1216 lines
30 KiB
C
1216 lines
30 KiB
C
/* Python interface to types.
|
||
|
||
Copyright (C) 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
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||
|
||
This file is part of GDB.
|
||
|
||
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
|
||
the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program. If not, see <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"
|
||
#include "charset.h"
|
||
#include "gdbtypes.h"
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||
#include "cp-support.h"
|
||
#include "demangle.h"
|
||
#include "objfiles.h"
|
||
#include "language.h"
|
||
#include "vec.h"
|
||
#include "bcache.h"
|
||
|
||
typedef struct pyty_type_object
|
||
{
|
||
PyObject_HEAD
|
||
struct type *type;
|
||
|
||
/* If a Type object is associated with an objfile, it is kept on a
|
||
doubly-linked list, rooted in the objfile. This lets us copy the
|
||
underlying struct type when the objfile is deleted. */
|
||
struct pyty_type_object *prev;
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||
struct pyty_type_object *next;
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||
} type_object;
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||
|
||
static PyTypeObject type_object_type;
|
||
|
||
/* A Field object. */
|
||
typedef struct pyty_field_object
|
||
{
|
||
PyObject_HEAD
|
||
|
||
/* Dictionary holding our attributes. */
|
||
PyObject *dict;
|
||
} field_object;
|
||
|
||
static PyTypeObject field_object_type;
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||
|
||
/* This is used to initialize various gdb.TYPE_ constants. */
|
||
struct pyty_code
|
||
{
|
||
/* The code. */
|
||
enum type_code code;
|
||
/* The name. */
|
||
const char *name;
|
||
};
|
||
|
||
#define ENTRY(X) { X, #X }
|
||
|
||
static struct pyty_code pyty_codes[] =
|
||
{
|
||
ENTRY (TYPE_CODE_PTR),
|
||
ENTRY (TYPE_CODE_ARRAY),
|
||
ENTRY (TYPE_CODE_STRUCT),
|
||
ENTRY (TYPE_CODE_UNION),
|
||
ENTRY (TYPE_CODE_ENUM),
|
||
ENTRY (TYPE_CODE_FLAGS),
|
||
ENTRY (TYPE_CODE_FUNC),
|
||
ENTRY (TYPE_CODE_INT),
|
||
ENTRY (TYPE_CODE_FLT),
|
||
ENTRY (TYPE_CODE_VOID),
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||
ENTRY (TYPE_CODE_SET),
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||
ENTRY (TYPE_CODE_RANGE),
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||
ENTRY (TYPE_CODE_STRING),
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||
ENTRY (TYPE_CODE_BITSTRING),
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||
ENTRY (TYPE_CODE_ERROR),
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||
ENTRY (TYPE_CODE_METHOD),
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||
ENTRY (TYPE_CODE_METHODPTR),
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||
ENTRY (TYPE_CODE_MEMBERPTR),
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||
ENTRY (TYPE_CODE_REF),
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||
ENTRY (TYPE_CODE_CHAR),
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||
ENTRY (TYPE_CODE_BOOL),
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||
ENTRY (TYPE_CODE_COMPLEX),
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||
ENTRY (TYPE_CODE_TYPEDEF),
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||
ENTRY (TYPE_CODE_NAMESPACE),
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||
ENTRY (TYPE_CODE_DECFLOAT),
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||
ENTRY (TYPE_CODE_INTERNAL_FUNCTION),
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||
{ TYPE_CODE_UNDEF, NULL }
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||
};
|
||
|
||
|
||
|
||
static void
|
||
field_dealloc (PyObject *obj)
|
||
{
|
||
field_object *f = (field_object *) obj;
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||
|
||
Py_XDECREF (f->dict);
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||
f->ob_type->tp_free (obj);
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||
}
|
||
|
||
static PyObject *
|
||
field_new (void)
|
||
{
|
||
field_object *result = PyObject_New (field_object, &field_object_type);
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||
|
||
if (result)
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||
{
|
||
result->dict = PyDict_New ();
|
||
if (!result->dict)
|
||
{
|
||
Py_DECREF (result);
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||
result = NULL;
|
||
}
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||
}
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||
return (PyObject *) result;
|
||
}
|
||
|
||
|
||
|
||
/* Return the code for this type. */
|
||
static PyObject *
|
||
typy_get_code (PyObject *self, void *closure)
|
||
{
|
||
struct type *type = ((type_object *) self)->type;
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||
|
||
return PyInt_FromLong (TYPE_CODE (type));
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||
}
|
||
|
||
/* Helper function for typy_fields which converts a single field to a
|
||
dictionary. Returns NULL on error. */
|
||
static PyObject *
|
||
convert_field (struct type *type, int field)
|
||
{
|
||
PyObject *result = field_new ();
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||
PyObject *arg;
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||
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||
if (!result)
|
||
return NULL;
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||
|
||
if (!field_is_static (&TYPE_FIELD (type, field)))
|
||
{
|
||
arg = PyLong_FromLong (TYPE_FIELD_BITPOS (type, field));
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||
if (!arg)
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||
goto fail;
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||
|
||
if (PyObject_SetAttrString (result, "bitpos", arg) < 0)
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||
goto failarg;
|
||
}
|
||
|
||
if (TYPE_FIELD_NAME (type, field))
|
||
arg = PyString_FromString (TYPE_FIELD_NAME (type, field));
|
||
else
|
||
{
|
||
arg = Py_None;
|
||
Py_INCREF (arg);
|
||
}
|
||
if (!arg)
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||
goto fail;
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||
if (PyObject_SetAttrString (result, "name", arg) < 0)
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goto failarg;
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||
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arg = TYPE_FIELD_ARTIFICIAL (type, field) ? Py_True : Py_False;
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||
Py_INCREF (arg);
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if (PyObject_SetAttrString (result, "artificial", arg) < 0)
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goto failarg;
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||
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if (TYPE_CODE (type) == TYPE_CODE_CLASS)
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arg = field < TYPE_N_BASECLASSES (type) ? Py_True : Py_False;
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else
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arg = Py_False;
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Py_INCREF (arg);
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||
if (PyObject_SetAttrString (result, "is_base_class", arg) < 0)
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goto failarg;
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||
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arg = PyLong_FromLong (TYPE_FIELD_BITSIZE (type, field));
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if (!arg)
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goto fail;
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if (PyObject_SetAttrString (result, "bitsize", arg) < 0)
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goto failarg;
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/* A field can have a NULL type in some situations. */
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if (TYPE_FIELD_TYPE (type, field) == NULL)
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{
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||
arg = Py_None;
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Py_INCREF (arg);
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||
}
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else
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arg = type_to_type_object (TYPE_FIELD_TYPE (type, field));
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if (!arg)
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goto fail;
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if (PyObject_SetAttrString (result, "type", arg) < 0)
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goto failarg;
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return result;
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failarg:
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||
Py_DECREF (arg);
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fail:
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||
Py_DECREF (result);
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||
return NULL;
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||
}
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||
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/* Return a sequence of all fields. Each field is a dictionary with
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some pre-defined keys. */
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static PyObject *
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||
typy_fields (PyObject *self, PyObject *args)
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||
{
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||
PyObject *result;
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||
int i;
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||
struct type *type = ((type_object *) self)->type;
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volatile struct gdb_exception except;
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TRY_CATCH (except, RETURN_MASK_ALL)
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{
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CHECK_TYPEDEF (type);
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}
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GDB_PY_HANDLE_EXCEPTION (except);
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||
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||
/* We would like to make a tuple here, make fields immutable, and
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then memoize the result (and perhaps make Field.type() lazy).
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||
However, that can lead to cycles. */
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||
result = PyList_New (0);
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||
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||
for (i = 0; i < TYPE_NFIELDS (type); ++i)
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||
{
|
||
PyObject *dict = convert_field (type, i);
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||
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||
if (!dict)
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||
{
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||
Py_DECREF (result);
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||
return NULL;
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||
}
|
||
if (PyList_Append (result, dict))
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||
{
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||
Py_DECREF (dict);
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||
Py_DECREF (result);
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||
return NULL;
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||
}
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||
}
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||
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||
return result;
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||
}
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||
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/* Return the type's tag, or None. */
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||
static PyObject *
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||
typy_get_tag (PyObject *self, void *closure)
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{
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struct type *type = ((type_object *) self)->type;
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if (!TYPE_TAG_NAME (type))
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Py_RETURN_NONE;
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return PyString_FromString (TYPE_TAG_NAME (type));
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||
}
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||
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/* Return the type, stripped of typedefs. */
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static PyObject *
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||
typy_strip_typedefs (PyObject *self, PyObject *args)
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{
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||
struct type *type = ((type_object *) self)->type;
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||
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return type_to_type_object (check_typedef (type));
|
||
}
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||
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||
/* Return an array type. */
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||
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||
static PyObject *
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||
typy_array (PyObject *self, PyObject *args)
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{
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||
int n1, n2;
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PyObject *n2_obj = NULL;
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||
struct type *array = NULL;
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||
struct type *type = ((type_object *) self)->type;
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volatile struct gdb_exception except;
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||
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if (! PyArg_ParseTuple (args, "i|O", &n1, &n2_obj))
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return NULL;
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||
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||
if (n2_obj)
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||
{
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||
if (!PyInt_Check (n2_obj))
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||
{
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||
PyErr_SetString (PyExc_RuntimeError,
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_("Array bound must be an integer"));
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||
return NULL;
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||
}
|
||
n2 = (int) PyInt_AsLong (n2_obj);
|
||
if (PyErr_Occurred ())
|
||
return NULL;
|
||
}
|
||
else
|
||
{
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||
n2 = n1;
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||
n1 = 0;
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||
}
|
||
|
||
if (n2 < n1)
|
||
{
|
||
PyErr_SetString (PyExc_ValueError,
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||
_("Array length must not be negative"));
|
||
return NULL;
|
||
}
|
||
|
||
TRY_CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
array = lookup_array_range_type (type, n1, n2);
|
||
}
|
||
GDB_PY_HANDLE_EXCEPTION (except);
|
||
|
||
return type_to_type_object (array);
|
||
}
|
||
|
||
/* Return a Type object which represents a pointer to SELF. */
|
||
static PyObject *
|
||
typy_pointer (PyObject *self, PyObject *args)
|
||
{
|
||
struct type *type = ((type_object *) self)->type;
|
||
volatile struct gdb_exception except;
|
||
|
||
TRY_CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
type = lookup_pointer_type (type);
|
||
}
|
||
GDB_PY_HANDLE_EXCEPTION (except);
|
||
|
||
return type_to_type_object (type);
|
||
}
|
||
|
||
/* Return the range of a type represented by SELF. The return type is
|
||
a tuple. The first element of the tuple contains the low bound,
|
||
while the second element of the tuple contains the high bound. */
|
||
static PyObject *
|
||
typy_range (PyObject *self, PyObject *args)
|
||
{
|
||
struct type *type = ((type_object *) self)->type;
|
||
PyObject *result;
|
||
PyObject *low_bound = NULL, *high_bound = NULL;
|
||
/* Initialize these to appease GCC warnings. */
|
||
LONGEST low = 0, high = 0;
|
||
|
||
if (TYPE_CODE (type) != TYPE_CODE_ARRAY
|
||
&& TYPE_CODE (type) != TYPE_CODE_STRING
|
||
&& TYPE_CODE (type) != TYPE_CODE_RANGE)
|
||
{
|
||
PyErr_SetString (PyExc_RuntimeError,
|
||
_("This type does not have a range."));
|
||
return NULL;
|
||
}
|
||
|
||
switch (TYPE_CODE (type))
|
||
{
|
||
case TYPE_CODE_ARRAY:
|
||
case TYPE_CODE_STRING:
|
||
low = TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type));
|
||
high = TYPE_HIGH_BOUND (TYPE_INDEX_TYPE (type));
|
||
break;
|
||
case TYPE_CODE_RANGE:
|
||
low = TYPE_LOW_BOUND (type);
|
||
high = TYPE_HIGH_BOUND (type);
|
||
break;
|
||
}
|
||
|
||
low_bound = PyLong_FromLong (low);
|
||
if (!low_bound)
|
||
goto failarg;
|
||
|
||
high_bound = PyLong_FromLong (high);
|
||
if (!high_bound)
|
||
goto failarg;
|
||
|
||
result = PyTuple_New (2);
|
||
if (!result)
|
||
goto failarg;
|
||
|
||
if (PyTuple_SetItem (result, 0, low_bound) != 0)
|
||
{
|
||
Py_DECREF (result);
|
||
goto failarg;
|
||
}
|
||
if (PyTuple_SetItem (result, 1, high_bound) != 0)
|
||
{
|
||
Py_DECREF (high_bound);
|
||
Py_DECREF (result);
|
||
return NULL;
|
||
}
|
||
return result;
|
||
|
||
failarg:
|
||
Py_XDECREF (high_bound);
|
||
Py_XDECREF (low_bound);
|
||
return NULL;
|
||
}
|
||
|
||
/* Return a Type object which represents a reference to SELF. */
|
||
static PyObject *
|
||
typy_reference (PyObject *self, PyObject *args)
|
||
{
|
||
struct type *type = ((type_object *) self)->type;
|
||
volatile struct gdb_exception except;
|
||
|
||
TRY_CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
type = lookup_reference_type (type);
|
||
}
|
||
GDB_PY_HANDLE_EXCEPTION (except);
|
||
|
||
return type_to_type_object (type);
|
||
}
|
||
|
||
/* Return a Type object which represents the target type of SELF. */
|
||
static PyObject *
|
||
typy_target (PyObject *self, PyObject *args)
|
||
{
|
||
struct type *type = ((type_object *) self)->type;
|
||
|
||
if (!TYPE_TARGET_TYPE (type))
|
||
{
|
||
PyErr_SetString (PyExc_RuntimeError,
|
||
_("Type does not have a target."));
|
||
return NULL;
|
||
}
|
||
|
||
return type_to_type_object (TYPE_TARGET_TYPE (type));
|
||
}
|
||
|
||
/* Return a const-qualified type variant. */
|
||
static PyObject *
|
||
typy_const (PyObject *self, PyObject *args)
|
||
{
|
||
struct type *type = ((type_object *) self)->type;
|
||
volatile struct gdb_exception except;
|
||
|
||
TRY_CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
type = make_cv_type (1, 0, type, NULL);
|
||
}
|
||
GDB_PY_HANDLE_EXCEPTION (except);
|
||
|
||
return type_to_type_object (type);
|
||
}
|
||
|
||
/* Return a volatile-qualified type variant. */
|
||
static PyObject *
|
||
typy_volatile (PyObject *self, PyObject *args)
|
||
{
|
||
struct type *type = ((type_object *) self)->type;
|
||
volatile struct gdb_exception except;
|
||
|
||
TRY_CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
type = make_cv_type (0, 1, type, NULL);
|
||
}
|
||
GDB_PY_HANDLE_EXCEPTION (except);
|
||
|
||
return type_to_type_object (type);
|
||
}
|
||
|
||
/* Return an unqualified type variant. */
|
||
static PyObject *
|
||
typy_unqualified (PyObject *self, PyObject *args)
|
||
{
|
||
struct type *type = ((type_object *) self)->type;
|
||
volatile struct gdb_exception except;
|
||
|
||
TRY_CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
type = make_cv_type (0, 0, type, NULL);
|
||
}
|
||
GDB_PY_HANDLE_EXCEPTION (except);
|
||
|
||
return type_to_type_object (type);
|
||
}
|
||
|
||
/* Return the size of the type represented by SELF, in bytes. */
|
||
static PyObject *
|
||
typy_get_sizeof (PyObject *self, void *closure)
|
||
{
|
||
struct type *type = ((type_object *) self)->type;
|
||
volatile struct gdb_exception except;
|
||
|
||
TRY_CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
check_typedef (type);
|
||
}
|
||
/* Ignore exceptions. */
|
||
|
||
return PyLong_FromLong (TYPE_LENGTH (type));
|
||
}
|
||
|
||
static struct type *
|
||
typy_lookup_typename (char *type_name, struct block *block)
|
||
{
|
||
struct type *type = NULL;
|
||
volatile struct gdb_exception except;
|
||
|
||
TRY_CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
if (!strncmp (type_name, "struct ", 7))
|
||
type = lookup_struct (type_name + 7, NULL);
|
||
else if (!strncmp (type_name, "union ", 6))
|
||
type = lookup_union (type_name + 6, NULL);
|
||
else if (!strncmp (type_name, "enum ", 5))
|
||
type = lookup_enum (type_name + 5, NULL);
|
||
else
|
||
type = lookup_typename (python_language, python_gdbarch,
|
||
type_name, block, 0);
|
||
}
|
||
if (except.reason < 0)
|
||
{
|
||
PyErr_Format (except.reason == RETURN_QUIT
|
||
? PyExc_KeyboardInterrupt : PyExc_RuntimeError,
|
||
"%s", except.message);
|
||
return NULL;
|
||
}
|
||
|
||
return type;
|
||
}
|
||
|
||
static struct type *
|
||
typy_lookup_type (struct demangle_component *demangled,
|
||
struct block *block)
|
||
{
|
||
struct type *type;
|
||
char *type_name;
|
||
enum demangle_component_type demangled_type;
|
||
|
||
/* Save the type: typy_lookup_type() may (indirectly) overwrite
|
||
memory pointed by demangled. */
|
||
demangled_type = demangled->type;
|
||
|
||
if (demangled_type == DEMANGLE_COMPONENT_POINTER
|
||
|| demangled_type == DEMANGLE_COMPONENT_REFERENCE
|
||
|| demangled_type == DEMANGLE_COMPONENT_CONST
|
||
|| demangled_type == DEMANGLE_COMPONENT_VOLATILE)
|
||
{
|
||
type = typy_lookup_type (demangled->u.s_binary.left, block);
|
||
if (! type)
|
||
return NULL;
|
||
|
||
switch (demangled_type)
|
||
{
|
||
case DEMANGLE_COMPONENT_REFERENCE:
|
||
return lookup_reference_type (type);
|
||
case DEMANGLE_COMPONENT_POINTER:
|
||
return lookup_pointer_type (type);
|
||
case DEMANGLE_COMPONENT_CONST:
|
||
return make_cv_type (1, 0, type, NULL);
|
||
case DEMANGLE_COMPONENT_VOLATILE:
|
||
return make_cv_type (0, 1, type, NULL);
|
||
}
|
||
}
|
||
|
||
type_name = cp_comp_to_string (demangled, 10);
|
||
type = typy_lookup_typename (type_name, block);
|
||
xfree (type_name);
|
||
|
||
return type;
|
||
}
|
||
|
||
/* This is a helper function for typy_template_argument that is used
|
||
when the type does not have template symbols attached. It works by
|
||
parsing the type name. This happens with compilers, like older
|
||
versions of GCC, that do not emit DW_TAG_template_*. */
|
||
|
||
static PyObject *
|
||
typy_legacy_template_argument (struct type *type, struct block *block,
|
||
int argno)
|
||
{
|
||
int i;
|
||
struct demangle_component *demangled;
|
||
const char *err;
|
||
struct type *argtype;
|
||
|
||
if (TYPE_NAME (type) == NULL)
|
||
{
|
||
PyErr_SetString (PyExc_RuntimeError, _("Null type name."));
|
||
return NULL;
|
||
}
|
||
|
||
/* Note -- this is not thread-safe. */
|
||
demangled = cp_demangled_name_to_comp (TYPE_NAME (type), &err);
|
||
if (! demangled)
|
||
{
|
||
PyErr_SetString (PyExc_RuntimeError, err);
|
||
return NULL;
|
||
}
|
||
|
||
/* Strip off component names. */
|
||
while (demangled->type == DEMANGLE_COMPONENT_QUAL_NAME
|
||
|| demangled->type == DEMANGLE_COMPONENT_LOCAL_NAME)
|
||
demangled = demangled->u.s_binary.right;
|
||
|
||
if (demangled->type != DEMANGLE_COMPONENT_TEMPLATE)
|
||
{
|
||
PyErr_SetString (PyExc_RuntimeError, _("Type is not a template."));
|
||
return NULL;
|
||
}
|
||
|
||
/* Skip from the template to the arguments. */
|
||
demangled = demangled->u.s_binary.right;
|
||
|
||
for (i = 0; demangled && i < argno; ++i)
|
||
demangled = demangled->u.s_binary.right;
|
||
|
||
if (! demangled)
|
||
{
|
||
PyErr_Format (PyExc_RuntimeError, _("No argument %d in template."),
|
||
argno);
|
||
return NULL;
|
||
}
|
||
|
||
argtype = typy_lookup_type (demangled->u.s_binary.left, block);
|
||
if (! argtype)
|
||
return NULL;
|
||
|
||
return type_to_type_object (argtype);
|
||
}
|
||
|
||
static PyObject *
|
||
typy_template_argument (PyObject *self, PyObject *args)
|
||
{
|
||
int argno;
|
||
struct type *type = ((type_object *) self)->type;
|
||
struct block *block = NULL;
|
||
PyObject *block_obj = NULL;
|
||
struct symbol *sym;
|
||
struct value *val = NULL;
|
||
volatile struct gdb_exception except;
|
||
|
||
if (! PyArg_ParseTuple (args, "i|O", &argno, &block_obj))
|
||
return NULL;
|
||
|
||
if (block_obj)
|
||
{
|
||
block = block_object_to_block (block_obj);
|
||
if (! block)
|
||
{
|
||
PyErr_SetString (PyExc_RuntimeError,
|
||
_("Second argument must be block."));
|
||
return NULL;
|
||
}
|
||
}
|
||
|
||
TRY_CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
type = check_typedef (type);
|
||
if (TYPE_CODE (type) == TYPE_CODE_REF)
|
||
type = check_typedef (TYPE_TARGET_TYPE (type));
|
||
}
|
||
GDB_PY_HANDLE_EXCEPTION (except);
|
||
|
||
/* We might not have DW_TAG_template_*, so try to parse the type's
|
||
name. This is inefficient if we do not have a template type --
|
||
but that is going to wind up as an error anyhow. */
|
||
if (! TYPE_N_TEMPLATE_ARGUMENTS (type))
|
||
return typy_legacy_template_argument (type, block, argno);
|
||
|
||
if (argno >= TYPE_N_TEMPLATE_ARGUMENTS (type))
|
||
{
|
||
PyErr_Format (PyExc_RuntimeError, _("No argument %d in template."),
|
||
argno);
|
||
return NULL;
|
||
}
|
||
|
||
sym = TYPE_TEMPLATE_ARGUMENT (type, argno);
|
||
if (SYMBOL_CLASS (sym) == LOC_TYPEDEF)
|
||
return type_to_type_object (SYMBOL_TYPE (sym));
|
||
else if (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT)
|
||
{
|
||
PyErr_Format (PyExc_RuntimeError,
|
||
_("Template argument is optimized out"));
|
||
return NULL;
|
||
}
|
||
|
||
TRY_CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
val = value_of_variable (sym, block);
|
||
}
|
||
GDB_PY_HANDLE_EXCEPTION (except);
|
||
|
||
return value_to_value_object (val);
|
||
}
|
||
|
||
static PyObject *
|
||
typy_str (PyObject *self)
|
||
{
|
||
volatile struct gdb_exception except;
|
||
char *thetype = NULL;
|
||
long length = 0;
|
||
PyObject *result;
|
||
|
||
TRY_CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
struct cleanup *old_chain;
|
||
struct ui_file *stb;
|
||
|
||
stb = mem_fileopen ();
|
||
old_chain = make_cleanup_ui_file_delete (stb);
|
||
|
||
type_print (type_object_to_type (self), "", stb, -1);
|
||
|
||
thetype = ui_file_xstrdup (stb, &length);
|
||
do_cleanups (old_chain);
|
||
}
|
||
if (except.reason < 0)
|
||
{
|
||
xfree (thetype);
|
||
GDB_PY_HANDLE_EXCEPTION (except);
|
||
}
|
||
|
||
result = PyUnicode_Decode (thetype, length, host_charset (), NULL);
|
||
xfree (thetype);
|
||
|
||
return result;
|
||
}
|
||
|
||
/* An entry in the type-equality bcache. */
|
||
|
||
typedef struct type_equality_entry
|
||
{
|
||
struct type *type1, *type2;
|
||
} type_equality_entry_d;
|
||
|
||
DEF_VEC_O (type_equality_entry_d);
|
||
|
||
/* A helper function to compare two strings. Returns 1 if they are
|
||
the same, 0 otherwise. Handles NULLs properly. */
|
||
|
||
static int
|
||
compare_strings (const char *s, const char *t)
|
||
{
|
||
if (s == NULL && t != NULL)
|
||
return 0;
|
||
else if (s != NULL && t == NULL)
|
||
return 0;
|
||
else if (s == NULL && t== NULL)
|
||
return 1;
|
||
return strcmp (s, t) == 0;
|
||
}
|
||
|
||
/* A helper function for typy_richcompare that checks two types for
|
||
"deep" equality. Returns Py_EQ if the types are considered the
|
||
same, Py_NE otherwise. */
|
||
|
||
static int
|
||
check_types_equal (struct type *type1, struct type *type2,
|
||
VEC (type_equality_entry_d) **worklist)
|
||
{
|
||
CHECK_TYPEDEF (type1);
|
||
CHECK_TYPEDEF (type2);
|
||
|
||
if (type1 == type2)
|
||
return Py_EQ;
|
||
|
||
if (TYPE_CODE (type1) != TYPE_CODE (type2)
|
||
|| TYPE_LENGTH (type1) != TYPE_LENGTH (type2)
|
||
|| TYPE_UNSIGNED (type1) != TYPE_UNSIGNED (type2)
|
||
|| TYPE_NOSIGN (type1) != TYPE_NOSIGN (type2)
|
||
|| TYPE_VARARGS (type1) != TYPE_VARARGS (type2)
|
||
|| TYPE_VECTOR (type1) != TYPE_VECTOR (type2)
|
||
|| TYPE_NOTTEXT (type1) != TYPE_NOTTEXT (type2)
|
||
|| TYPE_INSTANCE_FLAGS (type1) != TYPE_INSTANCE_FLAGS (type2)
|
||
|| TYPE_NFIELDS (type1) != TYPE_NFIELDS (type2))
|
||
return Py_NE;
|
||
|
||
if (!compare_strings (TYPE_TAG_NAME (type1), TYPE_TAG_NAME (type2)))
|
||
return Py_NE;
|
||
if (!compare_strings (TYPE_NAME (type1), TYPE_NAME (type2)))
|
||
return Py_NE;
|
||
|
||
if (TYPE_CODE (type1) == TYPE_CODE_RANGE)
|
||
{
|
||
if (memcmp (TYPE_RANGE_DATA (type1), TYPE_RANGE_DATA (type2),
|
||
sizeof (*TYPE_RANGE_DATA (type1))) != 0)
|
||
return Py_NE;
|
||
}
|
||
else
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < TYPE_NFIELDS (type1); ++i)
|
||
{
|
||
const struct field *field1 = &TYPE_FIELD (type1, i);
|
||
const struct field *field2 = &TYPE_FIELD (type2, i);
|
||
struct type_equality_entry entry;
|
||
|
||
if (FIELD_ARTIFICIAL (*field1) != FIELD_ARTIFICIAL (*field2)
|
||
|| FIELD_BITSIZE (*field1) != FIELD_BITSIZE (*field2)
|
||
|| FIELD_LOC_KIND (*field1) != FIELD_LOC_KIND (*field2))
|
||
return Py_NE;
|
||
if (!compare_strings (FIELD_NAME (*field1), FIELD_NAME (*field2)))
|
||
return Py_NE;
|
||
switch (FIELD_LOC_KIND (*field1))
|
||
{
|
||
case FIELD_LOC_KIND_BITPOS:
|
||
if (FIELD_BITPOS (*field1) != FIELD_BITPOS (*field2))
|
||
return Py_NE;
|
||
break;
|
||
case FIELD_LOC_KIND_PHYSADDR:
|
||
if (FIELD_STATIC_PHYSADDR (*field1)
|
||
!= FIELD_STATIC_PHYSADDR (*field2))
|
||
return Py_NE;
|
||
break;
|
||
case FIELD_LOC_KIND_PHYSNAME:
|
||
if (!compare_strings (FIELD_STATIC_PHYSNAME (*field1),
|
||
FIELD_STATIC_PHYSNAME (*field2)))
|
||
return Py_NE;
|
||
break;
|
||
}
|
||
|
||
entry.type1 = FIELD_TYPE (*field1);
|
||
entry.type2 = FIELD_TYPE (*field2);
|
||
VEC_safe_push (type_equality_entry_d, *worklist, &entry);
|
||
}
|
||
}
|
||
|
||
if (TYPE_TARGET_TYPE (type1) != NULL)
|
||
{
|
||
struct type_equality_entry entry;
|
||
int added;
|
||
|
||
if (TYPE_TARGET_TYPE (type2) == NULL)
|
||
return Py_NE;
|
||
|
||
entry.type1 = TYPE_TARGET_TYPE (type1);
|
||
entry.type2 = TYPE_TARGET_TYPE (type2);
|
||
VEC_safe_push (type_equality_entry_d, *worklist, &entry);
|
||
}
|
||
else if (TYPE_TARGET_TYPE (type2) != NULL)
|
||
return Py_NE;
|
||
|
||
return Py_EQ;
|
||
}
|
||
|
||
/* Check types on a worklist for equality. Returns Py_NE if any pair
|
||
is not equal, Py_EQ if they are all considered equal. */
|
||
|
||
static int
|
||
check_types_worklist (VEC (type_equality_entry_d) **worklist,
|
||
struct bcache *cache)
|
||
{
|
||
while (!VEC_empty (type_equality_entry_d, *worklist))
|
||
{
|
||
struct type_equality_entry entry;
|
||
int added;
|
||
|
||
entry = *VEC_last (type_equality_entry_d, *worklist);
|
||
VEC_pop (type_equality_entry_d, *worklist);
|
||
|
||
/* If the type pair has already been visited, we know it is
|
||
ok. */
|
||
bcache_full (&entry, sizeof (entry), cache, &added);
|
||
if (!added)
|
||
continue;
|
||
|
||
if (check_types_equal (entry.type1, entry.type2, worklist) == Py_NE)
|
||
return Py_NE;
|
||
}
|
||
|
||
return Py_EQ;
|
||
}
|
||
|
||
/* Implement the richcompare method. */
|
||
|
||
static PyObject *
|
||
typy_richcompare (PyObject *self, PyObject *other, int op)
|
||
{
|
||
int result = Py_NE;
|
||
struct type *type1 = type_object_to_type (self);
|
||
struct type *type2 = type_object_to_type (other);
|
||
volatile struct gdb_exception except;
|
||
|
||
/* We can only compare ourselves to another Type object, and only
|
||
for equality or inequality. */
|
||
if (type2 == NULL || (op != Py_EQ && op != Py_NE))
|
||
{
|
||
Py_INCREF (Py_NotImplemented);
|
||
return Py_NotImplemented;
|
||
}
|
||
|
||
if (type1 == type2)
|
||
result = Py_EQ;
|
||
else
|
||
{
|
||
struct bcache *cache;
|
||
VEC (type_equality_entry_d) *worklist = NULL;
|
||
struct type_equality_entry entry;
|
||
|
||
cache = bcache_xmalloc (NULL, NULL);
|
||
|
||
entry.type1 = type1;
|
||
entry.type2 = type2;
|
||
VEC_safe_push (type_equality_entry_d, worklist, &entry);
|
||
|
||
TRY_CATCH (except, RETURN_MASK_ALL)
|
||
{
|
||
result = check_types_worklist (&worklist, cache);
|
||
}
|
||
if (except.reason < 0)
|
||
result = Py_NE;
|
||
|
||
bcache_xfree (cache);
|
||
VEC_free (type_equality_entry_d, worklist);
|
||
}
|
||
|
||
if (op == result)
|
||
Py_RETURN_TRUE;
|
||
Py_RETURN_FALSE;
|
||
}
|
||
|
||
|
||
|
||
static const struct objfile_data *typy_objfile_data_key;
|
||
|
||
static void
|
||
save_objfile_types (struct objfile *objfile, void *datum)
|
||
{
|
||
type_object *obj = datum;
|
||
htab_t copied_types;
|
||
struct cleanup *cleanup;
|
||
|
||
/* This prevents another thread from freeing the objects we're
|
||
operating on. */
|
||
cleanup = ensure_python_env (get_objfile_arch (objfile), current_language);
|
||
|
||
copied_types = create_copied_types_hash (objfile);
|
||
|
||
while (obj)
|
||
{
|
||
type_object *next = obj->next;
|
||
|
||
htab_empty (copied_types);
|
||
|
||
obj->type = copy_type_recursive (objfile, obj->type, copied_types);
|
||
|
||
obj->next = NULL;
|
||
obj->prev = NULL;
|
||
|
||
obj = next;
|
||
}
|
||
|
||
htab_delete (copied_types);
|
||
|
||
do_cleanups (cleanup);
|
||
}
|
||
|
||
static void
|
||
set_type (type_object *obj, struct type *type)
|
||
{
|
||
obj->type = type;
|
||
obj->prev = NULL;
|
||
if (type && TYPE_OBJFILE (type))
|
||
{
|
||
struct objfile *objfile = TYPE_OBJFILE (type);
|
||
|
||
obj->next = objfile_data (objfile, typy_objfile_data_key);
|
||
if (obj->next)
|
||
obj->next->prev = obj;
|
||
set_objfile_data (objfile, typy_objfile_data_key, obj);
|
||
}
|
||
else
|
||
obj->next = NULL;
|
||
}
|
||
|
||
static void
|
||
typy_dealloc (PyObject *obj)
|
||
{
|
||
type_object *type = (type_object *) obj;
|
||
|
||
if (type->prev)
|
||
type->prev->next = type->next;
|
||
else if (type->type && TYPE_OBJFILE (type->type))
|
||
{
|
||
/* Must reset head of list. */
|
||
struct objfile *objfile = TYPE_OBJFILE (type->type);
|
||
|
||
if (objfile)
|
||
set_objfile_data (objfile, typy_objfile_data_key, type->next);
|
||
}
|
||
if (type->next)
|
||
type->next->prev = type->prev;
|
||
|
||
type->ob_type->tp_free (type);
|
||
}
|
||
|
||
/* Create a new Type referring to TYPE. */
|
||
PyObject *
|
||
type_to_type_object (struct type *type)
|
||
{
|
||
type_object *type_obj;
|
||
|
||
type_obj = PyObject_New (type_object, &type_object_type);
|
||
if (type_obj)
|
||
set_type (type_obj, type);
|
||
|
||
return (PyObject *) type_obj;
|
||
}
|
||
|
||
struct type *
|
||
type_object_to_type (PyObject *obj)
|
||
{
|
||
if (! PyObject_TypeCheck (obj, &type_object_type))
|
||
return NULL;
|
||
return ((type_object *) obj)->type;
|
||
}
|
||
|
||
|
||
|
||
/* Implementation of gdb.lookup_type. */
|
||
PyObject *
|
||
gdbpy_lookup_type (PyObject *self, PyObject *args, PyObject *kw)
|
||
{
|
||
static char *keywords[] = { "name", "block", NULL };
|
||
char *type_name = NULL;
|
||
struct type *type = NULL;
|
||
PyObject *block_obj = NULL;
|
||
struct block *block = NULL;
|
||
|
||
if (! PyArg_ParseTupleAndKeywords (args, kw, "s|O", keywords,
|
||
&type_name, &block_obj))
|
||
return NULL;
|
||
|
||
if (block_obj)
|
||
{
|
||
block = block_object_to_block (block_obj);
|
||
if (! block)
|
||
{
|
||
PyErr_SetString (PyExc_RuntimeError,
|
||
_("'block' argument must be a Block."));
|
||
return NULL;
|
||
}
|
||
}
|
||
|
||
type = typy_lookup_typename (type_name, block);
|
||
if (! type)
|
||
return NULL;
|
||
|
||
return (PyObject *) type_to_type_object (type);
|
||
}
|
||
|
||
void
|
||
gdbpy_initialize_types (void)
|
||
{
|
||
int i;
|
||
|
||
typy_objfile_data_key
|
||
= register_objfile_data_with_cleanup (save_objfile_types, NULL);
|
||
|
||
if (PyType_Ready (&type_object_type) < 0)
|
||
return;
|
||
if (PyType_Ready (&field_object_type) < 0)
|
||
return;
|
||
|
||
for (i = 0; pyty_codes[i].name; ++i)
|
||
{
|
||
if (PyModule_AddIntConstant (gdb_module,
|
||
/* Cast needed for Python 2.4. */
|
||
(char *) pyty_codes[i].name,
|
||
pyty_codes[i].code) < 0)
|
||
return;
|
||
}
|
||
|
||
Py_INCREF (&type_object_type);
|
||
PyModule_AddObject (gdb_module, "Type", (PyObject *) &type_object_type);
|
||
|
||
Py_INCREF (&field_object_type);
|
||
PyModule_AddObject (gdb_module, "Field", (PyObject *) &field_object_type);
|
||
}
|
||
|
||
|
||
|
||
static PyGetSetDef type_object_getset[] =
|
||
{
|
||
{ "code", typy_get_code, NULL,
|
||
"The code for this type.", NULL },
|
||
{ "sizeof", typy_get_sizeof, NULL,
|
||
"The size of this type, in bytes.", NULL },
|
||
{ "tag", typy_get_tag, NULL,
|
||
"The tag name for this type, or None.", NULL },
|
||
{ NULL }
|
||
};
|
||
|
||
static PyMethodDef type_object_methods[] =
|
||
{
|
||
{ "array", typy_array, METH_VARARGS,
|
||
"array (N) -> Type\n\
|
||
Return a type which represents an array of N objects of this type." },
|
||
{ "const", typy_const, METH_NOARGS,
|
||
"const () -> Type\n\
|
||
Return a const variant of this type." },
|
||
{ "fields", typy_fields, METH_NOARGS,
|
||
"field () -> list\n\
|
||
Return a sequence holding all the fields of this type.\n\
|
||
Each field is a dictionary." },
|
||
{ "pointer", typy_pointer, METH_NOARGS,
|
||
"pointer () -> Type\n\
|
||
Return a type of pointer to this type." },
|
||
{ "range", typy_range, METH_NOARGS,
|
||
"range () -> tuple\n\
|
||
Return a tuple containing the lower and upper range for this type."},
|
||
{ "reference", typy_reference, METH_NOARGS,
|
||
"reference () -> Type\n\
|
||
Return a type of reference to this type." },
|
||
{ "strip_typedefs", typy_strip_typedefs, METH_NOARGS,
|
||
"strip_typedefs () -> Type\n\
|
||
Return a type formed by stripping this type of all typedefs."},
|
||
{ "target", typy_target, METH_NOARGS,
|
||
"target () -> Type\n\
|
||
Return the target type of this type." },
|
||
{ "template_argument", typy_template_argument, METH_VARARGS,
|
||
"template_argument (arg, [block]) -> Type\n\
|
||
Return the type of a template argument." },
|
||
{ "unqualified", typy_unqualified, METH_NOARGS,
|
||
"unqualified () -> Type\n\
|
||
Return a variant of this type without const or volatile attributes." },
|
||
{ "volatile", typy_volatile, METH_NOARGS,
|
||
"volatile () -> Type\n\
|
||
Return a volatile variant of this type" },
|
||
{ NULL }
|
||
};
|
||
|
||
static PyTypeObject type_object_type =
|
||
{
|
||
PyObject_HEAD_INIT (NULL)
|
||
0, /*ob_size*/
|
||
"gdb.Type", /*tp_name*/
|
||
sizeof (type_object), /*tp_basicsize*/
|
||
0, /*tp_itemsize*/
|
||
typy_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*/
|
||
typy_str, /*tp_str*/
|
||
0, /*tp_getattro*/
|
||
0, /*tp_setattro*/
|
||
0, /*tp_as_buffer*/
|
||
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_ITER, /*tp_flags*/
|
||
"GDB type object", /* tp_doc */
|
||
0, /* tp_traverse */
|
||
0, /* tp_clear */
|
||
typy_richcompare, /* tp_richcompare */
|
||
0, /* tp_weaklistoffset */
|
||
0, /* tp_iter */
|
||
0, /* tp_iternext */
|
||
type_object_methods, /* tp_methods */
|
||
0, /* tp_members */
|
||
type_object_getset, /* 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 */
|
||
0, /* tp_new */
|
||
};
|
||
|
||
static PyTypeObject field_object_type =
|
||
{
|
||
PyObject_HEAD_INIT (NULL)
|
||
0, /*ob_size*/
|
||
"gdb.Field", /*tp_name*/
|
||
sizeof (field_object), /*tp_basicsize*/
|
||
0, /*tp_itemsize*/
|
||
field_dealloc, /*tp_dealloc*/
|
||
0, /*tp_print*/
|
||
0, /*tp_getattr*/
|
||
0, /*tp_setattr*/
|
||
0, /*tp_compare*/
|
||
0, /*tp_repr*/
|
||
0, /*tp_as_number*/
|
||
0, /*tp_as_sequence*/
|
||
0, /*tp_as_mapping*/
|
||
0, /*tp_hash */
|
||
0, /*tp_call*/
|
||
0, /*tp_str*/
|
||
0, /*tp_getattro*/
|
||
0, /*tp_setattro*/
|
||
0, /*tp_as_buffer*/
|
||
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_ITER, /*tp_flags*/
|
||
"GDB field object", /* tp_doc */
|
||
0, /* tp_traverse */
|
||
0, /* tp_clear */
|
||
0, /* tp_richcompare */
|
||
0, /* tp_weaklistoffset */
|
||
0, /* tp_iter */
|
||
0, /* tp_iternext */
|
||
0, /* tp_methods */
|
||
0, /* tp_members */
|
||
0, /* tp_getset */
|
||
0, /* tp_base */
|
||
0, /* tp_dict */
|
||
0, /* tp_descr_get */
|
||
0, /* tp_descr_set */
|
||
offsetof (field_object, dict), /* tp_dictoffset */
|
||
0, /* tp_init */
|
||
0, /* tp_alloc */
|
||
0, /* tp_new */
|
||
};
|