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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
38 lines
1.1 KiB
C++
38 lines
1.1 KiB
C++
//===-- ARMWinEH.cpp - Windows on ARM EH Support Functions ------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/ARMWinEH.h"
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#include "llvm/Support/raw_ostream.h"
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namespace llvm {
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namespace ARM {
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namespace WinEH {
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std::pair<uint16_t, uint32_t> SavedRegisterMask(const RuntimeFunction &RF) {
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uint8_t NumRegisters = RF.Reg();
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uint8_t RegistersVFP = RF.R();
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uint8_t LinkRegister = RF.L();
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uint8_t ChainedFrame = RF.C();
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uint16_t GPRMask = (ChainedFrame << 11) | (LinkRegister << 14);
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uint32_t VFPMask = 0;
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if (RegistersVFP)
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VFPMask |= (((1 << ((NumRegisters + 1) % 8)) - 1) << 8);
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else
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GPRMask |= (((1 << (NumRegisters + 1)) - 1) << 4);
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if (PrologueFolding(RF))
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GPRMask |= (((1 << (NumRegisters + 1)) - 1) << (~RF.StackAdjust() & 0x3));
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return std::make_pair(GPRMask, VFPMask);
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}
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}
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}
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}
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