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b811d2c2 | 1 | # Copyright (C) 2012-2020 Free Software Foundation, Inc. |
62e5f89c SDJ |
2 | |
3 | # This program is free software; you can redistribute it and/or modify | |
4 | # it under the terms of the GNU General Public License as published by | |
5 | # the Free Software Foundation; either version 3 of the License, or | |
6 | # (at your option) any later version. | |
7 | # | |
8 | # This program is distributed in the hope that it will be useful, | |
9 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | # GNU General Public License for more details. | |
12 | # | |
13 | # You should have received a copy of the GNU General Public License | |
14 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
15 | ||
0ab77f5f | 16 | standard_testfile |
62e5f89c SDJ |
17 | |
18 | # Run the tests. We run the tests two different ways: once with a | |
19 | # plain probe, and once with a probe that has an associated semaphore. | |
20 | # This returns -1 on failure to compile or start, 0 otherwise. | |
7f0ae84c | 21 | proc stap_test {exec_name {args ""}} { |
0ab77f5f | 22 | global testfile hex srcfile |
62e5f89c | 23 | |
5b362f04 | 24 | if {[prepare_for_testing "failed to prepare" ${exec_name} $srcfile \ |
7f0ae84c | 25 | [concat $args debug]]} { |
62e5f89c SDJ |
26 | return -1 |
27 | } | |
28 | ||
7f0ae84c GB |
29 | set semaphore_addr_var "" |
30 | if {[string first "-DUSE_SEMAPHORES" $args] == -1} { | |
31 | gdb_test_no_output "set breakpoint always-inserted on" | |
32 | set semaphore_addr_var [get_hexadecimal_valueof "&relocation_marker" "0"] | |
33 | } | |
34 | ||
62e5f89c SDJ |
35 | if ![runto_main] { |
36 | return -1 | |
37 | } | |
38 | ||
03e98035 | 39 | gdb_test "print \$_probe_argc" "No probe at PC $hex" \ |
62e5f89c SDJ |
40 | "check argument not at probe point" |
41 | ||
7f0ae84c | 42 | if {[string first "-DUSE_SEMAPHORES" $args] != -1} { |
47e9d49d GB |
43 | gdb_test "info probes stap" \ |
44 | "test *user *$hex *$hex .*" | |
45 | } else { | |
46 | gdb_test "info probes stap" \ | |
47 | "test *user *$hex .*" | |
48 | } | |
49 | ||
62e5f89c SDJ |
50 | if {[runto "-pstap test:user"]} { |
51 | pass "run to -pstap test:user" | |
52 | } else { | |
53 | fail "run to -pstap test:user" | |
54 | } | |
55 | ||
7f0ae84c GB |
56 | if {[string first "-DUSE_SEMAPHORES" $args] == -1} { |
57 | set relocation_base \ | |
58 | [expr [get_hexadecimal_valueof "&relocation_marker" "0"] - $semaphore_addr_var] | |
59 | if {$relocation_base != 0} { | |
60 | # Checks that GDB doesn't mistakenly relocate and write to null | |
61 | # semaphore addresses. If it were to relocate a zero-valued | |
62 | # semaphore address and increment the value at that address, we | |
63 | # would expect to see "\200ELF" here instead. | |
64 | gdb_test "p (*(char*) $relocation_base)@4" \ | |
65 | " = \"\\\\177ELF\"" \ | |
66 | "null semaphore relocation" | |
67 | } | |
68 | } | |
69 | ||
62e5f89c SDJ |
70 | # Test probe arguments. |
71 | gdb_test "print \$_probe_argc" " = 1" \ | |
72 | "print \$_probe_argc for probe user" | |
73 | gdb_test "print \$_probe_arg0 == x" " = 1" \ | |
74 | "check \$_probe_arg0 for probe user" | |
75 | gdb_test "print \$_probe_arg1" \ | |
76 | "Invalid probe argument 1 -- probe has 1 arguments available" \ | |
77 | "check \$_probe_arg1 for probe user" | |
78 | ||
79 | # Set a breakpoint with multiple probe locations. | |
80 | gdb_test "break -pstap test:two" \ | |
81 | "Breakpoint \[0-9\]+ at $hex.*2 locations.*" \ | |
82 | "set multi-location probe breakpoint (probe two)" | |
83 | ||
84 | # Reinit GDB, set a breakpoint on probe m4. | |
85 | delete_breakpoints | |
62e5f89c SDJ |
86 | if {[runto "-pstap test:m4"]} { |
87 | pass "run to -pstap test:m4" | |
88 | } else { | |
89 | fail "run to -pstap test:m4" | |
90 | } | |
91 | ||
92 | # Testing probe arguments. | |
93 | gdb_test "print \$_probe_argc" " = 3" \ | |
94 | "print \$_probe_argc for probe m4" | |
95 | gdb_test "print \$_probe_arg0" " = 42" \ | |
96 | "check \$_probe_arg0 for probe m4" | |
97 | gdb_test "print (const char *) \$_probe_arg1" \ | |
98 | " = $hex .This is a test message.*" \ | |
99 | "check \$_probe_arg1 for probe m4" | |
100 | gdb_test "print \$_probe_arg2 == v" " = 1" \ | |
101 | "check \$_probe_arg2 for probe m4" | |
102 | ||
103 | # Reinit GDB, set a breakpoint on probe ps. | |
104 | delete_breakpoints | |
62e5f89c SDJ |
105 | if {[runto "-pstap test:ps"]} { |
106 | pass "run to -pstap test:m4" | |
107 | } else { | |
108 | fail "run to -pstap test:m4" | |
109 | } | |
110 | ||
111 | gdb_test "print \$_probe_argc" " = 3" \ | |
112 | "print \$_probe_argc for probe ps" | |
113 | gdb_test "print (const char *) \$_probe_arg1" \ | |
114 | " = $hex .This is another test message.*" \ | |
115 | "print \$_probe_arg1 for probe ps" | |
116 | ||
117 | return 0 | |
118 | } | |
119 | ||
7f0ae84c | 120 | proc stap_test_no_debuginfo {exec_name {args ""}} { |
62e5f89c SDJ |
121 | global testfile hex |
122 | ||
5b362f04 | 123 | if {[prepare_for_testing "failed to prepare" ${exec_name} ${testfile}.c \ |
7f0ae84c | 124 | [concat $args nodebug optimize=-O2]]} { |
62e5f89c SDJ |
125 | return -1 |
126 | } | |
127 | ||
128 | if {[runto "-pstap test:user"]} { | |
129 | pass "run to -pstap test:user" | |
130 | } else { | |
131 | fail "run to -pstap test:user" | |
132 | } | |
133 | ||
134 | # Test probe arguments. | |
135 | gdb_test "print \$_probe_argc" " = 1" \ | |
136 | "print \$_probe_argc for probe user" | |
137 | gdb_test "print \$_probe_arg0 == 23" " = 1" \ | |
138 | "check \$_probe_arg0 for probe user" | |
139 | gdb_test "print \$_probe_arg1" \ | |
140 | "Invalid probe argument 1 -- probe has 1 arguments available" \ | |
141 | "check \$_probe_arg1 for probe user" | |
142 | ||
143 | # Set a breakpoint with multiple probe locations. | |
144 | # In this scenario, we may expect more than 2 locations because of | |
145 | # the optimizations (inlining, loop unrolling, etc). | |
146 | gdb_test "break -pstap test:two" \ | |
147 | "Breakpoint .* at $hex.*\[0-9\]+ locations.*" \ | |
148 | "set multi-location probe breakpoint (probe two)" | |
149 | ||
150 | # Reinit GDB, set a breakpoint on probe m4. | |
151 | delete_breakpoints | |
62e5f89c SDJ |
152 | if {[runto "-pstap test:m4"]} { |
153 | pass "run to -pstap test:m4" | |
154 | } else { | |
155 | fail "run to -pstap test:m4" | |
156 | } | |
157 | ||
158 | # Testing probe arguments. | |
159 | gdb_test "print \$_probe_argc" " = 3" \ | |
160 | "print \$_probe_argc for probe m4" | |
161 | gdb_test "print \$_probe_arg0" " = 42" \ | |
162 | "check \$_probe_arg0 for probe m4" | |
163 | gdb_test "print (const char *) \$_probe_arg1" \ | |
164 | " = $hex .This is a test message.*" \ | |
165 | "check \$_probe_arg1 for probe m4" | |
166 | gdb_test "print \$_probe_arg2 == 0" " = 1" \ | |
167 | "check \$_probe_arg2 for probe m4" | |
168 | ||
169 | # Reinit GDB, set a breakpoint on probe ps. | |
170 | delete_breakpoints | |
62e5f89c SDJ |
171 | if {[runto "-pstap test:ps"]} { |
172 | pass "run to -pstap test:m4" | |
173 | } else { | |
174 | fail "run to -pstap test:m4" | |
175 | } | |
176 | ||
177 | gdb_test "print \$_probe_argc" " = 3" \ | |
178 | "print \$_probe_argc for probe ps" | |
179 | gdb_test "print (const char *) \$_probe_arg1" \ | |
180 | " = $hex .This is another test message.*" \ | |
181 | "print \$_probe_arg1 for probe ps" | |
182 | ||
183 | return 0 | |
184 | } | |
185 | ||
186 | with_test_prefix "without semaphore, not optimized" { | |
187 | if {[stap_test "stap-probe-nosem-noopt"] == -1} { | |
5b362f04 | 188 | untested "stap probe test failed" |
62e5f89c SDJ |
189 | return -1 |
190 | } | |
7f0ae84c GB |
191 | |
192 | foreach_with_prefix pie { "nopie" "pie" } { | |
193 | stap_test "stap-probe-nosem-noopt-$pie" $pie | |
194 | } | |
62e5f89c SDJ |
195 | } |
196 | ||
197 | with_test_prefix "with semaphore, not optimized" { | |
7f0ae84c | 198 | stap_test "stap-probe-sem-noopt" additional_flags=-DUSE_SEMAPHORES |
62e5f89c SDJ |
199 | } |
200 | ||
201 | with_test_prefix "without semaphore, optimized" { | |
202 | stap_test_no_debuginfo "stap-probe-nosem-opt" | |
203 | } | |
204 | ||
205 | with_test_prefix "with semaphore, optimized" { | |
7f0ae84c | 206 | stap_test_no_debuginfo "stap-probe-sem-opt" additional_flags=-DUSE_SEMAPHORES |
62e5f89c | 207 | } |