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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 | // SPDX-License-Identifier: GPL-2.0 #include <linux/compiler.h> #include <linux/string.h> #include <sys/mman.h> #include <limits.h> #include "debug.h" #include "dso.h" #include "machine.h" #include "thread.h" #include "symbol.h" #include "map.h" #include "util.h" #include "tests.h" struct test_info { struct machine *machine; struct thread *thread; }; static int init_test_info(struct test_info *ti) { ti->machine = machine__new_host(); if (!ti->machine) { pr_debug("machine__new_host() failed!\n"); return TEST_FAIL; } /* Create a dummy thread */ ti->thread = machine__findnew_thread(ti->machine, 100, 100); if (!ti->thread) { pr_debug("machine__findnew_thread() failed!\n"); return TEST_FAIL; } return TEST_OK; } static void exit_test_info(struct test_info *ti) { thread__put(ti->thread); machine__delete(ti->machine); } static void get_test_dso_filename(char *filename, size_t max_sz) { if (dso_to_test) strlcpy(filename, dso_to_test, max_sz); else perf_exe(filename, max_sz); } static int create_map(struct test_info *ti, char *filename, struct map **map_p) { /* Create a dummy map at 0x100000 */ *map_p = map__new(ti->machine, 0x100000, 0xffffffff, 0, NULL, PROT_EXEC, 0, NULL, filename, ti->thread); if (!*map_p) { pr_debug("Failed to create map!"); return TEST_FAIL; } return TEST_OK; } static int test_dso(struct dso *dso) { struct symbol *last_sym = NULL; struct rb_node *nd; int ret = TEST_OK; /* dso__fprintf() prints all the symbols */ if (verbose > 1) dso__fprintf(dso, stderr); for (nd = rb_first_cached(&dso->symbols); nd; nd = rb_next(nd)) { struct symbol *sym = rb_entry(nd, struct symbol, rb_node); if (sym->type != STT_FUNC && sym->type != STT_GNU_IFUNC) continue; /* Check for overlapping function symbols */ if (last_sym && sym->start < last_sym->end) { pr_debug("Overlapping symbols:\n"); symbol__fprintf(last_sym, stderr); symbol__fprintf(sym, stderr); ret = TEST_FAIL; } /* Check for zero-length function symbol */ if (sym->start == sym->end) { pr_debug("Zero-length symbol:\n"); symbol__fprintf(sym, stderr); ret = TEST_FAIL; } last_sym = sym; } return ret; } static int test_file(struct test_info *ti, char *filename) { struct map *map = NULL; int ret, nr; struct dso *dso; pr_debug("Testing %s\n", filename); ret = create_map(ti, filename, &map); if (ret != TEST_OK) return ret; dso = map__dso(map); nr = dso__load(dso, map); if (nr < 0) { pr_debug("dso__load() failed!\n"); ret = TEST_FAIL; goto out_put; } if (nr == 0) { pr_debug("DSO has no symbols!\n"); ret = TEST_SKIP; goto out_put; } ret = test_dso(dso); out_put: map__put(map); return ret; } static int test__symbols(struct test_suite *test __maybe_unused, int subtest __maybe_unused) { char filename[PATH_MAX]; struct test_info ti; int ret; ret = init_test_info(&ti); if (ret != TEST_OK) return ret; get_test_dso_filename(filename, sizeof(filename)); ret = test_file(&ti, filename); exit_test_info(&ti); return ret; } DEFINE_SUITE("Symbols", symbols); |