PSP2: Access to ur0 and uma0 partitions

CHANGES

@@ -14,6 +14,7 @@ Features:
  - Debugger: Conditional breakpoints and watchpoints
  - Ability to select GB/GBC/SGB BIOS on console ports
  - Optional automatic state saving/loading
+ - Access to ur0 and uma0 partitions on the Vita
 Bugfixes:
  - GB Audio: Make audio unsigned with bias (fixes mgba.io/i/749)
  - GB Serialize: Fix audio state loading

include/mgba-util/vfs.h

@@ -87,7 +87,7 @@ struct VDir* VDirOpenZip(const char* path, int flags);
 struct VDir* VDirOpen7z(const char* path, int flags);
 #endif
 
-#if defined(__wii__) || defined(_3DS)
+#if defined(__wii__) || defined(_3DS) || defined(PSP2)
 struct VDir* VDeviceList(void);
 #endif
 

src/platform/psp2/main.c

@@ -89,7 +89,8 @@ int main() {
 	struct mGUIRunner runner = {
 		.params = {
 			PSP2_HORIZONTAL_PIXELS, PSP2_VERTICAL_PIXELS,
-			font, "ux0:data", _drawStart, _drawEnd,
+			font, "",
+			_drawStart, _drawEnd,
 			_pollInput, _pollCursor,
 			_batteryState,
 			0, 0,

src/platform/psp2/sce-vfs.c

@@ -52,6 +52,16 @@ static bool _vdsceDeleteFile(struct VDir* vd, const char* path);
 static const char* _vdesceName(struct VDirEntry* vde);
 static enum VFSType _vdesceType(struct VDirEntry* vde);
 
+static bool _vdlsceClose(struct VDir* vd);
+static void _vdlsceRewind(struct VDir* vd);
+static struct VDirEntry* _vdlsceListNext(struct VDir* vd);
+static struct VFile* _vdlsceOpenFile(struct VDir* vd, const char* path, int mode);
+static struct VDir* _vdlsceOpenDir(struct VDir* vd, const char* path);
+static bool _vdlsceDeleteFile(struct VDir* vd, const char* path);
+
+static const char* _vdlesceName(struct VDirEntry* vde);
+static enum VFSType _vdlesceType(struct VDirEntry* vde);
+
 struct VFile* VFileOpenSce(const char* path, int flags, SceMode mode) {
 	struct VFileSce* vfsce = malloc(sizeof(struct VFileSce));
 	if (!vfsce) {
@@ -148,6 +158,10 @@ bool _vfsceSync(struct VFile* vf, const void* buffer, size_t size) {
 }
 
 struct VDir* VDirOpen(const char* path) {
+	if (!path || !path[0]) {
+		return VDeviceList();
+	}
+
 	SceUID dir = sceIoDopen(path);
 	if (dir < 0) {
 		return 0;
@@ -250,3 +264,96 @@ static enum VFSType _vdesceType(struct VDirEntry* vde) {
 	}
 	return VFS_FILE;
 }
+
+struct VDirEntrySceDevList {
+	struct VDirEntry d;
+	ssize_t index;
+	const char* name;
+};
+
+struct VDirSceDevList {
+	struct VDir d;
+	struct VDirEntrySceDevList vde;
+};
+
+static const char* _devs[] = {
+	"ux0:",
+	"ur0:",
+	"uma0:"
+};
+
+struct VDir* VDeviceList() {
+	struct VDirSceDevList* vd = malloc(sizeof(struct VDirSceDevList));
+	if (!vd) {
+		return 0;
+	}
+
+	vd->d.close = _vdlsceClose;
+	vd->d.rewind = _vdlsceRewind;
+	vd->d.listNext = _vdlsceListNext;
+	vd->d.openFile = _vdlsceOpenFile;
+	vd->d.openDir = _vdlsceOpenDir;
+	vd->d.deleteFile = _vdlsceDeleteFile;
+
+	vd->vde.d.name = _vdlesceName;
+	vd->vde.d.type = _vdlesceType;
+	vd->vde.index = -1;
+	vd->vde.name = 0;
+
+	return &vd->d;
+}
+
+static bool _vdlsceClose(struct VDir* vd) {
+	struct VDirSceDevList* vdl = (struct VDirSceDevList*) vd;
+	free(vdl);
+	return true;
+}
+
+static void _vdlsceRewind(struct VDir* vd) {
+	struct VDirSceDevList* vdl = (struct VDirSceDevList*) vd;
+	vdl->vde.name = NULL;
+	vdl->vde.index = -1;
+}
+
+static struct VDirEntry* _vdlsceListNext(struct VDir* vd) {
+	struct VDirSceDevList* vdl = (struct VDirSceDevList*) vd;
+	while (vdl->vde.index < 3) {
+		++vdl->vde.index;
+		vdl->vde.name = _devs[vdl->vde.index];
+		SceUID dir = sceIoDopen(vdl->vde.name);
+		if (dir < 0) {
+			continue;
+		}
+		sceIoDclose(dir);
+		return &vdl->vde.d;
+	}
+	return 0;
+}
+
+static struct VFile* _vdlsceOpenFile(struct VDir* vd, const char* path, int mode) {
+	UNUSED(vd);
+	UNUSED(path);
+	UNUSED(mode);
+	return NULL;
+}
+
+static struct VDir* _vdlsceOpenDir(struct VDir* vd, const char* path) {
+	UNUSED(vd);
+	return VDirOpen(path);
+}
+
+static bool _vdlsceDeleteFile(struct VDir* vd, const char* path) {
+	UNUSED(vd);
+	UNUSED(path);
+	return false;
+}
+
+static const char* _vdlesceName(struct VDirEntry* vde) {
+	struct VDirEntrySceDevList* vdle = (struct VDirEntrySceDevList*) vde;
+	return vdle->name;
+}
+
+static enum VFSType _vdlesceType(struct VDirEntry* vde) {
+	UNUSED(vde);
+	return VFS_DIRECTORY;
+}