1 files changed, 174 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/sh/lowlevelmutex.S b/nptl/sysdeps/unix/sysv/linux/sh/lowlevelmutex.S
new file mode 100644
index 0000000000..8a837de7b1
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/sh/lowlevelmutex.S
@@ -0,0 +1,174 @@
+/* Copyright (C) 2003 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
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sysdep.h>
+#include "lowlevel-atomic.h"
+
+	.text
+
+#define SYS_gettimeofday	__NR_gettimeofday
+#define SYS_futex		240
+#define FUTEX_WAIT		0
+#define FUTEX_WAKE		1
+
+#define EWOULDBLOCK		11
+#define EINVAL			22
+#define ETIMEDOUT		110
+
+
+	.globl	__lll_mutex_lock_wait
+	.type	__lll_mutex_lock_wait,@function
+	.hidden	__lll_mutex_lock_wait
+	.align	5
+__lll_mutex_lock_wait:
+	mov	r4, r6
+	mov	r5, r4
+	mov	#0, r7		/* No timeout.  */
+	mov	#FUTEX_WAIT, r5
+1:
+	add	#1, r6		/* account for the preceeded xadd.  */
+	mov	#SYS_futex, r3
+	extu.b	r3, r3
+	trapa	#0x14
+	SYSCALL_INST_PAD
+
+	mov	#1, r3
+	XADD (r3, @r4, r6)
+	tst	r6, r6
+	bf	1b
+	mov	#2, r1
+	mov.l	r1, @r4
+	ret
+	 mov	#0, r0
+	.size	__lll_mutex_lock_wait,.-__lll_mutex_lock_wait
+
+
+	.globl	__lll_mutex_timedlock_wait
+	.type	__lll_mutex_timedlock_wait,@function
+	.hidden	__lll_mutex_timedlock_wait
+	.align	5
+__lll_mutex_timedlock_wait:
+	/* Check for a valid timeout value.  */
+	mov.l	@(4,r6), r1
+	mov.l	.L1g, r0
+	cmp/hs	r0, r1
+	bt	3f
+
+	mov.l	r10, @-r15
+	mov.l	r9, @-r15
+	mov.l	r8, @-r15
+	mov	r5, r8
+	mov	r6, r9
+	mov	r4, r10
+	add	#1, r10
+
+	/* Stack frame for the timespec and timeval structs.  */
+	add	#-8, r15
+
+1:
+	/* Get current time.  */
+	mov	r15, r4
+	mov	#0, r5
+	mov	#SYS_gettimeofday, r3
+	trapa	#0x12
+	SYSCALL_INST_PAD
+
+	/* Compute relative timeout.  */
+	mov.l	@(4,r15), r0
+	mov.w	.L1k, r1
+	dmulu.l	r0, r1		/* Micro seconds to nano seconds.  */
+	mov.l	@r9, r2
+	mov.l	@(4,r9), r3
+	mov.l	@r15, r0
+	sts	macl, r1
+	sub	r0, r2
+	clrt
+	subc	r1, r3
+	bf	4f
+	mov.l	.L1g, r1
+	add	r1, r3
+	add	#-1, r2
+4:
+	cmp/pz	r2
+	bf	5f		/* Time is already up.  */
+
+	mov.l	r2, @r15	/* Store relative timeout.  */
+	mov.l	r3, @(4,r15)
+
+	mov	r8, r4
+	mov	#FUTEX_WAIT, r5
+	mov	r10, r6
+	mov	r15, r7
+	mov	#SYS_futex, r3
+	extu.b	r3, r3
+	trapa	#0x14
+	SYSCALL_INST_PAD
+
+	mov	#1, r3
+	XADD (r3, @r8, r10)
+	tst	r10, r10
+	bf	7f
+
+	mov	#2, r1
+	mov.l	r1, @r8
+	mov	#0, r0
+6:
+	add	#8, r15
+	mov.l	@r15+, r8
+	mov.l	@r15+, r9
+	rts
+	 mov.l	@r15+, r10
+7:
+	/* Check whether the time expired.  */
+	mov	#-ETIMEDOUT, r1
+	cmp/eq	r0, r1
+	bt	5f
+	bra	1b
+	 nop
+3:
+	rts
+	 mov	#EINVAL, r0
+5:
+	bra	6b
+	 mov	#ETIMEDOUT, r0
+
+.L1k:
+	.word	1000
+	.align	2
+.L1g:
+	.long	1000000000
+
+	.size	__lll_mutex_timedlock_wait,.-__lll_mutex_timedlock_wait
+
+
+	.globl	__lll_mutex_unlock_wake
+	.type	__lll_mutex_unlock_wake,@function
+	.hidden	__lll_mutex_unlock_wake
+	.align	5
+__lll_mutex_unlock_wake:
+	mov	#FUTEX_WAKE, r5
+	mov	#1, r6		/* Wake one thread.  */
+	mov	#0, r7
+	mov.l	r7, @r4		/* Stores 0.  */
+	mov	#SYS_futex, r3
+	extu.b	r3, r3
+	trapa	#0x14
+	SYSCALL_INST_PAD
+	rts
+	 nop
+	.size	__lll_mutex_unlock_wake,.-__lll_mutex_unlock_wake