| 1 | /* strcmp - compare two string. 64 bit S/390 version. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | Copyright (C) 2001-2022 Free Software Foundation, Inc. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | /* INPUT PARAMETERS |
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| 20 | %r2 = address of string 1 |
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| 21 | %r3 = address of string 2. */ |
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| 22 | |
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| 23 | #include <ifunc-strcmp.h> |
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| 24 | #include "sysdep.h" |
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| 25 | #include "asm-syntax.h" |
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| 26 | |
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| 27 | #if HAVE_STRCMP_Z900_G5 |
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| 28 | # if defined __s390x__ |
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| 29 | # define SLGR slgr |
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| 30 | # define LGHI lghi |
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| 31 | # else |
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| 32 | # define SLGR slr |
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| 33 | # define LGHI lhi |
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| 34 | # endif /* ! defined __s390x__ */ |
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| 35 | |
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| 36 | .text |
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| 37 | ENTRY(STRCMP_Z900_G5) |
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| 38 | SLGR %r0,%r0 |
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| 39 | 0: clst %r2,%r3 |
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| 40 | jo 0b |
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| 41 | jp 1f |
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| 42 | jm 2f |
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| 43 | SLGR %r2,%r2 |
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| 44 | br %r14 |
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| 45 | 1: LGHI %r2,1 |
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| 46 | br %r14 |
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| 47 | 2: LGHI %r2,-1 |
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| 48 | br %r14 |
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| 49 | END(STRCMP_Z900_G5) |
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| 50 | |
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| 51 | # if ! HAVE_STRCMP_IFUNC |
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| 52 | strong_alias (STRCMP_Z900_G5, strcmp) |
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| 53 | # endif |
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| 54 | |
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| 55 | # if defined SHARED && IS_IN (libc) |
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| 56 | strong_alias (STRCMP_Z900_G5, __GI_strcmp) |
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| 57 | # endif |
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| 58 | #endif |
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| 59 | |
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