@@ -0,0 +1,38 @@
+/* Copyright (c) 2013-2016 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#ifndef M_CORE_H
+#define M_CORE_H
+
+#include "util/common.h"
+
+struct VFile;
+
+struct mCore {
+	void* cpu;
+	void* board;
+
+	bool (*init)(struct mCore*);
+	void (*deinit)(struct mCore*);
+
+	void (*desiredVideoDimensions)(struct mCore*, unsigned* width, unsigned* height);
+	void (*setVideoBuffer)(struct mCore*, void* buffer, size_t stride);
+
+	bool (*isROM)(struct mCore*, struct VFile* vf);
+	bool (*loadROM)(struct mCore*, struct VFile* vf, struct VFile* save, const char* fname);
+	void (*unloadROM)(struct mCore*);
+
+	bool (*loadBIOS)(struct mCore*, struct VFile* vf, int biosID);
+	bool (*selectBIOS)(struct mCore*, int biosID);
+
+	void (*reset)(struct mCore*);
+	void (*runFrame)(struct mCore*);
+	void (*runLoop)(struct mCore*);
+	void (*step)(struct mCore*);
+
+	void (*setKeys)(struct mCore*, uint32_t keys);
+};
+
+#endif

@@ -0,0 +1,16 @@
+/* Copyright (c) 2013-2016 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include "log.h"
+
+struct mLogger* mLogGetContext(void) {
+	return NULL; // TODO
+}
+
+int mLogGenerateCategory(void) {
+	static int category = 0;
+	++category;
+	return category;
+}

@@ -0,0 +1,55 @@
+/* Copyright (c) 2013-2016 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#ifndef M_LOG_H
+#define M_LOG_H
+
+#include "util/common.h"
+
+enum mLogLevel {
+	mLOG_FATAL = 0x01,
+	mLOG_ERROR = 0x02,
+	mLOG_WARN = 0x04,
+	mLOG_INFO = 0x08,
+	mLOG_DEBUG = 0x10,
+	mLOG_STUB = 0x20,
+	mLOG_GAME_ERROR = 0x40
+};
+
+struct mLogger {
+	ATTRIBUTE_FORMAT(printf, 4, 5)
+	void (*log)(struct mLogger*, int category, enum mLogLevel level, const char* format, ...);
+};
+
+struct mLogger* mLogGetContext(void);
+int mLogGenerateCategory(void);
+
+ATTRIBUTE_FORMAT(printf, 3, 4)
+static inline void _mLog(int (*category)(void), enum mLogLevel level, const char* format, ...) {
+	struct mLogger* context = mLogGetContext();
+	va_list args;
+	va_start(args, format);
+	if (context) {
+		context->log(context, category(), level, format, args);
+	} else {
+		vprintf(format, args);
+		printf("\n");
+	}
+	va_end(args);
+}
+
+#define mLOG(CATEGORY, LEVEL, ...) _mLog(_mLOG_CAT_ ## CATEGORY, mLOG_ ## LEVEL, __VA_ARGS__)
+
+#define mLOG_DECLARE_CATEGORY(CATEGORY) int _mLOG_CAT_ ## CATEGORY (void);
+#define mLOG_DEFINE_CATEGORY(CATEGORY) \
+	int _mLOG_CAT_ ## CATEGORY (void) { \
+		static int category = 0; \
+		if (!category) { \
+			category = mLogGenerateCategory(); \
+		} \
+		return category; \
+	}
+
+#endif