Home | History | Annotate | Download | only in ldscripts
      1 /* Script for --shared -z combreloc -z now -z relro: shared library, combine & sort relocs */
      2 /* Copyright (C) 2014 Free Software Foundation, Inc.
      3    Copying and distribution of this script, with or without modification,
      4    are permitted in any medium without royalty provided the copyright
      5    notice and this notice are preserved.  */
      6 OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm",
      7 	      "elf32-littlearm")
      8 OUTPUT_ARCH(arm)
      9 ENTRY(_start)
     10 SECTIONS
     11 {
     12   /* Read-only sections, merged into text segment: */
     13   . = 0 + SIZEOF_HEADERS;
     14   .note.gnu.build-id : { *(.note.gnu.build-id) }
     15   .hash           : { *(.hash) }
     16   .gnu.hash       : { *(.gnu.hash) }
     17   .dynsym         : { *(.dynsym) }
     18   .dynstr         : { *(.dynstr) }
     19   .gnu.version    : { *(.gnu.version) }
     20   .gnu.version_d  : { *(.gnu.version_d) }
     21   .gnu.version_r  : { *(.gnu.version_r) }
     22   .rel.dyn        :
     23     {
     24       *(.rel.init)
     25       *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*)
     26       *(.rel.fini)
     27       *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*)
     28       *(.rel.data.rel.ro .rel.data.rel.ro.* .rel.gnu.linkonce.d.rel.ro.*)
     29       *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*)
     30       *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*)
     31       *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*)
     32       *(.rel.ctors)
     33       *(.rel.dtors)
     34       *(.rel.got)
     35       *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*)
     36       *(.rel.iplt)
     37     }
     38   .rela.dyn       :
     39     {
     40       *(.rela.init)
     41       *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*)
     42       *(.rela.fini)
     43       *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*)
     44       *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*)
     45       *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*)
     46       *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*)
     47       *(.rela.ctors)
     48       *(.rela.dtors)
     49       *(.rela.got)
     50       *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*)
     51       *(.rela.iplt)
     52     }
     53   .rel.plt        :
     54     {
     55       *(.rel.plt)
     56     }
     57   .rela.plt       :
     58     {
     59       *(.rela.plt)
     60     }
     61   .init           :
     62   {
     63     KEEP (*(SORT_NONE(.init)))
     64   }
     65   .plt            : { *(.plt) }
     66   .iplt           : { *(.iplt) }
     67   .text           :
     68   {
     69     *(.text.unlikely .text.*_unlikely .text.unlikely.*)
     70     *(.text.exit .text.exit.*)
     71     *(.text.startup .text.startup.*)
     72     *(.text.hot .text.hot.*)
     73     *(.text .stub .text.* .gnu.linkonce.t.*)
     74     /* .gnu.warning sections are handled specially by elf32.em.  */
     75     *(.gnu.warning)
     76     *(.glue_7t) *(.glue_7) *(.vfp11_veneer) *(.v4_bx)
     77   }
     78   .fini           :
     79   {
     80     KEEP (*(SORT_NONE(.fini)))
     81   }
     82   PROVIDE (__etext = .);
     83   PROVIDE (_etext = .);
     84   PROVIDE (etext = .);
     85   .rodata         : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
     86   .rodata1        : { *(.rodata1) }
     87   .ARM.extab   : { *(.ARM.extab* .gnu.linkonce.armextab.*) }
     88    PROVIDE_HIDDEN (__exidx_start = .);
     89   .ARM.exidx   : { *(.ARM.exidx* .gnu.linkonce.armexidx.*) }
     90    PROVIDE_HIDDEN (__exidx_end = .);
     91   .eh_frame_hdr : { *(.eh_frame_hdr) }
     92   .eh_frame       : ONLY_IF_RO { KEEP (*(.eh_frame)) }
     93   .gcc_except_table   : ONLY_IF_RO { *(.gcc_except_table
     94   .gcc_except_table.*) }
     95   /* These sections are generated by the Sun/Oracle C++ compiler.  */
     96   .exception_ranges   : ONLY_IF_RO { *(.exception_ranges
     97   .exception_ranges*) }
     98   /* Adjust the address for the data segment.  For 32 bits we want to align
     99   at exactly a page boundary to make life easier for apriori. */
    100   . = ALIGN (CONSTANT (MAXPAGESIZE)); . = DATA_SEGMENT_ALIGN (CONSTANT (MAXPAGESIZE), CONSTANT (COMMONPAGESIZE));
    101   /* Exception handling  */
    102   .eh_frame       : ONLY_IF_RW { KEEP (*(.eh_frame)) }
    103   .gcc_except_table   : ONLY_IF_RW { *(.gcc_except_table .gcc_except_table.*) }
    104   .exception_ranges   : ONLY_IF_RW { *(.exception_ranges .exception_ranges*) }
    105   /* Thread Local Storage sections  */
    106   .tdata	  : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
    107   .tbss		  : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
    108   /* Ensure the __preinit_array_start label is properly aligned.  We
    109      could instead move the label definition inside the section, but
    110      the linker would then create the section even if it turns out to
    111      be empty, which isn't pretty.  */
    112   . = ALIGN(32 / 8);
    113   .preinit_array     :
    114   {
    115     KEEP (*(.preinit_array))
    116   }
    117   .init_array     :
    118   {
    119     KEEP (*crtbegin*.o(.init_array))
    120     KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
    121     KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin*.o *crtend.o *crtend*.o ) .ctors))
    122   }
    123   .fini_array     :
    124   {
    125     KEEP (*crtbegin*.o(.fini_array))
    126     KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
    127     KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin*.o *crtend.o *crtend*.o ) .dtors))
    128   }
    129   .ctors          :
    130   {
    131     /* gcc uses crtbegin.o to find the start of
    132        the constructors, so we make sure it is
    133        first.  Because this is a wildcard, it
    134        doesn't matter if the user does not
    135        actually link against crtbegin.o; the
    136        linker won't look for a file to match a
    137        wildcard.  The wildcard also means that it
    138        doesn't matter which directory crtbegin.o
    139        is in.  */
    140     KEEP (*crtbegin.o(.ctors))
    141     KEEP (*crtbegin*.o(.ctors))
    142     /* We don't want to include the .ctor section from
    143        the crtend.o file until after the sorted ctors.
    144        The .ctor section from the crtend file contains the
    145        end of ctors marker and it must be last */
    146     KEEP (*(EXCLUDE_FILE (*crtend.o *crtend*.o ) .ctors))
    147     KEEP (*(SORT(.ctors.*)))
    148     KEEP (*(.ctors))
    149   }
    150   .dtors          :
    151   {
    152     KEEP (*crtbegin.o(.dtors))
    153     KEEP (*crtbegin*.o(.dtors))
    154     KEEP (*(EXCLUDE_FILE (*crtend.o *crtend*.o ) .dtors))
    155     KEEP (*(SORT(.dtors.*)))
    156     KEEP (*(.dtors))
    157   }
    158   .jcr            : { KEEP (*(.jcr)) }
    159   .data.rel.ro : { *(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*) *(.data.rel.ro .data.rel.ro.* .gnu.linkonce.d.rel.ro.*) }
    160   .dynamic        : { *(.dynamic) }
    161   .got            : { *(.got.plt) *(.igot.plt) *(.got) *(.igot) }
    162   . = DATA_SEGMENT_RELRO_END (0, .);
    163   .data           :
    164   {
    165     PROVIDE (__data_start = .);
    166     *(.data .data.* .gnu.linkonce.d.*)
    167     SORT(CONSTRUCTORS)
    168   }
    169   .data1          : { *(.data1) }
    170   _edata = .; PROVIDE (edata = .);
    171   __bss_start = .;
    172   __bss_start__ = .;
    173   .bss            :
    174   {
    175    *(.dynbss)
    176    *(.bss .bss.* .gnu.linkonce.b.*)
    177    *(COMMON)
    178    /* Align here to ensure that the .bss section occupies space up to
    179       _end.  Align after .bss to ensure correct alignment even if the
    180       .bss section disappears because there are no input sections.  */
    181    . = ALIGN(32 / 8);
    182   }
    183   _bss_end__ = . ; __bss_end__ = . ;
    184   . = ALIGN(32 / 8);
    185   . = SEGMENT_START("ldata-segment", .);
    186   . = ALIGN(32 / 8);
    187   __end__ = . ;
    188   _end = .;
    189   _bss_end__ = . ; __bss_end__ = . ; __end__ = . ;
    190   PROVIDE (end = .);
    191   . = DATA_SEGMENT_END (.);
    192   /* Stabs debugging sections.  */
    193   .stab          0 : { *(.stab) }
    194   .stabstr       0 : { *(.stabstr) }
    195   .stab.excl     0 : { *(.stab.excl) }
    196   .stab.exclstr  0 : { *(.stab.exclstr) }
    197   .stab.index    0 : { *(.stab.index) }
    198   .stab.indexstr 0 : { *(.stab.indexstr) }
    199   .comment       0 : { *(.comment) }
    200   /* DWARF debug sections.
    201      Symbols in the DWARF debugging sections are relative to the beginning
    202      of the section so we begin them at 0.  */
    203   /* DWARF 1 */
    204   .debug          0 : { *(.debug) }
    205   .line           0 : { *(.line) }
    206   /* GNU DWARF 1 extensions */
    207   .debug_srcinfo  0 : { *(.debug_srcinfo) }
    208   .debug_sfnames  0 : { *(.debug_sfnames) }
    209   /* DWARF 1.1 and DWARF 2 */
    210   .debug_aranges  0 : { *(.debug_aranges) }
    211   .debug_pubnames 0 : { *(.debug_pubnames) }
    212   /* DWARF 2 */
    213   .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
    214   .debug_abbrev   0 : { *(.debug_abbrev) }
    215   .debug_line     0 : { *(.debug_line .debug_line.* .debug_line_end ) }
    216   .debug_frame    0 : { *(.debug_frame) }
    217   .debug_str      0 : { *(.debug_str) }
    218   .debug_loc      0 : { *(.debug_loc) }
    219   .debug_macinfo  0 : { *(.debug_macinfo) }
    220   /* SGI/MIPS DWARF 2 extensions */
    221   .debug_weaknames 0 : { *(.debug_weaknames) }
    222   .debug_funcnames 0 : { *(.debug_funcnames) }
    223   .debug_typenames 0 : { *(.debug_typenames) }
    224   .debug_varnames  0 : { *(.debug_varnames) }
    225   /* DWARF 3 */
    226   .debug_pubtypes 0 : { *(.debug_pubtypes) }
    227   .debug_ranges   0 : { *(.debug_ranges) }
    228   /* DWARF Extension.  */
    229   .debug_macro    0 : { *(.debug_macro) }
    230   .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }
    231   .note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) }
    232   /DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.gnu.lto_*) *(.mdebug.*) }
    233 }
    234