JS: Fix seeking to end on large files.

jpd002 · Aug 26, 2024 · 9a37181 · 9a37181
1 parent 7f4107c
commit 9a37181
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/Source/Js_DiscImageDeviceStream.cpp b/Source/Js_DiscImageDeviceStream.cpp
@@ -15,7 +15,11 @@ void CJsDiscImageDeviceStream::Seek(int64 position, Framework::STREAM_SEEK_DIREC
 		m_position += position;
 		break;
 	case Framework::STREAM_SEEK_END:
-		m_position = MAIN_THREAD_EM_ASM_INT({return Module.discImageDevice.getFileSize()});
+		{
+			uint32 positionLo = MAIN_THREAD_EM_ASM_INT({return Module.discImageDevice.getFileSize()});
+			uint32 positionHi = MAIN_THREAD_EM_ASM_INT({return Module.discImageDevice.getFileSize() / 4294967296});
+			m_position = static_cast<uint64>(positionLo) | (static_cast<uint64>(positionHi) << 32);
+		}
 		break;
 	}
 }