66 lines
1.9 KiB
ArmAsm
66 lines
1.9 KiB
ArmAsm
|
/* AMD64 mul_1 -- Multiply a limb vector with a limb and store
|
||
|
|
* the result in a second limb vector.
|
||
|
|
* Copyright (C) 1992, 1994, 1998,
|
||
|
|
* 2001, 2002, 2006 Free Software Foundation, Inc.
|
||
|
|
*
|
||
|
|
* This file is part of Libgcrypt.
|
||
|
|
*
|
||
|
|
* Libgcrypt 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.
|
||
|
|
*
|
||
|
|
* Libgcrypt 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 this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
|
||
|
|
*
|
||
|
|
* Note: This code is heavily based on the GNU MP Library.
|
||
|
|
* Actually it's the same code with only minor changes in the
|
||
|
|
* way the data is stored; this is to support the abstraction
|
||
|
|
* of an optional secure memory allocation which may be used
|
||
|
|
* to avoid revealing of sensitive data due to paging etc.
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#include "sysdep.h"
|
||
|
|
#include "asm-syntax.h"
|
||
|
|
|
||
|
|
/*******************
|
||
|
|
* mpi_limb_t
|
||
|
|
* _gcry_mpih_mul_1( mpi_ptr_t res_ptr, (rdi)
|
||
|
|
* mpi_ptr_t s1_ptr, (rsi)
|
||
|
|
* mpi_size_t s1_size, (rdx)
|
||
|
|
* mpi_limb_t s2_limb) (rcx)
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
TEXT
|
||
|
|
ALIGN(5)
|
||
|
|
.byte 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
|
||
|
|
|
||
|
|
GLOBL C_SYMBOL_NAME(_gcry_mpih_mul_1)
|
||
|
|
C_SYMBOL_NAME(_gcry_mpih_mul_1:)
|
||
|
|
|
||
|
|
movq %rdx, %r11
|
||
|
|
leaq (%rsi,%rdx,8), %rsi
|
||
|
|
leaq (%rdi,%rdx,8), %rdi
|
||
|
|
negq %r11
|
||
|
|
xorl %r8d, %r8d
|
||
|
|
|
||
|
|
.Loop: movq (%rsi,%r11,8), %rax
|
||
|
|
mulq %rcx
|
||
|
|
addq %r8, %rax
|
||
|
|
movl $0, %r8d
|
||
|
|
adcq %rdx, %r8
|
||
|
|
movq %rax, (%rdi,%r11,8)
|
||
|
|
incq %r11
|
||
|
|
jne .Loop
|
||
|
|
|
||
|
|
movq %r8, %rax
|
||
|
|
ret
|