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
105 lines
2.8 KiB
ArmAsm
105 lines
2.8 KiB
ArmAsm
/* Vector optimized 32/64 bit S/390 version of rawmemchr.
|
|
Copyright (C) 2015-2021 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C 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 C 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 C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <ifunc-rawmemchr.h>
|
|
|
|
#if HAVE_RAWMEMCHR_Z13
|
|
|
|
# include "sysdep.h"
|
|
# include "asm-syntax.h"
|
|
|
|
.text
|
|
|
|
/* void *rawmemchr (const void *s, int c)
|
|
Scans memory for character c
|
|
and returns pointer to first c.
|
|
|
|
Register usage:
|
|
-r1=tmp
|
|
-r2=s
|
|
-r3=c
|
|
-r4=tmp
|
|
-r5=current_len
|
|
-v16=part of s
|
|
-v17=index of unequal
|
|
-v18=c replicated
|
|
*/
|
|
ENTRY(RAWMEMCHR_Z13)
|
|
.machine "z13"
|
|
.machinemode "zarch_nohighgprs"
|
|
|
|
vlbb %v16,0(%r2),6 /* Load s until next 4k-byte boundary. */
|
|
lcbb %r1,0(%r2),6 /* Get bytes to 4k-byte boundary or 16. */
|
|
|
|
vlvgb %v18,%r3,0 /* Generate vector which elements are all c.
|
|
If c > 255, c will be truncated. */
|
|
vrepb %v18,%v18,0
|
|
|
|
vfeeb %v17,%v16,%v18 /* Vector find element equal. */
|
|
vlgvb %r5,%v17,7 /* Load byte index of character or zero. */
|
|
clrjl %r5,%r1,.Lend_found /* If found c is in loaded bytes, end. */
|
|
|
|
/* Align s to 16 byte. */
|
|
risbgn %r1,%r2,60,128+63,0 /* %r3 = bits 60-63 of %r2 'and' 15. */
|
|
lghi %r5,16
|
|
slr %r5,%r1 /* Compute bytes to 16bytes boundary. */
|
|
|
|
/* Find c in a 16byte aligned loop. */
|
|
.Lloop:
|
|
vl %v16,0(%r5,%r2) /* Load s. */
|
|
vfeebs %v17,%v16,%v18 /* Vector find element equal. */
|
|
jno .Lcharacter /* Jump away if element found. */
|
|
vl %v16,16(%r5,%r2)
|
|
vfeebs %v17,%v16,%v18
|
|
jno .Lcharacter16
|
|
vl %v16,32(%r5,%r2)
|
|
vfeebs %v17,%v16,%v18
|
|
jno .Lcharacter32
|
|
vl %v16,48(%r5,%r2)
|
|
vfeebs %v17,%v16,%v18
|
|
jno .Lcharacter48
|
|
|
|
aghi %r5,64
|
|
j .Lloop /* No character found -> loop. */
|
|
|
|
/* Found character. */
|
|
.Lcharacter48:
|
|
aghi %r5,16
|
|
.Lcharacter32:
|
|
aghi %r5,16
|
|
.Lcharacter16:
|
|
aghi %r5,16
|
|
.Lcharacter:
|
|
vlgvb %r1,%v17,7 /* Load byte index of character. */
|
|
algr %r5,%r1
|
|
.Lend_found:
|
|
la %r2,0(%r5,%r2) /* Return pointer to character. */
|
|
br %r14
|
|
END(RAWMEMCHR_Z13)
|
|
|
|
# if ! HAVE_RAWMEMCHR_IFUNC
|
|
strong_alias (RAWMEMCHR_Z13, __rawmemchr)
|
|
weak_alias (__rawmemchr, rawmemchr)
|
|
# endif
|
|
|
|
# if ! HAVE_RAWMEMCHR_C && defined SHARED && IS_IN (libc)
|
|
strong_alias (RAWMEMCHR_Z13, __GI___rawmemchr)
|
|
# endif
|
|
|
|
#endif /* HAVE_RAWMEMCHR_Z13 */
|