Rewrite DIContext interface to take an object. Update all callers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167757 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/DebugInfo/DWARFContext.cpp b/lib/DebugInfo/DWARFContext.cpp
index afd614c..af11eed 100644
--- a/lib/DebugInfo/DWARFContext.cpp
+++ b/lib/DebugInfo/DWARFContext.cpp
@@ -298,4 +298,84 @@
return InliningInfo;
}
+DWARFContextInMemory::DWARFContextInMemory(object::ObjectFile *Obj) :
+ IsLittleEndian(true /* FIXME */) {
+ error_code ec;
+ for (object::section_iterator i = Obj->begin_sections(),
+ e = Obj->end_sections();
+ i != e; i.increment(ec)) {
+ StringRef name;
+ i->getName(name);
+ StringRef data;
+ i->getContents(data);
+
+ if (name.startswith("__DWARF,"))
+ name = name.substr(8); // Skip "__DWARF," prefix.
+ name = name.substr(name.find_first_not_of("._")); // Skip . and _ prefixes.
+ if (name == "debug_info")
+ InfoSection = data;
+ else if (name == "debug_abbrev")
+ AbbrevSection = data;
+ else if (name == "debug_line")
+ LineSection = data;
+ else if (name == "debug_aranges")
+ ARangeSection = data;
+ else if (name == "debug_str")
+ StringSection = data;
+ else if (name == "debug_ranges")
+ RangeSection = data;
+ // Any more debug info sections go here.
+ else
+ continue;
+
+ // TODO: For now only handle relocations for the debug_info section.
+ if (name != "debug_info")
+ continue;
+
+ if (i->begin_relocations() != i->end_relocations()) {
+ uint64_t SectionSize;
+ i->getSize(SectionSize);
+ for (object::relocation_iterator reloc_i = i->begin_relocations(),
+ reloc_e = i->end_relocations();
+ reloc_i != reloc_e; reloc_i.increment(ec)) {
+ uint64_t Address;
+ reloc_i->getAddress(Address);
+ uint64_t Type;
+ reloc_i->getType(Type);
+
+ object::RelocVisitor V(Obj->getFileFormatName());
+ // The section address is always 0 for debug sections.
+ object::RelocToApply R(V.visit(Type, *reloc_i));
+ if (V.error()) {
+ SmallString<32> Name;
+ error_code ec(reloc_i->getTypeName(Name));
+ if (ec) {
+ errs() << "Aaaaaa! Nameless relocation! Aaaaaa!\n";
+ }
+ errs() << "error: failed to compute relocation: "
+ << Name << "\n";
+ continue;
+ }
+
+ if (Address + R.Width > SectionSize) {
+ errs() << "error: " << R.Width << "-byte relocation starting "
+ << Address << " bytes into section " << name << " which is "
+ << SectionSize << " bytes long.\n";
+ continue;
+ }
+ if (R.Width > 8) {
+ errs() << "error: can't handle a relocation of more than 8 bytes at "
+ "a time.\n";
+ continue;
+ }
+ DEBUG(dbgs() << "Writing " << format("%p", R.Value)
+ << " at " << format("%p", Address)
+ << " with width " << format("%d", R.Width)
+ << "\n");
+ RelocMap[Address] = std::make_pair(R.Width, R.Value);
+ }
+ }
+ }
+}
+
void DWARFContextInMemory::anchor() { }