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synced 2025-04-23 21:57:33 -04:00
[sw] clean-up linker script
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stnolting
parent
9d3a0fddac
commit
7864fa2bbc
1 changed files with 33 additions and 17 deletions
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@ -3,7 +3,7 @@
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/* # ********************************************************************************************* # */
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/* # BSD 3-Clause License # */
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/* # # */
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/* # Copyright (c) 2022, Stephan Nolting. All rights reserved. # */
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/* # Copyright (c) 2023, Stephan Nolting. All rights reserved. # */
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/* # # */
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/* # Redistribution and use in source and binary forms, with or without modification, are # */
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/* # permitted provided that the following conditions are met: # */
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@ -32,12 +32,10 @@
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/* # The NEORV32 Processor - https://github.com/stnolting/neorv32 (c) Stephan Nolting # */
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/* ################################################################################################# */
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/* Default linker script, for normal executables .
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* Copyright (C) 2014-2020 Free Software Foundation, Inc.
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/* Copyright (C) 2014-2020 Free Software Foundation, Inc.
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* Copying and distribution of this script, with or without modification,
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* are permitted in any medium without royalty provided the copyright
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* notice and this notice are preserved.
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* Modified for the NEORV32 processor by Stephan Nolting. */
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* notice and this notice are preserved. */
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OUTPUT_FORMAT("elf32-littleriscv")
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@ -50,7 +48,7 @@ SEARCH_DIR("=/usr/lib")
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/* ************************************************************************************************* */
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/* +++ NEORV32 memory configuration +++ */
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/* +++ NEORV32 memory layout configuration +++ */
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/* If the symbols are not explicitly defined the default configurations are used. If required, only */
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/* edit the very last entry in each row. */
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/* NOTE: section sizes have to be a multiple of 4 bytes; base addresses have to be 32-bit-aligned. */
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@ -69,8 +67,8 @@ __neorv32_ram_base = DEFINED(__neorv32_ram_base) ? __neorv32_ram_base : 0x800000
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/* ************************************************************************************************* */
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/* If compiling the bootloader, the ROM section is automatically re-mapped to the processor-internal */
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/* bootloader ROM address space. */
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/* when compiling the bootloader the ROM section is automatically re-mapped to the */
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/* processor-internal bootloader ROM address space. */
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/* ************************************************************************************************* */
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MEMORY
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{
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@ -79,11 +77,12 @@ MEMORY
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}
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/* ************************************************************************************************* */
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/* Section ".text" - program code */
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/* This is the first part of the actual/final executable */
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/* ************************************************************************************************* */
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SECTIONS
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{
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/* First part of the actual executable file: actual instructions */
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.text : ALIGN(4)
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{
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PROVIDE(__text_start = .);
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@ -130,7 +129,10 @@ SECTIONS
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} > rom
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/* Second part of the actual executable: read-only data, PLACED RIGHT NEXT to .text using "__etext" symbol */
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/* ************************************************************************************************* */
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/* Section ".rodata" - read-only constants and ".data" initialization */
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/* This is the second part of the actual/final executable the will be places right after ".text" */
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/* ************************************************************************************************* */
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.rodata __etext :
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{
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/* constant data like strings */
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@ -143,7 +145,10 @@ SECTIONS
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} > rom
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/* initialized read/write data, accessed in RAM, placed in ROM, copied during boot - not part of the final executable */
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/* ************************************************************************************************* */
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/* Section ".data" - pre-initialized variables */
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/* The start-up code will initialize this RAM section from the executable's ".rodata" section */
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/* ************************************************************************************************* */
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.data : ALIGN(4)
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{
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__DATA_BEGIN__ = .;
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@ -175,7 +180,10 @@ SECTIONS
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} > ram AT > rom
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/* zero/non-initialized read/write data placed in RAM - not part of the final executable */
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/* ************************************************************************************************* */
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/* Section ".bss" - non-initialized variables */
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/* The start-up code will clear this section during boot-up */
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/* ************************************************************************************************* */
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.bss (NOLOAD): ALIGN(4)
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{
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__BSS_START__ = .;
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@ -206,7 +214,9 @@ SECTIONS
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} > ram
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/* heap for dynamic memory allocation (use carefully!) - not part of the final executable */
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/* ************************************************************************************************* */
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/* Section ".heap" - dynamic memory (e.g. malloc) */
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/* ************************************************************************************************* */
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.heap : ALIGN(4)
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{
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PROVIDE(__heap_start = .);
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@ -217,7 +227,9 @@ SECTIONS
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} > ram
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/* Yet unused */
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/* ************************************************************************************************* */
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/* Unused sections */
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/* ************************************************************************************************* */
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.jcr : { KEEP (*(.jcr)) }
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.got : { *(.got.plt) *(.igot.plt) *(.got) *(.igot) } .interp : { *(.interp) }
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.note.gnu.build-id : { *(.note.gnu.build-id) }
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@ -246,7 +258,9 @@ SECTIONS
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.rela.bss : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
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/* Stabs debugging sections. */
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/* ************************************************************************************************* */
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/* Debug symbols */
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/* ************************************************************************************************* */
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.stab 0 : { *(.stab) }
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.stabstr 0 : { *(.stabstr) }
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.stab.excl 0 : { *(.stab.excl) }
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@ -290,7 +304,9 @@ SECTIONS
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/DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.gnu.lto_*) }
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/* Export symbols for neorv32 crt0 start-up code */
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/* ************************************************************************************************* */
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/* Export symbols for neorv32 crt0 start-up code */
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/* ************************************************************************************************* */
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PROVIDE(__crt0_max_heap = __neorv32_heap_size);
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PROVIDE(__crt0_imem_begin = ORIGIN(rom));
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PROVIDE(__crt0_dmem_begin = ORIGIN(ram));
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