Security-222.tar.gz

[apple/security.git] / cdsa / cdsa_utilities / threading_internal.h

diff --git a/cdsa/cdsa_utilities/threading_internal.h b/cdsa/cdsa_utilities/threading_internal.h
deleted file mode 100644 (file)
index ea39eee..0000000
--- a/cdsa/cdsa_utilities/threading_internal.h
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
- * 
- * The contents of this file constitute Original Code as defined in and are
- * subject to the Apple Public Source License Version 1.2 (the 'License').
- * You may not use this file except in compliance with the License. Please obtain
- * a copy of the License at http://www.apple.com/publicsource and read it before
- * using this file.
- * 
- * This 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.
- */
-
-
-//
-// threading_internal - internal support classes and functions for threading implementation
-//
-#ifndef _H_THREADING_INTERNAL
-#define _H_THREADING_INTERNAL
-
-#include <Security/utilities.h>
-
-
-namespace Security {
-
-
-//
-// Architecture-specific atomic operation primitives.
-// AtomicWord is an integer type that works with these;
-// we'll assume that a pointer fits into it (using reinterpret_cast).
-//
-#if TARGET_CPU_PPC
-
-#define _HAVE_ATOMIC_OPERATIONS
-
-typedef unsigned int AtomicWord;
-
-inline AtomicWord atomicLoad(AtomicWord &atom)
-{
-    AtomicWord result;
-    asm volatile (
-        "0:    lwarx %0,0,%1 \n"
-        "      stwcx. %0,0,%1 \n"
-        "      bne- 0b"
-        : "=&r"(result)
-        : "b"(&atom)
-        : "cc"
-    );
-    return result;
-}
-
-inline AtomicWord atomicStore(AtomicWord &atom, AtomicWord newValue, AtomicWord oldValue)
-{
-    register bool result;
-    asm volatile (
-        "0:    lwarx %0,0,%1 \n"               // load and reserve -> %0
-        "      cmpw %0,%3 \n"          // compare to old
-        "      bne 1f \n"                              // fail if not equal
-        "      stwcx. %2,0,%1 \n"      // store and check
-        "      bne 0b \n"                              // retry if contended
-        "1:    "
-        : "=&r"(result)
-        : "b"(&atom), "r"(newValue), "r"(oldValue)
-        : "cc"
-    );
-    return result;
-}
-
-inline AtomicWord atomicOffset(AtomicWord &atom, int offset)
-{
-    AtomicWord result;
-    asm volatile (
-        "0:    lwarx %0,0,%1 \n"
-        "      add %0,%0,%2 \n"
-        "      stwcx. %0,0,%1 \n"
-        "      bne- 0b"
-        : "=&r"(result)
-        : "b"(&atom), "r"(offset)
-        : "cc"
-    );
-    return result;
-}
-
-inline AtomicWord atomicIncrement(AtomicWord &atom)
-{ return atomicOffset(atom, +1); }
-
-inline AtomicWord atomicDecrement(AtomicWord &atom)
-{ return atomicOffset(atom, -1); }
-
-#endif //TARGET_CPU_PPC
-
-} // end namespace Security
-
-#endif //_H_THREADING_INTERNAL