Implement an option -fptrauth-init-fini allowing to sign pointers in
init/fini arrays with a constant discriminator distinguishing them from
other function pointers.
The discriminator value is 0xD9D4 which stands for
ptrauth_string_discriminator("init_fini").
A preprocessor expression __has_feature(ptrauth_init_fini) allows to change
user code behavior depending on presense of the feature.
The option is automatically enabled when building with
-mbranch-protection=pauthabi and disabled by default otherwise.
Implemented in 4fb933cc2d3629905a7ddf56ae96276484371a3d.
Implement an option
-fptrauth-init-finiallowing to sign pointers in init/fini arrays with a constant discriminator distinguishing them from other function pointers.The discriminator value is 0xD9D4 which stands for
ptrauth_string_discriminator("init_fini").A preprocessor expression
__has_feature(ptrauth_init_fini)allows to change user code behavior depending on presense of the feature.The option is automatically enabled when building with
-mbranch-protection=pauthabiand disabled by default otherwise.Implemented in 4fb933cc2d3629905a7ddf56ae96276484371a3d.