Windows dump_syms: Add dumping of x86_64 CFI from PDB files

Windows dump_syms: Add dumping of x86_64 CFI from PDB files

Look for PDATA/XDATA streams in the PDB file, and use those to generate CFI.
Since those streams are only present in the PDB for PECOFF executables linked
using the /DEBUGTYPE:PDATA flag, we fall-back to the existing behaviour of
reading the corresponding PECOFF executable (if available) for PDATA/XDATA.

Generalize FindAndLoadOmapTable() as FindAndLoadDebugStream()

Factor out interpeting the PDATA/XDATA and outputting CFI lines as
PrintCFIFromXData(), and parameterize that by a class which performs RVA to
VA translation as appropriate to PDB streams or a PECOFF executable image
loaded with ImageHlp.

BUG=None

[jon.turney, 2016-03-09 14:17:48]

Description was changed from

==========
Windows dump_syms: Add dumping of x86_64 CFI from PDB files

Look for PDATA/XDATA streams in the PDB file, and use those to generate CFI.
Since those streams are only present in PECOFF executables linked using the
/DEBUGTYPE:PDATA flag, we fall-back to the existing behaviour of reading the
corresponding PECOFF executable (if available) for PDATA/XDATA.

Generalize FindAndLoadOmapTable() as FindAndLoadDebugStream()

Factor out interpeting the PDATA/XDATA and outputting CFI lines as
PrintCFIFromXData(), and parameterize that by a class which performs RVA to
VA translation as appropriate to PDB streams or a PECOFF executable image
loaded with ImageHlp.

BUG=None
==========

to

==========
Windows dump_syms: Add dumping of x86_64 CFI from PDB files

Look for PDATA/XDATA streams in the PDB file, and use those to generate CFI.
Since those streams are only present in PECOFF executables linked using the
/DEBUGTYPE:PDATA flag, we fall-back to the existing behaviour of reading the
corresponding PECOFF executable (if available) for PDATA/XDATA.

Generalize FindAndLoadOmapTable() as FindAndLoadDebugStream()

Factor out interpeting the PDATA/XDATA and outputting CFI lines as
PrintCFIFromXData(), and parameterize that by a class which performs RVA to
VA translation as appropriate to PDB streams or a PECOFF executable image
loaded with ImageHlp.

BUG=None
==========

[jon.turney, 2016-03-10 17:13:51]

jon.turney.1111@gmail.com changed reviewers:
+ ted.mielczarek@gmail.com

[jon.turney, 2016-06-10 12:21:35]

Description was changed from

==========
Windows dump_syms: Add dumping of x86_64 CFI from PDB files

Look for PDATA/XDATA streams in the PDB file, and use those to generate CFI.
Since those streams are only present in PECOFF executables linked using the
/DEBUGTYPE:PDATA flag, we fall-back to the existing behaviour of reading the
corresponding PECOFF executable (if available) for PDATA/XDATA.

Generalize FindAndLoadOmapTable() as FindAndLoadDebugStream()

Factor out interpeting the PDATA/XDATA and outputting CFI lines as
PrintCFIFromXData(), and parameterize that by a class which performs RVA to
VA translation as appropriate to PDB streams or a PECOFF executable image
loaded with ImageHlp.

BUG=None
==========

to

==========
Windows dump_syms: Add dumping of x86_64 CFI from PDB files

Look for PDATA/XDATA streams in the PDB file, and use those to generate CFI.
Since those streams are only present in the PDB for PECOFF executables linked
using the /DEBUGTYPE:PDATA flag, we fall-back to the existing behaviour of
reading the corresponding PECOFF executable (if available) for PDATA/XDATA.

Generalize FindAndLoadOmapTable() as FindAndLoadDebugStream()

Factor out interpeting the PDATA/XDATA and outputting CFI lines as
PrintCFIFromXData(), and parameterize that by a class which performs RVA to
VA translation as appropriate to PDB streams or a PECOFF executable image
loaded with ImageHlp.

BUG=None
==========