gdb/inf-ptrace.h

   1 /* Low level child interface to ptrace.
   2
   3    Copyright (C) 2004-2020 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef INF_PTRACE_H
  21 #define INF_PTRACE_H
  22
  23 #include "inf-child.h"
  24
  25 /* An abstract prototype ptrace target.  The client can override it
  26    with local methods.  */
  27
  28 struct inf_ptrace_target : public inf_child_target
  29 {
  30   ~inf_ptrace_target () override = 0;
  31
  32   void attach (const char *, int) override;
  33
  34   void detach (inferior *inf, int) override;
  35
  36   void resume (ptid_t, int, enum gdb_signal) override;
  37
  38   ptid_t wait (ptid_t, struct target_waitstatus *, int) override;
  39
  40   void files_info () override;
  41
  42   void kill () override;
  43
  44   void create_inferior (const char *, const std::string &,
  45                         char **, int) override;
  46
  47   void mourn_inferior () override;
  48
  49   bool thread_alive (ptid_t ptid) override;
  50
  51   std::string pid_to_str (ptid_t) override;
  52
  53   enum target_xfer_status xfer_partial (enum target_object object,
  54                                         const char *annex,
  55                                         gdb_byte *readbuf,
  56                                         const gdb_byte *writebuf,
  57                                         ULONGEST offset, ULONGEST len,
  58                                         ULONGEST *xfered_len) override;
  59
  60 protected:
  61   /* Cleanup the inferior after a successful ptrace detach.  */
  62   void detach_success (inferior *inf);
  63 };
  64
  65 #ifndef __NetBSD__
  66 /* Return which PID to pass to ptrace in order to observe/control the
  67    tracee identified by PTID.
  68
  69    Unlike most other Operating Systems, NetBSD tracks both pid and lwp
  70    and avoids this function.  */
  71
  72 extern pid_t get_ptrace_pid (ptid_t);
  73 #endif
  74
  75 #endif