1/* AMD64 addmul2 -- Multiply a limb vector with a limb and add 2 * the result to a second limb vector. 3 * 4 * Copyright (C) 1992, 1994, 1998, 5 * 2001, 2002, 2006 Free Software Foundation, Inc. 6 * 7 * This file is part of Libgcrypt. 8 * 9 * Libgcrypt is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU Lesser General Public License as 11 * published by the Free Software Foundation; either version 2.1 of 12 * the License, or (at your option) any later version. 13 * 14 * Libgcrypt is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU Lesser General Public License for more details. 18 * 19 * You should have received a copy of the GNU Lesser General Public 20 * License along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA 22 * 23 * Note: This code is heavily based on the GNU MP Library. 24 * Actually it's the same code with only minor changes in the 25 * way the data is stored; this is to support the abstraction 26 * of an optional secure memory allocation which may be used 27 * to avoid revealing of sensitive data due to paging etc. 28 */ 29 30 31#include "sysdep.h" 32#include "asm-syntax.h" 33 34 35/******************* 36 * mpi_limb_t 37 * _gcry_mpih_addmul_2( mpi_ptr_t res_ptr, (sp + 4) 38 * mpi_ptr_t s1_ptr, (sp + 8) 39 * mpi_size_t s1_size, (sp + 12) 40 * mpi_limb_t s2_limb) (sp + 16) 41 */ 42 43 /* i80386 addmul_1 -- Multiply a limb vector with a limb and add 44 * the result to a second limb vector. 45 * 46 * Copyright (C) 1992, 1994, 1998, 47 * 2001, 2002 Free Software Foundation, Inc. 48 * 49 * This file is part of Libgcrypt. 50 * 51 * Libgcrypt is free software; you can redistribute it and/or modify 52 * it under the terms of the GNU Lesser General Public License as 53 * published by the Free Software Foundation; either version 2.1 of 54 * the License, or (at your option) any later version. 55 * 56 * Libgcrypt is distributed in the hope that it will be useful, 57 * but WITHOUT ANY WARRANTY; without even the implied warranty of 58 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 59 * GNU Lesser General Public License for more details. 60 * 61 * You should have received a copy of the GNU Lesser General Public 62 * License along with this program; if not, write to the Free Software 63 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA 64 * 65 * Note: This code is heavily based on the GNU MP Library. 66 * Actually it's the same code with only minor changes in the 67 * way the data is stored; this is to support the abstraction 68 * of an optional secure memory allocation which may be used 69 * to avoid revealing of sensitive data due to paging etc. 70 */ 71 72 73#include "sysdep.h" 74#include "asm-syntax.h" 75 76 77/******************* 78 * mpi_limb_t 79 * _gcry_mpih_addmul_1( mpi_ptr_t res_ptr, (rdi) 80 * mpi_ptr_t s1_ptr, (rsi) 81 * mpi_size_t s1_size, (rdx) 82 * mpi_limb_t s2_limb) (rcx) 83 */ 84 TEXT 85 GLOBL C_SYMBOL_NAME(_gcry_mpih_addmul_1) 86C_SYMBOL_NAME(_gcry_mpih_addmul_1:) 87 movq %rdx, %r11 88 leaq (%rsi,%rdx,8), %rsi 89 leaq (%rdi,%rdx,8), %rdi 90 negq %r11 91 xorl %r8d, %r8d 92 xorl %r10d, %r10d 93 94 ALIGN(3) /* minimal alignment for claimed speed */ 95.Loop: movq (%rsi,%r11,8), %rax 96 mulq %rcx 97 addq (%rdi,%r11,8), %rax 98 adcq %r10, %rdx 99 addq %r8, %rax 100 movq %r10, %r8 101 movq %rax, (%rdi,%r11,8) 102 adcq %rdx, %r8 103 incq %r11 104 jne .Loop 105 106 movq %r8, %rax 107 ret 108