[patch]: Dump of .pdata/.xdata for x64 coff

[Dave Korn]

Kai Tietz wrote:

> About the const of the data block. I made it first const, too, like
> you did now. I reverted this, because otherwise we would have to
> redefine a new structure, when we begin to generate those entries.
> Without const we can do without this need. So with the const in
> structures I am not that happy here.

  Ah, I was thinking of crossing that bridge when we came to it, but it
certainly is better to be prepared.  Ok, I removed the const from the struct
members, and then also from pex64_get_unwind_info(); it didn't need removing
from a couple of other places where we're now locally taking const pointers to
non-const data (e.g. insns[] array), so I left them in.

  How do you like this version?  I tested x86_64-pc-mingw32 cross from
i686-pc-cygwin without any problems (and cygwin native, where of course none
of the new code should even come into play), but I don't have any sample files
with .pdata/.xdata to actually test it out on.  I won't re-run the whole big
testsuite on it (not quite finished yet on the earlier version), I'll infer
that if the results don't change on x86_64 by de-consting these things, and it
still compiles without error, then the same would apply to all the other
targets ...

    cheers,
      DaveK

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