//===----------------------------------------------------------------------===//
//
// Data structures for DWARF info entries.
-//
+//
//===----------------------------------------------------------------------===//
#include "DIE.h"
+#include "DwarfDebug.h"
#include "llvm/ADT/Twine.h"
#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/IR/DataLayout.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
-#include "llvm/Target/TargetData.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
///
void DIEAbbrev::Emit(AsmPrinter *AP) const {
// Emit its Dwarf tag type.
- // FIXME: Doing work even in non-asm-verbose runs.
AP->EmitULEB128(Tag, dwarf::TagString(Tag));
// Emit whether it has children DIEs.
- // FIXME: Doing work even in non-asm-verbose runs.
AP->EmitULEB128(ChildrenFlag, dwarf::ChildrenString(ChildrenFlag));
// For each attribute description.
const DIEAbbrevData &AttrData = Data[i];
// Emit attribute type.
- // FIXME: Doing work even in non-asm-verbose runs.
AP->EmitULEB128(AttrData.getAttribute(),
dwarf::AttributeString(AttrData.getAttribute()));
// Emit form type.
- // FIXME: Doing work even in non-asm-verbose runs.
AP->EmitULEB128(AttrData.getForm(),
dwarf::FormEncodingString(AttrData.getForm()));
}
delete Children[i];
}
-/// addSiblingOffset - Add a sibling offset field to the front of the DIE.
-///
-DIEValue *DIE::addSiblingOffset(BumpPtrAllocator &A) {
- DIEInteger *DI = new (A) DIEInteger(0);
- Values.insert(Values.begin(), DI);
- Abbrev.AddFirstAttribute(dwarf::DW_AT_sibling, dwarf::DW_FORM_ref4);
- return DI;
+/// Climb up the parent chain to get the compile unit DIE to which this DIE
+/// belongs.
+DIE *DIE::getCompileUnit() {
+ DIE *p = this;
+ while (p) {
+ if (p->getTag() == dwarf::DW_TAG_compile_unit)
+ return p;
+ p = p->getParent();
+ }
+ llvm_unreachable("We should not have orphaned DIEs.");
}
#ifndef NDEBUG
-void DIE::print(raw_ostream &O, unsigned IncIndent) {
- IndentCount += IncIndent;
+void DIE::print(raw_ostream &O, unsigned IndentCount) const {
const std::string Indent(IndentCount, ' ');
bool isBlock = Abbrev.getTag() == 0;
O << "Size: " << Size << "\n";
}
- const SmallVector<DIEAbbrevData, 8> &Data = Abbrev.getData();
+ const SmallVectorImpl<DIEAbbrevData> &Data = Abbrev.getData();
IndentCount += 2;
for (unsigned i = 0, N = Data.size(); i < N; ++i) {
IndentCount -= 2;
for (unsigned j = 0, M = Children.size(); j < M; ++j) {
- Children[j]->print(O, 4);
+ Children[j]->print(O, IndentCount+4);
}
if (!isBlock) O << "\n";
- IndentCount -= IncIndent;
}
void DIE::dump() {
}
#endif
+void DIEValue::anchor() { }
#ifndef NDEBUG
-void DIEValue::dump() {
+void DIEValue::dump() const {
print(dbgs());
}
#endif
void DIEInteger::EmitValue(AsmPrinter *Asm, unsigned Form) const {
unsigned Size = ~0U;
switch (Form) {
+ case dwarf::DW_FORM_flag_present:
+ // Emit something to keep the lines and comments in sync.
+ // FIXME: Is there a better way to do this?
+ if (Asm->OutStreamer.hasRawTextSupport())
+ Asm->OutStreamer.EmitRawText(StringRef(""));
+ return;
case dwarf::DW_FORM_flag: // Fall thru
case dwarf::DW_FORM_ref1: // Fall thru
case dwarf::DW_FORM_data1: Size = 1; break;
case dwarf::DW_FORM_ref2: // Fall thru
case dwarf::DW_FORM_data2: Size = 2; break;
+ case dwarf::DW_FORM_sec_offset: // Fall thru
case dwarf::DW_FORM_ref4: // Fall thru
case dwarf::DW_FORM_data4: Size = 4; break;
case dwarf::DW_FORM_ref8: // Fall thru
case dwarf::DW_FORM_data8: Size = 8; break;
+ case dwarf::DW_FORM_GNU_str_index: Asm->EmitULEB128(Integer); return;
+ case dwarf::DW_FORM_GNU_addr_index: Asm->EmitULEB128(Integer); return;
case dwarf::DW_FORM_udata: Asm->EmitULEB128(Integer); return;
case dwarf::DW_FORM_sdata: Asm->EmitSLEB128(Integer); return;
- case dwarf::DW_FORM_addr: Size = Asm->getTargetData().getPointerSize(); break;
+ case dwarf::DW_FORM_addr:
+ Size = Asm->getDataLayout().getPointerSize(); break;
default: llvm_unreachable("DIE Value form not supported yet");
}
- Asm->OutStreamer.EmitIntValue(Integer, Size, 0/*addrspace*/);
+ Asm->OutStreamer.EmitIntValue(Integer, Size);
}
/// SizeOf - Determine size of integer value in bytes.
///
unsigned DIEInteger::SizeOf(AsmPrinter *AP, unsigned Form) const {
switch (Form) {
+ case dwarf::DW_FORM_flag_present: return 0;
case dwarf::DW_FORM_flag: // Fall thru
case dwarf::DW_FORM_ref1: // Fall thru
case dwarf::DW_FORM_data1: return sizeof(int8_t);
case dwarf::DW_FORM_ref2: // Fall thru
case dwarf::DW_FORM_data2: return sizeof(int16_t);
+ case dwarf::DW_FORM_sec_offset: // Fall thru
case dwarf::DW_FORM_ref4: // Fall thru
case dwarf::DW_FORM_data4: return sizeof(int32_t);
case dwarf::DW_FORM_ref8: // Fall thru
case dwarf::DW_FORM_data8: return sizeof(int64_t);
+ case dwarf::DW_FORM_GNU_str_index: return MCAsmInfo::getULEB128Size(Integer);
+ case dwarf::DW_FORM_GNU_addr_index: return MCAsmInfo::getULEB128Size(Integer);
case dwarf::DW_FORM_udata: return MCAsmInfo::getULEB128Size(Integer);
case dwarf::DW_FORM_sdata: return MCAsmInfo::getSLEB128Size(Integer);
- case dwarf::DW_FORM_addr: return AP->getTargetData().getPointerSize();
- default: llvm_unreachable("DIE Value form not supported yet"); break;
+ case dwarf::DW_FORM_addr: return AP->getDataLayout().getPointerSize();
+ default: llvm_unreachable("DIE Value form not supported yet");
}
- return 0;
}
#ifndef NDEBUG
-void DIEInteger::print(raw_ostream &O) {
- O << "Int: " << (int64_t)Integer
- << format(" 0x%llx", (unsigned long long)Integer);
+void DIEInteger::print(raw_ostream &O) const {
+ O << "Int: " << (int64_t)Integer << " 0x";
+ O.write_hex(Integer);
}
#endif
//===----------------------------------------------------------------------===//
-// DIEString Implementation
+// DIEExpr Implementation
//===----------------------------------------------------------------------===//
-/// EmitValue - Emit string value.
+/// EmitValue - Emit expression value.
+///
+void DIEExpr::EmitValue(AsmPrinter *AP, unsigned Form) const {
+ AP->OutStreamer.EmitValue(Expr, SizeOf(AP, Form));
+}
+
+/// SizeOf - Determine size of expression value in bytes.
///
-void DIEString::EmitValue(AsmPrinter *AP, unsigned Form) const {
- AP->OutStreamer.EmitBytes(Str, /*addrspace*/0);
- // Emit nul terminator.
- AP->OutStreamer.EmitIntValue(0, 1, /*addrspace*/0);
+unsigned DIEExpr::SizeOf(AsmPrinter *AP, unsigned Form) const {
+ if (Form == dwarf::DW_FORM_data4) return 4;
+ if (Form == dwarf::DW_FORM_sec_offset) return 4;
+ if (Form == dwarf::DW_FORM_strp) return 4;
+ return AP->getDataLayout().getPointerSize();
}
#ifndef NDEBUG
-void DIEString::print(raw_ostream &O) {
- O << "Str: \"" << Str << "\"";
+void DIEExpr::print(raw_ostream &O) const {
+ O << "Expr: ";
+ Expr->print(O);
}
#endif
/// EmitValue - Emit label value.
///
void DIELabel::EmitValue(AsmPrinter *AP, unsigned Form) const {
- AP->OutStreamer.EmitSymbolValue(Label, SizeOf(AP, Form), 0/*AddrSpace*/);
+ AP->EmitLabelReference(Label, SizeOf(AP, Form));
}
/// SizeOf - Determine size of label value in bytes.
///
unsigned DIELabel::SizeOf(AsmPrinter *AP, unsigned Form) const {
if (Form == dwarf::DW_FORM_data4) return 4;
- return AP->getTargetData().getPointerSize();
+ if (Form == dwarf::DW_FORM_sec_offset) return 4;
+ if (Form == dwarf::DW_FORM_strp) return 4;
+ return AP->getDataLayout().getPointerSize();
}
#ifndef NDEBUG
-void DIELabel::print(raw_ostream &O) {
+void DIELabel::print(raw_ostream &O) const {
O << "Lbl: " << Label->getName();
}
#endif
///
unsigned DIEDelta::SizeOf(AsmPrinter *AP, unsigned Form) const {
if (Form == dwarf::DW_FORM_data4) return 4;
- return AP->getTargetData().getPointerSize();
+ if (Form == dwarf::DW_FORM_strp) return 4;
+ return AP->getDataLayout().getPointerSize();
}
#ifndef NDEBUG
-void DIEDelta::print(raw_ostream &O) {
+void DIEDelta::print(raw_ostream &O) const {
O << "Del: " << LabelHi->getName() << "-" << LabelLo->getName();
}
#endif
AP->EmitInt32(Entry->getOffset());
}
+unsigned DIEEntry::getRefAddrSize(AsmPrinter *AP) {
+ // DWARF4: References that use the attribute form DW_FORM_ref_addr are
+ // specified to be four bytes in the DWARF 32-bit format and eight bytes
+ // in the DWARF 64-bit format, while DWARF Version 2 specifies that such
+ // references have the same size as an address on the target system.
+ if (AP->getDwarfDebug()->getDwarfVersion() == 2)
+ return AP->getDataLayout().getPointerSize();
+ return sizeof(int32_t);
+}
+
#ifndef NDEBUG
-void DIEEntry::print(raw_ostream &O) {
+void DIEEntry::print(raw_ostream &O) const {
O << format("Die: 0x%lx", (long)(intptr_t)Entry);
}
#endif
///
unsigned DIEBlock::ComputeSize(AsmPrinter *AP) {
if (!Size) {
- const SmallVector<DIEAbbrevData, 8> &AbbrevData = Abbrev.getData();
+ const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
for (unsigned i = 0, N = Values.size(); i < N; ++i)
Size += Values[i]->SizeOf(AP, AbbrevData[i].getForm());
}
///
void DIEBlock::EmitValue(AsmPrinter *Asm, unsigned Form) const {
switch (Form) {
- default: assert(0 && "Improper form for block"); break;
+ default: llvm_unreachable("Improper form for block");
case dwarf::DW_FORM_block1: Asm->EmitInt8(Size); break;
case dwarf::DW_FORM_block2: Asm->EmitInt16(Size); break;
case dwarf::DW_FORM_block4: Asm->EmitInt32(Size); break;
case dwarf::DW_FORM_block: Asm->EmitULEB128(Size); break;
}
- const SmallVector<DIEAbbrevData, 8> &AbbrevData = Abbrev.getData();
+ const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
for (unsigned i = 0, N = Values.size(); i < N; ++i)
Values[i]->EmitValue(Asm, AbbrevData[i].getForm());
}
case dwarf::DW_FORM_block2: return Size + sizeof(int16_t);
case dwarf::DW_FORM_block4: return Size + sizeof(int32_t);
case dwarf::DW_FORM_block: return Size + MCAsmInfo::getULEB128Size(Size);
- default: llvm_unreachable("Improper form for block"); break;
+ default: llvm_unreachable("Improper form for block");
}
- return 0;
}
#ifndef NDEBUG
-void DIEBlock::print(raw_ostream &O) {
+void DIEBlock::print(raw_ostream &O) const {
O << "Blk: ";
DIE::print(O, 5);
}
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