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104 lines
2.3 KiB
ArmAsm
104 lines
2.3 KiB
ArmAsm
! SPARC v8 __mpn_mul_1 -- Multiply a limb vector with a single limb and
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! store the product in a second limb vector.
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! Copyright (C) 1992, 1994, 1995 Free Software Foundation, Inc.
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! This file is part of the GNU MP Library.
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! The GNU MP Library is free software; you can redistribute it and/or modify
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! it under the terms of the GNU Lesser General Public License as published by
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! the Free Software Foundation; either version 2.1 of the License, or (at your
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! option) any later version.
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! The GNU MP Library is distributed in the hope that it will be useful, but
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! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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! or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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! License for more details.
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! You should have received a copy of the GNU Lesser General Public License
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! along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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! the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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! MA 02111-1307, USA.
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! INPUT PARAMETERS
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! res_ptr o0
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! s1_ptr o1
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! size o2
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! s2_limb o3
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#include <sysdep.h>
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ENTRY(__mpn_mul_1)
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sll %o2,4,%g1
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mov %o7,%g4 ! Save return address register
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and %g1,(4-1)<<4,%g1
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1: call 2f
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add %o7,3f-1b,%g3
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2: mov %g4,%o7 ! Restore return address register
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jmp %g3+%g1
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ld [%o1+0],%o4 ! 1
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.align 4
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3:
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LOC(00):
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add %o0,-4,%o0
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add %o1,-4,%o1
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b LOC(loop00) /* 4, 8, 12, ... */
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orcc %g0,%g0,%g2
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LOC(01):
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b LOC(loop01) /* 1, 5, 9, ... */
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orcc %g0,%g0,%g2
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nop
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nop
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LOC(10):
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add %o0,-12,%o0 /* 2, 6, 10, ... */
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add %o1,4,%o1
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b LOC(loop10)
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orcc %g0,%g0,%g2
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nop
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LOC(11):
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add %o0,-8,%o0 /* 3, 7, 11, ... */
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add %o1,-8,%o1
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b LOC(loop11)
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orcc %g0,%g0,%g2
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LOC(loop):
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addcc %g3,%g2,%g3 ! 1
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ld [%o1+4],%o4 ! 2
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st %g3,[%o0+0] ! 1
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rd %y,%g2 ! 1
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LOC(loop00):
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umul %o4,%o3,%g3 ! 2
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addxcc %g3,%g2,%g3 ! 2
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ld [%o1+8],%o4 ! 3
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st %g3,[%o0+4] ! 2
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rd %y,%g2 ! 2
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LOC(loop11):
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umul %o4,%o3,%g3 ! 3
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addxcc %g3,%g2,%g3 ! 3
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ld [%o1+12],%o4 ! 4
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add %o1,16,%o1
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st %g3,[%o0+8] ! 3
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rd %y,%g2 ! 3
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LOC(loop10):
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umul %o4,%o3,%g3 ! 4
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addxcc %g3,%g2,%g3 ! 4
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ld [%o1+0],%o4 ! 1
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st %g3,[%o0+12] ! 4
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add %o0,16,%o0
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rd %y,%g2 ! 4
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addx %g0,%g2,%g2
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LOC(loop01):
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addcc %o2,-4,%o2
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bg LOC(loop)
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umul %o4,%o3,%g3 ! 1
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addcc %g3,%g2,%g3 ! 4
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st %g3,[%o0+0] ! 4
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rd %y,%g2 ! 4
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retl
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addx %g0,%g2,%o0
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END(__mpn_mul_1)
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