//===-- ARMWinEH.cpp - Windows on ARM EH Support Functions ------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// #include "llvm/Support/ARMWinEH.h" #include "llvm/Support/raw_ostream.h" namespace llvm { namespace ARM { namespace WinEH { std::pair<uint16_t, uint32_t> SavedRegisterMask(const RuntimeFunction &RF) { uint8_t NumRegisters = RF.Reg(); uint8_t RegistersVFP = RF.R(); uint8_t LinkRegister = RF.L(); uint8_t ChainedFrame = RF.C(); uint16_t GPRMask = (ChainedFrame << 11) | (LinkRegister << 14); uint32_t VFPMask = 0; if (RegistersVFP) VFPMask |= (((1 << ((NumRegisters + 1) % 8)) - 1) << 8); else GPRMask |= (((1 << (NumRegisters + 1)) - 1) << 4); if (PrologueFolding(RF)) GPRMask |= (((1 << (NumRegisters + 1)) - 1) << (~RF.StackAdjust() & 0x3)); return std::make_pair(GPRMask, VFPMask); } } } } |