[PATCH] D57749: [LLD][ELF] - Set DF_STATIC_TLS flag for i386 target.

Tue Feb 5 06:16:54 PST 2019

grimar created this revision.
grimar added a reviewer: ruiu.
Herald added subscribers: krytarowski, arichardson.
Herald added a reviewer: espindola.

DF_STATIC_TLS
If set in a shared object or executable, this flag instructs the dynamic linker to reject attempts to load this file dynamically. It indicates that the shared object or executable contains code using a static thread-local storage scheme.

Patch checks if IE/LE relocations were used to check if the code uses a static model. If so it sets the DF_STATIC_TLS flag.

It is based on D32354 <https://reviews.llvm.org/D32354> which was reverted because we decided to not support the DF_STATIC_TLS at that time.
But now it will be used in FreeBSD.

https://reviews.llvm.org/D57749

Files:
  ELF/Arch/X86.cpp
  ELF/Config.h
  ELF/SyntheticSections.cpp
  test/ELF/Inputs/i386-static-tls-model1.s
  test/ELF/Inputs/i386-static-tls-model2.s
  test/ELF/Inputs/i386-static-tls-model3.s
  test/ELF/Inputs/i386-static-tls-model4.s
  test/ELF/i386-static-tls-model.s
  test/ELF/i386-tls-ie-shared.s
  test/ELF/tls-dynamic-i686.s
  test/ELF/tls-opt-iele-i686-nopic.s

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