| #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 */ |