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Start scaffolding a 65816 test generator.

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This commit is contained in:
Thomas Harte 2022-06-18 13:28:15 -04:00
parent ea0d2971eb
commit b62f484d93
2 changed files with 111 additions and 0 deletions
OSBindings/Mac
Clock Signal.xcodeproj
project.pbxproj
Clock SignalTests
65816ComparativeTests.mm

4
OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj

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4B90467222C6FA31000E2074 /* TestRunner68000.hpp */,
4B04C898285E3DC800AA8FD6 /* 65816ComparativeTests.mm */,
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4B90467322C6FADD000E2074 /* 68000BitwiseTests.mm */,
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4B01A6881F22F0DB001FD6E3 /* Z80MemptrTests.swift in Sources */,
4B778EFA23A5EB790000D260 /* DMK.cpp in Sources */,
4BEE1EC122B5E2FD000A26A6 /* Encoder.cpp in Sources */,

107
OSBindings/Mac/Clock SignalTests/65816ComparativeTests.mm Normal file

@ -0,0 +1,107 @@
//
// 65816ComparativeTests.m
// Clock SignalTests
//
// Created by Thomas Harte on 18/06/2022.
// Copyright © 2022 Thomas Harte. All rights reserved.
//
#include "65816.hpp"
#import <XCTest/XCTest.h>
#include <array>
#include <vector>
#include <unordered_map>
namespace {
struct BusHandler: public CPU::MOS6502Esque::BusHandler<uint32_t> {
// Use a map to store RAM contents, in order to preserve initialised state.
std::unordered_map<uint32_t, uint8_t> ram;
Cycles perform_bus_operation(CPU::MOS6502Esque::BusOperation operation, uint32_t address, uint8_t *value) {
// Record the basics of the operation.
auto &cycle = cycles.emplace_back();
cycle.address = address;
cycle.operation = operation;
cycle.value = 0xff;
// Perform the operation, and fill in the cycle's value.
using BusOperation = CPU::MOS6502Esque::BusOperation;
auto ram_value = ram.find(address);
switch(operation) {
case BusOperation::ReadOpcode:
++opcodes_fetched_;
case BusOperation::Read:
case BusOperation::ReadProgram:
case BusOperation::ReadVector:
if(ram_value != ram.end()) {
cycle.value = *value = ram_value->second;
} else {
cycle.value = *value = uint8_t(rand() >> 8);
ram[address] = cycle.value;
}
break;
case BusOperation::Write:
cycle.value = ram[address] = *value;
break;
default: break;
}
// Don't occupy any bonus time.
return Cycles(1);
}
int opcodes_fetched_ = 0;
struct Cycle {
CPU::MOS6502Esque::BusOperation operation;
uint32_t address;
uint8_t value;
};
std::vector<Cycle> cycles;
};
}
// MARK: - New test generator.
@interface TestGenerator : NSObject
@end
@implementation TestGenerator
- (void)generate {
BusHandler handler;
CPU::WDC65816::Processor<BusHandler, false> processor(handler);
for(int operation = 0; operation < 512; operation++) {
const bool is_emulated = operation & 256;
const uint8_t opcode = operation & 255;
// TODO: set up for opcode and emulation mode.
// TODO: run for a bit longer than this, of course.
processor.run_for(Cycles(1));
}
printf("");
}
@end
// MARK: - Existing test evaluator.
@interface WDC65816ComparativeTests : XCTestCase
@end
@implementation WDC65816ComparativeTests
// A generator for tests; not intended to be a permanent fixture.
- (void)testGenerate {
[[[TestGenerator alloc] init] generate];
}
@end