[src/trunk]: src/sys/arch/arm/arm32 non-inline version of atomic_{set, clear}_...

[bsh <bsh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f8ff09b5a741
branches:  trunk
changeset: 538405:f8ff09b5a741
user:      bsh <bsh%NetBSD.org@localhost>
date:      Sat Oct 19 12:46:57 2002 +0000

description:
non-inline version of atomic_{set,clear}_bit(), defined when
ATOMIC_SET_BIT_NONINLINE_REQUIRED is defined.
(extracted from arm/arm32/locore.S)

diffstat:

 sys/arch/arm/arm32/atomic.S |  71 +++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 71 insertions(+), 0 deletions(-)

diffs (75 lines):

diff -r 459cdad782e7 -r f8ff09b5a741 sys/arch/arm/arm32/atomic.S
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm/arm32/atomic.S       Sat Oct 19 12:46:57 2002 +0000
@@ -0,0 +1,71 @@
+/*     $NetBSD: atomic.S,v 1.1 2002/10/19 12:46:57 bsh Exp $ */
+
+/*
+ * Copyright (C) 1994-1997 Mark Brinicombe
+ * Copyright (C) 1994 Brini
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by Brini.
+ * 4. The name of Brini may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL BRINI BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "assym.h"
+#include <machine/asm.h>
+#include <machine/atomic.h>
+#include <machine/cpu.h>
+       
+#ifdef ATOMIC_SET_BIT_NONINLINE_REQUIRED
+/*
+ * Atomic bit set and clear functions
+ */
+
+#undef atomic_set_bit
+ENTRY(atomic_set_bit)
+       mrs     r2, cpsr
+       orr     r3, r2, #(I32_bit)
+       msr     cpsr_all, r3
+
+       ldr     r3, [r0]
+       orr     r3, r3, r1
+       str     r3, [r0]
+
+       msr     cpsr_all, r2
+       mov     pc, lr
+
+
+#undef atomic_clear_bit
+ENTRY(atomic_clear_bit)
+       mrs     r2, cpsr
+       orr     r3, r2, #(I32_bit)
+       msr     cpsr_all, r3
+
+       ldr     r3, [r0]
+       bic     r3, r3, r1
+       str     r3, [r0]
+
+       msr     cpsr_all, r2
+       mov     pc, lr
+
+#endif /* ATOMIC_SET_BIT_NONINLINE_REQUIRED */