view src/share/vm/shark/sharkMemoryManager.cpp @ 10185:d50cc62e94ff

8012715: G1: GraphKit accesses PtrQueue::_index as int but is size_t Summary: In graphKit INT operations were generated to access PtrQueue::_index which has type size_t. This is 64 bit on 64-bit machines. No problems occur on little endian machines as long as the index fits into 32 bit, but on big endian machines the upper part is read, which is zero. This leads to unnecessary branches to the slow path in the runtime. Reviewed-by: twisti, johnc Contributed-by: Martin Doerr <martin.doerr@sap.com>
author johnc
date Wed, 24 Apr 2013 14:48:43 -0700
parents 2cd5e15048e6
children 81ccf2c854c7
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/*
 * Copyright (c) 1999, 2010, 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 "shark/llvmHeaders.hpp"
#include "shark/sharkEntry.hpp"
#include "shark/sharkMemoryManager.hpp"

using namespace llvm;

void SharkMemoryManager::AllocateGOT() {
  mm()->AllocateGOT();
}

unsigned char* SharkMemoryManager::getGOTBase() const {
  return mm()->getGOTBase();
}

unsigned char* SharkMemoryManager::allocateStub(const GlobalValue* F,
                                                unsigned StubSize,
                                                unsigned Alignment) {
  return mm()->allocateStub(F, StubSize, Alignment);
}

unsigned char* SharkMemoryManager::startFunctionBody(const Function* F,
                                                     uintptr_t& ActualSize) {
  return mm()->startFunctionBody(F, ActualSize);
}

void SharkMemoryManager::endFunctionBody(const Function* F,
                                         unsigned char* FunctionStart,
                                         unsigned char* FunctionEnd) {
  mm()->endFunctionBody(F, FunctionStart, FunctionEnd);

  SharkEntry *entry = get_entry_for_function(F);
  if (entry != NULL)
    entry->set_code_limit(FunctionEnd);
}

unsigned char* SharkMemoryManager::startExceptionTable(const Function* F,
                                                       uintptr_t& ActualSize) {
  return mm()->startExceptionTable(F, ActualSize);
}

void SharkMemoryManager::endExceptionTable(const Function* F,
                                           unsigned char* TableStart,
                                           unsigned char* TableEnd,
                                           unsigned char* FrameRegister) {
  mm()->endExceptionTable(F, TableStart, TableEnd, FrameRegister);
}

void SharkMemoryManager::setMemoryWritable() {
  mm()->setMemoryWritable();
}

void SharkMemoryManager::setMemoryExecutable() {
  mm()->setMemoryExecutable();
}

void SharkMemoryManager::deallocateExceptionTable(void *ptr) {
  mm()->deallocateExceptionTable(ptr);
}

void SharkMemoryManager::deallocateFunctionBody(void *ptr) {
  mm()->deallocateFunctionBody(ptr);
}

uint8_t* SharkMemoryManager::allocateGlobal(uintptr_t Size,
                                            unsigned int Alignment) {
  return mm()->allocateGlobal(Size, Alignment);
}

void* SharkMemoryManager::getPointerToNamedFunction(const std::string &Name, bool AbortOnFailure) {
  return mm()->getPointerToNamedFunction(Name, AbortOnFailure);
}

uint8_t* SharkMemoryManager::allocateCodeSection(uintptr_t Size, unsigned Alignment, unsigned SectionID) {
  return mm()->allocateCodeSection(Size, Alignment, SectionID);
}

uint8_t* SharkMemoryManager::allocateDataSection(uintptr_t Size, unsigned Alignment, unsigned SectionID) {
  return mm()->allocateDataSection(Size, Alignment, SectionID);
}

void SharkMemoryManager::setPoisonMemory(bool poison) {
  mm()->setPoisonMemory(poison);
}

unsigned char *SharkMemoryManager::allocateSpace(intptr_t Size,
                                                 unsigned int Alignment) {
  return mm()->allocateSpace(Size, Alignment);
}