90ebe78c8e
Always prevents losing AGB_FIRM saves, forces the last used options on a MCU reboot (can be overridden with A)
68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
/*
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* patches.c
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* by Reisyukaku
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* Copyright (c) 2015 All Rights Reserved
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*/
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#include "patches.h"
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#include "memory.h"
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/**************************************************
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* Patches
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**************************************************/
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/*
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* MPU
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*/
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u8 mpu[0x2C] = { //MPU shit
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0x03, 0x00, 0x36, 0x00, 0x00, 0x00, 0x10, 0x10, 0x01, 0x00, 0x00, 0x01, 0x03, 0x00, 0x36, 0x00,
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0x00, 0x00, 0x00, 0x20, 0x01, 0x01, 0x01, 0x01, 0x03, 0x06, 0x20, 0x00, 0x00, 0x00, 0x00, 0x08,
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0x01, 0x01, 0x01, 0x01, 0x03, 0x06, 0x1C, 0x00, 0x00, 0x00, 0x02, 0x08
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};
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u8 nandRedir[0x08] = {0x00, 0x4C, 0xA0, 0x47, 0xC0, 0xA5, 0x01, 0x08}; //Branch to emunand function
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/*
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* Sig checks
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*/
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u8 sigPat1[2] = {0x00, 0x20};
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u8 sigPat2[4] = {0x00, 0x20, 0x70, 0x47};
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u8 FIRMblock[4] = {0x00, 0x20, 0xC0, 0x46};
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u8 emuInstr[5] = {0xA5, 0x01, 0x08, 0x30, 0xA5};
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/**************************************************
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* Functions
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**************************************************/
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void getSignatures(void *pos, u32 size, u32 *off, u32 *off2){
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//Look for signature checks
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unsigned char pattern[] = {0xC0, 0x1C, 0x76, 0xE7};
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unsigned char pattern2[] = {0xB5, 0x22, 0x4D, 0x0C};
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*off = (u32)memsearch(pos, pattern, size, 4);
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*off2 = (u32)memsearch(pos, pattern2, size, 4) - 1;
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}
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void getReboot(void *pos, u32 size, u32 *off){
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//Look for FIRM reboot code
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unsigned char pattern[] = {0xDE, 0x1F, 0x8D, 0xE2};
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*off = (u32)memsearch(pos, pattern, size, 4) - 0x10;
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}
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void getfOpen(void *pos, u32 size, u32 *off){
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//Calculate fOpen
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u32 p9addr = *(u32*)(memsearch(pos, "ess9", size, 4) + 0xC);
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u32 p9off = (u32)(memsearch(pos, "code", size, 4) + 0x1FF);
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unsigned char pattern[] = {0xB0, 0x04, 0x98, 0x0D};
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*off = (u32)memsearch(pos, pattern, size, 4) - 2 - p9off + p9addr;
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}
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void getFIRMWrite(void *pos, u32 size, u32 *off){
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//Look for FIRM writing code
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void *firmwrite = memsearch(pos, "exe:", size, 4);
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unsigned char pattern[] = {0x00, 0x28, 0x01, 0xDA};
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*off = (u32)memsearch(firmwrite - 0x100, pattern, 0x100, 4);
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} |