On 8 April 2014 05:54, Matthew Gardiner <[email protected]> wrote: > Hi people, > > I have been looking into the support for ARM binary images by lldb. One of > the ARM tool chains I use produces .debug_line tables as specified by DWARF > v3. With lldb and llvm-dwarfdump built from the top of the tree, I observed > that the dwarfdump tool dumps the line table, but lldb does not. After some > investigation I discovered that the dump tool is built against > llvm/lib/DebugInfo/DWARFDebugLine.cpp, whereas lldb uses > lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugLine.cpp.
Correct. The DWARF debug classes originated within LLDB, and were later reused in LLVM without moving LLDB over to use the new copy. > It turned out that the source used by lldb has a subtle difference in > flow-control with regards the treatment of the line table's prologue version > number compared to that of the llvm source. After duplication of this > flow-control, it is possible for lldb to print the line-table built > according to DWARF standards above and beyond v2. It's not quite that straightforward though, because the LLVM version has cases for version >= 4, which has an additional field in the prologue header format. I'll change the test to < 2 || > 3 for now. _______________________________________________ lldb-commits mailing list [email protected] http://lists.cs.uiuc.edu/mailman/listinfo/lldb-commits
