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kern.ldscript revision 1.7 
      1 #include "assym.h"
      2 
      3 /* Default linker script, for normal executables */
      4 OUTPUT_FORMAT("elf64-littleaarch64", "elf64-bigaarch64",
      5 	      "elf64-littleaarch64")
      6 OUTPUT_ARCH(aarch64)
      7 ENTRY(_start)
      8 SECTIONS
      9 {
     10   /* Read-only sections, merged into text segment: */
     11   .text           :
     12   {
     13     PROVIDE (__kernel_text = .);
     14     PROVIDE_HIDDEN (__eprol = .);
     15     *(.text)
     16     *(.text.unlikely .text.*_unlikely)
     17     *(.text.exit .text.exit.*)
     18     *(.text.startup .text.startup.*)
     19     *(.text.hot .text.hot.*)
     20     *(.stub .text.* .gnu.linkonce.t.*)
     21     /* .gnu.warning sections are handled specially by elf32.em.  */
     22   } =0
     23   /* Move .rodata to the next L2 block to set unexecutable */
     24   . = ALIGN (L2_SIZE);
     25   PROVIDE (__rodata_start = .);
     26   .rodata         : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
     27   .rodata1        : { *(.rodata1) }
     28   .eh_frame_hdr : { *(.eh_frame_hdr) }
     29   .eh_frame       : ONLY_IF_RO { KEEP (*(.eh_frame)) }
     30   .gcc_except_table   : ONLY_IF_RO { *(.gcc_except_table
     31   .gcc_except_table.*) }
     32   /* These sections are generated by the Sun/Oracle C++ compiler.  */
     33   .exception_ranges   : ONLY_IF_RO { *(.exception_ranges
     34   .exception_ranges*) }
     35   PROVIDE (__etext = .);
     36   PROVIDE (_etext = .);
     37   PROVIDE (etext = .);
     38   /* Adjust the address for the data segment. Move .data to the next L2 block,
     39      and .text and .rodata will be set readonly if needed. */
     40   PROVIDE (_erodata = .);
     41   . = ALIGN (L2_SIZE);
     42   . = DATA_SEGMENT_ALIGN (CONSTANT (MAXPAGESIZE), CONSTANT (COMMONPAGESIZE));
     43   /* Exception handling  */
     44   .eh_frame       : ONLY_IF_RW { KEEP (*(.eh_frame)) }
     45   .gcc_except_table   : ONLY_IF_RW { *(.gcc_except_table .gcc_except_table.*) }
     46   .exception_ranges   : ONLY_IF_RW { *(.exception_ranges .exception_ranges*) }
     47   .got            : { *(.got) *(.igot) }
     48   . = DATA_SEGMENT_RELRO_END (24, .);
     49   .got.plt        : { *(.got.plt)  *(.igot.plt) }
     50   .data           :
     51   {
     52     PROVIDE (__data_start = .);
     53     *(.data .gnu.linkonce.d.*)
     54     SORT(CONSTRUCTORS)
     55   }
     56   .data1          : { *(.data1) }
     57 
     58   . = ALIGN(64);	/* COHERENCY_UNIT */
     59   .data.cacheline_aligned :
     60   {
     61     *(.data.cacheline_aligned)
     62   }
     63   . = ALIGN(64);	/* COHERENCY_UNIT */
     64   .data.read_mostly :
     65   {
     66     *(.data.read_mostly)
     67   }
     68   . = ALIGN(64);	/* COHERENCY_UNIT */
     69 
     70   _edata = .; PROVIDE (edata = .);
     71   . = .;
     72   __bss_start = .;
     73   __bss_start__ = .;
     74   .bss            :
     75   {
     76     *(.dynbss)
     77     *(.bss .bss.* .gnu.linkonce.b.*)
     78     *(COMMON)
     79     /* Align here to ensure that the .bss section occupies space up to
     80        _end.  Align after .bss to ensure correct alignment even if the
     81        .bss section disappears because there are no input sections.
     82        FIXME: Why do we need it? When there is no .bss section, we don't
     83        pad the .data section.  */
     84     . = ALIGN(. != 0 ? 32 / 8 : 1);
     85   }
     86   _bss_end__ = . ; __bss_end__ = . ;
     87   . = ALIGN(32 / 8);
     88   . = ALIGN(32 / 8);
     89   __end__ = . ;
     90   _end = .; PROVIDE (end = .);
     91   . = DATA_SEGMENT_END (.);
     92   .ARM.attributes 0 : { KEEP (*(.ARM.attributes)) KEEP (*(.gnu.attributes)) }
     93   .note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) }
     94 }
     95