Improved debug info emit

compiler/NubLang.CLI/Program.cs

@@ -91,10 +91,10 @@ if (moduleRepository.Modules().TryGetValue("main", out var mainModule))
                        .text
                        .globl _start
                        _start:
-                           mov rdi, rsp           # Pass stack pointer to main (argv-like)
+                           mov rdi, [rsp + 8]   # Pass stack pointer to main (argv-like)
                            call {mainFunction.ExternSymbol}
-                           mov rdi, rax           # Move return value into rdi
-                           mov rax, 60            # syscall: exit
+                           mov rdi, rax         # Move return value into rdi
+                           mov rax, 60          # syscall: exit
                            syscall
 
                        """;
@@ -102,8 +102,9 @@ if (moduleRepository.Modules().TryGetValue("main", out var mainModule))
         var runtimePath = Path.Combine(".build", "runtime.s");
         File.WriteAllText(runtimePath, runtime);
 
-        using var assembleProcess = Process.Start(new ProcessStartInfo("as", ["-c", runtimePath, "-o", Path.Combine(".build", "runtime.o")]));
+        using var assembleProcess = Process.Start(new ProcessStartInfo("as", ["-g", "-c", runtimePath, "-o", Path.Combine(".build", "runtime.o")]));
         if (assembleProcess == null) return 1;
+        assembleProcess.WaitForExit();
 
         if (assembleProcess.ExitCode != 0)
         {

compiler/NubLang/Generation/Generator.cs

@@ -166,7 +166,7 @@ public class Generator
 
         foreach (var funcNode in _definitions.OfType<FuncNode>())
         {
-            EmitLine(funcNode.Tokens);
+            EmitLine(funcNode.Tokens.FirstOrDefault());
             appendNewLine = true;
             var parameters = funcNode.Signature.Parameters.Count != 0
                 ? string.Join(", ", funcNode.Signature.Parameters.Select(x => MapNameWithType(x.Type, x.Name)))
@@ -185,7 +185,7 @@ public class Generator
         {
             foreach (var structFuncNode in structNode.Functions)
             {
-                EmitLine(structFuncNode.Tokens);
+                EmitLine(structFuncNode.Tokens.FirstOrDefault());
                 var parameters = structFuncNode.Signature.Parameters.Count != 0
                     ? string.Join(", ", structFuncNode.Signature.Parameters.Select(x => MapNameWithType(x.Type, x.Name)))
                     : "void";
@@ -201,7 +201,7 @@ public class Generator
         {
             if (funcNode.Body == null) continue;
 
-            EmitLine(funcNode.Tokens);
+            EmitLine(funcNode.Tokens.FirstOrDefault());
             var parameters = funcNode.Signature.Parameters.Count != 0
                 ? string.Join(", ", funcNode.Signature.Parameters.Select(x => MapNameWithType(x.Type, x.Name)))
                 : "void";
@@ -236,7 +236,7 @@ public class Generator
 
     private void EmitStatement(StatementNode statementNode)
     {
-        EmitLine(statementNode.Tokens);
+        EmitLine(statementNode.Tokens.FirstOrDefault());
         switch (statementNode)
         {
             case AssignmentNode assignmentNode:
@@ -277,14 +277,12 @@ public class Generator
         }
     }
 
-    private void EmitLine(List<Token> tokens)
+    private void EmitLine(Token? token)
     {
-        if (tokens.Count >= 1)
-        {
-            var file = tokens[0].Span.FilePath;
-            var line = tokens[0].Span.Start.Line;
-            _writer.WriteLine($"#line {line} \"{file}\"");
-        }
+        if (token == null) return;
+        var file = token.Span.FilePath;
+        var line = token.Span.Start.Line;
+        _writer.WriteLine($"#line {line} \"{file}\"");
     }
 
     private void EmitAssignment(AssignmentNode assignmentNode)
@@ -352,10 +350,12 @@ public class Generator
                     EmitStatement(blockDefers[i].Statement);
                 }
 
+                EmitLine(returnNode.Tokens.FirstOrDefault());
                 _writer.WriteLine($"return {tmp};");
             }
             else
             {
+                EmitLine(returnNode.Tokens.FirstOrDefault());
                 _writer.WriteLine($"return {returnValue};");
             }
         }
@@ -670,6 +670,7 @@ public class Generator
 
     private void EmitBlock(BlockNode blockNode)
     {
+        EmitLine(blockNode.Tokens.FirstOrDefault());
         _writer.WriteLine("{");
         using (_writer.Indent())
         {
@@ -687,6 +688,7 @@ public class Generator
             }
         }
 
+        EmitLine(blockNode.Tokens.LastOrDefault());
         _writer.WriteLine("}");
     }
 }

examples/hello-world/main.nub

@@ -4,6 +4,7 @@ extern "puts" func puts(text: cstring)
 
 extern "main" func main(args: []cstring): i64
 {
+    defer puts("Goodybye World")
     puts("Hello World")
     return 0
 }

examples/raylib/makefile

@@ -1,6 +1,5 @@
-out: main.nub generated/raylib.nub
+.build/out: main.nub generated/raylib.nub
 	nubc main.nub generated/raylib.nub raylib-5.5_linux_amd64/lib/libraylib.a
 
 clean:
 	@rm -r .build 2>/dev/null || true
-	@rm out 2>/dev/null || true

examples/raylib/x86_64.s

@@ -1,10 +0,0 @@
-.intel_syntax noprefix
-
-.text
-.globl _start
-_start:
-    mov rdi, rsp
-    call main
-    mov rdi, rax
-    mov rax, 60
-    syscall