Module arch_helpers

Helper functions and types shared between multiple arch crates.

This function contains functions and types that do not have to be in the core kernel and are architecture-specific, but are shared by two or more arch crates. While these could also live in a dedicated crate, we use the kernel crate as all arch crates already depend on it.

Enums

• SyscallReturnVariant
  A (kernel private) set of variants that matches SyscallReturn. These must be mapped into ABI variants.
• TRD104SyscallReturnVariant
  Enumeration of the system call return type variant identifiers described in TRD104.
• TRD105SyscallReturnVariant
  Enumeration of the system call return type variant identifiers described in the (not yet existant) TRD105.

Traits

• Variant
  Trait alias for syscall variants

Functions

• encode_syscall_return_trd104
  Encode the system call return value into 4 registers, following the encoding specified in TRD104. Architectures which do not follow TRD104 are free to define their own encoding.
• encode_syscall_return_with_variant
  An extension of TRD104 that works for 32-bit and 64-bit platforms, and can remap variants.