path: root/c/src/lib/libbsp/arm/gp32/startup/linkcmds

/*
 *  GP32 Linker script
 *
 *  Written by Philippe Simons <loki_666@fastmail.fm>
 *
 *  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.
 *
 *  $Id$
 */
OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm","elf32-littlearm")
OUTPUT_ARCH(arm)
ENTRY(_start)
/* SEARCH_DIR(/usr/local/rtems-arm-dev-tools/arm-rtems/lib); */


MEMORY {
	sdram : ORIGIN = 0xc000000, LENGTH = 7M
}

/*
 * Declare some sizes.
 */

/* The base for SDRAM is set to umon's APPRAMBASE */
_sdram_base = DEFINED(_sdram_base) ? _sdram_base : 0xc000000;
_sdram_size = DEFINED(_sdram_size) ? _sdram_size : 7M;


_irq_stack_size = DEFINED(_irq_stack_size) ? _irq_stack_size : 0x1000;
_fiq_stack_size = DEFINED(_fiq_stack_size) ? _fiq_stack_size : 0x400;
_abt_stack_size = DEFINED(_abt_stack_size) ? _abt_stack_size : 0x100;
_svc_stack_size = DEFINED(_svc_stack_size) ? _svc_stack_size : 0x1000;



/* Do we need any of these for elf?
   __DYNAMIC = 0;    */

SECTIONS
{
  .base :
  {
    arm_exception_table = .;    

    arm_reset_vect    = .;     /* 0x00 */
    . += 4;

    arm_undef_vect    = .;     /* 0x04 */
    . += 4;

    arm_swi_vect      = .;     /* 0x08 */
    . += 4;

    arm_iabrt_vect    = .;     /* 0x0c */
    . += 4;

    arm_dabrt_vect    = .;     /* 0x10 */
    . += 4;

    /* no vector here */
    . += 4;

    arm_irq_vect      = .;     /* 0x18 */
    . += 4;

    arm_fiq_vect      = .;     /* 0x1c */
    . += 4;
			      /* FIXME: */

    rtems_vector_table = .;
    . += (8 * 4);                     /* 8 ARM interrupts */
	
    bsp_vector_table = .;
    . += (32 * 4);                    /* 32 S3C2400 interrupts */

    . = ALIGN (0x100);


  } > sdram


  .text      :
  {
    _axf_text_start = . ;
    *(EXCLUDE_FILE (*text.iwram*) .text)
    *(.text.*)
    *(.stub)

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

    /* .gnu.warning sections are handled specially by elf32.em.  */
    *(.gnu.warning)
    *(.gnu.linkonce.t*)
    *(.glue_7)
    *(.glue_7t)

    . = ALIGN(4);  /* REQUIRED. LD is flaky without it. */
  } > sdram

  __text_end = . ;

  .init          : 
  { 
    *(.init)
  } > sdram   /*=0*/

  .jcr : 
  { 
    *(.jcr) 
  } > sdram


  .fini      :
  {
    *(.fini)
  } > sdram  /*=0*/

  .rodata :
  {
    *(.rodata)
    *all.rodata*(*)
    *(.roda)
    *(.rodata.*)
    *(.gnu.linkonce.r*)
    SORT(CONSTRUCTORS)
    . = ALIGN(4);   /* REQUIRED. LD is flaky without it. */
  } > sdram = 0xff

  .ctors :
  {
    /* gcc uses crtbegin.o to find the start of the constructors, 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.  */
    KEEP (*crtbegin.o(.ctors))
    KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
    KEEP (*(SORT(.ctors.*)))
    KEEP (*(.ctors))
    . = ALIGN(4);   /* REQUIRED. LD is flaky without it. */
  } >sdram = 0

  .dtors :
  {
    KEEP (*crtbegin.o(.dtors))
    KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
    KEEP (*(SORT(.dtors.*)))
    KEEP (*(.dtors))
    . = ALIGN(4);   /* REQUIRED. LD is flaky without it. */
  } >sdram = 0


  .eh_frame :
  {
    KEEP (*(.eh_frame))
    . = ALIGN(4);   /* REQUIRED. LD is flaky without it. */
  } >sdram = 0

  .gcc_except_table :
  {
    *(.gcc_except_table)
    . = ALIGN(4);   /* REQUIRED. LD is flaky without it. */
  } >sdram = 0
  _axf_ro_end = . ;

  .data ALIGN(4) :
  {
    _axf_data_start = ABSOLUTE(.);
    *(.data)
    *(.data.*)
    *(.gnu.linkonce.d*)
    CONSTRUCTORS
    . = ALIGN(4);  /* REQUIRED. LD is flaky without it. */
  } >sdram = 0xff

  __data_end  =  . ;

  .bss ALIGN(4):
  {
	_axf_bss_start = ABSOLUTE(.);
	_clear_start = .;
	*(.bss)
	*(.bss.*)
	*(.gnu.linkonce.b.*)
	*(COMMON)
	. = ALIGN(64);
	_clear_end = .;

	. = ALIGN (256);
	_abt_stack = .;
	. += _abt_stack_size;

	. = ALIGN (256);
	_irq_stack = .;
	. += _irq_stack_size;

	. = ALIGN (256);
	_fiq_stack = .;
	. += _fiq_stack_size;

	. = ALIGN (256);
	_svc_stack = .;
	. += _svc_stack_size;

/* 
 * Ideally, the MMU's translation table would be in SRAM. But we
 * don't have any. If we don't use more regions than TLB entries (64),
 * the lookup will only happen once for each region.
 */
	. = ALIGN (16 * 1024);
	_ttbl_base = .;
	. += (16 * 1024);

	. = ALIGN (1024);
	_bss_free_start = .;

  } > sdram
  _axf_bss_end = . ;

  _end = . ;
  __end__ = . ;
  PROVIDE (end = _end);


/* Debugging stuff follows? */

  /* 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) } 
  /*.stack 0x80000 : { _stack = .; *(.stack) }*/
  /* These must appear regardless of  .  */
}