diff options
Diffstat (limited to 'arch/x86/include/asm/vdso.h')
| -rw-r--r-- | arch/x86/include/asm/vdso.h | 54 |
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 */ |