* 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, 25 insertions, 6 deletions

diff --git a/nptl/sysdeps/unix/sysv/linux/sh/lowlevellock.S b/nptl/sysdeps/unix/sysv/linux/sh/lowlevellock.S
index 3b0b66d436..b10903bcd7 100644
--- a/nptl/sysdeps/unix/sysv/linux/sh/lowlevellock.S
+++ b/nptl/sysdeps/unix/sysv/linux/sh/lowlevellock.S
@@ -24,8 +24,24 @@
 
 #define SYS_gettimeofday	__NR_gettimeofday
 #define SYS_futex		240
-#define FUTEX_WAIT		0
-#define FUTEX_WAKE		1
+#ifndef FUTEX_WAIT
+# define FUTEX_WAIT		0
+# define FUTEX_WAKE		1
+#endif
+
+#ifndef LOAD_FUTEX_WAIT
+# if FUTEX_WAIT == 0
+#  define LOAD_FUTEX_WAIT(reg,tmp) \
+	xor	reg, reg
+# else
+#  define LOAD_FUTEX_WAIT(reg,tmp) \
+	mov	#FUTEX_WAIT, reg; \
+	extu.b	reg, reg
+# endif
+# define LOAD_FUTEX_WAKE(reg,tmp) \
+	mov	#FUTEX_WAKE, reg; \
+	extu.b	reg, reg
+#endif
 
 
 	.globl	__lll_mutex_lock_wait
@@ -40,7 +56,7 @@ __lll_mutex_lock_wait:
 	mov	r4, r6
 	mov	r5, r8
 	mov	#0, r7		/* No timeout.  */
-	mov	#FUTEX_WAIT, r5
+	LOAD_FUTEX_WAIT (r5, r0)
 
 	mov	#2, r4
 	cmp/eq	r4, r6
@@ -133,7 +149,7 @@ __lll_mutex_timedlock_wait:
 	bt	8f
 
 	mov	r8, r4
-	mov	#FUTEX_WAIT, r5
+	LOAD_FUTEX_WAIT (r5, r0)
 	mov	r10, r6
 	mov	r15, r7
 	mov	#SYS_futex, r3
@@ -192,7 +208,7 @@ __lll_mutex_timedlock_wait:
 	.align	5
 	cfi_startproc
 __lll_mutex_unlock_wake:
-	mov	#FUTEX_WAKE, r5
+	LOAD_FUTEX_WAKE (r5, r0)
 	mov	#1, r6		/* Wake one thread.  */
 	mov	#0, r7
 	mov.l	r7, @r4		/* Stores 0.  */
@@ -261,7 +277,10 @@ __lll_timedwait_tid:
 	bt	4f
 
 	mov	r8, r4
-	mov	#FUTEX_WAIT, r5
+	/* XXX The kernel so far uses global futex for the wakeup at
+	   all times.  */
+	mov	#0, r5
+	extu.b	r5, r5
 	mov	r2, r6
 	mov	r15, r7
 	mov	#SYS_futex, r3