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/*
* Copyright (c) 1997, 2022, Oracle and/or its affiliates. All rights reserved.
* Copyright 2009 Red Hat, Inc.
* 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 "asm/assembler.inline.hpp"
#include "memory/resourceArea.hpp"
#include "runtime/arguments.hpp"
#include "runtime/globals_extension.hpp"
#include "runtime/java.hpp"
#include "runtime/stubCodeGenerator.hpp"
#include "runtime/vm_version.hpp"
void VM_Version::initialize() {
// This machine does not allow unaligned memory accesses
if (! FLAG_IS_DEFAULT(UseUnalignedAccesses)) {
warning("Unaligned memory access is not available on this CPU");
FLAG_SET_DEFAULT(UseUnalignedAccesses, false);
}
// Disable prefetching for Zero
if (! FLAG_IS_DEFAULT(AllocatePrefetchDistance)) {
warning("Prefetching is not available for a Zero VM");
}
FLAG_SET_DEFAULT(AllocatePrefetchDistance, 0);
// Disable lock diagnostics for Zero
if (DiagnoseSyncOnValueBasedClasses != 0) {
warning("Lock diagnostics is not available for a Zero VM");
FLAG_SET_DEFAULT(DiagnoseSyncOnValueBasedClasses, 0);
}
if (UseAESIntrinsics) {
warning("AES intrinsics are not available on this CPU");
FLAG_SET_DEFAULT(UseAESIntrinsics, false);
}
if (UseAES) {
warning("AES instructions are not available on this CPU");
FLAG_SET_DEFAULT(UseAES, false);
}
if (UseAESCTRIntrinsics) {
warning("AES/CTR intrinsics are not available on this CPU");
FLAG_SET_DEFAULT(UseAESCTRIntrinsics, false);
}
if (UseFMA) {
warning("FMA instructions are not available on this CPU");
FLAG_SET_DEFAULT(UseFMA, false);
}
if (UseMD5Intrinsics) {
warning("MD5 intrinsics are not available on this CPU");
FLAG_SET_DEFAULT(UseMD5Intrinsics, false);
}
if (UseSHA) {
warning("SHA instructions are not available on this CPU");
FLAG_SET_DEFAULT(UseSHA, false);
}
if (UseSHA1Intrinsics) {
warning("Intrinsics for SHA-1 crypto hash functions not available on this CPU.");
FLAG_SET_DEFAULT(UseSHA1Intrinsics, false);
}
if (UseSHA256Intrinsics) {
warning("Intrinsics for SHA-224 and SHA-256 crypto hash functions not available on this CPU.");
FLAG_SET_DEFAULT(UseSHA256Intrinsics, false);
}
if (UseSHA512Intrinsics) {
warning("Intrinsics for SHA-384 and SHA-512 crypto hash functions not available on this CPU.");
FLAG_SET_DEFAULT(UseSHA512Intrinsics, false);
}
if (UseSHA3Intrinsics) {
warning("Intrinsics for SHA3-224, SHA3-256, SHA3-384 and SHA3-512 crypto hash functions not available on this CPU.");
FLAG_SET_DEFAULT(UseSHA3Intrinsics, false);
}
if (UseCRC32Intrinsics) {
warning("CRC32 intrinsics are not available on this CPU");
FLAG_SET_DEFAULT(UseCRC32Intrinsics, false);
}
if (UseAdler32Intrinsics) {
warning("Adler32 intrinsics are not available on this CPU");
FLAG_SET_DEFAULT(UseAdler32Intrinsics, false);
}
if (UseVectorizedMismatchIntrinsic) {
warning("vectorizedMismatch intrinsic is not available on this CPU.");
FLAG_SET_DEFAULT(UseVectorizedMismatchIntrinsic, false);
}
// Enable error context decoding on known platforms
#if defined(IA32) || defined(AMD64) || defined(ARM) || \
defined(AARCH64) || defined(PPC) || defined(RISCV) || \
defined(S390)
if (FLAG_IS_DEFAULT(DecodeErrorContext)) {
FLAG_SET_DEFAULT(DecodeErrorContext, true);
}
#else
UNSUPPORTED_OPTION(DecodeErrorContext);
#endif
// Not implemented
UNSUPPORTED_OPTION(UseCompiler);
#ifdef ASSERT
UNSUPPORTED_OPTION(CountCompiledCalls);
#endif
}
void VM_Version::initialize_cpu_information(void) {
// do nothing if cpu info has been initialized
if (_initialized) {
return;
}
_no_of_cores = os::processor_count();
_no_of_threads = _no_of_cores;
_no_of_sockets = _no_of_cores;
snprintf(_cpu_name, CPU_TYPE_DESC_BUF_SIZE - 1, "Zero VM");
snprintf(_cpu_desc, CPU_DETAILED_DESC_BUF_SIZE, "%s", _features_string);
_initialized = true;
}
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