Update.
* sysdeps/unix/sysv/linux/x86_64/lowlevellock.h (__lll_mutex_lock_wait): Reverse order of first two parameters. (__lll_mutex_timedlock_wait): Likewise. (lll_mutex_lock): Adjust asm for that. (lll_mutex_timedlock): Likewise. Mark cx, cc, r10 as clobbered. (lll_lock): Adjust asm for operand order change. * sysdeps/unix/sysv/linux/x86_64/lowlevelmutex.S: New file. * sysdeps/unix/sysv/linux/x86_64/libc-lowlevelmutex.S: New file.
This commit is contained in:
Ulrich Drepper
parent
ec06436c5b
commit
2a544d82ce
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@ -1,5 +1,14 @@
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2003-03-10 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
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(__lll_mutex_lock_wait): Reverse order of first two parameters.
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(__lll_mutex_timedlock_wait): Likewise.
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(lll_mutex_lock): Adjust asm for that.
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(lll_mutex_timedlock): Likewise. Mark cx, cc, r10 as clobbered.
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(lll_lock): Adjust asm for operand order change.
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* sysdeps/unix/sysv/linux/x86_64/lowlevelmutex.S: New file.
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* sysdeps/unix/sysv/linux/x86_64/libc-lowlevelmutex.S: New file.
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* sysdeps/unix/sysv/linux/x86_64/lowlevellock.h (__lll_lock_wait):
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Reverse order of parameters.
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(__lll_timedwait_tid): Remove regparms attribute.
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@ -0,0 +1,30 @@
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/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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/* In libc.so we do not unconditionally use the lock prefix. Only if
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the application is using threads. */
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#ifndef UP
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# define LOCK \
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cmpl $0, __libc_multiple_threads_ptr(%rip); \
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je 0f; \
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lock; \
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0:
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#endif
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#include "lowlevelmutex.S"
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@ -127,7 +127,7 @@ __lll_timedwait_tid:
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/* Compute relative timeout. */
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movq 8(%esp), %rax
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movq $1000, %rdi
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mul %rdx /* Milli seconds to nano seconds. */
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mul %rdi /* Milli seconds to nano seconds. */
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movq (%r9), %rdi
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movq 8(%r9), %rsi
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subq (%rsp), %rdi
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@ -42,10 +42,10 @@
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/* Does not preserve %eax and %ecx. */
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extern int __lll_mutex_lock_wait (int val, int *__futex) attribute_hidden;
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extern int __lll_mutex_lock_wait (int *__futex, int __val) attribute_hidden;
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/* Does not preserver %eax, %ecx, and %edx. */
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extern int __lll_mutex_timedlock_wait (int val, int *__futex,
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const struct timespec *abstime)
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extern int __lll_mutex_timedlock_wait (int *__futex, int __val,
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const struct timespec *__abstime)
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attribute_hidden;
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/* Preserves all registers but %eax. */
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extern int __lll_mutex_unlock_wait (int *__futex) attribute_hidden;
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@ -71,7 +71,7 @@ extern int __lll_mutex_unlock_wait (int *__futex) attribute_hidden;
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"jmp 2f\n\t" \
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".previous\n" \
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"2:" \
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: "=D" (ignore1), "=&S" (ignore2), "=m" (futex) \
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: "=S" (ignore1), "=&D" (ignore2), "=m" (futex) \
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: "0" (1), "2" (futex) \
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: "memory"); })
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@ -82,8 +82,8 @@ extern int __lll_mutex_unlock_wait (int *__futex) attribute_hidden;
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"testl %0, %0\n\t" \
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"jne 1f\n\t" \
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".subsection 1\n" \
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"1:\tmovl %0, %%edi\n\t" \
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"leaq %4, %%rsi\n\t" \
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"1:\tmovl %0, %%esi\n\t" \
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"leaq %4, %%rdi\n\t" \
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"movq %7, %%rdx\n\t" \
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"call __lll_mutex_timedlock_wait\n\t" \
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"jmp 2f\n\t" \
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@ -92,7 +92,7 @@ extern int __lll_mutex_unlock_wait (int *__futex) attribute_hidden;
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: "=a" (result), "=&D" (ignore1), "=&S" (ignore2), \
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"=&d" (ignore2), "=m" (futex) \
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: "0" (1), "4" (futex), "m" (timeout) \
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: "memory"); \
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: "memory", "cx", "cc", "r10"); \
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result; })
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@ -157,7 +157,7 @@ extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
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"jmp 2f\n\t" \
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".previous\n" \
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"2:" \
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: "=D" (ignore1), "=&S" (ignore2), "=m" (futex) \
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: "=S" (ignore1), "=&D" (ignore2), "=m" (futex) \
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: "0" (-1), "2" (futex) \
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: "memory"); })
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@ -0,0 +1,164 @@
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/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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.text
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#ifndef LOCK
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# ifdef UP
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# define LOCK
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# else
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# define LOCK lock
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# endif
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#endif
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#define SYS_gettimeofday __NR_gettimeofday
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#define SYS_futex 202
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#define FUTEX_WAIT 0
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#define FUTEX_WAKE 1
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#define EWOULDBLOCK 11
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#define EINVAL 22
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#define ETIMEDOUT 110
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.globl __lll_mutex_lock_wait
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.type __lll_mutex_lock_wait,@function
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.hidden __lll_mutex_lock_wait
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.align 16
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__lll_mutex_lock_wait:
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pushq %r10
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pushq %rdx
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xorq %r10, %r10 /* No timeout. */
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1:
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leal 1(%esi), %edx /* account for the preceeded xadd. */
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movq %r10, %rsi /* movl $FUTEX_WAIT, %ecx */
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movq $SYS_futex, %rax
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syscall
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movl $1, %esi
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LOCK
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xaddl %esi, (%rdi)
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testl %esi, %esi
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jne 1b
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movl $2, (%rdi)
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popq %rdx
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popq %r10
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retq
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.size __lll_mutex_lock_wait,.-__lll_mutex_lock_wait
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#ifdef NOT_IN_libc
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.globl __lll_mutex_timedlock_wait
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.type __lll_mutex_timedlock_wait,@function
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.hidden __lll_mutex_timedlock_wait
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.align 16
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__lll_mutex_timedlock_wait:
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/* Check for a valid timeout value. */
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cmpq $1000000000, 4(%rdx)
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jae 3f
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/* Stack frame for the timespec and timeval structs. */
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subq $16, %rsp
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movq %rdi, %r8
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movq %rdx, %r9
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leal 1(%eax), %edx
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/* Get current time. */
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1:
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movq %rsp, %rdi
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xorq %rsi, %rsi
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movq $SYS_gettimeofday, %rax
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syscall
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/* Compute relative timeout. */
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movq 8(%esp), %rax
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movq $1000, %rdi
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mul %rdi /* Milli seconds to nano seconds. */
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movq (%r9), %rdi
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movq 8(%r9), %rsi
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subq (%rsp), %rdi
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subq %rax, %rsi
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jns 4f
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addq $1000000000, %rsi
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decq %rdi
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4: testq %rdi, %rdi
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js 5f /* Time is already up. */
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/* Futex call. */
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movq %rdi, (%rsp) /* Store relative timeout. */
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movq %rsi, 4(%rsp)
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movq %rsp, %r10
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xorq %rsi, %rsi /* movq $FUTEX_WAIT, %rsi */
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movq %r8, %rdi
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movq $SYS_futex, %rax
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syscall
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movl $1, %edx
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LOCK
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xaddl %edx, (%rdi)
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testl %edx, %edx
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jne 7f
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movl $2, (%rdi)
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xorl %eax, %eax
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addq $16, %rsp
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retq
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/* Check whether the time expired. */
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7: cmpq $-ETIMEDOUT, %rax
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je 5f
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jmp 1b
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3: movl $EINVAL, %eax
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retq
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5: movl $ETIMEDOUT, %eax
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addq $16, %rsp
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retq
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.size __lll_mutex_timedlock_wait,.-__lll_mutex_timedlock_wait
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#endif
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.globl __lll_mutex_unlock_wake
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.type __lll_mutex_unlock_wake,@function
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.hidden __lll_mutex_unlock_wake
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.align 16
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__lll_mutex_unlock_wake:
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pushq %rsi
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pushq %rdx
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movl $0, (%rdi)
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movq $FUTEX_WAKE, %rsi
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movl $1, %edx /* Wake one thread. */
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movq $SYS_futex, %rax
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syscall
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popq %rdx
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popq %rsi
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retq
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.size __lll_mutex_unlock_wake,.-__lll_mutex_unlock_wake
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