58 lines
1.7 KiB
ActionScript
58 lines
1.7 KiB
ActionScript
; AMD64 mpn_sub_n -- Subtract two limb vectors of the same length > 0 and
|
|
; store difference in a third limb vector.
|
|
;
|
|
; Copyright 2004 Free Software Foundation, Inc.
|
|
;
|
|
; Copyright 2008 William Hart
|
|
;
|
|
; 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.
|
|
;
|
|
; cycles/limb
|
|
; Hammer: 3.0
|
|
;
|
|
;
|
|
; INPUT PARAMETERS
|
|
; rp rdi
|
|
; up rsi
|
|
; vp rdx
|
|
; n rcx
|
|
|
|
%include '../yasm_mac.inc'
|
|
|
|
BITS 64
|
|
|
|
GLOBAL_FUNC mpn_sub_n
|
|
lea rsi, [rsi+rcx*8]
|
|
lea rdi, [rdi+rcx*8]
|
|
lea rdx, [rdx+rcx*8]
|
|
neg rcx
|
|
xor eax, eax ; clear cy
|
|
|
|
align 4 ; minimal alignment for claimed speed
|
|
loop1: ; do the subtraction in a loop
|
|
mov rax, [rsi+rcx*8]
|
|
mov r10, [rdx+rcx*8]
|
|
sbb rax, r10
|
|
mov [rdi+rcx*8], rax
|
|
inc rcx
|
|
jne loop1
|
|
|
|
mov rax, rcx ; zero rax
|
|
adc rax, rax ; return borrow
|
|
ret
|