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Do not use branch likely.

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2002-02-05  H.J. Lu  <hjl@gnu.org>

	* sysdeps/mips/pspinlock.c (__pthread_spin_lock): Not use
	branch likely.
	* sysdeps/mips/pt-machine.h (testandset): Likewise.
	(__compare_and_swap): Likewise.

>>>>>>> 1.469
This commit is contained in:
Andreas Jaeger
2002-02-07 10:39:07 +00:00
parent cd30b01ee9
commit a6049f98ed
5 changed files with 33 additions and 37 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
linuxthreads/ChangeLog
View File

@ -1,3 +1,10 @@
2002-02-05 H.J. Lu <hjl@gnu.org>
* sysdeps/mips/pspinlock.c (__pthread_spin_lock): Not use
branch likely.
* sysdeps/mips/pt-machine.h (testandset): Likewise.
(__compare_and_swap): Likewise.
2002-02-07 Ulrich Drepper <drepper@redhat.com>
* internals.h: Move declarations/definitions of
@ -9,6 +16,7 @@
* sysdeps/i386/tls.h: Add TLS definitions also for !FLOATING_STACKS.
Define THREAD_GETMEM accordingly.
>>>>>>> 1.469
2002-02-06 Ulrich Drepper <drepper@redhat.com>
* sysdeps/i386/tls.h: Include <stddef.h> for size_t.

9
linuxthreads/sysdeps/mips/pspinlock.c
View File

@ -32,17 +32,16 @@ __pthread_spin_lock (pthread_spinlock_t *lock)
unsigned int tmp1, tmp2;
asm volatile
("\t\t\t# spin_lock\n\t"
"ll %1,%3\n"
("\t\t\t# spin_lock\n"
"1:\n\t"
"ll %1,%3\n\t"
".set push\n\t"
".set noreorder\n\t"
"bnez %1,1b\n\t"
" li %2,1\n\t"
".set pop\n\t"
"sc %2,%0\n\t"
"beqzl %2,1b\n\t"
" ll %1,%3\n\t"
".set pop"
"beqz %2,1b"
: "=m" (*lock), "=&r" (tmp1), "=&r" (tmp2)
: "m" (*lock)
: "memory");

11
linuxthreads/sysdeps/mips/pt-machine.h
View File

@ -1,6 +1,6 @@
/* Machine-dependent pthreads configuration and inline functions.
Copyright (C) 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
Copyright (C) 1996, 1997, 1998, 2000, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ralf Baechle <ralf@gnu.org>.
Based on the Alpha version by Richard Henderson <rth@tamu.edu>.
@ -57,18 +57,17 @@ __compare_and_swap (long int *p, long int oldval, long int newval)
long int ret, temp;
__asm__ __volatile__
("/* Inline compare & swap */\n\t"
"ll %1,%5\n"
("/* Inline compare & swap */\n"
"1:\n\t"
"ll %1,%5\n\t"
".set push\n\t"
".set noreorder\n\t"
"bne %1,%3,2f\n\t"
" move %0,$0\n\t"
".set pop\n\t"
"move %0,%4\n\t"
"sc %0,%2\n\t"
"beqzl %0,1b\n\t"
" ll %1,%5\n\t"
".set pop\n"
"beqz %0,1b\n"
"2:\n\t"
"/* End compare & swap */"
: "=&r" (ret), "=&r" (temp), "=m" (*p)