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 #
  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     fail "cannot run to main."
  58     return 0
  59 }
  60
  61 set python_file [gdb_remote_download host \
  62                      ${srcdir}/${subdir}/${testfile}.py]
  63
  64 gdb_test_no_output "set confirm off" "disable confirmation"
  65 gdb_test "source $python_file" "Python script imported.*" \
  66          "import python scripts"
  67 gdb_breakpoint "increase_1"
  68 gdb_test "continue" "Breakpoint .*at.*" "continue to the function to finish"
  69
  70 # set FinishBreakpoint
  71
  72 gdb_test "python finishbp_default = gdb.FinishBreakpoint ()" \
  73          "Temporary breakpoint.*" "set FinishBreakpoint with default frame value"
  74 gdb_test "python finishbp = MyFinishBreakpoint (gdb.parse_and_eval ('a'), gdb.newest_frame ())" \
  75          "Temporary breakpoint.*" "set FinishBreakpoint"
  76 gdb_test "python print (finishbp.return_value)" "None.*" \
  77          "check return_value at init"
  78
  79 # check normal bp hit
  80
  81 gdb_test "continue" "MyFinishBreakpoint stop with.*return_value is: -5.*#0.*increase.*" \
  82          "check MyFinishBreakpoint hit"
  83 gdb_test "python print (finishbp.return_value)" "-5.*" "check return_value"
  84
  85 gdb_test "python print (finishbp_default.hit_count)" "1.*" "check finishBP on default frame has been hit"
  86 gdb_test "python print (finishbp.is_valid())" "False.*"\
  87          "ensure that finish bp is invalid afer normal hit"
  88
  89 # check FinishBreakpoint in main no allowed
  90
  91 gdb_test "finish" "main.*" "return to main()"
  92 gdb_test "python MyFinishBreakpoint (None, gdb.selected_frame ())" \
  93          "ValueError: \"FinishBreakpoint\" not meaningful in the outermost frame..*" \
  94          "check FinishBP not allowed in main"
  95
  96 #
  97 # Test FinishBreakpoint with no debug symbol
  98 #
  99
 100 clean_restart ${testfile}
 101 gdb_load_shlib ${lib_sl}
 102
 103 gdb_test "source $python_file" "Python script imported.*" \
 104          "import python scripts"
 105 set cond_line [gdb_get_line_number "Condition Break."]
 106
 107 if ![runto_main] then {
 108     fail "cannot run to main."
 109     return 0
 110 }
 111
 112 gdb_test "print do_nothing" "no debug info.*" "ensure that shared lib has no debug info"
 113 gdb_breakpoint "do_nothing" {temporary}
 114 gdb_test "continue" "Temporary breakpoint .*in \\.?do_nothing.*" \
 115          "continue to do_nothing"
 116
 117 gdb_test "python finishBP = SimpleFinishBreakpoint(gdb.newest_frame())" \
 118          "SimpleFinishBreakpoint init" \
 119          "set finish breakpoint"
 120 gdb_test "continue" "SimpleFinishBreakpoint stop.*" "check FinishBreakpoint hit"
 121 gdb_test "python print (finishBP.return_value)" "None" "check return value without debug symbol"
 122
 123 #
 124 # Test FinishBreakpoint in function returned by longjmp
 125 #
 126
 127 clean_restart ${testfile}
 128 gdb_load_shlib ${lib_sl}
 129
 130 gdb_test "source $python_file" "Python script imported.*" \
 131          "import python scripts"
 132
 133 if ![runto call_longjmp_1] then {
 134     perror "couldn't run to breakpoint call_longjmp"
 135     continue
 136 }
 137
 138 gdb_test "python finishbp = SimpleFinishBreakpoint(gdb.newest_frame())" \
 139          "SimpleFinishBreakpoint init" \
 140          "set finish breakpoint"
 141 gdb_test "break [gdb_get_line_number "after longjmp."]" "Breakpoint.* at .*" \
 142          "set BP after the jump"
 143 gdb_test "continue" "SimpleFinishBreakpoint out of scope.*" \
 144          "check FinishBP out of scope notification"
 145 gdb_test "python print (finishbp.is_valid())" "False.*"\
 146          "ensure that finish bp is invalid afer out of scope notification"
 147
 148 #
 149 # Test FinishBreakpoint in BP condition evaluation
 150 # (finish in dummy frame)
 151 #
 152
 153 clean_restart ${testfile}
 154 gdb_load_shlib ${lib_sl}
 155
 156 gdb_test "source $python_file" "Python script imported.*" \
 157          "import python scripts"
 158
 159
 160 if ![runto_main] then {
 161     fail "cannot run to main."
 162     return 0
 163 }
 164
 165 gdb_test "break ${cond_line} if test_1(i,8)" "Breakpoint .* at .*" \
 166          "set a conditional BP"
 167 gdb_test "python TestBreakpoint()" "TestBreakpoint init" \
 168          "set FinishBP in a breakpoint condition"
 169 gdb_test "continue" \
 170          "\"FinishBreakpoint\" cannot be set on a dummy frame.*" \
 171          "don't allow FinishBreakpoint on dummy frames"
 172 gdb_test "print i" "8" "check stopped location"
 173
 174 #
 175 # Test FinishBreakpoint in BP condition evaluation
 176 # (finish in normal frame)
 177 #
 178
 179 clean_restart ${testfile}
 180 gdb_load_shlib ${lib_sl}
 181
 182 gdb_test "source $python_file" "Python script imported.*" \
 183          "import python scripts"
 184
 185 if ![runto_main] then {
 186     fail "cannot run to main."
 187     return 0
 188 }
 189
 190 gdb_test "break ${cond_line} if test(i,8)" \
 191          "Breakpoint .* at .*" "set conditional BP"
 192 gdb_test "python TestBreakpoint()" "TestBreakpoint init" "set BP in condition"
 193
 194 gdb_test "continue" \
 195          "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.*" \
 196          "stop in condition function"
 197
 198 gdb_test "continue" "Continuing.*" "finish condition evaluation"
 199 gdb_test "continue" "Breakpoint.*" "stop at conditional breakpoint"
 200 gdb_test "print i" "8" "check stopped location"
 201
 202 #
 203 # Test FinishBreakpoint in explicit inferior function call
 204 #
 205
 206 clean_restart ${testfile}
 207 gdb_load_shlib ${lib_sl}
 208
 209 gdb_test "source $python_file" "Python script imported.*" \
 210          "import python scripts"
 211
 212 if ![runto_main] then {
 213     fail "cannot run to main."
 214     return 0
 215 }
 216
 217 # return address in dummy frame
 218
 219 gdb_test "python TestExplicitBreakpoint('increase_1')" "Breakpoint.*at.*" \
 220          "prepare TestExplicitBreakpoint"
 221 gdb_test "print increase_1(&i)" \
 222          "\"FinishBreakpoint\" cannot be set on a dummy frame.*" \
 223          "don't allow FinishBreakpoint on dummy frames"
 224
 225 # return address in normal frame
 226
 227 delete_breakpoints
 228 gdb_test "python TestExplicitBreakpoint(\"increase_1\")" "Breakpoint.*at.*" \
 229          "prepare TestExplicitBreakpoint"
 230 gdb_test "print increase(&i)" \
 231          "SimpleFinishBreakpoint init.*SimpleFinishBreakpoint stop.*The program being debugged stopped while in a function called from GDB.*" \
 232          "FinishBP stop at during explicit function call"
 233
 234
 235 #
 236 # Test FinishBreakpoint when inferior exits
 237 #
 238
 239 if ![runto "test_exec_exit"] then {
 240     fail "cannot run to test_exec_exit."
 241     return 0
 242 }
 243
 244 gdb_test_no_output "set var self_exec = 0" "switch to exit() test"
 245 gdb_test "python SimpleFinishBreakpoint(gdb.newest_frame())" "SimpleFinishBreakpoint init" "set FinishBP after the exit()"
 246 gdb_test "continue" "SimpleFinishBreakpoint out of scope.*" "catch out of scope after exit"
 247
 248 #
 249 # Test FinishBreakpoint when inferior execs
 250 #
 251
 252 if ![runto "test_exec_exit"] then {
 253     fail "cannot run to test_exec_exit."
 254     return 0
 255 }
 256
 257 gdb_test "python SimpleFinishBreakpoint(gdb.newest_frame())" "SimpleFinishBreakpoint init" "set FinishBP after the exec"
 258 gdb_test "catch exec" "Catchpoint.*\(exec\).*" "catch exec"
 259 gdb_test "continue" "SimpleFinishBreakpoint out of scope.*" "catch out of scope after exec"