public void ShouldGenerateAbsoluteInstructionsWithLabel()
{
string input = @"procedure Test
{
php
mainLoop:
jmp mainLoop
}
";
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
driver.Parse();
RomHeader fakeHeader = new RomHeader();
fakeHeader.MapMode = MapMode.LoROM;
fakeHeader.RomSpeed = RomSpeed.SlowROM;
MemoryStream memoryStream = new MemoryStream(32);
CpuCodeGenerator generator = new CpuCodeGenerator(memoryStream);
generator.Instructions = driver.GlobalScope.Children[0].Statements.Where(x => x is CpuInstructionStatement).Select(x => x as CpuInstructionStatement).ToList();
generator.Scope = driver.GlobalScope.Children[0];
generator.Header = fakeHeader;
generator.Generate();
Assert.Equal(0x01, memoryStream.GetBuffer()[2]);
Assert.Equal(0x80, memoryStream.GetBuffer()[3]);
}
public void ShouldGenerateRelativeInstructionsWithLabel()
{
string input = @"procedure Test
{
php
backwardBranch:
sec
bvs backwardBranch
lda #$03
bra forwardBranch
tax
tay
forwardBranch:
rts
}
";
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
driver.Parse();
MemoryStream memoryStream = new MemoryStream(32);
CpuCodeGenerator generator = new CpuCodeGenerator(memoryStream);
generator.Instructions = driver.GlobalScope.Children[0].Statements.Where(x => x is CpuInstructionStatement).Select(x => x as CpuInstructionStatement).ToList();
generator.Scope = driver.GlobalScope.Children[0];
generator.Generate();
Assert.Equal(0xFD, memoryStream.GetBuffer()[3]);
Assert.Equal(0x02, memoryStream.GetBuffer()[7]);
}
public void RomSpeedShouldBeValid(string romSpeed)
{
const string inputTemplate = @"
header
{{
RomSpeed = {0}
}}
vectors
{{
}}
procedure Main
{{
sei
clc
xce
}}
";
string input = String.Format(inputTemplate, romSpeed);
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
Assert.Throws <CompilerErrorException>(() => driver.Parse());
}
public void ShoulResolveLabelsToAddress()
{
string input = @"procedure Test
{
php
pha
mainLoop:
lda $2007
jmp mainLoop
bra exit
exit:
rts
}
interrupt EmptyVector
{
}
";
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
driver.Parse();
Assert.Equal(0, driver.GlobalScope.AddressFor("Test"));
Assert.Equal(11, driver.GlobalScope.AddressFor("EmptyVector"));
var testScope = driver.GlobalScope.Children[0];
Assert.Equal(2, testScope.AddressFor("mainLoop"));
Assert.Equal(10, testScope.AddressFor("exit"));
}
public void ShouldParseHeaderInfo()
{
const string input = @"
header
{
CartridgeName = ""HELLO WORLD SNES""
RomSpeed = FastROM
MapMode = HiROM
SramSize = 32
Country = NorthAmerica
Developer = $1A
Version = %1010
}
";
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
driver.Parse();
Assert.Equal("HELLO WORLD SNES", driver.Header.CartridgeName);
Assert.Equal(RomSpeed.FastROM, driver.Header.RomSpeed);
Assert.Equal(MapMode.HiROM, driver.Header.MapMode);
Assert.Equal(32u, driver.Header.SramSize);
Assert.Equal(Country.NorthAmerica, driver.Header.Country);
Assert.Equal(0x1Au, driver.Header.Developer);
Assert.Equal(10u, driver.Header.Version);
}
public void CheckInvalidAddressingMode(string instruction)
{
const string inputTemplate = @"
vectors
{{
BRK = EmptyVector
NMI = EmptyVector
IRQ = EmptyVector
Reset = Main
}}
procedure Main
{{
{0}
}}
interrupt EmptyVector
{{
}}
";
string input = String.Format(inputTemplate, instruction);
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
Assert.Throws <CompilerErrorException>(() => driver.Parse());
}
public void ShouldFailOnInvalidInstructionLabel()
{
const string input = @"
vectors
{
BRK = EmptyVector
NMI = EmptyVector
IRQ = EmptyVector
Reset = Main
}
procedure Main
{
sei
clc
xce
mainLoop:
jmp infinite
}
interrupt EmptyVector
{
}
";
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
driver.Parse();
Assert.Throws <CompilerErrorException>(() => driver.SecondPass());
}
public void ShouldParseLabel()
{
const string input = @"procedure Test
{
php
pha
mainLoop:
lda $2007
jmp mainLoop
exit:
rts
}";
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
driver.Parse();
var thirdInstruction = driver.GlobalScope.Children[0].Statements[2];
var fiveInstruction = driver.GlobalScope.Children[0].Statements[4];
Assert.Equal("mainLoop", thirdInstruction.AssociatedLabel);
Assert.Equal("exit", fiveInstruction.AssociatedLabel);
}
public void VectorsIsRequired()
{
const string input = @"
header
{
CartridgeName = ""HELLO WORLD SNES""
RomSpeed = SlowROM
MapMode = LoROM
SramSize = 0
Country = Japan
Developer = 0
Version = 0
}
procedure Main
{
sei
clc
xce
}
"
;
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
driver.Parse();
Assert.Throws <CompilerErrorException>(() => driver.SecondPass());
Assert.Equal(1, driver.Errors.Count);
}
public void VersionExceptsANumberiteral(string invalidVersion)
{
const string inputTemplate = @"
header
{{
Version = {0}
}}
vectors
{{
}}
procedure Main
{{
sei
clc
xce
}}
";
string input = String.Format(inputTemplate, invalidVersion);
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
Assert.Throws <CompilerErrorException>(() => driver.Parse());
}
public void ShouldMarkRelativeLabelArgument(string instructionText)
{
string input = String.Format(ProcedureTemplate, instructionText);
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
driver.Parse();
var instruction = driver.GlobalScope.Children[0].Statements[0] as CpuInstructionStatement;
Assert.Equal(CpuAddressingMode.Relative, instruction.AddressingMode);
}
public void ShouldParseProcedure()
{
const string input = @"procedure Test
{
}";
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
driver.Parse();
Assert.Equal("Test", driver.GlobalScope.Children[0].Name);
Assert.Equal(ScopeType.Procedure, driver.GlobalScope.Children[0].Type);
}
public void ShouldParseInterrupt()
{
const string input = @"interrupt EmptyVector
{
}";
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
driver.Parse();
Assert.Equal("EmptyVector", driver.GlobalScope.Children[0].Name);
Assert.Equal(ScopeType.Interrupt, driver.GlobalScope.Children[0].Type);
}
public void ShouldParseImpliedInstructions(string opcodeText, CpuInstructions opcodeEnum)
{
string input = String.Format(ProcedureTemplate, opcodeText);
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
driver.Parse();
CpuInstructionStatement instructionStatement = driver.GlobalScope.Children[0].Statements[0] as CpuInstructionStatement;
Assert.Equal(opcodeEnum, instructionStatement.Opcode);
Assert.Equal(CpuAddressingMode.Implied, instructionStatement.AddressingMode);
}
public void ShouldParseArgumentSizeCorrectly(string instruction, int value, ArgumentSize size)
{
string input = String.Format(ProcedureTemplate, instruction);
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
driver.Parse();
CpuInstructionStatement instructionStatement = driver.GlobalScope.Children[0].Statements[0] as CpuInstructionStatement;
var argument = instructionStatement.Arguments[0] as NumberInstructionArgument;
Assert.Equal(value, argument.Number);
Assert.Equal(size, argument.Size);
}
public void ShouldParseLabelArgument()
{
string input = @"procedure Test
{
jmp mainLoop
}";
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
driver.Parse();
var instruction = driver.GlobalScope.Children[0].Statements[0] as CpuInstructionStatement;
var argument = instruction.Arguments[0] as LabelInstructionArgument;
Assert.Equal("mainLoop", argument.Label);
}
public void ShouldParseAbsoluteInstructions(string instruction, CpuInstructions opcodeEnum, int value)
{
string input = String.Format(ProcedureTemplate, instruction);
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
driver.Parse();
CpuInstructionStatement instructionStatement = driver.GlobalScope.Children[0].Statements[0] as CpuInstructionStatement;
Assert.Equal(opcodeEnum, instructionStatement.Opcode);
Assert.Equal(CpuAddressingMode.Absolute, instructionStatement.AddressingMode);
var numberArgument = instructionStatement.Arguments[0] as NumberInstructionArgument;
Assert.Equal(value, numberArgument.Number);
}
public void ShouldResolveLabelsOutsideScope()
{
const string input =
@"
vectors
{
BRK = EmptyVector
IRQ = EmptyVector
NMI = EmptyVector
Reset = Main
}
procedure Main
{
jsr Test
}
procedure Test
{
php
rep #$30
pha
lda #$03
pla
plp
rts
}
interrupt EmptyVector
{
}
";
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
driver.Parse();
driver.SecondPass();
var mainProcedure = driver.GlobalScope.Children[0];
Assert.Equal(true, mainProcedure.IsLabelValid("Test"));
Assert.Equal(3, mainProcedure.AddressFor("Test"));
}
public void ShouldFailOnInvalidVectorsEntryName()
{
const string input = @"
vectors
{
NormalNMI = Main
}
procedure Main
{
sei
clc
xce
}
"
;
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
Assert.Throws <CompilerErrorException>(() => driver.Parse());
}
public void VectorsShouldBeFullyPopulated()
{
const string input = @"
vectors
{
Reset = Main
}
procedure Main
{
sei
clc
xce
}
"
;
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
Assert.Throws <CompilerErrorException>(() => driver.Parse());
}
public void ShouldParseVectorsInfo()
{
const string input = @"
vectors
{
BRK = BrkVector
IRQ = IrqVector
NMI = NmiVector
Reset = Main
}
";
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
driver.Parse();
Assert.Equal("BrkVector", driver.Vectors.BRK);
Assert.Equal("IrqVector", driver.Vectors.IRQ);
Assert.Equal("NmiVector", driver.Vectors.NMI);
Assert.Equal("Main", driver.Vectors.Reset);
}
public void ShouldAddRTIWhenParsingInterrupt()
{
const string input = @"interrupt NMI
{
php
pha
pla
plp
}";
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
driver.Parse();
var cpuInstruction = driver.GlobalScope.Children[0].Statements[driver.GlobalScope.Children[0].Statements.Count - 1] as CpuInstructionStatement;
Assert.Equal("NMI", driver.GlobalScope.Children[0].Name);
Assert.Equal(ScopeType.Interrupt, driver.GlobalScope.Children[0].Type);
Assert.Equal(CpuInstructions.rti, cpuInstruction.Opcode);
Assert.Equal(CpuAddressingMode.Implied, cpuInstruction.AddressingMode);
}
public void InstructionsShouldHaveArguments()
{
const string input = @"
vectors
{
BRK = EmptyVector
NMI = EmptyVector
IRQ = EmptyVector
Reset = Main
}
procedure Main
{
lda
}
interrupt EmptyVector
{
}
";
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
Assert.Throws <CompilerErrorException>(() => driver.Parse());
}
public void ShouldFailOnInvalidHeaderEntryName()
{
const string input = @"
header
{
CartName = ""HELLO WORLD""
}
vectors
{
}
procedure Main
{
sei
clc
xce
}
";
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
Assert.Throws <CompilerErrorException>(() => driver.Parse());
}
public CpuPass(ZealCpuDriver driver)
{
_driver = driver;
}
public void ShouldFailOnBranchTooLong()
{
const string input = @"
vectors
{
BRK = EmptyVector
NMI = EmptyVector
IRQ = EmptyVector
Reset = Main
}
procedure Main
{
bra forwardLabel
backwardLabel:
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
sta $7E0000
forwardLabel:
bra backwardLabel
}
interrupt EmptyVector
{
}
";
ZealCpuDriver driver = new ZealCpuDriver(input.ToMemoryStream());
Assert.Throws <CompilerErrorException>(() => driver.Parse());
Assert.Equal(2, driver.Errors.Count);
}
static int Main(string[] args)
{
if (args.Length < 1)
{
Console.Error.WriteLine("No source file provided.");
return(1);
}
if (Path.GetExtension(args[0]) != ".zcpu")
{
Console.Error.WriteLine("The source file is in the wrong format. The source file must ends with .zcpu.");
return(1);
}
ZealCpuDriver driver = new ZealCpuDriver(args[0]);
try
{
driver.Parse();
driver.SecondPass();
}
catch (CompilerErrorException)
{
foreach (var error in driver.Errors)
{
printErrorMessage(error);
}
#if DEBUG
Console.Read();
#endif
return(1);
}
FileStream outputRom = new FileStream(Path.ChangeExtension(args[0], ".sfc"), FileMode.Create);
CpuCodeGenerator codeGenerator = new CpuCodeGenerator(outputRom);
codeGenerator.Header = driver.Header;
foreach (var scope in driver.GlobalScope.Children)
{
codeGenerator.Scope = scope;
List <CpuInstructionStatement> instructions = new List <CpuInstructionStatement>();
foreach (var statement in scope.Statements)
{
if (statement is CpuInstructionStatement)
{
instructions.Add((CpuInstructionStatement)statement);
}
}
codeGenerator.Instructions = instructions;
codeGenerator.Generate();
}
SfcRomWriter romWriter = new SfcRomWriter(outputRom);
romWriter.Driver = driver;
romWriter.Write();
outputRom.Close();
using (FileStream newRom = new FileStream(Path.ChangeExtension(args[0], ".sfc"), FileMode.Open))
{
SfcRomWriter checksumWriter = new SfcRomWriter(newRom);
checksumWriter.Driver = driver;
checksumWriter.ComputeChecksum();
}
return(0);
}
public SecondCpuPass(ZealCpuDriver driver)
: base(driver)
{
}
public ParseCpuPass(ZealCpuDriver driver)
: base(driver)
{
}
