gdb/testsuite/gdb.base/stap-probe.exp

   1 # Copyright (C) 2012-2019 Free Software Foundation, Inc.
   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
  16 standard_testfile
  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.
  21 proc stap_test {exec_name {arg ""}} {
  22     global testfile hex srcfile
  23
  24     if {[prepare_for_testing "failed to prepare" ${exec_name} $srcfile \
  25            [concat $arg debug]]} {
  26         return -1
  27     }
  28
  29     if ![runto_main] {
  30         return -1
  31     }
  32
  33     gdb_test "print \$_probe_argc" "No probe at PC $hex" \
  34         "check argument not at probe point"
  35
  36     gdb_test "info probes stap" \
  37         "test *user *$hex .*" \
  38         "info probes stap"
  39
  40     if {[runto "-pstap test:user"]} {
  41         pass "run to -pstap test:user"
  42     } else {
  43         fail "run to -pstap test:user"
  44     }
  45
  46     # Test probe arguments.
  47     gdb_test "print \$_probe_argc" " = 1" \
  48     "print \$_probe_argc for probe user"
  49     gdb_test "print \$_probe_arg0 == x" " = 1" \
  50     "check \$_probe_arg0 for probe user"
  51     gdb_test "print \$_probe_arg1" \
  52         "Invalid probe argument 1 -- probe has 1 arguments available" \
  53         "check \$_probe_arg1 for probe user"
  54
  55     # Set a breakpoint with multiple probe locations.
  56     gdb_test "break -pstap test:two" \
  57         "Breakpoint \[0-9\]+ at $hex.*2 locations.*" \
  58         "set multi-location probe breakpoint (probe two)"
  59
  60     # Reinit GDB, set a breakpoint on probe m4.
  61     delete_breakpoints
  62     if {[runto "-pstap test:m4"]} {
  63       pass "run to -pstap test:m4"
  64     } else {
  65       fail "run to -pstap test:m4"
  66     }
  67
  68     # Testing probe arguments.
  69     gdb_test "print \$_probe_argc" " = 3" \
  70     "print \$_probe_argc for probe m4"
  71     gdb_test "print \$_probe_arg0" " = 42" \
  72     "check \$_probe_arg0 for probe m4"
  73     gdb_test "print (const char *) \$_probe_arg1" \
  74     " = $hex .This is a test message.*" \
  75     "check \$_probe_arg1 for probe m4"
  76     gdb_test "print \$_probe_arg2 == v" " = 1" \
  77     "check \$_probe_arg2 for probe m4"
  78
  79     # Reinit GDB, set a breakpoint on probe ps.
  80     delete_breakpoints
  81     if {[runto "-pstap test:ps"]} {
  82       pass "run to -pstap test:m4"
  83     } else {
  84       fail "run to -pstap test:m4"
  85     }
  86
  87     gdb_test "print \$_probe_argc" " = 3" \
  88     "print \$_probe_argc for probe ps"
  89     gdb_test "print (const char *) \$_probe_arg1" \
  90     " = $hex .This is another test message.*" \
  91     "print \$_probe_arg1 for probe ps"
  92
  93     return 0
  94 }
  95
  96 proc stap_test_no_debuginfo {exec_name {arg ""}} {
  97     global testfile hex
  98
  99     if {[prepare_for_testing "failed to prepare" ${exec_name} ${testfile}.c \
 100            {$arg nodebug optimize=-O2}]} {
 101         return -1
 102     }
 103
 104     if {[runto "-pstap test:user"]} {
 105         pass "run to -pstap test:user"
 106     } else {
 107         fail "run to -pstap test:user"
 108     }
 109
 110     # Test probe arguments.
 111     gdb_test "print \$_probe_argc" " = 1" \
 112     "print \$_probe_argc for probe user"
 113     gdb_test "print \$_probe_arg0 == 23" " = 1" \
 114     "check \$_probe_arg0 for probe user"
 115     gdb_test "print \$_probe_arg1" \
 116         "Invalid probe argument 1 -- probe has 1 arguments available" \
 117         "check \$_probe_arg1 for probe user"
 118
 119     # Set a breakpoint with multiple probe locations.
 120     # In this scenario, we may expect more than 2 locations because of
 121     # the optimizations (inlining, loop unrolling, etc).
 122     gdb_test "break -pstap test:two" \
 123         "Breakpoint .* at $hex.*\[0-9\]+ locations.*" \
 124         "set multi-location probe breakpoint (probe two)"
 125
 126     # Reinit GDB, set a breakpoint on probe m4.
 127     delete_breakpoints
 128     if {[runto "-pstap test:m4"]} {
 129       pass "run to -pstap test:m4"
 130     } else {
 131       fail "run to -pstap test:m4"
 132     }
 133
 134     # Testing probe arguments.
 135     gdb_test "print \$_probe_argc" " = 3" \
 136     "print \$_probe_argc for probe m4"
 137     gdb_test "print \$_probe_arg0" " = 42" \
 138     "check \$_probe_arg0 for probe m4"
 139     gdb_test "print (const char *) \$_probe_arg1" \
 140     " = $hex .This is a test message.*" \
 141     "check \$_probe_arg1 for probe m4"
 142     gdb_test "print \$_probe_arg2 == 0" " = 1" \
 143     "check \$_probe_arg2 for probe m4"
 144
 145     # Reinit GDB, set a breakpoint on probe ps.
 146     delete_breakpoints
 147     if {[runto "-pstap test:ps"]} {
 148       pass "run to -pstap test:m4"
 149     } else {
 150       fail "run to -pstap test:m4"
 151     }
 152
 153     gdb_test "print \$_probe_argc" " = 3" \
 154     "print \$_probe_argc for probe ps"
 155     gdb_test "print (const char *) \$_probe_arg1" \
 156     " = $hex .This is another test message.*" \
 157     "print \$_probe_arg1 for probe ps"
 158
 159     return 0
 160 }
 161
 162 with_test_prefix "without semaphore, not optimized" {
 163     if {[stap_test "stap-probe-nosem-noopt"] == -1} {
 164         untested "stap probe test failed"
 165           return -1
 166     }
 167 }
 168
 169 with_test_prefix "with semaphore, not optimized" {
 170     stap_test "stap-probe-sem-noopt" "-DUSE_PROBES"
 171 }
 172
 173 with_test_prefix "without semaphore, optimized" {
 174     stap_test_no_debuginfo "stap-probe-nosem-opt"
 175 }
 176
 177 with_test_prefix "with semaphore, optimized" {
 178     stap_test_no_debuginfo "stap-probe-sem-opt" "-DUSE_PROBES"
 179 }