commit b360e566cfdeba907cd4bf1c04365387726ce479
author Aaron Smith <aaron.smith@microsoft.com> Thu Mar 22 04:08:15 2018 +0000
committer Aaron Smith <aaron.smith@microsoft.com> Thu Mar 22 04:08:15 2018 +0000
tree 8ecb4b0c4c7b1f31a76ad3f36f9295ec7a1c4e1f
parent fcd7af40529f4e74c27429606b5cd2e3aa5166dd

[DIA] Add IPDBSectionContrib interfaces and DIA implementation

To resolve symbol context at a particular address, we need to
determine the compiland for the address. We are able to determine
the parent compiland of PDBSymbolFunc, PDBSymbolTypeUDT,
PDBSymbolTypeEnum symbols indirectly through line information. 
However no such information is availabile for PDBSymbolData, 
i.e. variables.

The Section Contribution table from PDBs has information about
each compiland's contribution to sections by address. For example,
a piece of a contribution looks like,

  VA         RelativeVA  Sect No.  Offset    Length    Compiland
  14000087B0 000087B0    0001      000077B0  000000BB  exe_main.obj

So given an address, it's possible to determine its compiland with
this information.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@328178 91177308-0d34-0410-b5e6-96231b3b80d8