1 /* 2 * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2016, 2017 SAP SE. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #include "precompiled.hpp" 27 #include "asm/assembler.inline.hpp" 28 #include "compiler/disassembler.hpp" 29 #include "code/compiledIC.hpp" 30 #include "memory/resourceArea.hpp" 31 #include "prims/jvm.h" 32 #include "runtime/java.hpp" 33 #include "runtime/stubCodeGenerator.hpp" 34 #include "vm_version_s390.hpp" 35 36 # include <sys/sysinfo.h> 37 38 bool VM_Version::_is_determine_features_test_running = false; 39 40 unsigned long VM_Version::_features[_features_buffer_len] = {0, 0, 0, 0}; 41 unsigned long VM_Version::_cipher_features[_features_buffer_len] = {0, 0, 0, 0}; 42 unsigned long VM_Version::_msgdigest_features[_features_buffer_len] = {0, 0, 0, 0}; 43 unsigned int VM_Version::_nfeatures = 0; 44 unsigned int VM_Version::_ncipher_features = 0; 45 unsigned int VM_Version::_nmsgdigest_features = 0; 46 unsigned int VM_Version::_Dcache_lineSize = 256; 47 unsigned int VM_Version::_Icache_lineSize = 256; 48 49 static const char* z_gen[] = {" ", "G1", "G2", "G3", "G4", "G5", "G6", "G7" }; 50 static const char* z_machine[] = {" ", "2064", "2084", "2094", "2097", "2817", " ", "2964" }; 51 static const char* z_name[] = {" ", "z900", "z990", "z9 EC", "z10 EC", "z196 EC", "ec12", "z13" }; 52 53 void VM_Version::initialize() { 54 determine_features(); // Get processor capabilities. 55 set_features_string(); // Set a descriptive feature indication. 56 57 if (Verbose) { 58 print_features(); 59 } 60 61 intx cache_line_size = Dcache_lineSize(0); 62 63 MaxVectorSize = 8; 64 65 if (has_PrefetchRaw()) { 66 if (FLAG_IS_DEFAULT(AllocatePrefetchStyle)) { // not preset 67 // 0 = no prefetch. 68 // 1 = Prefetch instructions for each allocation. 69 // 2 = Use TLAB watermark to gate allocation prefetch. 70 AllocatePrefetchStyle = 1; 71 } 72 73 if (AllocatePrefetchStyle > 0) { // Prefetching turned on at all? 74 // Distance to prefetch ahead of allocation pointer. 75 if (FLAG_IS_DEFAULT(AllocatePrefetchDistance) || (AllocatePrefetchDistance < 0)) { // not preset 76 AllocatePrefetchDistance = 0; 77 } 78 79 // Number of lines to prefetch ahead of allocation pointer. 80 if (FLAG_IS_DEFAULT(AllocatePrefetchLines) || (AllocatePrefetchLines <= 0)) { // not preset 81 AllocatePrefetchLines = 3; 82 } 83 84 // Step size in bytes of sequential prefetch instructions. 85 if (FLAG_IS_DEFAULT(AllocatePrefetchStepSize) || (AllocatePrefetchStepSize <= 0)) { // not preset 86 FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size); 87 } else if (AllocatePrefetchStepSize < cache_line_size) { 88 FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size); 89 } else { 90 FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size); 91 } 92 } else { 93 FLAG_SET_DEFAULT(AllocatePrefetchStyle, 0); 94 AllocatePrefetchDistance = 0; 95 AllocatePrefetchLines = 0; 96 // Can't be zero. Will SIGFPE during constraints checking. 97 FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size); 98 } 99 100 } else { 101 FLAG_SET_DEFAULT(AllocatePrefetchStyle, 0); 102 AllocatePrefetchDistance = 0; 103 AllocatePrefetchLines = 0; 104 // Can't be zero. Will SIGFPE during constraints checking. 105 FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size); 106 } 107 108 // TODO: 109 // On z/Architecture, cache line size is significantly large (256 bytes). Do we really need 110 // to keep contended members that far apart? Performance tests are required. 111 if (FLAG_IS_DEFAULT(ContendedPaddingWidth) && (cache_line_size > ContendedPaddingWidth)) { 112 ContendedPaddingWidth = cache_line_size; 113 } 114 115 // On z/Architecture, the CRC32/CRC32C intrinsics are implemented "by hand". 116 // TODO: Provide implementation based on the vector instructions available from z13. 117 // Note: The CHECKSUM instruction, which has been there since the very beginning 118 // (of z/Architecture), computes "some kind of" a checksum. 119 // It has nothing to do with the CRC32 algorithm. 120 if (FLAG_IS_DEFAULT(UseCRC32Intrinsics)) { 121 FLAG_SET_DEFAULT(UseCRC32Intrinsics, true); 122 } 123 if (FLAG_IS_DEFAULT(UseCRC32CIntrinsics)) { 124 FLAG_SET_DEFAULT(UseCRC32CIntrinsics, true); 125 } 126 127 // TODO: Provide implementation. 128 if (UseAdler32Intrinsics) { 129 warning("Adler32Intrinsics not available on this CPU."); 130 FLAG_SET_DEFAULT(UseAdler32Intrinsics, false); 131 } 132 133 // On z/Architecture, we take UseAES as the general switch to enable/disable the AES intrinsics. 134 // The specific, and yet to be defined, switches UseAESxxxIntrinsics will then be set 135 // depending on the actual machine capabilities. 136 // Explicitly setting them via CmdLine option takes precedence, of course. 137 // TODO: UseAESIntrinsics must be made keylength specific. 138 // As of March 2015 and Java8, only AES128 is supported by the Java Cryptographic Extensions. 139 // Therefore, UseAESIntrinsics is of minimal use at the moment. 140 if (FLAG_IS_DEFAULT(UseAES) && has_Crypto_AES()) { 141 FLAG_SET_DEFAULT(UseAES, true); 142 } 143 if (UseAES && !has_Crypto_AES()) { 144 warning("AES instructions are not available on this CPU"); 145 FLAG_SET_DEFAULT(UseAES, false); 146 } 147 if (UseAES) { 148 if (FLAG_IS_DEFAULT(UseAESIntrinsics)) { 149 FLAG_SET_DEFAULT(UseAESIntrinsics, true); 150 } 151 } 152 if (UseAESIntrinsics && !has_Crypto_AES()) { 153 warning("AES intrinsics are not available on this CPU"); 154 FLAG_SET_DEFAULT(UseAESIntrinsics, false); 155 } 156 if (UseAESIntrinsics && !UseAES) { 157 warning("AES intrinsics require UseAES flag to be enabled. Intrinsics will be disabled."); 158 FLAG_SET_DEFAULT(UseAESIntrinsics, false); 159 } 160 161 // TODO: implement AES/CTR intrinsics 162 if (UseAESCTRIntrinsics) { 163 warning("AES/CTR intrinsics are not available on this CPU"); 164 FLAG_SET_DEFAULT(UseAESCTRIntrinsics, false); 165 } 166 167 // TODO: implement GHASH intrinsics 168 if (UseGHASHIntrinsics) { 169 warning("GHASH intrinsics are not available on this CPU"); 170 FLAG_SET_DEFAULT(UseGHASHIntrinsics, false); 171 } 172 173 if (FLAG_IS_DEFAULT(UseFMA)) { 174 FLAG_SET_DEFAULT(UseFMA, true); 175 } 176 177 // On z/Architecture, we take UseSHA as the general switch to enable/disable the SHA intrinsics. 178 // The specific switches UseSHAxxxIntrinsics will then be set depending on the actual 179 // machine capabilities. 180 // Explicitly setting them via CmdLine option takes precedence, of course. 181 if (FLAG_IS_DEFAULT(UseSHA) && has_Crypto_SHA()) { 182 FLAG_SET_DEFAULT(UseSHA, true); 183 } 184 if (UseSHA && !has_Crypto_SHA()) { 185 warning("SHA instructions are not available on this CPU"); 186 FLAG_SET_DEFAULT(UseSHA, false); 187 } 188 if (UseSHA && has_Crypto_SHA1()) { 189 if (FLAG_IS_DEFAULT(UseSHA1Intrinsics)) { 190 FLAG_SET_DEFAULT(UseSHA1Intrinsics, true); 191 } 192 } else if (UseSHA1Intrinsics) { 193 warning("Intrinsics for SHA-1 crypto hash functions not available on this CPU."); 194 FLAG_SET_DEFAULT(UseSHA1Intrinsics, false); 195 } 196 if (UseSHA && has_Crypto_SHA256()) { 197 if (FLAG_IS_DEFAULT(UseSHA256Intrinsics)) { 198 FLAG_SET_DEFAULT(UseSHA256Intrinsics, true); 199 } 200 } else if (UseSHA256Intrinsics) { 201 warning("Intrinsics for SHA-224 and SHA-256 crypto hash functions not available on this CPU."); 202 FLAG_SET_DEFAULT(UseSHA256Intrinsics, false); 203 } 204 if (UseSHA && has_Crypto_SHA512()) { 205 if (FLAG_IS_DEFAULT(UseSHA512Intrinsics)) { 206 FLAG_SET_DEFAULT(UseSHA512Intrinsics, true); 207 } 208 } else if (UseSHA512Intrinsics) { 209 warning("Intrinsics for SHA-384 and SHA-512 crypto hash functions not available on this CPU."); 210 FLAG_SET_DEFAULT(UseSHA512Intrinsics, false); 211 } 212 213 if (FLAG_IS_DEFAULT(UseMultiplyToLenIntrinsic)) { 214 FLAG_SET_DEFAULT(UseMultiplyToLenIntrinsic, true); 215 } 216 if (FLAG_IS_DEFAULT(UseMontgomeryMultiplyIntrinsic)) { 217 FLAG_SET_DEFAULT(UseMontgomeryMultiplyIntrinsic, true); 218 } 219 if (FLAG_IS_DEFAULT(UseMontgomerySquareIntrinsic)) { 220 FLAG_SET_DEFAULT(UseMontgomerySquareIntrinsic, true); 221 } 222 if (FLAG_IS_DEFAULT(UsePopCountInstruction)) { 223 FLAG_SET_DEFAULT(UsePopCountInstruction, true); 224 } 225 226 // z/Architecture supports 8-byte compare-exchange operations 227 // (see Atomic::cmpxchg) 228 // and 'atomic long memory ops' (see Unsafe_GetLongVolatile). 229 _supports_cx8 = true; 230 231 _supports_atomic_getadd4 = VM_Version::has_LoadAndALUAtomicV1(); 232 _supports_atomic_getadd8 = VM_Version::has_LoadAndALUAtomicV1(); 233 234 // z/Architecture supports unaligned memory accesses. 235 // Performance penalty is negligible. An additional tick or so 236 // is lost if the accessed data spans a cache line boundary. 237 // Unaligned accesses are not atomic, of course. 238 if (FLAG_IS_DEFAULT(UseUnalignedAccesses)) { 239 FLAG_SET_DEFAULT(UseUnalignedAccesses, true); 240 } 241 } 242 243 244 void VM_Version::set_features_string() { 245 246 unsigned int ambiguity = 0; 247 if (is_z13()) { 248 _features_string = "System z G7-z13 (LDISP_fast, ExtImm, PCrel Load/Store, CmpB, Cond Load/Store, Interlocked Update, TxM, VectorInstr)"; 249 ambiguity++; 250 } 251 if (is_ec12()) { 252 _features_string = "System z G6-EC12 (LDISP_fast, ExtImm, PCrel Load/Store, CmpB, Cond Load/Store, Interlocked Update, TxM)"; 253 ambiguity++; 254 } 255 if (is_z196()) { 256 _features_string = "System z G5-z196 (LDISP_fast, ExtImm, PCrel Load/Store, CmpB, Cond Load/Store, Interlocked Update)"; 257 ambiguity++; 258 } 259 if (is_z10()) { 260 _features_string = "System z G4-z10 (LDISP_fast, ExtImm, PCrel Load/Store, CmpB)"; 261 ambiguity++; 262 } 263 if (is_z9()) { 264 _features_string = "System z G3-z9 (LDISP_fast, ExtImm), out-of-support as of 2016-04-01"; 265 ambiguity++; 266 } 267 if (is_z990()) { 268 _features_string = "System z G2-z990 (LDISP_fast), out-of-support as of 2014-07-01"; 269 ambiguity++; 270 } 271 if (is_z900()) { 272 _features_string = "System z G1-z900 (LDISP), out-of-support as of 2014-07-01"; 273 ambiguity++; 274 } 275 276 if (ambiguity == 0) { 277 _features_string = "z/Architecture (unknown generation)"; 278 } else if (ambiguity > 1) { 279 tty->print_cr("*** WARNING *** Ambiguous z/Architecture detection, ambiguity = %d", ambiguity); 280 tty->print_cr(" oldest detected generation is %s", _features_string); 281 _features_string = "z/Architecture (ambiguous detection)"; 282 } 283 284 if (has_Crypto_AES()) { 285 char buf[256]; 286 assert(strlen(_features_string) + 4 + 3*4 + 1 < sizeof(buf), "increase buffer size"); 287 jio_snprintf(buf, sizeof(buf), "%s aes%s%s%s", // String 'aes' must be surrounded by spaces so that jtreg tests recognize it. 288 _features_string, 289 has_Crypto_AES128() ? " 128" : "", 290 has_Crypto_AES192() ? " 192" : "", 291 has_Crypto_AES256() ? " 256" : ""); 292 _features_string = os::strdup(buf); 293 } 294 295 if (has_Crypto_SHA()) { 296 char buf[256]; 297 assert(strlen(_features_string) + 4 + 2 + 2*4 + 6 + 1 < sizeof(buf), "increase buffer size"); 298 // String 'sha1' etc must be surrounded by spaces so that jtreg tests recognize it. 299 jio_snprintf(buf, sizeof(buf), "%s %s%s%s%s", 300 _features_string, 301 has_Crypto_SHA1() ? " sha1" : "", 302 has_Crypto_SHA256() ? " sha256" : "", 303 has_Crypto_SHA512() ? " sha512" : "", 304 has_Crypto_GHASH() ? " ghash" : ""); 305 if (has_Crypto_AES()) { os::free((void *)_features_string); } 306 _features_string = os::strdup(buf); 307 } 308 } 309 310 // featureBuffer - bit array indicating availability of various features 311 // featureNum - bit index of feature to be tested 312 // Featurenum < 0 requests test for any nonzero bit in featureBuffer. 313 // bufLen - length of featureBuffer in bits 314 bool VM_Version::test_feature_bit(unsigned long* featureBuffer, int featureNum, unsigned int bufLen) { 315 assert(bufLen > 0, "buffer len must be positive"); 316 assert((bufLen & 0x0007) == 0, "unaligned buffer len"); 317 assert(((intptr_t)featureBuffer&0x0007) == 0, "unaligned feature buffer"); 318 if (featureNum < 0) { 319 // Any bit set at all? 320 bool anyBit = false; 321 for (size_t i = 0; i < bufLen/(8*sizeof(long)); i++) { 322 anyBit = anyBit || (featureBuffer[i] != 0); 323 } 324 return anyBit; 325 } else { 326 assert((unsigned int)featureNum < bufLen, "feature index out of range"); 327 unsigned char* byteBuffer = (unsigned char*)featureBuffer; 328 int byteIndex = featureNum/(8*sizeof(char)); 329 int bitIndex = featureNum%(8*sizeof(char)); 330 // Indexed bit set? 331 return (byteBuffer[byteIndex] & (1U<<(7-bitIndex))) != 0; 332 } 333 } 334 335 void VM_Version::print_features_internal(const char* text, bool print_anyway) { 336 tty->print_cr("%s %s", text, features_string()); 337 tty->print("%s", text); 338 for (unsigned int i = 0; i < _nfeatures; i++) { 339 tty->print(" 0x%16.16lx", _features[i]); 340 } 341 tty->cr(); 342 343 if (Verbose || print_anyway) { 344 // z900 345 if (has_long_displacement() ) tty->print_cr("available: %s", "LongDispFacility"); 346 // z990 347 if (has_long_displacement_fast() ) tty->print_cr("available: %s", "LongDispFacilityHighPerf"); 348 if (has_ETF2() && has_ETF3() ) tty->print_cr("available: %s", "ETF2 and ETF3"); 349 if (has_Crypto() ) tty->print_cr("available: %s", "CryptoFacility"); 350 // z9 351 if (has_extended_immediate() ) tty->print_cr("available: %s", "ExtImmedFacility"); 352 if (has_StoreFacilityListExtended()) tty->print_cr("available: %s", "StoreFacilityListExtended"); 353 if (has_StoreClockFast() ) tty->print_cr("available: %s", "StoreClockFast"); 354 if (has_ETF2Enhancements() ) tty->print_cr("available: %s", "ETF2 Enhancements"); 355 if (has_ETF3Enhancements() ) tty->print_cr("available: %s", "ETF3 Enhancements"); 356 if (has_HFPUnnormalized() ) tty->print_cr("available: %s", "HFPUnnormalizedFacility"); 357 if (has_HFPMultiplyAndAdd() ) tty->print_cr("available: %s", "HFPMultiplyAndAddFacility"); 358 // z10 359 if (has_ParsingEnhancements() ) tty->print_cr("available: %s", "Parsing Enhancements"); 360 if (has_ExtractCPUtime() ) tty->print_cr("available: %s", "ExtractCPUTime"); 361 if (has_CompareSwapStore() ) tty->print_cr("available: %s", "CompareSwapStore"); 362 if (has_GnrlInstrExtensions() ) tty->print_cr("available: %s", "General Instruction Extensions"); 363 if (has_CompareBranch() ) tty->print_cr(" available: %s", "Compare and Branch"); 364 if (has_CompareTrap() ) tty->print_cr(" available: %s", "Compare and Trap"); 365 if (has_RelativeLoadStore() ) tty->print_cr(" available: %s", "Relative Load/Store"); 366 if (has_MultiplySingleImm32() ) tty->print_cr(" available: %s", "MultiplySingleImm32"); 367 if (has_Prefetch() ) tty->print_cr(" available: %s", "Prefetch"); 368 if (has_MoveImmToMem() ) tty->print_cr(" available: %s", "Direct Moves Immediate to Memory"); 369 if (has_MemWithImmALUOps() ) tty->print_cr(" available: %s", "Direct ALU Ops Memory .op. Immediate"); 370 if (has_ExtractCPUAttributes() ) tty->print_cr(" available: %s", "Extract CPU Atributes"); 371 if (has_ExecuteExtensions() ) tty->print_cr("available: %s", "ExecuteExtensions"); 372 if (has_FPSupportEnhancements() ) tty->print_cr("available: %s", "FPSupportEnhancements"); 373 if (has_DecimalFloatingPoint() ) tty->print_cr("available: %s", "DecimalFloatingPoint"); 374 // z196 375 if (has_DistinctOpnds() ) tty->print_cr("available: %s", "Distinct Operands"); 376 if (has_InterlockedAccessV1() ) tty->print_cr(" available: %s", "InterlockedAccess V1 (fast)"); 377 if (has_PopCount() ) tty->print_cr(" available: %s", "PopCount"); 378 if (has_LoadStoreConditional() ) tty->print_cr(" available: %s", "LoadStoreConditional"); 379 if (has_HighWordInstr() ) tty->print_cr(" available: %s", "HighWord Instructions"); 380 if (has_FastSync() ) tty->print_cr(" available: %s", "FastSync (bcr 14,0)"); 381 if (has_AtomicMemWithImmALUOps() ) tty->print_cr("available: %s", "Atomic Direct ALU Ops Memory .op. Immediate"); 382 if (has_FPExtensions() ) tty->print_cr("available: %s", "Floatingpoint Extensions"); 383 if (has_CryptoExt3() ) tty->print_cr("available: %s", "Crypto Extensions 3"); 384 if (has_CryptoExt4() ) tty->print_cr("available: %s", "Crypto Extensions 4"); 385 // EC12 386 if (has_MiscInstrExt() ) tty->print_cr("available: %s", "Miscelaneous Instruction Extensions"); 387 if (has_ExecutionHint() ) tty->print_cr(" available: %s", "Execution Hints (branch prediction)"); 388 if (has_ProcessorAssist() ) tty->print_cr(" available: %s", "Processor Assists"); 389 if (has_LoadAndTrap() ) tty->print_cr(" available: %s", "Load and Trap"); 390 if (has_TxMem() ) tty->print_cr("available: %s", "Transactional Memory"); 391 if (has_InterlockedAccessV2() ) tty->print_cr(" available: %s", "InterlockedAccess V2 (fast)"); 392 if (has_DFPZonedConversion() ) tty->print_cr(" available: %s", "DFP Zoned Conversions"); 393 // z13 394 if (has_LoadStoreConditional2() ) tty->print_cr("available: %s", "Load/Store Conditional 2"); 395 if (has_CryptoExt5() ) tty->print_cr("available: %s", "Crypto Extensions 5"); 396 if (has_DFPPackedConversion() ) tty->print_cr("available: %s", "DFP Packed Conversions"); 397 if (has_VectorFacility() ) tty->print_cr("available: %s", "Vector Facility"); 398 // test switches 399 if (has_TestFeature1Impl() ) tty->print_cr("available: %s", "TestFeature1Impl"); 400 if (has_TestFeature2Impl() ) tty->print_cr("available: %s", "TestFeature2Impl"); 401 if (has_TestFeature4Impl() ) tty->print_cr("available: %s", "TestFeature4Impl"); 402 if (has_TestFeature8Impl() ) tty->print_cr("available: %s", "TestFeature8Impl"); 403 404 if (has_Crypto()) { 405 tty->cr(); 406 tty->print_cr("detailed availability of %s capabilities:", "CryptoFacility"); 407 if (test_feature_bit(&_cipher_features[0], -1, 2*Cipher::_featureBits)) { 408 tty->cr(); 409 tty->print_cr(" available: %s", "Message Cipher Functions"); 410 } 411 if (test_feature_bit(&_cipher_features[0], -1, (int)Cipher::_featureBits)) { 412 tty->print_cr(" available Crypto Features of KM (Cipher Message):"); 413 for (unsigned int i = 0; i < Cipher::_featureBits; i++) { 414 if (test_feature_bit(&_cipher_features[0], i, (int)Cipher::_featureBits)) { 415 switch (i) { 416 case Cipher::_Query: tty->print_cr(" available: KM Query"); break; 417 case Cipher::_DEA: tty->print_cr(" available: KM DEA"); break; 418 case Cipher::_TDEA128: tty->print_cr(" available: KM TDEA-128"); break; 419 case Cipher::_TDEA192: tty->print_cr(" available: KM TDEA-192"); break; 420 case Cipher::_EncryptedDEA: tty->print_cr(" available: KM Encrypted DEA"); break; 421 case Cipher::_EncryptedDEA128: tty->print_cr(" available: KM Encrypted DEA-128"); break; 422 case Cipher::_EncryptedDEA192: tty->print_cr(" available: KM Encrypted DEA-192"); break; 423 case Cipher::_AES128: tty->print_cr(" available: KM AES-128"); break; 424 case Cipher::_AES192: tty->print_cr(" available: KM AES-192"); break; 425 case Cipher::_AES256: tty->print_cr(" available: KM AES-256"); break; 426 case Cipher::_EnccryptedAES128: tty->print_cr(" available: KM Encrypted-AES-128"); break; 427 case Cipher::_EnccryptedAES192: tty->print_cr(" available: KM Encrypted-AES-192"); break; 428 case Cipher::_EnccryptedAES256: tty->print_cr(" available: KM Encrypted-AES-256"); break; 429 case Cipher::_XTSAES128: tty->print_cr(" available: KM XTS-AES-128"); break; 430 case Cipher::_XTSAES256: tty->print_cr(" available: KM XTS-AES-256"); break; 431 case Cipher::_EncryptedXTSAES128: tty->print_cr(" available: KM XTS-Encrypted-AES-128"); break; 432 case Cipher::_EncryptedXTSAES256: tty->print_cr(" available: KM XTS-Encrypted-AES-256"); break; 433 default: tty->print_cr(" available: unknown KM code %d", i); break; 434 } 435 } 436 } 437 } 438 if (test_feature_bit(&_cipher_features[2], -1, (int)Cipher::_featureBits)) { 439 tty->print_cr(" available Crypto Features of KMC (Cipher Message with Chaining):"); 440 for (unsigned int i = 0; i < Cipher::_featureBits; i++) { 441 if (test_feature_bit(&_cipher_features[2], i, (int)Cipher::_featureBits)) { 442 switch (i) { 443 case Cipher::_Query: tty->print_cr(" available: KMC Query"); break; 444 case Cipher::_DEA: tty->print_cr(" available: KMC DEA"); break; 445 case Cipher::_TDEA128: tty->print_cr(" available: KMC TDEA-128"); break; 446 case Cipher::_TDEA192: tty->print_cr(" available: KMC TDEA-192"); break; 447 case Cipher::_EncryptedDEA: tty->print_cr(" available: KMC Encrypted DEA"); break; 448 case Cipher::_EncryptedDEA128: tty->print_cr(" available: KMC Encrypted DEA-128"); break; 449 case Cipher::_EncryptedDEA192: tty->print_cr(" available: KMC Encrypted DEA-192"); break; 450 case Cipher::_AES128: tty->print_cr(" available: KMC AES-128"); break; 451 case Cipher::_AES192: tty->print_cr(" available: KMC AES-192"); break; 452 case Cipher::_AES256: tty->print_cr(" available: KMC AES-256"); break; 453 case Cipher::_EnccryptedAES128: tty->print_cr(" available: KMC Encrypted-AES-128"); break; 454 case Cipher::_EnccryptedAES192: tty->print_cr(" available: KMC Encrypted-AES-192"); break; 455 case Cipher::_EnccryptedAES256: tty->print_cr(" available: KMC Encrypted-AES-256"); break; 456 case Cipher::_PRNG: tty->print_cr(" available: KMC PRNG"); break; 457 default: tty->print_cr(" available: unknown KMC code %d", i); break; 458 } 459 } 460 } 461 } 462 463 if (test_feature_bit(&_msgdigest_features[0], -1, 2*MsgDigest::_featureBits)) { 464 tty->cr(); 465 tty->print_cr(" available: %s", "Message Digest Functions for SHA"); 466 } 467 if (test_feature_bit(&_msgdigest_features[0], -1, (int)MsgDigest::_featureBits)) { 468 tty->print_cr(" available Features of KIMD (Msg Digest):"); 469 for (unsigned int i = 0; i < MsgDigest::_featureBits; i++) { 470 if (test_feature_bit(&_msgdigest_features[0], i, (int)MsgDigest::_featureBits)) { 471 switch (i) { 472 case MsgDigest::_Query: tty->print_cr(" available: KIMD Query"); break; 473 case MsgDigest::_SHA1: tty->print_cr(" available: KIMD SHA-1"); break; 474 case MsgDigest::_SHA256: tty->print_cr(" available: KIMD SHA-256"); break; 475 case MsgDigest::_SHA512: tty->print_cr(" available: KIMD SHA-512"); break; 476 case MsgDigest::_GHASH: tty->print_cr(" available: KIMD GHASH"); break; 477 default: tty->print_cr(" available: unknown code %d", i); break; 478 } 479 } 480 } 481 } 482 if (test_feature_bit(&_msgdigest_features[2], -1, (int)MsgDigest::_featureBits)) { 483 tty->print_cr(" available Features of KLMD (Msg Digest):"); 484 for (unsigned int i = 0; i < MsgDigest::_featureBits; i++) { 485 if (test_feature_bit(&_msgdigest_features[2], i, (int)MsgDigest::_featureBits)) { 486 switch (i) { 487 case MsgDigest::_Query: tty->print_cr(" available: KLMD Query"); break; 488 case MsgDigest::_SHA1: tty->print_cr(" available: KLMD SHA-1"); break; 489 case MsgDigest::_SHA256: tty->print_cr(" available: KLMD SHA-256"); break; 490 case MsgDigest::_SHA512: tty->print_cr(" available: KLMD SHA-512"); break; 491 default: tty->print_cr(" available: unknown code %d", i); break; 492 } 493 } 494 } 495 } 496 } 497 if (ContendedPaddingWidth > 0) { 498 tty->cr(); 499 tty->print_cr("ContendedPaddingWidth " INTX_FORMAT, ContendedPaddingWidth); 500 } 501 } 502 } 503 504 void VM_Version::print_features() { 505 print_features_internal("Version:"); 506 } 507 508 void VM_Version::reset_features(bool reset) { 509 if (reset) { 510 for (unsigned int i = 0; i < _features_buffer_len; i++) { 511 VM_Version::_features[i] = 0; 512 } 513 } 514 } 515 516 void VM_Version::set_features_z900(bool reset) { 517 reset_features(reset); 518 519 set_has_long_displacement(); 520 set_has_ETF2(); 521 } 522 523 void VM_Version::set_features_z990(bool reset) { 524 reset_features(reset); 525 526 set_features_z900(false); 527 set_has_ETF3(); 528 set_has_long_displacement_fast(); 529 set_has_HFPMultiplyAndAdd(); 530 } 531 532 void VM_Version::set_features_z9(bool reset) { 533 reset_features(reset); 534 535 set_features_z990(false); 536 set_has_StoreFacilityListExtended(); 537 // set_has_Crypto(); // Do not set, crypto features must be retrieved separately. 538 set_has_ETF2Enhancements(); 539 set_has_ETF3Enhancements(); 540 set_has_extended_immediate(); 541 set_has_StoreClockFast(); 542 set_has_HFPUnnormalized(); 543 } 544 545 void VM_Version::set_features_z10(bool reset) { 546 reset_features(reset); 547 548 set_features_z9(false); 549 set_has_CompareSwapStore(); 550 set_has_RelativeLoadStore(); 551 set_has_CompareBranch(); 552 set_has_CompareTrap(); 553 set_has_MultiplySingleImm32(); 554 set_has_Prefetch(); 555 set_has_MoveImmToMem(); 556 set_has_MemWithImmALUOps(); 557 set_has_ExecuteExtensions(); 558 set_has_FPSupportEnhancements(); 559 set_has_DecimalFloatingPoint(); 560 set_has_ExtractCPUtime(); 561 set_has_CryptoExt3(); 562 } 563 564 void VM_Version::set_features_z196(bool reset) { 565 reset_features(reset); 566 567 set_features_z10(false); 568 set_has_InterlockedAccessV1(); 569 set_has_PopCount(); 570 set_has_LoadStoreConditional(); 571 set_has_HighWordInstr(); 572 set_has_FastSync(); 573 set_has_FPExtensions(); 574 set_has_DistinctOpnds(); 575 set_has_CryptoExt4(); 576 } 577 578 void VM_Version::set_features_ec12(bool reset) { 579 reset_features(reset); 580 581 set_features_z196(false); 582 set_has_MiscInstrExt(); 583 set_has_InterlockedAccessV2(); 584 set_has_LoadAndALUAtomicV2(); 585 set_has_TxMem(); 586 } 587 588 void VM_Version::set_features_z13(bool reset) { 589 reset_features(reset); 590 591 set_features_ec12(false); 592 set_has_LoadStoreConditional2(); 593 set_has_CryptoExt5(); 594 set_has_VectorFacility(); 595 } 596 597 void VM_Version::set_features_from(const char* march) { 598 bool err = false; 599 bool prt = false; 600 601 if ((march != NULL) && (march[0] != '\0')) { 602 const int buf_len = 16; 603 const int hdr_len = 5; 604 char buf[buf_len]; 605 if (strlen(march) >= hdr_len) { 606 memcpy(buf, march, hdr_len); 607 buf[hdr_len] = '\00'; 608 } else { 609 buf[0] = '\00'; 610 } 611 612 if (!strcmp(march, "z900")) { 613 set_features_z900(); 614 } else if (!strcmp(march, "z990")) { 615 set_features_z990(); 616 } else if (!strcmp(march, "z9")) { 617 set_features_z9(); 618 } else if (!strcmp(march, "z10")) { 619 set_features_z10(); 620 } else if (!strcmp(march, "z196")) { 621 set_features_z196(); 622 } else if (!strcmp(march, "ec12")) { 623 set_features_ec12(); 624 } else if (!strcmp(march, "z13")) { 625 set_features_z13(); 626 } else if (!strcmp(buf, "ztest")) { 627 assert(!has_TestFeaturesImpl(), "possible facility list flag conflict"); 628 if (strlen(march) > hdr_len) { 629 int itest = 0; 630 if ((strlen(march)-hdr_len) >= buf_len) err = true; 631 if (!err) { 632 memcpy(buf, &march[hdr_len], strlen(march)-hdr_len); 633 buf[strlen(march)-hdr_len] = '\00'; 634 for (size_t i = 0; !err && (i < strlen(buf)); i++) { 635 itest = itest*10 + buf[i]-'0'; 636 err = err || ((buf[i]-'0') < 0) || ((buf[i]-'0') > 9) || (itest > 15); 637 } 638 } 639 if (!err) { 640 prt = true; 641 if (itest & 0x01) { set_has_TestFeature1Impl(); } 642 if (itest & 0x02) { set_has_TestFeature2Impl(); } 643 if (itest & 0x04) { set_has_TestFeature4Impl(); } 644 if (itest & 0x08) { set_has_TestFeature8Impl(); } 645 } 646 } else { 647 prt = true; 648 set_has_TestFeature1Impl(); 649 set_has_TestFeature2Impl(); 650 set_has_TestFeature4Impl(); 651 set_has_TestFeature8Impl(); 652 } 653 } else { 654 err = true; 655 } 656 if (!err) { 657 set_features_string(); 658 if (prt || PrintAssembly) { 659 print_features_internal("CPU Version as set by cmdline option:", prt); 660 } 661 } else { 662 tty->print_cr("***Warning: Unsupported ProcessorArchitecture: %s, internal settings left undisturbed.", march); 663 } 664 } 665 666 } 667 668 static long (*getFeatures)(unsigned long*, int, int) = NULL; 669 670 void VM_Version::set_getFeatures(address entryPoint) { 671 if (getFeatures == NULL) { 672 getFeatures = (long(*)(unsigned long*, int, int))entryPoint; 673 } 674 } 675 676 long VM_Version::call_getFeatures(unsigned long* buffer, int buflen, int functionCode) { 677 VM_Version::_is_determine_features_test_running = true; 678 long functionResult = (*getFeatures)(buffer, buflen, functionCode); 679 VM_Version::_is_determine_features_test_running = false; 680 return functionResult; 681 } 682 683 // Helper function for "extract cache attribute" instruction. 684 int VM_Version::calculate_ECAG_functionCode(unsigned int attributeIndication, 685 unsigned int levelIndication, 686 unsigned int typeIndication) { 687 return (attributeIndication<<4) | (levelIndication<<1) | typeIndication; 688 } 689 690 void VM_Version::determine_features() { 691 692 const int cbuf_size = _code_buffer_len; 693 const int buf_len = _features_buffer_len; 694 695 // Allocate code buffer space for the detection code. 696 ResourceMark rm; 697 CodeBuffer cbuf("determine CPU features", cbuf_size, 0); 698 MacroAssembler* a = new MacroAssembler(&cbuf); 699 700 // Emit code. 701 set_getFeatures(a->pc()); 702 address code = a->pc(); 703 704 // Try STFLE. Possible INVOP will cause defaults to be used. 705 Label getFEATURES; 706 Label getCPUFEATURES; // fcode = -1 (cache) 707 Label getCIPHERFEATURES; // fcode = -2 (cipher) 708 Label getMSGDIGESTFEATURES; // fcode = -3 (SHA) 709 Label getVECTORFEATURES; // fcode = -4 (OS support for vector instructions) 710 Label errRTN; 711 a->z_ltgfr(Z_R0, Z_ARG2); // Buf len to r0 and test. 712 a->z_brl(getFEATURES); // negative -> Get machine features not covered by facility list. 713 a->z_lghi(Z_R1,0); 714 a->z_brz(errRTN); // zero -> Function code currently not used, indicate "aborted". 715 716 a->z_aghi(Z_R0, -1); 717 a->z_stfle(0, Z_ARG1); 718 a->z_lg(Z_R1, 0, Z_ARG1); // Get first DW of facility list. 719 a->z_lgr(Z_RET, Z_R0); // Calculate rtn value for success. 720 a->z_la(Z_RET, 1, Z_RET); 721 a->z_brnz(errRTN); // Instr failed if non-zero CC. 722 a->z_ltgr(Z_R1, Z_R1); // Instr failed if first DW == 0. 723 a->z_bcr(Assembler::bcondNotZero, Z_R14); // Successful return. 724 725 a->bind(errRTN); 726 a->z_lngr(Z_RET, Z_RET); 727 a->z_ltgr(Z_R1, Z_R1); 728 a->z_bcr(Assembler::bcondNotZero, Z_R14); // Return "buffer too small". 729 a->z_xgr(Z_RET, Z_RET); 730 a->z_br(Z_R14); // Return "operation aborted". 731 732 a->bind(getFEATURES); 733 a->z_cghi(Z_R0, -1); // -1: Extract CPU attributes, currently: cache layout only. 734 a->z_bre(getCPUFEATURES); 735 a->z_cghi(Z_R0, -2); // -2: Extract detailed crypto capabilities (cipher instructions). 736 a->z_bre(getCIPHERFEATURES); 737 a->z_cghi(Z_R0, -3); // -3: Extract detailed crypto capabilities (msg digest instructions). 738 a->z_bre(getMSGDIGESTFEATURES); 739 a->z_cghi(Z_R0, -4); // -4: Verify vector instruction availability (OS support). 740 a->z_bre(getVECTORFEATURES); 741 742 a->z_xgr(Z_RET, Z_RET); // Not a valid function code. 743 a->z_br(Z_R14); // Return "operation aborted". 744 745 // Try KIMD/KLMD query function to get details about msg digest (secure hash, SHA) instructions. 746 a->bind(getMSGDIGESTFEATURES); 747 a->z_lghi(Z_R0,(int)MsgDigest::_Query); // query function code 748 a->z_lgr(Z_R1,Z_R2); // param block addr, 2*16 bytes min size 749 a->z_kimd(Z_R2,Z_R2); // Get available KIMD functions (bit pattern in param blk). 750 a->z_la(Z_R1,16,Z_R1); // next param block addr 751 a->z_klmd(Z_R2,Z_R2); // Get available KLMD functions (bit pattern in param blk). 752 a->z_lghi(Z_RET,4); 753 a->z_br(Z_R14); 754 755 // Try KM/KMC query function to get details about crypto instructions. 756 a->bind(getCIPHERFEATURES); 757 a->z_lghi(Z_R0,(int)Cipher::_Query); // query function code 758 a->z_lgr(Z_R1,Z_R2); // param block addr, 2*16 bytes min size (KIMD/KLMD output) 759 a->z_km(Z_R2,Z_R2); // get available KM functions 760 a->z_la(Z_R1,16,Z_R1); // next param block addr 761 a->z_kmc(Z_R2,Z_R2); // get available KMC functions 762 a->z_lghi(Z_RET,4); 763 a->z_br(Z_R14); 764 765 // Use EXTRACT CPU ATTRIBUTE instruction to get information about cache layout. 766 a->bind(getCPUFEATURES); 767 a->z_xgr(Z_R0,Z_R0); // as recommended in instruction documentation 768 a->z_ecag(Z_RET,Z_R0,0,Z_ARG3); // Extract information as requested by Z_ARG1 contents. 769 a->z_br(Z_R14); 770 771 // Use a vector instruction to verify OS support. Will fail with SIGFPE if OS support is missing. 772 a->bind(getVECTORFEATURES); 773 a->z_vtm(Z_V0,Z_V0); // non-destructive vector instruction. Will cause SIGFPE if not supported. 774 a->z_br(Z_R14); 775 776 address code_end = a->pc(); 777 a->flush(); 778 779 // Print the detection code. 780 bool printVerbose = Verbose || PrintAssembly || PrintStubCode; 781 if (printVerbose) { 782 ttyLocker ttyl; 783 tty->print_cr("Decoding CPU feature detection stub at " INTPTR_FORMAT " before execution:", p2i(code)); 784 tty->print_cr("Stub length is %ld bytes, codebuffer reserves %d bytes, %ld bytes spare.", 785 code_end-code, cbuf_size, cbuf_size-(code_end-code)); 786 787 // Use existing decode function. This enables the [Code] format which is needed to DecodeErrorFile. 788 Disassembler::decode((u_char*)code, (u_char*)code_end, tty); 789 } 790 791 // Prepare for detection code execution and clear work buffer. 792 _nfeatures = 0; 793 _ncipher_features = 0; 794 unsigned long buffer[buf_len]; 795 796 for (int i = 0; i < buf_len; i++) { 797 buffer[i] = 0L; 798 } 799 800 // execute code 801 // Illegal instructions will be replaced by 0 in signal handler. 802 // In case of problems, call_getFeatures will return a not-positive result. 803 long used_len = call_getFeatures(buffer, buf_len, 0); 804 805 bool ok; 806 if (used_len == 1) { 807 ok = true; 808 } else if (used_len > 1) { 809 unsigned int used_lenU = (unsigned int)used_len; 810 ok = true; 811 for (unsigned int i = 1; i < used_lenU; i++) { 812 ok = ok && (buffer[i] == 0L); 813 } 814 if (printVerbose && !ok) { 815 bool compact = false; 816 tty->print_cr("Note: feature list has %d (i.e. more than one) array elements.", used_lenU); 817 if (compact) { 818 tty->print("non-zero feature list elements:"); 819 for (unsigned int i = 0; i < used_lenU; i++) { 820 tty->print(" [%d]: 0x%16.16lx", i, buffer[i]); 821 } 822 tty->cr(); 823 } else { 824 for (unsigned int i = 0; i < used_lenU; i++) { 825 tty->print_cr("non-zero feature list[%d]: 0x%16.16lx", i, buffer[i]); 826 } 827 } 828 829 if (compact) { 830 tty->print_cr("Active features (compact view):"); 831 for (unsigned int k = 0; k < used_lenU; k++) { 832 tty->print_cr(" buffer[%d]:", k); 833 for (unsigned int j = k*sizeof(long); j < (k+1)*sizeof(long); j++) { 834 bool line = false; 835 for (unsigned int i = j*8; i < (j+1)*8; i++) { 836 bool bit = test_feature_bit(buffer, i, used_lenU*sizeof(long)*8); 837 if (bit) { 838 if (!line) { 839 tty->print(" byte[%d]:", j); 840 line = true; 841 } 842 tty->print(" [%3.3d]", i); 843 } 844 } 845 if (line) { 846 tty->cr(); 847 } 848 } 849 } 850 } else { 851 tty->print_cr("Active features (full view):"); 852 for (unsigned int k = 0; k < used_lenU; k++) { 853 tty->print_cr(" buffer[%d]:", k); 854 for (unsigned int j = k*sizeof(long); j < (k+1)*sizeof(long); j++) { 855 tty->print(" byte[%d]:", j); 856 for (unsigned int i = j*8; i < (j+1)*8; i++) { 857 bool bit = test_feature_bit(buffer, i, used_lenU*sizeof(long)*8); 858 if (bit) { 859 tty->print(" [%3.3d]", i); 860 } else { 861 tty->print(" "); 862 } 863 } 864 tty->cr(); 865 } 866 } 867 } 868 } 869 ok = true; 870 } else { // No features retrieved if we reach here. Buffer too short or instr not available. 871 if (used_len < 0) { 872 ok = false; 873 if (printVerbose) { 874 tty->print_cr("feature list buffer[%d] too short, required: buffer[%ld]", buf_len, -used_len); 875 } 876 } else { 877 if (printVerbose) { 878 tty->print_cr("feature list could not be retrieved. Running on z900 or z990? Trying to find out..."); 879 } 880 used_len = call_getFeatures(buffer, 0, 0); // Must provide at least two DW buffer elements!!!! 881 882 ok = used_len > 0; 883 if (ok) { 884 if (buffer[1]*10 < buffer[0]) { 885 set_features_z900(); 886 } else { 887 set_features_z990(); 888 } 889 890 if (printVerbose) { 891 tty->print_cr("Note: high-speed long displacement test used %ld iterations.", used_len); 892 tty->print_cr(" Positive displacement loads took %8.8lu microseconds.", buffer[1]); 893 tty->print_cr(" Negative displacement loads took %8.8lu microseconds.", buffer[0]); 894 if (has_long_displacement_fast()) { 895 tty->print_cr(" assuming high-speed long displacement IS available."); 896 } else { 897 tty->print_cr(" assuming high-speed long displacement is NOT available."); 898 } 899 } 900 } else { 901 if (printVerbose) { 902 tty->print_cr("Note: high-speed long displacement test was not successful."); 903 tty->print_cr(" assuming long displacement is NOT available."); 904 } 905 } 906 return; // Do not copy buffer to _features, no test for cipher features. 907 } 908 } 909 910 if (ok) { 911 // Fill features buffer. 912 // Clear work buffer. 913 for (int i = 0; i < buf_len; i++) { 914 _features[i] = buffer[i]; 915 _cipher_features[i] = 0; 916 _msgdigest_features[i] = 0; 917 buffer[i] = 0L; 918 } 919 _nfeatures = used_len; 920 } else { 921 for (int i = 0; i < buf_len; i++) { 922 _features[i] = 0; 923 _cipher_features[i] = 0; 924 _msgdigest_features[i] = 0; 925 buffer[i] = 0L; 926 } 927 _nfeatures = 0; 928 } 929 930 if (has_VectorFacility()) { 931 // Verify that feature can actually be used. OS support required. 932 call_getFeatures(buffer, -4, 0); 933 if (printVerbose) { 934 ttyLocker ttyl; 935 if (has_VectorFacility()) { 936 tty->print_cr(" Vector Facility has been verified to be supported by OS"); 937 } else { 938 tty->print_cr(" Vector Facility has been disabled - not supported by OS"); 939 } 940 } 941 } 942 943 // Extract Crypto Facility details. 944 if (has_Crypto()) { 945 // Get cipher features. 946 used_len = call_getFeatures(buffer, -2, 0); 947 for (int i = 0; i < buf_len; i++) { 948 _cipher_features[i] = buffer[i]; 949 } 950 _ncipher_features = used_len; 951 952 // Get msg digest features. 953 used_len = call_getFeatures(buffer, -3, 0); 954 for (int i = 0; i < buf_len; i++) { 955 _msgdigest_features[i] = buffer[i]; 956 } 957 _nmsgdigest_features = used_len; 958 } 959 960 static int levelProperties[_max_cache_levels]; // All property indications per level. 961 static int levelScope[_max_cache_levels]; // private/shared 962 static const char* levelScopeText[4] = {"No cache ", 963 "CPU private", 964 "shared ", 965 "reserved "}; 966 967 static int levelType[_max_cache_levels]; // D/I/mixed 968 static const char* levelTypeText[4] = {"separate D and I caches", 969 "I cache only ", 970 "D-cache only ", 971 "combined D/I cache "}; 972 973 static unsigned int levelReserved[_max_cache_levels]; // reserved property bits 974 static unsigned int levelLineSize[_max_cache_levels]; 975 static unsigned int levelTotalSize[_max_cache_levels]; 976 static unsigned int levelAssociativity[_max_cache_levels]; 977 978 979 // Extract Cache Layout details. 980 if (has_ExtractCPUAttributes() && printVerbose) { // For information only, as of now. 981 bool lineSize_mismatch; 982 bool print_something; 983 long functionResult; 984 unsigned int attributeIndication = 0; // 0..15 985 unsigned int levelIndication = 0; // 0..8 986 unsigned int typeIndication = 0; // 0..1 (D-Cache, I-Cache) 987 int functionCode = calculate_ECAG_functionCode(attributeIndication, levelIndication, typeIndication); 988 989 // Get cache topology. 990 functionResult = call_getFeatures(buffer, -1, functionCode); 991 992 for (unsigned int i = 0; i < _max_cache_levels; i++) { 993 if (functionResult > 0) { 994 int shiftVal = 8*(_max_cache_levels-(i+1)); 995 levelProperties[i] = (functionResult & (0xffUL<<shiftVal)) >> shiftVal; 996 levelReserved[i] = (levelProperties[i] & 0xf0) >> 4; 997 levelScope[i] = (levelProperties[i] & 0x0c) >> 2; 998 levelType[i] = (levelProperties[i] & 0x03); 999 } else { 1000 levelProperties[i] = 0; 1001 levelReserved[i] = 0; 1002 levelScope[i] = 0; 1003 levelType[i] = 0; 1004 } 1005 levelLineSize[i] = 0; 1006 levelTotalSize[i] = 0; 1007 levelAssociativity[i] = 0; 1008 } 1009 1010 tty->cr(); 1011 tty->print_cr("------------------------------------"); 1012 tty->print_cr("--- Cache Topology Information ---"); 1013 tty->print_cr("------------------------------------"); 1014 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) { 1015 tty->print_cr(" Cache Level %d: <scope> %s | <type> %s", 1016 i+1, levelScopeText[levelScope[i]], levelTypeText[levelType[i]]); 1017 } 1018 1019 // Get D-cache details per level. 1020 _Dcache_lineSize = 0; 1021 lineSize_mismatch = false; 1022 print_something = false; 1023 typeIndication = 0; // 0..1 (D-Cache, I-Cache) 1024 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) { 1025 if ((levelType[i] == 0) || (levelType[i] == 2)) { 1026 print_something = true; 1027 1028 // Get cache line size of level i. 1029 attributeIndication = 1; 1030 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); 1031 levelLineSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); 1032 1033 // Get cache total size of level i. 1034 attributeIndication = 2; 1035 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); 1036 levelTotalSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); 1037 1038 // Get cache associativity of level i. 1039 attributeIndication = 3; 1040 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); 1041 levelAssociativity[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); 1042 1043 _Dcache_lineSize = _Dcache_lineSize == 0 ? levelLineSize[i] : _Dcache_lineSize; 1044 lineSize_mismatch = lineSize_mismatch || (_Dcache_lineSize != levelLineSize[i]); 1045 } else { 1046 levelLineSize[i] = 0; 1047 } 1048 } 1049 1050 if (print_something) { 1051 tty->cr(); 1052 tty->print_cr("------------------------------------"); 1053 tty->print_cr("--- D-Cache Detail Information ---"); 1054 tty->print_cr("------------------------------------"); 1055 if (lineSize_mismatch) { 1056 tty->print_cr("WARNING: D-Cache line size mismatch!"); 1057 } 1058 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) { 1059 if (levelLineSize[i] > 0) { 1060 tty->print_cr(" D-Cache Level %d: line size = %4d, total size = %6dKB, associativity = %2d", 1061 i+1, levelLineSize[i], levelTotalSize[i]/(int)K, levelAssociativity[i]); 1062 } 1063 } 1064 } 1065 1066 // Get I-cache details per level. 1067 _Icache_lineSize = 0; 1068 lineSize_mismatch = false; 1069 print_something = false; 1070 typeIndication = 1; // 0..1 (D-Cache, I-Cache) 1071 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) { 1072 if ((levelType[i] == 0) || (levelType[i] == 1)) { 1073 print_something = true; 1074 1075 // Get cache line size of level i. 1076 attributeIndication = 1; 1077 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); 1078 levelLineSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); 1079 1080 // Get cache total size of level i. 1081 attributeIndication = 2; 1082 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); 1083 levelTotalSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); 1084 1085 // Get cache associativity of level i. 1086 attributeIndication = 3; 1087 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); 1088 levelAssociativity[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); 1089 1090 _Icache_lineSize = _Icache_lineSize == 0 ? levelLineSize[i] : _Icache_lineSize; 1091 lineSize_mismatch = lineSize_mismatch || (_Icache_lineSize != levelLineSize[i]); 1092 } else { 1093 levelLineSize[i] = 0; 1094 } 1095 } 1096 1097 if (print_something) { 1098 tty->cr(); 1099 tty->print_cr("------------------------------------"); 1100 tty->print_cr("--- I-Cache Detail Information ---"); 1101 tty->print_cr("------------------------------------"); 1102 if (lineSize_mismatch) { 1103 tty->print_cr("WARNING: I-Cache line size mismatch!"); 1104 } 1105 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) { 1106 if (levelLineSize[i] > 0) { 1107 tty->print_cr(" I-Cache Level %d: line size = %4d, total size = %6dKB, associativity = %2d", 1108 i+1, levelLineSize[i], levelTotalSize[i]/(int)K, levelAssociativity[i]); 1109 } 1110 } 1111 } 1112 1113 // Get D/I-cache details per level. 1114 lineSize_mismatch = false; 1115 print_something = false; 1116 typeIndication = 0; // 0..1 (D-Cache, I-Cache) 1117 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) { 1118 if (levelType[i] == 3) { 1119 print_something = true; 1120 1121 // Get cache line size of level i. 1122 attributeIndication = 1; 1123 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); 1124 levelLineSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); 1125 1126 // Get cache total size of level i. 1127 attributeIndication = 2; 1128 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); 1129 levelTotalSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); 1130 1131 // Get cache associativity of level i. 1132 attributeIndication = 3; 1133 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); 1134 levelAssociativity[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); 1135 1136 _Dcache_lineSize = _Dcache_lineSize == 0 ? levelLineSize[i] : _Dcache_lineSize; 1137 _Icache_lineSize = _Icache_lineSize == 0 ? levelLineSize[i] : _Icache_lineSize; 1138 lineSize_mismatch = lineSize_mismatch || (_Dcache_lineSize != levelLineSize[i]) 1139 || (_Icache_lineSize != levelLineSize[i]); 1140 } else { 1141 levelLineSize[i] = 0; 1142 } 1143 } 1144 1145 if (print_something) { 1146 tty->cr(); 1147 tty->print_cr("--------------------------------------"); 1148 tty->print_cr("--- D/I-Cache Detail Information ---"); 1149 tty->print_cr("--------------------------------------"); 1150 if (lineSize_mismatch) { 1151 tty->print_cr("WARNING: D/I-Cache line size mismatch!"); 1152 } 1153 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) { 1154 if (levelLineSize[i] > 0) { 1155 tty->print_cr(" D/I-Cache Level %d: line size = %4d, total size = %6dKB, associativity = %2d", 1156 i+1, levelLineSize[i], levelTotalSize[i]/(int)K, levelAssociativity[i]); 1157 } 1158 } 1159 } 1160 tty->cr(); 1161 } 1162 return; 1163 } 1164 1165 unsigned long VM_Version::z_SIGILL() { 1166 unsigned long ZeroBuffer = 0; 1167 unsigned long work; 1168 asm( 1169 " LA %[work],%[buffer] \n\t" // Load address of buffer. 1170 " LARL 14,+6 \n\t" // Load address of faulting instruction. 1171 " BCR 15,%[work] \n\t" // Branch into buffer, execute whatever is in there. 1172 : [buffer] "+Q" (ZeroBuffer) /* outputs */ 1173 , [work] "=&a" (work) /* outputs */ 1174 : /* inputs */ 1175 : "cc" /* clobbered */ 1176 ); 1177 return ZeroBuffer; 1178 } 1179 1180 unsigned long VM_Version::z_SIGSEGV() { 1181 unsigned long ZeroBuffer = 0; 1182 unsigned long work; 1183 asm( 1184 " LG %[work],%[buffer] \n\t" // Load zero address. 1185 " STG %[work],0(,%[work])\n\t" // Store to address zero. 1186 : [buffer] "+Q" (ZeroBuffer) /* outputs */ 1187 , [work] "=&a" (work) /* outputs */ 1188 : /* inputs */ 1189 : "cc" /* clobbered */ 1190 ); 1191 return ZeroBuffer; 1192 } 1193