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glibc/sysdeps/powerpc/powerpc32/power7/strcasecmp.S
Paul Eggert 5a82c74822 Prefer https to http for gnu.org and fsf.org URLs
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
2019-09-07 02:43:31 -07:00

130 lines
3.7 KiB
ArmAsm

/* Optimized strcasecmp implementation for PowerPC32.
Copyright (C) 2011-2019 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 <sysdep.h>
#include <locale-defines.h>
/* int [r3] strcasecmp (const char *s1 [r3], const char *s2 [r4] )
or if defined USE_IN_EXTENDED_LOCALE_MODEL:
int [r3] strcasecmp_l (const char *s1 [r3], const char *s2 [r4],
locale_t loc [r5]) */
#ifndef STRCMP
# define __STRCMP __strcasecmp
# define STRCMP strcasecmp
#endif
ENTRY (__STRCMP)
#define rRTN r3 /* Return value */
#define rSTR1 r5 /* 1st string */
#define rSTR2 r4 /* 2nd string */
#define rLOCARG r5 /* 3rd argument: locale_t */
#define rCHAR1 r6 /* Byte read from 1st string */
#define rCHAR2 r7 /* Byte read from 2nd string */
#define rADDR1 r8 /* Address of tolower(rCHAR1) */
#define rADDR2 r12 /* Address of tolower(rCHAR2) */
#define rLWR1 r8 /* Byte tolower(rCHAR1) */
#define rLWR2 r12 /* Byte tolower(rCHAR2) */
#define rTMP r0
#define rGOT r9 /* Address of the Global Offset Table */
#define rLOC r11 /* Default locale address */
cmpw cr7, r3, r4
#ifndef USE_IN_EXTENDED_LOCALE_MODEL
# ifdef SHARED
mflr rTMP
bcl 20,31,.L1
.L1: mflr rGOT
addis rGOT, rGOT, _GLOBAL_OFFSET_TABLE_-.L1@ha
addi rGOT, rGOT, _GLOBAL_OFFSET_TABLE_-.L1@l
lwz rLOC, __libc_tsd_LOCALE@got@tprel(rGOT)
add rLOC, rLOC, __libc_tsd_LOCALE@tls
lwz rLOC, 0(rLOC)
mtlr rTMP
# else
lis rTMP,_GLOBAL_OFFSET_TABLE_@ha
la rLOC,_GLOBAL_OFFSET_TABLE_@l(rTMP)
lwz rLOC, __libc_tsd_LOCALE@got@tprel(rGOT)
add rLOC, rLOC, __libc_tsd_LOCALE@tls
lwz rLOC, 0(rLOC)
# endif /* SHARED */
#else
mr rLOC, rLOCARG
#endif
mr rSTR1, rRTN
lwz rLOC, LOCALE_CTYPE_TOLOWER(rLOC)
li rRTN, 0
beqlr cr7
/* Unrolling loop for POWER: loads are done with 'lbz' plus
offset and string descriptors are only updated in the end
of loop unrolling. */
L(loop):
lbz rCHAR1, 0(rSTR1) /* Load char from s1 */
lbz rCHAR2, 0(rSTR2) /* Load char from s2 */
sldi rADDR1, rCHAR1, 2 /* Calculate address for tolower(*s1) */
sldi rADDR2, rCHAR2, 2 /* Calculate address for tolower(*s2) */
lwzx rLWR1, rLOC, rADDR1 /* Load tolower(*s1) */
lwzx rLWR2, rLOC, rADDR2 /* Load tolower(*s2) */
cmpwi cr7, rCHAR1, 0 /* *s1 == '\0' ? */
subf. r3, rLWR2, rLWR1
bnelr
beqlr cr7
lbz rCHAR1, 1(rSTR1)
lbz rCHAR2, 1(rSTR2)
sldi rADDR1, rCHAR1, 2
sldi rADDR2, rCHAR2, 2
lwzx rLWR1, rLOC, rADDR1
lwzx rLWR2, rLOC, rADDR2
cmpwi cr7, rCHAR1, 0
subf. r3, rLWR2, rLWR1
bnelr
beqlr cr7
lbz rCHAR1, 2(rSTR1)
lbz rCHAR2, 2(rSTR2)
sldi rADDR1, rCHAR1, 2
sldi rADDR2, rCHAR2, 2
lwzx rLWR1, rLOC, rADDR1
lwzx rLWR2, rLOC, rADDR2
cmpwi cr7, rCHAR1, 0
subf. r3, rLWR2, rLWR1
bnelr
beqlr cr7
lbz rCHAR1, 3(rSTR1)
lbz rCHAR2, 3(rSTR2)
/* Increment both string descriptors */
addi rSTR1, rSTR1, 4
addi rSTR2, rSTR2, 4
sldi rADDR1, rCHAR1, 2
sldi rADDR2, rCHAR2, 2
lwzx rLWR1, rLOC, rADDR1
lwzx rLWR2, rLOC, rADDR2
cmpwi cr7, rCHAR1, 0
subf. r3, rLWR2, rLWR1
bnelr
bne cr7,L(loop)
blr
END (__STRCMP)
weak_alias (__STRCMP, STRCMP)
libc_hidden_builtin_def (__STRCMP)