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debugging

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nub31
2025-07-03 21:40:08 +02:00
parent 429ce2a8b8
commit d17d98cbf2
3 changed files with 148 additions and 12 deletions
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2
src/compiler/CLI/Program.cs
View File

@@ -120,7 +120,7 @@ foreach (var file in options.Files)
{
var outFileName = $"{HexString.CreateUnique(8)}_{Path.GetFileNameWithoutExtension(file)}";
var ssa = QBEGenerator.Emit(boundSyntaxTrees[file], boundDefinitionTable);
var ssa = QBEGenerator.Emit(boundSyntaxTrees[file], boundDefinitionTable, file);
File.WriteAllText(Path.Join(INT_DEBUG_DIR, $"{outFileName}.ssa"), ssa);
var asm = await QBE.Invoke(ssa);

85
src/compiler/Generation/QBE/QBEDebugEmitter.cs Normal file
View File

@@ -0,0 +1,85 @@
using System.Text;
using Syntax;
using Syntax.Tokenization;
using Syntax.Typing.BoundNode;
namespace Generation.QBE;
public class QBEDebugEmitter
{
private readonly StringBuilder _builder;
private int _currentLine = -1;
private readonly Dictionary<string, int> _fileMap = new();
private int _nextFileId = 0;
public QBEDebugEmitter(StringBuilder builder)
{
_builder = builder;
}
public int RegisterFile(string fileName)
{
if (_fileMap.TryGetValue(fileName, out var existingId))
{
return existingId;
}
var fileId = _nextFileId++;
_fileMap[fileName] = fileId;
_builder.AppendLine($"# Debug file {fileId}: {fileName}");
return fileId;
}
public void EmitDebugLocation(SourceSpan span)
{
if (span.IsEmpty)
return;
var line = span.Start.Line;
if (_currentLine != line)
{
_builder.AppendLine($" dbgloc {line}");
_currentLine = line;
}
}
public void EmitDebugLocation(Token token)
{
EmitDebugLocation(token.Span);
}
public void EmitDebugLocation(BoundNode node)
{
var firstToken = node.Tokens.FirstOrDefault();
if (firstToken != null)
{
EmitDebugLocation(firstToken);
}
}
public void EmitDebugLocation(IEnumerable<Token> tokens)
{
var firstToken = tokens.FirstOrDefault();
if (firstToken != null)
{
EmitDebugLocation(firstToken);
}
}
public void ForceEmitDebugLocation(SourceSpan span)
{
if (!span.IsEmpty)
{
_builder.AppendLine($" dbgloc {span.Start.Line}");
_currentLine = span.Start.Line;
}
}
public void ResetLineTracker()
{
_currentLine = -1;
}
}

71
src/compiler/Generation/QBE/QBEGenerator.cs
View File

@@ -15,6 +15,8 @@ public static class QBEGenerator
private static BoundSyntaxTree _syntaxTree = null!;
private static BoundDefinitionTable _definitionTable = null!;
private static QBEDebugEmitter _debugEmitter = null!;
private static StringBuilder _builder = new();
private static List<CStringLiteral> _cStringLiterals = [];
private static List<StringLiteral> _stringLiterals = [];
@@ -30,12 +32,14 @@ public static class QBEGenerator
private static int _stringLiteralIndex;
private static bool _codeIsReachable = true;
public static string Emit(BoundSyntaxTree syntaxTree, BoundDefinitionTable definitionTable)
public static string Emit(BoundSyntaxTree syntaxTree, BoundDefinitionTable definitionTable, string file)
{
_syntaxTree = syntaxTree;
_definitionTable = definitionTable;
_builder = new StringBuilder();
_debugEmitter = new QBEDebugEmitter(_builder);
_cStringLiterals = [];
_stringLiterals = [];
_breakLabels = [];
@@ -50,6 +54,9 @@ public static class QBEGenerator
_stringLiteralIndex = 0;
_codeIsReachable = true;
_builder.AppendLine($"dbgfile \"{file}\"");
_builder.AppendLine();
foreach (var structDef in _definitionTable.GetStructs())
{
EmitStructDefinition(structDef);
@@ -58,13 +65,13 @@ public static class QBEGenerator
foreach (var funcDef in _syntaxTree.Definitions.OfType<BoundLocalFuncDefinitionNode>())
{
EmitFuncDefinition(FuncName(funcDef), funcDef.Parameters, funcDef.ReturnType, funcDef.Body, funcDef.Exported);
EmitFuncDefinition(funcDef, FuncName(funcDef), funcDef.Parameters, funcDef.ReturnType, funcDef.Body, funcDef.Exported);
_builder.AppendLine();
}
while (_anonymousFunctions.TryDequeue(out var anon))
{
EmitFuncDefinition(anon.Name, anon.Func.Parameters, anon.Func.ReturnType, anon.Func.Body, false);
EmitFuncDefinition(anon.Func, anon.Name, anon.Func.Parameters, anon.Func.ReturnType, anon.Func.Body, false);
_builder.AppendLine();
}
@@ -456,8 +463,10 @@ public static class QBEGenerator
throw new UnreachableException($"Member '{member}' not found in struct");
}
private static void EmitFuncDefinition(string name, List<BoundFuncParameter> parameters, NubType returnType, BoundBlockNode body, bool exported)
private static void EmitFuncDefinition(BoundNode debugNode, string name, List<BoundFuncParameter> parameters, NubType returnType, BoundBlockNode body, bool exported)
{
_debugEmitter.ResetLineTracker();
_variables.Clear();
_variableScopes.Clear();
@@ -519,6 +528,8 @@ public static class QBEGenerator
_builder.AppendLine($"({string.Join(", ", parameterStrings)}) {{");
_builder.AppendLine("@start");
_debugEmitter.EmitDebugLocation(debugNode);
List<Variable> parameterVars = [];
foreach (var parameter in parameters)
@@ -598,11 +609,11 @@ public static class QBEGenerator
case BoundAssignmentNode assignment:
EmitAssignment(assignment);
break;
case BoundBreakNode:
EmitBreak();
case BoundBreakNode @break:
EmitBreak(@break);
break;
case BoundContinueNode:
EmitContinue();
case BoundContinueNode @continue:
EmitContinue(@continue);
break;
case BoundIfNode ifStatement:
EmitIf(ifStatement);
@@ -626,6 +637,8 @@ public static class QBEGenerator
private static void EmitAssignment(BoundAssignmentNode assignment)
{
_debugEmitter.EmitDebugLocation(assignment);
var destination = EmitExpression(assignment.Expression);
Debug.Assert(destination.Kind == ValKind.Pointer);
EmitCopyIntoOrInitialize(assignment.Value, destination.Name);
@@ -633,6 +646,8 @@ public static class QBEGenerator
private static void EmitBlock(BoundBlockNode block, List<Variable>? variables = null)
{
_debugEmitter.EmitDebugLocation(block);
_variableScopes.Push(_variables.Count);
if (variables != null)
{
@@ -656,20 +671,26 @@ public static class QBEGenerator
_codeIsReachable = true;
}
private static void EmitBreak()
private static void EmitBreak(BoundBreakNode @break)
{
_debugEmitter.EmitDebugLocation(@break);
_builder.AppendLine($" jmp {_breakLabels.Peek()}");
_codeIsReachable = false;
}
private static void EmitContinue()
private static void EmitContinue(BoundContinueNode @continue)
{
_debugEmitter.EmitDebugLocation(@continue);
_builder.AppendLine($" jmp {_continueLabels.Peek()}");
_codeIsReachable = false;
}
private static void EmitIf(BoundIfNode ifStatement)
{
_debugEmitter.EmitDebugLocation(ifStatement);
var trueLabel = LabelName();
var falseLabel = LabelName();
var endLabel = LabelName();
@@ -694,6 +715,8 @@ public static class QBEGenerator
private static void EmitReturn(BoundReturnNode @return)
{
_debugEmitter.EmitDebugLocation(@return);
if (@return.Value.HasValue)
{
var result = EmitUnwrap(EmitExpression(@return.Value.Value));
@@ -707,6 +730,8 @@ public static class QBEGenerator
private static void EmitVariableDeclaration(BoundVariableDeclarationNode variableDeclaration)
{
_debugEmitter.EmitDebugLocation(variableDeclaration);
var variable = VarName();
_builder.AppendLine($" {variable} =l alloc8 {SizeOf(variableDeclaration.Type)}");
@@ -720,6 +745,8 @@ public static class QBEGenerator
private static void EmitWhile(BoundWhileNode whileStatement)
{
_debugEmitter.EmitDebugLocation(whileStatement);
var conditionLabel = LabelName();
var iterationLabel = LabelName();
var endLabel = LabelName();
@@ -761,6 +788,8 @@ public static class QBEGenerator
private static Val EmitAnonymousFunc(BoundAnonymousFuncNode anonymousFunc)
{
_debugEmitter.EmitDebugLocation(anonymousFunc);
var name = $"$anon_func{++_anonymousFuncIndex}";
_anonymousFunctions.Enqueue((anonymousFunc, name));
return new Val(name, anonymousFunc.Type, ValKind.Direct);
@@ -768,6 +797,8 @@ public static class QBEGenerator
private static Val EmitArrayIndexAccess(BoundArrayIndexAccessNode arrayIndexAccess)
{
_debugEmitter.EmitDebugLocation(arrayIndexAccess);
var array = EmitUnwrap(EmitExpression(arrayIndexAccess.Array));
var index = EmitUnwrap(EmitExpression(arrayIndexAccess.Index));
@@ -806,6 +837,8 @@ public static class QBEGenerator
private static Val EmitArrayInitializer(BoundArrayInitializerNode arrayInitializer)
{
_debugEmitter.EmitDebugLocation(arrayInitializer);
var capacity = EmitUnwrap(EmitExpression(arrayInitializer.Capacity));
var elementSize = SizeOf(arrayInitializer.ElementType);
@@ -827,6 +860,8 @@ public static class QBEGenerator
private static Val EmitDereference(BoundDereferenceNode dereference)
{
_debugEmitter.EmitDebugLocation(dereference);
var pointerType = (NubPointerType)dereference.Expression.Type;
var pointer = EmitExpression(dereference.Expression);
@@ -842,6 +877,8 @@ public static class QBEGenerator
private static Val EmitAddressOf(BoundAddressOfNode addressOf)
{
_debugEmitter.EmitDebugLocation(addressOf);
var value = EmitExpression(addressOf.Expression);
Debug.Assert(value.Kind == ValKind.Pointer);
return new Val(value.Name, addressOf.Type, ValKind.Direct);
@@ -849,6 +886,8 @@ public static class QBEGenerator
private static Val EmitBinaryExpression(BoundBinaryExpressionNode binaryExpression)
{
_debugEmitter.EmitDebugLocation(binaryExpression);
var left = EmitUnwrap(EmitExpression(binaryExpression.Left));
var right = EmitUnwrap(EmitExpression(binaryExpression.Right));
@@ -966,6 +1005,8 @@ public static class QBEGenerator
private static Val EmitIdentifier(BoundIdentifierNode identifier)
{
_debugEmitter.EmitDebugLocation(identifier);
if (_definitionTable.LookupFunc(identifier.Namespace.Or(_syntaxTree.Namespace), identifier.Name).TryGetValue(out var func))
{
return new Val(FuncName(func), identifier.Type, ValKind.Direct);
@@ -981,6 +1022,8 @@ public static class QBEGenerator
private static Val EmitLiteral(BoundLiteralNode literal)
{
_debugEmitter.EmitDebugLocation(literal);
switch (literal.Kind)
{
case LiteralKind.Integer:
@@ -1063,6 +1106,8 @@ public static class QBEGenerator
private static Val EmitStructInitializer(BoundStructInitializerNode structInitializer, string? destination = null)
{
_debugEmitter.EmitDebugLocation(structInitializer);
var structDefinition = _definitionTable.LookupStruct(structInitializer.StructType.Namespace, structInitializer.StructType.Name).GetValue();
if (destination == null)
@@ -1091,6 +1136,8 @@ public static class QBEGenerator
private static Val EmitUnaryExpression(BoundUnaryExpressionNode unaryExpression)
{
_debugEmitter.EmitDebugLocation(unaryExpression);
var operand = EmitUnwrap(EmitExpression(unaryExpression.Operand));
var outputName = VarName();
@@ -1138,6 +1185,8 @@ public static class QBEGenerator
private static Val EmitMemberAccess(BoundMemberAccessNode memberAccess)
{
_debugEmitter.EmitDebugLocation(memberAccess);
var item = EmitUnwrap(EmitExpression(memberAccess.Expression));
var output = VarName();
@@ -1188,6 +1237,8 @@ public static class QBEGenerator
private static Val EmitFuncCall(BoundFuncCallNode funcCall)
{
_debugEmitter.EmitDebugLocation(funcCall);
var funcType = (NubFuncType)funcCall.Expression.Type;
var parameterStrings = new List<string>();