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.i386

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    1 /* $FreeBSD: stable/11/sys/conf/ldscript.i386 317145 2017-04-19 15:33:24Z emaste $ */
    2 OUTPUT_FORMAT("elf32-i386-freebsd", "elf32-i386-freebsd", "elf32-i386-freebsd")
    3 OUTPUT_ARCH(i386)
    4 ENTRY(btext)
    5 SEARCH_DIR(/usr/lib);
    6 SECTIONS
    7 {
    8   /* Read-only sections, merged into text segment: */
    9   . = kernbase + kernload + SIZEOF_HEADERS;
   10   .interp         : { *(.interp) }
   11   .hash           : { *(.hash) }
   12   .gnu.hash       : { *(.gnu.hash) }
   13   .dynsym         : { *(.dynsym) }
   14   .dynstr         : { *(.dynstr) }
   15   .gnu.version    : { *(.gnu.version) }
   16   .gnu.version_d  : { *(.gnu.version_d) }
   17   .gnu.version_r  : { *(.gnu.version_r) }
   18   .rel.init       : { *(.rel.init) }
   19   .rela.init      : { *(.rela.init) }
   20   .rel.text       : { *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) }
   21   .rela.text      : { *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) }
   22   .rel.fini       : { *(.rel.fini) }
   23   .rela.fini      : { *(.rela.fini) }
   24   .rel.rodata     : { *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) }
   25   .rela.rodata    : { *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) }
   26   .rel.data.rel.ro   : { *(.rel.data.rel.ro* .rel.gnu.linkonce.d.rel.ro.*) }
   27   .rela.data.rel.ro   : { *(.rela.data.rel.ro* .rela.gnu.linkonce.d.rel.ro.*) }
   28   .rel.data       : { *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*) }
   29   .rela.data      : { *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) }
   30   .rel.tdata      : { *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*) }
   31   .rela.tdata     : { *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) }
   32   .rel.tbss       : { *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*) }
   33   .rela.tbss      : { *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) }
   34   .rel.ctors      : { *(.rel.ctors) }
   35   .rela.ctors     : { *(.rela.ctors) }
   36   .rel.dtors      : { *(.rel.dtors) }
   37   .rela.dtors     : { *(.rela.dtors) }
   38   .rel.got        : { *(.rel.got) }
   39   .rela.got       : { *(.rela.got) }
   40   .rel.bss        : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }
   41   .rela.bss       : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
   42   .rel.plt        : { *(.rel.plt) }
   43   .rela.plt       : { *(.rela.plt) }
   44   .init           :
   45   {
   46     KEEP (*(.init))
   47   } =0x90909090
   48   .plt            : { *(.plt) }
   49   .text           :
   50   {
   51     *(.text .stub .text.* .gnu.linkonce.t.*)
   52     KEEP (*(.text.*personality*))
   53     /* .gnu.warning sections are handled specially by elf32.em.  */
   54     *(.gnu.warning)
   55   } =0x90909090
   56   .fini           :
   57   {
   58     KEEP (*(.fini))
   59   } =0x90909090
   60   PROVIDE (__etext = .);
   61   PROVIDE (_etext = .);
   62   PROVIDE (etext = .);
   63   .rodata         : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
   64   .rodata1        : { *(.rodata1) }
   65   .eh_frame_hdr : { *(.eh_frame_hdr) }
   66   .eh_frame       : ONLY_IF_RO { KEEP (*(.eh_frame)) }
   67   .gcc_except_table   : ONLY_IF_RO { *(.gcc_except_table .gcc_except_table.*) }
   68   /* Adjust the address for the data segment.  We want to adjust up to
   69      the same address within the page on the next page up.  */
   70   . = ALIGN (CONSTANT (MAXPAGESIZE)) - ((CONSTANT (MAXPAGESIZE) - .) & (CONSTANT (MAXPAGESIZE) - 1)); . = DATA_SEGMENT_ALIGN (CONSTANT (MAXPAGESIZE), CONSTANT (COMMONPAGESIZE));
   71   /* Exception handling  */
   72   .eh_frame       : ONLY_IF_RW { KEEP (*(.eh_frame)) }
   73   .gcc_except_table   : ONLY_IF_RW { *(.gcc_except_table .gcc_except_table.*) }
   74   /* Thread Local Storage sections  */
   75   .tdata          : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
   76   .tbss           : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
   77   .preinit_array     :
   78   {
   79     PROVIDE_HIDDEN (__preinit_array_start = .);
   80     KEEP (*(.preinit_array))
   81     PROVIDE_HIDDEN (__preinit_array_end = .);
   82   }
   83   .init_array     :
   84   {
   85      PROVIDE_HIDDEN (__init_array_start = .);
   86      KEEP (*(SORT(.init_array.*)))
   87      KEEP (*(.init_array))
   88      PROVIDE_HIDDEN (__init_array_end = .);
   89   }
   90   .fini_array     :
   91   {
   92     PROVIDE_HIDDEN (__fini_array_start = .);
   93     KEEP (*(.fini_array))
   94     KEEP (*(SORT(.fini_array.*)))
   95     PROVIDE_HIDDEN (__fini_array_end = .);
   96   }
   97   _start_ctors = .;
   98   PROVIDE (start_ctors = .);
   99   .ctors          :
  100   {
  101     /* gcc uses crtbegin.o to find the start of
  102        the constructors, so we make sure it is
  103        first.  Because this is a wildcard, it
  104        doesn't matter if the user does not
  105        actually link against crtbegin.o; the
  106        linker won't look for a file to match a
  107        wildcard.  The wildcard also means that it
  108        doesn't matter which directory crtbegin.o
  109        is in.  */
  110     KEEP (*crtbegin.o(.ctors))
  111     KEEP (*crtbegin?.o(.ctors))
  112     /* We don't want to include the .ctor section from
  113        the crtend.o file until after the sorted ctors.
  114        The .ctor section from the crtend file contains the
  115        end of ctors marker and it must be last */
  116     KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
  117     KEEP (*(SORT(.ctors.*)))
  118     KEEP (*(.ctors))
  119   }
  120   _stop_ctors = .;
  121   PROVIDE (stop_ctors = .);
  122   .dtors          :
  123   {
  124     KEEP (*crtbegin.o(.dtors))
  125     KEEP (*crtbegin?.o(.dtors))
  126     KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
  127     KEEP (*(SORT(.dtors.*)))
  128     KEEP (*(.dtors))
  129   }
  130   .jcr            : { KEEP (*(.jcr)) }
  131   .data.rel.ro : { *(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*) *(.data.rel.ro* .gnu.linkonce.d.rel.ro.*) }
  132   .dynamic        : { *(.dynamic) }
  133   .got            : { *(.got) }
  134   . = DATA_SEGMENT_RELRO_END (12, .);
  135   .got.plt        : { *(.got.plt) }
  136   .data           :
  137   {
  138     *(.data .data.* .gnu.linkonce.d.*)
  139     KEEP (*(.gnu.linkonce.d.*personality*))
  140   }
  141   .data1          : { *(.data1) }
  142   _edata = .; PROVIDE (edata = .);
  143   __bss_start = .;
  144   .bss            :
  145   {
  146    *(.dynbss)
  147    *(.bss .bss.* .gnu.linkonce.b.*)
  148    *(COMMON)
  149    /* Align here to ensure that the .bss section occupies space up to
  150       _end.  Align after .bss to ensure correct alignment even if the
  151       .bss section disappears because there are no input sections.
  152       FIXME: Why do we need it? When there is no .bss section, we don't
  153       pad the .data section.  */
  154    . = ALIGN(. != 0 ? 32 / 8 : 1);
  155   }
  156   . = ALIGN(32 / 8);
  157   . = ALIGN(32 / 8);
  158   _end = .; PROVIDE (end = .);
  159   . = DATA_SEGMENT_END (.);
  160   /* Stabs debugging sections.  */
  161   .stab          0 : { *(.stab) }
  162   .stabstr       0 : { *(.stabstr) }
  163   .stab.excl     0 : { *(.stab.excl) }
  164   .stab.exclstr  0 : { *(.stab.exclstr) }
  165   .stab.index    0 : { *(.stab.index) }
  166   .stab.indexstr 0 : { *(.stab.indexstr) }
  167   .comment       0 : { *(.comment) }
  168   /* DWARF debug sections.
  169      Symbols in the DWARF debugging sections are relative to the beginning
  170      of the section so we begin them at 0.  */
  171   /* DWARF 1 */
  172   .debug          0 : { *(.debug) }
  173   .line           0 : { *(.line) }
  174   /* GNU DWARF 1 extensions */
  175   .debug_srcinfo  0 : { *(.debug_srcinfo) }
  176   .debug_sfnames  0 : { *(.debug_sfnames) }
  177   /* DWARF 1.1 and DWARF 2 */
  178   .debug_aranges  0 : { *(.debug_aranges) }
  179   .debug_pubnames 0 : { *(.debug_pubnames) }
  180   /* DWARF 2 */
  181   .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
  182   .debug_abbrev   0 : { *(.debug_abbrev) }
  183   .debug_line     0 : { *(.debug_line) }
  184   .debug_frame    0 : { *(.debug_frame) }
  185   .debug_str      0 : { *(.debug_str) }
  186   .debug_loc      0 : { *(.debug_loc) }
  187   .debug_macinfo  0 : { *(.debug_macinfo) }
  188   /* SGI/MIPS DWARF 2 extensions */
  189   .debug_weaknames 0 : { *(.debug_weaknames) }
  190   .debug_funcnames 0 : { *(.debug_funcnames) }
  191   .debug_typenames 0 : { *(.debug_typenames) }
  192   .debug_varnames  0 : { *(.debug_varnames) }
  193   /* DWARF 3 */
  194   .debug_pubtypes 0 : { *(.debug_pubtypes) }
  195   .debug_ranges   0 : { *(.debug_ranges) }
  196   .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }
  197   /DISCARD/ : { *(.note.GNU-stack) }
  198 }

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