Core: Clean up ROM loading

src/core/core.h

@@ -8,6 +8,10 @@
 
 #include "util/common.h"
 
+#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
+#include "core/directories.h"
+#endif
+
 struct VFile;
 struct mRTCSource;
 
@@ -24,6 +28,10 @@ struct mCore {
 	void* cpu;
 	void* board;
 
+#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
+	struct mDirectorySet dirs;
+#endif
+
 	bool (*init)(struct mCore*);
 	void (*deinit)(struct mCore*);
 
@@ -32,8 +40,9 @@ struct mCore {
 	void (*desiredVideoDimensions)(struct mCore*, unsigned* width, unsigned* height);
 	void (*setVideoBuffer)(struct mCore*, color_t* buffer, size_t stride);
 
-	bool (*isROM)(struct mCore*, struct VFile* vf);
-	bool (*loadROM)(struct mCore*, struct VFile* vf, struct VFile* save, const char* fname);
+	bool (*isROM)(struct VFile* vf);
+	bool (*loadROM)(struct mCore*, struct VFile* vf);
+	bool (*loadSave)(struct mCore*, struct VFile* vf);
 	void (*unloadROM)(struct mCore*);
 
 	bool (*loadBIOS)(struct mCore*, struct VFile* vf, int biosID);
@@ -55,4 +64,7 @@ struct mCore {
 	void (*setRTC)(struct mCore*, struct mRTCSource*);
 };
 
+bool mCoreLoadFile(struct mCore* core, const char* path);
+bool mCoreAutoloadSave(struct mCore* core);
+
 #endif

src/core/directories.c

@@ -99,9 +99,20 @@ struct VFile* mDirectorySetOpenPath(struct mDirectorySet* dirs, const char* path
 			file = 0;
 		}
 	}
+	if (file) {
+		char dirname[PATH_MAX];
+		separatePath(path, dirname, dirs->baseName, 0);
+		mDirectorySetAttachBase(dirs, VDirOpen(dirname));
+	}
 	return file;
 }
 
+struct VFile* mDirectorySetOpenSuffix(struct mDirectorySet* dirs, const char* suffix, int mode) {
+	char name[PATH_MAX];
+	snprintf(name, sizeof(name), "%s%s", dirs->baseName, suffix);
+	return dirs->base->openFile(dirs->base, name, mode);
+}
+
 void mDirectorySetMapOptions(struct mDirectorySet* dirs, const struct GBAOptions* opts) {
 	if (opts->savegamePath) {
 		struct VDir* dir = VDirOpen(opts->savegamePath);

src/core/directories.h

@@ -12,6 +12,7 @@
 struct VDir;
 
 struct mDirectorySet {
+	char baseName[PATH_MAX];
 	struct VDir* base;
 	struct VDir* archive;
 	struct VDir* save;
@@ -27,6 +28,7 @@ void mDirectorySetAttachBase(struct mDirectorySet* dirs, struct VDir* base);
 void mDirectorySetDetachBase(struct mDirectorySet* dirs);
 
 struct VFile* mDirectorySetOpenPath(struct mDirectorySet* dirs, const char* path, bool (*filter)(struct VFile*));
+struct VFile* mDirectorySetOpenSuffix(struct mDirectorySet* dirs, const char* suffix, int mode);
 
 struct GBAOptions;
 void mDirectorySetMapOptions(struct mDirectorySet* dirs, const struct GBAOptions* opts);

src/gb/core.c

@@ -37,6 +37,10 @@ static bool _GBCoreInit(struct mCore* core) {
 	GBVideoAssociateRenderer(&gb->video, &gbcore->renderer.d);
 
 	gb->keySource = &gbcore->keys;
+
+#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
+	mDirectorySetInit(&core->dirs);
+#endif
 	
 	return true;
 }
@@ -46,6 +50,9 @@ static void _GBCoreDeinit(struct mCore* core) {
 	GBDestroy(core->board);
 	mappedMemoryFree(core->cpu, sizeof(struct LR35902Core));
 	mappedMemoryFree(core->board, sizeof(struct GB));
+#if !defined(MINIMAL_CORE) || MINIMAL_CORE < 2
+	mDirectorySetDeinit(&core->dirs);
+#endif
 }
 
 static void _GBCoreSetSync(struct mCore* core, struct mCoreSync* sync) {
@@ -65,13 +72,12 @@ static void _GBCoreSetVideoBuffer(struct mCore* core, color_t* buffer, size_t st
 	gbcore->renderer.outputBufferStride = stride;
 }
 
-static bool _GBCoreLoadROM(struct mCore* core, struct VFile* vf, struct VFile* save, const char* fname) {
-	return GBLoadROM(core->board, vf, save, fname);
+static bool _GBCoreLoadROM(struct mCore* core, struct VFile* vf) {
+	return GBLoadROM(core->board, vf);
 }
 
-static bool _GBCoreIsROM(struct mCore* core, struct VFile* vf) {
-	UNUSED(core);
-	return GBIsROM(vf);
+static bool _GBCoreLoadSave(struct mCore* core, struct VFile* vf) {
+	return GBLoadSave(core->board, vf);
 }
 
 static void _GBCoreUnloadROM(struct mCore* core) {
@@ -144,8 +150,9 @@ struct mCore* GBCoreCreate(void) {
 	core->setSync = _GBCoreSetSync;
 	core->desiredVideoDimensions = _GBCoreDesiredVideoDimensions;
 	core->setVideoBuffer = _GBCoreSetVideoBuffer;
-	core->isROM = _GBCoreIsROM;
+	core->isROM = GBIsROM;
 	core->loadROM = _GBCoreLoadROM;
+	core->loadSave = _GBCoreLoadSave;
 	core->unloadROM = _GBCoreUnloadROM;
 	core->reset = _GBCoreReset;
 	core->runFrame = _GBCoreRunFrame;

src/gb/gb.c

@@ -60,7 +60,7 @@ static void GBInit(struct LR35902Core* cpu, struct LR35902Component* component)
 	gb->diPending = false;
 }
 
-bool GBLoadROM(struct GB* gb, struct VFile* vf, struct VFile* sav, const char* fname) {
+bool GBLoadROM(struct GB* gb, struct VFile* vf) {
 	GBUnloadROM(gb);
 	gb->romVf = vf;
 	gb->pristineRomSize = vf->size(vf);
@@ -79,21 +79,25 @@ bool GBLoadROM(struct GB* gb, struct VFile* vf, struct VFile* sav, const char* f
 	}
 	gb->yankedRomSize = 0;
 	gb->memory.rom = gb->pristineRom;
-	gb->activeFile = fname;
 	gb->memory.romSize = gb->pristineRomSize;
 	gb->romCrc32 = doCrc32(gb->memory.rom, gb->memory.romSize);
-	gb->sramVf = sav;
-	if (sav) {
+
+	// TODO: error check
+	return true;
+}
+
+bool GBLoadSave(struct GB* gb, struct VFile* vf) {
+	gb->sramVf = vf;
+	if (vf) {
 		// TODO: Do this in bank-switching code
-		if (sav->size(sav) < 0x20000) {
-			sav->truncate(sav, 0x20000);
+		if (vf->size(vf) < 0x20000) {
+			vf->truncate(vf, 0x20000);
 		}
-		gb->memory.sram = sav->map(sav, 0x20000, MAP_WRITE);
+		gb->memory.sram = vf->map(vf, 0x20000, MAP_WRITE);
 	} else {
 		gb->memory.sram = anonymousMemoryMap(0x20000);
 	}
-	return true;
-	// TODO: error check
+	return gb->memory.sram;
 }
 
 void GBUnloadROM(struct GB* gb) {

src/gb/gb.h

@@ -61,8 +61,6 @@ struct GB {
 	struct VFile* romVf;
 	struct VFile* sramVf;
 
-	const char* activeFile;
-
 	bool diPending;
 };
 
@@ -100,7 +98,8 @@ void GBHalt(struct LR35902Core* cpu);
 void GBStop(struct LR35902Core* cpu);
 
 struct VFile;
-bool GBLoadROM(struct GB* gb, struct VFile* vf, struct VFile* sav, const char* fname);
+bool GBLoadROM(struct GB* gb, struct VFile* vf);
+bool GBLoadSave(struct GB* gb, struct VFile* vf);
 void GBYankROM(struct GB* gb);
 void GBUnloadROM(struct GB* gb);
 

src/platform/sdl/main.c

@@ -284,8 +284,10 @@ int mSDLRunGB(struct mSDLRenderer* renderer, struct GBAArguments* args) {
 			.audioWait = true
 		}
 	};
-	struct VFile* vf = VFileOpen(args->fname, O_RDONLY);
-	struct VFile* savVf = 0;
+	if (!mCoreLoadFile(renderer->core, args->fname)) {
+		return 1;
+	}
+	mCoreAutoloadSave(renderer->core);
 
 	renderer->audio.samples = 1024;
 	renderer->audio.sampleRate = 44100;
@@ -293,22 +295,11 @@ int mSDLRunGB(struct mSDLRenderer* renderer, struct GBAArguments* args) {
 	GBSDLInitAudio(&renderer->audio, 0);
 	renderer->audio.sync = &thread.sync;
 
-	{
-		char savepath[PATH_MAX];
-		char dirname[PATH_MAX];
-		char basename[PATH_MAX];
-		separatePath(args->fname, dirname, basename, 0);
-		snprintf(savepath, sizeof(savepath), "%s" PATH_SEP "%s.sav", dirname, basename);
-		savVf = VFileOpen(savepath, O_RDWR | O_CREAT);
-	}
-
-	renderer->core->loadROM(renderer->core, vf, savVf, args->fname);
 	mCoreThreadStart(&thread);
 	renderer->audio.psg = 0;
 	GBSDLResumeAudio(&renderer->audio);
 	renderer->runloop(renderer, &thread);
 	renderer->core->unloadROM(renderer->core);
-	vf->close(vf);
 	return 0;
 }
 #endif