feat(ble_mesh): Bluetooth Mesh folder and file misc updates

components/bt/esp_ble_mesh/common/include/mesh/compiler.h

@@ -0,0 +1,80 @@
+/*
+ * SPDX-FileCopyrightText: 2010-2014,2017 Wind River Systems, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef _BLE_MESH_COMPILER_H_
+#define _BLE_MESH_COMPILER_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define ___in_section(a, b, c)
+
+#define __in_section(a, b, c) ___in_section(a, b, c)
+
+#define __in_section_unique(seg) ___in_section(seg, __FILE__, __COUNTER__)
+
+#ifndef __packed
+#define __packed        __attribute__((__packed__))
+#endif
+
+#ifndef __aligned
+#define __aligned(x)    __attribute__((__aligned__(x)))
+#endif
+
+#ifndef __used
+#define __used          __attribute__((__used__))
+#endif
+
+#ifndef ARG_UNUSED
+#define ARG_UNUSED(x)   (void)(x)
+#endif
+
+#ifndef popcount
+#define popcount(x)     __builtin_popcount(x)
+#endif
+
+#ifndef ALWAYS_INLINE
+#define ALWAYS_INLINE inline __attribute__((always_inline))
+#endif
+
+
+/*
+ * This is meant to be used in conjunction with __in_section() and similar
+ * where scattered structure instances are concatened together by the linker
+ * and walked by the code at run time just like a contiguous array of such
+ * structures.
+ *
+ * Assemblers and linkers may insert alignment padding by default whose
+ * size is larger than the natural alignment for those structures when
+ * gathering various section segments together, messing up the array walk.
+ * To prevent this, we need to provide an explicit alignment not to rely
+ * on the default that might just work by luck.
+ *
+ * Alignment statements in  linker scripts are not sufficient as
+ * the assembler may add padding by itself to each segment when switching
+ * between sections within the same file even if it merges many such segments
+ * into a single section in the end.
+ */
+#ifndef Z_DECL_ALIGN
+#define Z_DECL_ALIGN(type) __aligned(__alignof(type)) type
+#endif
+
+/*
+ * Convenience helper combining __in_section() and Z_DECL_ALIGN().
+ * The section name is the struct type prepended with an underscore.
+ * The subsection is "static" and the subsubsection is the variable name.
+ */
+#ifndef Z_STRUCT_SECTION_ITERABLE
+#define Z_STRUCT_SECTION_ITERABLE(struct_type, name) \
+        Z_DECL_ALIGN(struct struct_type) name
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _BLE_MESH_COMPILER_H_ */