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Fix some formatting & add comments, following Eric's review 

llvm-svn: 174473
This commit is contained in:
Eli Bendersky 2013-02-06 00:20:38 +00:00
parent e7b56375e1
commit 1aa265d12b
1 changed files with 19 additions and 12 deletions
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31
llvm/lib/DebugInfo/DWARFDebugFrame.cpp
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@ -21,16 +21,23 @@ class llvm::FrameEntry {
public:
enum FrameKind {FK_CIE, FK_FDE};
FrameEntry(FrameKind K, DataExtractor D, uint64_t Offset, uint64_t Length)
: Kind(K), Data(D), Offset(Offset), Length(Length)
{}
: Kind(K), Data(D), Offset(Offset), Length(Length) {}
FrameKind getKind() const { return Kind; }
virtual void dumpHeader(raw_ostream &OS) const = 0;
protected:
const FrameKind Kind;
/// \brief The data stream holding the section from which the entry was
/// parsed.
DataExtractor Data;
/// \brief Offset of this entry in the section.
uint64_t Offset;
/// \brief Entry length as specified in DWARF.
uint64_t Length;
};
@ -45,8 +52,7 @@ public:
: FrameEntry(FK_CIE, D, Offset, Length), Version(Version),
Augmentation(Augmentation), CodeAlignmentFactor(CodeAlignmentFactor),
DataAlignmentFactor(DataAlignmentFactor),
ReturnAddressRegister(ReturnAddressRegister)
{}
ReturnAddressRegister(ReturnAddressRegister) {}
void dumpHeader(raw_ostream &OS) const {
OS << format("%08x %08x %08x CIE", Offset, Length, DW_CIE_ID) << "\n";
@ -61,7 +67,9 @@ public:
static bool classof(const FrameEntry *FE) {
return FE->getKind() == FK_CIE;
}
private:
/// The following fields are defined in section 6.4.1 of the DWARF standard v3
uint8_t Version;
SmallString<8> Augmentation;
uint64_t CodeAlignmentFactor;
@ -75,12 +83,11 @@ public:
// Each FDE has a CIE it's "linked to". Our FDE contains is constructed with
// an offset to the CIE (provided by parsing the FDE header). The CIE itself
// is obtained lazily once it's actually required.
FDE(DataExtractor D, uint64_t Offset, uint64_t Length, int64_t LinkedCIEOffset,
uint64_t InitialLocation, uint64_t AddressRange)
FDE(DataExtractor D, uint64_t Offset, uint64_t Length,
int64_t LinkedCIEOffset, uint64_t InitialLocation, uint64_t AddressRange)
: FrameEntry(FK_FDE, D, Offset, Length), LinkedCIEOffset(LinkedCIEOffset),
InitialLocation(InitialLocation), AddressRange(AddressRange),
LinkedCIE(NULL)
{}
LinkedCIE(NULL) {}
void dumpHeader(raw_ostream &OS) const {
OS << format("%08x %08x %08x FDE ", Offset, Length, LinkedCIEOffset);
@ -94,6 +101,8 @@ public:
return FE->getKind() == FK_FDE;
}
private:
/// The following fields are defined in section 6.4.1 of the DWARF standard v3
uint64_t LinkedCIEOffset;
uint64_t InitialLocation;
uint64_t AddressRange;
@ -101,13 +110,11 @@ private:
};
DWARFDebugFrame::DWARFDebugFrame()
{
DWARFDebugFrame::DWARFDebugFrame() {
}
DWARFDebugFrame::~DWARFDebugFrame()
{
DWARFDebugFrame::~DWARFDebugFrame() {
for (EntryVector::iterator I = Entries.begin(), E = Entries.end();
I != E; ++I) {
delete *I;