mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-22 18:54:02 +01:00
39 lines
1.0 KiB
C++
39 lines
1.0 KiB
C++
//===-- 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);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|