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 }
102
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