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Diffstat (limited to 'lib/DebugInfo/DWARF/DWARFDie.cpp')
-rw-r--r--lib/DebugInfo/DWARF/DWARFDie.cpp134
1 files changed, 81 insertions, 53 deletions
diff --git a/lib/DebugInfo/DWARF/DWARFDie.cpp b/lib/DebugInfo/DWARF/DWARFDie.cpp
index 81ef0c8c7aec..d638dc4239f4 100644
--- a/lib/DebugInfo/DWARF/DWARFDie.cpp
+++ b/lib/DebugInfo/DWARF/DWARFDie.cpp
@@ -1,9 +1,8 @@
//===- DWARFDie.cpp -------------------------------------------------------===//
//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
@@ -87,7 +86,7 @@ static void dumpLocation(raw_ostream &OS, DWARFFormValue &FormValue,
DataExtractor Data(StringRef((const char *)Expr.data(), Expr.size()),
Ctx.isLittleEndian(), 0);
DWARFExpression(Data, U->getVersion(), U->getAddressByteSize())
- .print(OS, MRI);
+ .print(OS, MRI, U);
return;
}
@@ -101,10 +100,10 @@ static void dumpLocation(raw_ostream &OS, DWARFFormValue &FormValue,
auto LL = DebugLoc.parseOneLocationList(Data, &Offset);
if (LL) {
uint64_t BaseAddr = 0;
- if (Optional<SectionedAddress> BA = U->getBaseAddress())
+ if (Optional<object::SectionedAddress> BA = U->getBaseAddress())
BaseAddr = BA->Address;
- LL->dump(OS, Ctx.isLittleEndian(), Obj.getAddressSize(), MRI, BaseAddr,
- Indent);
+ LL->dump(OS, Ctx.isLittleEndian(), Obj.getAddressSize(), MRI, U,
+ BaseAddr, Indent);
} else
OS << "error extracting location list.";
return;
@@ -126,12 +125,12 @@ static void dumpLocation(raw_ostream &OS, DWARFFormValue &FormValue,
Data, &Offset, UseLocLists ? U->getVersion() : 4);
uint64_t BaseAddr = 0;
- if (Optional<SectionedAddress> BA = U->getBaseAddress())
+ if (Optional<object::SectionedAddress> BA = U->getBaseAddress())
BaseAddr = BA->Address;
if (LL)
LL->dump(OS, BaseAddr, Ctx.isLittleEndian(), Obj.getAddressSize(), MRI,
- Indent);
+ U, Indent);
else
OS << "error extracting location list.";
}
@@ -279,11 +278,7 @@ static void dumpAttribute(raw_ostream &OS, const DWARFDie &Die,
OS << formatv(" [{0}]", Form);
DWARFUnit *U = Die.getDwarfUnit();
- DWARFFormValue formValue(Form);
-
- if (!formValue.extractValue(U->getDebugInfoExtractor(), OffsetPtr,
- U->getFormParams(), U))
- return;
+ DWARFFormValue FormValue = DWARFFormValue::createFromUnit(Form, U, OffsetPtr);
OS << "\t(";
@@ -294,35 +289,33 @@ static void dumpAttribute(raw_ostream &OS, const DWARFDie &Die,
Color = HighlightColor::String;
if (const auto *LT = U->getContext().getLineTableForUnit(U))
if (LT->getFileNameByIndex(
- formValue.getAsUnsignedConstant().getValue(),
+ FormValue.getAsUnsignedConstant().getValue(),
U->getCompilationDir(),
DILineInfoSpecifier::FileLineInfoKind::AbsoluteFilePath, File)) {
File = '"' + File + '"';
Name = File;
}
- } else if (Optional<uint64_t> Val = formValue.getAsUnsignedConstant())
+ } else if (Optional<uint64_t> Val = FormValue.getAsUnsignedConstant())
Name = AttributeValueString(Attr, *Val);
if (!Name.empty())
WithColor(OS, Color) << Name;
else if (Attr == DW_AT_decl_line || Attr == DW_AT_call_line)
- OS << *formValue.getAsUnsignedConstant();
+ OS << *FormValue.getAsUnsignedConstant();
else if (Attr == DW_AT_high_pc && !DumpOpts.ShowForm && !DumpOpts.Verbose &&
- formValue.getAsUnsignedConstant()) {
+ FormValue.getAsUnsignedConstant()) {
if (DumpOpts.ShowAddresses) {
// Print the actual address rather than the offset.
uint64_t LowPC, HighPC, Index;
if (Die.getLowAndHighPC(LowPC, HighPC, Index))
OS << format("0x%016" PRIx64, HighPC);
else
- formValue.dump(OS, DumpOpts);
+ FormValue.dump(OS, DumpOpts);
}
- } else if (Attr == DW_AT_location || Attr == DW_AT_frame_base ||
- Attr == DW_AT_data_member_location ||
- Attr == DW_AT_GNU_call_site_value)
- dumpLocation(OS, formValue, U, sizeof(BaseIndent) + Indent + 4, DumpOpts);
+ } else if (DWARFAttribute::mayHaveLocationDescription(Attr))
+ dumpLocation(OS, FormValue, U, sizeof(BaseIndent) + Indent + 4, DumpOpts);
else
- formValue.dump(OS, DumpOpts);
+ FormValue.dump(OS, DumpOpts);
std::string Space = DumpOpts.ShowAddresses ? " " : "";
@@ -331,25 +324,25 @@ static void dumpAttribute(raw_ostream &OS, const DWARFDie &Die,
// interesting. These attributes are handled below.
if (Attr == DW_AT_specification || Attr == DW_AT_abstract_origin) {
if (const char *Name =
- Die.getAttributeValueAsReferencedDie(formValue).getName(
+ Die.getAttributeValueAsReferencedDie(FormValue).getName(
DINameKind::LinkageName))
OS << Space << "\"" << Name << '\"';
} else if (Attr == DW_AT_type) {
OS << Space << "\"";
- dumpTypeName(OS, Die.getAttributeValueAsReferencedDie(formValue));
+ dumpTypeName(OS, Die.getAttributeValueAsReferencedDie(FormValue));
OS << '"';
} else if (Attr == DW_AT_APPLE_property_attribute) {
- if (Optional<uint64_t> OptVal = formValue.getAsUnsignedConstant())
+ if (Optional<uint64_t> OptVal = FormValue.getAsUnsignedConstant())
dumpApplePropertyAttribute(OS, *OptVal);
} else if (Attr == DW_AT_ranges) {
const DWARFObject &Obj = Die.getDwarfUnit()->getContext().getDWARFObj();
// For DW_FORM_rnglistx we need to dump the offset separately, since
// we have only dumped the index so far.
- if (formValue.getForm() == DW_FORM_rnglistx)
+ if (FormValue.getForm() == DW_FORM_rnglistx)
if (auto RangeListOffset =
- U->getRnglistOffset(*formValue.getAsSectionOffset())) {
- DWARFFormValue FV(dwarf::DW_FORM_sec_offset);
- FV.setUValue(*RangeListOffset);
+ U->getRnglistOffset(*FormValue.getAsSectionOffset())) {
+ DWARFFormValue FV = DWARFFormValue::createFromUValue(
+ dwarf::DW_FORM_sec_offset, *RangeListOffset);
FV.dump(OS, DumpOpts);
}
if (auto RangesOrError = Die.getAddressRanges())
@@ -403,6 +396,7 @@ DWARFDie::findRecursively(ArrayRef<dwarf::Attribute> Attrs) const {
// DWARF. This corresponds to following the DW_AT_abstract_origin and
// DW_AT_specification just once.
SmallSet<DWARFDie, 3> Seen;
+ Seen.insert(*this);
while (!Worklist.empty()) {
DWARFDie Die = Worklist.back();
@@ -411,19 +405,16 @@ DWARFDie::findRecursively(ArrayRef<dwarf::Attribute> Attrs) const {
if (!Die.isValid())
continue;
- if (Seen.count(Die))
- continue;
-
- Seen.insert(Die);
-
if (auto Value = Die.find(Attrs))
return Value;
if (auto D = Die.getAttributeValueAsReferencedDie(DW_AT_abstract_origin))
- Worklist.push_back(D);
+ if (Seen.insert(D).second)
+ Worklist.push_back(D);
if (auto D = Die.getAttributeValueAsReferencedDie(DW_AT_specification))
- Worklist.push_back(D);
+ if (Seen.insert(D).second)
+ Worklist.push_back(D);
}
return None;
@@ -438,9 +429,11 @@ DWARFDie::getAttributeValueAsReferencedDie(dwarf::Attribute Attr) const {
DWARFDie
DWARFDie::getAttributeValueAsReferencedDie(const DWARFFormValue &V) const {
- if (auto SpecRef = toReference(V)) {
- if (auto SpecUnit = U->getUnitVector().getUnitForOffset(*SpecRef))
- return SpecUnit->getDIEForOffset(*SpecRef);
+ if (auto SpecRef = V.getAsRelativeReference()) {
+ if (SpecRef->Unit)
+ return SpecRef->Unit->getDIEForOffset(SpecRef->Unit->getOffset() + SpecRef->Offset);
+ if (auto SpecUnit = U->getUnitVector().getUnitForOffset(SpecRef->Offset))
+ return SpecUnit->getDIEForOffset(SpecRef->Offset);
}
return DWARFDie();
}
@@ -560,10 +553,12 @@ void DWARFDie::getCallerFrame(uint32_t &CallFile, uint32_t &CallLine,
/// Helper to dump a DIE with all of its parents, but no siblings.
static unsigned dumpParentChain(DWARFDie Die, raw_ostream &OS, unsigned Indent,
- DIDumpOptions DumpOpts) {
+ DIDumpOptions DumpOpts, unsigned Depth = 0) {
if (!Die)
return Indent;
- Indent = dumpParentChain(Die.getParent(), OS, Indent, DumpOpts);
+ if (DumpOpts.ParentRecurseDepth > 0 && Depth >= DumpOpts.ParentRecurseDepth)
+ return Indent;
+ Indent = dumpParentChain(Die.getParent(), OS, Indent, DumpOpts, Depth + 1);
Die.dump(OS, Indent, DumpOpts);
return Indent + 2;
}
@@ -611,8 +606,8 @@ void DWARFDie::dump(raw_ostream &OS, unsigned Indent,
}
DWARFDie child = getFirstChild();
- if (DumpOpts.ShowChildren && DumpOpts.RecurseDepth > 0 && child) {
- DumpOpts.RecurseDepth--;
+ if (DumpOpts.ShowChildren && DumpOpts.ChildRecurseDepth > 0 && child) {
+ DumpOpts.ChildRecurseDepth--;
DIDumpOptions ChildDumpOpts = DumpOpts;
ChildDumpOpts.ShowParents = false;
while (child) {
@@ -668,7 +663,7 @@ iterator_range<DWARFDie::attribute_iterator> DWARFDie::attributes() const {
}
DWARFDie::attribute_iterator::attribute_iterator(DWARFDie D, bool End)
- : Die(D), AttrValue(0), Index(0) {
+ : Die(D), Index(0) {
auto AbbrDecl = Die.getAbbreviationDeclarationPtr();
assert(AbbrDecl && "Must have abbreviation declaration");
if (End) {
@@ -690,18 +685,15 @@ void DWARFDie::attribute_iterator::updateForIndex(
AttrValue.Attr = AbbrDecl.getAttrByIndex(Index);
// Add the previous byte size of any previous attribute value.
AttrValue.Offset += AttrValue.ByteSize;
- AttrValue.Value.setForm(AbbrDecl.getFormByIndex(Index));
uint32_t ParseOffset = AttrValue.Offset;
auto U = Die.getDwarfUnit();
assert(U && "Die must have valid DWARF unit");
- bool b = AttrValue.Value.extractValue(U->getDebugInfoExtractor(),
- &ParseOffset, U->getFormParams(), U);
- (void)b;
- assert(b && "extractValue cannot fail on fully parsed DWARF");
+ AttrValue.Value = DWARFFormValue::createFromUnit(
+ AbbrDecl.getFormByIndex(Index), U, &ParseOffset);
AttrValue.ByteSize = ParseOffset - AttrValue.Offset;
} else {
assert(Index == NumAttrs && "Indexes should be [0, NumAttrs) only");
- AttrValue.clear();
+ AttrValue = {};
}
}
@@ -710,3 +702,39 @@ DWARFDie::attribute_iterator &DWARFDie::attribute_iterator::operator++() {
updateForIndex(*AbbrDecl, Index + 1);
return *this;
}
+
+bool DWARFAttribute::mayHaveLocationDescription(dwarf::Attribute Attr) {
+ switch (Attr) {
+ // From the DWARF v5 specification.
+ case DW_AT_location:
+ case DW_AT_byte_size:
+ case DW_AT_bit_size:
+ case DW_AT_string_length:
+ case DW_AT_lower_bound:
+ case DW_AT_return_addr:
+ case DW_AT_bit_stride:
+ case DW_AT_upper_bound:
+ case DW_AT_count:
+ case DW_AT_data_member_location:
+ case DW_AT_frame_base:
+ case DW_AT_segment:
+ case DW_AT_static_link:
+ case DW_AT_use_location:
+ case DW_AT_vtable_elem_location:
+ case DW_AT_allocated:
+ case DW_AT_associated:
+ case DW_AT_byte_stride:
+ case DW_AT_rank:
+ case DW_AT_call_value:
+ case DW_AT_call_origin:
+ case DW_AT_call_target:
+ case DW_AT_call_target_clobbered:
+ case DW_AT_call_data_location:
+ case DW_AT_call_data_value:
+ // Extensions.
+ case DW_AT_GNU_call_site_value:
+ return true;
+ default:
+ return false;
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-22 13:39:31 +0000