e1f5aeaf51
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@565 42af7a65-404d-4744-a932-0658087f49c3
133 lines
4.2 KiB
C
133 lines
4.2 KiB
C
/***************************************************************************
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* z16f/z16f_sysexec.c
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*
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* Copyright (C) 2008 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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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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*
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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
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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***************************************************************************/
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/***************************************************************************
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* Included Files
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***************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <debug.h>
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#include <nuttx/arch.h>
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#include "chip/chip.h"
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#include "os_internal.h"
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#include "up_internal.h"
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/***************************************************************************
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* Definitions
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***************************************************************************/
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#ifdef CONFIG_ARCH_LOWPUTC
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# define SYSDBG lib_lowprintf
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#else
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# define SYSDBG lib_rawprintf
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#endif
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/***************************************************************************
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* Private Types
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***************************************************************************/
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/***************************************************************************
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* Private Functions
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***************************************************************************/
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/***************************************************************************
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* Global Functions
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***************************************************************************/
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/***************************************************************************
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* Function: z16f_sysexec
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*
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* Description:
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* Handle a Z16F system execption
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*
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***************************************************************************/
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void z16f_sysexec(FAR chipreg_t *regs)
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{
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int errcode = OSERR_ERREXCEPTION;
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uint16 excp;
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/* Save that register reference so that it can be used for built-in
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* diagnostics.
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*/
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current_regs = regs;
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/* The cause of the the system exception is indicated in the SYSEXCPH&L
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* registers
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*/
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excp = getreg16(Z16F_SYSEXCP);
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if ((excp & Z16F_SYSEXCP_SPOVF) != 0)
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{
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SYSDBG("SP OVERFLOW\n");
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}
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if ((excp & Z16F_SYSEXCP_PCOVF) != 0)
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{
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SYSDBG("PC OVERFLOW\n");
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}
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if ((excp & Z16F_SYSEXCP_DIV0) != 0)
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{
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SYSDBG("Divide by zero\n");
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}
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if ((excp & Z16F_SYSEXCP_DIVOVF) != 0)
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{
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SYSDBG("Divide overflow\n");
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}
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if ((excp & Z16F_SYSEXCP_ILL) != 0)
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{
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SYSDBG("Illegal instruction\n");
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errcode = OSERR_UNDEFINEDINSN;
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}
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if ((excp & Z16F_SYSEXCP_WDTOSC) != 0)
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{
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SYSDBG("WDT oscillator failure\n");
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}
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if ((excp & Z16F_SYSEXCP_PRIOSC) != 0)
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{
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SYSDBG("Primary Oscillator Failure\n");
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}
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if ((excp & Z16F_SYSEXCP_WDT) != 0)
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{
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SYSDBG("Watchdog timeout\n");
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z16f_reset();
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}
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PANIC(errcode);
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}
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