1// SPDX-License-Identifier: GPL-2.0 2/* Copyright (c) 2020 Facebook */ 3#include <test_progs.h> 4#include <bpf/btf.h> 5#include "btf_helpers.h" 6 7static void gen_btf(struct btf *btf) 8{ 9 const struct btf_var_secinfo *vi; 10 const struct btf_type *t; 11 const struct btf_member *m; 12 const struct btf_enum64 *v64; 13 const struct btf_enum *v; 14 const struct btf_param *p; 15 int id, err, str_off; 16 17 str_off = btf__find_str(btf, "int"); 18 ASSERT_EQ(str_off, -ENOENT, "int_str_missing_off"); 19 20 str_off = btf__add_str(btf, "int"); 21 ASSERT_EQ(str_off, 1, "int_str_off"); 22 23 str_off = btf__find_str(btf, "int"); 24 ASSERT_EQ(str_off, 1, "int_str_found_off"); 25 26 /* BTF_KIND_INT */ 27 id = btf__add_int(btf, "int", 4, BTF_INT_SIGNED); 28 ASSERT_EQ(id, 1, "int_id"); 29 30 t = btf__type_by_id(btf, 1); 31 /* should re-use previously added "int" string */ 32 ASSERT_EQ(t->name_off, str_off, "int_name_off"); 33 ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "int", "int_name"); 34 ASSERT_EQ(btf_kind(t), BTF_KIND_INT, "int_kind"); 35 ASSERT_EQ(t->size, 4, "int_sz"); 36 ASSERT_EQ(btf_int_encoding(t), BTF_INT_SIGNED, "int_enc"); 37 ASSERT_EQ(btf_int_bits(t), 32, "int_bits"); 38 ASSERT_STREQ(btf_type_raw_dump(btf, 1), 39 "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", "raw_dump"); 40 41 /* invalid int size */ 42 id = btf__add_int(btf, "bad sz int", 7, 0); 43 ASSERT_ERR(id, "int_bad_sz"); 44 /* invalid encoding */ 45 id = btf__add_int(btf, "bad enc int", 4, 123); 46 ASSERT_ERR(id, "int_bad_enc"); 47 /* NULL name */ 48 id = btf__add_int(btf, NULL, 4, 0); 49 ASSERT_ERR(id, "int_bad_null_name"); 50 /* empty name */ 51 id = btf__add_int(btf, "", 4, 0); 52 ASSERT_ERR(id, "int_bad_empty_name"); 53 54 /* PTR/CONST/VOLATILE/RESTRICT */ 55 id = btf__add_ptr(btf, 1); 56 ASSERT_EQ(id, 2, "ptr_id"); 57 t = btf__type_by_id(btf, 2); 58 ASSERT_EQ(btf_kind(t), BTF_KIND_PTR, "ptr_kind"); 59 ASSERT_EQ(t->type, 1, "ptr_type"); 60 ASSERT_STREQ(btf_type_raw_dump(btf, 2), 61 "[2] PTR '(anon)' type_id=1", "raw_dump"); 62 63 id = btf__add_const(btf, 5); /* points forward to restrict */ 64 ASSERT_EQ(id, 3, "const_id"); 65 t = btf__type_by_id(btf, 3); 66 ASSERT_EQ(btf_kind(t), BTF_KIND_CONST, "const_kind"); 67 ASSERT_EQ(t->type, 5, "const_type"); 68 ASSERT_STREQ(btf_type_raw_dump(btf, 3), 69 "[3] CONST '(anon)' type_id=5", "raw_dump"); 70 71 id = btf__add_volatile(btf, 3); 72 ASSERT_EQ(id, 4, "volatile_id"); 73 t = btf__type_by_id(btf, 4); 74 ASSERT_EQ(btf_kind(t), BTF_KIND_VOLATILE, "volatile_kind"); 75 ASSERT_EQ(t->type, 3, "volatile_type"); 76 ASSERT_STREQ(btf_type_raw_dump(btf, 4), 77 "[4] VOLATILE '(anon)' type_id=3", "raw_dump"); 78 79 id = btf__add_restrict(btf, 4); 80 ASSERT_EQ(id, 5, "restrict_id"); 81 t = btf__type_by_id(btf, 5); 82 ASSERT_EQ(btf_kind(t), BTF_KIND_RESTRICT, "restrict_kind"); 83 ASSERT_EQ(t->type, 4, "restrict_type"); 84 ASSERT_STREQ(btf_type_raw_dump(btf, 5), 85 "[5] RESTRICT '(anon)' type_id=4", "raw_dump"); 86 87 /* ARRAY */ 88 id = btf__add_array(btf, 1, 2, 10); /* int *[10] */ 89 ASSERT_EQ(id, 6, "array_id"); 90 t = btf__type_by_id(btf, 6); 91 ASSERT_EQ(btf_kind(t), BTF_KIND_ARRAY, "array_kind"); 92 ASSERT_EQ(btf_array(t)->index_type, 1, "array_index_type"); 93 ASSERT_EQ(btf_array(t)->type, 2, "array_elem_type"); 94 ASSERT_EQ(btf_array(t)->nelems, 10, "array_nelems"); 95 ASSERT_STREQ(btf_type_raw_dump(btf, 6), 96 "[6] ARRAY '(anon)' type_id=2 index_type_id=1 nr_elems=10", "raw_dump"); 97 98 /* STRUCT */ 99 err = btf__add_field(btf, "field", 1, 0, 0); 100 ASSERT_ERR(err, "no_struct_field"); 101 id = btf__add_struct(btf, "s1", 8); 102 ASSERT_EQ(id, 7, "struct_id"); 103 err = btf__add_field(btf, "f1", 1, 0, 0); 104 ASSERT_OK(err, "f1_res"); 105 err = btf__add_field(btf, "f2", 1, 32, 16); 106 ASSERT_OK(err, "f2_res"); 107 108 t = btf__type_by_id(btf, 7); 109 ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "s1", "struct_name"); 110 ASSERT_EQ(btf_kind(t), BTF_KIND_STRUCT, "struct_kind"); 111 ASSERT_EQ(btf_vlen(t), 2, "struct_vlen"); 112 ASSERT_EQ(btf_kflag(t), true, "struct_kflag"); 113 ASSERT_EQ(t->size, 8, "struct_sz"); 114 m = btf_members(t) + 0; 115 ASSERT_STREQ(btf__str_by_offset(btf, m->name_off), "f1", "f1_name"); 116 ASSERT_EQ(m->type, 1, "f1_type"); 117 ASSERT_EQ(btf_member_bit_offset(t, 0), 0, "f1_bit_off"); 118 ASSERT_EQ(btf_member_bitfield_size(t, 0), 0, "f1_bit_sz"); 119 m = btf_members(t) + 1; 120 ASSERT_STREQ(btf__str_by_offset(btf, m->name_off), "f2", "f2_name"); 121 ASSERT_EQ(m->type, 1, "f2_type"); 122 ASSERT_EQ(btf_member_bit_offset(t, 1), 32, "f2_bit_off"); 123 ASSERT_EQ(btf_member_bitfield_size(t, 1), 16, "f2_bit_sz"); 124 ASSERT_STREQ(btf_type_raw_dump(btf, 7), 125 "[7] STRUCT 's1' size=8 vlen=2\n" 126 "\t'f1' type_id=1 bits_offset=0\n" 127 "\t'f2' type_id=1 bits_offset=32 bitfield_size=16", "raw_dump"); 128 129 /* UNION */ 130 id = btf__add_union(btf, "u1", 8); 131 ASSERT_EQ(id, 8, "union_id"); 132 133 /* invalid, non-zero offset */ 134 err = btf__add_field(btf, "field", 1, 1, 0); 135 ASSERT_ERR(err, "no_struct_field"); 136 137 err = btf__add_field(btf, "f1", 1, 0, 16); 138 ASSERT_OK(err, "f1_res"); 139 140 t = btf__type_by_id(btf, 8); 141 ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "u1", "union_name"); 142 ASSERT_EQ(btf_kind(t), BTF_KIND_UNION, "union_kind"); 143 ASSERT_EQ(btf_vlen(t), 1, "union_vlen"); 144 ASSERT_EQ(btf_kflag(t), true, "union_kflag"); 145 ASSERT_EQ(t->size, 8, "union_sz"); 146 m = btf_members(t) + 0; 147 ASSERT_STREQ(btf__str_by_offset(btf, m->name_off), "f1", "f1_name"); 148 ASSERT_EQ(m->type, 1, "f1_type"); 149 ASSERT_EQ(btf_member_bit_offset(t, 0), 0, "f1_bit_off"); 150 ASSERT_EQ(btf_member_bitfield_size(t, 0), 16, "f1_bit_sz"); 151 ASSERT_STREQ(btf_type_raw_dump(btf, 8), 152 "[8] UNION 'u1' size=8 vlen=1\n" 153 "\t'f1' type_id=1 bits_offset=0 bitfield_size=16", "raw_dump"); 154 155 /* ENUM */ 156 id = btf__add_enum(btf, "e1", 4); 157 ASSERT_EQ(id, 9, "enum_id"); 158 err = btf__add_enum_value(btf, "v1", 1); 159 ASSERT_OK(err, "v1_res"); 160 err = btf__add_enum_value(btf, "v2", 2); 161 ASSERT_OK(err, "v2_res"); 162 163 t = btf__type_by_id(btf, 9); 164 ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "e1", "enum_name"); 165 ASSERT_EQ(btf_kind(t), BTF_KIND_ENUM, "enum_kind"); 166 ASSERT_EQ(btf_vlen(t), 2, "enum_vlen"); 167 ASSERT_EQ(t->size, 4, "enum_sz"); 168 v = btf_enum(t) + 0; 169 ASSERT_STREQ(btf__str_by_offset(btf, v->name_off), "v1", "v1_name"); 170 ASSERT_EQ(v->val, 1, "v1_val"); 171 v = btf_enum(t) + 1; 172 ASSERT_STREQ(btf__str_by_offset(btf, v->name_off), "v2", "v2_name"); 173 ASSERT_EQ(v->val, 2, "v2_val"); 174 ASSERT_STREQ(btf_type_raw_dump(btf, 9), 175 "[9] ENUM 'e1' encoding=UNSIGNED size=4 vlen=2\n" 176 "\t'v1' val=1\n" 177 "\t'v2' val=2", "raw_dump"); 178 179 /* FWDs */ 180 id = btf__add_fwd(btf, "struct_fwd", BTF_FWD_STRUCT); 181 ASSERT_EQ(id, 10, "struct_fwd_id"); 182 t = btf__type_by_id(btf, 10); 183 ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "struct_fwd", "fwd_name"); 184 ASSERT_EQ(btf_kind(t), BTF_KIND_FWD, "fwd_kind"); 185 ASSERT_EQ(btf_kflag(t), 0, "fwd_kflag"); 186 ASSERT_STREQ(btf_type_raw_dump(btf, 10), 187 "[10] FWD 'struct_fwd' fwd_kind=struct", "raw_dump"); 188 189 id = btf__add_fwd(btf, "union_fwd", BTF_FWD_UNION); 190 ASSERT_EQ(id, 11, "union_fwd_id"); 191 t = btf__type_by_id(btf, 11); 192 ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "union_fwd", "fwd_name"); 193 ASSERT_EQ(btf_kind(t), BTF_KIND_FWD, "fwd_kind"); 194 ASSERT_EQ(btf_kflag(t), 1, "fwd_kflag"); 195 ASSERT_STREQ(btf_type_raw_dump(btf, 11), 196 "[11] FWD 'union_fwd' fwd_kind=union", "raw_dump"); 197 198 id = btf__add_fwd(btf, "enum_fwd", BTF_FWD_ENUM); 199 ASSERT_EQ(id, 12, "enum_fwd_id"); 200 t = btf__type_by_id(btf, 12); 201 ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "enum_fwd", "fwd_name"); 202 ASSERT_EQ(btf_kind(t), BTF_KIND_ENUM, "enum_fwd_kind"); 203 ASSERT_EQ(btf_vlen(t), 0, "enum_fwd_kind"); 204 ASSERT_EQ(t->size, 4, "enum_fwd_sz"); 205 ASSERT_STREQ(btf_type_raw_dump(btf, 12), 206 "[12] ENUM 'enum_fwd' encoding=UNSIGNED size=4 vlen=0", "raw_dump"); 207 208 /* TYPEDEF */ 209 id = btf__add_typedef(btf, "typedef1", 1); 210 ASSERT_EQ(id, 13, "typedef_fwd_id"); 211 t = btf__type_by_id(btf, 13); 212 ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "typedef1", "typedef_name"); 213 ASSERT_EQ(btf_kind(t), BTF_KIND_TYPEDEF, "typedef_kind"); 214 ASSERT_EQ(t->type, 1, "typedef_type"); 215 ASSERT_STREQ(btf_type_raw_dump(btf, 13), 216 "[13] TYPEDEF 'typedef1' type_id=1", "raw_dump"); 217 218 /* FUNC & FUNC_PROTO */ 219 id = btf__add_func(btf, "func1", BTF_FUNC_GLOBAL, 15); 220 ASSERT_EQ(id, 14, "func_id"); 221 t = btf__type_by_id(btf, 14); 222 ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "func1", "func_name"); 223 ASSERT_EQ(t->type, 15, "func_type"); 224 ASSERT_EQ(btf_kind(t), BTF_KIND_FUNC, "func_kind"); 225 ASSERT_EQ(btf_vlen(t), BTF_FUNC_GLOBAL, "func_vlen"); 226 ASSERT_STREQ(btf_type_raw_dump(btf, 14), 227 "[14] FUNC 'func1' type_id=15 linkage=global", "raw_dump"); 228 229 id = btf__add_func_proto(btf, 1); 230 ASSERT_EQ(id, 15, "func_proto_id"); 231 err = btf__add_func_param(btf, "p1", 1); 232 ASSERT_OK(err, "p1_res"); 233 err = btf__add_func_param(btf, "p2", 2); 234 ASSERT_OK(err, "p2_res"); 235 236 t = btf__type_by_id(btf, 15); 237 ASSERT_EQ(btf_kind(t), BTF_KIND_FUNC_PROTO, "func_proto_kind"); 238 ASSERT_EQ(btf_vlen(t), 2, "func_proto_vlen"); 239 ASSERT_EQ(t->type, 1, "func_proto_ret_type"); 240 p = btf_params(t) + 0; 241 ASSERT_STREQ(btf__str_by_offset(btf, p->name_off), "p1", "p1_name"); 242 ASSERT_EQ(p->type, 1, "p1_type"); 243 p = btf_params(t) + 1; 244 ASSERT_STREQ(btf__str_by_offset(btf, p->name_off), "p2", "p2_name"); 245 ASSERT_EQ(p->type, 2, "p2_type"); 246 ASSERT_STREQ(btf_type_raw_dump(btf, 15), 247 "[15] FUNC_PROTO '(anon)' ret_type_id=1 vlen=2\n" 248 "\t'p1' type_id=1\n" 249 "\t'p2' type_id=2", "raw_dump"); 250 251 /* VAR */ 252 id = btf__add_var(btf, "var1", BTF_VAR_GLOBAL_ALLOCATED, 1); 253 ASSERT_EQ(id, 16, "var_id"); 254 t = btf__type_by_id(btf, 16); 255 ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "var1", "var_name"); 256 ASSERT_EQ(btf_kind(t), BTF_KIND_VAR, "var_kind"); 257 ASSERT_EQ(t->type, 1, "var_type"); 258 ASSERT_EQ(btf_var(t)->linkage, BTF_VAR_GLOBAL_ALLOCATED, "var_type"); 259 ASSERT_STREQ(btf_type_raw_dump(btf, 16), 260 "[16] VAR 'var1' type_id=1, linkage=global-alloc", "raw_dump"); 261 262 /* DATASECT */ 263 id = btf__add_datasec(btf, "datasec1", 12); 264 ASSERT_EQ(id, 17, "datasec_id"); 265 err = btf__add_datasec_var_info(btf, 1, 4, 8); 266 ASSERT_OK(err, "v1_res"); 267 268 t = btf__type_by_id(btf, 17); 269 ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "datasec1", "datasec_name"); 270 ASSERT_EQ(t->size, 12, "datasec_sz"); 271 ASSERT_EQ(btf_kind(t), BTF_KIND_DATASEC, "datasec_kind"); 272 ASSERT_EQ(btf_vlen(t), 1, "datasec_vlen"); 273 vi = btf_var_secinfos(t) + 0; 274 ASSERT_EQ(vi->type, 1, "v1_type"); 275 ASSERT_EQ(vi->offset, 4, "v1_off"); 276 ASSERT_EQ(vi->size, 8, "v1_sz"); 277 ASSERT_STREQ(btf_type_raw_dump(btf, 17), 278 "[17] DATASEC 'datasec1' size=12 vlen=1\n" 279 "\ttype_id=1 offset=4 size=8", "raw_dump"); 280 281 /* DECL_TAG */ 282 id = btf__add_decl_tag(btf, "tag1", 16, -1); 283 ASSERT_EQ(id, 18, "tag_id"); 284 t = btf__type_by_id(btf, 18); 285 ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "tag1", "tag_value"); 286 ASSERT_EQ(btf_kind(t), BTF_KIND_DECL_TAG, "tag_kind"); 287 ASSERT_EQ(t->type, 16, "tag_type"); 288 ASSERT_EQ(btf_decl_tag(t)->component_idx, -1, "tag_component_idx"); 289 ASSERT_STREQ(btf_type_raw_dump(btf, 18), 290 "[18] DECL_TAG 'tag1' type_id=16 component_idx=-1", "raw_dump"); 291 292 id = btf__add_decl_tag(btf, "tag2", 14, 1); 293 ASSERT_EQ(id, 19, "tag_id"); 294 t = btf__type_by_id(btf, 19); 295 ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "tag2", "tag_value"); 296 ASSERT_EQ(btf_kind(t), BTF_KIND_DECL_TAG, "tag_kind"); 297 ASSERT_EQ(t->type, 14, "tag_type"); 298 ASSERT_EQ(btf_decl_tag(t)->component_idx, 1, "tag_component_idx"); 299 ASSERT_STREQ(btf_type_raw_dump(btf, 19), 300 "[19] DECL_TAG 'tag2' type_id=14 component_idx=1", "raw_dump"); 301 302 /* TYPE_TAG */ 303 id = btf__add_type_tag(btf, "tag1", 1); 304 ASSERT_EQ(id, 20, "tag_id"); 305 t = btf__type_by_id(btf, 20); 306 ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "tag1", "tag_value"); 307 ASSERT_EQ(btf_kind(t), BTF_KIND_TYPE_TAG, "tag_kind"); 308 ASSERT_EQ(t->type, 1, "tag_type"); 309 ASSERT_STREQ(btf_type_raw_dump(btf, 20), 310 "[20] TYPE_TAG 'tag1' type_id=1", "raw_dump"); 311 312 /* ENUM64 */ 313 id = btf__add_enum64(btf, "e1", 8, true); 314 ASSERT_EQ(id, 21, "enum64_id"); 315 err = btf__add_enum64_value(btf, "v1", -1); 316 ASSERT_OK(err, "v1_res"); 317 err = btf__add_enum64_value(btf, "v2", 0x123456789); /* 4886718345 */ 318 ASSERT_OK(err, "v2_res"); 319 t = btf__type_by_id(btf, 21); 320 ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "e1", "enum64_name"); 321 ASSERT_EQ(btf_kind(t), BTF_KIND_ENUM64, "enum64_kind"); 322 ASSERT_EQ(btf_vlen(t), 2, "enum64_vlen"); 323 ASSERT_EQ(t->size, 8, "enum64_sz"); 324 v64 = btf_enum64(t) + 0; 325 ASSERT_STREQ(btf__str_by_offset(btf, v64->name_off), "v1", "v1_name"); 326 ASSERT_EQ(v64->val_hi32, 0xffffffff, "v1_val"); 327 ASSERT_EQ(v64->val_lo32, 0xffffffff, "v1_val"); 328 v64 = btf_enum64(t) + 1; 329 ASSERT_STREQ(btf__str_by_offset(btf, v64->name_off), "v2", "v2_name"); 330 ASSERT_EQ(v64->val_hi32, 0x1, "v2_val"); 331 ASSERT_EQ(v64->val_lo32, 0x23456789, "v2_val"); 332 ASSERT_STREQ(btf_type_raw_dump(btf, 21), 333 "[21] ENUM64 'e1' encoding=SIGNED size=8 vlen=2\n" 334 "\t'v1' val=-1\n" 335 "\t'v2' val=4886718345", "raw_dump"); 336 337 id = btf__add_enum64(btf, "e1", 8, false); 338 ASSERT_EQ(id, 22, "enum64_id"); 339 err = btf__add_enum64_value(btf, "v1", 0xffffffffFFFFFFFF); /* 18446744073709551615 */ 340 ASSERT_OK(err, "v1_res"); 341 t = btf__type_by_id(btf, 22); 342 ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "e1", "enum64_name"); 343 ASSERT_EQ(btf_kind(t), BTF_KIND_ENUM64, "enum64_kind"); 344 ASSERT_EQ(btf_vlen(t), 1, "enum64_vlen"); 345 ASSERT_EQ(t->size, 8, "enum64_sz"); 346 v64 = btf_enum64(t) + 0; 347 ASSERT_STREQ(btf__str_by_offset(btf, v64->name_off), "v1", "v1_name"); 348 ASSERT_EQ(v64->val_hi32, 0xffffffff, "v1_val"); 349 ASSERT_EQ(v64->val_lo32, 0xffffffff, "v1_val"); 350 ASSERT_STREQ(btf_type_raw_dump(btf, 22), 351 "[22] ENUM64 'e1' encoding=UNSIGNED size=8 vlen=1\n" 352 "\t'v1' val=18446744073709551615", "raw_dump"); 353} 354 355static void test_btf_add() 356{ 357 struct btf *btf; 358 359 btf = btf__new_empty(); 360 if (!ASSERT_OK_PTR(btf, "new_empty")) 361 return; 362 363 gen_btf(btf); 364 365 VALIDATE_RAW_BTF( 366 btf, 367 "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", 368 "[2] PTR '(anon)' type_id=1", 369 "[3] CONST '(anon)' type_id=5", 370 "[4] VOLATILE '(anon)' type_id=3", 371 "[5] RESTRICT '(anon)' type_id=4", 372 "[6] ARRAY '(anon)' type_id=2 index_type_id=1 nr_elems=10", 373 "[7] STRUCT 's1' size=8 vlen=2\n" 374 "\t'f1' type_id=1 bits_offset=0\n" 375 "\t'f2' type_id=1 bits_offset=32 bitfield_size=16", 376 "[8] UNION 'u1' size=8 vlen=1\n" 377 "\t'f1' type_id=1 bits_offset=0 bitfield_size=16", 378 "[9] ENUM 'e1' encoding=UNSIGNED size=4 vlen=2\n" 379 "\t'v1' val=1\n" 380 "\t'v2' val=2", 381 "[10] FWD 'struct_fwd' fwd_kind=struct", 382 "[11] FWD 'union_fwd' fwd_kind=union", 383 "[12] ENUM 'enum_fwd' encoding=UNSIGNED size=4 vlen=0", 384 "[13] TYPEDEF 'typedef1' type_id=1", 385 "[14] FUNC 'func1' type_id=15 linkage=global", 386 "[15] FUNC_PROTO '(anon)' ret_type_id=1 vlen=2\n" 387 "\t'p1' type_id=1\n" 388 "\t'p2' type_id=2", 389 "[16] VAR 'var1' type_id=1, linkage=global-alloc", 390 "[17] DATASEC 'datasec1' size=12 vlen=1\n" 391 "\ttype_id=1 offset=4 size=8", 392 "[18] DECL_TAG 'tag1' type_id=16 component_idx=-1", 393 "[19] DECL_TAG 'tag2' type_id=14 component_idx=1", 394 "[20] TYPE_TAG 'tag1' type_id=1", 395 "[21] ENUM64 'e1' encoding=SIGNED size=8 vlen=2\n" 396 "\t'v1' val=-1\n" 397 "\t'v2' val=4886718345", 398 "[22] ENUM64 'e1' encoding=UNSIGNED size=8 vlen=1\n" 399 "\t'v1' val=18446744073709551615"); 400 401 btf__free(btf); 402} 403 404static void test_btf_add_btf() 405{ 406 struct btf *btf1 = NULL, *btf2 = NULL; 407 int id; 408 409 btf1 = btf__new_empty(); 410 if (!ASSERT_OK_PTR(btf1, "btf1")) 411 return; 412 413 btf2 = btf__new_empty(); 414 if (!ASSERT_OK_PTR(btf2, "btf2")) 415 goto cleanup; 416 417 gen_btf(btf1); 418 gen_btf(btf2); 419 420 id = btf__add_btf(btf1, btf2); 421 if (!ASSERT_EQ(id, 23, "id")) 422 goto cleanup; 423 424 VALIDATE_RAW_BTF( 425 btf1, 426 "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", 427 "[2] PTR '(anon)' type_id=1", 428 "[3] CONST '(anon)' type_id=5", 429 "[4] VOLATILE '(anon)' type_id=3", 430 "[5] RESTRICT '(anon)' type_id=4", 431 "[6] ARRAY '(anon)' type_id=2 index_type_id=1 nr_elems=10", 432 "[7] STRUCT 's1' size=8 vlen=2\n" 433 "\t'f1' type_id=1 bits_offset=0\n" 434 "\t'f2' type_id=1 bits_offset=32 bitfield_size=16", 435 "[8] UNION 'u1' size=8 vlen=1\n" 436 "\t'f1' type_id=1 bits_offset=0 bitfield_size=16", 437 "[9] ENUM 'e1' encoding=UNSIGNED size=4 vlen=2\n" 438 "\t'v1' val=1\n" 439 "\t'v2' val=2", 440 "[10] FWD 'struct_fwd' fwd_kind=struct", 441 "[11] FWD 'union_fwd' fwd_kind=union", 442 "[12] ENUM 'enum_fwd' encoding=UNSIGNED size=4 vlen=0", 443 "[13] TYPEDEF 'typedef1' type_id=1", 444 "[14] FUNC 'func1' type_id=15 linkage=global", 445 "[15] FUNC_PROTO '(anon)' ret_type_id=1 vlen=2\n" 446 "\t'p1' type_id=1\n" 447 "\t'p2' type_id=2", 448 "[16] VAR 'var1' type_id=1, linkage=global-alloc", 449 "[17] DATASEC 'datasec1' size=12 vlen=1\n" 450 "\ttype_id=1 offset=4 size=8", 451 "[18] DECL_TAG 'tag1' type_id=16 component_idx=-1", 452 "[19] DECL_TAG 'tag2' type_id=14 component_idx=1", 453 "[20] TYPE_TAG 'tag1' type_id=1", 454 "[21] ENUM64 'e1' encoding=SIGNED size=8 vlen=2\n" 455 "\t'v1' val=-1\n" 456 "\t'v2' val=4886718345", 457 "[22] ENUM64 'e1' encoding=UNSIGNED size=8 vlen=1\n" 458 "\t'v1' val=18446744073709551615", 459 460 /* types appended from the second BTF */ 461 "[23] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", 462 "[24] PTR '(anon)' type_id=23", 463 "[25] CONST '(anon)' type_id=27", 464 "[26] VOLATILE '(anon)' type_id=25", 465 "[27] RESTRICT '(anon)' type_id=26", 466 "[28] ARRAY '(anon)' type_id=24 index_type_id=23 nr_elems=10", 467 "[29] STRUCT 's1' size=8 vlen=2\n" 468 "\t'f1' type_id=23 bits_offset=0\n" 469 "\t'f2' type_id=23 bits_offset=32 bitfield_size=16", 470 "[30] UNION 'u1' size=8 vlen=1\n" 471 "\t'f1' type_id=23 bits_offset=0 bitfield_size=16", 472 "[31] ENUM 'e1' encoding=UNSIGNED size=4 vlen=2\n" 473 "\t'v1' val=1\n" 474 "\t'v2' val=2", 475 "[32] FWD 'struct_fwd' fwd_kind=struct", 476 "[33] FWD 'union_fwd' fwd_kind=union", 477 "[34] ENUM 'enum_fwd' encoding=UNSIGNED size=4 vlen=0", 478 "[35] TYPEDEF 'typedef1' type_id=23", 479 "[36] FUNC 'func1' type_id=37 linkage=global", 480 "[37] FUNC_PROTO '(anon)' ret_type_id=23 vlen=2\n" 481 "\t'p1' type_id=23\n" 482 "\t'p2' type_id=24", 483 "[38] VAR 'var1' type_id=23, linkage=global-alloc", 484 "[39] DATASEC 'datasec1' size=12 vlen=1\n" 485 "\ttype_id=23 offset=4 size=8", 486 "[40] DECL_TAG 'tag1' type_id=38 component_idx=-1", 487 "[41] DECL_TAG 'tag2' type_id=36 component_idx=1", 488 "[42] TYPE_TAG 'tag1' type_id=23", 489 "[43] ENUM64 'e1' encoding=SIGNED size=8 vlen=2\n" 490 "\t'v1' val=-1\n" 491 "\t'v2' val=4886718345", 492 "[44] ENUM64 'e1' encoding=UNSIGNED size=8 vlen=1\n" 493 "\t'v1' val=18446744073709551615"); 494 495cleanup: 496 btf__free(btf1); 497 btf__free(btf2); 498} 499 500void test_btf_write() 501{ 502 if (test__start_subtest("btf_add")) 503 test_btf_add(); 504 if (test__start_subtest("btf_add_btf")) 505 test_btf_add_btf(); 506} 507