Fix decoding in m68k_analyze_register_saves

[Andreas Schwab]

Fix decoding of `move.l %R,-(%sp)' during prologue analyzing.  Tested on
m68k-linux.

Andreas.

2006-09-10  Andreas Schwab  <schwab@suse.de>

	* m68k-tdep.c (m68k_analyze_register_saves): Fix decoding of
	`move.l %R,-(%sp)'.

Index: gdb/m68k-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/m68k-tdep.c,v
retrieving revision 1.107
retrieving revision 1.108
diff -u -a -p -u -p -a -r1.107 -r1.108
--- gdb/m68k-tdep.c	13 Jul 2006 09:30:46 -0000	1.107
+++ gdb/m68k-tdep.c	9 Sep 2006 23:07:32 -0000	1.108
@@ -1,7 +1,7 @@
 /* Target-dependent code for the Motorola 68000 series.
 
    Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000,
-   2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+   2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -677,10 +677,10 @@ m68k_analyze_register_saves (CORE_ADDR p
 	      else
 		break;
 	    }
-	  else if ((op & 0170677) == P_MOVEL_SP)
+	  else if ((op & 0177760) == P_MOVEL_SP)
 	    {
 	      /* move.l %R,-(%sp) */
-	      regno = ((op & 07000) >> 9) | ((op & 0100) >> 3);
+	      regno = op & 017;
 	      cache->saved_regs[regno] = offset;
 	      offset -= 4;
 	      pc += 2;

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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