Subversion Repositories openrisc_2011-10-31

/*

 *  This file contains directives for the GNU linker which are specific

 *  to the helas-403

 *  This file is intended to be used together with flashentry.s

 *  it will generate a ROM that can be started directly after powerup reset

 *  $Id: linkcmds,v 1.2 2001-09-27 12:00:36 chris Exp $

 */

OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc",

              "elf32-powerpc")

OUTPUT_ARCH(powerpc)

 SEARCH_DIR(/usr/local/powerpc-rtems/lib);

ENTRY(flash_entry)

MEMORY

  {

        RAM : ORIGIN = 0, LENGTH = 8M

        FLASH : ORIGIN = 0xFFF00000, LENGTH = 512K

  }

  /* DIRTY TRICK: repeat addresses here, so we can work with them... */

  flash.start = 0xFFF00000;

  flash.size  = 512K;

SECTIONS

{

  .entry :

  {

     *(.entry)

  } > FLASH /* this is ROM for flash_entry */

  .text :

  {

     text.start = . ;

     *(.entry2)

     *(.text)

     *(.rodata)

     *(.rodata1)

     *(.descriptors)

     *(rom_ver)

     etext = ALIGN(0x10);

     _etext = .;

     __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__ = .;

     *(.lit)

     *(.shdata)

     *(.init)

     *(.fini)

     . = ALIGN(0x10);

     _endtext = .;

     text.end = .;

     copy.src = .;

     copy.tmptop.txt = .;

  } > FLASH /* this is ROM for flash_entry */

  text.size = text.end - text.start;

  /* R/W Data */

  /* place vectors to start at offset 0x100... */

  /* IMPORTANT: sections ".fill" and ".vectors" must be the first in RAM!!*/

  .fill 0x00010000 :

  {

    . = . + 0x0100;

  } > RAM

  .vectors :              AT (copy.src)

  {

    copy.dest = .;

    *(.vectors)

    . = ALIGN(0x10);

    copy.tmptop.vec = .;

  } > RAM

  .data :                 AT (copy.tmptop.vec - copy.dest + copy.src)

  {

    *(.data)

    *(.data1)

    PROVIDE (__SDATA_START__ = .);

    *(.sdata)

    . = ALIGN(0x10);

    copy.tmptop.dat = .;

  } > RAM

  PROVIDE (__EXCEPT_START__ = .);

  .gcc_except_table   :   AT (copy.tmptop.dat - copy.dest + copy.src)

  {

    *(.gcc_except_table)

    . = ALIGN(0x10);

    copy.tmptop.exc = .;

  } >RAM

  PROVIDE (__EXCEPT_END__ = .);

  __GOT_START__ = .;

  .got :                  AT (copy.tmptop.exc - copy.dest + copy.src)

  {

    s.got = .;

    *(.got.plt) *(.got)

    . = ALIGN(0x10);

    copy.tmptop.got = .;

  } > RAM

  __GOT_END__ = .;

  .got1 :                 AT (copy.tmptop.got - copy.dest + copy.src)

  {

    *(.got1)

    . = ALIGN(0x10);

    copy.tmptop.gt1 = .;

  } >RAM

  PROVIDE (__GOT2_START__ = .);

  PROVIDE (_GOT2_START_ = .);

  .got2           :       AT (copy.tmptop.gt1 - copy.dest + copy.src)

  {

    *(.got2)

    . = ALIGN(0x10);

    copy.tmptop.gt2 = .;

  } >RAM

  PROVIDE (__GOT2_END__ = .);

  PROVIDE (_GOT2_END_ = .);

  PROVIDE (__FIXUP_START__ = .);

  PROVIDE (_FIXUP_START_ = .);

  .fixup          :       AT (copy.tmptop.gt2 - copy.dest + copy.src)

  {

    *(.fixup)

    . = ALIGN(0x10);

    copy.tmptop.fix = .;

  } >RAM

  PROVIDE (_FIXUP_END_ = .);

  PROVIDE (__FIXUP_END__ = .);

  PROVIDE (__SDATA2_START__ = .);

  .sdata2         :       AT (copy.tmptop.fix - copy.dest + copy.src)

  {

    *(.sdata2)

    . = ALIGN(0x10);

    copy.tmptop.sda = .;

  } >RAM

  copy.size = copy.tmptop.sda - copy.dest;

  .sbss2          :

  {

    *(.sbss2)

  } >RAM

  PROVIDE (__SBSS2_END__ = .);

  __SBSS_START__ = .;

  .bss :

  {

    bss.start = .;

    *(.bss) *(.sbss) *(COMMON)

    bss.end = ALIGN(4);

  } > RAM

  __SBSS_END__ = .;

  bss.size = bss.end - bss.start;

  /* reserve 16KByte for stack... */

  stack.end = bss.end + 16K;

  PROVIDE(_end = stack.end);

  .line 0 : { *(.line) }

  .debug 0 : { *(.debug) }

  .debug_sfnames 0 : { *(.debug_sfnames) }

  .debug_srcinfo 0 : { *(.debug_srcinfo) }

  .debug_pubnames 0 : { *(.debug_pubnames) }

  .debug_aranges 0 : { *(.debug_aranges) }

  .debug_aregion 0 : { *(.debug_aregion) }

  .debug_macinfo 0 : { *(.debug_macinfo) }

  .stab 0 : { *(.stab) }

  .stabstr 0 : { *(.stabstr) }

  /*

   * place reset instruction into last word of FLASH

   * NOTE: after reset, PPC403 starts executing from address

   * 0xFFFFFFFC

   * The reset section is placed in ROM at 0xF7FFFFFC instead,

   * but a mirror of this address exists at 0xFFFFFFFC due to

   * the initial memory controller setup

   */

  .reset  flash.start - 4 + flash.size :

  {

    *(.reset)

  } > FLASH

}