score: Improve C/C++ standard compatibility

The processor mask implementation uses flsl() from <strings.h> which is
only BSD visible.  Move the implementation to a separate header file to
hide it from the API level.  This fixes build errors with GCC 14.

3 files changed, 439 insertions, 379 deletions

diff --git a/cpukit/include/rtems/score/processormask.h b/cpukit/include/rtems/score/processormask.h
index ce23f6c10d..71ed37cd0e 100644
--- a/cpukit/include/rtems/score/processormask.h
+++ b/cpukit/include/rtems/score/processormask.h
@@ -39,9 +39,7 @@
 
 #include <rtems/score/cpu.h>
 
-#include <sys/cpuset.h>
-
-#include <strings.h>
+#include <sys/_bitset.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -123,381 +121,6 @@ extern "C" {
  */
 typedef __BITSET_DEFINE( Processor_mask, CPU_MAXIMUM_PROCESSORS ) Processor_mask;
 
-/**
- * @brief Sets the bits of the mask to zero, also considers CPU_MAXIMUM_PROCESSORS.
- *
- * @param[out] mask The mask to set to zero.
- */
-static inline void _Processor_mask_Zero( Processor_mask *mask )
-{
-  __BIT_ZERO( CPU_MAXIMUM_PROCESSORS, mask );
-}
-
-/**
- * @brief Checks if the mask is zero, also considers CPU_MAXIMUM_PROCESSORS.
- *
- * @param mask The mask to check whether is is zero
- *
- * @retval true The mask is zero.
- * @retval false The mask is not zero.
- */
-static inline bool _Processor_mask_Is_zero( const Processor_mask *mask )
-{
-  return __BIT_EMPTY( CPU_MAXIMUM_PROCESSORS, mask );
-}
-
-/**
- * @brief Fills the mask, also considers CPU_MAXIMUM_PROCESSORS.
- *
- * @param[out] mask The mask to fill
- */
-static inline void _Processor_mask_Fill( Processor_mask *mask )
-{
-  __BIT_FILL( CPU_MAXIMUM_PROCESSORS, mask );
-}
-
-/**
- * @brief Copies the mask to another mask, also considers CPU_MAXIMUM_PROCESSORS.
- *
- * @param[out] dst The mask to copy @a src to.
- * @param src The mask to copy to @a dst.
- */
-static inline void _Processor_mask_Assign(
-  Processor_mask *dst, const Processor_mask *src
-)
-{
-  __BIT_COPY( CPU_MAXIMUM_PROCESSORS, src, dst );
-}
-
-/**
- * @brief Sets the specified index bit of the mask.
- *
- * @param[out] mask The mask to set the bit of.
- * @param index The index of the bit that shall be set.
- */
-static inline void _Processor_mask_Set(
-  Processor_mask *mask,
-  uint32_t        index
-)
-{
-  __BIT_SET( CPU_MAXIMUM_PROCESSORS, index, mask );
-}
-
-/**
- * @brief Clears the specified index bit of the mask.
- *
- * @param[out] mask The mask to clear the bit of.
- * @param index The index of the bit that shall be cleared.
- */
-static inline void _Processor_mask_Clear(
-  Processor_mask *mask,
-  uint32_t        index
-)
-{
-  __BIT_CLR( CPU_MAXIMUM_PROCESSORS, index, mask );
-}
-
-/**
- * @brief Checks if the specified index bit of the mask is set.
- *
- * @param mask The mask to check if the specified bit is set.
- * @param index The index of the bit that is checked.
- *
- * @retval true The specified index bit is set.
- * @retval false The specified index bit is not set.
- */
-static inline bool _Processor_mask_Is_set(
-  const Processor_mask *mask,
-  uint32_t              index
-)
-{
-  return __BIT_ISSET( CPU_MAXIMUM_PROCESSORS, index, mask );
-}
-
-/**
- * @brief Checks if the processor sets a and b are equal.
- *
- * @param a The first processor set.
- * @param b The seconde processor set.
- *
- * @retval true The processor sets a and b are equal.
- * @retval false The processor sets a and b are not equal.
- */
-static inline bool _Processor_mask_Is_equal(
-  const Processor_mask *a,
-  const Processor_mask *b
-)
-{
-  return !__BIT_CMP( CPU_MAXIMUM_PROCESSORS, a, b );
-}
-
-/**
- * @brief Checks if the intersection of the processor sets a and b is
- * non-empty.
- *
- * @param a The first processor set.
- * @param b The second processor set.
- *
- * @retval true The intersection of the processor sets a and b is non-empty.
- * @retval false The intersection of the processor sets a and b is empty.
- */
-static inline bool _Processor_mask_Has_overlap(
-  const Processor_mask *a,
-  const Processor_mask *b
-)
-{
-  return __BIT_OVERLAP( CPU_MAXIMUM_PROCESSORS, a, b );
-}
-
-/**
- * @brief Checks if the processor set small is a subset of processor set
- * big.
- *
- * @param big The bigger processor set.
- * @param small The smaller processor set.
- *
- * @retval true @a small is a subset of @a big.
- * @retval false @a small is not a subset of @a big.
- */
-static inline 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.
- *
- * @param[out] a The processor mask that is set by this operation.
- * @param b The first parameter of the AND-operation.
- * @param c The second parameter of the AND-operation.
- */
-static inline 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.
- *
- * @param[out] a The processor mask that is set by this operation.
- * @param b The first parameter of the OR-operation.
- * @param c The second parameter of the OR-operation.
- */
-static inline 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.
- *
- * @param[out] a The processor mask that is set by this operation.
- * @param b The first parameter of the XOR-operation.
- * @param c The second parameter of the XOR-operation.
- */
-static inline void _Processor_mask_Xor(
-  Processor_mask       *a,
-  const Processor_mask *b,
-  const Processor_mask *c
-)
-{
-  __BIT_XOR2( CPU_MAXIMUM_PROCESSORS, a, b, c );
-}
-
-/**
- * @brief Gets the number of set bits in the processor mask.
- *
- * @param a The processor mask of which the set bits are counted.
- *
- * @return The number of set bits in @a a.
- */
-static inline uint32_t _Processor_mask_Count( const Processor_mask *a )
-{
-  return (uint32_t) __BIT_COUNT( CPU_MAXIMUM_PROCESSORS, a );
-}
-
-/**
- * @brief Finds the last set of the processor mask.
- *
- * @param a The processor mask wo find the last set of.
- *
- * @return The last set of @a a.
- */
-static inline 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.
- *
- * @param mask The processor mask.
- * @param index The specified index.
- *
- * @return The subset containing the specified index as an unsigned 32-bit integer.
- */
-static inline uint32_t _Processor_mask_To_uint32_t(
-  const Processor_mask *mask,
-  uint32_t              index
-)
-{
-  long bits = mask->__bits[ index / _BITSET_BITS ];
-
-  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.
- *
- * @param[out] mask The mask that is created.
- * @param bits The bits for creating the mask.
- * @param index The index to which the mask is relative.
- */
-static inline 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.
- *
- * @param[out] The mask that is created.
- * @param index The specified index.
- */
-static inline 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;
-
-/**
- * @brief Checks if the copy status guarantees at most partial loss.
- *
- * @param status The copy status to check.
- *
- * @retval true At most partial loss can be guaranteed.
- * @retval false The status indicates more than partial loss.
- */
-static inline bool _Processor_mask_Is_at_most_partial_loss(
-  Processor_mask_Copy_status status
-)
-{
-  return (unsigned int) status <= PROCESSOR_MASK_COPY_PARTIAL_LOSS;
-}
-
-/**
- * @brief Copies one mask to another.
- *
- * @param[out] dst The destination of the copy operation.
- * @param dst_size The size of @a dst.
- * @param src The source of the copy operation.
- * @param src_size The size of @a src.
- *
- * @retval PROCESSOR_MASK_COPY_LOSSLESS It is guaranteed that the copy
- *      operation is lossless.
- * @retval PROCESSOR_MASK_COPY_PARTIAL_LOSS Partial loss happened due
- *      to the sizes of @a src and @a dst.
- * @retval PROCESSOR_MASK_COPY_COMPLETE_LOSS Complete loss happened due
- *      to the sizes of @a src and @a dst.
- * @retval PROCESSOR_MASK_COPY_INVALID_SIZE One of the arguments sizes
- *      is invalid (bigger than the size of a long).
- */
-Processor_mask_Copy_status _Processor_mask_Copy(
-  long       *dst,
-  size_t      dst_size,
-  const long *src,
-  size_t      src_size
-);
-
-/**
- * @brief Copies one mask to another.
- *
- * @param src The source for the copy operation.
- * @param dst_size The size of @a dst.
- * @param[out] dst The destination for the copy operation.
- *
- * @retval PROCESSOR_MASK_COPY_LOSSLESS It is guaranteed that the copy
- *      operation is lossless.
- * @retval PROCESSOR_MASK_COPY_PARTIAL_LOSS Partial loss happened due
- *      to the sizes of @a src and @a dst.
- * @retval PROCESSOR_MASK_COPY_COMPLETE_LOSS Complete loss happened due
- *      to the sizes of @a src and @a dst.
- * @retval PROCESSOR_MASK_COPY_INVALID_SIZE One of the arguments sizes
- *      is invalid (bigger than the size of a long).
- */
-static inline 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 )
-  );
-}
-
-/**
- * @brief Copies one mask to another.
- *
- * @param src The source for the copy operation.
- * @param src_size The size of @a src.
- * @param[out] dst The destination for the copy operation.
- *
- * @retval PROCESSOR_MASK_COPY_LOSSLESS It is guaranteed that the copy
- *      operation is lossless.
- * @retval PROCESSOR_MASK_COPY_PARTIAL_LOSS Partial loss happened due
- *      to the sizes of @a src and @a dst.
- * @retval PROCESSOR_MASK_COPY_COMPLETE_LOSS Complete loss happened due
- *      to the sizes of @a src and @a dst.
- * @retval PROCESSOR_MASK_COPY_INVALID_SIZE One of the arguments sizes
- *      is invalid (bigger than the size of a long).
- */
-static inline 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
diff --git a/cpukit/include/rtems/score/processormaskimpl.h b/cpukit/include/rtems/score/processormaskimpl.h
new file mode 100644
index 0000000000..bc997edfd4
--- /dev/null
+++ b/cpukit/include/rtems/score/processormaskimpl.h
@@ -0,0 +1,437 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ * @file
+ *
+ * @ingroup RTEMSScoreProcessorMask
+ *
+ * @brief This header file provides the interfaces of the
+ *   @ref RTEMSScoreProcessorMask.
+ */
+
+/*
+ * Copyright (C) 2016, 2017 embedded brains GmbH & Co. KG
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _RTEMS_SCORE_PROCESSORMASKIMPL_H
+#define _RTEMS_SCORE_PROCESSORMASKIMPL_H
+
+#include <rtems/score/processormask.h>
+
+#include <sys/cpuset.h>
+
+#include <strings.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/**
+ * @addtogroup RTEMSScoreProcessorMask
+ *
+ * @{
+ */
+
+/**
+ * @brief Sets the bits of the mask to zero, also considers CPU_MAXIMUM_PROCESSORS.
+ *
+ * @param[out] mask The mask to set to zero.
+ */
+static inline void _Processor_mask_Zero( Processor_mask *mask )
+{
+  __BIT_ZERO( CPU_MAXIMUM_PROCESSORS, mask );
+}
+
+/**
+ * @brief Checks if the mask is zero, also considers CPU_MAXIMUM_PROCESSORS.
+ *
+ * @param mask The mask to check whether is is zero
+ *
+ * @retval true The mask is zero.
+ * @retval false The mask is not zero.
+ */
+static inline bool _Processor_mask_Is_zero( const Processor_mask *mask )
+{
+  return __BIT_EMPTY( CPU_MAXIMUM_PROCESSORS, mask );
+}
+
+/**
+ * @brief Fills the mask, also considers CPU_MAXIMUM_PROCESSORS.
+ *
+ * @param[out] mask The mask to fill
+ */
+static inline void _Processor_mask_Fill( Processor_mask *mask )
+{
+  __BIT_FILL( CPU_MAXIMUM_PROCESSORS, mask );
+}
+
+/**
+ * @brief Copies the mask to another mask, also considers CPU_MAXIMUM_PROCESSORS.
+ *
+ * @param[out] dst The mask to copy @a src to.
+ * @param src The mask to copy to @a dst.
+ */
+static inline void _Processor_mask_Assign(
+  Processor_mask *dst, const Processor_mask *src
+)
+{
+  __BIT_COPY( CPU_MAXIMUM_PROCESSORS, src, dst );
+}
+
+/**
+ * @brief Sets the specified index bit of the mask.
+ *
+ * @param[out] mask The mask to set the bit of.
+ * @param index The index of the bit that shall be set.
+ */
+static inline void _Processor_mask_Set(
+  Processor_mask *mask,
+  uint32_t        index
+)
+{
+  __BIT_SET( CPU_MAXIMUM_PROCESSORS, index, mask );
+}
+
+/**
+ * @brief Clears the specified index bit of the mask.
+ *
+ * @param[out] mask The mask to clear the bit of.
+ * @param index The index of the bit that shall be cleared.
+ */
+static inline void _Processor_mask_Clear(
+  Processor_mask *mask,
+  uint32_t        index
+)
+{
+  __BIT_CLR( CPU_MAXIMUM_PROCESSORS, index, mask );
+}
+
+/**
+ * @brief Checks if the specified index bit of the mask is set.
+ *
+ * @param mask The mask to check if the specified bit is set.
+ * @param index The index of the bit that is checked.
+ *
+ * @retval true The specified index bit is set.
+ * @retval false The specified index bit is not set.
+ */
+static inline bool _Processor_mask_Is_set(
+  const Processor_mask *mask,
+  uint32_t              index
+)
+{
+  return __BIT_ISSET( CPU_MAXIMUM_PROCESSORS, index, mask );
+}
+
+/**
+ * @brief Checks if the processor sets a and b are equal.
+ *
+ * @param a The first processor set.
+ * @param b The seconde processor set.
+ *
+ * @retval true The processor sets a and b are equal.
+ * @retval false The processor sets a and b are not equal.
+ */
+static inline bool _Processor_mask_Is_equal(
+  const Processor_mask *a,
+  const Processor_mask *b
+)
+{
+  return !__BIT_CMP( CPU_MAXIMUM_PROCESSORS, a, b );
+}
+
+/**
+ * @brief Checks if the intersection of the processor sets a and b is
+ * non-empty.
+ *
+ * @param a The first processor set.
+ * @param b The second processor set.
+ *
+ * @retval true The intersection of the processor sets a and b is non-empty.
+ * @retval false The intersection of the processor sets a and b is empty.
+ */
+static inline bool _Processor_mask_Has_overlap(
+  const Processor_mask *a,
+  const Processor_mask *b
+)
+{
+  return __BIT_OVERLAP( CPU_MAXIMUM_PROCESSORS, a, b );
+}
+
+/**
+ * @brief Checks if the processor set small is a subset of processor set
+ * big.
+ *
+ * @param big The bigger processor set.
+ * @param small The smaller processor set.
+ *
+ * @retval true @a small is a subset of @a big.
+ * @retval false @a small is not a subset of @a big.
+ */
+static inline 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.
+ *
+ * @param[out] a The processor mask that is set by this operation.
+ * @param b The first parameter of the AND-operation.
+ * @param c The second parameter of the AND-operation.
+ */
+static inline 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.
+ *
+ * @param[out] a The processor mask that is set by this operation.
+ * @param b The first parameter of the OR-operation.
+ * @param c The second parameter of the OR-operation.
+ */
+static inline 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.
+ *
+ * @param[out] a The processor mask that is set by this operation.
+ * @param b The first parameter of the XOR-operation.
+ * @param c The second parameter of the XOR-operation.
+ */
+static inline void _Processor_mask_Xor(
+  Processor_mask       *a,
+  const Processor_mask *b,
+  const Processor_mask *c
+)
+{
+  __BIT_XOR2( CPU_MAXIMUM_PROCESSORS, a, b, c );
+}
+
+/**
+ * @brief Gets the number of set bits in the processor mask.
+ *
+ * @param a The processor mask of which the set bits are counted.
+ *
+ * @return The number of set bits in @a a.
+ */
+static inline uint32_t _Processor_mask_Count( const Processor_mask *a )
+{
+  return (uint32_t) __BIT_COUNT( CPU_MAXIMUM_PROCESSORS, a );
+}
+
+/**
+ * @brief Finds the last set of the processor mask.
+ *
+ * @param a The processor mask wo find the last set of.
+ *
+ * @return The last set of @a a.
+ */
+static inline 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.
+ *
+ * @param mask The processor mask.
+ * @param index The specified index.
+ *
+ * @return The subset containing the specified index as an unsigned 32-bit integer.
+ */
+static inline uint32_t _Processor_mask_To_uint32_t(
+  const Processor_mask *mask,
+  uint32_t              index
+)
+{
+  long bits = mask->__bits[ index / _BITSET_BITS ];
+
+  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.
+ *
+ * @param[out] mask The mask that is created.
+ * @param bits The bits for creating the mask.
+ * @param index The index to which the mask is relative.
+ */
+static inline 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.
+ *
+ * @param[out] The mask that is created.
+ * @param index The specified index.
+ */
+static inline 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;
+
+/**
+ * @brief Checks if the copy status guarantees at most partial loss.
+ *
+ * @param status The copy status to check.
+ *
+ * @retval true At most partial loss can be guaranteed.
+ * @retval false The status indicates more than partial loss.
+ */
+static inline bool _Processor_mask_Is_at_most_partial_loss(
+  Processor_mask_Copy_status status
+)
+{
+  return (unsigned int) status <= PROCESSOR_MASK_COPY_PARTIAL_LOSS;
+}
+
+/**
+ * @brief Copies one mask to another.
+ *
+ * @param[out] dst The destination of the copy operation.
+ * @param dst_size The size of @a dst.
+ * @param src The source of the copy operation.
+ * @param src_size The size of @a src.
+ *
+ * @retval PROCESSOR_MASK_COPY_LOSSLESS It is guaranteed that the copy
+ *      operation is lossless.
+ * @retval PROCESSOR_MASK_COPY_PARTIAL_LOSS Partial loss happened due
+ *      to the sizes of @a src and @a dst.
+ * @retval PROCESSOR_MASK_COPY_COMPLETE_LOSS Complete loss happened due
+ *      to the sizes of @a src and @a dst.
+ * @retval PROCESSOR_MASK_COPY_INVALID_SIZE One of the arguments sizes
+ *      is invalid (bigger than the size of a long).
+ */
+Processor_mask_Copy_status _Processor_mask_Copy(
+  long       *dst,
+  size_t      dst_size,
+  const long *src,
+  size_t      src_size
+);
+
+/**
+ * @brief Copies one mask to another.
+ *
+ * @param src The source for the copy operation.
+ * @param dst_size The size of @a dst.
+ * @param[out] dst The destination for the copy operation.
+ *
+ * @retval PROCESSOR_MASK_COPY_LOSSLESS It is guaranteed that the copy
+ *      operation is lossless.
+ * @retval PROCESSOR_MASK_COPY_PARTIAL_LOSS Partial loss happened due
+ *      to the sizes of @a src and @a dst.
+ * @retval PROCESSOR_MASK_COPY_COMPLETE_LOSS Complete loss happened due
+ *      to the sizes of @a src and @a dst.
+ * @retval PROCESSOR_MASK_COPY_INVALID_SIZE One of the arguments sizes
+ *      is invalid (bigger than the size of a long).
+ */
+static inline 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 )
+  );
+}
+
+/**
+ * @brief Copies one mask to another.
+ *
+ * @param src The source for the copy operation.
+ * @param src_size The size of @a src.
+ * @param[out] dst The destination for the copy operation.
+ *
+ * @retval PROCESSOR_MASK_COPY_LOSSLESS It is guaranteed that the copy
+ *      operation is lossless.
+ * @retval PROCESSOR_MASK_COPY_PARTIAL_LOSS Partial loss happened due
+ *      to the sizes of @a src and @a dst.
+ * @retval PROCESSOR_MASK_COPY_COMPLETE_LOSS Complete loss happened due
+ *      to the sizes of @a src and @a dst.
+ * @retval PROCESSOR_MASK_COPY_INVALID_SIZE One of the arguments sizes
+ *      is invalid (bigger than the size of a long).
+ */
+static inline 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_PROCESSORMASKIMPL_H */
diff --git a/cpukit/include/rtems/score/smpimpl.h b/cpukit/include/rtems/score/smpimpl.h
index 2ffc047070..a8e3a3be15 100644
--- a/cpukit/include/rtems/score/smpimpl.h
+++ b/cpukit/include/rtems/score/smpimpl.h
@@ -40,7 +40,7 @@
 
 #include <rtems/score/smp.h>
 #include <rtems/score/percpu.h>
-#include <rtems/score/processormask.h>
+#include <rtems/score/processormaskimpl.h>
 #include <rtems/fatal.h>
 
 #ifdef __cplusplus