diff options
Diffstat (limited to 'mpi/i386-openbsd/mpih-rshift.S')
-rw-r--r-- | mpi/i386-openbsd/mpih-rshift.S | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/mpi/i386-openbsd/mpih-rshift.S b/mpi/i386-openbsd/mpih-rshift.S deleted file mode 100644 index 9718204c7..000000000 --- a/mpi/i386-openbsd/mpih-rshift.S +++ /dev/null @@ -1,99 +0,0 @@ -/* i80386 rshift - * - * Copyright (C) 1992, 1994, 1998, - * 2001 Free Software Foundation, Inc. - * - * This file is part of GnuPG. - * - * GnuPG is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * GnuPG 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 General Public License for more details. - * - * You should have received a copy of the GNU 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. - * The GNU MP Library itself is published under the LGPL; - * however I decided to publish this code under the plain GPL. - */ - - -#include "sysdep.h" -#include "asm-syntax.h" - - -/******************* - * mpi_limb_t - * mpihelp_rshift( mpi_ptr_t wp, (sp + 4) - * mpi_ptr_t up, (sp + 8) - * mpi_size_t usize, (sp + 12) - * unsigned cnt) (sp + 16) - */ - -.text - ALIGN (3) - .globl C_SYMBOL_NAME(mpihelp_rshift) -C_SYMBOL_NAME(mpihelp_rshift:) - pushl %edi - pushl %esi - pushl %ebx - - movl 16(%esp),%edi /* wp */ - movl 20(%esp),%esi /* up */ - movl 24(%esp),%edx /* usize */ - movl 28(%esp),%ecx /* cnt */ - - leal -4(%edi,%edx,4),%edi - leal (%esi,%edx,4),%esi - negl %edx - - movl (%esi,%edx,4),%ebx /* read least significant limb */ - xorl %eax,%eax - shrdl %cl,%ebx,%eax /* compute carry limb */ - incl %edx - jz Lend2 - pushl %eax /* push carry limb onto stack */ - testb $1,%edx - jnz L2 /* enter loop in the middle */ - movl %ebx,%eax - - ALIGN (3) -Loop2: movl (%esi,%edx,4),%ebx /* load next higher limb */ - shrdl %cl,%ebx,%eax /* compute result limb */ - movl %eax,(%edi,%edx,4) /* store it */ - incl %edx -L2: movl (%esi,%edx,4),%eax - shrdl %cl,%eax,%ebx - movl %ebx,(%edi,%edx,4) - incl %edx - jnz Loop2 - - shrl %cl,%eax /* compute most significant limb */ - movl %eax,(%edi) /* store it */ - - popl %eax /* pop carry limb */ - - popl %ebx - popl %esi - popl %edi - ret - -Lend2: shrl %cl,%ebx /* compute most significant limb */ - movl %ebx,(%edi) /* store it */ - - popl %ebx - popl %esi - popl %edi - ret - |