From: nobody <> Date: Fri, 23 Dec 2011 17:06:17 +0000 (+0000) Subject: This commit was manufactured by cvs2svn to create branch 'gdb_7_4-branch'. X-Git-Tag: gdb_7_4-2012-01-24-release~61 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cc06e3f51cd2adfdfd5cbb60a3dad9287b154033;p=thirdparty%2Fbinutils-gdb.git This commit was manufactured by cvs2svn to create branch 'gdb_7_4-branch'. Cherrypick from master 2011-12-23 17:06:16 UTC Kevin Pouget ' Introduce gdb.FinishBreakpoint in Python': gdb/python/py-finishbreakpoint.c gdb/testsuite/gdb.python/py-finish-breakpoint.c gdb/testsuite/gdb.python/py-finish-breakpoint.exp gdb/testsuite/gdb.python/py-finish-breakpoint.py gdb/testsuite/gdb.python/py-finish-breakpoint2.cc gdb/testsuite/gdb.python/py-finish-breakpoint2.exp gdb/testsuite/gdb.python/py-finish-breakpoint2.py --- diff --git a/gdb/python/py-finishbreakpoint.c b/gdb/python/py-finishbreakpoint.c new file mode 100644 index 00000000000..a2d816599e3 --- /dev/null +++ b/gdb/python/py-finishbreakpoint.c @@ -0,0 +1,462 @@ +/* Python interface to finish breakpoints + + Copyright (C) 2011 Free Software Foundation, Inc. + + This file is part of GDB. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ + + + +#include "defs.h" +#include "exceptions.h" +#include "python-internal.h" +#include "breakpoint.h" +#include "frame.h" +#include "gdbthread.h" +#include "arch-utils.h" +#include "language.h" +#include "observer.h" +#include "inferior.h" + +static PyTypeObject finish_breakpoint_object_type; + +/* Function that is called when a Python finish bp is found out of scope. */ +static char * const outofscope_func = "out_of_scope"; + +/* struct implementing the gdb.FinishBreakpoint object by extending + the gdb.Breakpoint class. */ +struct finish_breakpoint_object +{ + /* gdb.Breakpoint base class. */ + breakpoint_object py_bp; + /* gdb.Type object of the value return by the breakpointed function. + May be NULL if no debug information was available or return type + was VOID. */ + PyObject *return_type; + /* gdb.Type object of the function finished by this breakpoint. Will be + NULL if return_type is NULL. */ + PyObject *function_type; + /* When stopped at this FinishBreakpoint, gdb.Value object returned by + the function; Py_None if the value is not computable; NULL if GDB is + not stopped at a FinishBreakpoint. */ + PyObject *return_value; +}; + +/* Python function to get the 'return_value' attribute of + FinishBreakpoint. */ + +static PyObject * +bpfinishpy_get_returnvalue (PyObject *self, void *closure) +{ + struct finish_breakpoint_object *self_finishbp = + (struct finish_breakpoint_object *) self; + + if (!self_finishbp->return_value) + Py_RETURN_NONE; + + Py_INCREF (self_finishbp->return_value); + return self_finishbp->return_value; +} + +/* Deallocate FinishBreakpoint object. */ + +static void +bpfinishpy_dealloc (PyObject *self) +{ + struct finish_breakpoint_object *self_bpfinish = + (struct finish_breakpoint_object *) self; + + Py_XDECREF (self_bpfinish->function_type); + Py_XDECREF (self_bpfinish->return_type); + Py_XDECREF (self_bpfinish->return_value); +} + +/* Triggered when gdbpy_should_stop is about to execute the `stop' callback + of the gdb.FinishBreakpoint object BP_OBJ. Will compute and cache the + `return_value', if possible. */ + +void +bpfinishpy_pre_stop_hook (struct breakpoint_object *bp_obj) +{ + struct finish_breakpoint_object *self_finishbp = + (struct finish_breakpoint_object *) bp_obj; + volatile struct gdb_exception except; + + /* Can compute return_value only once. */ + gdb_assert (!self_finishbp->return_value); + + if (!self_finishbp->return_type) + return; + + TRY_CATCH (except, RETURN_MASK_ALL) + { + struct value *ret = + get_return_value (type_object_to_type (self_finishbp->function_type), + type_object_to_type (self_finishbp->return_type)); + + if (ret) + { + self_finishbp->return_value = value_to_value_object (ret); + if (!self_finishbp->return_value) + gdbpy_print_stack (); + } + else + { + Py_INCREF (Py_None); + self_finishbp->return_value = Py_None; + } + } + if (except.reason < 0) + { + gdbpy_convert_exception (except); + gdbpy_print_stack (); + } +} + +/* Triggered when gdbpy_should_stop has triggered the `stop' callback + of the gdb.FinishBreakpoint object BP_OBJ. */ + +void +bpfinishpy_post_stop_hook (struct breakpoint_object *bp_obj) +{ + volatile struct gdb_exception except; + + TRY_CATCH (except, RETURN_MASK_ALL) + { + /* Can't delete it here, but it will be removed at the next stop. */ + disable_breakpoint (bp_obj->bp); + gdb_assert (bp_obj->bp->disposition == disp_del); + } + if (except.reason < 0) + { + gdbpy_convert_exception (except); + gdbpy_print_stack (); + } +} + +/* Python function to create a new breakpoint. */ + +static int +bpfinishpy_init (PyObject *self, PyObject *args, PyObject *kwargs) +{ + static char *keywords[] = { "frame", "internal", NULL }; + struct finish_breakpoint_object *self_bpfinish = + (struct finish_breakpoint_object *) self; + int type = bp_breakpoint; + PyObject *frame_obj = NULL; + int thread; + struct frame_info *frame, *prev_frame = NULL; + struct frame_id frame_id; + PyObject *internal = NULL; + int internal_bp = 0; + CORE_ADDR finish_pc, pc; + volatile struct gdb_exception except; + char *addr_str, small_buf[100]; + struct symbol *function; + + if (!PyArg_ParseTupleAndKeywords (args, kwargs, "|OO", keywords, + &frame_obj, &internal)) + return -1; + + /* Default frame to gdb.newest_frame if necessary. */ + if (!frame_obj) + frame_obj = gdbpy_newest_frame (NULL, NULL); + else + Py_INCREF (frame_obj); + + frame = frame_object_to_frame_info (frame_obj); + Py_DECREF (frame_obj); + + if (frame == NULL) + goto invalid_frame; + + TRY_CATCH (except, RETURN_MASK_ALL) + { + prev_frame = get_prev_frame (frame); + if (prev_frame == 0) + { + PyErr_SetString (PyExc_ValueError, _("\"FinishBreakpoint\" not " \ + "meaningful in the outermost "\ + "frame.")); + } + else if (get_frame_type (prev_frame) == DUMMY_FRAME) + { + PyErr_SetString (PyExc_ValueError, _("\"FinishBreakpoint\" cannot "\ + "be set on a dummy frame.")); + } + else + { + frame_id = get_frame_id (prev_frame); + if (frame_id_eq (frame_id, null_frame_id)) + PyErr_SetString (PyExc_ValueError, + _("Invalid ID for the `frame' object.")); + } + } + if (except.reason < 0) + { + gdbpy_convert_exception (except); + return -1; + } + else if (PyErr_Occurred ()) + return -1; + + thread = pid_to_thread_id (inferior_ptid); + if (thread == 0) + { + PyErr_SetString (PyExc_ValueError, + _("No thread currently selected.")); + return -1; + } + + if (internal) + { + internal_bp = PyObject_IsTrue (internal); + if (internal_bp == -1) + { + PyErr_SetString (PyExc_ValueError, + _("The value of `internal' must be a boolean.")); + return -1; + } + } + + /* Find the function we will return from. */ + self_bpfinish->return_type = NULL; + self_bpfinish->function_type = NULL; + + TRY_CATCH (except, RETURN_MASK_ALL) + { + if (get_frame_pc_if_available (frame, &pc)) + { + function = find_pc_function (pc); + if (function != NULL) + { + struct type *ret_type = + TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); + + /* Remember only non-void return types. */ + if (TYPE_CODE (ret_type) != TYPE_CODE_VOID) + { + /* Ignore Python errors at this stage. */ + self_bpfinish->return_type = type_to_type_object (ret_type); + PyErr_Clear (); + self_bpfinish->function_type = + type_to_type_object (SYMBOL_TYPE (function)); + PyErr_Clear (); + } + } + } + } + if (except.reason < 0 + || !self_bpfinish->return_type || !self_bpfinish->function_type) + { + /* Won't be able to compute return value. */ + Py_XDECREF (self_bpfinish->return_type); + Py_XDECREF (self_bpfinish->function_type); + + self_bpfinish->return_type = NULL; + self_bpfinish->function_type = NULL; + } + + bppy_pending_object = &self_bpfinish->py_bp; + bppy_pending_object->number = -1; + bppy_pending_object->bp = NULL; + + TRY_CATCH (except, RETURN_MASK_ALL) + { + /* Set a breakpoint on the return address. */ + finish_pc = get_frame_pc (prev_frame); + sprintf (small_buf, "*%s", hex_string (finish_pc)); + addr_str = small_buf; + + create_breakpoint (python_gdbarch, + addr_str, NULL, thread, + 0, + 1 /*temp_flag*/, + bp_breakpoint, + 0, + AUTO_BOOLEAN_TRUE, + &bkpt_breakpoint_ops, + 0, 1, internal_bp); + } + GDB_PY_SET_HANDLE_EXCEPTION (except); + + self_bpfinish->py_bp.bp->frame_id = frame_id; + self_bpfinish->py_bp.is_finish_bp = 1; + + /* Bind the breakpoint with the current program space. */ + self_bpfinish->py_bp.bp->pspace = current_program_space; + + return 0; + + invalid_frame: + PyErr_SetString (PyExc_ValueError, + _("Invalid ID for the `frame' object.")); + return -1; +} + +/* Called when GDB notices that the finish breakpoint BP_OBJ is out of + the current callstack. Triggers the method OUT_OF_SCOPE if implemented, + then delete the breakpoint. */ + +static void +bpfinishpy_out_of_scope (struct finish_breakpoint_object *bpfinish_obj) +{ + volatile struct gdb_exception except; + breakpoint_object *bp_obj = (breakpoint_object *) bpfinish_obj; + PyObject *py_obj = (PyObject *) bp_obj; + + if (bpfinish_obj->py_bp.bp->enable_state == bp_enabled + && PyObject_HasAttrString (py_obj, outofscope_func)) + { + if (!PyObject_CallMethod (py_obj, outofscope_func, NULL)) + gdbpy_print_stack (); + } + + delete_breakpoint (bpfinish_obj->py_bp.bp); +} + +/* Callback for `bpfinishpy_detect_out_scope'. Triggers Python's + `B->out_of_scope' function if B is a FinishBreakpoint out of its scope. */ + +static int +bpfinishpy_detect_out_scope_cb (struct breakpoint *b, void *args) +{ + volatile struct gdb_exception except; + struct breakpoint *bp_stopped = (struct breakpoint *) args; + PyObject *py_bp = (PyObject *) b->py_bp_object; + struct gdbarch *garch = b->gdbarch ? b->gdbarch : get_current_arch (); + + /* Trigger out_of_scope if this is a FinishBreakpoint and its frame is + not anymore in the current callstack. */ + if (py_bp != NULL && b->py_bp_object->is_finish_bp) + { + struct finish_breakpoint_object *finish_bp = + (struct finish_breakpoint_object *) py_bp; + + /* Check scope if not currently stopped at the FinishBreakpoint. */ + if (b != bp_stopped) + { + TRY_CATCH (except, RETURN_MASK_ALL) + { + if (b->pspace == current_inferior ()->pspace + && (!target_has_registers + || frame_find_by_id (b->frame_id) == NULL)) + bpfinishpy_out_of_scope (finish_bp); + } + if (except.reason < 0) + { + gdbpy_convert_exception (except); + gdbpy_print_stack (); + } + } + } + + return 0; +} + +/* Attached to `stop' notifications, check if the execution has run + out of the scope of any FinishBreakpoint before it has been hit. */ + +static void +bpfinishpy_handle_stop (struct bpstats *bs, int print_frame) +{ + struct cleanup *cleanup = ensure_python_env (get_current_arch (), + current_language); + + iterate_over_breakpoints (bpfinishpy_detect_out_scope_cb, + bs == NULL ? NULL : bs->breakpoint_at); + + do_cleanups (cleanup); +} + +/* Attached to `exit' notifications, triggers all the necessary out of + scope notifications. */ + +static void +bpfinishpy_handle_exit (struct inferior *inf) +{ + struct cleanup *cleanup = ensure_python_env (target_gdbarch, + current_language); + + iterate_over_breakpoints (bpfinishpy_detect_out_scope_cb, NULL); + + do_cleanups (cleanup); +} + +/* Initialize the Python finish breakpoint code. */ + +void +gdbpy_initialize_finishbreakpoints (void) +{ + if (PyType_Ready (&finish_breakpoint_object_type) < 0) + return; + + Py_INCREF (&finish_breakpoint_object_type); + PyModule_AddObject (gdb_module, "FinishBreakpoint", + (PyObject *) &finish_breakpoint_object_type); + + observer_attach_normal_stop (bpfinishpy_handle_stop); + observer_attach_inferior_exit (bpfinishpy_handle_exit); +} + +static PyGetSetDef finish_breakpoint_object_getset[] = { + { "return_value", bpfinishpy_get_returnvalue, NULL, + "gdb.Value object representing the return value, if any. \ +None otherwise.", NULL }, + { NULL } /* Sentinel. */ +}; + +static PyTypeObject finish_breakpoint_object_type = +{ + PyObject_HEAD_INIT (NULL) + 0, /*ob_size*/ + "gdb.FinishBreakpoint", /*tp_name*/ + sizeof (struct finish_breakpoint_object), /*tp_basicsize*/ + 0, /*tp_itemsize*/ + bpfinishpy_dealloc, /*tp_dealloc*/ + 0, /*tp_print*/ + 0, /*tp_getattr*/ + 0, /*tp_setattr*/ + 0, /*tp_compare*/ + 0, /*tp_repr*/ + 0, /*tp_as_number*/ + 0, /*tp_as_sequence*/ + 0, /*tp_as_mapping*/ + 0, /*tp_hash */ + 0, /*tp_call*/ + 0, /*tp_str*/ + 0, /*tp_getattro*/ + 0, /*tp_setattro */ + 0, /*tp_as_buffer*/ + Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/ + "GDB finish breakpoint object", /* tp_doc */ + 0, /* tp_traverse */ + 0, /* tp_clear */ + 0, /* tp_richcompare */ + 0, /* tp_weaklistoffset */ + 0, /* tp_iter */ + 0, /* tp_iternext */ + 0, /* tp_methods */ + 0, /* tp_members */ + finish_breakpoint_object_getset,/* tp_getset */ + &breakpoint_object_type, /* tp_base */ + 0, /* tp_dict */ + 0, /* tp_descr_get */ + 0, /* tp_descr_set */ + 0, /* tp_dictoffset */ + bpfinishpy_init, /* tp_init */ + 0, /* tp_alloc */ + 0 /* tp_new */ +}; diff --git a/gdb/testsuite/gdb.python/py-finish-breakpoint.c b/gdb/testsuite/gdb.python/py-finish-breakpoint.c new file mode 100644 index 00000000000..cf2e06c947b --- /dev/null +++ b/gdb/testsuite/gdb.python/py-finish-breakpoint.c @@ -0,0 +1,100 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2011 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +#include +#include +#include + +/* Defined in py-events-shlib.h. */ +extern void do_nothing (void); + +int increase_1 (int *a) +{ + *a += 1; + return -5; +} + +void increase (int *a) +{ + increase_1 (a); +} + +int +test_1 (int i, int j) +{ + return i == j; +} + +int +test (int i, int j) +{ + return test_1 (i, j); +} + +int +call_longjmp_1 (jmp_buf *buf) +{ + longjmp (*buf, 1); +} + +int +call_longjmp (jmp_buf *buf) +{ + call_longjmp_1 (buf); +} + +void +test_exec_exit (int do_exit) +{ + if (do_exit) + exit (0); + else + execl ("/bin/echo", "echo", "-1", (char *)0); +} + +int main (int argc, char *argv[]) +{ + jmp_buf env; + int foo = 5; + int bar = 42; + int i, j; + + do_nothing (); + + i = 0; + /* Break at increase. */ + increase (&i); + increase (&i); + increase (&i); + + for (i = 0; i < 10; i++) + { + j += 1; /* Condition Break. */ + } + + if (setjmp (env) == 0) /* longjmp caught */ + { + call_longjmp (&env); + } + else + j += 1; /* after longjmp. */ + + test_exec_exit (1); + + return j; /* Break at end. */ +} diff --git a/gdb/testsuite/gdb.python/py-finish-breakpoint.exp b/gdb/testsuite/gdb.python/py-finish-breakpoint.exp new file mode 100644 index 00000000000..c7a42a241f3 --- /dev/null +++ b/gdb/testsuite/gdb.python/py-finish-breakpoint.exp @@ -0,0 +1,265 @@ +# Copyright (C) 2011 Free Software Foundation, Inc. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +# This file is part of the GDB testsuite. It tests the mechanism +# exposing values to Python. + +if $tracelevel then { + strace $tracelevel +} + +if {[skip_shlib_tests]} { + untested py-finish-breakpoint.exp + return 0 +} + +load_lib gdb-python.exp + +set libfile "py-events-shlib" +set libsrc $srcdir/$subdir/$libfile.c +set lib_sl $objdir/$subdir/$libfile-nodebug.so +set lib_opts "" + +set testfile "py-finish-breakpoint" +set srcfile ${testfile}.c +set binfile ${objdir}/${subdir}/${testfile} +set exec_opts [list debug shlib=$lib_sl] + +if [get_compiler_info ${binfile}] { + return -1 +} + +if { [gdb_compile_shlib $libsrc $lib_sl $lib_opts] != "" + || [gdb_compile $srcdir/$subdir/$srcfile $binfile executable $exec_opts] != ""} { + untested "Could not compile either $libsrc or $srcdir/$subdir/$srcfile." + return -1 +} + +# Start with a fresh gdb. +clean_restart ${testfile} + +set python_file ${srcdir}/${subdir}/${testfile}.py + + +# Skip all tests if Python scripting is not enabled. +if { [skip_python_tests] } { continue } + +# +# Test FinishBreakpoint in normal conditions +# + +clean_restart ${testfile} +gdb_load_shlibs ${lib_sl} + +if ![runto_main] then { + fail "Cannot run to main." + return 0 +} + +gdb_test_no_output "set confirm off" "disable confirmation" +gdb_test "source $python_file" "Python script imported.*" \ + "import python scripts" +gdb_breakpoint "increase_1" +gdb_test "continue" "Breakpoint .*at.*" "continue to the function to finish" + +# set FinishBreakpoint + +gdb_test "python finishbp_default = gdb.FinishBreakpoint ()" \ + "Temporary breakpoint.*" "set FinishBreakpoint with default frame value" +gdb_test "python finishbp = MyFinishBreakpoint (gdb.parse_and_eval ('a'), gdb.newest_frame ())" \ + "Temporary breakpoint.*" "set FinishBreakpoint" +gdb_test "python print finishbp.return_value" "None.*" \ + "check return_value at init" + +# check normal bp hit + +gdb_test "continue" "MyFinishBreakpoint stop with.*return_value is: -5.*#0.*increase.*" \ + "check MyFinishBreakpoint hit" +gdb_test "python print finishbp.return_value" "-5.*" "check return_value" + +gdb_test "python print finishbp_default.hit_count" "1.*" "check finishBP on default frame has been hit" +gdb_test "python print finishbp.is_valid()" "False.*"\ + "ensure that finish bp is invalid afer normal hit" + +# check FinishBreakpoint in main no allowed + +gdb_test "finish" "main.*" "return to main()" +gdb_test "python MyFinishBreakpoint (None, gdb.selected_frame ())" \ + "ValueError: \"FinishBreakpoint\" not meaningful in the outermost frame..*" \ + "check FinishBP not allowed in main" + +# +# Test FinishBreakpoint with no debug symbol +# + +clean_restart ${testfile} +gdb_load_shlibs ${lib_sl} + +gdb_test "source $python_file" "Python script imported.*" \ + "import python scripts" +set cond_line [gdb_get_line_number "Condition Break."] + +if ![runto_main] then { + fail "Cannot run to main." + return 0 +} + +gdb_test "print do_nothing" "no debug info.*" "ensure that shared lib has no debug info" +gdb_breakpoint "do_nothing" {temporary} +gdb_test "continue" "Temporary breakpoint .*in do_nothing.*" "continue to do_nothing" + +gdb_test "python finishBP = SimpleFinishBreakpoint(gdb.newest_frame())" \ + "SimpleFinishBreakpoint init" \ + "set finish breakpoint" +gdb_test "continue" "SimpleFinishBreakpoint stop.*" "check FinishBreakpoint hit" +gdb_test "python print finishBP.return_value" "None" "check return value without debug symbol" + +# +# Test FinishBreakpoint in function returned by longjmp +# + +clean_restart ${testfile} +gdb_load_shlibs ${lib_sl} + +gdb_test "source $python_file" "Python script imported.*" \ + "import python scripts" + +if ![runto call_longjmp_1] then { + perror "couldn't run to breakpoint call_longjmp" + continue +} + +gdb_test "python finishbp = SimpleFinishBreakpoint(gdb.newest_frame())" \ + "SimpleFinishBreakpoint init" \ + "set finish breakpoint" +gdb_test "break [gdb_get_line_number "after longjmp."]" "Breakpoint.* at .*" \ + "set BP after the jump" +gdb_test "continue" "SimpleFinishBreakpoint out of scope.*" \ + "check FinishBP out of scope notification" +gdb_test "python print finishbp.is_valid()" "False.*"\ + "ensure that finish bp is invalid afer out of scope notification" + +# +# Test FinishBreakpoint in BP condition evaluation +# (finish in dummy frame) +# + +clean_restart ${testfile} +gdb_load_shlibs ${lib_sl} + +gdb_test "source $python_file" "Python script imported.*" \ + "import python scripts" + + +if ![runto_main] then { + fail "Cannot run to main." + return 0 +} + +gdb_test "break ${cond_line} if test_1(i,8)" "Breakpoint .* at .*" \ + "set a conditional BP" +gdb_test "python TestBreakpoint()" "TestBreakpoint init" \ + "set FinishBP in a breakpoint condition" +gdb_test "continue" \ + "\"FinishBreakpoint\" cannot be set on a dummy frame.*" \ + "don't allow FinishBreakpoint on dummy frames" +gdb_test "print i" "8" "check stopped location" + +# +# Test FinishBreakpoint in BP condition evaluation +# (finish in normal frame) +# + +clean_restart ${testfile} +gdb_load_shlibs ${lib_sl} + +gdb_test "source $python_file" "Python script imported.*" \ + "import python scripts" + +if ![runto_main] then { + fail "Cannot run to main." + return 0 +} + +gdb_test "break ${cond_line} if test(i,8)" \ + "Breakpoint .* at .*" "set conditional BP" +gdb_test "python TestBreakpoint()" "TestBreakpoint init" "set BP in condition" + +gdb_test "continue" \ + "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.*" \ + "stop in condition function" + +gdb_test "continue" "Continuing.*" "finish condition evaluation" +gdb_test "continue" "Breakpoint.*" "stop at conditional breakpoint" +gdb_test "print i" "8" "check stopped location" + +# +# Test FinishBreakpoint in explicit inferior function call +# + +clean_restart ${testfile} +gdb_load_shlibs ${lib_sl} + +gdb_test "source $python_file" "Python script imported.*" \ + "import python scripts" + +if ![runto_main] then { + fail "Cannot run to main." + return 0 +} + +# return address in dummy frame + +gdb_test "python TestExplicitBreakpoint('increase_1')" "Breakpoint.*at.*" \ + "prepare TestExplicitBreakpoint" +gdb_test "print increase_1(&i)" \ + "\"FinishBreakpoint\" cannot be set on a dummy frame.*" \ + "don't allow FinishBreakpoint on dummy frames" + +# return address in normal frame + +delete_breakpoints +gdb_test "python TestExplicitBreakpoint(\"increase_1\")" "Breakpoint.*at.*" \ + "prepare TestExplicitBreakpoint" +gdb_test "print increase(&i)" \ + "SimpleFinishBreakpoint init.*SimpleFinishBreakpoint stop.*The program being debugged stopped while in a function called from GDB.*" \ + "FinishBP stop at during explicit function call" + + +# +# Test FinishBreakpoint when inferior exits +# + +if ![runto "test_exec_exit"] then { + fail "Cannot run to test_exec_exit." + return 0 +} + +gdb_test "python SimpleFinishBreakpoint(gdb.newest_frame())" "SimpleFinishBreakpoint init" "set FinishBP after the exit()" +gdb_test "continue" "SimpleFinishBreakpoint out of scope.*" "catch out of scope after exit" + +# +# Test FinishBreakpoint when inferior execs +# + +if ![runto "test_exec_exit"] then { + fail "Cannot run to test_exec_exit." + return 0 +} + +gdb_test_no_output "set var do_exit = 0" "switch to execve() test" +gdb_test "python SimpleFinishBreakpoint(gdb.newest_frame())" "SimpleFinishBreakpoint init" "set FinishBP after the exec" +gdb_test "catch exec" "Catchpoint.*\(exec\).*" "catch exec" +gdb_test "continue" "SimpleFinishBreakpoint out of scope.*" "catch out of scope after exec" \ No newline at end of file diff --git a/gdb/testsuite/gdb.python/py-finish-breakpoint.py b/gdb/testsuite/gdb.python/py-finish-breakpoint.py new file mode 100644 index 00000000000..dea2a73f4c5 --- /dev/null +++ b/gdb/testsuite/gdb.python/py-finish-breakpoint.py @@ -0,0 +1,89 @@ +# Copyright (C) 2011 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +# This file is part of the GDB testsuite. It tests python Finish +# Breakpoints. + +class MyFinishBreakpoint (gdb.FinishBreakpoint): + def __init__(self, val, frame): + gdb.FinishBreakpoint.__init__ (self, frame) + print "MyFinishBreakpoint init" + self.val = val + + def stop(self): + print "MyFinishBreakpoint stop with %d" % int (self.val.dereference ()) + print "return_value is: %d" % int (self.return_value) + gdb.execute ("where 1") + return True + + def out_of_scope(self): + print "MyFinishBreakpoint out of scope" + +class TestBreakpoint(gdb.Breakpoint): + def __init__(self): + gdb.Breakpoint.__init__ (self, spec="test_1", internal=1) + self.silent = True + self.count = 0 + print "TestBreakpoint init" + + def stop(self): + self.count += 1 + try: + TestFinishBreakpoint (gdb.newest_frame (), self.count) + except ValueError as e: + print e + return False + +class TestFinishBreakpoint (gdb.FinishBreakpoint): + def __init__ (self, frame, count): + self.count = count + gdb.FinishBreakpoint.__init__ (self, frame, internal=1) + + + def stop(self): + print "-->", self.number + if (self.count == 3): + print "test stop: %d" % self.count + return True + else: + print "test don't stop: %d" % self.count + return False + + + def out_of_scope(self): + print "test didn't finish: %d" % self.count + +class TestExplicitBreakpoint(gdb.Breakpoint): + def stop(self): + try: + SimpleFinishBreakpoint (gdb.newest_frame ()) + except ValueError as e: + print e + return False + +class SimpleFinishBreakpoint(gdb.FinishBreakpoint): + def __init__(self, frame): + gdb.FinishBreakpoint.__init__ (self, frame) + + print "SimpleFinishBreakpoint init" + + def stop(self): + print "SimpleFinishBreakpoint stop" + return True + + def out_of_scope(self): + print "SimpleFinishBreakpoint out of scope" + +print "Python script importedd" diff --git a/gdb/testsuite/gdb.python/py-finish-breakpoint2.cc b/gdb/testsuite/gdb.python/py-finish-breakpoint2.cc new file mode 100644 index 00000000000..a0eea06dbf9 --- /dev/null +++ b/gdb/testsuite/gdb.python/py-finish-breakpoint2.cc @@ -0,0 +1,59 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2011 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + + +#include + +void +throw_exception_1 (int e) +{ + throw new int (e); +} + +void +throw_exception (int e) +{ + throw_exception_1 (e); +} + +int +main (void) +{ + int i; + try + { + throw_exception_1 (10); + } + catch (const int *e) + { + std::cerr << "Exception #" << *e << std::endl; + } + i += 1; /* Break after exception 1. */ + + try + { + throw_exception (10); + } + catch (const int *e) + { + std::cerr << "Exception #" << *e << std::endl; + } + i += 1; /* Break after exception 2. */ + + return i; +} diff --git a/gdb/testsuite/gdb.python/py-finish-breakpoint2.exp b/gdb/testsuite/gdb.python/py-finish-breakpoint2.exp new file mode 100644 index 00000000000..433d1e63deb --- /dev/null +++ b/gdb/testsuite/gdb.python/py-finish-breakpoint2.exp @@ -0,0 +1,65 @@ +# Copyright (C) 2011 Free Software Foundation, Inc. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +# This file is part of the GDB testsuite. It tests the mechanism +# exposing values to Python. + +if $tracelevel then { + strace $tracelevel +} + +load_lib gdb-python.exp + +set testfile "py-finish-breakpoint2" +set srcfile ${testfile}.cc +set binfile ${objdir}/${subdir}/${testfile} +set pyfile ${srcdir}/${subdir}/${testfile}.py + +if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug c++}] != "" } { + untested "Couldn't compile ${srcfile}" + return -1 +} + +# Start with a fresh gdb. +gdb_exit +gdb_start +gdb_reinitialize_dir $srcdir/$subdir +gdb_load ${binfile} + +if ![runto_main] then { + fail "Cannot run to main." + return 0 +} + +# +# Check FinishBreakpoints against C++ exceptions +# + +gdb_breakpoint [gdb_get_line_number "Break after exception 2"] + +gdb_test "source $pyfile" ".*Python script imported.*" \ + "import python scripts" + +gdb_breakpoint "throw_exception_1" +gdb_test "continue" "Breakpoint .*throw_exception_1.*" "run to exception 1" + +gdb_test "python print len(gdb.breakpoints())" "3" "check BP count" +gdb_test "python ExceptionFinishBreakpoint(gdb.newest_frame())" "init ExceptionFinishBreakpoint" "set FinishBP after the exception" +gdb_test "continue" ".*stopped at ExceptionFinishBreakpoint.*" "check FinishBreakpoint in catch()" +gdb_test "python print len(gdb.breakpoints())" "3" "check finish BP removal" + +gdb_test "continue" ".*Breakpoint.* throw_exception_1.*" "continue to second exception" +gdb_test "python ExceptionFinishBreakpoint(gdb.newest_frame())" "init ExceptionFinishBreakpoint" "set FinishBP after the exception" +gdb_test "continue" ".*exception did not finish.*" "FinishBreakpoint with exception thrown not caught" diff --git a/gdb/testsuite/gdb.python/py-finish-breakpoint2.py b/gdb/testsuite/gdb.python/py-finish-breakpoint2.py new file mode 100644 index 00000000000..0fb6955bd9c --- /dev/null +++ b/gdb/testsuite/gdb.python/py-finish-breakpoint2.py @@ -0,0 +1,33 @@ +# Copyright (C) 2011 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +# This file is part of the GDB testsuite. It tests python Finish +# Breakpoints. + +class ExceptionFinishBreakpoint(gdb.FinishBreakpoint): + def __init__(self, frame): + gdb.FinishBreakpoint.__init__ (self, frame, internal=1) + self.silent = True; + print "init ExceptionFinishBreakpoint" + + def stop(self): + print "stopped at ExceptionFinishBreakpoint" + return True + + def out_of_scope(self): + print "exception did not finish ..." + + +print "Python script imported"