diff options
Diffstat (limited to 'plugins/MirOTR/libgcrypt-1.4.6/mpi/i586/mpih-sub1.S')
-rw-r--r-- | plugins/MirOTR/libgcrypt-1.4.6/mpi/i586/mpih-sub1.S | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/plugins/MirOTR/libgcrypt-1.4.6/mpi/i586/mpih-sub1.S b/plugins/MirOTR/libgcrypt-1.4.6/mpi/i586/mpih-sub1.S new file mode 100644 index 0000000000..ef2d580743 --- /dev/null +++ b/plugins/MirOTR/libgcrypt-1.4.6/mpi/i586/mpih-sub1.S @@ -0,0 +1,142 @@ +/* i80586 sub_n -- Sub two limb vectors of the same length > 0 and store + * sum in a third limb vector. + * + * Copyright (C) 1992, 1994, 1995, 1998, + * 2001, 2002 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_sub_n( mpi_ptr_t res_ptr, (sp + 4) + * mpi_ptr_t s1_ptr, (sp + 8) + * mpi_ptr_t s2_ptr, (sp + 12) + * mpi_size_t size) (sp + 16) + */ + + +.text + ALIGN (3) + .globl C_SYMBOL_NAME(_gcry_mpih_sub_n) +C_SYMBOL_NAME(_gcry_mpih_sub_n:) + + pushl %edi + pushl %esi + pushl %ebx + pushl %ebp + + movl 20(%esp),%edi /* res_ptr */ + movl 24(%esp),%esi /* s1_ptr */ + movl 28(%esp),%ebp /* s2_ptr */ + movl 32(%esp),%ecx /* size */ + + movl (%ebp),%ebx + + decl %ecx + movl %ecx,%edx + shrl $3,%ecx + andl $7,%edx + testl %ecx,%ecx /* zero carry flag */ + jz Lend + pushl %edx + + ALIGN (3) +Loop: movl 28(%edi),%eax /* fetch destination cache line */ + leal 32(%edi),%edi + +L1: movl (%esi),%eax + movl 4(%esi),%edx + sbbl %ebx,%eax + movl 4(%ebp),%ebx + sbbl %ebx,%edx + movl 8(%ebp),%ebx + movl %eax,-32(%edi) + movl %edx,-28(%edi) + +L2: movl 8(%esi),%eax + movl 12(%esi),%edx + sbbl %ebx,%eax + movl 12(%ebp),%ebx + sbbl %ebx,%edx + movl 16(%ebp),%ebx + movl %eax,-24(%edi) + movl %edx,-20(%edi) + +L3: movl 16(%esi),%eax + movl 20(%esi),%edx + sbbl %ebx,%eax + movl 20(%ebp),%ebx + sbbl %ebx,%edx + movl 24(%ebp),%ebx + movl %eax,-16(%edi) + movl %edx,-12(%edi) + +L4: movl 24(%esi),%eax + movl 28(%esi),%edx + sbbl %ebx,%eax + movl 28(%ebp),%ebx + sbbl %ebx,%edx + movl 32(%ebp),%ebx + movl %eax,-8(%edi) + movl %edx,-4(%edi) + + leal 32(%esi),%esi + leal 32(%ebp),%ebp + decl %ecx + jnz Loop + + popl %edx +Lend: + decl %edx /* test %edx w/o clobbering carry */ + js Lend2 + incl %edx +Loop2: + leal 4(%edi),%edi + movl (%esi),%eax + sbbl %ebx,%eax + movl 4(%ebp),%ebx + movl %eax,-4(%edi) + leal 4(%esi),%esi + leal 4(%ebp),%ebp + decl %edx + jnz Loop2 +Lend2: + movl (%esi),%eax + sbbl %ebx,%eax + movl %eax,(%edi) + + sbbl %eax,%eax + negl %eax + + popl %ebp + popl %ebx + popl %esi + popl %edi + ret + |