793 lines
24 KiB
C
793 lines
24 KiB
C
/* Python frame unwinder interface.
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Copyright (C) 2015-2016 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 "arch-utils.h"
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#include "frame-unwind.h"
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#include "gdb_obstack.h"
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#include "gdbcmd.h"
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#include "language.h"
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#include "observer.h"
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#include "python-internal.h"
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#include "regcache.h"
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#include "valprint.h"
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#include "user-regs.h"
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#define TRACE_PY_UNWIND(level, args...) if (pyuw_debug >= level) \
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{ fprintf_unfiltered (gdb_stdlog, args); }
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typedef struct
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{
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PyObject_HEAD
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/* Frame we are unwinding. */
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struct frame_info *frame_info;
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/* Its architecture, passed by the sniffer caller. */
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struct gdbarch *gdbarch;
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} pending_frame_object;
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/* Saved registers array item. */
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typedef struct
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{
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int number;
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PyObject *value;
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} saved_reg;
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DEF_VEC_O (saved_reg);
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/* The data we keep for the PyUnwindInfo: pending_frame, saved registers
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and frame ID. */
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typedef struct
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{
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PyObject_HEAD
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/* gdb.PendingFrame for the frame we are unwinding. */
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PyObject *pending_frame;
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/* Its ID. */
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struct frame_id frame_id;
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/* Saved registers array. */
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VEC (saved_reg) *saved_regs;
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} unwind_info_object;
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/* The data we keep for a frame we can unwind: frame ID and an array of
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(register_number, register_value) pairs. */
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struct reg_info
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{
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/* Register number. */
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int number;
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/* Register data bytes pointer. */
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gdb_byte data[MAX_REGISTER_SIZE];
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};
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typedef struct
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{
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/* Frame ID. */
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struct frame_id frame_id;
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/* GDB Architecture. */
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struct gdbarch *gdbarch;
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/* Length of the `reg' array below. */
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int reg_count;
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struct reg_info reg[];
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} cached_frame_info;
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extern PyTypeObject pending_frame_object_type
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CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("pending_frame_object");
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extern PyTypeObject unwind_info_object_type
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CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("unwind_info_object");
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static unsigned int pyuw_debug = 0;
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static struct gdbarch_data *pyuw_gdbarch_data;
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/* Parses register id, which can be either a number or a name.
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Returns 1 on success, 0 otherwise. */
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static int
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pyuw_parse_register_id (struct gdbarch *gdbarch, PyObject *pyo_reg_id,
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int *reg_num)
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{
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if (pyo_reg_id == NULL)
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return 0;
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if (gdbpy_is_string (pyo_reg_id))
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{
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const char *reg_name = gdbpy_obj_to_string (pyo_reg_id);
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if (reg_name == NULL)
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return 0;
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*reg_num = user_reg_map_name_to_regnum (gdbarch, reg_name,
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strlen (reg_name));
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return *reg_num >= 0;
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}
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else if (PyInt_Check (pyo_reg_id))
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{
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long value;
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if (gdb_py_int_as_long (pyo_reg_id, &value) && (int) value == value)
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{
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*reg_num = (int) value;
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return user_reg_map_regnum_to_name (gdbarch, *reg_num) != NULL;
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}
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}
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return 0;
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}
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/* Convert gdb.Value instance to inferior's pointer. Return 1 on success,
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0 on failure. */
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static int
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pyuw_value_obj_to_pointer (PyObject *pyo_value, CORE_ADDR *addr)
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{
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int rc = 0;
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struct value *value;
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TRY
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{
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if ((value = value_object_to_value (pyo_value)) != NULL)
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{
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*addr = unpack_pointer (value_type (value),
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value_contents (value));
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rc = 1;
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}
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}
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CATCH (except, RETURN_MASK_ALL)
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{
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gdbpy_convert_exception (except);
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}
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END_CATCH
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return rc;
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}
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/* Get attribute from an object and convert it to the inferior's
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pointer value. Return 1 if attribute exists and its value can be
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converted. Otherwise, if attribute does not exist or its value is
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None, return 0. In all other cases set Python error and return
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0. */
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static int
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pyuw_object_attribute_to_pointer (PyObject *pyo, const char *attr_name,
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CORE_ADDR *addr)
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{
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int rc = 0;
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if (PyObject_HasAttrString (pyo, attr_name))
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{
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PyObject *pyo_value = PyObject_GetAttrString (pyo, attr_name);
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struct value *value;
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if (pyo_value != NULL && pyo_value != Py_None)
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{
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rc = pyuw_value_obj_to_pointer (pyo_value, addr);
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if (!rc)
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PyErr_Format (
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PyExc_ValueError,
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_("The value of the '%s' attribute is not a pointer."),
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attr_name);
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}
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Py_XDECREF (pyo_value);
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}
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return rc;
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}
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/* Called by the Python interpreter to obtain string representation
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of the UnwindInfo object. */
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static PyObject *
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unwind_infopy_str (PyObject *self)
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{
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struct ui_file *strfile = mem_fileopen ();
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unwind_info_object *unwind_info = (unwind_info_object *) self;
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pending_frame_object *pending_frame
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= (pending_frame_object *) (unwind_info->pending_frame);
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PyObject *result;
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fprintf_unfiltered (strfile, "Frame ID: ");
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fprint_frame_id (strfile, unwind_info->frame_id);
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{
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char *sep = "";
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int i;
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struct value_print_options opts;
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saved_reg *reg;
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get_user_print_options (&opts);
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fprintf_unfiltered (strfile, "\nSaved registers: (");
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for (i = 0;
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i < VEC_iterate (saved_reg, unwind_info->saved_regs, i, reg);
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i++)
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{
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struct value *value = value_object_to_value (reg->value);
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fprintf_unfiltered (strfile, "%s(%d, ", sep, reg->number);
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if (value != NULL)
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{
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TRY
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{
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value_print (value, strfile, &opts);
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fprintf_unfiltered (strfile, ")");
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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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}
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else
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fprintf_unfiltered (strfile, "<BAD>)");
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sep = ", ";
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}
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fprintf_unfiltered (strfile, ")");
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}
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{
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char *s = ui_file_xstrdup (strfile, NULL);
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result = PyString_FromString (s);
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xfree (s);
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}
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ui_file_delete (strfile);
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return result;
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}
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/* Create UnwindInfo instance for given PendingFrame and frame ID.
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Sets Python error and returns NULL on error. */
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static PyObject *
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pyuw_create_unwind_info (PyObject *pyo_pending_frame,
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struct frame_id frame_id)
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{
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unwind_info_object *unwind_info
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= PyObject_New (unwind_info_object, &unwind_info_object_type);
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if (((pending_frame_object *) pyo_pending_frame)->frame_info == NULL)
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{
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PyErr_SetString (PyExc_ValueError,
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"Attempting to use stale PendingFrame");
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return NULL;
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}
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unwind_info->frame_id = frame_id;
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Py_INCREF (pyo_pending_frame);
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unwind_info->pending_frame = pyo_pending_frame;
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unwind_info->saved_regs = VEC_alloc (saved_reg, 4);
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return (PyObject *) unwind_info;
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}
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/* The implementation of
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gdb.UnwindInfo.add_saved_register (REG, VALUE) -> None. */
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static PyObject *
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unwind_infopy_add_saved_register (PyObject *self, PyObject *args)
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{
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unwind_info_object *unwind_info = (unwind_info_object *) self;
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pending_frame_object *pending_frame
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= (pending_frame_object *) (unwind_info->pending_frame);
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PyObject *pyo_reg_id;
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PyObject *pyo_reg_value;
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int regnum;
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if (pending_frame->frame_info == NULL)
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{
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PyErr_SetString (PyExc_ValueError,
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"UnwindInfo instance refers to a stale PendingFrame");
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return NULL;
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}
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if (!PyArg_UnpackTuple (args, "previous_frame_register", 2, 2,
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&pyo_reg_id, &pyo_reg_value))
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return NULL;
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if (!pyuw_parse_register_id (pending_frame->gdbarch, pyo_reg_id, ®num))
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{
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PyErr_SetString (PyExc_ValueError, "Bad register");
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return NULL;
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}
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{
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struct value *value;
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size_t data_size;
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if (pyo_reg_value == NULL
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|| (value = value_object_to_value (pyo_reg_value)) == NULL)
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{
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PyErr_SetString (PyExc_ValueError, "Bad register value");
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return NULL;
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}
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data_size = register_size (pending_frame->gdbarch, regnum);
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if (data_size != TYPE_LENGTH (value_type (value)))
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{
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PyErr_Format (
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PyExc_ValueError,
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"The value of the register returned by the Python "
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"sniffer has unexpected size: %u instead of %u.",
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(unsigned) TYPE_LENGTH (value_type (value)),
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(unsigned) data_size);
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return NULL;
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}
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}
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{
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int i;
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saved_reg *reg;
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for (i = 0; VEC_iterate (saved_reg, unwind_info->saved_regs, i, reg); i++)
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{
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if (regnum == reg->number)
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{
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Py_DECREF (reg->value);
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break;
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}
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}
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if (reg == NULL)
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{
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reg = VEC_safe_push (saved_reg, unwind_info->saved_regs, NULL);
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reg->number = regnum;
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}
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Py_INCREF (pyo_reg_value);
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reg->value = pyo_reg_value;
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}
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Py_RETURN_NONE;
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}
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/* UnwindInfo cleanup. */
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static void
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unwind_infopy_dealloc (PyObject *self)
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{
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unwind_info_object *unwind_info = (unwind_info_object *) self;
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int i;
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saved_reg *reg;
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Py_XDECREF (unwind_info->pending_frame);
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for (i = 0; VEC_iterate (saved_reg, unwind_info->saved_regs, i, reg); i++)
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Py_DECREF (reg->value);
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VEC_free (saved_reg, unwind_info->saved_regs);
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Py_TYPE (self)->tp_free (self);
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}
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/* Called by the Python interpreter to obtain string representation
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of the PendingFrame object. */
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static PyObject *
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pending_framepy_str (PyObject *self)
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{
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struct frame_info *frame = ((pending_frame_object *) self)->frame_info;
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const char *sp_str = NULL;
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const char *pc_str = NULL;
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if (frame == NULL)
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return PyString_FromString ("Stale PendingFrame instance");
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TRY
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{
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sp_str = core_addr_to_string_nz (get_frame_sp (frame));
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pc_str = core_addr_to_string_nz (get_frame_pc (frame));
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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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return PyString_FromFormat ("SP=%s,PC=%s", sp_str, pc_str);
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}
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/* Implementation of gdb.PendingFrame.read_register (self, reg) -> gdb.Value.
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Returns the value of register REG as gdb.Value instance. */
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static PyObject *
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pending_framepy_read_register (PyObject *self, PyObject *args)
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{
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pending_frame_object *pending_frame = (pending_frame_object *) self;
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struct value *val = NULL;
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int regnum;
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PyObject *pyo_reg_id;
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if (pending_frame->frame_info == NULL)
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{
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PyErr_SetString (PyExc_ValueError,
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"Attempting to read register from stale PendingFrame");
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return NULL;
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}
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if (!PyArg_UnpackTuple (args, "read_register", 1, 1, &pyo_reg_id))
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return NULL;
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if (!pyuw_parse_register_id (pending_frame->gdbarch, pyo_reg_id, ®num))
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{
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PyErr_SetString (PyExc_ValueError, "Bad register");
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return NULL;
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}
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TRY
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{
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val = get_frame_register_value (pending_frame->frame_info, regnum);
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if (val == NULL)
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PyErr_Format (PyExc_ValueError,
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"Cannot read register %d from frame.",
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regnum);
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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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return val == NULL ? NULL : value_to_value_object (val);
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}
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/* Implementation of
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PendingFrame.create_unwind_info (self, frameId) -> UnwindInfo. */
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static PyObject *
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pending_framepy_create_unwind_info (PyObject *self, PyObject *args)
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{
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PyObject *pyo_frame_id;
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CORE_ADDR sp;
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CORE_ADDR pc;
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CORE_ADDR special;
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if (!PyArg_ParseTuple (args, "O:create_unwind_info", &pyo_frame_id))
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return NULL;
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if (!pyuw_object_attribute_to_pointer (pyo_frame_id, "sp", &sp))
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{
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PyErr_SetString (PyExc_ValueError,
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_("frame_id should have 'sp' attribute."));
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return NULL;
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}
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/* The logic of building frame_id depending on the attributes of
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the frame_id object:
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Has Has Has Function to call
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'sp'? 'pc'? 'special'?
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------|------|--------------|-------------------------
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Y N * frame_id_build_wild (sp)
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Y Y N frame_id_build (sp, pc)
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Y Y Y frame_id_build_special (sp, pc, special)
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*/
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if (!pyuw_object_attribute_to_pointer (pyo_frame_id, "pc", &pc))
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return pyuw_create_unwind_info (self, frame_id_build_wild (sp));
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if (!pyuw_object_attribute_to_pointer (pyo_frame_id, "special", &special))
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return pyuw_create_unwind_info (self, frame_id_build (sp, pc));
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else
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return pyuw_create_unwind_info (self,
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frame_id_build_special (sp, pc, special));
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}
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/* Invalidate PendingFrame instance. */
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static void
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pending_frame_invalidate (void *pyo_pending_frame)
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{
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if (pyo_pending_frame != NULL)
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((pending_frame_object *) pyo_pending_frame)->frame_info = NULL;
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}
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/* frame_unwind.this_id method. */
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static void
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pyuw_this_id (struct frame_info *this_frame, void **cache_ptr,
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struct frame_id *this_id)
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{
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*this_id = ((cached_frame_info *) *cache_ptr)->frame_id;
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if (pyuw_debug >= 1)
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{
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fprintf_unfiltered (gdb_stdlog, "%s: frame_id: ", __FUNCTION__);
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fprint_frame_id (gdb_stdlog, *this_id);
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fprintf_unfiltered (gdb_stdlog, "\n");
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}
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}
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/* frame_unwind.prev_register. */
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static struct value *
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pyuw_prev_register (struct frame_info *this_frame, void **cache_ptr,
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int regnum)
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{
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cached_frame_info *cached_frame = (cached_frame_info *) *cache_ptr;
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struct reg_info *reg_info = cached_frame->reg;
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struct reg_info *reg_info_end = reg_info + cached_frame->reg_count;
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TRACE_PY_UNWIND (1, "%s (frame=%p,...,reg=%d)\n", __FUNCTION__, this_frame,
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regnum);
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for (; reg_info < reg_info_end; ++reg_info)
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{
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if (regnum == reg_info->number)
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return frame_unwind_got_bytes (this_frame, regnum, reg_info->data);
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}
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return frame_unwind_got_optimized (this_frame, regnum);
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}
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/* Frame sniffer dispatch. */
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static int
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pyuw_sniffer (const struct frame_unwind *self, struct frame_info *this_frame,
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void **cache_ptr)
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{
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struct gdbarch *gdbarch = (struct gdbarch *) (self->unwind_data);
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struct cleanup *cleanups = ensure_python_env (gdbarch, current_language);
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PyObject *pyo_execute;
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PyObject *pyo_pending_frame;
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PyObject *pyo_unwind_info;
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cached_frame_info *cached_frame;
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TRACE_PY_UNWIND (3, "%s (SP=%s, PC=%s)\n", __FUNCTION__,
|
|
paddress (gdbarch, get_frame_sp (this_frame)),
|
|
paddress (gdbarch, get_frame_pc (this_frame)));
|
|
|
|
/* Create PendingFrame instance to pass to sniffers. */
|
|
pyo_pending_frame = (PyObject *) PyObject_New (pending_frame_object,
|
|
&pending_frame_object_type);
|
|
if (pyo_pending_frame == NULL)
|
|
goto error;
|
|
((pending_frame_object *) pyo_pending_frame)->gdbarch = gdbarch;
|
|
((pending_frame_object *) pyo_pending_frame)->frame_info = this_frame;
|
|
make_cleanup_py_decref (pyo_pending_frame);
|
|
make_cleanup (pending_frame_invalidate, (void *) pyo_pending_frame);
|
|
|
|
/* Run unwinders. */
|
|
if (gdb_python_module == NULL
|
|
|| ! PyObject_HasAttrString (gdb_python_module, "execute_unwinders"))
|
|
{
|
|
PyErr_SetString (PyExc_NameError,
|
|
"Installation error: gdb.execute_unwinders function "
|
|
"is missing");
|
|
goto error;
|
|
}
|
|
pyo_execute = PyObject_GetAttrString (gdb_python_module, "execute_unwinders");
|
|
if (pyo_execute == NULL)
|
|
goto error;
|
|
make_cleanup_py_decref (pyo_execute);
|
|
pyo_unwind_info
|
|
= PyObject_CallFunctionObjArgs (pyo_execute, pyo_pending_frame, NULL);
|
|
if (pyo_unwind_info == NULL)
|
|
goto error;
|
|
make_cleanup_py_decref (pyo_unwind_info);
|
|
if (pyo_unwind_info == Py_None)
|
|
goto cannot_unwind;
|
|
|
|
/* Received UnwindInfo, cache data. */
|
|
if (PyObject_IsInstance (pyo_unwind_info,
|
|
(PyObject *) &unwind_info_object_type) <= 0)
|
|
error (_("A Unwinder should return gdb.UnwindInfo instance."));
|
|
|
|
{
|
|
unwind_info_object *unwind_info = (unwind_info_object *) pyo_unwind_info;
|
|
int reg_count = VEC_length (saved_reg, unwind_info->saved_regs);
|
|
saved_reg *reg;
|
|
int i;
|
|
|
|
cached_frame
|
|
= ((cached_frame_info *)
|
|
xmalloc (sizeof (*cached_frame)
|
|
+ reg_count * sizeof (cached_frame->reg[0])));
|
|
cached_frame->gdbarch = gdbarch;
|
|
cached_frame->frame_id = unwind_info->frame_id;
|
|
cached_frame->reg_count = reg_count;
|
|
|
|
/* Populate registers array. */
|
|
for (i = 0; VEC_iterate (saved_reg, unwind_info->saved_regs, i, reg); i++)
|
|
{
|
|
struct value *value = value_object_to_value (reg->value);
|
|
size_t data_size = register_size (gdbarch, reg->number);
|
|
|
|
cached_frame->reg[i].number = reg->number;
|
|
|
|
/* `value' validation was done before, just assert. */
|
|
gdb_assert (value != NULL);
|
|
gdb_assert (data_size == TYPE_LENGTH (value_type (value)));
|
|
gdb_assert (data_size <= MAX_REGISTER_SIZE);
|
|
|
|
memcpy (cached_frame->reg[i].data, value_contents (value), data_size);
|
|
}
|
|
}
|
|
|
|
*cache_ptr = cached_frame;
|
|
do_cleanups (cleanups);
|
|
return 1;
|
|
|
|
error:
|
|
gdbpy_print_stack ();
|
|
/* Fallthrough. */
|
|
cannot_unwind:
|
|
do_cleanups (cleanups);
|
|
return 0;
|
|
}
|
|
|
|
/* Frame cache release shim. */
|
|
|
|
static void
|
|
pyuw_dealloc_cache (struct frame_info *this_frame, void *cache)
|
|
{
|
|
TRACE_PY_UNWIND (3, "%s: enter", __FUNCTION__);
|
|
xfree (cache);
|
|
}
|
|
|
|
struct pyuw_gdbarch_data_type
|
|
{
|
|
/* Has the unwinder shim been prepended? */
|
|
int unwinder_registered;
|
|
};
|
|
|
|
static void *
|
|
pyuw_gdbarch_data_init (struct gdbarch *gdbarch)
|
|
{
|
|
return GDBARCH_OBSTACK_ZALLOC (gdbarch, struct pyuw_gdbarch_data_type);
|
|
}
|
|
|
|
/* New inferior architecture callback: register the Python unwinders
|
|
intermediary. */
|
|
|
|
static void
|
|
pyuw_on_new_gdbarch (struct gdbarch *newarch)
|
|
{
|
|
struct pyuw_gdbarch_data_type *data
|
|
= (struct pyuw_gdbarch_data_type *) gdbarch_data (newarch,
|
|
pyuw_gdbarch_data);
|
|
|
|
if (!data->unwinder_registered)
|
|
{
|
|
struct frame_unwind *unwinder
|
|
= GDBARCH_OBSTACK_ZALLOC (newarch, struct frame_unwind);
|
|
|
|
unwinder->type = NORMAL_FRAME;
|
|
unwinder->stop_reason = default_frame_unwind_stop_reason;
|
|
unwinder->this_id = pyuw_this_id;
|
|
unwinder->prev_register = pyuw_prev_register;
|
|
unwinder->unwind_data = (const struct frame_data *) newarch;
|
|
unwinder->sniffer = pyuw_sniffer;
|
|
unwinder->dealloc_cache = pyuw_dealloc_cache;
|
|
frame_unwind_prepend_unwinder (newarch, unwinder);
|
|
data->unwinder_registered = 1;
|
|
}
|
|
}
|
|
|
|
/* Initialize unwind machinery. */
|
|
|
|
int
|
|
gdbpy_initialize_unwind (void)
|
|
{
|
|
int rc;
|
|
add_setshow_zuinteger_cmd
|
|
("py-unwind", class_maintenance, &pyuw_debug,
|
|
_("Set Python unwinder debugging."),
|
|
_("Show Python unwinder debugging."),
|
|
_("When non-zero, Python unwinder debugging is enabled."),
|
|
NULL,
|
|
NULL,
|
|
&setdebuglist, &showdebuglist);
|
|
pyuw_gdbarch_data
|
|
= gdbarch_data_register_post_init (pyuw_gdbarch_data_init);
|
|
observer_attach_architecture_changed (pyuw_on_new_gdbarch);
|
|
|
|
if (PyType_Ready (&pending_frame_object_type) < 0)
|
|
return -1;
|
|
rc = gdb_pymodule_addobject (gdb_module, "PendingFrame",
|
|
(PyObject *) &pending_frame_object_type);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (PyType_Ready (&unwind_info_object_type) < 0)
|
|
return -1;
|
|
return gdb_pymodule_addobject (gdb_module, "UnwindInfo",
|
|
(PyObject *) &unwind_info_object_type);
|
|
}
|
|
|
|
static PyMethodDef pending_frame_object_methods[] =
|
|
{
|
|
{ "read_register", pending_framepy_read_register, METH_VARARGS,
|
|
"read_register (REG) -> gdb.Value\n"
|
|
"Return the value of the REG in the frame." },
|
|
{ "create_unwind_info",
|
|
pending_framepy_create_unwind_info, METH_VARARGS,
|
|
"create_unwind_info (FRAME_ID) -> gdb.UnwindInfo\n"
|
|
"Construct UnwindInfo for this PendingFrame, using FRAME_ID\n"
|
|
"to identify it." },
|
|
{NULL} /* Sentinel */
|
|
};
|
|
|
|
PyTypeObject pending_frame_object_type =
|
|
{
|
|
PyVarObject_HEAD_INIT (NULL, 0)
|
|
"gdb.PendingFrame", /* tp_name */
|
|
sizeof (pending_frame_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 */
|
|
pending_framepy_str, /* tp_str */
|
|
0, /* tp_getattro */
|
|
0, /* tp_setattro */
|
|
0, /* tp_as_buffer */
|
|
Py_TPFLAGS_DEFAULT, /* tp_flags */
|
|
"GDB PendingFrame object", /* tp_doc */
|
|
0, /* tp_traverse */
|
|
0, /* tp_clear */
|
|
0, /* tp_richcompare */
|
|
0, /* tp_weaklistoffset */
|
|
0, /* tp_iter */
|
|
0, /* tp_iternext */
|
|
pending_frame_object_methods, /* tp_methods */
|
|
0, /* tp_members */
|
|
0, /* tp_getset */
|
|
0, /* tp_base */
|
|
0, /* tp_dict */
|
|
0, /* tp_descr_get */
|
|
0, /* tp_descr_set */
|
|
0, /* tp_dictoffset */
|
|
0, /* tp_init */
|
|
0, /* tp_alloc */
|
|
};
|
|
|
|
static PyMethodDef unwind_info_object_methods[] =
|
|
{
|
|
{ "add_saved_register",
|
|
unwind_infopy_add_saved_register, METH_VARARGS,
|
|
"add_saved_register (REG, VALUE) -> None\n"
|
|
"Set the value of the REG in the previous frame to VALUE." },
|
|
{ NULL } /* Sentinel */
|
|
};
|
|
|
|
PyTypeObject unwind_info_object_type =
|
|
{
|
|
PyVarObject_HEAD_INIT (NULL, 0)
|
|
"gdb.UnwindInfo", /* tp_name */
|
|
sizeof (unwind_info_object), /* tp_basicsize */
|
|
0, /* tp_itemsize */
|
|
unwind_infopy_dealloc, /* tp_dealloc */
|
|
0, /* tp_print */
|
|
0, /* tp_getattr */
|
|
0, /* tp_setattr */
|
|
0, /* tp_compare */
|
|
0, /* tp_repr */
|
|
0, /* tp_as_number */
|
|
0, /* tp_as_sequence */
|
|
0, /* tp_as_mapping */
|
|
0, /* tp_hash */
|
|
0, /* tp_call */
|
|
unwind_infopy_str, /* tp_str */
|
|
0, /* tp_getattro */
|
|
0, /* tp_setattro */
|
|
0, /* tp_as_buffer */
|
|
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
|
|
"GDB UnwindInfo object", /* tp_doc */
|
|
0, /* tp_traverse */
|
|
0, /* tp_clear */
|
|
0, /* tp_richcompare */
|
|
0, /* tp_weaklistoffset */
|
|
0, /* tp_iter */
|
|
0, /* tp_iternext */
|
|
unwind_info_object_methods, /* tp_methods */
|
|
0, /* tp_members */
|
|
0, /* tp_getset */
|
|
0, /* tp_base */
|
|
0, /* tp_dict */
|
|
0, /* tp_descr_get */
|
|
0, /* tp_descr_set */
|
|
0, /* tp_dictoffset */
|
|
0, /* tp_init */
|
|
0, /* tp_alloc */
|
|
};
|