tools/testing/selftests/bpf/test_btf.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (c) 2019 Facebook */
   3
   4 #ifndef _TEST_BTF_H
   5 #define _TEST_BTF_H
   6
   7 #define BTF_INFO_ENC(kind, kind_flag, vlen)                     \
   8         ((!!(kind_flag) << 31) | ((kind) << 24) | ((vlen) & BTF_MAX_VLEN))
   9
  10 #define BTF_TYPE_ENC(name, info, size_or_type)  \
  11         (name), (info), (size_or_type)
  12
  13 #define BTF_INT_ENC(encoding, bits_offset, nr_bits)     \
  14         ((encoding) << 24 | (bits_offset) << 16 | (nr_bits))
  15 #define BTF_TYPE_INT_ENC(name, encoding, bits_offset, bits, sz) \
  16         BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_INT, 0, 0), sz),       \
  17         BTF_INT_ENC(encoding, bits_offset, bits)
  18
  19 #define BTF_FWD_ENC(name, kind_flag) \
  20         BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FWD, kind_flag, 0), 0)
  21
  22 #define BTF_ARRAY_ENC(type, index_type, nr_elems)       \
  23         (type), (index_type), (nr_elems)
  24 #define BTF_TYPE_ARRAY_ENC(type, index_type, nr_elems) \
  25         BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ARRAY, 0, 0), 0), \
  26         BTF_ARRAY_ENC(type, index_type, nr_elems)
  27
  28 #define BTF_STRUCT_ENC(name, nr_elems, sz)      \
  29         BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, nr_elems), sz)
  30
  31 #define BTF_UNION_ENC(name, nr_elems, sz)       \
  32         BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_UNION, 0, nr_elems), sz)
  33
  34 #define BTF_VAR_ENC(name, type, linkage)        \
  35         BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_VAR, 0, 0), type), (linkage)
  36 #define BTF_VAR_SECINFO_ENC(type, offset, size) \
  37         (type), (offset), (size)
  38
  39 #define BTF_MEMBER_ENC(name, type, bits_offset) \
  40         (name), (type), (bits_offset)
  41 #define BTF_ENUM_ENC(name, val) (name), (val)
  42 #define BTF_MEMBER_OFFSET(bitfield_size, bits_offset) \
  43         ((bitfield_size) << 24 | (bits_offset))
  44
  45 #define BTF_TYPEDEF_ENC(name, type) \
  46         BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_TYPEDEF, 0, 0), type)
  47
  48 #define BTF_PTR_ENC(type) \
  49         BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), type)
  50
  51 #define BTF_CONST_ENC(type) \
  52         BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), type)
  53
  54 #define BTF_VOLATILE_ENC(type) \
  55         BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_VOLATILE, 0, 0), type)
  56
  57 #define BTF_RESTRICT_ENC(type) \
  58         BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_RESTRICT, 0, 0), type)
  59
  60 #define BTF_FUNC_PROTO_ENC(ret_type, nargs) \
  61         BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_FUNC_PROTO, 0, nargs), ret_type)
  62
  63 #define BTF_FUNC_PROTO_ARG_ENC(name, type) \
  64         (name), (type)
  65
  66 #define BTF_FUNC_ENC(name, func_proto) \
  67         BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FUNC, 0, 0), func_proto)
  68
  69 #endif /* _TEST_BTF_H */