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152 lines
4.8 KiB
C++
152 lines
4.8 KiB
C++
/* Target waitstatus definitions and prototypes.
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Copyright (C) 1990-2020 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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#ifndef TARGET_WAITSTATUS_H
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#define TARGET_WAITSTATUS_H
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#include "gdbsupport/gdb_signals.h"
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/* Stuff for target_wait. */
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/* Generally, what has the program done? */
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enum target_waitkind
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{
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/* The program has exited. The exit status is in value.integer. */
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TARGET_WAITKIND_EXITED,
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/* The program has stopped with a signal. Which signal is in
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value.sig. */
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TARGET_WAITKIND_STOPPED,
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/* The program has terminated with a signal. Which signal is in
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value.sig. */
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TARGET_WAITKIND_SIGNALLED,
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/* The program is letting us know that it dynamically loaded
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something (e.g. it called load(2) on AIX). */
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TARGET_WAITKIND_LOADED,
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/* The program has forked. A "related" process' PTID is in
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value.related_pid. I.e., if the child forks, value.related_pid
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is the parent's ID. */
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TARGET_WAITKIND_FORKED,
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/* The program has vforked. A "related" process's PTID is in
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value.related_pid. */
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TARGET_WAITKIND_VFORKED,
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/* The program has exec'ed a new executable file. The new file's
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pathname is pointed to by value.execd_pathname. */
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TARGET_WAITKIND_EXECD,
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/* The program had previously vforked, and now the child is done
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with the shared memory region, because it exec'ed or exited.
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Note that the event is reported to the vfork parent. This is
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only used if GDB did not stay attached to the vfork child,
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otherwise, a TARGET_WAITKIND_EXECD or
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TARGET_WAITKIND_EXIT|SIGNALLED event associated with the child
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has the same effect. */
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TARGET_WAITKIND_VFORK_DONE,
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/* The program has entered or returned from a system call. On
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HP-UX, this is used in the hardware watchpoint implementation.
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The syscall's unique integer ID number is in
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value.syscall_id. */
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TARGET_WAITKIND_SYSCALL_ENTRY,
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TARGET_WAITKIND_SYSCALL_RETURN,
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/* Nothing happened, but we stopped anyway. This perhaps should
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be handled within target_wait, but I'm not sure target_wait
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should be resuming the inferior. */
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TARGET_WAITKIND_SPURIOUS,
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/* An event has occured, but we should wait again.
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Remote_async_wait() returns this when there is an event
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on the inferior, but the rest of the world is not interested in
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it. The inferior has not stopped, but has just sent some output
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to the console, for instance. In this case, we want to go back
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to the event loop and wait there for another event from the
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inferior, rather than being stuck in the remote_async_wait()
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function. This way the event loop is responsive to other events,
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like for instance the user typing. */
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TARGET_WAITKIND_IGNORE,
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/* The target has run out of history information,
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and cannot run backward any further. */
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TARGET_WAITKIND_NO_HISTORY,
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/* There are no resumed children left in the program. */
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TARGET_WAITKIND_NO_RESUMED,
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/* The thread was created. */
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TARGET_WAITKIND_THREAD_CREATED,
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/* The thread has exited. The exit status is in value.integer. */
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TARGET_WAITKIND_THREAD_EXITED,
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};
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struct target_waitstatus
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{
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enum target_waitkind kind;
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/* Additional information about the event. */
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union
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{
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/* Exit status */
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int integer;
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/* Signal number */
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enum gdb_signal sig;
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/* Forked child pid */
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ptid_t related_pid;
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/* execd pathname */
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char *execd_pathname;
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/* Syscall number */
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int syscall_number;
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} value;
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};
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/* Extended reasons that can explain why a target/thread stopped for a
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trap signal. */
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enum target_stop_reason
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{
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/* Either not stopped, or stopped for a reason that doesn't require
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special tracking. */
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TARGET_STOPPED_BY_NO_REASON,
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/* Stopped by a software breakpoint. */
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TARGET_STOPPED_BY_SW_BREAKPOINT,
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/* Stopped by a hardware breakpoint. */
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TARGET_STOPPED_BY_HW_BREAKPOINT,
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/* Stopped by a watchpoint. */
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TARGET_STOPPED_BY_WATCHPOINT,
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/* Stopped by a single step finishing. */
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TARGET_STOPPED_BY_SINGLE_STEP
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};
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/* Prototypes */
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/* Return a pretty printed form of target_waitstatus. */
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std::string target_waitstatus_to_string (const struct target_waitstatus *);
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#endif /* TARGET_WAITSTATUS_H */
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