diff options
| author | red031000 <rubenru09@aol.com> | 2020-05-03 01:42:55 +0100 |
|---|---|---|
| committer | red031000 <rubenru09@aol.com> | 2020-05-03 01:42:55 +0100 |
| commit | 2ee7030776461ee835dbbd44149f90ae79e7d4c5 (patch) | |
| tree | 328f97e2272d5c4252ef24943740350bb0a30d32 /arm9/lib/src/OS_entropy.c | |
| parent | bcb2fdcaff094ef3bdb951cdb87eff0739510ade (diff) | |
temp OS_entropy
Diffstat (limited to 'arm9/lib/src/OS_entropy.c')
| -rw-r--r-- | arm9/lib/src/OS_entropy.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arm9/lib/src/OS_entropy.c b/arm9/lib/src/OS_entropy.c new file mode 100644 index 00000000..bfc95882 --- /dev/null +++ b/arm9/lib/src/OS_entropy.c @@ -0,0 +1,28 @@ +// +// Created by red031000 on 2020-05-03. +// + +#include "function_target.h" +#include "consts.h" +#include "OS_entropy.h" + +u32 * const HW_REG_006 = (u32 *) 0x04000006; +u32 * const HW_REG_130 = (u32 *) 0x04000130; +u32 * const HW_REG_600 = (u32 *) 0x04000600; + +u32 * const OSi_TickCounter = (u32 *) 0x021D37B4; + +ARM_FUNC void OS_GetLowEntropyData(u32 * arr) +{ + OSSystemWork* work = OS_GetSystemWork(); + u16 x = *((u16 *)HW_REG_006); + u8 * nvramUserInfo = work->nvramUserInfo; + u8 r5 = nvramUserInfo[0x74]; + arr[0] = (OS_GetTickLo()<<0x10) | x ; + arr[1] = (OSi_TickCounter[0]<<0x10) ^ r5[2]; + u32 what = OSi_TickCounter[0]; + what = OSi_TickCounter[1]; + arr[2] = *((u32 *)r4) ^ what ^ *(u32 *)((u8 *)work+0x3c); + arr[2] ^= *HW_REG_600; + // ... +}
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