| /* Python interface to inferiors. |
| |
| Copyright (C) 2009-2020 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| 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/>. */ |
| |
| #include "defs.h" |
| #include "gdbcore.h" |
| #include "gdbthread.h" |
| #include "inferior.h" |
| #include "objfiles.h" |
| #include "observable.h" |
| #include "python-internal.h" |
| #include "arch-utils.h" |
| #include "language.h" |
| #include "gdbsupport/gdb_signals.h" |
| #include "py-event.h" |
| #include "py-stopevent.h" |
| |
| struct threadlist_entry |
| { |
| threadlist_entry (gdbpy_ref<thread_object> &&ref) |
| : thread_obj (std::move (ref)) |
| { |
| } |
| |
| gdbpy_ref<thread_object> thread_obj; |
| struct threadlist_entry *next; |
| }; |
| |
| struct inferior_object |
| { |
| PyObject_HEAD |
| |
| /* The inferior we represent. */ |
| struct inferior *inferior; |
| |
| /* thread_object instances under this inferior. This list owns a |
| reference to each object it contains. */ |
| struct threadlist_entry *threads; |
| |
| /* Number of threads in the list. */ |
| int nthreads; |
| }; |
| |
| extern PyTypeObject inferior_object_type |
| CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("inferior_object"); |
| |
| static const struct inferior_data *infpy_inf_data_key; |
| |
| typedef struct { |
| PyObject_HEAD |
| void *buffer; |
| |
| /* These are kept just for mbpy_str. */ |
| CORE_ADDR addr; |
| CORE_ADDR length; |
| } membuf_object; |
| |
| extern PyTypeObject membuf_object_type |
| CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("membuf_object"); |
| |
| /* Require that INFERIOR be a valid inferior ID. */ |
| #define INFPY_REQUIRE_VALID(Inferior) \ |
| do { \ |
| if (!Inferior->inferior) \ |
| { \ |
| PyErr_SetString (PyExc_RuntimeError, \ |
| _("Inferior no longer exists.")); \ |
| return NULL; \ |
| } \ |
| } while (0) |
| |
| static void |
| python_on_normal_stop (struct bpstats *bs, int print_frame) |
| { |
| enum gdb_signal stop_signal; |
| |
| if (!gdb_python_initialized) |
| return; |
| |
| if (inferior_ptid == null_ptid) |
| return; |
| |
| stop_signal = inferior_thread ()->suspend.stop_signal; |
| |
| gdbpy_enter enter_py (get_current_arch (), current_language); |
| |
| if (emit_stop_event (bs, stop_signal) < 0) |
| gdbpy_print_stack (); |
| } |
| |
| static void |
| python_on_resume (ptid_t ptid) |
| { |
| if (!gdb_python_initialized) |
| return; |
| |
| gdbpy_enter enter_py (target_gdbarch (), current_language); |
| |
| if (emit_continue_event (ptid) < 0) |
| gdbpy_print_stack (); |
| } |
| |
| /* Callback, registered as an observer, that notifies Python listeners |
| when an inferior function call is about to be made. */ |
| |
| static void |
| python_on_inferior_call_pre (ptid_t thread, CORE_ADDR address) |
| { |
| gdbpy_enter enter_py (target_gdbarch (), current_language); |
| |
| if (emit_inferior_call_event (INFERIOR_CALL_PRE, thread, address) < 0) |
| gdbpy_print_stack (); |
| } |
| |
| /* Callback, registered as an observer, that notifies Python listeners |
| when an inferior function call has completed. */ |
| |
| static void |
| python_on_inferior_call_post (ptid_t thread, CORE_ADDR address) |
| { |
| gdbpy_enter enter_py (target_gdbarch (), current_language); |
| |
| if (emit_inferior_call_event (INFERIOR_CALL_POST, thread, address) < 0) |
| gdbpy_print_stack (); |
| } |
| |
| /* Callback, registered as an observer, that notifies Python listeners |
| when a part of memory has been modified by user action (eg via a |
| 'set' command). */ |
| |
| static void |
| python_on_memory_change (struct inferior *inferior, CORE_ADDR addr, ssize_t len, const bfd_byte *data) |
| { |
| gdbpy_enter enter_py (target_gdbarch (), current_language); |
| |
| if (emit_memory_changed_event (addr, len) < 0) |
| gdbpy_print_stack (); |
| } |
| |
| /* Callback, registered as an observer, that notifies Python listeners |
| when a register has been modified by user action (eg via a 'set' |
| command). */ |
| |
| static void |
| python_on_register_change (struct frame_info *frame, int regnum) |
| { |
| gdbpy_enter enter_py (target_gdbarch (), current_language); |
| |
| if (emit_register_changed_event (frame, regnum) < 0) |
| gdbpy_print_stack (); |
| } |
| |
| static void |
| python_inferior_exit (struct inferior *inf) |
| { |
| const LONGEST *exit_code = NULL; |
| |
| if (!gdb_python_initialized) |
| return; |
| |
| gdbpy_enter enter_py (target_gdbarch (), current_language); |
| |
| if (inf->has_exit_code) |
| exit_code = &inf->exit_code; |
| |
| if (emit_exited_event (exit_code, inf) < 0) |
| gdbpy_print_stack (); |
| } |
| |
| /* Callback used to notify Python listeners about new objfiles loaded in the |
| inferior. OBJFILE may be NULL which means that the objfile list has been |
| cleared (emptied). */ |
| |
| static void |
| python_new_objfile (struct objfile *objfile) |
| { |
| if (!gdb_python_initialized) |
| return; |
| |
| gdbpy_enter enter_py (objfile != NULL |
| ? objfile->arch () |
| : target_gdbarch (), |
| current_language); |
| |
| if (objfile == NULL) |
| { |
| if (emit_clear_objfiles_event () < 0) |
| gdbpy_print_stack (); |
| } |
| else |
| { |
| if (emit_new_objfile_event (objfile) < 0) |
| gdbpy_print_stack (); |
| } |
| } |
| |
| /* Return a reference to the Python object of type Inferior |
| representing INFERIOR. If the object has already been created, |
| return it and increment the reference count, otherwise, create it. |
| Return NULL on failure. */ |
| |
| gdbpy_ref<inferior_object> |
| inferior_to_inferior_object (struct inferior *inferior) |
| { |
| inferior_object *inf_obj; |
| |
| inf_obj = (inferior_object *) inferior_data (inferior, infpy_inf_data_key); |
| if (!inf_obj) |
| { |
| inf_obj = PyObject_New (inferior_object, &inferior_object_type); |
| if (!inf_obj) |
| return NULL; |
| |
| inf_obj->inferior = inferior; |
| inf_obj->threads = NULL; |
| inf_obj->nthreads = 0; |
| |
| /* PyObject_New initializes the new object with a refcount of 1. This |
| counts for the reference we are keeping in the inferior data. */ |
| set_inferior_data (inferior, infpy_inf_data_key, inf_obj); |
| } |
| |
| /* We are returning a new reference. */ |
| gdb_assert (inf_obj != nullptr); |
| return gdbpy_ref<inferior_object>::new_reference (inf_obj); |
| } |
| |
| /* Called when a new inferior is created. Notifies any Python event |
| listeners. */ |
| static void |
| python_new_inferior (struct inferior *inf) |
| { |
| if (!gdb_python_initialized) |
| return; |
| |
| gdbpy_enter enter_py (python_gdbarch, python_language); |
| |
| if (evregpy_no_listeners_p (gdb_py_events.new_inferior)) |
| return; |
| |
| gdbpy_ref<inferior_object> inf_obj = inferior_to_inferior_object (inf); |
| if (inf_obj == NULL) |
| { |
| gdbpy_print_stack (); |
| return; |
| } |
| |
| gdbpy_ref<> event = create_event_object (&new_inferior_event_object_type); |
| if (event == NULL |
| || evpy_add_attribute (event.get (), "inferior", |
| (PyObject *) inf_obj.get ()) < 0 |
| || evpy_emit_event (event.get (), gdb_py_events.new_inferior) < 0) |
| gdbpy_print_stack (); |
| } |
| |
| /* Called when an inferior is removed. Notifies any Python event |
| listeners. */ |
| static void |
| python_inferior_deleted (struct inferior *inf) |
| { |
| if (!gdb_python_initialized) |
| return; |
| |
| gdbpy_enter enter_py (python_gdbarch, python_language); |
| |
| if (evregpy_no_listeners_p (gdb_py_events.inferior_deleted)) |
| return; |
| |
| gdbpy_ref<inferior_object> inf_obj = inferior_to_inferior_object (inf); |
| if (inf_obj == NULL) |
| { |
| gdbpy_print_stack (); |
| return; |
| } |
| |
| gdbpy_ref<> event = create_event_object (&inferior_deleted_event_object_type); |
| if (event == NULL |
| || evpy_add_attribute (event.get (), "inferior", |
| (PyObject *) inf_obj.get ()) < 0 |
| || evpy_emit_event (event.get (), gdb_py_events.inferior_deleted) < 0) |
| gdbpy_print_stack (); |
| } |
| |
| gdbpy_ref<> |
| thread_to_thread_object (thread_info *thr) |
| { |
| gdbpy_ref<inferior_object> inf_obj = inferior_to_inferior_object (thr->inf); |
| if (inf_obj == NULL) |
| return NULL; |
| |
| for (threadlist_entry *thread = inf_obj->threads; |
| thread != NULL; |
| thread = thread->next) |
| if (thread->thread_obj->thread == thr) |
| return gdbpy_ref<>::new_reference ((PyObject *) thread->thread_obj.get ()); |
| |
| PyErr_SetString (PyExc_SystemError, |
| _("could not find gdb thread object")); |
| return NULL; |
| } |
| |
| static void |
| add_thread_object (struct thread_info *tp) |
| { |
| inferior_object *inf_obj; |
| struct threadlist_entry *entry; |
| |
| if (!gdb_python_initialized) |
| return; |
| |
| gdbpy_enter enter_py (python_gdbarch, python_language); |
| |
| gdbpy_ref<thread_object> thread_obj = create_thread_object (tp); |
| if (thread_obj == NULL) |
| { |
| gdbpy_print_stack (); |
| return; |
| } |
| |
| inf_obj = (inferior_object *) thread_obj->inf_obj; |
| |
| entry = new threadlist_entry (std::move (thread_obj)); |
| entry->next = inf_obj->threads; |
| |
| inf_obj->threads = entry; |
| inf_obj->nthreads++; |
| |
| if (evregpy_no_listeners_p (gdb_py_events.new_thread)) |
| return; |
| |
| gdbpy_ref<> event = create_thread_event_object (&new_thread_event_object_type, |
| (PyObject *) inf_obj); |
| if (event == NULL |
| || evpy_emit_event (event.get (), gdb_py_events.new_thread) < 0) |
| gdbpy_print_stack (); |
| } |
| |
| static void |
| delete_thread_object (struct thread_info *tp, int ignore) |
| { |
| struct threadlist_entry **entry, *tmp; |
| |
| if (!gdb_python_initialized) |
| return; |
| |
| gdbpy_enter enter_py (python_gdbarch, python_language); |
| |
| gdbpy_ref<inferior_object> inf_obj = inferior_to_inferior_object (tp->inf); |
| if (inf_obj == NULL) |
| return; |
| |
| /* Find thread entry in its inferior's thread_list. */ |
| for (entry = &inf_obj->threads; *entry != NULL; entry = |
| &(*entry)->next) |
| if ((*entry)->thread_obj->thread == tp) |
| break; |
| |
| if (!*entry) |
| return; |
| |
| tmp = *entry; |
| tmp->thread_obj->thread = NULL; |
| |
| *entry = (*entry)->next; |
| inf_obj->nthreads--; |
| |
| delete tmp; |
| } |
| |
| static PyObject * |
| infpy_threads (PyObject *self, PyObject *args) |
| { |
| int i; |
| struct threadlist_entry *entry; |
| inferior_object *inf_obj = (inferior_object *) self; |
| PyObject *tuple; |
| |
| INFPY_REQUIRE_VALID (inf_obj); |
| |
| try |
| { |
| update_thread_list (); |
| } |
| catch (const gdb_exception &except) |
| { |
| GDB_PY_HANDLE_EXCEPTION (except); |
| } |
| |
| tuple = PyTuple_New (inf_obj->nthreads); |
| if (!tuple) |
| return NULL; |
| |
| for (i = 0, entry = inf_obj->threads; i < inf_obj->nthreads; |
| i++, entry = entry->next) |
| { |
| PyObject *thr = (PyObject *) entry->thread_obj.get (); |
| Py_INCREF (thr); |
| PyTuple_SET_ITEM (tuple, i, thr); |
| } |
| |
| return tuple; |
| } |
| |
| static PyObject * |
| infpy_get_num (PyObject *self, void *closure) |
| { |
| inferior_object *inf = (inferior_object *) self; |
| |
| INFPY_REQUIRE_VALID (inf); |
| |
| return gdb_py_object_from_longest (inf->inferior->num).release (); |
| } |
| |
| static PyObject * |
| infpy_get_pid (PyObject *self, void *closure) |
| { |
| inferior_object *inf = (inferior_object *) self; |
| |
| INFPY_REQUIRE_VALID (inf); |
| |
| return gdb_py_object_from_longest (inf->inferior->pid).release (); |
| } |
| |
| static PyObject * |
| infpy_get_was_attached (PyObject *self, void *closure) |
| { |
| inferior_object *inf = (inferior_object *) self; |
| |
| INFPY_REQUIRE_VALID (inf); |
| if (inf->inferior->attach_flag) |
| Py_RETURN_TRUE; |
| Py_RETURN_FALSE; |
| } |
| |
| /* Getter of gdb.Inferior.progspace. */ |
| |
| static PyObject * |
| infpy_get_progspace (PyObject *self, void *closure) |
| { |
| inferior_object *inf = (inferior_object *) self; |
| |
| INFPY_REQUIRE_VALID (inf); |
| |
| program_space *pspace = inf->inferior->pspace; |
| gdb_assert (pspace != nullptr); |
| |
| return pspace_to_pspace_object (pspace).release (); |
| } |
| |
| /* Implementation of gdb.inferiors () -> (gdb.Inferior, ...). |
| Returns a tuple of all inferiors. */ |
| PyObject * |
| gdbpy_inferiors (PyObject *unused, PyObject *unused2) |
| { |
| gdbpy_ref<> list (PyList_New (0)); |
| if (list == NULL) |
| return NULL; |
| |
| for (inferior *inf : all_inferiors ()) |
| { |
| gdbpy_ref<inferior_object> inferior = inferior_to_inferior_object (inf); |
| |
| if (inferior == NULL) |
| continue; |
| |
| if (PyList_Append (list.get (), (PyObject *) inferior.get ()) != 0) |
| return NULL; |
| } |
| |
| return PyList_AsTuple (list.get ()); |
| } |
| |
| /* Membuf and memory manipulation. */ |
| |
| /* Implementation of Inferior.read_memory (address, length). |
| Returns a Python buffer object with LENGTH bytes of the inferior's |
| memory at ADDRESS. Both arguments are integers. Returns NULL on error, |
| with a python exception set. */ |
| static PyObject * |
| infpy_read_memory (PyObject *self, PyObject *args, PyObject *kw) |
| { |
| CORE_ADDR addr, length; |
| gdb::unique_xmalloc_ptr<gdb_byte> buffer; |
| PyObject *addr_obj, *length_obj, *result; |
| static const char *keywords[] = { "address", "length", NULL }; |
| |
| if (!gdb_PyArg_ParseTupleAndKeywords (args, kw, "OO", keywords, |
| &addr_obj, &length_obj)) |
| return NULL; |
| |
| if (get_addr_from_python (addr_obj, &addr) < 0 |
| || get_addr_from_python (length_obj, &length) < 0) |
| return NULL; |
| |
| try |
| { |
| buffer.reset ((gdb_byte *) xmalloc (length)); |
| |
| read_memory (addr, buffer.get (), length); |
| } |
| catch (const gdb_exception &except) |
| { |
| GDB_PY_HANDLE_EXCEPTION (except); |
| } |
| |
| gdbpy_ref<membuf_object> membuf_obj (PyObject_New (membuf_object, |
| &membuf_object_type)); |
| if (membuf_obj == NULL) |
| return NULL; |
| |
| membuf_obj->buffer = buffer.release (); |
| membuf_obj->addr = addr; |
| membuf_obj->length = length; |
| |
| #ifdef IS_PY3K |
| result = PyMemoryView_FromObject ((PyObject *) membuf_obj.get ()); |
| #else |
| result = PyBuffer_FromReadWriteObject ((PyObject *) membuf_obj.get (), 0, |
| Py_END_OF_BUFFER); |
| #endif |
| |
| return result; |
| } |
| |
| /* Implementation of Inferior.write_memory (address, buffer [, length]). |
| Writes the contents of BUFFER (a Python object supporting the read |
| buffer protocol) at ADDRESS in the inferior's memory. Write LENGTH |
| bytes from BUFFER, or its entire contents if the argument is not |
| provided. The function returns nothing. Returns NULL on error, with |
| a python exception set. */ |
| static PyObject * |
| infpy_write_memory (PyObject *self, PyObject *args, PyObject *kw) |
| { |
| struct gdb_exception except; |
| Py_ssize_t buf_len; |
| const gdb_byte *buffer; |
| CORE_ADDR addr, length; |
| PyObject *addr_obj, *length_obj = NULL; |
| static const char *keywords[] = { "address", "buffer", "length", NULL }; |
| Py_buffer pybuf; |
| |
| if (!gdb_PyArg_ParseTupleAndKeywords (args, kw, "Os*|O", keywords, |
| &addr_obj, &pybuf, &length_obj)) |
| return NULL; |
| |
| Py_buffer_up buffer_up (&pybuf); |
| buffer = (const gdb_byte *) pybuf.buf; |
| buf_len = pybuf.len; |
| |
| if (get_addr_from_python (addr_obj, &addr) < 0) |
| return nullptr; |
| |
| if (!length_obj) |
| length = buf_len; |
| else if (get_addr_from_python (length_obj, &length) < 0) |
| return nullptr; |
| |
| try |
| { |
| write_memory_with_notification (addr, buffer, length); |
| } |
| catch (gdb_exception &ex) |
| { |
| except = std::move (ex); |
| } |
| |
| GDB_PY_HANDLE_EXCEPTION (except); |
| |
| Py_RETURN_NONE; |
| } |
| |
| /* Destructor of Membuf objects. */ |
| static void |
| mbpy_dealloc (PyObject *self) |
| { |
| xfree (((membuf_object *) self)->buffer); |
| Py_TYPE (self)->tp_free (self); |
| } |
| |
| /* Return a description of the Membuf object. */ |
| static PyObject * |
| mbpy_str (PyObject *self) |
| { |
| membuf_object *membuf_obj = (membuf_object *) self; |
| |
| return PyString_FromFormat (_("Memory buffer for address %s, \ |
| which is %s bytes long."), |
| paddress (python_gdbarch, membuf_obj->addr), |
| pulongest (membuf_obj->length)); |
| } |
| |
| #ifdef IS_PY3K |
| |
| static int |
| get_buffer (PyObject *self, Py_buffer *buf, int flags) |
| { |
| membuf_object *membuf_obj = (membuf_object *) self; |
| int ret; |
| |
| ret = PyBuffer_FillInfo (buf, self, membuf_obj->buffer, |
| membuf_obj->length, 0, |
| PyBUF_CONTIG); |
| |
| /* Despite the documentation saying this field is a "const char *", |
| in Python 3.4 at least, it's really a "char *". */ |
| buf->format = (char *) "c"; |
| |
| return ret; |
| } |
| |
| #else |
| |
| static Py_ssize_t |
| get_read_buffer (PyObject *self, Py_ssize_t segment, void **ptrptr) |
| { |
| membuf_object *membuf_obj = (membuf_object *) self; |
| |
| if (segment) |
| { |
| PyErr_SetString (PyExc_SystemError, |
| _("The memory buffer supports only one segment.")); |
| return -1; |
| } |
| |
| *ptrptr = membuf_obj->buffer; |
| |
| return membuf_obj->length; |
| } |
| |
| static Py_ssize_t |
| get_write_buffer (PyObject *self, Py_ssize_t segment, void **ptrptr) |
| { |
| return get_read_buffer (self, segment, ptrptr); |
| } |
| |
| static Py_ssize_t |
| get_seg_count (PyObject *self, Py_ssize_t *lenp) |
| { |
| if (lenp) |
| *lenp = ((membuf_object *) self)->length; |
| |
| return 1; |
| } |
| |
| static Py_ssize_t |
| get_char_buffer (PyObject *self, Py_ssize_t segment, char **ptrptr) |
| { |
| void *ptr = NULL; |
| Py_ssize_t ret; |
| |
| ret = get_read_buffer (self, segment, &ptr); |
| *ptrptr = (char *) ptr; |
| |
| return ret; |
| } |
| |
| #endif /* IS_PY3K */ |
| |
| /* Implementation of |
| gdb.search_memory (address, length, pattern). ADDRESS is the |
| address to start the search. LENGTH specifies the scope of the |
| search from ADDRESS. PATTERN is the pattern to search for (and |
| must be a Python object supporting the buffer protocol). |
| Returns a Python Long object holding the address where the pattern |
| was located, or if the pattern was not found, returns None. Returns NULL |
| on error, with a python exception set. */ |
| static PyObject * |
| infpy_search_memory (PyObject *self, PyObject *args, PyObject *kw) |
| { |
| struct gdb_exception except; |
| CORE_ADDR start_addr, length; |
| static const char *keywords[] = { "address", "length", "pattern", NULL }; |
| PyObject *start_addr_obj, *length_obj; |
| Py_ssize_t pattern_size; |
| const gdb_byte *buffer; |
| CORE_ADDR found_addr; |
| int found = 0; |
| Py_buffer pybuf; |
| |
| if (!gdb_PyArg_ParseTupleAndKeywords (args, kw, "OOs*", keywords, |
| &start_addr_obj, &length_obj, |
| &pybuf)) |
| return NULL; |
| |
| Py_buffer_up buffer_up (&pybuf); |
| buffer = (const gdb_byte *) pybuf.buf; |
| pattern_size = pybuf.len; |
| |
| if (get_addr_from_python (start_addr_obj, &start_addr) < 0) |
| return nullptr; |
| |
| if (get_addr_from_python (length_obj, &length) < 0) |
| return nullptr; |
| |
| if (!length) |
| { |
| PyErr_SetString (PyExc_ValueError, |
| _("Search range is empty.")); |
| return nullptr; |
| } |
| /* Watch for overflows. */ |
| else if (length > CORE_ADDR_MAX |
| || (start_addr + length - 1) < start_addr) |
| { |
| PyErr_SetString (PyExc_ValueError, |
| _("The search range is too large.")); |
| return nullptr; |
| } |
| |
| try |
| { |
| found = target_search_memory (start_addr, length, |
| buffer, pattern_size, |
| &found_addr); |
| } |
| catch (gdb_exception &ex) |
| { |
| except = std::move (ex); |
| } |
| |
| GDB_PY_HANDLE_EXCEPTION (except); |
| |
| if (found) |
| return gdb_py_object_from_ulongest (found_addr).release (); |
| else |
| Py_RETURN_NONE; |
| } |
| |
| /* Implementation of gdb.Inferior.is_valid (self) -> Boolean. |
| Returns True if this inferior object still exists in GDB. */ |
| |
| static PyObject * |
| infpy_is_valid (PyObject *self, PyObject *args) |
| { |
| inferior_object *inf = (inferior_object *) self; |
| |
| if (! inf->inferior) |
| Py_RETURN_FALSE; |
| |
| Py_RETURN_TRUE; |
| } |
| |
| /* Implementation of gdb.Inferior.thread_from_handle (self, handle) |
| -> gdb.InferiorThread. */ |
| |
| static PyObject * |
| infpy_thread_from_thread_handle (PyObject *self, PyObject *args, PyObject *kw) |
| { |
| PyObject *handle_obj; |
| inferior_object *inf_obj = (inferior_object *) self; |
| static const char *keywords[] = { "handle", NULL }; |
| |
| INFPY_REQUIRE_VALID (inf_obj); |
| |
| if (! gdb_PyArg_ParseTupleAndKeywords (args, kw, "O", keywords, &handle_obj)) |
| return NULL; |
| |
| const gdb_byte *bytes; |
| size_t bytes_len; |
| Py_buffer_up buffer_up; |
| Py_buffer py_buf; |
| |
| if (PyObject_CheckBuffer (handle_obj) |
| && PyObject_GetBuffer (handle_obj, &py_buf, PyBUF_SIMPLE) == 0) |
| { |
| buffer_up.reset (&py_buf); |
| bytes = (const gdb_byte *) py_buf.buf; |
| bytes_len = py_buf.len; |
| } |
| else if (gdbpy_is_value_object (handle_obj)) |
| { |
| struct value *val = value_object_to_value (handle_obj); |
| bytes = value_contents_all (val); |
| bytes_len = TYPE_LENGTH (value_type (val)); |
| } |
| else |
| { |
| PyErr_SetString (PyExc_TypeError, |
| _("Argument 'handle' must be a thread handle object.")); |
| |
| return NULL; |
| } |
| |
| try |
| { |
| struct thread_info *thread_info; |
| |
| thread_info = find_thread_by_handle |
| (gdb::array_view<const gdb_byte> (bytes, bytes_len), |
| inf_obj->inferior); |
| if (thread_info != NULL) |
| return thread_to_thread_object (thread_info).release (); |
| } |
| catch (const gdb_exception &except) |
| { |
| GDB_PY_HANDLE_EXCEPTION (except); |
| } |
| |
| Py_RETURN_NONE; |
| } |
| |
| /* Implementation of gdb.Inferior.architecture. */ |
| |
| static PyObject * |
| infpy_architecture (PyObject *self, PyObject *args) |
| { |
| inferior_object *inf = (inferior_object *) self; |
| |
| INFPY_REQUIRE_VALID (inf); |
| |
| return gdbarch_to_arch_object (inf->inferior->gdbarch); |
| } |
| |
| /* Implement repr() for gdb.Inferior. */ |
| |
| static PyObject * |
| infpy_repr (PyObject *obj) |
| { |
| inferior_object *self = (inferior_object *) obj; |
| inferior *inf = self->inferior; |
| |
| if (inf == nullptr) |
| return PyString_FromString ("<gdb.Inferior (invalid)>"); |
| |
| return PyString_FromFormat ("<gdb.Inferior num=%d, pid=%d>", |
| inf->num, inf->pid); |
| } |
| |
| |
| static void |
| infpy_dealloc (PyObject *obj) |
| { |
| inferior_object *inf_obj = (inferior_object *) obj; |
| struct inferior *inf = inf_obj->inferior; |
| |
| if (! inf) |
| return; |
| |
| set_inferior_data (inf, infpy_inf_data_key, NULL); |
| Py_TYPE (obj)->tp_free (obj); |
| } |
| |
| /* Clear the INFERIOR pointer in an Inferior object and clear the |
| thread list. */ |
| static void |
| py_free_inferior (struct inferior *inf, void *datum) |
| { |
| struct threadlist_entry *th_entry, *th_tmp; |
| |
| if (!gdb_python_initialized) |
| return; |
| |
| gdbpy_enter enter_py (python_gdbarch, python_language); |
| gdbpy_ref<inferior_object> inf_obj ((inferior_object *) datum); |
| |
| inf_obj->inferior = NULL; |
| |
| /* Deallocate threads list. */ |
| for (th_entry = inf_obj->threads; th_entry != NULL;) |
| { |
| th_tmp = th_entry; |
| th_entry = th_entry->next; |
| delete th_tmp; |
| } |
| |
| inf_obj->nthreads = 0; |
| } |
| |
| /* Implementation of gdb.selected_inferior() -> gdb.Inferior. |
| Returns the current inferior object. */ |
| |
| PyObject * |
| gdbpy_selected_inferior (PyObject *self, PyObject *args) |
| { |
| return ((PyObject *) |
| inferior_to_inferior_object (current_inferior ()).release ()); |
| } |
| |
| int |
| gdbpy_initialize_inferior (void) |
| { |
| if (PyType_Ready (&inferior_object_type) < 0) |
| return -1; |
| |
| if (gdb_pymodule_addobject (gdb_module, "Inferior", |
| (PyObject *) &inferior_object_type) < 0) |
| return -1; |
| |
| infpy_inf_data_key = |
| register_inferior_data_with_cleanup (NULL, py_free_inferior); |
| |
| gdb::observers::new_thread.attach (add_thread_object); |
| gdb::observers::thread_exit.attach (delete_thread_object); |
| gdb::observers::normal_stop.attach (python_on_normal_stop); |
| gdb::observers::target_resumed.attach (python_on_resume); |
| gdb::observers::inferior_call_pre.attach (python_on_inferior_call_pre); |
| gdb::observers::inferior_call_post.attach (python_on_inferior_call_post); |
| gdb::observers::memory_changed.attach (python_on_memory_change); |
| gdb::observers::register_changed.attach (python_on_register_change); |
| gdb::observers::inferior_exit.attach (python_inferior_exit); |
| gdb::observers::new_objfile.attach (python_new_objfile); |
| gdb::observers::inferior_added.attach (python_new_inferior); |
| gdb::observers::inferior_removed.attach (python_inferior_deleted); |
| |
| membuf_object_type.tp_new = PyType_GenericNew; |
| if (PyType_Ready (&membuf_object_type) < 0) |
| return -1; |
| |
| return gdb_pymodule_addobject (gdb_module, "Membuf", |
| (PyObject *) &membuf_object_type); |
| } |
| |
| static gdb_PyGetSetDef inferior_object_getset[] = |
| { |
| { "num", infpy_get_num, NULL, "ID of inferior, as assigned by GDB.", NULL }, |
| { "pid", infpy_get_pid, NULL, "PID of inferior, as assigned by the OS.", |
| NULL }, |
| { "was_attached", infpy_get_was_attached, NULL, |
| "True if the inferior was created using 'attach'.", NULL }, |
| { "progspace", infpy_get_progspace, NULL, "Program space of this inferior" }, |
| { NULL } |
| }; |
| |
| static PyMethodDef inferior_object_methods[] = |
| { |
| { "is_valid", infpy_is_valid, METH_NOARGS, |
| "is_valid () -> Boolean.\n\ |
| Return true if this inferior is valid, false if not." }, |
| { "threads", infpy_threads, METH_NOARGS, |
| "Return all the threads of this inferior." }, |
| { "read_memory", (PyCFunction) infpy_read_memory, |
| METH_VARARGS | METH_KEYWORDS, |
| "read_memory (address, length) -> buffer\n\ |
| Return a buffer object for reading from the inferior's memory." }, |
| { "write_memory", (PyCFunction) infpy_write_memory, |
| METH_VARARGS | METH_KEYWORDS, |
| "write_memory (address, buffer [, length])\n\ |
| Write the given buffer object to the inferior's memory." }, |
| { "search_memory", (PyCFunction) infpy_search_memory, |
| METH_VARARGS | METH_KEYWORDS, |
| "search_memory (address, length, pattern) -> long\n\ |
| Return a long with the address of a match, or None." }, |
| /* thread_from_thread_handle is deprecated. */ |
| { "thread_from_thread_handle", (PyCFunction) infpy_thread_from_thread_handle, |
| METH_VARARGS | METH_KEYWORDS, |
| "thread_from_thread_handle (handle) -> gdb.InferiorThread.\n\ |
| Return thread object corresponding to thread handle.\n\ |
| This method is deprecated - use thread_from_handle instead." }, |
| { "thread_from_handle", (PyCFunction) infpy_thread_from_thread_handle, |
| METH_VARARGS | METH_KEYWORDS, |
| "thread_from_handle (handle) -> gdb.InferiorThread.\n\ |
| Return thread object corresponding to thread handle." }, |
| { "architecture", (PyCFunction) infpy_architecture, METH_NOARGS, |
| "architecture () -> gdb.Architecture\n\ |
| Return architecture of this inferior." }, |
| { NULL } |
| }; |
| |
| PyTypeObject inferior_object_type = |
| { |
| PyVarObject_HEAD_INIT (NULL, 0) |
| "gdb.Inferior", /* tp_name */ |
| sizeof (inferior_object), /* tp_basicsize */ |
| 0, /* tp_itemsize */ |
| infpy_dealloc, /* tp_dealloc */ |
| 0, /* tp_print */ |
| 0, /* tp_getattr */ |
| 0, /* tp_setattr */ |
| 0, /* tp_compare */ |
| infpy_repr, /* 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 inferior object", /* tp_doc */ |
| 0, /* tp_traverse */ |
| 0, /* tp_clear */ |
| 0, /* tp_richcompare */ |
| 0, /* tp_weaklistoffset */ |
| 0, /* tp_iter */ |
| 0, /* tp_iternext */ |
| inferior_object_methods, /* tp_methods */ |
| 0, /* tp_members */ |
| inferior_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 */ |
| }; |
| |
| #ifdef IS_PY3K |
| |
| static PyBufferProcs buffer_procs = |
| { |
| get_buffer |
| }; |
| |
| #else |
| |
| static PyBufferProcs buffer_procs = { |
| get_read_buffer, |
| get_write_buffer, |
| get_seg_count, |
| get_char_buffer |
| }; |
| #endif /* IS_PY3K */ |
| |
| PyTypeObject membuf_object_type = { |
| PyVarObject_HEAD_INIT (NULL, 0) |
| "gdb.Membuf", /*tp_name*/ |
| sizeof (membuf_object), /*tp_basicsize*/ |
| 0, /*tp_itemsize*/ |
| mbpy_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*/ |
| mbpy_str, /*tp_str*/ |
| 0, /*tp_getattro*/ |
| 0, /*tp_setattro*/ |
| &buffer_procs, /*tp_as_buffer*/ |
| Py_TPFLAGS_DEFAULT, /*tp_flags*/ |
| "GDB memory buffer 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 */ |
| 0, /* tp_dictoffset */ |
| 0, /* tp_init */ |
| 0, /* tp_alloc */ |
| }; |