smccc_arm.S

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause
    3  *
    4  * Copyright (c) 2019 Ruslan Bukin <br@bsdpad.com>
    5  * Copyright (c) 2015 Andrew Turner
    6  *
    7  * This software was developed by SRI International and the University of
    8  * Cambridge Computer Laboratory (Department of Computer Science and
    9  * Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the
   10  * DARPA SSITH research programme.
   11  *
   12  * Redistribution and use in source and binary forms, with or without
   13  * modification, are permitted provided that the following conditions
   14  * are met:
   15  * 1. Redistributions of source code must retain the above copyright
   16  *    notice, this list of conditions and the following disclaimer.
   17  * 2. Redistributions in binary form must reproduce the above copyright
   18  *    notice, this list of conditions and the following disclaimer in the
   19  *    documentation and/or other materials provided with the distribution.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   31  * SUCH DAMAGE.
   32  */
   33 
   34 #include <machine/asm.h>
   35 __FBSDID("$FreeBSD$");
   36 
   37 .arch_extension sec     /* For smc */
   38 .arch_extension virt    /* For hvc */
   39 
   40 .macro arm_smccc_1_0    insn
   41 ENTRY(arm_smccc_\insn)
   42         mov     r12, sp
   43         push    {r4-r7}
   44         ldm     r12, {r4-r7}
   45         \insn   #0
   46         pop     {r4-r7}
   47         ldr     r12, [sp, #(4 * 4)]
   48         cmp     r12, #0
   49         beq     1f
   50         stm     r12, {r0-r3}
   51 1:      bx      lr
   52 END(arm_smccc_\insn)
   53 .endm
   54 
   55 /*
   56  * int arm_smccc_hvc(register_t, register_t, register_t, register_t,
   57  *     register_t, register_t, register_t, register_t,
   58  *     struct arm_smccc_res *res)
   59  */
   60 arm_smccc_1_0   hvc
   61 arm_smccc_1_0   smc

Cache object: 63db3866d31f26c5c815ef00fe642a56

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FreeBSD/Linux Kernel Cross Reference sys/dev/psci/smccc_arm.S

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sys/dev/psci/smccc_arm.S