1*1c53db49Stsutsui/* $NetBSD: getchar.S,v 1.5 2011/03/26 15:49:26 tsutsui Exp $ */ 2326cce3cSsimonb 3326cce3cSsimonb/*- 4326cce3cSsimonb * Copyright (c) 1999 The NetBSD Foundation, Inc. 5326cce3cSsimonb * All rights reserved. 6326cce3cSsimonb * 7326cce3cSsimonb * This code is derived from software contributed to The NetBSD Foundation 8326cce3cSsimonb * by Jonathan Stone, Michael Hitch and Simon Burge. 9326cce3cSsimonb * 10326cce3cSsimonb * Redistribution and use in source and binary forms, with or without 11326cce3cSsimonb * modification, are permitted provided that the following conditions 12326cce3cSsimonb * are met: 13326cce3cSsimonb * 1. Redistributions of source code must retain the above copyright 14326cce3cSsimonb * notice, this list of conditions and the following disclaimer. 15326cce3cSsimonb * 2. Redistributions in binary form must reproduce the above copyright 16326cce3cSsimonb * notice, this list of conditions and the following disclaimer in the 17326cce3cSsimonb * documentation and/or other materials provided with the distribution. 18326cce3cSsimonb * 19326cce3cSsimonb * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20326cce3cSsimonb * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21326cce3cSsimonb * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22326cce3cSsimonb * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23326cce3cSsimonb * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24326cce3cSsimonb * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25326cce3cSsimonb * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26326cce3cSsimonb * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27326cce3cSsimonb * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28326cce3cSsimonb * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29326cce3cSsimonb * POSSIBILITY OF SUCH DAMAGE. 30326cce3cSsimonb */ 31326cce3cSsimonb 32326cce3cSsimonb#include <mips/asm.h> 33326cce3cSsimonb#include <mips/cpuregs.h> 34326cce3cSsimonb#include <machine/dec_prom.h> 35326cce3cSsimonb 36*1c53db49Stsutsui .set reorder # make as(1) handle hazard and BDslot 37326cce3cSsimonbLEAF(getchar) 38326cce3cSsimonb lw v0, _C_LABEL(callv) # get pointer to call back vectors 39326cce3cSsimonb lw v0, 0x24(v0) # offset for callv->_getchar 40326cce3cSsimonb j v0 # call PROM getchar 41326cce3cSsimonbEND(getchar) 42