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1 | |
2 | #include "3ds_utils.h" |
3 | |
4 | typedef int (*ctr_callback_type)(void); |
5 | |
6 | int srvGetServiceHandle(unsigned int* out, const char* name); |
7 | int svcCloseHandle(unsigned int handle); |
8 | int svcBackdoor(ctr_callback_type); |
9 | |
10 | |
11 | static void ctr_enable_all_svc_kernel(void) |
12 | { |
13 | __asm__ volatile("cpsid aif"); |
14 | |
15 | unsigned int* svc_access_control = *(*(unsigned int***)0xFFFF9000 + 0x22) - 0x6; |
16 | |
17 | svc_access_control[0]=0xFFFFFFFE; |
18 | svc_access_control[1]=0xFFFFFFFF; |
19 | svc_access_control[2]=0xFFFFFFFF; |
20 | svc_access_control[3]=0x3FFFFFFF; |
21 | } |
22 | |
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23 | static void ctr_enable_all_svc(void) |
24 | { |
25 | svcBackdoor((ctr_callback_type)ctr_enable_all_svc_kernel); |
26 | } |
27 | |
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28 | static void ctr_clean_invalidate_kernel(void) |
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29 | { |
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30 | __asm__ volatile( |
31 | "mrs r1, cpsr\n" |
32 | "cpsid aif\n" // disable interrupts |
33 | "mov r0, #0\n" |
34 | "mcr p15, 0, r0, c7, c10, 0\n" // clean dcache |
35 | "mcr p15, 0, r0, c7, c10, 4\n" // DSB |
36 | "mcr p15, 0, r0, c7, c5, 0\n" // invalidate icache+BTAC |
37 | "msr cpsr_cx, r1\n" // restore interrupts |
38 | ::: "r0", "r1"); |
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39 | } |
40 | |
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41 | void ctr_flush_invalidate_cache(void) |
42 | { |
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43 | // __asm__ volatile("svc 0x2E\n\t"); |
44 | // __asm__ volatile("svc 0x4B\n\t"); |
45 | svcBackdoor((ctr_callback_type)ctr_clean_invalidate_kernel); |
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46 | } |
47 | |
48 | int ctr_svchack_init(void) |
49 | { |
50 | extern unsigned int __service_ptr; |
51 | |
52 | if(__service_ptr) |
53 | return 0; |
54 | |
55 | /* CFW */ |
56 | ctr_enable_all_svc(); |
57 | return 1; |
58 | } |
59 | |