* amd64-windows-nat.c, amd64-windows-tdep.c: New files.

* config/i386/mingw64.mh, config/i386/nm-cygwin64.h: New files.
        * configure.host, configure.tgt: Add handling for x86_64/windows.
        * config/djgpp/fnchange.lst: Add entries for amd64-windows-nat.c
        and amd64-windows-tdep.c.

gdb/amd64-windows-nat.c

@@ -0,0 +1,92 @@
+/* Copyright (C) 2008, 2009 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "defs.h"
+#include "win32-nat.h"
+
+#include <windows.h>
+
+#define context_offset(x) (offsetof (CONTEXT, x))
+static const int mappings[] =
+{
+  context_offset (Rax),
+  context_offset (Rbx),
+  context_offset (Rcx),
+  context_offset (Rdx),
+  context_offset (Rsi),
+  context_offset (Rdi),
+  context_offset (Rbp),
+  context_offset (Rsp),
+  context_offset (R8),
+  context_offset (R9),
+  context_offset (R10),
+  context_offset (R11),
+  context_offset (R12),
+  context_offset (R13),
+  context_offset (R14),
+  context_offset (R15),
+  context_offset (Rip),
+  context_offset (EFlags),
+  context_offset (SegCs),
+  context_offset (SegSs),
+  context_offset (SegDs),
+  context_offset (SegEs),
+  context_offset (SegFs),
+  context_offset (SegGs),
+  context_offset (FloatSave.FloatRegisters[0]),
+  context_offset (FloatSave.FloatRegisters[1]),
+  context_offset (FloatSave.FloatRegisters[2]),
+  context_offset (FloatSave.FloatRegisters[3]),
+  context_offset (FloatSave.FloatRegisters[4]),
+  context_offset (FloatSave.FloatRegisters[5]),
+  context_offset (FloatSave.FloatRegisters[6]),
+  context_offset (FloatSave.FloatRegisters[7]),
+  context_offset (FloatSave.ControlWord),
+  context_offset (FloatSave.StatusWord),
+  context_offset (FloatSave.TagWord),
+  context_offset (FloatSave.ErrorSelector),
+  context_offset (FloatSave.ErrorOffset),
+  context_offset (FloatSave.DataSelector),
+  context_offset (FloatSave.DataOffset),
+  context_offset (FloatSave.ErrorSelector)
+  /* XMM0-7 */ ,
+  context_offset (Xmm0),
+  context_offset (Xmm1),
+  context_offset (Xmm2),
+  context_offset (Xmm3),
+  context_offset (Xmm4),
+  context_offset (Xmm5),
+  context_offset (Xmm6),
+  context_offset (Xmm7),
+  context_offset (Xmm8),
+  context_offset (Xmm9),
+  context_offset (Xmm10),
+  context_offset (Xmm11),
+  context_offset (Xmm12),
+  context_offset (Xmm13),
+  context_offset (Xmm14),
+  context_offset (Xmm15),
+  /* MXCSR */
+  context_offset (FloatSave.MxCsr)
+};
+#undef context_offset
+
+void
+_initialize_amd64_windows_nat (void)
+{
+  win32_set_context_register_offsets (mappings);
+}