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 nullptr;
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<const 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_ = new SwapSrcMap(src_mapping_table->begin(), src_mapping_table->end(),
146                                          driver->GetSwapSpaceAllocator());
147    }
148    mapping_table_ = mapping_table.empty() ?
149        nullptr : new SwapVector<uint8_t>(mapping_table.begin(), mapping_table.end(),
150                                          driver->GetSwapSpaceAllocator());
151    vmap_table_ = new SwapVector<uint8_t>(vmap_table.begin(), vmap_table.end(),
152                                          driver->GetSwapSpaceAllocator());
153    gc_map_ = native_gc_map.empty() ? nullptr :
154        new SwapVector<uint8_t>(native_gc_map.begin(), native_gc_map.end(),
155                                driver->GetSwapSpaceAllocator());
156    cfi_info_ = cfi_info.empty() ? nullptr :
157        new SwapVector<uint8_t>(cfi_info.begin(), cfi_info.end(), driver->GetSwapSpaceAllocator());
158  } else {
159    src_mapping_table_ = src_mapping_table == nullptr ?
160        driver->DeduplicateSrcMappingTable(ArrayRef<SrcMapElem>()) :
161        driver->DeduplicateSrcMappingTable(ArrayRef<SrcMapElem>(*src_mapping_table));
162    mapping_table_ = mapping_table.empty() ?
163        nullptr : driver->DeduplicateMappingTable(mapping_table);
164    vmap_table_ = driver->DeduplicateVMapTable(vmap_table);
165    gc_map_ = native_gc_map.empty() ? nullptr : driver->DeduplicateGCMap(native_gc_map);
166    cfi_info_ = cfi_info.empty() ? nullptr : driver->DeduplicateCFIInfo(cfi_info);
167  }
168}
169
170CompiledMethod* CompiledMethod::SwapAllocCompiledMethod(
171    CompilerDriver* driver,
172    InstructionSet instruction_set,
173    const ArrayRef<const uint8_t>& quick_code,
174    const size_t frame_size_in_bytes,
175    const uint32_t core_spill_mask,
176    const uint32_t fp_spill_mask,
177    DefaultSrcMap* src_mapping_table,
178    const ArrayRef<const uint8_t>& mapping_table,
179    const ArrayRef<const uint8_t>& vmap_table,
180    const ArrayRef<const uint8_t>& native_gc_map,
181    const ArrayRef<const uint8_t>& cfi_info,
182    const ArrayRef<const LinkerPatch>& patches) {
183  SwapAllocator<CompiledMethod> alloc(driver->GetSwapSpaceAllocator());
184  CompiledMethod* ret = alloc.allocate(1);
185  alloc.construct(ret, driver, instruction_set, quick_code, frame_size_in_bytes, core_spill_mask,
186                  fp_spill_mask, src_mapping_table, mapping_table, vmap_table, native_gc_map,
187                  cfi_info, patches);
188  return ret;
189}
190
191
192
193void CompiledMethod::ReleaseSwapAllocatedCompiledMethod(CompilerDriver* driver, CompiledMethod* m) {
194  SwapAllocator<CompiledMethod> alloc(driver->GetSwapSpaceAllocator());
195  alloc.destroy(m);
196  alloc.deallocate(m, 1);
197}
198
199CompiledMethod::~CompiledMethod() {
200  if (owns_arrays_) {
201    delete src_mapping_table_;
202    delete mapping_table_;
203    delete vmap_table_;
204    delete gc_map_;
205    delete cfi_info_;
206  }
207}
208
209}  // namespace art
210