Libc-763.11.tar.gz

[apple/libc.git] / i386 / sys / spinlocks.c

diff --git a/i386/sys/spinlocks.c b/i386/sys/spinlocks.c
new file mode 100644 (file)
index 0000000..8bc85a8
--- /dev/null
+++ b/i386/sys/spinlocks.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#include <machine/cpu_capabilities.h>
+#include <platfunc.h>
+
+#define        RESOLVER_UP_MP(symbol)  \
+       PLATFUNC_DESCRIPTOR_PROTOTYPE(symbol, up); \
+       PLATFUNC_DESCRIPTOR_PROTOTYPE(symbol, mp); \
+       static const platfunc_descriptor* symbol ## _platfunc_descriptors[] = { \
+               PLATFUNC_DESCRIPTOR_REFERENCE(symbol, mp), \
+               PLATFUNC_DESCRIPTOR_REFERENCE(symbol, up), \
+               0 \
+       }; \
+       void* symbol ## _chooser() __asm__("_" #symbol); \
+       void* symbol ## _chooser() { \
+               __asm__(".symbol_resolver _" #symbol); \
+               return find_platform_function((const platfunc_descriptor**) symbol ## _platfunc_descriptors); \
+       }
+
+RESOLVER_UP_MP(OSSpinLockTry)
+RESOLVER_UP_MP(_spin_lock_try)
+RESOLVER_UP_MP(OSSpinLockLock)
+RESOLVER_UP_MP(_spin_lock)
+RESOLVER_UP_MP(spin_lock)