LowLevel/Luma3DS-3GX
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Remove handling of kernel panics for SAFE_FIRM k9, fix it for LGY FIRMs.

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This commit is contained in:
TuxSH 2016-08-13 11:47:10 +02:00
parent f81c92e35b
commit 25811e2b52
3 changed files with 18 additions and 8 deletions
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5
source/firm.c
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@ -358,7 +358,7 @@ static inline void patchNativeFirm(u32 firmVersion, FirmwareSource nandType, u32
//Kernel9/Process9 debugging //Kernel9/Process9 debugging
patchExceptionHandlersInstall(arm9Section, section[2].size); patchExceptionHandlersInstall(arm9Section, section[2].size);
patchSvcBreak9(arm9Section, section[2].size, (u32)(section[2].address)); patchSvcBreak9(arm9Section, section[2].size, (u32)(section[2].address));
patchKernel9Panic(arm9Section, section[2].size); patchKernel9Panic(arm9Section, section[2].size, NATIVE_FIRM);
//Stub svcBreak11 with "bkpt 65535" //Stub svcBreak11 with "bkpt 65535"
patchSvcBreak11(arm11Section1, section[1].size); patchSvcBreak11(arm11Section1, section[1].size);
@ -393,7 +393,7 @@ static inline void patchLegacyFirm(FirmwareType firmType)
//Kernel9/Process9 debugging //Kernel9/Process9 debugging
patchExceptionHandlersInstall(arm9Section, section[3].size); patchExceptionHandlersInstall(arm9Section, section[3].size);
patchSvcBreak9(arm9Section, section[3].size, (u32)(section[3].address)); patchSvcBreak9(arm9Section, section[3].size, (u32)(section[3].address));
patchKernel9Panic(arm9Section, section[3].size); patchKernel9Panic(arm9Section, section[3].size, firmType);
} }
applyLegacyFirmPatches((u8 *)firm, firmType); applyLegacyFirmPatches((u8 *)firm, firmType);
@ -418,7 +418,6 @@ static inline void patchSafeFirm(void)
//Kernel9/Process9 debugging //Kernel9/Process9 debugging
patchExceptionHandlersInstall(arm9Section, section[2].size); patchExceptionHandlersInstall(arm9Section, section[2].size);
patchSvcBreak9(arm9Section, section[2].size, (u32)(section[2].address)); patchSvcBreak9(arm9Section, section[2].size, (u32)(section[2].address));
patchKernel9Panic(arm9Section, section[2].size);
} }
} }

19
source/patches.c
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@ -190,12 +190,23 @@ void patchSvcBreak11(u8 *pos, u32 size)
*addr = 0xE12FFF7F; *addr = 0xE12FFF7F;
} }
void patchKernel9Panic(u8 *pos, u32 size) void patchKernel9Panic(u8 *pos, u32 size, FirmwareType firmType)
{ {
const u8 pattern[] = {0x00, 0x20, 0xA0, 0xE3, 0x02, 0x30, 0xA0, 0xE1, 0x02, 0x10, 0xA0, 0xE1, 0x05, 0x00, 0xA0, 0xE3}; if(firmType == TWL_FIRM || firmType == AGB_FIRM)
{
u8 *off = pos + ((isN3DS) ? 0x723C : 0x69A8);
*(u16 *)off = 0x4778; //bx pc
*(u16 *)(off + 2) = 0x46C0; //nop
*(u32 *)(off + 4) = 0xE12FFF7E; //bkpt 65534
}
u32 *off = (u32 *)memsearch(pos, pattern, size, 16); else
*off = 0xE12FFF7E; {
const u8 pattern[] = {0x00, 0x20, 0xA0, 0xE3, 0x02, 0x30, 0xA0, 0xE1, 0x02, 0x10, 0xA0, 0xE1, 0x05, 0x00, 0xA0, 0xE3};
u32 *off = (u32 *)memsearch(pos, pattern, size, 16);
*off = 0xE12FFF7E;
}
} }
void patchKernel11Panic(u8 *pos, u32 size) void patchKernel11Panic(u8 *pos, u32 size)

2
source/patches.h
View File

@ -45,7 +45,7 @@ void patchFirmWriteSafe(u8 *pos, u32 size);
void patchExceptionHandlersInstall(u8 *pos, u32 size); void patchExceptionHandlersInstall(u8 *pos, u32 size);
void patchSvcBreak9(u8 *pos, u32 size, u32 k9addr); void patchSvcBreak9(u8 *pos, u32 size, u32 k9addr);
void patchSvcBreak11(u8 *pos, u32 size); void patchSvcBreak11(u8 *pos, u32 size);
void patchKernel9Panic(u8 *pos, u32 size); void patchKernel9Panic(u8 *pos, u32 size, FirmwareType firmType);
void patchKernel11Panic(u8 *pos, u32 size); void patchKernel11Panic(u8 *pos, u32 size);
void patchArm11SvcAccessChecks(u8 *pos, u32 size); void patchArm11SvcAccessChecks(u8 *pos, u32 size);
void patchK11ModuleChecks(u8 *pos, u32 size); void patchK11ModuleChecks(u8 *pos, u32 size);