mpir/mpn/x86_64w/amd64/addlsh1_n.asm

98 lines
2.3 KiB
NASM

; AMD64 mpn_addlsh1_n
; Version 1.0.3
;
; Copyright 2008 Jason Moxham
;
; Windows Conversion Copyright 2008 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.
;
; Calling interface:
;
; rcx[r9] = rdx[r9] + 2 * r8[r9]
;
; void __gmpn_addlsh1_n(
; mp_ptr rp, rcx
; mp_srcptr xp, rdx
; mp_srcptr yp, r8
; mp_size_t n, r9
; )
;
; This is an SEH frame function
%include "..\yasm_mac.inc"
%define reg_save_list rbx, rsi, rdi
BITS 64
FRAME_PROC mpn_addlsh1_n, 0, reg_save_list
movsxd r9, r9d
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
inc r9
test r9, 3
jnz .1
.2: cmp r9, 0
jz .4
alignb 16, nop
.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