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 /* text_mapping.pages is big enough for data/size page pointers */ 17 struct vm_special_mapping text_mapping; 18 19 unsigned long alt, alt_len; 20 21 long sym_vvar_start; /* Negative offset to the vvar area */ 22 23 long sym_vvar_page; 24 long sym_hpet_page; 25 long sym_VDSO32_NOTE_MASK; 26 long sym___kernel_sigreturn; 27 long sym___kernel_rt_sigreturn; 28 long sym___kernel_vsyscall; 29 long sym_VDSO32_SYSENTER_RETURN; 30 }; 31 32 #ifdef CONFIG_X86_64 33 extern const struct vdso_image vdso_image_64; 34 #endif 35 36 #ifdef CONFIG_X86_X32 37 extern const struct vdso_image vdso_image_x32; 38 #endif 39 40 #if defined CONFIG_X86_32 || defined CONFIG_COMPAT 41 extern const struct vdso_image vdso_image_32_int80; 42 #ifdef CONFIG_COMPAT 43 extern const struct vdso_image vdso_image_32_syscall; 44 #endif 45 extern const struct vdso_image vdso_image_32_sysenter; 46 47 extern const struct vdso_image *selected_vdso32; 48 #endif 49 50 extern void __init init_vdso_image(const struct vdso_image *image); 51 52 #endif /* __ASSEMBLER__ */ 53 54 #endif /* _ASM_X86_VDSO_H */ 55