/* Target waitstatus definitions and prototypes.
- Copyright (C) 1990-2019 Free Software Foundation, Inc.
+ Copyright (C) 1990-2022 Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
-#ifndef WAITSTATUS_H
-#define WAITSTATUS_H
+#ifndef TARGET_WAITSTATUS_H
+#define TARGET_WAITSTATUS_H
-#include "gdb_signals.h"
+#include "diagnostics.h"
+#include "gdbsupport/gdb_signals.h"
/* Stuff for target_wait. */
TARGET_WAITKIND_THREAD_EXITED,
};
+/* Return KIND as a string. */
+
+static inline const char *
+target_waitkind_str (target_waitkind kind)
+{
+/* Make sure the compiler warns if a new TARGET_WAITKIND enumerator is added
+ but not handled here. */
+DIAGNOSTIC_PUSH
+DIAGNOSTIC_ERROR_SWITCH
+ switch (kind)
+ {
+ case TARGET_WAITKIND_EXITED:
+ return "EXITED";
+ case TARGET_WAITKIND_STOPPED:
+ return "STOPPED";
+ case TARGET_WAITKIND_SIGNALLED:
+ return "SIGNALLED";
+ case TARGET_WAITKIND_LOADED:
+ return "LOADED";
+ case TARGET_WAITKIND_FORKED:
+ return "FORKED";
+ case TARGET_WAITKIND_VFORKED:
+ return "VFORKED";
+ case TARGET_WAITKIND_EXECD:
+ return "EXECD";
+ case TARGET_WAITKIND_VFORK_DONE:
+ return "VFORK_DONE";
+ case TARGET_WAITKIND_SYSCALL_ENTRY:
+ return "SYSCALL_ENTRY";
+ case TARGET_WAITKIND_SYSCALL_RETURN:
+ return "SYSCALL_RETURN";
+ case TARGET_WAITKIND_SPURIOUS:
+ return "SPURIOUS";
+ case TARGET_WAITKIND_IGNORE:
+ return "IGNORE";
+ case TARGET_WAITKIND_NO_HISTORY:
+ return "NO_HISTORY";
+ case TARGET_WAITKIND_NO_RESUMED:
+ return "NO_RESUMED";
+ case TARGET_WAITKIND_THREAD_CREATED:
+ return "THREAD_CREATED";
+ case TARGET_WAITKIND_THREAD_EXITED:
+ return "THREAD_EXITED";
+ };
+DIAGNOSTIC_POP
+
+ gdb_assert_not_reached ("invalid target_waitkind value: %d\n", (int) kind);
+}
+
struct target_waitstatus
{
- enum target_waitkind kind;
+ /* Default constructor. */
+ target_waitstatus () = default;
+
+ /* Copy constructor. */
+
+ target_waitstatus (const target_waitstatus &other)
+ {
+ m_kind = other.m_kind;
+ m_value = other.m_value;
+
+ if (m_kind == TARGET_WAITKIND_EXECD)
+ m_value.execd_pathname = xstrdup (m_value.execd_pathname);
+ }
+
+ /* Move constructor. */
+
+ target_waitstatus (target_waitstatus &&other)
+ {
+ m_kind = other.m_kind;
+ m_value = other.m_value;
+
+ if (m_kind == TARGET_WAITKIND_EXECD)
+ other.m_value.execd_pathname = nullptr;
+
+ other.reset ();
+ }
+
+ /* Copy assignment operator. */
+
+ target_waitstatus &operator= (const target_waitstatus &rhs)
+ {
+ this->reset ();
+ m_kind = rhs.m_kind;
+ m_value = rhs.m_value;
+
+ if (m_kind == TARGET_WAITKIND_EXECD)
+ m_value.execd_pathname = xstrdup (m_value.execd_pathname);
+
+ return *this;
+ }
+
+ /* Move assignment operator. */
+
+ target_waitstatus &operator= (target_waitstatus &&rhs)
+ {
+ this->reset ();
+ m_kind = rhs.m_kind;
+ m_value = rhs.m_value;
+
+ if (m_kind == TARGET_WAITKIND_EXECD)
+ rhs.m_value.execd_pathname = nullptr;
+
+ rhs.reset ();
+
+ return *this;
+ }
+
+ /* Destructor. */
+
+ ~target_waitstatus ()
+ {
+ this->reset ();
+ }
+
+ /* Setters: set the wait status kind plus any associated data. */
+
+ target_waitstatus &set_exited (int exit_status)
+ {
+ this->reset ();
+ m_kind = TARGET_WAITKIND_EXITED;
+ m_value.exit_status = exit_status;
+ return *this;
+ }
+
+ target_waitstatus &set_stopped (gdb_signal sig)
+ {
+ this->reset ();
+ m_kind = TARGET_WAITKIND_STOPPED;
+ m_value.sig = sig;
+ return *this;
+ }
+
+ target_waitstatus &set_signalled (gdb_signal sig)
+ {
+ this->reset ();
+ m_kind = TARGET_WAITKIND_SIGNALLED;
+ m_value.sig = sig;
+ return *this;
+ }
+
+ target_waitstatus &set_loaded ()
+ {
+ this->reset ();
+ m_kind = TARGET_WAITKIND_LOADED;
+ return *this;
+ }
+
+ target_waitstatus &set_forked (ptid_t child_ptid)
+ {
+ this->reset ();
+ m_kind = TARGET_WAITKIND_FORKED;
+ m_value.child_ptid = child_ptid;
+ return *this;
+ }
+
+ target_waitstatus &set_vforked (ptid_t child_ptid)
+ {
+ this->reset ();
+ m_kind = TARGET_WAITKIND_VFORKED;
+ m_value.child_ptid = child_ptid;
+ return *this;
+ }
+
+ target_waitstatus &set_execd (gdb::unique_xmalloc_ptr<char> execd_pathname)
+ {
+ this->reset ();
+ m_kind = TARGET_WAITKIND_EXECD;
+ m_value.execd_pathname = execd_pathname.release ();
+ return *this;
+ }
+
+ target_waitstatus &set_vfork_done ()
+ {
+ this->reset ();
+ m_kind = TARGET_WAITKIND_VFORK_DONE;
+ return *this;
+ }
+
+ target_waitstatus &set_syscall_entry (int syscall_number)
+ {
+ this->reset ();
+ m_kind = TARGET_WAITKIND_SYSCALL_ENTRY;
+ m_value.syscall_number = syscall_number;
+ return *this;
+ }
+
+ target_waitstatus &set_syscall_return (int syscall_number)
+ {
+ this->reset ();
+ m_kind = TARGET_WAITKIND_SYSCALL_RETURN;
+ m_value.syscall_number = syscall_number;
+ return *this;
+ }
+
+ target_waitstatus &set_spurious ()
+ {
+ this->reset ();
+ m_kind = TARGET_WAITKIND_SPURIOUS;
+ return *this;
+ }
+
+ target_waitstatus &set_ignore ()
+ {
+ this->reset ();
+ m_kind = TARGET_WAITKIND_IGNORE;
+ return *this;
+ }
+
+ target_waitstatus &set_no_history ()
+ {
+ this->reset ();
+ m_kind = TARGET_WAITKIND_NO_HISTORY;
+ return *this;
+ }
+
+ target_waitstatus &set_no_resumed ()
+ {
+ this->reset ();
+ m_kind = TARGET_WAITKIND_NO_RESUMED;
+ return *this;
+ }
+
+ target_waitstatus &set_thread_created ()
+ {
+ this->reset ();
+ m_kind = TARGET_WAITKIND_THREAD_CREATED;
+ return *this;
+ }
+
+ target_waitstatus &set_thread_exited (int exit_status)
+ {
+ this->reset ();
+ m_kind = TARGET_WAITKIND_THREAD_EXITED;
+ m_value.exit_status = exit_status;
+ return *this;
+ }
+
+ /* Get the kind of this wait status. */
+
+ target_waitkind kind () const
+ {
+ return m_kind;
+ }
+
+ /* Getters for the associated data.
+
+ Getters can only be used if the wait status is of the appropriate kind.
+ See the setters above or the assertions below to know which data is
+ associated to which kind. */
+
+ int exit_status () const
+ {
+ gdb_assert (m_kind == TARGET_WAITKIND_EXITED
+ || m_kind == TARGET_WAITKIND_THREAD_EXITED);
+ return m_value.exit_status;
+ }
+
+ gdb_signal sig () const
+ {
+ gdb_assert (m_kind == TARGET_WAITKIND_STOPPED
+ || m_kind == TARGET_WAITKIND_SIGNALLED);
+ return m_value.sig;
+ }
+
+ ptid_t child_ptid () const
+ {
+ gdb_assert (m_kind == TARGET_WAITKIND_FORKED
+ || m_kind == TARGET_WAITKIND_VFORKED);
+ return m_value.child_ptid;
+ }
+
+ const char *execd_pathname () const
+ {
+ gdb_assert (m_kind == TARGET_WAITKIND_EXECD);
+ return m_value.execd_pathname;
+ }
+
+ int syscall_number () const
+ {
+ gdb_assert (m_kind == TARGET_WAITKIND_SYSCALL_ENTRY
+ || m_kind == TARGET_WAITKIND_SYSCALL_RETURN);
+ return m_value.syscall_number;
+ }
+
+ /* Return a pretty printed form of target_waitstatus.
+
+ This is only meant to be used in debug messages, not for user-visible
+ messages. */
+ std::string to_string () const;
+
+private:
+ /* Reset the wait status to its original state. */
+ void reset ()
+ {
+ if (m_kind == TARGET_WAITKIND_EXECD)
+ xfree (m_value.execd_pathname);
+
+ m_kind = TARGET_WAITKIND_IGNORE;
+ }
+
+ target_waitkind m_kind = TARGET_WAITKIND_IGNORE;
/* Additional information about the event. */
union
{
/* Exit status */
- int integer;
+ int exit_status;
/* Signal number */
enum gdb_signal sig;
/* Forked child pid */
- ptid_t related_pid;
+ ptid_t child_ptid;
/* execd pathname */
char *execd_pathname;
/* Syscall number */
int syscall_number;
- } value;
+ } m_value;
};
/* Extended reasons that can explain why a target/thread stopped for a
TARGET_STOPPED_BY_SINGLE_STEP
};
-/* Prototypes */
-
-/* Return a pretty printed form of target_waitstatus. */
-std::string target_waitstatus_to_string (const struct target_waitstatus *);
-
-#endif /* WAITSTATUS_H */
+#endif /* TARGET_WAITSTATUS_H */
projects / binutils-gdb.git / blobdiff