Commit | Line | Data |
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9bc898c7 WN |
1 | #include <stdio.h> |
2 | #include <bpf/libbpf.h> | |
3 | #include <util/llvm-utils.h> | |
4 | #include <util/cache.h> | |
b31de018 | 5 | #include "llvm.h" |
9bc898c7 WN |
6 | #include "tests.h" |
7 | #include "debug.h" | |
8 | ||
9bc898c7 WN |
9 | #ifdef HAVE_LIBBPF_SUPPORT |
10 | static int test__bpf_parsing(void *obj_buf, size_t obj_buf_sz) | |
11 | { | |
12 | struct bpf_object *obj; | |
13 | ||
acf860ae | 14 | obj = bpf_object__open_buffer(obj_buf, obj_buf_sz, NULL); |
6371ca3b | 15 | if (IS_ERR(obj)) |
b31de018 | 16 | return TEST_FAIL; |
9bc898c7 | 17 | bpf_object__close(obj); |
b31de018 | 18 | return TEST_OK; |
9bc898c7 WN |
19 | } |
20 | #else | |
21 | static int test__bpf_parsing(void *obj_buf __maybe_unused, | |
22 | size_t obj_buf_sz __maybe_unused) | |
23 | { | |
597bdeb4 | 24 | pr_debug("Skip bpf parsing\n"); |
b31de018 | 25 | return TEST_OK; |
9bc898c7 WN |
26 | } |
27 | #endif | |
28 | ||
b31de018 WN |
29 | static struct { |
30 | const char *source; | |
31 | const char *desc; | |
7b6982ce | 32 | bool should_load_fail; |
b31de018 WN |
33 | } bpf_source_table[__LLVM_TESTCASE_MAX] = { |
34 | [LLVM_TESTCASE_BASE] = { | |
35 | .source = test_llvm__bpf_base_prog, | |
36 | .desc = "Basic BPF llvm compiling test", | |
37 | }, | |
7af3f3d5 WN |
38 | [LLVM_TESTCASE_KBUILD] = { |
39 | .source = test_llvm__bpf_test_kbuild_prog, | |
40 | .desc = "Test kbuild searching", | |
41 | }, | |
bbb7d492 WN |
42 | [LLVM_TESTCASE_BPF_PROLOGUE] = { |
43 | .source = test_llvm__bpf_test_prologue_prog, | |
e8c6d500 | 44 | .desc = "Compile source for BPF prologue generation test", |
bbb7d492 | 45 | }, |
7b6982ce WN |
46 | [LLVM_TESTCASE_BPF_RELOCATION] = { |
47 | .source = test_llvm__bpf_test_relocation, | |
48 | .desc = "Compile source for BPF relocation test", | |
49 | .should_load_fail = true, | |
50 | }, | |
b31de018 WN |
51 | }; |
52 | ||
b31de018 WN |
53 | int |
54 | test_llvm__fetch_bpf_obj(void **p_obj_buf, | |
55 | size_t *p_obj_buf_sz, | |
916d4092 | 56 | enum test_llvm__testcase idx, |
7b6982ce WN |
57 | bool force, |
58 | bool *should_load_fail) | |
9bc898c7 | 59 | { |
b31de018 WN |
60 | const char *source; |
61 | const char *desc; | |
62 | const char *tmpl_old, *clang_opt_old; | |
63 | char *tmpl_new = NULL, *clang_opt_new = NULL; | |
64 | int err, old_verbose, ret = TEST_FAIL; | |
65 | ||
916d4092 | 66 | if (idx >= __LLVM_TESTCASE_MAX) |
b31de018 WN |
67 | return TEST_FAIL; |
68 | ||
916d4092 ACM |
69 | source = bpf_source_table[idx].source; |
70 | desc = bpf_source_table[idx].desc; | |
7b6982ce WN |
71 | if (should_load_fail) |
72 | *should_load_fail = bpf_source_table[idx].should_load_fail; | |
9bc898c7 | 73 | |
9bc898c7 WN |
74 | /* |
75 | * Skip this test if user's .perfconfig doesn't set [llvm] section | |
76 | * and clang is not found in $PATH, and this is not perf test -v | |
77 | */ | |
b31de018 WN |
78 | if (!force && (verbose == 0 && |
79 | !llvm_param.user_set_param && | |
80 | llvm__search_clang())) { | |
597bdeb4 | 81 | pr_debug("No clang and no verbosive, skip this test\n"); |
9bc898c7 WN |
82 | return TEST_SKIP; |
83 | } | |
84 | ||
9bc898c7 WN |
85 | /* |
86 | * llvm is verbosity when error. Suppress all error output if | |
87 | * not 'perf test -v'. | |
88 | */ | |
b31de018 | 89 | old_verbose = verbose; |
9bc898c7 WN |
90 | if (verbose == 0) |
91 | verbose = -1; | |
92 | ||
b31de018 WN |
93 | *p_obj_buf = NULL; |
94 | *p_obj_buf_sz = 0; | |
95 | ||
9bc898c7 | 96 | if (!llvm_param.clang_bpf_cmd_template) |
b31de018 | 97 | goto out; |
9bc898c7 WN |
98 | |
99 | if (!llvm_param.clang_opt) | |
100 | llvm_param.clang_opt = strdup(""); | |
101 | ||
b31de018 WN |
102 | err = asprintf(&tmpl_new, "echo '%s' | %s%s", source, |
103 | llvm_param.clang_bpf_cmd_template, | |
104 | old_verbose ? "" : " 2>/dev/null"); | |
9bc898c7 | 105 | if (err < 0) |
b31de018 | 106 | goto out; |
9bc898c7 WN |
107 | err = asprintf(&clang_opt_new, "-xc %s", llvm_param.clang_opt); |
108 | if (err < 0) | |
b31de018 | 109 | goto out; |
9bc898c7 | 110 | |
b31de018 | 111 | tmpl_old = llvm_param.clang_bpf_cmd_template; |
9bc898c7 | 112 | llvm_param.clang_bpf_cmd_template = tmpl_new; |
b31de018 | 113 | clang_opt_old = llvm_param.clang_opt; |
9bc898c7 | 114 | llvm_param.clang_opt = clang_opt_new; |
b31de018 WN |
115 | |
116 | err = llvm__compile_bpf("-", p_obj_buf, p_obj_buf_sz); | |
117 | ||
118 | llvm_param.clang_bpf_cmd_template = tmpl_old; | |
119 | llvm_param.clang_opt = clang_opt_old; | |
9bc898c7 WN |
120 | |
121 | verbose = old_verbose; | |
597bdeb4 | 122 | if (err) |
b31de018 WN |
123 | goto out; |
124 | ||
125 | ret = TEST_OK; | |
126 | out: | |
127 | free(tmpl_new); | |
128 | free(clang_opt_new); | |
129 | if (ret != TEST_OK) | |
130 | pr_debug("Failed to compile test case: '%s'\n", desc); | |
131 | return ret; | |
132 | } | |
9bc898c7 | 133 | |
e8c6d500 | 134 | int test__llvm(int subtest) |
b31de018 | 135 | { |
e8c6d500 WN |
136 | int ret; |
137 | void *obj_buf = NULL; | |
138 | size_t obj_buf_sz = 0; | |
7b6982ce | 139 | bool should_load_fail = false; |
b31de018 | 140 | |
e8c6d500 WN |
141 | if ((subtest < 0) || (subtest >= __LLVM_TESTCASE_MAX)) |
142 | return TEST_FAIL; | |
b31de018 | 143 | |
e8c6d500 | 144 | ret = test_llvm__fetch_bpf_obj(&obj_buf, &obj_buf_sz, |
7b6982ce | 145 | subtest, false, &should_load_fail); |
b31de018 | 146 | |
7b6982ce | 147 | if (ret == TEST_OK && !should_load_fail) { |
e8c6d500 WN |
148 | ret = test__bpf_parsing(obj_buf, obj_buf_sz); |
149 | if (ret != TEST_OK) { | |
150 | pr_debug("Failed to parse test case '%s'\n", | |
151 | bpf_source_table[subtest].desc); | |
b31de018 WN |
152 | } |
153 | } | |
e8c6d500 WN |
154 | free(obj_buf); |
155 | ||
156 | return ret; | |
157 | } | |
158 | ||
159 | int test__llvm_subtest_get_nr(void) | |
160 | { | |
161 | return __LLVM_TESTCASE_MAX; | |
162 | } | |
163 | ||
164 | const char *test__llvm_subtest_get_desc(int subtest) | |
165 | { | |
166 | if ((subtest < 0) || (subtest >= __LLVM_TESTCASE_MAX)) | |
167 | return NULL; | |
168 | ||
169 | return bpf_source_table[subtest].desc; | |
9bc898c7 | 170 | } |