Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * hack-coff.c - hack the header of an xcoff file to fill in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * a few fields needed by the Open Firmware xcoff loader on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Power Macs but not initialized by objcopy.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * Copyright (C) Paul Mackerras 1997.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <fcntl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "rs6000.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define AOUT_MAGIC	0x010b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define get_16be(x)	((((unsigned char *)(x))[0] << 8) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 			 + ((unsigned char *)(x))[1])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define put_16be(x, v)	(((unsigned char *)(x))[0] = (v) >> 8, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 			 ((unsigned char *)(x))[1] = (v) & 0xff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define get_32be(x)	((((unsigned char *)(x))[0] << 24) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 			 + (((unsigned char *)(x))[1] << 16) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 			 + (((unsigned char *)(x))[2] << 8) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 			 + ((unsigned char *)(x))[3])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) main(int ac, char **av)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)     int fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)     int i, nsect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)     int aoutsz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)     struct external_filehdr fhdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)     AOUTHDR aout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)     struct external_scnhdr shdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)     if (ac != 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	fprintf(stderr, "Usage: hack-coff coff-file\n");
^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)     if ((fd = open(av[1], 2)) == -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	perror(av[2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	exit(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)     }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)     if (read(fd, &fhdr, sizeof(fhdr)) != sizeof(fhdr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	goto readerr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)     i = get_16be(fhdr.f_magic);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)     if (i != U802TOCMAGIC && i != U802WRMAGIC && i != U802ROMAGIC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	fprintf(stderr, "%s: not an xcoff file\n", av[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	exit(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)     }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)     aoutsz = get_16be(fhdr.f_opthdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)     if (read(fd, &aout, aoutsz) != aoutsz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	goto readerr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)     nsect = get_16be(fhdr.f_nscns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)     for (i = 0; i < nsect; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	if (read(fd, &shdr, sizeof(shdr)) != sizeof(shdr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	    goto readerr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	if (strcmp(shdr.s_name, ".text") == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	    put_16be(aout.o_snentry, i+1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	    put_16be(aout.o_sntext, i+1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	} else if (strcmp(shdr.s_name, ".data") == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	    put_16be(aout.o_sndata, i+1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	} else if (strcmp(shdr.s_name, ".bss") == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	    put_16be(aout.o_snbss, i+1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)     }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)     put_16be(aout.magic, AOUT_MAGIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)     if (lseek(fd, (long) sizeof(struct external_filehdr), 0) == -1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	|| write(fd, &aout, aoutsz) != aoutsz) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	fprintf(stderr, "%s: write error\n", av[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	exit(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)     }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)     close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)     exit(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) readerr:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)     fprintf(stderr, "%s: read error or file too short\n", av[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)     exit(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }