arch/x86/include/asm/vdso.h

   1 #ifndef _ASM_X86_VDSO_H
   2 #define _ASM_X86_VDSO_H
   3
   4 #include <asm/page_types.h>
   5 #include <linux/linkage.h>
   6 #include <linux/init.h>
   7
   8 #ifndef __ASSEMBLER__
   9
  10 #include <linux/mm_types.h>
  11
  12 struct vdso_image {
  13         void *data;
  14         unsigned long size;   /* Always a multiple of PAGE_SIZE */
  15
  16         unsigned long alt, alt_len;
  17
  18         long sym_vvar_start;  /* Negative offset to the vvar area */
  19
  20         long sym_vvar_page;
  21         long sym_hpet_page;
  22         long sym_pvclock_page;
  23         long sym_hvclock_page;
  24         long sym_VDSO32_NOTE_MASK;
  25         long sym___kernel_sigreturn;
  26         long sym___kernel_rt_sigreturn;
  27         long sym___kernel_vsyscall;
  28         long sym_int80_landing_pad;
  29 };
  30
  31 #ifdef CONFIG_X86_64
  32 extern const struct vdso_image vdso_image_64;
  33 #endif
  34
  35 #ifdef CONFIG_X86_X32
  36 extern const struct vdso_image vdso_image_x32;
  37 #endif
  38
  39 #if defined CONFIG_X86_32 || defined CONFIG_COMPAT
  40 extern const struct vdso_image vdso_image_32;
  41 #endif
  42
  43 extern void __init init_vdso_image(const struct vdso_image *image);
  44
  45 extern int map_vdso_once(const struct vdso_image *image, unsigned long addr);
  46
  47 #endif /* __ASSEMBLER__ */
  48
  49 #endif /* _ASM_X86_VDSO_H */