drivers/sound/hex2hex.c

   1 /*
   2  * hex2hex reads stdin in Intel HEX format and produces an
   3  * (unsigned char) array which contains the bytes and writes it
   4  * to stdout using C syntax
   5  */
   6
   7 #include <stdio.h>
   8 #include <string.h>
   9 #include <stdlib.h>
  10
  11 #define ABANDON(why) { fprintf(stderr, "%s\n", why); exit(1); }
  12 #define MAX_SIZE (256*1024)
  13 unsigned char buf[MAX_SIZE];
  14
  15 int loadhex(FILE *inf, unsigned char *buf)
  16 {
  17         int l=0, c, i;
  18
  19         while ((c=getc(inf))!=EOF)
  20         {
  21                 if (c == ':')   /* Sync with beginning of line */
  22                 {
  23                         int n, check;
  24                         unsigned char sum;
  25                         int addr;
  26                         int linetype;
  27
  28                         if (fscanf(inf, "%02x", &n) != 1)
  29                            ABANDON("File format error");
  30                         sum = n;
  31
  32                         if (fscanf(inf, "%04x", &addr) != 1)
  33                            ABANDON("File format error");
  34                         sum += addr/256;
  35                         sum += addr%256;
  36
  37                         if (fscanf(inf, "%02x", &linetype) != 1)
  38                            ABANDON("File format error");
  39                         sum += linetype;
  40
  41                         if (linetype != 0)
  42                            continue;
  43
  44                         for (i=0;i<n;i++)
  45                         {
  46                                 if (fscanf(inf, "%02x", &c) != 1)
  47                                    ABANDON("File format error");
  48                                 if (addr >= MAX_SIZE)
  49                                    ABANDON("File too large");
  50                                 buf[addr++] = c;
  51                                 if (addr > l)
  52                                    l = addr;
  53                                 sum += c;
  54                         }
  55
  56                         if (fscanf(inf, "%02x", &check) != 1)
  57                            ABANDON("File format error");
  58
  59                         sum = ~sum + 1;
  60                         if (check != sum)
  61                            ABANDON("Line checksum error");
  62                 }
  63         }
  64
  65         return l;
  66 }
  67
  68 int main( int argc, const char * argv [] )
  69 {
  70         const char * varline;
  71         int i,l;
  72         int id=0;
  73
  74         if(argv[1] && strcmp(argv[1], "-i")==0)
  75         {
  76                 argv++;
  77                 argc--;
  78                 id=1;
  79         }
  80         if(argv[1]==NULL)
  81         {
  82                 fprintf(stderr,"hex2hex: [-i] filename\n");
  83                 exit(1);
  84         }
  85         varline = argv[1];
  86         l = loadhex(stdin, buf);
  87
  88         printf("/*\n *\t Computer generated file. Do not edit.\n */\n");
  89         printf("static int %s_len = %d;\n", varline, l);
  90         printf("static unsigned char %s[] %s = {\n", varline, id?"__initdata":"");
  91
  92         for (i=0;i<l;i++)
  93         {
  94                 if (i) printf(",");
  95                 if (i && !(i % 16)) printf("\n");
  96                 printf("0x%02x", buf[i]);
  97         }
  98
  99         printf("\n};\n\n");
 100         return 0;
 101 }