glibc/sysdeps/mips/add_n.s
Roland McGrath 8f5ca04bc7 Sat Oct 14 02:52:36 1995 Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de>
* malloc/malloc.c (_malloc_internal): Performance fix.  Move
	if statement out of loop.

	* stdio/_itoa.c, stdio/_itoa.h: Complete rewrite.  Much faster
	implementation using GMP functions.  Contributed by
	Torbjorn Granlund and Ulrich Drepper.

	* stdio/test_rdwr.c: Include <errno.h>.

	* sysdeps/i386/i586/Implies: New file.

	New highly optimized string functions for i[345]86.
	* sysdeps/i386/memchr.S, sysdeps/i386/memcmp.S: New files.
        * sysdeps/i386/stpcpy.S, sysdeps/i386/stpncpy.S: New files.
        * sysdeps/i386/strchr.S, sysdeps/i386/strcspn.S: New files.
        * sysdeps/i386/strpbrk.S, sysdeps/i386/strrchr.S: New files.
        * sysdeps/i386/strspn.S, sysdeps/i386/i486/strcat.S: New files.
        * sysdeps/i386/i486/strlen.S, sysdeps/i386/i586/strchr.S: New files.
        * sysdeps/i386/i586/strlen.S: New file.
	* sysdeps/i386/memchr.c: Removed.  There is now an assembler version.

	* sysdeps/i386/i586/memcopy.h (WORD_COPY_BWD): Parameters did
	not correspond to used values.

	* sysdeps/unix/sysv/linux/nfs/nfs.h: New file.  Simply a wrapper
        around a kernel header file.
	* sysdeps/unix/sysv/linux/Dist: Add it.
	* sysdeps/unix/sysv/linux/Makefile [$(subdir)=sunrpc] (headers):
	Likewise.

	* sysdeps/unix/sysv/linux/local_lim.h: Rewrite.  Instead of
        defining ourself we use a kernel header file.

	* sysdeps/unix/sysv/linux/i386/sysdep.h (DO_CALL): Optimize system
        call handler for i586.

	* sysdeps/unix/sysv/linux/sys/param.h: Add copyright and clean up.
Sat Oct 14 02:52:36 1995  Ulrich Drepper  <drepper@ipd.info.uni-karlsruhe.de>

	* malloc/malloc.c (_malloc_internal): Performance fix.  Move
	if statement out of loop.

	* stdio/_itoa.c, stdio/_itoa.h: Complete rewrite.  Much faster
	implementation using GMP functions.  Contributed by
	Torbjorn Granlund and Ulrich Drepper.

	* stdio/test_rdwr.c: Include <errno.h>.

	* sysdeps/i386/i586/Implies: New file.

	New highly optimized string functions for i[345]86.
	* sysdeps/i386/memchr.S, sysdeps/i386/memcmp.S: New files.
        * sysdeps/i386/stpcpy.S, sysdeps/i386/stpncpy.S: New files.
        * sysdeps/i386/strchr.S, sysdeps/i386/strcspn.S: New files.
        * sysdeps/i386/strpbrk.S, sysdeps/i386/strrchr.S: New files.
        * sysdeps/i386/strspn.S, sysdeps/i386/i486/strcat.S: New files.
        * sysdeps/i386/i486/strlen.S, sysdeps/i386/i586/strchr.S: New files.
        * sysdeps/i386/i586/strlen.S: New file.
	* sysdeps/i386/memchr.c: Removed.  There is now an assembler version.

	* sysdeps/i386/i586/memcopy.h (WORD_COPY_BWD): Parameters did
	not correspond to used values.

	* sysdeps/unix/sysv/linux/nfs/nfs.h: New file.  Simply a wrapper
        around a kernel header file.
	* sysdeps/unix/sysv/linux/Dist: Add it.
	* sysdeps/unix/sysv/linux/Makefile [$(subdir)=sunrpc] (headers):
	Likewise.

	* sysdeps/unix/sysv/linux/local_lim.h: Rewrite.  Instead of
        defining ourself we use a kernel header file.

	* sysdeps/unix/sysv/linux/i386/sysdep.h (DO_CALL): Optimize system
        call handler for i586.

	* sysdeps/unix/sysv/linux/sys/param.h: Add copyright and clean up.
1995-10-16 01:37:51 +00:00

120 lines
2.3 KiB
ArmAsm

# MIPS2 __mpn_add_n -- Add two limb vectors of the same length > 0 and
# store sum in a third limb vector.
# Copyright (C) 1995 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 $4
# s1_ptr $5
# s2_ptr $6
# size $7
.text
.align 2
.globl __mpn_add_n
.ent __mpn_add_n
__mpn_add_n:
.set noreorder
.set nomacro
lw $10,0($5)
lw $11,0($6)
addiu $7,$7,-1
and $9,$7,4-1 # number of limbs in first loop
beq $9,$0,.L0 # if multiple of 4 limbs, skip first loop
move $2,$0
subu $7,$7,$9
.Loop0: addiu $9,$9,-1
lw $12,4($5)
addu $11,$11,$2
lw $13,4($6)
sltu $8,$11,$2
addu $11,$10,$11
sltu $2,$11,$10
sw $11,0($4)
or $2,$2,$8
addiu $5,$5,4
addiu $6,$6,4
move $10,$12
move $11,$13
bne $9,$0,.Loop0
addiu $4,$4,4
.L0: beq $7,$0,.Lend
nop
.Loop: addiu $7,$7,-4
lw $12,4($5)
addu $11,$11,$2
lw $13,4($6)
sltu $8,$11,$2
addu $11,$10,$11
sltu $2,$11,$10
sw $11,0($4)
or $2,$2,$8
lw $10,8($5)
addu $13,$13,$2
lw $11,8($6)
sltu $8,$13,$2
addu $13,$12,$13
sltu $2,$13,$12
sw $13,4($4)
or $2,$2,$8
lw $12,12($5)
addu $11,$11,$2
lw $13,12($6)
sltu $8,$11,$2
addu $11,$10,$11
sltu $2,$11,$10
sw $11,8($4)
or $2,$2,$8
lw $10,16($5)
addu $13,$13,$2
lw $11,16($6)
sltu $8,$13,$2
addu $13,$12,$13
sltu $2,$13,$12
sw $13,12($4)
or $2,$2,$8
addiu $5,$5,16
addiu $6,$6,16
bne $7,$0,.Loop
addiu $4,$4,16
.Lend: addu $11,$11,$2
sltu $8,$11,$2
addu $11,$10,$11
sltu $2,$11,$10
sw $11,0($4)
j $31
or $2,$2,$8
.end __mpn_add_n