Module Name: src Committed By: matt Date: Tue Jan 15 02:03:31 UTC 2013
Added Files: src/common/lib/libc/arch/arm/string: strchr_naive.S strrchr_naive.S Log Message: Add simple/small versions of strchr/strrchr for ARM. To generate a diff of this commit: cvs rdiff -u -r0 -r1.1 src/common/lib/libc/arch/arm/string/strchr_naive.S \ src/common/lib/libc/arch/arm/string/strrchr_naive.S Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Added files: Index: src/common/lib/libc/arch/arm/string/strchr_naive.S diff -u /dev/null src/common/lib/libc/arch/arm/string/strchr_naive.S:1.1 --- /dev/null Tue Jan 15 02:03:31 2013 +++ src/common/lib/libc/arch/arm/string/strchr_naive.S Tue Jan 15 02:03:30 2013 @@ -0,0 +1,44 @@ +/*- + * Copyright (c) 2013 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Matt Thomas of 3am Software Foundry. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ +#include <machine/asm.h> + +RCSID("$NetBSD: strchr_naive.S,v 1.1 2013/01/15 02:03:30 matt Exp $") + +/* LINTSTUB: char * strchr(const char *, int) */ +ENTRY(strchr) + mov ip, r0 /* using r0 as return value */ + mov r0, #0 /* default to no match */ + and r1, r1, #0xff /* restrict to a byte value */ +1: ldrb r3, [ip], #1 /* read a byte */ + cmp r3, r1 /* does it match? */ + subeq r0, ip, #1 /* yes, set return value to point to it */ + teqne r3, #0 /* no, was it a NUL? */ + bne 1b /* no, get next byte */ + RET +END(strchr) Index: src/common/lib/libc/arch/arm/string/strrchr_naive.S diff -u /dev/null src/common/lib/libc/arch/arm/string/strrchr_naive.S:1.1 --- /dev/null Tue Jan 15 02:03:31 2013 +++ src/common/lib/libc/arch/arm/string/strrchr_naive.S Tue Jan 15 02:03:30 2013 @@ -0,0 +1,44 @@ +/*- + * Copyright (c) 2013 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Matt Thomas of 3am Software Foundry. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ +#include <machine/asm.h> + +RCSID("$NetBSD: strrchr_naive.S,v 1.1 2013/01/15 02:03:30 matt Exp $") + +/* LINTSTUB: char * strrchr(const char *, int) */ +ENTRY(strrchr) + mov ip, r0 /* using r0 as return value */ + mov r0, #0 /* default to no match */ + and r1, r1, #0xff /* restrict to a byte value */ +1: ldrb r3, [ip], #1 /* read a byte */ + cmp r3, r1 /* does it match? */ + subeq r0, ip, #1 /* yes, set return value to point to it */ + teq r3, #0 /* was it a NUL? */ + bne 1b /* no, get next byte */ + RET +END(strrchr)