mul_1.asm
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上传日期:2022-08-06
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- dnl x86 mpn_mul_1 (for 386, 486, and Pentium Pro) -- Multiply a limb vector
- dnl with a limb and store the result in a second limb vector.
- dnl Copyright 1992, 1994, 1997, 1998, 1999, 2000, 2001, 2002, 2005 Free
- dnl Software Foundation, Inc.
- dnl
- 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
- dnl modify it under the terms of the GNU Lesser General Public License as
- dnl published by the Free Software Foundation; either version 3 of the
- dnl License, or (at your option) any later version.
- dnl
- dnl The GNU MP Library is distributed in the hope that it will be useful,
- dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
- dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- dnl Lesser General Public License for more details.
- dnl
- dnl You should have received a copy of the GNU Lesser General Public License
- dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/.
- include(`../config.m4')
- C cycles/limb
- C P5: 12.5
- C P6 model 0-8,10-12) 5.5
- C P6 model 9 (Banias)
- C P6 model 13 (Dothan) 5.25
- C P4 model 0 (Willamette) 19.0
- C P4 model 1 (?) 19.0
- C P4 model 2 (Northwood) 19.0
- C P4 model 3 (Prescott)
- C P4 model 4 (Nocona)
- C K6: 10.5
- C K7: 4.5
- C K8:
- C mp_limb_t mpn_mul_1 (mp_ptr dst, mp_srcptr src, mp_size_t size,
- C mp_limb_t multiplier);
- defframe(PARAM_MULTIPLIER,16)
- defframe(PARAM_SIZE, 12)
- defframe(PARAM_SRC, 8)
- defframe(PARAM_DST, 4)
- TEXT
- ALIGN(8)
- PROLOGUE(mpn_mul_1)
- deflit(`FRAME',0)
- pushl %edi
- pushl %esi
- pushl %ebx
- pushl %ebp
- deflit(`FRAME',16)
- movl PARAM_DST,%edi
- movl PARAM_SRC,%esi
- movl PARAM_SIZE,%ecx
- xorl %ebx,%ebx
- andl $3,%ecx
- jz L(end0)
- L(oop0):
- movl (%esi),%eax
- mull PARAM_MULTIPLIER
- leal 4(%esi),%esi
- addl %ebx,%eax
- movl $0,%ebx
- adcl %ebx,%edx
- movl %eax,(%edi)
- movl %edx,%ebx C propagate carry into cylimb
- leal 4(%edi),%edi
- decl %ecx
- jnz L(oop0)
- L(end0):
- movl PARAM_SIZE,%ecx
- shrl $2,%ecx
- jz L(end)
- ALIGN(8)
- L(oop): movl (%esi),%eax
- mull PARAM_MULTIPLIER
- addl %eax,%ebx
- movl $0,%ebp
- adcl %edx,%ebp
- movl 4(%esi),%eax
- mull PARAM_MULTIPLIER
- movl %ebx,(%edi)
- addl %eax,%ebp C new lo + cylimb
- movl $0,%ebx
- adcl %edx,%ebx
- movl 8(%esi),%eax
- mull PARAM_MULTIPLIER
- movl %ebp,4(%edi)
- addl %eax,%ebx C new lo + cylimb
- movl $0,%ebp
- adcl %edx,%ebp
- movl 12(%esi),%eax
- mull PARAM_MULTIPLIER
- movl %ebx,8(%edi)
- addl %eax,%ebp C new lo + cylimb
- movl $0,%ebx
- adcl %edx,%ebx
- movl %ebp,12(%edi)
- leal 16(%esi),%esi
- leal 16(%edi),%edi
- decl %ecx
- jnz L(oop)
- L(end): movl %ebx,%eax
- popl %ebp
- popl %ebx
- popl %esi
- popl %edi
- ret
- EPILOGUE()