15e834a687
Fixes: #38591, #38207, #37861
The commit 65a2de84a9 aligned the data
linker symbol for sections and regions.
The data region symbol start has been placed outside the sections thus
being defined as the address of the region before alignment of the first
section in the data region, usually the `datas` section.
The symbol defining the start address of the data section is after
section alignment.
In most cases the address of the data region start and datas section
start will be identical, but not always.
The data region symbol is a new linker symbol and existing code has
been depending on the old data section start symbol.
Thus, the update to the use of the data region start symbol instead of
data ram start symbol thus results in a different address when the
section is aligned to a different address.
To ensure the original behavior in all cases, the data region start
address is now moved inside the data section.
Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
177 lines
3.6 KiB
Text
177 lines
3.6 KiB
Text
/*
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* Copyright (c) 2019-2020 Cobham Gaisler AB
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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 Linker command/script file for SPARC
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*/
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#include <soc.h>
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#include <autoconf.h>
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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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ENTRY(CONFIG_KERNEL_ENTRY)
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SECTIONS
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{
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#include <linker/rel-sections.ld>
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__rom_region_start = .;
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SECTION_PROLOGUE(_TEXT_SECTION_NAME,,)
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{
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/* Trap table alignment required by SPARC V8 specification. */
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. = ALIGN(0x1000);
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__text_region_start = .;
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*(.text.traptable)
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*(.text)
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*(.text.*)
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*(.stub)
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*(.gnu.linkonce.t.*)
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} GROUP_LINK_IN(REGION_TEXT)
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__text_region_end = .;
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__rodata_region_start = .;
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#include <linker/common-rom.ld>
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#include <linker/thread-local-storage.ld>
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SECTION_PROLOGUE(_RODATA_SECTION_NAME,,)
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{
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. = ALIGN(8);
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*(.rodata)
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*(.rodata.*)
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*(.gnu.linkonce.r.*)
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*(.rodata1)
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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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} GROUP_LINK_IN(REGION_RODATA)
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#include <linker/cplusplus-rom.ld>
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__rodata_region_end = .;
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__rodata_region_size = __rodata_region_end - __rodata_region_start;
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__rom_region_end = .;
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__data_region_load_start = .;
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SECTION_PROLOGUE(.plt,,)
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{
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*(.plt)
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}
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SECTION_PROLOGUE(.iplt,,)
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{
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*(.iplt)
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}
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SECTION_DATA_PROLOGUE(_DATA_SECTION_NAME,,)
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{
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. = ALIGN(8);
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_image_ram_start = .;
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__data_region_start = .;
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__data_start = .;
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*(.data)
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*(.data.*)
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*(.gnu.linkonce.d.*)
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SORT(CONSTRUCTORS)
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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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__data_end = .;
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} GROUP_DATA_LINK_IN(REGION_DATA_VMA, REGION_DATA_LMA)
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__data_size = __data_end - __data_start;
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__data_load_start = LOADADDR(_DATA_SECTION_NAME);
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#include <linker/common-ram.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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/* 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-data-sections.ld>
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__data_region_end = .;
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SECTION_DATA_PROLOGUE(_BSS_SECTION_NAME,(NOLOAD),)
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{
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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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*(.dynbss)
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*(.bss)
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*(.bss.*)
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*(.gnu.linkonce.b.*)
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COMMON_SYMBOLS
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/*
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* As memory is cleared in words only, it is simpler to ensure the BSS
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* section ends on a 4 byte boundary. This wastes a maximum of 3 bytes.
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*/
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__bss_end = ALIGN(4);
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} GROUP_LINK_IN(REGION_BSS)
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SECTION_PROLOGUE(_NOINIT_SECTION_NAME,(NOLOAD),)
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{
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/*
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* This section is used for non-initialized objects that
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* will not be cleared during the boot process.
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*/
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*(.noinit)
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*(.noinit.*)
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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-noinit.ld>
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} GROUP_LINK_IN(REGION_BSS)
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#include <linker/cplusplus-ram.ld>
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_image_ram_end = .;
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_end = .; /* end of image */
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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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/DISCARD/ : { *(.note.GNU-stack) }
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/DISCARD/ : { *(.gnu_debuglink) }
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/DISCARD/ : { *(.gnu.lto_*) }
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SECTION_PROLOGUE(.gnu.attributes, 0,)
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{
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KEEP(*(.gnu.attributes))
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}
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}
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