From 8da91137afcf521c2d691c43c30f10d2d0ccec4c Mon Sep 17 00:00:00 2001
From: Maschell <Maschell@gmx.de>
Date: Wed, 5 Jan 2022 16:20:42 +0100
Subject: [PATCH] Fix launching various applications such as the Amiibo Setting
 when not running the homebrew launcher before.

---
 src/entry.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/src/entry.c b/src/entry.c
index 075cd1e..260a4b0 100644
--- a/src/entry.c
+++ b/src/entry.c
@@ -307,6 +307,24 @@ void __attribute__ ((noinline)) kern_write(void *addr, uint32_t value) {
     );
 }
 
+/*
+unsigned int _start(int argc, char **argv) {
+    if (OSGetTitleID() == 0x000500101004A200 || // mii maker eur
+        OSGetTitleID() == 0x000500101004A100 || // mii maker usa
+        OSGetTitleID() == 0x000500101004A000) { // mii maker jpn
+        // load hbl
+        return EXIT_SUCCESS;
+    }
+    // load real application
+    return EXIT_RELAUNCH_ON_LOAD;
+}
+ */
+const unsigned char homebrew_stub[] =
+        {0x94, 0x21, 0xff, 0xf8, 0x7c, 0x08, 0x02, 0xa6, 0x90, 0x01, 0x00, 0x0c, 0x48, 0x81, 0xd5, 0xc1, 0x6c, 0x69, 0x00, 0x05, 0x2c, 0x09, 0x00, 0x10, 0x40, 0x82, 0x00, 0x10, 0x6c, 0x89, 0xef, 0xfb,
+         0x2c, 0x09, 0xa2, 0x00, 0x41, 0x82, 0x00, 0x3c, 0x48, 0x81, 0xd5, 0xa5, 0x6c, 0x69, 0x00, 0x05, 0x2c, 0x09, 0x00, 0x10, 0x40, 0x82, 0x00, 0x10, 0x6c, 0x89, 0xef, 0xfb, 0x2c, 0x09, 0xa1, 0x00,
+         0x41, 0x82, 0x00, 0x20, 0x48, 0x81, 0xd5, 0x89, 0x6c, 0x69, 0x00, 0x05, 0x2c, 0x09, 0x00, 0x10, 0x40, 0x82, 0x00, 0x24, 0x6c, 0x89, 0xef, 0xfb, 0x2c, 0x09, 0xa0, 0x00, 0x40, 0x82, 0x00, 0x18,
+         0x38, 0x60, 0x00, 0x00, 0x80, 0x01, 0x00, 0x0c, 0x38, 0x21, 0x00, 0x08, 0x7c, 0x08, 0x03, 0xa6, 0x4e, 0x80, 0x00, 0x20, 0x38, 0x60, 0xff, 0xfd, 0x4b, 0xff, 0xff, 0xec};
+
 /* ****************************************************************** */
 /*                         INSTALL PATCHES                            */
 /* All OS specific stuff is done here                                 */
@@ -324,6 +342,12 @@ static void InstallPatches(private_data_t *private_data) {
     private_data->memcpy((void*)&ELF_DATA_ADDR, &bufferU32, sizeof(bufferU32));
     bufferU32 = 0;
     private_data->memcpy((void*)&ELF_DATA_SIZE, &bufferU32, sizeof(bufferU32));
+    private_data->memcpy((void*)&HBL_CHANNEL, &bufferU32, sizeof(bufferU32));
+    
+    // If we install the sd_loader but don't have any homebrew loaded some applications won't start.
+    // We load a stub that just opens the real app and opens the hbl when opening the mii maker.
+    private_data->memcpy((void *) 0x00802000, homebrew_stub, sizeof(homebrew_stub));
+    MAIN_ENTRY_ADDR = 0x00802000;
 
     osSpecificFunctions.addr_OSDynLoad_Acquire = (unsigned int)OSDynLoad_Acquire;
     osSpecificFunctions.addr_OSDynLoad_FindExport = (unsigned int)OSDynLoad_FindExport;