usbloadergx/source/lstub.cpp

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//functions for manipulating the HBC stub by giantpune
#include <string.h>
#include <ogcsys.h>
#include <malloc.h>
#include <stdio.h>
#include "lstub.h"
#include "gecko.h"
#include "wad/nandtitle.h"
extern const u8 stub_bin[];
extern const u32 stub_bin_size;
static char* determineStubTIDLocation()
{
u32 *stubID = (u32*) 0x80001818;
//HBC stub 1.0.6 and lower, and stub.bin
if (stubID[0] == 0x480004c1 && stubID[1] == 0x480004f5)
return (char *) 0x800024C6;
//HBC stub changed @ version 1.0.7. this file was last updated for HBC 1.0.8
else if (stubID[0] == 0x48000859 && stubID[1] == 0x4800088d) return (char *) 0x8000286A;
//hexdump( stubID, 0x20 );
return NULL;
}
s32 Set_Stub(u64 reqID)
{
if (NandTitles.IndexOf(reqID) < 0) return WII_EINSTALL;
char *stub = determineStubTIDLocation();
if (!stub) return -68;
stub[0] = TITLE_7( reqID );
stub[1] = TITLE_6( reqID );
stub[8] = TITLE_5( reqID );
stub[9] = TITLE_4( reqID );
stub[4] = TITLE_3( reqID );
stub[5] = TITLE_2( reqID );
stub[12] = TITLE_1( reqID );
stub[13] = ((u8) (reqID));
DCFlushRange(stub, 0x10);
return 1;
}
s32 Set_Stub_Split(u32 type, const char* reqID)
{
char tmp[4];
u32 lower;
sprintf(tmp, "%c%c%c%c", reqID[0], reqID[1], reqID[2], reqID[3]);
memcpy(&lower, tmp, 4);
u64 reqID64 = TITLE_ID( type, lower );
return Set_Stub(reqID64);
}
void loadStub()
{
char *stubLoc = (char *) 0x80001800;
memcpy(stubLoc, stub_bin, stub_bin_size);
DCFlushRange(stubLoc, stub_bin_size);
}
u64 getStubDest()
{
if (!hbcStubAvailable()) return 0;
char ret[8];
u64 retu = 0;
char *stub = determineStubTIDLocation();
if (!stub) return 0;
ret[0] = stub[0];
ret[1] = stub[1];
ret[2] = stub[8];
ret[3] = stub[9];
ret[4] = stub[4];
ret[5] = stub[5];
ret[6] = stub[12];
ret[7] = stub[13];
memcpy(&retu, ret, 8);
return retu;
}
u8 hbcStubAvailable()
{
char * sig = (char *) 0x80001804;
return (sig[0] == 'S' && sig[1] == 'T' && sig[2] == 'U' && sig[3] == 'B' && sig[4] == 'H' && sig[5] == 'A'
&& sig[6] == 'X' && sig[7] == 'X') ? 1 : 0;
}