Commit | Line | Data |
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7f3646aa RM |
1 | #ifndef _ASM_X86_VDSO_H |
2 | #define _ASM_X86_VDSO_H 1 | |
3 | ||
6c3652ef | 4 | #ifdef CONFIG_X86_64 |
7f3646aa RM |
5 | extern const char VDSO64_PRELINK[]; |
6 | ||
7 | /* | |
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. | |
10 | */ | |
ac1a7b0e JP |
11 | #define VDSO64_SYMBOL(base, name) \ |
12 | ({ \ | |
13 | extern const char VDSO64_##name[]; \ | |
14 | (void *)(VDSO64_##name - VDSO64_PRELINK + (unsigned long)(base)); \ | |
15 | }) | |
6c3652ef RM |
16 | #endif |
17 | ||
18 | #if defined CONFIG_X86_32 || defined CONFIG_COMPAT | |
19 | extern const char VDSO32_PRELINK[]; | |
20 | ||
21 | /* | |
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. | |
24 | */ | |
ac1a7b0e JP |
25 | #define VDSO32_SYMBOL(base, name) \ |
26 | ({ \ | |
27 | extern const char VDSO32_##name[]; \ | |
28 | (void *)(VDSO32_##name - VDSO32_PRELINK + (unsigned long)(base)); \ | |
29 | }) | |
6c3652ef | 30 | #endif |
7f3646aa | 31 | |
eee6dd15 IM |
32 | /* |
33 | * These symbols are defined with the addresses in the vsyscall page. | |
34 | * See vsyscall-sigreturn.S. | |
35 | */ | |
36 | extern void __user __kernel_sigreturn; | |
37 | extern void __user __kernel_rt_sigreturn; | |
38 | ||
6a52e4b1 JF |
39 | /* |
40 | * These symbols are defined by vdso32.S to mark the bounds | |
41 | * of the ELF DSO images included therein. | |
42 | */ | |
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; | |
46 | ||
7f3646aa | 47 | #endif /* asm-x86/vdso.h */ |