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41 lines
1.3 KiB
ArmAsm
41 lines
1.3 KiB
ArmAsm
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/* Search a character in a block of memory. For IBM S390
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Copyright (C) 2000 Free Software Foundation, Inc.
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Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/*
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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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*/
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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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lhi %r0,0xff
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nr %r0,%r3
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lr %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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slr %r2,%r2
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1: br %r14
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END(memchr)
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