* sysdeps/unix/sysv/linux/sh/sysdep.h (INTERNAL_SYSCALL):

	Add "t" to clobber list.
	(INTERNAL_SYSCALL_NCS): Likewise.

3 files changed, 114 insertions, 3 deletions

diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index 4755c789d1..4fb05b2feb 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,3 +1,11 @@
+2009-01-14  Kaz Kojima  <kkojima@rr.iij4u.or.jp>
+
+	* sysdeps/unix/sysv/linux/sh/lowlevellock.S
+	(__lll_timedlock_wait): Use FUTEX_WAIT_BITSET|FUTEX_CLOCK_REALTIME
+	instead of computing relative timeout.
+	* sysdeps/unix/sysv/linux/sh/lowlevellock.h: Define
+	FUTEX_CLOCK_REALTIME and FUTEX_BITSET_MATCH_ANY.
+
 2009-01-25  Ulrich Drepper  <drepper@redhat.com>
 
 	* pthread_mutex_lock.c (__pthread_mutex_lock): Remove unused label out.
diff --git a/nptl/sysdeps/unix/sysv/linux/sh/lowlevellock.S b/nptl/sysdeps/unix/sysv/linux/sh/lowlevellock.S
index d8279173d7..c051192cee 100644
--- a/nptl/sysdeps/unix/sysv/linux/sh/lowlevellock.S
+++ b/nptl/sysdeps/unix/sysv/linux/sh/lowlevellock.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2003, 2004, 2005, 2007, 2008
+/* Copyright (C) 2003, 2004, 2005, 2007, 2008, 2009
    Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
@@ -36,6 +36,13 @@
 	mov	#(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), tmp; \
 	extu.b	tmp, tmp; \
 	xor	tmp, reg
+# define LOAD_FUTEX_WAIT_ABS(reg,tmp,tmp2) \
+	mov	#(FUTEX_WAIT_BITSET | FUTEX_PRIVATE_FLAG), tmp; \
+	extu.b	tmp, tmp; \
+	mov	#(FUTEX_CLOCK_REALTIME >> 8), tmp2; \
+	swap.b	tmp2, tmp2; \
+	or	tmp2, tmp; \
+	xor	tmp, reg
 # define LOAD_FUTEX_WAKE(reg,tmp,tmp2) \
 	mov	#(FUTEX_WAKE | FUTEX_PRIVATE_FLAG), tmp; \
 	extu.b	tmp, tmp; \
@@ -96,6 +103,22 @@
 	and	tmp2, reg	; \
 	mov	#FUTEX_WAIT, tmp ; \
 	or	tmp, reg
+#  define LOAD_FUTEX_WAIT_ABS(reg,tmp,tmp2) \
+	stc	gbr, tmp	; \
+	mov.w	99f, tmp2	; \
+	add	tmp2, tmp 	; \
+	mov.l	@tmp, tmp2	; \
+	bra	98f		; \
+	 mov	#FUTEX_PRIVATE_FLAG, tmp ; \
+99:	.word	PRIVATE_FUTEX - TLS_PRE_TCB_SIZE ; \
+98:	extu.b	tmp, tmp	; \
+	xor	tmp, reg	; \
+	and	tmp2, reg	; \
+	mov	#FUTEX_WAIT_BITSET, tmp ; \
+	mov	#(FUTEX_CLOCK_REALTIME >> 8), tmp2; \
+	swap.b	tmp2, tmp2; \
+	or	tmp2, tmp; \
+	or	tmp, reg
 # endif
 # define LOAD_FUTEX_WAKE(reg,tmp,tmp2) \
 	stc	gbr, tmp	; \
@@ -193,12 +216,85 @@ __lll_lock_wait:
 	cfi_endproc
 	.size	__lll_lock_wait,.-__lll_lock_wait
 
+	/*      r5  (r8): futex
+		r7 (r11): flags
+		r6  (r9): timeout
+		r4 (r10): futex value
+	*/
 	.globl	__lll_timedlock_wait
 	.type	__lll_timedlock_wait,@function
 	.hidden	__lll_timedlock_wait
 	.align	5
 	cfi_startproc
 __lll_timedlock_wait:
+	mov.l	r12, @-r15
+	cfi_adjust_cfa_offset(4)
+	cfi_rel_offset (r12, 0)
+
+# ifndef __ASSUME_FUTEX_CLOCK_REALTIME
+	mov.l	.Lhave, r1
+#  ifdef PIC
+	mova	.Lgot, r0
+	mov.l	.Lgot, r12
+	add	r0, r12
+	add	r12, r1
+#  endif
+	mov.l	@r1, r0
+	tst	r0, r0
+	bt	.Lreltmo
+# endif
+
+	mov	r4, r2
+	mov	r5, r4
+	mov	r7, r5
+	mov	r6, r7
+	LOAD_FUTEX_WAIT_ABS (r5, r0, r1)
+
+	mov	#2, r6
+	cmp/eq	r6, r2
+	bf/s	2f
+	 mov	r2, r6
+
+1:
+	mov	#2, r6
+	mov	#-1, r1
+	mov	#SYS_futex, r3
+	extu.b	r3, r3
+	trapa	#0x16
+	SYSCALL_INST_PAD
+	mov	r0, r6
+
+2:
+	XCHG	(r2, @r4, r3)	/* NB:   lock is implied */
+
+	tst	r3, r3
+	bt/s	3f
+	 mov	r6, r0
+
+	cmp/eq	#-ETIMEDOUT, r0
+	bt	4f
+	cmp/eq	#-EINVAL, r0
+	bf	1b
+4:
+	neg	r0, r3
+3:
+	mov	r3, r0
+	rts
+	 mov.l	@r15+, r12
+
+	.align	2
+# ifdef PIC
+.Lgot:
+	.long	_GLOBAL_OFFSET_TABLE_
+.Lhave:
+	.long	__have_futex_clock_realtime@GOTOFF
+# else
+.Lhave:
+	.long	__have_futex_clock_realtime
+# endif
+
+# ifndef __ASSUME_FUTEX_CLOCK_REALTIME
+.Lreltmo:
 	/* Check for a valid timeout value.  */
 	mov.l	@(4,r6), r1
 	mov.l	.L1g, r0
@@ -290,12 +386,15 @@ __lll_timedlock_wait:
 	mov.l	@r15+, r8
 	mov.l	@r15+, r9
 	mov.l	@r15+, r10
+	mov.l	@r15+, r11
 	rts
-	 mov.l	@r15+, r11
+	 mov.l	@r15+, r12
 
 3:
+	mov.l	@r15+, r12
 	rts
 	 mov	#EINVAL, r0
+# endif
 	cfi_endproc
 
 .L1k:
diff --git a/nptl/sysdeps/unix/sysv/linux/sh/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/sh/lowlevellock.h
index e709667e54..853a2daf1b 100644
--- a/nptl/sysdeps/unix/sysv/linux/sh/lowlevellock.h
+++ b/nptl/sysdeps/unix/sysv/linux/sh/lowlevellock.h
@@ -1,4 +1,5 @@
-/* Copyright (C) 2003, 2004, 2006, 2007, 2008 Free Software Foundation, Inc.
+/* Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009
+   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
@@ -37,6 +38,9 @@
 #define FUTEX_WAIT_BITSET	9
 #define FUTEX_WAKE_BITSET	10
 #define FUTEX_PRIVATE_FLAG	128
+#define FUTEX_CLOCK_REALTIME	256
+
+#define FUTEX_BITSET_MATCH_ANY	0xffffffff
 
 #define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE	((4 << 24) | 1)