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242 lines
7.9 KiB
Plaintext
242 lines
7.9 KiB
Plaintext
4 years ago
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/*--------------------------------------------------------------------------
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* MPLAB XC32 Compiler - ATSAMD21J15B linker script
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*
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* Copyright (c) 2020, Microchip Technology Inc. and its subsidiaries ("Microchip")
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* All rights reserved.
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*
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* This software is developed by Microchip Technology Inc. and its
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* subsidiaries ("Microchip").
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* 3. Microchip's name may not be used to endorse or promote products
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* derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY MICROCHIP "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL MICROCHIP BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING BUT NOT LIMITED TO
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWSOEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
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OUTPUT_ARCH(arm)
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SEARCH_DIR(.)
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/*
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* Define the __XC32_RESET_HANDLER_NAME macro on the command line when you
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* want to use a different name for the Reset Handler function.
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*/
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#ifndef __XC32_RESET_HANDLER_NAME
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#define __XC32_RESET_HANDLER_NAME Reset_Handler
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#endif /* __XC32_RESET_HANDLER_NAME */
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/* Set the entry point in the ELF file. Once the entry point is in the ELF
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* file, you can then use the --write-sla option to xc32-bin2hex to place
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* the address into the hex file using the SLA field (RECTYPE 5). This hex
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* record may be useful for a bootloader that needs to determine the entry
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* point to the application.
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*/
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ENTRY(__XC32_RESET_HANDLER_NAME)
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/*************************************************************************
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* Memory-Region Macro Definitions
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* The XC32 linker preprocesses linker scripts. You may define these
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* macros in the MPLAB X project properties or on the command line when
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* calling the linker via the xc32-gcc shell.
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*************************************************************************/
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#ifndef ROM_ORIGIN
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# define ROM_ORIGIN 0x0
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#endif
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#ifndef ROM_LENGTH
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# define ROM_LENGTH 0x8000
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#elif (ROM_LENGTH > 0x8000)
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# error ROM_LENGTH is greater than the max size of 0x8000
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#endif
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#ifndef RAM_ORIGIN
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# define RAM_ORIGIN 0x20000000
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#endif
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#ifndef RAM_LENGTH
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# define RAM_LENGTH 0x1000
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#elif (RAM_LENGTH > 0x1000)
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# error RAM_LENGTH is greater than the max size of 0x1000
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#endif
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/*************************************************************************
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* Memory-Region Definitions
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* The MEMORY command describes the location and size of blocks of memory
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* on the target device. The command below uses the macros defined above.
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*************************************************************************/
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MEMORY
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{
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rom (LRX) : ORIGIN = ROM_ORIGIN, LENGTH = ROM_LENGTH
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ram (WX!R) : ORIGIN = RAM_ORIGIN, LENGTH = RAM_LENGTH
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config_00804000 : ORIGIN = 0x00804000, LENGTH = 0x4
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config_00804004 : ORIGIN = 0x00804004, LENGTH = 0x4
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}
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/*************************************************************************
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* Output region definitions.
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* CODE_REGION defines the output region for .text/.rodata.
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* DATA_REGION defines the output region for .data/.bss
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* VECTOR_REGION defines the output region for .vectors.
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*
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* CODE_REGION defaults to 'rom', if rom is present (non-zero length),
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* and 'ram' otherwise.
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* DATA_REGION defaults to 'ram', which must be present.
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* VECTOR_REGION defaults to CODE_REGION, unless 'boot_rom' is present.
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*/
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#ifndef CODE_REGION
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# if ROM_LENGTH > 0
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# define CODE_REGION rom
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# else
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# define CODE_REGION ram
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# endif
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#endif
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#ifndef DATA_REGION
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# define DATA_REGION ram
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#endif
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#ifndef VECTOR_REGION
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# define VECTOR_REGION CODE_REGION
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#endif
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__rom_end = ORIGIN(rom) + LENGTH(rom);
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__ram_end = ORIGIN(ram) + LENGTH(ram);
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/*************************************************************************
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* Section Definitions - Map input sections to output sections
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*************************************************************************/
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SECTIONS
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{
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.config_00804000 : {
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KEEP(*(.config_00804000))
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} > config_00804000
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.config_00804004 : {
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KEEP(*(.config_00804004))
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} > config_00804004
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/*
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* The linker moves the .vectors section into itcm when itcm is
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* enabled via the -mitcm option, but only when this .vectors output
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* section exists in the linker script.
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*/
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.vectors :
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{
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. = ALIGN(4);
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_sfixed = .;
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KEEP(*(.vectors .vectors.* .vectors_default .vectors_default.*))
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KEEP(*(.isr_vector))
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KEEP(*(.reset*))
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KEEP(*(.after_vectors))
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} > VECTOR_REGION
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/*
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* Code Sections - Note that standard input sections such as
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* *(.text), *(.text.*), *(.rodata), & *(.rodata.*)
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* are not mapped here. The best-fit allocator locates them,
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* so that input sections may flow around absolute sections
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* as needed.
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*/
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.text :
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{
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. = ALIGN(4);
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*(.glue_7t) *(.glue_7)
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*(.gnu.linkonce.r.*)
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*(.ARM.extab* .gnu.linkonce.armextab.*)
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/* Support C constructors, and C destructors in both user code
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and the C library. This also provides support for C++ code. */
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. = ALIGN(4);
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KEEP(*(.init))
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. = ALIGN(4);
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__preinit_array_start = .;
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KEEP (*(.preinit_array))
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__preinit_array_end = .;
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. = ALIGN(4);
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__init_array_start = .;
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KEEP (*(SORT(.init_array.*)))
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KEEP (*(.init_array))
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__init_array_end = .;
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. = ALIGN(0x4);
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KEEP (*crtbegin.o(.ctors))
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KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
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KEEP (*(SORT(.ctors.*)))
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KEEP (*crtend.o(.ctors))
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. = ALIGN(4);
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KEEP(*(.fini))
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. = ALIGN(4);
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__fini_array_start = .;
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KEEP (*(.fini_array))
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KEEP (*(SORT(.fini_array.*)))
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__fini_array_end = .;
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KEEP (*crtbegin.o(.dtors))
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KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
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KEEP (*(SORT(.dtors.*)))
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KEEP (*crtend.o(.dtors))
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. = ALIGN(4);
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_efixed = .; /* End of text section */
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} > CODE_REGION
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/* .ARM.exidx is sorted, so has to go in its own output section. */
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PROVIDE_HIDDEN (__exidx_start = .);
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.ARM.exidx :
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{
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*(.ARM.exidx* .gnu.linkonce.armexidx.*)
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} > CODE_REGION
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PROVIDE_HIDDEN (__exidx_end = .);
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. = ALIGN(4);
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_etext = .;
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/*
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* Align here to ensure that the .bss section occupies space up to
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* _end. Align after .bss to ensure correct alignment even if the
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* .bss section disappears because there are no input sections.
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*
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* Note that input sections named .bss* are no longer mapped here.
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* The best-fit allocator locates them, so that they may flow
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* around absolute sections as needed.
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*/
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.bss (NOLOAD) :
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{
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. = ALIGN(4);
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__bss_start__ = .;
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_sbss = . ;
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_szero = .;
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*(COMMON)
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. = ALIGN(4);
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__bss_end__ = .;
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_ebss = . ;
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_ezero = .;
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} > DATA_REGION
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. = ALIGN(4);
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_end = . ;
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_ram_end_ = ORIGIN(ram) + LENGTH(ram) -1 ;
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}
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