Add end user's code MARK

Useful for debugging purposes

Author: boriel

src/arch/zx48k/backend/__init__.py

@@ -1771,10 +1771,14 @@ def _inline(ins):
 
     i = 0
     while i < len(tmp):
-        if not tmp[i] or tmp[i][0] == ';':  # a comment or empty string?
+        if not tmp[i]:  # discard empty lines
             tmp.pop(i)
             continue
 
+        if not tmp[i] or tmp[i][0] == ';':  # a comment
+            i += 1
+            continue
+
         if tmp[i][0] == '#':  # A preprocessor directive
             i += 1
             continue
@@ -2329,7 +2333,7 @@ def remove_unused_labels(output: List[str]):
         output.pop(i)
 
 
-def emit(mem, optimize=True):
+def emit(mem: List[Quad], optimize=True):
     """ Begin converting each quad instruction to asm
     by iterating over the "mem" array, and called its
     associated function. Each function returns an array of

src/libzxbc/zxbc.py

@@ -251,6 +251,8 @@ def main(args=None, emitter=None):
     translator.emit_strings()
     # Emits jump tables
     translator.emit_jump_tables()
+    # Signals end of user code
+    translator.ic_inline(';; --- end of user code ---', zxblex.lexer.lineno)
 
     if OPTIONS.emitBackend:
         with open_file(OPTIONS.outputFileName, 'wt', 'utf-8') as output_file: