[all-commits] [llvm/llvm-project] 417d2d: [PAC][lld][AArch64][ELF] Support signed GOT (#113815)

[Daniil Kovalev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 417d2d7ce694acfa09a7d950cf1c5c41796eb313
      https://github.com/llvm/llvm-project/commit/417d2d7ce694acfa09a7d950cf1c5c41796eb313
  Author: Daniil Kovalev <dkovalev at accesssoftek.com>
  Date:   2024-12-17 (Tue, 17 Dec 2024)

  Changed paths:
    M lld/ELF/Arch/AArch64.cpp
    M lld/ELF/InputSection.cpp
    M lld/ELF/Relocations.cpp
    M lld/ELF/Relocations.h
    M lld/ELF/Symbols.h
    M lld/ELF/SyntheticSections.cpp
    M lld/ELF/SyntheticSections.h
    A lld/test/ELF/aarch64-got-relocations-pauth.s

  Log Message:
  -----------
  [PAC][lld][AArch64][ELF] Support signed GOT (#113815)

Depends on #113811

Support `R_AARCH64_AUTH_ADR_GOT_PAGE`, `R_AARCH64_AUTH_GOT_LO12_NC` and
`R_AARCH64_AUTH_GOT_ADD_LO12_NC` GOT-generating relocations. For preemptible
symbols, dynamic relocation `R_AARCH64_AUTH_GLOB_DAT` is emitted. Otherwise,
we unconditionally emit `R_AARCH64_AUTH_RELATIVE` dynamic relocation since
pointers in signed GOT needs to be signed during dynamic link time.



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