llvm/compiler-rt/lib/sanitizer_common/sanitizer_ptrauth.h

//===-- sanitizer_ptrauth.h -------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef SANITIZER_PTRAUTH_H
#define SANITIZER_PTRAUTH_H

#if __has_feature(ptrauth_intrinsics)
#  include <ptrauth.h>
#elif defined(__ARM_FEATURE_PAC_DEFAULT) && !defined(__APPLE__)
// On the stack the link register is protected with Pointer
// Authentication Code when compiled with -mbranch-protection.
// Let's stripping the PAC unconditionally because xpaclri is in
// the NOP space so will do nothing when it is not enabled or not available.
#define ptrauth_strip …
#define ptrauth_auth_data …
#define ptrauth_string_discriminator …
#else
// Copied from <ptrauth.h>
#define ptrauth_strip(__value, __key) …
#define ptrauth_auth_data(__value, __old_key, __old_data) …
#define ptrauth_string_discriminator(__string) …
#endif

#define STRIP_PAC_PC(pc) …

#endif // SANITIZER_PTRAUTH_H