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 19 #include "driver/compiled_method_storage.h" 20 #include "driver/compiler_driver.h" 21 #include "utils/swap_space.h" 22 23 namespace art { 24 25 CompiledCode::CompiledCode(CompilerDriver* compiler_driver, 26 InstructionSet instruction_set, 27 const ArrayRef<const uint8_t>& quick_code) 28 : compiler_driver_(compiler_driver), 29 quick_code_(compiler_driver_->GetCompiledMethodStorage()->DeduplicateCode(quick_code)), 30 packed_fields_(InstructionSetField::Encode(instruction_set)) { 31 } 32 33 CompiledCode::~CompiledCode() { 34 compiler_driver_->GetCompiledMethodStorage()->ReleaseCode(quick_code_); 35 } 36 37 bool CompiledCode::operator==(const CompiledCode& rhs) const { 38 if (quick_code_ != nullptr) { 39 if (rhs.quick_code_ == nullptr) { 40 return false; 41 } else if (quick_code_->size() != rhs.quick_code_->size()) { 42 return false; 43 } else { 44 return std::equal(quick_code_->begin(), quick_code_->end(), rhs.quick_code_->begin()); 45 } 46 } 47 return (rhs.quick_code_ == nullptr); 48 } 49 50 size_t CompiledCode::AlignCode(size_t offset) const { 51 return AlignCode(offset, GetInstructionSet()); 52 } 53 54 size_t CompiledCode::AlignCode(size_t offset, InstructionSet instruction_set) { 55 return RoundUp(offset, GetInstructionSetAlignment(instruction_set)); 56 } 57 58 size_t CompiledCode::CodeDelta() const { 59 return CodeDelta(GetInstructionSet()); 60 } 61 62 size_t CompiledCode::CodeDelta(InstructionSet instruction_set) { 63 switch (instruction_set) { 64 case InstructionSet::kArm: 65 case InstructionSet::kArm64: 66 case InstructionSet::kMips: 67 case InstructionSet::kMips64: 68 case InstructionSet::kX86: 69 case InstructionSet::kX86_64: 70 return 0; 71 case InstructionSet::kThumb2: { 72 // +1 to set the low-order bit so a BLX will switch to Thumb mode 73 return 1; 74 } 75 default: 76 LOG(FATAL) << "Unknown InstructionSet: " << instruction_set; 77 return 0; 78 } 79 } 80 81 const void* CompiledCode::CodePointer(const void* code_pointer, InstructionSet instruction_set) { 82 switch (instruction_set) { 83 case InstructionSet::kArm: 84 case InstructionSet::kArm64: 85 case InstructionSet::kMips: 86 case InstructionSet::kMips64: 87 case InstructionSet::kX86: 88 case InstructionSet::kX86_64: 89 return code_pointer; 90 case InstructionSet::kThumb2: { 91 uintptr_t address = reinterpret_cast<uintptr_t>(code_pointer); 92 // Set the low-order bit so a BLX will switch to Thumb mode 93 address |= 0x1; 94 return reinterpret_cast<const void*>(address); 95 } 96 default: 97 LOG(FATAL) << "Unknown InstructionSet: " << instruction_set; 98 return nullptr; 99 } 100 } 101 102 CompiledMethod::CompiledMethod(CompilerDriver* driver, 103 InstructionSet instruction_set, 104 const ArrayRef<const uint8_t>& quick_code, 105 const size_t frame_size_in_bytes, 106 const uint32_t core_spill_mask, 107 const uint32_t fp_spill_mask, 108 const ArrayRef<const uint8_t>& method_info, 109 const ArrayRef<const uint8_t>& vmap_table, 110 const ArrayRef<const uint8_t>& cfi_info, 111 const ArrayRef<const linker::LinkerPatch>& patches) 112 : CompiledCode(driver, instruction_set, quick_code), 113 frame_size_in_bytes_(frame_size_in_bytes), 114 core_spill_mask_(core_spill_mask), 115 fp_spill_mask_(fp_spill_mask), 116 method_info_(driver->GetCompiledMethodStorage()->DeduplicateMethodInfo(method_info)), 117 vmap_table_(driver->GetCompiledMethodStorage()->DeduplicateVMapTable(vmap_table)), 118 cfi_info_(driver->GetCompiledMethodStorage()->DeduplicateCFIInfo(cfi_info)), 119 patches_(driver->GetCompiledMethodStorage()->DeduplicateLinkerPatches(patches)) { 120 } 121 122 CompiledMethod* CompiledMethod::SwapAllocCompiledMethod( 123 CompilerDriver* driver, 124 InstructionSet instruction_set, 125 const ArrayRef<const uint8_t>& quick_code, 126 const size_t frame_size_in_bytes, 127 const uint32_t core_spill_mask, 128 const uint32_t fp_spill_mask, 129 const ArrayRef<const uint8_t>& method_info, 130 const ArrayRef<const uint8_t>& vmap_table, 131 const ArrayRef<const uint8_t>& cfi_info, 132 const ArrayRef<const linker::LinkerPatch>& patches) { 133 SwapAllocator<CompiledMethod> alloc(driver->GetCompiledMethodStorage()->GetSwapSpaceAllocator()); 134 CompiledMethod* ret = alloc.allocate(1); 135 alloc.construct(ret, 136 driver, 137 instruction_set, 138 quick_code, 139 frame_size_in_bytes, 140 core_spill_mask, 141 fp_spill_mask, 142 method_info, 143 vmap_table, 144 cfi_info, patches); 145 return ret; 146 } 147 148 void CompiledMethod::ReleaseSwapAllocatedCompiledMethod(CompilerDriver* driver, CompiledMethod* m) { 149 SwapAllocator<CompiledMethod> alloc(driver->GetCompiledMethodStorage()->GetSwapSpaceAllocator()); 150 alloc.destroy(m); 151 alloc.deallocate(m, 1); 152 } 153 154 CompiledMethod::~CompiledMethod() { 155 CompiledMethodStorage* storage = GetCompilerDriver()->GetCompiledMethodStorage(); 156 storage->ReleaseLinkerPatches(patches_); 157 storage->ReleaseCFIInfo(cfi_info_); 158 storage->ReleaseVMapTable(vmap_table_); 159 storage->ReleaseMethodInfo(method_info_); 160 } 161 162 } // namespace art 163
