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[RFC] Mingw Windows 64-bit gdbserver


  This patch tries to implement support for 
gdbserver on Windows 64-bit, using the mingw32
cross compiler to windows-64bit.

  I am unsure if anyone else already tried this,
but searching in gdb-patches I didn't find anything...
Don't hesitate to tell me otherwise...

  The resulting gdbserver seem usable to me,

  I do have a few questions:
  - About the new file, win64-amd64-low.c
should I remove the copyright years and only leave 2010?
should I state that it is adapted from win32-i386-low.c?

 - About gdbserver/configure regeneration:
this added several lines:
+/* Needed for new procfs interface on sparc-solaris.  */
+#define _STRUCTURED_PROC 1
  I did use autoconf version 2.64 as required...
Is this normal?

 - About the used communication library:
  -lwsock32 was not found by the mingw, but main gdb
doesn't seem to use it, should we move to ws2_32 for both win32 and win64?

  I still do have a problem when I connect
to win64 gdbserver from a multi target win32 gdb executable,
somehow, the library list does not seem to correctly 
read in the library addresses... Still investigating this.
It seems related to the fact that I do not have 
local copies of my remote DLLs.

Final question:
  Does that patch deserve a documentation or NEWS entry?


Pierre Muller
Pascal language support maintainer for GDB


2010-04-16  Pierre Muller  <muller@ics.u-strasbg.fr>

	* configure.tgt (x86_64-*-mingw*): Set BUILD_GDBSERVER to yes.

gdbserver ChangeLog entry:

2010-04-16  Pierre Muller  <muller@ics.u-strasbg.fr>

	* configure.srv (srv_amd64_regobj): Replace "x86_64-avx.o"
	by "amd64-avx.o".
	(x86_64-*-mingw*): New configuration for Windows 64bit OS.
	Set srv_mingw64 variable to `yes'.
	* configure.ac: Use `ws2_32' library for mingw64 instead of
`wsock32'.
	* configure: Regenerated.
	* win32-low.c: Use uintptr_t type to store
	addresses for both 32bit and 64bit binaries.
	(child_xfer_memory): Use uintptr_t type for local variable `addr'.
	(get_image_name): Use uintptr_t for local variable `done'.
	(psapi_get_dll_name): Use uintptr_t type for parameter
`BaseAddress'.
	(toolhelp_get_dll_name): Idem.
	(handle_load_dll): Use uintptr_t type for local variable
`load_addr'.
	(handle_unload_dll): Use unitptr_t typecast to avoid warning.
	(handle_exception): Use phex_nz to avoid warning.
	(win32_wait): Remove unused local variable `process'.
	* win64-amd64-low.c: New file adapted from win32-i386-low.c.


Index: configure.tgt
===================================================================
RCS file: /cvs/src/src/gdb/configure.tgt,v
retrieving revision 1.230
diff -u -p -r1.230 configure.tgt
--- configure.tgt	25 Feb 2010 20:30:58 -0000	1.230
+++ configure.tgt	16 Apr 2010 14:32:54 -0000
@@ -590,6 +590,7 @@ x86_64-*-mingw*)
 	gdb_target_obs="amd64-tdep.o amd64-windows-tdep.o \
                         i386-tdep.o i386-cygwin-tdep.o i387-tdep.o \
                         solib-target.o windows-tdep.o"
+	build_gdbserver=yes
         ;;
 x86_64-*-netbsd* | x86_64-*-knetbsd*-gnu)
 	# Target: NetBSD/amd64
Index: gdbserver/configure
===================================================================
RCS file: /cvs/src/src/gdb/gdbserver/configure,v
retrieving revision 1.46
diff -u -p -r1.46 configure
--- gdbserver/configure	23 Feb 2010 19:16:16 -0000	1.46
+++ gdbserver/configure	16 Apr 2010 14:32:55 -0000
@@ -4055,6 +4055,8 @@ esac
 
 if test "${srv_mingwce}" = "yes"; then
   LIBS="$LIBS -lws2"
+elif test "${srv_mingw64}" = "yes"; then
+  LIBS="$LIBS -lws2_32"
 elif test "${srv_mingw}" = "yes"; then
   LIBS="$LIBS -lwsock32"
 elif test "${srv_qnx}" = "yes"; then
@@ -4153,6 +4155,8 @@ else
 /* end confdefs.h.  */
 
 #define _SYSCALL32
+/* Needed for new procfs interface on sparc-solaris.  */
+#define _STRUCTURED_PROC 1
 #include <sys/procfs.h>
 int
 main ()
@@ -4188,6 +4192,8 @@ else
 /* end confdefs.h.  */
 
 #define _SYSCALL32
+/* Needed for new procfs interface on sparc-solaris.  */
+#define _STRUCTURED_PROC 1
 #include <sys/procfs.h>
 int
 main ()
@@ -4223,6 +4229,8 @@ else
 /* end confdefs.h.  */
 
 #define _SYSCALL32
+/* Needed for new procfs interface on sparc-solaris.  */
+#define _STRUCTURED_PROC 1
 #include <sys/procfs.h>
 int
 main ()
@@ -4258,6 +4266,8 @@ else
 /* end confdefs.h.  */
 
 #define _SYSCALL32
+/* Needed for new procfs interface on sparc-solaris.  */
+#define _STRUCTURED_PROC 1
 #include <sys/procfs.h>
 int
 main ()
Index: gdbserver/configure.ac
===================================================================
RCS file: /cvs/src/src/gdb/gdbserver/configure.ac,v
retrieving revision 1.33
diff -u -p -r1.33 configure.ac
--- gdbserver/configure.ac	23 Feb 2010 19:16:16 -0000	1.33
+++ gdbserver/configure.ac	16 Apr 2010 14:32:55 -0000
@@ -117,6 +117,8 @@ esac
 
 if test "${srv_mingwce}" = "yes"; then
   LIBS="$LIBS -lws2"
+elif test "${srv_mingw64}" = "yes"; then
+  LIBS="$LIBS -lws2_32"
 elif test "${srv_mingw}" = "yes"; then
   LIBS="$LIBS -lwsock32"
 elif test "${srv_qnx}" = "yes"; then
Index: gdbserver/configure.srv
===================================================================
RCS file: /cvs/src/src/gdb/gdbserver/configure.srv,v
retrieving revision 1.53
diff -u -p -r1.53 configure.srv
--- gdbserver/configure.srv	8 Apr 2010 22:32:38 -0000	1.53
+++ gdbserver/configure.srv	16 Apr 2010 14:32:55 -0000
@@ -24,7 +24,7 @@ srv_hostio_err_objs="hostio-errno.o"
 
 srv_i386_regobj="i386.o i386-avx.o i386-mmx.o"
 srv_i386_linux_regobj="i386-linux.o i386-avx-linux.o i386-mmx-linux.o"
-srv_amd64_regobj="amd64.o x86-64-avx.o"
+srv_amd64_regobj="amd64.o amd64-avx.o"
 srv_amd64_linux_regobj="amd64-linux.o amd64-avx-linux.o"
 
 srv_i386_32bit_xmlfiles="i386/32bit-core.xml i386/32bit-sse.xml
i386/32bit-avx.xml"
@@ -231,6 +231,13 @@ case "${target}" in
 			srv_linux_regsets=yes
 			srv_linux_thread_db=yes
 			;;
+  x86_64-w64-mingw*)	srv_regobj="$srv_amd64_regobj"
+			srv_tgtobj="i386-low.o i387-fp.o win32-low.o
win64-amd64-low.o"
+			srv_xmlfiles="$srv_i386_xmlfiles
$srv_amd64_xmlfiles"
+			srv_mingw64=yes
+			srv_mingw=yes
+			;;
+
   xscale*-*-linux*)	srv_regobj=reg-arm.o
 			srv_tgtobj="linux-low.o linux-arm-low.o"
 			srv_linux_usrregs=yes
Index: gdbserver/win32-low.c
===================================================================
RCS file: /cvs/src/src/gdb/gdbserver/win32-low.c,v
retrieving revision 1.46
diff -u -p -r1.46 win32-low.c
--- gdbserver/win32-low.c	16 Apr 2010 07:49:37 -0000	1.46
+++ gdbserver/win32-low.c	16 Apr 2010 14:32:55 -0000
@@ -280,7 +280,7 @@ child_xfer_memory (CORE_ADDR memaddr, ch
 		   int write, struct target_ops *target)
 {
   SIZE_T done;
-  long addr = (long) memaddr;
+  uintptr_t addr = (uintptr_t) memaddr;
 
   if (write)
     {
@@ -941,7 +941,7 @@ get_image_name (HANDLE h, void *address,
   char *address_ptr;
   int len = 0;
   char b[2];
-  DWORD done;
+  uintptr_t done;
 
   /* Attempt to read the name of the dll that was detected.
      This is documented to work only when actively debugging
@@ -1019,7 +1019,7 @@ load_psapi (void)
 }
 
 static int
-psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret)
+psapi_get_dll_name (uintptr_t BaseAddress, char *dll_name_ret)
 {
   DWORD len;
   MODULEINFO mi;
@@ -1064,7 +1064,7 @@ psapi_get_dll_name (DWORD BaseAddress, c
 		 (int) err, strwinerror (err));
 	}
 
-      if ((DWORD) (mi.lpBaseOfDll) == BaseAddress)
+      if ((uintptr_t) (mi.lpBaseOfDll) == BaseAddress)
 	{
 	  len = (*win32_GetModuleFileNameExA) (current_process_handle,
 					       DllHandle[i],
@@ -1134,7 +1134,7 @@ load_toolhelp (void)
 }
 
 static int
-toolhelp_get_dll_name (DWORD BaseAddress, char *dll_name_ret)
+toolhelp_get_dll_name (uintptr_t BaseAddress, char *dll_name_ret)
 {
   HANDLE snapshot_module;
   MODULEENTRY32 modEntry = { sizeof (MODULEENTRY32) };
@@ -1151,7 +1151,7 @@ toolhelp_get_dll_name (DWORD BaseAddress
   /* Ignore the first module, which is the exe.  */
   if (win32_Module32First (snapshot_module, &modEntry))
     while (win32_Module32Next (snapshot_module, &modEntry))
-      if ((DWORD) modEntry.modBaseAddr == BaseAddress)
+      if ((uintptr_t) modEntry.modBaseAddr == BaseAddress)
 	{
 #ifdef UNICODE
 	  wcstombs (dll_name_ret, modEntry.szExePath, MAX_PATH + 1);
@@ -1176,21 +1176,21 @@ handle_load_dll (void)
   LOAD_DLL_DEBUG_INFO *event = &current_event.u.LoadDll;
   char dll_buf[MAX_PATH + 1];
   char *dll_name = NULL;
-  DWORD load_addr;
+  uintptr_t load_addr;
 
   dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
 
   /* Windows does not report the image name of the dlls in the debug
      event on attaches.  We resort to iterating over the list of
      loaded dlls looking for a match by image base.  */
-  if (!psapi_get_dll_name ((DWORD) event->lpBaseOfDll, dll_buf))
+  if (!psapi_get_dll_name ((uintptr_t) event->lpBaseOfDll, dll_buf))
     {
       if (!server_waiting)
 	/* On some versions of Windows and Windows CE, we can't create
 	   toolhelp snapshots while the inferior is stopped in a
 	   LOAD_DLL_DEBUG_EVENT due to a dll load, but we can while
 	   Windows is reporting the already loaded dlls.  */
-	toolhelp_get_dll_name ((DWORD) event->lpBaseOfDll, dll_buf);
+	toolhelp_get_dll_name ((uintptr_t) event->lpBaseOfDll, dll_buf);
     }
 
   dll_name = dll_buf;
@@ -1205,7 +1205,7 @@ handle_load_dll (void)
      the offset from 0 of the first byte in an image - because
      of the file header and the section alignment. */
 
-  load_addr = (DWORD) event->lpBaseOfDll + 0x1000;
+  load_addr = (uintptr_t) event->lpBaseOfDll + 0x1000;
   win32_add_one_solib (dll_name, load_addr);
 }
 
@@ -1213,7 +1213,7 @@ static void
 handle_unload_dll (void)
 {
   CORE_ADDR load_addr =
-	  (CORE_ADDR) (DWORD) current_event.u.UnloadDll.lpBaseOfDll;
+	  (CORE_ADDR) (uintptr_t) current_event.u.UnloadDll.lpBaseOfDll;
   load_addr += 0x1000;
   unloaded_dll (NULL, load_addr);
 }
@@ -1314,10 +1314,10 @@ handle_exception (struct target_waitstat
 	  ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
 	  return;
 	}
-      OUTMSG2 (("gdbserver: unknown target exception 0x%08lx at 0x%08lx",
+      OUTMSG2 (("gdbserver: unknown target exception 0x%08lx at 0x%s",
 		current_event.u.Exception.ExceptionRecord.ExceptionCode,
-		(DWORD) current_event.u.Exception.ExceptionRecord.
-		ExceptionAddress));
+		phex_nz ((uintptr_t)
current_event.u.Exception.ExceptionRecord.
+		ExceptionAddress, sizeof(uintptr_t))));
       ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
       break;
     }
@@ -1577,7 +1577,6 @@ get_child_debug_event (struct target_wai
 static ptid_t
 win32_wait (ptid_t ptid, struct target_waitstatus *ourstatus, int options)
 {
-  struct process_info *process;
   struct regcache *regcache;
 
   while (1)
Index: gdbserver/win64-amd64-low.c
===================================================================
RCS file: gdbserver/win64-amd64-low.c
diff -N gdbserver/win64-amd64-low.c
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ gdbserver/win64-amd64-low.c	16 Apr 2010 14:32:55 -0000
@@ -0,0 +1,343 @@
+/* Copyright (C) 2007, 2008, 2009, 2010 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 "server.h"
+#include "win32-low.h"
+#include "i386-low.h"
+
+#define FCS_REGNUM 27
+#define FOP_REGNUM 31
+
+#define FLAG_TRACE_BIT 0x100
+
+#ifndef CONTEXT_EXTENDED_REGISTERS
+#define CONTEXT_EXTENDED_REGISTERS 0
+#endif
+
+/* Defined in auto-generated file reg-amd64.c.  */
+void init_registers_amd64 (void);
+
+static struct i386_debug_reg_state debug_reg_state;
+
+static int debug_registers_changed = 0;
+static int debug_registers_used = 0;
+
+/* Update the inferior's debug register REGNUM from STATE.  */
+
+void
+i386_dr_low_set_addr (const struct i386_debug_reg_state *state, int regnum)
+{
+  if (! (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR))
+    fatal ("Invalid debug register %d", regnum);
+
+  /* debug_reg_state.dr_mirror is already set.
+     Just notify i386_set_thread_context, i386_thread_added
+     that the registers need to be updated.  */
+  debug_registers_changed = 1;
+  debug_registers_used = 1;
+}
+
+/* Update the inferior's DR7 debug control register from STATE.  */
+
+void
+i386_dr_low_set_control (const struct i386_debug_reg_state *state)
+{
+  /* debug_reg_state.dr_control_mirror is already set.
+     Just notify i386_set_thread_context, i386_thread_added
+     that the registers need to be updated.  */
+  debug_registers_changed = 1;
+  debug_registers_used = 1;
+}
+
+/* Get the value of the DR6 debug status register from the inferior
+   and record it in STATE.  */
+
+void
+i386_dr_low_get_status (struct i386_debug_reg_state *state)
+{
+  /* We don't need to do anything here, the last call to thread_rec for
+     current_event.dwThreadId id has already set it.  */
+}
+
+/* Watchpoint support.  */
+
+static int
+amd64_insert_point (char type, CORE_ADDR addr, int len)
+{
+  switch (type)
+    {
+    case '2':
+    case '3':
+    case '4':
+      return i386_low_insert_watchpoint (&debug_reg_state,
+					 type, addr, len);
+    default:
+      /* Unsupported.  */
+      return 1;
+    }
+}
+
+static int
+amd64_remove_point (char type, CORE_ADDR addr, int len)
+{
+  switch (type)
+    {
+    case '2':
+    case '3':
+    case '4':
+      return i386_low_remove_watchpoint (&debug_reg_state,
+					 type, addr, len);
+    default:
+      /* Unsupported.  */
+      return 1;
+    }
+}
+
+static int
+amd64_stopped_by_watchpoint (void)
+{
+  return i386_low_stopped_by_watchpoint (&debug_reg_state);
+}
+
+static CORE_ADDR
+amd64_stopped_data_address (void)
+{
+  CORE_ADDR addr;
+  if (i386_low_stopped_data_address (&debug_reg_state, &addr))
+    return addr;
+  return 0;
+}
+
+static void
+amd64_initial_stuff (void)
+{
+  i386_low_init_dregs (&debug_reg_state);
+  debug_registers_changed = 0;
+  debug_registers_used = 0;
+}
+
+static void
+amd64_get_thread_context (win32_thread_info *th, DEBUG_EVENT*
current_event)
+{
+  /* Requesting the CONTEXT_EXTENDED_REGISTERS register set fails if
+     the system doesn't support extended registers.  */
+  static DWORD extended_registers = CONTEXT_EXTENDED_REGISTERS;
+
+ again:
+  th->context.ContextFlags = (CONTEXT_FULL
+			      | CONTEXT_FLOATING_POINT
+			      | CONTEXT_DEBUG_REGISTERS
+			      | extended_registers);
+
+  if (!GetThreadContext (th->h, &th->context))
+    {
+      DWORD e = GetLastError ();
+
+      if (extended_registers && e == ERROR_INVALID_PARAMETER)
+	{
+	  extended_registers = 0;
+	  goto again;
+	}
+
+      error ("GetThreadContext failure %ld\n", (long) e);
+    }
+
+  debug_registers_changed = 0;
+
+  if (th->tid == current_event->dwThreadId)
+    {
+      /* Copy dr values from the current thread.  */
+      struct i386_debug_reg_state *dr = &debug_reg_state;
+      dr->dr_mirror[0] = th->context.Dr0;
+      dr->dr_mirror[1] = th->context.Dr1;
+      dr->dr_mirror[2] = th->context.Dr2;
+      dr->dr_mirror[3] = th->context.Dr3;
+      dr->dr_status_mirror = th->context.Dr6;
+      dr->dr_control_mirror = th->context.Dr7;
+    }
+}
+
+static void
+amd64_set_thread_context (win32_thread_info *th, DEBUG_EVENT*
current_event)
+{
+  if (debug_registers_changed)
+    {
+      struct i386_debug_reg_state *dr = &debug_reg_state;
+      th->context.Dr0 = dr->dr_mirror[0];
+      th->context.Dr1 = dr->dr_mirror[1];
+      th->context.Dr2 = dr->dr_mirror[2];
+      th->context.Dr3 = dr->dr_mirror[3];
+      /* th->context.Dr6 = dr->dr_status_mirror;
+	 FIXME: should we set dr6 also ?? */
+      th->context.Dr7 = dr->dr_control_mirror;
+    }
+
+  SetThreadContext (th->h, &th->context);
+}
+
+static void
+amd64_thread_added (win32_thread_info *th)
+{
+  /* Set the debug registers for the new thread if they are used.  */
+  if (debug_registers_used)
+    {
+      struct i386_debug_reg_state *dr = &debug_reg_state;
+      th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
+      GetThreadContext (th->h, &th->context);
+
+      th->context.Dr0 = dr->dr_mirror[0];
+      th->context.Dr1 = dr->dr_mirror[1];
+      th->context.Dr2 = dr->dr_mirror[2];
+      th->context.Dr3 = dr->dr_mirror[3];
+      /* th->context.Dr6 = dr->dr_status_mirror;
+	 FIXME: should we set dr6 also ?? */
+      th->context.Dr7 = dr->dr_control_mirror;
+
+      SetThreadContext (th->h, &th->context);
+      th->context.ContextFlags = 0;
+    }
+}
+
+static void
+amd64_single_step (win32_thread_info *th)
+{
+  th->context.EFlags |= FLAG_TRACE_BIT;
+}
+
+/* An array of offset mappings into a Win64 Context structure.
+   This is a one-to-one mapping which is indexed by gdb's register
+   numbers.  It retrieves an offset into the context structure where
+   the register is located.
+   An offset value of -1 indicates that Win64 does not provide this
+   register in it's CONTEXT structure.  In this case regptr will return
+   a pointer into a dummy register.  */
+#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
+
+/* Fetch register from gdbserver regcache data.  */
+static void
+amd64_fetch_inferior_register (struct regcache *regcache,
+			      win32_thread_info *th, int r)
+{
+  char *context_offset = (char *) &th->context + mappings[r];
+
+  long l;
+  if (r == FCS_REGNUM)
+    {
+      l = *((long *) context_offset) & 0xffff;
+      supply_register (regcache, r, (char *) &l);
+    }
+  else if (r == FOP_REGNUM)
+    {
+      l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
+      supply_register (regcache, r, (char *) &l);
+    }
+  else
+    supply_register (regcache, r, context_offset);
+}
+
+/* Store a new register value into the thread context of TH.  */
+static void
+amd64_store_inferior_register (struct regcache *regcache,
+			      win32_thread_info *th, int r)
+{
+  char *context_offset = (char *) &th->context + mappings[r];
+  collect_register (regcache, r, context_offset);
+}
+
+static const unsigned char amd64_win64_breakpoint = 0xcc;
+#define amd64_win64_breakpoint_len 1
+
+struct win32_target_ops the_low_target = {
+  init_registers_amd64,
+  sizeof (mappings) / sizeof (mappings[0]),
+  amd64_initial_stuff,
+  amd64_get_thread_context,
+  amd64_set_thread_context,
+  amd64_thread_added,
+  amd64_fetch_inferior_register,
+  amd64_store_inferior_register,
+  amd64_single_step,
+  &amd64_win64_breakpoint,
+  amd64_win64_breakpoint_len,
+  amd64_insert_point,
+  amd64_remove_point,
+  amd64_stopped_by_watchpoint,
+  amd64_stopped_data_address
+};


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