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Add __aeabi_memset to libkern, implemented using memset, as clang may

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generate calls to it.
This commit is contained in:
andrew 2013-03-16 23:11:55 +00:00
parent c2c41ac818
commit e271e57551
2 changed files with 50 additions and 0 deletions
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1
sys/conf/files.arm
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@ -78,6 +78,7 @@ libkern/arm/ffs.S standard
libkern/arm/ldivmod.S standard
libkern/arm/ldivmod_helper.c standard
libkern/arm/memcpy.S standard
libkern/arm/memset.S standard
libkern/arm/muldi3.c standard
libkern/ashldi3.c standard
libkern/ashrdi3.c standard

49
sys/libkern/arm/memset.S Normal file
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@ -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