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| author | Daniil Kovalev <dkovalev@accesssoftek.com> | 2024-11-19 10:20:15 +0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-11-19 10:20:15 +0300 |
| commit | 3b162f73d8027dcd8261666a40e9bdfb40f4dacc (patch) | |
| tree | b231e8d1357cf02a01bd988112cd16922fe10c60 /clang/lib/CodeGen/CodeGenModule.cpp | |
| parent | 0488d1774b197513cf91d973e103f4e7de293c00 (diff) | |
| download | llvm-3b162f73d8027dcd8261666a40e9bdfb40f4dacc.zip llvm-3b162f73d8027dcd8261666a40e9bdfb40f4dacc.tar.gz llvm-3b162f73d8027dcd8261666a40e9bdfb40f4dacc.tar.bz2 | |
[PAC][clang] Add signed GOT cc1 flag (#96160)
Add `-fptrauth-elf-got` clang cc1 flag and set `ptrauth_elf_got`
preprocessor feature and `PointerAuthELFGOT` LangOption correspondingly.
No additional checks like ensuring OS binary format is ELF are
performed: it should be done on clang driver level when a pauth-enabled
environment implying signed GOT enabled is requested.
If the cc1 flag is passed, "ptrauth-elf-got" IR module flag is set.
Diffstat (limited to 'clang/lib/CodeGen/CodeGenModule.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CodeGenModule.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp index 508f534..4f45698 100644 --- a/clang/lib/CodeGen/CodeGenModule.cpp +++ b/clang/lib/CodeGen/CodeGenModule.cpp @@ -1213,6 +1213,9 @@ void CodeGenModule::Release() { getModule().addModuleFlag(llvm::Module::Min, "sign-return-address-with-bkey", 1); + if (LangOpts.PointerAuthELFGOT) + getModule().addModuleFlag(llvm::Module::Min, "ptrauth-elf-got", 1); + if (getTriple().isOSLinux()) { assert(getTriple().isOSBinFormatELF()); using namespace llvm::ELF; |