Fix check for PI mutex in x86-64 pthread_cond_signal

Register eax contains the syscall number, use a different one instead.

diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index 5be464e2f22ad23d477e1f22eadfa71a1a88950f..092962fab6c0414aea961907d45a48555bb58aa9 100644 (file)
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,3 +1,9 @@
+2009-08-10  Andreas Schwab  <schwab@redhat.com>
+
+       * sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S
+       (__pthread_cond_signal): Don't clobber register used for syscall
+       number.
+
 2009-08-08  Ulrich Drepper  <drepper@redhat.com>
 
        * sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S (sem_timedwait):

diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S
index 4d001eec7fe86e6f7c753b9e5d95dfa54d4a6941..d1d83a84f9f2e46fdc2b18445a453f7eaadabc73 100644 (file)
--- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S
+++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S
@@ -64,9 +64,9 @@ __pthread_cond_signal:
 
        /* Get the address of the mutex used.  */
        movq    dep_mutex(%r8), %rcx
-       movl    MUTEX_KIND(%rcx), %eax
-       andl    $(ROBUST_BIT|PI_BIT), %eax
-       cmpl    $PI_BIT, %eax
+       movl    MUTEX_KIND(%rcx), %r11d
+       andl    $(ROBUST_BIT|PI_BIT), %r11d
+       cmpl    $PI_BIT, %r11d
        je      9f
 
 #ifdef __ASSUME_PRIVATE_FUTEX