mach/vm_types_unsafe.h Kernel.framework

Macro to generate a wrapped "struct" that preserves ABI, but prevents direct manipulation of the type. The transparent union is needed because of arm64 which for "Composite" arguments passed on the stack will align them to 8 byte boundaries as per spec: If the argument is an alignment adjusted type its value is passed as a copy of the actual value. The copy will have an alignment defined as follows: - For a Fundamental Data Type, the alignment is the natural alignment of that type, after any promotions. - For a Composite Type, the alignment of the copy will have 8-byte alignment if its natural alignment is ≤ 8 and 16-byte alignment if its natural alignment is ≥ 16.

#define VM_GENERATE_UNSAFE_WRAPPER(_safe_type, _unsafe_type) typedef _safe_type _unsafe_type