twisti@2047: /*
stefank@2314:  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
twisti@2047:  * Copyright 2009 Red Hat, Inc.
twisti@2047:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
twisti@2047:  *
twisti@2047:  * This code is free software; you can redistribute it and/or modify it
twisti@2047:  * under the terms of the GNU General Public License version 2 only, as
twisti@2047:  * published by the Free Software Foundation.
twisti@2047:  *
twisti@2047:  * This code is distributed in the hope that it will be useful, but WITHOUT
twisti@2047:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
twisti@2047:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
twisti@2047:  * version 2 for more details (a copy is included in the LICENSE file that
twisti@2047:  * accompanied this code).
twisti@2047:  *
twisti@2047:  * You should have received a copy of the GNU General Public License version
twisti@2047:  * 2 along with this work; if not, write to the Free Software Foundation,
twisti@2047:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
twisti@2047:  *
twisti@2047:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
twisti@2047:  * or visit www.oracle.com if you need additional information or have any
twisti@2047:  * questions.
twisti@2047:  *
twisti@2047:  */
twisti@2047: 
stefank@2314: #ifndef SHARE_VM_SHARK_SHARKCODEBUFFER_HPP
stefank@2314: #define SHARE_VM_SHARK_SHARKCODEBUFFER_HPP
stefank@2314: 
stefank@2314: #include "asm/codeBuffer.hpp"
stefank@2314: #include "memory/allocation.hpp"
stefank@2314: #include "shark/llvmHeaders.hpp"
stefank@2314: 
twisti@2047: class SharkCodeBuffer : public StackObj {
twisti@2047:  public:
twisti@2047:   SharkCodeBuffer(MacroAssembler* masm)
twisti@2047:     : _masm(masm), _base_pc(NULL) {}
twisti@2047: 
twisti@2047:  private:
twisti@2047:   MacroAssembler* _masm;
twisti@2047:   llvm::Value*    _base_pc;
twisti@2047: 
twisti@2047:  private:
twisti@2047:   MacroAssembler* masm() const {
twisti@2047:     return _masm;
twisti@2047:   }
twisti@2047: 
twisti@2047:  public:
twisti@2047:   llvm::Value* base_pc() const {
twisti@2047:     return _base_pc;
twisti@2047:   }
twisti@2047:   void set_base_pc(llvm::Value* base_pc) {
twisti@2047:     assert(_base_pc == NULL, "only do this once");
twisti@2047:     _base_pc = base_pc;
twisti@2047:   }
twisti@2047: 
twisti@2047:   // Allocate some space in the buffer and return its address.
twisti@2047:   // This buffer will have been relocated by the time the method
twisti@2047:   // is installed, so you can't inline the result in code.
twisti@2047:  public:
twisti@2047:   void* malloc(size_t size) const {
twisti@2047:     masm()->align(BytesPerWord);
twisti@2047:     void *result = masm()->pc();
twisti@2047:     masm()->advance(size);
twisti@2047:     return result;
twisti@2047:   }
twisti@2047: 
twisti@2047:   // Create a unique offset in the buffer.
twisti@2047:  public:
twisti@2047:   int create_unique_offset() const {
twisti@2047:     int offset = masm()->offset();
twisti@2047:     masm()->advance(1);
twisti@2047:     return offset;
twisti@2047:   }
twisti@2047: 
twisti@2047:   // Inline an oop into the buffer and return its offset.
twisti@2047:  public:
twisti@2047:   int inline_oop(jobject object) const {
twisti@2047:     masm()->align(BytesPerWord);
twisti@2047:     int offset = masm()->offset();
twisti@2047:     masm()->store_oop(object);
twisti@2047:     return offset;
twisti@2047:   }
twisti@2047: 
twisti@4314:   int inline_Metadata(Metadata* metadata) const {
twisti@4314:     masm()->align(BytesPerWord);
twisti@4314:     int offset = masm()->offset();
twisti@4314:     masm()->store_Metadata(metadata);
twisti@4314:     return offset;
twisti@4314:   }
twisti@4314: 
twisti@2047:   // Inline a block of non-oop data into the buffer and return its offset.
twisti@2047:  public:
twisti@2047:   int inline_data(void *src, size_t size) const {
twisti@2047:     masm()->align(BytesPerWord);
twisti@2047:     int offset = masm()->offset();
twisti@2047:     void *dst = masm()->pc();
twisti@2047:     masm()->advance(size);
twisti@2047:     memcpy(dst, src, size);
twisti@2047:     return offset;
twisti@2047:   }
twisti@2047: };
stefank@2314: 
stefank@2314: #endif // SHARE_VM_SHARK_SHARKCODEBUFFER_HPP