#include "llvm/IR/Module.h"
#include "llvm/LTO/LTO.h"
#include "llvm/MC/StringTableBuilder.h"
+#include "llvm/Object/ELFObjectFile.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/raw_ostream.h"
std::vector<InputFile *> InputFile::Pool;
-template <class ELFT> DIHelper<ELFT>::DIHelper(elf::InputFile *F) {
+namespace {
+// In ELF object file all section addresses are zero. If we have multiple
+// .text sections (when using -ffunction-section or comdat group) then
+// LLVM DWARF parser will not be able to parse .debug_line correctly, unless
+// we assign each section some unique address. This callback method assigns
+// each section an address equal to its offset in ELF object file.
+class ObjectInfo : public LoadedObjectInfo {
+public:
+ uint64_t getSectionLoadAddress(const object::SectionRef &Sec) const override {
+ return static_cast<const ELFSectionRef &>(Sec).getOffset();
+ }
+ std::unique_ptr<LoadedObjectInfo> clone() const override {
+ return std::unique_ptr<LoadedObjectInfo>();
+ }
+};
+}
+
+template <class ELFT> DIHelper<ELFT>::DIHelper(InputFile *F) {
Expected<std::unique_ptr<object::ObjectFile>> Obj =
object::ObjectFile::createObjectFile(F->MB);
if (!Obj)
return;
- DWARFContextInMemory Dwarf(*Obj.get());
+ ObjectInfo ObjInfo;
+ DWARFContextInMemory Dwarf(*Obj.get(), &ObjInfo);
DwarfLine.reset(new DWARFDebugLine(&Dwarf.getLineSection().Relocs));
DataExtractor LineData(Dwarf.getLineSection().Data,
ELFT::TargetEndianness == support::little,
template <class ELFT> DIHelper<ELFT>::~DIHelper() {}
-template <class ELFT> std::string DIHelper<ELFT>::getLineInfo(uintX_t Offset) {
+template <class ELFT>
+std::string DIHelper<ELFT>::getLineInfo(InputSectionBase<ELFT> *S,
+ uintX_t Offset) {
if (!DwarfLine)
return "";
const DWARFDebugLine::LineTable *LineTbl = DwarfLine->getLineTable(0);
if (!LineTbl)
return "";
- LineTbl->getFileLineInfoForAddress(Offset, nullptr, Spec.FLIKind, LineInfo);
+
+ // Use fake address calcuated by adding section file offset and offset in
+ // section.
+ // See comments for ObjectInfo class
+ LineTbl->getFileLineInfoForAddress(S->Offset + Offset, nullptr, Spec.FLIKind,
+ LineInfo);
return LineInfo.Line != 0
? LineInfo.FileName + " (" + std::to_string(LineInfo.Line) + ")"
: "";
Kind SectionKind)
: InputSectionBase(File, Hdr->sh_flags, Hdr->sh_type, Hdr->sh_entsize,
Hdr->sh_link, Hdr->sh_info, Hdr->sh_addralign,
- getSectionContents(File, Hdr), Name, SectionKind) {}
+ getSectionContents(File, Hdr), Name, SectionKind) {
+ this->Offset = Hdr->sh_offset;
+}
template <class ELFT> size_t InputSectionBase<ELFT>::getSize() const {
if (auto *D = dyn_cast<InputSection<ELFT>>(this))
# CHECK: error: undef.s (.text+0x10): undefined symbol 'foo(int)'
# CHECK: error: {{.*}}2.a({{.*}}.o) (.text+0x0): undefined symbol 'zed2'
# CHECK: error: undef-debug.s (3): undefined symbol 'zed3'
+# CHECK: error: undef-debug.s (7): undefined symbol 'zed4'
+# CHECK: error: undef-debug.s (11): undefined symbol 'zed5'
# RUN: not ld.lld %t.o %t2.a -o %t.exe -no-demangle 2>&1 | \
# RUN: FileCheck -check-prefix=NO-DEMANGLE %s