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Clean up 9.3+ service patching.

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This commit is contained in:
Steven Smith 2016-04-11 22:37:45 -07:00
parent e6cf9caf12
commit 1eac6c70dd
1 changed files with 16 additions and 26 deletions
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42
source/mch2t/mch2t.c
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@ -241,13 +241,15 @@ static void allocate_work(void) {
svcExitThread();
}
u32 kprocess_ptr = 0;
u32 kprocess_pid_offset = 0;
u32 old_pid = 0;
s32 kernel_patch_pid_zero() {
u32* pidPtr = (u32*) (*(u32*) kprocess_ptr + kprocess_pid_offset);
u32* pidPtr = NULL;
if(is_n3ds) {
pidPtr = (u32*) (*(u32*) 0xFFFF9004 + 0xBC);
} else {
pidPtr = (u32*) (*(u32*) 0xFFFF9004 + 0xB4);
}
old_pid = *pidPtr;
*pidPtr = 0;
@ -256,7 +258,12 @@ s32 kernel_patch_pid_zero() {
}
s32 kernel_patch_pid_reset() {
u32* pidPtr = (u32*) (*(u32*) kprocess_ptr + kprocess_pid_offset);
u32* pidPtr = NULL;
if(is_n3ds) {
pidPtr = (u32*) (*(u32*) 0xFFFF9004 + 0xBC);
} else {
pidPtr = (u32*) (*(u32*) 0xFFFF9004 + 0xB4);
}
*pidPtr = old_pid;
@ -665,27 +672,10 @@ Result mch2t(void) {
STEP_PRINT_VA(8, "free memory before exploit: %lld", start_free);
STEP_PRINT_VA(8, "free memory now: %lld", osGetMemRegionFree(MEMREGION_APPLICATION));
kprocess_ptr = 0xFFFF9004;
if(osGetKernelVersion() < 0x022C0600) {
kprocess_pid_offset = 0xAC;
} else {
bool n3ds = false;
APT_CheckNew3DS((u8*) &n3ds);
if(n3ds) {
kprocess_pid_offset = 0xBC;
} else {
kprocess_pid_offset = 0xB4;
}
}
if(osGetKernelVersion() > 0x022E0000) {
svcBackdoor(kernel_patch_pid_zero);
srvExit();
srvInit();
svcBackdoor(kernel_patch_pid_reset);
}
svcBackdoor(kernel_patch_pid_zero);
srvExit();
srvInit();
svcBackdoor(kernel_patch_pid_reset);
STEP_PRINT(9, "success!");
return 0;