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

   1 # Copyright (C) 2011 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 $tracelevel then {
  20     strace $tracelevel
  21 }
  22
  23 if {[skip_shlib_tests]} {
  24         untested py-finish-breakpoint.exp
  25     return 0
  26 }
  27
  28 load_lib gdb-python.exp
  29
  30 set libfile "py-events-shlib"
  31 set libsrc  $srcdir/$subdir/$libfile.c
  32 set lib_sl  $objdir/$subdir/$libfile-nodebug.so
  33 set lib_opts ""
  34
  35 set testfile "py-finish-breakpoint"
  36 set srcfile ${testfile}.c
  37 set binfile ${objdir}/${subdir}/${testfile}
  38 set exec_opts [list debug shlib=$lib_sl]
  39
  40 if [get_compiler_info ${binfile}] {
  41     return -1
  42 }
  43
  44 if { [gdb_compile_shlib $libsrc $lib_sl $lib_opts] != ""
  45      || [gdb_compile $srcdir/$subdir/$srcfile $binfile executable $exec_opts] != ""} {
  46     untested "Could not compile either $libsrc or $srcdir/$subdir/$srcfile."
  47     return -1
  48 }
  49
  50 # Start with a fresh gdb.
  51 clean_restart ${testfile}
  52
  53 set python_file ${srcdir}/${subdir}/${testfile}.py
  54
  55
  56 # Skip all tests if Python scripting is not enabled.
  57 if { [skip_python_tests] } { continue }
  58
  59 #
  60 # Test FinishBreakpoint in normal conditions
  61 #
  62
  63 clean_restart ${testfile}
  64 gdb_load_shlibs ${lib_sl}
  65
  66 if ![runto_main] then {
  67     fail "Cannot run to main."
  68     return 0
  69 }
  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_shlibs ${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.*" "continue to do_nothing"
 122
 123 gdb_test "python finishBP = SimpleFinishBreakpoint(gdb.newest_frame())" \
 124          "SimpleFinishBreakpoint init" \
 125          "set finish breakpoint"
 126 gdb_test "continue" "SimpleFinishBreakpoint stop.*" "check FinishBreakpoint hit"
 127 gdb_test "python print finishBP.return_value" "None" "check return value without debug symbol"
 128
 129 #
 130 # Test FinishBreakpoint in function returned by longjmp
 131 #
 132
 133 clean_restart ${testfile}
 134 gdb_load_shlibs ${lib_sl}
 135
 136 gdb_test "source $python_file" "Python script imported.*" \
 137          "import python scripts"
 138
 139 if ![runto call_longjmp_1] then {
 140     perror "couldn't run to breakpoint call_longjmp"
 141     continue
 142 }
 143
 144 gdb_test "python finishbp = SimpleFinishBreakpoint(gdb.newest_frame())" \
 145          "SimpleFinishBreakpoint init" \
 146          "set finish breakpoint"
 147 gdb_test "break [gdb_get_line_number "after longjmp."]" "Breakpoint.* at .*" \
 148          "set BP after the jump"
 149 gdb_test "continue" "SimpleFinishBreakpoint out of scope.*" \
 150          "check FinishBP out of scope notification"
 151 gdb_test "python print finishbp.is_valid()" "False.*"\
 152          "ensure that finish bp is invalid afer out of scope notification"
 153
 154 #
 155 # Test FinishBreakpoint in BP condition evaluation
 156 # (finish in dummy frame)
 157 #
 158
 159 clean_restart ${testfile}
 160 gdb_load_shlibs ${lib_sl}
 161
 162 gdb_test "source $python_file" "Python script imported.*" \
 163          "import python scripts"
 164
 165
 166 if ![runto_main] then {
 167     fail "Cannot run to main."
 168     return 0
 169 }
 170
 171 gdb_test "break ${cond_line} if test_1(i,8)" "Breakpoint .* at .*" \
 172          "set a conditional BP"
 173 gdb_test "python TestBreakpoint()" "TestBreakpoint init" \
 174          "set FinishBP in a breakpoint condition"
 175 gdb_test "continue" \
 176          "\"FinishBreakpoint\" cannot be set on a dummy frame.*" \
 177          "don't allow FinishBreakpoint on dummy frames"
 178 gdb_test "print i" "8" "check stopped location"
 179
 180 #
 181 # Test FinishBreakpoint in BP condition evaluation
 182 # (finish in normal frame)
 183 #
 184
 185 clean_restart ${testfile}
 186 gdb_load_shlibs ${lib_sl}
 187
 188 gdb_test "source $python_file" "Python script imported.*" \
 189          "import python scripts"
 190
 191 if ![runto_main] then {
 192     fail "Cannot run to main."
 193     return 0
 194 }
 195
 196 gdb_test "break ${cond_line} if test(i,8)" \
 197          "Breakpoint .* at .*" "set conditional BP"
 198 gdb_test "python TestBreakpoint()" "TestBreakpoint init" "set BP in condition"
 199
 200 gdb_test "continue" \
 201          "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.*" \
 202          "stop in condition function"
 203
 204 gdb_test "continue" "Continuing.*" "finish condition evaluation"
 205 gdb_test "continue" "Breakpoint.*" "stop at conditional breakpoint"
 206 gdb_test "print i" "8" "check stopped location"
 207
 208 #
 209 # Test FinishBreakpoint in explicit inferior function call
 210 #
 211
 212 clean_restart ${testfile}
 213 gdb_load_shlibs ${lib_sl}
 214
 215 gdb_test "source $python_file" "Python script imported.*" \
 216          "import python scripts"
 217
 218 if ![runto_main] then {
 219     fail "Cannot run to main."
 220     return 0
 221 }
 222
 223 # return address in dummy frame
 224
 225 gdb_test "python TestExplicitBreakpoint('increase_1')" "Breakpoint.*at.*" \
 226          "prepare TestExplicitBreakpoint"
 227 gdb_test "print increase_1(&i)" \
 228          "\"FinishBreakpoint\" cannot be set on a dummy frame.*" \
 229          "don't allow FinishBreakpoint on dummy frames"
 230
 231 # return address in normal frame
 232
 233 delete_breakpoints
 234 gdb_test "python TestExplicitBreakpoint(\"increase_1\")" "Breakpoint.*at.*" \
 235          "prepare TestExplicitBreakpoint"
 236 gdb_test "print increase(&i)" \
 237          "SimpleFinishBreakpoint init.*SimpleFinishBreakpoint stop.*The program being debugged stopped while in a function called from GDB.*" \
 238          "FinishBP stop at during explicit function call"
 239
 240
 241 #
 242 # Test FinishBreakpoint when inferior exits
 243 #
 244
 245 if ![runto "test_exec_exit"] then {
 246     fail "Cannot run to test_exec_exit."
 247     return 0
 248 }
 249
 250 gdb_test "python SimpleFinishBreakpoint(gdb.newest_frame())" "SimpleFinishBreakpoint init" "set FinishBP after the exit()"
 251 gdb_test "continue" "SimpleFinishBreakpoint out of scope.*" "catch out of scope after exit"
 252
 253 #
 254 # Test FinishBreakpoint when inferior execs
 255 #
 256
 257 if ![runto "test_exec_exit"] then {
 258     fail "Cannot run to test_exec_exit."
 259     return 0
 260 }
 261
 262 gdb_test_no_output "set var do_exit = 0" "switch to execve() test"
 263 gdb_test "python SimpleFinishBreakpoint(gdb.newest_frame())" "SimpleFinishBreakpoint init" "set FinishBP after the exec"
 264 gdb_test "catch exec" "Catchpoint.*\(exec\).*" "catch exec"
 265 gdb_test "continue" "SimpleFinishBreakpoint out of scope.*" "catch out of scope after exec"