usbloadergx/source/patches/patchcode.c

/*
 *  Copyright (C) 2008 Nuke (wiinuke@gmail.com)
 *
 *  this file is part of GeckoOS for USB Gecko
 *  http://www.usbgecko.com
 *
 *  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 2 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, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <gccore.h>
#include <sys/unistd.h>

#include "usbloader/apploader.h"
#include "patchcode.h"
#include "settings/cfg.h"
#include "FileOperations/fileops.h"
#include "fst.h"

//#include "sd.h"
//#include "fwrite_patch.h"
//#include "fwrite_patch_slota.h"
//#include "main.h"

extern const char * CheatFilepath;

extern void patchhook(u32 address, u32 len);
extern void patchhook2(u32 address, u32 len);
extern void patchhook3(u32 address, u32 len);

extern void multidolpatchone(u32 address, u32 len);
extern void multidolpatchtwo(u32 address, u32 len);

extern void regionfreejap(u32 address, u32 len);
extern void regionfreeusa(u32 address, u32 len);
extern void regionfreepal(u32 address, u32 len);

extern void removehealthcheck(u32 address, u32 len);

extern void copyflagcheck1(u32 address, u32 len);
extern void copyflagcheck2(u32 address, u32 len);
extern void copyflagcheck3(u32 address, u32 len);
extern void copyflagcheck4(u32 address, u32 len);
extern void copyflagcheck5(u32 address, u32 len);

extern void patchupdatecheck(u32 address, u32 len);

extern void movedvdhooks(u32 address, u32 len);

extern void multidolhook(u32 address);
extern void langvipatch(u32 address, u32 len, u8 langbyte);
extern void vipatch(u32 address, u32 len);

static const u32 multidolpatch1[2] = { 0x3C03FFB4, 0x28004F43 };

static const u32 healthcheckhook[2] = { 0x41810010, 0x881D007D };

static const u32 updatecheckhook[3] = { 0x80650050, 0x80850054, 0xA0A50058 };

static const u32 multidolpatch2[2] = { 0x3F608000, 0x807B0018 };

static const u32 recoveryhooks[3] = { 0xA00100AC, 0x5400073E, 0x2C00000F };

static const u32 nocopyflag1[3] = { 0x540007FF, 0x4182001C, 0x80630068 };

static const u32 nocopyflag2[3] = { 0x540007FF, 0x41820024, 0x387E12E2 };

// this one is for the GH3 and VC saves
//static const u32 nocopyflag3[5] = {
//  0x2C030000, 0x40820010, 0x88010020, 0x28000002, 0x41820234
//};

static const u32 nocopyflag3[5] = { 0x2C030000, 0x41820200, 0x48000058, 0x38610100 };
// this removes the display warning for no copy VC and GH3 saves
static const u32 nocopyflag4[4] = { 0x80010008, 0x2C000000, 0x4182000C, 0x3BE00001 };

static const u32 nocopyflag5[3] = { 0x801D0024, 0x540007FF, 0x41820024 };

static const u32 movedvdpatch[3] = { 0x2C040000, 0x41820120, 0x3C608109 };

static const u32 regionfreehooks[5] = { 0x7C600774, 0x2C000001, 0x41820030, 0x40800010, 0x2C000000 };

static const u32 cIOScode[16] = { 0x7f06c378, 0x7f25cb78, 0x387e02c0, 0x4cc63182 };

static const u32 cIOSblock[16] = { 0x2C1800F9, 0x40820008, 0x3B000024 };

static const u32 fwritepatch[8] = { 0x9421FFD0, 0x7C0802A6, 0x90010034, 0xBF210014, 0x7C9B2378, 0x7CDC3378, 0x7C7A1B78,
        0x7CB92B78 // bushing fwrite
        };

static const u32 vipatchcode[3] = { 0x4182000C, 0x4180001C, 0x48000018 };

const u32 viwiihooks[4] = { 0x7CE33B78, 0x38870034, 0x38A70038, 0x38C7004C };

const u32 kpadhooks[4] = { 0x9A3F005E, 0x38AE0080, 0x389FFFFC, 0x7E0903A6 };

const u32 kpadoldhooks[6] = { 0x801D0060, 0x901E0060, 0x801D0064, 0x901E0064, 0x801D0068, 0x901E0068 };

const u32 joypadhooks[4] = { 0x3AB50001, 0x3A73000C, 0x2C150004, 0x3B18000C };

const u32 gxdrawhooks[4] = { 0x3CA0CC01, 0x38000061, 0x3C804500, 0x98058000 };

const u32 gxflushhooks[4] = { 0x90010014, 0x800305FC, 0x2C000000, 0x41820008 };

const u32 ossleepthreadhooks[4] = { 0x90A402E0, 0x806502E4, 0x908502E4, 0x2C030000 };

const u32 axnextframehooks[4] = { 0x3800000E, 0x7FE3FB78, 0xB0050000, 0x38800080 };

const u32 wpadbuttonsdownhooks[4] = { 0x7D6B4A14, 0x816B0010, 0x7D635B78, 0x4E800020 };

const u32 wpadbuttonsdown2hooks[4] = { 0x7D6B4A14, 0x800B0010, 0x7C030378, 0x4E800020 };

const u32 multidolhooks[4] = { 0x7C0004AC, 0x4C00012C, 0x7FE903A6, 0x4E800420 };

const u32 multidolchanhooks[4] = { 0x4200FFF4, 0x48000004, 0x38800000, 0x4E800020 };

const u32 langpatch[3] = { 0x7C600775, 0x40820010, 0x38000000 };

static const u32 oldpatch002[3] = { 0x2C000000, 0x40820214, 0x3C608000 };

static const u32 newpatch002[3] = { 0x2C000000, 0x48000214, 0x3C608000 };

//---------------------------------------------------------------------------------
bool dogamehooks(void *addr, u32 len)
//---------------------------------------------------------------------------------
{
    if (!CheatFilepath) return false;

    //this is temporary since the screen freezes without a file loaded
    char filepath[150];
    char GameId[10];
    memcpy(GameId, (u8 *) 0x80000000, 6);
    GameId[6] = 0;
    sprintf(filepath, "%s%s.gct", CheatFilepath, GameId);

    if (!CheckFile(filepath)) return false;

    //TODO for oggzee: when using Ocarina check if a hook as patched

    hooktype = 1; // TODO for oggzee: Create an option for hooktype
    /*
     0 No Hook
     1 VBI
     2 KPAD read
     3 Joypad Hook
     4 GXDraw Hook
     5 GXFlush Hook
     6 OSSleepThread Hook
     7 AXNextFrame Hook
     */

    void *addr_start = addr;
    void *addr_end = addr + len;
    bool hookpatched = false;

    while (addr_start < addr_end)
    {
        switch (hooktype)
        {

            case 0x00:
                hookpatched = true;
                break;

            case 0x01:
                if (memcmp(addr_start, viwiihooks, sizeof(viwiihooks)) == 0)
                {
                    patchhook((u32) addr_start, len);
                    hookpatched = true;
                }
                if (memcmp(addr_start, multidolhooks, sizeof(multidolhooks)) == 0)
                {
                    multidolhook((u32) addr_start + sizeof(multidolhooks) - 4);
                    hookpatched = true;
                }
                break;

            case 0x02:

                if (memcmp(addr_start, kpadhooks, sizeof(kpadhooks)) == 0)
                {
                    patchhook((u32) addr_start, len);
                    hookpatched = true;
                }

                if (memcmp(addr_start, kpadoldhooks, sizeof(kpadoldhooks)) == 0)
                {
                    patchhook((u32) addr_start, len);
                    hookpatched = true;
                }
                if (memcmp(addr_start, multidolhooks, sizeof(multidolhooks)) == 0)
                {
                    multidolhook((u32) addr_start + sizeof(multidolhooks) - 4);
                    hookpatched = true;
                }
                break;

            case 0x03:

                if (memcmp(addr_start, joypadhooks, sizeof(joypadhooks)) == 0)
                {
                    patchhook((u32) addr_start, len);
                    hookpatched = true;
                }
                if (memcmp(addr_start, multidolhooks, sizeof(multidolhooks)) == 0)
                {
                    multidolhook((u32) addr_start + sizeof(multidolhooks) - 4);
                    hookpatched = true;
                }
                break;

            case 0x04:

                if (memcmp(addr_start, gxdrawhooks, sizeof(gxdrawhooks)) == 0)
                {
                    patchhook((u32) addr_start, len);
                    hookpatched = true;
                }
                if (memcmp(addr_start, multidolhooks, sizeof(multidolhooks)) == 0)
                {
                    multidolhook((u32) addr_start + sizeof(multidolhooks) - 4);
                    hookpatched = true;
                }
                break;

            case 0x05:

                if (memcmp(addr_start, gxflushhooks, sizeof(gxflushhooks)) == 0)
                {
                    patchhook((u32) addr_start, len);
                    hookpatched = true;
                }
                if (memcmp(addr_start, multidolhooks, sizeof(multidolhooks)) == 0)
                {
                    multidolhook((u32) addr_start + sizeof(multidolhooks) - 4);
                    hookpatched = true;
                }
                break;

            case 0x06:

                if (memcmp(addr_start, ossleepthreadhooks, sizeof(ossleepthreadhooks)) == 0)
                {
                    patchhook((u32) addr_start, len);
                    hookpatched = true;
                }
                if (memcmp(addr_start, multidolhooks, sizeof(multidolhooks)) == 0)
                {
                    multidolhook((u32) addr_start + sizeof(multidolhooks) - 4);
                    hookpatched = true;
                }
                break;

            case 0x07:

                if (memcmp(addr_start, axnextframehooks, sizeof(axnextframehooks)) == 0)
                {
                    patchhook((u32) addr_start, len);
                    hookpatched = true;
                }
                if (memcmp(addr_start, multidolhooks, sizeof(multidolhooks)) == 0)
                {
                    multidolhook((u32) addr_start + sizeof(multidolhooks) - 4);
                    hookpatched = true;
                }
                break;

            case 0x08:

                //if(memcmp(addr_start, customhook, customhooksize)==0)
                //{
                //  patchhook((u32)addr_start, len);
                //  hookpatched = true;
                //}
                if (memcmp(addr_start, multidolhooks, sizeof(multidolhooks)) == 0)
                {
                    multidolhook((u32) addr_start + sizeof(multidolhooks) - 4);
                    hookpatched = true;
                }
                break;
        }
        addr_start += 4;
    }
    return hookpatched;
}

// Not used yet, for patching DOL once loaded into memory and befor execution
/*
 void patchdol(void *addr, u32 len)
 {

 void *addr_start = addr;
 void *addr_end = addr+len;

 while(addr_start < addr_end)
 {
 if(memcmp(addr_start, wpadlibogc, sizeof(wpadlibogc))==0) {
 //      printf("\n\n\n");
 //      printf("found at address %x\n", addr_start);
 //  sleep(10);
 //      patchhookdol((u32)addr_start, len);
 patched = 1;
 break;
 }
 addr_start += 4;
 }
 }
 */
void langpatcher(void *addr, u32 len)
{

    void *addr_start = addr;
    void *addr_end = addr + len;

    while (addr_start < addr_end)
    {

        if (memcmp(addr_start, langpatch, sizeof(langpatch)) == 0)
        {
            if (configbytes[0] != 0xCD)
            {
                langvipatch((u32) addr_start, len, configbytes[0]);
            }
        }
        addr_start += 4;
    }
}
/*
 void patchdebug(void *addr, u32 len)
 {

 void *addr_start = addr;
 void *addr_end = addr+len;

 while(addr_start < addr_end)
 {

 if(memcmp(addr_start, fwritepatch, sizeof(fwritepatch))==0) {

 memcpy(addr_start,fwrite_patch_bin,fwrite_patch_bin_len);
 // apply patch
 }
 addr_start += 4;
 }
 }
 */
void vidolpatcher(void *addr, u32 len)
{

    void *addr_start = addr;
    void *addr_end = addr + len;

    while (addr_start < addr_end)
    {
        if (memcmp(addr_start, vipatchcode, sizeof(vipatchcode)) == 0)
        {
            vipatch((u32) addr_start, len);
        }
        addr_start += 4;
    }
}