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view src/nucleus/eri.c @ 268:f2e52cab0a73

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abb_inth.c: check all interrupt causes, not just one The original code used if - else if - else if etc constructs, thus the first detected interrupt was the only one handled. However, Iota ITSTATREG is a clear-on-read register, thus if we only handle the first detected interrupt and skip checking the others, then the other interrupts will be lost, if more than one interrupt happened to occur in one ABB interrupt handling cycle - a form of rare race condition. Change the code to check all interrupts that were read in this cycle.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 13 Jun 2021 18:17:53 +0000
parents 4e78acac3d88
children
line wrap: on
line source

/*************************************************************************/
/*                                                                       */
/*               Copyright Mentor Graphics Corporation 2002              */
/*                         All Rights Reserved.                          */
/*                                                                       */
/* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS  */
/* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS   */
/* SUBJECT TO LICENSE TERMS.                                             */
/*                                                                       */
/*************************************************************************/

/*************************************************************************/
/*                                                                       */
/* FILE NAME                                               VERSION       */
/*                                                                       */
/*      eri.c                                          Nucleus PLUS 1.14 */
/*                                                                       */
/* COMPONENT                                                             */
/*                                                                       */
/*      ER - Error Management                                            */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This file contains the initialization routine for the Error      */
/*      Management component.                                            */
/*                                                                       */
/* DATA STRUCTURES                                                       */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* FUNCTIONS                                                             */
/*                                                                       */
/*      ERI_Initialize                      Error Management Initialize  */
/*                                                                       */
/* DEPENDENCIES                                                          */
/*                                                                       */
/*      er_extr.h                           Error management interfaces  */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*          DATE                    REMARKS                              */
/*                                                                       */
/*      03-01-1993      Created initial version 1.0                      */
/*      04-19-1993      Verified version 1.0                             */
/*      03-01-1994      Replaced void with VOID,                         */
/*                      resulting in version 1.1                         */
/*                                                                       */
/*      03-18-1994      Verified version 1.1                             */
/*      04-17-1996      updated to version 1.2                           */
/*      03-24-1998      Released version 1.3.                            */
/*      03-26-1999      Released 1.11m (new release                      */
/*                        numbering scheme)                              */
/*      04-07-1999      Release 1.11mA                                   */
/*      04-17-2002      Released version 1.13m                           */
/*      11-07-2002      Released version 1.14                            */
/*************************************************************************/
#define         NU_SOURCE_FILE


#include        "er_extr.h"               /* Error management interfaces */
#include        "er_defs.h"

/* Define inter-component global data references.  */

extern  INT     ERD_Error_Code;

#ifdef NU_DEBUG_MEMORY
    extern UINT32 ERD_AllocationCount;
    extern UINT32 ERD_AllocationSequenceCounter;
    extern UINT32 ERD_TotalMemoryAllocated;
    extern UINT32 ERD_TotalMemoryAllocations;
    extern UINT32 ERD_MaxTotalMemoryAllocated;
    extern UINT32 ERD_MaxTotalMemoryAllocations;

    extern ER_DEBUG_ALLOCATION *ERD_RecentAllocation;
#endif /* NU_DEBUG_MEMORY */

#ifdef NU_DEBUG
extern UNSIGNED ERD_Assert_Count;
#endif

#ifdef          NU_ERROR_STRING
extern  CHAR    ERD_Error_String[];
#endif

/*************************************************************************/
/*                                                                       */
/* FUNCTION                                                              */
/*                                                                       */
/*      ERI_Initialize                                                   */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This function initializes the data structures of the Error       */
/*      management component (ER).                                       */
/*                                                                       */
/* CALLED BY                                                             */
/*                                                                       */
/*      INC_Initialize                      System initialization        */
/*                                                                       */
/* CALLS                                                                 */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* INPUTS                                                                */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* OUTPUTS                                                               */
/*                                                                       */
/*      ERD_Error_Code                      Contains system error code   */
/*      ERD_Error_String                    ASCII error code string      */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*         DATE                    REMARKS                               */
/*                                                                       */
/*      03-01-1993      Created initial version 1.0                      */
/*      04-19-1993      Verified version 1.0                             */
/*      03-01-1994      Replaced void with VOID,                         */
/*                      resulting in version 1.1                         */
/*                                                                       */
/*      03-18-1994      Verified version 1.1                             */
/*                                                                       */
/*************************************************************************/
VOID  ERI_Initialize(VOID)
{

    /* Clear the system error code flag.  */
    ERD_Error_Code =  0;

#ifdef NU_DEBUG_MEMORY
    /* Clear variables that help find memory problems */
    ERD_AllocationCount              = 0;
    ERD_AllocationSequenceCounter    = 0;
    ERD_TotalMemoryAllocated         = 0;
    ERD_TotalMemoryAllocations       = 0;
    ERD_MaxTotalMemoryAllocated      = 0;
    ERD_MaxTotalMemoryAllocations    = 0;
    ERD_RecentAllocation = 0;
#endif /* NU_DEBUG_MEMORY */

#ifdef NU_DEBUG
    /* Clear count of failed assertions. */
    ERD_Assert_Count = 0;
#endif

#ifdef          NU_ERROR_STRING
    /* Make the error string null.  */
    ERD_Error_String[0] =  0;
#endif
}