Function SyncThreadContext

Source/Windows/ARM64EC/Module.cpp:619–631

} // namespace Exception

extern "C" void SyncThreadContext(CONTEXT* Context) {
  ProcessPendingCrossProcessEmulatorWork();
  auto* Thread = GetCPUArea().ThreadState();
  // All other EFlags bits are lost when converting to/from an ARM64EC context, so merge them in from the current JIT state.
  // This is advisable over dropping their values as thread suspend/resume uses this function, and that can happen at any point in guest code.
  static constexpr uint32_t ECValidEFlagsMask {(1U << FEXCore::X86State::RFLAG_OF_RAW_LOC) | (1U << FEXCore::X86State::RFLAG_CF_RAW_LOC) |
                                               (1U << FEXCore::X86State::RFLAG_ZF_RAW_LOC) | (1U << FEXCore::X86State::RFLAG_SF_RAW_LOC) |
                                               (1U << FEXCore::X86State::RFLAG_TF_RAW_LOC)};

  uint32_t StateEFlags = CTX->ReconstructCompactedEFLAGS(Thread, false, nullptr, 0);
  Context->EFlags = (Context->EFlags & ECValidEFlagsMask) | (StateEFlags & ~ECValidEFlagsMask);
  Exception::LoadStateFromECContext(Thread, *Context);
}

NTSTATUS ProcessInit() {
  InitSyscalls();