[RFC] sim: Update sim_{fetch,store}_register for sh and mn10300

[Kevin Buettner <kevinb@redhat.com>]

The patch below updates sim_fetch_register for both mn10300 and sh
to return the length of the value being fetched instead of -1.  For
sh, sim_store_register() is changed in a like fashion.

This change is necessary due to past changes to remote-sim.c which do
more stringent checks of the return value.

Comments?

sim/mn10300/ChangeLog:

	* interp.c (sim_fetch_register): Return length, not -1.

sim/ChangeLog:

	* sh/interp.c (sim_store_register, sim_fetch_register): Return
	length, not -1.


Index: sim/mn10300/interp.c
===================================================================
RCS file: /cvs/src/src/sim/mn10300/interp.c,v
retrieving revision 1.7
diff -u -p -r1.7 interp.c
--- sim/mn10300/interp.c	5 Jul 2011 19:06:38 -0000	1.7
+++ sim/mn10300/interp.c	15 Feb 2012 23:59:49 -0000
@@ -383,7 +383,7 @@ sim_fetch_register (SIM_DESC sd,
 		    int length)
 {
   put_word (memory, State.regs[rn]);
-  return -1;
+  return length;
 }
  
 int
Index: sim/sh/interp.c
===================================================================
RCS file: /cvs/src/src/sim/sh/interp.c,v
retrieving revision 1.23
diff -u -p -r1.23 interp.c
--- sim/sh/interp.c	16 Apr 2011 18:16:36 -0000	1.23
+++ sim/sh/interp.c	15 Feb 2012 23:59:49 -0000
@@ -2356,7 +2356,7 @@ sim_store_register (sd, rn, memory, leng
     default:
       return 0;
     }
-  return -1;
+  return length;
 }
 
 int
@@ -2531,7 +2531,7 @@ sim_fetch_register (sd, rn, memory, leng
       return 0;
     }
   * (int *) memory = swap (val);
-  return -1;
+  return length;
 }
 
 int