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Add EABI support routines to raise SIGFPE on integer divide by 0.

This commit is contained in:
matt 2013-01-23 07:38:19 +00:00
parent 632dd00817
commit bb2928cbda
2 changed files with 118 additions and 0 deletions
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59
common/lib/libc/arch/arm/gen/__aeabi_idiv0.c Normal file
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/*-
* Copyright (c) 2012 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 <sys/cdefs.h>
__RCSID("$NetBSD: __aeabi_idiv0.c,v 1.1 2013/01/23 07:38:19 matt Exp $");
#if !defined(_KERNEL)
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/signal.h>
#include <sys/siginfo.h>
#endif
#include <arm/aeabi.h>
int
__aeabi_idiv0(int result)
{
#ifdef _KERNEL
#else
siginfo_t info;
memset(&info, 0, sizeof info);
info.si_signo = SIGFPE;
info.si_pid = getpid();
info.si_uid = geteuid();
info.si_code = FPE_INTDIV;
sigqueueinfo(getpid(), &info);
#endif
return result;
}

59
common/lib/libc/arch/arm/gen/__aeabi_ldiv0.c Normal file
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/*-
* Copyright (c) 2012 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 <sys/cdefs.h>
__RCSID("$NetBSD: __aeabi_ldiv0.c,v 1.1 2013/01/23 07:38:19 matt Exp $");
#if !defined(_KERNEL)
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/signal.h>
#include <sys/siginfo.h>
#endif
#include <arm/aeabi.h>
long long
__aeabi_ldiv0(long long result)
{
#ifdef _KERNEL
#else
siginfo_t info;
memset(&info, 0, sizeof info);
info.si_signo = SIGFPE;
info.si_pid = getpid();
info.si_uid = geteuid();
info.si_code = FPE_INTDIV;
sigqueueinfo(getpid(), &info);
#endif
return result;
}