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      1 /* Script for -pie -z combreloc: position independent executable, 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-bigarm", "elf32-bigarm",
      7 	      "elf32-littlearm")
      8 OUTPUT_ARCH(arm)
      9 ENTRY(_start)
     10 SECTIONS
     11 {
     12   /* Read-only sections, merged into text segment: */
     13   PROVIDE (__executable_start = 0); . = 0 + SIZEOF_HEADERS;
     14   .interp         : { *(.interp) }
     15   .note.gnu.build-id : { *(.note.gnu.build-id) }
     16   .hash           : { *(.hash) }
     17   .gnu.hash       : { *(.gnu.hash) }
     18   .dynsym         : { *(.dynsym) }
     19   .dynstr         : { *(.dynstr) }
     20   .gnu.version    : { *(.gnu.version) }
     21   .gnu.version_d  : { *(.gnu.version_d) }
     22   .gnu.version_r  : { *(.gnu.version_r) }
     23   .rel.dyn        :
     24     {
     25       *(.rel.init)
     26       *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*)
     27       *(.rel.fini)
     28       *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*)
     29       *(.rel.data.rel.ro .rel.data.rel.ro.* .rel.gnu.linkonce.d.rel.ro.*)
     30       *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*)
     31       *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*)
     32       *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*)
     33       *(.rel.ctors)
     34       *(.rel.dtors)
     35       *(.rel.got)
     36       *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*)
     37       PROVIDE_HIDDEN (__rel_iplt_start = .);
     38       *(.rel.iplt)
     39       PROVIDE_HIDDEN (__rel_iplt_end = .);
     40     }
     41   .rela.dyn       :
     42     {
     43       *(.rela.init)
     44       *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*)
     45       *(.rela.fini)
     46       *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*)
     47       *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*)
     48       *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*)
     49       *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*)
     50       *(.rela.ctors)
     51       *(.rela.dtors)
     52       *(.rela.got)
     53       *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*)
     54       PROVIDE_HIDDEN (__rela_iplt_start = .);
     55       *(.rela.iplt)
     56       PROVIDE_HIDDEN (__rela_iplt_end = .);
     57     }
     58   .rel.plt        :
     59     {
     60       *(.rel.plt)
     61     }
     62   .rela.plt       :
     63     {
     64       *(.rela.plt)
     65     }
     66   .init           :
     67   {
     68     KEEP (*(SORT_NONE(.init)))
     69   }
     70   .plt            : { *(.plt) }
     71   .iplt           : { *(.iplt) }
     72   .text           :
     73   {
     74     *(.text.unlikely .text.*_unlikely .text.unlikely.*)
     75     *(.text.exit .text.exit.*)
     76     *(.text.startup .text.startup.*)
     77     *(.text.hot .text.hot.*)
     78     *(.text .stub .text.* .gnu.linkonce.t.*)
     79     /* .gnu.warning sections are handled specially by elf32.em.  */
     80     *(.gnu.warning)
     81     *(.glue_7t) *(.glue_7) *(.vfp11_veneer) *(.v4_bx)
     82   }
     83   .fini           :
     84   {
     85     KEEP (*(SORT_NONE(.fini)))
     86   }
     87   PROVIDE (__etext = .);
     88   PROVIDE (_etext = .);
     89   PROVIDE (etext = .);
     90   .rodata         : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
     91   .rodata1        : { *(.rodata1) }
     92   .ARM.extab   : { *(.ARM.extab* .gnu.linkonce.armextab.*) }
     93    PROVIDE_HIDDEN (__exidx_start = .);
     94   .ARM.exidx   : { *(.ARM.exidx* .gnu.linkonce.armexidx.*) }
     95    PROVIDE_HIDDEN (__exidx_end = .);
     96   .eh_frame_hdr : { *(.eh_frame_hdr) }
     97   .eh_frame       : ONLY_IF_RO { KEEP (*(.eh_frame)) }
     98   .gcc_except_table   : ONLY_IF_RO { *(.gcc_except_table
     99   .gcc_except_table.*) }
    100   /* These sections are generated by the Sun/Oracle C++ compiler.  */
    101   .exception_ranges   : ONLY_IF_RO { *(.exception_ranges
    102   .exception_ranges*) }
    103   /* Adjust the address for the data segment.  For 32 bits we want to align
    104   at exactly a page boundary to make life easier for apriori. */
    105   . = ALIGN (CONSTANT (MAXPAGESIZE)); . = DATA_SEGMENT_ALIGN (CONSTANT (MAXPAGESIZE), CONSTANT (COMMONPAGESIZE));
    106   /* Exception handling  */
    107   .eh_frame       : ONLY_IF_RW { KEEP (*(.eh_frame)) }
    108   .gcc_except_table   : ONLY_IF_RW { *(.gcc_except_table .gcc_except_table.*) }
    109   .exception_ranges   : ONLY_IF_RW { *(.exception_ranges .exception_ranges*) }
    110   /* Thread Local Storage sections  */
    111   .tdata	  : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
    112   .tbss		  : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
    113   /* Ensure the __preinit_array_start label is properly aligned.  We
    114      could instead move the label definition inside the section, but
    115      the linker would then create the section even if it turns out to
    116      be empty, which isn't pretty.  */
    117   . = ALIGN(32 / 8);
    118   PROVIDE_HIDDEN (__preinit_array_start = .);
    119   .preinit_array     :
    120   {
    121     KEEP (*(.preinit_array))
    122   }
    123   PROVIDE_HIDDEN (__preinit_array_end = .);
    124   PROVIDE_HIDDEN (__init_array_start = .);
    125   .init_array     :
    126   {
    127     KEEP (*crtbegin*.o(.init_array))
    128     KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
    129     KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin*.o *crtend.o *crtend*.o ) .ctors))
    130   }
    131   PROVIDE_HIDDEN (__init_array_end = .);
    132   PROVIDE_HIDDEN (__fini_array_start = .);
    133   .fini_array     :
    134   {
    135     KEEP (*crtbegin*.o(.fini_array))
    136     KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
    137     KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin*.o *crtend.o *crtend*.o ) .dtors))
    138   }
    139   PROVIDE_HIDDEN (__fini_array_end = .);
    140   .ctors          :
    141   {
    142     /* gcc uses crtbegin.o to find the start of
    143        the constructors, so we make sure it is
    144        first.  Because this is a wildcard, it
    145        doesn't matter if the user does not
    146        actually link against crtbegin.o; the
    147        linker won't look for a file to match a
    148        wildcard.  The wildcard also means that it
    149        doesn't matter which directory crtbegin.o
    150        is in.  */
    151     KEEP (*crtbegin.o(.ctors))
    152     KEEP (*crtbegin*.o(.ctors))
    153     /* We don't want to include the .ctor section from
    154        the crtend.o file until after the sorted ctors.
    155        The .ctor section from the crtend file contains the
    156        end of ctors marker and it must be last */
    157     KEEP (*(EXCLUDE_FILE (*crtend.o *crtend*.o ) .ctors))
    158     KEEP (*(SORT(.ctors.*)))
    159     KEEP (*(.ctors))
    160   }
    161   .dtors          :
    162   {
    163     KEEP (*crtbegin.o(.dtors))
    164     KEEP (*crtbegin*.o(.dtors))
    165     KEEP (*(EXCLUDE_FILE (*crtend.o *crtend*.o ) .dtors))
    166     KEEP (*(SORT(.dtors.*)))
    167     KEEP (*(.dtors))
    168   }
    169   .jcr            : { KEEP (*(.jcr)) }
    170   .data.rel.ro : { *(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*) *(.data.rel.ro .data.rel.ro.* .gnu.linkonce.d.rel.ro.*) }
    171   .dynamic        : { *(.dynamic) }
    172   . = DATA_SEGMENT_RELRO_END (0, .);
    173   .got            : { *(.got.plt) *(.igot.plt) *(.got) *(.igot) }
    174   .data           :
    175   {
    176     PROVIDE (__data_start = .);
    177     *(.data .data.* .gnu.linkonce.d.*)
    178     SORT(CONSTRUCTORS)
    179   }
    180   .data1          : { *(.data1) }
    181   _edata = .; PROVIDE (edata = .);
    182   __bss_start = .;
    183   __bss_start__ = .;
    184   .bss            :
    185   {
    186    *(.dynbss)
    187    *(.bss .bss.* .gnu.linkonce.b.*)
    188    *(COMMON)
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    190       _end.  Align after .bss to ensure correct alignment even if the
    191       .bss section disappears because there are no input sections.  */
    192    . = ALIGN(32 / 8);
    193   }
    194   _bss_end__ = . ; __bss_end__ = . ;
    195   . = ALIGN(32 / 8);
    196   . = SEGMENT_START("ldata-segment", .);
    197   . = ALIGN(32 / 8);
    198   __end__ = . ;
    199   _end = .;
    200   _bss_end__ = . ; __bss_end__ = . ; __end__ = . ;
    201   PROVIDE (end = .);
    202   . = DATA_SEGMENT_END (.);
    203   /* Stabs debugging sections.  */
    204   .stab          0 : { *(.stab) }
    205   .stabstr       0 : { *(.stabstr) }
    206   .stab.excl     0 : { *(.stab.excl) }
    207   .stab.exclstr  0 : { *(.stab.exclstr) }
    208   .stab.index    0 : { *(.stab.index) }
    209   .stab.indexstr 0 : { *(.stab.indexstr) }
    210   .comment       0 : { *(.comment) }
    211   /* DWARF debug sections.
    212      Symbols in the DWARF debugging sections are relative to the beginning
    213      of the section so we begin them at 0.  */
    214   /* DWARF 1 */
    215   .debug          0 : { *(.debug) }
    216   .line           0 : { *(.line) }
    217   /* GNU DWARF 1 extensions */
    218   .debug_srcinfo  0 : { *(.debug_srcinfo) }
    219   .debug_sfnames  0 : { *(.debug_sfnames) }
    220   /* DWARF 1.1 and DWARF 2 */
    221   .debug_aranges  0 : { *(.debug_aranges) }
    222   .debug_pubnames 0 : { *(.debug_pubnames) }
    223   /* DWARF 2 */
    224   .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
    225   .debug_abbrev   0 : { *(.debug_abbrev) }
    226   .debug_line     0 : { *(.debug_line .debug_line.* .debug_line_end ) }
    227   .debug_frame    0 : { *(.debug_frame) }
    228   .debug_str      0 : { *(.debug_str) }
    229   .debug_loc      0 : { *(.debug_loc) }
    230   .debug_macinfo  0 : { *(.debug_macinfo) }
    231   /* SGI/MIPS DWARF 2 extensions */
    232   .debug_weaknames 0 : { *(.debug_weaknames) }
    233   .debug_funcnames 0 : { *(.debug_funcnames) }
    234   .debug_typenames 0 : { *(.debug_typenames) }
    235   .debug_varnames  0 : { *(.debug_varnames) }
    236   /* DWARF 3 */
    237   .debug_pubtypes 0 : { *(.debug_pubtypes) }
    238   .debug_ranges   0 : { *(.debug_ranges) }
    239   /* DWARF Extension.  */
    240   .debug_macro    0 : { *(.debug_macro) }
    241   .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }
    242   .note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) }
    243   /DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.gnu.lto_*) *(.mdebug.*) }
    244 }
    245