emualtor working

h8536/pseudocode.py

@@ -7,6 +7,8 @@ from dataclasses import dataclass
 from pathlib import Path
 from typing import Any
 
+from .consistency import is_byte_immediate_to_word_destination
+
 
 JsonObject = dict[str, Any]
 
@@ -195,6 +197,8 @@ def _file_header(source_name: str, payload: JsonObject) -> list[str]:
         "u8 CCR, BR, EP, DP, TP;",
         "int C, Z, N, V;",
         "",
+        "static inline u16 zero_extend8_to16(u8 value) { return (u16)value; }",
+        "",
     ]
 
 
@@ -648,6 +652,8 @@ def _translate_instruction(ins: JsonObject, labels: dict[int, str]) -> str:
     if base in {"MOV", "MOV:G", "MOV:I", "MOV:E", "MOV:L", "MOV:S", "MOV:F"} and len(ops) == 2:
         source = _format_operand(ops[0], size)
         dest = _format_operand(ops[1], size, lvalue=True)
+        if is_byte_immediate_to_word_destination(ins):
+            return f"{dest} = zero_extend8_to16({source});"
         return f"{dest} = {_cast(source, size)};"
 
     if base in {"MOVFPE"} and len(ops) == 2:
@@ -908,6 +914,9 @@ def _metadata_comments(ins: JsonObject) -> list[str]:
         if isinstance(item, dict) and item.get("comment"):
             comments.append(str(item["comment"]))
 
+    if is_byte_immediate_to_word_destination(ins):
+        comments.append("byte immediate zero-extended into word destination")
+
     board_profile = ins.get("board_profile")
     if isinstance(board_profile, dict) and board_profile.get("comment"):
         comments.append(str(board_profile["comment"]))