linux_locore.asm

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    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  * $FreeBSD$
   30  */
   31 
   32 /*
   33  * arm64 Linux VDSO signal trampoline.
   34  */
   35 
   36 #include <machine/asm.h>
   37 
   38 #include <arm64/linux/linux_syscall.h>
   39 
   40         .data
   41 
   42         .globl linux_platform
   43 linux_platform:
   44         .asciz "aarch64"
   45 
   46         .text
   47 
   48         nop     /* This is what Linux calls a "Mysterious NOP". */
   49 EENTRY(__kernel_rt_sigreturn)
   50         mov     x8, #LINUX_SYS_linux_rt_sigreturn
   51         svc     #0
   52 EEND(__kernel_rt_sigreturn)
   53 
   54 EENTRY(linux_vdso_sigcode)
   55         blr     x8
   56 
   57         mov     x8, #LINUX_SYS_linux_rt_sigreturn
   58         svc     #0
   59 EEND(linux_vdso_sigcode)

Cache object: 5788e6453aa59ad8777996b95066e806

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FreeBSD/Linux Kernel Cross Reference sys/arm64/linux/linux_locore.asm

FreeBSD/Linux Kernel Cross Reference
sys/arm64/linux/linux_locore.asm