[PATCH] D75884: [RuntimeDyld][COFF] Build stubs for COFF dllimport symbols.

[Lang Hames via Phabricator via llvm-commits]

lhames created this revision.
lhames added a reviewer: compnerd.
Herald added subscribers: ributzka, hiraditya.
Herald added a project: LLVM.

Enables JIT-linking by RuntimeDyld of COFF objects that contain references to
dllimport symbols. This is done by recognizing symbols that start with the
reserved "__imp_" prefix and building a pointer entry to the target symbol in
the stubs area of the section. References to the "__imp_" symbol are updated to
point to this pointer.

Work in progress: The generic code is in place, but only RuntimeDyldCOFFX86_64
and RuntimeDyldCOFFI386 have been updated to look for and update references to
dllimport symbols.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D75884

Files:
  llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldCOFF.cpp
  llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldCOFF.h
  llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldImpl.h
  llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFAArch64.h
  llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFI386.h
  llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFThumb.h
  llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldCOFFX86_64.h

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