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kern.ldscript revision 1.6 
      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   .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. Move .data to the next L2 block,
     36      and .text and .rodata will be set readonly if needed. */
     37   PROVIDE (_erodata = .);
     38   . = ALIGN (L2_SIZE);
     39   . = DATA_SEGMENT_ALIGN (CONSTANT (MAXPAGESIZE), CONSTANT (COMMONPAGESIZE));
     40   /* Exception handling  */
     41   .eh_frame       : ONLY_IF_RW { KEEP (*(.eh_frame)) }
     42   .gcc_except_table   : ONLY_IF_RW { *(.gcc_except_table .gcc_except_table.*) }
     43   .exception_ranges   : ONLY_IF_RW { *(.exception_ranges .exception_ranges*) }
     44   .got            : { *(.got) *(.igot) }
     45   . = DATA_SEGMENT_RELRO_END (24, .);
     46   .got.plt        : { *(.got.plt)  *(.igot.plt) }
     47   .data           :
     48   {
     49     PROVIDE (__data_start = .);
     50     *(.data .gnu.linkonce.d.*)
     51     SORT(CONSTRUCTORS)
     52   }
     53   .data1          : { *(.data1) }
     54 
     55   . = ALIGN(64);	/* COHERENCY_UNIT */
     56   .data.cacheline_aligned :
     57   {
     58     *(.data.cacheline_aligned)
     59   }
     60   . = ALIGN(64);	/* COHERENCY_UNIT */
     61   .data.read_mostly :
     62   {
     63     *(.data.read_mostly)
     64   }
     65   . = ALIGN(64);	/* COHERENCY_UNIT */
     66 
     67   _edata = .; PROVIDE (edata = .);
     68   . = .;
     69   __bss_start = .;
     70   __bss_start__ = .;
     71   .bss            :
     72   {
     73     *(.dynbss)
     74     *(.bss .bss.* .gnu.linkonce.b.*)
     75     *(COMMON)
     76     /* Align here to ensure that the .bss section occupies space up to
     77        _end.  Align after .bss to ensure correct alignment even if the
     78        .bss section disappears because there are no input sections.
     79        FIXME: Why do we need it? When there is no .bss section, we don't
     80        pad the .data section.  */
     81     . = ALIGN(. != 0 ? 32 / 8 : 1);
     82   }
     83   _bss_end__ = . ; __bss_end__ = . ;
     84   . = ALIGN(32 / 8);
     85   . = ALIGN(32 / 8);
     86   __end__ = . ;
     87   _end = .; PROVIDE (end = .);
     88   . = DATA_SEGMENT_END (.);
     89   .ARM.attributes 0 : { KEEP (*(.ARM.attributes)) KEEP (*(.gnu.attributes)) }
     90   .note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) }
     91 }
     92