| The Android Open Source Project | 89c1feb | 2008-12-17 18:03:55 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | /* |
| 18 | * DEX constant-reduction declarations. |
| 19 | */ |
| 20 | #ifndef _DALVIK_REDUCECONSTANTS |
| 21 | #define _DALVIK_REDUCECONSTANTS |
| 22 | |
| 23 | #define DVM_RC_DISABLED 0 /* no reduction, 1:1 map */ |
| 24 | #define DVM_RC_REDUCING 1 /* normal constants, reduced lookup table */ |
| 25 | #define DVM_RC_EXPANDING 2 /* reduced constants, expanded on resolve */ |
| 26 | #define DVM_RC_NO_CACHE 3 /* disable the cache (reduce to zero) */ |
| 27 | |
| 28 | enum { |
| 29 | kMapClasses = 0, |
| 30 | kMapMethods = 1, |
| 31 | kMapFields = 2, |
| 32 | kMapStrings = 3, |
| 33 | |
| 34 | kNumIndexMaps |
| 35 | }; |
| 36 | |
| 37 | struct DvmDex; |
| 38 | |
| 39 | #define kNoIndexMapping ((u2) -1) |
| 40 | |
| 41 | /* |
| 42 | * Map indices back to the original. |
| 43 | */ |
| 44 | typedef struct IndexMap { |
| 45 | int origCount; /* original size; describes range of entries in map */ |
| 46 | int newCount; /* reduced size */ |
| 47 | u2* mapToNew; /* sparse map, from "orig" to "new" */ |
| 48 | u2* mapToOld; /* dense map, from "new" back to "orig" */ |
| 49 | } IndexMap; |
| 50 | typedef struct IndexMapSet { |
| 51 | /* maps for the different sections */ |
| 52 | IndexMap map[kNumIndexMaps]; |
| 53 | |
| 54 | /* data stream that gets appended to the optimized DEX file */ |
| 55 | u4 chunkType; |
| 56 | int chunkDataLen; |
| 57 | u1* chunkData; |
| 58 | } IndexMapSet; |
| 59 | |
| 60 | /* |
| 61 | * Constant pool compaction. |
| 62 | * |
| 63 | * The caller is responsible for freeing the returned structure by |
| 64 | * calling dvmFreeIndexMap(). |
| 65 | */ |
| 66 | IndexMapSet* dvmRewriteConstants(struct DvmDex* pDvmDex); |
| 67 | |
| 68 | /* free an index map set */ |
| 69 | void dvmFreeIndexMapSet(IndexMapSet* indexMapSet); |
| 70 | |
| 71 | #endif /*_DALVIK_REDUCECONSTANTS*/ |