[PATCH] D59780: Support Intel Control-flow Enforcement Technology

[Fangrui Song via Phabricator via llvm-commits]

MaskRay updated this revision to Diff 233263.
MaskRay added a comment.

Apply two patches

- uint64_t Plt = In.Plt->getVA();

+  uint64_t Plt = In.IBTPlt ? In.IBTPlt->getVA() : In.Plt->getVA();

- i/lld/ELF/Driver.cpp

+++ w/lld/ELF/Driver.cpp
@@ -1705,2 +1705,4 @@ template <class ELFT> static uint32_t getAndFeatures() {

- } else if (!features && config->requireCET)
- error(toString(f) + ": --require-cet: file is not compatible with CET");

+    } else if (config->requireCET && !(features & GNU_PROPERTY_X86_FEATURE_1_IBT)) {
+      warn(toString(f) + ": --require-cet: file is not compatible with CET");
+      features |= GNU_PROPERTY_X86_FEATURE_1_IBT;
+    }


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D59780/new/

https://reviews.llvm.org/D59780

Files:
  lld/ELF/Arch/X86.cpp
  lld/ELF/Arch/X86_64.cpp
  lld/ELF/Driver.cpp
  lld/ELF/Options.td
  lld/ELF/SyntheticSections.cpp
  lld/ELF/SyntheticSections.h
  lld/ELF/Target.h
  lld/ELF/Writer.cpp
  lld/docs/ld.lld.1
  lld/test/ELF/i386-cet.s
  lld/test/ELF/i386-feature-cet.s
  lld/test/ELF/x86-64-cet.s
  lld/test/ELF/x86-64-feature-cet.s

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