mirror of
https://sourceware.org/git/glibc.git
synced 2024-09-20 00:19:57 +00:00
2b778ceb40
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
91 lines
2.5 KiB
ArmAsm
91 lines
2.5 KiB
ArmAsm
# Alpha 21064 __mpn_submul_1 -- Multiply a limb vector with a limb and
|
|
# subtract the result from a second limb vector.
|
|
|
|
# Copyright (C) 1992-2021 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 Lesser General Public License as published by
|
|
# the Free Software Foundation; either version 2.1 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 Lesser General Public
|
|
# License for more details.
|
|
|
|
# You should have received a copy of the GNU Lesser General Public License
|
|
# along with the GNU MP Library. If not, see <https://www.gnu.org/licenses/>.
|
|
|
|
|
|
# INPUT PARAMETERS
|
|
# res_ptr r16
|
|
# s1_ptr r17
|
|
# size r18
|
|
# s2_limb r19
|
|
|
|
# This code runs at 42 cycles/limb on EV4 and 18 cycles/limb on EV5.
|
|
|
|
.set noreorder
|
|
.set noat
|
|
.text
|
|
.align 3
|
|
.globl __mpn_submul_1
|
|
.ent __mpn_submul_1 2
|
|
__mpn_submul_1:
|
|
.frame $30,0,$26
|
|
|
|
ldq $2,0($17) # $2 = s1_limb
|
|
addq $17,8,$17 # s1_ptr++
|
|
subq $18,1,$18 # size--
|
|
mulq $2,$19,$3 # $3 = prod_low
|
|
ldq $5,0($16) # $5 = *res_ptr
|
|
umulh $2,$19,$0 # $0 = prod_high
|
|
beq $18,.Lend1 # jump if size was == 1
|
|
ldq $2,0($17) # $2 = s1_limb
|
|
addq $17,8,$17 # s1_ptr++
|
|
subq $18,1,$18 # size--
|
|
subq $5,$3,$3
|
|
cmpult $5,$3,$4
|
|
stq $3,0($16)
|
|
addq $16,8,$16 # res_ptr++
|
|
beq $18,.Lend2 # jump if size was == 2
|
|
|
|
.align 3
|
|
.Loop: mulq $2,$19,$3 # $3 = prod_low
|
|
ldq $5,0($16) # $5 = *res_ptr
|
|
addq $4,$0,$0 # cy_limb = cy_limb + 'cy'
|
|
subq $18,1,$18 # size--
|
|
umulh $2,$19,$4 # $4 = cy_limb
|
|
ldq $2,0($17) # $2 = s1_limb
|
|
addq $17,8,$17 # s1_ptr++
|
|
addq $3,$0,$3 # $3 = cy_limb + prod_low
|
|
cmpult $3,$0,$0 # $0 = carry from (cy_limb + prod_low)
|
|
subq $5,$3,$3
|
|
cmpult $5,$3,$5
|
|
stq $3,0($16)
|
|
addq $16,8,$16 # res_ptr++
|
|
addq $5,$0,$0 # combine carries
|
|
bne $18,.Loop
|
|
|
|
.Lend2: mulq $2,$19,$3 # $3 = prod_low
|
|
ldq $5,0($16) # $5 = *res_ptr
|
|
addq $4,$0,$0 # cy_limb = cy_limb + 'cy'
|
|
umulh $2,$19,$4 # $4 = cy_limb
|
|
addq $3,$0,$3 # $3 = cy_limb + prod_low
|
|
cmpult $3,$0,$0 # $0 = carry from (cy_limb + prod_low)
|
|
subq $5,$3,$3
|
|
cmpult $5,$3,$5
|
|
stq $3,0($16)
|
|
addq $5,$0,$0 # combine carries
|
|
addq $4,$0,$0 # cy_limb = prod_high + cy
|
|
ret $31,($26),1
|
|
.Lend1: subq $5,$3,$3
|
|
cmpult $5,$3,$5
|
|
stq $3,0($16)
|
|
addq $0,$5,$0
|
|
ret $31,($26),1
|
|
|
|
.end __mpn_submul_1
|