On Tue, Nov 29, 2011 at 11:08 PM, Benjamin Kramer <[email protected]>wrote:
> On 30.11.2011, at 02:57, Kostya Serebryany <[email protected]> wrote: > > Hello, > > I am working on integrating AddressSanitizer (aka asan, > http://clang.llvm.org/docs/AddressSanitizer.html) run-time library with > the llvm compiler-rt. > Asan needs to symbolize PCs, i.e. given a value of a PC it needs to > produce the file name and the line number (if debug info is present). > Currently, this is achieved by printing the PCs as > /path/to/object/file+offset and filtering the output with a script which > uses addr2line/atos. > Ideally, symbolization should happen inside the process and should not > require post processing. > > I would expect that lldb already has such functionality, right? > Somewhere in include/lldb/Symbol/Symtab.h? > Does it work on both Linux and Mac? > Do you think that it is possible/desirable to have this kind of code > sharing between lldb and asan? > Will that work with the current build system (where lldb and > compiler-rt/lib/asan are separate subprojects)? > > > I recently extracted the DWARF parsing that's necessary to get line > numbers from addresses out of lldb into LLVM. Take a look at llvm-dwarfdump > and the DebugInfo library. > Nice! This will solve the build dependency problem. We'll look into it. > It requires relocations to be resolved upfront though, so it won't work on > Linux out of the box (DWARF doesn't use relocations on OS X). > Ugh. :( --kcc > > -Ben >
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