A tool for deriving PKG packet encryption keys for ps4 written in c++
| 1 | // SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project |
| 2 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 3 | |
| 4 | #include "common/arch.h" |
| 5 | #include "common/assert.h" |
| 6 | #include "common/signal_context.h" |
| 7 | |
| 8 | #ifdef _WIN32 |
| 9 | #include <windows.h> |
| 10 | #else |
| 11 | #include <sys/ucontext.h> |
| 12 | #endif |
| 13 | |
| 14 | namespace Common { |
| 15 | |
| 16 | void* GetXmmPointer(void* ctx, u8 index) { |
| 17 | #if defined(_WIN32) |
| 18 | #define CASE(index) \ |
| 19 | case index: \ |
| 20 | return (void*)(&((EXCEPTION_POINTERS*)ctx)->ContextRecord->Xmm##index.Low) |
| 21 | #elif defined(__APPLE__) |
| 22 | #define CASE(index) \ |
| 23 | case index: \ |
| 24 | return (void*)(&((ucontext_t*)ctx)->uc_mcontext->__fs.__fpu_xmm##index); |
| 25 | #else |
| 26 | #define CASE(index) \ |
| 27 | case index: \ |
| 28 | return (void*)(&((ucontext_t*)ctx)->uc_mcontext.fpregs->_xmm[index].element[0]) |
| 29 | #endif |
| 30 | switch (index) { |
| 31 | CASE(0); |
| 32 | CASE(1); |
| 33 | CASE(2); |
| 34 | CASE(3); |
| 35 | CASE(4); |
| 36 | CASE(5); |
| 37 | CASE(6); |
| 38 | CASE(7); |
| 39 | CASE(8); |
| 40 | CASE(9); |
| 41 | CASE(10); |
| 42 | CASE(11); |
| 43 | CASE(12); |
| 44 | CASE(13); |
| 45 | CASE(14); |
| 46 | CASE(15); |
| 47 | default: { |
| 48 | UNREACHABLE_MSG("Invalid XMM register index: {}", index); |
| 49 | return nullptr; |
| 50 | } |
| 51 | } |
| 52 | #undef CASE |
| 53 | } |
| 54 | |
| 55 | void* GetRip(void* ctx) { |
| 56 | #if defined(_WIN32) |
| 57 | return (void*)((EXCEPTION_POINTERS*)ctx)->ContextRecord->Rip; |
| 58 | #elif defined(__APPLE__) |
| 59 | return (void*)((ucontext_t*)ctx)->uc_mcontext->__ss.__rip; |
| 60 | #else |
| 61 | return (void*)((ucontext_t*)ctx)->uc_mcontext.gregs[REG_RIP]; |
| 62 | #endif |
| 63 | } |
| 64 | |
| 65 | void IncrementRip(void* ctx, u64 length) { |
| 66 | #if defined(_WIN32) |
| 67 | ((EXCEPTION_POINTERS*)ctx)->ContextRecord->Rip += length; |
| 68 | #elif defined(__APPLE__) |
| 69 | ((ucontext_t*)ctx)->uc_mcontext->__ss.__rip += length; |
| 70 | #else |
| 71 | ((ucontext_t*)ctx)->uc_mcontext.gregs[REG_RIP] += length; |
| 72 | #endif |
| 73 | } |
| 74 | |
| 75 | bool IsWriteError(void* ctx) { |
| 76 | #if defined(_WIN32) |
| 77 | return ((EXCEPTION_POINTERS*)ctx)->ExceptionRecord->ExceptionInformation[0] == 1; |
| 78 | #elif defined(__APPLE__) |
| 79 | #if defined(ARCH_X86_64) |
| 80 | return ((ucontext_t*)ctx)->uc_mcontext->__es.__err & 0x2; |
| 81 | #elif defined(ARCH_ARM64) |
| 82 | return ((ucontext_t*)ctx)->uc_mcontext->__es.__esr & 0x40; |
| 83 | #endif |
| 84 | #else |
| 85 | #if defined(ARCH_X86_64) |
| 86 | return ((ucontext_t*)ctx)->uc_mcontext.gregs[REG_ERR] & 0x2; |
| 87 | #else |
| 88 | #error "Unsupported architecture" |
| 89 | #endif |
| 90 | #endif |
| 91 | } |
| 92 | } // namespace Common |