diff options
Diffstat (limited to 'REORG.TODO/sysdeps/sparc/sparc32/mul_1.S')
| -rw-r--r-- | REORG.TODO/sysdeps/sparc/sparc32/mul_1.S | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/sparc/sparc32/mul_1.S b/REORG.TODO/sysdeps/sparc/sparc32/mul_1.S new file mode 100644 index 0000000000..8f7cd752a4 --- /dev/null +++ b/REORG.TODO/sysdeps/sparc/sparc32/mul_1.S @@ -0,0 +1,198 @@ +! SPARC __mpn_mul_1 -- Multiply a limb vector with a limb and store +! the result in a second limb vector. +! +! Copyright (C) 1992-2017 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 Lesser General Public License as published by +! the Free Software Foundation; either version 2.1 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 Lesser General Public +! License for more details. +! +! You should have received a copy of the GNU Lesser General Public License +! along with the GNU MP Library; see the file COPYING.LIB. If not, +! see <http://www.gnu.org/licenses/>. + + +! INPUT PARAMETERS +! RES_PTR o0 +! S1_PTR o1 +! SIZE o2 +! S2_LIMB o3 + +! ADD CODE FOR SMALL MULTIPLIERS! +!1: ld +! st +! +!2: ld ,a +! addxcc a,a,x +! st x, +! +!3_unrolled: +! ld ,a +! addxcc a,a,x1 ! 2a + cy +! addx %g0,%g0,x2 +! addcc a,x1,x ! 3a + c +! st x, +! +! ld ,a +! addxcc a,a,y1 +! addx %g0,%g0,y2 +! addcc a,y1,x +! st x, +! +!4_unrolled: +! ld ,a +! srl a,2,x1 ! 4a +! addxcc y2,x1,x +! sll a,30,x2 +! st x, +! +! ld ,a +! srl a,2,y1 +! addxcc x2,y1,y +! sll a,30,y2 +! st x, +! +!5_unrolled: +! ld ,a +! srl a,2,x1 ! 4a +! addxcc a,x1,x ! 5a + c +! sll a,30,x2 +! addx %g0,x2,x2 +! st x, +! +! ld ,a +! srl a,2,y1 +! addxcc a,y1,x +! sll a,30,y2 +! addx %g0,y2,y2 +! st x, +! +!8_unrolled: +! ld ,a +! srl a,3,x1 ! 8a +! addxcc y2,x1,x +! sll a,29,x2 +! st x, +! +! ld ,a +! srl a,3,y1 +! addxcc x2,y1,y +! sll a,29,y2 +! st x, + +#include <sysdep.h> + +ENTRY(__mpn_mul_1) + ! Make S1_PTR and RES_PTR point at the end of their blocks + ! and put (- 4 x SIZE) in index/loop counter. + sll %o2,2,%o2 + add %o0,%o2,%o4 ! RES_PTR in o4 since o0 is retval + add %o1,%o2,%o1 + sub %g0,%o2,%o2 + + cmp %o3,0xfff + bgu LOC(large) + nop + + ld [%o1+%o2],%o5 + mov 0,%o0 + b LOC(0) + add %o4,-4,%o4 +LOC(loop0): + st %g1,[%o4+%o2] +LOC(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 ! add sign-compensation and cy to hi limb + addcc %o2,4,%o2 ! loop counter + bne,a LOC(loop0) + ld [%o1+%o2],%o5 + + retl + st %g1,[%o4+%o2] + + +LOC(large): + ld [%o1+%o2],%o5 + mov 0,%o0 + sra %o3,31,%g4 ! g4 = mask of ones iff S2_LIMB < 0 + b LOC(1) + add %o4,-4,%o4 +LOC(loop): + st %g3,[%o4+%o2] +LOC(1): wr %g0,%o5,%y + and %o5,%g4,%g2 ! 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 ! add sign-compensation and cy to hi limb + addcc %o2,4,%o2 ! loop counter + bne,a LOC(loop) + ld [%o1+%o2],%o5 + + retl + st %g3,[%o4+%o2] + +END(__mpn_mul_1) |