LXR linux/arch/powerpc/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
   7#ifdef __LITTLE_ENDIAN__
   8OUTPUT_FORMAT("elf64-powerpcle", "elf64-powerpcle", "elf64-powerpcle")
   9#else
  10OUTPUT_FORMAT("elf64-powerpc", "elf64-powerpc", "elf64-powerpc")
  11#endif
  12OUTPUT_ARCH(powerpc:common64)
  13ENTRY(_start)
  14
  15SECTIONS
  16{
  17        . = VDSO64_LBASE + SIZEOF_HEADERS;
  18
  19        .hash           : { *(.hash) }                  :text
  20        .gnu.hash       : { *(.gnu.hash) }
  21        .dynsym         : { *(.dynsym) }
  22        .dynstr         : { *(.dynstr) }
  23        .gnu.version    : { *(.gnu.version) }
  24        .gnu.version_d  : { *(.gnu.version_d) }
  25        .gnu.version_r  : { *(.gnu.version_r) }
  26
  27        .note           : { *(.note.*) }                :text   :note
  28
  29        . = ALIGN(16);
  30        .text           : {
  31                *(.text .stub .text.* .gnu.linkonce.t.* __ftr_alt_*)
  32                *(.sfpr .glink)
  33        }                                               :text
  34        PROVIDE(__etext = .);
  35        PROVIDE(_etext = .);
  36        PROVIDE(etext = .);
  37
  38        . = ALIGN(8);
  39        __ftr_fixup     : { *(__ftr_fixup) }
  40
  41        . = ALIGN(8);
  42        __mmu_ftr_fixup : { *(__mmu_ftr_fixup) }
  43
  44        . = ALIGN(8);
  45        __lwsync_fixup  : { *(__lwsync_fixup) }
  46
  47        . = ALIGN(8);
  48        __fw_ftr_fixup  : { *(__fw_ftr_fixup) }
  49
  50        /*
  51         * Other stuff is appended to the text segment:
  52         */
  53        .rodata         : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
  54        .rodata1        : { *(.rodata1) }
  55
  56        .dynamic        : { *(.dynamic) }               :text   :dynamic
  57
  58        .eh_frame_hdr   : { *(.eh_frame_hdr) }          :text   :eh_frame_hdr
  59        .eh_frame       : { KEEP (*(.eh_frame)) }       :text
  60        .gcc_except_table : { *(.gcc_except_table) }
  61        .rela.dyn ALIGN(8) : { *(.rela.dyn) }
  62
  63        .opd ALIGN(8)   : { KEEP (*(.opd)) }
  64        .got ALIGN(8)   : { *(.got .toc) }
  65
  66        _end = .;
  67        PROVIDE(end = .);
  68
  69        /*
  70         * Stabs debugging sections are here too.
  71         */
  72        .stab          0 : { *(.stab) }
  73        .stabstr       0 : { *(.stabstr) }
  74        .stab.excl     0 : { *(.stab.excl) }
  75        .stab.exclstr  0 : { *(.stab.exclstr) }
  76        .stab.index    0 : { *(.stab.index) }
  77        .stab.indexstr 0 : { *(.stab.indexstr) }
  78        .comment       0 : { *(.comment) }
  79
  80        /*
  81         * DWARF debug sections.
  82         * Symbols in the DWARF debugging sections are relative to the beginning
  83         * of the section so we begin them at 0.
  84         */
  85        /* DWARF 1 */
  86        .debug          0 : { *(.debug) }
  87        .line           0 : { *(.line) }
  88        /* GNU DWARF 1 extensions */
  89        .debug_srcinfo  0 : { *(.debug_srcinfo) }
  90        .debug_sfnames  0 : { *(.debug_sfnames) }
  91        /* DWARF 1.1 and DWARF 2 */
  92        .debug_aranges  0 : { *(.debug_aranges) }
  93        .debug_pubnames 0 : { *(.debug_pubnames) }
  94        /* DWARF 2 */
  95        .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
  96        .debug_abbrev   0 : { *(.debug_abbrev) }
  97        .debug_line     0 : { *(.debug_line) }
  98        .debug_frame    0 : { *(.debug_frame) }
  99        .debug_str      0 : { *(.debug_str) }
 100        .debug_loc      0 : { *(.debug_loc) }
 101        .debug_macinfo  0 : { *(.debug_macinfo) }
 102        /* SGI/MIPS DWARF 2 extensions */
 103        .debug_weaknames 0 : { *(.debug_weaknames) }
 104        .debug_funcnames 0 : { *(.debug_funcnames) }
 105        .debug_typenames 0 : { *(.debug_typenames) }
 106        .debug_varnames  0 : { *(.debug_varnames) }
 107
 108        /DISCARD/       : {
 109                *(.note.GNU-stack)
 110                *(.branch_lt)
 111                *(.data .data.* .gnu.linkonce.d.* .sdata*)
 112                *(.bss .sbss .dynbss .dynsbss)
 113        }
 114}
 115
 116/*
 117 * Very old versions of ld do not recognize this name token; use the constant.
 118 */
 119#define PT_GNU_EH_FRAME 0x6474e550
 120
 121/*
 122 * We must supply the ELF program headers explicitly to get just one
 123 * PT_LOAD segment, and set the flags explicitly to make segments read-only.
 124 */
 125PHDRS
 126{
 127        text            PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
 128        dynamic         PT_DYNAMIC FLAGS(4);            /* PF_R */
 129        note            PT_NOTE FLAGS(4);               /* PF_R */
 130        eh_frame_hdr    PT_GNU_EH_FRAME;
 131}
 132
 133/*
 134 * This controls what symbols we export from the DSO.
 135 */
 136VERSION
 137{
 138        VDSO_VERSION_STRING {
 139        global:
 140                /*
 141                 * Has to be there for the kernel to find
 142                 */
 143                __kernel_datapage_offset;
 144
 145                __kernel_get_syscall_map;
 146                __kernel_gettimeofday;
 147                __kernel_clock_gettime;
 148                __kernel_clock_getres;
 149                __kernel_get_tbfreq;
 150                __kernel_sync_dicache;
 151                __kernel_sync_dicache_p5;
 152                __kernel_sigtramp_rt64;
 153                __kernel_getcpu;
 154                __kernel_time;
 155
 156        local: *;
 157        };
 158}
 159