LowLevel/Luma3DS-3GX
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Slightly improved the reboot patch, added emuNAND patch improvements from CakesFW, made the emuNAND patch completely version-independent

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Should work as-is with future firmwares!
This commit is contained in:
Aurora
2016-03-21 03:20:15 +01:00
parent 6b88953517
commit a437e533f5
6 changed files with 30 additions and 29 deletions
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8
source/emunand.c
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@@ -62,4 +62,12 @@ void getMPU(void *pos, u32 *off, u32 size){
const unsigned char pattern[] = {0x03, 0x00, 0x24, 0x00};
*off = (u32)memsearch(pos, pattern, size, 4);
}
void getEmuCode(void *pos, u32 *off, u32 size){
u8 *proc9 = (u8 *)memsearch(pos, "ess9", size, 4);
const unsigned char pattern[] = {0x00, 0xFF, 0xFF, 0xFF};
//Looking for the last spot before Process9
*off = (u32)memsearch(pos, pattern, size - (size - (u32)(proc9 - (u8 *)pos)), 4) + 0xD;
}

3
source/emunand.h
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@@ -13,4 +13,5 @@
void getEmunandSect(u32 *off, u32 *head, u32 emuNAND);
void getSDMMC(void *pos, u32 *off, u32 size);
void getEmuRW(void *pos, u32 size, u32 *readOff, u32 *writeOff);
void getMPU(void *pos, u32 *off, u32 size);
void getMPU(void *pos, u32 *off, u32 size);
void getEmuCode(void *pos, u32 *off, u32 size);

13
source/firm.c
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@@ -150,10 +150,7 @@ static u32 loadEmu(void){
const char path[] = "/aurei/emunand/emunand.bin";
u32 size = fileSize(path);
if(!size) return 0;
if(!console || !mode) nandRedir[5] = 0xA4;
//Find offset for emuNAND code from the offset in nandRedir
emuCodeOffset = *(u32 *)(nandRedir + 4) - (u32)section[2].address +
section[2].offset + (u32)firmLocation;
getEmuCode(firmLocation, &emuCodeOffset, firmSize);
fileRead((u8 *)emuCodeOffset, path, size);
//Find and patch emunand related offsets
@@ -171,11 +168,9 @@ static u32 loadEmu(void){
//No emuNAND detected
if(!*pos_header) return 0;
//Patch emuNAND code in memory for O3DS and 9.0 N3DS
if(!console || !mode){
void *pos_instr = memsearch((void *)emuCodeOffset, "\xA6\x01\x08\x30", size, 4);
memcpy(pos_instr, emuInstr, sizeof(emuInstr));
}
//Calculate offset for the hooks
*(u32 *)(nandRedir + 4) = emuCodeOffset - (u32)firmLocation -
section[2].offset + (u32)section[2].address;
//Add emunand hooks
memcpy((void *)emuRead, nandRedir, sizeof(nandRedir));

3
source/patches.c
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@@ -17,7 +17,8 @@ const u8 mpu[0x2C] = { //MPU shit
0x01, 0x01, 0x01, 0x01, 0x03, 0x06, 0x1C, 0x00, 0x00, 0x00, 0x02, 0x08
};
u8 nandRedir[0x08] = {0x00, 0x4C, 0xA0, 0x47, 0xC0, 0xA5, 0x01, 0x08}; //Branch to emunand function
//Branch to emunand function. To be filled in
u8 nandRedir[0x08] = {0x00, 0x4C, 0xA0, 0x47, 0x00, 0x00, 0x00, 0x00};
const u8 sigPat1[2] = {0x00, 0x20};
const u8 sigPat2[4] = {0x00, 0x20, 0x70, 0x47};