/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "compiled_method.h"
#include "driver/compiler_driver.h"
namespace art {
CompiledCode::CompiledCode(CompilerDriver* compiler_driver, InstructionSet instruction_set,
const ArrayRef<const uint8_t>& quick_code)
: compiler_driver_(compiler_driver), instruction_set_(instruction_set),
portable_code_(nullptr), quick_code_(nullptr) {
SetCode(&quick_code, nullptr);
}
CompiledCode::CompiledCode(CompilerDriver* compiler_driver, InstructionSet instruction_set,
const std::string& elf_object, const std::string& symbol)
: compiler_driver_(compiler_driver), instruction_set_(instruction_set),
portable_code_(compiler_driver_->DeduplicateCode(
ArrayRef<const uint8_t>(reinterpret_cast<const uint8_t*>(elf_object.data()),
elf_object.size()))),
quick_code_(nullptr), symbol_(symbol) {
CHECK_NE(elf_object.size(), 0U);
CHECK_NE(symbol.size(), 0U);
// TODO: we shouldn't just shove ELF objects in as "code" but
// change to have different kinds of compiled methods. This is
// being deferred until we work on hybrid execution or at least
// until we work on batch compilation.
}
void CompiledCode::SetCode(const ArrayRef<const uint8_t>* quick_code,
const ArrayRef<const uint8_t>* portable_code) {
if (portable_code != nullptr) {
CHECK(!portable_code->empty());
portable_code_ = compiler_driver_->DeduplicateCode(*portable_code);
}
if (quick_code != nullptr) {
CHECK(!quick_code->empty());
quick_code_ = compiler_driver_->DeduplicateCode(*quick_code);
}
}
bool CompiledCode::operator==(const CompiledCode& rhs) const {
if (quick_code_ != nullptr) {
if (rhs.quick_code_ == nullptr) {
return false;
} else if (quick_code_->size() != rhs.quick_code_->size()) {
return false;
} else {
return std::equal(quick_code_->begin(), quick_code_->end(), rhs.quick_code_->begin());
}
} else if (portable_code_ != nullptr) {
if (rhs.portable_code_ == nullptr) {
return false;
} else if (portable_code_->size() != rhs.portable_code_->size()) {
return false;
} else {
return std::equal(portable_code_->begin(), portable_code_->end(),
rhs.portable_code_->begin());
}
}
return (rhs.quick_code_ == nullptr) && (rhs.portable_code_ == nullptr);
}
uint32_t CompiledCode::AlignCode(uint32_t offset) const {
return AlignCode(offset, instruction_set_);
}
uint32_t CompiledCode::AlignCode(uint32_t offset, InstructionSet instruction_set) {
return RoundUp(offset, GetInstructionSetAlignment(instruction_set));
}
size_t CompiledCode::CodeDelta() const {
return CodeDelta(instruction_set_);
}
size_t CompiledCode::CodeDelta(InstructionSet instruction_set) {
switch (instruction_set) {
case kArm:
case kArm64:
case kMips:
case kX86:
case kX86_64:
return 0;
case kThumb2: {
// +1 to set the low-order bit so a BLX will switch to Thumb mode
return 1;
}
default:
LOG(FATAL) << "Unknown InstructionSet: " << instruction_set;
return 0;
}
}
const void* CompiledCode::CodePointer(const void* code_pointer,
InstructionSet instruction_set) {
switch (instruction_set) {
case kArm:
case kArm64:
case kMips:
case kX86:
case kX86_64:
return code_pointer;
case kThumb2: {
uintptr_t address = reinterpret_cast<uintptr_t>(code_pointer);
// Set the low-order bit so a BLX will switch to Thumb mode
address |= 0x1;
return reinterpret_cast<const void*>(address);
}
default:
LOG(FATAL) << "Unknown InstructionSet: " << instruction_set;
return NULL;
}
}
const std::string& CompiledCode::GetSymbol() const {
CHECK_NE(0U, symbol_.size());
return symbol_;
}
const std::vector<uint32_t>& CompiledCode::GetOatdataOffsetsToCompliledCodeOffset() const {
CHECK_NE(0U, oatdata_offsets_to_compiled_code_offset_.size()) << symbol_;
return oatdata_offsets_to_compiled_code_offset_;
}
void CompiledCode::AddOatdataOffsetToCompliledCodeOffset(uint32_t offset) {
oatdata_offsets_to_compiled_code_offset_.push_back(offset);
}
CompiledMethod::CompiledMethod(CompilerDriver* driver,
InstructionSet instruction_set,
const ArrayRef<const uint8_t>& quick_code,
const size_t frame_size_in_bytes,
const uint32_t core_spill_mask,
const uint32_t fp_spill_mask,
const ArrayRef<const uint8_t>& mapping_table,
const ArrayRef<const uint8_t>& vmap_table,
const ArrayRef<const uint8_t>& native_gc_map,
const ArrayRef<const uint8_t>& cfi_info)
: CompiledCode(driver, instruction_set, quick_code), frame_size_in_bytes_(frame_size_in_bytes),
core_spill_mask_(core_spill_mask), fp_spill_mask_(fp_spill_mask),
mapping_table_(driver->DeduplicateMappingTable(mapping_table)),
vmap_table_(driver->DeduplicateVMapTable(vmap_table)),
gc_map_(driver->DeduplicateGCMap(native_gc_map)),
cfi_info_(cfi_info.data() == nullptr ? nullptr : driver->DeduplicateCFIInfo(cfi_info)) {
}
CompiledMethod::CompiledMethod(CompilerDriver* driver,
InstructionSet instruction_set,
const ArrayRef<const uint8_t>& code,
const size_t frame_size_in_bytes,
const uint32_t core_spill_mask,
const uint32_t fp_spill_mask)
: CompiledCode(driver, instruction_set, code),
frame_size_in_bytes_(frame_size_in_bytes),
core_spill_mask_(core_spill_mask), fp_spill_mask_(fp_spill_mask),
cfi_info_(nullptr) {
mapping_table_ = driver->DeduplicateMappingTable(ArrayRef<const uint8_t>());
vmap_table_ = driver->DeduplicateVMapTable(ArrayRef<const uint8_t>());
gc_map_ = driver->DeduplicateGCMap(ArrayRef<const uint8_t>());
}
// Constructs a CompiledMethod for the Portable compiler.
CompiledMethod::CompiledMethod(CompilerDriver* driver, InstructionSet instruction_set,
const std::string& code, const ArrayRef<const uint8_t>& gc_map,
const std::string& symbol)
: CompiledCode(driver, instruction_set, code, symbol),
frame_size_in_bytes_(kStackAlignment), core_spill_mask_(0),
fp_spill_mask_(0), gc_map_(driver->DeduplicateGCMap(gc_map)),
cfi_info_(nullptr) {
mapping_table_ = driver->DeduplicateMappingTable(ArrayRef<const uint8_t>());
vmap_table_ = driver->DeduplicateVMapTable(ArrayRef<const uint8_t>());
}
CompiledMethod::CompiledMethod(CompilerDriver* driver, InstructionSet instruction_set,
const std::string& code, const std::string& symbol)
: CompiledCode(driver, instruction_set, code, symbol),
frame_size_in_bytes_(kStackAlignment), core_spill_mask_(0),
fp_spill_mask_(0), cfi_info_(nullptr) {
mapping_table_ = driver->DeduplicateMappingTable(ArrayRef<const uint8_t>());
vmap_table_ = driver->DeduplicateVMapTable(ArrayRef<const uint8_t>());
gc_map_ = driver->DeduplicateGCMap(ArrayRef<const uint8_t>());
}
CompiledMethod* CompiledMethod::SwapAllocCompiledMethod(CompilerDriver* driver,
InstructionSet instruction_set,
const ArrayRef<const uint8_t>& quick_code,
const size_t frame_size_in_bytes,
const uint32_t core_spill_mask,
const uint32_t fp_spill_mask,
const ArrayRef<const uint8_t>& mapping_table,
const ArrayRef<const uint8_t>& vmap_table,
const ArrayRef<const uint8_t>& native_gc_map,
const ArrayRef<const uint8_t>& cfi_info) {
SwapAllocator<CompiledMethod> alloc(driver->GetSwapSpaceAllocator());
CompiledMethod* ret = alloc.allocate(1);
alloc.construct(ret, driver, instruction_set, quick_code, frame_size_in_bytes, core_spill_mask,
fp_spill_mask, mapping_table, vmap_table, native_gc_map, cfi_info);
return ret;
}
CompiledMethod* CompiledMethod::SwapAllocCompiledMethod(CompilerDriver* driver,
InstructionSet instruction_set,
const ArrayRef<const uint8_t>& quick_code,
const size_t frame_size_in_bytes,
const uint32_t core_spill_mask,
const uint32_t fp_spill_mask) {
SwapAllocator<CompiledMethod> alloc(driver->GetSwapSpaceAllocator());
CompiledMethod* ret = alloc.allocate(1);
alloc.construct(ret, driver, instruction_set, quick_code, frame_size_in_bytes, core_spill_mask,
fp_spill_mask);
return ret;
}
void CompiledMethod::ReleaseSwapAllocatedCompiledMethod(CompilerDriver* driver, CompiledMethod* m) {
SwapAllocator<CompiledMethod> alloc(driver->GetSwapSpaceAllocator());
alloc.destroy(m);
alloc.deallocate(m, 1);
}
} // namespace art