Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <elf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) main(int argc, char **argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 	unsigned char ei[EI_NIDENT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 	union { short s; char c[2]; } endian_test;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	if (fread(ei, 1, EI_NIDENT, stdin) != EI_NIDENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 		fprintf(stderr, "Error: input truncated\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	if (memcmp(ei, ELFMAG, SELFMAG) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 		fprintf(stderr, "Error: not ELF\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	switch (ei[EI_CLASS]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	case ELFCLASS32:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		printf("#define KERNEL_ELFCLASS ELFCLASS32\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	case ELFCLASS64:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		printf("#define KERNEL_ELFCLASS ELFCLASS64\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		exit(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	switch (ei[EI_DATA]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	case ELFDATA2LSB:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		printf("#define KERNEL_ELFDATA ELFDATA2LSB\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	case ELFDATA2MSB:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 		printf("#define KERNEL_ELFDATA ELFDATA2MSB\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		exit(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	if (sizeof(unsigned long) == 4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 		printf("#define HOST_ELFCLASS ELFCLASS32\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	} else if (sizeof(unsigned long) == 8) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 		printf("#define HOST_ELFCLASS ELFCLASS64\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	endian_test.s = 0x0102;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	if (memcmp(endian_test.c, "\x01\x02", 2) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 		printf("#define HOST_ELFDATA ELFDATA2MSB\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	else if (memcmp(endian_test.c, "\x02\x01", 2) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 		printf("#define HOST_ELFDATA ELFDATA2LSB\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 		exit(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }