193 lines
4.4 KiB
NASM
193 lines
4.4 KiB
NASM
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dnl HP-PA 7100/7200 mpn_addmul_1 -- Multiply a limb vector with a limb and
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dnl add the result to a second limb vector.
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dnl Copyright 1995, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
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dnl This file is part of the GNU MP Library.
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dnl The GNU MP Library is free software; you can redistribute it and/or modify
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dnl it under the terms of the GNU Lesser General Public License as published
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dnl by the Free Software Foundation; either version 2.1 of the License, or (at
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dnl your option) any later version.
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dnl The GNU MP Library is distributed in the hope that it will be useful, but
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dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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dnl License for more details.
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dnl You should have received a copy of the GNU Lesser General Public License
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dnl along with the GNU MP Library; see the file COPYING.LIB. If not, write
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dnl to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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dnl Boston, MA 02110-1301, USA.
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include(`../config.m4')
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C INPUT PARAMETERS
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define(`res_ptr',`%r26')
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define(`s1_ptr',`%r25')
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define(`size_param',`%r24')
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define(`s2_limb',`%r23')
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define(`cylimb',`%r28')
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define(`s0',`%r19')
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define(`s1',`%r20')
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define(`s2',`%r3')
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define(`s3',`%r4')
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define(`lo0',`%r21')
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define(`lo1',`%r5')
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define(`lo2',`%r6')
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define(`lo3',`%r7')
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define(`hi0',`%r22')
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define(`hi1',`%r23') C safe to reuse
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define(`hi2',`%r29')
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define(`hi3',`%r1')
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ASM_START()
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PROLOGUE(mpn_addmul_1)
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C .callinfo frame=128,no_calls
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ldo 128(%r30),%r30
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stws s2_limb,-16(%r30)
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add %r0,%r0,cylimb C clear cy and cylimb
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addib,< -4,size_param,L(few_limbs)
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fldws -16(%r30),%fr31R
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ldo -112(%r30),%r31
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stw %r3,-96(%r30)
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stw %r4,-92(%r30)
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stw %r5,-88(%r30)
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stw %r6,-84(%r30)
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stw %r7,-80(%r30)
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bb,>=,n s1_ptr,29,L(0)
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fldws,ma 4(s1_ptr),%fr4
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ldws 0(res_ptr),s0
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xmpyu %fr4,%fr31R,%fr5
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fstds %fr5,-16(%r31)
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ldws -16(%r31),cylimb
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ldws -12(%r31),lo0
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add s0,lo0,s0
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addib,< -1,size_param,L(few_limbs)
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stws,ma s0,4(res_ptr)
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C start software pipeline ----------------------------------------------------
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LDEF(0)
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fldds,ma 8(s1_ptr),%fr4
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fldds,ma 8(s1_ptr),%fr8
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xmpyu %fr4L,%fr31R,%fr5
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xmpyu %fr4R,%fr31R,%fr6
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xmpyu %fr8L,%fr31R,%fr9
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xmpyu %fr8R,%fr31R,%fr10
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fstds %fr5,-16(%r31)
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fstds %fr6,-8(%r31)
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fstds %fr9,0(%r31)
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fstds %fr10,8(%r31)
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ldws -16(%r31),hi0
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ldws -12(%r31),lo0
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ldws -8(%r31),hi1
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ldws -4(%r31),lo1
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ldws 0(%r31),hi2
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ldws 4(%r31),lo2
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ldws 8(%r31),hi3
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ldws 12(%r31),lo3
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addc lo0,cylimb,lo0
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addc lo1,hi0,lo1
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addc lo2,hi1,lo2
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addc lo3,hi2,lo3
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addib,< -4,size_param,L(end)
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addc %r0,hi3,cylimb C propagate carry into cylimb
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C main loop ------------------------------------------------------------------
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LDEF(loop)
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fldds,ma 8(s1_ptr),%fr4
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fldds,ma 8(s1_ptr),%fr8
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ldws 0(res_ptr),s0
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xmpyu %fr4L,%fr31R,%fr5
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ldws 4(res_ptr),s1
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xmpyu %fr4R,%fr31R,%fr6
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ldws 8(res_ptr),s2
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xmpyu %fr8L,%fr31R,%fr9
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ldws 12(res_ptr),s3
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xmpyu %fr8R,%fr31R,%fr10
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fstds %fr5,-16(%r31)
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add s0,lo0,s0
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fstds %fr6,-8(%r31)
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addc s1,lo1,s1
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fstds %fr9,0(%r31)
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addc s2,lo2,s2
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fstds %fr10,8(%r31)
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addc s3,lo3,s3
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ldws -16(%r31),hi0
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ldws -12(%r31),lo0
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ldws -8(%r31),hi1
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ldws -4(%r31),lo1
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ldws 0(%r31),hi2
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ldws 4(%r31),lo2
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ldws 8(%r31),hi3
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ldws 12(%r31),lo3
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addc lo0,cylimb,lo0
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stws,ma s0,4(res_ptr)
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addc lo1,hi0,lo1
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stws,ma s1,4(res_ptr)
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addc lo2,hi1,lo2
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stws,ma s2,4(res_ptr)
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addc lo3,hi2,lo3
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stws,ma s3,4(res_ptr)
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addib,>= -4,size_param,L(loop)
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addc %r0,hi3,cylimb C propagate carry into cylimb
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C finish software pipeline ---------------------------------------------------
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LDEF(end)
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ldws 0(res_ptr),s0
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ldws 4(res_ptr),s1
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ldws 8(res_ptr),s2
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ldws 12(res_ptr),s3
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add s0,lo0,s0
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stws,ma s0,4(res_ptr)
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addc s1,lo1,s1
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stws,ma s1,4(res_ptr)
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addc s2,lo2,s2
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stws,ma s2,4(res_ptr)
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addc s3,lo3,s3
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stws,ma s3,4(res_ptr)
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C restore callee-saves registers ---------------------------------------------
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ldw -96(%r30),%r3
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ldw -92(%r30),%r4
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ldw -88(%r30),%r5
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ldw -84(%r30),%r6
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ldw -80(%r30),%r7
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LDEF(few_limbs)
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addib,=,n 4,size_param,L(ret)
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LDEF(loop2)
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fldws,ma 4(s1_ptr),%fr4
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ldws 0(res_ptr),s0
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xmpyu %fr4,%fr31R,%fr5
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fstds %fr5,-16(%r30)
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ldws -16(%r30),hi0
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ldws -12(%r30),lo0
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addc lo0,cylimb,lo0
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addc %r0,hi0,cylimb
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add s0,lo0,s0
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stws,ma s0,4(res_ptr)
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addib,<> -1,size_param,L(loop2)
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nop
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LDEF(ret)
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addc %r0,cylimb,cylimb
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bv 0(%r2)
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ldo -128(%r30),%r30
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EPILOGUE(mpn_addmul_1)
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