Module Name: src
Committed By: matt
Date: Thu Aug 15 22:42:50 UTC 2013
Added Files:
src/common/lib/libc/arch/arm/atomic: atomic_simplelock.c
Log Message:
When compiling for Thumb1, the swp instruction is not availble. So this
stub is added to provide __cpu_simple_lock and __cpu_simple_lock_try via
thumb interwork support. It is compiled with -mno-thumb.
To generate a diff of this commit:
cvs rdiff -u -r0 -r1.1 \
src/common/lib/libc/arch/arm/atomic/atomic_simplelock.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Added files:
Index: src/common/lib/libc/arch/arm/atomic/atomic_simplelock.c
diff -u /dev/null src/common/lib/libc/arch/arm/atomic/atomic_simplelock.c:1.1
--- /dev/null Thu Aug 15 22:42:50 2013
+++ src/common/lib/libc/arch/arm/atomic/atomic_simplelock.c Thu Aug 15 22:42:50 2013
@@ -0,0 +1,66 @@
+/*-
+ * Copyright (c) 2013 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Matt Thomas of 3am Software Foundry.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``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 THE FOUNDATION OR CONTRIBUTORS
+ * 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 <sys/cdefs.h>
+__RCSID("$NetBSD: atomic_simplelock.c,v 1.1 2013/08/15 22:42:50 matt Exp $");
+
+#include <sys/types.h>
+/*
+ * We need to use the inlines so redefine out of the way.
+ */
+#define __cpu_simple_lock __arm_simple_lock
+#define __cpu_simple_lock_try __arm_simple_lock_try
+#include <arm/lock.h>
+/*
+ * Now get rid of them.
+ */
+#undef __cpu_simple_lock
+#undef __cpu_simple_lock_try
+
+#if !defined(_ARM_ARCH_T2)
+/*
+ * Since we overrode lock.h we have to provide these ourselves.
+ */
+__dso_hidden void __cpu_simple_lock(__cpu_simple_lock_t *);
+__dso_hidden int __cpu_simple_lock_try(__cpu_simple_lock_t *);
+
+void
+__cpu_simple_lock(__cpu_simple_lock_t *alp)
+{
+
+ __arm_simple_lock(alp);
+}
+
+int
+__cpu_simple_lock_try(__cpu_simple_lock_t *alp)
+{
+
+ return __arm_simple_lock_try(alp);
+}
+#endif
