[PATCH] Add a few basic tests for llvm-pdbdump

[David Blaikie]

On Fri, Feb 20, 2015 at 12:44 PM, Zachary Turner <zturner at google.com> wrote:

> Bump.  The options being specified on the command line might be a little
> confusing.  I actually have a followup patch which drastically simplifies
> the options and probably will make reading these tests easier.  But I was
> goign to commit that after this (as the patch updates the tests and output
> as well).
>

Sure


> In any case, the basic idea of pdbdump-symbol-format.test is to dump
> symbol entries from object files.  Since we don't know what the internal
> format of PDB is, I wrote the dumper to dump entries in ways that would
> make it easier for people to understand what the information in the PDB
> represents *semantically*, as opposed to physically.  This is useful for
> someone writing a debugger, for example, so that they can know at a high
> level what kind of information they can expect to get from the PDB.
>

*nod* There's some risk that a higher level output might hide
representational details that are relevant to consuming the debug info -
hence the desire to keep it pretty bare-metal. But there's certainly
tradeoffs - dwarfdump is growing higher level dumping functionality slowly
at the moment, so the two tools might end up meeting in the middle, as it
were.


> In this example, you can see that the PDB knows about 2 object files,
> symbolformat.obj and symbolformat-fpo.obj.  For each one, all the symbols
> are dumped, which consist mostly of functions due to the fact that the
> original source code also consists mostly of functions.  RVAs


RVAs?

Anyway, looks like a good start - no doubt we'll iterate on it all a lot as
it goes along.

- David



> of the functions are dumped as well, in a format like
> [start+prologue_length - end-epilogue_length]
>
>
> http://reviews.llvm.org/D7656
>
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