98ebb25e56
For setjmp() and longjmp(), put the signal mask where it's supposed to be, instead of in the space reserved for fp regs.
52 lines
1.8 KiB
ArmAsm
52 lines
1.8 KiB
ArmAsm
/* $NetBSD: strncmp.S,v 1.2 2003/04/05 23:08:52 bjh21 Exp $ */
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/*
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* Copyright (c) 2002 ARM Ltd
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the company may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <machine/asm.h>
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__FBSDID("$FreeBSD$");
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ENTRY(strncmp)
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/* if ((len - 1) < 0) return 0 */
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subs r2, r2, #1
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movmi r0, #0
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movmi pc, lr
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/* ip == last src address to compare */
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add ip, r0, r2
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1:
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ldrb r2, [r0], #1
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ldrb r3, [r1], #1
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cmp ip, r0
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cmpcs r2, #1
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cmpcs r2, r3
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beq 1b
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sub r0, r2, r3
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RET
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