nx_ktest.nx

nx_ktest.nx -- R1 probe: what does nx_cc emit for a freestanding-style kernel function? kpoke writes bytes to a caller-passed pointer (a "framebuffer") using only pointer stores + arithmetic -- NO syscalls. This is the shape a compiled bare-metal kernel body would take (draw to a framebuffer the boot stub hands it). We compile this and inspect kpoke's asm to learn the calling convention + the exact x86-64 instructions nx_cc generates.