mpir/mpn/x86_64w/core2/addlsh1_n.asm

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; Copyright 2008 Jason Moxham
;
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; This file is part of the MPIR Library.
;
; Windows Conversion Copyright 2008 Brian Gladman
;
; 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.
;
2009-09-02 13:20:55 -04:00
; mp_limb_t mpn_addlsh1_n(mp_ptr, mp_ptr, mp_ptr, mp_size_t)
; rax rdi rsi rdx rcx
; rax rcx rdx r8 r9
%include "yasm_mac.inc"
%define reg_save_list rbx, rsi, rdi
CPU Core2
BITS 64
FRAME_PROC mpn_addlsh1_n, 0, reg_save_list
lea rdx, [rdx+r9*8]
lea r8, [r8+r9*8]
lea rcx, [rcx+r9*8]
neg r9
xor rsi, rsi
xor rax, rax
test r9, 3
jz .2
.1: mov rdi, [r8+r9*8]
add rsi, 1
adc rdi, rdi
sbb rsi, rsi
add rax, 1
adc rdi, [rdx+r9*8]
sbb rax, rax
mov [rcx+r9*8], rdi
add r9, 1 ; ***
test r9, 3
jnz .1
.2: cmp r9, 0
jz .4
xalign 16
.3: mov rdi, [r8+r9*8]
mov rbx, [r8+r9*8+8]
mov r10, [r8+r9*8+16]
mov r11, [r8+r9*8+24]
add rsi, 1
adc rdi, rdi
adc rbx, rbx
adc r10, r10
adc r11, r11
sbb rsi, rsi
add rax, 1
adc rdi, [rdx+r9*8]
adc rbx, [rdx+r9*8+8]
adc r10, [rdx+r9*8+16]
adc r11, [rdx+r9*8+24]
sbb rax, rax
mov [rcx+r9*8], rdi
mov [rcx+r9*8+8], rbx
mov [rcx+r9*8+16], r10
mov [rcx+r9*8+24], r11
add r9, 4
jnz .3
.4: add rax, rsi
neg rax
END_PROC reg_save_list
end