6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-07-21 02:29:22 +00:00
Code Issues Projects Releases Wiki Activity

Fixup for r167558: Store raw pointer (instead of reference) to RelocMap in DIContext. This is needed to prevent crashes because of dangling reference if the clients don't provide RelocMap to DIContext constructor.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167728 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alexey Samsonov 2012-11-12 14:25:36 +00:00
parent 30d8f0e977
commit 4c0ae9066f
5 changed files with 30 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/llvm/DebugInfo/DIContext.h
View File

@ -109,7 +109,7 @@ public:
StringRef lineSection = StringRef(),
StringRef stringSection = StringRef(),
StringRef rangeSection = StringRef(),
const RelocAddrMap &Map = RelocAddrMap());
const RelocAddrMap *Map = 0);
virtual void dump(raw_ostream &OS) = 0;

2
lib/DebugInfo/DIContext.cpp
View File

@ -20,7 +20,7 @@ DIContext *DIContext::getDWARFContext(bool isLittleEndian,
StringRef lineSection,
StringRef stringSection,
StringRef rangeSection,
const RelocAddrMap &Map) {
const RelocAddrMap *Map) {
return new DWARFContextInMemory(isLittleEndian, infoSection, abbrevSection,
aRangeSection, lineSection, stringSection,
rangeSection, Map);

8
lib/DebugInfo/DWARFContext.h
View File

@ -26,7 +26,7 @@ namespace llvm {
/// methods that a concrete implementation provides.
class DWARFContext : public DIContext {
bool IsLittleEndian;
const RelocAddrMap &RelocMap;
const RelocAddrMap *RelocMap;
SmallVector<DWARFCompileUnit, 1> CUs;
OwningPtr<DWARFDebugAbbrev> Abbrev;
@ -39,7 +39,7 @@ class DWARFContext : public DIContext {
/// Read compile units from the debug_info section and store them in CUs.
void parseCompileUnits();
protected:
DWARFContext(bool isLittleEndian, const RelocAddrMap &Map) :
DWARFContext(bool isLittleEndian, const RelocAddrMap *Map) :
IsLittleEndian(isLittleEndian), RelocMap(Map) {}
public:
virtual void dump(raw_ostream &OS);
@ -73,7 +73,7 @@ public:
DILineInfoSpecifier Specifier = DILineInfoSpecifier());
bool isLittleEndian() const { return IsLittleEndian; }
const RelocAddrMap &relocMap() const { return RelocMap; }
const RelocAddrMap *relocMap() const { return RelocMap; }
virtual StringRef getInfoSection() = 0;
virtual StringRef getAbbrevSection() = 0;
@ -113,7 +113,7 @@ public:
StringRef lineSection,
StringRef stringSection,
StringRef rangeSection,
const RelocAddrMap &Map = RelocAddrMap())
const RelocAddrMap *Map = 0)
: DWARFContext(isLittleEndian, Map),
InfoSection(infoSection),
AbbrevSection(abbrevSection),

38
lib/DebugInfo/DWARFFormValue.cpp
View File

@ -100,16 +100,20 @@ DWARFFormValue::extractValue(DataExtractor data, uint32_t *offset_ptr,
switch (Form) {
case DW_FORM_addr:
case DW_FORM_ref_addr: {
RelocAddrMap::const_iterator AI
= cu->getContext().relocMap().find(*offset_ptr);
if (AI != cu->getContext().relocMap().end()) {
const std::pair<uint8_t, int64_t> &R = AI->second;
Value.uval = R.second;
*offset_ptr += R.first;
} else
bool InRelocMap = false;
if (const RelocAddrMap *RelocMap = cu->getContext().relocMap()) {
RelocAddrMap::const_iterator AI = RelocMap->find(*offset_ptr);
if (AI != RelocMap->end()) {
const std::pair<uint8_t, int64_t> &R = AI->second;
Value.uval = R.second;
*offset_ptr += R.first;
InRelocMap = true;
}
}
if (!InRelocMap)
Value.uval = data.getUnsigned(offset_ptr, cu->getAddressByteSize());
}
break;
}
case DW_FORM_exprloc:
case DW_FORM_block:
Value.uval = data.getULEB128(offset_ptr);
@ -148,13 +152,17 @@ DWARFFormValue::extractValue(DataExtractor data, uint32_t *offset_ptr,
Value.sval = data.getSLEB128(offset_ptr);
break;
case DW_FORM_strp: {
RelocAddrMap::const_iterator AI
= cu->getContext().relocMap().find(*offset_ptr);
if (AI != cu->getContext().relocMap().end()) {
const std::pair<uint8_t, int64_t> &R = AI->second;
Value.uval = R.second;
*offset_ptr += R.first;
} else
bool InRelocMap = false;
if (const RelocAddrMap *RelocMap = cu->getContext().relocMap()) {
RelocAddrMap::const_iterator AI = RelocMap->find(*offset_ptr);
if (AI != RelocMap->end()) {
const std::pair<uint8_t, int64_t> &R = AI->second;
Value.uval = R.second;
*offset_ptr += R.first;
InRelocMap = true;
}
}
if (!InRelocMap)
Value.uval = data.getU32(offset_ptr);
break;
}

2
tools/llvm-dwarfdump/llvm-dwarfdump.cpp
View File

@ -162,7 +162,7 @@ static void DumpInput(const StringRef &Filename) {
DebugLineSection,
DebugStringSection,
DebugRangesSection,
RelocMap));
&RelocMap));
if (Address == -1ULL) {
outs() << Filename
<< ":\tfile format " << Obj->getFileFormatName() << "\n\n";