164 lines
4.6 KiB
C
164 lines
4.6 KiB
C
/* Python interface to inferior function events.
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Copyright (C) 2013-2020 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "py-event.h"
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/* Construct either a gdb.InferiorCallPreEvent or a
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gdb.InferiorCallPostEvent. */
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static gdbpy_ref<>
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create_inferior_call_event_object (inferior_call_kind flag, ptid_t ptid,
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CORE_ADDR addr)
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{
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gdbpy_ref<> event;
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switch (flag)
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{
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case INFERIOR_CALL_PRE:
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event = create_event_object (&inferior_call_pre_event_object_type);
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break;
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case INFERIOR_CALL_POST:
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event = create_event_object (&inferior_call_post_event_object_type);
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break;
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default:
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gdb_assert_not_reached ("invalid inferior_call_kind");
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}
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gdbpy_ref<> ptid_obj (gdbpy_create_ptid_object (ptid));
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if (ptid_obj == NULL)
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return NULL;
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if (evpy_add_attribute (event.get (), "ptid", ptid_obj.get ()) < 0)
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return NULL;
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gdbpy_ref<> addr_obj (PyLong_FromLongLong (addr));
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if (addr_obj == NULL)
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return NULL;
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if (evpy_add_attribute (event.get (), "address", addr_obj.get ()) < 0)
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return NULL;
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return event;
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}
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/* Construct a gdb.RegisterChangedEvent containing the affected
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register number. */
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static gdbpy_ref<>
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create_register_changed_event_object (struct frame_info *frame,
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int regnum)
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{
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gdbpy_ref<> event = create_event_object (®ister_changed_event_object_type);
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if (event == NULL)
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return NULL;
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gdbpy_ref<> frame_obj (frame_info_to_frame_object (frame));
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if (frame_obj == NULL)
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return NULL;
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if (evpy_add_attribute (event.get (), "frame", frame_obj.get ()) < 0)
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return NULL;
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gdbpy_ref<> regnum_obj (PyLong_FromLongLong (regnum));
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if (regnum_obj == NULL)
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return NULL;
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if (evpy_add_attribute (event.get (), "regnum", regnum_obj.get ()) < 0)
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return NULL;
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return event;
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}
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/* Construct a gdb.MemoryChangedEvent describing the extent of the
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affected memory. */
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static gdbpy_ref<>
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create_memory_changed_event_object (CORE_ADDR addr, ssize_t len)
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{
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gdbpy_ref<> event = create_event_object (&memory_changed_event_object_type);
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if (event == NULL)
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return NULL;
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gdbpy_ref<> addr_obj (PyLong_FromLongLong (addr));
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if (addr_obj == NULL)
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return NULL;
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if (evpy_add_attribute (event.get (), "address", addr_obj.get ()) < 0)
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return NULL;
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gdbpy_ref<> len_obj (PyLong_FromLong (len));
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if (len_obj == NULL)
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return NULL;
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if (evpy_add_attribute (event.get (), "length", len_obj.get ()) < 0)
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return NULL;
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return event;
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}
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/* Callback function which notifies observers when an event occurs which
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calls a function in the inferior.
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This function will create a new Python inferior-call event object.
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Return -1 if emit fails. */
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int
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emit_inferior_call_event (inferior_call_kind flag, ptid_t thread,
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CORE_ADDR addr)
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{
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if (evregpy_no_listeners_p (gdb_py_events.inferior_call))
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return 0;
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gdbpy_ref<> event = create_inferior_call_event_object (flag, thread, addr);
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if (event != NULL)
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return evpy_emit_event (event.get (), gdb_py_events.inferior_call);
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return -1;
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}
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/* Callback when memory is modified by the user. This function will
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create a new Python memory changed event object. */
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int
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emit_memory_changed_event (CORE_ADDR addr, ssize_t len)
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{
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if (evregpy_no_listeners_p (gdb_py_events.memory_changed))
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return 0;
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gdbpy_ref<> event = create_memory_changed_event_object (addr, len);
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if (event != NULL)
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return evpy_emit_event (event.get (), gdb_py_events.memory_changed);
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return -1;
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}
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/* Callback when a register is modified by the user. This function
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will create a new Python register changed event object. */
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int
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emit_register_changed_event (struct frame_info* frame, int regnum)
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{
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if (evregpy_no_listeners_p (gdb_py_events.register_changed))
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return 0;
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gdbpy_ref<> event = create_register_changed_event_object (frame, regnum);
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if (event != NULL)
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return evpy_emit_event (event.get (), gdb_py_events.register_changed);
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return -1;
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}
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