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dnl AMD64 mpn_mod_1s_2p
dnl Contributed to the GNU project by Torbjorn Granlund.
dnl Copyright 2009, 2010, 2011 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 4
C AMD K10 4
C Intel P4 19
C Intel core2 8
C Intel NHM 6.5
C Intel SBR 4.5
C Intel atom 28
C VIA nano 8
C ABI_SUPPORT(DOS64)
C ABI_SUPPORT(ELF64)
ASM_START()
TEXT
ALIGN(16)
PROLOGUE(mpn_mod_1s_2p)
DOS64_ENTRY(4)
push %r14
test $1, R8(%rsi)
mov %rdx, %r14
push %r13
mov %rcx, %r13
push %r12
push %rbp
push %rbx
mov 16(%rcx), %r10
mov 24(%rcx), %rbx
mov 32(%rcx), %rbp
je L(b0)
dec %rsi
je L(one)
mov -8(%rdi,%rsi,8), %rax
mul %r10
mov %rax, %r9
mov %rdx, %r8
mov (%rdi,%rsi,8), %rax
add -16(%rdi,%rsi,8), %r9
adc $0, %r8
mul %rbx
add %rax, %r9
adc %rdx, %r8
jmp L(11)
L(b0): mov -8(%rdi,%rsi,8), %r8
mov -16(%rdi,%rsi,8), %r9
L(11): sub $4, %rsi
jb L(ed2)
lea 40(%rdi,%rsi,8), %rdi
mov -40(%rdi), %r11
mov -32(%rdi), %rax
jmp L(m0)
ALIGN(16)
L(top): mov -24(%rdi), %r9
add %rax, %r11
mov -16(%rdi), %rax
adc %rdx, %r12
mul %r10
add %rax, %r9
mov %r11, %rax
mov %rdx, %r8
adc $0, %r8
mul %rbx
add %rax, %r9
mov %r12, %rax
adc %rdx, %r8
mul %rbp
sub $2, %rsi
jb L(ed1)
mov -40(%rdi), %r11
add %rax, %r9
mov -32(%rdi), %rax
adc %rdx, %r8
L(m0): mul %r10
add %rax, %r11
mov %r9, %rax
mov %rdx, %r12
adc $0, %r12
mul %rbx
add %rax, %r11
lea -32(%rdi), %rdi C ap -= 4
mov %r8, %rax
adc %rdx, %r12
mul %rbp
sub $2, %rsi
jae L(top)
L(ed0): mov %r11, %r9
mov %r12, %r8
L(ed1): add %rax, %r9
adc %rdx, %r8
L(ed2): mov 8(%r13), R32(%rdi) C cnt
mov %r8, %rax
mov %r9, %r8
mul %r10
add %rax, %r8
adc $0, %rdx
L(1): xor R32(%rcx), R32(%rcx)
mov %r8, %r9
sub R32(%rdi), R32(%rcx)
shr R8(%rcx), %r9
mov R32(%rdi), R32(%rcx)
sal R8(%rcx), %rdx
or %rdx, %r9
sal R8(%rcx), %r8
mov %r9, %rax
mulq (%r13)
mov %rax, %rsi
inc %r9
add %r8, %rsi
adc %r9, %rdx
imul %r14, %rdx
sub %rdx, %r8
lea (%r8,%r14), %rax
cmp %r8, %rsi
cmovc %rax, %r8
mov %r8, %rax
sub %r14, %rax
cmovc %r8, %rax
mov R32(%rdi), R32(%rcx)
shr R8(%rcx), %rax
pop %rbx
pop %rbp
pop %r12
pop %r13
pop %r14
DOS64_EXIT()
ret
L(one):
mov (%rdi), %r8
mov 8(%rcx), R32(%rdi)
xor %rdx, %rdx
jmp L(1)
EPILOGUE()
PROLOGUE(mpn_mod_1s_2p_cps)
DOS64_ENTRY(2)
push %rbp
bsr %rsi, %rcx
push %rbx
mov %rdi, %rbx
push %r12
xor $63, R32(%rcx)
mov %rsi, %r12
mov R32(%rcx), R32(%rbp) C preserve cnt over call
sal R8(%rcx), %r12 C b << cnt
mov %r12, %rdi C pass parameter
CALL( mpn_invert_limb)
mov %r12, %r8
mov %rax, %r11
mov %rax, (%rbx) C store bi
mov %rbp, 8(%rbx) C store cnt
neg %r8
mov R32(%rbp), R32(%rcx)
mov $1, R32(%rsi)
ifdef(`SHLD_SLOW',`
shl R8(%rcx), %rsi
neg R32(%rcx)
mov %rax, %rbp
shr R8(%rcx), %rax
or %rax, %rsi
mov %rbp, %rax
neg R32(%rcx)
',`
shld R8(%rcx), %rax, %rsi C FIXME: Slow on Atom and Nano
')
imul %r8, %rsi
mul %rsi
add %rsi, %rdx
shr R8(%rcx), %rsi
mov %rsi, 16(%rbx) C store B1modb
not %rdx
imul %r12, %rdx
lea (%rdx,%r12), %rsi
cmp %rdx, %rax
cmovnc %rdx, %rsi
mov %r11, %rax
mul %rsi
add %rsi, %rdx
shr R8(%rcx), %rsi
mov %rsi, 24(%rbx) C store B2modb
not %rdx
imul %r12, %rdx
add %rdx, %r12
cmp %rdx, %rax
cmovnc %rdx, %r12
shr R8(%rcx), %r12
mov %r12, 32(%rbx) C store B3modb
pop %r12
pop %rbx
pop %rbp
DOS64_EXIT()
ret
EPILOGUE()
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