1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <string.h>
4 #include <elf.h>
5
6 int
7 main(int argc, char **argv)
8 {
9 unsigned char ei[EI_NIDENT];
10 union { short s; char c[2]; } endian_test;
11
12 if (argc != 2) {
13 fprintf(stderr, "Error: no arch\n");
14 }
15 if (fread(ei, 1, EI_NIDENT, stdin) != EI_NIDENT) {
16 fprintf(stderr, "Error: input truncated\n");
17 return 1;
18 }
19 if (memcmp(ei, ELFMAG, SELFMAG) != 0) {
20 fprintf(stderr, "Error: not ELF\n");
21 return 1;
22 }
23 switch (ei[EI_CLASS]) {
24 case ELFCLASS32:
25 printf("#define KERNEL_ELFCLASS ELFCLASS32\n");
26 break;
27 case ELFCLASS64:
28 printf("#define KERNEL_ELFCLASS ELFCLASS64\n");
29 break;
30 default:
31 exit(1);
32 }
33 switch (ei[EI_DATA]) {
34 case ELFDATA2LSB:
35 printf("#define KERNEL_ELFDATA ELFDATA2LSB\n");
36 break;
37 case ELFDATA2MSB:
38 printf("#define KERNEL_ELFDATA ELFDATA2MSB\n");
39 break;
40 default:
41 exit(1);
42 }
43
44 if (sizeof(unsigned long) == 4) {
45 printf("#define HOST_ELFCLASS ELFCLASS32\n");
46 } else if (sizeof(unsigned long) == 8) {
47 printf("#define HOST_ELFCLASS ELFCLASS64\n");
48 }
49
50 endian_test.s = 0x0102;
51 if (memcmp(endian_test.c, "\x01\x02", 2) == 0)
52 printf("#define HOST_ELFDATA ELFDATA2MSB\n");
53 else if (memcmp(endian_test.c, "\x02\x01", 2) == 0)
54 printf("#define HOST_ELFDATA ELFDATA2LSB\n");
55 else
56 exit(1);
57
58 if ((strcmp(argv[1], "h8300") == 0)
59 || (strcmp(argv[1], "blackfin") == 0))
60 printf("#define MODULE_SYMBOL_PREFIX \"_\"\n");
61 else
62 printf("#define MODULE_SYMBOL_PREFIX \"\"\n");
63
64 return 0;
65 }
66
67
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