frontend/3ds/3ds_utils.c

   1
   2 #include "3ds.h"
   3 #include "libkhax/khax.h"
   4
   5 static int ninjhax_version = 0;
   6
   7 typedef s32 (*ctr_callback_type)(void);
   8
   9 static void ctr_enable_all_svc_kernel(void)
  10 {
  11    __asm__ volatile("cpsid aif");
  12
  13    u32*  svc_access_control = *(*(u32***)0xFFFF9000 + 0x22) - 0x6;
  14
  15    svc_access_control[0]=0xFFFFFFFE;
  16    svc_access_control[1]=0xFFFFFFFF;
  17    svc_access_control[2]=0xFFFFFFFF;
  18    svc_access_control[3]=0x3FFFFFFF;
  19 }
  20
  21
  22 static void ctr_invalidate_ICache_kernel(void)
  23 {
  24    __asm__ volatile(
  25       "cpsid aif\n\t"
  26       "mov r0, #0\n\t"
  27       "mcr p15, 0, r0, c7, c5, 0\n\t");
  28 }
  29
  30 static void ctr_flush_DCache_kernel(void)
  31 {
  32    __asm__ volatile(
  33       "cpsid aif\n\t"
  34       "mov r0, #0\n\t"
  35       "mcr p15, 0, r0, c7, c10, 0\n\t");
  36
  37 }
  38
  39
  40 static void ctr_enable_all_svc(void)
  41 {
  42    svcBackdoor((ctr_callback_type)ctr_enable_all_svc_kernel);
  43 }
  44
  45 void ctr_invalidate_ICache(void)
  46 {
  47 //   __asm__ volatile("svc 0x2E\n\t");
  48    svcBackdoor((ctr_callback_type)ctr_invalidate_ICache_kernel);
  49
  50 }
  51
  52 void ctr_flush_DCache(void)
  53 {
  54 //   __asm__ volatile("svc 0x4B\n\t");
  55    svcBackdoor((ctr_callback_type)ctr_flush_DCache_kernel);
  56 }
  57
  58
  59 void ctr_flush_invalidate_cache(void)
  60 {
  61    ctr_flush_DCache();
  62    ctr_invalidate_ICache();
  63 }
  64
  65 int ctr_svchack_init(void)
  66 {
  67    Handle tempHandle;
  68    Result res = srvGetServiceHandle(&tempHandle, "am:u");
  69    if(res == 0)
  70    {
  71       /* CFW */
  72       svcCloseHandle(tempHandle);
  73       ninjhax_version = 0;
  74       ctr_enable_all_svc();
  75       return 1;
  76    }
  77    else if(hbInit() == 0)
  78    {
  79       /* ninjhax 1.0 */
  80       ninjhax_version = 1;
  81       hbExit();
  82       khaxInit();
  83       return 1;
  84    }
  85    else
  86    {
  87       /* ninjhax 2.0 */
  88
  89       return 0;
  90    }
  91 }
  92
  93
  94 void ctr_svchack_exit(void)
  95 {
  96    if (ninjhax_version == 1)
  97       khaxExit();
  98 }