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Diffstat (limited to 'clang/lib/Headers/ptrauth.h')
| -rw-r--r-- | clang/lib/Headers/ptrauth.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/clang/lib/Headers/ptrauth.h b/clang/lib/Headers/ptrauth.h index f902ca1..ad28f06 100644 --- a/clang/lib/Headers/ptrauth.h +++ b/clang/lib/Headers/ptrauth.h @@ -241,6 +241,18 @@ typedef __UINTPTR_TYPE__ ptrauth_generic_signature_t; #define ptrauth_type_discriminator(__type) \ __builtin_ptrauth_type_discriminator(__type) +/* Compute the constant discriminator used by Clang to sign pointers with the + given C function pointer type. + + A call to this function is an integer constant expression. */ +#if __has_feature(ptrauth_function_pointer_type_discrimination) +#define ptrauth_function_pointer_type_discriminator(__type) \ + __builtin_ptrauth_type_discriminator(__type) +#else +#define ptrauth_function_pointer_type_discriminator(__type) \ + ((ptrauth_extra_data_t)0) +#endif + /* Compute a signature for the given pair of pointer-sized values. The order of the arguments is significant. @@ -372,6 +384,8 @@ typedef __UINTPTR_TYPE__ ptrauth_generic_signature_t; }) #define ptrauth_type_discriminator(__type) ((ptrauth_extra_data_t)0) +#define ptrauth_function_pointer_type_discriminator(__type) \ + ((ptrauth_extra_data_t)0) #define ptrauth_sign_generic_data(__value, __data) \ ({ \ |