diff options
| author | Daniil Kovalev <dkovalev@accesssoftek.com> | 2024-08-06 18:24:01 +0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-08-06 18:24:01 +0300 |
| commit | 15d4a84e7977725dc0661995963a12ff8605b03c (patch) | |
| tree | 931abb46a35401874fc1d235fd8dad2ab4310c97 /clang/lib/CodeGen/CodeGenModule.cpp | |
| parent | 9684c87d1402ea9327c1abd7f56bafed8e751f51 (diff) | |
| download | llvm-15d4a84e7977725dc0661995963a12ff8605b03c.zip llvm-15d4a84e7977725dc0661995963a12ff8605b03c.tar.gz llvm-15d4a84e7977725dc0661995963a12ff8605b03c.tar.bz2 | |
[PAC][ELF][AArch64] Encode signed GOT flag in PAuth core info (#96159)
Treat 8th bit of version value for llvm_linux platform as signed GOT
flag.
- clang: define `PointerAuthELFGOT` LangOption and set 8th bit of
`aarch64-elf-pauthabi-version` LLVM module flag correspondingly;
- llvm-readobj: print `PointerAuthELFGOT` or `!PointerAuthELFGOT` in
version description of llvm_linux platform depending on whether the flag
is set.
Diffstat (limited to 'clang/lib/CodeGen/CodeGenModule.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CodeGenModule.cpp | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp index 50484a0..9aaf90c 100644 --- a/clang/lib/CodeGen/CodeGenModule.cpp +++ b/clang/lib/CodeGen/CodeGenModule.cpp @@ -1218,11 +1218,12 @@ void CodeGenModule::Release() { (LangOpts.PointerAuthInitFini << AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_INITFINI) | (LangOpts.PointerAuthInitFiniAddressDiscrimination - << AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_INITFINIADDRDISC); - static_assert( - AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_INITFINIADDRDISC == - AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_LAST, - "Update when new enum items are defined"); + << AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_INITFINIADDRDISC) | + (LangOpts.PointerAuthELFGOT + << AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_GOT); + static_assert(AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_GOT == + AARCH64_PAUTH_PLATFORM_LLVM_LINUX_VERSION_LAST, + "Update when new enum items are defined"); if (PAuthABIVersion != 0) { getModule().addModuleFlag(llvm::Module::Error, "aarch64-elf-pauthabi-platform", |