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Fix x86 pthread_cond_signal() FUTEX_WAKE_OP fallback

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Dinakar Guniguntala 2010-08-19 00:46:19 -07:00 committed by Ulrich Drepper
parent b9b42ee01c
commit 022f6b8920
2 changed files with 7 additions and 2 deletions
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6
nptl/ChangeLog
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@ -1,3 +1,9 @@
2010-08-10 Dinakar Guniguntala <dino@in.ibm.com>
Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S: If
FUTEX_WAKE_OP fails make sure to call FUTEX_WAKE instead.
2010-08-12 H.J. Lu <hongjiu.lu@intel.com> 2010-08-12 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/unix/sysv/linux/i386/Makefile: New file. * sysdeps/unix/sysv/linux/i386/Makefile: New file.

3
nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S
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@ -1,4 +1,4 @@
/* Copyright (C) 2002,2003,2004,2005,2007,2009 Free Software Foundation, Inc. /* Copyright (C) 2002-2005,2007,2009,2010 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@ -163,7 +163,6 @@ __pthread_cond_signal:
#endif #endif
orl $FUTEX_WAKE, %ecx orl $FUTEX_WAKE, %ecx
xorl $(FUTEX_WAKE ^ FUTEX_WAKE_OP), %ecx
movl $SYS_futex, %eax movl $SYS_futex, %eax
/* %edx should be 1 already from $FUTEX_WAKE_OP syscall. /* %edx should be 1 already from $FUTEX_WAKE_OP syscall.
movl $1, %edx */ movl $1, %edx */