142 lines
3.5 KiB
C
142 lines
3.5 KiB
C
/*-
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* Copyright (c) 2001 Jake Burkholder.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <machine/utrap.h>
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#include <machine/sysarch.h>
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#include <errno.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "fpu_extern.h"
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#include "__sparc_utrap_private.h"
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extern ssize_t __sys_write(int, const void *, size_t);
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extern int __sys_kill(pid_t, int);
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extern pid_t __sys_getpid(void);
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static const char *utrap_msg[] = {
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"reserved",
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"instruction access exception",
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"instruction access error",
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"instruction access protection",
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"illtrap instruction",
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"illegal instruction",
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"privileged opcode",
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"floating point disabled",
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"floating point exception ieee 754",
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"floating point exception other",
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"tag overflow",
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"division by zero",
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"data access exception",
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"data access error",
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"data access protection",
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"memory address not aligned",
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"privileged action",
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"async data error",
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"trap instruction 16",
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"trap instruction 17",
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"trap instruction 18",
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"trap instruction 19",
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"trap instruction 20",
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"trap instruction 21",
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"trap instruction 22",
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"trap instruction 23",
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"trap instruction 24",
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"trap instruction 25",
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"trap instruction 26",
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"trap instruction 27",
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"trap instruction 28",
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"trap instruction 29",
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"trap instruction 30",
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"trap instruction 31",
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};
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void
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__sparc_utrap(struct utrapframe *uf)
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{
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int sig;
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switch (uf->uf_type) {
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case UT_FP_EXCEPTION_IEEE_754:
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case UT_FP_EXCEPTION_OTHER:
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sig = __fpu_exception(uf);
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break;
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case UT_ILLEGAL_INSTRUCTION:
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sig = __emul_insn(uf);
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break;
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case UT_MEM_ADDRESS_NOT_ALIGNED:
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sig = __unaligned_fixup(uf);
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break;
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default:
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break;
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}
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if (sig) {
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__utrap_write("__sparc_utrap: fatal ");
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__utrap_write(utrap_msg[uf->uf_type]);
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__utrap_write("\n");
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__utrap_kill_self(sig);
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}
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UF_DONE(uf);
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}
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void
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__utrap_write(const char *str)
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{
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int berrno;
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berrno = errno;
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__sys_write(STDERR_FILENO, str, strlen(str));
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errno = berrno;
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}
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void
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__utrap_kill_self(int sig)
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{
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int berrno;
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berrno = errno;
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__sys_kill(__sys_getpid(), sig);
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errno = berrno;
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}
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void
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__utrap_panic(const char *msg)
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{
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__utrap_write(msg);
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__utrap_write("\n");
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__utrap_kill_self(SIGKILL);
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}
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