mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
a6e6f79133
With Python 2.4, we see this build failure:
./python/python-internal.h: In function 'gdb_Py_DECREF':
./python/python-internal.h:179: warning: dereferencing 'void *' pointer
./python/python-internal.h:179: error: request for member 'ob_refcnt' in something not a structure or union
Python 2.4 forgets to cast 'op' to PyObject pointer on the ob_refcnt
accesses:
#define Py_DECREF(op) \
if (_Py_DEC_REFTOTAL _Py_REF_DEBUG_COMMA \
--(op)->ob_refcnt != 0) \
_Py_CHECK_REFCNT(op) \
else \
_Py_Dealloc((PyObject *)(op))
...
#define _Py_CHECK_REFCNT(OP) \
{ if ((OP)->ob_refcnt < 0) \
_Py_NegativeRefcount(__FILE__, __LINE__, \
(PyObject *)(OP)); \
}
Python 2.7:
#define Py_DECREF(op) \
do { \
if (_Py_DEC_REFTOTAL _Py_REF_DEBUG_COMMA \
--((PyObject*)(op))->ob_refcnt != 0) \
_Py_CHECK_REFCNT(op) \
else \
_Py_Dealloc((PyObject *)(op)); \
} while (0)
...
#define _Py_CHECK_REFCNT(OP) \
{ if (((PyObject*)OP)->ob_refcnt < 0) \
_Py_NegativeRefcount(__FILE__, __LINE__, \
(PyObject *)(OP)); \
}
gdb/
2013-05-30 Pedro Alves <palves@redhat.com>
* python/python-internal.h (gdb_Py_DECREF): Cast OP to PyObject
pointer.
496 lines
18 KiB
C
496 lines
18 KiB
C
/* Gdb/Python header for private use by Python module.
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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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#ifndef GDB_PYTHON_INTERNAL_H
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#define GDB_PYTHON_INTERNAL_H
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/* These WITH_* macros are defined by the CPython API checker that
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comes with the Python plugin for GCC. See:
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https://gcc-python-plugin.readthedocs.org/en/latest/cpychecker.html
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The checker defines a WITH_ macro for each attribute it
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exposes. */
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#ifdef WITH_CPYCHECKER_RETURNS_BORROWED_REF_ATTRIBUTE
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#define CPYCHECKER_RETURNS_BORROWED_REF \
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__attribute__ ((cpychecker_returns_borrowed_ref))
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#else
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#define CPYCHECKER_RETURNS_BORROWED_REF
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#endif
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#ifdef WITH_CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF_ATTRIBUTE
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#define CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF(ARG) \
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__attribute__ ((cpychecker_type_object_for_typedef (ARG)))
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#else
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#define CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF(ARG)
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#endif
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#ifdef WITH_CPYCHECKER_STEALS_REFERENCE_TO_ARG_ATTRIBUTE
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#define CPYCHECKER_STEALS_REFERENCE_TO_ARG(n) \
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__attribute__ ((cpychecker_steals_reference_to_arg (n)))
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#else
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#define CPYCHECKER_STEALS_REFERENCE_TO_ARG(n)
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#endif
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#ifdef WITH_CPYCHECKER_SETS_EXCEPTION_ATTRIBUTE
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#define CPYCHECKER_SETS_EXCEPTION __attribute__ ((cpychecker_sets_exception))
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#else
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#define CPYCHECKER_SETS_EXCEPTION
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#endif
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#ifdef WITH_CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION_ATTRIBUTE
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#define CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION \
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__attribute__ ((cpychecker_negative_result_sets_exception))
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#else
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#define CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION
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#endif
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#include <stdio.h>
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/* Python 2.4 doesn't include stdint.h soon enough to get {u,}intptr_t
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needed by pyport.h. */
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#include <stdint.h>
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/* /usr/include/features.h on linux systems will define _POSIX_C_SOURCE
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if it sees _GNU_SOURCE (which config.h will define).
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pyconfig.h defines _POSIX_C_SOURCE to a different value than
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/usr/include/features.h does causing compilation to fail.
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To work around this, undef _POSIX_C_SOURCE before we include Python.h.
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Same problem with _XOPEN_SOURCE. */
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#undef _POSIX_C_SOURCE
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#undef _XOPEN_SOURCE
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/* On sparc-solaris, /usr/include/sys/feature_tests.h defines
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_FILE_OFFSET_BITS, which pyconfig.h also defines. Same work
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around technique as above. */
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#undef _FILE_OFFSET_BITS
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/* A kludge to avoid redefinition of snprintf on Windows by pyerrors.h. */
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#if defined(_WIN32) && defined(HAVE_DECL_SNPRINTF)
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#define HAVE_SNPRINTF 1
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#endif
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/* Request clean size types from Python. */
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#define PY_SSIZE_T_CLEAN
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/* Include the Python header files using angle brackets rather than
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double quotes. On case-insensitive filesystems, this prevents us
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from including our python/python.h header file. */
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#include <Python.h>
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#include <frameobject.h>
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#if PY_MAJOR_VERSION >= 3
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#define IS_PY3K 1
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#endif
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#ifdef IS_PY3K
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#define Py_TPFLAGS_HAVE_ITER 0
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#define Py_TPFLAGS_CHECKTYPES 0
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#define PyInt_Check PyLong_Check
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#define PyInt_FromLong PyLong_FromLong
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#define PyInt_AsLong PyLong_AsLong
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#define PyString_FromString PyUnicode_FromString
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#define PyString_Decode PyUnicode_Decode
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#define PyString_FromFormat PyUnicode_FromFormat
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#define PyString_Check PyUnicode_Check
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#endif
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#if HAVE_LIBPYTHON2_4
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/* Py_ssize_t is not defined until 2.5.
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Logical type for Py_ssize_t is Py_intptr_t, but that fails in 64-bit
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compilation due to several apparent mistakes in python2.4 API, so we
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use 'int' instead. */
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typedef int Py_ssize_t;
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#endif
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#ifndef PyVarObject_HEAD_INIT
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/* Python 2.4 does not define PyVarObject_HEAD_INIT. */
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#define PyVarObject_HEAD_INIT(type, size) \
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PyObject_HEAD_INIT(type) size,
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#endif
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#ifndef Py_TYPE
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/* Python 2.4 does not define Py_TYPE. */
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#define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
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#endif
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/* If Python.h does not define WITH_THREAD, then the various
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GIL-related functions will not be defined. However,
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PyGILState_STATE will be. */
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#ifndef WITH_THREAD
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#define PyGILState_Ensure() ((PyGILState_STATE) 0)
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#define PyGILState_Release(ARG) ((void)(ARG))
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#define PyEval_InitThreads()
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#define PyThreadState_Swap(ARG) ((void)(ARG))
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#define PyEval_ReleaseLock()
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#endif
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/* Python supplies HAVE_LONG_LONG and some `long long' support when it
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is available. These defines let us handle the differences more
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cleanly. */
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#ifdef HAVE_LONG_LONG
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#define GDB_PY_LL_ARG "L"
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#define GDB_PY_LLU_ARG "K"
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typedef PY_LONG_LONG gdb_py_longest;
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typedef unsigned PY_LONG_LONG gdb_py_ulongest;
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#define gdb_py_long_from_longest PyLong_FromLongLong
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#define gdb_py_long_from_ulongest PyLong_FromUnsignedLongLong
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#define gdb_py_long_as_ulongest PyLong_AsUnsignedLongLong
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#else /* HAVE_LONG_LONG */
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#define GDB_PY_LL_ARG "L"
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#define GDB_PY_LLU_ARG "K"
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typedef long gdb_py_longest;
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typedef unsigned long gdb_py_ulongest;
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#define gdb_py_long_from_longest PyLong_FromLong
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#define gdb_py_long_from_ulongest PyLong_FromUnsignedLong
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#define gdb_py_long_as_ulongest PyLong_AsUnsignedLong
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#endif /* HAVE_LONG_LONG */
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/* Python 2.6 did not wrap Py_DECREF in 'do {...} while (0)', leading
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to 'suggest explicit braces to avoid ambiguous ‘else’' gcc errors.
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Wrap it ourselves, so that callers don't need to care. */
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static inline void
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gdb_Py_DECREF (void *op) /* ARI: editCase function */
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{
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/* ... and Python 2.4 didn't cast OP to PyObject pointer on the
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'(op)->ob_refcnt' references within the macro. Cast it ourselves
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too. */
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Py_DECREF ((PyObject *) op);
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}
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#undef Py_DECREF
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#define Py_DECREF(op) gdb_Py_DECREF (op)
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/* In order to be able to parse symtab_and_line_to_sal_object function
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a real symtab_and_line structure is needed. */
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#include "symtab.h"
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/* Also needed to parse enum var_types. */
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#include "command.h"
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#include "breakpoint.h"
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#include "exceptions.h"
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enum gdbpy_iter_kind { iter_keys, iter_values, iter_items };
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struct block;
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struct value;
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struct language_defn;
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struct program_space;
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struct bpstats;
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struct inferior;
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extern int gdb_python_initialized;
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extern PyObject *gdb_module;
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extern PyObject *gdb_python_module;
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extern PyTypeObject value_object_type
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CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("value_object");
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extern PyTypeObject block_object_type
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CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF("block_object");
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extern PyTypeObject symbol_object_type
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CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("symbol_object");
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extern PyTypeObject event_object_type
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CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object");
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extern PyTypeObject stop_event_object_type
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CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object");
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extern PyTypeObject breakpoint_object_type
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CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("breakpoint_object");
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extern PyTypeObject frame_object_type
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CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("frame_object");
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typedef struct breakpoint_object
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{
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PyObject_HEAD
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/* The breakpoint number according to gdb. */
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int number;
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/* The gdb breakpoint object, or NULL if the breakpoint has been
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deleted. */
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struct breakpoint *bp;
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/* 1 is this is a FinishBreakpoint object, 0 otherwise. */
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int is_finish_bp;
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} breakpoint_object;
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/* Require that BREAKPOINT be a valid breakpoint ID; throw a Python
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exception if it is invalid. */
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#define BPPY_REQUIRE_VALID(Breakpoint) \
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do { \
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if ((Breakpoint)->bp == NULL) \
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return PyErr_Format (PyExc_RuntimeError, \
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_("Breakpoint %d is invalid."), \
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(Breakpoint)->number); \
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} while (0)
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/* Require that BREAKPOINT be a valid breakpoint ID; throw a Python
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exception if it is invalid. This macro is for use in setter functions. */
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#define BPPY_SET_REQUIRE_VALID(Breakpoint) \
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do { \
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if ((Breakpoint)->bp == NULL) \
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{ \
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PyErr_Format (PyExc_RuntimeError, _("Breakpoint %d is invalid."), \
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(Breakpoint)->number); \
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return -1; \
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} \
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} while (0)
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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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extern breakpoint_object *bppy_pending_object;
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typedef struct
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{
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PyObject_HEAD
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/* The thread we represent. */
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struct thread_info *thread;
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/* The Inferior object to which this thread belongs. */
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PyObject *inf_obj;
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} thread_object;
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extern struct cmd_list_element *set_python_list;
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extern struct cmd_list_element *show_python_list;
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PyObject *gdbpy_history (PyObject *self, PyObject *args);
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PyObject *gdbpy_breakpoints (PyObject *, PyObject *);
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PyObject *gdbpy_frame_stop_reason_string (PyObject *, PyObject *);
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PyObject *gdbpy_lookup_symbol (PyObject *self, PyObject *args, PyObject *kw);
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PyObject *gdbpy_lookup_global_symbol (PyObject *self, PyObject *args,
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PyObject *kw);
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PyObject *gdbpy_newest_frame (PyObject *self, PyObject *args);
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PyObject *gdbpy_selected_frame (PyObject *self, PyObject *args);
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PyObject *gdbpy_block_for_pc (PyObject *self, PyObject *args);
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PyObject *gdbpy_lookup_type (PyObject *self, PyObject *args, PyObject *kw);
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PyObject *gdbpy_create_lazy_string_object (CORE_ADDR address, long length,
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const char *encoding,
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struct type *type);
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PyObject *gdbpy_inferiors (PyObject *unused, PyObject *unused2);
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PyObject *gdbpy_selected_thread (PyObject *self, PyObject *args);
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PyObject *gdbpy_selected_inferior (PyObject *self, PyObject *args);
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PyObject *gdbpy_string_to_argv (PyObject *self, PyObject *args);
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PyObject *gdbpy_parameter (PyObject *self, PyObject *args);
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PyObject *gdbpy_parameter_value (enum var_types type, void *var);
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char *gdbpy_parse_command_name (const char *name,
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struct cmd_list_element ***base_list,
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struct cmd_list_element **start_list);
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PyObject *symtab_and_line_to_sal_object (struct symtab_and_line sal);
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PyObject *symtab_to_symtab_object (struct symtab *symtab);
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PyObject *symbol_to_symbol_object (struct symbol *sym);
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PyObject *block_to_block_object (const struct block *block,
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struct objfile *objfile);
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PyObject *value_to_value_object (struct value *v);
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PyObject *type_to_type_object (struct type *);
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PyObject *frame_info_to_frame_object (struct frame_info *frame);
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PyObject *pspace_to_pspace_object (struct program_space *)
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CPYCHECKER_RETURNS_BORROWED_REF;
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PyObject *pspy_get_printers (PyObject *, void *);
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PyObject *pspy_get_frame_filters (PyObject *, void *);
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PyObject *objfile_to_objfile_object (struct objfile *)
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CPYCHECKER_RETURNS_BORROWED_REF;
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PyObject *objfpy_get_printers (PyObject *, void *);
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PyObject *objfpy_get_frame_filters (PyObject *, void *);
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PyObject *gdbarch_to_arch_object (struct gdbarch *gdbarch);
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thread_object *create_thread_object (struct thread_info *tp);
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thread_object *find_thread_object (ptid_t ptid)
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CPYCHECKER_RETURNS_BORROWED_REF;
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PyObject *find_inferior_object (int pid);
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PyObject *inferior_to_inferior_object (struct inferior *inferior);
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const struct block *block_object_to_block (PyObject *obj);
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struct symbol *symbol_object_to_symbol (PyObject *obj);
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struct value *value_object_to_value (PyObject *self);
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struct value *convert_value_from_python (PyObject *obj);
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struct type *type_object_to_type (PyObject *obj);
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struct symtab *symtab_object_to_symtab (PyObject *obj);
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struct symtab_and_line *sal_object_to_symtab_and_line (PyObject *obj);
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struct frame_info *frame_object_to_frame_info (PyObject *frame_obj);
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struct gdbarch *arch_object_to_gdbarch (PyObject *obj);
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void gdbpy_initialize_gdb_readline (void);
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int gdbpy_initialize_auto_load (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_values (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_frames (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_symtabs (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_commands (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_symbols (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_symtabs (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_blocks (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_types (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_functions (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_pspace (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_objfile (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_breakpoints (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_finishbreakpoints (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_lazy_string (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_parameters (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_thread (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_inferior (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_eventregistry (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_event (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_py_events (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_stop_event (void)
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||
CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_signal_event (void)
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||
CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_breakpoint_event (void)
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||
CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_continue_event (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_exited_event (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_thread_event (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_new_objfile_event (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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int gdbpy_initialize_arch (void)
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CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
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struct cleanup *make_cleanup_py_decref (PyObject *py);
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struct cleanup *make_cleanup_py_xdecref (PyObject *py);
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struct cleanup *ensure_python_env (struct gdbarch *gdbarch,
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const struct language_defn *language);
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extern struct gdbarch *python_gdbarch;
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extern const struct language_defn *python_language;
|
||
|
||
/* Use this after a TRY_EXCEPT to throw the appropriate Python
|
||
exception. */
|
||
#define GDB_PY_HANDLE_EXCEPTION(Exception) \
|
||
do { \
|
||
if (Exception.reason < 0) \
|
||
{ \
|
||
gdbpy_convert_exception (Exception); \
|
||
return NULL; \
|
||
} \
|
||
} while (0)
|
||
|
||
/* Use this after a TRY_EXCEPT to throw the appropriate Python
|
||
exception. This macro is for use inside setter functions. */
|
||
#define GDB_PY_SET_HANDLE_EXCEPTION(Exception) \
|
||
do { \
|
||
if (Exception.reason < 0) \
|
||
{ \
|
||
gdbpy_convert_exception (Exception); \
|
||
return -1; \
|
||
} \
|
||
} while (0)
|
||
|
||
void gdbpy_print_stack (void);
|
||
|
||
void source_python_script_for_objfile (struct objfile *objfile, FILE *file,
|
||
const char *filename);
|
||
|
||
PyObject *python_string_to_unicode (PyObject *obj);
|
||
char *unicode_to_target_string (PyObject *unicode_str);
|
||
char *python_string_to_target_string (PyObject *obj);
|
||
PyObject *python_string_to_target_python_string (PyObject *obj);
|
||
char *python_string_to_host_string (PyObject *obj);
|
||
int gdbpy_is_string (PyObject *obj);
|
||
char *gdbpy_obj_to_string (PyObject *obj);
|
||
char *gdbpy_exception_to_string (PyObject *ptype, PyObject *pvalue);
|
||
|
||
int gdbpy_is_lazy_string (PyObject *result);
|
||
void gdbpy_extract_lazy_string (PyObject *string, CORE_ADDR *addr,
|
||
struct type **str_type,
|
||
long *length, char **encoding);
|
||
|
||
int gdbpy_is_value_object (PyObject *obj);
|
||
|
||
/* Note that these are declared here, and not in python.h with the
|
||
other pretty-printer functions, because they refer to PyObject. */
|
||
PyObject *apply_varobj_pretty_printer (PyObject *print_obj,
|
||
struct value **replacement,
|
||
struct ui_file *stream);
|
||
PyObject *gdbpy_get_varobj_pretty_printer (struct value *value);
|
||
char *gdbpy_get_display_hint (PyObject *printer);
|
||
PyObject *gdbpy_default_visualizer (PyObject *self, PyObject *args);
|
||
|
||
void bpfinishpy_pre_stop_hook (struct breakpoint_object *bp_obj);
|
||
void bpfinishpy_post_stop_hook (struct breakpoint_object *bp_obj);
|
||
|
||
extern PyObject *gdbpy_doc_cst;
|
||
extern PyObject *gdbpy_children_cst;
|
||
extern PyObject *gdbpy_to_string_cst;
|
||
extern PyObject *gdbpy_display_hint_cst;
|
||
extern PyObject *gdbpy_enabled_cst;
|
||
extern PyObject *gdbpy_value_cst;
|
||
|
||
/* Exception types. */
|
||
extern PyObject *gdbpy_gdb_error;
|
||
extern PyObject *gdbpy_gdb_memory_error;
|
||
extern PyObject *gdbpy_gdberror_exc;
|
||
|
||
extern void gdbpy_convert_exception (struct gdb_exception)
|
||
CPYCHECKER_SETS_EXCEPTION;
|
||
|
||
int get_addr_from_python (PyObject *obj, CORE_ADDR *addr)
|
||
CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
|
||
|
||
PyObject *gdb_py_object_from_longest (LONGEST l);
|
||
PyObject *gdb_py_object_from_ulongest (ULONGEST l);
|
||
int gdb_py_int_as_long (PyObject *, long *);
|
||
|
||
PyObject *gdb_py_generic_dict (PyObject *self, void *closure);
|
||
|
||
int gdb_pymodule_addobject (PyObject *module, const char *name,
|
||
PyObject *object)
|
||
CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
|
||
|
||
#endif /* GDB_PYTHON_INTERNAL_H */
|