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Annotation of qemu/roms/SLOF/other-licence/common/module_entry.c, revision 1.1

1.1     ! root        1: /******************************************************************************
        !             2:  * Copyright (c) 2004, 2008 IBM Corporation
        !             3:  * All rights reserved.
        !             4:  * This program and the accompanying materials
        !             5:  * are made available under the terms of the BSD License
        !             6:  * which accompanies this distribution, and is available at
        !             7:  * http://www.opensource.org/licenses/bsd-license.php
        !             8:  *
        !             9:  * Contributors:
        !            10:  *     IBM Corporation - initial implementation
        !            11:  *****************************************************************************/
        !            12: 
        !            13: #include "netdriver_int.h"
        !            14: 
        !            15: extern snk_module_t snk_module_interface;
        !            16: 
        !            17: snk_kernel_t *snk_kernel_interface = 0;
        !            18: 
        !            19: extern int
        !            20: check_driver( pci_config_t *pci_conf );
        !            21: 
        !            22: 
        !            23: static void*
        !            24: memset( void *dest, int c, size_t n )
        !            25: {
        !            26:        while( n-- ) {
        !            27:                *( char * ) dest++ = ( char ) c;
        !            28:        }
        !            29:        return dest;
        !            30: }
        !            31: 
        !            32: 
        !            33: extern char __bss_start;
        !            34: extern char __bss_size;
        !            35: 
        !            36: snk_module_t*
        !            37: module_init(snk_kernel_t *snk_kernel_int, pci_config_t *pciconf)
        !            38: {
        !            39:        /* Need to clear bss, heavy linker script dependency, expert change only */
        !            40:        char              *bss      = &__bss_start;
        !            41:        unsigned long long bss_size = (unsigned long long) &__bss_size;
        !            42: 
        !            43:        if (((unsigned long long) bss) + bss_size >= 0xFF00000 
        !            44:         || bss_size >= 0x2000000) {
        !            45:                snk_kernel_int->print("BSS size (%llu bytes) is too big!\n", bss_size);
        !            46:                return 0;
        !            47:        }
        !            48: 
        !            49:        memset(bss, 0, bss_size);
        !            50: 
        !            51:        if (snk_kernel_int->version != snk_module_interface.version) {
        !            52:                return 0;
        !            53:        }
        !            54: 
        !            55:        snk_kernel_interface = snk_kernel_int;
        !            56: 
        !            57:        /* Check if this is the right driver */
        !            58:        if (check_driver(pciconf) < 0) {
        !            59:                return 0;
        !            60:        }
        !            61: 
        !            62:        snk_module_interface.link_addr = module_init;
        !            63:        return &snk_module_interface;
        !            64: }

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