xref: /freebsd-10.0-release/sys/contrib/octeon-sdk/cvmx-shared-linux-o32.ld

/***********************license start***************
 * Copyright (c) 2003-2010  Cavium Inc. (support@cavium.com). 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.

 *   * Neither the name of Cavium Inc. nor the names of
 *     its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written
 *     permission.  

 * This Software, including technical data, may be subject to U.S. export  control
 * laws, including the U.S. Export Administration Act and its  associated
 * regulations, and may be subject to export or import  regulations in other
 * countries. 

 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" 
 * AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
 * WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
 * THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
 * DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
 * SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
 * MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
 * VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
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 * PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
 ***********************license end**************************************/






/*
 * This was created from a template supplied by GNU binutils.
 * Copyright (C) 2004 Cavium Inc.
 */

/**
 * @file
 * This linker script for use in building simple executive application to run
 * under Linux in userspace. The important difference from a standard Linux
 * binary is the addition of the ".cvmx_shared" memory section. This script
 * adds two symbols __cvmx_shared_start and __cvmx_sahred_end before and after
 * the CVMX_SHARED data. These are used by cvmx-app-init-linux.c to create a
 * shared region across all application processes.
 *
 * The original template for this files was:
 * ${OCTEON_ROOT}/tools/mips64-octeon-linux-gnu/lib/ldscripts/elf32btsmip.x
 */
OUTPUT_FORMAT("elf32-tradbigmips", "elf32-tradbigmips",
	      "elf32-tradlittlemips")
OUTPUT_ARCH(mips)
ENTRY(__start)
SEARCH_DIR("${OCTEON_ROOT}/tools/mips64-octeon-linux-gnu/lib");
/* Do we need any of these for elf?
   __DYNAMIC = 0;    */
SECTIONS
{
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  .rel.plt        : { *(.rel.plt) }
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  .init           :
  {
    KEEP (*(.init))
  } =0
  .plt            : { *(.plt) }
  .text           :
  {
    _ftext = . ;
    *(.text .stub .text.* .gnu.linkonce.t.*)
    /* .gnu.warning sections are handled specially by elf32.em.  */
    *(.gnu.warning)
    *(.mips16.fn.*) *(.mips16.call.*)
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  {
    KEEP (*(.fini))
  } =0
  PROVIDE (__etext = .);
  PROVIDE (_etext = .);
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  /* Adjust the address for the data segment.  We want to adjust up to
     the same address within the page on the next page up.  */
  . = 0x10000000;
  /* Ensure the __preinit_array_start label is properly aligned.  We
     could instead move the label definition inside the section, but
     the linker would then create the section even if it turns out to
     be empty, which isn't pretty.  */
  . = ALIGN(32 / 8);
  PROVIDE (__preinit_array_start = .);
  .preinit_array     : { *(.preinit_array) }
  PROVIDE (__preinit_array_end = .);
  PROVIDE (__init_array_start = .);
  .init_array     : { *(.init_array) }
  PROVIDE (__init_array_end = .);
  PROVIDE (__fini_array_start = .);
  .fini_array     : { *(.fini_array) }
  PROVIDE (__fini_array_end = .);
  .data           :
  {
    _fdata = . ;
    *(.data .data.* .gnu.linkonce.d.*)
    SORT(CONSTRUCTORS)
  }
  .data1          : { *(.data1) }
  .tdata	  : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
  .tbss		  : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
  .eh_frame       : { KEEP (*(.eh_frame)) }
  .gcc_except_table   : { *(.gcc_except_table) }
  .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))
    /* 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))
  }
  .dtors          :
  {
    KEEP (*crtbegin*.o(.dtors))
    KEEP (*(EXCLUDE_FILE (*crtend*.o ) .dtors))
    KEEP (*(SORT(.dtors.*)))
    KEEP (*(.dtors))
  }
  .jcr            : { KEEP (*(.jcr)) }
  _gp = ALIGN(16) + 0x7ff0;
  .got            : { *(.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.  */
  .sdata          :
  {
    *(.sdata .sdata.* .gnu.linkonce.s.*)
  }
  .lit8           : { *(.lit8) }
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  . = ALIGN (0x10000);
  __cvmx_shared_start = .;
  .cvmx_shared : {*(.cvmx_shared .cvmx_shared.linkonce.*)}
  .cvmx_shared_bss : {*(.cvmx_shared_bss .cvmx_shared_bss.linkonce.*)}
  . = ALIGN (0x10000);
  __cvmx_shared_end = .;

  _edata = .;
  PROVIDE (edata = .);
  __bss_start = .;
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  .sbss           :
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    PROVIDE (__sbss_start = .);
    PROVIDE (___sbss_start = .);
    *(.dynsbss)
    *(.sbss .sbss.* .gnu.linkonce.sb.*)
    *(.scommon)
    PROVIDE (__sbss_end = .);
    PROVIDE (___sbss_end = .);
  }
  .bss            :
  {
   *(.dynbss)
   *(.bss .bss.* .gnu.linkonce.b.*)
   *(COMMON)
   /* Align here to ensure that the .bss section occupies space up to
      _end.  Align after .bss to ensure correct alignment even if the
      .bss section disappears because there are no input sections.  */
   . = ALIGN(32 / 8);
  }
  . = ALIGN(32 / 8);
  . = ALIGN(32M);    /* RBF added alignment of data */
  .cvmx_shared : { *(.cvmx_shared) }
  _end = .;
  PROVIDE (end = .);
  /* 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) }
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  /* 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 */
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  /* GNU DWARF 1 extensions */
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  /* DWARF 1.1 and DWARF 2 */
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  /* DWARF 2 */
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  /* SGI/MIPS DWARF 2 extensions */
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  .gptab.sbss : { *(.gptab.bss) *(.gptab.sbss) }
  /DISCARD/ : { *(.note.GNU-stack) }
}