Alexander Shaposhnikov 33fa33ff0d [Reflection] Fix several issues for COFF and ELF ...

Previously when ReflectionContext was parsing the image of a binary
(for ELF or COFF) it was making some incorrect assumptions about the location
of sections in the memory of a remote process. In particular, it was using the offsets
rather than the virtual addresses and it was incorrectly calculating the references (relative pointers)
inside the metadata. In this diff we address these issues and adjust swift-reflection-dump
(used in tests) to emulate the runtime behavior more closely.
This diff has been extensively tested, the reflection tests are green on OSX and Linux,
on Windows it fixes 2 new tests:
    Reflection/typeref_decoding.swift
    stdlib/ReflectionHashing.swift
So now (with some minor fixes to the lit testsing infrastructure) the following reflection
tests pass:
    Reflection/box_descriptors.sil
    Reflection/capture_descriptors.sil
    Reflection/typeref_decoding.swift
    stdlib/ReflectionHashing.swift

2019-04-02 21:22:56 -07:00

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