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315 lines
12 KiB
Plaintext
315 lines
12 KiB
Plaintext
//
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// m68kDecoderTests.m
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// Clock Signal
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//
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// Created by Thomas Harte on 18/04/2022.
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// Copyright 2022 Thomas Harte. All rights reserved.
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//
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#import <XCTest/XCTest.h>
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#include "../../../InstructionSets/M68k/Decoder.hpp"
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using namespace InstructionSet::M68k;
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@interface M68000DecoderTests : XCTestCase
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@end
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namespace {
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template <int index> NSString *operand(Preinstruction instruction, uint16_t opcode) {
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switch(instruction.mode<index>()) {
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default: return [NSString stringWithFormat:@"[Mode %d?]", int(instruction.mode<index>())];
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case AddressingMode::None:
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return @"";
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case AddressingMode::DataRegisterDirect:
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return [NSString stringWithFormat:@"D%d", instruction.reg<index>()];
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case AddressingMode::AddressRegisterDirect:
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return [NSString stringWithFormat:@"A%d", instruction.reg<index>()];
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case AddressingMode::AddressRegisterIndirect:
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return [NSString stringWithFormat:@"(A%d)", instruction.reg<index>()];
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case AddressingMode::AddressRegisterIndirectWithPostincrement:
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return [NSString stringWithFormat:@"(A%d)+", instruction.reg<index>()];
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case AddressingMode::AddressRegisterIndirectWithPredecrement:
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return [NSString stringWithFormat:@"-(A%d)", instruction.reg<index>()];
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case AddressingMode::AddressRegisterIndirectWithDisplacement:
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return [NSString stringWithFormat:@"(d16, A%d)", instruction.reg<index>()];
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case AddressingMode::AddressRegisterIndirectWithIndex8bitDisplacement:
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return [NSString stringWithFormat:@"(d8, A%d, Xn)", instruction.reg<index>()];
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case AddressingMode::ProgramCounterIndirectWithDisplacement:
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return @"(d16, PC)";
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case AddressingMode::ProgramCounterIndirectWithIndex8bitDisplacement:
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return @"(d8, PC, Xn)";
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case AddressingMode::AbsoluteShort:
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return @"(xxx).w";
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case AddressingMode::AbsoluteLong:
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return @"(xxx).l";
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case AddressingMode::ImmediateData:
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return @"#";
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case AddressingMode::Quick:
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return [NSString stringWithFormat:@"%d", quick(opcode, instruction.operation)];
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}
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}
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}
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@implementation M68000DecoderTests
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- (void)testInstructionSpecs {
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NSData *const testData =
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[NSData dataWithContentsOfURL:
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[[NSBundle bundleForClass:[self class]]
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URLForResource:@"68000ops"
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withExtension:@"json"
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subdirectory:@"68000 Decoding"]];
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NSDictionary<NSString *, NSString *> *const decodings = [NSJSONSerialization JSONObjectWithData:testData options:0 error:nil];
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XCTAssertNotNil(decodings);
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Predecoder<Model::M68000> decoder;
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for(int instr = 0; instr < 65536; instr++) {
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NSString *const instrName = [NSString stringWithFormat:@"%04x", instr];
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NSString *const expected = decodings[instrName];
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XCTAssertNotNil(expected);
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const auto found = decoder.decode(uint16_t(instr));
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NSString *instruction;
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switch(found.operation) {
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case Operation::Undefined: instruction = @"None"; break;
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case Operation::NOP: instruction = @"NOP"; break;
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case Operation::ABCD: instruction = @"ABCD"; break;
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case Operation::SBCD: instruction = @"SBCD"; break;
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case Operation::NBCD: instruction = @"NBCD"; break;
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case Operation::ADDb: instruction = @"ADD.b"; break;
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case Operation::ADDw: instruction = @"ADD.w"; break;
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case Operation::ADDl: instruction = @"ADD.l"; break;
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case Operation::ADDAw:
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if(found.mode<0>() == AddressingMode::Quick) {
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instruction = @"ADD.w";
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} else {
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instruction = @"ADDA.w";
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}
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break;
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case Operation::ADDAl:
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if(found.mode<0>() == AddressingMode::Quick) {
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instruction = @"ADD.l";
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} else {
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instruction = @"ADDA.l";
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}
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break;
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case Operation::ADDXb: instruction = @"ADDX.b"; break;
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case Operation::ADDXw: instruction = @"ADDX.w"; break;
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case Operation::ADDXl: instruction = @"ADDX.l"; break;
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case Operation::SUBb: instruction = @"SUB.b"; break;
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case Operation::SUBw: instruction = @"SUB.w"; break;
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case Operation::SUBl: instruction = @"SUB.l"; break;
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case Operation::SUBAw:
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if(found.mode<0>() == AddressingMode::Quick) {
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instruction = @"SUB.w";
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} else {
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instruction = @"SUBA.w";
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}
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break;
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case Operation::SUBAl:
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if(found.mode<0>() == AddressingMode::Quick) {
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instruction = @"SUB.l";
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} else {
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instruction = @"SUBA.l";
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}
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break;
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case Operation::SUBXb: instruction = @"SUBX.b"; break;
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case Operation::SUBXw: instruction = @"SUBX.w"; break;
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case Operation::SUBXl: instruction = @"SUBX.l"; break;
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case Operation::MOVEb: instruction = @"MOVE.b"; break;
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case Operation::MOVEw: instruction = @"MOVE.w"; break;
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case Operation::MOVEl:
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if(found.mode<0>() == AddressingMode::Quick) {
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instruction = @"MOVE.q";
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} else {
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instruction = @"MOVE.l";
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}
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break;
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case Operation::MOVEAw: instruction = @"MOVEA.w"; break;
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case Operation::MOVEAl: instruction = @"MOVEA.l"; break;
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case Operation::LEA: instruction = @"LEA"; break;
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case Operation::PEA: instruction = @"PEA"; break;
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case Operation::MOVEtoSR: instruction = @"MOVEtoSR"; break;
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case Operation::MOVEfromSR: instruction = @"MOVEfromSR"; break;
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case Operation::MOVEtoCCR: instruction = @"MOVEtoCCR"; break;
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case Operation::MOVEtoUSP: instruction = @"MOVEtoUSP"; break;
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case Operation::MOVEfromUSP: instruction = @"MOVEfromUSP"; break;
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case Operation::ORItoSR: instruction = @"ORItoSR"; break;
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case Operation::ORItoCCR: instruction = @"ORItoCCR"; break;
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case Operation::ANDItoSR: instruction = @"ANDItoSR"; break;
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case Operation::ANDItoCCR: instruction = @"ANDItoCCR"; break;
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case Operation::EORItoSR: instruction = @"EORItoSR"; break;
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case Operation::EORItoCCR: instruction = @"EORItoCCR"; break;
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case Operation::BTST: instruction = @"BTST"; break;
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case Operation::BCLR: instruction = @"BCLR"; break;
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case Operation::BCHG: instruction = @"BCHG"; break;
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case Operation::BSET: instruction = @"BSET"; break;
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case Operation::CMPb: instruction = @"CMP.b"; break;
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case Operation::CMPw: instruction = @"CMP.w"; break;
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case Operation::CMPl: instruction = @"CMP.l"; break;
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case Operation::CMPAw: instruction = @"CMPA.w"; break;
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case Operation::CMPAl: instruction = @"CMPA.l"; break;
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case Operation::TSTb: instruction = @"TST.b"; break;
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case Operation::TSTw: instruction = @"TST.w"; break;
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case Operation::TSTl: instruction = @"TST.l"; break;
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case Operation::JMP: instruction = @"JMP"; break;
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case Operation::JSR: instruction = @"JSR"; break;
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case Operation::RTS: instruction = @"RTS"; break;
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case Operation::DBcc: instruction = @"DBcc"; break;
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case Operation::Scc: instruction = @"Scc"; break;
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case Operation::Bccb:
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case Operation::Bccl:
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case Operation::Bccw: instruction = @"Bcc"; break;
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case Operation::BSRb:
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case Operation::BSRl:
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case Operation::BSRw: instruction = @"BSR"; break;
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case Operation::CLRb: instruction = @"CLR.b"; break;
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case Operation::CLRw: instruction = @"CLR.w"; break;
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case Operation::CLRl: instruction = @"CLR.l"; break;
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case Operation::NEGXb: instruction = @"NEGX.b"; break;
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case Operation::NEGXw: instruction = @"NEGX.w"; break;
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case Operation::NEGXl: instruction = @"NEGX.l"; break;
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case Operation::NEGb: instruction = @"NEG.b"; break;
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case Operation::NEGw: instruction = @"NEG.w"; break;
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case Operation::NEGl: instruction = @"NEG.l"; break;
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case Operation::ASLb: instruction = @"ASL.b"; break;
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case Operation::ASLw: instruction = @"ASL.w"; break;
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case Operation::ASLl: instruction = @"ASL.l"; break;
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case Operation::ASLm: instruction = @"ASL.w"; break;
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case Operation::ASRb: instruction = @"ASR.b"; break;
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case Operation::ASRw: instruction = @"ASR.w"; break;
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case Operation::ASRl: instruction = @"ASR.l"; break;
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case Operation::ASRm: instruction = @"ASR.w"; break;
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case Operation::LSLb: instruction = @"LSL.b"; break;
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case Operation::LSLw: instruction = @"LSL.w"; break;
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case Operation::LSLl: instruction = @"LSL.l"; break;
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case Operation::LSLm: instruction = @"LSL.w"; break;
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case Operation::LSRb: instruction = @"LSR.b"; break;
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case Operation::LSRw: instruction = @"LSR.w"; break;
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case Operation::LSRl: instruction = @"LSR.l"; break;
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case Operation::LSRm: instruction = @"LSR.w"; break;
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case Operation::ROLb: instruction = @"ROL.b"; break;
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case Operation::ROLw: instruction = @"ROL.w"; break;
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case Operation::ROLl: instruction = @"ROL.l"; break;
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case Operation::ROLm: instruction = @"ROL.w"; break;
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case Operation::RORb: instruction = @"ROR.b"; break;
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case Operation::RORw: instruction = @"ROR.w"; break;
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case Operation::RORl: instruction = @"ROR.l"; break;
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case Operation::RORm: instruction = @"ROR.w"; break;
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case Operation::ROXLb: instruction = @"ROXL.b"; break;
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case Operation::ROXLw: instruction = @"ROXL.w"; break;
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case Operation::ROXLl: instruction = @"ROXL.l"; break;
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case Operation::ROXLm: instruction = @"ROXL.w"; break;
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case Operation::ROXRb: instruction = @"ROXR.b"; break;
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case Operation::ROXRw: instruction = @"ROXR.w"; break;
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case Operation::ROXRl: instruction = @"ROXR.l"; break;
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case Operation::ROXRm: instruction = @"ROXR.w"; break;
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case Operation::MOVEMl: instruction = @"MOVEM.l"; break;
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case Operation::MOVEMw: instruction = @"MOVEM.w"; break;
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case Operation::MOVEPl: instruction = @"MOVEP.l"; break;
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case Operation::MOVEPw: instruction = @"MOVEP.w"; break;
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case Operation::ANDb: instruction = @"AND.b"; break;
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case Operation::ANDw: instruction = @"AND.w"; break;
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case Operation::ANDl: instruction = @"AND.l"; break;
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case Operation::EORb: instruction = @"EOR.b"; break;
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case Operation::EORw: instruction = @"EOR.w"; break;
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case Operation::EORl: instruction = @"EOR.l"; break;
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case Operation::NOTb: instruction = @"NOT.b"; break;
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case Operation::NOTw: instruction = @"NOT.w"; break;
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case Operation::NOTl: instruction = @"NOT.l"; break;
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case Operation::ORb: instruction = @"OR.b"; break;
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case Operation::ORw: instruction = @"OR.w"; break;
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case Operation::ORl: instruction = @"OR.l"; break;
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case Operation::MULU: instruction = @"MULU"; break;
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case Operation::MULS: instruction = @"MULS"; break;
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case Operation::DIVU: instruction = @"DIVU"; break;
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case Operation::DIVS: instruction = @"DIVS"; break;
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case Operation::RTE: instruction = @"RTE"; break;
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case Operation::RTR: instruction = @"RTR"; break;
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case Operation::TRAP: instruction = @"TRAP"; break;
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case Operation::TRAPV: instruction = @"TRAPV"; break;
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case Operation::CHK: instruction = @"CHK"; break;
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case Operation::EXG: instruction = @"EXG"; break;
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case Operation::SWAP: instruction = @"SWAP"; break;
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case Operation::TAS: instruction = @"TAS"; break;
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case Operation::EXTbtow: instruction = @"EXT.w"; break;
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case Operation::EXTwtol: instruction = @"EXT.l"; break;
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case Operation::LINKw: instruction = @"LINK"; break;
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case Operation::UNLINK: instruction = @"UNLINK"; break;
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case Operation::STOP: instruction = @"STOP"; break;
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case Operation::RESET: instruction = @"RESET"; break;
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// For now, skip any unmapped operations.
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default:
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XCTAssert(false, @"Operation %d unhandled by test case", int(found.operation));
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continue;
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}
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NSString *const operand1 = operand<0>(found, uint16_t(instr));
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NSString *const operand2 = operand<1>(found, uint16_t(instr));
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if(operand1.length) instruction = [instruction stringByAppendingFormat:@" %@", operand1];
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if(operand2.length) instruction = [instruction stringByAppendingFormat:@", %@", operand2];
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XCTAssertFalse(found.mode<0>() == AddressingMode::None && found.mode<1>() != AddressingMode::None, @"Decoding of %@ provided a second operand but not a first", instrName);
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XCTAssertEqualObjects(instruction, expected, "%@ should decode as %@; got %@", instrName, expected, instruction);
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}
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}
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@end
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