mccibootloaderplatform_getsignatureblock.c

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/*
 
Module: mccibootloaderplatform_getsignatureblock.c
 
Function:
        McciBootloaderPlatform_getSignatureBlock()
 
Copyright and License:
        This file copyright (C) 2021 by
 
                MCCI Corporation
                3520 Krums Corners Road
                Ithaca, NY  14850
 
        See accompanying LICENSE file for copyright and license information.
 
Author:
        Terry Moore, MCCI Corporation   April 2021
 
*/
 
 
#include "mcci_bootloader_platform.h"
 
#include "mcci_bootloader_appinfo.h"
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/****************************************************************************\
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|       Manifest constants & typedefs.
|
\****************************************************************************/
 
 
 
/****************************************************************************\
|
|       Read-only data.
|
\****************************************************************************/
 
 
 
/****************************************************************************\
|
|       Variables.
|
\****************************************************************************/
 
␌
/*
 
Name:   McciBootloaderPlatform_getSignatureBlock()
 
Function:
        Fetch pointer to signature block given appinfo block.
 
Definition:
        McciBootloader_SignatureBlock_t McciBootloaderPlatform_getSignatureBlock(
                const McciBootloader_AppInfo_t *pAppInfo
                );
 
Description:
        The address of the signature block is computed based on the contents of
        the app info block.
 
Returns:
        Pointer to signature block, or NULL if incoming arg is NULL.
 
Notes:
        The address is computed relative to the targetAddress in the app info
        block. The AppInfo block might not be in its target location.
 
*/
 
#define FUNCTION "McciBootloaderPlatform_getSignatureBlock"
 
const McciBootloader_SignatureBlock_t *
McciBootloaderPlatform_getSignatureBlock(
        const McciBootloader_AppInfo_t *pAppInfo
        )
        {
        if (pAppInfo == NULL)
                return NULL;
 
        return (const McciBootloader_SignatureBlock_t *)(
                        pAppInfo->targetAddress + pAppInfo->imagesize
                        );
        }
 
#undef FUNCTION
 
/**** end of mccibootloaderplatform_getsignatureblock.c ****/