1 /* 2 * Copyright 2011-2021 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 # if __BYTE_ORDER__==__ORDER_BIG_ENDIAN__ 25 # define __ARMEB__ 26 # else 27 # define __ARMEL__ 28 # endif 29 /* 30 * Why doesn't gcc define __ARM_ARCH__? Instead it defines 31 * bunch of below macros. See all_architectures[] table in 32 * gcc/config/arm/arm.c. On a side note it defines 33 * __ARMEL__/__ARMEB__ for little-/big-endian. 34 */ 35 # elif defined(__ARM_ARCH) 36 # define __ARM_ARCH__ __ARM_ARCH 37 # elif defined(__ARM_ARCH_8A__) 38 # define __ARM_ARCH__ 8 39 # elif defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || \ 40 defined(__ARM_ARCH_7R__)|| defined(__ARM_ARCH_7M__) || \ 41 defined(__ARM_ARCH_7EM__) 42 # define __ARM_ARCH__ 7 43 # elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || \ 44 defined(__ARM_ARCH_6K__)|| defined(__ARM_ARCH_6M__) || \ 45 defined(__ARM_ARCH_6Z__)|| defined(__ARM_ARCH_6ZK__) || \ 46 defined(__ARM_ARCH_6T2__) 47 # define __ARM_ARCH__ 6 48 # elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) || \ 49 defined(__ARM_ARCH_5E__)|| defined(__ARM_ARCH_5TE__) || \ 50 defined(__ARM_ARCH_5TEJ__) 51 # define __ARM_ARCH__ 5 52 # elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__) 53 # define __ARM_ARCH__ 4 54 # else 55 # error "unsupported ARM architecture" 56 # endif 57 # endif 58 # endif 59 60 # if !defined(__ARM_MAX_ARCH__) 61 # define __ARM_MAX_ARCH__ __ARM_ARCH__ 62 # endif 63 64 # if __ARM_MAX_ARCH__<__ARM_ARCH__ 65 # error "__ARM_MAX_ARCH__ can't be less than __ARM_ARCH__" 66 # elif __ARM_MAX_ARCH__!=__ARM_ARCH__ 67 # if __ARM_ARCH__<7 && __ARM_MAX_ARCH__>=7 && defined(__ARMEB__) 68 # error "can't build universal big-endian binary" 69 # endif 70 # endif 71 72 # ifndef __ASSEMBLER__ 73 extern unsigned int OPENSSL_armcap_P; 74 extern unsigned int OPENSSL_arm_midr; 75 extern unsigned int OPENSSL_armv8_rsa_neonized; 76 # endif 77 78 # define ARMV7_NEON (1<<0) 79 # define ARMV7_TICK (1<<1) 80 # define ARMV8_AES (1<<2) 81 # define ARMV8_SHA1 (1<<3) 82 # define ARMV8_SHA256 (1<<4) 83 # define ARMV8_PMULL (1<<5) 84 # define ARMV8_SHA512 (1<<6) 85 # define ARMV8_CPUID (1<<7) 86 87 /* 88 * MIDR_EL1 system register 89 * 90 * 63___ _ ___32_31___ _ ___24_23_____20_19_____16_15__ _ __4_3_______0 91 * | | | | | | | 92 * |RES0 | Implementer | Variant | Arch | PartNum |Revision| 93 * |____ _ _____|_____ _ _____|_________|_______ _|____ _ ___|________| 94 * 95 */ 96 97 # define ARM_CPU_IMP_ARM 0x41 98 99 # define ARM_CPU_PART_CORTEX_A72 0xD08 100 # define ARM_CPU_PART_N1 0xD0C 101 102 # define MIDR_PARTNUM_SHIFT 4 103 # define MIDR_PARTNUM_MASK (0xfff << MIDR_PARTNUM_SHIFT) 104 # define MIDR_PARTNUM(midr) \ 105 (((midr) & MIDR_PARTNUM_MASK) >> MIDR_PARTNUM_SHIFT) 106 107 # define MIDR_IMPLEMENTER_SHIFT 24 108 # define MIDR_IMPLEMENTER_MASK (0xff << MIDR_IMPLEMENTER_SHIFT) 109 # define MIDR_IMPLEMENTER(midr) \ 110 (((midr) & MIDR_IMPLEMENTER_MASK) >> MIDR_IMPLEMENTER_SHIFT) 111 112 # define MIDR_ARCHITECTURE_SHIFT 16 113 # define MIDR_ARCHITECTURE_MASK (0xf << MIDR_ARCHITECTURE_SHIFT) 114 # define MIDR_ARCHITECTURE(midr) \ 115 (((midr) & MIDR_ARCHITECTURE_MASK) >> MIDR_ARCHITECTURE_SHIFT) 116 117 # define MIDR_CPU_MODEL_MASK \ 118 (MIDR_IMPLEMENTER_MASK | \ 119 MIDR_PARTNUM_MASK | \ 120 MIDR_ARCHITECTURE_MASK) 121 122 # define MIDR_CPU_MODEL(imp, partnum) \ 123 (((imp) << MIDR_IMPLEMENTER_SHIFT) | \ 124 (0xf << MIDR_ARCHITECTURE_SHIFT) | \ 125 ((partnum) << MIDR_PARTNUM_SHIFT)) 126 127 # define MIDR_IS_CPU_MODEL(midr, imp, partnum) \ 128 (((midr) & MIDR_CPU_MODEL_MASK) == MIDR_CPU_MODEL(imp, partnum)) 129 130 #if defined(__ASSEMBLER__) 131 132 /* 133 * Support macros for 134 * - Armv8.3-A Pointer Authentication and 135 * - Armv8.5-A Branch Target Identification 136 * features which require emitting a .note.gnu.property section with the 137 * appropriate architecture-dependent feature bits set. 138 * Read more: "ELF for the Arm® 64-bit Architecture" 139 */ 140 141 # if defined(__ARM_FEATURE_BTI_DEFAULT) && __ARM_FEATURE_BTI_DEFAULT == 1 142 # define GNU_PROPERTY_AARCH64_BTI (1 << 0) /* Has Branch Target Identification */ 143 # define AARCH64_VALID_CALL_TARGET hint #34 /* BTI 'c' */ 144 # else 145 # define GNU_PROPERTY_AARCH64_BTI 0 /* No Branch Target Identification */ 146 # define AARCH64_VALID_CALL_TARGET 147 # endif 148 149 # if defined(__ARM_FEATURE_PAC_DEFAULT) && \ 150 (__ARM_FEATURE_PAC_DEFAULT & 1) == 1 /* Signed with A-key */ 151 # define GNU_PROPERTY_AARCH64_POINTER_AUTH \ 152 (1 << 1) /* Has Pointer Authentication */ 153 # define AARCH64_SIGN_LINK_REGISTER hint #25 /* PACIASP */ 154 # define AARCH64_VALIDATE_LINK_REGISTER hint #29 /* AUTIASP */ 155 # elif defined(__ARM_FEATURE_PAC_DEFAULT) && \ 156 (__ARM_FEATURE_PAC_DEFAULT & 2) == 2 /* Signed with B-key */ 157 # define GNU_PROPERTY_AARCH64_POINTER_AUTH \ 158 (1 << 1) /* Has Pointer Authentication */ 159 # define AARCH64_SIGN_LINK_REGISTER hint #27 /* PACIBSP */ 160 # define AARCH64_VALIDATE_LINK_REGISTER hint #31 /* AUTIBSP */ 161 # else 162 # define GNU_PROPERTY_AARCH64_POINTER_AUTH 0 /* No Pointer Authentication */ 163 # if GNU_PROPERTY_AARCH64_BTI != 0 164 # define AARCH64_SIGN_LINK_REGISTER AARCH64_VALID_CALL_TARGET 165 # else 166 # define AARCH64_SIGN_LINK_REGISTER 167 # endif 168 # define AARCH64_VALIDATE_LINK_REGISTER 169 # endif 170 171 # if GNU_PROPERTY_AARCH64_POINTER_AUTH != 0 || GNU_PROPERTY_AARCH64_BTI != 0 172 .pushsection .note.gnu.property, "a"; 173 .balign 8; 174 .long 4; 175 .long 0x10; 176 .long 0x5; 177 .asciz "GNU"; 178 .long 0xc0000000; /* GNU_PROPERTY_AARCH64_FEATURE_1_AND */ 179 .long 4; 180 .long (GNU_PROPERTY_AARCH64_POINTER_AUTH | GNU_PROPERTY_AARCH64_BTI); 181 .long 0; 182 .popsection; 183 # endif 184 185 # endif /* defined __ASSEMBLER__ */ 186 187 #endif 188