1 /* 2 * Copyright 2011-2023 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #ifndef OSSL_CRYPTO_ARM_ARCH_H 11 # define OSSL_CRYPTO_ARM_ARCH_H 12 13 # if !defined(__ARM_ARCH__) 14 # if defined(__CC_ARM) 15 # define __ARM_ARCH__ __TARGET_ARCH_ARM 16 # if defined(__BIG_ENDIAN) 17 # define __ARMEB__ 18 # else 19 # define __ARMEL__ 20 # endif 21 # elif defined(__GNUC__) 22 # if defined(__aarch64__) 23 # define __ARM_ARCH__ 8 24 /* 25 * Why doesn't gcc define __ARM_ARCH__? Instead it defines 26 * bunch of below macros. See all_architectures[] table in 27 * gcc/config/arm/arm.c. On a side note it defines 28 * __ARMEL__/__ARMEB__ for little-/big-endian. 29 */ 30 # elif defined(__ARM_ARCH) 31 # define __ARM_ARCH__ __ARM_ARCH 32 # elif defined(__ARM_ARCH_8A__) 33 # define __ARM_ARCH__ 8 34 # elif defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || \ 35 defined(__ARM_ARCH_7R__)|| defined(__ARM_ARCH_7M__) || \ 36 defined(__ARM_ARCH_7EM__) 37 # define __ARM_ARCH__ 7 38 # elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || \ 39 defined(__ARM_ARCH_6K__)|| defined(__ARM_ARCH_6M__) || \ 40 defined(__ARM_ARCH_6Z__)|| defined(__ARM_ARCH_6ZK__) || \ 41 defined(__ARM_ARCH_6T2__) 42 # define __ARM_ARCH__ 6 43 # elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) || \ 44 defined(__ARM_ARCH_5E__)|| defined(__ARM_ARCH_5TE__) || \ 45 defined(__ARM_ARCH_5TEJ__) 46 # define __ARM_ARCH__ 5 47 # elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__) 48 # define __ARM_ARCH__ 4 49 # else 50 # error "unsupported ARM architecture" 51 # endif 52 # endif 53 # endif 54 55 # if !defined(__ARM_MAX_ARCH__) 56 # define __ARM_MAX_ARCH__ __ARM_ARCH__ 57 # endif 58 59 # if __ARM_MAX_ARCH__<__ARM_ARCH__ 60 # error "__ARM_MAX_ARCH__ can't be less than __ARM_ARCH__" 61 # elif __ARM_MAX_ARCH__!=__ARM_ARCH__ 62 # if __ARM_ARCH__<7 && __ARM_MAX_ARCH__>=7 && defined(__ARMEB__) 63 # error "can't build universal big-endian binary" 64 # endif 65 # endif 66 67 # ifndef __ASSEMBLER__ 68 extern unsigned int OPENSSL_armcap_P; 69 extern unsigned int OPENSSL_arm_midr; 70 extern unsigned int OPENSSL_armv8_rsa_neonized; 71 # endif 72 73 # define ARMV7_NEON (1<<0) 74 # define ARMV7_TICK (1<<1) 75 # define ARMV8_AES (1<<2) 76 # define ARMV8_SHA1 (1<<3) 77 # define ARMV8_SHA256 (1<<4) 78 # define ARMV8_PMULL (1<<5) 79 # define ARMV8_SHA512 (1<<6) 80 # define ARMV8_CPUID (1<<7) 81 82 /* 83 * MIDR_EL1 system register 84 * 85 * 63___ _ ___32_31___ _ ___24_23_____20_19_____16_15__ _ __4_3_______0 86 * | | | | | | | 87 * |RES0 | Implementer | Variant | Arch | PartNum |Revision| 88 * |____ _ _____|_____ _ _____|_________|_______ _|____ _ ___|________| 89 * 90 */ 91 92 # define ARM_CPU_IMP_ARM 0x41 93 94 # define ARM_CPU_PART_CORTEX_A72 0xD08 95 # define ARM_CPU_PART_N1 0xD0C 96 97 # define MIDR_PARTNUM_SHIFT 4 98 # define MIDR_PARTNUM_MASK (0xfffU << MIDR_PARTNUM_SHIFT) 99 # define MIDR_PARTNUM(midr) \ 100 (((midr) & MIDR_PARTNUM_MASK) >> MIDR_PARTNUM_SHIFT) 101 102 # define MIDR_IMPLEMENTER_SHIFT 24 103 # define MIDR_IMPLEMENTER_MASK (0xffU << MIDR_IMPLEMENTER_SHIFT) 104 # define MIDR_IMPLEMENTER(midr) \ 105 (((midr) & MIDR_IMPLEMENTER_MASK) >> MIDR_IMPLEMENTER_SHIFT) 106 107 # define MIDR_ARCHITECTURE_SHIFT 16 108 # define MIDR_ARCHITECTURE_MASK (0xfU << MIDR_ARCHITECTURE_SHIFT) 109 # define MIDR_ARCHITECTURE(midr) \ 110 (((midr) & MIDR_ARCHITECTURE_MASK) >> MIDR_ARCHITECTURE_SHIFT) 111 112 # define MIDR_CPU_MODEL_MASK \ 113 (MIDR_IMPLEMENTER_MASK | \ 114 MIDR_PARTNUM_MASK | \ 115 MIDR_ARCHITECTURE_MASK) 116 117 # define MIDR_CPU_MODEL(imp, partnum) \ 118 (((imp) << MIDR_IMPLEMENTER_SHIFT) | \ 119 (0xfU << MIDR_ARCHITECTURE_SHIFT) | \ 120 ((partnum) << MIDR_PARTNUM_SHIFT)) 121 122 # define MIDR_IS_CPU_MODEL(midr, imp, partnum) \ 123 (((midr) & MIDR_CPU_MODEL_MASK) == MIDR_CPU_MODEL(imp, partnum)) 124 125 #if defined(__ASSEMBLER__) 126 127 /* 128 * Support macros for 129 * - Armv8.3-A Pointer Authentication and 130 * - Armv8.5-A Branch Target Identification 131 * features which require emitting a .note.gnu.property section with the 132 * appropriate architecture-dependent feature bits set. 133 * Read more: "ELF for the Arm® 64-bit Architecture" 134 */ 135 136 # if defined(__ARM_FEATURE_BTI_DEFAULT) && __ARM_FEATURE_BTI_DEFAULT == 1 137 # define GNU_PROPERTY_AARCH64_BTI (1 << 0) /* Has Branch Target Identification */ 138 # define AARCH64_VALID_CALL_TARGET hint #34 /* BTI 'c' */ 139 # else 140 # define GNU_PROPERTY_AARCH64_BTI 0 /* No Branch Target Identification */ 141 # define AARCH64_VALID_CALL_TARGET 142 # endif 143 144 # if defined(__ARM_FEATURE_PAC_DEFAULT) && \ 145 (__ARM_FEATURE_PAC_DEFAULT & 1) == 1 /* Signed with A-key */ 146 # define GNU_PROPERTY_AARCH64_POINTER_AUTH \ 147 (1 << 1) /* Has Pointer Authentication */ 148 # define AARCH64_SIGN_LINK_REGISTER hint #25 /* PACIASP */ 149 # define AARCH64_VALIDATE_LINK_REGISTER hint #29 /* AUTIASP */ 150 # elif defined(__ARM_FEATURE_PAC_DEFAULT) && \ 151 (__ARM_FEATURE_PAC_DEFAULT & 2) == 2 /* Signed with B-key */ 152 # define GNU_PROPERTY_AARCH64_POINTER_AUTH \ 153 (1 << 1) /* Has Pointer Authentication */ 154 # define AARCH64_SIGN_LINK_REGISTER hint #27 /* PACIBSP */ 155 # define AARCH64_VALIDATE_LINK_REGISTER hint #31 /* AUTIBSP */ 156 # else 157 # define GNU_PROPERTY_AARCH64_POINTER_AUTH 0 /* No Pointer Authentication */ 158 # if GNU_PROPERTY_AARCH64_BTI != 0 159 # define AARCH64_SIGN_LINK_REGISTER AARCH64_VALID_CALL_TARGET 160 # else 161 # define AARCH64_SIGN_LINK_REGISTER 162 # endif 163 # define AARCH64_VALIDATE_LINK_REGISTER 164 # endif 165 166 # if GNU_PROPERTY_AARCH64_POINTER_AUTH != 0 || GNU_PROPERTY_AARCH64_BTI != 0 167 .pushsection .note.gnu.property, "a"; 168 .balign 8; 169 .long 4; 170 .long 0x10; 171 .long 0x5; 172 .asciz "GNU"; 173 .long 0xc0000000; /* GNU_PROPERTY_AARCH64_FEATURE_1_AND */ 174 .long 4; 175 .long (GNU_PROPERTY_AARCH64_POINTER_AUTH | GNU_PROPERTY_AARCH64_BTI); 176 .long 0; 177 .popsection; 178 # endif 179 180 # endif /* defined __ASSEMBLER__ */ 181 182 #endif 183