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kern.ldscript revision 1.2 
      1 /* Default linker script, for normal executables */
      2 OUTPUT_FORMAT("elf64-littleaarch64", "elf64-bigaarch64",
      3 	      "elf64-littleaarch64")
      4 OUTPUT_ARCH(aarch64)
      5 ENTRY(_start)
      6 SECTIONS
      7 {
      8   /* Read-only sections, merged into text segment: */
      9   PROVIDE (__kernel_text = .;
     10   .text           :
     11   {
     12     PROVIDE_HIDDEN (__eprol = .);
     13     *(.text)
     14     *(.text.unlikely .text.*_unlikely)
     15     *(.text.exit .text.exit.*)
     16     *(.text.startup .text.startup.*)
     17     *(.text.hot .text.hot.*)
     18     *(.stub .text.* .gnu.linkonce.t.*)
     19     /* .gnu.warning sections are handled specially by elf32.em.  */
     20     . = ALIGN(0x800)
     21     *(.vectors)
     22   } =0
     23   .rodata         : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
     24   .rodata1        : { *(.rodata1) }
     25   .eh_frame_hdr : { *(.eh_frame_hdr) }
     26   .eh_frame       : ONLY_IF_RO { KEEP (*(.eh_frame)) }
     27   .gcc_except_table   : ONLY_IF_RO { *(.gcc_except_table
     28   .gcc_except_table.*) }
     29   /* These sections are generated by the Sun/Oracle C++ compiler.  */
     30   .exception_ranges   : ONLY_IF_RO { *(.exception_ranges
     31   .exception_ranges*) }
     32   PROVIDE (__etext = .);
     33   PROVIDE (_etext = .);
     34   PROVIDE (etext = .);
     35   /* Adjust the address for the data segment.  We want to adjust up to
     36      the same address within the page on the next page up.  */
     37   . = ALIGN (CONSTANT (MAXPAGESIZE)) - ((CONSTANT (MAXPAGESIZE) - .) & (CONSTANT (MAXPAGESIZE) - 1)); . = DATA_SEGMENT_ALIGN (CONSTANT (MAXPAGESIZE), CONSTANT (COMMONPAGESIZE));
     38   /* Exception handling  */
     39   .eh_frame       : ONLY_IF_RW { KEEP (*(.eh_frame)) }
     40   .gcc_except_table   : ONLY_IF_RW { *(.gcc_except_table .gcc_except_table.*) }
     41   .exception_ranges   : ONLY_IF_RW { *(.exception_ranges .exception_ranges*) }
     42   .got            : { *(.got) *(.igot) }
     43   . = DATA_SEGMENT_RELRO_END (24, .);
     44   .got.plt        : { *(.got.plt)  *(.igot.plt) }
     45   .data           :
     46   {
     47     PROVIDE (__data_start = .);
     48     *(.data .data.* .gnu.linkonce.d.*)
     49     SORT(CONSTRUCTORS)
     50   }
     51   .data1          : { *(.data1) }
     52   _edata = .; PROVIDE (edata = .);
     53   . = .;
     54   __bss_start = .;
     55   __bss_start__ = .;
     56   .bss            :
     57   {
     58     *(.dynbss)
     59     *(.bss .bss.* .gnu.linkonce.b.*)
     60     *(COMMON)
     61     /* Align here to ensure that the .bss section occupies space up to
     62        _end.  Align after .bss to ensure correct alignment even if the
     63        .bss section disappears because there are no input sections.
     64        FIXME: Why do we need it? When there is no .bss section, we don't
     65        pad the .data section.  */
     66     . = ALIGN(. != 0 ? 32 / 8 : 1);
     67   }
     68   _bss_end__ = . ; __bss_end__ = . ;
     69   . = ALIGN(32 / 8);
     70   . = ALIGN(32 / 8);
     71   __end__ = . ;
     72   _end = .; PROVIDE (end = .);
     73   . = DATA_SEGMENT_END (.);
     74   .comment       0 : { *(.comment) }
     75   .ident         0 : { *(.ident) }
     76   /* DWARF debug sections.
     77      Symbols in the DWARF debugging sections are relative to the beginning
     78      of the section so we begin them at 0.  */
     79   /* DWARF 1 */
     80   .debug          0 : { *(.debug) }
     81   .line           0 : { *(.line) }
     82   /* GNU DWARF 1 extensions */
     83   .debug_srcinfo  0 : { *(.debug_srcinfo) }
     84   .debug_sfnames  0 : { *(.debug_sfnames) }
     85   /* DWARF 1.1 and DWARF 2 */
     86   .debug_aranges  0 : { *(.debug_aranges) }
     87   .debug_pubnames 0 : { *(.debug_pubnames) }
     88   /* DWARF 2 */
     89   .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
     90   .debug_abbrev   0 : { *(.debug_abbrev) }
     91   .debug_line     0 : { *(.debug_line) }
     92   .debug_frame    0 : { *(.debug_frame) }
     93   .debug_str      0 : { *(.debug_str) }
     94   .debug_loc      0 : { *(.debug_loc) }
     95   .debug_macinfo  0 : { *(.debug_macinfo) }
     96   /* SGI/MIPS DWARF 2 extensions */
     97   .debug_weaknames 0 : { *(.debug_weaknames) }
     98   .debug_funcnames 0 : { *(.debug_funcnames) }
     99   .debug_typenames 0 : { *(.debug_typenames) }
    100   .debug_varnames  0 : { *(.debug_varnames) }
    101   /* DWARF 3 */
    102   .debug_pubtypes 0 : { *(.debug_pubtypes) }
    103   .debug_ranges   0 : { *(.debug_ranges) }
    104   /* DWARF Extension.  */
    105   .debug_macro    0 : { *(.debug_macro) }
    106   .ARM.attributes 0 : { KEEP (*(.ARM.attributes)) KEEP (*(.gnu.attributes)) }
    107   .note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) }
    108   /DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.gnu.lto_*) }
    109 }
    110