[PATCH] D118948: [MTE] Add -fsanitize=memtag* and friends.

[Fangrui Song via Phabricator via cfe-commits]

MaskRay added inline comments.


================
Comment at: lld/ELF/SyntheticSections.cpp:3871
+  return sizeof(llvm::ELF::Elf64_Nhdr) +
+         /* namesz */ sizeof(kMemtagAndroidNoteName) +
+         /* descsz */ sizeof(uint32_t);
----------------
`/*namesz=*/`


================
Comment at: lld/ELF/SyntheticSections.h:1195
+      : SyntheticSection(llvm::ELF::SHF_ALLOC, llvm::ELF::SHT_NOTE,
+                         /* alignment */ 4, ".note.android.memtag") {}
+  void writeTo(uint8_t *buf) override;
----------------
`/*alignment=*/4`


================
Comment at: lld/ELF/Writer.cpp:367
+    if (config->emachine == EM_AARCH64 &&
+        config->memtagMode != llvm::ELF::NT_MEMTAG_LEVEL_DEFAULT) {
+      part.memtagAndroidNote = std::make_unique<MemtagAndroidNote>();
----------------



Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D118948/new/

https://reviews.llvm.org/D118948