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diff --git a/cpukit/include/rtems/score/processormask.h b/cpukit/include/rtems/score/processormask.h
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+++ b/cpukit/include/rtems/score/processormask.h
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+/**
+ * @file
+ *
+ * @brief Processor Mask API
+ *
+ * @ingroup ScoreProcessorMask
+ */
+
+/*
+ * Copyright (c) 2016, 2017 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>
+
+#include <sys/cpuset.h>
+
+#include <strings.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.
+ *
+ * @{
+ */
+
+/**
+ * @brief A bit map which is large enough to provide one bit for each processor
+ * in the system.
+ */
+typedef BITSET_DEFINE( Processor_mask, CPU_MAXIMUM_PROCESSORS ) Processor_mask;
+
+RTEMS_INLINE_ROUTINE void _Processor_mask_Zero( Processor_mask *mask )
+{
+  BIT_ZERO( CPU_MAXIMUM_PROCESSORS, mask );
+}
+
+RTEMS_INLINE_ROUTINE bool _Processor_mask_Is_zero( const Processor_mask *mask )
+{
+  return BIT_EMPTY( CPU_MAXIMUM_PROCESSORS, mask );
+}
+
+RTEMS_INLINE_ROUTINE void _Processor_mask_Fill( Processor_mask *mask )
+{
+  BIT_FILL( CPU_MAXIMUM_PROCESSORS, mask );
+}
+
+RTEMS_INLINE_ROUTINE void _Processor_mask_Assign(
+  Processor_mask *dst, const Processor_mask *src
+)
+{
+  BIT_COPY( CPU_MAXIMUM_PROCESSORS, src, dst );
+}
+
+RTEMS_INLINE_ROUTINE void _Processor_mask_Set(
+  Processor_mask *mask,
+  uint32_t        index
+)
+{
+  BIT_SET( CPU_MAXIMUM_PROCESSORS, index, mask );
+}
+
+RTEMS_INLINE_ROUTINE void _Processor_mask_Clear(
+  Processor_mask *mask,
+  uint32_t        index
+)
+{
+  BIT_CLR( CPU_MAXIMUM_PROCESSORS, index, mask );
+}
+
+RTEMS_INLINE_ROUTINE bool _Processor_mask_Is_set(
+  const Processor_mask *mask,
+  uint32_t              index
+)
+{
+  return BIT_ISSET( CPU_MAXIMUM_PROCESSORS, index, mask );
+}
+
+/**
+ * @brief Returns true if the processor sets a and b are equal, and false
+ * otherwise.
+ */
+RTEMS_INLINE_ROUTINE bool _Processor_mask_Is_equal(
+  const Processor_mask *a,
+  const Processor_mask *b
+)
+{
+  return !BIT_CMP( CPU_MAXIMUM_PROCESSORS, a, b );
+}
+
+/**
+ * @brief Returns true if the intersection of the processor sets a and b is
+ * non-empty, and false otherwise.
+ */
+RTEMS_INLINE_ROUTINE bool _Processor_mask_Has_overlap(
+  const Processor_mask *a,
+  const Processor_mask *b
+)
+{
+  return BIT_OVERLAP( CPU_MAXIMUM_PROCESSORS, a, b );
+}
+
+/**
+ * @brief Returns true if the processor set small is a subset of processor set
+ * big, and false otherwise.
+ */
+RTEMS_INLINE_ROUTINE bool _Processor_mask_Is_subset(
+  const Processor_mask *big,
+  const Processor_mask *small
+)
+{
+  return BIT_SUBSET( CPU_MAXIMUM_PROCESSORS, big, small );
+}
+
+/**
+ * @brief Performs a bitwise a = b & c.
+ */
+RTEMS_INLINE_ROUTINE void _Processor_mask_And(
+  Processor_mask       *a,
+  const Processor_mask *b,
+  const Processor_mask *c
+)
+{
+  BIT_AND2( CPU_MAXIMUM_PROCESSORS, a, b, c );
+}
+
+/**
+ * @brief Performs a bitwise a = b & ~c.
+ */
+RTEMS_INLINE_ROUTINE void _Processor_mask_Nand(
+  Processor_mask       *a,
+  const Processor_mask *b,
+  const Processor_mask *c
+)
+{
+  BIT_NAND2( CPU_MAXIMUM_PROCESSORS, a, b, c );
+}
+
+/**
+ * @brief Performs a bitwise a = b | c.
+ */
+RTEMS_INLINE_ROUTINE void _Processor_mask_Or(
+  Processor_mask       *a,
+  const Processor_mask *b,
+  const Processor_mask *c
+)
+{
+  BIT_OR2( CPU_MAXIMUM_PROCESSORS, a, b, c );
+}
+
+/**
+ * @brief Performs a bitwise a = b ^ c.
+ */
+RTEMS_INLINE_ROUTINE void _Processor_mask_Xor(
+  Processor_mask       *a,
+  const Processor_mask *b,
+  const Processor_mask *c
+)
+{
+  BIT_XOR2( CPU_MAXIMUM_PROCESSORS, a, b, c );
+}
+
+RTEMS_INLINE_ROUTINE uint32_t _Processor_mask_Count( const Processor_mask *a )
+{
+  return (uint32_t) BIT_COUNT( CPU_MAXIMUM_PROCESSORS, a );
+}
+
+RTEMS_INLINE_ROUTINE uint32_t _Processor_mask_Find_last_set( const Processor_mask *a )
+{
+  return (uint32_t) BIT_FLS( CPU_MAXIMUM_PROCESSORS, a );
+}
+
+/**
+ * @brief Returns the subset of 32 processors containing the specified index as
+ * an unsigned 32-bit integer.
+ */
+RTEMS_INLINE_ROUTINE uint32_t _Processor_mask_To_uint32_t(
+  const Processor_mask *mask,
+  uint32_t              index
+)
+{
+  long bits = mask->__bits[ __bitset_words( index ) ];
+
+  return (uint32_t) (bits >> (32 * (index % _BITSET_BITS) / 32));
+}
+
+/**
+ * @brief Creates a processor set from an unsigned 32-bit integer relative to
+ * the specified index.
+ */
+RTEMS_INLINE_ROUTINE void _Processor_mask_From_uint32_t(
+  Processor_mask *mask,
+  uint32_t        bits,
+  uint32_t        index
+)
+{
+  _Processor_mask_Zero( mask );
+  mask->__bits[ __bitset_words( index ) ] = ((long) bits) << (32 * (index % _BITSET_BITS) / 32);
+}
+
+/**
+ * @brief Creates a processor set from the specified index.
+ */
+RTEMS_INLINE_ROUTINE void _Processor_mask_From_index(
+  Processor_mask *mask,
+  uint32_t        index
+)
+{
+  BIT_SETOF( CPU_MAXIMUM_PROCESSORS, (int) index, mask );
+}
+
+typedef enum {
+  PROCESSOR_MASK_COPY_LOSSLESS,
+  PROCESSOR_MASK_COPY_PARTIAL_LOSS,
+  PROCESSOR_MASK_COPY_COMPLETE_LOSS,
+  PROCESSOR_MASK_COPY_INVALID_SIZE
+} Processor_mask_Copy_status;
+
+RTEMS_INLINE_ROUTINE bool _Processor_mask_Is_at_most_partial_loss(
+  Processor_mask_Copy_status status
+)
+{
+  return (unsigned int) status <= PROCESSOR_MASK_COPY_PARTIAL_LOSS;
+}
+
+Processor_mask_Copy_status _Processor_mask_Copy(
+  long       *dst,
+  size_t      dst_size,
+  const long *src,
+  size_t      src_size
+);
+
+RTEMS_INLINE_ROUTINE Processor_mask_Copy_status _Processor_mask_To_cpu_set_t(
+  const Processor_mask *src,
+  size_t                dst_size,
+  cpu_set_t            *dst
+)
+{
+  return _Processor_mask_Copy(
+    &dst->__bits[ 0 ],
+    dst_size,
+    &src->__bits[ 0 ],
+    sizeof( *src )
+  );
+}
+
+RTEMS_INLINE_ROUTINE Processor_mask_Copy_status _Processor_mask_From_cpu_set_t(
+  Processor_mask  *dst,
+  size_t           src_size,
+  const cpu_set_t *src
+)
+{
+  return _Processor_mask_Copy(
+    &dst->__bits[ 0 ],
+    sizeof( *dst ),
+    &src->__bits[ 0 ],
+    src_size
+  );
+}
+
+extern const Processor_mask _Processor_mask_The_one_and_only;
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* _RTEMS_SCORE_PROCESSORMASK_H */