usbloadergx/source/lstub.h

//small group of functions to manipulate the HBC stub
//brought to you by giantpune

#ifndef _LSTUB_H_
#define _LSTUB_H_

//to set the "return to" stub for a certain ID
//!reqID is the Requested ID to return to
//!returns WII_EINTERNAL if it cant get the list of installed titles with ES functions
//!retuns -69 if the ID is not installed
//!1 if successful
s32 Set_Stub(u64 reqID);

//load the default HBC stub into memory.  as long as nothing writes to the 0x80001800
// +0xDC7 memory block it will stay there.  by default it has 0x00010001/JODI.
void loadStub();

//get whatever ID the stub is set to load
//!returns 0 if no stub is loaded into memory (must be the HBC stub at 0x800018000)
//!otherwise returns the ID set to return to
u64 getStubDest();

//returns 0 or 1 depending on wether the stub is available
u8 hbcStubAvailable();

//returns a valid title to return to
u64 returnTo(u64 currentStub);

#endif