Implemented project structure

xpack-riscv-none-elf-gcc-13.4.0-1/lib/gcc/riscv-none-elf/13.4.0/plugin/include/memmodel.h

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+/* Prototypes of memory model helper functions.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_MEMMODEL_H
+#define GCC_MEMMODEL_H
+
+/* Suppose that higher bits are target dependent. */
+#define MEMMODEL_MASK ((1<<16)-1)
+
+/* Legacy sync operations set this upper flag in the memory model.  This allows
+   targets that need to do something stronger for sync operations to
+   differentiate with their target patterns and issue a more appropriate insn
+   sequence.  See bugzilla 65697 for background.  */
+#define MEMMODEL_SYNC (1<<15)
+
+/* Memory model without SYNC bit for targets/operations that do not care.  */
+#define MEMMODEL_BASE_MASK (MEMMODEL_SYNC-1)
+
+/* Memory model types for the __atomic* builtins.
+   This must match the order in libstdc++-v3/include/bits/atomic_base.h.  */
+enum memmodel
+{
+  MEMMODEL_RELAXED = 0,
+  MEMMODEL_CONSUME = 1,
+  MEMMODEL_ACQUIRE = 2,
+  MEMMODEL_RELEASE = 3,
+  MEMMODEL_ACQ_REL = 4,
+  MEMMODEL_SEQ_CST = 5,
+  MEMMODEL_LAST = 6,
+  MEMMODEL_SYNC_ACQUIRE = MEMMODEL_ACQUIRE | MEMMODEL_SYNC,
+  MEMMODEL_SYNC_RELEASE = MEMMODEL_RELEASE | MEMMODEL_SYNC,
+  MEMMODEL_SYNC_SEQ_CST = MEMMODEL_SEQ_CST | MEMMODEL_SYNC,
+  /* Say that all the higher bits are valid target extensions.  */
+  MEMMODEL_MAX = INTTYPE_MAXIMUM (int)
+};
+
+/* Return the memory model from a host integer.  */
+inline enum memmodel
+memmodel_from_int (unsigned HOST_WIDE_INT val)
+{
+  return (enum memmodel) (val & MEMMODEL_MASK);
+}
+
+/* Return the base memory model from a host integer.  */
+inline enum memmodel
+memmodel_base (unsigned HOST_WIDE_INT val)
+{
+  return (enum memmodel) (val & MEMMODEL_BASE_MASK);
+}
+
+/* Return TRUE if the memory model is RELAXED.  */
+inline bool
+is_mm_relaxed (enum memmodel model)
+{
+  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_RELAXED;
+}
+
+/* Return TRUE if the memory model is CONSUME.  */
+inline bool
+is_mm_consume (enum memmodel model)
+{
+  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_CONSUME;
+}
+
+/* Return TRUE if the memory model is ACQUIRE.  */
+inline bool
+is_mm_acquire (enum memmodel model)
+{
+  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_ACQUIRE;
+}
+
+/* Return TRUE if the memory model is RELEASE.  */
+inline bool
+is_mm_release (enum memmodel model)
+{
+  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_RELEASE;
+}
+
+/* Return TRUE if the memory model is ACQ_REL.  */
+inline bool
+is_mm_acq_rel (enum memmodel model)
+{
+  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_ACQ_REL;
+}
+
+/* Return TRUE if the memory model is SEQ_CST.  */
+inline bool
+is_mm_seq_cst (enum memmodel model)
+{
+  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_SEQ_CST;
+}
+
+/* Return TRUE if the memory model is a SYNC variant.  */
+inline bool
+is_mm_sync (enum memmodel model)
+{
+  return (model & MEMMODEL_SYNC);
+}
+
+#endif  /* GCC_MEMMODEL_H  */