1/* $NetBSD: cerror.S,v 1.13 2003/08/07 16:42:17 agc Exp $ */ 2 3/*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include "SYS.h" 36 37#if defined(LIBC_SCCS) && !defined(lint) 38 ASMSTR("from: @(#)cerror.s 8.1 (Berkeley) 6/16/93") 39 ASMSTR("$NetBSD: cerror.S,v 1.13 2003/08/07 16:42:17 agc Exp $") 40#endif /* LIBC_SCCS and not lint */ 41 42#ifdef _REENTRANT 43 .globl _C_LABEL(__errno) 44NESTED_NOPROFILE(__cerror, CALLFRAME_SIZ, ra) 45 PIC_PROLOGUE(__cerror, t9) 46 subu sp, sp, CALLFRAME_SIZ 47 .mask 0x80000000, (CALLFRAME_RA - CALLFRAME_SIZ) 48 sw ra, CALLFRAME_RA(sp) 49 sw v0, 12(sp) # save errno value 50 51 la t9, _C_LABEL(__errno) # locate address of errno 52 jalr t9 53 54 lw t0, 12(sp) 55 lw ra, CALLFRAME_RA(sp) 56 sw t0, 0(v0) # update errno value 57 addiu sp, sp, CALLFRAME_SIZ 58 li v0, -1 59 li v1, -1 60 j ra 61END(__cerror) 62#else 63 .globl _C_LABEL(errno) 64LEAF_NOPROFILE(__cerror) 65 .set noreorder 66#ifdef __ABICALLS__ 67 .cpload t9 68#endif 69 sw v0, _C_LABEL(errno) 70 li v0, -1 71 j ra 72 li v1, -1 73END(__cerror) 74#endif /* _REENTRANT */ 75