glibc/sysdeps/vax/submul_1.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

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2.3 KiB
ArmAsm

# VAX __mpn_submul_1 -- Multiply a limb vector with a limb and subtract
# the result from a second 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)
# size (sp + 12)
# s2_limb (sp + 16)
.text
.align 1
.globl ___mpn_submul_1
___mpn_submul_1:
.word 0xfc0
movl 12(ap),r4
movl 8(ap),r8
movl 4(ap),r9
movl 16(ap),r6
jlss s2_big
clrl r3
incl r4
ashl $-1,r4,r7
jlbc r4,L1
clrl r11
# Loop for S2_LIMB < 0x80000000
Loop1: movl (r8)+,r1
jlss L1n0
emul r1,r6,$0,r2
addl2 r11,r2
adwc $0,r3
subl2 r2,(r9)+
adwc $0,r3
L1: movl (r8)+,r1
jlss L1n1
L1p1: emul r1,r6,$0,r10
addl2 r3,r10
adwc $0,r11
subl2 r10,(r9)+
adwc $0,r11
jsobgtr r7,Loop1
movl r11,r0
ret
L1n0: emul r1,r6,$0,r2
addl2 r11,r2
adwc r6,r3
subl2 r2,(r9)+
adwc $0,r3
movl (r8)+,r1
jgeq L1p1
L1n1: emul r1,r6,$0,r10
addl2 r3,r10
adwc r6,r11
subl2 r10,(r9)+
adwc $0,r11
jsobgtr r7,Loop1
movl r11,r0
ret
s2_big: clrl r3
incl r4
ashl $-1,r4,r7
jlbc r4,L2
clrl r11
# Loop for S2_LIMB >= 0x80000000
Loop2: movl (r8)+,r1
jlss L2n0
emul r1,r6,$0,r2
addl2 r11,r2
adwc r1,r3
subl2 r2,(r9)+
adwc $0,r3
L2: movl (r8)+,r1
jlss L2n1
L2p1: emul r1,r6,$0,r10
addl2 r3,r10
adwc r1,r11
subl2 r10,(r9)+
adwc $0,r11
jsobgtr r7,Loop2
movl r11,r0
ret
L2n0: emul r1,r6,$0,r2
addl2 r11,r2
adwc r6,r3
subl2 r2,(r9)+
adwc r1,r3
movl (r8)+,r1
jgeq L2p1
L2n1: emul r1,r6,$0,r10
addl2 r3,r10
adwc r6,r11
subl2 r10,(r9)+
adwc r1,r11
jsobgtr r7,Loop2
movl r11,r0
ret