mirror of
https://github.com/wiidev/usbloadergx.git
synced 2025-07-26 21:37:32 +02:00
112 lines
2.6 KiB
C
112 lines
2.6 KiB
C
#include <stdio.h>
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#include <ogcsys.h>
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#include "apploader.h"
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#include "wdvd.h"
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#include "wpad.h"
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#include "alternatedol.h"
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#include "fstfile.h"
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#include "gecko.h"
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#include "patches/gamepatches.h"
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#include "patches/wip.h"
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#include "settings/SettingsEnums.h"
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/* Apploader function pointers */
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typedef int (*app_main)(void **dst, int *size, int *offset);
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typedef void (*app_init_cb)(const char *fmt, ...);
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typedef void (*app_init)(app_init_cb);
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typedef void *(*app_final)();
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typedef void (*app_entry)(app_init *init, app_main *main, app_final *final);
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/* Apploader pointers */
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static u8 *appldr = (u8 *) 0x81200000;
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/* Constants */
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#define APPLDR_OFFSET 0x2440
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/* Variables */
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static u32 buffer[0x20] ATTRIBUTE_ALIGN( 32 );
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s32 Apploader_Run(entry_point *entry, char * dolpath, u8 alternatedol, u32 alternatedoloffset)
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{
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app_entry appldr_entry = NULL;
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app_init appldr_init = NULL;
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app_main appldr_main = NULL;
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app_final appldr_final = NULL;
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void *dst = NULL;
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int len = 0;
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int offset = 0;
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u32 appldr_len;
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s32 ret;
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gprintf("\nApploader_Run() started\n");
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/* Read apploader header */
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ret = WDVD_Read(buffer, 0x20, APPLDR_OFFSET);
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if (ret < 0) return ret;
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/* Calculate apploader length */
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appldr_len = buffer[5] + buffer[6];
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/* Read apploader code */
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ret = WDVD_Read(appldr, appldr_len, APPLDR_OFFSET + 0x20);
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if (ret < 0) return ret;
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/* Flush memory */
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DCFlushRange(appldr, appldr_len);
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ICInvalidateRange(appldr, appldr_len);
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/* Set apploader entry function */
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appldr_entry = (app_entry) buffer[4];
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/* Call apploader entry */
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appldr_entry(&appldr_init, &appldr_main, &appldr_final);
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/* Initialize apploader */
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appldr_init(gprintf);
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while(appldr_main(&dst, &len, &offset))
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{
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/* Read data from DVD */
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WDVD_Read(dst, len, (u64) (offset << 2));
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RegisterDOL((u8 *) dst, len);
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DCFlushRange(dst, len);
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ICInvalidateRange(dst, len);
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}
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*entry = appldr_final();
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/** Load alternate dol if set **/
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if (alternatedol == ALT_DOL_FROM_SD_USB)
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{
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ClearDOLList();
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wip_reset_counter();
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void *dolbuffer = NULL;
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int dollen = 0;
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bool dolloaded = Load_Dol(&dolbuffer, &dollen, dolpath);
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if (dolloaded)
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*entry = (entry_point) load_dol_image(dolbuffer);
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if (dolbuffer) free(dolbuffer);
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}
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else if (alternatedol == ALT_DOL_FROM_GAME && alternatedoloffset != 0)
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{
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ClearDOLList();
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wip_reset_counter();
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FST_ENTRY *fst = (FST_ENTRY *) *(u32 *) 0x80000038;
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if (!fst)
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return -1;
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//! Check if it's inside the limits
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if(alternatedoloffset >= fst[0].filelen)
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return 0;
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*entry = (entry_point) Load_Dol_from_disc(fst[alternatedoloffset].fileoffset);
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}
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return 0;
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}
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