| /* |
| * Copyright (c) 2016, 2020, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2016, 2020 SAP SE. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "jvm.h" |
| #include "asm/assembler.inline.hpp" |
| #include "compiler/disassembler.hpp" |
| #include "code/compiledIC.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "runtime/globals_extension.hpp" |
| #include "runtime/java.hpp" |
| #include "runtime/stubCodeGenerator.hpp" |
| #include "runtime/vm_version.hpp" |
| |
| # include <sys/sysinfo.h> |
| |
| bool VM_Version::_is_determine_features_test_running = false; |
| const char* VM_Version::_model_string; |
| |
| unsigned long VM_Version::_features[_features_buffer_len] = {0, 0, 0, 0}; |
| unsigned long VM_Version::_cipher_features[_features_buffer_len] = {0, 0, 0, 0}; |
| unsigned long VM_Version::_msgdigest_features[_features_buffer_len] = {0, 0, 0, 0}; |
| unsigned int VM_Version::_nfeatures = 0; |
| unsigned int VM_Version::_ncipher_features = 0; |
| unsigned int VM_Version::_nmsgdigest_features = 0; |
| unsigned int VM_Version::_Dcache_lineSize = DEFAULT_CACHE_LINE_SIZE; |
| unsigned int VM_Version::_Icache_lineSize = DEFAULT_CACHE_LINE_SIZE; |
| |
| static const char* z_gen[] = {" ", "G1", "G2", "G3", "G4", "G5", "G6", "G7" }; |
| static const char* z_machine[] = {" ", "2064", "2084", "2094", "2097", "2817", " ", "2964" }; |
| static const char* z_name[] = {" ", "z900", "z990", "z9 EC", "z10 EC", "z196 EC", "ec12", "z13" }; |
| |
| void VM_Version::initialize() { |
| determine_features(); // Get processor capabilities. |
| set_features_string(); // Set a descriptive feature indication. |
| |
| if (Verbose) { |
| print_features(); |
| } |
| |
| intx cache_line_size = Dcache_lineSize(0); |
| |
| #ifdef COMPILER2 |
| MaxVectorSize = 8; |
| #endif |
| |
| if (has_PrefetchRaw()) { |
| if (FLAG_IS_DEFAULT(AllocatePrefetchStyle)) { // not preset |
| // 0 = no prefetch. |
| // 1 = Prefetch instructions for each allocation. |
| // 2 = Use TLAB watermark to gate allocation prefetch. |
| AllocatePrefetchStyle = 1; |
| } |
| |
| if (AllocatePrefetchStyle > 0) { // Prefetching turned on at all? |
| // Distance to prefetch ahead of allocation pointer. |
| if (FLAG_IS_DEFAULT(AllocatePrefetchDistance) || (AllocatePrefetchDistance < 0)) { // not preset |
| AllocatePrefetchDistance = 0; |
| } |
| |
| // Number of lines to prefetch ahead of allocation pointer. |
| if (FLAG_IS_DEFAULT(AllocatePrefetchLines) || (AllocatePrefetchLines <= 0)) { // not preset |
| AllocatePrefetchLines = 3; |
| } |
| |
| // Step size in bytes of sequential prefetch instructions. |
| if (FLAG_IS_DEFAULT(AllocatePrefetchStepSize) || (AllocatePrefetchStepSize <= 0)) { // not preset |
| FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size); |
| } else if (AllocatePrefetchStepSize < cache_line_size) { |
| FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size); |
| } else { |
| FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size); |
| } |
| } else { |
| FLAG_SET_DEFAULT(AllocatePrefetchStyle, 0); |
| AllocatePrefetchDistance = 0; |
| AllocatePrefetchLines = 0; |
| // Can't be zero. Will SIGFPE during constraints checking. |
| FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size); |
| } |
| |
| } else { |
| FLAG_SET_DEFAULT(AllocatePrefetchStyle, 0); |
| AllocatePrefetchDistance = 0; |
| AllocatePrefetchLines = 0; |
| // Can't be zero. Will SIGFPE during constraints checking. |
| FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size); |
| } |
| |
| // TODO: |
| // On z/Architecture, cache line size is significantly large (256 bytes). Do we really need |
| // to keep contended members that far apart? Performance tests are required. |
| if (FLAG_IS_DEFAULT(ContendedPaddingWidth) && (cache_line_size > ContendedPaddingWidth)) { |
| ContendedPaddingWidth = cache_line_size; |
| } |
| |
| // On z/Architecture, the CRC32/CRC32C intrinsics are implemented "by hand". |
| // TODO: Provide implementation based on the vector instructions available from z13. |
| // Note: The CHECKSUM instruction, which has been there since the very beginning |
| // (of z/Architecture), computes "some kind of" a checksum. |
| // It has nothing to do with the CRC32 algorithm. |
| if (FLAG_IS_DEFAULT(UseCRC32Intrinsics)) { |
| FLAG_SET_DEFAULT(UseCRC32Intrinsics, true); |
| } |
| if (FLAG_IS_DEFAULT(UseCRC32CIntrinsics)) { |
| FLAG_SET_DEFAULT(UseCRC32CIntrinsics, true); |
| } |
| |
| // TODO: Provide implementation. |
| if (UseAdler32Intrinsics) { |
| warning("Adler32Intrinsics not available on this CPU."); |
| FLAG_SET_DEFAULT(UseAdler32Intrinsics, false); |
| } |
| |
| // On z/Architecture, we take UseAES as the general switch to enable/disable the AES intrinsics. |
| // The specific, and yet to be defined, switches UseAESxxxIntrinsics will then be set |
| // depending on the actual machine capabilities. |
| // Explicitly setting them via CmdLine option takes precedence, of course. |
| // TODO: UseAESIntrinsics must be made keylength specific. |
| // As of March 2015 and Java8, only AES128 is supported by the Java Cryptographic Extensions. |
| // Therefore, UseAESIntrinsics is of minimal use at the moment. |
| if (FLAG_IS_DEFAULT(UseAES) && has_Crypto_AES()) { |
| FLAG_SET_DEFAULT(UseAES, true); |
| } |
| if (UseAES && !has_Crypto_AES()) { |
| warning("AES instructions are not available on this CPU"); |
| FLAG_SET_DEFAULT(UseAES, false); |
| } |
| if (UseAES) { |
| if (FLAG_IS_DEFAULT(UseAESIntrinsics)) { |
| FLAG_SET_DEFAULT(UseAESIntrinsics, true); |
| } |
| } |
| if (UseAESIntrinsics && !has_Crypto_AES()) { |
| warning("AES intrinsics are not available on this CPU"); |
| FLAG_SET_DEFAULT(UseAESIntrinsics, false); |
| } |
| if (UseAESIntrinsics && !UseAES) { |
| warning("AES intrinsics require UseAES flag to be enabled. Intrinsics will be disabled."); |
| FLAG_SET_DEFAULT(UseAESIntrinsics, false); |
| } |
| |
| // TODO: implement AES/CTR intrinsics |
| if (UseAESCTRIntrinsics) { |
| warning("AES/CTR intrinsics are not available on this CPU"); |
| FLAG_SET_DEFAULT(UseAESCTRIntrinsics, false); |
| } |
| |
| if (FLAG_IS_DEFAULT(UseGHASHIntrinsics) && has_Crypto_GHASH()) { |
| FLAG_SET_DEFAULT(UseGHASHIntrinsics, true); |
| } |
| if (UseGHASHIntrinsics && !has_Crypto_GHASH()) { |
| warning("GHASH intrinsics are not available on this CPU"); |
| FLAG_SET_DEFAULT(UseGHASHIntrinsics, false); |
| } |
| |
| if (FLAG_IS_DEFAULT(UseFMA)) { |
| FLAG_SET_DEFAULT(UseFMA, true); |
| } |
| |
| if (UseMD5Intrinsics) { |
| warning("MD5 intrinsics are not available on this CPU"); |
| FLAG_SET_DEFAULT(UseMD5Intrinsics, false); |
| } |
| |
| // On z/Architecture, we take UseSHA as the general switch to enable/disable the SHA intrinsics. |
| // The specific switches UseSHAxxxIntrinsics will then be set depending on the actual |
| // machine capabilities. |
| // Explicitly setting them via CmdLine option takes precedence, of course. |
| if (FLAG_IS_DEFAULT(UseSHA) && has_Crypto_SHA()) { |
| FLAG_SET_DEFAULT(UseSHA, true); |
| } |
| if (UseSHA && !has_Crypto_SHA()) { |
| warning("SHA instructions are not available on this CPU"); |
| FLAG_SET_DEFAULT(UseSHA, false); |
| } |
| if (UseSHA && has_Crypto_SHA1()) { |
| if (FLAG_IS_DEFAULT(UseSHA1Intrinsics)) { |
| FLAG_SET_DEFAULT(UseSHA1Intrinsics, true); |
| } |
| } else if (UseSHA1Intrinsics) { |
| warning("Intrinsics for SHA-1 crypto hash functions not available on this CPU."); |
| FLAG_SET_DEFAULT(UseSHA1Intrinsics, false); |
| } |
| if (UseSHA && has_Crypto_SHA256()) { |
| if (FLAG_IS_DEFAULT(UseSHA256Intrinsics)) { |
| FLAG_SET_DEFAULT(UseSHA256Intrinsics, true); |
| } |
| } else if (UseSHA256Intrinsics) { |
| warning("Intrinsics for SHA-224 and SHA-256 crypto hash functions not available on this CPU."); |
| FLAG_SET_DEFAULT(UseSHA256Intrinsics, false); |
| } |
| if (UseSHA && has_Crypto_SHA512()) { |
| if (FLAG_IS_DEFAULT(UseSHA512Intrinsics)) { |
| FLAG_SET_DEFAULT(UseSHA512Intrinsics, true); |
| } |
| } else if (UseSHA512Intrinsics) { |
| warning("Intrinsics for SHA-384 and SHA-512 crypto hash functions not available on this CPU."); |
| FLAG_SET_DEFAULT(UseSHA512Intrinsics, false); |
| } |
| |
| if (!(UseSHA1Intrinsics || UseSHA256Intrinsics || UseSHA512Intrinsics)) { |
| FLAG_SET_DEFAULT(UseSHA, false); |
| } |
| |
| #ifdef COMPILER2 |
| if (FLAG_IS_DEFAULT(UseMultiplyToLenIntrinsic)) { |
| FLAG_SET_DEFAULT(UseMultiplyToLenIntrinsic, true); |
| } |
| if (FLAG_IS_DEFAULT(UseMontgomeryMultiplyIntrinsic)) { |
| FLAG_SET_DEFAULT(UseMontgomeryMultiplyIntrinsic, true); |
| } |
| if (FLAG_IS_DEFAULT(UseMontgomerySquareIntrinsic)) { |
| FLAG_SET_DEFAULT(UseMontgomerySquareIntrinsic, true); |
| } |
| #endif |
| if (FLAG_IS_DEFAULT(UsePopCountInstruction)) { |
| FLAG_SET_DEFAULT(UsePopCountInstruction, true); |
| } |
| |
| // z/Architecture supports 8-byte compare-exchange operations |
| // (see Atomic::cmpxchg) |
| // and 'atomic long memory ops' (see Unsafe_GetLongVolatile). |
| _supports_cx8 = true; |
| |
| _supports_atomic_getadd4 = VM_Version::has_LoadAndALUAtomicV1(); |
| _supports_atomic_getadd8 = VM_Version::has_LoadAndALUAtomicV1(); |
| |
| // z/Architecture supports unaligned memory accesses. |
| // Performance penalty is negligible. An additional tick or so |
| // is lost if the accessed data spans a cache line boundary. |
| // Unaligned accesses are not atomic, of course. |
| if (FLAG_IS_DEFAULT(UseUnalignedAccesses)) { |
| FLAG_SET_DEFAULT(UseUnalignedAccesses, true); |
| } |
| } |
| |
| |
| void VM_Version::set_features_string() { |
| // A note on the _features_string format: |
| // There are jtreg tests checking the _features_string for various properties. |
| // For some strange reason, these tests require the string to contain |
| // only _lowercase_ characters. Keep that in mind when being surprised |
| // about the unusual notation of features - and when adding new ones. |
| // Features may have one comma at the end. |
| // Furthermore, use one, and only one, separator space between features. |
| // Multiple spaces are considered separate tokens, messing up everything. |
| unsigned int ambiguity = 0; |
| _model_string = z_name[0]; |
| if (is_z13()) { |
| _features_string = "system-z, g7-z13, ldisp_fast, extimm, pcrel_load/store, cmpb, cond_load/store, interlocked_update, txm, vectorinstr"; |
| _model_string = z_name[7]; |
| ambiguity++; |
| } |
| if (is_ec12()) { |
| _features_string = "system-z, g6-ec12, ldisp_fast, extimm, pcrel_load/store, cmpb, cond_load/store, interlocked_update, txm"; |
| _model_string = z_name[6]; |
| ambiguity++; |
| } |
| if (is_z196()) { |
| _features_string = "system-z, g5-z196, ldisp_fast, extimm, pcrel_load/store, cmpb, cond_load/store, interlocked_update"; |
| _model_string = z_name[5]; |
| ambiguity++; |
| } |
| if (is_z10()) { |
| _features_string = "system-z, g4-z10, ldisp_fast, extimm, pcrel_load/store, cmpb"; |
| _model_string = z_name[4]; |
| ambiguity++; |
| } |
| if (is_z9()) { |
| _features_string = "system-z, g3-z9, ldisp_fast, extimm, out-of-support as of 2016-04-01"; |
| _model_string = z_name[3]; |
| ambiguity++; |
| } |
| if (is_z990()) { |
| _features_string = "system-z, g2-z990, ldisp_fast, out-of-support as of 2014-07-01"; |
| _model_string = z_name[2]; |
| ambiguity++; |
| } |
| if (is_z900()) { |
| _features_string = "system-z, g1-z900, ldisp, out-of-support as of 2014-07-01"; |
| _model_string = z_name[1]; |
| ambiguity++; |
| } |
| |
| if (ambiguity == 0) { |
| _features_string = "z/Architecture (unknown generation)"; |
| } else if (ambiguity > 1) { |
| tty->print_cr("*** WARNING *** Ambiguous z/Architecture detection, ambiguity = %d", ambiguity); |
| tty->print_cr(" oldest detected generation is %s", _features_string); |
| _features_string = "z/Architecture (ambiguous detection)"; |
| } |
| |
| if (has_Crypto_AES()) { |
| char buf[256]; |
| assert(strlen(_features_string) + 3*8 < sizeof(buf), "increase buffer size"); |
| jio_snprintf(buf, sizeof(buf), "%s%s%s%s", |
| _features_string, |
| has_Crypto_AES128() ? ", aes128" : "", |
| has_Crypto_AES192() ? ", aes192" : "", |
| has_Crypto_AES256() ? ", aes256" : ""); |
| _features_string = os::strdup(buf); |
| } |
| |
| if (has_Crypto_SHA()) { |
| char buf[256]; |
| assert(strlen(_features_string) + 6 + 2*8 + 7 < sizeof(buf), "increase buffer size"); |
| jio_snprintf(buf, sizeof(buf), "%s%s%s%s%s", |
| _features_string, |
| has_Crypto_SHA1() ? ", sha1" : "", |
| has_Crypto_SHA256() ? ", sha256" : "", |
| has_Crypto_SHA512() ? ", sha512" : "", |
| has_Crypto_GHASH() ? ", ghash" : ""); |
| if (has_Crypto_AES()) { os::free((void *)_features_string); } |
| _features_string = os::strdup(buf); |
| } |
| } |
| |
| // featureBuffer - bit array indicating availability of various features |
| // featureNum - bit index of feature to be tested |
| // Featurenum < 0 requests test for any nonzero bit in featureBuffer. |
| // bufLen - length of featureBuffer in bits |
| bool VM_Version::test_feature_bit(unsigned long* featureBuffer, int featureNum, unsigned int bufLen) { |
| assert(bufLen > 0, "buffer len must be positive"); |
| assert((bufLen & 0x0007) == 0, "unaligned buffer len"); |
| assert(((intptr_t)featureBuffer&0x0007) == 0, "unaligned feature buffer"); |
| if (featureNum < 0) { |
| // Any bit set at all? |
| bool anyBit = false; |
| for (size_t i = 0; i < bufLen/(8*sizeof(long)); i++) { |
| anyBit = anyBit || (featureBuffer[i] != 0); |
| } |
| return anyBit; |
| } else { |
| assert((unsigned int)featureNum < bufLen, "feature index out of range"); |
| unsigned char* byteBuffer = (unsigned char*)featureBuffer; |
| int byteIndex = featureNum/(8*sizeof(char)); |
| int bitIndex = featureNum%(8*sizeof(char)); |
| // Indexed bit set? |
| return (byteBuffer[byteIndex] & (1U<<(7-bitIndex))) != 0; |
| } |
| } |
| |
| void VM_Version::print_features_internal(const char* text, bool print_anyway) { |
| tty->print_cr("%s %s", text, features_string()); |
| tty->print("%s", text); |
| for (unsigned int i = 0; i < _nfeatures; i++) { |
| tty->print(" 0x%16.16lx", _features[i]); |
| } |
| tty->cr(); |
| |
| if (Verbose || print_anyway) { |
| // z900 |
| if (has_long_displacement() ) tty->print_cr("available: %s", "LongDispFacility"); |
| // z990 |
| if (has_long_displacement_fast() ) tty->print_cr("available: %s", "LongDispFacilityHighPerf"); |
| if (has_ETF2() && has_ETF3() ) tty->print_cr("available: %s", "ETF2 and ETF3"); |
| if (has_Crypto() ) tty->print_cr("available: %s", "CryptoFacility"); |
| // z9 |
| if (has_extended_immediate() ) tty->print_cr("available: %s", "ExtImmedFacility"); |
| if (has_StoreFacilityListExtended()) tty->print_cr("available: %s", "StoreFacilityListExtended"); |
| if (has_StoreClockFast() ) tty->print_cr("available: %s", "StoreClockFast"); |
| if (has_ETF2Enhancements() ) tty->print_cr("available: %s", "ETF2 Enhancements"); |
| if (has_ETF3Enhancements() ) tty->print_cr("available: %s", "ETF3 Enhancements"); |
| if (has_HFPUnnormalized() ) tty->print_cr("available: %s", "HFPUnnormalizedFacility"); |
| if (has_HFPMultiplyAndAdd() ) tty->print_cr("available: %s", "HFPMultiplyAndAddFacility"); |
| // z10 |
| if (has_ParsingEnhancements() ) tty->print_cr("available: %s", "Parsing Enhancements"); |
| if (has_ExtractCPUtime() ) tty->print_cr("available: %s", "ExtractCPUTime"); |
| if (has_CompareSwapStore() ) tty->print_cr("available: %s", "CompareSwapStore"); |
| if (has_GnrlInstrExtensions() ) tty->print_cr("available: %s", "General Instruction Extensions"); |
| if (has_CompareBranch() ) tty->print_cr(" available: %s", "Compare and Branch"); |
| if (has_CompareTrap() ) tty->print_cr(" available: %s", "Compare and Trap"); |
| if (has_RelativeLoadStore() ) tty->print_cr(" available: %s", "Relative Load/Store"); |
| if (has_MultiplySingleImm32() ) tty->print_cr(" available: %s", "MultiplySingleImm32"); |
| if (has_Prefetch() ) tty->print_cr(" available: %s", "Prefetch"); |
| if (has_MoveImmToMem() ) tty->print_cr(" available: %s", "Direct Moves Immediate to Memory"); |
| if (has_MemWithImmALUOps() ) tty->print_cr(" available: %s", "Direct ALU Ops Memory .op. Immediate"); |
| if (has_ExtractCPUAttributes() ) tty->print_cr(" available: %s", "Extract CPU Atributes"); |
| if (has_ExecuteExtensions() ) tty->print_cr("available: %s", "ExecuteExtensions"); |
| if (has_FPSupportEnhancements() ) tty->print_cr("available: %s", "FPSupportEnhancements"); |
| if (has_DecimalFloatingPoint() ) tty->print_cr("available: %s", "DecimalFloatingPoint"); |
| // z196 |
| if (has_DistinctOpnds() ) tty->print_cr("available: %s", "Distinct Operands"); |
| if (has_InterlockedAccessV1() ) tty->print_cr(" available: %s", "InterlockedAccess V1 (fast)"); |
| if (has_PopCount() ) tty->print_cr(" available: %s", "PopCount"); |
| if (has_LoadStoreConditional() ) tty->print_cr(" available: %s", "LoadStoreConditional"); |
| if (has_HighWordInstr() ) tty->print_cr(" available: %s", "HighWord Instructions"); |
| if (has_FastSync() ) tty->print_cr(" available: %s", "FastSync (bcr 14,0)"); |
| if (has_AtomicMemWithImmALUOps() ) tty->print_cr("available: %s", "Atomic Direct ALU Ops Memory .op. Immediate"); |
| if (has_FPExtensions() ) tty->print_cr("available: %s", "Floatingpoint Extensions"); |
| if (has_CryptoExt3() ) tty->print_cr("available: %s", "Crypto Extensions 3"); |
| if (has_CryptoExt4() ) tty->print_cr("available: %s", "Crypto Extensions 4"); |
| // EC12 |
| if (has_MiscInstrExt() ) tty->print_cr("available: %s", "Miscelaneous Instruction Extensions"); |
| if (has_ExecutionHint() ) tty->print_cr(" available: %s", "Execution Hints (branch prediction)"); |
| if (has_ProcessorAssist() ) tty->print_cr(" available: %s", "Processor Assists"); |
| if (has_LoadAndTrap() ) tty->print_cr(" available: %s", "Load and Trap"); |
| if (has_TxMem() ) tty->print_cr("available: %s", "Transactional Memory"); |
| if (has_InterlockedAccessV2() ) tty->print_cr(" available: %s", "InterlockedAccess V2 (fast)"); |
| if (has_DFPZonedConversion() ) tty->print_cr(" available: %s", "DFP Zoned Conversions"); |
| // z13 |
| if (has_LoadStoreConditional2() ) tty->print_cr("available: %s", "Load/Store Conditional 2"); |
| if (has_CryptoExt5() ) tty->print_cr("available: %s", "Crypto Extensions 5"); |
| if (has_DFPPackedConversion() ) tty->print_cr("available: %s", "DFP Packed Conversions"); |
| if (has_VectorFacility() ) tty->print_cr("available: %s", "Vector Facility"); |
| // test switches |
| if (has_TestFeature1Impl() ) tty->print_cr("available: %s", "TestFeature1Impl"); |
| if (has_TestFeature2Impl() ) tty->print_cr("available: %s", "TestFeature2Impl"); |
| if (has_TestFeature4Impl() ) tty->print_cr("available: %s", "TestFeature4Impl"); |
| if (has_TestFeature8Impl() ) tty->print_cr("available: %s", "TestFeature8Impl"); |
| |
| if (has_Crypto()) { |
| tty->cr(); |
| tty->print_cr("detailed availability of %s capabilities:", "CryptoFacility"); |
| if (test_feature_bit(&_cipher_features[0], -1, 2*Cipher::_featureBits)) { |
| tty->cr(); |
| tty->print_cr(" available: %s", "Message Cipher Functions"); |
| } |
| if (test_feature_bit(&_cipher_features[0], -1, (int)Cipher::_featureBits)) { |
| tty->print_cr(" available Crypto Features of KM (Cipher Message):"); |
| for (unsigned int i = 0; i < Cipher::_featureBits; i++) { |
| if (test_feature_bit(&_cipher_features[0], i, (int)Cipher::_featureBits)) { |
| switch (i) { |
| case Cipher::_Query: tty->print_cr(" available: KM Query"); break; |
| case Cipher::_DEA: tty->print_cr(" available: KM DEA"); break; |
| case Cipher::_TDEA128: tty->print_cr(" available: KM TDEA-128"); break; |
| case Cipher::_TDEA192: tty->print_cr(" available: KM TDEA-192"); break; |
| case Cipher::_EncryptedDEA: tty->print_cr(" available: KM Encrypted DEA"); break; |
| case Cipher::_EncryptedDEA128: tty->print_cr(" available: KM Encrypted DEA-128"); break; |
| case Cipher::_EncryptedDEA192: tty->print_cr(" available: KM Encrypted DEA-192"); break; |
| case Cipher::_AES128: tty->print_cr(" available: KM AES-128"); break; |
| case Cipher::_AES192: tty->print_cr(" available: KM AES-192"); break; |
| case Cipher::_AES256: tty->print_cr(" available: KM AES-256"); break; |
| case Cipher::_EnccryptedAES128: tty->print_cr(" available: KM Encrypted-AES-128"); break; |
| case Cipher::_EnccryptedAES192: tty->print_cr(" available: KM Encrypted-AES-192"); break; |
| case Cipher::_EnccryptedAES256: tty->print_cr(" available: KM Encrypted-AES-256"); break; |
| case Cipher::_XTSAES128: tty->print_cr(" available: KM XTS-AES-128"); break; |
| case Cipher::_XTSAES256: tty->print_cr(" available: KM XTS-AES-256"); break; |
| case Cipher::_EncryptedXTSAES128: tty->print_cr(" available: KM XTS-Encrypted-AES-128"); break; |
| case Cipher::_EncryptedXTSAES256: tty->print_cr(" available: KM XTS-Encrypted-AES-256"); break; |
| default: tty->print_cr(" available: unknown KM code %d", i); break; |
| } |
| } |
| } |
| } |
| if (test_feature_bit(&_cipher_features[2], -1, (int)Cipher::_featureBits)) { |
| tty->print_cr(" available Crypto Features of KMC (Cipher Message with Chaining):"); |
| for (unsigned int i = 0; i < Cipher::_featureBits; i++) { |
| if (test_feature_bit(&_cipher_features[2], i, (int)Cipher::_featureBits)) { |
| switch (i) { |
| case Cipher::_Query: tty->print_cr(" available: KMC Query"); break; |
| case Cipher::_DEA: tty->print_cr(" available: KMC DEA"); break; |
| case Cipher::_TDEA128: tty->print_cr(" available: KMC TDEA-128"); break; |
| case Cipher::_TDEA192: tty->print_cr(" available: KMC TDEA-192"); break; |
| case Cipher::_EncryptedDEA: tty->print_cr(" available: KMC Encrypted DEA"); break; |
| case Cipher::_EncryptedDEA128: tty->print_cr(" available: KMC Encrypted DEA-128"); break; |
| case Cipher::_EncryptedDEA192: tty->print_cr(" available: KMC Encrypted DEA-192"); break; |
| case Cipher::_AES128: tty->print_cr(" available: KMC AES-128"); break; |
| case Cipher::_AES192: tty->print_cr(" available: KMC AES-192"); break; |
| case Cipher::_AES256: tty->print_cr(" available: KMC AES-256"); break; |
| case Cipher::_EnccryptedAES128: tty->print_cr(" available: KMC Encrypted-AES-128"); break; |
| case Cipher::_EnccryptedAES192: tty->print_cr(" available: KMC Encrypted-AES-192"); break; |
| case Cipher::_EnccryptedAES256: tty->print_cr(" available: KMC Encrypted-AES-256"); break; |
| case Cipher::_PRNG: tty->print_cr(" available: KMC PRNG"); break; |
| default: tty->print_cr(" available: unknown KMC code %d", i); break; |
| } |
| } |
| } |
| } |
| |
| if (test_feature_bit(&_msgdigest_features[0], -1, 2*MsgDigest::_featureBits)) { |
| tty->cr(); |
| tty->print_cr(" available: %s", "Message Digest Functions for SHA"); |
| } |
| if (test_feature_bit(&_msgdigest_features[0], -1, (int)MsgDigest::_featureBits)) { |
| tty->print_cr(" available Features of KIMD (Msg Digest):"); |
| for (unsigned int i = 0; i < MsgDigest::_featureBits; i++) { |
| if (test_feature_bit(&_msgdigest_features[0], i, (int)MsgDigest::_featureBits)) { |
| switch (i) { |
| case MsgDigest::_Query: tty->print_cr(" available: KIMD Query"); break; |
| case MsgDigest::_SHA1: tty->print_cr(" available: KIMD SHA-1"); break; |
| case MsgDigest::_SHA256: tty->print_cr(" available: KIMD SHA-256"); break; |
| case MsgDigest::_SHA512: tty->print_cr(" available: KIMD SHA-512"); break; |
| case MsgDigest::_GHASH: tty->print_cr(" available: KIMD GHASH"); break; |
| default: tty->print_cr(" available: unknown code %d", i); break; |
| } |
| } |
| } |
| } |
| if (test_feature_bit(&_msgdigest_features[2], -1, (int)MsgDigest::_featureBits)) { |
| tty->print_cr(" available Features of KLMD (Msg Digest):"); |
| for (unsigned int i = 0; i < MsgDigest::_featureBits; i++) { |
| if (test_feature_bit(&_msgdigest_features[2], i, (int)MsgDigest::_featureBits)) { |
| switch (i) { |
| case MsgDigest::_Query: tty->print_cr(" available: KLMD Query"); break; |
| case MsgDigest::_SHA1: tty->print_cr(" available: KLMD SHA-1"); break; |
| case MsgDigest::_SHA256: tty->print_cr(" available: KLMD SHA-256"); break; |
| case MsgDigest::_SHA512: tty->print_cr(" available: KLMD SHA-512"); break; |
| default: tty->print_cr(" available: unknown code %d", i); break; |
| } |
| } |
| } |
| } |
| } |
| if (ContendedPaddingWidth > 0) { |
| tty->cr(); |
| tty->print_cr("ContendedPaddingWidth " INTX_FORMAT, ContendedPaddingWidth); |
| } |
| } |
| } |
| |
| void VM_Version::print_platform_virtualization_info(outputStream* st) { |
| // /proc/sysinfo contains interesting information about |
| // - LPAR |
| // - whole "Box" (CPUs ) |
| // - z/VM / KVM (VM<nn>); this is not available in an LPAR-only setup |
| const char* kw[] = { "LPAR", "CPUs", "VM", NULL }; |
| const char* info_file = "/proc/sysinfo"; |
| |
| if (!print_matching_lines_from_file(info_file, st, kw)) { |
| st->print_cr(" <%s Not Available>", info_file); |
| } |
| } |
| |
| void VM_Version::print_features() { |
| print_features_internal("Version:"); |
| } |
| |
| void VM_Version::reset_features(bool reset) { |
| if (reset) { |
| for (unsigned int i = 0; i < _features_buffer_len; i++) { |
| VM_Version::_features[i] = 0; |
| } |
| } |
| } |
| |
| void VM_Version::set_features_z900(bool reset) { |
| reset_features(reset); |
| |
| set_has_long_displacement(); |
| set_has_ETF2(); |
| } |
| |
| void VM_Version::set_features_z990(bool reset) { |
| reset_features(reset); |
| |
| set_features_z900(false); |
| set_has_ETF3(); |
| set_has_long_displacement_fast(); |
| set_has_HFPMultiplyAndAdd(); |
| } |
| |
| void VM_Version::set_features_z9(bool reset) { |
| reset_features(reset); |
| |
| set_features_z990(false); |
| set_has_StoreFacilityListExtended(); |
| // set_has_Crypto(); // Do not set, crypto features must be retrieved separately. |
| set_has_ETF2Enhancements(); |
| set_has_ETF3Enhancements(); |
| set_has_extended_immediate(); |
| set_has_StoreClockFast(); |
| set_has_HFPUnnormalized(); |
| } |
| |
| void VM_Version::set_features_z10(bool reset) { |
| reset_features(reset); |
| |
| set_features_z9(false); |
| set_has_CompareSwapStore(); |
| set_has_RelativeLoadStore(); |
| set_has_CompareBranch(); |
| set_has_CompareTrap(); |
| set_has_MultiplySingleImm32(); |
| set_has_Prefetch(); |
| set_has_MoveImmToMem(); |
| set_has_MemWithImmALUOps(); |
| set_has_ExecuteExtensions(); |
| set_has_FPSupportEnhancements(); |
| set_has_DecimalFloatingPoint(); |
| set_has_ExtractCPUtime(); |
| set_has_CryptoExt3(); |
| } |
| |
| void VM_Version::set_features_z196(bool reset) { |
| reset_features(reset); |
| |
| set_features_z10(false); |
| set_has_InterlockedAccessV1(); |
| set_has_PopCount(); |
| set_has_LoadStoreConditional(); |
| set_has_HighWordInstr(); |
| set_has_FastSync(); |
| set_has_FPExtensions(); |
| set_has_DistinctOpnds(); |
| set_has_CryptoExt4(); |
| } |
| |
| void VM_Version::set_features_ec12(bool reset) { |
| reset_features(reset); |
| |
| set_features_z196(false); |
| set_has_MiscInstrExt(); |
| set_has_InterlockedAccessV2(); |
| set_has_LoadAndALUAtomicV2(); |
| set_has_TxMem(); |
| } |
| |
| void VM_Version::set_features_z13(bool reset) { |
| reset_features(reset); |
| |
| set_features_ec12(false); |
| set_has_LoadStoreConditional2(); |
| set_has_CryptoExt5(); |
| set_has_VectorFacility(); |
| } |
| |
| void VM_Version::set_features_from(const char* march) { |
| bool err = false; |
| bool prt = false; |
| |
| if ((march != NULL) && (march[0] != '\0')) { |
| const int buf_len = 16; |
| const int hdr_len = 5; |
| char buf[buf_len]; |
| if (strlen(march) >= hdr_len) { |
| memcpy(buf, march, hdr_len); |
| buf[hdr_len] = '\00'; |
| } else { |
| buf[0] = '\00'; |
| } |
| |
| if (!strcmp(march, "z900")) { |
| set_features_z900(); |
| } else if (!strcmp(march, "z990")) { |
| set_features_z990(); |
| } else if (!strcmp(march, "z9")) { |
| set_features_z9(); |
| } else if (!strcmp(march, "z10")) { |
| set_features_z10(); |
| } else if (!strcmp(march, "z196")) { |
| set_features_z196(); |
| } else if (!strcmp(march, "ec12")) { |
| set_features_ec12(); |
| } else if (!strcmp(march, "z13")) { |
| set_features_z13(); |
| } else if (!strcmp(buf, "ztest")) { |
| assert(!has_TestFeaturesImpl(), "possible facility list flag conflict"); |
| if (strlen(march) > hdr_len) { |
| int itest = 0; |
| if ((strlen(march)-hdr_len) >= buf_len) err = true; |
| if (!err) { |
| memcpy(buf, &march[hdr_len], strlen(march)-hdr_len); |
| buf[strlen(march)-hdr_len] = '\00'; |
| for (size_t i = 0; !err && (i < strlen(buf)); i++) { |
| itest = itest*10 + buf[i]-'0'; |
| err = err || ((buf[i]-'0') < 0) || ((buf[i]-'0') > 9) || (itest > 15); |
| } |
| } |
| if (!err) { |
| prt = true; |
| if (itest & 0x01) { set_has_TestFeature1Impl(); } |
| if (itest & 0x02) { set_has_TestFeature2Impl(); } |
| if (itest & 0x04) { set_has_TestFeature4Impl(); } |
| if (itest & 0x08) { set_has_TestFeature8Impl(); } |
| } |
| } else { |
| prt = true; |
| set_has_TestFeature1Impl(); |
| set_has_TestFeature2Impl(); |
| set_has_TestFeature4Impl(); |
| set_has_TestFeature8Impl(); |
| } |
| } else { |
| err = true; |
| } |
| if (!err) { |
| set_features_string(); |
| if (prt || PrintAssembly) { |
| print_features_internal("CPU Version as set by cmdline option:", prt); |
| } |
| } else { |
| tty->print_cr("***Warning: Unsupported ProcessorArchitecture: %s, internal settings left undisturbed.", march); |
| } |
| } |
| |
| } |
| |
| static long (*getFeatures)(unsigned long*, int, int) = NULL; |
| |
| void VM_Version::set_getFeatures(address entryPoint) { |
| if (getFeatures == NULL) { |
| getFeatures = (long(*)(unsigned long*, int, int))entryPoint; |
| } |
| } |
| |
| long VM_Version::call_getFeatures(unsigned long* buffer, int buflen, int functionCode) { |
| VM_Version::_is_determine_features_test_running = true; |
| long functionResult = (*getFeatures)(buffer, buflen, functionCode); |
| VM_Version::_is_determine_features_test_running = false; |
| return functionResult; |
| } |
| |
| // Helper function for "extract cache attribute" instruction. |
| int VM_Version::calculate_ECAG_functionCode(unsigned int attributeIndication, |
| unsigned int levelIndication, |
| unsigned int typeIndication) { |
| return (attributeIndication<<4) | (levelIndication<<1) | typeIndication; |
| } |
| |
| void VM_Version::determine_features() { |
| |
| const int cbuf_size = _code_buffer_len; |
| const int buf_len = _features_buffer_len; |
| |
| // Allocate code buffer space for the detection code. |
| ResourceMark rm; |
| CodeBuffer cbuf("determine CPU features", cbuf_size, 0); |
| MacroAssembler* a = new MacroAssembler(&cbuf); |
| |
| // Emit code. |
| set_getFeatures(a->pc()); |
| address code = a->pc(); |
| |
| // Try STFLE. Possible INVOP will cause defaults to be used. |
| Label getFEATURES; |
| Label getCPUFEATURES; // fcode = -1 (cache) |
| Label getCIPHERFEATURES; // fcode = -2 (cipher) |
| Label getMSGDIGESTFEATURES; // fcode = -3 (SHA) |
| Label getVECTORFEATURES; // fcode = -4 (OS support for vector instructions) |
| Label errRTN; |
| a->z_ltgfr(Z_R0, Z_ARG2); // Buf len to r0 and test. |
| a->z_brl(getFEATURES); // negative -> Get machine features not covered by facility list. |
| a->z_lghi(Z_R1,0); |
| a->z_brz(errRTN); // zero -> Function code currently not used, indicate "aborted". |
| |
| a->z_aghi(Z_R0, -1); |
| a->z_stfle(0, Z_ARG1); |
| a->z_lg(Z_R1, 0, Z_ARG1); // Get first DW of facility list. |
| a->z_lgr(Z_RET, Z_R0); // Calculate rtn value for success. |
| a->z_la(Z_RET, 1, Z_RET); |
| a->z_brnz(errRTN); // Instr failed if non-zero CC. |
| a->z_ltgr(Z_R1, Z_R1); // Instr failed if first DW == 0. |
| a->z_bcr(Assembler::bcondNotZero, Z_R14); // Successful return. |
| |
| a->bind(errRTN); |
| a->z_lngr(Z_RET, Z_RET); |
| a->z_ltgr(Z_R1, Z_R1); |
| a->z_bcr(Assembler::bcondNotZero, Z_R14); // Return "buffer too small". |
| a->z_xgr(Z_RET, Z_RET); |
| a->z_br(Z_R14); // Return "operation aborted". |
| |
| a->bind(getFEATURES); |
| a->z_cghi(Z_R0, -1); // -1: Extract CPU attributes, currently: cache layout only. |
| a->z_bre(getCPUFEATURES); |
| a->z_cghi(Z_R0, -2); // -2: Extract detailed crypto capabilities (cipher instructions). |
| a->z_bre(getCIPHERFEATURES); |
| a->z_cghi(Z_R0, -3); // -3: Extract detailed crypto capabilities (msg digest instructions). |
| a->z_bre(getMSGDIGESTFEATURES); |
| a->z_cghi(Z_R0, -4); // -4: Verify vector instruction availability (OS support). |
| a->z_bre(getVECTORFEATURES); |
| |
| a->z_xgr(Z_RET, Z_RET); // Not a valid function code. |
| a->z_br(Z_R14); // Return "operation aborted". |
| |
| // Try KIMD/KLMD query function to get details about msg digest (secure hash, SHA) instructions. |
| a->bind(getMSGDIGESTFEATURES); |
| a->z_lghi(Z_R0,(int)MsgDigest::_Query); // query function code |
| a->z_lgr(Z_R1,Z_R2); // param block addr, 2*16 bytes min size |
| a->z_kimd(Z_R2,Z_R2); // Get available KIMD functions (bit pattern in param blk). |
| a->z_la(Z_R1,16,Z_R1); // next param block addr |
| a->z_klmd(Z_R2,Z_R2); // Get available KLMD functions (bit pattern in param blk). |
| a->z_lghi(Z_RET,4); |
| a->z_br(Z_R14); |
| |
| // Try KM/KMC query function to get details about crypto instructions. |
| a->bind(getCIPHERFEATURES); |
| a->z_lghi(Z_R0,(int)Cipher::_Query); // query function code |
| a->z_lgr(Z_R1,Z_R2); // param block addr, 2*16 bytes min size (KIMD/KLMD output) |
| a->z_km(Z_R2,Z_R2); // get available KM functions |
| a->z_la(Z_R1,16,Z_R1); // next param block addr |
| a->z_kmc(Z_R2,Z_R2); // get available KMC functions |
| a->z_lghi(Z_RET,4); |
| a->z_br(Z_R14); |
| |
| // Use EXTRACT CPU ATTRIBUTE instruction to get information about cache layout. |
| a->bind(getCPUFEATURES); |
| a->z_xgr(Z_R0,Z_R0); // as recommended in instruction documentation |
| a->z_ecag(Z_RET,Z_R0,0,Z_ARG3); // Extract information as requested by Z_ARG1 contents. |
| a->z_br(Z_R14); |
| |
| // Use a vector instruction to verify OS support. Will fail with SIGFPE if OS support is missing. |
| a->bind(getVECTORFEATURES); |
| a->z_vtm(Z_V0,Z_V0); // non-destructive vector instruction. Will cause SIGFPE if not supported. |
| a->z_br(Z_R14); |
| |
| address code_end = a->pc(); |
| a->flush(); |
| |
| cbuf.insts()->set_end(code_end); |
| |
| // Print the detection code. |
| bool printVerbose = Verbose || PrintAssembly || PrintStubCode; |
| if (printVerbose) { |
| ttyLocker ttyl; |
| tty->print_cr("Decoding CPU feature detection stub at " INTPTR_FORMAT " before execution:", p2i(code)); |
| tty->print_cr("Stub length is %ld bytes, codebuffer reserves %d bytes, %ld bytes spare.", |
| code_end-code, cbuf_size, cbuf_size-(code_end-code)); |
| |
| // Use existing decode function. This enables the [MachCode] format which is needed to DecodeErrorFile. |
| Disassembler::decode(&cbuf, code, code_end, tty); |
| } |
| |
| // Prepare for detection code execution and clear work buffer. |
| _nfeatures = 0; |
| _ncipher_features = 0; |
| unsigned long buffer[buf_len]; |
| |
| for (int i = 0; i < buf_len; i++) { |
| buffer[i] = 0L; |
| } |
| |
| // execute code |
| // Illegal instructions will be replaced by 0 in signal handler. |
| // In case of problems, call_getFeatures will return a not-positive result. |
| long used_len = call_getFeatures(buffer, buf_len, 0); |
| |
| bool ok; |
| if (used_len == 1) { |
| ok = true; |
| } else if (used_len > 1) { |
| unsigned int used_lenU = (unsigned int)used_len; |
| ok = true; |
| for (unsigned int i = 1; i < used_lenU; i++) { |
| ok = ok && (buffer[i] == 0L); |
| } |
| if (printVerbose && !ok) { |
| bool compact = false; |
| tty->print_cr("Note: feature list has %d (i.e. more than one) array elements.", used_lenU); |
| if (compact) { |
| tty->print("non-zero feature list elements:"); |
| for (unsigned int i = 0; i < used_lenU; i++) { |
| tty->print(" [%d]: 0x%16.16lx", i, buffer[i]); |
| } |
| tty->cr(); |
| } else { |
| for (unsigned int i = 0; i < used_lenU; i++) { |
| tty->print_cr("non-zero feature list[%d]: 0x%16.16lx", i, buffer[i]); |
| } |
| } |
| |
| if (compact) { |
| tty->print_cr("Active features (compact view):"); |
| for (unsigned int k = 0; k < used_lenU; k++) { |
| tty->print_cr(" buffer[%d]:", k); |
| for (unsigned int j = k*sizeof(long); j < (k+1)*sizeof(long); j++) { |
| bool line = false; |
| for (unsigned int i = j*8; i < (j+1)*8; i++) { |
| bool bit = test_feature_bit(buffer, i, used_lenU*sizeof(long)*8); |
| if (bit) { |
| if (!line) { |
| tty->print(" byte[%d]:", j); |
| line = true; |
| } |
| tty->print(" [%3.3d]", i); |
| } |
| } |
| if (line) { |
| tty->cr(); |
| } |
| } |
| } |
| } else { |
| tty->print_cr("Active features (full view):"); |
| for (unsigned int k = 0; k < used_lenU; k++) { |
| tty->print_cr(" buffer[%d]:", k); |
| for (unsigned int j = k*sizeof(long); j < (k+1)*sizeof(long); j++) { |
| tty->print(" byte[%d]:", j); |
| for (unsigned int i = j*8; i < (j+1)*8; i++) { |
| bool bit = test_feature_bit(buffer, i, used_lenU*sizeof(long)*8); |
| if (bit) { |
| tty->print(" [%3.3d]", i); |
| } else { |
| tty->print(" "); |
| } |
| } |
| tty->cr(); |
| } |
| } |
| } |
| } |
| ok = true; |
| } else { // No features retrieved if we reach here. Buffer too short or instr not available. |
| if (used_len < 0) { |
| ok = false; |
| if (printVerbose) { |
| tty->print_cr("feature list buffer[%d] too short, required: buffer[%ld]", buf_len, -used_len); |
| } |
| } else { |
| if (printVerbose) { |
| tty->print_cr("feature list could not be retrieved. Running on z900 or z990? Trying to find out..."); |
| } |
| used_len = call_getFeatures(buffer, 0, 0); // Must provide at least two DW buffer elements!!!! |
| |
| ok = used_len > 0; |
| if (ok) { |
| if (buffer[1]*10 < buffer[0]) { |
| set_features_z900(); |
| } else { |
| set_features_z990(); |
| } |
| |
| if (printVerbose) { |
| tty->print_cr("Note: high-speed long displacement test used %ld iterations.", used_len); |
| tty->print_cr(" Positive displacement loads took %8.8lu microseconds.", buffer[1]); |
| tty->print_cr(" Negative displacement loads took %8.8lu microseconds.", buffer[0]); |
| if (has_long_displacement_fast()) { |
| tty->print_cr(" assuming high-speed long displacement IS available."); |
| } else { |
| tty->print_cr(" assuming high-speed long displacement is NOT available."); |
| } |
| } |
| } else { |
| if (printVerbose) { |
| tty->print_cr("Note: high-speed long displacement test was not successful."); |
| tty->print_cr(" assuming long displacement is NOT available."); |
| } |
| } |
| return; // Do not copy buffer to _features, no test for cipher features. |
| } |
| } |
| |
| if (ok) { |
| // Fill features buffer. |
| // Clear work buffer. |
| for (int i = 0; i < buf_len; i++) { |
| _features[i] = buffer[i]; |
| _cipher_features[i] = 0; |
| _msgdigest_features[i] = 0; |
| buffer[i] = 0L; |
| } |
| _nfeatures = used_len; |
| } else { |
| for (int i = 0; i < buf_len; i++) { |
| _features[i] = 0; |
| _cipher_features[i] = 0; |
| _msgdigest_features[i] = 0; |
| buffer[i] = 0L; |
| } |
| _nfeatures = 0; |
| } |
| |
| if (has_VectorFacility()) { |
| // Verify that feature can actually be used. OS support required. |
| call_getFeatures(buffer, -4, 0); |
| if (printVerbose) { |
| ttyLocker ttyl; |
| if (has_VectorFacility()) { |
| tty->print_cr(" Vector Facility has been verified to be supported by OS"); |
| } else { |
| tty->print_cr(" Vector Facility has been disabled - not supported by OS"); |
| } |
| } |
| } |
| |
| // Extract Crypto Facility details. |
| if (has_Crypto()) { |
| // Get cipher features. |
| used_len = call_getFeatures(buffer, -2, 0); |
| for (int i = 0; i < buf_len; i++) { |
| _cipher_features[i] = buffer[i]; |
| } |
| _ncipher_features = used_len; |
| |
| // Get msg digest features. |
| used_len = call_getFeatures(buffer, -3, 0); |
| for (int i = 0; i < buf_len; i++) { |
| _msgdigest_features[i] = buffer[i]; |
| } |
| _nmsgdigest_features = used_len; |
| } |
| |
| static int levelProperties[_max_cache_levels]; // All property indications per level. |
| static int levelScope[_max_cache_levels]; // private/shared |
| static const char* levelScopeText[4] = {"No cache ", |
| "CPU private", |
| "shared ", |
| "reserved "}; |
| |
| static int levelType[_max_cache_levels]; // D/I/mixed |
| static const char* levelTypeText[4] = {"separate D and I caches", |
| "I cache only ", |
| "D-cache only ", |
| "combined D/I cache "}; |
| |
| static unsigned int levelReserved[_max_cache_levels]; // reserved property bits |
| static unsigned int levelLineSize[_max_cache_levels]; |
| static unsigned int levelTotalSize[_max_cache_levels]; |
| static unsigned int levelAssociativity[_max_cache_levels]; |
| |
| |
| // Extract Cache Layout details. |
| if (has_ExtractCPUAttributes() && printVerbose) { // For information only, as of now. |
| bool lineSize_mismatch; |
| bool print_something; |
| long functionResult; |
| unsigned int attributeIndication = 0; // 0..15 |
| unsigned int levelIndication = 0; // 0..8 |
| unsigned int typeIndication = 0; // 0..1 (D-Cache, I-Cache) |
| int functionCode = calculate_ECAG_functionCode(attributeIndication, levelIndication, typeIndication); |
| |
| // Get cache topology. |
| functionResult = call_getFeatures(buffer, -1, functionCode); |
| |
| for (unsigned int i = 0; i < _max_cache_levels; i++) { |
| if (functionResult > 0) { |
| int shiftVal = 8*(_max_cache_levels-(i+1)); |
| levelProperties[i] = (functionResult & (0xffUL<<shiftVal)) >> shiftVal; |
| levelReserved[i] = (levelProperties[i] & 0xf0) >> 4; |
| levelScope[i] = (levelProperties[i] & 0x0c) >> 2; |
| levelType[i] = (levelProperties[i] & 0x03); |
| } else { |
| levelProperties[i] = 0; |
| levelReserved[i] = 0; |
| levelScope[i] = 0; |
| levelType[i] = 0; |
| } |
| levelLineSize[i] = 0; |
| levelTotalSize[i] = 0; |
| levelAssociativity[i] = 0; |
| } |
| |
| tty->cr(); |
| tty->print_cr("------------------------------------"); |
| tty->print_cr("--- Cache Topology Information ---"); |
| tty->print_cr("------------------------------------"); |
| for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) { |
| tty->print_cr(" Cache Level %d: <scope> %s | <type> %s", |
| i+1, levelScopeText[levelScope[i]], levelTypeText[levelType[i]]); |
| } |
| |
| // Get D-cache details per level. |
| _Dcache_lineSize = 0; |
| lineSize_mismatch = false; |
| print_something = false; |
| typeIndication = 0; // 0..1 (D-Cache, I-Cache) |
| for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) { |
| if ((levelType[i] == 0) || (levelType[i] == 2)) { |
| print_something = true; |
| |
| // Get cache line size of level i. |
| attributeIndication = 1; |
| functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); |
| levelLineSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); |
| |
| // Get cache total size of level i. |
| attributeIndication = 2; |
| functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); |
| levelTotalSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); |
| |
| // Get cache associativity of level i. |
| attributeIndication = 3; |
| functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); |
| levelAssociativity[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); |
| |
| _Dcache_lineSize = _Dcache_lineSize == 0 ? levelLineSize[i] : _Dcache_lineSize; |
| lineSize_mismatch = lineSize_mismatch || (_Dcache_lineSize != levelLineSize[i]); |
| } else { |
| levelLineSize[i] = 0; |
| } |
| } |
| |
| if (print_something) { |
| tty->cr(); |
| tty->print_cr("------------------------------------"); |
| tty->print_cr("--- D-Cache Detail Information ---"); |
| tty->print_cr("------------------------------------"); |
| if (lineSize_mismatch) { |
| tty->print_cr("WARNING: D-Cache line size mismatch!"); |
| } |
| for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) { |
| if (levelLineSize[i] > 0) { |
| tty->print_cr(" D-Cache Level %d: line size = %4d, total size = %6dKB, associativity = %2d", |
| i+1, levelLineSize[i], levelTotalSize[i]/(int)K, levelAssociativity[i]); |
| } |
| } |
| } |
| |
| // Get I-cache details per level. |
| _Icache_lineSize = 0; |
| lineSize_mismatch = false; |
| print_something = false; |
| typeIndication = 1; // 0..1 (D-Cache, I-Cache) |
| for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) { |
| if ((levelType[i] == 0) || (levelType[i] == 1)) { |
| print_something = true; |
| |
| // Get cache line size of level i. |
| attributeIndication = 1; |
| functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); |
| levelLineSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); |
| |
| // Get cache total size of level i. |
| attributeIndication = 2; |
| functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); |
| levelTotalSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); |
| |
| // Get cache associativity of level i. |
| attributeIndication = 3; |
| functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); |
| levelAssociativity[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); |
| |
| _Icache_lineSize = _Icache_lineSize == 0 ? levelLineSize[i] : _Icache_lineSize; |
| lineSize_mismatch = lineSize_mismatch || (_Icache_lineSize != levelLineSize[i]); |
| } else { |
| levelLineSize[i] = 0; |
| } |
| } |
| |
| if (print_something) { |
| tty->cr(); |
| tty->print_cr("------------------------------------"); |
| tty->print_cr("--- I-Cache Detail Information ---"); |
| tty->print_cr("------------------------------------"); |
| if (lineSize_mismatch) { |
| tty->print_cr("WARNING: I-Cache line size mismatch!"); |
| } |
| for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) { |
| if (levelLineSize[i] > 0) { |
| tty->print_cr(" I-Cache Level %d: line size = %4d, total size = %6dKB, associativity = %2d", |
| i+1, levelLineSize[i], levelTotalSize[i]/(int)K, levelAssociativity[i]); |
| } |
| } |
| } |
| |
| // Get D/I-cache details per level. |
| lineSize_mismatch = false; |
| print_something = false; |
| typeIndication = 0; // 0..1 (D-Cache, I-Cache) |
| for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) { |
| if (levelType[i] == 3) { |
| print_something = true; |
| |
| // Get cache line size of level i. |
| attributeIndication = 1; |
| functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); |
| levelLineSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); |
| |
| // Get cache total size of level i. |
| attributeIndication = 2; |
| functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); |
| levelTotalSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); |
| |
| // Get cache associativity of level i. |
| attributeIndication = 3; |
| functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication); |
| levelAssociativity[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode); |
| |
| _Dcache_lineSize = _Dcache_lineSize == 0 ? levelLineSize[i] : _Dcache_lineSize; |
| _Icache_lineSize = _Icache_lineSize == 0 ? levelLineSize[i] : _Icache_lineSize; |
| lineSize_mismatch = lineSize_mismatch || (_Dcache_lineSize != levelLineSize[i]) |
| || (_Icache_lineSize != levelLineSize[i]); |
| } else { |
| levelLineSize[i] = 0; |
| } |
| } |
| |
| if (print_something) { |
| tty->cr(); |
| tty->print_cr("--------------------------------------"); |
| tty->print_cr("--- D/I-Cache Detail Information ---"); |
| tty->print_cr("--------------------------------------"); |
| if (lineSize_mismatch) { |
| tty->print_cr("WARNING: D/I-Cache line size mismatch!"); |
| } |
| for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) { |
| if (levelLineSize[i] > 0) { |
| tty->print_cr(" D/I-Cache Level %d: line size = %4d, total size = %6dKB, associativity = %2d", |
| i+1, levelLineSize[i], levelTotalSize[i]/(int)K, levelAssociativity[i]); |
| } |
| } |
| } |
| tty->cr(); |
| } |
| return; |
| } |
| |
| unsigned long VM_Version::z_SIGILL() { |
| unsigned long ZeroBuffer = 0; |
| unsigned long work; |
| asm( |
| " LA %[work],%[buffer] \n\t" // Load address of buffer. |
| " LARL 14,+6 \n\t" // Load address of faulting instruction. |
| " BCR 15,%[work] \n\t" // Branch into buffer, execute whatever is in there. |
| : [buffer] "+Q" (ZeroBuffer) /* outputs */ |
| , [work] "=&a" (work) /* outputs */ |
| : /* inputs */ |
| : "cc" /* clobbered */ |
| ); |
| return ZeroBuffer; |
| } |
| |
| unsigned long VM_Version::z_SIGSEGV() { |
| unsigned long ZeroBuffer = 0; |
| unsigned long work; |
| asm( |
| " LG %[work],%[buffer] \n\t" // Load zero address. |
| " STG %[work],0(,%[work])\n\t" // Store to address zero. |
| : [buffer] "+Q" (ZeroBuffer) /* outputs */ |
| , [work] "=&a" (work) /* outputs */ |
| : /* inputs */ |
| : "cc" /* clobbered */ |
| ); |
| return ZeroBuffer; |
| } |
| |
