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

   1 # Copyright (C) 2011-2022 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 #
  50 # Test FinishBreakpoint in normal conditions
  51 #
  52
  53 clean_restart ${testfile}
  54 gdb_load_shlib ${lib_sl}
  55
  56 if ![runto_main] then {
  57     return 0
  58 }
  59
  60 set python_file [gdb_remote_download host \
  61                      ${srcdir}/${subdir}/${testfile}.py]
  62
  63 gdb_test_no_output "set confirm off" "disable confirmation"
  64 gdb_test "source $python_file" "Python script imported.*" \
  65          "import python scripts, 1"
  66 gdb_breakpoint "increase_1"
  67 gdb_test "continue" "Breakpoint .*at.*" "continue to the function to finish"
  68
  69 # set FinishBreakpoint
  70
  71 gdb_test "python finishbp_default = gdb.FinishBreakpoint ()" \
  72          "Temporary breakpoint.*" "set FinishBreakpoint with default frame value"
  73 gdb_test "python finishbp = MyFinishBreakpoint (gdb.parse_and_eval ('a'), gdb.newest_frame ())" \
  74          "Temporary breakpoint.*" "set FinishBreakpoint"
  75 gdb_test "python print (finishbp.return_value)" "None.*" \
  76          "check return_value at init"
  77
  78 # check normal bp hit
  79
  80 gdb_test "continue" "MyFinishBreakpoint stop with.*return_value is: -5.*#0.*increase.*" \
  81          "check MyFinishBreakpoint hit"
  82 gdb_test "python print (finishbp.return_value)" "-5.*" "check return_value"
  83
  84 gdb_test "python print (finishbp_default.hit_count)" "1.*" "check finishBP on default frame has been hit"
  85 gdb_test "python print (finishbp.is_valid())" "False.*"\
  86          "ensure that finish bp is invalid afer normal hit"
  87
  88 # check FinishBreakpoint in main no allowed
  89
  90 gdb_test "finish" "main.*" "return to main()"
  91 gdb_test "python MyFinishBreakpoint (None, gdb.selected_frame ())" \
  92          "ValueError: \"FinishBreakpoint\" not meaningful in the outermost frame..*" \
  93          "check FinishBP not allowed in main"
  94
  95 #
  96 # Test FinishBreakpoint with no debug symbol
  97 #
  98
  99 clean_restart ${testfile}
 100 gdb_load_shlib ${lib_sl}
 101
 102 gdb_test "source $python_file" "Python script imported.*" \
 103          "import python scripts, 2"
 104 set cond_line [gdb_get_line_number "Condition Break."]
 105
 106 if ![runto_main] then {
 107     return 0
 108 }
 109
 110 gdb_test "print do_nothing" "no debug info.*" "ensure that shared lib has no debug info"
 111 gdb_breakpoint "do_nothing" {temporary}
 112 gdb_test "continue" "Temporary breakpoint .*in \\.?do_nothing.*" \
 113          "continue to do_nothing"
 114
 115 gdb_test "python finishBP = SimpleFinishBreakpoint(gdb.newest_frame())" \
 116          "SimpleFinishBreakpoint init" \
 117          "set finish breakpoint for no debug symbol test"
 118 gdb_test "continue" "SimpleFinishBreakpoint stop.*" "check FinishBreakpoint hit"
 119 gdb_test "python print (finishBP.return_value)" "None" "check return value without debug symbol"
 120
 121 #
 122 # Test FinishBreakpoint in function returned by longjmp
 123 #
 124
 125 clean_restart ${testfile}
 126 gdb_load_shlib ${lib_sl}
 127
 128 gdb_test "source $python_file" "Python script imported.*" \
 129          "import python scripts, 3"
 130
 131 if ![runto call_longjmp_1] then {
 132     return
 133 }
 134
 135 gdb_test "python finishbp = SimpleFinishBreakpoint(gdb.newest_frame())" \
 136          "SimpleFinishBreakpoint init" \
 137          "set finish breakpoint for longjmp test"
 138 gdb_test "break [gdb_get_line_number "after longjmp."]" "Breakpoint.* at .*" \
 139          "set BP after the jump"
 140 gdb_test "continue" "SimpleFinishBreakpoint out of scope.*" \
 141          "check FinishBP out of scope notification"
 142 gdb_test "python print (finishbp.is_valid())" "False.*"\
 143          "ensure that finish bp is invalid afer out of scope notification"
 144
 145 #
 146 # Test FinishBreakpoint in BP condition evaluation
 147 # (finish in dummy frame)
 148 #
 149
 150 clean_restart ${testfile}
 151 gdb_load_shlib ${lib_sl}
 152
 153 gdb_test "source $python_file" "Python script imported.*" \
 154          "import python scripts, 4"
 155
 156
 157 if ![runto_main] then {
 158     return 0
 159 }
 160
 161 gdb_test "break ${cond_line} if test_1(i,8)" "Breakpoint .* at .*" \
 162          "set a conditional BP"
 163 gdb_test "python TestBreakpoint()" "TestBreakpoint init" \
 164          "set FinishBP in a breakpoint condition"
 165 gdb_test "continue" \
 166          "\"FinishBreakpoint\" cannot be set on a dummy frame.*" \
 167          "don't allow FinishBreakpoint on dummy frames"
 168 gdb_test "print i" "8" \
 169     "check stopped location for stop in dummy frame case"
 170
 171 #
 172 # Test FinishBreakpoint in BP condition evaluation
 173 # (finish in normal frame)
 174 #
 175
 176 clean_restart ${testfile}
 177 gdb_load_shlib ${lib_sl}
 178
 179 gdb_test "source $python_file" "Python script imported.*" \
 180          "import python scripts, 5"
 181
 182 if ![runto_main] then {
 183     return 0
 184 }
 185
 186 gdb_test "break ${cond_line} if test(i,8)" \
 187          "Breakpoint .* at .*" "set conditional BP"
 188 gdb_test "python TestBreakpoint()" "TestBreakpoint init" "set BP in condition"
 189
 190 gdb_test "continue" \
 191          "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.*" \
 192          "stop in condition function"
 193
 194 gdb_test "continue" "Continuing.*" "finish condition evaluation"
 195 gdb_test "continue" "Breakpoint.*" "stop at conditional breakpoint"
 196 gdb_test "print i" "8" \
 197     "check stopped location for stop in normal frame case"
 198
 199 #
 200 # Test FinishBreakpoint in explicit inferior function call
 201 #
 202
 203 clean_restart ${testfile}
 204 gdb_load_shlib ${lib_sl}
 205
 206 gdb_test "source $python_file" "Python script imported.*" \
 207          "import python scripts, 6"
 208
 209 if ![runto_main] then {
 210     return 0
 211 }
 212
 213 # return address in dummy frame
 214
 215 gdb_test "python TestExplicitBreakpoint('increase_1')" "Breakpoint.*at.*" \
 216          "prepare TestExplicitBreakpoint, return addr in dummy frame"
 217 gdb_test "print increase_1(&i)" \
 218          "\"FinishBreakpoint\" cannot be set on a dummy frame.*" \
 219          "don't allow FinishBreakpoint on dummy frames, return address in dummy frame"
 220
 221 # return address in normal frame
 222
 223 delete_breakpoints
 224 gdb_test "python TestExplicitBreakpoint(\"increase_1\")" "Breakpoint.*at.*" \
 225          "prepare TestExplicitBreakpoint, return addr in normal frame"
 226 gdb_test "print increase(&i)" \
 227          "SimpleFinishBreakpoint init.*SimpleFinishBreakpoint stop.*The program being debugged stopped while in a function called from GDB.*" \
 228          "FinishBP stop at during explicit function call"
 229
 230
 231 #
 232 # Test FinishBreakpoint when inferior exits
 233 #
 234
 235 if ![runto "test_exec_exit"] then {
 236     return 0
 237 }
 238
 239 gdb_test_no_output "set var self_exec = 0" "switch to exit() test"
 240 gdb_test "python SimpleFinishBreakpoint(gdb.newest_frame())" "SimpleFinishBreakpoint init" "set FinishBP after the exit()"
 241 gdb_test "continue" "SimpleFinishBreakpoint out of scope.*" "catch out of scope after exit"
 242
 243 #
 244 # Test FinishBreakpoint when inferior execs
 245 #
 246
 247 if ![runto "test_exec_exit"] then {
 248     return 0
 249 }
 250
 251 gdb_test "python SimpleFinishBreakpoint(gdb.newest_frame())" "SimpleFinishBreakpoint init" "set FinishBP after the exec"
 252 gdb_test "catch exec" "Catchpoint.*\(exec\).*"
 253 gdb_test "continue" "SimpleFinishBreakpoint out of scope.*" "catch out of scope after exec"