#include "llvm/ADT/SmallString.h"
using namespace llvm;
-DwarfPrinter::DwarfPrinter(raw_ostream &OS, AsmPrinter *A, const MCAsmInfo *T,
- const char *flavor)
+DwarfPrinter::DwarfPrinter(raw_ostream &OS, AsmPrinter *A, const MCAsmInfo *T)
: O(OS), Asm(A), MAI(T), TD(Asm->TM.getTargetData()),
RI(Asm->TM.getRegisterInfo()), M(NULL), MF(NULL), MMI(NULL),
- SubprogramCount(0), Flavor(flavor), SetCounter(1) {}
+ SubprogramCount(0) {}
/// getDWLabel - Return the MCSymbol corresponding to the assembler temporary
//assert(ID && "Should use getTempLabel if no ID");
if (ID == 0) return getTempLabel(Name);
- return Asm->OutContext.GetOrCreateSymbol(Twine(MAI->getPrivateGlobalPrefix())
- + Twine(Name) + Twine(ID));
+ return Asm->OutContext.GetOrCreateTemporarySymbol
+ (Twine(MAI->getPrivateGlobalPrefix()) + Twine(Name) + Twine(ID));
}
/// getTempLabel - Return the MCSymbol corresponding to the assembler temporary
/// label with the specified name.
MCSymbol *DwarfPrinter::getTempLabel(const char *Name) const {
- return Asm->OutContext.GetOrCreateSymbol(Twine(MAI->getPrivateGlobalPrefix())
- + Name);
+ return Asm->OutContext.GetOrCreateTemporarySymbol
+ (Twine(MAI->getPrivateGlobalPrefix()) + Name);
}
return 0;
}
-void DwarfPrinter::PrintRelDirective(bool Force32Bit, bool isInSection) const {
- if (isInSection && MAI->getDwarfSectionOffsetDirective())
- O << MAI->getDwarfSectionOffsetDirective();
- else if (Force32Bit || TD->getPointerSize() == sizeof(int32_t))
- O << MAI->getData32bitsDirective();
- else
- O << MAI->getData64bitsDirective();
-}
-
-void DwarfPrinter::PrintRelDirective(unsigned Encoding) const {
- unsigned Size = SizeOfEncodedValue(Encoding);
- assert((Size == 4 || Size == 8) && "Do not support other types or rels!");
-
- O << (Size == 4 ?
- MAI->getData32bitsDirective() : MAI->getData64bitsDirective());
-}
-
-/// EOL - Print a newline character to asm stream. If a comment is present
-/// then it will be printed first. Comments should not contain '\n'.
-void DwarfPrinter::EOL(const Twine &Comment) const {
- if (Asm->VerboseAsm && !Comment.isTriviallyEmpty()) {
- Asm->O.PadToColumn(MAI->getCommentColumn());
- Asm->O << Asm->MAI->getCommentString() << ' ' << Comment;
- }
- Asm->O << '\n';
-}
-
static const char *DecodeDWARFEncoding(unsigned Encoding) {
switch (Encoding) {
case dwarf::DW_EH_PE_absptr: return "absptr";
Asm->OutStreamer.AddComment(Desc);
if (MAI->hasLEB128()) {
+ // FIXME: MCize.
O << "\t.sleb128\t" << Value;
Asm->OutStreamer.AddBlankLine();
return;
Asm->OutStreamer.AddComment(Desc);
if (MAI->hasLEB128() && PadTo == 0) {
+ // FIXME: MCize.
O << "\t.uleb128\t" << Value;
Asm->OutStreamer.AddBlankLine();
return;
}
-/// PrintLabelName - Print label name in form used by Dwarf writer.
-///
-void DwarfPrinter::PrintLabelName(const MCSymbol *Label) const {
- // FIXME: REMOVE.
- O << Label->getName();
-}
-
-void DwarfPrinter::PrintLabelName(const char *Tag, unsigned Number) const {
- // FIXME: REMOVE.
- O << MAI->getPrivateGlobalPrefix() << Tag;
- if (Number) O << Number;
-}
-void DwarfPrinter::PrintLabelName(const char *Tag, unsigned Number,
- const char *Suffix) const {
- // FIXME: REMOVE.
- O << MAI->getPrivateGlobalPrefix() << Tag;
- if (Number) O << Number;
- O << Suffix;
-}
-
-/// EmitReference - Emit a reference to a label.
-///
-void DwarfPrinter::EmitReference(const MCSymbol *Sym, bool IsPCRelative,
- bool Force32Bit) const {
- PrintRelDirective(Force32Bit);
- O << *Sym;
- if (IsPCRelative) O << "-" << MAI->getPCSymbol();
-}
-
void DwarfPrinter::EmitReference(const MCSymbol *Sym, unsigned Encoding) const {
const TargetLoweringObjectFile &TLOF = Asm->getObjFileLowering();
- PrintRelDirective(Encoding);
- O << *TLOF.getSymbolForDwarfReference(Sym, Asm->MMI, Encoding);;
+ const MCExpr *Exp = TLOF.getExprForDwarfReference(Sym, Asm->Mang,
+ Asm->MMI, Encoding,
+ Asm->OutStreamer);
+ Asm->OutStreamer.EmitValue(Exp, SizeOfEncodedValue(Encoding), /*addrspace*/0);
}
-void DwarfPrinter::EmitReference(const GlobalValue *GV, unsigned Encoding)const {
+void DwarfPrinter::EmitReference(const GlobalValue *GV, unsigned Encoding)const{
const TargetLoweringObjectFile &TLOF = Asm->getObjFileLowering();
- PrintRelDirective(Encoding);
- O << *TLOF.getSymbolForDwarfGlobalReference(GV, Asm->Mang,
- Asm->MMI, Encoding);
+ const MCExpr *Exp =
+ TLOF.getExprForDwarfGlobalReference(GV, Asm->Mang, Asm->MMI, Encoding,
+ Asm->OutStreamer);
+ Asm->OutStreamer.EmitValue(Exp, SizeOfEncodedValue(Encoding), /*addrspace*/0);
}
/// EmitDifference - Emit the difference between two labels. If this assembler
/// supports .set, we emit a .set of a temporary and then use it in the .word.
void DwarfPrinter::EmitDifference(const MCSymbol *TagHi, const MCSymbol *TagLo,
bool IsSmall) {
- if (MAI->hasSetDirective()) {
- // FIXME: switch to OutStreamer.EmitAssignment.
- O << "\t.set\t";
- PrintLabelName("set", SetCounter, Flavor);
- O << ",";
- PrintLabelName(TagHi);
- O << "-";
- PrintLabelName(TagLo);
- O << "\n";
-
- PrintRelDirective(IsSmall);
- PrintLabelName("set", SetCounter, Flavor);
- ++SetCounter;
- } else {
- PrintRelDirective(IsSmall);
- PrintLabelName(TagHi);
- O << "-";
- PrintLabelName(TagLo);
- }
-}
-
-/// EmitDifference - Emit the difference between two labels. If this assembler
-/// supports .set, we emit a .set of a temporary and then use it in the .word.
-void DwarfPrinter::EmitDifference(const char *TagHi, unsigned NumberHi,
- const char *TagLo, unsigned NumberLo,
- bool IsSmall) {
- if (MAI->hasSetDirective()) {
- // FIXME: switch to OutStreamer.EmitAssignment.
- O << "\t.set\t";
- PrintLabelName("set", SetCounter, Flavor);
- O << ",";
- PrintLabelName(TagHi, NumberHi);
- O << "-";
- PrintLabelName(TagLo, NumberLo);
- O << "\n";
-
- PrintRelDirective(IsSmall);
- PrintLabelName("set", SetCounter, Flavor);
- ++SetCounter;
- } else {
- PrintRelDirective(IsSmall);
- PrintLabelName(TagHi, NumberHi);
- O << "-";
- PrintLabelName(TagLo, NumberLo);
- }
+ unsigned Size = IsSmall ? 4 : TD->getPointerSize();
+ Asm->EmitLabelDifference(TagHi, TagLo, Size);
}
void DwarfPrinter::EmitSectionOffset(const MCSymbol *Label,
const MCSymbol *Section,
- bool IsSmall, bool isEH,
- bool useSet) {
- bool printAbsolute = false;
+ bool IsSmall, bool isEH) {
+ bool isAbsolute;
if (isEH)
- printAbsolute = MAI->isAbsoluteEHSectionOffsets();
+ isAbsolute = MAI->isAbsoluteEHSectionOffsets();
else
- printAbsolute = MAI->isAbsoluteDebugSectionOffsets();
-
- if (MAI->hasSetDirective() && useSet) {
- // FIXME: switch to OutStreamer.EmitAssignment.
- O << "\t.set\t";
- PrintLabelName("set", SetCounter, Flavor);
- O << ",";
- PrintLabelName(Label);
-
- if (!printAbsolute) {
- O << "-";
- PrintLabelName(Section);
- }
+ isAbsolute = MAI->isAbsoluteDebugSectionOffsets();
- O << "\n";
- PrintRelDirective(IsSmall);
- PrintLabelName("set", SetCounter, Flavor);
- ++SetCounter;
+ if (!isAbsolute)
+ return EmitDifference(Label, Section, IsSmall);
+
+ // On COFF targets, we have to emit the weird .secrel32 directive.
+ if (const char *SecOffDir = MAI->getDwarfSectionOffsetDirective()) {
+ // FIXME: MCize.
+ Asm->O << SecOffDir << Label->getName();
+ Asm->OutStreamer.AddBlankLine();
} else {
- PrintRelDirective(IsSmall, true);
- PrintLabelName(Label);
-
- if (!printAbsolute) {
- O << "-";
- PrintLabelName(Section);
- }
+ unsigned Size = IsSmall ? 4 : TD->getPointerSize();
+ Asm->OutStreamer.EmitSymbolValue(Label, Size, 0/*AddrSpace*/);
}
}
/// EmitFrameMoves - Emit frame instructions to describe the layout of the
/// frame.
-void DwarfPrinter::EmitFrameMoves(const char *BaseLabel, unsigned BaseLabelID,
+void DwarfPrinter::EmitFrameMoves(MCSymbol *BaseLabel,
const std::vector<MachineMove> &Moves,
bool isEH) {
- int stackGrowth =
- Asm->TM.getFrameInfo()->getStackGrowthDirection() ==
- TargetFrameInfo::StackGrowsUp ?
- TD->getPointerSize() : -TD->getPointerSize();
- bool IsLocal = BaseLabel && strcmp(BaseLabel, "label") == 0;
-
+ int stackGrowth = TD->getPointerSize();
+ if (Asm->TM.getFrameInfo()->getStackGrowthDirection() !=
+ TargetFrameInfo::StackGrowsUp)
+ stackGrowth *= -1;
+
for (unsigned i = 0, N = Moves.size(); i < N; ++i) {
const MachineMove &Move = Moves[i];
unsigned LabelID = Move.getLabelID();
- if (LabelID) {
- LabelID = MMI->MappedLabel(LabelID);
-
- // Throw out move if the label is invalid.
- if (!LabelID) continue;
- }
+ // Throw out move if the label is invalid.
+ if (LabelID && MMI->isLabelDeleted(LabelID))
+ continue;
const MachineLocation &Dst = Move.getDestination();
const MachineLocation &Src = Move.getSource();
// Advance row if new location.
- if (BaseLabel && LabelID && (BaseLabelID != LabelID || !IsLocal)) {
- EmitCFAByte(dwarf::DW_CFA_advance_loc4);
- EmitDifference("label", LabelID, BaseLabel, BaseLabelID, true);
- Asm->O << '\n';
-
- BaseLabelID = LabelID;
- BaseLabel = "label";
- IsLocal = true;
+ if (BaseLabel && LabelID) {
+ MCSymbol *ThisSym = getDWLabel("label", LabelID);
+ if (ThisSym != BaseLabel) {
+ EmitCFAByte(dwarf::DW_CFA_advance_loc4);
+ EmitDifference(ThisSym, BaseLabel, true);
+ BaseLabel = ThisSym;
+ }
}
// If advancing cfa.
projects / oota-llvm.git / blobdiff