1/*- 2 * Copyright (c) 2002 Peter Grehan. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26/* $NetBSD: cerror.S,v 1.5 2000/01/27 14:58:48 kleink Exp $ */ 27 28#include <machine/asm.h> 29#include "SYS.h" 30 31 .globl HIDENAME(cerror) 32 .globl CNAME(__error) 33 34 /* 35 * The __error() function is thread aware. For non-threaded 36 * programs and the initial thread in threaded programs, 37 * it returns a pointer to the global errno variable. 38 */ 39ENTRY_NOPROF(HIDENAME(cerror)) 40 mflr %r0 41 std %r0,16(%r1) /* save lr */ 42 stdu %r1,-64(%r1) /* allocate new stack frame */ 43 std %r31,48(%r1) 44 45 mr %r31,%r3 /* stash errval in callee-saved register */ 46 bl CNAME(__error) 47 nop 48 stw %r31,0(%r3) /* store errval into &errno */ 49 50 ld %r31,48(%r1) 51 ld %r1,0(%r1) 52 ld %r0,16(%r1) 53 mtlr %r0 54 li %r3,-1 55 li %r4,-1 56 blr 57END(HIDENAME(cerror)) 58 59 .section .note.GNU-stack,"",%progbits 60