freebsd-dev/sys/dev/psci/psci_arm.S
Ed Maste fa8d7c4417 arm: add .arch_extension sec for smc instruction
Clang 4.0 accepts the smc instruction with or without specifying
.arch_extension sec, but Clang 5.0 produces an error without it.

MFC after:	3 weeks
Sponsored by:	The FreeBSD Foundation
2017-06-18 00:08:38 +00:00

49 lines
1.7 KiB
ArmAsm

/*-
* Copyright (c) 2015 Andrew Turner
* All rights reserved.
*
* 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 <machine/asm.h>
__FBSDID("$FreeBSD$");
.arch_extension sec /* For smc */
.arch_extension virt /* For hvc */
/*
* int psci_hvc_despatch(register_t psci_fnid, register_t...)
*/
ENTRY(psci_hvc_despatch)
hvc #0
RET
END(psci_hvc_despatch)
/*
* int psci_smc_despatch(register_t psci_fnid, register_t...)
*/
ENTRY(psci_smc_despatch)
smc #0
RET
END(psci_hvc_despatch)