X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=gdb%2Finf-ptrace.h;h=98b5d2e09e686b0c4490f1fd442e4be61bab6a61;hb=HEAD;hp=086649defde3028e84f7c190e7ca7f0ec10bab32;hpb=0fb0cc7590113e9b459dfcc48dc71c9d419d9580;p=thirdparty%2Fbinutils-gdb.git

diff --git a/gdb/inf-ptrace.h b/gdb/inf-ptrace.h
index 086649defde..868bee92da8 100644
--- a/gdb/inf-ptrace.h
+++ b/gdb/inf-ptrace.h
@@ -1,6 +1,6 @@
 /* Low level child interface to ptrace.
 
-   Copyright (C) 2004, 2005, 2007, 2008, 2009 Free Software Foundation, Inc.
+   Copyright (C) 2004-2024 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -20,17 +20,97 @@
 #ifndef INF_PTRACE_H
 #define INF_PTRACE_H
 
-/* Create a prototype ptrace target.  The client can override it with
-   local methods.  */
+#include "gdbsupport/event-pipe.h"
+#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)
-					(struct gdbarch *, int, int));
+  void attach (const char *, int) override;
+
+  void detach (inferior *inf, int) override;
+
+  void close () override;
+
+  void resume (ptid_t, int, enum gdb_signal) override;
+
+  ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) 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;
+
+  bool is_async_p () override
+  { return m_event_pipe.is_open (); }
+
+  int async_wait_fd () override
+  { return m_event_pipe.event_fd (); }
+
+  /* Helper routine used from SIGCHLD handlers to signal the async
+     event pipe.  */
+  static void async_file_mark_if_open ()
+  {
+    if (m_event_pipe.is_open ())
+      m_event_pipe.mark ();
+  }
+
+protected:
+  /* Helper routines for interacting with the async event pipe.  */
+  bool async_file_open ()
+  { return m_event_pipe.open_pipe (); }
+  void async_file_close ()
+  { m_event_pipe.close_pipe (); }
+  void async_file_flush ()
+  { m_event_pipe.flush (); }
+  void async_file_mark ()
+  { m_event_pipe.mark (); }
+
+  /* Cleanup the inferior after a successful ptrace detach.  */
+  void detach_success (inferior *inf);
+
+  /* Some targets don't allow us to request notification of inferior events
+     such as fork and vfork immediately after the inferior is created.
+     (This is because of how gdb creates inferiors via invoking a shell to
+     do it.  In such a scenario, if the shell init file has commands in it,
+     the shell will fork and exec for each of those commands, and we will
+     see each such fork event.  Very bad.)
+
+     Such targets will supply an appropriate definition for this
+     function.  */
+  virtual void post_startup_inferior (ptid_t ptid) = 0;
+
+private:
+  static event_pipe m_event_pipe;
+};
+
+#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