[Openmp-commits] [PATCH] D99553: [libomptarget] Read standard notes for ELF offload images

[Vyacheslav Zakharin via Phabricator via Openmp-commits]

vzakhari created this revision.
vzakhari added a project: OpenMP.
Herald added subscribers: kerbowa, mgorny, nhaehnle, jvesely.
vzakhari requested review of this revision.
Herald added a reviewer: jdoerfert.
Herald added subscribers: openmp-commits, sstefan1.

This patch is a piece of D99360 <https://reviews.llvm.org/D99360>.

The patch implements an ELF light interface for the plugins to be able to ierate ELF notes in //SHT/PT_NOTE// sections/segments. One implementation is based on //libelf// and it can be used for platforms, where libelf depdency can be easily satisfied. The second implementation is based on //LLVM ELFObjectFile// and requires in-tree build - this one can be used on Windows, etc.

Debug output from the plugins would look like this:

> TARGET Common ELF --> LLVMOMPOFFLOAD ELF note NT_LLVM_OPENMP_OFFLOAD_VERSION with value: '1.0'
> TARGET Common ELF --> LLVMOMPOFFLOAD ELF note NT_LLVM_OPENMP_OFFLOAD_PRODUCER with value: 'LLVM'
> TARGET Common ELF --> LLVMOMPOFFLOAD ELF note NT_LLVM_OPENMP_OFFLOAD_PRODUCER_VERSION with value: '13.0.0git 9f8975163c75b1f9f736f9a8e0a60e29ac062754'


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D99553

Files:
  openmp/libomptarget/plugins/amdgpu/CMakeLists.txt
  openmp/libomptarget/plugins/common/elf_common/CMakeLists.txt
  openmp/libomptarget/plugins/common/elf_common/elf_common.cpp
  openmp/libomptarget/plugins/common/elf_common/elf_common.h
  openmp/libomptarget/plugins/common/elf_common/elf_constants.h
  openmp/libomptarget/plugins/common/elf_common/elf_light.cpp
  openmp/libomptarget/plugins/common/elf_common/elf_light.h
  openmp/libomptarget/plugins/remote/server/CMakeLists.txt
  openmp/libomptarget/test/offloading/llvmompoffload_notes.c

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