From 02b2a83eb3c9c82a35d8196fce8bb7d244a81587 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mat=C3=ADas=20Israelson?=
 <57065102+israpps@users.noreply.github.com>
Date: Tue, 26 Mar 2024 10:07:41 -0300
Subject: [PATCH] make IOP skeleton showcase module unloading

---
 skeleton/iop/hello_main.c | 34 ++++++++++++++++++++++++++++++----
 1 file changed, 30 insertions(+), 4 deletions(-)

diff --git a/skeleton/iop/hello_main.c b/skeleton/iop/hello_main.c
index 88afbc50c30..53cc086be72 100644
--- a/skeleton/iop/hello_main.c
+++ b/skeleton/iop/hello_main.c
@@ -2,7 +2,7 @@
 #include "irx_imports.h"
 
 #define MODNAME "hello"
-IRX_ID("IOP skeleton", 1, 1);
+IRX_ID("IOP_skeleton", 1, 1);
 
 extern struct irx_export_table _exp_hello;
 
@@ -12,12 +12,38 @@ extern struct irx_export_table _exp_hello;
 
 
 // This is a bit like a "main" for IRX files.
-int _start(int argc, char *argv[])
+int _start(int argc, char *argv[], void *startaddr, ModuleInfo_t *mi)
 {
-    if (RegisterLibraryEntries(&_exp_hello) != 0)
+    
+#ifndef NO_MODULE_UNLOAD_SUPPORT
+    if (argc < 0) _stop(argc, argv, startaddr, mi);
+#endif
+    if (RegisterLibraryEntries(&_exp_hello) != 0) {
+        printf("Failed to RegisterLibraryEntries()\n");
         return MODULE_NO_RESIDENT_END;
+    }
 
     hello();
 
-    return MODULE_RESIDENT_END;
+#ifdef MODULE_UNLOAD_ORIGINAL_APPROACH
+        return MODULE_REMOVABLE_END;
+#else
+#ifndef NO_MODULE_UNLOAD_SUPPORT
+        if (mi && ((mi->newflags & 2) != 0))
+            mi->newflags |= 0x10;
+#endif
+        return MODULE_RESIDENT_END;
+#endif
 }
+
+// Here you have to deinit devices, free memory, release exports,
+// or whatever cleanup is required depending on what is your module doing 
+#ifndef NO_MODULE_UNLOAD_SUPPORT
+int _stop(int argc, char *argv[], void *startaddr, ModuleInfo_t *mi)
+{
+    printf("Unloading %s module\n", MODNAME);
+    ReleaseLibraryEntries(&_exp_hello);
+    
+    return MODULE_NO_RESIDENT_END; //if the deinit process fails for whatever reason. you should return MODULE_REMOVABLE_END
+}
+#endif