gdb/testsuite/gdb.python/py-symbol.exp

   1 # Copyright (C) 2010-2019 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 load_lib gdb-python.exp
  20
  21 standard_testfile
  22
  23 if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
  24     return -1
  25 }
  26
  27 # Skip all tests if Python scripting is not enabled.
  28 if { [skip_python_tests] } { continue }
  29
  30 # Test looking up a global symbol before we runto_main as this is the
  31 # point where we don't have a current frame, and we don't want to
  32 # require one.
  33 gdb_py_test_silent_cmd "python main_func = gdb.lookup_global_symbol(\"main\")" "Lookup main" 1
  34 gdb_test "python print (main_func.is_function)" "True" "test main_func.is_function"
  35 gdb_test "python print (gdb.lookup_global_symbol(\"junk\"))" "None" "test lookup_global_symbol(\"junk\")"
  36
  37 gdb_test "python print (gdb.lookup_global_symbol('main').value())" "$hex .main." \
  38     "print value of main"
  39
  40 set qq_line [gdb_get_line_number "line of qq"]
  41 gdb_test "python print (gdb.lookup_global_symbol('qq').line)" "$qq_line" \
  42     "print line number of qq"
  43
  44 gdb_test "python print (gdb.lookup_global_symbol('qq').value())" "72" \
  45     "print value of qq"
  46
  47 gdb_test "python print (gdb.lookup_global_symbol('qq').needs_frame)" \
  48     "False" \
  49     "print whether qq needs a frame"
  50
  51 set rr_line [gdb_get_line_number "line of rr"]
  52 gdb_test "python print (gdb.lookup_global_symbol ('rr') is None)" "True" \
  53     "lookup_global_symbol for static var"
  54
  55 gdb_test "python print (gdb.lookup_static_symbol ('rr').line)" "$rr_line" \
  56     "print line number of rr"
  57
  58 gdb_test "python print (gdb.lookup_static_symbol ('rr').value ())" "42" \
  59     "print value of rr"
  60
  61 gdb_test "python print (gdb.lookup_static_symbol ('rr').needs_frame)" \
  62     "False" \
  63     "print whether rr needs a frame"
  64
  65 gdb_test "python print (gdb.lookup_static_symbol ('nonexistent') is None)" \
  66     "True" "lookup_static_symbol for nonexistent var"
  67
  68 gdb_test "python print (gdb.lookup_static_symbol ('qq') is None)" \
  69     "True" "lookup_static_symbol for global var"
  70
  71 if ![runto_main] then {
  72     fail "can't run to main"
  73     return 0
  74 }
  75
  76 global hex decimal
  77
  78 gdb_breakpoint [gdb_get_line_number "Block break here."]
  79 gdb_continue_to_breakpoint "Block break here."
  80 gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame" 0
  81 gdb_py_test_silent_cmd "python block = frame.block()" "Get block" 0
  82
  83 # Test is_argument attribute.
  84 gdb_py_test_silent_cmd "python arg = gdb.lookup_symbol(\"arg\")" "Get variable arg" 0
  85 gdb_test "python print (arg\[0\].is_variable)" "False" "test arg.is_variable"
  86 gdb_test "python print (arg\[0\].is_constant)" "False" "test arg.is_constant"
  87 gdb_test "python print (arg\[0\].is_argument)" "True" "test arg.is_argument"
  88 gdb_test "python print (arg\[0\].is_function)" "False" "test arg.is_function"
  89
  90 # Test is_function attribute.
  91 gdb_py_test_silent_cmd "python func = block.function" "Get block function" 0
  92 gdb_test "python print (func.is_variable)" "False" "test func.is_variable"
  93 gdb_test "python print (func.is_constant)" "False" "test func.is_constant"
  94 gdb_test "python print (func.is_argument)" "False" "test func.is_argument"
  95 gdb_test "python print (func.is_function)" "True" "test func.is_function"
  96
  97 # Test attributes of func.
  98 gdb_test "python print (func.name)" "func" "test func.name"
  99 gdb_test "python print (func.print_name)" "func" "test func.print_name"
 100 gdb_test "python print (func.linkage_name)" "func" "test func.linkage_name"
 101 gdb_test "python print (func.addr_class == gdb.SYMBOL_LOC_BLOCK)" "True" "test func.addr_class"
 102
 103 gdb_breakpoint [gdb_get_line_number "Break at end."]
 104 gdb_continue_to_breakpoint "Break at end for variable a" ".*Break at end.*"
 105 gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame" 0
 106
 107 # Test is_variable attribute.
 108 gdb_py_test_silent_cmd "python a = gdb.lookup_symbol(\'a\')" "Get variable a" 0
 109 gdb_test "python print (a\[0\].is_variable)" "True" "test a.is_variable"
 110 gdb_test "python print (a\[0\].is_constant)" "False" "test a.is_constant"
 111 gdb_test "python print (a\[0\].is_argument)" "False" "test a.is_argument"
 112 gdb_test "python print (a\[0\].is_function)" "False" "test a.is_function"
 113
 114 # Test attributes of a.
 115 gdb_test "python print (a\[0\].addr_class == gdb.SYMBOL_LOC_COMPUTED)" "True" "test a.addr_class"
 116
 117 gdb_test "python print (a\[0\].value())" \
 118     "symbol requires a frame to compute its value.*"\
 119     "try to print value of a without a frame"
 120 gdb_test "python print (a\[0\].value(frame))" "0" \
 121     "print value of a"
 122 gdb_test "python print (a\[0\].needs_frame)" "True" \
 123     "print whether a needs a frame"
 124
 125 # Test is_constant attribute
 126 gdb_py_test_silent_cmd "python t = gdb.lookup_symbol(\"one\")" "Get constant t" 0
 127 gdb_test "python print (t\[0\].is_variable)" "False" "test t.is_variable"
 128 gdb_test "python print (t\[0\].is_constant)" "True" "test t.is_constant"
 129 gdb_test "python print (t\[0\].is_argument)" "False" "test t.is_argument"
 130 gdb_test "python print (t\[0\].is_function)" "False" "test t.is_function"
 131
 132 # Test attributes of t.
 133 gdb_test "python print (t\[0\].addr_class == gdb.SYMBOL_LOC_CONST)" "True" "test t.addr_class"
 134
 135 # Test type attribute.
 136 gdb_test "python print (t\[0\].type)" "enum tag" "get type"
 137
 138 # Test symtab attribute.
 139 if { [is_remote host] } {
 140     set py_symbol_c [string_to_regexp $srcfile]
 141 } else {
 142     set py_symbol_c [string_to_regexp ${srcdir}/${subdir}/${srcfile}]
 143 }
 144 gdb_test "python print (t\[0\].symtab)" "${py_symbol_c}" "get symtab"
 145
 146 # C++ tests
 147 # Recompile binary.
 148 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}-cxx" executable "debug c++"] != "" } {
 149     untested "failed to compile in C++ mode"
 150     return -1
 151 }
 152
 153 # Start with a fresh gdb.
 154 gdb_exit
 155 gdb_start
 156 gdb_reinitialize_dir $srcdir/$subdir
 157 gdb_load ${binfile}-cxx
 158
 159 gdb_test "python print (gdb.lookup_global_symbol ('(anonymous namespace)::anon') is None)" \
 160     "True" "anon is None"
 161 gdb_test "python print (gdb.lookup_static_symbol ('(anonymous namespace)::anon').value ())" \
 162     "10" "print value of anon"
 163
 164 if ![runto_main] then {
 165     fail "can't run to main"
 166     return 0
 167 }
 168
 169 gdb_breakpoint [gdb_get_line_number "Break in class."]
 170 gdb_continue_to_breakpoint "Break in class."
 171
 172 gdb_py_test_silent_cmd "python cplusframe = gdb.selected_frame()" "Get Frame at class" 0
 173 gdb_py_test_silent_cmd "python cplusfunc = cplusframe.block().function" "Get function at class" 0
 174
 175 gdb_test "python print (cplusfunc.is_variable)" \
 176     "False" "Test cplusfunc.is_variable"
 177 gdb_test "python print (cplusfunc.is_constant)" \
 178     "False" "Test cplusfunc.is_constant"
 179 gdb_test "python print (cplusfunc.is_argument)" \
 180     "False" "Test cplusfunc.is_argument"
 181 gdb_test "python print (cplusfunc.is_function)" \
 182     "True" "Test cplusfunc.is_function"
 183
 184 gdb_test "python print (cplusfunc.name)" "SimpleClass::valueofi().*" "test method.name"
 185 gdb_test "python print (cplusfunc.print_name)" "SimpleClass::valueofi().*" "test method.print_name"
 186 gdb_test "python print (cplusfunc.linkage_name)" "SimpleClass::valueofi().*" "test method.linkage_name"
 187 gdb_test "python print (cplusfunc.addr_class == gdb.SYMBOL_LOC_BLOCK)" "True" "test method.addr_class"
 188
 189 # Test is_valid when the objfile is unloaded.  This must be the last
 190 # test as it unloads the object file in GDB.
 191 # Start with a fresh gdb.
 192 clean_restart ${testfile}
 193 if ![runto_main] then {
 194     fail "cannot run to main."
 195     return 0
 196 }
 197
 198 gdb_breakpoint [gdb_get_line_number "Break at end."]
 199 gdb_continue_to_breakpoint "Break at end for symbol validity" ".*Break at end.*"
 200 gdb_py_test_silent_cmd "python a = gdb.lookup_symbol(\'a\')" "Get variable a" 0
 201 gdb_test "python print (a\[0\].is_valid())" "True" "test symbol validity"
 202 delete_breakpoints
 203 gdb_unload
 204 gdb_test "python print (a\[0\].is_valid())" "False" "test symbol non-validity"
 205 gdb_test_no_output "python a = None" "test symbol destructor"