.text .align 4 .globl ___mpn_add_n ___mpn_add_n: mov 0,g6 # clear carry-save register cmpo 1,0 # clear cy Loop: subo 1,g3,g3 # update loop counter ld (g1),g5 # load from s1_ptr addo 4,g1,g1 # s1_ptr++ ld (g2),g4 # load from s2_ptr addo 4,g2,g2 # s2_ptr++ cmpo g6,1 # restore cy from g6, relies on cy being 0 addc g4,g5,g4 # main add subc 0,0,g6 # save cy in g6 st g4,(g0) # store result to res_ptr addo 4,g0,g0 # res_ptr++ cmpobne 0,g3,Loop # when branch is taken, clears C bit mov g6,g0 ret