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Diffstat (limited to 'lib/CodeGen/AsmPrinter/DIE.cpp')
-rw-r--r--lib/CodeGen/AsmPrinter/DIE.cpp186
1 files changed, 152 insertions, 34 deletions
diff --git a/lib/CodeGen/AsmPrinter/DIE.cpp b/lib/CodeGen/AsmPrinter/DIE.cpp
index 69444285f4ec..c3dcd9c8c19d 100644
--- a/lib/CodeGen/AsmPrinter/DIE.cpp
+++ b/lib/CodeGen/AsmPrinter/DIE.cpp
@@ -13,17 +13,18 @@
#include "DIE.h"
#include "DwarfDebug.h"
+#include "DwarfUnit.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/Support/Allocator.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/FormattedStream.h"
+#include "llvm/Support/LEB128.h"
#include "llvm/Support/MD5.h"
using namespace llvm;
@@ -48,7 +49,7 @@ void DIEAbbrevData::Profile(FoldingSetNodeID &ID) const {
///
void DIEAbbrev::Profile(FoldingSetNodeID &ID) const {
ID.AddInteger(unsigned(Tag));
- ID.AddInteger(ChildrenFlag);
+ ID.AddInteger(unsigned(Children));
// For each attribute description.
for (unsigned i = 0, N = Data.size(); i < N; ++i)
@@ -62,7 +63,7 @@ void DIEAbbrev::Emit(AsmPrinter *AP) const {
AP->EmitULEB128(Tag, dwarf::TagString(Tag));
// Emit whether it has children DIEs.
- AP->EmitULEB128(ChildrenFlag, dwarf::ChildrenString(ChildrenFlag));
+ AP->EmitULEB128((unsigned)Children, dwarf::ChildrenString(Children));
// For each attribute description.
for (unsigned i = 0, N = Data.size(); i < N; ++i) {
@@ -89,7 +90,7 @@ void DIEAbbrev::print(raw_ostream &O) {
<< " "
<< dwarf::TagString(Tag)
<< " "
- << dwarf::ChildrenString(ChildrenFlag)
+ << dwarf::ChildrenString(Children)
<< '\n';
for (unsigned i = 0, N = Data.size(); i < N; ++i) {
@@ -103,36 +104,28 @@ void DIEAbbrev::print(raw_ostream &O) {
void DIEAbbrev::dump() { print(dbgs()); }
#endif
-//===----------------------------------------------------------------------===//
-// DIE Implementation
-//===----------------------------------------------------------------------===//
-
-DIE::~DIE() {
- for (unsigned i = 0, N = Children.size(); i < N; ++i)
- delete Children[i];
-}
-
-/// Climb up the parent chain to get the compile unit DIE to which this DIE
+/// Climb up the parent chain to get the unit DIE to which this DIE
/// belongs.
-const DIE *DIE::getCompileUnit() const {
- const DIE *Cu = getCompileUnitOrNull();
+const DIE *DIE::getUnit() const {
+ const DIE *Cu = getUnitOrNull();
assert(Cu && "We should not have orphaned DIEs.");
return Cu;
}
-/// Climb up the parent chain to get the compile unit DIE this DIE belongs
+/// Climb up the parent chain to get the unit DIE this DIE belongs
/// to. Return NULL if DIE is not added to an owner yet.
-const DIE *DIE::getCompileUnitOrNull() const {
+const DIE *DIE::getUnitOrNull() const {
const DIE *p = this;
while (p) {
- if (p->getTag() == dwarf::DW_TAG_compile_unit)
+ if (p->getTag() == dwarf::DW_TAG_compile_unit ||
+ p->getTag() == dwarf::DW_TAG_type_unit)
return p;
p = p->getParent();
}
- return NULL;
+ return nullptr;
}
-DIEValue *DIE::findAttribute(uint16_t Attribute) {
+DIEValue *DIE::findAttribute(dwarf::Attribute Attribute) const {
const SmallVectorImpl<DIEValue *> &Values = getValues();
const DIEAbbrev &Abbrevs = getAbbrev();
@@ -141,7 +134,7 @@ DIEValue *DIE::findAttribute(uint16_t Attribute) {
for (size_t i = 0; i < Values.size(); ++i)
if (Abbrevs.getData()[i].getAttribute() == Attribute)
return Values[i];
- return NULL;
+ return nullptr;
}
#ifndef NDEBUG
@@ -159,7 +152,7 @@ void DIE::print(raw_ostream &O, unsigned IndentCount) const {
O << Indent
<< dwarf::TagString(Abbrev.getTag())
<< " "
- << dwarf::ChildrenString(Abbrev.getChildrenFlag()) << "\n";
+ << dwarf::ChildrenString(Abbrev.hasChildren()) << "\n";
} else {
O << "Size: " << Size << "\n";
}
@@ -215,8 +208,7 @@ void DIEInteger::EmitValue(AsmPrinter *Asm, dwarf::Form Form) const {
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("");
+ Asm->OutStreamer.AddBlankLine();
return;
case dwarf::DW_FORM_flag: // Fall thru
case dwarf::DW_FORM_ref1: // Fall thru
@@ -227,6 +219,7 @@ void DIEInteger::EmitValue(AsmPrinter *Asm, dwarf::Form Form) const {
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_ref_sig8: // 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;
@@ -253,11 +246,12 @@ unsigned DIEInteger::SizeOf(AsmPrinter *AP, dwarf::Form Form) const {
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_ref_sig8: // 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_GNU_str_index: return getULEB128Size(Integer);
+ case dwarf::DW_FORM_GNU_addr_index: return getULEB128Size(Integer);
+ case dwarf::DW_FORM_udata: return getULEB128Size(Integer);
+ case dwarf::DW_FORM_sdata: return getSLEB128Size(Integer);
case dwarf::DW_FORM_addr: return AP->getDataLayout().getPointerSize();
default: llvm_unreachable("DIE Value form not supported yet");
}
@@ -338,6 +332,7 @@ void DIEDelta::EmitValue(AsmPrinter *AP, dwarf::Form Form) const {
///
unsigned DIEDelta::SizeOf(AsmPrinter *AP, dwarf::Form 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();
}
@@ -378,7 +373,26 @@ void DIEString::print(raw_ostream &O) const {
/// EmitValue - Emit debug information entry offset.
///
void DIEEntry::EmitValue(AsmPrinter *AP, dwarf::Form Form) const {
- AP->EmitInt32(Entry->getOffset());
+
+ if (Form == dwarf::DW_FORM_ref_addr) {
+ const DwarfDebug *DD = AP->getDwarfDebug();
+ unsigned Addr = Entry.getOffset();
+ assert(!DD->useSplitDwarf() && "TODO: dwo files can't have relocations.");
+ // For DW_FORM_ref_addr, output the offset from beginning of debug info
+ // section. Entry->getOffset() returns the offset from start of the
+ // compile unit.
+ DwarfCompileUnit *CU = DD->lookupUnit(Entry.getUnit());
+ assert(CU && "CUDie should belong to a CU.");
+ Addr += CU->getDebugInfoOffset();
+ if (AP->MAI->doesDwarfUseRelocationsAcrossSections())
+ AP->EmitLabelPlusOffset(CU->getSectionSym(), Addr,
+ DIEEntry::getRefAddrSize(AP));
+ else
+ AP->EmitLabelOffsetDifference(CU->getSectionSym(), Addr,
+ CU->getSectionSym(),
+ DIEEntry::getRefAddrSize(AP));
+ } else
+ AP->EmitInt32(Entry.getOffset());
}
unsigned DIEEntry::getRefAddrSize(AsmPrinter *AP) {
@@ -386,14 +400,87 @@ unsigned DIEEntry::getRefAddrSize(AsmPrinter *AP) {
// 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)
+ const DwarfDebug *DD = AP->getDwarfDebug();
+ assert(DD && "Expected Dwarf Debug info to be available");
+ if (DD->getDwarfVersion() == 2)
return AP->getDataLayout().getPointerSize();
return sizeof(int32_t);
}
#ifndef NDEBUG
void DIEEntry::print(raw_ostream &O) const {
- O << format("Die: 0x%lx", (long)(intptr_t)Entry);
+ O << format("Die: 0x%lx", (long)(intptr_t)&Entry);
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+// DIETypeSignature Implementation
+//===----------------------------------------------------------------------===//
+void DIETypeSignature::EmitValue(AsmPrinter *Asm, dwarf::Form Form) const {
+ assert(Form == dwarf::DW_FORM_ref_sig8);
+ Asm->OutStreamer.EmitIntValue(Unit.getTypeSignature(), 8);
+}
+
+#ifndef NDEBUG
+void DIETypeSignature::print(raw_ostream &O) const {
+ O << format("Type Unit: 0x%lx", Unit.getTypeSignature());
+}
+
+void DIETypeSignature::dump() const { print(dbgs()); }
+#endif
+
+//===----------------------------------------------------------------------===//
+// DIELoc Implementation
+//===----------------------------------------------------------------------===//
+
+/// ComputeSize - calculate the size of the location expression.
+///
+unsigned DIELoc::ComputeSize(AsmPrinter *AP) const {
+ if (!Size) {
+ const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
+ for (unsigned i = 0, N = Values.size(); i < N; ++i)
+ Size += Values[i]->SizeOf(AP, AbbrevData[i].getForm());
+ }
+
+ return Size;
+}
+
+/// EmitValue - Emit location data.
+///
+void DIELoc::EmitValue(AsmPrinter *Asm, dwarf::Form Form) const {
+ switch (Form) {
+ 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:
+ case dwarf::DW_FORM_exprloc:
+ Asm->EmitULEB128(Size); break;
+ }
+
+ const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
+ for (unsigned i = 0, N = Values.size(); i < N; ++i)
+ Values[i]->EmitValue(Asm, AbbrevData[i].getForm());
+}
+
+/// SizeOf - Determine size of location data in bytes.
+///
+unsigned DIELoc::SizeOf(AsmPrinter *AP, dwarf::Form Form) const {
+ switch (Form) {
+ case dwarf::DW_FORM_block1: return Size + sizeof(int8_t);
+ 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:
+ case dwarf::DW_FORM_exprloc:
+ return Size + getULEB128Size(Size);
+ default: llvm_unreachable("Improper form for block");
+ }
+}
+
+#ifndef NDEBUG
+void DIELoc::print(raw_ostream &O) const {
+ O << "ExprLoc: ";
+ DIE::print(O, 5);
}
#endif
@@ -403,7 +490,7 @@ void DIEEntry::print(raw_ostream &O) const {
/// ComputeSize - calculate the size of the block.
///
-unsigned DIEBlock::ComputeSize(AsmPrinter *AP) {
+unsigned DIEBlock::ComputeSize(AsmPrinter *AP) const {
if (!Size) {
const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
for (unsigned i = 0, N = Values.size(); i < N; ++i)
@@ -436,7 +523,7 @@ unsigned DIEBlock::SizeOf(AsmPrinter *AP, dwarf::Form Form) const {
case dwarf::DW_FORM_block1: return Size + sizeof(int8_t);
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);
+ case dwarf::DW_FORM_block: return Size + getULEB128Size(Size);
default: llvm_unreachable("Improper form for block");
}
}
@@ -447,3 +534,34 @@ void DIEBlock::print(raw_ostream &O) const {
DIE::print(O, 5);
}
#endif
+
+//===----------------------------------------------------------------------===//
+// DIELocList Implementation
+//===----------------------------------------------------------------------===//
+
+unsigned DIELocList::SizeOf(AsmPrinter *AP, dwarf::Form Form) const {
+ if (Form == dwarf::DW_FORM_data4)
+ return 4;
+ if (Form == dwarf::DW_FORM_sec_offset)
+ return 4;
+ return AP->getDataLayout().getPointerSize();
+}
+
+/// EmitValue - Emit label value.
+///
+void DIELocList::EmitValue(AsmPrinter *AP, dwarf::Form Form) const {
+ DwarfDebug *DD = AP->getDwarfDebug();
+ MCSymbol *Label = DD->getDebugLocEntries()[Index].Label;
+
+ if (AP->MAI->doesDwarfUseRelocationsAcrossSections() && !DD->useSplitDwarf())
+ AP->EmitSectionOffset(Label, DD->getDebugLocSym());
+ else
+ AP->EmitLabelDifference(Label, DD->getDebugLocSym(), 4);
+}
+
+#ifndef NDEBUG
+void DIELocList::print(raw_ostream &O) const {
+ O << "LocList: " << Index;
+
+}
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 10:19:53 +0000