| Roland McGrath | 7f3646a | 2008-01-30 13:30:41 +0100 | [diff] [blame] | 1 | #ifndef _ASM_X86_VDSO_H |
| 2 | #define _ASM_X86_VDSO_H 1 |
| 3 | |
| Roland McGrath | 6c3652e | 2008-01-30 13:30:42 +0100 | [diff] [blame] | 4 | #ifdef CONFIG_X86_64 |
| Roland McGrath | 7f3646a | 2008-01-30 13:30:41 +0100 | [diff] [blame] | 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 | */ |
| 11 | #define VDSO64_SYMBOL(base, name) ({ \ |
| 12 | extern const char VDSO64_##name[]; \ |
| 13 | (void *) (VDSO64_##name - VDSO64_PRELINK + (unsigned long) (base)); }) |
| Roland McGrath | 6c3652e | 2008-01-30 13:30:42 +0100 | [diff] [blame] | 14 | #endif |
| 15 | |
| 16 | #if defined CONFIG_X86_32 || defined CONFIG_COMPAT |
| 17 | extern const char VDSO32_PRELINK[]; |
| 18 | |
| 19 | /* |
| 20 | * Given a pointer to the vDSO image, find the pointer to VDSO32_name |
| 21 | * as that symbol is defined in the vDSO sources or linker script. |
| 22 | */ |
| 23 | #define VDSO32_SYMBOL(base, name) ({ \ |
| 24 | extern const char VDSO32_##name[]; \ |
| 25 | (void *) (VDSO32_##name - VDSO32_PRELINK + (unsigned long) (base)); }) |
| 26 | #endif |
| Roland McGrath | 7f3646a | 2008-01-30 13:30:41 +0100 | [diff] [blame] | 27 | |
| Ingo Molnar | eee6dd1 | 2008-03-06 10:39:07 +0100 | [diff] [blame^] | 28 | /* |
| 29 | * These symbols are defined with the addresses in the vsyscall page. |
| 30 | * See vsyscall-sigreturn.S. |
| 31 | */ |
| 32 | extern void __user __kernel_sigreturn; |
| 33 | extern void __user __kernel_rt_sigreturn; |
| 34 | |
| Roland McGrath | 7f3646a | 2008-01-30 13:30:41 +0100 | [diff] [blame] | 35 | #endif /* asm-x86/vdso.h */ |