mpir/mpn/x86_64w/skylake/mul_2.asm

148 lines
4.0 KiB
NASM

; PROLOGUE(mpn_mul_2)
; X86_64 mpn_mul_2
;
; Copyright 2010 Jason Moxham
;
; Windows Conversion Copyright 2010 Brian Gladman
;
; This file is part of the MPIR Library.
; The MPIR Library is free software; you can redistribute it and/or modify
; it under the terms of the GNU Lesser General Public License as published
; by the Free Software Foundation; either version 2.1 of the License, or (at
; your option) any later version.
; The MPIR Library is distributed in the hope that it will be useful, but
; WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
; License for more details.
; You should have received a copy of the GNU Lesser General Public License
; along with the MPIR Library; see the file COPYING.LIB. If not, write
; to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
; Boston, MA 02110-1301, USA.
;
; mp_limb_t mpn_mul_2(mp_ptr, mp_ptr, mp_size_t, mp_limb_t)
; rax rdi rsi rdx rcx
; rax rcx rdx r8 r9
%include "yasm_mac.inc"
%define reg_save_list rsi, rdi, rbx
CPU nehalem
BITS 64
FRAME_PROC mpn_mul_2, 0, reg_save_list
mov rbx, 3
lea rdi, [rcx+r8*8-24]
lea rsi, [rdx+r8*8-24]
sub rbx, r8
mov r8, [r9+8]
mov rcx, [r9]
mov r11, 0
mov r9, 0
mov rax, [rsi+rbx*8]
mov r10, 0
mul rcx
add r11, rax
mov rax, [rsi+rbx*8]
mov [rdi+rbx*8], r11
adc r9, rdx
cmp rbx, 0
jge .2
align 16
.1: mul r8
add r9, rax
adc r10, rdx
mov rax, [rsi+rbx*8+8]
mov r11, 0
mul rcx
add r9, rax
adc r10, rdx
adc r11, 0
mov rax, [rsi+rbx*8+8]
mul r8
add r10, rax
mov rax, [rsi+rbx*8+16]
adc r11, rdx
mul rcx
add r10, rax
mov [rdi+rbx*8+8], r9
adc r11, rdx
mov r9, 0
mov rax, [rsi+rbx*8+16]
adc r9, 0
mul r8
add r11, rax
mov [rdi+rbx*8+16], r10
mov rax, [rsi+rbx*8+24]
mov r10, 0
adc r9, rdx
mul rcx
add r11, rax
mov rax, [rsi+rbx*8+24]
mov [rdi+rbx*8+24], r11
adc r9, rdx
adc r10, 0
add rbx, 3
jnc .1
.2: cmp rbx, 1
ja .5
je .4
.3: mul r8
add r9, rax
adc r10, rdx
mov rax, [rsi+rbx*8+8]
mov r11, 0
mul rcx
add r9, rax
adc r10, rdx
adc r11, 0
mov rax, [rsi+rbx*8+8]
mul r8
add r10, rax
mov rax, [rsi+rbx*8+16]
adc r11, rdx
mul rcx
add r10, rax
mov [rdi+rbx*8+8], r9
adc r11, rdx
mov r9, 0
mov rax, [rsi+rbx*8+16]
adc r9, 0
mul r8
add r11, rax
mov [rdi+rbx*8+16], r10
adc r9, rdx
mov [rdi+rbx*8+24], r11
mov rax, r9
EXIT_PROC reg_save_list
.4: mul r8
add r9, rax
adc r10, rdx
mov rax, [rsi+rbx*8+8]
mov r11, 0
mul rcx
add r9, rax
adc r10, rdx
adc r11, 0
mov rax, [rsi+rbx*8+8]
mul r8
add r10, rax
adc r11, rdx
mov [rdi+rbx*8+8], r9
mov [rdi+rbx*8+16], r10
mov rax, r11
EXIT_PROC reg_save_list
.5: mul r8
add r9, rax
adc r10, rdx
mov [rdi+rbx*8+8], r9
mov rax, r10
END_PROC reg_save_list
end