include/linker-tool-gcc.h

/* linker-tool-gcc.h - GCC toolchain linker defs */

/*
 * Copyright (c) 2013-2014, Wind River Systems, Inc.
 *
 * 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.
 *
 * 3) Neither the name of Wind River Systems nor the names of its contributors
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * 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 HOLDER 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.
 */

/*
DESCRIPTION
This header file defines the necessary macros used by the linker script for
use with the GCC linker.
*/

#ifndef __LINKER_TOOL_GCC_H
#define __LINKER_TOOL_GCC_H

#if defined(CONFIG_CPU_CORTEXM)
OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
ENTRY(KENTRY)
#elif defined(CONFIG_ARC)
OUTPUT_FORMAT("elf32-littlearc", "elf32-bigarc", "elf32-littlearc")
ENTRY(KENTRY)
#else
OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
OUTPUT_ARCH(i386)
ENTRY(KENTRY)
#endif

/*
 * 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_FOLLOWS_AT() macro is located at the end of the section
 * and indicates that the section does not specify an address at which
 * it is to be loaded, but that it follows a section which did specify
 * such an address
 */
#define GROUP_FOLLOWS_AT(where) AT > where

/*
 * 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

/*
 * The SECTION_AT_PROLOGUE() macro is similar to SECTION_PROLOGUE() except
 * that, in addition, the address at which the section is to be loaded is
 * specified.
 */

#define SECTION_AT_PROLOGUE(name, options, align, addr) \
	name options : align AT(addr)

/* Diab-isms */
#define SORT_BY_NAME(x) SORT(x)
#define OPTIONAL

/* see linker-tool-diab.h for description */
#define PGALIGN_ALIGN(x) ALIGN(x)

#define COMMON_SYMBOLS *(COMMON)

#endif /* !__LINKER_TOOL_GCC_H */