mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 13:00:06 +00:00
Update.
* sysdeps/unix/sysv/linux/x86_64/lowlevellock.h (__lll_lock_wait): Reverse order of parameters. (__lll_timedwait_tid): Remove regparms attribute. * sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: New file. * sysdeps/unix/sysv/linux/x86_64/libc-lowlevellock.S: New file.
This commit is contained in:
Ulrich Drepper
parent
3273832c67
commit
ec06436c5b
@ -1,5 +1,11 @@
|
||||
2003-03-10 Ulrich Drepper <drepper@redhat.com>
|
||||
|
||||
* sysdeps/unix/sysv/linux/x86_64/lowlevellock.h (__lll_lock_wait):
|
||||
Reverse order of parameters.
|
||||
(__lll_timedwait_tid): Remove regparms attribute.
|
||||
* sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: New file.
|
||||
* sysdeps/unix/sysv/linux/x86_64/libc-lowlevellock.S: New file.
|
||||
|
||||
* sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S
|
||||
(__lll_timedwait_tid): Remove one unnecessary instruction.
|
||||
|
||||
|
||||
30
nptl/sysdeps/unix/sysv/linux/x86_64/libc-lowlevellock.S
Normal file
30
nptl/sysdeps/unix/sysv/linux/x86_64/libc-lowlevellock.S
Normal file
@ -0,0 +1,30 @@
|
||||
/* Copyright (C) 2002, 2003 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. */
|
||||
|
||||
/* In libc.so we do not unconditionally use the lock prefix. Only if
|
||||
the application is using threads. */
|
||||
#ifndef UP
|
||||
# define LOCK \
|
||||
cmpl $0, __libc_multiple_threads_ptr(%rip); \
|
||||
je 0f; \
|
||||
lock; \
|
||||
0:
|
||||
#endif
|
||||
|
||||
#include "lowlevellock.S"
|
||||
168
nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
Normal file
168
nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
Normal file
@ -0,0 +1,168 @@
|
||||
/* Copyright (C) 2002, 2003 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>
|
||||
|
||||
.text
|
||||
|
||||
#ifndef LOCK
|
||||
# ifdef UP
|
||||
# define LOCK
|
||||
# else
|
||||
# define LOCK lock
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#define SYS_gettimeofday __NR_gettimeofday
|
||||
#define SYS_futex 202
|
||||
#define FUTEX_WAIT 0
|
||||
#define FUTEX_WAKE 1
|
||||
|
||||
#define ETIMEDOUT 110
|
||||
|
||||
|
||||
/* Modified: %rax, %rsi. */
|
||||
.globl __lll_lock_wait
|
||||
.type __lll_lock_wait,@function
|
||||
.hidden __lll_lock_wait
|
||||
.align 16
|
||||
__lll_lock_wait:
|
||||
pushq %r10
|
||||
pushq %rdx
|
||||
|
||||
xorq %r10, %r10 /* No timeout. */
|
||||
|
||||
1:
|
||||
leal -1(%esi), %edx /* account for the preceeded xadd. */
|
||||
movq %r10, %rsi /* movl $FUTEX_WAIT, %ecx */
|
||||
movq $SYS_futex, %rax
|
||||
syscall
|
||||
|
||||
orl $-1, %esi /* Load -1. */
|
||||
LOCK
|
||||
xaddl %esi, (%rdi)
|
||||
jne,pn 1b
|
||||
|
||||
movl $-1, (%rdi)
|
||||
|
||||
popq %rdx
|
||||
popq %r10
|
||||
retq
|
||||
.size __lll_lock_wait,.-__lll_lock_wait
|
||||
|
||||
|
||||
#ifdef NOT_IN_libc
|
||||
.globl lll_unlock_wake_cb
|
||||
.type lll_unlock_wake_cb,@function
|
||||
.hidden lll_unlock_wake_cb
|
||||
.align 16
|
||||
lll_unlock_wake_cb:
|
||||
pushq %rsi
|
||||
pushq %rdx
|
||||
|
||||
LOCK
|
||||
addl $1, (%rdi)
|
||||
jng 1f
|
||||
|
||||
popq %rdx
|
||||
popq %rsi
|
||||
retq
|
||||
.size lll_unlock_wake_cb,.-lll_unlock_wake_cb
|
||||
#endif
|
||||
|
||||
|
||||
.globl __lll_unlock_wake
|
||||
.type __lll_unlock_wake,@function
|
||||
.hidden __lll_unlock_wake
|
||||
.align 16
|
||||
__lll_unlock_wake:
|
||||
pushq %rsi
|
||||
pushq %rdx
|
||||
|
||||
1: movq $FUTEX_WAKE, %rsi
|
||||
movl $1, %edx /* Wake one thread. */
|
||||
movq $SYS_futex, %rax
|
||||
movl %edx, (%rdi) /* Stores '$1'. */
|
||||
syscall
|
||||
|
||||
popq %rdx
|
||||
popq %rsi
|
||||
retq
|
||||
.size __lll_unlock_wake,.-__lll_unlock_wake
|
||||
|
||||
|
||||
#ifdef NOT_IN_libc
|
||||
.globl __lll_timedwait_tid
|
||||
.type __lll_timedwait_tid,@function
|
||||
.hidden __lll_timedwait_tid
|
||||
.align 16
|
||||
__lll_timedwait_tid:
|
||||
movl %rdi, %r8
|
||||
movl %rsi, %r9
|
||||
|
||||
subq $16, %rsp
|
||||
|
||||
/* Get current time. */
|
||||
2: movq %rsp, %rdi
|
||||
xorq %rsi, %rsi
|
||||
movq $SYS_gettimeofday, %rax
|
||||
syscall
|
||||
|
||||
/* Compute relative timeout. */
|
||||
movq 8(%esp), %rax
|
||||
movq $1000, %rdi
|
||||
mul %rdx /* Milli seconds to nano seconds. */
|
||||
movq (%r9), %rdi
|
||||
movq 8(%r9), %rsi
|
||||
subq (%rsp), %rdi
|
||||
subq %rax, %rsi
|
||||
jns 5f
|
||||
addq $1000000000, %rsi
|
||||
decq %rdi
|
||||
5: testq %rdi, %rdi
|
||||
js 6f /* Time is already up. */
|
||||
|
||||
movq %rdi, (%rsp) /* Store relative timeout. */
|
||||
movq %rsi, 8(%rsp)
|
||||
|
||||
movl (%r8), %edx
|
||||
testl %edx, %edx
|
||||
jz 4f
|
||||
|
||||
movq %rsp, %r10
|
||||
xorq %rsi, %rsi /* movl $FUTEX_WAIT, %ecx */
|
||||
movq %r8, %rdi
|
||||
movq $SYS_futex, %rax
|
||||
syscall
|
||||
|
||||
cmpl $0, (%rdi)
|
||||
jne 1f
|
||||
4: xorl %eax, %eax
|
||||
|
||||
addq $16, %rsp
|
||||
retq
|
||||
|
||||
1: cmpq $-ETIMEDOUT, %rax
|
||||
jne 2b
|
||||
|
||||
6: movl $ETIMEDOUT, %eax
|
||||
addq $16, %rsp
|
||||
retq
|
||||
.size __lll_timedwait_tid,.-__lll_timedwait_tid
|
||||
#endif
|
||||
@ -126,7 +126,7 @@ typedef int lll_lock_t;
|
||||
#define LLL_LOCK_INITIALIZER_LOCKED (0)
|
||||
|
||||
|
||||
extern int __lll_lock_wait (int val, int *__futex) attribute_hidden;
|
||||
extern int __lll_lock_wait (int *__futex, int val) attribute_hidden;
|
||||
extern int __lll_unlock_wake (int *__futex) attribute_hidden;
|
||||
extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
|
||||
|
||||
@ -256,7 +256,7 @@ extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
|
||||
} while (0)
|
||||
|
||||
extern int __lll_timedwait_tid (int *tid, const struct timespec *abstime)
|
||||
__attribute__ ((regparm (2))) attribute_hidden;
|
||||
attribute_hidden;
|
||||
#define lll_timedwait_tid(tid, abstime) \
|
||||
({ \
|
||||
int __result = 0; \
|
||||
|
||||
Loading…
Reference in New Issue
Block a user