mips_mips32.ld

eCos操作系统源码

//===========================================================================
//
// MLT linker script for MIPS32
//
//===========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//===========================================================================

#include <pkgconf/system.h>

OUTPUT_FORMAT("elf32-bigmips", "elf32-bigmips",
              "elf32-littlemips")
/* The preprocessor defines mips, but we know we're mips :-) */
#undef mips
OUTPUT_ARCH(mips:isa32)

STARTUP(vectors.o)
ENTRY(reset_vector)
#ifdef EXTRAS
INPUT(extras.o)
#endif
#if (__GNUC__ >= 3)
GROUP(libtarget.a libgcc.a libsupc++.a)
#else
GROUP(libtarget.a libgcc.a)
#endif

/* FIXME: The MLT should pass in the required alignment since it must be
 * the same as the VMA's alignment. As a result of this bug, all the MIPS32
 * ROM mlt files have alignment 8, when some should have alignment 4
 * (902557-CR)
 */
#define ALIGN_LMA 0x40
#define FOLLOWING(_section_) AT ((LOADADDR (_section_) + SIZEOF (_section_) + ALIGN_LMA - 1) & ~ (ALIGN_LMA - 1))
#define LMA_EQ_VMA
#define FORCE_OUTPUT . = .

#define SECTIONS_BEGIN

#if defined(CYG_HAL_STARTUP_RAM)

/* this version for RAM startup */
#define SECTION_rom_vectors(_region_, _vma_, _lma_) \
    .rom_vectors _vma_ : _lma_ \
    { KEEP (*(.utlb_vector)) \
    . = ALIGN(0x80); KEEP(*(.other_vector)) \
        /* debug and reset vector not used in RAM version */ \
        KEEP(*(.debug_vector)) \
        KEEP (*(.reset_vector)) } \
    > _region_

#elif defined(CYG_HAL_STARTUP_ROM)

/* this version for ROM startup */
#define SECTION_rom_vectors(_region_, _vma_, _lma_) \
    .rom_vectors _vma_ : _lma_ \
    { KEEP (*(.reset_vector)) \
    . = ALIGN(0x200); KEEP (*(.utlb_vector)) \
    . = . + 0x100; \
    . = ALIGN(0x80); KEEP(*(.other_vector)) \
    . = . + 0x80; \
    . = ALIGN(0x80); KEEP(*(.debug_vector)) } \
    > _region_

#endif /* ROM startup version of ROM vectors */

#define SECTION_ROMISC(_region_, _vma_, _lma_)                                 \
  .interp _vma_  : _lma_ { *(.interp)                            } > _region_  \
  .hash          : FOLLOWING(.interp)        { *(.hash)          } > _region_  \
  .dynsym        : FOLLOWING(.hash)          { *(.dynsym)        } > _region_  \
  .dynstr        : FOLLOWING(.dynsym)        { *(.dynstr)        } > _region_  \
  .gnu.version   : FOLLOWING(.dynstr)        { *(.gnu.version)   } > _region_  \
  .gnu.version_d : FOLLOWING(.gnu.version)   { *(.gnu.version_d) } > _region_  \
  .gnu.version_r : FOLLOWING(.gnu.version_d) { *(.gnu.version_r) } > _region_  \
  .plt           : FOLLOWING(.gnu.version_r) { *(.plt)           } > _region_

#define SECTION_RELOCS(_region_, _vma_, _lma_)                              \
  .rel.text      :                                                          \
    {                                                                       \
      *(.rel.text)                                                          \
      *(.rel.text.*)                                                        \
      *(.rel.gnu.linkonce.t*)                                               \
    } > _region_                                                            \
  .rela.text     :                                                          \
    {                                                                       \
      *(.rela.text)                                                         \
      *(.rela.text.*)                                                       \
      *(.rela.gnu.linkonce.t*)                                              \
    } > _region_                                                            \
  .rel.data      :                                                          \
    {                                                                       \
      *(.rel.data)                                                          \
      *(.rel.data.*)                                                        \
      *(.rel.gnu.linkonce.d*)                                               \
    } > _region_                                                            \
  .rela.data     :                                                          \
    {                                                                       \
      *(.rela.data)                                                         \
      *(.rela.data.*)                                                       \
      *(.rela.gnu.linkonce.d*)                                              \
    } > _region_                                                            \
  .rel.rodata    :                                                          \
    {                                                                       \
      *(.rel.rodata)                                                        \
      *(.rel.rodata.*)                                                      \
      *(.rel.gnu.linkonce.r*)                                               \
    } > _region_                                                            \
  .rela.rodata   :                                                          \
    {                                                                       \
      *(.rela.rodata)                                                       \
      *(.rela.rodata.*)                                                     \
      *(.rela.gnu.linkonce.r*)                                              \
    } > _region_                                                            \
  .rel.got       :   { *(.rel.got)    } > _region_                          \
  .rela.got      :   { *(.rela.got)   } > _region_                          \
  .rel.ctors     :   { *(.rel.ctors)  } > _region_                          \
  .rela.ctors    :   { *(.rela.ctors) } > _region_                          \
  .rel.dtors     :   { *(.rel.dtors)  } > _region_                          \
  .rela.dtors    :   { *(.rela.dtors) } > _region_                          \
  .rel.init      :   { *(.rel.init)   } > _region_                          \
  .rela.init     :   { *(.rela.init)  } > _region_                          \
  .rel.fini      :   { *(.rel.fini)   } > _region_                          \
  .rela.fini     :   { *(.rela.fini)  } > _region_                          \
  .rel.bss       :   { *(.rel.bss)    } > _region_                          \
  .rela.bss      :   { *(.rela.bss)   } > _region_                          \
  .rel.plt       :   { *(.rel.plt)    } > _region_                          \
  .rela.plt      :   { *(.rela.plt)   } > _region_                          \
  .rel.dyn       :   { *(.rel.dyn)    } > _region_

#define SECTION_init(_region_, _vma_, _lma_)   \
  .init _vma_ : _lma_                          \
    {                                          \
      FORCE_OUTPUT; KEEP (*(.init))            \
    } > _region_ =0

#define SECTION_text(_region_, _vma_, _lma_)   \
  .text _vma_ : _lma_                          \
    {                                          \
      _stext = .; _ftext = . ;                 \
      *(.text)                                 \
      *(.text.*)                               \
      *(.stub)                                 \
      *(.gnu.warning)                          \
      *(.gnu.linkonce.t*)                      \
      *(.mips16.fn.*) *(.mips16.call.*)        \
    } > _region_ =0                            \
  _etext = .; PROVIDE (etext = .);

#define SECTION_fini(_region_, _vma_, _lma_)   \
  .fini _vma_ : _lma_                          \
    {                                          \
      FORCE_OUTPUT; KEEP (*(.fini))                   \
    } > _region_ =0

#define SECTION_rodata(_region_, _vma_, _lma_)        \
  .rodata _vma_ : _lma_                               \
    {                                                 \
      FORCE_OUTPUT; *(.rodata) *(.rodata.*) *(.gnu.linkonce.r*)    \
    } > _region_

#define SECTION_rodata1(_region_, _vma_, _lma_)       \
  .rodata1 _vma_ : _lma_                              \
    {                                                 \