diff options
Diffstat (limited to 'arch/x86/vdso/vdso_image.h')
| -rw-r--r-- | arch/x86/vdso/vdso_image.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/x86/vdso/vdso_image.h b/arch/x86/vdso/vdso_image.h new file mode 100644 index 000000000000..1baa6bc517bf --- /dev/null +++ b/arch/x86/vdso/vdso_image.h @@ -0,0 +1,30 @@ +#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 */ |