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dnl SPARC 64-bit mull -- Helper for mpn_mul_1.
dnl Copyright (C) 1998, 2000 Free Software Foundation, Inc.
dnl This file is part of the GNU MP Library.
dnl The GNU MP Library is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU Lesser General Public License as published
dnl by the Free Software Foundation; either version 2.1 of the License, or (at
dnl your option) any later version.
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 Lesser General Public
dnl License for more details.
dnl You should have received a copy of the GNU Lesser General Public License
dnl along with the GNU MP Library; see the file COPYING.LIB. If not, write to
dnl the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
dnl MA 02111-1307, USA.
mull:
save %sp,-256,%sp
sethi %hi(0xffff0000),%o0
andn %i3,%o0,%o0
st %o0,[%fp-17]
ld [%fp-17],%f11
fxtod %f10,%f6
srl %i3,16,%o0
st %o0,[%fp-17]
ld [%fp-17],%f11
fxtod %f10,%f8
mov 0,%g3 C cy = 0
ld [%i1+4],%f11
subcc %i2,1,%i2
dnl be,pn %icc,E(end1)
add %i1,4,%i1 C s1_ptr++
fxtod %f10,%f2
ld [%i1-4],%f11
add %i1,4,%i1 C s1_ptr++
fmuld %f2,%f8,%f16
fmuld %f2,%f6,%f4
fdtox %f16,%f14
std %f14,[%fp-25]
fdtox %f4,%f12
subcc %i2,1,%i2
be,pn %icc,E(end2)
std %f12,[%fp-17]
fxtod %f10,%f2
ld [%i1+4],%f11
add %i1,4,%i1 C s1_ptr++
fmuld %f2,%f8,%f16
fmuld %f2,%f6,%f4
fdtox %f16,%f14
std %f14,[%fp-41]
fdtox %f4,%f12
subcc %i2,1,%i2
dnl be,pn %icc,E(end3)
std %f12,[%fp-33]
fxtod %f10,%f2
ld [%i1-4],%f11
add %i1,4,%i1 C s1_ptr++
ldx [%fp-25],%g2 C p16
fmuld %f2,%f8,%f16
ldx [%fp-17],%g1 C p0
fmuld %f2,%f6,%f4
sllx %g2,16,%g2 C align p16
fdtox %f16,%f14
add %g2,%g1,%g1 C add p16 to p0 (ADD1)
std %f14,[%fp-25]
fdtox %f4,%f12
add %i0,4,%i0 C res_ptr++
subcc %i2,1,%i2
be,pn %icc,E(end4)
std %f12,[%fp-17]
b,a E(loop)
nop C nop is cheap to nullify
ALIGN(16)
C BEGIN LOOP
E(loop):
fxtod %f10,%f2
ld [%i1+4],%f11
add %i1,4,%i1 C s1_ptr++
add %g3,%g1,%g4 C p += cy
srlx %g4,32,%g3
ldx [%fp-41],%g2 C p16
fmuld %f2,%f8,%f16
ldx [%fp-33],%g1 C p0
fmuld %f2,%f6,%f4
sllx %g2,16,%g2 C align p16
st %g4,[%i0-4+DLO]
fdtox %f16,%f14
add %g2,%g1,%g1 C add p16 to p0 (ADD1)
std %f14,[%fp-41]
fdtox %f4,%f12
std %f12,[%fp-33]
sub %i2,2,%i2
add %i0,4,%i0 C res_ptr++
fxtod %f10,%f2
ld [%i1-4],%f11
add %i1,4,%i1 C s1_ptr++
add %g3,%g1,%g4 C p += cy
srlx %g4,32,%g3
ldx [%fp-25],%g2 C p16
fmuld %f2,%f8,%f16
ldx [%fp-17],%g1 C p0
fmuld %f2,%f6,%f4
sllx %g2,16,%g2 C align p16
st %g4,[%i0-4+DHI]
fdtox %f16,%f14
add %g2,%g1,%g1 C add p16 to p0 (ADD1)
std %f14,[%fp-25]
fdtox %f4,%f12
std %f12,[%fp-17]
brnz,pt %i2,E(loop)
add %i0,4,%i0 C res_ptr++
C END LOOP
E(loope):
E(end4):
fxtod %f10,%f2
add %g3,%g1,%g4 C p += cy
srlx %g4,32,%g3
ldx [%fp-41],%g2 C p16
fmuld %f2,%f8,%f16
ldx [%fp-33],%g1 C p0
fmuld %f2,%f6,%f4
sllx %g2,16,%g2 C align p16
st %g4,[%i0-4+DLO]
fdtox %f16,%f14
add %g2,%g1,%g1 C add p16 to p0 (ADD1)
std %f14,[%fp-41]
fdtox %f4,%f12
std %f12,[%fp-33]
add %i0,4,%i0 C res_ptr++
add %g3,%g1,%g4 C p += cy
srlx %g4,32,%g3
ldx [%fp-25],%g2 C p16
ldx [%fp-17],%g1 C p0
sllx %g2,16,%g2 C align p16
st %g4,[%i0-4+DHI]
b,a E(yyy)
E(end2):
fxtod %f10,%f2
fmuld %f2,%f8,%f16
fmuld %f2,%f6,%f4
fdtox %f16,%f14
std %f14,[%fp-41]
fdtox %f4,%f12
std %f12,[%fp-33]
ldx [%fp-25],%g2 C p16
ldx [%fp-17],%g1 C p0
sllx %g2,16,%g2 C align p16
E(yyy): add %g2,%g1,%g1 C add p16 to p0 (ADD1)
add %i0,4,%i0 C res_ptr++
add %g3,%g1,%g4 C p += cy
srlx %g4,32,%g3
ldx [%fp-41],%g2 C p16
ldx [%fp-33],%g1 C p0
sllx %g2,16,%g2 C align p16
st %g4,[%i0-4+DLO]
add %g2,%g1,%g1 C add p16 to p0 (ADD1)
add %i0,4,%i0 C res_ptr++
add %g3,%g1,%g4 C p += cy
st %g4,[%i0-4+DHI]
srlx %g4,32,%g4
ret
restore %g0,%g4,%o0 C sideeffect: put cy in retreg
EPILOGUE(mull)
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