#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineLocation.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Target/Mangler.h"
-#include "llvm/Target/TargetData.h"
+#include "llvm/DataLayout.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"
/// CallToNoUnwindFunction - Return `true' if this is a call to a function
/// marked `nounwind'. Return `false' otherwise.
bool DwarfException::CallToNoUnwindFunction(const MachineInstr *MI) {
- assert(MI->getDesc().isCall() && "This should be a call instruction!");
+ assert(MI->isCall() && "This should be a call instruction!");
bool MarkedNoUnwind = false;
bool SawFunc = false;
for (MachineBasicBlock::const_iterator MI = I->begin(), E = I->end();
MI != E; ++MI) {
if (!MI->isLabel()) {
- if (MI->getDesc().isCall())
+ if (MI->isCall())
SawPotentiallyThrowing |= !CallToNoUnwindFunction(MI);
continue;
}
// that we're omitting that bit.
TTypeEncoding = dwarf::DW_EH_PE_omit;
// dwarf::DW_EH_PE_absptr
- TypeFormatSize = Asm->getTargetData().getPointerSize();
+ 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
}
// Begin the exception table.
- Asm->OutStreamer.SwitchSection(LSDASection);
+ // Sometimes we want not to emit the data into separate section (e.g. ARM
+ // EHABI). In this case LSDASection will be NULL.
+ if (LSDASection)
+ Asm->OutStreamer.SwitchSection(LSDASection);
Asm->EmitAlignment(2);
// Emit the LSDA.
SizeAlign = 0;
}
+ bool VerboseAsm = Asm->OutStreamer.isVerboseAsm();
+
// SjLj Exception handling
if (IsSJLJ) {
Asm->EmitEncodingByte(dwarf::DW_EH_PE_udata4, "Call site");
// Offset of the landing pad, counted in 16-byte bundles relative to the
// @LPStart address.
- Asm->EmitULEB128(idx, "Landing pad");
+ if (VerboseAsm) {
+ Asm->OutStreamer.AddComment(">> Call Site " + Twine(idx) + " <<");
+ Asm->OutStreamer.AddComment(" On exception at call site "+Twine(idx));
+ }
+ Asm->EmitULEB128(idx);
// Offset of the first associated action record, relative to the start of
// the action table. This value is biased by 1 (1 indicates the start of
// the action table), and 0 indicates that there are no actions.
- Asm->EmitULEB128(S.Action, "Action");
+ if (VerboseAsm) {
+ if (S.Action == 0)
+ Asm->OutStreamer.AddComment(" Action: cleanup");
+ else
+ Asm->OutStreamer.AddComment(" Action: " +
+ Twine((S.Action - 1) / 2 + 1));
+ }
+ Asm->EmitULEB128(S.Action);
}
} else {
// DWARF Exception handling
// Add extra padding if it wasn't added to the TType base offset.
Asm->EmitULEB128(CallSiteTableLength, "Call site table length", SizeAlign);
+ unsigned Entry = 0;
for (SmallVectorImpl<CallSiteEntry>::const_iterator
I = CallSites.begin(), E = CallSites.end(); I != E; ++I) {
const CallSiteEntry &S = *I;
if (EndLabel == 0)
EndLabel = Asm->GetTempSymbol("eh_func_end", Asm->getFunctionNumber());
+
// Offset of the call site relative to the previous call site, counted in
// number of 16-byte bundles. The first call site is counted relative to
// the start of the procedure fragment.
- Asm->OutStreamer.AddComment("Region start");
+ if (VerboseAsm)
+ Asm->OutStreamer.AddComment(">> Call Site " + Twine(++Entry) + " <<");
Asm->EmitLabelDifference(BeginLabel, EHFuncBeginSym, 4);
-
- Asm->OutStreamer.AddComment("Region length");
+ if (VerboseAsm)
+ Asm->OutStreamer.AddComment(Twine(" Call between ") +
+ BeginLabel->getName() + " and " +
+ EndLabel->getName());
Asm->EmitLabelDifference(EndLabel, BeginLabel, 4);
-
// Offset of the landing pad, counted in 16-byte bundles relative to the
// @LPStart address.
- Asm->OutStreamer.AddComment("Landing pad");
- if (!S.PadLabel)
+ if (!S.PadLabel) {
+ if (VerboseAsm)
+ Asm->OutStreamer.AddComment(" has no landing pad");
Asm->OutStreamer.EmitIntValue(0, 4/*size*/, 0/*addrspace*/);
- else
+ } else {
+ if (VerboseAsm)
+ Asm->OutStreamer.AddComment(Twine(" jumps to ") +
+ S.PadLabel->getName());
Asm->EmitLabelDifference(S.PadLabel, EHFuncBeginSym, 4);
+ }
// Offset of the first associated action record, relative to the start of
// the action table. This value is biased by 1 (1 indicates the start of
// the action table), and 0 indicates that there are no actions.
- Asm->EmitULEB128(S.Action, "Action");
+ if (VerboseAsm) {
+ if (S.Action == 0)
+ Asm->OutStreamer.AddComment(" On action: cleanup");
+ else
+ Asm->OutStreamer.AddComment(" On action: " +
+ Twine((S.Action - 1) / 2 + 1));
+ }
+ Asm->EmitULEB128(S.Action);
}
}
// Emit the Action Table.
- if (Actions.size() != 0) {
- Asm->OutStreamer.AddComment("-- Action Record Table --");
- Asm->OutStreamer.AddBlankLine();
- }
-
+ int Entry = 0;
for (SmallVectorImpl<ActionEntry>::const_iterator
I = Actions.begin(), E = Actions.end(); I != E; ++I) {
const ActionEntry &Action = *I;
- Asm->OutStreamer.AddComment("Action Record");
- Asm->OutStreamer.AddBlankLine();
+
+ if (VerboseAsm) {
+ // Emit comments that decode the action table.
+ Asm->OutStreamer.AddComment(">> Action Record " + Twine(++Entry) + " <<");
+ }
// Type Filter
//
// Used by the runtime to match the type of the thrown exception to the
// type of the catch clauses or the types in the exception specification.
- Asm->EmitSLEB128(Action.ValueForTypeID, " TypeInfo index");
+ if (VerboseAsm) {
+ if (Action.ValueForTypeID > 0)
+ Asm->OutStreamer.AddComment(" Catch TypeInfo " +
+ Twine(Action.ValueForTypeID));
+ else if (Action.ValueForTypeID < 0)
+ Asm->OutStreamer.AddComment(" Filter TypeInfo " +
+ Twine(Action.ValueForTypeID));
+ else
+ Asm->OutStreamer.AddComment(" Cleanup");
+ }
+ Asm->EmitSLEB128(Action.ValueForTypeID);
// Action Record
//
// Self-relative signed displacement in bytes of the next action record,
// or 0 if there is no next action record.
- Asm->EmitSLEB128(Action.NextAction, " Next action");
+ if (VerboseAsm) {
+ if (Action.NextAction == 0) {
+ Asm->OutStreamer.AddComment(" No further actions");
+ } else {
+ unsigned NextAction = Entry + (Action.NextAction + 1) / 2;
+ Asm->OutStreamer.AddComment(" Continue to action "+Twine(NextAction));
+ }
+ }
+ Asm->EmitSLEB128(Action.NextAction);
}
// Emit the Catch TypeInfos.
- if (!TypeInfos.empty()) {
- Asm->OutStreamer.AddComment("-- 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;
-
- Asm->OutStreamer.AddComment("TypeInfo");
+ if (VerboseAsm)
+ Asm->OutStreamer.AddComment("TypeInfo " + Twine(Entry--));
if (GV)
Asm->EmitReference(GV, TTypeEncoding);
else
}
// Emit the Exception Specifications.
- if (!FilterIds.empty()) {
- Asm->OutStreamer.AddComment("-- Filter IDs --");
+ 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;
- Asm->EmitULEB128(TypeID, TypeID != 0 ? "Exception specification" : 0);
+ if (VerboseAsm) {
+ --Entry;
+ if (TypeID != 0)
+ Asm->OutStreamer.AddComment("FilterInfo " + Twine(Entry));
+ }
+
+ Asm->EmitULEB128(TypeID);
}
Asm->EmitAlignment(2);
/// EndModule - Emit all exception information that should come after the
/// content.
void DwarfException::EndModule() {
- assert(0 && "Should be implemented");
+ llvm_unreachable("Should be implemented");
}
/// BeginFunction - Gather pre-function exception information. Assumes it's
/// being emitted immediately after the function entry point.
void DwarfException::BeginFunction(const MachineFunction *MF) {
- assert(0 && "Should be implemented");
+ llvm_unreachable("Should be implemented");
}
/// EndFunction - Gather and emit post-function exception information.
///
void DwarfException::EndFunction() {
- assert(0 && "Should be implemented");
+ llvm_unreachable("Should be implemented");
}
projects / oota-llvm.git / blobdiff