1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/compiler.h>
3 #include <linux/string.h>
16 struct machine *machine;
17 struct thread *thread;
20 static int init_test_info(struct test_info *ti)
22 ti->machine = machine__new_host();
24 pr_debug("machine__new_host() failed!\n");
28 /* Create a dummy thread */
29 ti->thread = machine__findnew_thread(ti->machine, 100, 100);
31 pr_debug("machine__findnew_thread() failed!\n");
38 static void exit_test_info(struct test_info *ti)
40 thread__put(ti->thread);
41 machine__delete(ti->machine);
49 static int find_map_cb(struct map *map, void *d)
51 struct dso_map *data = d;
53 if (map__dso(map) != data->dso)
59 static struct map *find_module_map(struct machine *machine, struct dso *dso)
61 struct dso_map data = { .dso = dso };
63 machine__for_each_kernel_map(machine, find_map_cb, &data);
68 static void get_test_dso_filename(char *filename, size_t max_sz)
71 strlcpy(filename, dso_to_test, max_sz);
73 perf_exe(filename, max_sz);
76 static int create_map(struct test_info *ti, char *filename, struct map **map_p)
78 struct dso *dso = machine__findnew_dso(ti->machine, filename);
81 * If 'filename' matches a current kernel module, must use a kernel
82 * map. Find the one that already exists.
84 if (dso && dso->kernel) {
85 *map_p = find_module_map(ti->machine, dso);
88 pr_debug("Failed to find map for curent kernel module %s",
98 /* Create a dummy map at 0x100000 */
99 *map_p = map__new(ti->machine, 0x100000, 0xffffffff, 0, NULL,
100 PROT_EXEC, 0, NULL, filename, ti->thread);
102 pr_debug("Failed to create map!");
109 static int test_dso(struct dso *dso)
111 struct symbol *last_sym = NULL;
115 /* dso__fprintf() prints all the symbols */
117 dso__fprintf(dso, stderr);
119 for (nd = rb_first_cached(&dso->symbols); nd; nd = rb_next(nd)) {
120 struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
122 if (sym->type != STT_FUNC && sym->type != STT_GNU_IFUNC)
125 /* Check for overlapping function symbols */
126 if (last_sym && sym->start < last_sym->end) {
127 pr_debug("Overlapping symbols:\n");
128 symbol__fprintf(last_sym, stderr);
129 symbol__fprintf(sym, stderr);
132 /* Check for zero-length function symbol */
133 if (sym->start == sym->end) {
134 pr_debug("Zero-length symbol:\n");
135 symbol__fprintf(sym, stderr);
144 static int subdivided_dso_cb(struct dso *dso, struct machine *machine __maybe_unused, void *d)
146 struct dso *text_dso = d;
148 if (dso != text_dso && strstarts(dso->short_name, text_dso->short_name))
149 if (test_dso(dso) != TEST_OK)
155 static int process_subdivided_dso(struct machine *machine, struct dso *dso)
159 ret = machine__for_each_dso(machine, subdivided_dso_cb, dso);
161 return ret < 0 ? TEST_FAIL : TEST_OK;
164 static int test_file(struct test_info *ti, char *filename)
166 struct map *map = NULL;
170 pr_debug("Testing %s\n", filename);
172 ret = create_map(ti, filename, &map);
177 nr = dso__load(dso, map);
179 pr_debug("dso__load() failed!\n");
185 pr_debug("DSO has no symbols!\n");
192 /* Module dso is split into many dsos by section */
193 if (ret == TEST_OK && dso->kernel)
194 ret = process_subdivided_dso(ti->machine, dso);
201 static int test__symbols(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
203 char filename[PATH_MAX];
207 ret = init_test_info(&ti);
211 get_test_dso_filename(filename, sizeof(filename));
213 ret = test_file(&ti, filename);
220 DEFINE_SUITE("Symbols", symbols);