link.xn

MIPS架构UCOS-ii移植例程

/**************************************************************************
*                                                                         *
*   PROJECT     : MIPS port for uC/OS-II                                  *
*                                                                         *
*   MODULE      : link.xn                                                 *
*                                                                         *
*   AUTHOR      : Michael Anburaj                                         *
*                 URL  : http://geocities.com/michaelanburaj/             *
*                 EMAIL: [e-mail]                       *
*                                                                         *
*   PROCESSOR   : MIPS 4Kc (32 bit RISC) - ATLAS board                    *
*                                                                         *
*   TOOL-CHAIN  : SDE & Cygnus                                            *
*                                                                         *
*   DESCRIPTION :                                                         *
*   Linker script file                                                    *
*                                                                         *
**************************************************************************/

OUTPUT_FORMAT("elf32-bigmips", "elf32-bigmips", "elf32-littlemips")
OUTPUT_ARCH(mips)

/**** Start point ****/
ENTRY(_start)			/* Entry point of application		*/

MEMORY
{
    ram (wx) : ORIGIN = 0x80000000, LENGTH = 64M
}

SECTIONS
{
  /**** Code and read-only data ****/

  .text 0x80100000 :
  {
    _ftext = ABSOLUTE(.) ;	/* Start of code and read-only data	*/
    init.o (.text) 		/* Entry point				*/
    *(.text)
    _ecode = ABSOLUTE(.) ;	/* End of code				*/

    *(.rodata)

    . = ALIGN(8);
    _etext = ABSOLUTE(.);	/* End of code and read-only data	*/
  } > ram

  /**** Initialised data ****/

  .data :
  {
    _fdata = ABSOLUTE(.);	/* Start of initialised data		*/
    *(.data)
   
    . = ALIGN(8);

    _gp = ABSOLUTE(. + 0x7ff0); /* Base of small data			*/

    *(.lit8) 
    *(.lit4) 
    *(.sdata) 

    . = ALIGN(8);

    _edata  = ABSOLUTE(.);	/* End of initialised data		*/
  } > ram

  /**** Uninitialised data ****/

  _fbss = .;			/* Start of uninitialised data		*/

  .sbss : 
  { 
    *(.sbss) 
    *(.scommon)
  }
  .bss :
  {
    *(.bss)
    *(COMMON)

    /* Allocate room for stack */
    .   =  ALIGN(8) ;
    _freemem = .;
  }

  _end = . ;			/* End of unitialised data		*/

  .gptab.sdata : { *(.gptab.data) *(.gptab.sdata) }
  .gptab.sbss : { *(.gptab.bss) *(.gptab.sbss) }

  /DISCARD/ :
  {
    *(.reginfo)
  }

  PROVIDE(etext = _etext);
  PROVIDE (edata = .);
  PROVIDE (end = .);
}