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- #ifndef _ASM_X86_VDSO_H
- #define _ASM_X86_VDSO_H
- #if defined CONFIG_X86_32 || defined CONFIG_COMPAT
- extern const char VDSO32_PRELINK[];
- /*
- * Given a pointer to the vDSO image, find the pointer to VDSO32_name
- * as that symbol is defined in the vDSO sources or linker script.
- */
- #define VDSO32_SYMBOL(base, name) \
- ({ \
- extern const char VDSO32_##name[]; \
- (void __user *)(VDSO32_##name - VDSO32_PRELINK + \
- (unsigned long)(base)); \
- })
- #endif
- /*
- * These symbols are defined with the addresses in the vsyscall page.
- * See vsyscall-sigreturn.S.
- */
- extern void __user __kernel_sigreturn;
- extern void __user __kernel_rt_sigreturn;
- /*
- * These symbols are defined by vdso32.S to mark the bounds
- * of the ELF DSO images included therein.
- */
- extern const char vdso32_int80_start, vdso32_int80_end;
- extern const char vdso32_syscall_start, vdso32_syscall_end;
- extern const char vdso32_sysenter_start, vdso32_sysenter_end;
- #endif /* _ASM_X86_VDSO_H */
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