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author | andrew <andrew@FreeBSD.org> | 2013-03-16 23:11:55 +0000 |
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committer | andrew <andrew@FreeBSD.org> | 2013-03-16 23:11:55 +0000 |
commit | e271e575514044f71031184c0e56a57acbb7e6cd (patch) | |
tree | d82872ff321d5a21cfbb013e5f4aaba24143a23d /sys/libkern | |
parent | c2c41ac818b26f3cd71a73cfc6a75d96551593cf (diff) | |
download | FreeBSD-src-e271e575514044f71031184c0e56a57acbb7e6cd.zip FreeBSD-src-e271e575514044f71031184c0e56a57acbb7e6cd.tar.gz |
Add __aeabi_memset to libkern, implemented using memset, as clang may
generate calls to it.
Diffstat (limited to 'sys/libkern')
-rw-r--r-- | sys/libkern/arm/memset.S | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sys/libkern/arm/memset.S b/sys/libkern/arm/memset.S new file mode 100644 index 0000000..57d2507 --- /dev/null +++ b/sys/libkern/arm/memset.S @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2013 Andrew Turner + * All rights reserved. + * + * 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 AUTHOR 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 AUTHOR 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> +__FBSDID("$FreeBSD$"); + +#ifdef __ARM_EABI__ + +/* + * This implements + * void __aeabi_memset(void *dest, size_t len, int c) + * by calling: + * void *memset(dest, c, len) + * + * The arguments are in r0-r2, r3 can be used as a scratch register. + */ +ENTRY_NP(__aeabi_memset) + mov r3, r2 + mov r2, r1 + mov r1, r3 + b memset +END(__aeabi_memset) + +#endif + |