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dnl AMD K7 mpn_mul_1.
dnl Copyright 1999-2002, 2005, 2008 Free Software Foundation, 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 cycles/limb
C P5
C P6 model 0-8,10-12)
C P6 model 9 (Banias)
C P6 model 13 (Dothan)
C P4 model 0 (Willamette)
C P4 model 1 (?)
C P4 model 2 (Northwood)
C P4 model 3 (Prescott)
C P4 model 4 (Nocona)
C AMD K6
C AMD K7 3.25
C AMD K8
C TODO
C * Improve feed-in and wind-down code. We beat the old code for all n != 1,
C but we might be able to do even better.
C * The feed-in code for mul_1c is crude.
ASM_START()
TEXT
ALIGN(16)
PROLOGUE(mpn_mul_1c)
add $-16, %esp
mov %ebp, (%esp)
mov %ebx, 4(%esp)
mov %esi, 8(%esp)
mov %edi, 12(%esp)
mov 20(%esp), %edi
mov 24(%esp), %esi
mov 28(%esp), %ebp
mov 32(%esp), %ecx
mov %ebp, %ebx
shr $2, %ebp
mov %ebp, 28(%esp)
mov (%esi), %eax
and $3, %ebx
jz L(c0)
cmp $2, %ebx
mov 36(%esp), %ebx
jz L(c2)
jg L(c3)
L(c1): lea -4(%edi), %edi
mul %ecx
test %ebp, %ebp
jnz 1f
add %ebx, %eax
mov %eax, 4(%edi)
mov %edx, %eax
adc %ebp, %eax
jmp L(rt)
1: add %eax, %ebx
mov $0, %ebp
adc %edx, %ebp
mov 4(%esi), %eax
jmp L(1)
L(c2): lea 4(%esi), %esi
mul %ecx
test %ebp, %ebp
mov %ebx, %ebp
jnz 2f
add %eax, %ebp
mov $0, %ebx
adc %edx, %ebx
mov (%esi), %eax
jmp L(cj2)
2: add %eax, %ebp
mov $0, %ebx
adc %edx, %ebx
mov (%esi), %eax
jmp L(2)
L(c3): lea 8(%esi), %esi
lea -12(%edi), %edi
mul %ecx
add %eax, %ebx
mov $0, %ebp
adc %edx, %ebp
mov -4(%esi), %eax
incl 28(%esp)
jmp L(3)
L(c0): mov 36(%esp), %ebx
lea -4(%esi), %esi
lea -8(%edi), %edi
mul %ecx
mov %ebx, %ebp
add %eax, %ebp
mov $0, %ebx
adc %edx, %ebx
mov 8(%esi), %eax
jmp L(0)
EPILOGUE()
ALIGN(16)
PROLOGUE(mpn_mul_1)
add $-16, %esp
mov %ebp, (%esp)
mov %ebx, 4(%esp)
mov %esi, 8(%esp)
mov %edi, 12(%esp)
mov 20(%esp), %edi
mov 24(%esp), %esi
mov 28(%esp), %ebp
mov 32(%esp), %ecx
mov %ebp, %ebx
shr $2, %ebp
mov %ebp, 28(%esp)
mov (%esi), %eax
and $3, %ebx
jz L(b0)
cmp $2, %ebx
jz L(b2)
jg L(b3)
L(b1): lea -4(%edi), %edi
mul %ecx
test %ebp, %ebp
jnz L(gt1)
mov %eax, 4(%edi)
mov %edx, %eax
jmp L(rt)
L(gt1): mov %eax, %ebx
mov %edx, %ebp
mov 4(%esi), %eax
jmp L(1)
L(b2): lea 4(%esi), %esi
mul %ecx
test %ebp, %ebp
mov %eax, %ebp
mov %edx, %ebx
mov (%esi), %eax
jnz L(2)
jmp L(cj2)
L(b3): lea 8(%esi), %esi
lea -12(%edi), %edi
mul %ecx
mov %eax, %ebx
mov %edx, %ebp
mov -4(%esi), %eax
incl 28(%esp)
jmp L(3)
L(b0): lea -4(%esi), %esi
lea -8(%edi), %edi
mul %ecx
mov %eax, %ebp
mov %edx, %ebx
mov 8(%esi), %eax
jmp L(0)
ALIGN(16)
L(top): mov $0, %ebx
adc %edx, %ebx
L(2): mul %ecx
add %eax, %ebx
mov %ebp, 0(%edi)
mov 4(%esi), %eax
mov $0, %ebp
adc %edx, %ebp
L(1): mul %ecx
add %eax, %ebp
mov 8(%esi), %eax
mov %ebx, 4(%edi)
mov $0, %ebx
adc %edx, %ebx
L(0): mov %ebp, 8(%edi)
mul %ecx
add %eax, %ebx
mov 12(%esi), %eax
lea 16(%esi), %esi
mov $0, %ebp
adc %edx, %ebp
L(3): mov %ebx, 12(%edi)
mul %ecx
lea 16(%edi), %edi
add %eax, %ebp
decl 28(%esp)
mov 0(%esi), %eax
jnz L(top)
L(end): mov $0, %ebx
adc %edx, %ebx
L(cj2): mul %ecx
add %eax, %ebx
mov %ebp, (%edi)
L(cj1): mov %ebx, 4(%edi)
adc $0, %edx
mov %edx, %eax
L(rt): mov (%esp), %ebp
mov 4(%esp), %ebx
mov 8(%esp), %esi
mov 12(%esp), %edi
add $16, %esp
ret
EPILOGUE()
ASM_END()
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