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Setting "Dev. options" to "None" now disables the exception handlers and related patches (again)

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Port the UNITINFO patch to TWL/AGB (although it doesn't make debugging information display on fatal errors) and SAFE firms.
On dev units this patch will set it to its "retail" value (i.e. 0)
This commit is contained in:
TuxSH 2016-08-23 20:39:42 +02:00
parent 7f672fb417
commit 2a84911d3b
5 changed files with 57 additions and 34 deletions
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2
injector/source/patcher.c
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@ -564,7 +564,7 @@ void patchCode(u64 progId, u8 *code, u32 size)
case 0x0004003000008A02LL: // ErrDisp
{
if(MULTICONFIG(2) == 1)
if(MULTICONFIG(2) == 0)
{
static const u8 unitinfoCheckPattern1[] = {
0x14, 0x00, 0xD0, 0xE5, 0xDB, 0x9A, 0x9F, 0xED

4
source/config.c
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@ -36,7 +36,7 @@ void configureCFW(const char *configPath)
const char *multiOptionsText[] = { "Screen brightness: 4( ) 3( ) 2( ) 1( )",
"New 3DS CPU: Off( ) Clock( ) L2( ) Clock+L2( )",
"Dev. features: None( ) ErrDisp( ) UNITINFO( )" };
"Dev. features: ErrDisp( ) UNITINFO( ) None( )" };
const char *singleOptionsText[] = { "( ) Autoboot SysNAND",
"( ) Use SysNAND FIRM if booting with R (A9LH)",
@ -55,7 +55,7 @@ void configureCFW(const char *configPath)
} multiOptions[] = {
{ .posXs = {21, 26, 31, 36} },
{ .posXs = {17, 26, 32, 44} },
{ .posXs = {20, 31, 43, 0} }
{ .posXs = {23, 35, 43, 0} }
};
//Calculate the amount of the various kinds of options and pre-select the first single one

24
source/firm.c
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@ -74,8 +74,11 @@ void main(void)
//Attempt to read the configuration file
needConfig = fileRead(&config, configPath) ? MODIFY_CONFIGURATION : CREATE_CONFIGURATION;
if(DEV_OPTIONS != 2)
{
detectAndProcessExceptionDumps();
installArm9Handlers();
}
//Determine if this is a firmlaunch boot
if(launchedFirmTIDLow[5] != 0)
@ -316,8 +319,10 @@ static inline void patchNativeFirm(u32 firmVersion, FirmwareSource nandType, u32
}
//Apply UNITINFO patch
if(DEV_OPTIONS == 2) patchUnitInfoValueSet(arm9Section, section[2].size);
if(DEV_OPTIONS == 1) patchUnitInfoValueSet(arm9Section, section[2].size, NATIVE_FIRM);
if(DEV_OPTIONS != 2)
{
//Install arm11 exception handlers
u32 stackAddress, codeSetOffset;
u32 *exceptionsPage = getInfoForArm11ExceptionHandlers(arm11Section1, section[1].size, &stackAddress, &codeSetOffset);
@ -332,12 +337,13 @@ static inline void patchNativeFirm(u32 firmVersion, FirmwareSource nandType, u32
patchSvcBreak11(arm11Section1, section[1].size);
//Stub kernel11panic with "bkpt 65534"
patchKernel11Panic(arm11Section1, section[1].size);
}
if(CONFIG(8))
{
patchArm11SvcAccessChecks(arm11Section1, section[1].size);
patchK11ModuleChecks(arm11Section1, section[1].size);
patchP9AccessChecks(arm9Section, section[2].size);
patchP9AccessChecks(process9Offset, process9Size);
}
implementSvcGetCFWInfo((u8 *)firm + section[1].offset, section[1].size);
@ -354,12 +360,20 @@ static inline void patchLegacyFirm(FirmwareType firmType)
firm->arm9Entry = (u8 *)0x801301C;
}
//Apply UNITINFO patch
if(DEV_OPTIONS == 1) patchUnitInfoValueSet(arm9Section, section[3].size, firmType);
if(DEV_OPTIONS != 2)
{
//Kernel9/Process9 debugging
patchExceptionHandlersInstall(arm9Section, section[3].size);
patchSvcBreak9(arm9Section, section[3].size, (u32)(section[3].address));
patchKernel9Panic(arm9Section, section[3].size, firmType);
}
applyLegacyFirmPatches((u8 *)firm, firmType);
fileWrite(arm9Section, "/luma/twl_arm9sec.bin", section[3].size);
}
static inline void patchSafeFirm(void)
@ -376,9 +390,15 @@ static inline void patchSafeFirm(void)
}
else patchFirmWriteSafe(arm9Section, section[2].size);
//Apply UNITINFO patch
if(DEV_OPTIONS == 1) patchUnitInfoValueSet(arm9Section, section[2].size, SAFE_FIRM);
if(DEV_OPTIONS != 2)
{
//Kernel9/Process9 debugging
patchExceptionHandlersInstall(arm9Section, section[2].size);
patchSvcBreak9(arm9Section, section[2].size, (u32)(section[2].address));
}
}
static inline void copySection0AndInjectSystemModules(FirmwareType firmType)

9
source/patches.c
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@ -295,13 +295,16 @@ void patchP9AccessChecks(u8 *pos, u32 size)
}
void patchUnitInfoValueSet(u8 *pos, u32 size)
void patchUnitInfoValueSet(u8 *pos, u32 size, FirmwareType firmType)
{
//Look for UNITINFO value being set
//Look for UNITINFO value being set during kernel sync
const u8 pattern[] = {0x01, 0x10, 0xA0, 0x13};
const u8 patternSafe[] = {0x00, 0x20, 0x91, 0xE2, 0x01, 0x20, 0xA0, 0x13};
bool safe = firmType == SAFE_FIRM && !isN3DS;
u8 *off = memsearch(pos, pattern, size, 4);
u8 *off = (!safe) ? memsearch(pos, pattern, size, 4) : (memsearch(pos, patternSafe, size, 8) + 4);
off[0] = (*(vu8 *)0x10010010 == 0) ? 1 : 0;
off[3] = 0xE3;
}

2
source/patches.h
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@ -50,7 +50,7 @@ void patchKernel11Panic(u8 *pos, u32 size);
void patchArm11SvcAccessChecks(u8 *pos, u32 size);
void patchK11ModuleChecks(u8 *pos, u32 size);
void patchP9AccessChecks(u8 *pos, u32 size);
void patchUnitInfoValueSet(u8 *pos, u32 size);
void patchUnitInfoValueSet(u8 *pos, u32 size, FirmwareType firmType);
void reimplementSvcBackdoor(u8 *pos, u32 size);
void implementSvcGetCFWInfo(u8 *pos, u32 size);
void applyLegacyFirmPatches(u8 *pos, FirmwareType firmType);