[deliverable/linux.git] / arch / x86 / vdso / vdso_image.h

#ifndef _VDSO_IMAGE_H
#define _VDSO_IMAGE_H

#include <asm/page_types.h>
#include <linux/linkage.h>

#define DEFINE_VDSO_IMAGE(symname, filename)				\
__PAGE_ALIGNED_DATA ;							\
	.globl symname##_start, symname##_end ;				\
	.align PAGE_SIZE ;						\
	symname##_start: ;						\
	.incbin filename ;						\
	symname##_end: ;						\
	.align PAGE_SIZE /* extra data here leaks to userspace. */ ;	\
									\
.previous ;								\
									\
	.globl symname##_pages ;					\
	.bss ;								\
	.align 8 ;							\
	.type symname##_pages, @object ;				\
	symname##_pages: ;						\
	.zero (symname##_end - symname##_start + PAGE_SIZE - 1) / PAGE_SIZE * (BITS_PER_LONG / 8) ; \
	.size symname##_pages, .-symname##_pages

#define DECLARE_VDSO_IMAGE(symname)				\
	extern char symname##_start[], symname##_end[];		\
	extern struct page *symname##_pages[]

#endif /* _VDSO_IMAGE_H */
Commit	Line	Data
b67e612c AL	1	#ifndef _VDSO_IMAGE_H
	2	#define _VDSO_IMAGE_H
	3
	4	#include <asm/page_types.h>
	5	#include <linux/linkage.h>
	6
	7	#define DEFINE_VDSO_IMAGE(symname, filename) \
	8	__PAGE_ALIGNED_DATA ; \
	9	.globl symname##_start, symname##_end ; \
	10	.align PAGE_SIZE ; \
	11	symname##_start: ; \
	12	.incbin filename ; \
	13	symname##_end: ; \
	14	.align PAGE_SIZE /* extra data here leaks to userspace. */ ; \
	15	\
	16	.previous ; \
	17	\
	18	.globl symname##_pages ; \
	19	.bss ; \
	20	.align 8 ; \
	21	.type symname##_pages, @object ; \
	22	symname##_pages: ; \
	23	.zero (symname##_end - symname##_start + PAGE_SIZE - 1) / PAGE_SIZE * (BITS_PER_LONG / 8) ; \
	24	.size symname##_pages, .-symname##_pages
	25
	26	#define DECLARE_VDSO_IMAGE(symname) \
	27	extern char symname##_start[], symname##_end[]; \
	28	extern struct page *symname##_pages[]
	29
	30	#endif /* _VDSO_IMAGE_H */