Function golden_kernel_dispatch_1d 

pub fn golden_kernel_dispatch_1d(
    workgroup_x: u16,
    grid_x: u32,
    kernel_object: u64,
    kernarg: u64,
    completion_signal: u64,
) -> [u8; 64]

Build a lawful minimal 1D kernel-dispatch packet (SoftGPU test fixture).