From cb14c4d641b4e083fae7ce4a0e8a3973cecb7554 Mon Sep 17 00:00:00 2001
From: Milton Miller <miltonm@bga.com>
Date: Tue, 6 Sep 2005 11:55:00 +1000
Subject: [PATCH] [PATCH] ppc64: Clean up CR handling

Make the 16550 and real mode 16550 use tail recursion like the scc code
instead of repeating the routine except for the character sent.

Gcc recoginizes the tail recursion and handles it efficently without
stack allocations.  The maple real putc shrinks from 188 to 104 bytes
of instructions.  udbg_putc drops from 188 to 140 bytes.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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