1612N/A/*
1879N/A * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
1612N/A * Copyright 2009 Red Hat, Inc.
1612N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1612N/A *
1612N/A * This code is free software; you can redistribute it and/or modify it
1612N/A * under the terms of the GNU General Public License version 2 only, as
1612N/A * published by the Free Software Foundation.
1612N/A *
1612N/A * This code is distributed in the hope that it will be useful, but WITHOUT
1612N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1612N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1612N/A * version 2 for more details (a copy is included in the LICENSE file that
1612N/A * accompanied this code).
1612N/A *
1612N/A * You should have received a copy of the GNU General Public License version
1612N/A * 2 along with this work; if not, write to the Free Software Foundation,
1612N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1612N/A *
1612N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1612N/A * or visit www.oracle.com if you need additional information or have any
1612N/A * questions.
1612N/A *
1612N/A */
1612N/A
1879N/A#ifndef SHARE_VM_SHARK_SHARKCODEBUFFER_HPP
1879N/A#define SHARE_VM_SHARK_SHARKCODEBUFFER_HPP
1879N/A
1879N/A#include "asm/codeBuffer.hpp"
1879N/A#include "memory/allocation.hpp"
1879N/A#include "shark/llvmHeaders.hpp"
1879N/A
1612N/Aclass SharkCodeBuffer : public StackObj {
1612N/A public:
1612N/A SharkCodeBuffer(MacroAssembler* masm)
1612N/A : _masm(masm), _base_pc(NULL) {}
1612N/A
1612N/A private:
1612N/A MacroAssembler* _masm;
1612N/A llvm::Value* _base_pc;
1612N/A
1612N/A private:
1612N/A MacroAssembler* masm() const {
1612N/A return _masm;
1612N/A }
1612N/A
1612N/A public:
1612N/A llvm::Value* base_pc() const {
1612N/A return _base_pc;
1612N/A }
1612N/A void set_base_pc(llvm::Value* base_pc) {
1612N/A assert(_base_pc == NULL, "only do this once");
1612N/A _base_pc = base_pc;
1612N/A }
1612N/A
1612N/A // Allocate some space in the buffer and return its address.
1612N/A // This buffer will have been relocated by the time the method
1612N/A // is installed, so you can't inline the result in code.
1612N/A public:
1612N/A void* malloc(size_t size) const {
1612N/A masm()->align(BytesPerWord);
1612N/A void *result = masm()->pc();
1612N/A masm()->advance(size);
1612N/A return result;
1612N/A }
1612N/A
1612N/A // Create a unique offset in the buffer.
1612N/A public:
1612N/A int create_unique_offset() const {
1612N/A int offset = masm()->offset();
1612N/A masm()->advance(1);
1612N/A return offset;
1612N/A }
1612N/A
1612N/A // Inline an oop into the buffer and return its offset.
1612N/A public:
1612N/A int inline_oop(jobject object) const {
1612N/A masm()->align(BytesPerWord);
1612N/A int offset = masm()->offset();
1612N/A masm()->store_oop(object);
1612N/A return offset;
1612N/A }
1612N/A
1612N/A // Inline a block of non-oop data into the buffer and return its offset.
1612N/A public:
1612N/A int inline_data(void *src, size_t size) const {
1612N/A masm()->align(BytesPerWord);
1612N/A int offset = masm()->offset();
1612N/A void *dst = masm()->pc();
1612N/A masm()->advance(size);
1612N/A memcpy(dst, src, size);
1612N/A return offset;
1612N/A }
1612N/A};
1879N/A
1879N/A#endif // SHARE_VM_SHARK_SHARKCODEBUFFER_HPP