mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-05 13:09:10 +00:00
3fca788967
After all hard work to implement the EHABI and with the test-suite passing, it's time to turn it on by default and allow users to disable it as a work-around while we fix the eventual bugs that show up. This commit also remove the -arm-enable-ehabi-descriptors, since we want the tables to be printed every time the EHABI is turned on for non-Darwin ARM targets. Although MCJIT EHABI is not working yet (needs linking with the right libraries), this commit also fixes some relocations on MCJIT regarding the EH tables/lib calls, and update some tests to avoid using EH tables when none are needed. The EH tests in the test-suite that were previously disabled on ARM now pass with these changes, so a follow-up commit on the test-suite will re-enable them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200388 91177308-0d34-0410-b5e6-96231b3b80d8
135 lines
4.4 KiB
C++
135 lines
4.4 KiB
C++
//===-- CodeGen/AsmPrinter/ARMException.cpp - ARM EHABI 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 DWARF 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/Mangler.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/CommandLine.h"
|
|
#include "llvm/Support/Dwarf.h"
|
|
#include "llvm/Support/FormattedStream.h"
|
|
#include "llvm/Target/TargetFrameLowering.h"
|
|
#include "llvm/Target/TargetOptions.h"
|
|
#include "llvm/Target/TargetRegisterInfo.h"
|
|
using namespace llvm;
|
|
|
|
ARMException::ARMException(AsmPrinter *A)
|
|
: DwarfException(A) {}
|
|
|
|
ARMException::~ARMException() {}
|
|
|
|
ARMTargetStreamer &ARMException::getTargetStreamer() {
|
|
MCTargetStreamer &TS = *Asm->OutStreamer.getTargetStreamer();
|
|
return static_cast<ARMTargetStreamer &>(TS);
|
|
}
|
|
|
|
void ARMException::endModule() {
|
|
}
|
|
|
|
/// beginFunction - Gather pre-function exception information. Assumes it's
|
|
/// being emitted immediately after the function entry point.
|
|
void ARMException::beginFunction(const MachineFunction *MF) {
|
|
getTargetStreamer().emitFnStart();
|
|
if (Asm->MF->getFunction()->needsUnwindTableEntry())
|
|
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("eh_func_begin",
|
|
Asm->getFunctionNumber()));
|
|
}
|
|
|
|
/// endFunction - Gather and emit post-function exception information.
|
|
///
|
|
void ARMException::endFunction(const MachineFunction *) {
|
|
ARMTargetStreamer &ATS = getTargetStreamer();
|
|
if (!Asm->MF->getFunction()->needsUnwindTableEntry())
|
|
ATS.emitCantUnwind();
|
|
else {
|
|
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("eh_func_end",
|
|
Asm->getFunctionNumber()));
|
|
|
|
// Map all labels and get rid of any dead landing pads.
|
|
MMI->TidyLandingPads();
|
|
|
|
if (!MMI->getLandingPads().empty()) {
|
|
// Emit references to personality.
|
|
if (const Function * Personality =
|
|
MMI->getPersonalities()[MMI->getPersonalityIndex()]) {
|
|
MCSymbol *PerSym = Asm->getSymbol(Personality);
|
|
Asm->OutStreamer.EmitSymbolAttribute(PerSym, MCSA_Global);
|
|
ATS.emitPersonality(PerSym);
|
|
}
|
|
|
|
// Emit .handlerdata directive.
|
|
ATS.emitHandlerData();
|
|
|
|
// Emit actual exception table
|
|
EmitExceptionTable();
|
|
}
|
|
}
|
|
|
|
ATS.emitFnEnd();
|
|
}
|
|
|
|
void ARMException::EmitTypeInfos(unsigned TTypeEncoding) {
|
|
const std::vector<const GlobalVariable *> &TypeInfos = MMI->getTypeInfos();
|
|
const std::vector<unsigned> &FilterIds = MMI->getFilterIds();
|
|
|
|
bool VerboseAsm = Asm->OutStreamer.isVerboseAsm();
|
|
|
|
int Entry = 0;
|
|
// Emit the Catch TypeInfos.
|
|
if (VerboseAsm && !TypeInfos.empty()) {
|
|
Asm->OutStreamer.AddComment(">> Catch TypeInfos <<");
|
|
Asm->OutStreamer.AddBlankLine();
|
|
Entry = TypeInfos.size();
|
|
}
|
|
|
|
for (std::vector<const GlobalVariable *>::const_reverse_iterator
|
|
I = TypeInfos.rbegin(), E = TypeInfos.rend(); I != E; ++I) {
|
|
const GlobalVariable *GV = *I;
|
|
if (VerboseAsm)
|
|
Asm->OutStreamer.AddComment("TypeInfo " + Twine(Entry--));
|
|
Asm->EmitTTypeReference(GV, TTypeEncoding);
|
|
}
|
|
|
|
// Emit the Exception Specifications.
|
|
if (VerboseAsm && !FilterIds.empty()) {
|
|
Asm->OutStreamer.AddComment(">> Filter TypeInfos <<");
|
|
Asm->OutStreamer.AddBlankLine();
|
|
Entry = 0;
|
|
}
|
|
for (std::vector<unsigned>::const_iterator
|
|
I = FilterIds.begin(), E = FilterIds.end(); I < E; ++I) {
|
|
unsigned TypeID = *I;
|
|
if (VerboseAsm) {
|
|
--Entry;
|
|
if (TypeID != 0)
|
|
Asm->OutStreamer.AddComment("FilterInfo " + Twine(Entry));
|
|
}
|
|
|
|
Asm->EmitTTypeReference((TypeID == 0 ? 0 : TypeInfos[TypeID - 1]),
|
|
TTypeEncoding);
|
|
}
|
|
}
|