O0
#define r_SKB O0
emit_reg_move(r_A, O0); /* delay slot */
emit_reg_move(O0, bpf2sparc[BPF_REG_0], ctx);
[BPF_REG_1] = O0,
emit_reg_move(I0, O0, ctx);
emit(RESTORE | RS1(bpf2sparc[BPF_REG_0]) | RS2(G0) | RD(O0), ctx);