_rwlock_unlock: + cfi_startproc + pushl %ebx + cfi_adjust_cfa_offset(4) + pushl %edi + cfi_adjust_cfa_offset(4) + cfi_offset(%ebx, -8) + cfi_offset(%edi, -12) + + movl 12(%esp), %edi + + /* Get the lock. */ + movl $1, %edx + xorl %eax, %eax + LOCK +#if MUTEX == 0 + cmpxchgl %edx, (%edi) +#else + cmpxchgl %edx, MUTEX(%edi) +#endif + jnz 1f + +2: cmpl $0, WRITER(%edi) + jne 5f + subl $1, NR_READERS(%edi) + jnz 6f + +5: movl $0, WRITER(%edi) + + movl $1, %edx + leal WRITERS_WAKEUP(%edi), %ebx + cmpl $0, WRITERS_QUEUED(%edi) + jne 0f + + /* If also no readers waiting nothing to do. */ + cmpl $0, READERS_QUEUED(%edi) + je 6f + + movl $0x7fffffff, %edx + leal READERS_WAKEUP(%edi), %ebx + +0: addl $1, (%ebx) + LOCK +#if MUTEX == 0 + subl $1, (%edi) +#else + subl $1, MUTEX(%edi) +#endif + jne 7f + +8: +#ifdef __ASSUME_PRIVATE_FUTEX + movzbl PSHARED(%edi), %ecx + xorl $FUTEX_PRIVATE_FLAG|FUTEX_WAKE, %ecx +#else + movzbl PSHARED(%edi), %ecx + orl $FUTEX_WAKE, %ecx + xorl %gs:PRIVATE_FUTEX, %ecx +#endif + movl $SYS_futex, %eax + ENTER_KERNEL + + xorl %eax, %eax + popl %edi + cfi_adjust_cfa_offset(-4) + cfi_restore(%edi) + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + ret + + cfi_adjust_cfa_offset(8) + cfi_offset(%ebx, -8) + cfi_offset(%edi, -12) + .align 16 +6: LOCK +#if MUTEX == 0 + subl $1, (%edi) +#else + subl $1, MUTEX(%edi) +#endif + jne 3f + +4: xorl %eax, %eax + popl %edi + popl %ebx + ret + +1: +#if MUTEX == 0 + movl %edi, %edx +#else + leal MUTEX(%edi), %edx +#endif + movzbl PSHARED(%edi), %ecx + call __lll_lock_wait + jmp 2b + +3: +#if MUTEX == 0 + movl %edi, %eax +#else + leal MUTEX(%edi), %eax +#endif + movzbl PSHARED(%edi), %ecx + call __lll_unlock_wake + jmp 4b + +7: +#if MUTEX == 0 + movl %edi, %eax +#else + leal MUTEX(%edi), %eax +#endif + movzbl PSHARED(%edi), %ecx + call __lll_unlock_wake + jmp 8b + cfi_endproc + .size __pthread_rwlock_unlock,.-__pthread_rwlock_unlock + + .globl pthread_rwlock_unlock +pthread_rwlock_unlock = __pthread_rwlock_unlock + + .globl __pthread_rwlock_unlock_internal +__pthread_rwlock_unlock_internal = __pthread_rwlock_unlock diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S new file mode 100644 index 000000000..0414ba060 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S @@ -0,0 +1,185 @@ +/* Copyright (C) 2002, 2003, 2007 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 <lowlevellock.h> +#include <lowlevelrwlock.h> +#include <pthread-errnos.h> +#include <bits/kernel-features.h> +#include <tls.h> + + + .text + + .globl __pthread_rwlock_wrlock + .type __pthread_rwlock_wrlock,@function + .align 16 +__pthread_rwlock_wrlock: + cfi_startproc + pushl %esi + cfi_adjust_cfa_offset(4) + pushl %ebx + cfi_adjust_cfa_offset(4) + cfi_offset(%esi, -8) + cfi_offset(%ebx, -12) + + xorl %esi, %esi + movl 12(%esp), %ebx + + /* Get the lock. */ + movl $1, %edx + xorl %eax, %eax + LOCK +#if MUTEX == 0 + cmpxchgl %edx, (%ebx) +#else + cmpxchgl %edx, MUTEX(%ebx) +#endif + jnz 1f + +2: movl WRITER(%ebx), %eax + testl %eax, %eax + jne 14f + cmpl $0, NR_READERS(%ebx) + je 5f + +3: addl $1, WRITERS_QUEUED(%ebx) + je 4f + + movl WRITERS_WAKEUP(%ebx), %edx + + LOCK +#if MUTEX == 0 + subl $1, (%ebx) +#else + subl $1, MUTEX(%ebx) +#endif + jne 10f + +11: +#ifdef __ASSUME_PRIVATE_FUTEX + movzbl PSHARED(%ebx), %ecx + xorl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %ecx +#else + movzbl PSHARED(%ebx), %ecx +# if FUTEX_WAIT != 0 + orl $FUTEX_WAIT, %ecx +# endif + xorl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $WRITERS_WAKEUP, %ebx + movl $SYS_futex, %eax + ENTER_KERNEL + + subl $WRITERS_WAKEUP, %ebx + + /* Reget the lock. */ + movl $1, %edx + xorl %eax, %eax + LOCK +#if MUTEX == 0 + cmpxchgl %edx, (%ebx) +#else + cmpxchgl %edx, MUTEX(%ebx) +#endif + jnz 12f + +13: subl $1, WRITERS_QUEUED(%ebx) + jmp 2b + +5: xorl %edx, %edx + movl %gs:TID, %eax + movl %eax, WRITER(%ebx) +9: LOCK +#if MUTEX == 0 + subl $1, (%ebx) +#else + subl $1, MUTEX(%ebx) +#endif + jne 6f +7: + + movl %edx, %eax + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + popl %esi + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) + ret + + cfi_adjust_cfa_offset(8) + cfi_offset(%esi, -8) + cfi_offset(%ebx, -12) +1: +#if MUTEX == 0 + movl %ebx, %edx +#else + leal MUTEX(%ebx), %edx +#endif + movzbl PSHARED(%ebx), %ecx + call __lll_lock_wait + jmp 2b + +14: cmpl %gs:TID , %eax + jne 3b + movl $EDEADLK, %edx + jmp 9b + +6: +#if MUTEX == 0 + movl %ebx, %eax +#else + leal MUTEX(%ebx), %eax +#endif + movzbl PSHARED(%ebx), %ecx + call __lll_unlock_wake + jmp 7b + +4: subl $1, WRITERS_QUEUED(%ebx) + movl $EAGAIN, %edx + jmp 9b + +10: +#if MUTEX == 0 + movl %ebx, %eax +#else + leal MUTEX(%ebx), %eax +#endif + movzbl PSHARED(%ebx), %ecx + call __lll_unlock_wake + jmp 11b + +12: +#if MUTEX == 0 + movl %ebx, %edx +#else + leal MUTEX(%ebx), %edx +#endif + movzbl PSHARED(%ebx), %ecx + call __lll_lock_wait + jmp 13b + cfi_endproc + .size __pthread_rwlock_wrlock,.-__pthread_rwlock_wrlock + + .globl pthread_rwlock_wrlock +pthread_rwlock_wrlock = __pthread_rwlock_wrlock + + .globl __pthread_rwlock_wrlock_internal +__pthread_rwlock_wrlock_internal = __pthread_rwlock_wrlock diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S new file mode 100644 index 000000000..b077a20ca --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_post.S @@ -0,0 +1,142 @@ +/* Copyright (C) 2002, 2003, 2005, 2007, 2008 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 <pthread-errnos.h> +#include <structsem.h> +#include <lowlevellock.h> + + + .text + + .globl __new_sem_post + .type __new_sem_post,@function + .align 16 +__new_sem_post: + cfi_startproc + pushl %ebx + cfi_adjust_cfa_offset(4) + cfi_offset(%ebx, -8) + + movl 8(%esp), %ebx + +#if VALUE == 0 + movl (%ebx), %eax +#else + movl VALUE(%ebx), %eax +#endif +0: cmpl $SEM_VALUE_MAX, %eax + je 3f + leal 1(%eax), %edx + LOCK +#if VALUE == 0 + cmpxchgl %edx, (%ebx) +#else + cmpxchgl %edx, VALUE(%ebx) +#endif + jnz 0b + + cmpl $0, NWAITERS(%ebx) + je 2f + + movl $FUTEX_WAKE, %ecx + orl PRIVATE(%ebx), %ecx + movl $1, %edx + movl $SYS_futex, %eax + ENTER_KERNEL + + testl %eax, %eax + js 1f + +2: xorl %eax, %eax + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + ret + + cfi_adjust_cfa_offset(4) + cfi_offset(%ebx, -8) +1: +#ifdef __PIC__ + call __x86.get_pc_thunk.bx +#else + movl $4f, %ebx +4: +#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 $EINVAL, (%edx) +# else + movl errno@gotntpoff(%ebx), %edx + movl $EINVAL, %gs:(%edx) +# endif +#else + call __errno_location@plt + movl $EINVAL, (%eax) +#endif + + orl $-1, %eax + popl %ebx + ret + +3: +#ifdef __PIC__ + call __x86.get_pc_thunk.bx +#else + movl $5f, %ebx +5: +#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 $EOVERFLOW, (%edx) +# else + movl errno@gotntpoff(%ebx), %edx + movl $EOVERFLOW, %gs:(%edx) +# endif +#else + call __errno_location@plt + movl $EOVERFLOW, (%eax) +#endif + + orl $-1, %eax + popl %ebx + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) + ret + cfi_endproc + .size __new_sem_post,.-__new_sem_post +weak_alias(__new_sem_post, sem_post) + + +#ifdef __PIC__ + .section .gnu.linkonce.t.__x86.get_pc_thunk.bx,"ax",@progbits + .globl __x86.get_pc_thunk.bx + .hidden __x86.get_pc_thunk.bx + .type __x86.get_pc_thunk.bx,@function +__x86.get_pc_thunk.bx: + movl (%esp), %ebx; + ret + .size __x86.get_pc_thunk.bx,.-__x86.get_pc_thunk.bx +#endif diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S new file mode 100644 index 000000000..a1e3225cb --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S @@ -0,0 +1,329 @@ +/* Copyright (C) 2002, 2003, 2004, 2005, 2007, 2009 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 <pthread-errnos.h> +#include <structsem.h> +#include <lowlevellock.h> + + +#if VALUE != 0 +# error "code needs to be rewritten for VALUE != 0" +#endif + + + .text + + .globl sem_timedwait + .type sem_timedwait,@function + .align 16 +sem_timedwait: +.LSTARTCODE: + movl 4(%esp), %ecx + + movl (%ecx), %eax +2: testl %eax, %eax + je 1f + + leal -1(%eax), %edx + LOCK + cmpxchgl %edx, (%ecx) + jne 2b + + xorl %eax, %eax + ret + + /* Check whether the timeout value is valid. */ +1: pushl %esi +.Lpush_esi: + pushl %edi +.Lpush_edi: + pushl %ebx +.Lpush_ebx: + subl $12, %esp +.Lsub_esp: + + movl 32(%esp), %edi + + /* Check for invalid nanosecond field. */ + cmpl $1000000000, 4(%edi) + movl $EINVAL, %esi + jae 6f + + LOCK + incl NWAITERS(%ecx) + +7: xorl %ecx, %ecx + movl %esp, %ebx + movl %ecx, %edx + movl $__NR_gettimeofday, %eax + ENTER_KERNEL + + /* Compute relative timeout. */ + movl 4(%esp), %eax + movl $1000, %edx + mul %edx /* Milli seconds to nano seconds. */ + movl (%edi), %ecx + movl 4(%edi), %edx + subl (%esp), %ecx + subl %eax, %edx + jns 5f + addl $1000000000, %edx + subl $1, %ecx +5: testl %ecx, %ecx + movl $ETIMEDOUT, %esi + js 6f /* Time is already up. */ + + movl %ecx, (%esp) /* Store relative timeout. */ + movl %edx, 4(%esp) + +.LcleanupSTART: + call __pthread_enable_asynccancel + movl %eax, 8(%esp) + + movl 28(%esp), %ebx /* Load semaphore address. */ +#if FUTEX_WAIT == 0 + movl PRIVATE(%ebx), %ecx +#else + movl $FUTEX_WAIT, %ecx + orl PRIVATE(%ebx), %ecx +#endif + movl %esp, %esi + xorl %edx, %edx + movl $SYS_futex, %eax + ENTER_KERNEL + movl %eax, %esi + + movl 8(%esp), %eax + call __pthread_disable_asynccancel +.LcleanupEND: + + testl %esi, %esi + je 9f + cmpl $-EWOULDBLOCK, %esi + jne 3f + +9: movl (%ebx), %eax +8: testl %eax, %eax + je 7b + + leal -1(%eax), %ecx + LOCK + cmpxchgl %ecx, (%ebx) + jne 8b + + xorl %eax, %eax + + LOCK + decl NWAITERS(%ebx) + +10: addl $12, %esp +.Ladd_esp: + popl %ebx +.Lpop_ebx: + popl %edi +.Lpop_edi: + popl %esi +.Lpop_esi: + ret + +.Lafter_ret: +3: negl %esi +6: +#ifdef __PIC__ + call __x86.get_pc_thunk.bx +#else + movl $4f, %ebx +4: +#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 + + movl 28(%esp), %ebx /* Load semaphore address. */ + orl $-1, %eax + jmp 10b + .size sem_timedwait,.-sem_timedwait + + + .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_esi-.LSTARTCODE + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 8 + .byte 0x86 # DW_CFA_offset %esi + .uleb128 2 + .byte 4 # DW_CFA_advance_loc4 + .long .Lpush_edi-.Lpush_esi + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 12 + .byte 0x87 # DW_CFA_offset %edi + .uleb128 3 + .byte 4 # DW_CFA_advance_loc4 + .long .Lpush_ebx-.Lpush_edi + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 16 + .byte 0x83 # DW_CFA_offset %ebx + .uleb128 4 + .byte 4 # DW_CFA_advance_loc4 + .long .Lsub_esp-.Lpush_ebx + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 28 + .byte 4 # DW_CFA_advance_loc4 + .long .Ladd_esp-.Lsub_esp + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 16 + .byte 4 # DW_CFA_advance_loc4 + .long .Lpop_ebx-.Ladd_esp + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 12 + .byte 0xc3 # DW_CFA_restore %ebx + .byte 4 # DW_CFA_advance_loc4 + .long .Lpop_edi-.Lpop_ebx + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 8 + .byte 0xc7 # DW_CFA_restore %edi + .byte 4 # DW_CFA_advance_loc4 + .long .Lpop_esi-.Lpop_edi + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 4 + .byte 0xc6 # DW_CFA_restore %esi + .byte 4 # DW_CFA_advance_loc4 + .long .Lafter_ret-.Lpop_esi + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 28 + .byte 0x86 # DW_CFA_offset %esi + .uleb128 2 + .byte 0x87 # DW_CFA_offset %edi + .uleb128 3 + .byte 0x83 # DW_CFA_offset %ebx + .uleb128 4 + .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 diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_trywait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_trywait.S new file mode 100644 index 000000000..dad96858f --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_trywait.S @@ -0,0 +1,79 @@ +/* Copyright (C) 2002, 2003, 2005, 2007 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 <pthread-errnos.h> +#include <lowlevellock.h> + + .text + + .globl __new_sem_trywait + .type __new_sem_trywait,@function + .align 16 +__new_sem_trywait: + movl 4(%esp), %ecx + + movl (%ecx), %eax +2: testl %eax, %eax + jz 1f + + leal -1(%eax), %edx + LOCK + cmpxchgl %edx, (%ecx) + jne 2b + xorl %eax, %eax + ret + +1: +#ifdef __PIC__ + call __x86.get_pc_thunk.cx +#else + movl $3f, %ecx +3: +#endif + addl $_GLOBAL_OFFSET_TABLE_, %ecx +#if USE___THREAD +# ifdef NO_TLS_DIRECT_SEG_REFS + movl errno@gotntpoff(%ecx), %edx + addl %gs:0, %edx + movl $EAGAIN, (%edx) +# else + movl errno@gotntpoff(%ecx), %edx + movl $EAGAIN, %gs:(%edx) +# endif +#else + call __errno_location@plt + movl $EAGAIN, (%eax) +#endif + orl $-1, %eax + ret + .size __new_sem_trywait,.-__new_sem_trywait +weak_alias(__new_sem_trywait, sem_trywait) + + +#ifdef __PIC__ + .section .gnu.linkonce.t.__x86.get_pc_thunk.cx,"ax",@progbits + .globl __x86.get_pc_thunk.cx + .hidden __x86.get_pc_thunk.cx + .type __x86.get_pc_thunk.cx,@function +__x86.get_pc_thunk.cx: + movl (%esp), %ecx; + ret + .size __x86.get_pc_thunk.cx,.-__x86.get_pc_thunk.cx +#endif diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_wait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_wait.S new file mode 100644 index 000000000..b1c32ee4d --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/sem_wait.S @@ -0,0 +1,269 @@ +/* Copyright (C) 2002, 2003, 2005, 2007 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 <pthread-errnos.h> +#include <structsem.h> +#include <lowlevellock.h> + + +#if VALUE != 0 +# error "code needs to be rewritten for VALUE != 0" +#endif + + .text + + .globl __new_sem_wait + .type __new_sem_wait,@function + .align 16 +__new_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 __new_sem_wait,.-__new_sem_wait +weak_alias(__new_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 + |