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c2e0d56f5e
LLD has the -zbti-report=error argument to check if the BTI note is present when linking. To allow for this to be used when linking the kernel and modules: - Add the BTI note to the remaining assembly files - Mark ptrauth.c as protected by BTI - Disable -zbti-report for vmm hypervisor switching code as it's not used there. The linux64 module doesn't build with the flag as it includes vdso code that doesn't include the note. Reviewed by: imp, kib, emaste Sponsored by: Arm Ltd Differential Revision: https://reviews.freebsd.org/D45466
92 lines
2.9 KiB
ArmAsm
92 lines
2.9 KiB
ArmAsm
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2019 Ruslan Bukin <br@bsdpad.com>
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*
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* This software was developed by SRI International and the University of
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* Cambridge Computer Laboratory (Department of Computer Science and
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* Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the
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* DARPA SSITH research programme.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/elf_common.h>
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#include <machine/asm.h>
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.macro arm_smccc_1_0 insn
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ENTRY(arm_smccc_\insn)
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\insn #0
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ldr x4, [sp]
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cbz x4, 1f
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stp x0, x1, [x4, #16 * 0]
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stp x2, x3, [x4, #16 * 1]
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1: ret
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END(arm_smccc_\insn)
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.endm
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/*
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* int arm_smccc_*(register_t, register_t, register_t, register_t,
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* register_t, register_t, register_t, register_t,
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* struct arm_smccc_res *res)
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*/
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arm_smccc_1_0 hvc
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arm_smccc_1_0 smc
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.macro arm_smccc_1_2 insn
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ENTRY(arm_smccc_1_2_\insn)
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stp x1, x19, [sp, #-16]!
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mov x19, x0
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ldp x0, x1, [x19, #16 * 0]
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ldp x2, x3, [x19, #16 * 1]
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ldp x4, x5, [x19, #16 * 2]
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ldp x6, x7, [x19, #16 * 3]
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ldp x8, x9, [x19, #16 * 4]
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ldp x10, x11, [x19, #16 * 5]
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ldp x12, x13, [x19, #16 * 6]
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ldp x14, x15, [x19, #16 * 7]
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ldp x16, x17, [x19, #16 * 8]
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\insn #0
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ldr x19, [sp]
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cbz x19, 1f
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stp x0, x1, [x19, #16 * 0]
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stp x2, x3, [x19, #16 * 1]
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stp x4, x5, [x19, #16 * 2]
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stp x6, x7, [x19, #16 * 3]
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stp x8, x9, [x19, #16 * 4]
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stp x10, x11, [x19, #16 * 5]
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stp x12, x13, [x19, #16 * 6]
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stp x14, x15, [x19, #16 * 7]
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stp x16, x17, [x19, #16 * 8]
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1: ldp xzr, x19, [sp], #16
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ret
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END(arm_smccc_1_2_\insn)
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.endm
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/* int arm_smccc_1_2_*(const struct arm_smccc_1_2_regs *args,
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* struct arm_smccc_1_2_regs *res)
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*/
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arm_smccc_1_2 hvc
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arm_smccc_1_2 smc
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GNU_PROPERTY_AARCH64_FEATURE_1_NOTE(GNU_PROPERTY_AARCH64_FEATURE_1_VAL)
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