Index: win32-nat.c
===================================================================
RCS file: /cvs/src/src/gdb/win32-nat.c,v
retrieving revision 1.38
diff -u -r1.38 win32-nat.c
--- win32-nat.c	2001/11/24 19:00:03	1.38
+++ win32-nat.c	2001/11/26 09:47:09
@@ -25,6 +25,7 @@
 /* We assume we're being built with and will be used for cygwin.  */
 
 #include "defs.h"
+#include "tm.h"			/* required for SSE registers */
 #include "frame.h"		/* required by inferior.h */
 #include "inferior.h"
 #include "target.h"
@@ -66,6 +67,13 @@
 #include <sys/procfs.h>
 #include <psapi.h>
 
+#ifdef HAVE_SSE_REGS
+#define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_EXTENDED_REGISTERS 
+#else
+#define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER
+#endif
+
+
 /* The string sent by cygwin when it processes a signal.
    FIXME: This should be in a cygwin include file. */
 #define CYGWIN_SIGNAL_STRING "cygwin: signal"
@@ -169,6 +177,19 @@
   context_offset (FloatSave.DataSelector),
   context_offset (FloatSave.DataOffset),
   context_offset (FloatSave.ErrorSelector)
+#ifdef HAVE_SSE_REGS
+  /* XMM0-7 */ ,
+  context_offset (ExtendedRegisters[0*16]),
+  context_offset (ExtendedRegisters[1*16]),
+  context_offset (ExtendedRegisters[2*16]),
+  context_offset (ExtendedRegisters[3*16]),
+  context_offset (ExtendedRegisters[4*16]),
+  context_offset (ExtendedRegisters[5*16]),
+  context_offset (ExtendedRegisters[6*16]),
+  context_offset (ExtendedRegisters[7*16]),
+  /* MXCSR untested */
+  context_offset (ExtendedRegisters[8*16])
+#endif
 };
 
 #undef context_offset
@@ -210,7 +231,7 @@
 	    else if (get_context < 0)
 	      th->suspend_count = -1;
 
-	    th->context.ContextFlags = CONTEXT_DEBUGGER;
+	    th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
 	    GetThreadContext (th->h, &th->context);
 	  }
 	return th;
Index: config/i386/tm-cygwin.h
===================================================================
RCS file: /cvs/src/src/gdb/config/i386/tm-cygwin.h,v
retrieving revision 1.10
diff -u -r1.10 tm-cygwin.h
--- tm-cygwin.h	2001/11/01 16:17:08	1.10
+++ tm-cygwin.h	2001/11/26 09:47:09
@@ -19,8 +19,12 @@
    Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
-
-#undef HAVE_SSE_REGS	/* FIXME! win32-nat.c needs to support XMMi registers */
+/* Use SSE registers if winnt.h contains information about them.  */
+#ifdef HAVE_CONTEXT_EXTENDED_REGISTERS
+#define HAVE_SSE_REGS
+#else
+#undef HAVE_SSE_REGS
+#endif /* CONTEXT_EXTENDED_REGISTERS */
 #define HAVE_I387_REGS
 
 #include "i386/tm-i386.h"