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dnl Intel Pentium mpn_addmul_1 -- mpn by limb multiplication.
dnl Copyright 1992, 1994, 1996, 1999, 2000, 2002 Free Software Foundation,
dnl Inc.
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 modify
dnl it under the terms of either:
dnl
dnl * the GNU Lesser General Public License as published by the Free
dnl Software Foundation; either version 3 of the License, or (at your
dnl option) any later version.
dnl
dnl or
dnl
dnl * the GNU General Public License as published by the Free Software
dnl Foundation; either version 2 of the License, or (at your option) any
dnl later version.
dnl
dnl or both in parallel, as here.
dnl
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 General Public License
dnl for more details.
dnl
dnl You should have received copies of the GNU General Public License and the
dnl GNU Lesser General Public License along with the GNU MP Library. If not,
dnl see https://www.gnu.org/licenses/.
include(`../config.m4')
C P5: 14.0 cycles/limb
ifdef(`OPERATION_addmul_1', `
define(M4_inst, addl)
define(M4_function_1, mpn_addmul_1)
define(M4_function_1c, mpn_addmul_1c)
',`ifdef(`OPERATION_submul_1', `
define(M4_inst, subl)
define(M4_function_1, mpn_submul_1)
define(M4_function_1c, mpn_submul_1c)
',`m4_error(`Need OPERATION_addmul_1 or OPERATION_submul_1
')')')
MULFUNC_PROLOGUE(mpn_addmul_1 mpn_addmul_1c mpn_submul_1 mpn_submul_1c)
C mp_limb_t mpn_addmul_1 (mp_ptr dst, mp_srcptr src, mp_size_t size,
C mp_limb_t mult);
C mp_limb_t mpn_addmul_1c (mp_ptr dst, mp_srcptr src, mp_size_t size,
C mp_limb_t mult, mp_limb_t carry);
C
C mp_limb_t mpn_submul_1 (mp_ptr dst, mp_srcptr src, mp_size_t size,
C mp_limb_t mult);
C mp_limb_t mpn_submul_1c (mp_ptr dst, mp_srcptr src, mp_size_t size,
C mp_limb_t mult, mp_limb_t carry);
C
defframe(PARAM_CARRY, 20)
defframe(PARAM_MULTIPLIER,16)
defframe(PARAM_SIZE, 12)
defframe(PARAM_SRC, 8)
defframe(PARAM_DST, 4)
TEXT
ALIGN(8)
PROLOGUE(M4_function_1c)
deflit(`FRAME',0)
movl PARAM_CARRY, %ecx
pushl %esi FRAME_pushl()
jmp L(start_1c)
EPILOGUE()
ALIGN(8)
PROLOGUE(M4_function_1)
deflit(`FRAME',0)
xorl %ecx, %ecx
pushl %esi FRAME_pushl()
L(start_1c):
movl PARAM_SRC, %esi
movl PARAM_SIZE, %eax
pushl %edi FRAME_pushl()
pushl %ebx FRAME_pushl()
movl PARAM_DST, %edi
leal -1(%eax), %ebx C size-1
leal (%esi,%eax,4), %esi
xorl $-1, %ebx C -size, and clear carry
leal (%edi,%eax,4), %edi
L(top):
C eax
C ebx counter, negative
C ecx carry
C edx
C esi src end
C edi dst end
C ebp
adcl $0, %ecx
movl (%esi,%ebx,4), %eax
mull PARAM_MULTIPLIER
addl %ecx, %eax
movl (%edi,%ebx,4), %ecx
adcl $0, %edx
M4_inst %eax, %ecx
movl %ecx, (%edi,%ebx,4)
incl %ebx
movl %edx, %ecx
jnz L(top)
adcl $0, %ecx
popl %ebx
movl %ecx, %eax
popl %edi
popl %esi
ret
EPILOGUE()
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