Subversion Repositories openrisc_2011-10-31

/*

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

 *  to the Motorola MVME167 board. This linker script produces ELF

 *  executables.

 *

 *  Copyright (c) 1999, National Research Council of Canada.

 *  Some of this material was copied from binutils-2.9.4 linker scripts,

 *  and is therefore likely to be copyrighted by the Free Software

 *  Foundation, even though explicit copyright notices did not appear in

 *  those files.

 *

 *  The license and distribution terms for this file may be

 *  found in the file LICENSE in this distribution or at

 *  http://www.OARcorp.com/rtems/license.html.

 *

 *  $Id: elflinkcmds,v 1.2 2001-09-27 12:00:20 chris Exp $

 */

/* These are not really needed here */

OUTPUT_FORMAT("elf32-m68k")

OUTPUT_ARCH(m68k)

ENTRY(_start)

/*

 * Declare some sizes.

 */

_HeapSize = DEFINED(_HeapSize) ? _HeapSize : 0x10000;

_StackSize = DEFINED(_StackSize) ? _StackSize : 0x1000;

MEMORY

{

  /*  The location of RAM is the address space is configurable.

      This is where we put one board. The base address should be

      passed as a parameter when building multiprocessor images

      where each board resides at a different address. */

  ram  : org = 0x00800000, l = 4M

  rom  : org = 0xFF800000, l = 4M

  sram : org = 0xFFE00000, l = 128K

}

SECTIONS

{

  /*

   * We want the entry point to be the first thing in memory.

   * Merge all read-only data into the .text section.

   */

  .text 0x00800000 :

  {

    text_start = . ;

    *(.text)

    *(.text.*)

    *(.stub)

    /* C++ constructors/destructors */

    *(.gnu.linkonce.t*)

    /* Initialization and finalization code.

     *

     * Various files can provide initialization and finalization functions.

     * crtbegin.o and crtend.o are two instances. The body of these functions

     * are in .init and .fini sections. We accumulate the bodies here, and

     * prepend function prologues from crti.o and function epilogues from

     * crtn.o. crti.o must be linked first; crtn.o must be linked last.

     * Because these are wildcards, it doesn't matter if the user does not

     * actually link against crti.o and crtn.o; the linker won't look for a

     * file to match a wildcard.  The wildcard also means that it doesn't

     * matter which directory crti.o and crtn.o are in.

     */

    PROVIDE (_init = .);

    *crti.o(.init)

    *(.init)

    *crtn.o(.init)

    PROVIDE (_fini = .);

    *crti.o(.fini)

    *(.fini)

    *crtn.o(.init)

    . = ALIGN (16);

    /* C++ constructors and destructors for static objects.

     *

     * gcc uses crtbegin.o to find the start of the constructors and

     * destructors so we make sure it is first.  Because this is a wildcard,

     * it doesn't matter if the user does not actually link against

     * crtbegin.o; the linker won't look for a file to match a wildcard.  The

     * wildcard also means that it doesn't matter which directory crtbegin.o

     * is in. The constructor and destructor list are terminated in crtend.o.

     * The same comments apply to it.

     */

    PROVIDE (__CTOR_LIST__ = .);

    *crtbegin.o(.ctors)

    *(.ctors)

    *crtend.o(.ctors)

    PROVIDE (__CTOR_END__ = .);

    PROVIDE (__DTOR_LIST__ = .);

    *crtbegin.o(.dtors)

    *(.dtors)

    *crtend.o(.dtors)

    PROVIDE (__DTOR_END__ = .);

    . = ALIGN (16);

    /* Exception frame info */

    *(.eh_frame)

    . = ALIGN (16);

    /* Do we have any of these with egcs-1.x and higher? */

    *(.gcc_exc)

    . = ALIGN (16);

    _rodata_start = . ;

    *(.rodata)

    *(.rodata.*)

    *(.gnu.linkonce.r*)

    *(.rodata1)

    _erodata = .;

    _etext = .;

    PROVIDE (etext = .);

  } >ram =0x4e75

  . = ALIGN (16);

  .data :

  {

    data_start = .;

    *(.data)

    *(.data.*)

    *(.data1)

    *(.sdata)

    *(.gnu.linkonce.d*)

    *(.gcc_except_table)

    . = ALIGN (16);

    _edata = .;

    PROVIDE (edata = .);

  } >ram

  .bss :

  {

    bss_start = .;

    *(.dynbss)

    *(.bss)

    *(COMMON)

    *(.sbss)

    *(.scommon)

    . = ALIGN (16);

    _end = .;

    PROVIDE (end = .);

  } >ram

  _HeapStart    = .;

  . += HeapSize;        /* XXX -- Old gld can't handle this     */

  _HeapEnd = .;

  _StackStart = .;

  . += _StackSize;      /* XXX -- Old gld can't handle this     */

  /* . +=       0x10000; */     /* HeapSize     for     old     gld     */

  /* . +=       0x1000;  */     /* _StackSize for old gld */

  . =   ALIGN (16);

  _StackEnd = .;

  stack_init = .;

  clear_end =   .;

  _WorkspaceBase        = .;

  /* 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) }

  /* SGI/MIPS DWARF 2 extensions */

  .debug_weaknames 0 : { *(.debug_weaknames) }

  .debug_funcnames 0 : { *(.debug_funcnames) }

  .debug_typenames 0 : { *(.debug_typenames) }

  .debug_varnames  0 : { *(.debug_varnames) }

  /* These must appear regardless of  .  */

}