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// Copyright 2011 Google Inc. All Rights Reserved.
#include "compiled_method.h"
namespace art {
CompiledMethod::CompiledMethod(InstructionSet instruction_set,
const std::vector<uint16_t>& short_code,
const size_t frame_size_in_bytes,
const uint32_t core_spill_mask,
const uint32_t fp_spill_mask,
const std::vector<uint32_t>& mapping_table,
const std::vector<uint16_t>& vmap_table)
: instruction_set_(instruction_set), frame_size_in_bytes_(frame_size_in_bytes),
core_spill_mask_(core_spill_mask), fp_spill_mask_(fp_spill_mask) {
CHECK_NE(short_code.size(), 0U);
CHECK_GE(vmap_table.size(), 1U); // should always contain an entry for LR
CHECK_LE(vmap_table.size(), (1U << 16) - 1); // length must fit in 2^16-1
size_t code_byte_count = short_code.size() * sizeof(short_code[0]);
std::vector<uint8_t> byte_code(code_byte_count);
memcpy(&byte_code[0], &short_code[0], code_byte_count);
std::vector<uint32_t> length_prefixed_mapping_table;
length_prefixed_mapping_table.push_back(mapping_table.size());
length_prefixed_mapping_table.insert(length_prefixed_mapping_table.end(),
mapping_table.begin(),
mapping_table.end());
DCHECK_EQ(mapping_table.size() + 1, length_prefixed_mapping_table.size());
std::vector<uint16_t> length_prefixed_vmap_table;
length_prefixed_vmap_table.push_back(vmap_table.size());
length_prefixed_vmap_table.insert(length_prefixed_vmap_table.end(),
vmap_table.begin(),
vmap_table.end());
DCHECK_EQ(vmap_table.size() + 1, length_prefixed_vmap_table.size());
DCHECK_EQ(vmap_table.size(), length_prefixed_vmap_table[0]);
code_ = byte_code;
mapping_table_ = length_prefixed_mapping_table;
vmap_table_ = length_prefixed_vmap_table;
DCHECK_EQ(vmap_table_[0], static_cast<uint32_t>(__builtin_popcount(core_spill_mask) + __builtin_popcount(fp_spill_mask)));
}
void CompiledMethod::SetGcMap(const std::vector<uint8_t>& gc_map) {
CHECK_NE(gc_map.size(), 0U);
// Should only be used with CompiledMethods created with oatCompileMethod
CHECK_NE(mapping_table_.size(), 0U);
CHECK_NE(vmap_table_.size(), 0U);
gc_map_ = gc_map;
}
CompiledMethod::CompiledMethod(InstructionSet instruction_set,
const std::vector<uint8_t>& code,
const size_t frame_size_in_bytes,
const uint32_t core_spill_mask,
const uint32_t fp_spill_mask)
: instruction_set_(instruction_set), code_(code), frame_size_in_bytes_(frame_size_in_bytes),
core_spill_mask_(core_spill_mask), fp_spill_mask_(fp_spill_mask) {
CHECK_NE(code.size(), 0U);
}
CompiledMethod::~CompiledMethod() {}
InstructionSet CompiledMethod::GetInstructionSet() const {
return instruction_set_;
}
const std::vector<uint8_t>& CompiledMethod::GetCode() const {
return code_;
}
size_t CompiledMethod::GetFrameSizeInBytes() const {
return frame_size_in_bytes_;
}
uint32_t CompiledMethod::GetCoreSpillMask() const {
return core_spill_mask_;
}
uint32_t CompiledMethod::GetFpSpillMask() const {
return fp_spill_mask_;
}
const std::vector<uint32_t>& CompiledMethod::GetMappingTable() const {
return mapping_table_;
}
const std::vector<uint16_t>& CompiledMethod::GetVmapTable() const {
return vmap_table_;
}
const std::vector<uint8_t>& CompiledMethod::GetGcMap() const {
return gc_map_;
}
uint32_t CompiledMethod::AlignCode(uint32_t offset) const {
return AlignCode(offset, instruction_set_);
}
uint32_t CompiledMethod::AlignCode(uint32_t offset, InstructionSet instruction_set) {
switch (instruction_set) {
case kArm:
case kThumb2:
return RoundUp(offset, kArmAlignment);
case kX86:
return offset;
default:
LOG(FATAL) << "Unknown InstructionSet: " << static_cast<int>(instruction_set);
return 0;
}
}
size_t CompiledMethod::CodeDelta() const {
switch (instruction_set_) {
case kArm:
case kX86:
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: " << static_cast<int>(instruction_set_);
return 0;
}
}
const void* CompiledMethod::CodePointer(const void* code_pointer,
InstructionSet instruction_set) {
switch (instruction_set) {
case kArm:
case kX86:
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: " << static_cast<int>(instruction_set);
return NULL;
}
}
CompiledInvokeStub::CompiledInvokeStub(std::vector<uint8_t>& code) {
CHECK_NE(code.size(), 0U);
code_ = code;
}
CompiledInvokeStub::~CompiledInvokeStub() {}
const std::vector<uint8_t>& CompiledInvokeStub::GetCode() const {
return code_;
}
} // namespace art
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