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
gen_btf(struct btf * btf)7 static 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
test_btf_add()355 static 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
test_btf_add_btf()404 static 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
495 cleanup:
496 btf__free(btf1);
497 btf__free(btf2);
498 }
499
test_btf_write()500 void 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