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dnl AMD64 mpn_mod_1_1p
dnl Contributed to the GNU project by Torbjorn Granlund.
dnl Copyright 2009, 2010 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 3 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. If not, see http://www.gnu.org/licenses/.
include(`../config.m4')
C cycles/limb
C AMD K8,K9 7
C AMD K10 7
C Intel P4 27
C Intel core2 14
C Intel corei 12.5
C Intel atom 37
C VIA nano 15
ASM_START()
TEXT
ALIGN(16)
PROLOGUE(mpn_mod_1_1p)
push %rbp
push %rbx
mov %rdx, %rbp
mov %rcx, %rbx
mov 16(%rcx), %r10
mov 24(%rcx), %r11
mov -8(%rdi,%rsi,8), %rax
mul %r10
mov -16(%rdi,%rsi,8), %r9
xor R32(%r8), R32(%r8)
add %r9, %rax
adc %rdx, %r8
sub $3, %rsi
js L(2)
ALIGN(16)
L(top): mul %r10 C 1 15
xor R32(%r9), R32(%r9) C
mov (%rdi,%rsi,8), %rcx C
add %rax, %rcx C 5 19
mov %r8, %rax C 0 16
adc %rdx, %r9 C 6 20
mul %r11 C 3 17
add %rcx, %rax C 7 21
nop
adc %rdx, %r9 C 8 22
sub $1, %rsi C
js L(end) C
mul %r10 C 8 22
xor R32(%r8), R32(%r8) C
mov (%rdi,%rsi,8), %rcx C
add %rax, %rcx C 12 26
mov %r9, %rax C 9 23
adc %rdx, %r8 C 13 27
mul %r11 C 10 24
add %rcx, %rax C 14 28
nop
adc %rdx, %r8 C 15 29
sub $1, %rsi C
jns L(top) C
jmp L(2)
L(end): mov %r9, %r8
L(2):
mov %rax, %r9
mov (%rbx), %rsi
mov 8(%rbx), R32(%rdi)
test R32(%rdi), R32(%rdi)
je L(4)
mov %r8, %rax
mov R32(%rdi), R32(%rcx)
sal %cl, %rax
mov %r9, %r8
sal %cl, %r9
neg R32(%rcx)
shr %cl, %r8
or %rax, %r8
L(4):
mov %r8, %rax
sub %rbp, %r8
cmovc %rax, %r8
mov %r8, %rax
mul %rsi
mov %rax, %rbx
mov %r9, %rsi
lea 1(%r8), %rax
add %rsi, %rbx
adc %rax, %rdx
mov %rbp, %rax
imul %rdx, %rax
sub %rax, %rsi
mov %rsi, %rax
lea (%rsi,%rbp), %rdx
cmp %rsi, %rbx
cmovb %rdx, %rax
mov %rax, %rdx
sub %rbp, %rdx
cmp %rbp, %rax
cmovae %rdx, %rax
mov R32(%rdi), R32(%rcx)
shr %cl, %rax
pop %rbx
pop %rbp
ret
EPILOGUE()
ALIGN(16)
PROLOGUE(mpn_mod_1_1p_cps)
mov %rbx, -24(%rsp)
mov %rbp, -16(%rsp)
mov %r12, -8(%rsp)
sub $24, %rsp
mov %rdi, %r12
bsr %rsi, %rax
mov R32(%rax), R32(%rbx)
xor $63, R32(%rbx)
mov %rsi, %rbp
mov R32(%rbx), R32(%rcx)
sal %cl, %rbp
mov %rbp, %rdi
CALL( mpn_invert_limb)
mov %rax, %rdi
test R32(%rbx), R32(%rbx)
jne L(11)
mov %rbp, %rsi
neg %rsi
jmp L(12)
L(11):
xor R32(%rcx), R32(%rcx)
sub R32(%rbx), R32(%rcx)
mov %rax, %rsi
shr %cl, %rsi
mov $1, R32(%rax)
mov R32(%rbx), R32(%rcx)
sal %cl, %rax
or %rax, %rsi
mov %rbp, %rax
neg %rax
imul %rax, %rsi
L(12):
mov %rsi, %rax
mul %rdi
mov %rax, %rcx
add %rsi, %rdx
not %rdx
imul %rbp, %rdx
lea (%rdx,%rbp), %rax
cmp %rdx, %rcx
cmovb %rax, %rdx
mov %rdi, (%r12)
mov R32(%rbx), 8(%r12)
mov R32(%rbx), R32(%rcx)
shr %cl, %rsi
mov %rsi, 16(%r12)
shr %cl, %rdx
mov %rdx, 24(%r12)
mov (%rsp), %rbx
mov 8(%rsp), %rbp
mov 16(%rsp), %r12
add $24, %rsp
ret
EPILOGUE()
ASM_END()
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