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1256af7d1a
Printing a GDB Python object is notoriously not helpful: >>> print(gdb.selected_inferior()) <gdb.Inferior object at 0x7fea59aed198> >>> print(gdb.objfiles()) [<gdb.Objfile object at 0x7fea59b57c90>] This makes printing debug traces more difficult than it should be. This patch provides some repr() implementation for these two types (more to come if people agree with the idea, but I want to test the water first). Here's the same example as above, but with this patch: >>> print(gdb.selected_inferior()) <gdb.Inferior num=1> >>> print(gdb.objfiles()) [<gdb.Objfile filename=/home/emaisin/build/binutils-gdb-gcc-git/gdb/test>] I implemented repr rather than str, because when printing a list (or another container I suppose), Python calls the repr method of the elements. This is useful when printing a list of inferiors or objfiles. The print(gdb.objfiles()) above would not have worked if I had implemented str. I found this post useful to understand the difference between repr and str: https://stackoverflow.com/questions/1436703/difference-between-str-and-repr gdb/ChangeLog: * python/py-inferior.c (infpy_repr): New. (inferior_object_type): Register infpy_repr. * python/py-objfile.c (objfpy_repr): New. (objfile_object_type): Register objfpy_repr. gdb/testsuite/ChangeLog: * gdb.python/py-inferior.exp: Test repr() of gdb.Inferior. * gdb.python/py-objfile.exp: Test repr() of gdb.Objfile. * gdb.python/py-symtab.exp: Update test printing an objfile. gdb/doc/ChangeLog: * python.texi (Basic Python): Mention the string representation of GDB Python objects.
88 lines
4.0 KiB
Plaintext
88 lines
4.0 KiB
Plaintext
# Copyright (C) 2010-2018 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This file is part of the GDB testsuite. It tests the mechanism
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# exposing values to Python.
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load_lib gdb-python.exp
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standard_testfile py-symbol.c
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if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
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return -1
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}
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# Skip all tests if Python scripting is not enabled.
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if { [skip_python_tests] } { continue }
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if ![runto_main] then {
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fail "can't run to main"
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return 0
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}
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global hex decimal
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# Setup and get the symbol table.
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set line_no [gdb_get_line_number "Block break here."]
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gdb_breakpoint $line_no
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gdb_continue_to_breakpoint "Block break here."
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gdb_py_test_silent_cmd "python frame = gdb.selected_frame()" "Get Frame" 0
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gdb_py_test_silent_cmd "python sal = frame.find_sal()" "Get block" 0
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gdb_py_test_silent_cmd "python symtab = sal.symtab" "Get block" 0
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gdb_py_test_silent_cmd "python global_block = symtab.global_block()" "Get global block" 0
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gdb_py_test_silent_cmd "python static_block = symtab.static_block()" "Get static block" 0
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gdb_py_test_silent_cmd "python global_symbols = \[\]; static_symbols = \[\]" "Set up symbol name lists" 0
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gdb_py_test_silent_cmd "python for sym in global_block: global_symbols.append(sym.name)" "Get global symbol names" 0
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gdb_py_test_silent_cmd "python for sym in static_block: static_symbols.append(sym.name)" "Get static symbol names" 0
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gdb_py_test_silent_cmd "step" "Step to the next line" 0
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gdb_py_test_silent_cmd "python new_pc = gdb.selected_frame().find_sal().pc" "Get new PC" 0
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# Test sal.
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if { [is_remote host] } {
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set py_symbol_c [string_to_regexp $srcfile]
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set full_py_symbol_c $py_symbol_c
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} else {
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set py_symbol_c [string_to_regexp ${srcdir}/${subdir}/${srcfile}]
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set full_py_symbol_c [string_to_regexp testsuite/${subdir}/${srcfile}]
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}
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gdb_test "python print (sal.symtab)" ".*${py_symbol_c}" "test symtab"
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gdb_test "python print (sal.pc)" "${decimal}" "test sal.pc"
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gdb_test "python print (sal.last == (new_pc - 1))" "True" "test sal.last"
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gdb_test "python print (sal.line)" "$line_no" "test sal.line"
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gdb_test "python print (sal.is_valid())" "True" "test sal.is_valid"
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# Test symbol table.
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gdb_test "python print (symtab.filename)" ".*${py_symbol_c}" "test symtab.filename"
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gdb_test "python print (symtab.objfile)" "<gdb.Objfile filename=${binfile}>" \
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"test symtab.objfile"
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gdb_test "python print (symtab.fullname())" ".*${full_py_symbol_c}" "test symtab.fullname"
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gdb_test "python print (symtab.is_valid())" "True" "test symtab.is_valid()"
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gdb_test "python print (\"qq\" in global_symbols)" "True" "test qq in global symbols"
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gdb_test "python print (\"func\" in global_symbols)" "True" "test func in global symbols"
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gdb_test "python print (\"main\" in global_symbols)" "True" "test main in global symbols"
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gdb_test "python print (\"int\" in static_symbols)" "True" "test int in static symbols"
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gdb_test "python print (\"char\" in static_symbols)" "True" "test char in static symbols"
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gdb_test "python print (\"simple_struct\" in static_symbols)" "True" "test simple_struct in static symbols"
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# Test is_valid when the objfile is unloaded. This must be the last
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# test as it unloads the object file in GDB.
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gdb_unload
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gdb_test "python print (sal.is_valid())" "False" "test sal.is_valid"
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gdb_test "python print (symtab.is_valid())" "False" "test symtab.is_valid()"
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gdb_test_no_output "python sal = None" "test sal destructor"
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gdb_test_no_output "python symtab = None" "test symtab destructor"
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