root/lib/libc/arch/aarch64/gen/sigsetjmp.S
/*      $OpenBSD: sigsetjmp.S,v 1.3 2022/12/24 10:49:19 kettenis Exp $  */
/*-
 * Copyright (c) 2014 The FreeBSD Foundation
 * All rights reserved.
 *
 * This software was developed by Andrew Turner under
 * sponsorship from the FreeBSD Foundation.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "DEFS.h"
#include <machine/setjmp.h>

ENTRY(sigsetjmp)
        cmp     x1, #0
        b.eq    _HIDDEN(_setjmp)
        b       _HIDDEN(setjmp)
END(sigsetjmp)

ENTRY(siglongjmp)
        /* Load the _setjmp magic */
        movz    x2, #(_JB_MAGIC__SETJMP & 0xffff)
        movk    x2, #(_JB_MAGIC__SETJMP >> 16), lsl #16
        ldr     x3, [x0]

        /* Check the magic */
        cmp     x2, x3
        b.eq    _HIDDEN(_longjmp)
        b       _HIDDEN(longjmp)
END(siglongjmp)