arch/x86/vdso/vdso32/vdso32.lds.S

   1 /*
   2  * Linker script for 32-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 #include <asm/page.h>
  12
  13 #define BUILD_VDSO32
  14 #define VDSO_PRELINK 0
  15
  16 #include "../vdso-layout.lds.S"
  17
  18 /* The ELF entry point can be used to set the AT_SYSINFO value.  */
  19 ENTRY(__kernel_vsyscall);
  20
  21 /*
  22  * This controls what userland symbols we export from the vDSO.
  23  */
  24 VERSION
  25 {
  26         LINUX_2.6 {
  27         global:
  28                 __vdso_clock_gettime;
  29                 __vdso_gettimeofday;
  30                 __vdso_time;
  31         };
  32
  33         LINUX_2.5 {
  34         global:
  35                 __kernel_vsyscall;
  36                 __kernel_sigreturn;
  37                 __kernel_rt_sigreturn;
  38         local: *;
  39         };
  40 }