Would you recommend implementing this as a helper? It seems rather complex. Especially with half-word and byte arithmetic. On the other hand the instructions using this are common and would benefit from open-coding it in TCG.+ tcg_gen_addi_tl(cpu_gpr_d[r1], cpu_gpr_d[r1], const4);Are you planning to come back to implement V and AV bits later?
Thanks, Bastian
