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Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1...
[mirror_ubuntu-artful-kernel.git] / arch / x86 / include / asm / vdso.h
1 #ifndef _ASM_X86_VDSO_H
2 #define _ASM_X86_VDSO_H
3
4 #if defined CONFIG_X86_32 || defined CONFIG_COMPAT
5 extern const char VDSO32_PRELINK[];
6
7 /*
8 * Given a pointer to the vDSO image, find the pointer to VDSO32_name
9 * as that symbol is defined in the vDSO sources or linker script.
10 */
11 #define VDSO32_SYMBOL(base, name) \
12 ({ \
13 extern const char VDSO32_##name[]; \
14 (void *)(VDSO32_##name - VDSO32_PRELINK + (unsigned long)(base)); \
15 })
16 #endif
17
18 /*
19 * These symbols are defined with the addresses in the vsyscall page.
20 * See vsyscall-sigreturn.S.
21 */
22 extern void __user __kernel_sigreturn;
23 extern void __user __kernel_rt_sigreturn;
24
25 /*
26 * These symbols are defined by vdso32.S to mark the bounds
27 * of the ELF DSO images included therein.
28 */
29 extern const char vdso32_int80_start, vdso32_int80_end;
30 extern const char vdso32_syscall_start, vdso32_syscall_end;
31 extern const char vdso32_sysenter_start, vdso32_sysenter_end;
32
33 #endif /* _ASM_X86_VDSO_H */