1022 lines
25 KiB
C
1022 lines
25 KiB
C
/* Python interface to breakpoints
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Copyright (C) 2008-2013 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 "exceptions.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 "observer.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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/* 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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breakpoint_object *bppy_pending_object;
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/* Function that is called when a Python condition is evaluated. */
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static char * const 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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breakpoint_object *self_bp = (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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breakpoint_object *self_bp = (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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breakpoint_object *self_bp = (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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breakpoint_object *self_bp = (breakpoint_object *) self;
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int cmp;
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volatile struct gdb_exception except;
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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_CATCH (except, RETURN_MASK_ALL)
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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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GDB_PY_SET_HANDLE_EXCEPTION (except);
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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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breakpoint_object *self_bp = (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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breakpoint_object *self_bp = (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_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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breakpoint_object *self_bp = (breakpoint_object *) self;
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long id;
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int valid_id = 0;
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volatile struct gdb_exception except;
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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_CATCH (except, RETURN_MASK_ALL)
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{
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valid_id = valid_task_id (id);
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}
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GDB_PY_SET_HANDLE_EXCEPTION (except);
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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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breakpoint_object *self_bp = (breakpoint_object *) self;
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volatile struct gdb_exception except;
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BPPY_REQUIRE_VALID (self_bp);
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TRY_CATCH (except, RETURN_MASK_ALL)
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{
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delete_breakpoint (self_bp->bp);
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}
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GDB_PY_HANDLE_EXCEPTION (except);
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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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breakpoint_object *self_bp = (breakpoint_object *) self;
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long value;
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volatile struct gdb_exception except;
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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_CATCH (except, RETURN_MASK_ALL)
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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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GDB_PY_SET_HANDLE_EXCEPTION (except);
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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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breakpoint_object *self_bp = (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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char *str;
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breakpoint_object *obj = (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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str = obj->bp->addr_string;
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if (! str)
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str = "";
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return PyString_Decode (str, strlen (str), host_charset (), NULL);
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}
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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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char *str;
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breakpoint_object *obj = (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 PyString_Decode (str, strlen (str), host_charset (), NULL);
|
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}
|
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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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breakpoint_object *obj = (breakpoint_object *) self;
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|
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BPPY_REQUIRE_VALID (obj);
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|
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str = obj->bp->cond_string;
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if (! str)
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Py_RETURN_NONE;
|
||
|
||
return PyString_Decode (str, strlen (str), host_charset (), NULL);
|
||
}
|
||
|
||
/* 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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char *exp;
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breakpoint_object *self_bp = (breakpoint_object *) self;
|
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volatile struct gdb_exception except;
|
||
|
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BPPY_SET_REQUIRE_VALID (self_bp);
|
||
|
||
if (newvalue == NULL)
|
||
{
|
||
PyErr_SetString (PyExc_TypeError,
|
||
_("Cannot delete `condition' attribute."));
|
||
return -1;
|
||
}
|
||
else if (newvalue == Py_None)
|
||
exp = "";
|
||
else
|
||
{
|
||
exp = python_string_to_host_string (newvalue);
|
||
if (exp == NULL)
|
||
return -1;
|
||
}
|
||
|
||
TRY_CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
set_breakpoint_condition (self_bp->bp, exp, 0);
|
||
}
|
||
|
||
if (newvalue != Py_None)
|
||
xfree (exp);
|
||
|
||
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)
|
||
{
|
||
breakpoint_object *self_bp = (breakpoint_object *) self;
|
||
struct breakpoint *bp = self_bp->bp;
|
||
long length;
|
||
volatile struct gdb_exception except;
|
||
struct ui_file *string_file;
|
||
struct cleanup *chain;
|
||
PyObject *result;
|
||
char *cmdstr;
|
||
|
||
BPPY_REQUIRE_VALID (self_bp);
|
||
|
||
if (! self_bp->bp->commands)
|
||
Py_RETURN_NONE;
|
||
|
||
string_file = mem_fileopen ();
|
||
chain = make_cleanup_ui_file_delete (string_file);
|
||
|
||
ui_out_redirect (current_uiout, string_file);
|
||
TRY_CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
print_command_lines (current_uiout, breakpoint_commands (bp), 0);
|
||
}
|
||
ui_out_redirect (current_uiout, NULL);
|
||
GDB_PY_HANDLE_EXCEPTION (except);
|
||
|
||
cmdstr = ui_file_xstrdup (string_file, &length);
|
||
make_cleanup (xfree, cmdstr);
|
||
result = PyString_Decode (cmdstr, strlen (cmdstr), host_charset (), NULL);
|
||
do_cleanups (chain);
|
||
return result;
|
||
}
|
||
|
||
/* Python function to get the breakpoint type. */
|
||
static PyObject *
|
||
bppy_get_type (PyObject *self, void *closure)
|
||
{
|
||
breakpoint_object *self_bp = (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)
|
||
{
|
||
breakpoint_object *self_bp = (breakpoint_object *) self;
|
||
|
||
BPPY_REQUIRE_VALID (self_bp);
|
||
|
||
if (self_bp->bp->number < 0)
|
||
Py_RETURN_FALSE;
|
||
|
||
Py_RETURN_TRUE;
|
||
}
|
||
|
||
/* Python function to get the breakpoint's number. */
|
||
static PyObject *
|
||
bppy_get_number (PyObject *self, void *closure)
|
||
{
|
||
breakpoint_object *self_bp = (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)
|
||
{
|
||
breakpoint_object *self_bp = (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)
|
||
{
|
||
breakpoint_object *self_bp = (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)
|
||
{
|
||
breakpoint_object *self_bp = (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)
|
||
{
|
||
breakpoint_object *self_bp = (breakpoint_object *) self;
|
||
|
||
BPPY_REQUIRE_VALID (self_bp);
|
||
|
||
return PyInt_FromLong (self_bp->bp->ignore_count);
|
||
}
|
||
|
||
/* Python function to create a new breakpoint. */
|
||
static int
|
||
bppy_init (PyObject *self, PyObject *args, PyObject *kwargs)
|
||
{
|
||
static char *keywords[] = { "spec", "type", "wp_class", "internal", NULL };
|
||
const char *spec;
|
||
int type = bp_breakpoint;
|
||
int access_type = hw_write;
|
||
PyObject *internal = NULL;
|
||
int internal_bp = 0;
|
||
volatile struct gdb_exception except;
|
||
|
||
if (! PyArg_ParseTupleAndKeywords (args, kwargs, "s|iiO", keywords,
|
||
&spec, &type, &access_type, &internal))
|
||
return -1;
|
||
|
||
if (internal)
|
||
{
|
||
internal_bp = PyObject_IsTrue (internal);
|
||
if (internal_bp == -1)
|
||
return -1;
|
||
}
|
||
|
||
bppy_pending_object = (breakpoint_object *) self;
|
||
bppy_pending_object->number = -1;
|
||
bppy_pending_object->bp = NULL;
|
||
|
||
TRY_CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
char *copy = xstrdup (spec);
|
||
struct cleanup *cleanup = make_cleanup (xfree, copy);
|
||
|
||
switch (type)
|
||
{
|
||
case bp_breakpoint:
|
||
{
|
||
create_breakpoint (python_gdbarch,
|
||
copy, NULL, -1, NULL,
|
||
0,
|
||
0, bp_breakpoint,
|
||
0,
|
||
AUTO_BOOLEAN_TRUE,
|
||
&bkpt_breakpoint_ops,
|
||
0, 1, internal_bp, 0);
|
||
break;
|
||
}
|
||
case bp_watchpoint:
|
||
{
|
||
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."));
|
||
}
|
||
|
||
do_cleanups (cleanup);
|
||
}
|
||
if (except.reason < 0)
|
||
{
|
||
PyErr_Format (except.reason == RETURN_QUIT
|
||
? PyExc_KeyboardInterrupt : PyExc_RuntimeError,
|
||
"%s", except.message);
|
||
return -1;
|
||
}
|
||
|
||
BPPY_SET_REQUIRE_VALID ((breakpoint_object *) self);
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
static int
|
||
build_bp_list (struct breakpoint *b, void *arg)
|
||
{
|
||
PyObject *list = 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)
|
||
{
|
||
PyObject *list, *tuple;
|
||
|
||
if (bppy_live == 0)
|
||
Py_RETURN_NONE;
|
||
|
||
list = PyList_New (0);
|
||
if (!list)
|
||
return NULL;
|
||
|
||
/* If iteratre_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) != NULL)
|
||
{
|
||
Py_DECREF (list);
|
||
return NULL;
|
||
}
|
||
|
||
tuple = PyList_AsTuple (list);
|
||
Py_DECREF (list);
|
||
|
||
return tuple;
|
||
}
|
||
|
||
/* 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. */
|
||
|
||
int
|
||
gdbpy_should_stop (struct breakpoint_object *bp_obj)
|
||
{
|
||
int stop = 1;
|
||
|
||
PyObject *py_bp = (PyObject *) bp_obj;
|
||
struct breakpoint *b = bp_obj->bp;
|
||
struct gdbarch *garch = b->gdbarch ? b->gdbarch : get_current_arch ();
|
||
struct cleanup *cleanup = ensure_python_env (garch, current_language);
|
||
|
||
if (bp_obj->is_finish_bp)
|
||
bpfinishpy_pre_stop_hook (bp_obj);
|
||
|
||
if (PyObject_HasAttrString (py_bp, stop_func))
|
||
{
|
||
PyObject *result = PyObject_CallMethod (py_bp, stop_func, NULL);
|
||
|
||
if (result)
|
||
{
|
||
int evaluate = PyObject_IsTrue (result);
|
||
|
||
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;
|
||
|
||
Py_DECREF (result);
|
||
}
|
||
else
|
||
gdbpy_print_stack ();
|
||
}
|
||
|
||
if (bp_obj->is_finish_bp)
|
||
bpfinishpy_post_stop_hook (bp_obj);
|
||
|
||
do_cleanups (cleanup);
|
||
|
||
return stop;
|
||
}
|
||
|
||
/* Checks if the "stop" method exists in this breakpoint.
|
||
Used by condition_command to ensure mutual exclusion of breakpoint
|
||
conditions. */
|
||
|
||
int
|
||
gdbpy_breakpoint_has_py_cond (struct breakpoint_object *bp_obj)
|
||
{
|
||
int has_func = 0;
|
||
PyObject *py_bp = (PyObject *) bp_obj;
|
||
struct gdbarch *garch = bp_obj->bp->gdbarch ? bp_obj->bp->gdbarch :
|
||
get_current_arch ();
|
||
struct cleanup *cleanup = ensure_python_env (garch, current_language);
|
||
|
||
if (py_bp != NULL)
|
||
has_func = PyObject_HasAttrString (py_bp, stop_func);
|
||
|
||
do_cleanups (cleanup);
|
||
|
||
return has_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)
|
||
{
|
||
breakpoint_object *newbp;
|
||
PyGILState_STATE state;
|
||
|
||
if (bp->number < 0 && 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 (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 ();
|
||
}
|
||
|
||
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;
|
||
breakpoint_object *bp_obj;
|
||
|
||
state = PyGILState_Ensure ();
|
||
bp = get_breakpoint (num);
|
||
if (bp)
|
||
{
|
||
bp_obj = bp->py_bp_object;
|
||
if (bp_obj)
|
||
{
|
||
bp_obj->bp = NULL;
|
||
--bppy_live;
|
||
Py_DECREF (bp_obj);
|
||
}
|
||
}
|
||
PyGILState_Release (state);
|
||
}
|
||
|
||
|
||
|
||
/* Initialize the Python breakpoint code. */
|
||
void
|
||
gdbpy_initialize_breakpoints (void)
|
||
{
|
||
int i;
|
||
|
||
breakpoint_object_type.tp_new = PyType_GenericNew;
|
||
if (PyType_Ready (&breakpoint_object_type) < 0)
|
||
return;
|
||
|
||
Py_INCREF (&breakpoint_object_type);
|
||
PyModule_AddObject (gdb_module, "Breakpoint",
|
||
(PyObject *) &breakpoint_object_type);
|
||
|
||
observer_attach_breakpoint_created (gdbpy_breakpoint_created);
|
||
observer_attach_breakpoint_deleted (gdbpy_breakpoint_deleted);
|
||
|
||
/* 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;
|
||
}
|
||
|
||
/* 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;
|
||
}
|
||
|
||
}
|
||
|
||
|
||
|
||
/* 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)
|
||
{
|
||
breakpoint_object *obj = (breakpoint_object *) self;
|
||
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, disallow this
|
||
operation. */
|
||
if (strcmp (attr, stop_func) == 0 && obj->bp->cond_string)
|
||
{
|
||
xfree (attr);
|
||
PyErr_SetString (PyExc_RuntimeError,
|
||
_("Cannot set 'stop' method. There is an " \
|
||
"existing GDB condition attached to the " \
|
||
"breakpoint."));
|
||
return -1;
|
||
}
|
||
|
||
xfree (attr);
|
||
|
||
return PyObject_GenericSetAttr ((PyObject *)self, name, v);
|
||
}
|
||
|
||
static 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, NULL,
|
||
"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."},
|
||
{ 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 (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 */
|
||
};
|