[llvm-dev] llvm pdb utility question - how to convert real address to a segmented one

[Hayden Livingston via llvm-dev]

I will build LLVM locally, debug and report back.

On Sat, Mar 3, 2018 at 2:47 AM, Hayden Livingston
<halivingston at gmail.com> wrote:
> I've just started using the llvm-pdbutil tool. Great job on the general tool.
>
> But I'm having trouble figuring out how the output of the dump tool
> relates to real addresses in memory or for that matter relative
> virtual address either.
>
> Here's the logic I tried (which doesn't work):
>
> (1) Get Instruction Pointer of interest
> (2) Subtract the base address of the dll that address belongs to
> (3) You now have an RVA
>
> Use llvm-pdbutil to dump the pdb information.
>
> The problem is I'm unable to find (or approximate) this RVA in the
> dump information. The numbers in the llvm dumped files are in the form
> segment:offset but even after accounting for the segment, the offsets
> look way off.
>
> Does anybody have any idea what I might be doing wrong?