From 88ab1facc65dba10e06a5f9ba79191cba211db0f Mon Sep 17 00:00:00 2001
From: drepper <drepper>
Date: Mon, 10 Feb 2003 09:15:00 +0000
Subject: [PATCH] Definitions of atomic operations for lowlevel operations on
 Linux/SH.

---
 nptl/sysdeps/unix/sysv/linux/sh/lowlevel-atomic.h | 68 +++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 nptl/sysdeps/unix/sysv/linux/sh/lowlevel-atomic.h

diff --git a/nptl/sysdeps/unix/sysv/linux/sh/lowlevel-atomic.h b/nptl/sysdeps/unix/sysv/linux/sh/lowlevel-atomic.h
new file mode 100644
index 0000000000..3a80ec8e14
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/sh/lowlevel-atomic.h
@@ -0,0 +1,68 @@
+/* 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.  */
+
+#ifdef __ASSEMBLER__
+
+#define _IMP1 #1
+#define _IMM1 #-1
+#define _IMM6 #-6
+#define _IMM8 #-8
+
+#define	INC(mem, reg) \
+	.align	2; \
+	mova	99f, r0; \
+	mov	r15, r1; \
+	mov	_IMM6, r15; \
+98:	mov.l	mem, reg; \
+	add	_IMP1, reg; \
+	mov.l	reg, mem; \
+99:	mov	r1, r15
+
+#define	DEC(mem, reg) \
+	.align	2; \
+	mova	99f, r0; \
+	mov	r15, r1; \
+	mov	_IMM6, r15; \
+98:	mov.l	mem, reg; \
+	add	_IMM1, reg; \
+	mov.l	reg, mem; \
+99:	mov	r1, r15
+
+#define	XADD(reg, mem, old) \
+	.align	2; \
+	mova	99f, r0; \
+	mov	r15, r1; \
+	mov	_IMM6, r15; \
+98:	mov.l	mem, old; \
+	add	old, reg; \
+	mov.l	reg, mem; \
+99:	mov	r1, r15
+
+#define	CMPXCHG(reg, mem, new, old) \
+	.align	2; \
+	mova	99f, r0; \
+	nop; \
+	mov	r15, r1; \
+	mov	_IMM8, r15; \
+98:	mov.l	mem, old; \
+	cmp/eq	old, reg; \
+	bf	99f; \
+	mov.l	new, mem; \
+99:	mov	r1, r15
+
+#endif  /* __ASSEMBLER__ */
-- 
2.11.0