mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-13 07:29:38 +00:00
0b8c9a80f2
into their new header subdirectory: include/llvm/IR. This matches the directory structure of lib, and begins to correct a long standing point of file layout clutter in LLVM. There are still more header files to move here, but I wanted to handle them in separate commits to make tracking what files make sense at each layer easier. The only really questionable files here are the target intrinsic tablegen files. But that's a battle I'd rather not fight today. I've updated both CMake and Makefile build systems (I think, and my tests think, but I may have missed something). I've also re-sorted the includes throughout the project. I'll be committing updates to Clang, DragonEgg, and Polly momentarily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171366 91177308-0d34-0410-b5e6-96231b3b80d8
116 lines
3.9 KiB
C++
116 lines
3.9 KiB
C++
//===-- CodeGen/AsmPrinter/Win64Exception.cpp - Dwarf Exception Impl ------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains support for writing Win64 exception info into asm files.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "DwarfException.h"
|
|
#include "llvm/ADT/SmallString.h"
|
|
#include "llvm/ADT/StringExtras.h"
|
|
#include "llvm/ADT/Twine.h"
|
|
#include "llvm/CodeGen/AsmPrinter.h"
|
|
#include "llvm/CodeGen/MachineFrameInfo.h"
|
|
#include "llvm/CodeGen/MachineFunction.h"
|
|
#include "llvm/CodeGen/MachineModuleInfo.h"
|
|
#include "llvm/IR/DataLayout.h"
|
|
#include "llvm/IR/Module.h"
|
|
#include "llvm/MC/MCAsmInfo.h"
|
|
#include "llvm/MC/MCContext.h"
|
|
#include "llvm/MC/MCExpr.h"
|
|
#include "llvm/MC/MCSection.h"
|
|
#include "llvm/MC/MCStreamer.h"
|
|
#include "llvm/MC/MCSymbol.h"
|
|
#include "llvm/Support/Dwarf.h"
|
|
#include "llvm/Support/ErrorHandling.h"
|
|
#include "llvm/Support/FormattedStream.h"
|
|
#include "llvm/Target/Mangler.h"
|
|
#include "llvm/Target/TargetFrameLowering.h"
|
|
#include "llvm/Target/TargetLoweringObjectFile.h"
|
|
#include "llvm/Target/TargetMachine.h"
|
|
#include "llvm/Target/TargetOptions.h"
|
|
#include "llvm/Target/TargetRegisterInfo.h"
|
|
using namespace llvm;
|
|
|
|
Win64Exception::Win64Exception(AsmPrinter *A)
|
|
: DwarfException(A),
|
|
shouldEmitPersonality(false), shouldEmitLSDA(false), shouldEmitMoves(false)
|
|
{}
|
|
|
|
Win64Exception::~Win64Exception() {}
|
|
|
|
/// EndModule - Emit all exception information that should come after the
|
|
/// content.
|
|
void Win64Exception::EndModule() {
|
|
}
|
|
|
|
/// BeginFunction - Gather pre-function exception information. Assumes it's
|
|
/// being emitted immediately after the function entry point.
|
|
void Win64Exception::BeginFunction(const MachineFunction *MF) {
|
|
shouldEmitMoves = shouldEmitPersonality = shouldEmitLSDA = false;
|
|
|
|
// If any landing pads survive, we need an EH table.
|
|
bool hasLandingPads = !MMI->getLandingPads().empty();
|
|
|
|
shouldEmitMoves = Asm->needsSEHMoves();
|
|
|
|
const TargetLoweringObjectFile &TLOF = Asm->getObjFileLowering();
|
|
unsigned PerEncoding = TLOF.getPersonalityEncoding();
|
|
const Function *Per = MMI->getPersonalities()[MMI->getPersonalityIndex()];
|
|
|
|
shouldEmitPersonality = hasLandingPads &&
|
|
PerEncoding != dwarf::DW_EH_PE_omit && Per;
|
|
|
|
unsigned LSDAEncoding = TLOF.getLSDAEncoding();
|
|
shouldEmitLSDA = shouldEmitPersonality &&
|
|
LSDAEncoding != dwarf::DW_EH_PE_omit;
|
|
|
|
if (!shouldEmitPersonality && !shouldEmitMoves)
|
|
return;
|
|
|
|
Asm->OutStreamer.EmitWin64EHStartProc(Asm->CurrentFnSym);
|
|
|
|
if (!shouldEmitPersonality)
|
|
return;
|
|
|
|
MCSymbol *GCCHandlerSym =
|
|
Asm->GetExternalSymbolSymbol("_GCC_specific_handler");
|
|
Asm->OutStreamer.EmitWin64EHHandler(GCCHandlerSym, true, true);
|
|
|
|
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("eh_func_begin",
|
|
Asm->getFunctionNumber()));
|
|
}
|
|
|
|
/// EndFunction - Gather and emit post-function exception information.
|
|
///
|
|
void Win64Exception::EndFunction() {
|
|
if (!shouldEmitPersonality && !shouldEmitMoves)
|
|
return;
|
|
|
|
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("eh_func_end",
|
|
Asm->getFunctionNumber()));
|
|
|
|
// Map all labels and get rid of any dead landing pads.
|
|
MMI->TidyLandingPads();
|
|
|
|
if (shouldEmitPersonality) {
|
|
const TargetLoweringObjectFile &TLOF = Asm->getObjFileLowering();
|
|
const Function *Per = MMI->getPersonalities()[MMI->getPersonalityIndex()];
|
|
const MCSymbol *Sym = TLOF.getCFIPersonalitySymbol(Per, Asm->Mang, MMI);
|
|
|
|
Asm->OutStreamer.PushSection();
|
|
Asm->OutStreamer.EmitWin64EHHandlerData();
|
|
Asm->OutStreamer.EmitValue(MCSymbolRefExpr::Create(Sym, Asm->OutContext),
|
|
4);
|
|
EmitExceptionTable();
|
|
Asm->OutStreamer.PopSection();
|
|
}
|
|
Asm->OutStreamer.EmitWin64EHEndProc();
|
|
}
|