csl_intchookisr.c

来自「TI达芬奇dm644x各硬件模块测试代码」· C语言 代码 · 共 68 行

/*  ============================================================================
 *   Copyright (c) Texas Instruments Inc 2002, 2003, 2004, 2005
 *
 *   Use of this software is controlled by the terms and conditions found in the
 *   license agreement under which this software has been supplied.
 *   ===========================================================================
 */

/** @file  csl_intcHookIsr.c
 *
 *  @brief  File for functional layer of CSL API @a CSL_intcHookIsr()
 *
 *  Description
 *  - @a CSL_intcHookIsr() function definition
 *
 *  Path: \\(CSLPATH)\\soc\\davinci\\arm9\\src\\intc
 *
 *  Modification
 *  - Modified on: 2004/04/15
 *  - Reason: creation
 *
 *  Date   2004/04/15
 *  Author RG Kiran
 */

#include <csl_intc.h>

#include <csl_sysData.h>

#include <_csl_intc0.h>

/** ============================================================================
 *  @n@b CSL_intcHookIsr
 *
 *  @b Description
 *  @n Hook up an exception handler
 *     This API hooks up the handler to the specified exception.
 *     Note: In this case, it is done by inserting a B(ranch) instruction
 *     to the handler. Because of the restriction in the instruction
 *     th handler must be within 32MB of the exception vector.
 *     Also, the function assumes that the exception vector table is
 *     located at its default ("low") address.
 *
 *  @b Arguments
 *  @verbatim
        vectId       Exception identifier

        isrAddr      Pointer to the handler
    @endverbatim
 *
 *  @b Example:
 *  @verbatim
        CSL_intcHookIsr(CSL_INTC_VECTID_UNDEF, (void *)myUndefExceptionHandler);
    @endverbatim
 * =============================================================================
 */
#pragma CODE_SECTION (CSL_intcHookIsr, ".text:csl_section:intc");
void CSL_intcHookIsr (
    CSL_IntcVectId      vectId,
    void               *isrAddr
)
{
    if (vectId >= CSL_INTC_VECTID_RESET && vectId <= CSL_INTC_VECTID_FIQ) {
        _CSL_intc0HookVector((_CSL_Intc0Exception)vectId, isrAddr);
    }
}