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https://github.com/c64scene-ar/llvm-6502.git
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7cc1de1090
This changes Win64EHEmitter into a utility WinEH UnwindEmitter that can be shared across multiple architectures and a target specific bit which is overridden (Win64::UnwindEmitter). This enables sharing the section selection code across X86 and the intended use in ARM for emitting unwind information for Windows on ARM. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215050 91177308-0d34-0410-b5e6-96231b3b80d8
64 lines
2.2 KiB
C++
64 lines
2.2 KiB
C++
//===- MCWin64EH.h - Machine Code Win64 EH support --------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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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#include <vector>
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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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}
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} // end namespace llvm
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#endif
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