Add support for pointer authentication environment#1713
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jchlanda wants to merge 1 commit intorust-lang:mainfrom
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Add support for pointer authentication environment#1713jchlanda wants to merge 1 commit intorust-lang:mainfrom
jchlanda wants to merge 1 commit intorust-lang:mainfrom
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This PR adds support for
aarch64-unknown-linux-pauthtest, a target that enables Pointer Authentication Code (PAC) support in Rust on AArch64 ELF based Linux systems. It uses theaarch64-unknown-linux-pauthtestLLVM target and a pointer-authentication-enabled sysroot with a custom musl as a reference libc implementation. Dynamic linking is required, with a dynamic linker acting as the ELF interpreter that can resolve pauth relocations and enforce pointer authentication constraints.Please note, that while
cc-rsis able to compile c/c++ sources and link against the target binary successfully this is not sufficient foraarch64-unknown-linux-pauthtest. The target has a hard requirement on shared objects and dynamic linker must be used. This seems to be incompatible with the current state ofcc-rs.Please consult a rust-lang PR for the details on the target: rust-lang/rust#155722