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File: [Development] / linux-2.6-xfs / include / asm-x86 / vdso.h (download)

Revision 1.2, Mon Aug 4 17:03:13 2008 UTC (9 years, 2 months ago) by lachlan.longdrop.melbourne.sgi.com
Branch: MAIN
Changes since 1.1: +17 -6 lines 

Merge up to 2.6.26
Merge of 2.6.x-xfs-melb:linux:31804b by kenmcd.

#ifndef _ASM_X86_VDSO_H
#define _ASM_X86_VDSO_H	1

#ifdef CONFIG_X86_64
extern const char VDSO64_PRELINK[];

/*
 * Given a pointer to the vDSO image, find the pointer to VDSO64_name
 * as that symbol is defined in the vDSO sources or linker script.
 */
#define VDSO64_SYMBOL(base, name)					\
({									\
	extern const char VDSO64_##name[];				\
	(void *)(VDSO64_##name - VDSO64_PRELINK + (unsigned long)(base)); \
})
#endif

#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 *)(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;

#endif	/* asm-x86/vdso.h */