diff options
Diffstat (limited to 'libotr/libgcrypt-1.8.7/mpi/amd64/mpih-add1.S')
-rw-r--r-- | libotr/libgcrypt-1.8.7/mpi/amd64/mpih-add1.S | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/libotr/libgcrypt-1.8.7/mpi/amd64/mpih-add1.S b/libotr/libgcrypt-1.8.7/mpi/amd64/mpih-add1.S new file mode 100644 index 0000000..6a90262 --- /dev/null +++ b/libotr/libgcrypt-1.8.7/mpi/amd64/mpih-add1.S @@ -0,0 +1,65 @@ +/* AMD64 (x86_64) add_n -- Add two limb vectors of the same length > 0 and store + * sum in a third limb vector. + * + * Copyright (C) 1992, 1994, 1995, 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_add_n( mpi_ptr_t res_ptr, rdi + * mpi_ptr_t s1_ptr, rsi + * mpi_ptr_t s2_ptr, rdx + * mpi_size_t size) rcx + */ + +.text + .globl C_SYMBOL_NAME(_gcry_mpih_add_n) +C_SYMBOL_NAME(_gcry_mpih_add_n:) + FUNC_ENTRY() + leaq (%rsi,%rcx,8), %rsi + leaq (%rdi,%rcx,8), %rdi + leaq (%rdx,%rcx,8), %rdx + negq %rcx + xorl %eax, %eax /* clear cy */ + + ALIGN(4) /* minimal alignment for claimed speed */ +.Loop: movq (%rsi,%rcx,8), %rax + movq (%rdx,%rcx,8), %r10 + adcq %r10, %rax + movq %rax, (%rdi,%rcx,8) + incq %rcx + jne .Loop + + movq %rcx, %rax /* zero %rax */ + adcq %rax, %rax + FUNC_EXIT() + ret + \ No newline at end of file |