/* excArchShow.c - ARM exception show facilities *//* Copyright 1996-1997 Wind River Systems, Inc. */#include "copyright_wrs.h"/*modification history--------------------01c,24feb98,jgn  make logMsg call indirect for scalability (SPR #20625)01b,27oct97,kkk  took out "***EOF***" line from end of file.01a,25jun96,cdp  created.*//*This module contains ARM architecture dependent portions of theexception handling facilities.  See excLib for the portions that arearchitecture independent.SEE ALSO: dbgLib, sigLib, intLib, "Debugging"*/#include "vxWorks.h"#include "esf.h"#include "iv.h"#include "taskLib.h"#include "errno.h"#include "string.h"#include "logLib.h"#include "stdio.h"#include "stdio.h"#include "fioLib.h"#include "private/funcBindP.h"#include "private/kernelLibP.h"typedef struct {    UINT32	vecAddr;	/* exception vector */    char * 	excMsg;		/* exception message */    } EXC_MSG_TBL;/* locals *//*  * Exception error messages. * These are used by the exception printing routine. */LOCAL EXC_MSG_TBL excMsgTbl [] = {    {EXC_OFF_RESET,	"Branch through zero"},    {EXC_OFF_UNDEF,	"Undefined instruction"},    {EXC_OFF_SWI,	"Software interrupt"},    {EXC_OFF_PREFETCH,	"Instruction prefetch abort"},    {EXC_OFF_DATA,	"Data abort"},    {EXC_OFF_IRQ,	"Interrupt"},    {EXC_OFF_FIQ,	"Fast interrupt"},    {0, NULL}    };/* forward declarations */LOCAL void excInfoShow (EXC_INFO *pExcInfo, BOOL doBell);LOCAL void excIntInfoShow (void);LOCAL void excPanicShow (int vecOff, ESF *pEsf, REG_SET *pRegs,			 EXC_INFO *pExcInfo);/********************************************************************************* excShowInit - initialize exception show facility** NOMANUAL*/STATUS excShowInit (void)    {    _func_excInfoShow	= (FUNCPTR) excInfoShow;    _func_excIntHook	= (FUNCPTR) excIntInfoShow;    _func_excPanicHook	= (FUNCPTR) excPanicShow;    return OK;    }/********************************************************************************* excInfoShow - print exception info** NOMANUAL*/LOCAL void excInfoShow     (    EXC_INFO *	pExcInfo,    BOOL	doBell    )    {    FAST int valid  = pExcInfo->valid;    FAST UINT32 vecAddr = pExcInfo->vecAddr;    FAST int i;    /* print each piece of info if valid */    if (valid & EXC_INFO_VECADDR)	{	for (i = 0; excMsgTbl[i].vecAddr != vecAddr; i++)	    {	    if (excMsgTbl[i].excMsg == NULL)	        break;	    }	if (excMsgTbl[i].excMsg != NULL)	    printExc ("\n%s\n", (int) excMsgTbl[i].excMsg, 0, 0, 0, 0);		else	    printExc ("\nTrap to uninitialized vector address 0x%x.\n",		      vecAddr, 0, 0, 0, 0);	}    if (valid & EXC_INFO_PC)	printExc ("Exception address: 0x%08x\n", 		  (int) pExcInfo->pc, 0, 0, 0, 0);    if (valid & EXC_INFO_CPSR)	printExc ("Current Processor Status Register: 0x%08x\n", 		  (int) pExcInfo->cpsr, 0, 0, 0, 0);    if (doBell)	printExc ("Task: %#x \"%s\"\007\n", (int)taskIdCurrent, 		  (int)taskName ((int)taskIdCurrent), 0, 0, 0);    }/********************************************************************************* excIntInfoShow - print out uninitialised interrupt info*/LOCAL void excIntInfoShow    (    )    {    if (Q_FIRST (&activeQHead) == NULL)		/* pre kernel */	printExc ("uninitialised interrupt vector", 0, 0, 0, 0, 0);    else	if (_func_logMsg != NULL)	    _func_logMsg ("uninitialised interrupt vector", 0, 0, 0, 0, 0, 0);    }/********************************************************************************* excPanicShow - exception at interrupt level** This routine is called if an exception is caused at interrupt* level.  We can't handle it in the usual way.  Instead, we save info in* sysExcMsg and trap to rom monitor.*/LOCAL void excPanicShow    (    int		vecOff,		/* exception vector number */    ESF *	pEsf,		/* pointer to exception stack frame */    REG_SET *	pRegs,		/* pointer to register info on stack */    EXC_INFO *	pExcInfo	/* parsed exception information */    )    {    printExc (" \nException at interrupt level:\n", 0, 0, 0, 0, 0);    excInfoShow (pExcInfo, FALSE);	/* print the message into sysExcMsg */    printExc ("Regs at 0x%x\n", (int) pRegs, 0, 0, 0, 0);    }