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