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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 | /* * Copyright (c) 2017 Apple Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #include <stdint.h> #include <string.h> #include <mach/machine.h> #if __x86_64__ #include <mach/mach.h> #include <mach/host_info.h> #include <mach/mach_host.h> #endif #include "Architecture.h" namespace mach_o { #if !TARGET_OS_EXCLAVEKIT Architecture::Architecture(const mach_header* mh) : _cputype(mh->cputype), _cpusubtype(mh->cpusubtype) { if ( (mh->magic == MH_CIGAM) || (mh->magic == MH_CIGAM_64) ) { _cputype = OSSwapBigToHostInt32(mh->cputype); _cpusubtype = OSSwapBigToHostInt32(mh->cpusubtype); } } Architecture::Architecture(const fat_arch* fh) : _cputype(OSSwapBigToHostInt32(fh->cputype)), _cpusubtype(OSSwapBigToHostInt32(fh->cpusubtype)) { } Architecture::Architecture(const fat_arch_64* fh) : _cputype(OSSwapBigToHostInt32(fh->cputype)), _cpusubtype(OSSwapBigToHostInt32(fh->cpusubtype)) { } bool Architecture::isBigEndian() const { // ppc[64] are only big endian arches supported return ((_cputype & ~CPU_ARCH_MASK) == CPU_TYPE_POWERPC); } void Architecture::set(mach_header& mh) const { if ( isBigEndian() ) { mh.cputype = OSSwapHostToBigInt32(_cputype); mh.cpusubtype = OSSwapHostToBigInt32(_cpusubtype); } else { mh.cputype = _cputype; mh.cpusubtype = _cpusubtype; } } void Architecture::set(fat_arch& fa) const { fa.cputype = OSSwapHostToBigInt32(_cputype); fa.cpusubtype = OSSwapHostToBigInt32(_cpusubtype); } void Architecture::set(fat_arch_64& fa) const { fa.cputype = OSSwapHostToBigInt32(_cputype); fa.cpusubtype = OSSwapHostToBigInt32(_cpusubtype); } bool Architecture::is64() const { return (_cputype & CPU_ARCH_ABI64); } Architecture Architecture::byName(std::string_view name) { if ( name == "x86_64" ) return x86_64; else if ( name == "x86_64h" ) return x86_64h; else if ( name == "i386" ) return i386; else if ( name == "arm64" ) return arm64; else if ( name == "arm64e" ) return arm64e; else if ( name == "arm64_32" ) return arm64_32; else if ( name == "armv6m" ) return armv6m; else if ( (name == "armv7k") || (name == "thumbv7k") ) return armv7k; else if ( (name == "armv7m") || (name == "thumbv7m") ) return armv7m; else if ( (name == "armv7em") || (name == "thumbv7em") ) return armv7em; else if ( (name == "armv7s") || (name == "thumbv7s") ) return armv7s; else if ( (name == "armv7") || (name == "thumbv7") ) return armv7; else if ( name == "ppc" ) return ppc; return invalid; } bool Architecture::operator==(const Architecture& other) const { if ( _cputype != other._cputype ) return false; if ( (_cpusubtype & ~CPU_SUBTYPE_MASK) != (other._cpusubtype & ~CPU_SUBTYPE_MASK) ) return false; // for arm64 high byte of cpu subtype must match if ( (_cputype == CPU_TYPE_ARM64) && (_cpusubtype != other._cpusubtype) ) return false; return true; } const char* Architecture::name() const { if ( *this == x86_64 ) return "x86_64"; else if ( *this == x86_64h ) return "x86_64h"; else if ( *this == i386 ) return "i386"; else if ( *this == arm64 ) return "arm64"; else if ( *this == arm64e ) return "arm64e"; else if ( *this == arm64_32 ) return "arm64_32"; else if ( *this == armv6m ) return "armv6m"; else if ( *this == armv7k ) return "armv7k"; else if ( *this == armv7m ) return "armv7m"; else if ( *this == armv7em ) return "armv7em"; else if ( *this == armv7s ) return "armv7s"; else if ( *this == armv7 ) return "armv7"; else if ( *this == arm64_alt ) return "arm64"; else if ( *this == arm64_32_alt ) return "arm64_32"; else if ( *this == arm64e_v1 ) return "arm64e.v1"; else if ( *this == arm64e_old ) return "arm64e.old"; else if ( *this == arm64e_kernel ) return "arm64e.kernel"; else if ( *this == ppc ) return "ppc"; return "unknown"; } const constinit Architecture Architecture::ppc( CPU_TYPE_POWERPC, CPU_SUBTYPE_POWERPC_ALL); const constinit Architecture Architecture::i386( CPU_TYPE_I386, CPU_SUBTYPE_I386_ALL); const constinit Architecture Architecture::x86_64( CPU_TYPE_X86_64, CPU_SUBTYPE_X86_64_ALL); const constinit Architecture Architecture::x86_64h( CPU_TYPE_X86_64, CPU_SUBTYPE_X86_64_H); const constinit Architecture Architecture::armv7( CPU_TYPE_ARM, CPU_SUBTYPE_ARM_V7); const constinit Architecture Architecture::armv7s( CPU_TYPE_ARM, CPU_SUBTYPE_ARM_V7S); const constinit Architecture Architecture::arm64( CPU_TYPE_ARM64, CPU_SUBTYPE_ARM64_ALL); const constinit Architecture Architecture::arm64e( CPU_TYPE_ARM64, CPU_SUBTYPE_ARM64E | 0x80000000); const constinit Architecture Architecture::arm64_32(CPU_TYPE_ARM64_32, CPU_SUBTYPE_ARM64_32_V8); const constinit Architecture Architecture::armv6m( CPU_TYPE_ARM, CPU_SUBTYPE_ARM_V6M); const constinit Architecture Architecture::armv7k( CPU_TYPE_ARM, CPU_SUBTYPE_ARM_V7K); const constinit Architecture Architecture::armv7m( CPU_TYPE_ARM, CPU_SUBTYPE_ARM_V7M); const constinit Architecture Architecture::armv7em( CPU_TYPE_ARM, CPU_SUBTYPE_ARM_V7EM); const constinit Architecture Architecture::invalid(0,0); // non-standard cpu subtypes const constinit Architecture Architecture::arm64_alt( CPU_TYPE_ARM64, CPU_SUBTYPE_ARM64_V8); const constinit Architecture Architecture::arm64_32_alt( CPU_TYPE_ARM64_32, CPU_SUBTYPE_ARM64_32_ALL); const constinit Architecture Architecture::arm64e_v1( CPU_TYPE_ARM64, CPU_SUBTYPE_ARM64E | 0x81000000); // future ABI version not supported const constinit Architecture Architecture::arm64e_old( CPU_TYPE_ARM64, CPU_SUBTYPE_ARM64E); // pre-ABI versioned const constinit Architecture Architecture::arm64e_kernel(CPU_TYPE_ARM64, CPU_SUBTYPE_ARM64E | 0xC0000000); #if __x86_64__ static bool isHaswell() { // FIXME: figure out a commpage way to check this struct host_basic_info info; mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT; mach_port_t hostPort = mach_host_self(); kern_return_t result = host_info(hostPort, HOST_BASIC_INFO, (host_info_t)&info, &count); mach_port_deallocate(mach_task_self(), hostPort); return (result == KERN_SUCCESS) && (info.cpu_subtype == CPU_SUBTYPE_X86_64_H); } #endif Architecture Architecture::current() { #if __arm64e__ return arm64e; #elif __arm64__ #if __LP64__ return arm64; #else return arm64_32; #endif #elif __x86_64__ return isHaswell() ? x86_64h : x86_64; #else #error unknown arch #endif } bool Architecture::usesArm64Instructions() const { // true for: arm64, arm64e, arm64_32, arm64e_v1, arm64e_old, arm64_alt, arm64_32_alt return (_cputype == CPU_TYPE_ARM64) || (_cputype == CPU_TYPE_ARM64_32); } bool Architecture::usesArm64AuthPointers() const { // true for: arm64e, arm64e_v1, arm64e_old return (_cputype == CPU_TYPE_ARM64) && ((_cpusubtype & ~CPU_SUBTYPE_MASK) == CPU_SUBTYPE_ARM64E); } bool Architecture::usesx86_64Instructions() const { // true for: x86_64 and x86_64h return (_cputype == CPU_TYPE_X86_64); } #endif // !TARGET_OS_EXCLAVEKIT } // namespace mach_o |