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 struct vdso_image {
  11         void *data;
  12         unsigned long size;   /* Always a multiple of PAGE_SIZE */
  13         struct page **pages;  /* Big enough for data/size page pointers */
  14
  15         unsigned long alt, alt_len;
  16
  17         unsigned long sym_end_mapping;  /* Total size of the mapping */
  18
  19         unsigned long sym_vvar_page;
  20         unsigned long sym_hpet_page;
  21         unsigned long sym_VDSO32_NOTE_MASK;
  22         unsigned long sym___kernel_sigreturn;
  23         unsigned long sym___kernel_rt_sigreturn;
  24         unsigned long sym___kernel_vsyscall;
  25         unsigned long sym_VDSO32_SYSENTER_RETURN;
  26 };
  27
  28 #ifdef CONFIG_X86_64
  29 extern const struct vdso_image vdso_image_64;
  30 #endif
  31
  32 #ifdef CONFIG_X86_X32
  33 extern const struct vdso_image vdso_image_x32;
  34 #endif
  35
  36 #if defined CONFIG_X86_32 || defined CONFIG_COMPAT
  37 extern const struct vdso_image vdso_image_32_int80;
  38 #ifdef CONFIG_COMPAT
  39 extern const struct vdso_image vdso_image_32_syscall;
  40 #endif
  41 extern const struct vdso_image vdso_image_32_sysenter;
  42
  43 extern const struct vdso_image *selected_vdso32;
  44 #endif
  45
  46 extern void __init init_vdso_image(const struct vdso_image *image);
  47
  48 #endif /* __ASSEMBLER__ */
  49
  50 #endif /* _ASM_X86_VDSO_H */