diff options
Diffstat (limited to 'libotr/libgcrypt-1.8.7/mpi/amd64/mpih-mul1.S')
| -rw-r--r-- | libotr/libgcrypt-1.8.7/mpi/amd64/mpih-mul1.S | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/libotr/libgcrypt-1.8.7/mpi/amd64/mpih-mul1.S b/libotr/libgcrypt-1.8.7/mpi/amd64/mpih-mul1.S new file mode 100644 index 0000000..67ab47e --- /dev/null +++ b/libotr/libgcrypt-1.8.7/mpi/amd64/mpih-mul1.S @@ -0,0 +1,67 @@ +/* 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:) + + FUNC_ENTRY() + 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 + FUNC_EXIT() + ret |