Home | History | Annotate | Download | only in ldscripts
      1 /* Script for -z combreloc -z now -z relro: combine and sort reloc sections */
      2 OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64",
      3 	      "elf64-x86-64")
      4 OUTPUT_ARCH(i386:x86-64)
      5 ENTRY(_start)
      6 SECTIONS
      7 {
      8   /* Read-only sections, merged into text segment: */
      9   PROVIDE (__executable_start = 0x400000); . = 0x400000 + SIZEOF_HEADERS;
     10   .interp         : { *(.interp) }
     11   .note.gnu.build-id : { *(.note.gnu.build-id) }
     12   .hash           : { *(.hash) }
     13   .gnu.hash       : { *(.gnu.hash) }
     14   .dynsym         : { *(.dynsym) }
     15   .dynstr         : { *(.dynstr) }
     16   .gnu.version    : { *(.gnu.version) }
     17   .gnu.version_d  : { *(.gnu.version_d) }
     18   .gnu.version_r  : { *(.gnu.version_r) }
     19   .rela.dyn       :
     20     {
     21       *(.rela.init)
     22       *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*)
     23       *(.rela.fini)
     24       *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*)
     25       *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*)
     26       *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*)
     27       *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*)
     28       *(.rela.ctors)
     29       *(.rela.dtors)
     30       *(.rela.got)
     31       *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*)
     32       *(.rela.ldata .rela.ldata.* .rela.gnu.linkonce.l.*)
     33       *(.rela.lbss .rela.lbss.* .rela.gnu.linkonce.lb.*)
     34       *(.rela.lrodata .rela.lrodata.* .rela.gnu.linkonce.lr.*)
     35       *(.rela.ifunc)
     36     }
     37   .rela.plt       :
     38     {
     39       *(.rela.plt)
     40       PROVIDE_HIDDEN (__rela_iplt_start = .);
     41       *(.rela.iplt)
     42       PROVIDE_HIDDEN (__rela_iplt_end = .);
     43     }
     44   .init           :
     45   {
     46     KEEP (*(.init))
     47   }
     48   .plt            : { *(.plt) *(.iplt) }
     49   .text           :
     50   {
     51     *(.text.unlikely .text.*_unlikely)
     52     *(.text.exit .text.exit.*)
     53     *(.text.startup .text.startup.*)
     54     *(.text.hot .text.hot.*)
     55     *(.text .stub .text.* .gnu.linkonce.t.*)
     56     /* .gnu.warning sections are handled specially by elf32.em.  */
     57     *(.gnu.warning)
     58   }
     59   .fini           :
     60   {
     61     KEEP (*(.fini))
     62   }
     63   PROVIDE (__etext = .);
     64   PROVIDE (_etext = .);
     65   PROVIDE (etext = .);
     66   .rodata         : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
     67   .rodata1        : { *(.rodata1) }
     68   .eh_frame_hdr : { *(.eh_frame_hdr) }
     69   .eh_frame       : ONLY_IF_RO { KEEP (*(.eh_frame)) }
     70   .gcc_except_table   : ONLY_IF_RO { *(.gcc_except_table
     71   .gcc_except_table.*) }
     72   /* These sections are generated by the Sun/Oracle C++ compiler.  */
     73   .exception_ranges   : ONLY_IF_RO { *(.exception_ranges
     74   .exception_ranges*) }
     75   /* Adjust the address for the data segment.  We want to align at exactly
     76      a page boundary to make life easier for apriori. */
     77   . = ALIGN (CONSTANT (MAXPAGESIZE)); . = DATA_SEGMENT_ALIGN (CONSTANT (MAXPAGESIZE), CONSTANT (COMMONPAGESIZE));
     78   /* Exception handling  */
     79   .eh_frame       : ONLY_IF_RW { KEEP (*(.eh_frame)) }
     80   .gcc_except_table   : ONLY_IF_RW { *(.gcc_except_table .gcc_except_table.*) }
     81   .exception_ranges   : ONLY_IF_RW { *(.exception_ranges .exception_ranges*) }
     82   /* Thread Local Storage sections  */
     83   .tdata	  : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
     84   .tbss		  : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
     85   /* Ensure the __preinit_array_start label is properly aligned.  We
     86      could instead move the label definition inside the section, but
     87      the linker would then create the section even if it turns out to
     88      be empty, which isn't pretty.  */
     89   . = ALIGN(32 / 8);
     90   PROVIDE_HIDDEN (__preinit_array_start = .);
     91   .preinit_array     :
     92   {
     93     KEEP (*(.preinit_array))
     94   }
     95   PROVIDE_HIDDEN (__preinit_array_end = .);
     96   PROVIDE_HIDDEN (__init_array_start = .);
     97   .init_array     :
     98   {
     99     KEEP (*crtbegin*.o(.init_array))
    100     KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
    101     KEEP (*(.init_array))
    102     KEEP (*(EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
    103   }
    104   PROVIDE_HIDDEN (__init_array_end = .);
    105   PROVIDE_HIDDEN (__fini_array_start = .);
    106   .fini_array     :
    107   {
    108     KEEP (*crtbegin*.o(.fini_array))
    109     KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
    110     KEEP (*(.fini_array))
    111     KEEP (*(EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
    112   }
    113   PROVIDE_HIDDEN (__fini_array_end = .);
    114   .ctors          :
    115   {
    116     /* gcc uses crtbegin.o to find the start of
    117        the constructors, so we make sure it is
    118        first.  Because this is a wildcard, it
    119        doesn't matter if the user does not
    120        actually link against crtbegin.o; the
    121        linker won't look for a file to match a
    122        wildcard.  The wildcard also means that it
    123        doesn't matter which directory crtbegin.o
    124        is in.  */
    125     KEEP (*crtbegin.o(.ctors))
    126     KEEP (*crtbegin*.o(.ctors))
    127     /* We don't want to include the .ctor section from
    128        the crtend.o file until after the sorted ctors.
    129        The .ctor section from the crtend file contains the
    130        end of ctors marker and it must be last */
    131     KEEP (*(EXCLUDE_FILE (*crtend.o *crtend*.o ) .ctors))
    132     KEEP (*(SORT(.ctors.*)))
    133     KEEP (*(.ctors))
    134   }
    135   .dtors          :
    136   {
    137     KEEP (*crtbegin.o(.dtors))
    138     KEEP (*crtbegin*.o(.dtors))
    139     KEEP (*(EXCLUDE_FILE (*crtend.o *crtend*.o ) .dtors))
    140     KEEP (*(SORT(.dtors.*)))
    141     KEEP (*(.dtors))
    142   }
    143   .jcr            : { KEEP (*(.jcr)) }
    144   .data.rel.ro : { *(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*) *(.data.rel.ro .data.rel.ro.* .gnu.linkonce.d.rel.ro.*) }
    145   .dynamic        : { *(.dynamic) }
    146   .got            : { *(.got.plt) *(.igot.plt) *(.got) *(.igot) }
    147   . = DATA_SEGMENT_RELRO_END (0, .);
    148   .data           :
    149   {
    150     *(.data .data.* .gnu.linkonce.d.*)
    151     SORT(CONSTRUCTORS)
    152   }
    153   .data1          : { *(.data1) }
    154   _edata = .; PROVIDE (edata = .);
    155   . = .;
    156   __bss_start = .;
    157   .bss            :
    158   {
    159    *(.dynbss)
    160    *(.bss .bss.* .gnu.linkonce.b.*)
    161    *(COMMON)
    162    /* Align here to ensure that the .bss section occupies space up to
    163       _end.  Align after .bss to ensure correct alignment even if the
    164       .bss section disappears because there are no input sections.  */
    165    . = ALIGN(64 / 8);
    166   }
    167   .lbss   :
    168   {
    169     *(.dynlbss)
    170     *(.lbss .lbss.* .gnu.linkonce.lb.*)
    171     *(LARGE_COMMON)
    172   }
    173   . = ALIGN(64 / 8);
    174   .lrodata   ALIGN(CONSTANT (MAXPAGESIZE)) + (. & (CONSTANT (MAXPAGESIZE) - 1)) :
    175   {
    176     *(.lrodata .lrodata.* .gnu.linkonce.lr.*)
    177   }
    178   .ldata   ALIGN(CONSTANT (MAXPAGESIZE)) + (. & (CONSTANT (MAXPAGESIZE) - 1)) :
    179   {
    180     *(.ldata .ldata.* .gnu.linkonce.l.*)
    181     . = ALIGN(. != 0 ? 64 / 8 : 1);
    182   }
    183   . = ALIGN(64 / 8);
    184   _end = .;
    185   _bss_end__ = . ; __bss_end__ = . ; __end__ = . ;
    186   PROVIDE (end = .);
    187   . = DATA_SEGMENT_END (.);
    188   /* Stabs debugging sections.  */
    189   .stab          0 : { *(.stab) }
    190   .stabstr       0 : { *(.stabstr) }
    191   .stab.excl     0 : { *(.stab.excl) }
    192   .stab.exclstr  0 : { *(.stab.exclstr) }
    193   .stab.index    0 : { *(.stab.index) }
    194   .stab.indexstr 0 : { *(.stab.indexstr) }
    195   .comment       0 : { *(.comment) }
    196   /* DWARF debug sections.
    197      Symbols in the DWARF debugging sections are relative to the beginning
    198      of the section so we begin them at 0.  */
    199   /* DWARF 1 */
    200   .debug          0 : { *(.debug) }
    201   .line           0 : { *(.line) }
    202   /* GNU DWARF 1 extensions */
    203   .debug_srcinfo  0 : { *(.debug_srcinfo) }
    204   .debug_sfnames  0 : { *(.debug_sfnames) }
    205   /* DWARF 1.1 and DWARF 2 */
    206   .debug_aranges  0 : { *(.debug_aranges) }
    207   .debug_pubnames 0 : { *(.debug_pubnames) }
    208   /* DWARF 2 */
    209   .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
    210   .debug_abbrev   0 : { *(.debug_abbrev) }
    211   .debug_line     0 : { *(.debug_line) }
    212   .debug_frame    0 : { *(.debug_frame) }
    213   .debug_str      0 : { *(.debug_str) }
    214   .debug_loc      0 : { *(.debug_loc) }
    215   .debug_macinfo  0 : { *(.debug_macinfo) }
    216   /* SGI/MIPS DWARF 2 extensions */
    217   .debug_weaknames 0 : { *(.debug_weaknames) }
    218   .debug_funcnames 0 : { *(.debug_funcnames) }
    219   .debug_typenames 0 : { *(.debug_typenames) }
    220   .debug_varnames  0 : { *(.debug_varnames) }
    221   /* DWARF 3 */
    222   .debug_pubtypes 0 : { *(.debug_pubtypes) }
    223   .debug_ranges   0 : { *(.debug_ranges) }
    224   /* DWARF Extension.  */
    225   .debug_macro    0 : { *(.debug_macro) }
    226   .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }
    227   /DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.gnu.lto_*) *(.mdebug.*) }
    228 }
    229