source: rtems/c/src/lib/libbsp/sparc/leon/startup/linkcmds @ 9c1133e

/*  linkcmds
 *
 *  $Id$
 */

OUTPUT_ARCH(sparc)
__DYNAMIC  =  0;

/*
 * The memory map looks like this:
 * +--------------------+ <- low memory
 * | .text              |
 * |        etext       |
 * |        ctor list   | the ctor and dtor lists are for
 * |        dtor list   | C++ support
 * |        _endtext    |
 * +--------------------+
 * | .data              | initialized data goes here
 * |        _sdata      |
 * |        _edata      |
 * +--------------------+
 * | .bss               |
 * |        __bss_start | start of bss, cleared by crt0
 * |        _end        | start of heap, used by sbrk()
 * +--------------------+
 * |    heap space      |
 * |        _ENDHEAP    |
 * |    stack space     | 
 * |        __stack     | top of stack
 * +--------------------+ <- high memory
 */


/*
 * User modifiable values:
 *
 * _CLOCK_SPEED               in Mhz (used to program the counter/timers)
 *
 * _PROM_SIZE                 size of PROM (permissible values are 128K, 256K,
 *                               512K, 1M, 2M, 4M, 8M and 16M)
 * _RAM_SIZE                  size of RAM (permissible values are 256K, 512K,
 *                               1M, 2M, 4M, 8M, 16M, and 32M)
 *
 */

/* Default values, can be overridden */

_PROM_SIZE = 2M;
_RAM_SIZE = 4M;

_RAM_START = 0x40000000;
_RAM_END = _RAM_START + _RAM_SIZE;

_PROM_START = 0x00000000;
_PROM_END = _PROM_START + _PROM_SIZE;

/*
 *  Alternate names without leading _.
 */

PROM_START = _PROM_START;
PROM_SIZE = _PROM_SIZE;
PROM_END = _PROM_END;

RAM_START = _RAM_START;
RAM_SIZE = _RAM_SIZE;
RAM_END = _RAM_END;

/*
 *  Base address of the on-CPU peripherals
 */

_LEON_REG = 0x80000000;
LEON_REG = 0x80000000;

/* these are the maximum values */

MEMORY
{
  rom     : ORIGIN = 0x00000000, LENGTH = 256M
  ram     : ORIGIN = 0x40000000, LENGTH = 1024M
}

/*
 * stick everything in ram (of course)
 */
SECTIONS
{
  .text :
  {
    CREATE_OBJECT_SYMBOLS
    text_start = .;
    _text_start = .;
    *(.text)
    . = ALIGN (16);

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

    *(.eh_frame)
    . = ALIGN (16);

    *(.gnu.linkonce.t*)

    /*
     * C++ constructors
     */
    __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__ = .;

    _rodata_start = . ;
    *(.rodata*)
    *(.gnu.linkonce.r*)
    _erodata = ALIGN( 0x10 ) ;

    etext = ALIGN(0x10);
    _etext = .;
    *(.init)
    *(.fini)
    *(.lit)
    *(.shdata)
    . = ALIGN (16);
    _endtext = .;
  } > ram
  .dynamic        : { *(.dynamic)       } >ram
  .jcr            : { *(.jcr)           } >ram
  .got            : { *(.got)           } >ram
  .plt            : { *(.plt)           } >ram
  .hash           : { *(.hash)          } >ram
  .dynrel         : { *(.dynrel)        } >ram
  .dynsym         : { *(.dynsym)        } >ram
  .dynstr         : { *(.dynstr)        } >ram
  .hash           : { *(.hash)          } >ram
  .data :
  {
    data_start = .;
    _data_start = .;
    _sdata = . ;
    *(.data)
    *(.gnu.linkonce.d*)
    *(.gcc_except_table)
    . = ALIGN(0x10);
    edata = .;
    _edata = .;
  } > ram
  .shbss :
  {
    *(.shbss)
  } > ram
  .bss :
  {
    __bss_start = ALIGN(0x8);
    _bss_start = .;
    bss_start = .;
    *(.bss)
    *(COMMON)
    end = .;
    _end = ALIGN(0x8);
    __end = ALIGN(0x8);
  } > ram
  .stab . (NOLOAD) :
  {
    [ .stab ]
  }
  .stabstr . (NOLOAD) :
  {
    [ .stabstr ]
  }
}