A tool for deriving PKG packet encryption keys for ps4 written in c++
| 1 | // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project |
| 2 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 3 | |
| 4 | #pragma once |
| 5 | |
| 6 | #include "common/arch.h" |
| 7 | |
| 8 | #ifdef _MSC_VER |
| 9 | #include <intrin.h> |
| 10 | #endif |
| 11 | |
| 12 | #include "common/shadpkg_types.h" |
| 13 | |
| 14 | namespace Common { |
| 15 | |
| 16 | #ifdef _MSC_VER |
| 17 | __forceinline static u64 FencedRDTSC() { |
| 18 | #ifdef ARCH_X86_64 |
| 19 | _mm_lfence(); |
| 20 | _ReadWriteBarrier(); |
| 21 | const u64 result = __rdtsc(); |
| 22 | _mm_lfence(); |
| 23 | _ReadWriteBarrier(); |
| 24 | return result; |
| 25 | #else |
| 26 | #error "Missing FencedRDTSC() implementation for target CPU architecture." |
| 27 | #endif |
| 28 | } |
| 29 | #else |
| 30 | static inline u64 FencedRDTSC() { |
| 31 | #ifdef ARCH_X86_64 |
| 32 | u64 eax; |
| 33 | u64 edx; |
| 34 | asm volatile("lfence\n\t" |
| 35 | "rdtsc\n\t" |
| 36 | "lfence\n\t" |
| 37 | : "=a"(eax), "=d"(edx)); |
| 38 | return (edx << 32) | eax; |
| 39 | #elif defined(ARCH_ARM64) |
| 40 | u64 ret; |
| 41 | asm volatile("isb\n\t" |
| 42 | "mrs %0, cntvct_el0\n\t" |
| 43 | "isb\n\t" |
| 44 | : "=r"(ret)::"memory"); |
| 45 | return ret; |
| 46 | #else |
| 47 | #error "Missing FencedRDTSC() implementation for target CPU architecture." |
| 48 | #endif |
| 49 | } |
| 50 | #endif |
| 51 | |
| 52 | u64 EstimateRDTSCFrequency(); |
| 53 | |
| 54 | } // namespace Common |
| 55 |