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41 lines
1.3 KiB
ArmAsm
41 lines
1.3 KiB
ArmAsm
/* Search a character in a block of memory. 64 bit S/390 version.
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Copyright (C) 2001, 2003 Free Software Foundation, Inc.
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Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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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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<http://www.gnu.org/licenses/>. */
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/* INPUT PARAMETERS
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%r2 = address to memory area
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%r3 = character to find
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%r4 = number of bytes to search. */
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#include "sysdep.h"
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#include "asm-syntax.h"
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.text
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ENTRY(memchr)
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lghi %r0,0xff
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ngr %r0,%r3
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lgr %r1,%r2
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la %r2,0(%r4,%r1)
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0: srst %r2,%r1
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jo 0b
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brc 13,1f
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slgr %r2,%r2
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1: br %r14
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END(memchr)
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libc_hidden_builtin_def (memchr)
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