C++ (Cpp) vmRegs Examples

Example #1

File: vm-regs.cpp Project: escherlat/hhvm

VMRegAnchor::VMRegAnchor(ActRec* ar)
  : m_old(tl_regState)
{
  assert(tl_regState == VMRegState::DIRTY);
  tl_regState = VMRegState::CLEAN;

  auto prevAr = g_context->getOuterVMFrame(ar);
  const Func* prevF = prevAr->m_func;
  assert(!ar->resumed());
  auto& regs = vmRegs();
  regs.stack.top() = (TypedValue*)ar - ar->numArgs();
  assert(vmStack().isValidAddress((uintptr_t)vmsp()));
  regs.pc = prevF->unit()->at(prevF->base() + ar->m_soff);
  regs.fp = prevAr;
}

Example #2

File: vm-regs.cpp Project: 6api/hhvm

VMRegAnchor::VMRegAnchor(ActRec* ar)
  : m_old(tl_regState)
{
  // Some C++ entry points have an ActRec prepared from after a call
  // instruction. This syncs us to right after the call instruction.
  assert(tl_regState == VMRegState::DIRTY);
  m_old = VMRegState::DIRTY;
  tl_regState = VMRegState::CLEAN;

  auto prevAr = g_context->getOuterVMFrame(ar);
  const Func* prevF = prevAr->m_func;
  assert(!ar->resumed());
  auto& regs = vmRegs();
  regs.stack.top() = (TypedValue*)ar - ar->numArgs();
  assert(vmStack().isValidAddress((uintptr_t)vmsp()));
  regs.pc = prevF->unit()->at(prevF->base() + ar->m_soff);
  regs.fp = prevAr;
}