compiler/compiled_method.cc

   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
  20 namespace art {
  21
  22 CompiledCode::CompiledCode(CompilerDriver* compiler_driver, InstructionSet instruction_set,
  23                            const std::vector<uint8_t>& quick_code)
  24     : compiler_driver_(compiler_driver), instruction_set_(instruction_set),
  25       portable_code_(nullptr), quick_code_(nullptr) {
  26   SetCode(&quick_code, nullptr);
  27 }
  28
  29 CompiledCode::CompiledCode(CompilerDriver* compiler_driver, InstructionSet instruction_set,
  30                            const std::string& elf_object, const std::string& symbol)
  31     : compiler_driver_(compiler_driver), instruction_set_(instruction_set),
  32       portable_code_(nullptr), quick_code_(nullptr), symbol_(symbol) {
  33   CHECK_NE(elf_object.size(), 0U);
  34   CHECK_NE(symbol.size(), 0U);
  35   std::vector<uint8_t> temp_code(elf_object.size());
  36   for (size_t i = 0; i < elf_object.size(); ++i) {
  37     temp_code[i] = elf_object[i];
  38   }
  39   // TODO: we shouldn't just shove ELF objects in as "code" but
  40   // change to have different kinds of compiled methods.  This is
  41   // being deferred until we work on hybrid execution or at least
  42   // until we work on batch compilation.
  43   SetCode(nullptr, &temp_code);
  44 }
  45
  46 void CompiledCode::SetCode(const std::vector<uint8_t>* quick_code,
  47                            const std::vector<uint8_t>* portable_code) {
  48   if (portable_code != nullptr) {
  49     CHECK(!portable_code->empty());
  50     portable_code_ = compiler_driver_->DeduplicateCode(*portable_code);
  51   }
  52   if (quick_code != nullptr) {
  53     CHECK(!quick_code->empty());
  54     quick_code_ = compiler_driver_->DeduplicateCode(*quick_code);
  55   }
  56 }
  57
  58 bool CompiledCode::operator==(const CompiledCode& rhs) const {
  59   if (quick_code_ != nullptr) {
  60     if (rhs.quick_code_ == nullptr) {
  61       return false;
  62     } else if (quick_code_->size() != rhs.quick_code_->size()) {
  63       return false;
  64     } else {
  65       return std::equal(quick_code_->begin(), quick_code_->end(), rhs.quick_code_->begin());
  66     }
  67   } else if (portable_code_ != nullptr) {
  68     if (rhs.portable_code_ == nullptr) {
  69       return false;
  70     } else if (portable_code_->size() != rhs.portable_code_->size()) {
  71       return false;
  72     } else {
  73       return std::equal(portable_code_->begin(), portable_code_->end(),
  74                         rhs.portable_code_->begin());
  75     }
  76   }
  77   return (rhs.quick_code_ == nullptr) && (rhs.portable_code_ == nullptr);
  78 }
  79
  80 uint32_t CompiledCode::AlignCode(uint32_t offset) const {
  81   return AlignCode(offset, instruction_set_);
  82 }
  83
  84 uint32_t CompiledCode::AlignCode(uint32_t offset, InstructionSet instruction_set) {
  85   return RoundUp(offset, GetInstructionSetAlignment(instruction_set));
  86 }
  87
  88 size_t CompiledCode::CodeDelta() const {
  89   return CodeDelta(instruction_set_);
  90 }
  91
  92 size_t CompiledCode::CodeDelta(InstructionSet instruction_set) {
  93   switch (instruction_set) {
  94     case kArm:
  95     case kArm64:
  96     case kMips:
  97     case kX86:
  98     case kX86_64:
  99       return 0;
 100     case kThumb2: {
 101       // +1 to set the low-order bit so a BLX will switch to Thumb mode
 102       return 1;
 103     }
 104     default:
 105       LOG(FATAL) << "Unknown InstructionSet: " << instruction_set;
 106       return 0;
 107   }
 108 }
 109
 110 const void* CompiledCode::CodePointer(const void* code_pointer,
 111                                       InstructionSet instruction_set) {
 112   switch (instruction_set) {
 113     case kArm:
 114     case kArm64:
 115     case kMips:
 116     case kX86:
 117     case kX86_64:
 118       return code_pointer;
 119     case kThumb2: {
 120       uintptr_t address = reinterpret_cast<uintptr_t>(code_pointer);
 121       // Set the low-order bit so a BLX will switch to Thumb mode
 122       address |= 0x1;
 123       return reinterpret_cast<const void*>(address);
 124     }
 125     default:
 126       LOG(FATAL) << "Unknown InstructionSet: " << instruction_set;
 127       return NULL;
 128   }
 129 }
 130
 131 const std::string& CompiledCode::GetSymbol() const {
 132   CHECK_NE(0U, symbol_.size());
 133   return symbol_;
 134 }
 135
 136 const std::vector<uint32_t>& CompiledCode::GetOatdataOffsetsToCompliledCodeOffset() const {
 137   CHECK_NE(0U, oatdata_offsets_to_compiled_code_offset_.size()) << symbol_;
 138   return oatdata_offsets_to_compiled_code_offset_;
 139 }
 140
 141 void CompiledCode::AddOatdataOffsetToCompliledCodeOffset(uint32_t offset) {
 142   oatdata_offsets_to_compiled_code_offset_.push_back(offset);
 143 }
 144
 145 CompiledMethod::CompiledMethod(CompilerDriver* driver,
 146                                InstructionSet instruction_set,
 147                                const std::vector<uint8_t>& quick_code,
 148                                const size_t frame_size_in_bytes,
 149                                const uint32_t core_spill_mask,
 150                                const uint32_t fp_spill_mask,
 151                                const std::vector<uint8_t>& mapping_table,
 152                                const std::vector<uint8_t>& vmap_table,
 153                                const std::vector<uint8_t>& native_gc_map,
 154                                const std::vector<uint8_t>* cfi_info)
 155     : CompiledCode(driver, instruction_set, quick_code), frame_size_in_bytes_(frame_size_in_bytes),
 156       core_spill_mask_(core_spill_mask), fp_spill_mask_(fp_spill_mask),
 157   mapping_table_(driver->DeduplicateMappingTable(mapping_table)),
 158   vmap_table_(driver->DeduplicateVMapTable(vmap_table)),
 159   gc_map_(driver->DeduplicateGCMap(native_gc_map)),
 160   cfi_info_(driver->DeduplicateCFIInfo(cfi_info)) {
 161 }
 162
 163 CompiledMethod::CompiledMethod(CompilerDriver* driver,
 164                                InstructionSet instruction_set,
 165                                const std::vector<uint8_t>& code,
 166                                const size_t frame_size_in_bytes,
 167                                const uint32_t core_spill_mask,
 168                                const uint32_t fp_spill_mask)
 169     : CompiledCode(driver, instruction_set, code),
 170       frame_size_in_bytes_(frame_size_in_bytes),
 171       core_spill_mask_(core_spill_mask), fp_spill_mask_(fp_spill_mask),
 172       mapping_table_(driver->DeduplicateMappingTable(std::vector<uint8_t>())),
 173       vmap_table_(driver->DeduplicateVMapTable(std::vector<uint8_t>())),
 174       gc_map_(driver->DeduplicateGCMap(std::vector<uint8_t>())),
 175       cfi_info_(nullptr) {
 176 }
 177
 178 // Constructs a CompiledMethod for the Portable compiler.
 179 CompiledMethod::CompiledMethod(CompilerDriver* driver, InstructionSet instruction_set,
 180                                const std::string& code, const std::vector<uint8_t>& gc_map,
 181                                const std::string& symbol)
 182     : CompiledCode(driver, instruction_set, code, symbol),
 183       frame_size_in_bytes_(kStackAlignment), core_spill_mask_(0),
 184       fp_spill_mask_(0), gc_map_(driver->DeduplicateGCMap(gc_map)) {
 185   mapping_table_ = driver->DeduplicateMappingTable(std::vector<uint8_t>());
 186   vmap_table_ = driver->DeduplicateVMapTable(std::vector<uint8_t>());
 187 }
 188
 189 CompiledMethod::CompiledMethod(CompilerDriver* driver, InstructionSet instruction_set,
 190                                const std::string& code, const std::string& symbol)
 191     : CompiledCode(driver, instruction_set, code, symbol),
 192       frame_size_in_bytes_(kStackAlignment), core_spill_mask_(0),
 193       fp_spill_mask_(0) {
 194   mapping_table_ = driver->DeduplicateMappingTable(std::vector<uint8_t>());
 195   vmap_table_ = driver->DeduplicateVMapTable(std::vector<uint8_t>());
 196   gc_map_ = driver->DeduplicateGCMap(std::vector<uint8_t>());
 197 }
 198
 199 }  // namespace art