Subversion Repositories openrisc_2011-10-31

/*

Copyright (c) 2005,2008,2009 Red Hat Incorporated.

All rights reserved.

Redistribution and use in source and binary forms, with or without

modification, are permitted provided that the following conditions are met:

    Redistributions of source code must retain the above copyright

    notice, this list of conditions and the following disclaimer.

    Redistributions in binary form must reproduce the above copyright

    notice, this list of conditions and the following disclaimer in the

    documentation and/or other materials provided with the distribution.

    The name of Red Hat Incorporated may not be used to endorse

    or promote products derived from this software without specific

    prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

DISCLAIMED.  IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY

DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

/* Default linker script, for normal executables */

OUTPUT_ARCH(rx)

ENTRY(_start)

/* Do we need any of these for elf?

   __DYNAMIC = 0;    */

/* This memory layout corresponds to the smallest predicted RX600 chip.  */

MEMORY {

        RAM (w)   : ORIGIN = 0x00000000, LENGTH = 0x00020000 /* 128k */

        STACK (w) : ORIGIN = 0x00020000, LENGTH = 16 /* top of RAM */

        ROM (w)   : ORIGIN = 0xfff40000, LENGTH = 0x000bffd0 /* 768k */

/* This is the largest RX6000: */

/*      ROM (w)   : ORIGIN = 0xffe00000, LENGTH = 0x001fffd0 */ /* 2Mb */

}

SECTIONS

{

  .text           :

  {

    PROVIDE (_start = .);

    *(.text P .stub .text.* .gnu.linkonce.t.*)

    KEEP (*(.text.*personality*))

    /* .gnu.warning sections are handled specially by elf32.em.  */

    *(.gnu.warning)

    *(.interp .hash .dynsym .dynstr .gnu.version*)

    PROVIDE (__etext = .);

    PROVIDE (_etext = .);

    PROVIDE (etext = .);

    . = ALIGN(4);

    KEEP (*(.init))

    KEEP (*(.fini))

  } > ROM

  .rodata : {

    . = ALIGN(4);

    *(.plt)

    *(.rodata C C_2 C_1 .rodata.* .gnu.linkonce.r.*)

    *(.rodata1)

    *(.eh_frame_hdr)

    KEEP (*(.eh_frame))

    KEEP (*(.gcc_except_table)) *(.gcc_except_table.*)

    . = ALIGN(4);

    PROVIDE(__romdatastart = .);

  } > ROM

  .data : {

    . = ALIGN(4);

    PROVIDE (__datastart = .); /* IF_ROROM */

    PROVIDE (__preinit_array_start = .);

    KEEP (*(.preinit_array))

    PROVIDE (__preinit_array_end = .);

    PROVIDE (__init_array_start = .);

    KEEP (*(SORT(.init_array.*)))

    KEEP (*(.init_array))

    PROVIDE (__init_array_end = .);

    PROVIDE (__fini_array_start = .);

    KEEP (*(.fini_array))

    KEEP (*(SORT(.fini_array.*)))

    PROVIDE (__fini_array_end = .);

    LONG(0); /* Sentinel.  */

    /* 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))

    /* We don't want to include the .ctor section from from the

       crtend.o file until after the sorted ctors.  The .ctor section

       from the crtend file contains the end of ctors marker and it

       must be last */

    KEEP (*(EXCLUDE_FILE (*crtend*.o ) .ctors))

    KEEP (*(SORT(.ctors.*)))

    KEEP (*(.ctors))

    KEEP (*crtbegin*.o(.dtors))

    KEEP (*(EXCLUDE_FILE (*crtend*.o ) .dtors))

    KEEP (*(SORT(.dtors.*)))

    KEEP (*(.dtors))

    KEEP (*(.jcr))

    *(.data.rel.ro.local) *(.data.rel.ro*)

    *(.dynamic)

    *(.data D .data.* .gnu.linkonce.d.*)

    KEEP (*(.gnu.linkonce.d.*personality*))

    SORT(CONSTRUCTORS)

    *(.data1)

    *(.got.plt) *(.got)

    /* We want the small data sections together, so single-instruction offsets

       can access them all, and initialized data all before uninitialized, so

       we can shorten the on-disk segment size.  */

    . = ALIGN(4);

    *(.sdata .sdata.* .gnu.linkonce.s.* D_2 D_1)

    . = ALIGN(4);

    _edata = .;

    PROVIDE (edata = .);

    PROVIDE (__dataend = .);

  } > RAM AT> ROM

  /* Note that __romdatacopysize may be ZERO for the simulator, which

     knows how to intialize RAM directly.  It should ONLY be used for

     copying data from ROM to RAM; if you need to know the size of the

     data section, subtract the end symbol from the start symbol.  */

  /* Note that crt0 assumes this is a multiple of four; all the

     start/stop symbols are also assumed long-aligned.  */

  PROVIDE (__romdatacopysize = SIZEOF(.data));

  .bss : {

    . = ALIGN(4);

    PROVIDE (__bssstart = .);

    *(.dynbss)

    *(.sbss .sbss.*)

    *(.bss B B_2 B_1 .bss.* .gnu.linkonce.b.*)

    . = ALIGN(4);

    *(COMMON)

    . = ALIGN(4);

    PROVIDE (__bssend = .);

    _end = .;

    PROVIDE (end = .);

  } > RAM

  PROVIDE (__bsssize = SIZEOF(.bss) / 4);

  .stack (ORIGIN (STACK)) :

  {

    PROVIDE (__stack = .);

    *(.stack)

  }

  /* Providing one of these symbols in your code is sufficient to have

     it linked in to the fixed vector table.  */

  PROVIDE (__rx_priviledged_exception_handler = 0x00000000);

  PROVIDE (__rx_access_exception_handler = 0x00000000);

  PROVIDE (__rx_undefined_exception_handler = 0x00000000);

  PROVIDE (__rx_floating_exception_handler = 0x00000000);

  PROVIDE (__rx_nonmaskable_exception_handler = 0x00000000);

  .vectors (0xFFFFFFD0) :

  {

    PROVIDE (__vectors = .);

    LONG (__rx_priviledged_exception_handler);

    LONG (__rx_access_exception_handler);

    LONG (0);

    LONG (__rx_undefined_exception_handler);

    LONG (0);

    LONG (__rx_floating_exception_handler);

    LONG (0);

    LONG (0);

    LONG (0);

    LONG (0);

    LONG (__rx_nonmaskable_exception_handler);

    LONG (_start);

  }

  /* The rest are all not normally part of the runtime image.  */

  /* 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 .gnu.linkonce.wi.*) }

  .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) }

  /DISCARD/ : { *(.note.GNU-stack) }

}