source: rtems/c/src/lib/libbsp/arm/rtl22xx/startup/linkcmds @ 716f6be

/*
 * Philips lpc ARM linker script
 * By Ray,Xu
 * Rayx.cn@gmail.com
 *      
 *  LPC22xx ARM do not have a MMU, the formatter got 512kb SRAM
 *  I set the code entry to the beging of SRAM for debugging perpurse
 *      
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *
 *  http://www.rtems.com/license/LICENSE.
 *
 *
 *  $Id$
 */

OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm",
              "elf32-littlearm")
OUTPUT_ARCH(arm)
ENTRY(_start)


MEMORY {
        sdram : ORIGIN = 0x81000000, LENGTH = 512K
        sram : ORIGIN = 0x40000000, LENGTH = 16K
        regs  : ORIGIN = 0xe0000000, LENGTH = 2M
}

/*
 * Declare some sizes.
 */

_sdram_base = DEFINED(_sdram_base) ? _sdram_base : 0x81000000;
_sdram_size = DEFINED(_sdram_size) ? _sdram_size : 512K;


_irq_stack_size = DEFINED(_irq_stack_size) ? _irq_stack_size : 0x100;
_fiq_stack_size = DEFINED(_fiq_stack_size) ? _fiq_stack_size : 0x50;
_abt_stack_size = DEFINED(_abt_stack_size) ? _abt_stack_size : 0x50;
_svc_stack_size = DEFINED(_svc_stack_size) ? _svc_stack_size : 0x500;



/* Do we need any of these for elf?
   __DYNAMIC = 0;    */

SECTIONS
{
  .base :
  {
    _sram_base = .;
    arm_exception_table = .;    

    arm_reset_vect    = .;     /* 0x00 */
    . += 4;

    arm_undef_vect    = .;     /* 0x04 */
    . += 4;

    arm_swi_vect      = .;     /* 0x08 */
    . += 4;

    arm_iabrt_vect    = .;     /* 0x0c */
    . += 4;

    arm_dabrt_vect    = .;     /* 0x10 */
    . += 4;

    /* no vector here */
    . += 4;

    arm_irq_vect      = .;     /* 0x18 */
    . += 4;

    arm_fiq_vect      = .;     /* 0x1c */
    . += 4;


    rtems_vector_table = .;
    . += (8 * 4);                     /* 8 ARM interrupts */
        
    /*bsp_vector_table = .;*/
     /*. += (64 * 4);                    64 LPC22xx interrupts */

    . = ALIGN (0x100);

  } > sram


  .text      :
  {
        _text_start = .;
         CREATE_OBJECT_SYMBOLS
        *(.text) 
        *(.text.*)

        /*
         * Special FreeBSD sysctl sections.
         */
        . = ALIGN (16);
        __start_set_sysctl_set = .;
        *(set_sysctl_*);
        __stop_set_sysctl_set = ABSOLUTE(.);
        *(set_domain_*);
        *(set_pseudo_*);

        /* .gnu.warning sections are handled specially by elf32.em.  */
        *(.gnu.warning)
        *(.gnu.linkonce.t*)
        *(.glue_7)
        *(.glue_7t)

        /* I think these come from the ld docs: */      
        ___CTOR_LIST__ = .;
        LONG((___CTOR_END__ - ___CTOR_LIST__) / 4 - 2)
        *(.ctors)
        LONG(0)
        ___CTOR_END__ = .;
        ___DTOR_LIST__ = .;
        LONG((___DTOR_END__ - ___DTOR_LIST__) / 4 - 2)
        *(.dtors)
        LONG(0)
        ___DTOR_END__ = .;

        _etext = .;
        PROVIDE (etext = .);
  } > sdram  

  .init          : 
  { 
    KEEP (*(.init))
  } > sdram   /*=0*/

  .fini      :
  {
    KEEP (*(.fini))
  } > sdram  /*=0*/

  .data :
  { 
    *(.data)
    *(.data.*)
    *(.gnu.linkonce.d*)
    *(.jcr)
    SORT(CONSTRUCTORS)
    _edata = .;
  } > sdram 

  .eh_frame : { *(.eh_frame) } > sdram
  .data1   : { *(.data1) } > sdram
  .eh_frame : { *(.eh_frame) } > sdram
  .gcc_except_table : { *(.gcc_except_table) } > sdram

  .rodata :
  {
    *(.rodata)
    *(.rodata.*)
    *(.gnu.linkonce.r*)
  } > sdram

  .bss       :
  {
        _bss_start_ = .;
        _clear_start = .;
        *(.bss)
        *(.bss.*)
        *(.gnu.linkonce.b.*)
        *(COMMON)
        . = ALIGN(256);
        _clear_end = .;

        . = ALIGN (64);
        _abt_stack = .;
        . += _abt_stack_size;

        . = ALIGN (256);
        _irq_stack = .;
        . += _irq_stack_size;

        . = ALIGN (64);
        _fiq_stack = .;
        . += _fiq_stack_size;

        . = ALIGN (64);
        _svc_stack = .;
        . += _svc_stack_size;

        _bss_end_ = .;
        _end = .;
        __end = .;

        _bss_free_start = .;
        . = ALIGN (1024);
  } > sdram

/*
  .regs :
  {
        lpc22xx_regs_base = .;
        lpc22xx_regs = .;
        . += 8192;
  } > regs
*/


/* Debugging stuff follows? */

  /* Stabs debugging sections.  */
  .stab 0 : { *(.stab) } 
  .stabstr 0 : { *(.stabstr) } 
  .stab.excl 0 : { *(.stab.excl) } 
  .stab.exclstr 0 : { *(.stab.exclstr) }
  .stab.index 0 : { *(.stab.index) } 
  .stab.indexstr 0 : { *(.stab.indexstr) } 
  .comment 0 : { *(.comment) }
  /* DWARF debug sections.
     Symbols in the DWARF debugging sections are relative to the beginning
     of the section so we begin them at 0.  */
  /* DWARF 1 */
  .debug          0 : { *(.debug) }
  .line           0 : { *(.line) }
  /* GNU DWARF 1 extensions */
  .debug_srcinfo  0 : { *(.debug_srcinfo) }
  .debug_sfnames  0 : { *(.debug_sfnames) }
  /* DWARF 1.1 and DWARF 2 */
  .debug_aranges  0 : { *(.debug_aranges) }
  .debug_pubnames 0 : { *(.debug_pubnames) }
  /* DWARF 2 */
  .debug_info     0 : { *(.debug_info) }
  .debug_abbrev   0 : { *(.debug_abbrev) }
  .debug_line     0 : { *(.debug_line) }
  .debug_frame    0 : { *(.debug_frame) }
  .debug_str      0 : { *(.debug_str) } 
  .debug_loc      0 : { *(.debug_loc) }
  .debug_macinfo  0 : { *(.debug_macinfo) } 

  /*.stack 0x80000 : { _stack = .; *(.stack) }*/
  /* These must appear regardless of  .  */
}