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Steps gingerly towards execution.

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This commit is contained in:
Thomas Harte 2021-01-16 20:51:02 -05:00
parent 722e0068ca
commit 10caa1a1fb
3 changed files with 79 additions and 0 deletions
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23
InstructionSets/M50740/Executor.cpp Normal file
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@ -0,0 +1,23 @@
//
// Executor.hpp
// Clock Signal
//
// Created by Thomas Harte on 16/1/21.
// Copyright © 2021 Thomas Harte. All rights reserved.
//
#include "Executor.hpp"
using namespace InstructionSet::M50740;
template <Operation operation> void Executor::perform(uint8_t *operand [[maybe_unused]]) {
}
template <Operation operation, AddressingMode addressing_mode> void Executor::perform(Executor *) {
}
Executor::Action Executor::action_for(Instruction) {
Action action;
action.perform = &perform<Operation::ADC, AddressingMode::Immediate>;
return action;
}

46
InstructionSets/M50740/Executor.hpp Normal file
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@ -0,0 +1,46 @@
//
// Executor.h
// Clock Signal
//
// Created by Thomas Harte on 1/16/21.
// Copyright © 2021 Thomas Harte. All rights reserved.
//
#ifndef Executor_h
#define Executor_h
#include "Instruction.hpp"
namespace InstructionSet {
namespace M50740 {
class Executor;
class Executor {
public:
/*!
M50740 actions require no further context; the addressing mode and operation is baked in,
so using the Executor to enquire of memory and the program counter is sufficient.
*/
struct Action {
void (* perform)(Executor *) = nullptr;
};
Action action_for(Instruction);
private:
/*!
Performs @c operation using @c operand as the value fetched from memory, if any.
*/
template <Operation operation> static void perform(uint8_t *operand);
/*!
Performs @c operation in @c addressing_mode.
*/
template <Operation operation, AddressingMode addressing_mode> static void perform(Executor *);
};
}
}
#endif /* Executor_h */

10
OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj
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@ -931,6 +931,9 @@
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