Add support for aarch64-unknown-linux-pauthtest#755
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jchlanda wants to merge 1 commit intorust-lang:masterfrom
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Add support for aarch64-unknown-linux-pauthtest#755jchlanda wants to merge 1 commit intorust-lang:masterfrom
aarch64-unknown-linux-pauthtest#755jchlanda wants to merge 1 commit intorust-lang:masterfrom
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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 using a pauthtest ABI (provided by LLVM) and pauthtest-enabled sysroot with custom musl, serving as a reference libc implementation.
bjorn3
reviewed
Apr 20, 2026
| // as uw::_Unwind_FindEnclosingFunction creates a new context so | ||
| // the SP used for signing here would belong to a different frame | ||
| // that the one used for auth-resign. Hence return a raw value. | ||
| self.ip() |
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Why is ip not signed? It is directly the result of _Unwind_GetIP. It should be possible to pass that to _Unwind_FindEnclosingFunction. How else would you even be able to use _Unwind_FindEnclosingFunction otherwise?
bjorn3
reviewed
Apr 20, 2026
| // clause, and if this is fixed that test in theory can be run on macOS! | ||
| if cfg!(target_vendor = "apple") { | ||
| self.ip() | ||
| } else if cfg!(target_env = "pauthtest") { |
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Should this not check for the respective target feature being enabled? Not every target with pointer authentication enabled will use that target env, right?
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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 using a pauthtest ABI (provided by LLVM) and pauthtest-enabled sysroot with custom musl, serving as a reference libc implementation.Please consult a rust-lang PR for the details on the target: TODO JKB Add link