linkcmds

RTEMS (Real-Time Executive for Multiprocessor Systems) is a free open source real-time operating sys

/*
 * This file contains GNU linker directives for an MCF5206eLITE
 * evaluation board.
 *
 * Variations in memory size and allocation can be made by
 * overriding some values with linker command-line arguments.
 *
 * Copyright (C) 2000 OKTET Ltd., St.-Petersburg, Russia
 * Author: Victor V. Vengerov <[e-mail]>
 *
 * This file based on work:
 * David Fiddes, [e-mail]
 * http://www.calm.hw.ac.uk/davidf/coldfire/
 *
 * 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: linkcmds,v 1.4.2.1 2003/09/04 18:44:30 joel Exp $
 */

/*
 * Declare some sizes.
 * XXX: The assignment of ". += XyzSize;" fails in older gld's if the
 *      number used there is not constant.  If this happens to you, edit
 *      the lines marked XXX below to use a constant value.
 */
/*
 * Declare size of heap.
 * A heap size of 0 means "Use all available memory for the heap".
 * Initial stack located in on-chip SRAM and not declared there.
 */
_HeapSize = DEFINED(_HeapSize) ? _HeapSize : 0x0;

/*
 * Declare system clock frequency.
 */
_SYS_CLOCK_FREQUENCY = DEFINED(_SYS_CLOCK_FREQUENCY) ? _SYS_CLOCK_FREQUENCY : 54000000;

/*
 * Setup the memory map of the MCF5206eLITE evaluation board
 *
 * The "rom" section is in USER Flash on the board
 * The "ram" section is placed in USER RAM starting at 10000h
 * 
 */
MEMORY
{
  ram     : ORIGIN = 0x30000000, LENGTH = 0x00100000
  rom     : ORIGIN = 0xFFE20000, LENGTH = 128k 
}

MBase = 0x10000000;

/* Interrupt Vector table located at start of external static RAM */
_VBR = 0x30000000;

SECTIONS
{
     
  /*
   * Dynamic RAM
   */
  ram : {
          _RamBase = .;
          __RamBase = .;
          /* Reserve space for interrupt table */
          . += 0x400;
  } >ram 

  /*
   * Text, data and bss segments
   */
   .text : {
	   CREATE_OBJECT_SYMBOLS
	   *(.text)

	   /*
	    * C++ constructors/destructors
	    */
	   *(.gnu.linkonce.t.*)

	   /*
	    * Initialization and finalization code.
	    */
	   . = ALIGN (16);
	   PROVIDE (_init = .);
	   *crti.o(.init)
	   *(.init)
	   *crtn.o(.init)
	   . = ALIGN (16);
	   PROVIDE (_fini = .);
	   *crti.o(.fini)
	   *(.fini)
	   *crtn.o(.fini)

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

	   /*
	    * C++ constructors/destructors
	    */
	   . = ALIGN (16);
	   *crtbegin.o(.ctors)
	   *(.ctors)
	   *crtend.o(.ctors)
	   *crtbegin.o(.dtors)
	   *(.dtors)
	   *crtend.o(.dtors)

	   /*
	    * Exception frame info
	    */
	   . = ALIGN (16);
	   *(.eh_frame)

	   /*
	    * Read-only data
	    */
	   . = ALIGN (16);
	   _rodata_start = .;
	   *(.rodata*)
	   *(.gnu.linkonce.r*)

	   . = ALIGN (16);
           PROVIDE (etext = .);

   } > ram

   .data BLOCK (0x4) : {
           copy_start = .;
           *(.shdata)
           . = ALIGN (0x10);
           *(.data)
           . = ALIGN (0x10);
           *(.gcc_exc)
           *(.gcc_except_table)
	   *(.jcr)
           . = ALIGN (0x10);
           *(.gnu.linkonce.d*)
           . = ALIGN (0x10);
           _edata = .;
	   copy_end = .;
   } > ram

  .bss BLOCK (0x4) :
  {
    clear_start = . ;
    *(.shbss)
    *(.bss)
    *(COMMON)
    . = ALIGN(0x10);
    _end = .;
    
    clear_end = .;

    _WorkspaceBase = .;
    __WorkspaceBase = .;

  } > ram

  .stab 0 (NOLOAD) :
  {
    *(.stab)
  }

  .stabstr 0 (NOLOAD) :
  {
    *(.stabstr)
  }
 
}