summaryrefslogtreecommitdiff
path: root/sysdeps/vax/submul_1.s
diff options
context:
space:
mode:
authorRoland McGrath <roland@gnu.org>1995-10-16 01:37:51 +0000
committerRoland McGrath <roland@gnu.org>1995-10-16 01:37:51 +0000
commit8f5ca04bc7fd53741d80117df992995ace8f6d2d (patch)
treee39c13fc198b22ec55647259a8080051988e8c69 /sysdeps/vax/submul_1.s
parent5d82cf5c55f56ae10d3b0a205d1fcc7de1cf56a0 (diff)
downloadglibc-8f5ca04bc7fd53741d80117df992995ace8f6d2d.tar.gz
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.
Diffstat (limited to 'sysdeps/vax/submul_1.s')
-rw-r--r--sysdeps/vax/submul_1.s125
1 files changed, 125 insertions, 0 deletions
diff --git a/sysdeps/vax/submul_1.s b/sysdeps/vax/submul_1.s
new file mode 100644
index 0000000000..875cbfd651
--- /dev/null
+++ b/sysdeps/vax/submul_1.s
@@ -0,0 +1,125 @@
+# 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