1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 *** To edit the content of this header, modify the corresponding 11 *** source file (e.g. under external/kernel-headers/original/) then 12 *** run bionic/libc/kernel/tools/update_all.py 13 *** 14 *** Any manual change here will be lost the next time this script will 15 *** be run. You've been warned! 16 *** 17 **************************************************************************** 18 ****************************************************************************/ 19 #ifndef _UAPI__LINUX_BTF_H__ 20 #define _UAPI__LINUX_BTF_H__ 21 #include <linux/types.h> 22 #define BTF_MAGIC 0xeB9F 23 #define BTF_VERSION 1 24 struct btf_header { 25 __u16 magic; 26 __u8 version; 27 __u8 flags; 28 __u32 hdr_len; 29 __u32 type_off; 30 __u32 type_len; 31 __u32 str_off; 32 __u32 str_len; 33 }; 34 #define BTF_MAX_TYPE 0x0000ffff 35 #define BTF_MAX_NAME_OFFSET 0x0000ffff 36 #define BTF_MAX_VLEN 0xffff 37 struct btf_type { 38 __u32 name_off; 39 __u32 info; 40 union { 41 __u32 size; 42 __u32 type; 43 }; 44 }; 45 #define BTF_INFO_KIND(info) (((info) >> 24) & 0x0f) 46 #define BTF_INFO_VLEN(info) ((info) & 0xffff) 47 #define BTF_INFO_KFLAG(info) ((info) >> 31) 48 #define BTF_KIND_UNKN 0 49 #define BTF_KIND_INT 1 50 #define BTF_KIND_PTR 2 51 #define BTF_KIND_ARRAY 3 52 #define BTF_KIND_STRUCT 4 53 #define BTF_KIND_UNION 5 54 #define BTF_KIND_ENUM 6 55 #define BTF_KIND_FWD 7 56 #define BTF_KIND_TYPEDEF 8 57 #define BTF_KIND_VOLATILE 9 58 #define BTF_KIND_CONST 10 59 #define BTF_KIND_RESTRICT 11 60 #define BTF_KIND_FUNC 12 61 #define BTF_KIND_FUNC_PROTO 13 62 #define BTF_KIND_MAX 13 63 #define NR_BTF_KINDS 14 64 #define BTF_INT_ENCODING(VAL) (((VAL) & 0x0f000000) >> 24) 65 #define BTF_INT_OFFSET(VAL) (((VAL & 0x00ff0000)) >> 16) 66 #define BTF_INT_BITS(VAL) ((VAL) & 0x000000ff) 67 #define BTF_INT_SIGNED (1 << 0) 68 #define BTF_INT_CHAR (1 << 1) 69 #define BTF_INT_BOOL (1 << 2) 70 struct btf_enum { 71 __u32 name_off; 72 __s32 val; 73 }; 74 struct btf_array { 75 __u32 type; 76 __u32 index_type; 77 __u32 nelems; 78 }; 79 struct btf_member { 80 __u32 name_off; 81 __u32 type; 82 __u32 offset; 83 }; 84 #define BTF_MEMBER_BITFIELD_SIZE(val) ((val) >> 24) 85 #define BTF_MEMBER_BIT_OFFSET(val) ((val) & 0xffffff) 86 struct btf_param { 87 __u32 name_off; 88 __u32 type; 89 }; 90 #endif 91