compiled_method.cc revision 2535abe7d1fcdd0e6aca782b1f1932a703ed50a4 
1/*
2 * Copyright (C) 2011 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#include "compiled_method.h"
18#include "driver/compiler_driver.h"
19
20namespace art {
21
22CompiledCode::CompiledCode(CompilerDriver* compiler_driver, InstructionSet instruction_set,
23                           const ArrayRef<const uint8_t>& quick_code, bool owns_code_array)
24    : compiler_driver_(compiler_driver), instruction_set_(instruction_set),
25      owns_code_array_(owns_code_array), quick_code_(nullptr) {
26  SetCode(&quick_code);
27}
28
29void CompiledCode::SetCode(const ArrayRef<const uint8_t>* quick_code) {
30  if (quick_code != nullptr) {
31    CHECK(!quick_code->empty());
32    if (owns_code_array_) {
33      // If we are supposed to own the code, don't deduplicate it.
34      CHECK(quick_code_ == nullptr);
35      quick_code_ = new SwapVector<uint8_t>(quick_code->begin(), quick_code->end(),
36                                            compiler_driver_->GetSwapSpaceAllocator());
37    } else {
38      quick_code_ = compiler_driver_->DeduplicateCode(*quick_code);
39    }
40  }
41}
42
43CompiledCode::~CompiledCode() {
44  if (owns_code_array_) {
45    delete quick_code_;
46  }
47}
48
49bool CompiledCode::operator==(const CompiledCode& rhs) const {
50  if (quick_code_ != nullptr) {
51    if (rhs.quick_code_ == nullptr) {
52      return false;
53    } else if (quick_code_->size() != rhs.quick_code_->size()) {
54      return false;
55    } else {
56      return std::equal(quick_code_->begin(), quick_code_->end(), rhs.quick_code_->begin());
57    }
58  }
59  return (rhs.quick_code_ == nullptr);
60}
61
62size_t CompiledCode::AlignCode(size_t offset) const {
63  return AlignCode(offset, instruction_set_);
64}
65
66size_t CompiledCode::AlignCode(size_t offset, InstructionSet instruction_set) {
67  return RoundUp(offset, GetInstructionSetAlignment(instruction_set));
68}
69
70size_t CompiledCode::CodeDelta() const {
71  return CodeDelta(instruction_set_);
72}
73
74size_t CompiledCode::CodeDelta(InstructionSet instruction_set) {
75  switch (instruction_set) {
76    case kArm:
77    case kArm64:
78    case kMips:
79    case kMips64:
80    case kX86:
81    case kX86_64:
82      return 0;
83    case kThumb2: {
84      // +1 to set the low-order bit so a BLX will switch to Thumb mode
85      return 1;
86    }
87    default:
88      LOG(FATAL) << "Unknown InstructionSet: " << instruction_set;
89      return 0;
90  }
91}
92
93const void* CompiledCode::CodePointer(const void* code_pointer,
94                                      InstructionSet instruction_set) {
95  switch (instruction_set) {
96    case kArm:
97    case kArm64:
98    case kMips:
99    case kMips64:
100    case kX86:
101    case kX86_64:
102      return code_pointer;
103    case kThumb2: {
104      uintptr_t address = reinterpret_cast<uintptr_t>(code_pointer);
105      // Set the low-order bit so a BLX will switch to Thumb mode
106      address |= 0x1;
107      return reinterpret_cast<const void*>(address);
108    }
109    default:
110      LOG(FATAL) << "Unknown InstructionSet: " << instruction_set;
111      return NULL;
112  }
113}
114
115const std::vector<uint32_t>& CompiledCode::GetOatdataOffsetsToCompliledCodeOffset() const {
116  CHECK_NE(0U, oatdata_offsets_to_compiled_code_offset_.size());
117  return oatdata_offsets_to_compiled_code_offset_;
118}
119
120void CompiledCode::AddOatdataOffsetToCompliledCodeOffset(uint32_t offset) {
121  oatdata_offsets_to_compiled_code_offset_.push_back(offset);
122}
123
124CompiledMethod::CompiledMethod(CompilerDriver* driver,
125                               InstructionSet instruction_set,
126                               const ArrayRef<const uint8_t>& quick_code,
127                               const size_t frame_size_in_bytes,
128                               const uint32_t core_spill_mask,
129                               const uint32_t fp_spill_mask,
130                               DefaultSrcMap* src_mapping_table,
131                               const ArrayRef<const uint8_t>& mapping_table,
132                               const ArrayRef<const uint8_t>& vmap_table,
133                               const ArrayRef<const uint8_t>& native_gc_map,
134                               const ArrayRef<const uint8_t>& cfi_info,
135                               const ArrayRef<LinkerPatch>& patches)
136    : CompiledCode(driver, instruction_set, quick_code, !driver->DedupeEnabled()),
137      owns_arrays_(!driver->DedupeEnabled()),
138      frame_size_in_bytes_(frame_size_in_bytes), core_spill_mask_(core_spill_mask),
139      fp_spill_mask_(fp_spill_mask),
140      patches_(patches.begin(), patches.end(), driver->GetSwapSpaceAllocator()) {
141  if (owns_arrays_) {
142    if (src_mapping_table == nullptr) {
143      src_mapping_table_ = new SwapSrcMap(driver->GetSwapSpaceAllocator());
144    } else {
145      src_mapping_table->Arrange();
146      src_mapping_table_ = new SwapSrcMap(src_mapping_table->begin(), src_mapping_table->end(),
147                                          driver->GetSwapSpaceAllocator());
148    }
149    mapping_table_ = mapping_table.empty() ?
150        nullptr : new SwapVector<uint8_t>(mapping_table.begin(), mapping_table.end(),
151                                          driver->GetSwapSpaceAllocator());
152    vmap_table_ = new SwapVector<uint8_t>(vmap_table.begin(), vmap_table.end(),
153                                          driver->GetSwapSpaceAllocator());
154    gc_map_ = native_gc_map.empty() ? nullptr :
155        new SwapVector<uint8_t>(native_gc_map.begin(), native_gc_map.end(),
156                                driver->GetSwapSpaceAllocator());
157    cfi_info_ = cfi_info.empty() ? nullptr :
158        new SwapVector<uint8_t>(cfi_info.begin(), cfi_info.end(), driver->GetSwapSpaceAllocator());
159  } else {
160    src_mapping_table_ = src_mapping_table == nullptr ?
161        driver->DeduplicateSrcMappingTable(ArrayRef<SrcMapElem>()) :
162        driver->DeduplicateSrcMappingTable(ArrayRef<SrcMapElem>(src_mapping_table->Arrange()));
163    mapping_table_ = mapping_table.empty() ?
164        nullptr : driver->DeduplicateMappingTable(mapping_table);
165    vmap_table_ = driver->DeduplicateVMapTable(vmap_table);
166    gc_map_ = native_gc_map.empty() ? nullptr : driver->DeduplicateGCMap(native_gc_map);
167    cfi_info_ = cfi_info.empty() ? nullptr : driver->DeduplicateCFIInfo(cfi_info);
168  }
169}
170
171CompiledMethod* CompiledMethod::SwapAllocCompiledMethod(
172    CompilerDriver* driver,
173    InstructionSet instruction_set,
174    const ArrayRef<const uint8_t>& quick_code,
175    const size_t frame_size_in_bytes,
176    const uint32_t core_spill_mask,
177    const uint32_t fp_spill_mask,
178    DefaultSrcMap* src_mapping_table,
179    const ArrayRef<const uint8_t>& mapping_table,
180    const ArrayRef<const uint8_t>& vmap_table,
181    const ArrayRef<const uint8_t>& native_gc_map,
182    const ArrayRef<const uint8_t>& cfi_info,
183    const ArrayRef<LinkerPatch>& patches) {
184  SwapAllocator<CompiledMethod> alloc(driver->GetSwapSpaceAllocator());
185  CompiledMethod* ret = alloc.allocate(1);
186  alloc.construct(ret, driver, instruction_set, quick_code, frame_size_in_bytes, core_spill_mask,
187                  fp_spill_mask, src_mapping_table, mapping_table, vmap_table, native_gc_map,
188                  cfi_info, patches);
189  return ret;
190}
191
192CompiledMethod* CompiledMethod::SwapAllocCompiledMethodStackMap(
193    CompilerDriver* driver,
194    InstructionSet instruction_set,
195    const ArrayRef<const uint8_t>& quick_code,
196    const size_t frame_size_in_bytes,
197    const uint32_t core_spill_mask,
198    const uint32_t fp_spill_mask,
199    const ArrayRef<const uint8_t>& stack_map) {
200  SwapAllocator<CompiledMethod> alloc(driver->GetSwapSpaceAllocator());
201  CompiledMethod* ret = alloc.allocate(1);
202  alloc.construct(ret, driver, instruction_set, quick_code, frame_size_in_bytes, core_spill_mask,
203                  fp_spill_mask, nullptr, ArrayRef<const uint8_t>(), stack_map,
204                  ArrayRef<const uint8_t>(), ArrayRef<const uint8_t>(), ArrayRef<LinkerPatch>());
205  return ret;
206}
207
208CompiledMethod* CompiledMethod::SwapAllocCompiledMethodCFI(
209    CompilerDriver* driver,
210    InstructionSet instruction_set,
211    const ArrayRef<const uint8_t>& quick_code,
212    const size_t frame_size_in_bytes,
213    const uint32_t core_spill_mask,
214    const uint32_t fp_spill_mask,
215    const ArrayRef<const uint8_t>& cfi_info) {
216  SwapAllocator<CompiledMethod> alloc(driver->GetSwapSpaceAllocator());
217  CompiledMethod* ret = alloc.allocate(1);
218  alloc.construct(ret, driver, instruction_set, quick_code, frame_size_in_bytes, core_spill_mask,
219                  fp_spill_mask, nullptr, ArrayRef<const uint8_t>(),
220                  ArrayRef<const uint8_t>(), ArrayRef<const uint8_t>(),
221                  cfi_info, ArrayRef<LinkerPatch>());
222  return ret;
223}
224
225
226void CompiledMethod::ReleaseSwapAllocatedCompiledMethod(CompilerDriver* driver, CompiledMethod* m) {
227  SwapAllocator<CompiledMethod> alloc(driver->GetSwapSpaceAllocator());
228  alloc.destroy(m);
229  alloc.deallocate(m, 1);
230}
231
232CompiledMethod::~CompiledMethod() {
233  if (owns_arrays_) {
234    delete src_mapping_table_;
235    delete mapping_table_;
236    delete vmap_table_;
237    delete gc_map_;
238    delete cfi_info_;
239  }
240}
241
242}  // namespace art
243