1*84d9c625SLionel Sambuc/* $NetBSD: cerror.S,v 1.19 2013/09/12 15:36:15 joerg Exp $ */ 22fe8fb19SBen Gras 32fe8fb19SBen Gras/*- 42fe8fb19SBen Gras * Copyright (c) 1991, 1993 52fe8fb19SBen Gras * The Regents of the University of California. All rights reserved. 62fe8fb19SBen Gras * 72fe8fb19SBen Gras * This code is derived from software contributed to Berkeley by 82fe8fb19SBen Gras * Ralph Campbell. 92fe8fb19SBen Gras * 102fe8fb19SBen Gras * Redistribution and use in source and binary forms, with or without 112fe8fb19SBen Gras * modification, are permitted provided that the following conditions 122fe8fb19SBen Gras * are met: 132fe8fb19SBen Gras * 1. Redistributions of source code must retain the above copyright 142fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer. 152fe8fb19SBen Gras * 2. Redistributions in binary form must reproduce the above copyright 162fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer in the 172fe8fb19SBen Gras * documentation and/or other materials provided with the distribution. 182fe8fb19SBen Gras * 3. Neither the name of the University nor the names of its contributors 192fe8fb19SBen Gras * may be used to endorse or promote products derived from this software 202fe8fb19SBen Gras * without specific prior written permission. 212fe8fb19SBen Gras * 222fe8fb19SBen Gras * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 232fe8fb19SBen Gras * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 242fe8fb19SBen Gras * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 252fe8fb19SBen Gras * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 262fe8fb19SBen Gras * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 272fe8fb19SBen Gras * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 282fe8fb19SBen Gras * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 292fe8fb19SBen Gras * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 302fe8fb19SBen Gras * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 312fe8fb19SBen Gras * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 322fe8fb19SBen Gras * SUCH DAMAGE. 332fe8fb19SBen Gras */ 342fe8fb19SBen Gras 352fe8fb19SBen Gras#include "SYS.h" 362fe8fb19SBen Gras 372fe8fb19SBen Gras#if defined(LIBC_SCCS) && !defined(lint) 382fe8fb19SBen Gras#if 0 392fe8fb19SBen Gras RCSID("from: @(#)cerror.s 8.1 (Berkeley) 6/16/93") 402fe8fb19SBen Gras#else 41*84d9c625SLionel Sambuc RCSID("$NetBSD: cerror.S,v 1.19 2013/09/12 15:36:15 joerg Exp $") 422fe8fb19SBen Gras#endif 432fe8fb19SBen Gras#endif /* LIBC_SCCS and not lint */ 442fe8fb19SBen Gras 45*84d9c625SLionel Sambuc#ifdef __PIC__ 46e415d488SLionel Sambuc .protected __cerror 472fe8fb19SBen Gras#endif 482fe8fb19SBen Gras 492fe8fb19SBen Gras#ifdef _REENTRANT 502fe8fb19SBen Gras .globl _C_LABEL(__errno) 512fe8fb19SBen GrasNESTED_NOPROFILE(__cerror, CALLFRAME_SIZ, ra) 522fe8fb19SBen Gras .mask 0x80000000, (CALLFRAME_RA - CALLFRAME_SIZ) 532fe8fb19SBen Gras PIC_PROLOGUE(__cerror) 542fe8fb19SBen Gras PTR_SUBU sp, CALLFRAME_SIZ 552fe8fb19SBen Gras PTR_S ra, CALLFRAME_RA(sp) 562fe8fb19SBen Gras INT_S v0, CALLFRAME_S0(sp) # save errno value 572fe8fb19SBen Gras 582fe8fb19SBen Gras SAVE_GP(CALLFRAME_GP) 592fe8fb19SBen Gras 602fe8fb19SBen Gras PTR_LA t9, _C_LABEL(__errno) # locate address of errno 612fe8fb19SBen Gras RESTORE_GP64 # restore GP (from t3) 622fe8fb19SBen Gras jalr t9 # __errno() 632fe8fb19SBen Gras 642fe8fb19SBen Gras INT_L t0, CALLFRAME_S0(sp) 652fe8fb19SBen Gras PTR_L ra, CALLFRAME_RA(sp) 662fe8fb19SBen Gras INT_S t0, 0(v0) # update errno value 672fe8fb19SBen Gras PTR_ADDU sp, CALLFRAME_SIZ 682fe8fb19SBen Gras li v0, -1 692fe8fb19SBen Gras li v1, -1 702fe8fb19SBen Gras j ra # GP has been restored. 712fe8fb19SBen GrasEND(__cerror) 722fe8fb19SBen Gras#else 732fe8fb19SBen Gras .globl _C_LABEL(errno) 742fe8fb19SBen GrasLEAF_NOPROFILE(__cerror) 752fe8fb19SBen Gras PIC_PROLOGUE(__cerror) 762fe8fb19SBen Gras INT_S v0, _C_LABEL(errno) 772fe8fb19SBen Gras li v0, -1 782fe8fb19SBen Gras li v1, -1 792fe8fb19SBen Gras PIC_RETURN() 802fe8fb19SBen GrasEND(__cerror) 812fe8fb19SBen Gras#endif /* _REENTRANT */ 82