[all-commits] [llvm/llvm-project] 99a235: [LLD][COFF] Add support for ARM64EC import call th...

[Jacek Caban via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 99a235499337aff27d087c31916d6785d2e9a263
      https://github.com/llvm/llvm-project/commit/99a235499337aff27d087c31916d6785d2e9a263
  Author: Jacek Caban <jacek at codeweavers.com>
  Date:   2024-09-11 (Wed, 11 Sep 2024)

  Changed paths:
    M lld/COFF/Chunks.cpp
    M lld/COFF/Chunks.h
    M lld/COFF/Config.h
    M lld/COFF/Driver.cpp
    M lld/COFF/Driver.h
    M lld/COFF/InputFiles.cpp
    M lld/COFF/InputFiles.h
    M lld/COFF/MarkLive.cpp
    M lld/COFF/SymbolTable.cpp
    M lld/COFF/SymbolTable.h
    M lld/COFF/Writer.cpp
    M lld/test/COFF/Inputs/loadconfig-arm64ec.s
    M lld/test/COFF/arm64ec-import.test

  Log Message:
  -----------
  [LLD][COFF] Add support for ARM64EC import call thunks. (#107931)

These thunks can be accessed using `__impchk_*` symbols, though they
are typically not called directly. Instead, they are used to populate the
auxiliary IAT. When the imported function is x86_64 (or an ARM64EC
function with a patched export thunk), the thunk is used to call it.
Otherwise, the OS may replace the thunk at runtime with a direct
pointer to the ARM64EC function to avoid the overhead.



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