gdb/i386-windows-nat.c

   1 /* Copyright (C) 2008-2019 Free Software Foundation, Inc.
   2
   3    This file is part of GDB.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #include "defs.h"
  19 #include "windows-nat.h"
  20 #include "x86-nat.h"
  21 #include "i386-tdep.h"
  22
  23 #include <windows.h>
  24
  25 #define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
  26 static const int mappings[] =
  27 {
  28   context_offset (Eax),
  29   context_offset (Ecx),
  30   context_offset (Edx),
  31   context_offset (Ebx),
  32   context_offset (Esp),
  33   context_offset (Ebp),
  34   context_offset (Esi),
  35   context_offset (Edi),
  36   context_offset (Eip),
  37   context_offset (EFlags),
  38   context_offset (SegCs),
  39   context_offset (SegSs),
  40   context_offset (SegDs),
  41   context_offset (SegEs),
  42   context_offset (SegFs),
  43   context_offset (SegGs),
  44   context_offset (FloatSave.RegisterArea[0 * 10]),
  45   context_offset (FloatSave.RegisterArea[1 * 10]),
  46   context_offset (FloatSave.RegisterArea[2 * 10]),
  47   context_offset (FloatSave.RegisterArea[3 * 10]),
  48   context_offset (FloatSave.RegisterArea[4 * 10]),
  49   context_offset (FloatSave.RegisterArea[5 * 10]),
  50   context_offset (FloatSave.RegisterArea[6 * 10]),
  51   context_offset (FloatSave.RegisterArea[7 * 10]),
  52   context_offset (FloatSave.ControlWord),
  53   context_offset (FloatSave.StatusWord),
  54   context_offset (FloatSave.TagWord),
  55   context_offset (FloatSave.ErrorSelector),
  56   context_offset (FloatSave.ErrorOffset),
  57   context_offset (FloatSave.DataSelector),
  58   context_offset (FloatSave.DataOffset),
  59   context_offset (FloatSave.ErrorSelector)
  60   /* XMM0-7 */ ,
  61   context_offset (ExtendedRegisters[10*16]),
  62   context_offset (ExtendedRegisters[11*16]),
  63   context_offset (ExtendedRegisters[12*16]),
  64   context_offset (ExtendedRegisters[13*16]),
  65   context_offset (ExtendedRegisters[14*16]),
  66   context_offset (ExtendedRegisters[15*16]),
  67   context_offset (ExtendedRegisters[16*16]),
  68   context_offset (ExtendedRegisters[17*16]),
  69   /* MXCSR */
  70   context_offset (ExtendedRegisters[24])
  71 };
  72 #undef context_offset
  73
  74 /* segment_register_p_ftype implementation for x86.  */
  75
  76 static int
  77 i386_windows_segment_register_p (int regnum)
  78 {
  79   return regnum >= I386_CS_REGNUM && regnum <= I386_GS_REGNUM;
  80 }
  81
  82 void
  83 _initialize_i386_windows_nat (void)
  84 {
  85   windows_set_context_register_offsets (mappings);
  86   windows_set_segment_register_p (i386_windows_segment_register_p);
  87   x86_set_debug_register_length (4);
  88 }