gdb 6.6 sim/erc32 does not parse -E option

[Joel Sherrill <joel.sherrill@oarcorp.com>]

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Hi,

Apparently gdb 6.6 passes a -E endian option
to the sim_open hook.  The erc32 simulator
does not parse this option and produces
a error message like this:

(gdb) tar sim
unknown option -E
open of big failed
Connected to the simulator.

The attached patch is in the style of the
existing code and silently eats the -E option
if the endian value is big or little. 

2007-02-22  Joel Sherrill <joel.sherrill@oarcorp.com>

    * interf.c: Add parsing of -E <endian> option
    to eliminate error message.

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--- gdb-6.6-orig/sim/erc32/interf.c	2005-11-28 12:33:03.000000000 -0600
+++ gdb-6.6/sim/erc32/interf.c	2007-02-22 10:56:55.000000000 -0600
@@ -236,6 +236,18 @@
 		if ((stat + 1) < argc) {
 		    freq = VAL(argv[++stat]);
 		}
+	    } else
+	    if (strcmp(argv[stat], "-E") == 0) {
+		const char *endian = argv[++stat];
+		if ((strcmp(endian, "big") == 0) ||
+		    (strcmp(endian, "little") == 0)) {
+		    ;  /* not supported but correctly supplied, be silent */
+                } else {
+		    (*sim_callback->printf_filtered) (
+			sim_callback,
+			"Invalid <endian> option for -E (%s)\n",
+			endian);
+		}
 	    } else {
 		(*sim_callback->printf_filtered) (sim_callback,
 						  "unknown option %s\n",