gdb/nat/windows-nat.h

   1 /* Internal interfaces for the Windows code
   2    Copyright (C) 1995-2020 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef NAT_WINDOWS_NAT_H
  20 #define NAT_WINDOWS_NAT_H
  21
  22 #include <windows.h>
  23
  24 /* Thread information structure used to track extra information about
  25    each thread.  */
  26 struct windows_thread_info
  27 {
  28   windows_thread_info (DWORD tid_, HANDLE h_, CORE_ADDR tlb)
  29     : tid (tid_),
  30       h (h_),
  31       thread_local_base (tlb)
  32   {
  33   }
  34
  35   DISABLE_COPY_AND_ASSIGN (windows_thread_info);
  36
  37   /* Ensure that this thread has been suspended.  */
  38   void suspend ();
  39
  40   /* Resume the thread if it has been suspended.  */
  41   void resume ();
  42
  43   /* The Win32 thread identifier.  */
  44   DWORD tid;
  45
  46   /* The handle to the thread.  */
  47   HANDLE h;
  48
  49   /* Thread Information Block address.  */
  50   CORE_ADDR thread_local_base;
  51
  52   /* This keeps track of whether SuspendThread was called on this
  53      thread.  -1 means there was a failure or that the thread was
  54      explicitly not suspended, 1 means it was called, and 0 means it
  55      was not.  */
  56   int suspended = 0;
  57
  58 #ifdef _WIN32_WCE
  59   /* The context as retrieved right after suspending the thread. */
  60   CONTEXT base_context {};
  61 #endif
  62
  63   /* The context of the thread, including any manipulations.  */
  64   union
  65   {
  66     CONTEXT context {};
  67 #ifdef __x86_64__
  68     WOW64_CONTEXT wow64_context;
  69 #endif
  70   };
  71
  72   /* Whether debug registers changed since we last set CONTEXT back to
  73      the thread.  */
  74   bool debug_registers_changed = false;
  75
  76   /* Nonzero if CONTEXT is invalidated and must be re-read from the
  77      inferior thread.  */
  78   bool reload_context = false;
  79
  80   /* The name of the thread, allocated by xmalloc.  */
  81   gdb::unique_xmalloc_ptr<char> name;
  82 };
  83
  84 #endif