mirror of
https://github.com/oopuuu/zTC1.git
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158 lines
3.4 KiB
Plaintext
158 lines
3.4 KiB
Plaintext
/*
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* Script for GNU linker.
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* Describes layout of sections, location of stack.
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*
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* In this case vectors are at location 0 (reset @ 0x08)
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*
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*
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*
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* +------------+ 0x0040000
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* Vect redirect 32
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* +------------+
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*
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* +------------+ 0x00400020
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* data |
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* end
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* |(heap) |
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* . .
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* . .
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* |(heap limit)|
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*
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* |- - - - - - |
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* stack bottom 256k
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* +------------+
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*
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*
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* +------------+ 0x0000000
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* |Bootloader |
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* | | 64k
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* +------------+ 0x0010000
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* | Para 1 | 4k
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* +------------+
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* | Para 2 | 4k
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* +------------+ 0x0012000
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* |vectors |
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* | |
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* |------------+
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* |text |
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* |data | 632k
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* | |
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* +------------+
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*
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*
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* +------------+ 0x00B0000
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* | |
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* | |
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* | OTA TEMP |
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* | |
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* | |
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* | | 320k
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* +------------+
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*/
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/* Split memory into area for vectors and ram */
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MEMORY
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{
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flash (rx) : ORIGIN = 0x00000000, LENGTH = 64k
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ram (rwx): ORIGIN = 0x00400020, LENGTH = 256k - 32
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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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ENTRY(_vector_start);
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_vector_start = 0x00000000;
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SECTIONS
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{
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/* vectors go to vectors region */
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. = 0x00000000;
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.vectors :
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{
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KEEP(*(*.vectors))
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} > flash
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/* instructions go to the text region*/
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. = ALIGN(0x8);
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/* code, instructions.for example: i=i+1; */
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.text :
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{
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*(.text)
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*(.text.*)
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*(.stub)
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/* .gnu.warning sections are handled specially by elf32.em. */
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*(.gnu.warning)
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*(.gnu.linkonce.t*)
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*(.glue_7t) *(.glue_7)
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} > flash
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/* read only data.for example: const int rom_data[3]={1,2,3}; */
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.rodata ALIGN(8) :
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{
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*(.rodata)
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*(.rodata.*)
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*(.gnu.linkonce.r*)
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} > flash
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.ARM.exidx :
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{
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*(.ARM.exidx*)
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*(.gnu.linkonce.armexidx.*)
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} > flash
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/* globals.for example: int ram_data[3]={4,5,6}; */ /* VMA in RAM, but keep LMA in flash */
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. = ALIGN(0x8);
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_begin_data = .;
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.data : AT ( _begin_data )
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{
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*(.data .data.*)
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*(.sdata)
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*(.gnu.linkonce.d*)
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SORT(CONSTRUCTORS)
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} >ram
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/* Loader will copy data from _flash_begin to _ram_begin..ram_end */
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_data_flash_begin = LOADADDR(.data);
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_data_ram_begin = ADDR(.data);
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_data_ram_end = .;
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/* uninitialized data section - global int i; */
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.bss ALIGN(8):
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{
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_bss_start = .;
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*(.bss .bss.*)
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*(.scommon)
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*(.sbss)
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*(.dynbss)
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*(COMMON)
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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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. = ALIGN(32 / 8);
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_bss_end = .;
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} > ram /* in RAM */
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. = ALIGN (8);
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_empty_ram = .;
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/* This symbol defines end of code/data sections. Heap starts here. */
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PROVIDE(end = .);
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/* _stack symbol defines initial stack bottom addres. Stack grows to lower addresses.
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Typically you set this to be top of your RAM. Note: code never checks, if stack
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grows into heap area!
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*/
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PROVIDE(_stack_unused = 0x440000 - 0xFF0 - 0x7F0 - 0xFF0 - 0xFF0 - 0x10); /* 0x10*/
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PROVIDE(_stack_svc = 0x440000 - 0xFF0 - 0x7F0 - 0xFF0 - 0xFF0); /* 0xFF0*/
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PROVIDE(_stack_irq = 0x440000 - 0xFF0 - 0x7F0 - 0xFF0); /* 0xFF0*/
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PROVIDE(_stack_fiq = 0x440000 - 0xFF0 - 0x7F0); /* 0x7F0*/
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PROVIDE(_stack_sys = 0x440000 - 0xFF0); /* 0xFF0*/
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}
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GROUP(
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libgcc.a
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libg.a
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libc.a
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libm.a
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libnosys.a
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) |