81 lines
1.2 KiB
C
81 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2019 Arm Limited
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* Original author: Dave Martin <Dave.Martin@arm.com>
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*/
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#ifndef ASSEMBLER_H
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#define ASSEMBLER_H
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#define NT_GNU_PROPERTY_TYPE_0 5
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#define GNU_PROPERTY_AARCH64_FEATURE_1_AND 0xc0000000
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/* Bits for GNU_PROPERTY_AARCH64_FEATURE_1_BTI */
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#define GNU_PROPERTY_AARCH64_FEATURE_1_BTI (1U << 0)
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#define GNU_PROPERTY_AARCH64_FEATURE_1_PAC (1U << 1)
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.macro startfn name:req
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.globl \name
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\name:
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.macro endfn
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.size \name, . - \name
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.type \name, @function
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.purgem endfn
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.endm
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.endm
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.macro emit_aarch64_feature_1_and
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.pushsection .note.gnu.property, "a"
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.align 3
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.long 2f - 1f
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.long 6f - 3f
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.long NT_GNU_PROPERTY_TYPE_0
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1: .string "GNU"
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2:
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.align 3
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3: .long GNU_PROPERTY_AARCH64_FEATURE_1_AND
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.long 5f - 4f
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4:
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#if BTI
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.long GNU_PROPERTY_AARCH64_FEATURE_1_PAC | \
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GNU_PROPERTY_AARCH64_FEATURE_1_BTI
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#else
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.long 0
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#endif
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5:
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.align 3
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6:
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.popsection
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.endm
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.macro paciasp
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hint 0x19
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.endm
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.macro autiasp
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hint 0x1d
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.endm
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.macro __bti_
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hint 0x20
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.endm
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.macro __bti_c
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hint 0x22
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.endm
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.macro __bti_j
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hint 0x24
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.endm
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.macro __bti_jc
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hint 0x26
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.endm
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.macro bti what=
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__bti_\what
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.endm
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#endif /* ! ASSEMBLER_H */
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