@@ -5,12 +5,26 @@ * 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"
 
+#define MAX_CATEGORY 64
+
 struct mLogger* mLogGetContext(void) {
 	return NULL; // TODO
 }
 
-int mLogGenerateCategory(void) {
-	static int category = 0;
-	++category;
-	return category;
+static int _category = 0;
+static const char* _categoryNames[MAX_CATEGORY];
+
+int mLogGenerateCategory(const char* name) {
+	++_category;
+	if (_category < MAX_CATEGORY) {
+		_categoryNames[_category] = name;
+	}
+	return _category;
+}
+
+const char* mLogCategoryName(int category) {
+	if (category < MAX_CATEGORY) {
+		return _categoryNames[category];
+	}
+	return 0;
 }

@@ -24,7 +24,8 @@ void (*log)(struct mLogger*, int category, enum mLogLevel level, const char* format, ...);
 };
 
 struct mLogger* mLogGetContext(void);
-int mLogGenerateCategory(void);
+int mLogGenerateCategory(const char*);
+const char* mLogCategoryName(int);
 
 ATTRIBUTE_FORMAT(printf, 3, 4)
 static inline void _mLog(int (*category)(void), enum mLogLevel level, const char* format, ...) {
@@ -34,6 +35,7 @@ va_start(args, format);
 	if (context) {
 		context->log(context, category(), level, format, args);
 	} else {
+		printf("%s: ", mLogCategoryName(category()));
 		vprintf(format, args);
 		printf("\n");
 	}
@@ -43,11 +45,11 @@
 #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) \
+#define mLOG_DEFINE_CATEGORY(CATEGORY, NAME) \
 	int _mLOG_CAT_ ## CATEGORY (void) { \
 		static int category = 0; \
 		if (!category) { \
-			category = mLogGenerateCategory(); \
+			category = mLogGenerateCategory(NAME); \
 		} \
 		return category; \
 	}

@@ -20,7 +20,7 @@ const uint32_t SGB_LR35902_FREQUENCY = 0x418B1E;
 
 const uint32_t GB_COMPONENT_MAGIC = 0x400000;
 
-mLOG_DEFINE_CATEGORY(GB);
+mLOG_DEFINE_CATEGORY(GB, "GB");
 
 static void GBInit(struct LR35902Core* cpu, struct LR35902Component* component);
 static void GBInterruptHandlerInit(struct LR35902InterruptHandler* irqh);

@@ -7,7 +7,7 @@ #include "io.h"
 
 #include "gb/gb.h"
 
-mLOG_DEFINE_CATEGORY(GB_IO);
+mLOG_DEFINE_CATEGORY(GB_IO, "GB I/O");
 
 void GBIOInit(struct GB* gb) {
 	memset(gb->memory.io, 0, sizeof(gb->memory.io));

@@ -13,8 +13,8 @@ #include "util/memory.h"
 
 #include <time.h>
 
-mLOG_DEFINE_CATEGORY(GB_MBC);
-mLOG_DEFINE_CATEGORY(GB_MEM);
+mLOG_DEFINE_CATEGORY(GB_MBC, "GB MBC");
+mLOG_DEFINE_CATEGORY(GB_MEM, "GB Memory");
 
 static void _GBMBCNone(struct GBMemory* memory, uint16_t address, uint8_t value) {
 	UNUSED(memory);