summaryrefslogtreecommitdiffstats
path: root/cpukit/include/rtems/score/atomic.h
diff options
context:
space:
mode:
authorChris Johns <chrisj@rtems.org>2017-12-23 18:18:56 +1100
committerSebastian Huber <sebastian.huber@embedded-brains.de>2018-01-25 08:45:26 +0100
commit2afb22b7e1ebcbe40373ff7e0efae7d207c655a9 (patch)
tree44759efe9374f13200a97e96d91bd9a2b7e5ce2a /cpukit/include/rtems/score/atomic.h
parentMAINTAINERS: Add myself to Write After Approval. (diff)
downloadrtems-2afb22b7e1ebcbe40373ff7e0efae7d207c655a9.tar.bz2
Remove make preinstall
A speciality of the RTEMS build system was the make preinstall step. It copied header files from arbitrary locations into the build tree. The header files were included via the -Bsome/build/tree/path GCC command line option. This has at least seven problems: * The make preinstall step itself needs time and disk space. * Errors in header files show up in the build tree copy. This makes it hard for editors to open the right file to fix the error. * There is no clear relationship between source and build tree header files. This makes an audit of the build process difficult. * The visibility of all header files in the build tree makes it difficult to enforce API barriers. For example it is discouraged to use BSP-specifics in the cpukit. * An introduction of a new build system is difficult. * Include paths specified by the -B option are system headers. This may suppress warnings. * The parallel build had sporadic failures on some hosts. This patch removes the make preinstall step. All installed header files are moved to dedicated include directories in the source tree. Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc, etc. Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g. erc32, imx, qoriq, etc. The new cpukit include directories are: * cpukit/include * cpukit/score/cpu/@RTEMS_CPU@/include * cpukit/libnetworking The new BSP include directories are: * bsps/include * bsps/@RTEMS_CPU@/include * bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include There are build tree include directories for generated files. The include directory order favours the most general header file, e.g. it is not possible to override general header files via the include path order. The "bootstrap -p" option was removed. The new "bootstrap -H" option should be used to regenerate the "headers.am" files. Update #3254.
Diffstat (limited to 'cpukit/include/rtems/score/atomic.h')
-rw-r--r--cpukit/include/rtems/score/atomic.h156
1 files changed, 156 insertions, 0 deletions
diff --git a/cpukit/include/rtems/score/atomic.h b/cpukit/include/rtems/score/atomic.h
new file mode 100644
index 0000000000..526926926f
--- /dev/null
+++ b/cpukit/include/rtems/score/atomic.h
@@ -0,0 +1,156 @@
+/**
+ * @file
+ *
+ * @ingroup ScoreAtomic
+ *
+ * @brief Atomic Operations API
+ */
+
+/*
+ * COPYRIGHT (c) 2012-2013 Deng Hengyi.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef _RTEMS_SCORE_ATOMIC_H
+#define _RTEMS_SCORE_ATOMIC_H
+
+#include <rtems/score/cpuatomic.h>
+
+/**
+ * @defgroup ScoreAtomic Atomic Operations
+ *
+ * @ingroup Score
+ *
+ * @brief Support for atomic operations.
+ *
+ * Atomic operations can be used to implement low-level synchronization
+ * primitives on SMP systems, like spin locks. All atomic operations are
+ * defined in terms of C11 (ISO/IEC 9899:2011) or C++11 (ISO/IEC 14882:2011).
+ * For documentation use the standard documents.
+ *
+ * @{
+ */
+
+typedef CPU_atomic_Uint Atomic_Uint;
+
+typedef CPU_atomic_Ulong Atomic_Ulong;
+
+typedef CPU_atomic_Uintptr Atomic_Uintptr;
+
+typedef CPU_atomic_Flag Atomic_Flag;
+
+typedef CPU_atomic_Order Atomic_Order;
+
+#define ATOMIC_ORDER_RELAXED CPU_ATOMIC_ORDER_RELAXED
+
+#define ATOMIC_ORDER_ACQUIRE CPU_ATOMIC_ORDER_ACQUIRE
+
+#define ATOMIC_ORDER_RELEASE CPU_ATOMIC_ORDER_RELEASE
+
+#define ATOMIC_ORDER_ACQ_REL CPU_ATOMIC_ORDER_ACQ_REL
+
+#define ATOMIC_ORDER_SEQ_CST CPU_ATOMIC_ORDER_SEQ_CST
+
+#define ATOMIC_INITIALIZER_UINT( value ) CPU_ATOMIC_INITIALIZER_UINT( value )
+
+#define ATOMIC_INITIALIZER_ULONG( value ) CPU_ATOMIC_INITIALIZER_ULONG( value )
+
+#define ATOMIC_INITIALIZER_UINTPTR( value ) CPU_ATOMIC_INITIALIZER_UINTPTR( value )
+
+#define ATOMIC_INITIALIZER_FLAG CPU_ATOMIC_INITIALIZER_FLAG
+
+#define _Atomic_Fence( order ) _CPU_atomic_Fence( order )
+
+#define _Atomic_Init_uint( obj, desired ) \
+ _CPU_atomic_Init_uint( obj, desired )
+
+#define _Atomic_Init_ulong( obj, desired ) \
+ _CPU_atomic_Init_ulong( obj, desired )
+
+#define _Atomic_Init_uintptr( obj, desired ) \
+ _CPU_atomic_Init_uintptr( obj, desired )
+
+#define _Atomic_Load_uint( obj, order ) \
+ _CPU_atomic_Load_uint( obj, order )
+
+#define _Atomic_Load_ulong( obj, order ) \
+ _CPU_atomic_Load_ulong( obj, order )
+
+#define _Atomic_Load_uintptr( obj, order ) \
+ _CPU_atomic_Load_uintptr( obj, order )
+
+#define _Atomic_Store_uint( obj, desr, order ) \
+ _CPU_atomic_Store_uint( obj, desr, order )
+
+#define _Atomic_Store_ulong( obj, desr, order ) \
+ _CPU_atomic_Store_ulong( obj, desr, order )
+
+#define _Atomic_Store_uintptr( obj, desr, order ) \
+ _CPU_atomic_Store_uintptr( obj, desr, order )
+
+#define _Atomic_Fetch_add_uint( obj, arg, order ) \
+ _CPU_atomic_Fetch_add_uint( obj, arg, order )
+
+#define _Atomic_Fetch_add_ulong( obj, arg, order ) \
+ _CPU_atomic_Fetch_add_ulong( obj, arg, order )
+
+#define _Atomic_Fetch_add_uintptr( obj, arg, order ) \
+ _CPU_atomic_Fetch_add_uintptr( obj, arg, order )
+
+#define _Atomic_Fetch_sub_uint( obj, arg, order ) \
+ _CPU_atomic_Fetch_sub_uint( obj, arg, order )
+
+#define _Atomic_Fetch_sub_ulong( obj, arg, order ) \
+ _CPU_atomic_Fetch_sub_ulong( obj, arg, order )
+
+#define _Atomic_Fetch_sub_uintptr( obj, arg, order ) \
+ _CPU_atomic_Fetch_sub_uintptr( obj, arg, order )
+
+#define _Atomic_Fetch_or_uint( obj, arg, order ) \
+ _CPU_atomic_Fetch_or_uint( obj, arg, order )
+
+#define _Atomic_Fetch_or_ulong( obj, arg, order ) \
+ _CPU_atomic_Fetch_or_ulong( obj, arg, order )
+
+#define _Atomic_Fetch_or_uintptr( obj, arg, order ) \
+ _CPU_atomic_Fetch_or_uintptr( obj, arg, order )
+
+#define _Atomic_Fetch_and_uint( obj, arg, order ) \
+ _CPU_atomic_Fetch_and_uint( obj, arg, order )
+
+#define _Atomic_Fetch_and_ulong( obj, arg, order ) \
+ _CPU_atomic_Fetch_and_ulong( obj, arg, order )
+
+#define _Atomic_Fetch_and_uintptr( obj, arg, order ) \
+ _CPU_atomic_Fetch_and_uintptr( obj, arg, order )
+
+#define _Atomic_Exchange_uint( obj, desr, order ) \
+ _CPU_atomic_Exchange_uint( obj, desr, order )
+
+#define _Atomic_Exchange_ulong( obj, desr, order ) \
+ _CPU_atomic_Exchange_ulong( obj, desr, order )
+
+#define _Atomic_Exchange_uintptr( obj, desr, order ) \
+ _CPU_atomic_Exchange_uintptr( obj, desr, order )
+
+#define _Atomic_Compare_exchange_uint( obj, expected, desired, succ, fail ) \
+ _CPU_atomic_Compare_exchange_uint( obj, expected, desired, succ, fail )
+
+#define _Atomic_Compare_exchange_ulong( obj, expected, desired, succ, fail ) \
+ _CPU_atomic_Compare_exchange_ulong( obj, expected, desired, succ, fail )
+
+#define _Atomic_Compare_exchange_uintptr( obj, expected, desired, succ, fail ) \
+ _CPU_atomic_Compare_exchange_uintptr( obj, expected, desired, succ, fail )
+
+#define _Atomic_Flag_clear( obj, order ) \
+ _CPU_atomic_Flag_clear( obj, order )
+
+#define _Atomic_Flag_test_and_set( obj, order ) \
+ _CPU_atomic_Flag_test_and_set( obj, order )
+
+/** @} */
+
+#endif /* _RTEMS_SCORE_ATOMIC_H */