usbloadergx/source/usbloader/alternatedol.c
dimok321 22ca798b5e *Added Alternate DOL support which is used to boot games that don't work due to IOS Reloads like Mortal Kombat
NOTE: There is a GameSettings you need to turn ON to load Alternate DOLs. The alternate DOL has to be called 6 IDs .dol for example RHDP8P.dol and has to be in the root of the SD. Giantpune will add custom path support i dont have time for it.
2009-06-16 11:29:07 +00:00

127 lines
3.0 KiB
C

#include <ogcsys.h>
#include <stdio.h>
#include <gccore.h>
#include <string.h>
#include <malloc.h>
#include "fatmounter.h"
/** Alternate dolloader made by WiiPower modified by dimok **/
bool Load_Dol(void **buffer, int* dollen, char * filepath)
{
int ret;
FILE* file;
void* dol_buffer;
char fullpath[200];
char gameidbuffer6[7];
memset(gameidbuffer6, 0, 7);
memcpy(gameidbuffer6, (char*)0x80000000, 6);
snprintf(fullpath, 200, "%s%s.dol", filepath, gameidbuffer6);
SDCard_Init();
USBDevice_Init();
file = fopen(fullpath, "rb");
if(file == NULL)
{
fclose(file);
SDCard_deInit();
USBDevice_deInit();
return false;
}
int filesize;
fseek(file, 0, SEEK_END);
filesize = ftell(file);
fseek(file, 0, SEEK_SET);
dol_buffer = malloc(filesize);
if (dol_buffer == NULL)
{
fclose(file);
SDCard_deInit();
USBDevice_deInit();
return false;
}
ret = fread( dol_buffer, 1, filesize, file);
if(ret != filesize)
{
free(dol_buffer);
fclose(file);
SDCard_deInit();
USBDevice_deInit();
return false;
}
fclose(file);
SDCard_deInit();
USBDevice_deInit();
*buffer = dol_buffer;
*dollen = filesize;
return true;
}
bool Remove_001_Protection(void *Address, int Size)
{
u8 SearchPattern[16] = { 0x40, 0x82, 0x00, 0x0C, 0x38, 0x60, 0x00, 0x01, 0x48, 0x00, 0x02, 0x44, 0x38, 0x61, 0x00, 0x18 };
u8 PatchData[16] = { 0x40, 0x82, 0x00, 0x04, 0x38, 0x60, 0x00, 0x01, 0x48, 0x00, 0x02, 0x44, 0x38, 0x61, 0x00, 0x18 };
void *Addr = Address;
void *Addr_end = Address+Size;
while(Addr <= Addr_end-sizeof(SearchPattern))
{
if(memcmp(Addr, SearchPattern, sizeof(SearchPattern))==0)
{
memcpy(Addr,PatchData,sizeof(PatchData));
return true;
}
Addr += 4;
}
return false;
}
typedef struct _dolheader {
u32 text_pos[7];
u32 data_pos[11];
u32 text_start[7];
u32 data_start[11];
u32 text_size[7];
u32 data_size[11];
u32 bss_start;
u32 bss_size;
u32 entry_point;
} dolheader;
u32 load_dol_image(void *dolstart) {
u32 i;
dolheader *dolfile;
if (dolstart) {
dolfile = (dolheader *) dolstart;
for (i = 0; i < 7; i++) {
if ((!dolfile->text_size[i]) || (dolfile->text_start[i] < 0x100)) continue;
VIDEO_WaitVSync();
ICInvalidateRange ((void *) dolfile->text_start[i],dolfile->text_size[i]);
memmove ((void *) dolfile->text_start[i],dolstart+dolfile->text_pos[i],dolfile->text_size[i]);
}
for(i = 0; i < 11; i++) {
if ((!dolfile->data_size[i]) || (dolfile->data_start[i] < 0x100)) continue;
VIDEO_WaitVSync();
memmove ((void *) dolfile->data_start[i],dolstart+dolfile->data_pos[i],dolfile->data_size[i]);
DCFlushRangeNoSync ((void *) dolfile->data_start[i],dolfile->data_size[i]);
}
/*
memset ((void *) dolfile->bss_start, 0, dolfile->bss_size);
DCFlushRange((void *) dolfile->bss_start, dolfile->bss_size);
*/
return dolfile->entry_point;
}
return 0;
}