1*35c34461Smatt/* $NetBSD: cerror.S,v 1.3 2015/03/27 23:23:14 matt Exp $ */ 26cf6fe02Smatt 36cf6fe02Smatt/*- 46cf6fe02Smatt * Copyright (c) 1991, 1993 56cf6fe02Smatt * The Regents of the University of California. All rights reserved. 66cf6fe02Smatt * 76cf6fe02Smatt * This code is derived from software contributed to Berkeley by 86cf6fe02Smatt * Ralph Campbell. 96cf6fe02Smatt * 106cf6fe02Smatt * Redistribution and use in source and binary forms, with or without 116cf6fe02Smatt * modification, are permitted provided that the following conditions 126cf6fe02Smatt * are met: 136cf6fe02Smatt * 1. Redistributions of source code must retain the above copyright 146cf6fe02Smatt * notice, this list of conditions and the following disclaimer. 156cf6fe02Smatt * 2. Redistributions in binary form must reproduce the above copyright 166cf6fe02Smatt * notice, this list of conditions and the following disclaimer in the 176cf6fe02Smatt * documentation and/or other materials provided with the distribution. 186cf6fe02Smatt * 3. Neither the name of the University nor the names of its contributors 196cf6fe02Smatt * may be used to endorse or promote products derived from this software 206cf6fe02Smatt * without specific prior written permission. 216cf6fe02Smatt * 226cf6fe02Smatt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 236cf6fe02Smatt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 246cf6fe02Smatt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 256cf6fe02Smatt * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 266cf6fe02Smatt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 276cf6fe02Smatt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 286cf6fe02Smatt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 296cf6fe02Smatt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 306cf6fe02Smatt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 316cf6fe02Smatt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 326cf6fe02Smatt * SUCH DAMAGE. 336cf6fe02Smatt */ 346cf6fe02Smatt 356cf6fe02Smatt#include "SYS.h" 366cf6fe02Smatt 376cf6fe02Smatt#if defined(LIBC_SCCS) && !defined(lint) 38*35c34461Smatt RCSID("$NetBSD: cerror.S,v 1.3 2015/03/27 23:23:14 matt Exp $") 396cf6fe02Smatt#endif /* LIBC_SCCS and not lint */ 406cf6fe02Smatt 416cf6fe02Smatt .protected _C_LABEL(__cerror) 426cf6fe02Smatt 436cf6fe02Smatt .globl _C_LABEL(__errno) 446cf6fe02SmattENTRY_NP(__cerror) 456cf6fe02Smatt#ifdef _REENTRANT 466cf6fe02Smatt addi sp, sp, -CALLFRAME_SIZ 476cf6fe02Smatt REG_S ra, CALLFRAME_RA(sp) # save return address 488a3081d2Smatt INT_S a0, CALLFRAME_S0(sp) # save errno value 496cf6fe02Smatt 506cf6fe02Smatt call PLT(_C_LABEL(__errno)) # locate address of errno 516cf6fe02Smatt 528a3081d2Smatt INT_L t0, CALLFRAME_S0(sp) # retrieve errno value 536cf6fe02Smatt REG_L ra, CALLFRAME_RA(sp) # retrieve return address 548a3081d2Smatt INT_S t0, 0(a0) # update errno value 556cf6fe02Smatt addi sp, sp, CALLFRAME_SIZ 566cf6fe02Smatt#else 578a3081d2Smatt aiupc a1, %hi(_C_LABEL(errno)) 58*35c34461Smatt INT_S a0, %lo(_C_LABEL(errno))(a1) 596cf6fe02Smatt#endif /* _REENTRANT */ 608a3081d2Smatt li a0, -1 618a3081d2Smatt li a1, -1 626cf6fe02Smatt ret 636cf6fe02SmattEND(__cerror) 64