ARC: linker: merge GNU and MWDT linker scripts
As discussed in #22668, there is additional risk ascociated with splitting linker files, as one may update one script and not be aware of the other. Especially related to updating GNU ld, and not mwdt could break code for mwdt unnoticed, as mwdt is not part of CI. Let's create a single entry point for linker template. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
This commit is contained in:
Eugeniy Paltsev
Anas Nashif
parent
243120da0c
commit
8e1f40a632
3 changed files with 225 additions and 469 deletions
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@ -4,9 +4,231 @@
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @brief Common parts of the linker scripts for the ARCv2 targets for
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* GNU and MWDT toolchains.
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*/
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#if defined(__MWDT_LINKER_CMD__)
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#include <arch/arc/v2/linker-mwdt.ld>
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#include <linker/sections.h>
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#include <linker/linker-defs.h>
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#include <linker/linker-tool.h>
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/* physical address of RAM */
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#ifdef CONFIG_HARVARD
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#define ROMABLE_REGION ICCM
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#define RAMABLE_REGION DCCM
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#else
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#include <arch/arc/v2/linker-gnu.ld>
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#if defined(CONFIG_XIP) && (FLASH_SIZE != 0)
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#define ROMABLE_REGION FLASH
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#define RAMABLE_REGION SRAM
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#else
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#define ROMABLE_REGION SRAM
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#define RAMABLE_REGION SRAM
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#endif
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#endif
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#ifdef CONFIG_ARC_MPU_ENABLE
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#if CONFIG_ARC_MPU_VER == 2
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#define MPU_MIN_SIZE 2048
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#elif CONFIG_ARC_MPU_VER == 3
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#define MPU_MIN_SIZE 32
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#endif
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#define MPU_MIN_SIZE_ALIGN . = ALIGN(MPU_MIN_SIZE);
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#if defined(CONFIG_MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT)
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#define MPU_ALIGN(region_size) \
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. = ALIGN(MPU_MIN_SIZE); \
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. = ALIGN( 1 << LOG2CEIL(region_size))
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#else
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#define MPU_ALIGN(region_size) \
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. = ALIGN(MPU_MIN_SIZE)
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#endif
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#else
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#define MPU_MIN_SIZE_ALIGN
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#define MPU_ALIGN(region_size) . = ALIGN(4)
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#endif
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#if defined(CONFIG_XIP)
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#define _DATA_IN_ROM __data_rom_start
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#else
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#define _DATA_IN_ROM
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#endif
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OUTPUT_ARCH(arc)
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ENTRY(CONFIG_KERNEL_ENTRY)
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MEMORY {
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#ifdef FLASH_START
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FLASH (rx) : ORIGIN = FLASH_START, LENGTH = FLASH_SIZE
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#endif
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#ifdef ICCM_START
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ICCM (rwx) : ORIGIN = ICCM_START, LENGTH = ICCM_SIZE
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#endif
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#ifdef SRAM_START
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SRAM (rwx) : ORIGIN = SRAM_START, LENGTH = SRAM_SIZE
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#endif
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#ifdef DCCM_START
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DCCM (rw) : ORIGIN = DCCM_START, LENGTH = DCCM_SIZE
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#endif
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/* Used by and documented in include/linker/intlist.ld */
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IDT_LIST (wx) : ORIGIN = 0xFFFFF7FF, LENGTH = 2K
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}
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SECTIONS {
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#include <linker/rel-sections.ld>
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GROUP_START(ROMABLE_REGION)
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SECTION_PROLOGUE(_TEXT_SECTION_NAME,,ALIGN(1024)) {
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_image_rom_start = .;
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_image_text_start = .;
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/* Located in generated directory. This file is populated by the
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* zephyr_linker_sources() Cmake function.
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*/
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#include <snippets-rom-start.ld>
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*(.text .text.*)
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*(.gnu.linkonce.t.*)
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. = ALIGN(4);
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#include <linker/kobject-text.ld>
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} GROUP_LINK_IN(ROMABLE_REGION)
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_image_text_end = .;
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_image_rodata_start = .;
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#include <linker/common-rom.ld>
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SECTION_PROLOGUE(_RODATA_SECTION_NAME,,) {
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KEEP(*(.openocd_dbg))
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KEEP(*(".openocd_dbg.*"))
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*(".rodata")
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*(".rodata.*")
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*(.gnu.linkonce.r.*)
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/* Located in generated directory. This file is populated by the
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* zephyr_linker_sources() Cmake function.
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*/
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#include <snippets-rodata.ld>
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#include <linker/kobject-rom.ld>
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} GROUP_LINK_IN(ROMABLE_REGION)
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#ifdef __MWDT_LINKER_CMD__
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/* TODO: add mwdt specific ROM C++ sections */
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#else
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#include <linker/cplusplus-rom.ld>
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#endif /* __MWDT_LINKER_CMD__ */
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_image_rodata_end = .;
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MPU_ALIGN(_image_rodata_end - _image_rom_start);
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_image_rom_end = .;
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_image_rom_size = _image_rom_end - _image_rom_start;
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GROUP_END(ROMABLE_REGION)
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GROUP_START(RAMABLE_REGION)
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#include <app_data_alignment.ld>
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/* Located in generated directory. This file is populated by the
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* zephyr_linker_sources() Cmake function.
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*/
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#include <snippets-ram-sections.ld>
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#if defined(CONFIG_USERSPACE)
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#define APP_SHARED_ALIGN MPU_MIN_SIZE_ALIGN
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#define SMEM_PARTITION_ALIGN MPU_ALIGN
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#include <app_smem.ld>
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_image_ram_start = _app_smem_start;
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_app_smem_size = _app_smem_end - _app_smem_start;
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_app_smem_rom_start = LOADADDR(_APP_SMEM_SECTION_NAME);
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#endif /* CONFIG_USERSPACE */
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SECTION_DATA_PROLOGUE(_BSS_SECTION_NAME,(NOLOAD),) {
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MPU_MIN_SIZE_ALIGN
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/*
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* For performance, BSS section is assumed to be 4 byte aligned and
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* a multiple of 4 bytes
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*/
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. = ALIGN(4);
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__bss_start = .;
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_image_ram_start = .;
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__kernel_ram_start = .;
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*(".bss")
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*(".bss.*")
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*(COMMON)
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*(".kernel_bss.*")
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/*
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* BSP clears this memory in words only and doesn't clear any
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* potential left over bytes.
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*/
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__bss_end = ALIGN(4);
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} GROUP_DATA_LINK_IN(RAMABLE_REGION, RAMABLE_REGION)
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#include <linker/common-noinit.ld>
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SECTION_DATA_PROLOGUE(_DATA_SECTION_NAME,,) {
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/* when XIP, .text is in ROM, but vector table must be at start of .data */
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__data_ram_start = .;
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*(".data")
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*(".data.*")
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*(".kernel.*")
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/* Located in generated directory. This file is populated by the
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* zephyr_linker_sources() Cmake function.
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*/
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#include <snippets-rwdata.ld>
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} GROUP_DATA_LINK_IN(RAMABLE_REGION, ROMABLE_REGION)
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__data_rom_start = LOADADDR(_DATA_SECTION_NAME);
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#include <linker/common-ram.ld>
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#include <linker/kobject.ld>
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#ifdef __MWDT_LINKER_CMD__
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/* TODO: add mwdt specific RAM C++ sections */
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#else
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#include <linker/cplusplus-ram.ld>
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#endif /* __MWDT_LINKER_CMD__ */
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__data_ram_end = .;
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MPU_MIN_SIZE_ALIGN
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/* Define linker symbols */
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_image_ram_end = .;
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_end = .; /* end of image */
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__kernel_ram_end = .;
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__kernel_ram_size = __kernel_ram_end - __kernel_ram_start;
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#ifdef __MWDT_LINKER_CMD__
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/* mwdt requires _fstack, _estack which will be used in _stkchk.
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* _stkchk is inserted by mwdt automatically, if _fstack, _estack is not
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* set correctly, the brk_s instruction will be called
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* here, we use a trick to deceive the compiler.
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*/
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_fstack = _image_ram_start;
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_estack = .;
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#endif /* __MWDT_LINKER_CMD__ */
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GROUP_END(RAMABLE_REGION)
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/* Located in generated directory. This file is populated by the
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* zephyr_linker_sources() Cmake function.
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*/
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#include <snippets-sections.ld>
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#include <linker/debug-sections.ld>
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SECTION_PROLOGUE(.ARC.attributes, 0,) {
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KEEP(*(.ARC.attributes))
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KEEP(*(.gnu.attributes))
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}
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/DISCARD/ : { *(.note.GNU-stack) }
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}
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