210 lines
6.1 KiB
C
210 lines
6.1 KiB
C
/*
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* Copyright (c) 2013-2014, Wind River Systems, Inc.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief GCC toolchain linker defs
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*
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* This header file defines the necessary macros used by the linker script for
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* use with the GCC linker.
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*/
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#ifndef ZEPHYR_INCLUDE_LINKER_LINKER_TOOL_GCC_H_
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#define ZEPHYR_INCLUDE_LINKER_LINKER_TOOL_GCC_H_
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#include <sys/mem_manage.h>
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#if defined(CONFIG_ARM)
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#if defined(CONFIG_BIG_ENDIAN)
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#define OUTPUT_FORMAT_ "elf32-bigarm"
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#else
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#define OUTPUT_FORMAT_ "elf32-littlearm"
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#endif
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OUTPUT_FORMAT(OUTPUT_FORMAT_)
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#elif defined(CONFIG_ARM64)
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OUTPUT_FORMAT("elf64-littleaarch64")
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#elif defined(CONFIG_ARC)
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#if defined(CONFIG_64BIT)
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OUTPUT_FORMAT("elf64-littlearc")
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#else
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OUTPUT_FORMAT("elf32-littlearc", "elf32-bigarc", "elf32-littlearc")
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#endif
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#elif defined(CONFIG_X86)
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#if defined(CONFIG_X86_64)
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OUTPUT_FORMAT("elf64-x86-64")
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OUTPUT_ARCH("i386:x86-64")
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#else
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OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
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OUTPUT_ARCH("i386")
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#endif
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#elif defined(CONFIG_NIOS2)
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OUTPUT_FORMAT("elf32-littlenios2", "elf32-bignios2", "elf32-littlenios2")
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#elif defined(CONFIG_RISCV)
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OUTPUT_ARCH("riscv")
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#ifdef CONFIG_64BIT
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OUTPUT_FORMAT("elf64-littleriscv")
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#else
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OUTPUT_FORMAT("elf32-littleriscv")
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#endif
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#elif defined(CONFIG_XTENSA)
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/* Not needed */
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#elif defined(CONFIG_MIPS)
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OUTPUT_ARCH("mips")
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#elif defined(CONFIG_ARCH_POSIX)
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/* Not needed */
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#elif defined(CONFIG_SPARC)
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OUTPUT_FORMAT("elf32-sparc")
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#else
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#error Arch not supported.
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#endif
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/*
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* The GROUP_START() and GROUP_END() macros are used to define a group
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* of sections located in one memory area, such as RAM, ROM, etc.
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* The <where> parameter is the name of the memory area.
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*/
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#define GROUP_START(where)
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#define GROUP_END(where)
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/**
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* @def GROUP_LINK_IN
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*
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* Route memory to a specified memory area
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*
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* The GROUP_LINK_IN() macro is located at the end of the section
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* description and tells the linker that this section is located in
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* the memory area specified by 'where' argument.
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*
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* This macro is intentionally undefined for CONFIG_MMU systems when
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* CONFIG_KERNEL_VM_BASE is not the same as CONFIG_SRAM_BASE_ADDRESS,
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* as both the LMA and VMA destinations must be known for all sections
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* as this corresponds to physical vs. virtual location.
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*
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* @param where Destination memory area
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*/
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#if defined(CONFIG_ARCH_POSIX)
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#define GROUP_LINK_IN(where)
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#elif !defined(Z_VM_KERNEL)
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#define GROUP_LINK_IN(where) > where
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#endif
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/**
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* @def GROUP_ROM_LINK_IN
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*
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* Route memory for a read-only section
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*
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* The GROUP_ROM_LINK_IN() macro is located at the end of the section
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* description and tells the linker that this a read-only section
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* that is physically placed at the 'lregion` argument.
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*
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* If CONFIG_XIP is active, the 'lregion' area is flash memory.
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*
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* If CONFIG_MMU is active, the vregion argument will be used to
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* determine where this is located in the virtual memory map, otherwise
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* it is ignored.
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*
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* @param vregion Output VMA (only used if CONFIG_MMU where LMA != VMA)
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* @param lregion Output LMA
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*/
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#if defined(CONFIG_ARCH_POSIX)
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#define GROUP_ROM_LINK_IN(vregion, lregion)
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#elif defined(Z_VM_KERNEL)
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#define GROUP_ROM_LINK_IN(vregion, lregion) > vregion AT > lregion
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#else
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#define GROUP_ROM_LINK_IN(vregion, lregion) > lregion
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#endif
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/**
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* @def GROUP_DATA_LINK_IN
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*
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* Route memory for read-write sections that are loaded.
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*
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* Used for initialized data sections that on XIP platforms must be copied at
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* startup.
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*
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* @param vregion Output VMA
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* @param lregion Output LMA (only used if CONFIG_MMU if VMA != LMA,
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* or CONFIG_XIP)
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*/
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#if defined(CONFIG_ARCH_POSIX)
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#define GROUP_DATA_LINK_IN(vregion, lregion)
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#elif defined(CONFIG_XIP) || defined(Z_VM_KERNEL)
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#define GROUP_DATA_LINK_IN(vregion, lregion) > vregion AT > lregion
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#else
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#define GROUP_DATA_LINK_IN(vregion, lregion) > vregion
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#endif
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/**
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* @def GROUP_NOLOAD_LINK_IN
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*
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* Route memory for read-write sections that are NOT loaded; typically this
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* is only used for 'BSS' and 'noinit'.
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*
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* @param vregion Output VMA
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* @param lregion Output LMA (only used if CONFIG_MMU if VMA != LMA,
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* corresponds to physical location)
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*/
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#if defined(CONFIG_ARCH_POSIX)
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#define GROUP_NOLOAD_LINK_IN(vregion, lregion)
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#elif defined(Z_VM_KERNEL)
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#define GROUP_NOLOAD_LINK_IN(vregion, lregion) > vregion AT > lregion
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#elif defined(CONFIG_XIP)
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#define GROUP_NOLOAD_LINK_IN(vregion, lregion) > vregion AT > vregion
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#else
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#define GROUP_NOLOAD_LINK_IN(vregion, lregion) > vregion
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#endif
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/**
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* @def SECTION_PROLOGUE
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*
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* The SECTION_PROLOGUE() macro is used to define the beginning of a section.
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*
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* On MMU systems where VMA != LMA there is an implicit ALIGN_WITH_INPUT
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* specified.
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*
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* @param name Name of the output sectio
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* @param options Section options, such as (NOLOAD), or left blank
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* @param align Alignment directives, such as SUBALIGN(). ALIGN() itself is
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* not allowed. May be blank.
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*/
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#ifdef Z_VM_KERNEL
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/* If we have a virtual memory map we need ALIGN_WITH_INPUT in all sections */
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#define SECTION_PROLOGUE(name, options, align) \
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name options : ALIGN_WITH_INPUT align
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#else
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#define SECTION_PROLOGUE(name, options, align) \
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name options : align
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#endif
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/**
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* @def SECTION_DATA_PROLOGUE
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*
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* Same as for SECTION_PROLOGUE(), except that this one must be used
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* for data sections which on XIP platforms will have differing
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* virtual and load addresses (i.e. they'll be copied into RAM at
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* program startup). Such a section must also use
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* GROUP_DATA_LINK_IN to specify the correct output load address.
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*
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* This is equivalent to SECTION_PROLOGUE() on non-XIP systems.
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* On XIP systems there is an implicit ALIGN_WITH_INPUT specified.
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*
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* @param name Name of the output sectio
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* @param options Section options, or left blank
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* @param align Alignment directives, such as SUBALIGN(). ALIGN() itself is
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* not allowed. May be blank.
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*/
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#if defined(CONFIG_XIP)
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#define SECTION_DATA_PROLOGUE(name, options, align) \
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name options : ALIGN_WITH_INPUT align
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#else
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#define SECTION_DATA_PROLOGUE(name, options, align) \
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SECTION_PROLOGUE(name, options, align)
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#endif
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#define COMMON_SYMBOLS *(COMMON)
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#endif /* ZEPHYR_INCLUDE_LINKER_LINKER_TOOL_GCC_H_ */
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