2001-11-08 Martin M. Hunt <hunt@redhat.com>

2001-11-08  Martin M. Hunt  <hunt@redhat.com>
	* generic/gdbtk-cmds.c (gdb_eval): Add an optional
	format argument.
	(hex2bin): Swap bytes around if target is little endian.
	Fix loop count.
	(gdb_incr_addr): New function to do address arithmetic.
	Needed because some addresses are 64-bits and tcl can't
	deal with them, except as strings.

	* library/memwin.itb (MemWin::build_win): Add a label
	to indicate the target endianess.
	(MemWin::edit): Use gdb_incr_addr.
	(MemWin::busy): The constructor calls gdbtk_busy which
	calls this before the window has finished drawing, so
	don't disable items that don't exist yet.
	(MemWin::update_address): Set a flag, bad_expr, if the
	expression does not evaluate. Call gdb_eval with 'x' flag
	to force the result to be hex.
	(MemWin::BadExpr): Set bad_expr.
	(MemWin::incr_addr): Use gdb_incr_addr.
	(MemWin::update_addr): Return is bad_expr is set. Use
	gdb_incr_addr.
	(MemWin::goto): Call update_address.
	* library/memwin.itb: Declare private variable bad_expr.

	* library/util.tcl (gdbtk_endian): New procedure. Returns
	BIG or LITTLE to indicate target endianess.