diff options
Diffstat (limited to 'sysdeps/i960/add_n.s')
| -rw-r--r-- | sysdeps/i960/add_n.s | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/sysdeps/i960/add_n.s b/sysdeps/i960/add_n.s new file mode 100644 index 0000000000..6031f6d4c3 --- /dev/null +++ b/sysdeps/i960/add_n.s @@ -0,0 +1,21 @@ +.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 |