include/linker/linker-tool-mwdt.h

/*
 * Copyright (c) 2020, Synopsys, Inc.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/**
 * @file
 * @brief Metware toolchain linker defs
 *
 * This header file defines the necessary macros used by the linker script for
 * use with the metware linker.
 */

#ifndef ZEPHYR_INCLUDE_LINKER_LINKER_TOOL_MWDT_H_
#define ZEPHYR_INCLUDE_LINKER_LINKER_TOOL_MWDT_H_

/*
 * mwdt linker doesn't have the following directives
 */
#define ASSERT(x, y)
#define SUBALIGN(x) ALIGN(x)

/*
 * The GROUP_START() and GROUP_END() macros are used to define a group
 * of sections located in one memory area, such as RAM, ROM, etc.
 * The <where> parameter is the name of the memory area.
 */
#define GROUP_START(where)
#define GROUP_END(where)

/*
 * The GROUP_LINK_IN() macro is located at the end of the section
 * description and tells the linker that this section is located in
 * the memory area specified by <where> argument.
 */
#define GROUP_LINK_IN(where) > where

/**
 * The GROUP_ROM_LINK_IN() macro is located at the end of the section
 * description and tells the linker that this a read-only section
 * that is physically placed at the 'lregion` argument.
 *
 */
#define GROUP_ROM_LINK_IN(vregion, lregion) > lregion

/*
 * As GROUP_LINK_IN(), but takes a second argument indicating the
 * memory region (e.g. "ROM") for the load address.  Used for
 * initialized data sections that on XIP platforms must be copied at
 * startup.
 *
 * And, because output directives in GNU ld are "sticky", this must
 * also be used on the first section *after* such an initialized data
 * section, specifying the same memory region (e.g. "RAM") for both
 * vregion and lregion.
 */
#ifdef CONFIG_XIP
#define GROUP_DATA_LINK_IN(vregion, lregion) > vregion AT > lregion
#else
#define GROUP_DATA_LINK_IN(vregion, lregion) > vregion
#endif

/**
 * Route memory for read-write sections that are NOT loaded; typically this
 * is only used for 'BSS' and 'noinit'.
 */
#ifdef CONFIG_XIP
#define GROUP_NOLOAD_LINK_IN(vregion, lregion) > vregion AT > vregion
#else
#define GROUP_NOLOAD_LINK_IN(vregion, lregion) > vregion
#endif

/*
 * The SECTION_PROLOGUE() macro is used to define the beginning of a section.
 * The <name> parameter is the name of the section, and the <option> parameter
 * is to include any special options such as (NOLOAD). Page alignment has its
 * own parameter since it needs abstraction across the different toolchains.
 * If not required, the <options> and <align> parameters should be left blank.
 */

#define SECTION_PROLOGUE(name, options, align) name options align :

/*
 * As for SECTION_PROLOGUE(), except that this one must (!) be used
 * for data sections which on XIP platforms will have differing
 * virtual and load addresses (i.e. they'll be copied into RAM at
 * program startup).  Such a section must (!) also use
 * GROUP_LINK_IN_LMA to specify the correct output load address.
 */
#ifdef CONFIG_XIP
#define SECTION_DATA_PROLOGUE(name, options, align) \
	name options ALIGN_WITH_INPUT align :
#else
#define SECTION_DATA_PROLOGUE(name, options, align) name options align :
#endif

#define SORT_BY_NAME(x) SORT(x)

#endif /* ZEPHYR_INCLUDE_LINKER_LINKER_TOOL_MWDT_H_ */