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5a82c74822
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
196 lines
6.0 KiB
ArmAsm
196 lines
6.0 KiB
ArmAsm
/* Vector optimized 32/64 bit S/390 version of wcsrchr.
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Copyright (C) 2015-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <ifunc-wcsrchr.h>
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#if HAVE_WCSRCHR_Z13
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# include "sysdep.h"
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# include "asm-syntax.h"
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.text
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/* wchar_t *wcsrchr (const wchar_t *s, wchar_t c)
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Locate the last character c in string.
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Register usage:
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-r0=loaded bytes in first part of s.
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-r1=pointer to last occurence of c or NULL if not found.
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-r2=s
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-r3=c
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-r4=tmp
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-r5=current_len
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-v16=part of s
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-v17=index of found element
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-v18=replicated c
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-v19=part of s with last occurence of c.
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-v20=permute pattern
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*/
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ENTRY(WCSRCHR_Z13)
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.machine "z13"
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.machinemode "zarch_nohighgprs"
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vlbb %v16,0(%r2),6 /* Load s until next 4k-byte boundary. */
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lcbb %r0,0(%r2),6 /* Get bytes to 4k-byte boundary or 16. */
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tmll %r2,3 /* Test if s is 4-byte aligned? */
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jne .Lfallback /* And use common-code variant if not. */
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vlvgf %v18,%r3,0 /* Generate vector which elements are all c. */
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vrepf %v18,%v18,0
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lghi %r1,-1 /* Currently no c found. */
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lghi %r5,0 /* current_len = 0. */
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vfeezfs %v17,%v16,%v18 /* Find element equal or zero. */
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vlgvb %r4,%v17,7 /* Load byte index of c/zero or 16. */
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clrjl %r4,%r0,.Lfound_first_part /* Found c/zero in loaded bytes. */
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.Lalign:
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/* Align s to 16 byte. */
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risbgn %r4,%r2,60,128+63,0 /* %r3 = bits 60-63 of %r2 'and' 15. */
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lghi %r5,16 /* current_len = 16. */
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slr %r5,%r4 /* Compute bytes to 16bytes boundary. */
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.Lloop:
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vl %v16,0(%r5,%r2) /* Load s. */
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vfeezfs %v17,%v16,%v18 /* Find element equal with zero search. */
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jno .Lfound /* Found c/zero (cc=0|1|2). */
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vl %v16,16(%r5,%r2)
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vfeezfs %v17,%v16,%v18
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jno .Lfound16
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vl %v16,32(%r5,%r2)
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vfeezfs %v17,%v16,%v18
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jno .Lfound32
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vl %v16,48(%r5,%r2)
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vfeezfs %v17,%v16,%v18
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jno .Lfound48
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aghi %r5,64
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j .Lloop /* No character and no zero -> loop. */
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.Lfound48:
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la %r5,16(%r5) /* Use la since aghi would clobber cc. */
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.Lfound32:
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la %r5,16(%r5)
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.Lfound16:
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la %r5,16(%r5)
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.Lfound:
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je .Lzero /* Found zero, but no c before that zero. */
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/* Save this part of s to check for further matches after reaching
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the end of the complete string. */
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vlr %v19,%v16
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lgr %r1,%r5
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jh .Lzero /* Found a zero after the found c. */
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aghi %r5,16 /* Start search of next part of s. */
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j .Lloop
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.Lfound_first_part:
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/* This code is only executed if the found c/zero is whithin loaded
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bytes. If no c/zero was found (cc==3) the found index = 16, thus
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this code is not called.
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Resulting condition code of vector find element equal:
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cc==0: no c, found zero
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cc==1: c found, no zero
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cc==2: c found, found zero after c
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cc==3: no c, no zero (this case can be ignored). */
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je .Lzero /* Found zero, but no c before that zero. */
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locgrne %r1,%r5 /* Mark c as found in first part of s. */
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vlr %v19,%v16
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jl .Lalign /* No zero (e.g. if vr was fully loaded)
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-> Align and loop afterwards. */
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/* Found a zero in vr. If vr was not fully loaded due to block
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boundary, the remaining bytes are filled with zero and we can't
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rely on zero indication of condition code here! */
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vfenezf %v17,%v16,%v16
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vlgvb %r4,%v17,7 /* Load byte index of zero or 16. */
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clrjl %r4,%r0,.Lzero /* Zero within loaded bytes -> end. */
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j .Lalign /* Align and loop afterwards. */
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.Lend_searched_zero:
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vlgvb %r4,%v17,7 /* Load byte index of zero. */
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algr %r5,%r4
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la %r2,0(%r5,%r2) /* Return pointer to zero. */
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br %r14
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.Lzero:
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/* Reached end of string. Check if one c was found before. */
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clije %r3,0,.Lend_searched_zero /* Found zero and c is zero. */
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cgfi %r1,-1 /* No c found -> return NULL. */
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locghie %r2,0
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ber %r14
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larl %r3,.Lpermute_mask /* Load permute mask. */
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vl %v20,0(%r3)
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/* c was found and is part of v19. */
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vfenezf %v17,%v19,%v19 /* Find zero. */
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vlgvb %r4,%v17,7 /* Load byte index of zero or 16. */
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ahi %r4,3 /* Found zero index is first byte,
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thus highest byte index is last byte of
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wchar_t zero. */
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clgfi %r5,0 /* Loaded byte count in v19 is 16, ... */
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lochine %r0,16 /* ... if v19 is not the first part of s. */
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ahi %r0,-1 /* Convert byte count to highest index. */
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clr %r0,%r4
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locrl %r4,%r0 /* r4 = min (zero-index, highest-index). */
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/* Right-shift of v19 to mask bytes after zero. */
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clije %r4,15,.Lzero_permute /* No shift is needed if highest index
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in vr is 15. */
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lhi %r0,15
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slr %r0,%r4 /* Compute byte count for vector shift left. */
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sll %r0,3 /* Convert to bit count. */
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vlvgb %v17,%r0,7
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vsrlb %v19,%v19,%v17 /* Vector shift right by byte by number of bytes
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specified in bits 1-4 of byte 7 in v17. */
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/* Reverse bytes in v19. */
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.Lzero_permute:
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vperm %v19,%v19,%v19,%v20 /* Permute v19 to reversed order. */
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/* Find c in reversed v19. */
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vfeef %v19,%v19,%v18 /* Find c. */
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la %r2,0(%r1,%r2)
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vlgvb %r3,%v19,7 /* Load byte index of c. */
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/* Compute index in real s and return. */
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slgr %r4,%r3
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lay %r2,-3(%r4,%r2) /* Return pointer to zero. -3 is needed,
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because the found byte index is reversed in
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vector-register. Thus point to first byte of
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wchar_t. */
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br %r14
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.Lpermute_mask:
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.byte 0x0C,0x0D,0x0E,0x0F,0x08,0x09,0x0A,0x0B
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.byte 0x04,0x05,0x06,0x07,0x00,0x01,0x02,0x03
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.Lfallback:
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jg WCSRCHR_C
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END(WCSRCHR_Z13)
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# if ! HAVE_WCSRCHR_IFUNC
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strong_alias (WCSRCHR_Z13, wcsrchr)
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# endif
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#endif
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