glibc/sysdeps/mips/sub_n.S
Paul Eggert 2b778ceb40 Update copyright dates with scripts/update-copyrights
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
2021-01-02 12:17:34 -08:00

122 lines
2.2 KiB
ArmAsm

/* MIPS2 __mpn_sub_n -- Subtract two limb vectors of the same length > 0 and
store difference in a third limb vector.
Copyright (C) 1995-2021 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/>. */
#include <sysdep.h>
/* INPUT PARAMETERS
res_ptr $4
s1_ptr $5
s2_ptr $6
size $7
*/
#ifdef __PIC__
.option pic2
#endif
ENTRY (__mpn_sub_n)
.set noreorder
#ifdef __PIC__
.cpload t9
#endif
.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,L(L0) /* if multiple of 4 limbs, skip first loop */
move $2,$0
subu $7,$7,$9
L(Loop0): addiu $9,$9,-1
lw $12,4($5)
addu $11,$11,$2
lw $13,4($6)
sltu $8,$11,$2
subu $11,$10,$11
sltu $2,$10,$11
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,L(Loop0)
addiu $4,$4,4
L(L0): beq $7,$0,L(Lend)
nop
L(Loop): addiu $7,$7,-4
lw $12,4($5)
addu $11,$11,$2
lw $13,4($6)
sltu $8,$11,$2
subu $11,$10,$11
sltu $2,$10,$11
sw $11,0($4)
or $2,$2,$8
lw $10,8($5)
addu $13,$13,$2
lw $11,8($6)
sltu $8,$13,$2
subu $13,$12,$13
sltu $2,$12,$13
sw $13,4($4)
or $2,$2,$8
lw $12,12($5)
addu $11,$11,$2
lw $13,12($6)
sltu $8,$11,$2
subu $11,$10,$11
sltu $2,$10,$11
sw $11,8($4)
or $2,$2,$8
lw $10,16($5)
addu $13,$13,$2
lw $11,16($6)
sltu $8,$13,$2
subu $13,$12,$13
sltu $2,$12,$13
sw $13,12($4)
or $2,$2,$8
addiu $5,$5,16
addiu $6,$6,16
bne $7,$0,L(Loop)
addiu $4,$4,16
L(Lend): addu $11,$11,$2
sltu $8,$11,$2
subu $11,$10,$11
sltu $2,$10,$11
sw $11,0($4)
j $31
or $2,$2,$8
END (__mpn_sub_n)