Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/shark/sharkCodeBuffer.hpp@d2ede61b7a12 (annotated)
src/share/vm/shark/sharkCodeBuffer.hpp
Wed, 11 Aug 2010 05:51:21 -0700
- author
- twisti
- date
- Wed, 11 Aug 2010 05:51:21 -0700
- changeset 2047
- d2ede61b7a12
- child 2314
- f95d63e2154a
- permissions
- -rw-r--r--
6976186: integrate Shark HotSpot changes
Summary: Shark is a JIT compiler for Zero that uses the LLVM compiler infrastructure.
Reviewed-by: kvn, twisti
Contributed-by: Gary Benson <gbenson@redhat.com>
| twisti@2047 | 1 | /* |
| twisti@2047 | 2 | * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved. |
| twisti@2047 | 3 | * Copyright 2009 Red Hat, Inc. |
| twisti@2047 | 4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| twisti@2047 | 5 | * |
| twisti@2047 | 6 | * This code is free software; you can redistribute it and/or modify it |
| twisti@2047 | 7 | * under the terms of the GNU General Public License version 2 only, as |
| twisti@2047 | 8 | * published by the Free Software Foundation. |
| twisti@2047 | 9 | * |
| twisti@2047 | 10 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| twisti@2047 | 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| twisti@2047 | 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| twisti@2047 | 13 | * version 2 for more details (a copy is included in the LICENSE file that |
| twisti@2047 | 14 | * accompanied this code). |
| twisti@2047 | 15 | * |
| twisti@2047 | 16 | * You should have received a copy of the GNU General Public License version |
| twisti@2047 | 17 | * 2 along with this work; if not, write to the Free Software Foundation, |
| twisti@2047 | 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| twisti@2047 | 19 | * |
| twisti@2047 | 20 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| twisti@2047 | 21 | * or visit www.oracle.com if you need additional information or have any |
| twisti@2047 | 22 | * questions. |
| twisti@2047 | 23 | * |
| twisti@2047 | 24 | */ |
| twisti@2047 | 25 | |
| twisti@2047 | 26 | class SharkCodeBuffer : public StackObj { |
| twisti@2047 | 27 | public: |
| twisti@2047 | 28 | SharkCodeBuffer(MacroAssembler* masm) |
| twisti@2047 | 29 | : _masm(masm), _base_pc(NULL) {} |
| twisti@2047 | 30 | |
| twisti@2047 | 31 | private: |
| twisti@2047 | 32 | MacroAssembler* _masm; |
| twisti@2047 | 33 | llvm::Value* _base_pc; |
| twisti@2047 | 34 | |
| twisti@2047 | 35 | private: |
| twisti@2047 | 36 | MacroAssembler* masm() const { |
| twisti@2047 | 37 | return _masm; |
| twisti@2047 | 38 | } |
| twisti@2047 | 39 | |
| twisti@2047 | 40 | public: |
| twisti@2047 | 41 | llvm::Value* base_pc() const { |
| twisti@2047 | 42 | return _base_pc; |
| twisti@2047 | 43 | } |
| twisti@2047 | 44 | void set_base_pc(llvm::Value* base_pc) { |
| twisti@2047 | 45 | assert(_base_pc == NULL, "only do this once"); |
| twisti@2047 | 46 | _base_pc = base_pc; |
| twisti@2047 | 47 | } |
| twisti@2047 | 48 | |
| twisti@2047 | 49 | // Allocate some space in the buffer and return its address. |
| twisti@2047 | 50 | // This buffer will have been relocated by the time the method |
| twisti@2047 | 51 | // is installed, so you can't inline the result in code. |
| twisti@2047 | 52 | public: |
| twisti@2047 | 53 | void* malloc(size_t size) const { |
| twisti@2047 | 54 | masm()->align(BytesPerWord); |
| twisti@2047 | 55 | void *result = masm()->pc(); |
| twisti@2047 | 56 | masm()->advance(size); |
| twisti@2047 | 57 | return result; |
| twisti@2047 | 58 | } |
| twisti@2047 | 59 | |
| twisti@2047 | 60 | // Create a unique offset in the buffer. |
| twisti@2047 | 61 | public: |
| twisti@2047 | 62 | int create_unique_offset() const { |
| twisti@2047 | 63 | int offset = masm()->offset(); |
| twisti@2047 | 64 | masm()->advance(1); |
| twisti@2047 | 65 | return offset; |
| twisti@2047 | 66 | } |
| twisti@2047 | 67 | |
| twisti@2047 | 68 | // Inline an oop into the buffer and return its offset. |
| twisti@2047 | 69 | public: |
| twisti@2047 | 70 | int inline_oop(jobject object) const { |
| twisti@2047 | 71 | masm()->align(BytesPerWord); |
| twisti@2047 | 72 | int offset = masm()->offset(); |
| twisti@2047 | 73 | masm()->store_oop(object); |
| twisti@2047 | 74 | return offset; |
| twisti@2047 | 75 | } |
| twisti@2047 | 76 | |
| twisti@2047 | 77 | // Inline a block of non-oop data into the buffer and return its offset. |
| twisti@2047 | 78 | public: |
| twisti@2047 | 79 | int inline_data(void *src, size_t size) const { |
| twisti@2047 | 80 | masm()->align(BytesPerWord); |
| twisti@2047 | 81 | int offset = masm()->offset(); |
| twisti@2047 | 82 | void *dst = masm()->pc(); |
| twisti@2047 | 83 | masm()->advance(size); |
| twisti@2047 | 84 | memcpy(dst, src, size); |
| twisti@2047 | 85 | return offset; |
| twisti@2047 | 86 | } |
| twisti@2047 | 87 | }; |
