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dnl AMD64 mpn_mod_1s_4p
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 3
C AMD K10 3
C Intel P4 15.5
C Intel core2 5
C Intel corei 4
C Intel atom 23
C VIA nano 4.75
C ABI_SUPPORT(DOS64)
C ABI_SUPPORT(ELF64)
ASM_START()
TEXT
ALIGN(16)
PROLOGUE(mpn_mod_1s_4p)
DOS64_ENTRY(4)
push %r15
push %r14
push %r13
push %r12
push %rbp
push %rbx
mov %rdx, %r15
mov %rcx, %r14
mov 16(%rcx), %r11 C B1modb
mov 24(%rcx), %rbx C B2modb
mov 32(%rcx), %rbp C B3modb
mov 40(%rcx), %r13 C B4modb
mov 48(%rcx), %r12 C B5modb
xor R32(%r8), R32(%r8)
mov R32(%rsi), R32(%rdx)
and $3, R32(%rdx)
je L(b0)
cmp $2, R32(%rdx)
jc L(b1)
je L(b2)
L(b3): lea -24(%rdi,%rsi,8), %rdi
mov 8(%rdi), %rax
mul %r11
mov (%rdi), %r9
add %rax, %r9
adc %rdx, %r8
mov 16(%rdi), %rax
mul %rbx
jmp L(m0)
ALIGN(8)
L(b0): lea -32(%rdi,%rsi,8), %rdi
mov 8(%rdi), %rax
mul %r11
mov (%rdi), %r9
add %rax, %r9
adc %rdx, %r8
mov 16(%rdi), %rax
mul %rbx
add %rax, %r9
adc %rdx, %r8
mov 24(%rdi), %rax
mul %rbp
jmp L(m0)
ALIGN(8)
L(b1): lea -8(%rdi,%rsi,8), %rdi
mov (%rdi), %r9
jmp L(m1)
ALIGN(8)
L(b2): lea -16(%rdi,%rsi,8), %rdi
mov 8(%rdi), %r8
mov (%rdi), %r9
jmp L(m1)
ALIGN(16)
L(top): mov -24(%rdi), %rax
mov -32(%rdi), %r10
mul %r11 C up[1] * B1modb
add %rax, %r10
mov -16(%rdi), %rax
mov $0, R32(%rcx)
adc %rdx, %rcx
mul %rbx C up[2] * B2modb
add %rax, %r10
mov -8(%rdi), %rax
adc %rdx, %rcx
sub $32, %rdi
mul %rbp C up[3] * B3modb
add %rax, %r10
mov %r13, %rax
adc %rdx, %rcx
mul %r9 C rl * B4modb
add %rax, %r10
mov %r12, %rax
adc %rdx, %rcx
mul %r8 C rh * B5modb
mov %r10, %r9
mov %rcx, %r8
L(m0): add %rax, %r9
adc %rdx, %r8
L(m1): sub $4, %rsi
ja L(top)
L(end): mov 8(%r14), R32(%rsi)
mov %r8, %rax
mul %r11
mov %rax, %r8
add %r9, %r8
adc $0, %rdx
xor R32(%rcx), R32(%rcx)
sub R32(%rsi), R32(%rcx)
mov %r8, %rdi
shr R8(%rcx), %rdi
mov R32(%rsi), R32(%rcx)
sal R8(%rcx), %rdx
or %rdx, %rdi
mov %rdi, %rax
mulq (%r14)
mov %r15, %rbx
mov %rax, %r9
sal R8(%rcx), %r8
inc %rdi
add %r8, %r9
adc %rdi, %rdx
imul %rbx, %rdx
sub %rdx, %r8
lea (%r8,%rbx), %rax
cmp %r8, %r9
cmovc %rax, %r8
mov %r8, %rax
sub %rbx, %rax
cmovc %r8, %rax
shr R8(%rcx), %rax
pop %rbx
pop %rbp
pop %r12
pop %r13
pop %r14
DOS64_EXIT()
ret
EPILOGUE()
ALIGN(16)
PROLOGUE(mpn_mod_1s_4p_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
lea (%rdx,%r12), %rsi
cmp %rdx, %rax
cmovnc %rdx, %rsi
mov %r11, %rax
mul %rsi
add %rsi, %rdx
shr R8(%rcx), %rsi
mov %rsi, 32(%rbx) C store B3modb
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, 40(%rbx) C store B4modb
not %rdx
imul %r12, %rdx
add %rdx, %r12
cmp %rdx, %rax
cmovnc %rdx, %r12
shr R8(%rcx), %r12
mov %r12, 48(%rbx) C store B5modb
pop %r12
pop %rbx
pop %rbp
DOS64_EXIT()
ret
EPILOGUE()
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