Initial import

1 files changed, 54 insertions, 0 deletions

diff --git a/arch/x86/include/asm/vdso.h b/arch/x86/include/asm/vdso.h
new file mode 100644
index 000000000..8021bd28c
--- /dev/null
+++ b/arch/x86/include/asm/vdso.h
@@ -0,0 +1,54 @@
+#ifndef _ASM_X86_VDSO_H
+#define _ASM_X86_VDSO_H
+
+#include <asm/page_types.h>
+#include <linux/linkage.h>
+#include <linux/init.h>
+
+#ifndef __ASSEMBLER__
+
+#include <linux/mm_types.h>
+
+struct vdso_image {
+	void *data;
+	unsigned long size;   /* Always a multiple of PAGE_SIZE */
+
+	/* text_mapping.pages is big enough for data/size page pointers */
+	struct vm_special_mapping text_mapping;
+
+	unsigned long alt, alt_len;
+
+	long sym_vvar_start;  /* Negative offset to the vvar area */
+
+	long sym_vvar_page;
+	long sym_hpet_page;
+	long sym_VDSO32_NOTE_MASK;
+	long sym___kernel_sigreturn;
+	long sym___kernel_rt_sigreturn;
+	long sym___kernel_vsyscall;
+	long sym_VDSO32_SYSENTER_RETURN;
+};
+
+#ifdef CONFIG_X86_64
+extern const struct vdso_image vdso_image_64;
+#endif
+
+#ifdef CONFIG_X86_X32
+extern const struct vdso_image vdso_image_x32;
+#endif
+
+#if defined CONFIG_X86_32 || defined CONFIG_COMPAT
+extern const struct vdso_image vdso_image_32_int80;
+#ifdef CONFIG_COMPAT
+extern const struct vdso_image vdso_image_32_syscall;
+#endif
+extern const struct vdso_image vdso_image_32_sysenter;
+
+extern const struct vdso_image *selected_vdso32;
+#endif
+
+extern void __init init_vdso_image(const struct vdso_image *image);
+
+#endif /* __ASSEMBLER__ */
+
+#endif /* _ASM_X86_VDSO_H */