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Annotation of qemu/roms/SLOF/clients/net-snk/kernel/crt0.c, revision 1.1.1.2

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 <stdlib.h>
                     14: #include <string.h>
1.1.1.2 ! root       15: 
1.1       root       16: extern int main (int, char**);
                     17: extern int callback (int, char **);
                     18: 
1.1.1.2 ! root       19: int _start(char *arg_string, long len);
        !            20: unsigned long callback_entry(void *base, unsigned long len);
        !            21: 
        !            22: 
1.1       root       23: #define MAX_ARGV 10
1.1.1.2 ! root       24: static int
1.1       root       25: gen_argv(const char *arg_string, int len, char* argv[])
                     26: {
                     27:   const char *str, *str_end, *arg_string_end = arg_string + len;
                     28:   int i;
                     29: 
                     30:   str = arg_string;
                     31:   for (i = 0; i < MAX_ARGV; i++)
                     32:     {
                     33:       str_end = str;
                     34: 
                     35:       while((*str_end++ != ' ') && (str_end <= arg_string_end));
                     36: 
                     37:       argv[i] = malloc(str_end-str);
                     38: 
                     39:       memcpy (argv[i], str, str_end-str-1);
                     40:       argv[i][str_end-str-1] = '\0';
                     41:       str = str_end-1;
                     42:       while(*(++str) == ' ');
                     43:       if (str >= arg_string_end)
                     44:        break;
                     45:     }
                     46:   return i+1;
                     47: }
                     48: 
                     49: 
                     50: 
                     51: int
                     52: _start(char * arg_string, long len)
                     53: {
                     54:     int rc;
                     55:     int argc;
                     56:     char* argv[MAX_ARGV];
                     57: 
                     58:     argc = gen_argv(arg_string, len, argv);
                     59: 
                     60:     rc = main(argc, argv);
                     61: 
                     62:     return rc;
                     63: }
                     64: 
                     65: /*
                     66:  * Takes a Forth representation of a string and generates an argument array,
                     67:  * then calls callback().
                     68:  */
                     69: unsigned long
                     70: callback_entry(void *base, unsigned long len) {
                     71:        char *argv[MAX_ARGV];
                     72:        int argc;
                     73: 
                     74:        argc = gen_argv(base, len, argv);
                     75: 
                     76:        return (callback(argc, argv));
                     77: }
                     78: 

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