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Jit.cpp
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Jit.cpp
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/*******************************************************************************
* Copyright (c) 2014, 2019 IBM Corp. and others
*
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which accompanies this
* distribution and is available at https://www.eclipse.org/legal/epl-2.0/
* or the Apache License, Version 2.0 which accompanies this distribution and
* is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* This Source Code may also be made available under the following
* Secondary Licenses when the conditions for such availability set
* forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
* General Public License, version 2 with the GNU Classpath
* Exception [1] and GNU General Public License, version 2 with the
* OpenJDK Assembly Exception [2].
*
* [1] https://www.gnu.org/software/classpath/license.html
* [2] http://openjdk.java.net/legal/assembly-exception.html
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
*******************************************************************************/
#include <stdio.h>
#include "codegen/CodeGenerator.hpp"
#include "compile/CompilationTypes.hpp"
#include "compile/Method.hpp"
#include "control/CompileMethod.hpp"
#include "env/CompilerEnv.hpp"
#include "env/FrontEnd.hpp"
#include "env/IO.hpp"
#include "env/RawAllocator.hpp"
#include "ilgen/IlGeneratorMethodDetails_inlines.hpp"
#include "ilgen/MethodBuilder.hpp"
#include "ilgen/TypeDictionary.hpp"
#include "runtime/CodeCache.hpp"
#include "runtime/Runtime.hpp"
#include "runtime/JBJitConfig.hpp"
extern TR_RuntimeHelperTable runtimeHelpers;
extern void setupCodeCacheParameters(int32_t *, OMR::CodeCacheCodeGenCallbacks *callBacks, int32_t *numHelpers, int32_t *CCPreLoadedCodeSize);
static void
initHelper(void *helper, TR_RuntimeHelper id)
{
#if defined(LINUXPPC64) && !defined(__LITTLE_ENDIAN__)
//Implies Big-Endian POWER.
//Helper Address is stored in a function descriptor consisting of [address, TOC, envp]
//Load out Helper address from this function descriptor.
//Little-Endian POWER can directly load the helper address, no function descriptor used.
helper = *(void **)helper;
#endif
runtimeHelpers.setAddress(id, helper);
}
static void
initializeAllHelpers(JitBuilder::JitConfig *jitConfig, TR_RuntimeHelper *helperIDs, void **helperAddresses, int32_t numHelpers)
{
initializeJitRuntimeHelperTable(false);
if (numHelpers > 0)
{
for (int32_t h=0;h < numHelpers;h++)
initHelper(helperAddresses[h], helperIDs[h]);
#if defined(LINUXPPC64) && !defined(__LITTLE_ENDIAN__)
jitConfig->setInterpreterTOC(((size_t *)helperAddresses[0])[1]);
#endif
}
}
static void
initializeCodeCache(TR::CodeCacheManager & codeCacheManager)
{
TR::CodeCacheConfig &codeCacheConfig = codeCacheManager.codeCacheConfig();
codeCacheConfig._codeCacheKB = 128;
// setupCodeCacheParameters must stay before JitBuilder::CodeCacheManager::initialize() because it needs trampolineCodeSize
setupCodeCacheParameters(&codeCacheConfig._trampolineCodeSize,
&codeCacheConfig._mccCallbacks,
&codeCacheConfig._numOfRuntimeHelpers,
&codeCacheConfig._CCPreLoadedCodeSize);
codeCacheConfig._needsMethodTrampolines = false;
codeCacheConfig._trampolineSpacePercentage = 5;
codeCacheConfig._allowedToGrowCache = true;
codeCacheConfig._lowCodeCacheThreshold = 0;
codeCacheConfig._verboseCodeCache = false;
codeCacheConfig._verbosePerformance = false;
codeCacheConfig._verboseReclamation = false;
codeCacheConfig._doSanityChecks = false;
codeCacheConfig._codeCacheTotalKB = 16*1024;
codeCacheConfig._codeCacheKB = 128;
codeCacheConfig._codeCachePadKB = 0;
codeCacheConfig._codeCacheAlignment = 32;
codeCacheConfig._codeCacheFreeBlockRecylingEnabled = true;
codeCacheConfig._largeCodePageSize = 0;
codeCacheConfig._largeCodePageFlags = 0;
codeCacheConfig._maxNumberOfCodeCaches = 96;
codeCacheConfig._canChangeNumCodeCaches = true;
codeCacheConfig._emitExecutableELF = TR::Options::getCmdLineOptions()->getOption(TR_PerfTool)
|| TR::Options::getCmdLineOptions()->getOption(TR_EmitExecutableELFFile);
codeCacheConfig._emitRelocatableELF = TR::Options::getCmdLineOptions()->getOption(TR_EmitRelocatableELFFile);
TR::CodeCache *firstCodeCache = codeCacheManager.initialize(true, 1);
}
// helperIDs is an array of helper id corresponding to the addresses passed in "helpers"
// helpers is an array of pointers to helpers that compiled code needs to reference
// currently this argument isn't needed by anything so this function can stay internal
// options is any JIT option string passed in to globally influence compilation
bool
initializeJitBuilder(TR_RuntimeHelper *helperIDs, void **helperAddresses, int32_t numHelpers, char *options)
{
// Create a bootstrap raw allocator.
//
TR::RawAllocator rawAllocator;
try
{
// Allocate the host environment structure
//
TR::Compiler = new (rawAllocator) TR::CompilerEnv(rawAllocator, TR::PersistentAllocatorKit(rawAllocator));
}
catch (const std::bad_alloc& ba)
{
return false;
}
TR::Compiler->initialize();
// --------------------------------------------------------------------------
static JitBuilder::FrontEnd fe;
auto jitConfig = fe.jitConfig();
initializeAllHelpers(jitConfig, helperIDs, helperAddresses, numHelpers);
if (commonJitInit(fe, options) < 0)
return false;
initializeCodeCache(fe.codeCacheManager());
return true;
}
/*
_____ _ _
| ____|_ _| |_ ___ _ __ _ __ __ _| |
| _| \ \/ / __/ _ \ '__| '_ \ / _` | |
| |___ > <| || __/ | | | | | (_| | |
|_____/_/\_\\__\___|_| |_| |_|\__,_|_|
___ _ __
|_ _|_ __ | |_ ___ _ __ / _| __ _ ___ ___
| || '_ \| __/ _ \ '__| |_ / _` |/ __/ _ \
| || | | | || __/ | | _| (_| | (_| __/
|___|_| |_|\__\___|_| |_| \__,_|\___\___|
*/
// An individual program should link statically against JitBuilder, then call:
// initializeJit() or initializeJitWithOptions() to initialize the Jit
// compileMethodBuilder() as many times as needed to create compiled code
// shuwdownJit() when the test is complete
//
bool
internal_initializeJitWithOptions(char *options)
{
return initializeJitBuilder(0, 0, 0, options);
}
bool
internal_initializeJit()
{
return initializeJitBuilder(0, 0, 0, (char *)"-Xjit:acceptHugeMethods,enableBasicBlockHoisting,omitFramePointer,useILValidator");
}
int32_t
internal_compileMethodBuilder(TR::MethodBuilder *m, void **entry)
{
auto rc = m->Compile(entry);
#if defined(J9ZOS390)
struct FunctionDescriptor
{
uint64_t environment;
void* func;
};
FunctionDescriptor* fd = new FunctionDescriptor();
fd->environment = 0;
fd->func = *entry;
*entry = (void*) fd;
#endif
return rc;
}
void
internal_shutdownJit()
{
auto fe = JitBuilder::FrontEnd::instance();
TR::CodeCacheManager &codeCacheManager = fe->codeCacheManager();
codeCacheManager.destroy();
}