mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
e215c4786c
* configure.in: Add check for .set directive. * config.h.in: Add #undef HAVE_ASM_SET_DIRECTIVE. * Makerules [! subdir] (O%-lib): Don't prepend ../. * sysdeps/generic/expm1.c: #undef expm1 before weak_alias. See ChangeLog.4 for earlier changes.
102 lines
2.5 KiB
ArmAsm
102 lines
2.5 KiB
ArmAsm
/* i80386 __mpn_add_n -- Add two limb vectors of the same length > 0 and store
|
|
sum in a third limb vector.
|
|
|
|
Copyright (C) 1992, 1994 Free Software Foundation, Inc.
|
|
|
|
This file is part of the GNU MP Library.
|
|
|
|
The GNU MP Library is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU Library General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or (at your
|
|
option) any later version.
|
|
|
|
The GNU MP Library 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 Library General Public
|
|
License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public License
|
|
along with the GNU MP Library; see the file COPYING.LIB. If not, write to
|
|
the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
|
|
/*
|
|
INPUT PARAMETERS
|
|
res_ptr (sp + 4)
|
|
s1_ptr (sp + 8)
|
|
s2_ptr (sp + 12)
|
|
size (sp + 16)
|
|
*/
|
|
|
|
#include "sysdep.h"
|
|
#include "asm-syntax.h"
|
|
|
|
.text
|
|
ALIGN (3)
|
|
.globl C_SYMBOL_NAME(__mpn_add_n)
|
|
C_SYMBOL_NAME(__mpn_add_n:)
|
|
pushl %edi
|
|
pushl %esi
|
|
|
|
movl 12(%esp),%edi /* res_ptr */
|
|
movl 16(%esp),%esi /* s1_ptr */
|
|
movl 20(%esp),%edx /* s2_ptr */
|
|
movl 24(%esp),%ecx /* size */
|
|
|
|
movl %ecx,%eax
|
|
shrl $3,%ecx /* compute count for unrolled loop */
|
|
negl %eax
|
|
andl $7,%eax /* get index where to start loop */
|
|
jz Loop /* necessary special case for 0 */
|
|
incl %ecx /* adjust loop count */
|
|
shll $2,%eax /* adjustment for pointers... */
|
|
subl %eax,%edi /* ... since they are offset ... */
|
|
subl %eax,%esi /* ... by a constant when we ... */
|
|
subl %eax,%edx /* ... enter the loop */
|
|
shrl $2,%eax /* restore previous value */
|
|
#ifdef PIC
|
|
call here
|
|
here: leal (Loop - 3 - here)(%eax,%eax,8),%eax
|
|
addl %eax,(%esp)
|
|
ret
|
|
#else
|
|
leal (Loop - 3)(%eax,%eax,8),%eax /* calc start addr in loop */
|
|
jmp *%eax /* jump into loop */
|
|
#endif
|
|
ALIGN (3)
|
|
Loop: movl (%esi),%eax
|
|
adcl (%edx),%eax
|
|
movl %eax,(%edi)
|
|
movl 4(%esi),%eax
|
|
adcl 4(%edx),%eax
|
|
movl %eax,4(%edi)
|
|
movl 8(%esi),%eax
|
|
adcl 8(%edx),%eax
|
|
movl %eax,8(%edi)
|
|
movl 12(%esi),%eax
|
|
adcl 12(%edx),%eax
|
|
movl %eax,12(%edi)
|
|
movl 16(%esi),%eax
|
|
adcl 16(%edx),%eax
|
|
movl %eax,16(%edi)
|
|
movl 20(%esi),%eax
|
|
adcl 20(%edx),%eax
|
|
movl %eax,20(%edi)
|
|
movl 24(%esi),%eax
|
|
adcl 24(%edx),%eax
|
|
movl %eax,24(%edi)
|
|
movl 28(%esi),%eax
|
|
adcl 28(%edx),%eax
|
|
movl %eax,28(%edi)
|
|
leal 32(%edi),%edi
|
|
leal 32(%esi),%esi
|
|
leal 32(%edx),%edx
|
|
decl %ecx
|
|
jnz Loop
|
|
|
|
sbbl %eax,%eax
|
|
negl %eax
|
|
|
|
popl %esi
|
|
popl %edi
|
|
ret
|