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src/share/vm/shark/sharkCodeBuffer.hpp@710a3c8b516e (annotated)
src/share/vm/shark/sharkCodeBuffer.hpp
Tue, 08 Aug 2017 15:57:29 +0800
- author
- aoqi
- date
- Tue, 08 Aug 2017 15:57:29 +0800
- changeset 6876
- 710a3c8b516e
- parent 4314
- 2cd5e15048e6
- parent 0
- f90c822e73f8
- permissions
- -rw-r--r--
merge
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * Copyright 2009 Red Hat, Inc. |
| aoqi@0 | 4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 5 | * |
| aoqi@0 | 6 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 7 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 8 | * published by the Free Software Foundation. |
| aoqi@0 | 9 | * |
| aoqi@0 | 10 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 13 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 14 | * accompanied this code). |
| aoqi@0 | 15 | * |
| aoqi@0 | 16 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 17 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 19 | * |
| aoqi@0 | 20 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 21 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 22 | * questions. |
| aoqi@0 | 23 | * |
| aoqi@0 | 24 | */ |
| aoqi@0 | 25 | |
| aoqi@0 | 26 | #ifndef SHARE_VM_SHARK_SHARKCODEBUFFER_HPP |
| aoqi@0 | 27 | #define SHARE_VM_SHARK_SHARKCODEBUFFER_HPP |
| aoqi@0 | 28 | |
| aoqi@0 | 29 | #include "asm/codeBuffer.hpp" |
| aoqi@0 | 30 | #include "memory/allocation.hpp" |
| aoqi@0 | 31 | #include "shark/llvmHeaders.hpp" |
| aoqi@0 | 32 | |
| aoqi@0 | 33 | class SharkCodeBuffer : public StackObj { |
| aoqi@0 | 34 | public: |
| aoqi@0 | 35 | SharkCodeBuffer(MacroAssembler* masm) |
| aoqi@0 | 36 | : _masm(masm), _base_pc(NULL) {} |
| aoqi@0 | 37 | |
| aoqi@0 | 38 | private: |
| aoqi@0 | 39 | MacroAssembler* _masm; |
| aoqi@0 | 40 | llvm::Value* _base_pc; |
| aoqi@0 | 41 | |
| aoqi@0 | 42 | private: |
| aoqi@0 | 43 | MacroAssembler* masm() const { |
| aoqi@0 | 44 | return _masm; |
| aoqi@0 | 45 | } |
| aoqi@0 | 46 | |
| aoqi@0 | 47 | public: |
| aoqi@0 | 48 | llvm::Value* base_pc() const { |
| aoqi@0 | 49 | return _base_pc; |
| aoqi@0 | 50 | } |
| aoqi@0 | 51 | void set_base_pc(llvm::Value* base_pc) { |
| aoqi@0 | 52 | assert(_base_pc == NULL, "only do this once"); |
| aoqi@0 | 53 | _base_pc = base_pc; |
| aoqi@0 | 54 | } |
| aoqi@0 | 55 | |
| aoqi@0 | 56 | // Allocate some space in the buffer and return its address. |
| aoqi@0 | 57 | // This buffer will have been relocated by the time the method |
| aoqi@0 | 58 | // is installed, so you can't inline the result in code. |
| aoqi@0 | 59 | public: |
| aoqi@0 | 60 | void* malloc(size_t size) const { |
| aoqi@0 | 61 | masm()->align(BytesPerWord); |
| aoqi@0 | 62 | void *result = masm()->pc(); |
| aoqi@0 | 63 | masm()->advance(size); |
| aoqi@0 | 64 | return result; |
| aoqi@0 | 65 | } |
| aoqi@0 | 66 | |
| aoqi@0 | 67 | // Create a unique offset in the buffer. |
| aoqi@0 | 68 | public: |
| aoqi@0 | 69 | int create_unique_offset() const { |
| aoqi@0 | 70 | int offset = masm()->offset(); |
| aoqi@0 | 71 | masm()->advance(1); |
| aoqi@0 | 72 | return offset; |
| aoqi@0 | 73 | } |
| aoqi@0 | 74 | |
| aoqi@0 | 75 | // Inline an oop into the buffer and return its offset. |
| aoqi@0 | 76 | public: |
| aoqi@0 | 77 | int inline_oop(jobject object) const { |
| aoqi@0 | 78 | masm()->align(BytesPerWord); |
| aoqi@0 | 79 | int offset = masm()->offset(); |
| aoqi@0 | 80 | masm()->store_oop(object); |
| aoqi@0 | 81 | return offset; |
| aoqi@0 | 82 | } |
| aoqi@0 | 83 | |
| aoqi@0 | 84 | int inline_Metadata(Metadata* metadata) const { |
| aoqi@0 | 85 | masm()->align(BytesPerWord); |
| aoqi@0 | 86 | int offset = masm()->offset(); |
| aoqi@0 | 87 | masm()->store_Metadata(metadata); |
| aoqi@0 | 88 | return offset; |
| aoqi@0 | 89 | } |
| aoqi@0 | 90 | |
| aoqi@0 | 91 | // Inline a block of non-oop data into the buffer and return its offset. |
| aoqi@0 | 92 | public: |
| aoqi@0 | 93 | int inline_data(void *src, size_t size) const { |
| aoqi@0 | 94 | masm()->align(BytesPerWord); |
| aoqi@0 | 95 | int offset = masm()->offset(); |
| aoqi@0 | 96 | void *dst = masm()->pc(); |
| aoqi@0 | 97 | masm()->advance(size); |
| aoqi@0 | 98 | memcpy(dst, src, size); |
| aoqi@0 | 99 | return offset; |
| aoqi@0 | 100 | } |
| aoqi@0 | 101 | }; |
| aoqi@0 | 102 | |
| aoqi@0 | 103 | #endif // SHARE_VM_SHARK_SHARKCODEBUFFER_HPP |
