1/* $NetBSD: cerror.S,v 1.7 2004/05/28 23:39:09 uwe Exp $ */ 2 3/*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 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 * from: @(#)cerror.s 5.1 (Berkeley) 4/23/90 35 */ 36 37#include <machine/asm.h> 38#if defined(SYSLIBC_SCCS) && !defined(lint) 39 RCSID("$NetBSD: cerror.S,v 1.7 2004/05/28 23:39:09 uwe Exp $") 40#endif /* SYSLIBC_SCCS and not lint */ 41 42#include "SYS.h" 43 44#ifdef _REENTRANT 45 46 47 .globl _C_LABEL(__errno) 48 49 .align 2 50cerror: 51 mov.l L__errno, r1 52 sts.l pr, @-sp 53#ifdef PIC 541: bsrf r1 55#else 56 jsr @r1 57#endif 58 mov.l r0, @-sp ! save error code 59 mov.l @sp+, r2 ! restore error code 60 lds.l @sp+, pr 61 mov.l r2, @r0 62 mov #-1, r1 63 rts 64 mov #-1, r0 65 66 .align 2 67L__errno: 68#ifdef PIC 69 .long _C_LABEL(__errno) - (1b + 4) 70#else 71 .long _C_LABEL(__errno) 72#endif 73 74#else /* !_REENTRANT */ 75 76 77 .globl _C_LABEL(errno) 78 79 .align 2 80cerror: 81#ifdef PIC 82 mov r0, r2 83 mova L_GOT, r0 84 mov.l L_GOT, r1 85 add r0, r1 86 mov.l L_errno, r0 87 mov.l @(r0, r1), r1 88 mov.l r2, @r1 89#else 90 mov.l L_errno, r1 91 mov.l r0, @r1 92#endif 93 mov #-1, r0 94 rts 95 mov #-1, r1 96 97 .align 2 98#ifdef PIC 99L_GOT: .long _GLOBAL_OFFSET_TABLE_ 100L_errno: .long _C_LABEL(errno)@GOT 101#else 102L_errno: .long _C_LABEL(errno) 103#endif 104 105#endif /* !_REENTRANT */ 106