//===----------------------------------------------------------------------===//
#include "DwarfException.h"
-#include "llvm/Module.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Twine.h"
#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineModuleInfo.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/Target/Mangler.h"
-#include "llvm/DataLayout.h"
+#include "llvm/Support/Dwarf.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/FormattedStream.h"
+#include "llvm/Support/LEB128.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"
-#include "llvm/Support/Dwarf.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/FormattedStream.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/ADT/Twine.h"
using namespace llvm;
DwarfException::DwarfException(AsmPrinter *A)
return Count;
}
-/// PadLT - Order landing pads lexicographically by type id.
-bool DwarfException::PadLT(const LandingPadInfo *L, const LandingPadInfo *R) {
- const std::vector<int> &LIds = L->TypeIds, &RIds = R->TypeIds;
- unsigned LSize = LIds.size(), RSize = RIds.size();
- unsigned MinSize = LSize < RSize ? LSize : RSize;
-
- for (unsigned i = 0; i != MinSize; ++i)
- if (LIds[i] != RIds[i])
- return LIds[i] < RIds[i];
-
- return LSize < RSize;
-}
-
/// ComputeActionsTable - Compute the actions table and gather the first action
/// index for each landing pad site.
unsigned DwarfException::
for (std::vector<unsigned>::const_iterator
I = FilterIds.begin(), E = FilterIds.end(); I != E; ++I) {
FilterOffsets.push_back(Offset);
- Offset -= MCAsmInfo::getULEB128Size(*I);
+ Offset -= getULEB128Size(*I);
}
FirstActions.reserve(LandingPads.size());
int FirstAction = 0;
unsigned SizeActions = 0;
- const LandingPadInfo *PrevLPI = 0;
+ const LandingPadInfo *PrevLPI = nullptr;
for (SmallVectorImpl<const LandingPadInfo *>::const_iterator
I = LandingPads.begin(), E = LandingPads.end(); I != E; ++I) {
unsigned SizePrevIds = PrevLPI->TypeIds.size();
assert(Actions.size());
PrevAction = Actions.size() - 1;
- SizeAction =
- MCAsmInfo::getSLEB128Size(Actions[PrevAction].NextAction) +
- MCAsmInfo::getSLEB128Size(Actions[PrevAction].ValueForTypeID);
+ SizeAction = getSLEB128Size(Actions[PrevAction].NextAction) +
+ getSLEB128Size(Actions[PrevAction].ValueForTypeID);
for (unsigned j = NumShared; j != SizePrevIds; ++j) {
assert(PrevAction != (unsigned)-1 && "PrevAction is invalid!");
- SizeAction -=
- MCAsmInfo::getSLEB128Size(Actions[PrevAction].ValueForTypeID);
+ SizeAction -= getSLEB128Size(Actions[PrevAction].ValueForTypeID);
SizeAction += -Actions[PrevAction].NextAction;
PrevAction = Actions[PrevAction].Previous;
}
int TypeID = TypeIds[J];
assert(-1 - TypeID < (int)FilterOffsets.size() && "Unknown filter id!");
int ValueForTypeID = TypeID < 0 ? FilterOffsets[-1 - TypeID] : TypeID;
- unsigned SizeTypeID = MCAsmInfo::getSLEB128Size(ValueForTypeID);
+ unsigned SizeTypeID = getSLEB128Size(ValueForTypeID);
int NextAction = SizeAction ? -(SizeAction + SizeTypeID) : 0;
- SizeAction = SizeTypeID + MCAsmInfo::getSLEB128Size(NextAction);
+ SizeAction = SizeTypeID + getSLEB128Size(NextAction);
SizeSiteActions += SizeAction;
ActionEntry Action = { ValueForTypeID, NextAction, PrevAction };
if (!MO.isGlobal()) continue;
const Function *F = dyn_cast<Function>(MO.getGlobal());
- if (F == 0) continue;
+ if (!F) continue;
if (SawFunc) {
// Be conservative. If we have more than one function operand for this
const SmallVectorImpl<const LandingPadInfo *> &LandingPads,
const SmallVectorImpl<unsigned> &FirstActions) {
// The end label of the previous invoke or nounwind try-range.
- MCSymbol *LastLabel = 0;
+ MCSymbol *LastLabel = nullptr;
// Whether there is a potentially throwing instruction (currently this means
// an ordinary call) between the end of the previous try-range and now.
bool PreviousIsInvoke = false;
// Visit all instructions in order of address.
- for (MachineFunction::const_iterator I = Asm->MF->begin(), E = Asm->MF->end();
- I != E; ++I) {
- for (MachineBasicBlock::const_iterator MI = I->begin(), E = I->end();
- MI != E; ++MI) {
- if (!MI->isLabel()) {
- if (MI->isCall())
- SawPotentiallyThrowing |= !CallToNoUnwindFunction(MI);
+ for (const auto &MBB : *Asm->MF) {
+ for (const auto &MI : MBB) {
+ if (!MI.isEHLabel()) {
+ if (MI.isCall())
+ SawPotentiallyThrowing |= !CallToNoUnwindFunction(&MI);
continue;
}
// End of the previous try-range?
- MCSymbol *BeginLabel = MI->getOperand(0).getMCSymbol();
+ MCSymbol *BeginLabel = MI.getOperand(0).getMCSymbol();
if (BeginLabel == LastLabel)
SawPotentiallyThrowing = false;
// create a call-site entry with no landing pad for the region between the
// try-ranges.
if (SawPotentiallyThrowing && Asm->MAI->isExceptionHandlingDwarf()) {
- CallSiteEntry Site = { LastLabel, BeginLabel, 0, 0 };
+ CallSiteEntry Site = { LastLabel, BeginLabel, nullptr, 0 };
CallSites.push_back(Site);
PreviousIsInvoke = false;
}
// function may throw, create a call-site entry with no landing pad for the
// region following the try-range.
if (SawPotentiallyThrowing && Asm->MAI->isExceptionHandlingDwarf()) {
- CallSiteEntry Site = { LastLabel, 0, 0, 0 };
+ CallSiteEntry Site = { LastLabel, nullptr, nullptr, 0 };
CallSites.push_back(Site);
}
}
for (unsigned i = 0, N = PadInfos.size(); i != N; ++i)
LandingPads.push_back(&PadInfos[i]);
- std::sort(LandingPads.begin(), LandingPads.end(), PadLT);
+ // Order landing pads lexicographically by type id.
+ std::sort(LandingPads.begin(), LandingPads.end(),
+ [](const LandingPadInfo *L,
+ const LandingPadInfo *R) { return L->TypeIds < R->TypeIds; });
// Compute the actions table and gather the first action index for each
// landing pad site.
}
for (unsigned i = 0, e = CallSites.size(); i < e; ++i) {
- CallSiteTableLength += MCAsmInfo::getULEB128Size(CallSites[i].Action);
+ CallSiteTableLength += getULEB128Size(CallSites[i].Action);
if (IsSJLJ)
- CallSiteTableLength += MCAsmInfo::getULEB128Size(i);
+ CallSiteTableLength += getULEB128Size(i);
}
// Type infos.
// that we're omitting that bit.
TTypeEncoding = dwarf::DW_EH_PE_omit;
// dwarf::DW_EH_PE_absptr
- TypeFormatSize = Asm->getDataLayout().getPointerSize(0);
+ TypeFormatSize = Asm->getDataLayout().getPointerSize();
} else {
// Okay, we have actual filters or typeinfos to emit. As such, we need to
// pick a type encoding for them. We're about to emit a list of pointers to
// We chose another solution: don't output padding inside the table like GCC
// does, instead output it before the table.
unsigned SizeTypes = TypeInfos.size() * TypeFormatSize;
- unsigned CallSiteTableLengthSize =
- MCAsmInfo::getULEB128Size(CallSiteTableLength);
+ unsigned CallSiteTableLengthSize = getULEB128Size(CallSiteTableLength);
unsigned TTypeBaseOffset =
sizeof(int8_t) + // Call site format
CallSiteTableLengthSize + // Call site table length size
CallSiteTableLength + // Call site table length
SizeActions + // Actions size
SizeTypes;
- unsigned TTypeBaseOffsetSize = MCAsmInfo::getULEB128Size(TTypeBaseOffset);
+ unsigned TTypeBaseOffsetSize = getULEB128Size(TTypeBaseOffset);
unsigned TotalSize =
sizeof(int8_t) + // LPStart format
sizeof(int8_t) + // TType format
Asm->GetTempSymbol("eh_func_begin", Asm->getFunctionNumber());
MCSymbol *BeginLabel = S.BeginLabel;
- if (BeginLabel == 0)
+ if (!BeginLabel)
BeginLabel = EHFuncBeginSym;
MCSymbol *EndLabel = S.EndLabel;
- if (EndLabel == 0)
+ if (!EndLabel)
EndLabel = Asm->GetTempSymbol("eh_func_end", Asm->getFunctionNumber());
if (!S.PadLabel) {
if (VerboseAsm)
Asm->OutStreamer.AddComment(" has no landing pad");
- Asm->OutStreamer.EmitIntValue(0, 4/*size*/, 0/*addrspace*/);
+ Asm->OutStreamer.EmitIntValue(0, 4/*size*/);
} else {
if (VerboseAsm)
Asm->OutStreamer.AddComment(Twine(" jumps to ") +
Asm->EmitSLEB128(Action.NextAction);
}
+ EmitTypeInfos(TTypeEncoding);
+
+ Asm->EmitAlignment(2);
+}
+
+void DwarfException::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 <<");
const GlobalVariable *GV = *I;
if (VerboseAsm)
Asm->OutStreamer.AddComment("TypeInfo " + Twine(Entry--));
- if (GV)
- Asm->EmitReference(GV, TTypeEncoding);
- else
- Asm->OutStreamer.EmitIntValue(0,Asm->GetSizeOfEncodedValue(TTypeEncoding),
- 0);
+ Asm->EmitTTypeReference(GV, TTypeEncoding);
}
// Emit the Exception Specifications.
Asm->EmitULEB128(TypeID);
}
-
- Asm->EmitAlignment(2);
}
-/// EndModule - Emit all exception information that should come after the
+/// endModule - Emit all exception information that should come after the
/// content.
-void DwarfException::EndModule() {
+void DwarfException::endModule() {
llvm_unreachable("Should be implemented");
}
-/// BeginFunction - Gather pre-function exception information. Assumes it's
+/// beginFunction - Gather pre-function exception information. Assumes it's
/// being emitted immediately after the function entry point.
-void DwarfException::BeginFunction(const MachineFunction *MF) {
+void DwarfException::beginFunction(const MachineFunction *MF) {
llvm_unreachable("Should be implemented");
}
-/// EndFunction - Gather and emit post-function exception information.
-///
-void DwarfException::EndFunction() {
+/// endFunction - Gather and emit post-function exception information.
+void DwarfException::endFunction(const MachineFunction *) {
llvm_unreachable("Should be implemented");
}
projects / oota-llvm.git / blobdiff