LXR linux/arch/s390/kernel/vdso64/vdso64.lds.S

   1/*
   2 * This is the infamous ld script for the 64 bits vdso
   3 * library
   4 */
   5#include <asm/vdso.h>
   6
   7OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
   8OUTPUT_ARCH(s390:64-bit)
   9ENTRY(_start)
  10
  11SECTIONS
  12{
  13        . = VDSO64_LBASE + SIZEOF_HEADERS;
  14
  15        .hash           : { *(.hash) }                  :text
  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
  23        .note           : { *(.note.*) }                :text   :note
  24
  25        . = ALIGN(16);
  26        .text           : {
  27                *(.text .stub .text.* .gnu.linkonce.t.*)
  28        } :text
  29        PROVIDE(__etext = .);
  30        PROVIDE(_etext = .);
  31        PROVIDE(etext = .);
  32
  33        /*
  34         * Other stuff is appended to the text segment:
  35         */
  36        .rodata         : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
  37        .rodata1        : { *(.rodata1) }
  38
  39        .dynamic        : { *(.dynamic) }               :text   :dynamic
  40
  41        .eh_frame_hdr   : { *(.eh_frame_hdr) }          :text   :eh_frame_hdr
  42        .eh_frame       : { KEEP (*(.eh_frame)) }       :text
  43        .gcc_except_table : { *(.gcc_except_table .gcc_except_table.*) }
  44
  45        .rela.dyn ALIGN(8) : { *(.rela.dyn) }
  46        .got ALIGN(8)   : { *(.got .toc) }
  47
  48        _end = .;
  49        PROVIDE(end = .);
  50
  51        /*
  52         * Stabs debugging sections are here too.
  53         */
  54        .stab          0 : { *(.stab) }
  55        .stabstr       0 : { *(.stabstr) }
  56        .stab.excl     0 : { *(.stab.excl) }
  57        .stab.exclstr  0 : { *(.stab.exclstr) }
  58        .stab.index    0 : { *(.stab.index) }
  59        .stab.indexstr 0 : { *(.stab.indexstr) }
  60        .comment       0 : { *(.comment) }
  61
  62        /*
  63         * DWARF debug sections.
  64         * Symbols in the DWARF debugging sections are relative to the
  65         * beginning of the section so we begin them at 0.
  66         */
  67        /* DWARF 1 */
  68        .debug          0 : { *(.debug) }
  69        .line           0 : { *(.line) }
  70        /* GNU DWARF 1 extensions */
  71        .debug_srcinfo  0 : { *(.debug_srcinfo) }
  72        .debug_sfnames  0 : { *(.debug_sfnames) }
  73        /* DWARF 1.1 and DWARF 2 */
  74        .debug_aranges  0 : { *(.debug_aranges) }
  75        .debug_pubnames 0 : { *(.debug_pubnames) }
  76        /* DWARF 2 */
  77        .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
  78        .debug_abbrev   0 : { *(.debug_abbrev) }
  79        .debug_line     0 : { *(.debug_line) }
  80        .debug_frame    0 : { *(.debug_frame) }
  81        .debug_str      0 : { *(.debug_str) }
  82        .debug_loc      0 : { *(.debug_loc) }
  83        .debug_macinfo  0 : { *(.debug_macinfo) }
  84        /* SGI/MIPS DWARF 2 extensions */
  85        .debug_weaknames 0 : { *(.debug_weaknames) }
  86        .debug_funcnames 0 : { *(.debug_funcnames) }
  87        .debug_typenames 0 : { *(.debug_typenames) }
  88        .debug_varnames  0 : { *(.debug_varnames) }
  89        /* DWARF 3 */
  90        .debug_pubtypes 0 : { *(.debug_pubtypes) }
  91        .debug_ranges   0 : { *(.debug_ranges) }
  92        .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }
  93
  94        . = ALIGN(4096);
  95        PROVIDE(_vdso_data = .);
  96
  97        /DISCARD/       : {
  98                *(.note.GNU-stack)
  99                *(.branch_lt)
 100                *(.data .data.* .gnu.linkonce.d.* .sdata*)
 101                *(.bss .sbss .dynbss .dynsbss)
 102        }
 103}
 104
 105/*
 106 * Very old versions of ld do not recognize this name token; use the constant.
 107 */
 108#define PT_GNU_EH_FRAME 0x6474e550
 109
 110/*
 111 * We must supply the ELF program headers explicitly to get just one
 112 * PT_LOAD segment, and set the flags explicitly to make segments read-only.
 113 */
 114PHDRS
 115{
 116        text            PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
 117        dynamic         PT_DYNAMIC FLAGS(4);            /* PF_R */
 118        note            PT_NOTE FLAGS(4);               /* PF_R */
 119        eh_frame_hdr    PT_GNU_EH_FRAME;
 120}
 121
 122/*
 123 * This controls what symbols we export from the DSO.
 124 */
 125VERSION
 126{
 127        VDSO_VERSION_STRING {
 128        global:
 129                /*
 130                 * Has to be there for the kernel to find
 131                 */
 132                __kernel_gettimeofday;
 133                __kernel_clock_gettime;
 134                __kernel_clock_getres;
 135
 136        local: *;
 137        };
 138}
 139