236 lines
9.0 KiB
C++
236 lines
9.0 KiB
C++
/* Observers
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Copyright (C) 2016-2018 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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#if !defined (GDB_OBSERVER_H)
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#define GDB_OBSERVER_H
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#include "common/observable.h"
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struct bpstats;
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struct so_list;
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struct objfile;
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struct thread_info;
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struct inferior;
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struct trace_state_variable;
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namespace gdb
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{
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namespace observers
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{
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/* The inferior has stopped for real. The bs argument describes the
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breakpoints were are stopped at, if any. Second argument
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print_frame non-zero means display the location where the
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inferior has stopped.
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gdb notifies all normal_stop observers when the inferior execution
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has just stopped, the associated messages and annotations have been
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printed, and the control is about to be returned to the user.
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Note that the normal_stop notification is not emitted when the
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execution stops due to a breakpoint, and this breakpoint has a
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condition that is not met. If the breakpoint has any associated
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commands list, the commands are executed after the notification is
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emitted. */
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extern observable<struct bpstats *, int> normal_stop;
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/* The inferior was stopped by a signal. */
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extern observable<enum gdb_signal> signal_received;
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/* We are done with a step/next/si/ni command. */
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extern observable<> end_stepping_range;
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/* The inferior was terminated by a signal. */
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extern observable<enum gdb_signal> signal_exited;
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/* The inferior program is finished. */
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extern observable<int> exited;
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/* Reverse execution: target ran out of history info. */
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extern observable<> no_history;
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/* A synchronous command finished. */
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extern observable<> sync_execution_done;
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/* An error was caught while executing a command. */
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extern observable<> command_error;
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/* The target's register contents have changed. */
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extern observable<struct target_ops *> target_changed;
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/* The executable being debugged by GDB has changed: The user
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decided to debug a different program, or the program he was
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debugging has been modified since being loaded by the debugger
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(by being recompiled, for instance). */
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extern observable<> executable_changed;
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/* gdb has just connected to an inferior. For 'run', gdb calls this
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observer while the inferior is still stopped at the entry-point
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instruction. For 'attach' and 'core', gdb calls this observer
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immediately after connecting to the inferior, and before any
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information on the inferior has been printed. */
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extern observable<struct target_ops *, int> inferior_created;
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/* The status of process record for inferior inferior in gdb has
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changed. The process record is started if started is true, and
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the process record is stopped if started is false.
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When started is true, method indicates the short name of the
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method used for recording. If the method supports multiple
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formats, format indicates which one is being used, otherwise it
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is NULL. When started is false, they are both NULL. */
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extern observable<struct inferior *, int, const char *, const char *>
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record_changed;
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/* The shared library specified by solib has been loaded. Note that
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when gdb calls this observer, the library's symbols probably
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haven't been loaded yet. */
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extern observable<struct so_list *> solib_loaded;
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/* The shared library specified by solib has been unloaded. Note
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that when gdb calls this observer, the library's symbols have not
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been unloaded yet, and thus are still available. */
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extern observable<struct so_list *> solib_unloaded;
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/* The symbol file specified by objfile has been loaded. Called
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with objfile equal to NULL to indicate previously loaded symbol
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table data has now been invalidated. */
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extern observable<struct objfile *> new_objfile;
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/* The object file specified by objfile is about to be freed. */
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extern observable<struct objfile *> free_objfile;
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/* The thread specified by t has been created. */
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extern observable<struct thread_info *> new_thread;
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/* The thread specified by t has exited. The silent argument
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indicates that gdb is removing the thread from its tables without
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wanting to notify the user about it. */
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extern observable<struct thread_info *, int> thread_exit;
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/* An explicit stop request was issued to ptid. If ptid equals
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minus_one_ptid, the request applied to all threads. If
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ptid_is_pid(ptid) returns true, the request applied to all
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threads of the process pointed at by ptid. Otherwise, the
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request applied to the single thread pointed at by ptid. */
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extern observable<ptid_t> thread_stop_requested;
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/* The target was resumed. The ptid parameter specifies which
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thread was resume, and may be RESUME_ALL if all threads are
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resumed. */
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extern observable<ptid_t> target_resumed;
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/* The target is about to be proceeded. */
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extern observable<> about_to_proceed;
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/* A new breakpoint b has been created. */
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extern observable<struct breakpoint *> breakpoint_created;
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/* A breakpoint has been destroyed. The argument b is the
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pointer to the destroyed breakpoint. */
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extern observable<struct breakpoint *> breakpoint_deleted;
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/* A breakpoint has been modified in some way. The argument b
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is the modified breakpoint. */
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extern observable<struct breakpoint *> breakpoint_modified;
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/* The trace frame is changed to tfnum (e.g., by using the 'tfind'
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command). If tfnum is negative, it means gdb resumes live
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debugging. The number of the tracepoint associated with this
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traceframe is tpnum. */
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extern observable<int, int> traceframe_changed;
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/* The current architecture has changed. The argument newarch is a
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pointer to the new architecture. */
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extern observable<struct gdbarch *> architecture_changed;
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/* The thread's ptid has changed. The old_ptid parameter specifies
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the old value, and new_ptid specifies the new value. */
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extern observable<ptid_t, ptid_t> thread_ptid_changed;
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/* The inferior inf has been added to the list of inferiors. At
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this point, it might not be associated with any process. */
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extern observable<struct inferior *> inferior_added;
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/* The inferior identified by inf has been attached to a
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process. */
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extern observable<struct inferior *> inferior_appeared;
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/* Either the inferior associated with inf has been detached from
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the process, or the process has exited. */
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extern observable<struct inferior *> inferior_exit;
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/* The inferior inf has been removed from the list of inferiors.
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This method is called immediately before freeing inf. */
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extern observable<struct inferior *> inferior_removed;
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/* Bytes from data to data + len have been written to the inferior
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at addr. */
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extern observable<struct inferior *, CORE_ADDR, ssize_t, const bfd_byte *>
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memory_changed;
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/* Called before a top-level prompt is displayed. current_prompt is
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the current top-level prompt. */
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extern observable<const char *> before_prompt;
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/* Variable gdb_datadir has been set. The value may not necessarily
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change. */
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extern observable<> gdb_datadir_changed;
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/* The parameter of some 'set' commands in console are changed.
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This method is called after a command 'set param value'. param
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is the parameter of 'set' command, and value is the value of
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changed parameter. */
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extern observable<const char *, const char *> command_param_changed;
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/* The new trace state variable tsv is created. */
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extern observable<const struct trace_state_variable *> tsv_created;
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/* The trace state variable tsv is deleted. If tsv is NULL, all
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trace state variables are deleted. */
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extern observable<const struct trace_state_variable *> tsv_deleted;
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/* The trace state value tsv is modified. */
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extern observable<const struct trace_state_variable *> tsv_modified;
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/* An inferior function at address is about to be called in thread
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thread. */
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extern observable<ptid_t, CORE_ADDR> inferior_call_pre;
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/* The inferior function at address has just been called. This
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observer is called even if the inferior exits during the call.
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thread is the thread in which the function was called, which may
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be different from the current thread. */
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extern observable<ptid_t, CORE_ADDR> inferior_call_post;
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/* A register in the inferior has been modified by the gdb user. */
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extern observable<struct frame_info *, int> register_changed;
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/* The user-selected inferior, thread and/or frame has changed. The
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user_select_what flag specifies if the inferior, thread and/or
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frame has changed. */
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extern observable<user_selected_what> user_selected_context_changed;
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} /* namespace observers */
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} /* namespace gdb */
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#endif /* GDB_OBSERVER_H */
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