Introduce service_manager, also fix hb:ldr pm/pm race condition

sysmodules/rosalina/include/errdisp.h

@@ -27,8 +27,5 @@
 #pragma once
 
 #include <3ds/types.h>
-#include "MyThread.h"
 
-MyThread *errDispCreateThread(void);
-
-void errDispThreadMain(void);
+void ERRF_HandleCommands(void *ctx);

sysmodules/rosalina/include/hbloader.h

@@ -33,6 +33,4 @@
 #define HBLDR_DEFAULT_3DSX_TID  0x000400000D921E00ULL
 #define HBLDR_3DSX_TID          (*(vu64 *)0x1FF81100)
 
-MyThread *hbldrCreateThread(void);
-
-void hbldrThreadMain(void);
+void HBLDR_HandleCommands(void *ctx);

sysmodules/rosalina/include/service_manager.h

@@ -0,0 +1,48 @@
+/*
+*   This file is part of Luma3DS
+*   Copyright (C) 2016-2019 Aurora Wright, TuxSH
+*
+*   This program is free software: you can redistribute it and/or modify
+*   it under the terms of the GNU General Public License as published by
+*   the Free Software Foundation, either version 3 of the License, or
+*   (at your option) any later version.
+*
+*   This program is distributed in the hope that it will be useful,
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*   GNU General Public License for more details.
+*
+*   You should have received a copy of the GNU General Public License
+*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+*   Additional Terms 7.b and 7.c of GPLv3 apply to this file:
+*       * Requiring preservation of specified reasonable legal notices or
+*         author attributions in that material or in the Appropriate Legal
+*         Notices displayed by works containing it.
+*       * Prohibiting misrepresentation of the origin of that material,
+*         or requiring that modified versions of such material be marked in
+*         reasonable ways as different from the original version.
+*/
+
+#pragma once
+
+#include <3ds/types.h>
+
+typedef struct ServiceManagerServiceEntry {
+    const char *name;
+    u32 maxSessions;
+    void (*handler)(void *ctx);
+    bool isGlobalPort;
+} ServiceManagerServiceEntry;
+
+typedef struct ServiceManagerNotificationEntry {
+    u32 id;
+    void (*handler)(u32 id);
+} ServiceManagerNotificationEntry;
+
+typedef struct ServiceManagerContextAllocator {
+    void* (*newSessionContext)(u8 serviceId);
+    void  (*freeSessionContext)(void *ctx);
+} ServiceManagerContextAllocator;
+
+Result ServiceManager_Run(const ServiceManagerServiceEntry *services, const ServiceManagerNotificationEntry *notifications, const ServiceManagerContextAllocator *allocator);