gdb/testsuite/gdb.python/py-finish-breakpoint.exp

   1 # Copyright (C) 2011-2019 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 # This file is part of the GDB testsuite.  It tests the mechanism
  17 # exposing values to Python.
  18
  19 if {[skip_shlib_tests]} {
  20         untested "skipping shared library tests"
  21     return 0
  22 }
  23
  24 load_lib gdb-python.exp
  25
  26 set libfile "py-events-shlib"
  27 set libsrc  $srcdir/$subdir/$libfile.c
  28 set lib_sl  [standard_output_file $libfile-nodebug.so]
  29 set lib_opts ""
  30
  31 standard_testfile
  32 set exec_opts [list debug shlib=$lib_sl]
  33
  34 if [get_compiler_info] {
  35     return -1
  36 }
  37
  38 if { [gdb_compile_shlib $libsrc $lib_sl $lib_opts] != ""
  39      || [gdb_compile $srcdir/$subdir/$srcfile $binfile executable $exec_opts] != ""} {
  40     untested "failed to compile"
  41     return -1
  42 }
  43
  44 # Start with a fresh gdb.
  45 clean_restart ${testfile}
  46
  47 if { [skip_python_tests] } { continue }
  48
  49 if { $gdb_py_is_py24 == 1 } {
  50     # Python 2.4, 2.5 do not support the "ValueError as e" syntax used in
  51     # the py-finish-breakpoint.py script.
  52         untested "missing support on Python 2.4 and 2.5"
  53     return 0
  54 }
  55
  56 #
  57 # Test FinishBreakpoint in normal conditions
  58 #
  59
  60 clean_restart ${testfile}
  61 gdb_load_shlib ${lib_sl}
  62
  63 if ![runto_main] then {
  64     fail "cannot run to main."
  65     return 0
  66 }
  67
  68 set python_file [gdb_remote_download host \
  69                      ${srcdir}/${subdir}/${testfile}.py]
  70
  71 gdb_test_no_output "set confirm off" "disable confirmation"
  72 gdb_test "source $python_file" "Python script imported.*" \
  73          "import python scripts"
  74 gdb_breakpoint "increase_1"
  75 gdb_test "continue" "Breakpoint .*at.*" "continue to the function to finish"
  76
  77 # set FinishBreakpoint
  78
  79 gdb_test "python finishbp_default = gdb.FinishBreakpoint ()" \
  80          "Temporary breakpoint.*" "set FinishBreakpoint with default frame value"
  81 gdb_test "python finishbp = MyFinishBreakpoint (gdb.parse_and_eval ('a'), gdb.newest_frame ())" \
  82          "Temporary breakpoint.*" "set FinishBreakpoint"
  83 gdb_test "python print (finishbp.return_value)" "None.*" \
  84          "check return_value at init"
  85
  86 # check normal bp hit
  87
  88 gdb_test "continue" "MyFinishBreakpoint stop with.*return_value is: -5.*#0.*increase.*" \
  89          "check MyFinishBreakpoint hit"
  90 gdb_test "python print (finishbp.return_value)" "-5.*" "check return_value"
  91
  92 gdb_test "python print (finishbp_default.hit_count)" "1.*" "check finishBP on default frame has been hit"
  93 gdb_test "python print (finishbp.is_valid())" "False.*"\
  94          "ensure that finish bp is invalid afer normal hit"
  95
  96 # check FinishBreakpoint in main no allowed
  97
  98 gdb_test "finish" "main.*" "return to main()"
  99 gdb_test "python MyFinishBreakpoint (None, gdb.selected_frame ())" \
 100          "ValueError: \"FinishBreakpoint\" not meaningful in the outermost frame..*" \
 101          "check FinishBP not allowed in main"
 102
 103 #
 104 # Test FinishBreakpoint with no debug symbol
 105 #
 106
 107 clean_restart ${testfile}
 108 gdb_load_shlib ${lib_sl}
 109
 110 gdb_test "source $python_file" "Python script imported.*" \
 111          "import python scripts"
 112 set cond_line [gdb_get_line_number "Condition Break."]
 113
 114 if ![runto_main] then {
 115     fail "cannot run to main."
 116     return 0
 117 }
 118
 119 gdb_test "print do_nothing" "no debug info.*" "ensure that shared lib has no debug info"
 120 gdb_breakpoint "do_nothing" {temporary}
 121 gdb_test "continue" "Temporary breakpoint .*in \\.?do_nothing.*" \
 122          "continue to do_nothing"
 123
 124 gdb_test "python finishBP = SimpleFinishBreakpoint(gdb.newest_frame())" \
 125          "SimpleFinishBreakpoint init" \
 126          "set finish breakpoint"
 127 gdb_test "continue" "SimpleFinishBreakpoint stop.*" "check FinishBreakpoint hit"
 128 gdb_test "python print (finishBP.return_value)" "None" "check return value without debug symbol"
 129
 130 #
 131 # Test FinishBreakpoint in function returned by longjmp
 132 #
 133
 134 clean_restart ${testfile}
 135 gdb_load_shlib ${lib_sl}
 136
 137 gdb_test "source $python_file" "Python script imported.*" \
 138          "import python scripts"
 139
 140 if ![runto call_longjmp_1] then {
 141     perror "couldn't run to breakpoint call_longjmp"
 142     continue
 143 }
 144
 145 gdb_test "python finishbp = SimpleFinishBreakpoint(gdb.newest_frame())" \
 146          "SimpleFinishBreakpoint init" \
 147          "set finish breakpoint"
 148 gdb_test "break [gdb_get_line_number "after longjmp."]" "Breakpoint.* at .*" \
 149          "set BP after the jump"
 150 gdb_test "continue" "SimpleFinishBreakpoint out of scope.*" \
 151          "check FinishBP out of scope notification"
 152 gdb_test "python print (finishbp.is_valid())" "False.*"\
 153          "ensure that finish bp is invalid afer out of scope notification"
 154
 155 #
 156 # Test FinishBreakpoint in BP condition evaluation
 157 # (finish in dummy frame)
 158 #
 159
 160 clean_restart ${testfile}
 161 gdb_load_shlib ${lib_sl}
 162
 163 gdb_test "source $python_file" "Python script imported.*" \
 164          "import python scripts"
 165
 166
 167 if ![runto_main] then {
 168     fail "cannot run to main."
 169     return 0
 170 }
 171
 172 gdb_test "break ${cond_line} if test_1(i,8)" "Breakpoint .* at .*" \
 173          "set a conditional BP"
 174 gdb_test "python TestBreakpoint()" "TestBreakpoint init" \
 175          "set FinishBP in a breakpoint condition"
 176 gdb_test "continue" \
 177          "\"FinishBreakpoint\" cannot be set on a dummy frame.*" \
 178          "don't allow FinishBreakpoint on dummy frames"
 179 gdb_test "print i" "8" "check stopped location"
 180
 181 #
 182 # Test FinishBreakpoint in BP condition evaluation
 183 # (finish in normal frame)
 184 #
 185
 186 clean_restart ${testfile}
 187 gdb_load_shlib ${lib_sl}
 188
 189 gdb_test "source $python_file" "Python script imported.*" \
 190          "import python scripts"
 191
 192 if ![runto_main] then {
 193     fail "cannot run to main."
 194     return 0
 195 }
 196
 197 gdb_test "break ${cond_line} if test(i,8)" \
 198          "Breakpoint .* at .*" "set conditional BP"
 199 gdb_test "python TestBreakpoint()" "TestBreakpoint init" "set BP in condition"
 200
 201 gdb_test "continue" \
 202          "test don't stop: 1.*test don't stop: 2.*test stop.*Error in testing breakpoint condition.*The program being debugged stopped while in a function called from GDB.*" \
 203          "stop in condition function"
 204
 205 gdb_test "continue" "Continuing.*" "finish condition evaluation"
 206 gdb_test "continue" "Breakpoint.*" "stop at conditional breakpoint"
 207 gdb_test "print i" "8" "check stopped location"
 208
 209 #
 210 # Test FinishBreakpoint in explicit inferior function call
 211 #
 212
 213 clean_restart ${testfile}
 214 gdb_load_shlib ${lib_sl}
 215
 216 gdb_test "source $python_file" "Python script imported.*" \
 217          "import python scripts"
 218
 219 if ![runto_main] then {
 220     fail "cannot run to main."
 221     return 0
 222 }
 223
 224 # return address in dummy frame
 225
 226 gdb_test "python TestExplicitBreakpoint('increase_1')" "Breakpoint.*at.*" \
 227          "prepare TestExplicitBreakpoint"
 228 gdb_test "print increase_1(&i)" \
 229          "\"FinishBreakpoint\" cannot be set on a dummy frame.*" \
 230          "don't allow FinishBreakpoint on dummy frames"
 231
 232 # return address in normal frame
 233
 234 delete_breakpoints
 235 gdb_test "python TestExplicitBreakpoint(\"increase_1\")" "Breakpoint.*at.*" \
 236          "prepare TestExplicitBreakpoint"
 237 gdb_test "print increase(&i)" \
 238          "SimpleFinishBreakpoint init.*SimpleFinishBreakpoint stop.*The program being debugged stopped while in a function called from GDB.*" \
 239          "FinishBP stop at during explicit function call"
 240
 241
 242 #
 243 # Test FinishBreakpoint when inferior exits
 244 #
 245
 246 if ![runto "test_exec_exit"] then {
 247     fail "cannot run to test_exec_exit."
 248     return 0
 249 }
 250
 251 gdb_test_no_output "set var self_exec = 0" "switch to exit() test"
 252 gdb_test "python SimpleFinishBreakpoint(gdb.newest_frame())" "SimpleFinishBreakpoint init" "set FinishBP after the exit()"
 253 gdb_test "continue" "SimpleFinishBreakpoint out of scope.*" "catch out of scope after exit"
 254
 255 #
 256 # Test FinishBreakpoint when inferior execs
 257 #
 258
 259 if ![runto "test_exec_exit"] then {
 260     fail "cannot run to test_exec_exit."
 261     return 0
 262 }
 263
 264 gdb_test "python SimpleFinishBreakpoint(gdb.newest_frame())" "SimpleFinishBreakpoint init" "set FinishBP after the exec"
 265 gdb_test "catch exec" "Catchpoint.*\(exec\).*" "catch exec"
 266 gdb_test "continue" "SimpleFinishBreakpoint out of scope.*" "catch out of scope after exec"