833d985d1c
This changes python_string_to_unicode, python_string_to_target_python_string, and host_string_to_python_string to return gdbpy_ref. gdb/ChangeLog 2018-11-04 Tom Tromey <tom@tromey.com> * python/python.c (gdbpy_parameter_value): Update. * python/python-internal.h (python_string_to_unicode) (python_string_to_target_python_string) (host_string_to_python_string): Return gdbpy_ref. * python/py-utils.c (python_string_to_unicode) (unicode_to_encoded_python_string) (unicode_to_target_python_string) (python_string_to_target_string) (python_string_to_target_python_string): Return gdbpy_ref. (python_string_to_host_string): Update. (host_string_to_python_string): Return gdbpy_ref. * python/py-symtab.c (stpy_get_filename, stpy_get_producer) (stpy_fullname): Update. * python/py-progspace.c (pspy_get_filename, pspy_solib_name): Update. * python/py-prettyprint.c (print_string_repr): Update. * python/py-objfile.c (objfpy_get_filename, objfpy_get_username) (objfpy_get_build_id): Update. * python/py-breakpoint.c (bppy_get_location) (bppy_get_expression, bppy_get_condition, bppy_get_commands): Update.
1297 lines
32 KiB
C
1297 lines
32 KiB
C
/* Python interface to breakpoints
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Copyright (C) 2008-2018 Free Software Foundation, Inc.
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This file is part of GDB.
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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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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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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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#include "defs.h"
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#include "value.h"
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#include "python-internal.h"
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#include "python.h"
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#include "charset.h"
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#include "breakpoint.h"
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#include "gdbcmd.h"
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#include "gdbthread.h"
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#include "observable.h"
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#include "cli/cli-script.h"
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#include "ada-lang.h"
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#include "arch-utils.h"
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#include "language.h"
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#include "location.h"
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#include "py-event.h"
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#include "linespec.h"
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/* Number of live breakpoints. */
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static int bppy_live;
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/* Variables used to pass information between the Breakpoint
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constructor and the breakpoint-created hook function. */
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gdbpy_breakpoint_object *bppy_pending_object;
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/* Function that is called when a Python condition is evaluated. */
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static const char stop_func[] = "stop";
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/* This is used to initialize various gdb.bp_* constants. */
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struct pybp_code
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{
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/* The name. */
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const char *name;
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/* The code. */
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int code;
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};
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/* Entries related to the type of user set breakpoints. */
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static struct pybp_code pybp_codes[] =
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{
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{ "BP_NONE", bp_none},
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{ "BP_BREAKPOINT", bp_breakpoint},
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{ "BP_WATCHPOINT", bp_watchpoint},
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{ "BP_HARDWARE_WATCHPOINT", bp_hardware_watchpoint},
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{ "BP_READ_WATCHPOINT", bp_read_watchpoint},
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{ "BP_ACCESS_WATCHPOINT", bp_access_watchpoint},
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{NULL} /* Sentinel. */
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};
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/* Entries related to the type of watchpoint. */
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static struct pybp_code pybp_watch_types[] =
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{
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{ "WP_READ", hw_read},
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{ "WP_WRITE", hw_write},
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{ "WP_ACCESS", hw_access},
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{NULL} /* Sentinel. */
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};
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/* Python function which checks the validity of a breakpoint object. */
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static PyObject *
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bppy_is_valid (PyObject *self, PyObject *args)
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{
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gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
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if (self_bp->bp)
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Py_RETURN_TRUE;
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Py_RETURN_FALSE;
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}
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/* Python function to test whether or not the breakpoint is enabled. */
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static PyObject *
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bppy_get_enabled (PyObject *self, void *closure)
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{
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gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
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BPPY_REQUIRE_VALID (self_bp);
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if (! self_bp->bp)
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Py_RETURN_FALSE;
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if (self_bp->bp->enable_state == bp_enabled)
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Py_RETURN_TRUE;
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Py_RETURN_FALSE;
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}
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/* Python function to test whether or not the breakpoint is silent. */
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static PyObject *
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bppy_get_silent (PyObject *self, void *closure)
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{
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gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
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BPPY_REQUIRE_VALID (self_bp);
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if (self_bp->bp->silent)
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Py_RETURN_TRUE;
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Py_RETURN_FALSE;
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}
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/* Python function to set the enabled state of a breakpoint. */
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static int
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bppy_set_enabled (PyObject *self, PyObject *newvalue, void *closure)
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{
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gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
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int cmp;
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BPPY_SET_REQUIRE_VALID (self_bp);
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if (newvalue == NULL)
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{
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PyErr_SetString (PyExc_TypeError,
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_("Cannot delete `enabled' attribute."));
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return -1;
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}
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else if (! PyBool_Check (newvalue))
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{
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PyErr_SetString (PyExc_TypeError,
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_("The value of `enabled' must be a boolean."));
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return -1;
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}
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cmp = PyObject_IsTrue (newvalue);
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if (cmp < 0)
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return -1;
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TRY
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{
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if (cmp == 1)
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enable_breakpoint (self_bp->bp);
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else
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disable_breakpoint (self_bp->bp);
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}
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CATCH (except, RETURN_MASK_ALL)
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{
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GDB_PY_SET_HANDLE_EXCEPTION (except);
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}
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END_CATCH
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return 0;
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}
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/* Python function to set the 'silent' state of a breakpoint. */
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static int
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bppy_set_silent (PyObject *self, PyObject *newvalue, void *closure)
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{
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gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
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int cmp;
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BPPY_SET_REQUIRE_VALID (self_bp);
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if (newvalue == NULL)
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{
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PyErr_SetString (PyExc_TypeError,
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_("Cannot delete `silent' attribute."));
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return -1;
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}
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else if (! PyBool_Check (newvalue))
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{
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PyErr_SetString (PyExc_TypeError,
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_("The value of `silent' must be a boolean."));
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return -1;
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}
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cmp = PyObject_IsTrue (newvalue);
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if (cmp < 0)
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return -1;
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else
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breakpoint_set_silent (self_bp->bp, cmp);
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return 0;
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}
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/* Python function to set the thread of a breakpoint. */
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static int
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bppy_set_thread (PyObject *self, PyObject *newvalue, void *closure)
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{
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gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
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long id;
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BPPY_SET_REQUIRE_VALID (self_bp);
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if (newvalue == NULL)
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{
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PyErr_SetString (PyExc_TypeError,
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_("Cannot delete `thread' attribute."));
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return -1;
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}
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else if (PyInt_Check (newvalue))
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{
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if (! gdb_py_int_as_long (newvalue, &id))
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return -1;
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if (!valid_global_thread_id (id))
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{
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PyErr_SetString (PyExc_RuntimeError,
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_("Invalid thread ID."));
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return -1;
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}
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}
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else if (newvalue == Py_None)
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id = -1;
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else
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{
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PyErr_SetString (PyExc_TypeError,
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_("The value of `thread' must be an integer or None."));
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return -1;
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}
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breakpoint_set_thread (self_bp->bp, id);
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return 0;
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}
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/* Python function to set the (Ada) task of a breakpoint. */
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static int
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bppy_set_task (PyObject *self, PyObject *newvalue, void *closure)
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{
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gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
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long id;
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int valid_id = 0;
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BPPY_SET_REQUIRE_VALID (self_bp);
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if (newvalue == NULL)
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{
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PyErr_SetString (PyExc_TypeError,
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_("Cannot delete `task' attribute."));
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return -1;
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}
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else if (PyInt_Check (newvalue))
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{
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if (! gdb_py_int_as_long (newvalue, &id))
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return -1;
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TRY
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{
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valid_id = valid_task_id (id);
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}
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CATCH (except, RETURN_MASK_ALL)
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{
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GDB_PY_SET_HANDLE_EXCEPTION (except);
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}
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END_CATCH
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if (! valid_id)
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{
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PyErr_SetString (PyExc_RuntimeError,
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_("Invalid task ID."));
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return -1;
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}
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}
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else if (newvalue == Py_None)
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id = 0;
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else
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{
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PyErr_SetString (PyExc_TypeError,
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_("The value of `task' must be an integer or None."));
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return -1;
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}
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breakpoint_set_task (self_bp->bp, id);
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return 0;
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}
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/* Python function which deletes the underlying GDB breakpoint. This
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triggers the breakpoint_deleted observer which will call
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gdbpy_breakpoint_deleted; that function cleans up the Python
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sections. */
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static PyObject *
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bppy_delete_breakpoint (PyObject *self, PyObject *args)
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{
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gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
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BPPY_REQUIRE_VALID (self_bp);
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TRY
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{
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delete_breakpoint (self_bp->bp);
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}
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CATCH (except, RETURN_MASK_ALL)
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{
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GDB_PY_HANDLE_EXCEPTION (except);
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}
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END_CATCH
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Py_RETURN_NONE;
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}
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/* Python function to set the ignore count of a breakpoint. */
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static int
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bppy_set_ignore_count (PyObject *self, PyObject *newvalue, void *closure)
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{
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gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
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long value;
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BPPY_SET_REQUIRE_VALID (self_bp);
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if (newvalue == NULL)
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{
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PyErr_SetString (PyExc_TypeError,
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_("Cannot delete `ignore_count' attribute."));
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return -1;
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}
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else if (! PyInt_Check (newvalue))
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{
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PyErr_SetString (PyExc_TypeError,
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_("The value of `ignore_count' must be an integer."));
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return -1;
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}
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if (! gdb_py_int_as_long (newvalue, &value))
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return -1;
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if (value < 0)
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value = 0;
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TRY
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{
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set_ignore_count (self_bp->number, (int) value, 0);
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}
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CATCH (except, RETURN_MASK_ALL)
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{
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GDB_PY_SET_HANDLE_EXCEPTION (except);
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}
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END_CATCH
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return 0;
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}
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/* Python function to set the hit count of a breakpoint. */
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static int
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bppy_set_hit_count (PyObject *self, PyObject *newvalue, void *closure)
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{
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gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
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BPPY_SET_REQUIRE_VALID (self_bp);
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if (newvalue == NULL)
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{
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PyErr_SetString (PyExc_TypeError,
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_("Cannot delete `hit_count' attribute."));
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return -1;
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}
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else
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{
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long value;
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if (! gdb_py_int_as_long (newvalue, &value))
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return -1;
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if (value != 0)
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{
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PyErr_SetString (PyExc_AttributeError,
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_("The value of `hit_count' must be zero."));
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return -1;
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}
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}
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self_bp->bp->hit_count = 0;
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return 0;
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}
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/* Python function to get the location of a breakpoint. */
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static PyObject *
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bppy_get_location (PyObject *self, void *closure)
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{
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const char *str;
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gdbpy_breakpoint_object *obj = (gdbpy_breakpoint_object *) self;
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BPPY_REQUIRE_VALID (obj);
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if (obj->bp->type != bp_breakpoint)
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Py_RETURN_NONE;
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struct event_location *location = obj->bp->location.get ();
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/* "catch throw" makes a breakpoint of type bp_breakpoint that does
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not have a location. */
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if (location == nullptr)
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Py_RETURN_NONE;
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str = event_location_to_string (location);
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if (! str)
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str = "";
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return host_string_to_python_string (str).release ();
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}
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/* Python function to get the breakpoint expression. */
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static PyObject *
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bppy_get_expression (PyObject *self, void *closure)
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{
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const char *str;
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gdbpy_breakpoint_object *obj = (gdbpy_breakpoint_object *) self;
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struct watchpoint *wp;
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BPPY_REQUIRE_VALID (obj);
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if (!is_watchpoint (obj->bp))
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Py_RETURN_NONE;
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wp = (struct watchpoint *) obj->bp;
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str = wp->exp_string;
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if (! str)
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str = "";
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return host_string_to_python_string (str).release ();
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}
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/* Python function to get the condition expression of a breakpoint. */
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static PyObject *
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bppy_get_condition (PyObject *self, void *closure)
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{
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char *str;
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gdbpy_breakpoint_object *obj = (gdbpy_breakpoint_object *) self;
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BPPY_REQUIRE_VALID (obj);
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str = obj->bp->cond_string;
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if (! str)
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Py_RETURN_NONE;
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return host_string_to_python_string (str).release ();
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}
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|
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/* Returns 0 on success. Returns -1 on error, with a python exception set.
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*/
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static int
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bppy_set_condition (PyObject *self, PyObject *newvalue, void *closure)
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{
|
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gdb::unique_xmalloc_ptr<char> exp_holder;
|
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const char *exp = NULL;
|
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gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
|
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struct gdb_exception except = exception_none;
|
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|
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BPPY_SET_REQUIRE_VALID (self_bp);
|
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|
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if (newvalue == NULL)
|
||
{
|
||
PyErr_SetString (PyExc_TypeError,
|
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_("Cannot delete `condition' attribute."));
|
||
return -1;
|
||
}
|
||
else if (newvalue == Py_None)
|
||
exp = "";
|
||
else
|
||
{
|
||
exp_holder = python_string_to_host_string (newvalue);
|
||
if (exp_holder == NULL)
|
||
return -1;
|
||
exp = exp_holder.get ();
|
||
}
|
||
|
||
TRY
|
||
{
|
||
set_breakpoint_condition (self_bp->bp, exp, 0);
|
||
}
|
||
CATCH (ex, RETURN_MASK_ALL)
|
||
{
|
||
except = ex;
|
||
}
|
||
END_CATCH
|
||
|
||
GDB_PY_SET_HANDLE_EXCEPTION (except);
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Python function to get the commands attached to a breakpoint. */
|
||
static PyObject *
|
||
bppy_get_commands (PyObject *self, void *closure)
|
||
{
|
||
gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
|
||
struct breakpoint *bp = self_bp->bp;
|
||
|
||
BPPY_REQUIRE_VALID (self_bp);
|
||
|
||
if (! self_bp->bp->commands)
|
||
Py_RETURN_NONE;
|
||
|
||
string_file stb;
|
||
|
||
current_uiout->redirect (&stb);
|
||
TRY
|
||
{
|
||
print_command_lines (current_uiout, breakpoint_commands (bp), 0);
|
||
}
|
||
CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
current_uiout->redirect (NULL);
|
||
gdbpy_convert_exception (except);
|
||
return NULL;
|
||
}
|
||
END_CATCH
|
||
|
||
current_uiout->redirect (NULL);
|
||
return host_string_to_python_string (stb.c_str ()).release ();
|
||
}
|
||
|
||
/* Set the commands attached to a breakpoint. Returns 0 on success.
|
||
Returns -1 on error, with a python exception set. */
|
||
static int
|
||
bppy_set_commands (PyObject *self, PyObject *newvalue, void *closure)
|
||
{
|
||
gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
|
||
struct gdb_exception except = exception_none;
|
||
|
||
BPPY_SET_REQUIRE_VALID (self_bp);
|
||
|
||
gdb::unique_xmalloc_ptr<char> commands
|
||
(python_string_to_host_string (newvalue));
|
||
if (commands == nullptr)
|
||
return -1;
|
||
|
||
TRY
|
||
{
|
||
bool first = true;
|
||
char *save_ptr = nullptr;
|
||
auto reader
|
||
= [&] ()
|
||
{
|
||
const char *result = strtok_r (first ? commands.get () : nullptr,
|
||
"\n", &save_ptr);
|
||
first = false;
|
||
return result;
|
||
};
|
||
|
||
counted_command_line lines = read_command_lines_1 (reader, 1, nullptr);
|
||
breakpoint_set_commands (self_bp->bp, std::move (lines));
|
||
}
|
||
CATCH (ex, RETURN_MASK_ALL)
|
||
{
|
||
except = ex;
|
||
}
|
||
END_CATCH
|
||
|
||
GDB_PY_SET_HANDLE_EXCEPTION (except);
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Python function to get the breakpoint type. */
|
||
static PyObject *
|
||
bppy_get_type (PyObject *self, void *closure)
|
||
{
|
||
gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
|
||
|
||
BPPY_REQUIRE_VALID (self_bp);
|
||
|
||
return PyInt_FromLong (self_bp->bp->type);
|
||
}
|
||
|
||
/* Python function to get the visibility of the breakpoint. */
|
||
|
||
static PyObject *
|
||
bppy_get_visibility (PyObject *self, void *closure)
|
||
{
|
||
gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
|
||
|
||
BPPY_REQUIRE_VALID (self_bp);
|
||
|
||
if (user_breakpoint_p (self_bp->bp))
|
||
Py_RETURN_TRUE;
|
||
|
||
Py_RETURN_FALSE;
|
||
}
|
||
|
||
/* Python function to determine if the breakpoint is a temporary
|
||
breakpoint. */
|
||
|
||
static PyObject *
|
||
bppy_get_temporary (PyObject *self, void *closure)
|
||
{
|
||
gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
|
||
|
||
BPPY_REQUIRE_VALID (self_bp);
|
||
|
||
if (self_bp->bp->disposition == disp_del
|
||
|| self_bp->bp->disposition == disp_del_at_next_stop)
|
||
Py_RETURN_TRUE;
|
||
|
||
Py_RETURN_FALSE;
|
||
}
|
||
|
||
/* Python function to determine if the breakpoint is a pending
|
||
breakpoint. */
|
||
|
||
static PyObject *
|
||
bppy_get_pending (PyObject *self, void *closure)
|
||
{
|
||
gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
|
||
|
||
BPPY_REQUIRE_VALID (self_bp);
|
||
|
||
if (is_watchpoint (self_bp->bp))
|
||
Py_RETURN_FALSE;
|
||
if (pending_breakpoint_p (self_bp->bp))
|
||
Py_RETURN_TRUE;
|
||
|
||
Py_RETURN_FALSE;
|
||
}
|
||
|
||
/* Python function to get the breakpoint's number. */
|
||
static PyObject *
|
||
bppy_get_number (PyObject *self, void *closure)
|
||
{
|
||
gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
|
||
|
||
BPPY_REQUIRE_VALID (self_bp);
|
||
|
||
return PyInt_FromLong (self_bp->number);
|
||
}
|
||
|
||
/* Python function to get the breakpoint's thread ID. */
|
||
static PyObject *
|
||
bppy_get_thread (PyObject *self, void *closure)
|
||
{
|
||
gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
|
||
|
||
BPPY_REQUIRE_VALID (self_bp);
|
||
|
||
if (self_bp->bp->thread == -1)
|
||
Py_RETURN_NONE;
|
||
|
||
return PyInt_FromLong (self_bp->bp->thread);
|
||
}
|
||
|
||
/* Python function to get the breakpoint's task ID (in Ada). */
|
||
static PyObject *
|
||
bppy_get_task (PyObject *self, void *closure)
|
||
{
|
||
gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
|
||
|
||
BPPY_REQUIRE_VALID (self_bp);
|
||
|
||
if (self_bp->bp->task == 0)
|
||
Py_RETURN_NONE;
|
||
|
||
return PyInt_FromLong (self_bp->bp->task);
|
||
}
|
||
|
||
/* Python function to get the breakpoint's hit count. */
|
||
static PyObject *
|
||
bppy_get_hit_count (PyObject *self, void *closure)
|
||
{
|
||
gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
|
||
|
||
BPPY_REQUIRE_VALID (self_bp);
|
||
|
||
return PyInt_FromLong (self_bp->bp->hit_count);
|
||
}
|
||
|
||
/* Python function to get the breakpoint's ignore count. */
|
||
static PyObject *
|
||
bppy_get_ignore_count (PyObject *self, void *closure)
|
||
{
|
||
gdbpy_breakpoint_object *self_bp = (gdbpy_breakpoint_object *) self;
|
||
|
||
BPPY_REQUIRE_VALID (self_bp);
|
||
|
||
return PyInt_FromLong (self_bp->bp->ignore_count);
|
||
}
|
||
|
||
/* Internal function to validate the Python parameters/keywords
|
||
provided to bppy_init. */
|
||
|
||
static int
|
||
bppy_init_validate_args (const char *spec, char *source,
|
||
char *function, char *label,
|
||
char *line, enum bptype type)
|
||
{
|
||
/* If spec is defined, ensure that none of the explicit location
|
||
keywords are also defined. */
|
||
if (spec != NULL)
|
||
{
|
||
if (source != NULL || function != NULL || label != NULL || line != NULL)
|
||
{
|
||
PyErr_SetString (PyExc_RuntimeError,
|
||
_("Breakpoints specified with spec cannot "
|
||
"have source, function, label or line defined."));
|
||
return -1;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* If spec isn't defined, ensure that the user is not trying to
|
||
define a watchpoint with an explicit location. */
|
||
if (type == bp_watchpoint)
|
||
{
|
||
PyErr_SetString (PyExc_RuntimeError,
|
||
_("Watchpoints cannot be set by explicit "
|
||
"location parameters."));
|
||
return -1;
|
||
}
|
||
else
|
||
{
|
||
/* Otherwise, ensure some explicit locations are defined. */
|
||
if (source == NULL && function == NULL && label == NULL
|
||
&& line == NULL)
|
||
{
|
||
PyErr_SetString (PyExc_RuntimeError,
|
||
_("Neither spec nor explicit location set."));
|
||
return -1;
|
||
}
|
||
/* Finally, if source is specified, ensure that line, label
|
||
or function are specified too. */
|
||
if (source != NULL && function == NULL && label == NULL
|
||
&& line == NULL)
|
||
{
|
||
PyErr_SetString (PyExc_RuntimeError,
|
||
_("Specifying a source must also include a "
|
||
"line, label or function."));
|
||
return -1;
|
||
}
|
||
}
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
/* Python function to create a new breakpoint. */
|
||
static int
|
||
bppy_init (PyObject *self, PyObject *args, PyObject *kwargs)
|
||
{
|
||
static const char *keywords[] = { "spec", "type", "wp_class", "internal",
|
||
"temporary","source", "function",
|
||
"label", "line", "qualified", NULL };
|
||
const char *spec = NULL;
|
||
enum bptype type = bp_breakpoint;
|
||
int access_type = hw_write;
|
||
PyObject *internal = NULL;
|
||
PyObject *temporary = NULL;
|
||
PyObject *lineobj = NULL;;
|
||
int internal_bp = 0;
|
||
int temporary_bp = 0;
|
||
gdb::unique_xmalloc_ptr<char> line;
|
||
char *label = NULL;
|
||
char *source = NULL;
|
||
char *function = NULL;
|
||
PyObject * qualified = NULL;
|
||
|
||
if (!gdb_PyArg_ParseTupleAndKeywords (args, kwargs, "|siiOOsssOO", keywords,
|
||
&spec, &type, &access_type,
|
||
&internal,
|
||
&temporary, &source,
|
||
&function, &label, &lineobj,
|
||
&qualified))
|
||
return -1;
|
||
|
||
|
||
if (lineobj != NULL)
|
||
{
|
||
if (PyInt_Check (lineobj))
|
||
line.reset (xstrprintf ("%ld", PyInt_AsLong (lineobj)));
|
||
else if (PyString_Check (lineobj))
|
||
line = python_string_to_host_string (lineobj);
|
||
else
|
||
{
|
||
PyErr_SetString (PyExc_RuntimeError,
|
||
_("Line keyword should be an integer or a string. "));
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
if (internal)
|
||
{
|
||
internal_bp = PyObject_IsTrue (internal);
|
||
if (internal_bp == -1)
|
||
return -1;
|
||
}
|
||
|
||
if (temporary != NULL)
|
||
{
|
||
temporary_bp = PyObject_IsTrue (temporary);
|
||
if (temporary_bp == -1)
|
||
return -1;
|
||
}
|
||
|
||
if (bppy_init_validate_args (spec, source, function, label, line.get (),
|
||
type) == -1)
|
||
return -1;
|
||
|
||
bppy_pending_object = (gdbpy_breakpoint_object *) self;
|
||
bppy_pending_object->number = -1;
|
||
bppy_pending_object->bp = NULL;
|
||
|
||
TRY
|
||
{
|
||
switch (type)
|
||
{
|
||
case bp_breakpoint:
|
||
{
|
||
event_location_up location;
|
||
symbol_name_match_type func_name_match_type
|
||
= (qualified != NULL && PyObject_IsTrue (qualified)
|
||
? symbol_name_match_type::FULL
|
||
: symbol_name_match_type::WILD);
|
||
|
||
if (spec != NULL)
|
||
{
|
||
gdb::unique_xmalloc_ptr<char>
|
||
copy_holder (xstrdup (skip_spaces (spec)));
|
||
const char *copy = copy_holder.get ();
|
||
|
||
location = string_to_event_location (©,
|
||
current_language,
|
||
func_name_match_type);
|
||
}
|
||
else
|
||
{
|
||
struct explicit_location explicit_loc;
|
||
|
||
initialize_explicit_location (&explicit_loc);
|
||
explicit_loc.source_filename = source;
|
||
explicit_loc.function_name = function;
|
||
explicit_loc.label_name = label;
|
||
|
||
if (line != NULL)
|
||
explicit_loc.line_offset =
|
||
linespec_parse_line_offset (line.get ());
|
||
|
||
explicit_loc.func_name_match_type = func_name_match_type;
|
||
|
||
location = new_explicit_location (&explicit_loc);
|
||
}
|
||
|
||
create_breakpoint (python_gdbarch,
|
||
location.get (), NULL, -1, NULL,
|
||
0,
|
||
temporary_bp, bp_breakpoint,
|
||
0,
|
||
AUTO_BOOLEAN_TRUE,
|
||
&bkpt_breakpoint_ops,
|
||
0, 1, internal_bp, 0);
|
||
break;
|
||
}
|
||
case bp_watchpoint:
|
||
{
|
||
gdb::unique_xmalloc_ptr<char>
|
||
copy_holder (xstrdup (skip_spaces (spec)));
|
||
char *copy = copy_holder.get ();
|
||
|
||
if (access_type == hw_write)
|
||
watch_command_wrapper (copy, 0, internal_bp);
|
||
else if (access_type == hw_access)
|
||
awatch_command_wrapper (copy, 0, internal_bp);
|
||
else if (access_type == hw_read)
|
||
rwatch_command_wrapper (copy, 0, internal_bp);
|
||
else
|
||
error(_("Cannot understand watchpoint access type."));
|
||
break;
|
||
}
|
||
default:
|
||
error(_("Do not understand breakpoint type to set."));
|
||
}
|
||
}
|
||
CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
bppy_pending_object = NULL;
|
||
PyErr_Format (except.reason == RETURN_QUIT
|
||
? PyExc_KeyboardInterrupt : PyExc_RuntimeError,
|
||
"%s", except.message);
|
||
return -1;
|
||
}
|
||
END_CATCH
|
||
|
||
BPPY_SET_REQUIRE_VALID ((gdbpy_breakpoint_object *) self);
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
static int
|
||
build_bp_list (struct breakpoint *b, void *arg)
|
||
{
|
||
PyObject *list = (PyObject *) arg;
|
||
PyObject *bp = (PyObject *) b->py_bp_object;
|
||
int iserr = 0;
|
||
|
||
/* Not all breakpoints will have a companion Python object.
|
||
Only breakpoints that were created via bppy_new, or
|
||
breakpoints that were created externally and are tracked by
|
||
the Python Scripting API. */
|
||
if (bp)
|
||
iserr = PyList_Append (list, bp);
|
||
|
||
if (iserr == -1)
|
||
return 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Static function to return a tuple holding all breakpoints. */
|
||
|
||
PyObject *
|
||
gdbpy_breakpoints (PyObject *self, PyObject *args)
|
||
{
|
||
if (bppy_live == 0)
|
||
return PyTuple_New (0);
|
||
|
||
gdbpy_ref<> list (PyList_New (0));
|
||
if (list == NULL)
|
||
return NULL;
|
||
|
||
/* If iterate_over_breakpoints returns non NULL it signals an error
|
||
condition. In that case abandon building the list and return
|
||
NULL. */
|
||
if (iterate_over_breakpoints (build_bp_list, list.get ()) != NULL)
|
||
return NULL;
|
||
|
||
return PyList_AsTuple (list.get ());
|
||
}
|
||
|
||
/* Call the "stop" method (if implemented) in the breakpoint
|
||
class. If the method returns True, the inferior will be
|
||
stopped at the breakpoint. Otherwise the inferior will be
|
||
allowed to continue. */
|
||
|
||
enum ext_lang_bp_stop
|
||
gdbpy_breakpoint_cond_says_stop (const struct extension_language_defn *extlang,
|
||
struct breakpoint *b)
|
||
{
|
||
int stop;
|
||
struct gdbpy_breakpoint_object *bp_obj = b->py_bp_object;
|
||
PyObject *py_bp = (PyObject *) bp_obj;
|
||
struct gdbarch *garch;
|
||
|
||
if (bp_obj == NULL)
|
||
return EXT_LANG_BP_STOP_UNSET;
|
||
|
||
stop = -1;
|
||
garch = b->gdbarch ? b->gdbarch : get_current_arch ();
|
||
|
||
gdbpy_enter enter_py (garch, current_language);
|
||
|
||
if (bp_obj->is_finish_bp)
|
||
bpfinishpy_pre_stop_hook (bp_obj);
|
||
|
||
if (PyObject_HasAttrString (py_bp, stop_func))
|
||
{
|
||
gdbpy_ref<> result (PyObject_CallMethod (py_bp, stop_func, NULL));
|
||
|
||
stop = 1;
|
||
if (result != NULL)
|
||
{
|
||
int evaluate = PyObject_IsTrue (result.get ());
|
||
|
||
if (evaluate == -1)
|
||
gdbpy_print_stack ();
|
||
|
||
/* If the "stop" function returns False that means
|
||
the Python breakpoint wants GDB to continue. */
|
||
if (! evaluate)
|
||
stop = 0;
|
||
}
|
||
else
|
||
gdbpy_print_stack ();
|
||
}
|
||
|
||
if (bp_obj->is_finish_bp)
|
||
bpfinishpy_post_stop_hook (bp_obj);
|
||
|
||
if (stop < 0)
|
||
return EXT_LANG_BP_STOP_UNSET;
|
||
return stop ? EXT_LANG_BP_STOP_YES : EXT_LANG_BP_STOP_NO;
|
||
}
|
||
|
||
/* Checks if the "stop" method exists in this breakpoint.
|
||
Used by condition_command to ensure mutual exclusion of breakpoint
|
||
conditions. */
|
||
|
||
int
|
||
gdbpy_breakpoint_has_cond (const struct extension_language_defn *extlang,
|
||
struct breakpoint *b)
|
||
{
|
||
PyObject *py_bp;
|
||
struct gdbarch *garch;
|
||
|
||
if (b->py_bp_object == NULL)
|
||
return 0;
|
||
|
||
py_bp = (PyObject *) b->py_bp_object;
|
||
garch = b->gdbarch ? b->gdbarch : get_current_arch ();
|
||
|
||
gdbpy_enter enter_py (garch, current_language);
|
||
return PyObject_HasAttrString (py_bp, stop_func);
|
||
}
|
||
|
||
|
||
|
||
/* Event callback functions. */
|
||
|
||
/* Callback that is used when a breakpoint is created. This function
|
||
will create a new Python breakpoint object. */
|
||
static void
|
||
gdbpy_breakpoint_created (struct breakpoint *bp)
|
||
{
|
||
gdbpy_breakpoint_object *newbp;
|
||
PyGILState_STATE state;
|
||
|
||
if (!user_breakpoint_p (bp) && bppy_pending_object == NULL)
|
||
return;
|
||
|
||
if (bp->type != bp_breakpoint
|
||
&& bp->type != bp_watchpoint
|
||
&& bp->type != bp_hardware_watchpoint
|
||
&& bp->type != bp_read_watchpoint
|
||
&& bp->type != bp_access_watchpoint)
|
||
return;
|
||
|
||
state = PyGILState_Ensure ();
|
||
|
||
if (bppy_pending_object)
|
||
{
|
||
newbp = bppy_pending_object;
|
||
bppy_pending_object = NULL;
|
||
}
|
||
else
|
||
newbp = PyObject_New (gdbpy_breakpoint_object, &breakpoint_object_type);
|
||
if (newbp)
|
||
{
|
||
newbp->number = bp->number;
|
||
newbp->bp = bp;
|
||
newbp->bp->py_bp_object = newbp;
|
||
newbp->is_finish_bp = 0;
|
||
Py_INCREF (newbp);
|
||
++bppy_live;
|
||
}
|
||
else
|
||
{
|
||
PyErr_SetString (PyExc_RuntimeError,
|
||
_("Error while creating breakpoint from GDB."));
|
||
gdbpy_print_stack ();
|
||
}
|
||
|
||
if (!evregpy_no_listeners_p (gdb_py_events.breakpoint_created))
|
||
{
|
||
if (evpy_emit_event ((PyObject *) newbp,
|
||
gdb_py_events.breakpoint_created) < 0)
|
||
gdbpy_print_stack ();
|
||
}
|
||
|
||
PyGILState_Release (state);
|
||
}
|
||
|
||
/* Callback that is used when a breakpoint is deleted. This will
|
||
invalidate the corresponding Python object. */
|
||
static void
|
||
gdbpy_breakpoint_deleted (struct breakpoint *b)
|
||
{
|
||
int num = b->number;
|
||
PyGILState_STATE state;
|
||
struct breakpoint *bp = NULL;
|
||
|
||
state = PyGILState_Ensure ();
|
||
bp = get_breakpoint (num);
|
||
if (bp)
|
||
{
|
||
gdbpy_ref<gdbpy_breakpoint_object> bp_obj (bp->py_bp_object);
|
||
if (bp_obj != NULL)
|
||
{
|
||
if (!evregpy_no_listeners_p (gdb_py_events.breakpoint_deleted))
|
||
{
|
||
if (evpy_emit_event ((PyObject *) bp_obj.get (),
|
||
gdb_py_events.breakpoint_deleted) < 0)
|
||
gdbpy_print_stack ();
|
||
}
|
||
|
||
bp_obj->bp = NULL;
|
||
--bppy_live;
|
||
}
|
||
}
|
||
PyGILState_Release (state);
|
||
}
|
||
|
||
/* Callback that is used when a breakpoint is modified. */
|
||
|
||
static void
|
||
gdbpy_breakpoint_modified (struct breakpoint *b)
|
||
{
|
||
int num = b->number;
|
||
PyGILState_STATE state;
|
||
struct breakpoint *bp = NULL;
|
||
|
||
state = PyGILState_Ensure ();
|
||
bp = get_breakpoint (num);
|
||
if (bp)
|
||
{
|
||
PyObject *bp_obj = (PyObject *) bp->py_bp_object;
|
||
if (bp_obj)
|
||
{
|
||
if (!evregpy_no_listeners_p (gdb_py_events.breakpoint_modified))
|
||
{
|
||
if (evpy_emit_event (bp_obj,
|
||
gdb_py_events.breakpoint_modified) < 0)
|
||
gdbpy_print_stack ();
|
||
}
|
||
}
|
||
}
|
||
PyGILState_Release (state);
|
||
}
|
||
|
||
|
||
|
||
/* Initialize the Python breakpoint code. */
|
||
int
|
||
gdbpy_initialize_breakpoints (void)
|
||
{
|
||
int i;
|
||
|
||
breakpoint_object_type.tp_new = PyType_GenericNew;
|
||
if (PyType_Ready (&breakpoint_object_type) < 0)
|
||
return -1;
|
||
|
||
if (gdb_pymodule_addobject (gdb_module, "Breakpoint",
|
||
(PyObject *) &breakpoint_object_type) < 0)
|
||
return -1;
|
||
|
||
gdb::observers::breakpoint_created.attach (gdbpy_breakpoint_created);
|
||
gdb::observers::breakpoint_deleted.attach (gdbpy_breakpoint_deleted);
|
||
gdb::observers::breakpoint_modified.attach (gdbpy_breakpoint_modified);
|
||
|
||
/* Add breakpoint types constants. */
|
||
for (i = 0; pybp_codes[i].name; ++i)
|
||
{
|
||
if (PyModule_AddIntConstant (gdb_module,
|
||
/* Cast needed for Python 2.4. */
|
||
(char *) pybp_codes[i].name,
|
||
pybp_codes[i].code) < 0)
|
||
return -1;
|
||
}
|
||
|
||
/* Add watchpoint types constants. */
|
||
for (i = 0; pybp_watch_types[i].name; ++i)
|
||
{
|
||
if (PyModule_AddIntConstant (gdb_module,
|
||
/* Cast needed for Python 2.4. */
|
||
(char *) pybp_watch_types[i].name,
|
||
pybp_watch_types[i].code) < 0)
|
||
return -1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
/* Helper function that overrides this Python object's
|
||
PyObject_GenericSetAttr to allow extra validation of the attribute
|
||
being set. */
|
||
|
||
static int
|
||
local_setattro (PyObject *self, PyObject *name, PyObject *v)
|
||
{
|
||
gdbpy_breakpoint_object *obj = (gdbpy_breakpoint_object *) self;
|
||
gdb::unique_xmalloc_ptr<char> attr (python_string_to_host_string (name));
|
||
|
||
if (attr == NULL)
|
||
return -1;
|
||
|
||
/* If the attribute trying to be set is the "stop" method,
|
||
but we already have a condition set in the CLI or other extension
|
||
language, disallow this operation. */
|
||
if (strcmp (attr.get (), stop_func) == 0)
|
||
{
|
||
const struct extension_language_defn *extlang = NULL;
|
||
|
||
if (obj->bp->cond_string != NULL)
|
||
extlang = get_ext_lang_defn (EXT_LANG_GDB);
|
||
if (extlang == NULL)
|
||
extlang = get_breakpoint_cond_ext_lang (obj->bp, EXT_LANG_PYTHON);
|
||
if (extlang != NULL)
|
||
{
|
||
std::string error_text
|
||
= string_printf (_("Only one stop condition allowed. There is"
|
||
" currently a %s stop condition defined for"
|
||
" this breakpoint."),
|
||
ext_lang_capitalized_name (extlang));
|
||
PyErr_SetString (PyExc_RuntimeError, error_text.c_str ());
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
return PyObject_GenericSetAttr ((PyObject *)self, name, v);
|
||
}
|
||
|
||
static gdb_PyGetSetDef breakpoint_object_getset[] = {
|
||
{ "enabled", bppy_get_enabled, bppy_set_enabled,
|
||
"Boolean telling whether the breakpoint is enabled.", NULL },
|
||
{ "silent", bppy_get_silent, bppy_set_silent,
|
||
"Boolean telling whether the breakpoint is silent.", NULL },
|
||
{ "thread", bppy_get_thread, bppy_set_thread,
|
||
"Thread ID for the breakpoint.\n\
|
||
If the value is a thread ID (integer), then this is a thread-specific breakpoint.\n\
|
||
If the value is None, then this breakpoint is not thread-specific.\n\
|
||
No other type of value can be used.", NULL },
|
||
{ "task", bppy_get_task, bppy_set_task,
|
||
"Thread ID for the breakpoint.\n\
|
||
If the value is a task ID (integer), then this is an Ada task-specific breakpoint.\n\
|
||
If the value is None, then this breakpoint is not task-specific.\n\
|
||
No other type of value can be used.", NULL },
|
||
{ "ignore_count", bppy_get_ignore_count, bppy_set_ignore_count,
|
||
"Number of times this breakpoint should be automatically continued.",
|
||
NULL },
|
||
{ "number", bppy_get_number, NULL,
|
||
"Breakpoint's number assigned by GDB.", NULL },
|
||
{ "hit_count", bppy_get_hit_count, bppy_set_hit_count,
|
||
"Number of times the breakpoint has been hit.\n\
|
||
Can be set to zero to clear the count. No other value is valid\n\
|
||
when setting this property.", NULL },
|
||
{ "location", bppy_get_location, NULL,
|
||
"Location of the breakpoint, as specified by the user.", NULL},
|
||
{ "expression", bppy_get_expression, NULL,
|
||
"Expression of the breakpoint, as specified by the user.", NULL},
|
||
{ "condition", bppy_get_condition, bppy_set_condition,
|
||
"Condition of the breakpoint, as specified by the user,\
|
||
or None if no condition set."},
|
||
{ "commands", bppy_get_commands, bppy_set_commands,
|
||
"Commands of the breakpoint, as specified by the user."},
|
||
{ "type", bppy_get_type, NULL,
|
||
"Type of breakpoint."},
|
||
{ "visible", bppy_get_visibility, NULL,
|
||
"Whether the breakpoint is visible to the user."},
|
||
{ "temporary", bppy_get_temporary, NULL,
|
||
"Whether this breakpoint is a temporary breakpoint."},
|
||
{ "pending", bppy_get_pending, NULL,
|
||
"Whether this breakpoint is a pending breakpoint."},
|
||
{ NULL } /* Sentinel. */
|
||
};
|
||
|
||
static PyMethodDef breakpoint_object_methods[] =
|
||
{
|
||
{ "is_valid", bppy_is_valid, METH_NOARGS,
|
||
"Return true if this breakpoint is valid, false if not." },
|
||
{ "delete", bppy_delete_breakpoint, METH_NOARGS,
|
||
"Delete the underlying GDB breakpoint." },
|
||
{ NULL } /* Sentinel. */
|
||
};
|
||
|
||
PyTypeObject breakpoint_object_type =
|
||
{
|
||
PyVarObject_HEAD_INIT (NULL, 0)
|
||
"gdb.Breakpoint", /*tp_name*/
|
||
sizeof (gdbpy_breakpoint_object), /*tp_basicsize*/
|
||
0, /*tp_itemsize*/
|
||
0, /*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*/
|
||
(setattrofunc)local_setattro, /*tp_setattro */
|
||
0, /*tp_as_buffer*/
|
||
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/
|
||
"GDB breakpoint object", /* tp_doc */
|
||
0, /* tp_traverse */
|
||
0, /* tp_clear */
|
||
0, /* tp_richcompare */
|
||
0, /* tp_weaklistoffset */
|
||
0, /* tp_iter */
|
||
0, /* tp_iternext */
|
||
breakpoint_object_methods, /* tp_methods */
|
||
0, /* tp_members */
|
||
breakpoint_object_getset, /* tp_getset */
|
||
0, /* tp_base */
|
||
0, /* tp_dict */
|
||
0, /* tp_descr_get */
|
||
0, /* tp_descr_set */
|
||
0, /* tp_dictoffset */
|
||
bppy_init, /* tp_init */
|
||
0, /* tp_alloc */
|
||
};
|