powerpc.ld

来自「ecos为实时嵌入式操作系统」· LD 代码 · 共 139 行

/*==========================================================================
//
//	powerpc.ld
//
//	Linker script for PowerPC
//
//==========================================================================
//####COPYRIGHTBEGIN####
//
// -------------------------------------------
// The contents of this file are subject to the Cygnus eCos Public License
// Version 1.0 (the "License"); you may not use this file except in
// compliance with the License.  You may obtain a copy of the License at
// http://sourceware.cygnus.com/ecos
// 
// Software distributed under the License is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the
// License for the specific language governing rights and limitations under
// the License.
// 
// The Original Code is eCos - Embedded Cygnus Operating System, released
// September 30, 1998.
// 
// The Initial Developer of the Original Code is Cygnus.  Portions created
// by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions.  All Rights Reserved.
// -------------------------------------------
//
//####COPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): 	jskov
// Contributors:jskov
// Date:	1999-01-18
// Purpose:	PowerPC Linker script
//
//####DESCRIPTIONEND####
//
//========================================================================*/
STARTUP(vectors.o)
ENTRY(reset_vector)
#ifdef EXTRAS
INPUT(extras.o)
#endif
GROUP(libtarget.a libgcc.a)

#define ALIGN_LMA 8
#define FOLLOWING(_section_) AT ((LOADADDR (_section_) + SIZEOF (_section_) + ALIGN_LMA - 1) & ~ (ALIGN_LMA - 1))
#define LMA_EQ_VMA
#define FORCE_OUTPUT . = .


#define SECTIONS_BEGIN

#define SECTION_vectors(_region_, _vma_, _lma_)        \
  .vectors _vma_ : _lma_                                              \
  { FORCE_OUTPUT; KEEP(*(.vectors)) }         \
  > _region_

#define SECTION_text(_region_, _vma_, _lma_)           \
  .text _vma_ : _lma_                                                 \
  { _stext = .;       \
    *(.text*) *(.gnu.warning) *(.gnu.linkonce*) *(.init) }      \
  > _region_                                                    \
  _etext = .;  PROVIDE (etext = .);

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

#define SECTION_rodata1(_region_, _vma_, _lma_)        \
    .rodata1 _vma_ : _lma_                                            \
    { FORCE_OUTPUT; *(.rodata1) }             \
    > _region_

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

#define SECTION_fixup(_region_, _vma_, _lma_)                      \
    .fixup _vma_ : _lma_                                                          \
    { __FIXUP_START__ = ABSOLUTE(.); *(.fixup) __FIXUP_END__ = ABSOLUTE(.);}\
    > _region_

#define SECTION_gcc_except_table(_region_, _vma_, _lma_)       \
    .gcc_except_table _vma_ : _lma_                                           \
    { __EXCEPT_START__ = ABSOLUTE(.); *(.gcc_except_table)              \
      __EXCEPT_END__ = ABSOLUTE(.);}                                    \
    > _region_

#define SECTION_data(_region_, _vma_, _lma_)                         \
    .data _vma_ : _lma_                                                             \
    { __ram_data_start = ABSOLUTE(.); *(.data*)                                 \
    __GOT1_START__ = ABSOLUTE(.); *(.got1) __GOT1_END__ = ABSOLUTE(.);        \
      /* Put .ctors and .dtors next to the .got2 section, so that */          \
      /* the pointers get relocated with -mrelocatable.           */          \
     . = ALIGN(8); __CTOR_LIST__ = ABSOLUTE(.);                               \
      KEEP(*(SORT(.ctors*))) __CTOR_END__ = ABSOLUTE(.);                      \
    __DTOR_LIST__ = ABSOLUTE(.);                                              \
      KEEP(*(SORT(.dtors*))) __DTOR_END__ = ABSOLUTE(.);                      \
    . = ALIGN(8);                                                             \
    __DEVTAB__ = ABSOLUTE (.); KEEP (*(SORT (.devtab*))) __DEVTAB_END__ = ABSOLUTE (.); \
    __GOT2_START__ = ABSOLUTE(.); *(.got2) __GOT2_END__ = ABSOLUTE(.);        \
    __GOT_START = ABSOLUTE(.); _GLOBAL_OFFSET_TABLE_ = ABSOLUTE(. + 32768);   \
    _SDA_BASE_ = ABSOLUTE(.); *(.got.plt) *(.got)                             \
    __GOT_END__ = ABSOLUTE(.);  *(.dynamic)                                   \
      /* 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.      */   \
    __SDATA_START__ = ABSOLUTE(.); *(.sdata)                                  \
    __SDATA2_START__ = ABSOLUTE(.); *(.sdata2) }                              \
    > _region_                                                                \
    __rom_data_start = LOADADDR(.data);                                       \
    __ram_data_end = .; PROVIDE(__ram_data_end = .);                          \
    _edata = .; PROVIDE (edata = .);

#define SECTION_sbss(_region_, _vma_, _lma_)                     \
    .sbss _vma_ : _lma_                                                         \
    { __sbss_start = ABSOLUTE (.);                                        \
    __SBSS_START__ = ABSOLUTE(.); *(.sbss) __SBSS_END__ = ABSOLUTE(.);    \
    __SBSS2_START__ = ABSOLUTE(.); *(.sbss2) __SBSS2_END__ = ABSOLUTE(.); \
    *(.scommon)                                                           \
    __sbss_end = ABSOLUTE (.); }                                          \
    > _region_

#define SECTION_bss(_region_, _vma_, _lma_)                      \
    .bss _vma_ : _lma_                                                          \
    { __bss_start = ABSOLUTE (.);                       \
      FORCE_OUTPUT; *(.dynbss) *(.bss) *(COMMON)        \
      __bss_end = ABSOLUTE (.); }                       \
    > _region_

#define SECTIONS_END . = ALIGN(4); _end = .; PROVIDE (end = .);

#include <pkgconf/system.h>
#include CYGHWR_MEMORY_LAYOUT_LDI