diff options
Diffstat (limited to 'arch/x86/include/asm/vdso.h')
| -rw-r--r-- | arch/x86/include/asm/vdso.h | 50 |
1 files changed, 50 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..bbcdc7b8f --- /dev/null +++ b/arch/x86/include/asm/vdso.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#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 */ + + unsigned long alt, alt_len; + + long sym_vvar_start; /* Negative offset to the vvar area */ + + long sym_vvar_page; + long sym_pvclock_page; + long sym_hvclock_page; + long sym_timens_page; + long sym_VDSO32_NOTE_MASK; + long sym___kernel_sigreturn; + long sym___kernel_rt_sigreturn; + long sym___kernel_vsyscall; + long sym_int80_landing_pad; +}; + +#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; +#endif + +extern void __init init_vdso_image(const struct vdso_image *image); + +extern int map_vdso_once(const struct vdso_image *image, unsigned long addr); + +#endif /* __ASSEMBLER__ */ + +#endif /* _ASM_X86_VDSO_H */ |