score: Add Processor_mask, etc.

1 files changed, 90 insertions, 0 deletions

diff --git a/cpukit/score/include/rtems/score/processormask.h b/cpukit/score/include/rtems/score/processormask.h
new file mode 100644
index 0000000000..5a78dd33c6
--- /dev/null
+++ b/cpukit/score/include/rtems/score/processormask.h
@@ -0,0 +1,90 @@
+/**
+ * @file
+ *
+ * @brief Processor Mask API
+ *
+ * @ingroup ScoreProcessorMask
+ */
+
+/*
+ * Copyright (c) 2016 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * 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_PROCESSORMASK_H
+#define _RTEMS_SCORE_PROCESSORMASK_H
+
+#include <rtems/score/cpu.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/**
+ * @defgroup ScoreProcessorMask Processor Mask
+ *
+ * @ingroup Score
+ *
+ * The processor mask provides a bit map large enough to provide one bit for
+ * each processor in the system.  It is a fixed size internal data type
+ * provided for efficiency in addition to the API level cpu_set_t.
+ *
+ * @{
+ */
+
+#define PROCESSOR_MASK_BITS_PER_FIELD 32
+
+#define PROCESSOR_MASK_FIELD_COUNT \
+  ( ( CPU_MAXIMUM_PROCESSORS + PROCESSOR_MASK_BITS_PER_FIELD - 1 ) \
+    / PROCESSOR_MASK_BITS_PER_FIELD )
+
+#define PROCESSOR_MASK_BIT( index ) \
+  (1UL << ( ( index ) % PROCESSOR_MASK_BITS_PER_FIELD ) )
+
+#define PROCESSOR_MASK_FIELD( index ) \
+  ( ( index ) / PROCESSOR_MASK_BITS_PER_FIELD )
+
+/**
+ * @brief A bit map consisting of 32-bit integer fields which is large enough
+ * to provide one bit for each processor in the system.
+ *
+ * Processor 0 corresponds to the bit 0 (least-significant) of the field 0 in
+ * the array, and so on.
+ */
+typedef uint32_t Processor_mask[ PROCESSOR_MASK_FIELD_COUNT ];
+
+RTEMS_INLINE_ROUTINE void _Processor_mask_Set( Processor_mask mask, uint32_t index )
+{
+  mask[ PROCESSOR_MASK_FIELD( index ) ] |= PROCESSOR_MASK_BIT( index );
+}
+
+RTEMS_INLINE_ROUTINE void _Processor_mask_Clear( Processor_mask mask, uint32_t index )
+{
+  mask[ PROCESSOR_MASK_FIELD( index ) ] &= ~PROCESSOR_MASK_BIT( index );
+}
+
+RTEMS_INLINE_ROUTINE bool _Processor_mask_Is_set(
+  const Processor_mask mask,
+  uint32_t index
+)
+{
+  return ( mask[ PROCESSOR_MASK_FIELD( index ) ]
+    & PROCESSOR_MASK_BIT( index ) ) != 0;
+}
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* _RTEMS_SCORE_PROCESSORMASK_H */