dnl SPARC mpn_mul_1 -- Multiply a limb vector with a limb and store dnl the result in a second limb vector. dnl Copyright 1992-1994, 2000 Free Software Foundation, Inc. dnl This file is part of the GNU MP Library. dnl dnl The GNU MP Library is free software; you can redistribute it and/or modify dnl it under the terms of either: dnl dnl * the GNU Lesser General Public License as published by the Free dnl Software Foundation; either version 3 of the License, or (at your dnl option) any later version. dnl dnl or dnl dnl * the GNU General Public License as published by the Free Software dnl Foundation; either version 2 of the License, or (at your option) any dnl later version. dnl dnl or both in parallel, as here. dnl dnl The GNU MP Library is distributed in the hope that it will be useful, but dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License dnl for more details. dnl dnl You should have received copies of the GNU General Public License and the dnl GNU Lesser General Public License along with the GNU MP Library. If not, dnl see https://www.gnu.org/licenses/. include(`../config.m4') C INPUT PARAMETERS C res_ptr o0 C s1_ptr o1 C size o2 C s2_limb o3 ASM_START() PROLOGUE(mpn_mul_1) C Make S1_PTR and RES_PTR point at the end of their blocks C and put (- 4 x SIZE) in index/loop counter. sll %o2,2,%o2 add %o0,%o2,%o4 C RES_PTR in o4 since o0 is retval add %o1,%o2,%o1 sub %g0,%o2,%o2 cmp %o3,0xfff bgu L(large) nop ld [%o1+%o2],%o5 mov 0,%o0 b L(0) add %o4,-4,%o4 L(loop0): st %g1,[%o4+%o2] L(0): wr %g0,%o3,%y sra %o5,31,%g2 and %o3,%g2,%g2 andcc %g1,0,%g1 mulscc %g1,%o5,%g1 mulscc %g1,%o5,%g1 mulscc %g1,%o5,%g1 mulscc %g1,%o5,%g1 mulscc %g1,%o5,%g1 mulscc %g1,%o5,%g1 mulscc %g1,%o5,%g1 mulscc %g1,%o5,%g1 mulscc %g1,%o5,%g1 mulscc %g1,%o5,%g1 mulscc %g1,%o5,%g1 mulscc %g1,%o5,%g1 mulscc %g1,0,%g1 sra %g1,20,%g4 sll %g1,12,%g1 rd %y,%g3 srl %g3,20,%g3 or %g1,%g3,%g1 addcc %g1,%o0,%g1 addx %g2,%g4,%o0 C add sign-compensation and cy to hi limb addcc %o2,4,%o2 C loop counter bne,a L(loop0) ld [%o1+%o2],%o5 retl st %g1,[%o4+%o2] L(large): ld [%o1+%o2],%o5 mov 0,%o0 sra %o3,31,%g4 C g4 = mask of ones iff S2_LIMB < 0 b L(1) add %o4,-4,%o4 L(loop): st %g3,[%o4+%o2] L(1): wr %g0,%o5,%y and %o5,%g4,%g2 C g2 = S1_LIMB iff S2_LIMB < 0, else 0 andcc %g0,%g0,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%o3,%g1 mulscc %g1,%g0,%g1 rd %y,%g3 addcc %g3,%o0,%g3 addx %g2,%g1,%o0 C add sign-compensation and cy to hi limb addcc %o2,4,%o2 C loop counter bne,a L(loop) ld [%o1+%o2],%o5 retl st %g3,[%o4+%o2] EPILOGUE(mpn_mul_1)