Crate nub_arch_x86 

Generic nub guest-kernel library for Hyperlight.

Houses the personality seam (personality), the CALL/HALT task loop (task), the generic RPC bodies + register_guest_kernel! (guest_fns), and the bare-metal substrate modules (page tables, JIT runtime, page allocator, ring-3 entry, segments). This crate produces no binaries: a personality crate (e.g. rust/javm-guest-x86, the Javm personality) plugs its state/cap system into the seam and owns the [[bin]] targets.

Downstream personality-crate requirements:

• a direct, unrenamed hyperlight-guest-bin dependency (register_guest_kernel! expands #[guest_function] attrs whose proc-macro resolves the crate by package name at the invoking crate) plus extern crate alloc; and extern crate hyperlight_guest_bin; at its lib root;
• its own link.x next to its manifest — nub_build::build resolves the linker script as manifest_dir.join("link.x"); copy rust/javm-guest-x86/link.x (canonical script until nub-build grows an explicit link-script parameter);
• a heap-diag = ["nub-arch-x86/heap-diag"] feature — the macro-stamped nub_heap_stats wrapper’s #[cfg(feature = "heap-diag")] resolves against the invoking crate.

Guest modules are gated on cfg(target_os = "none") so the lib also compiles on host targets — host code imports the test_abi module for FN_ID constants without dragging in any bare-metal deps.

Modules

test_abi

FN_ID constants shared between the test/bench guest binaries and host-side test/bench drivers. Always compiled — host-visible. FN_ID constants for personality-independent test/bench guest probes.