Add support for fetching inlining context (stack of source code locations)
by instruction address from DWARF.
Add --inlining flag to llvm-dwarfdump to demonstrate and test this functionality,
so that "llvm-dwarfdump --inlining --address=0x..." now works much like
"addr2line -i 0x...", provided that the binary has debug info
(Clang's -gline-tables-only *is* enough).
llvm-svn: 163128
diff --git a/llvm/lib/DebugInfo/DWARFDebugRangeList.cpp b/llvm/lib/DebugInfo/DWARFDebugRangeList.cpp
index fa15bb0..1806bee 100644
--- a/llvm/lib/DebugInfo/DWARFDebugRangeList.cpp
+++ b/llvm/lib/DebugInfo/DWARFDebugRangeList.cpp
@@ -37,10 +37,7 @@
clear();
return false;
}
- // The end of any given range list is marked by an end of list entry,
- // which consists of a 0 for the beginning address offset
- // and a 0 for the ending address offset.
- if (entry.StartAddress == 0 && entry.EndAddress == 0)
+ if (entry.isEndOfListEntry())
break;
Entries.push_back(entry);
}
@@ -57,3 +54,14 @@
}
OS << format("%08x <End of list>\n", Offset);
}
+
+bool DWARFDebugRangeList::containsAddress(uint64_t BaseAddress,
+ uint64_t Address) const {
+ for (int i = 0, n = Entries.size(); i != n; ++i) {
+ if (Entries[i].isBaseAddressSelectionEntry(AddressSize))
+ BaseAddress = Entries[i].EndAddress;
+ else if (Entries[i].containsAddress(BaseAddress, Address))
+ return true;
+ }
+ return false;
+}