diff options
Diffstat (limited to 'sysdeps/m88k/m88110')
| -rw-r--r-- | sysdeps/m88k/m88110/mul_1.s | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/sysdeps/m88k/m88110/mul_1.s b/sysdeps/m88k/m88110/mul_1.s new file mode 100644 index 0000000000..08c3ca07ee --- /dev/null +++ b/sysdeps/m88k/m88110/mul_1.s @@ -0,0 +1,84 @@ +; mc88110 __mpn_mul_1 -- Multiply a limb vector with a single limb and +; store the product in a second limb vector. + +; Copyright (C) 1992, 1994 Free Software Foundation, Inc. + +; This file is part of the GNU MP Library. + +; The GNU MP Library is free software; you can redistribute it and/or modify +; it under the terms of the GNU Library General Public License as published by +; the Free Software Foundation; either version 2 of the License, or (at your +; option) any later version. + +; The GNU MP Library is distributed in the hope that it will be useful, but +; WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public +; License for more details. + +; You should have received a copy of the GNU Library General Public License +; along with the GNU MP Library; see the file COPYING.LIB. If not, write to +; the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + +; INPUT PARAMETERS +; res_ptr r2 +; s1_ptr r3 +; size r4 +; s2_limb r5 + + text + align 16 + global ___mpn_mul_1 +___mpn_mul_1: + ; Make S1_PTR and RES_PTR point at the end of their blocks + ; and negate SIZE. + lda r3,r3[r4] + lda r8,r2[r4] ; RES_PTR in r8 since r2 is retval + subu r4,r0,r4 + + addu.co r2,r0,r0 ; r2 = cy = 0 + + ld r6,r3[r4] + addu r4,r4,1 + mulu.d r10,r6,r5 + bcnd.n eq0,r4,Lend + subu r8,r8,8 + +Loop: ld r6,r3[r4] + addu.cio r9,r11,r2 + or r2,r10,r0 ; could be avoided if unrolled + addu r4,r4,1 + mulu.d r10,r6,r5 + bcnd.n ne0,r4,Loop + st r9,r8[r4] + +Lend: addu.cio r9,r11,r2 + st r9,r8,4 + jmp.n r1 + addu.ci r2,r10,r0 + +; This is the Right Way to do this on '110. 4 cycles / 64-bit limb. +; ld.d r10, +; mulu.d +; addu.cio +; addu.cio +; st.d +; mulu.d ,r11,r5 +; ld.d r12, +; mulu.d ,r10,r5 +; addu.cio +; addu.cio +; st.d +; mulu.d +; ld.d r10, +; mulu.d +; addu.cio +; addu.cio +; st.d +; mulu.d +; ld.d r10, +; mulu.d +; addu.cio +; addu.cio +; st.d +; mulu.d |