1 #ifndef _ASM_X86_VDSO_H
2 #define _ASM_X86_VDSO_H 1
5 extern const char VDSO64_PRELINK
[];
8 * Given a pointer to the vDSO image, find the pointer to VDSO64_name
9 * as that symbol is defined in the vDSO sources or linker script.
11 #define VDSO64_SYMBOL(base, name) \
13 extern const char VDSO64_##name[]; \
14 (void *)(VDSO64_##name - VDSO64_PRELINK + (unsigned long)(base)); \
18 #if defined CONFIG_X86_32 || defined CONFIG_COMPAT
19 extern const char VDSO32_PRELINK
[];
22 * Given a pointer to the vDSO image, find the pointer to VDSO32_name
23 * as that symbol is defined in the vDSO sources or linker script.
25 #define VDSO32_SYMBOL(base, name) \
27 extern const char VDSO32_##name[]; \
28 (void *)(VDSO32_##name - VDSO32_PRELINK + (unsigned long)(base)); \
33 * These symbols are defined with the addresses in the vsyscall page.
34 * See vsyscall-sigreturn.S.
36 extern void __user __kernel_sigreturn
;
37 extern void __user __kernel_rt_sigreturn
;
40 * These symbols are defined by vdso32.S to mark the bounds
41 * of the ELF DSO images included therein.
43 extern const char vdso32_int80_start
, vdso32_int80_end
;
44 extern const char vdso32_syscall_start
, vdso32_syscall_end
;
45 extern const char vdso32_sysenter_start
, vdso32_sysenter_end
;
47 #endif /* asm-x86/vdso.h */