The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/conf/ldscript.mips.cfe

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    1 /*-
    2  * Copyright (c) 2001, 2004, 2008, Juniper Networks, Inc.
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. Neither the name of the Juniper Networks, Inc. nor the names of its
   14  *    contributors may be used to endorse or promote products derived from
   15  *    this software without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY JUNIPER NETWORKS AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED. IN NO EVENT SHALL JUNIPER NETWORKS OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  *      JNPR: ldscript.mips,v 1.3 2006/10/11 06:12:04
   30  * $FreeBSD: releng/10.2/sys/conf/ldscript.mips.cfe 217655 2011-01-20 19:20:23Z imp $
   31  */
   32 
   33 /*
   34  * This linker script is needed to build a kernel for use by Broadcom CFE
   35  * when loaded over TFTP; its ELF loader does not support backwards seek
   36  * on network I/O streams.
   37  * Furthermore, CFE will only load PT_LOAD segments, therefore the dynamic
   38  * sections must be placed in their own segment.
   39  */
   40 
   41 ENTRY(_start)
   42 SEARCH_DIR(/usr/lib);
   43 
   44 PHDRS
   45 {
   46  headers PT_PHDR FILEHDR PHDRS ;
   47  interp PT_INTERP ;
   48  text PT_LOAD ;
   49  dynamic PT_LOAD ;
   50  data PT_LOAD ;
   51 }
   52 
   53 SECTIONS
   54 {
   55   /* Read-only sections, merged into text segment: */
   56   . = KERNLOADADDR ;
   57   .interp     : { *(.interp)    } :interp
   58   .hash          : { *(.hash)           } :text
   59   .dynsym        : { *(.dynsym)         }
   60   .dynstr        : { *(.dynstr)         }
   61   .gnu.version   : { *(.gnu.version)    }
   62   .gnu.version_d   : { *(.gnu.version_d)        }
   63   .gnu.version_r   : { *(.gnu.version_r)        }
   64   .rel.init      : { *(.rel.init)       }
   65   .rela.init     : { *(.rela.init)      }
   66   .rel.text      :
   67     {
   68       *(.rel.text)
   69       *(.rel.text.*)
   70       *(.rel.gnu.linkonce.t.*)
   71     }
   72   .rela.text     :
   73     {
   74       *(.rela.text)
   75       *(.rela.text.*)
   76       *(.rela.gnu.linkonce.t.*)
   77     }
   78   .rel.fini      : { *(.rel.fini)       }
   79   .rela.fini     : { *(.rela.fini)      }
   80   .rel.rodata    :
   81     {
   82       *(.rel.rodata)
   83       *(.rel.rodata.*)
   84       *(.rel.gnu.linkonce.r.*)
   85     }
   86   .rela.rodata   :
   87     {
   88       *(.rela.rodata)
   89       *(.rela.rodata.*)
   90       *(.rela.gnu.linkonce.r.*)
   91     }
   92   .rel.data      :
   93     {
   94       *(.rel.data)
   95       *(.rel.data.*)
   96       *(.rel.gnu.linkonce.d.*)
   97     }
   98   .rela.data     :
   99     {
  100       *(.rela.data)
  101       *(.rela.data.*)
  102       *(.rela.gnu.linkonce.d.*)
  103     }
  104   .rel.ctors     : { *(.rel.ctors)      }
  105   .rela.ctors    : { *(.rela.ctors)     }
  106   .rel.dtors     : { *(.rel.dtors)      }
  107   .rela.dtors    : { *(.rela.dtors)     }
  108   .rel.got       : { *(.rel.got)                }
  109   .rela.got      : { *(.rela.got)               }
  110   .rel.sdata     :
  111     {
  112       *(.rel.sdata)
  113       *(.rel.sdata.*)
  114       *(.rel.gnu.linkonce.s.*)
  115     }
  116   .rela.sdata     :
  117     {
  118       *(.rela.sdata)
  119       *(.rela.sdata.*)
  120       *(.rela.gnu.linkonce.s.*)
  121     }
  122   .rel.sbss      :
  123     { 
  124       *(.rel.sbss)
  125       *(.rel.sbss.*)
  126       *(.rel.gnu.linkonce.sb.*)
  127     }
  128   .rela.sbss     :
  129     {
  130       *(.rela.sbss)
  131       *(.rela.sbss.*)
  132       *(.rel.gnu.linkonce.sb.*)
  133     }
  134   .rel.sdata2    : 
  135     { 
  136       *(.rel.sdata2)
  137       *(.rel.sdata2.*)
  138       *(.rel.gnu.linkonce.s2.*)
  139     }
  140   .rela.sdata2   : 
  141     {
  142       *(.rela.sdata2)
  143       *(.rela.sdata2.*)
  144       *(.rela.gnu.linkonce.s2.*)
  145     }
  146   .rel.sbss2     : 
  147     { 
  148       *(.rel.sbss2)     
  149       *(.rel.sbss2.*)
  150       *(.rel.gnu.linkonce.sb2.*)
  151     }
  152   .rela.sbss2    : 
  153     { 
  154       *(.rela.sbss2)    
  155       *(.rela.sbss2.*)
  156       *(.rela.gnu.linkonce.sb2.*)
  157     }
  158   .rel.bss       : 
  159     { 
  160       *(.rel.bss)
  161       *(.rel.bss.*)
  162       *(.rel.gnu.linkonce.b.*)
  163     }
  164   .rela.bss      : 
  165     { 
  166       *(.rela.bss)
  167       *(.rela.bss.*)
  168       *(.rela.gnu.linkonce.b.*)
  169     }
  170   .rel.plt       : { *(.rel.plt)                }
  171   .rela.plt      : { *(.rela.plt)               }
  172   .init          : 
  173   { 
  174     KEEP (*(.init))
  175   } :text =0x1000000
  176   .text      :
  177   {
  178     *(.trap)
  179     *(.text)
  180     *(.text.*)
  181     *(.stub)
  182     /* .gnu.warning sections are handled specially by elf32.em.  */
  183     *(.gnu.warning)
  184     *(.gnu.linkonce.t.*)
  185   } =0x1000000
  186   .fini      :
  187   {
  188     KEEP (*(.fini))
  189   } =0x1000000
  190   PROVIDE (__etext = .);
  191   PROVIDE (_etext = .);
  192   PROVIDE (etext = .);
  193   .rodata   : { *(.rodata) *(.rodata.*) *(.gnu.linkonce.r.*) }
  194   .rodata1   : { *(.rodata1) }
  195   .reginfo : { *(.reginfo) }
  196   .sdata2   : { *(.sdata2) *(.sdata2.*) *(.gnu.linkonce.s2.*) }
  197   .sbss2   : { *(.sbss2) *(.sbss2.*) *(.gnu.linkonce.sb2.*) }
  198   . = ALIGN(0x2000) + (. & (0x2000 - 1));
  199   .data    :
  200   {
  201     *(.data)
  202     *(.data.*)
  203     *(.gnu.linkonce.d.*)
  204     SORT(CONSTRUCTORS)
  205   } :data
  206   .data1   : { *(.data1) }
  207   .eh_frame : { KEEP (*(.eh_frame)) }
  208   .gcc_except_table : { *(.gcc_except_table) }
  209   .ctors   : 
  210   {
  211     /* gcc uses crtbegin.o to find the start of
  212        the constructors, so we make sure it is
  213        first.  Because this is a wildcard, it
  214        doesn't matter if the user does not
  215        actually link against crtbegin.o; the
  216        linker won't look for a file to match a
  217        wildcard.  The wildcard also means that it
  218        doesn't matter which directory crtbegin.o
  219        is in.  */
  220     KEEP (*crtbegin.o(.ctors))
  221     /* We don't want to include the .ctor section from
  222        from the crtend.o file until after the sorted ctors.
  223        The .ctor section from the crtend file contains the
  224        end of ctors marker and it must be last */
  225     KEEP (*(EXCLUDE_FILE (*crtend.o ) .ctors))
  226     KEEP (*(SORT(.ctors.*)))
  227     KEEP (*(.ctors))
  228   }
  229    .dtors         :
  230   {
  231     KEEP (*crtbegin.o(.dtors))
  232     KEEP (*(EXCLUDE_FILE (*crtend.o ) .dtors))
  233     KEEP (*(SORT(.dtors.*)))
  234     KEEP (*(.dtors))
  235   }
  236   .plt      : { *(.plt) }
  237   _gp = ALIGN(16) + 0x7ff0;
  238   .got            : { *(.got.plt) *(.got) }
  239   .dynamic       : { *(.dynamic) } :dynamic
  240   /* We want the small data sections together, so single-instruction offsets
  241      can access them all, and initialized data all before uninitialized, so
  242      we can shorten the on-disk segment size.  */
  243   .sdata     : 
  244   {
  245     *(.sdata) 
  246     *(.sdata.*)
  247     *(.gnu.linkonce.s.*)
  248   }
  249   _edata = .;
  250   PROVIDE (edata = .);
  251   __bss_start = .;
  252   .sbss      :
  253   {
  254     PROVIDE (__sbss_start = .);
  255     PROVIDE (___sbss_start = .);
  256     *(.dynsbss)
  257     *(.sbss)
  258     *(.sbss.*)
  259     *(.gnu.linkonce.sb.*)
  260     *(.scommon)
  261     PROVIDE (__sbss_end = .);
  262     PROVIDE (___sbss_end = .);
  263   }
  264   .bss       :
  265   {
  266    *(.dynbss)
  267    *(.bss)
  268    *(.bss.*)
  269    *(.gnu.linkonce.b.*)
  270    *(COMMON)
  271    /* Align here to ensure that the .bss section occupies space up to
  272       _end.  Align after .bss to ensure correct alignment even if the
  273       .bss section disappears because there are no input sections.  */
  274    . = ALIGN(64 / 8);
  275   }
  276   . = ALIGN(64 / 8);
  277   _end = .;
  278   PROVIDE (end = .);
  279   /* Stabs debugging sections.  */
  280   .stab 0 : { *(.stab) }
  281   .stabstr 0 : { *(.stabstr) }
  282   .stab.excl 0 : { *(.stab.excl) }
  283   .stab.exclstr 0 : { *(.stab.exclstr) }
  284   .stab.index 0 : { *(.stab.index) }
  285   .stab.indexstr 0 : { *(.stab.indexstr) }
  286   .comment 0 : { *(.comment) }
  287   /* DWARF debug sections.
  288      Symbols in the DWARF debugging sections are relative to the beginning
  289      of the section so we begin them at 0.  */
  290   /* DWARF 1 */
  291   .debug          0 : { *(.debug) }
  292   .line           0 : { *(.line) }
  293   /* GNU DWARF 1 extensions */
  294   .debug_srcinfo  0 : { *(.debug_srcinfo) }
  295   .debug_sfnames  0 : { *(.debug_sfnames) }
  296   /* DWARF 1.1 and DWARF 2 */
  297   .debug_aranges  0 : { *(.debug_aranges) }
  298   .debug_pubnames 0 : { *(.debug_pubnames) }
  299   /* DWARF 2 */
  300   .debug_info     0 : { *(.debug_info) *(.gnu.linkonce.wi.*) }
  301   .debug_abbrev   0 : { *(.debug_abbrev) }
  302   .debug_line     0 : { *(.debug_line) }
  303   .debug_frame    0 : { *(.debug_frame) }
  304   .debug_str      0 : { *(.debug_str) }
  305   .debug_loc      0 : { *(.debug_loc) }
  306   .debug_macinfo  0 : { *(.debug_macinfo) }
  307   /* SGI/MIPS DWARF 2 extensions */
  308   .debug_weaknames 0 : { *(.debug_weaknames) }
  309   .debug_funcnames 0 : { *(.debug_funcnames) }
  310   .debug_typenames 0 : { *(.debug_typenames) }
  311   .debug_varnames  0 : { *(.debug_varnames) }
  312   /* These must appear regardless of  .  */
  313 }

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