* sysdeps/unix/sysv/linux/sh/pthread_rwlock_rdlock.S:

	(__pthread_rwlock_rdlock): Don't use non SH-3/4 instruction.
	* sysdeps/unix/sysv/linux/sh/pthread_rwlock_wrlock.S:
	(__pthread_rwlock_wrlock): Likewise.
	* sysdeps/unix/sysv/linux/sh/pthread_rwlock_timedrdlock.S:
	(pthread_rwlock_timedrdlock): Likewise.
	* sysdeps/unix/sysv/linux/sh/pthread_rwlock_timedwrlock.S:
	(pthread_rwlock_timedwrlock): Likewise.
	* sysdeps/unix/sysv/linux/sh/pthread_rwlock_unlock.S:
	(__pthread_rwlock_unlock): Likewise.

2007-06-10  Kaz Kojima  <kkojima@rr.iij4u.or.jp>

	* sysdeps/sh/tcb-offsets.sym: Add PRIVATE_FUTEX.
	* sysdeps/unix/sysv/linux/sh/bits/pthreadtypes.h: Include endian.h.
	Split __flags into __flags, __shared, __pad1 and __pad2.
	* sysdeps/unix/sysv/linux/sh/libc-lowlevellock.S: Use private
        futexes if they are available.
	* sysdeps/unix/sysv/linux/sh/lowlevellock.S: Adjust so that change
        in libc-lowlevellock.S allow using private futexes.
	* sysdeps/unix/sysv/linux/sh/lowlevellock.h: Define
	FUTEX_PRIVATE_FLAG.  Add additional parameter to lll_futex_wait,
	lll_futex_timed_wait and lll_futex_wake.  Change lll_futex_wait
	to call lll_futex_timed_wait.  Add lll_private_futex_wait,
	lll_private_futex_timed_wait and lll_private_futex_wake.
	(lll_robust_mutex_unlock): Fix typo.
	* sysdeps/unix/sysv/linux/sh/pthread_barrier_wait.S: Use private
        field in futex command setup.
	* sysdeps/unix/sysv/linux/sh/pthread_cond_timedwait.S: Use
	COND_NWAITERS_SHIFT instead of COND_CLOCK_BITS.
	* sysdeps/unix/sysv/linux/sh/pthread_cond_wait.S: Likewise.
	* sysdeps/unix/sysv/linux/sh/pthread_once.S: Use private futexes
        if they are available.  Remove clear_once_control.
	* sysdeps/unix/sysv/linux/sh/pthread_rwlock_rdlock.S: Use private
	futexes if they are available.
	* sysdeps/unix/sysv/linux/sh/pthread_rwlock_timedrdlock.S: Likewise.
	* sysdeps/unix/sysv/linux/sh/pthread_rwlock_timedwrlock.S: Likewise.
	* sysdeps/unix/sysv/linux/sh/pthread_rwlock_unlock.S: Likewise.
	* sysdeps/unix/sysv/linux/sh/pthread_rwlock_wrlock.S: Likewise.
	* sysdeps/unix/sysv/linux/sh/sem_post.S: Add private futex support.
	Wake only when there are waiters.
	* sysdeps/unix/sysv/linux/sh/sem_wait.S: Add private futex
	support.  Indicate that there are waiters.  Remove unnecessary
        extra cancellation test.
	* sysdeps/unix/sysv/linux/sh/sem_timedwait.S: Likewise.  Removed
	left-over duplication of __sem_wait_cleanup.

1 files changed, 27 insertions, 2 deletions

diff --git a/nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_timedwrlock.S b/nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_timedwrlock.S
index 29e29b6f65..18641fe9df 100644
--- a/nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_timedwrlock.S
+++ b/nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_timedwrlock.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2003 Free Software Foundation, Inc.
+/* Copyright (C) 2003, 2007 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -20,12 +20,14 @@
 #include <lowlevelrwlock.h>
 #include <pthread-errnos.h>
 #include <tcb-offsets.h>
+#include <kernel-features.h>
 #include "lowlevel-atomic.h"
 
 #define SYS_gettimeofday	__NR_gettimeofday
 #define SYS_futex		240
 #define FUTEX_WAIT		0
 #define FUTEX_WAKE		1
+#define FUTEX_PRIVATE_FLAG    128
 
 
 	.text
@@ -114,7 +116,26 @@ pthread_rwlock_timedwrlock:
 
 	/* Futex call.  */
 	mov	r15, r7
-	mov	#FUTEX_WAIT, r5
+#if __ASSUME_PRIVATE_FUTEX
+	mov	#PSHARED, r0
+	mov.b	@(r0,r8), r5
+	mov	#(FUTEX_PRIVATE_FLAG|FUTEX_WAIT), r0
+	xor	r0, r5
+	extu.b	r5, r5
+#else
+	mov	#PSHARED, r0
+	mov.b	@(r0,r8), r5
+	extu.b	r5, r5
+# if FUTEX_WAIT != 0
+	mov	#FUTEX_WAIT, r0
+	or	r0, r5
+# endif
+	stc	gbr, r1
+	mov.w	.Lpfoff, r2
+	add	r2, r1
+	mov.l	@r1, r0
+	xor	r0, r5
+#endif
 	mov	r10, r6
 	mov	r8, r4
 	add	#WRITERS_WAKEUP, r4
@@ -175,6 +196,10 @@ pthread_rwlock_timedwrlock:
 	rts
 	 mov	r3, r0
 
+#if !__ASSUME_PRIVATE_FUTEX
+.Lpfoff:
+	.word	PRIVATE_FUTEX - TLS_PRE_TCB_SIZE
+#endif
 .L1k1:
 	.word	1000
 	.align	2