[llvm-dev] LLVM PDB Support

[Reid Kleckner via llvm-dev]

The compiler is responsible for emitting codeview records into the .debug$S
(symbol) and .debug$T (type) object file sections. You can run
`llvm-readobj -codeview` or `llvm-pdbutil dump` on object files produced by
cl or clang-cl to get an idea of the kinds of records you need to output.
Take a look at cvinfo.h for reference on the on-disk format:
https://github.com/Microsoft/microsoft-pdb/blob/master/include/cvinfo.h

On Mon, Oct 30, 2017 at 8:46 PM, Meena Jain via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Dear Matt,
>
> Thank you so much for providing me these details.
>
> These seems to be very helpful and enough to start with.
>
> Between, I have a query in general,
>
> I read somewhere that Microsoft linker generates the PDB file.
>
> We have a proprietary compiler which generates windows compatible object
> code. We are using Microsoft linker only to generate the executable. Though
> we are able to generate PDB file using the linker /debug option but since
> it does not contain source information, we are not able to do the source
> level debugging. However, we are able to do assembly level debugging.
>
> My doubt is, what role compiler plays which helps Microsoft linker to
> generate the PDB file with source level debugging information.
>
> Thanks and Regards
> Meena
>
>
> -----Original Message-----
> From: llvm-dev [mailto:llvm-dev-bounces at lists.llvm.org] On Behalf Of Matt
> P. Dziubinski via llvm-dev
> Sent: Tuesday, October 31, 2017 5:44 AM
> To: llvm-dev at lists.llvm.org
> Subject: Re: [llvm-dev] LLVM PDB Support
>
> Hi Meena,
>
> On 10/30/2017 08:03, Meena Jain via llvm-dev wrote:
>  > I am trying to understand the Microsoft PDB format and I heard that
> LLVM provides support to Microsoft PDB file format.
>  > It would be great if you can provide some pointers regarding the same
> to start with.
>
> I've made my resources on these topics publicly available -- perhaps they
> can be of some use or help:
>
> Executable and object file formats (ELF, Mach-O, PE: EXE & DLL); debugging
> data formats (DWARF, PDB): articles, documentation, software, and talks.
> https://github.com/MattPD/cpplinks/blob/master/executables.md
>
> In particular, here's the section on PDB:
> https://github.com/MattPD/cpplinks/blob/master/executables.md#pdb-program-
> database
>
> Best regards,
>
> Matt
>
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