arch/x86/vdso/vdso.lds.S

   1 /*
   2  * Linker script for 64-bit vDSO.
   3  * We #include the file to define the layout details.
   4  * Here we only choose the prelinked virtual address.
   5  *
   6  * This file defines the version script giving the user-exported symbols in
   7  * the DSO.  We can define local symbols here called VDSO* to make their
   8  * values visible using the asm-x86/vdso.h macros from the kernel proper.
   9  */
  10
  11 #define VDSO_PRELINK 0xffffffffff700000
  12 #include "vdso-layout.lds.S"
  13
  14 /*
  15  * This controls what userland symbols we export from the vDSO.
  16  */
  17 VERSION {
  18         LINUX_2.6 {
  19         global:
  20                 clock_gettime;
  21                 __vdso_clock_gettime;
  22                 gettimeofday;
  23                 __vdso_gettimeofday;
  24                 getcpu;
  25                 __vdso_getcpu;
  26         local: *;
  27         };
  28 }
  29
  30 VDSO64_PRELINK = VDSO_PRELINK;
  31
  32 /*
  33  * Define VDSO64_x for each VEXTERN(x), for use via VDSO64_SYMBOL.
  34  */
  35 #define VEXTERN(x)      VDSO64_ ## x = vdso_ ## x;
  36 #include "vextern.h"
  37 #undef  VEXTERN