104 lines
2.5 KiB
NASM
104 lines
2.5 KiB
NASM
|
|
||
|
|
; X86_64 mpn_divrem_euclidean_1
|
||
|
|
;
|
||
|
|
; 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:
|
||
|
|
;
|
||
|
|
; dst[] = src[] / f
|
||
|
|
;
|
||
|
|
; mp_limb_tmpn_divexact_byBm1of (
|
||
|
|
; mp_ptr dst, rcx
|
||
|
|
; mp_srcptr src, rdx
|
||
|
|
; mp_size_t len, r8
|
||
|
|
; mp_limb_t f r9
|
||
|
|
; mp_limb_t bm1of [rsp + 0x28] = 1 / f
|
||
|
|
; )
|
||
|
|
;
|
||
|
|
; This is an SEH frame function
|
||
|
|
;
|
||
|
|
; This function "replaces" divrem_1 mod_1
|
||
|
|
|
||
|
|
%include "yasm_mac.inc"
|
||
|
|
|
||
|
|
%define reg_save_list rsi, rdi, rbp, r12, r13, r14, r15
|
||
|
|
|
||
|
|
BITS 64
|
||
|
|
|
||
|
|
FRAME_PROC mpn_divrem_euclidean_qr_1, 0, reg_save_list
|
||
|
|
mov rdi, rcx
|
||
|
|
mov rsi, rdx
|
||
|
|
movsxd r14, r8d
|
||
|
|
|
||
|
|
xor r15, r15
|
||
|
|
bsr rcx, r9
|
||
|
|
xor rcx, 63
|
||
|
|
shl r9, cl
|
||
|
|
xor r11, r11
|
||
|
|
|
||
|
|
mov rdx, r9
|
||
|
|
not rdx
|
||
|
|
xor rax, rax
|
||
|
|
not rax
|
||
|
|
div r9
|
||
|
|
mov r8, rax
|
||
|
|
xor rax, rax
|
||
|
|
xor rbp, rbp
|
||
|
|
|
||
|
|
align 16
|
||
|
|
.1: mov r13, [rsi+r14*8-8]
|
||
|
|
mov r12, r13
|
||
|
|
neg rcx
|
||
|
|
cmovnc r13, r15
|
||
|
|
shr r13, cl
|
||
|
|
neg rcx
|
||
|
|
shl r12, cl
|
||
|
|
mov r10, r12
|
||
|
|
sar r10, 63
|
||
|
|
add rax, r13
|
||
|
|
sub rax, r10
|
||
|
|
add rax, r11
|
||
|
|
add r11, r13
|
||
|
|
add r11, rbp
|
||
|
|
mul r8
|
||
|
|
mov r13, r11
|
||
|
|
and r10, r9
|
||
|
|
add r10, r12
|
||
|
|
add rax, r10
|
||
|
|
mov r10, r11
|
||
|
|
adc r10, rdx
|
||
|
|
not r10
|
||
|
|
mov rax, r9
|
||
|
|
mul r10
|
||
|
|
sub r13, r9
|
||
|
|
add rax, r12
|
||
|
|
mov r11, r9
|
||
|
|
adc rdx, r13
|
||
|
|
and r11, rdx
|
||
|
|
mov rbp, rax
|
||
|
|
sub rdx, r10
|
||
|
|
mov [rdi+r14*8-8], rdx
|
||
|
|
dec r14
|
||
|
|
jnz .1
|
||
|
|
add r11, rax
|
||
|
|
shr r11, cl
|
||
|
|
mov rax, r11
|
||
|
|
END_PROC reg_save_list
|
||
|
|
|
||
|
|
end
|