mirror of
https://github.com/devkitPro/buildscripts.git
synced 2026-04-25 15:41:31 -05:00
315 lines
8.9 KiB
Plaintext
315 lines
8.9 KiB
Plaintext
/* Linker Script Original v1.3 by Jeff Frohwein */
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/* v1.0 - Original release */
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/* v1.1 - Added proper .data section support */
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/* v1.2 - Added support for c++ & iwram overlays */
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/* - Major contributions by Jason Wilkins. */
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/* v1.3 - .ewram section now can be used when */
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/* compiling for MULTIBOOT mode. This fixes */
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/* malloc() in DevKitAdvance which depends */
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/* on __eheap_start instead of end to define*/
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/* the starting location of heap space. */
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/* External global variable __gba_iwram_heap*/
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/* support added to allow labels end, _end, */
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/* & __end__ to point to end of iwram or */
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/* the end of ewram. */
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/* Additions by WinterMute */
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/* v1.4 - .sbss section added for unitialised */
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/* data in ewram */
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/* v1.5 - padding section added to stop EZF */
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/* stripping important data */
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/* This file is released into the public domain */
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/* for commercial or non-commercial use with no */
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/* restrictions placed upon it. */
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/* NOTE!!!: This linker script defines the RAM & */
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/* ROM start addresses. In order for it to work */
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/* properly, remove -Ttext and -Tbss linker */
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/* options from your makefile if they are */
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/* present. */
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/* You can use the following to view section */
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/* addresses in your .elf file: */
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/* objdump -h file.elf */
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/* Please note that empty sections may incorrectly*/
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/* list the lma address as the vma address for */
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/* some versions of objdump. */
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OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
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OUTPUT_ARCH(arm)
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ENTRY(_start)
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/* SEARCH_DIR(/bin/arm); */
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/* The linker script function "var1 += var2;" sometimes */
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/* reports incorrect values in the *.map file but the */
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/* actual value it calculates is usually, if not always, */
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/* correct. If you leave out the ". = ALIGN(4);" at the */
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/* end of each section then the return value of SIZEOF() */
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/* is sometimes incorrect and "var1 += var2;" appears to */
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/* not work as well. "var1 += var2" style functions are */
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/* avoided below as a result. */
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MEMORY {
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rom : ORIGIN = 0x08000000, LENGTH = 32M
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iwram : ORIGIN = 0x03000000, LENGTH = 32K
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ewram : ORIGIN = 0x02000000, LENGTH = 256K
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}
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__text_start = ORIGIN(rom);
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__eheap_end = ORIGIN(ewram) + LENGTH(ewram);
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__iwram_start = ORIGIN(iwram);
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__iwram_top = ORIGIN(iwram) + LENGTH(iwram);;
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__sp_irq = __iwram_top - 0x060;
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__sp_usr = __sp_irq - 0x0a0;
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__irq_flags = 0x03007ff8;
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SECTIONS
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{
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. = __text_start;
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.init :
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{
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KEEP (*(.init))
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. = ALIGN(4);
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} >rom =0xff
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.plt :
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{
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*(.plt)
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. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
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} >rom
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.text : /* ALIGN (4): */
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{
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*(EXCLUDE_FILE (*.iwram*) .text)
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*(.text .stub .text.* .gnu.linkonce.t.*)
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KEEP (*(.text.*personality*))
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/* .gnu.warning sections are handled specially by elf32.em. */
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*(.gnu.warning)
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*(.glue_7t) *(.glue_7) *(.vfp11_veneer)
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. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
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} >rom = 0xff
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__text_end = .;
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.fini :
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{
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KEEP (*(.fini))
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. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
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} >rom =0
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.rodata :
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{
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*(.rodata)
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*all.rodata*(*)
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*(.roda)
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*(.rodata.*)
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*(.gnu.linkonce.r*)
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SORT(CONSTRUCTORS)
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. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
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} >rom = 0xff
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.ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >rom
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__exidx_start = .;
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.ARM.exidx : { *(.ARM.exidx* .gnu.linkonce.armexidx.*) } >rom
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__exidx_end = .;
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.ctors :
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{
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/* gcc uses crtbegin.o to find the start of the constructors, so
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we make sure it is first. Because this is a wildcard, it
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doesn't matter if the user does not actually link against
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crtbegin.o; the linker won't look for a file to match a
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wildcard. The wildcard also means that it doesn't matter which
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directory crtbegin.o is in. */
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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 (*(.ctors))
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. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
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} >rom = 0
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.dtors :
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{
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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 (*(.dtors))
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. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
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} >rom = 0
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.eh_frame :
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{
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KEEP (*(.eh_frame))
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. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
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} >rom = 0
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.gcc_except_table :
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{
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*(.gcc_except_table)
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. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
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} >rom = 0
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__iwram_lma = .;
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.iwram __iwram_start : AT (__iwram_lma)
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{
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__iwram_start = ABSOLUTE(.) ;
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*(.iwram)
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*iwram.*(.text)
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. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
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__iwram_end = ABSOLUTE(.) ;
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} >iwram = 0xff
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__data_lma = __iwram_lma + SIZEOF(.iwram) ;
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.bss ALIGN(4) (NOLOAD) :
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{
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__bss_start = ABSOLUTE(.);
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__bss_start__ = ABSOLUTE(.);
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*(.dynbss)
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*(.gnu.linkonce.b*)
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*(.bss*)
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*(COMMON)
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. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
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__bss_end = ABSOLUTE(.) ;
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} AT>iwram
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__bss_end__ = __bss_end ;
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.data ALIGN(4) : AT (__data_lma)
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{
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__data_start = ABSOLUTE(.);
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*(.data)
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*(.data.*)
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*(.gnu.linkonce.d*)
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CONSTRUCTORS
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. = ALIGN(4);
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} >iwram = 0xff
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__preinit_lma = __data_lma + SIZEOF(.data);
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PROVIDE (__preinit_array_start = .);
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.preinit_array : AT (__preinit_lma)
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.init_array : AT (__init_lma)
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{
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KEEP (*(SORT(.init_array.*)))
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KEEP (*(.init_array))
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} >iwram
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PROVIDE (__preinit_array_end = .);
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__init_lma = __preinit_lma + SIZEOF(.preinit_array);
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PROVIDE (__init_array_start = .);
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.init_array : AT (__init_lma) { KEEP (*(.init_array)) } >iwram
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PROVIDE (__init_array_end = .);
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PROVIDE (__fini_array_start = .);
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__fini_lma = __init_lma + SIZEOF(.init_array);
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.fini_array : AT (__fini_lma)
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{
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KEEP (*(SORT(.fini_array.*)))
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KEEP (*(.fini_array))
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} >iwram
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PROVIDE (__fini_array_end = .);
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__jcr_lma = __fini_lma + SIZEOF(.fini_array);
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.jcr : AT (__jcr_lma) { KEEP (*(.jcr)) } >iwram
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__data_end = ABSOLUTE(.);
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__iwram_overlay_lma = __jcr_lma + SIZEOF(.jcr);
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__iwram_overlay_start = . ;
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OVERLAY ALIGN(4) : NOCROSSREFS AT (__iwram_overlay_lma)
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{
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.iwram0 { *(.iwram0) . = ALIGN(4);}
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.iwram1 { *(.iwram1) . = ALIGN(4);}
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.iwram2 { *(.iwram2) . = ALIGN(4);}
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.iwram3 { *(.iwram3) . = ALIGN(4);}
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.iwram4 { *(.iwram4) . = ALIGN(4);}
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.iwram5 { *(.iwram5) . = ALIGN(4);}
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.iwram6 { *(.iwram6) . = ALIGN(4);}
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.iwram7 { *(.iwram7) . = ALIGN(4);}
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.iwram8 { *(.iwram8) . = ALIGN(4);}
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.iwram9 { *(.iwram9) . = ALIGN(4);}
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}>iwram = 0xff
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__iwram_overlay_end = . ;
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__ewram_lma = __iwram_overlay_lma + (__iwram_overlay_end - __iwram_overlay_start) ;
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__iheap_start = . ;
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__ewram_start = ORIGIN(ewram);
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.ewram __ewram_start : AT (__ewram_lma)
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{
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*(.ewram)
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. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
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}>ewram = 0xff
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__pad_lma = __ewram_lma + SIZEOF(.ewram);
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.sbss ALIGN(4)(NOLOAD):
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{
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__sbss_start = ABSOLUTE(.);
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*(.sbss)
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. = ALIGN(4);
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__sbss_end = ABSOLUTE(.);
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} AT>ewram
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__ewram_end = __sbss_end ;
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__eheap_start = __sbss_end;
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__end__ = __sbss_end;
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/* EZF Advance strips trailing 0xff bytes, add a pad section so nothing important is removed */
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.pad ALIGN(4) : AT (__pad_lma)
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{
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LONG(0x52416b64)
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LONG(0x4d)
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. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
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} = 0xff
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__rom_end__ = __pad_lma + SIZEOF(.pad);
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/* Stabs debugging sections. */
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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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.stab.exclstr 0 : { *(.stab.exclstr) }
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.stab.index 0 : { *(.stab.index) }
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.stab.indexstr 0 : { *(.stab.indexstr) }
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.comment 0 : { *(.comment) }
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/* DWARF debug sections.
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Symbols in the DWARF debugging sections are relative to the beginning
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of the section so we begin them at 0. */
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/* DWARF 1 */
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.debug 0 : { *(.debug) }
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.line 0 : { *(.line) }
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/* GNU DWARF 1 extensions */
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.debug_srcinfo 0 : { *(.debug_srcinfo) }
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.debug_sfnames 0 : { *(.debug_sfnames) }
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/* DWARF 1.1 and DWARF 2 */
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.debug_aranges 0 : { *(.debug_aranges) }
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.debug_pubnames 0 : { *(.debug_pubnames) }
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/* DWARF 2 */
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.debug_info 0 : { *(.debug_info) }
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.debug_abbrev 0 : { *(.debug_abbrev) }
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.debug_line 0 : { *(.debug_line) }
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.debug_frame 0 : { *(.debug_frame) }
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.debug_str 0 : { *(.debug_str) }
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.debug_loc 0 : { *(.debug_loc) }
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.debug_macinfo 0 : { *(.debug_macinfo) }
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/* SGI/MIPS DWARF 2 extensions */
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.debug_weaknames 0 : { *(.debug_weaknames) }
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.debug_funcnames 0 : { *(.debug_funcnames) }
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.debug_typenames 0 : { *(.debug_typenames) }
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.debug_varnames 0 : { *(.debug_varnames) }
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.stack 0x80000 : { _stack = .; *(.stack) }
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/* These must appear regardless of . */
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.note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) }
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.ARM.attributes 0 : { KEEP (*(.ARM.attributes)) }
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/DISCARD/ : { *(.note.GNU-stack) }
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}
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