mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 13:30:06 +00:00
127 lines
2.3 KiB
ArmAsm
127 lines
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., 59 Temple Place - Suite 330, Boston,
|
|
# MA 02111-1307, 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
|