Subversion Repositories openrisc

/* Linker script for 68HC12 executable (PROM).  */

ENTRY(_start)

OUTPUT_FORMAT("elf32-m68hc12", "elf32-m68hc12", "elf32-m68hc12")

OUTPUT_ARCH(m68hc12)

GROUP(-lc -lbcc -lgcc)

SEARCH_DIR(.);

/* Fixed definition of the available memory banks.

   See generic emulation script for a user defined configuration.  */

/* The memory layout below is suitable for gcc validation.

   It takes care of big programs allowing up to 48128 bytes

   of text while allowing some programs that consume some

   memory (comp-goto-1 requires the RAM to be set to 0x4400

   to avoid head<->stack collision in malloc/sbrk).  */

MEMORY

{

  page0 (rwx) : ORIGIN = 0x00, LENGTH = 256

  text  (rx)  : ORIGIN = 0x04400, LENGTH = 0x10000 - 0x4400

  data        : ORIGIN = 0x01100, LENGTH = 0x2000 - 0x1100

}

/* Setup the stack on the top of the data memory bank.  */

PROVIDE (_stack = 0x04400 - 1);

SECTIONS

{

  .hash          : { *(.hash)           }

  .dynsym        : { *(.dynsym)         }

  .dynstr        : { *(.dynstr)         }

  .gnu.version            : { *(.gnu.version) }

  .gnu.version_d          : { *(.gnu.version_d) }

  .gnu.version_r          : { *(.gnu.version_r) }

  .rel.text      :

    {

      *(.rel.text)

      *(.rel.text.*)

      *(.rel.gnu.linkonce.t.*)

    }

  .rela.text     :

    {

      *(.rela.text)

      *(.rela.text.*)

      *(.rela.gnu.linkonce.t.*)

    }

  .rel.data      :

    {

      *(.rel.data)

      *(.rel.data.*)

      *(.rel.gnu.linkonce.d.*)

    }

  .rela.data     :

    {

      *(.rela.data)

      *(.rela.data.*)

      *(.rela.gnu.linkonce.d.*)

    }

  .rel.rodata    :

    {

      *(.rel.rodata)

      *(.rel.rodata.*)

      *(.rel.gnu.linkonce.r.*)

    }

  .rela.rodata   :

    {

      *(.rela.rodata)

      *(.rela.rodata.*)

      *(.rela.gnu.linkonce.r.*)

    }

  .rel.sdata     :

    {

      *(.rel.sdata)

      *(.rel.sdata.*)

      *(.rel.gnu.linkonce.s.*)

    }

  .rela.sdata     :

    {

      *(.rela.sdata)

      *(.rela.sdata.*)

      *(.rela.gnu.linkonce.s.*)

    }

  .rel.sbss      :

    {

      *(.rel.sbss)

      *(.rel.sbss.*)

      *(.rel.gnu.linkonce.sb.*)

    }

  .rela.sbss     :

    {

      *(.rela.sbss)

      *(.rela.sbss.*)

      *(.rel.gnu.linkonce.sb.*)

    }

  .rel.bss       :

    {

      *(.rel.bss)

      *(.rel.bss.*)

      *(.rel.gnu.linkonce.b.*)

    }

  .rela.bss      :

    {

      *(.rela.bss)

      *(.rela.bss.*)

      *(.rela.gnu.linkonce.b.*)

    }

  .rela.stext             : { *(.rela.stest) }

  .rela.etext             : { *(.rela.etest) }

  .rela.sdata             : { *(.rela.sdata) }

  .rela.edata             : { *(.rela.edata) }

  .rela.eit_v             : { *(.rela.eit_v) }

  .rela.ebss              : { *(.rela.ebss) }

  .rela.srodata           : { *(.rela.srodata) }

  .rela.erodata           : { *(.rela.erodata) }

  .rela.got               : { *(.rela.got) }

  .rela.ctors             : { *(.rela.ctors) }

  .rela.dtors             : { *(.rela.dtors) }

  .rela.init              : { *(.rela.init) }

  .rela.fini              : { *(.rela.fini) }

  .rela.plt               : { *(.rela.plt) }

  .rel.stext              : { *(.rel.stest) }

  .rel.etext              : { *(.rel.etest) }

  .rel.sdata              : { *(.rel.sdata) }

  .rel.edata              : { *(.rel.edata) }

  .rel.ebss               : { *(.rel.ebss) }

  .rel.eit_v              : { *(.rel.eit_v) }

  .rel.srodata            : { *(.rel.srodata) }

  .rel.erodata            : { *(.rel.erodata) }

  .rel.got                : { *(.rel.got) }

  .rel.ctors              : { *(.rel.ctors) }

  .rel.dtors              : { *(.rel.dtors) }

  .rel.init               : { *(.rel.init) }

  .rel.fini               : { *(.rel.fini) }

  .rel.plt                : { *(.rel.plt) }

  /* Concatenate .page0 sections.  Put them in the page0 memory bank

     unless we are creating a relocatable file.  */

  .page0 :

  {

    *(.page0)

  }  > page0

  /* Start of text section.  */

  .stext   :

  {

    *(.stext)

  }  > text

  .init   :

  {

    *(.init)

  } =0

  /* Put trampolines at beginning of text at 0x4400 so that they

     are not in memory bank window.  */

  .tramp :

  {

    *(.tramp)

  } > text

  .text  :

  {

    /* Put startup code at beginning so that _start keeps same address.  */

    /* Startup code.  */

    KEEP (*(.install0)) /* Section should setup the stack pointer.  */

    KEEP (*(.install1)) /* Place holder for applications.  */

    KEEP (*(.install2)) /* Optional installation of data sections in RAM.  */

    KEEP (*(.install3)) /* Place holder for applications.  */

    KEEP (*(.install4)) /* Section that calls the main.  */

    *(.init)

    *(.text)

    *(.text.*)

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

    *(.gnu.warning)

    *(.gnu.linkonce.t.*)

    /* Finish code.  */

    KEEP (*(.fini0))    /* Beginning of finish code (_exit symbol).  */

    KEEP (*(.fini1))    /* Place holder for applications.  */

    KEEP (*(.fini2))    /* C++ destructors.  */

    KEEP (*(.fini3))    /* Place holder for applications.  */

    KEEP (*(.fini4))    /* Runtime exit.  */

    _etext = .;

    PROVIDE (etext = .);

  }  > text

  .eh_frame   :

  {

    *(.eh_frame)

  }  > text

  .gcc_except_table :

  {

    *(.gcc_except_table)

  } > text

  .rodata    :

  {

    *(.rodata)

    *(.rodata.*)

    *(.gnu.linkonce.r*)

  }  > text

  .rodata1   :

  {

    *(.rodata1)

  }  > text

  /* Constructor and destructor tables are in ROM.  */

  .ctors   :

  {

     PROVIDE (__CTOR_LIST__ = .);

     KEEP (*(.ctors))

     PROVIDE(__CTOR_END__ = .);

  }  > text

    .dtors        :

  {

     PROVIDE(__DTOR_LIST__ = .);

     KEEP (*(.dtors))

     PROVIDE(__DTOR_END__ = .);

  }  > text

  /* Start of the data section image in ROM.  */

  __data_image = .;

  PROVIDE (__data_image = .);

  /* All read-only sections that normally go in PROM must be above.

     We construct the DATA image section in PROM at end of all these

     read-only sections.  The data image must be copied at init time.

     Refer to GNU ld, Section 3.6.8.2 Output Section LMA.  */

  .data    : AT (__data_image)

  {

    __data_section_start = .;

    PROVIDE (__data_section_start = .);

    *(.sdata)

    *(.data)

    *(.data.*)

    *(.data1)

    *(.gnu.linkonce.d.*)

    CONSTRUCTORS

    _edata  =  .;

    PROVIDE (edata = .);

  }  > data

  __data_section_size = SIZEOF(.data);

  PROVIDE (__data_section_size = SIZEOF(.data));

  __data_image_end = __data_image + __data_section_size;

/* SCz: this does not work yet... This is supposed to force the loading

   of _map_data.o (from libgcc.a) when the .data section is not empty.

   By doing so, this should bring the code that copies the .data section

   from ROM to RAM at init time.

  ___pre_comp_data_size = SIZEOF(.data);

  __install_data_sections = ___pre_comp_data_size > 0 ?

                __map_data_sections : 0;

*/

  /* .install  :

  {

    . = _data_image_end;

  }  > text */

  /* Relocation for some bss and data sections.  */

  .bss   :

  {

    __bss_start = .;

    *(.softregs)

    *(.sbss)

    *(.scommon)

    *(.dynbss)

    *(.bss)

    *(.bss.*)

    *(.gnu.linkonce.b.*)

    *(COMMON)

    PROVIDE (_end = .);

  }  > data

  __bss_size = SIZEOF(.bss);

  PROVIDE (__bss_size = SIZEOF(.bss));

  /* If the 'vectors_addr' symbol is defined, it indicates the start address

     of interrupt vectors.  This depends on the 68HC11 operating mode:

                        Addr

     Single chip        0xffc0

     Extended mode      0xffc0

     Bootstrap          0x00c0

     Test               0xbfc0

     In general, the vectors address is 0xffc0.  This can be overriden

     with the '-defsym vectors_addr=0xbfc0' ld option.

     Note: for the bootstrap mode, the interrupt vectors are at 0xbfc0 but

     they are redirected to 0x00c0 by the internal PROM.  Application's vectors

     must also consist of jump instructions (see Motorola's manual).  */

  PROVIDE (_vectors_addr = DEFINED (vectors_addr) ? vectors_addr : 0xffc0);

  .vectors DEFINED (vectors_addr) ? vectors_addr : 0xffc0 :

  {

    KEEP (*(.vectors))

  }

  /* 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.

     Treatment of DWARF debug section must be at end of the linker

     script to avoid problems when there are undefined symbols. It's necessary

     to avoid that the DWARF section is relocated before such undefined

     symbols are found.  */

  /* 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) }

  .debug_ranges   0 : { *(.debug_ranges) }

}