1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/shark/sharkCodeBuffer.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,103 @@
1.4 +/*
1.5 + * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
1.6 + * Copyright 2009 Red Hat, Inc.
1.7 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.8 + *
1.9 + * This code is free software; you can redistribute it and/or modify it
1.10 + * under the terms of the GNU General Public License version 2 only, as
1.11 + * published by the Free Software Foundation.
1.12 + *
1.13 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.14 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.15 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.16 + * version 2 for more details (a copy is included in the LICENSE file that
1.17 + * accompanied this code).
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License version
1.20 + * 2 along with this work; if not, write to the Free Software Foundation,
1.21 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.22 + *
1.23 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.24 + * or visit www.oracle.com if you need additional information or have any
1.25 + * questions.
1.26 + *
1.27 + */
1.28 +
1.29 +#ifndef SHARE_VM_SHARK_SHARKCODEBUFFER_HPP
1.30 +#define SHARE_VM_SHARK_SHARKCODEBUFFER_HPP
1.31 +
1.32 +#include "asm/codeBuffer.hpp"
1.33 +#include "memory/allocation.hpp"
1.34 +#include "shark/llvmHeaders.hpp"
1.35 +
1.36 +class SharkCodeBuffer : public StackObj {
1.37 + public:
1.38 + SharkCodeBuffer(MacroAssembler* masm)
1.39 + : _masm(masm), _base_pc(NULL) {}
1.40 +
1.41 + private:
1.42 + MacroAssembler* _masm;
1.43 + llvm::Value* _base_pc;
1.44 +
1.45 + private:
1.46 + MacroAssembler* masm() const {
1.47 + return _masm;
1.48 + }
1.49 +
1.50 + public:
1.51 + llvm::Value* base_pc() const {
1.52 + return _base_pc;
1.53 + }
1.54 + void set_base_pc(llvm::Value* base_pc) {
1.55 + assert(_base_pc == NULL, "only do this once");
1.56 + _base_pc = base_pc;
1.57 + }
1.58 +
1.59 + // Allocate some space in the buffer and return its address.
1.60 + // This buffer will have been relocated by the time the method
1.61 + // is installed, so you can't inline the result in code.
1.62 + public:
1.63 + void* malloc(size_t size) const {
1.64 + masm()->align(BytesPerWord);
1.65 + void *result = masm()->pc();
1.66 + masm()->advance(size);
1.67 + return result;
1.68 + }
1.69 +
1.70 + // Create a unique offset in the buffer.
1.71 + public:
1.72 + int create_unique_offset() const {
1.73 + int offset = masm()->offset();
1.74 + masm()->advance(1);
1.75 + return offset;
1.76 + }
1.77 +
1.78 + // Inline an oop into the buffer and return its offset.
1.79 + public:
1.80 + int inline_oop(jobject object) const {
1.81 + masm()->align(BytesPerWord);
1.82 + int offset = masm()->offset();
1.83 + masm()->store_oop(object);
1.84 + return offset;
1.85 + }
1.86 +
1.87 + int inline_Metadata(Metadata* metadata) const {
1.88 + masm()->align(BytesPerWord);
1.89 + int offset = masm()->offset();
1.90 + masm()->store_Metadata(metadata);
1.91 + return offset;
1.92 + }
1.93 +
1.94 + // Inline a block of non-oop data into the buffer and return its offset.
1.95 + public:
1.96 + int inline_data(void *src, size_t size) const {
1.97 + masm()->align(BytesPerWord);
1.98 + int offset = masm()->offset();
1.99 + void *dst = masm()->pc();
1.100 + masm()->advance(size);
1.101 + memcpy(dst, src, size);
1.102 + return offset;
1.103 + }
1.104 +};
1.105 +
1.106 +#endif // SHARE_VM_SHARK_SHARKCODEBUFFER_HPP
