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   ~windows_thread_info ()
  36   {
  37     xfree (name);
  38   }
  39
  40   DISABLE_COPY_AND_ASSIGN (windows_thread_info);
  41
  42   /* The Win32 thread identifier.  */
  43   DWORD tid;
  44
  45   /* The handle to the thread.  */
  46   HANDLE h;
  47
  48   /* Thread Information Block address.  */
  49   CORE_ADDR thread_local_base;
  50
  51   /* This keeps track of whether SuspendThread was called on this
  52      thread.  -1 means there was a failure or that the thread was
  53      explicitly not suspended, 1 means it was called, and 0 means it
  54      was not.  */
  55   int suspended = 0;
  56
  57 #ifdef _WIN32_WCE
  58   /* The context as retrieved right after suspending the thread. */
  59   CONTEXT base_context {};
  60 #endif
  61
  62   /* The context of the thread, including any manipulations.  */
  63   union
  64   {
  65     CONTEXT context {};
  66 #ifdef __x86_64__
  67     WOW64_CONTEXT wow64_context;
  68 #endif
  69   };
  70
  71   /* Whether debug registers changed since we last set CONTEXT back to
  72      the thread.  */
  73   bool debug_registers_changed = false;
  74
  75   /* Nonzero if CONTEXT is invalidated and must be re-read from the
  76      inferior thread.  */
  77   bool reload_context = false;
  78
  79   /* The name of the thread, allocated by xmalloc.  */
  80   char *name = nullptr;
  81 };
  82
  83 #endif