mpir/mpn/x86_64w/sandybridge/submul_1.asm

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2012-11-25 17:13:44 -05:00
; PROLOGUE(submul_1)
; Copyright 2011 The Code Cavern
;
; 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.
;
; mp_limb_t mpn_submul_1(mp_ptr, mp_ptr, mp_size_t, mp_limb_t)
; mp_limb_t mpn_declsh_n(mp_ptr, mp_ptr, mp_size_t, mp_uint)
; rax rdi rsi rdx rcx
; rax rcx rdx r8 r9
%include "yasm_mac.inc"
CPU Athlon64
BITS 64
%define reg_save_list rsi, rdi, r12
xalign 16
LEAF_PROC mpn_submul_1
mov rax, [rdx]
cmp r8, 1
jnz .1
mul r9
sub [rcx], rax
adc rdx, 0
mov rax, rdx
ret
xalign 16
.1: FRAME_PROC ?mpn_sandybridge_submul, 0, reg_save_list
mov r11, 5
lea rsi, [rdx+r8*8-40]
lea rdi, [rcx+r8*8-40]
mov rcx, r9
sub r11, r8
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], r12
db 0x26
jge .3
.2: xor r10, r10
mul rcx
sub [rdi+r11*8], r8
adc r9, rax
adc r10, rdx
mov rax, [rsi+r11*8+16]
mul rcx
sub [rdi+r11*8+8], r9
adc r10, rax
mov r12d, 0
adc r12, rdx
mov rax, [rsi+r11*8+24]
xor r8, r8
xor r9, r9
mul rcx
sub [rdi+r11*8+16], r10
adc r12, rax
adc r8, rdx
mov rax, [rsi+r11*8+32]
mul rcx
sub [rdi+r11*8+24], r12
adc r8, rax
adc r9, rdx
add r11, 4
mov rax, [rsi+r11*8+8]
jnc .2
.3: xor r10, r10
mul rcx
sub [rdi+r11*8], r8
adc r9, rax
adc r10, rdx
cmp r11, 2
ja .7
jz .6
jp .5
.4: mov rax, [rsi+16]
mul rcx
sub [rdi+8], r9
adc r10, rax
mov r12d, 0
adc r12, rdx
mov rax, [rsi+24]
xor r8, r8
xor r9, r9
mul rcx
sub [rdi+16], r10
adc r12, rax
adc r8, rdx
mov rax, [rsi+32]
mul rcx
sub [rdi+24], r12
adc r8, rax
adc r9, rdx
sub [rdi+32], r8
adc r9, 0
mov rax, r9
EXIT_PROC reg_save_list
.5: mov rax, [rsi+24]
mul rcx
sub [rdi+16], r9
adc r10, rax
mov r12d, 0
adc r12, rdx
mov rax, [rsi+32]
xor r8, r8
mul rcx
sub [rdi+24], r10
adc r12, rax
adc r8, rdx
sub [rdi+32], r12
adc r8, 0
mov rax, r8
EXIT_PROC reg_save_list
align 16
.6: mov rax, [rsi+32]
mul rcx
sub [rdi+24], r9
adc r10, rax
mov r12d, 0
adc r12, rdx
sub [rdi+32], r10
adc r12, 0
mov rax, r12
EXIT_PROC reg_save_list
.7: sub [rdi+32], r9
adc r10, 0
mov rax, r10
END_PROC reg_save_list
end