gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gdb / inf-ptrace.h

diff --git a/gdb/inf-ptrace.h b/gdb/inf-ptrace.h
index 4860bcba86fb1d6049c47f0f9028300fc12eb606..e2079faee3dc20c73d777f7935ad639f6a1bba81 100644 (file)
--- a/gdb/inf-ptrace.h
+++ b/gdb/inf-ptrace.h
@@ -1,12 +1,12 @@
 /* Low level child interface to ptrace.
 
-   Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2004-2020 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 2 of the License, or
+   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,
@@ -15,23 +15,61 @@
    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, write to the Free Software
-   Foundation, Inc., 51 Franklin Street, Fifth Floor,
-   Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #ifndef INF_PTRACE_H
 #define INF_PTRACE_H
 
-/* Create a prototype ptrace target.  The client can override it with
-   local methods.  */
+#include "inf-child.h"
 
-extern struct target_ops *inf_ptrace_target (void);
+/* An abstract prototype ptrace target.  The client can override it
+   with local methods.  */
 
-/* Create a "traditional" ptrace target.  REGISTER_U_OFFSET should be
-   a function returning the offset within the user area where a
-   particular register is stored.  */
+struct inf_ptrace_target : public inf_child_target
+{
+  ~inf_ptrace_target () override = 0;
 
-extern struct target_ops *
-  inf_ptrace_trad_target (CORE_ADDR (*register_u_offset)(int));
+  void attach (const char *, int) override;
+
+  void detach (inferior *inf, int) override;
+
+  void resume (ptid_t, int, enum gdb_signal) override;
+
+  ptid_t wait (ptid_t, struct target_waitstatus *, int) override;
+
+  void files_info () override;
+
+  void kill () override;
+
+  void create_inferior (const char *, const std::string &,
+                       char **, int) override;
+
+  void mourn_inferior () override;
+
+  bool thread_alive (ptid_t ptid) override;
+
+  std::string pid_to_str (ptid_t) override;
+
+  enum target_xfer_status xfer_partial (enum target_object object,
+                                       const char *annex,
+                                       gdb_byte *readbuf,
+                                       const gdb_byte *writebuf,
+                                       ULONGEST offset, ULONGEST len,
+                                       ULONGEST *xfered_len) override;
+
+protected:
+  /* Cleanup the inferior after a successful ptrace detach.  */
+  void detach_success (inferior *inf);
+};
+
+#ifndef __NetBSD__
+/* Return which PID to pass to ptrace in order to observe/control the
+   tracee identified by PTID.
+
+   Unlike most other Operating Systems, NetBSD tracks both pid and lwp
+   and avoids this function.  */
+
+extern pid_t get_ptrace_pid (ptid_t);
+#endif
 
 #endif