mpir/mpn/x86_64/k8/addmul_1.as

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; AMD64 mpn_addmul_1
; Copyright 2008,2009 Jason Moxham
; 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.
; (rdi,rdx) = (rdi,rdx)+(rsi,rdx)*rcx
; rax = carry
%include 'yasm_mac.inc'
BITS 64
GLOBAL_FUNC mpn_addmul_1
mov rax, [rsi]
cmp rdx, 1
je one
mov r11, 5
lea rsi, [rsi+rdx*8-40]
lea rdi, [rdi+rdx*8-40]
sub r11, rdx
mul rcx
db 0x26
mov r8, rax
db 0x26
mov rax, [rsi+r11*8+8]
db 0x26
mov r9, rdx
db 0x26
cmp r11, 0
db 0x26
mov [rsp-8], rbx
db 0x26
jge skiploop
align 16
loop1:
mov r10, 0
mul rcx
add [rdi+r11*8], r8
adc r9, rax
db 0x26
adc r10, rdx
mov rax, [rsi+r11*8+16]
mul rcx
add [rdi+r11*8+8], r9
adc r10, rax
mov ebx, 0
adc rbx, rdx
mov rax, [rsi+r11*8+24]
mov r8, 0
mov r9, 0
mul rcx
add [rdi+r11*8+16], r10
db 0x26
adc rbx, rax
db 0x26
adc r8, rdx
mov rax, [rsi+r11*8+32]
mul rcx
add [rdi+r11*8+24], rbx
db 0x26
adc r8, rax
db 0x26
adc r9, rdx
add r11, 4
mov rax, [rsi+r11*8+8]
jnc loop1
align 16
skiploop:
mov r10d, 0
mul rcx
add [rdi+r11*8], r8
adc r9, rax
adc r10, rdx
cmp r11, 2
jz next2
ja next3
jp next1
next0:
mov rax, [rsi+r11*8+16]
mul rcx
add [rdi+r11*8+8], r9
adc r10, rax
mov ebx, 0
adc rbx, rdx
mov rax, [rsi+r11*8+24]
mov r8d, 0
mul rcx
add [rdi+r11*8+16], r10
adc rbx, rax
adc r8, rdx
mov rax, [rsi+r11*8+32]
mul rcx
add [rdi+r11*8+24], rbx
mov rbx, [rsp-8]
adc r8, rax
adc rdx, 0
add [rdi+r11*8+32], r8
adc rdx, 0
mov rax, rdx
ret
align 16
next1:
mov rax, [rsi+r11*8+16]
mul rcx
add [rdi+r11*8+8], r9
adc r10, rax
mov r8d, 0
adc r8, rdx
mov rax, [rsi+r11*8+24]
mul rcx
add [rdi+r11*8+16], r10
adc r8, rax
adc rdx, 0
add [rdi+r11*8+24], r8
mov rbx, [rsp-8]
adc rdx, 0
mov rax, rdx
ret
align 16
one:
mul rcx
add [rdi], rax
adc rdx, 0
mov rax, rdx
ret
align 16
next2:
mov rax, [rsi+r11*8+16]
mul rcx
add [rdi+r11*8+8], r9
adc r10, rax
mov ebx, 0
adc rbx, rdx
add [rdi+r11*8+16], r10
adc rbx, 0
mov rax, rbx
mov rbx, [rsp-8]
ret
align 16
next3:
mov rbx, [rsp-8]
add [rdi+r11*8+8], r9
adc r10, 0
mov rax, r10
ret