diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S index db0639d21c..763c14b08f 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S +++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -77,8 +77,20 @@ __pthread_rwlock_rdlock: #endif jne 10f -11: addl $READERS_WAKEUP, %ebx - movl %esi, %ecx /* movl $FUTEX_WAIT, %ecx */ +11: +#if __ASSUME_PRIVATE_FUTEX + movl $FUTEX_PRIVATE_FLAG|FUTEX_WAIT, %ecx + xorl PSHARED(%ebx), %ecx +#else +# if FUTEX_WAIT == 0 + movl PSHARED(%ebx), %ecx +# else + movl $FUTEX_WAIT, %ecx + orl PSHARED(%ebx), %ecx +# endif + xorl %gs:PRIVATE_FUTEX, %ecx +#endif + addl $READERS_WAKEUP, %ebx movl $SYS_futex, %eax ENTER_KERNEL |