mpir/mpn/x86_64/nehalem/addlsh1_n.as

79 lines
1.9 KiB
ActionScript

; core2 mpn_addlsh1_n
; Copyright 2008 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.
%include 'yasm_mac.inc'
; (rdi, rcx) = (rsi, rcx) + (rdx, rcx)<<1
; rax = carry
BITS 64
GLOBAL_FUNC mpn_addlsh1_n
lea rsi, [rsi+rcx*8]
lea rdx, [rdx+rcx*8]
lea rdi, [rdi+rcx*8]
neg rcx
xor r9, r9
xor rax, rax
test rcx, 3
jz next
lp1:
mov r10, [rdx+rcx*8]
add r9, 1
adc r10, r10
sbb r9, r9
add rax, 1
adc r10, [rsi+rcx*8]
sbb rax, rax
mov [rdi+rcx*8], r10
add rcx, 1
test rcx, 3
jnz lp1
next:
cmp rcx, 0
jz end
push rbx
align 16
lp:
mov r10, [rdx+rcx*8]
mov rbx, [rdx+rcx*8+8]
mov r11, [rdx+rcx*8+16]
mov r8, [rdx+rcx*8+24]
add r9, 1
adc r10, r10
adc rbx, rbx
adc r11, r11
adc r8, r8
sbb r9, r9
add rax, 1
adc r10, [rsi+rcx*8]
adc rbx, [rsi+rcx*8+8]
adc r11, [rsi+rcx*8+16]
adc r8, [rsi+rcx*8+24]
sbb rax, rax
mov [rdi+rcx*8], r10
mov [rdi+rcx*8+8], rbx
mov [rdi+rcx*8+16], r11
mov [rdi+rcx*8+24], r8
add rcx, 4
jnz lp
pop rbx
end:
add rax, r9
neg rax
ret