mirror of
https://github.com/TomHarte/CLK.git
synced 2024-11-27 15:50:56 +00:00
90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
//
|
|
// Disassembler.hpp
|
|
// Clock Signal
|
|
//
|
|
// Created by Thomas Harte on 26/01/2021.
|
|
// Copyright © 2021 Thomas Harte. All rights reserved.
|
|
//
|
|
|
|
#ifndef Disassembler_hpp
|
|
#define Disassembler_hpp
|
|
|
|
#include "../Numeric/Sizes.hpp"
|
|
|
|
#include <list>
|
|
#include <map>
|
|
#include <set>
|
|
|
|
namespace InstructionSet {
|
|
|
|
template <
|
|
/// Indicates the Parser for this platform.
|
|
template<typename, bool> class ParserType,
|
|
/// Indicates the greatest value the program counter might take.
|
|
uint64_t max_address,
|
|
/// Provides the type of Instruction to expect.
|
|
typename InstructionType,
|
|
/// Provides the storage size used for memory.
|
|
typename MemoryWord,
|
|
/// Provides the addressing range of memory.
|
|
typename AddressType
|
|
> class Disassembler {
|
|
public:
|
|
using ProgramCounterType = typename MinIntTypeValue<max_address>::type;
|
|
|
|
/*!
|
|
Adds the result of disassembling @c memory which is @c length @c MemoryWords long from @c start_address
|
|
to the current net total of instructions and recorded memory accesses.
|
|
*/
|
|
void disassemble(const MemoryWord *memory, ProgramCounterType location, ProgramCounterType length, ProgramCounterType start_address) {
|
|
// TODO: possibly, move some of this stuff to instruction-set specific disassemblers, analogous to
|
|
// the Executor's ownership of the Parser. That would allow handling of stateful parsing.
|
|
ParserType<decltype(*this), true> parser;
|
|
pending_entry_points_.push_back(start_address);
|
|
entry_points_.insert(start_address);
|
|
|
|
while(!pending_entry_points_.empty()) {
|
|
const auto next_entry_point = pending_entry_points_.front();
|
|
pending_entry_points_.pop_front();
|
|
|
|
if(next_entry_point >= location) {
|
|
parser.parse(*this, memory - location, next_entry_point & max_address, length + location);
|
|
}
|
|
}
|
|
}
|
|
|
|
const std::map<ProgramCounterType, InstructionType> &instructions() const {
|
|
return instructions_;
|
|
}
|
|
|
|
const std::set<ProgramCounterType> &entry_points() const {
|
|
return entry_points_;
|
|
}
|
|
|
|
void announce_overflow(ProgramCounterType) {}
|
|
void announce_instruction(ProgramCounterType address, InstructionType instruction) {
|
|
instructions_[address] = instruction;
|
|
}
|
|
void add_entry(ProgramCounterType address) {
|
|
if(entry_points_.find(address) == entry_points_.end()) {
|
|
pending_entry_points_.push_back(address);
|
|
entry_points_.insert(address);
|
|
}
|
|
}
|
|
void add_access(AddressType address, AccessType access_type) {
|
|
// TODO.
|
|
(void)address;
|
|
(void)access_type;
|
|
}
|
|
|
|
private:
|
|
std::map<ProgramCounterType, InstructionType> instructions_;
|
|
std::set<ProgramCounterType> entry_points_;
|
|
|
|
std::list<ProgramCounterType> pending_entry_points_;
|
|
};
|
|
|
|
}
|
|
|
|
#endif /* Disassembler_h */
|