xref: /freebsd/lib/libc/aarch64/gen/_ctx_start.S (revision fd5aaf2ea0178b03aa93c35245053247e5d3840c)
1249d5c7aSAndrew Turner/*-
2249d5c7aSAndrew Turner * Copyright (c) 2015 The FreeBSD Foundation
3249d5c7aSAndrew Turner *
4249d5c7aSAndrew Turner * This software was developed by Andrew Turner under
5249d5c7aSAndrew Turner * sponsorship from the FreeBSD Foundation.
6249d5c7aSAndrew Turner *
7249d5c7aSAndrew Turner * Redistribution and use in source and binary forms, with or without
8249d5c7aSAndrew Turner * modification, are permitted provided that the following conditions
9249d5c7aSAndrew Turner * are met:
10249d5c7aSAndrew Turner * 1. Redistributions of source code must retain the above copyright
11249d5c7aSAndrew Turner *    notice, this list of conditions and the following disclaimer.
12249d5c7aSAndrew Turner * 2. Redistributions in binary form must reproduce the above copyright
13249d5c7aSAndrew Turner *    notice, this list of conditions and the following disclaimer in the
14249d5c7aSAndrew Turner *    documentation and/or other materials provided with the distribution.
15249d5c7aSAndrew Turner *
16249d5c7aSAndrew Turner * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17249d5c7aSAndrew Turner * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18249d5c7aSAndrew Turner * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19249d5c7aSAndrew Turner * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20249d5c7aSAndrew Turner * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21249d5c7aSAndrew Turner * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22249d5c7aSAndrew Turner * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23249d5c7aSAndrew Turner * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24249d5c7aSAndrew Turner * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25249d5c7aSAndrew Turner * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26249d5c7aSAndrew Turner * SUCH DAMAGE.
27249d5c7aSAndrew Turner */
28249d5c7aSAndrew Turner
29249d5c7aSAndrew Turner#include <machine/asm.h>
30*fd5aaf2eSAndrew Turner#include <sys/elf_common.h>
31*fd5aaf2eSAndrew Turner
32249d5c7aSAndrew TurnerENTRY(_ctx_start)
33249d5c7aSAndrew Turner	blr	x19		/* Call func from makecontext */
34249d5c7aSAndrew Turner	mov	x0, x20		/* Load ucp saved in makecontext */
35249d5c7aSAndrew Turner	bl	_C_LABEL(ctx_done)
36249d5c7aSAndrew Turner	bl	_C_LABEL(abort)
37249d5c7aSAndrew TurnerEND(_ctx_start)
38*fd5aaf2eSAndrew Turner
39*fd5aaf2eSAndrew TurnerGNU_PROPERTY_AARCH64_FEATURE_1_NOTE(GNU_PROPERTY_AARCH64_FEATURE_1_VAL)
40