1/*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (C) 2018 Turing Robotic Industries Inc. 5 * Copyright (C) 2020 Andrew Turner <andrew@FreeBSD.org> 6 * Copyright (C) 2022 Dmitry Chagin <dchagin@FreeBSD.org> 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30/* 31 * arm64 Linux VDSO signal trampoline. 32 */ 33 34#include <machine/asm.h> 35 36#include <arm64/linux/linux_syscall.h> 37 38 .data 39 40 .globl linux_platform 41linux_platform: 42 .asciz "aarch64" 43 44 .text 45 46EENTRY(__kernel_rt_sigreturn) 47 nop /* This is what Linux calls a "Mysterious NOP". */ 48 49 .globl __user_rt_sigreturn 50__user_rt_sigreturn: 51 mov x8, #LINUX_SYS_linux_rt_sigreturn 52 svc #0 53EEND(__kernel_rt_sigreturn) 54