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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
70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
//===- MCWin64EH.h - Machine Code Win64 EH support --------------*- 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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//
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// This file contains declarations to support the Win64 Exception Handling
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// scheme in MC.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MCWIN64EH_H
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#define LLVM_MC_MCWIN64EH_H
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#include "llvm/MC/MCWinEH.h"
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#include "llvm/Support/Win64EH.h"
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namespace llvm {
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class MCStreamer;
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class MCSymbol;
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namespace Win64EH {
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struct Instruction {
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static WinEH::Instruction PushNonVol(MCSymbol *L, unsigned Reg) {
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return WinEH::Instruction(Win64EH::UOP_PushNonVol, L, Reg, -1);
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}
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static WinEH::Instruction Alloc(MCSymbol *L, unsigned Size) {
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return WinEH::Instruction(Size > 128 ? UOP_AllocLarge : UOP_AllocSmall, L,
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-1, Size);
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}
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static WinEH::Instruction PushMachFrame(MCSymbol *L, bool Code) {
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return WinEH::Instruction(UOP_PushMachFrame, L, -1, Code ? 1 : 0);
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}
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static WinEH::Instruction SaveNonVol(MCSymbol *L, unsigned Reg,
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unsigned Offset) {
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return WinEH::Instruction(Offset > 512 * 1024 - 8 ? UOP_SaveNonVolBig
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: UOP_SaveNonVol,
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L, Reg, Offset);
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}
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static WinEH::Instruction SaveXMM(MCSymbol *L, unsigned Reg,
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unsigned Offset) {
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return WinEH::Instruction(Offset > 512 * 1024 - 8 ? UOP_SaveXMM128Big
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: UOP_SaveXMM128,
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L, Reg, Offset);
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}
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static WinEH::Instruction SetFPReg(MCSymbol *L, unsigned Reg, unsigned Off) {
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return WinEH::Instruction(UOP_SetFPReg, L, Reg, Off);
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}
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};
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class UnwindEmitter : public WinEH::UnwindEmitter {
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public:
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void Emit(MCStreamer &Streamer) const override;
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void EmitUnwindInfo(MCStreamer &Streamer, WinEH::FrameInfo *FI) const override;
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};
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class ARM64UnwindEmitter : public WinEH::UnwindEmitter {
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public:
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void Emit(MCStreamer &Streamer) const override;
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void EmitUnwindInfo(MCStreamer &Streamer,
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WinEH::FrameInfo *FI) const override;
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};
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}
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} // end namespace llvm
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#endif
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