|
Packit |
6c4009 |
/* Optimized strcasecmp implementation for PowerPC64.
|
|
Packit |
6c4009 |
Copyright (C) 2011-2018 Free Software Foundation, Inc.
|
|
Packit |
6c4009 |
This file is part of the GNU C Library.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
The GNU C Library is free software; you can redistribute it and/or
|
|
Packit |
6c4009 |
modify it under the terms of the GNU Lesser General Public
|
|
Packit |
6c4009 |
License as published by the Free Software Foundation; either
|
|
Packit |
6c4009 |
version 2.1 of the License, or (at your option) any later version.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
The GNU C Library is distributed in the hope that it will be useful,
|
|
Packit |
6c4009 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Packit |
6c4009 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Packit |
6c4009 |
Lesser General Public License for more details.
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
You should have received a copy of the GNU Lesser General Public
|
|
Packit |
6c4009 |
License along with the GNU C Library; if not, see
|
|
Packit |
6c4009 |
<http://www.gnu.org/licenses/>. */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#include <sysdep.h>
|
|
Packit |
6c4009 |
#include <locale-defines.h>
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* int [r3] strcasecmp (const char *s1 [r3], const char *s2 [r4] )
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
or if defined USE_IN_EXTENDED_LOCALE_MODEL:
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
int [r3] strcasecmp_l (const char *s1 [r3], const char *s2 [r4],
|
|
Packit |
6c4009 |
locale_t loc [r5]) */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#ifndef STRCMP
|
|
Packit |
6c4009 |
# define __STRCMP __strcasecmp
|
|
Packit |
6c4009 |
# define STRCMP strcasecmp
|
|
Packit |
6c4009 |
#endif
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#ifndef USE_IN_EXTENDED_LOCALE_MODEL
|
|
Packit |
6c4009 |
ENTRY (__STRCMP)
|
|
Packit |
6c4009 |
CALL_MCOUNT 2
|
|
Packit |
6c4009 |
#else
|
|
Packit |
6c4009 |
ENTRY_TOCLESS (__STRCMP)
|
|
Packit |
6c4009 |
CALL_MCOUNT 3
|
|
Packit |
6c4009 |
#endif
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#define rRTN r3 /* Return value */
|
|
Packit |
6c4009 |
#define rSTR1 r5 /* 1st string */
|
|
Packit |
6c4009 |
#define rSTR2 r4 /* 2nd string */
|
|
Packit |
6c4009 |
#define rLOCARG r5 /* 3rd argument: locale_t */
|
|
Packit |
6c4009 |
#define rCHAR1 r6 /* Byte read from 1st string */
|
|
Packit |
6c4009 |
#define rCHAR2 r7 /* Byte read from 2nd string */
|
|
Packit |
6c4009 |
#define rADDR1 r8 /* Address of tolower(rCHAR1) */
|
|
Packit |
6c4009 |
#define rADDR2 r12 /* Address of tolower(rCHAR2) */
|
|
Packit |
6c4009 |
#define rLWR1 r8 /* Word tolower(rCHAR1) */
|
|
Packit |
6c4009 |
#define rLWR2 r12 /* Word tolower(rCHAR2) */
|
|
Packit |
6c4009 |
#define rTMP r9
|
|
Packit |
6c4009 |
#define rLOC r11 /* Default locale address */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
cmpd cr7, r3, r4
|
|
Packit |
6c4009 |
#ifndef USE_IN_EXTENDED_LOCALE_MODEL
|
|
Packit |
6c4009 |
ld rTMP, __libc_tsd_LOCALE@got@tprel(r2)
|
|
Packit |
6c4009 |
add rLOC, rTMP, __libc_tsd_LOCALE@tls
|
|
Packit |
6c4009 |
ld rLOC, 0(rLOC)
|
|
Packit |
6c4009 |
#else
|
|
Packit |
6c4009 |
mr rLOC, rLOCARG
|
|
Packit |
6c4009 |
#endif
|
|
Packit |
6c4009 |
ld rLOC, LOCALE_CTYPE_TOLOWER(rLOC)
|
|
Packit |
6c4009 |
mr rSTR1, rRTN
|
|
Packit |
6c4009 |
li rRTN, 0
|
|
Packit |
6c4009 |
beqlr cr7
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Unrolling loop for POWER: loads are done with 'lbz' plus
|
|
Packit |
6c4009 |
offset and string descriptors are only updated in the end
|
|
Packit |
6c4009 |
of loop unrolling. */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
lbz rCHAR1, 0(rSTR1) /* Load char from s1 */
|
|
Packit |
6c4009 |
lbz rCHAR2, 0(rSTR2) /* Load char from s2 */
|
|
Packit |
6c4009 |
L(loop):
|
|
Packit |
6c4009 |
cmpdi rCHAR1, 0 /* *s1 == '\0' ? */
|
|
Packit |
6c4009 |
sldi rADDR1, rCHAR1, 2 /* Calculate address for tolower(*s1) */
|
|
Packit |
6c4009 |
sldi rADDR2, rCHAR2, 2 /* Calculate address for tolower(*s2) */
|
|
Packit |
6c4009 |
lwzx rLWR1, rLOC, rADDR1 /* Load tolower(*s1) */
|
|
Packit |
6c4009 |
lwzx rLWR2, rLOC, rADDR2 /* Load tolower(*s2) */
|
|
Packit |
6c4009 |
cmpw cr1, rLWR1, rLWR2 /* r = tolower(*s1) == tolower(*s2) ? */
|
|
Packit |
6c4009 |
crorc 4*cr1+eq,eq,4*cr1+eq /* (*s1 != '\0') || (r == 1) */
|
|
Packit |
6c4009 |
beq cr1, L(done)
|
|
Packit |
6c4009 |
lbz rCHAR1, 1(rSTR1)
|
|
Packit |
6c4009 |
lbz rCHAR2, 1(rSTR2)
|
|
Packit |
6c4009 |
cmpdi rCHAR1, 0
|
|
Packit |
6c4009 |
sldi rADDR1, rCHAR1, 2
|
|
Packit |
6c4009 |
sldi rADDR2, rCHAR2, 2
|
|
Packit |
6c4009 |
lwzx rLWR1, rLOC, rADDR1
|
|
Packit |
6c4009 |
lwzx rLWR2, rLOC, rADDR2
|
|
Packit |
6c4009 |
cmpw cr1, rLWR1, rLWR2
|
|
Packit |
6c4009 |
crorc 4*cr1+eq,eq,4*cr1+eq
|
|
Packit |
6c4009 |
beq cr1, L(done)
|
|
Packit |
6c4009 |
lbz rCHAR1, 2(rSTR1)
|
|
Packit |
6c4009 |
lbz rCHAR2, 2(rSTR2)
|
|
Packit |
6c4009 |
cmpdi rCHAR1, 0
|
|
Packit |
6c4009 |
sldi rADDR1, rCHAR1, 2
|
|
Packit |
6c4009 |
sldi rADDR2, rCHAR2, 2
|
|
Packit |
6c4009 |
lwzx rLWR1, rLOC, rADDR1
|
|
Packit |
6c4009 |
lwzx rLWR2, rLOC, rADDR2
|
|
Packit |
6c4009 |
cmpw cr1, rLWR1, rLWR2
|
|
Packit |
6c4009 |
crorc 4*cr1+eq,eq,4*cr1+eq
|
|
Packit |
6c4009 |
beq cr1, L(done)
|
|
Packit |
6c4009 |
lbz rCHAR1, 3(rSTR1)
|
|
Packit |
6c4009 |
lbz rCHAR2, 3(rSTR2)
|
|
Packit |
6c4009 |
cmpdi rCHAR1, 0
|
|
Packit |
6c4009 |
/* Increment both string descriptors */
|
|
Packit |
6c4009 |
addi rSTR1, rSTR1, 4
|
|
Packit |
6c4009 |
addi rSTR2, rSTR2, 4
|
|
Packit |
6c4009 |
sldi rADDR1, rCHAR1, 2
|
|
Packit |
6c4009 |
sldi rADDR2, rCHAR2, 2
|
|
Packit |
6c4009 |
lwzx rLWR1, rLOC, rADDR1
|
|
Packit |
6c4009 |
lwzx rLWR2, rLOC, rADDR2
|
|
Packit |
6c4009 |
cmpw cr1, rLWR1, rLWR2
|
|
Packit |
6c4009 |
crorc 4*cr1+eq,eq,4*cr1+eq
|
|
Packit |
6c4009 |
beq cr1,L(done)
|
|
Packit |
6c4009 |
lbz rCHAR1, 0(rSTR1) /* Load char from s1 */
|
|
Packit |
6c4009 |
lbz rCHAR2, 0(rSTR2) /* Load char from s2 */
|
|
Packit |
6c4009 |
b L(loop)
|
|
Packit |
6c4009 |
L(done):
|
|
Packit |
6c4009 |
subf r0, rLWR2, rLWR1
|
|
Packit |
6c4009 |
extsw rRTN, r0
|
|
Packit |
6c4009 |
blr
|
|
Packit |
6c4009 |
END (__STRCMP)
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
weak_alias (__STRCMP, STRCMP)
|
|
Packit |
6c4009 |
libc_hidden_builtin_def (__STRCMP)
|