diff options
Diffstat (limited to 'sysdeps/i960')
| -rw-r--r-- | sysdeps/i960/add_n.s | 21 | ||||
| -rw-r--r-- | sysdeps/i960/addmul_1.s | 26 | ||||
| -rw-r--r-- | sysdeps/i960/mul_1.s | 23 | ||||
| -rw-r--r-- | sysdeps/i960/sub_n.s | 21 |
4 files changed, 91 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 diff --git a/sysdeps/i960/addmul_1.s b/sysdeps/i960/addmul_1.s new file mode 100644 index 0000000000..1a3de95e50 --- /dev/null +++ b/sysdeps/i960/addmul_1.s @@ -0,0 +1,26 @@ +.text + .align 4 + .globl ___mpn_mul_1 +___mpn_mul_1: + subo g2,0,g2 + shlo 2,g2,g4 + subo g4,g1,g1 + subo g4,g0,g13 + mov 0,g0 + + cmpo 1,0 # clear C bit on AC.cc + +Loop: ld (g1)[g2*4],g5 + emul g3,g5,g6 + ld (g13)[g2*4],g5 + + addc g0,g6,g6 # relies on that C bit is clear + addc 0,g7,g7 + addc g5,g6,g6 # relies on that C bit is clear + st g6,(g13)[g2*4] + addc 0,g7,g0 + + addo g2,1,g2 + cmpobne 0,g2,Loop # when branch is taken, clears C bit + + ret diff --git a/sysdeps/i960/mul_1.s b/sysdeps/i960/mul_1.s new file mode 100644 index 0000000000..e75ea42d39 --- /dev/null +++ b/sysdeps/i960/mul_1.s @@ -0,0 +1,23 @@ +.text + .align 4 + .globl ___mpn_mul_1 +___mpn_mul_1: + subo g2,0,g2 + shlo 2,g2,g4 + subo g4,g1,g1 + subo g4,g0,g13 + mov 0,g0 + + cmpo 1,0 # clear C bit on AC.cc + +Loop: ld (g1)[g2*4],g5 + emul g3,g5,g6 + + addc g0,g6,g6 # relies on that C bit is clear + st g6,(g13)[g2*4] + addc 0,g7,g0 + + addo g2,1,g2 + cmpobne 0,g2,Loop # when branch is taken, clears C bit + + ret diff --git a/sysdeps/i960/sub_n.s b/sysdeps/i960/sub_n.s new file mode 100644 index 0000000000..13ebbfa9f2 --- /dev/null +++ b/sysdeps/i960/sub_n.s @@ -0,0 +1,21 @@ +.text + .align 4 + .globl ___mpn_sub_n +___mpn_sub_n: + mov 1,g6 # set 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 + subc g4,g5,g4 # main subtract + 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, cy will be 0 + + mov g6,g0 + ret |