root/drivers/sound/hex2hex.h

/* */

INCLUDED FROM

DEFINITIONS

1. loadhex
2. hex2hex

   1 /*
   2  * This file is a part of configure.c
   3  *
   4  * hex2hex reads an input file in Intel HEX format and produces
   5  * an (unsigned char) array which contains the bytes and writes it to the
   6  * output file using C syntax
   7  */
   8 
   9 #define MAX_SIZE (256*1024)
  10 #define ABANDON(why) { \
  11                 fprintf(stderr, "%s: " why "\n", source); \
  12                 return 0; \
  13                 }
  14 
  15 int loadhex(FILE *inf, unsigned char *buf, char *source)
     /*  */
  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 hex2hex(char *source, char *target, char *varline)
     /*  */
  69 {
  70         FILE *inf, *outf;
  71 
  72         int i,l;
  73         unsigned char buf[MAX_SIZE];
  74 
  75         if ((inf=fopen(source, "r"))==NULL)
  76         {
  77                 perror(source);
  78                 return 0;
  79         }
  80 
  81         if ((outf=fopen(target, "w"))==NULL)
  82         {
  83                 perror(target);
  84                 fclose(inf);
  85                 return 0;
  86         }
  87 
  88         l=loadhex(inf, buf, source);
  89         if (l<=0)
  90         {
  91            fclose(inf);
  92            fclose(outf);
  93            return l;
  94         }
  95 
  96 
  97         fprintf(outf, "/*\n *\t Computer generated file. Do not edit.\n */\n");
  98         fprintf(outf, "static int %s_len = %d;\n", varline, l);
  99         fprintf(outf, "static unsigned char %s[] = {\n", varline);
 100 
 101         for (i=0;i<l;i++)
 102         {
 103                 if (i) fprintf(outf, ",");
 104                 if (i && !(i % 16)) fprintf(outf, "\n");
 105                 fprintf(outf, "0x%02x", buf[i]);
 106         }
 107 
 108         fprintf(outf, "\n};\n\n");
 109         fclose(inf);
 110         fclose(outf);
 111         return 1;
 112 }

/* */