Allow raw read request to xiso images

src/io.cpp

@@ -172,7 +172,6 @@ namespace io {
 	}
 
 	static cpu_t *lc86cpu;
-	static input_t dvd_input_type;
 	static std::jthread jthr;
 	static std::deque<std::unique_ptr<io_request>> curr_io_queue;
 	static std::vector<std::unique_ptr<io_request>> pending_io_vec;
@@ -195,12 +194,18 @@ namespace io {
 				return false;
 			}
 			else {
-				auto pair = xbox_handle_map[handle].emplace(handle, io_file_info{ std::move(*opt), resolved_path.string(), 0 });
+				auto pair = xbox_handle_map[handle].emplace(handle, io_file_info{ std::move(*opt), resolved_path.string(), handle == CDROM_HANDLE ? xiso::image_offset : 0 });
 				assert(pair.second == true);
 				return true;
 			}
 			};
 
+		if (dvd_input_type == input_t::xiso) {
+			if (!lambda((xiso::dvd_image_path).make_preferred(), CDROM_HANDLE)) {
+				return false;
+			}
+		}
+
 		if (!lambda((eeprom_path / "eeprom.bin").make_preferred(), EEPROM_HANDLE)) {
 			return false;
 		}

src/io.hpp

@@ -14,6 +14,7 @@ namespace io {
 	inline bool pending_packets = false;
 	inline util::xbox_string xbe_name;
 	inline util::xbox_string xbe_path;
+	inline input_t dvd_input_type;
 
 	bool init(const init_info_t &init_info, cpu_t *cpu);
 	void stop();

src/kernel.cpp

@@ -59,6 +59,10 @@ namespace kernel {
 			value = static_cast<uint32_t>(curr_us / 1000);
 			break;
 
+		case DVD_INPUT_TYPE:
+			value = static_cast<uint32_t>(io::dvd_input_type);
+			break;
+
 		case IO_CHECK_ENQUEUE:
 			value = io::pending_packets;
 			break;

src/kernel.hpp

@@ -22,7 +22,7 @@ namespace kernel {
 		IO_START,
 		IO_RETRY,
 		IO_QUERY,
-		UNUSED1,
+		DVD_INPUT_TYPE,
 		IO_CHECK_ENQUEUE,
 		UNUSED2,
 		UNUSED3,

src/xiso.cpp

@@ -49,7 +49,6 @@ namespace xiso {
 
 	static_assert(sizeof(volume_desc_t) == 2048);
 	static constexpr char magic[] = { 'M', 'I', 'C', 'R', 'O', 'S', 'O', 'F', 'T', '*', 'X', 'B', 'O', 'X', '*', 'M', 'E', 'D', 'I', 'A' };
-	static size_t image_offset; // offset to add to reach the game partition
 	static uint32_t root_dirent_first_sector;
 
 

src/xiso.hpp

@@ -18,6 +18,7 @@ namespace xiso {
 	};
 
 	inline std::filesystem::path dvd_image_path;
+	inline size_t image_offset; // offset to add to reach the game partition
 
 	bool validate(std::string_view arg_str);
 	file_info_t search_file(std::string_view arg_str);