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Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| /* | ||
| * hack-coff.c - hack the header of an xcoff file to fill in | ||
| * a few fields needed by the Open Firmware xcoff loader on | ||
| * Power Macs but not initialized by objcopy. | ||
| * | ||
| * Copyright (C) Paul Mackerras 1997. | ||
| * | ||
| * This program is free software; you can redistribute it and/or | ||
| * modify it under the terms of the GNU General Public License | ||
| * as published by the Free Software Foundation; either version | ||
| * 2 of the License, or (at your option) any later version. | ||
| */ | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <unistd.h> | ||
| #include <fcntl.h> | ||
| #include <string.h> | ||
| #include "rs6000.h" | ||
|
|
||
| #define AOUT_MAGIC 0x010b | ||
|
|
||
| #define get_16be(x) ((((unsigned char *)(x))[0] << 8) \ | ||
| + ((unsigned char *)(x))[1]) | ||
| #define put_16be(x, v) (((unsigned char *)(x))[0] = (v) >> 8, \ | ||
| ((unsigned char *)(x))[1] = (v) & 0xff) | ||
| #define get_32be(x) ((((unsigned char *)(x))[0] << 24) \ | ||
| + (((unsigned char *)(x))[1] << 16) \ | ||
| + (((unsigned char *)(x))[2] << 8) \ | ||
| + ((unsigned char *)(x))[3]) | ||
|
|
||
| int | ||
| main(int ac, char **av) | ||
| { | ||
| int fd; | ||
| int i, nsect; | ||
| int aoutsz; | ||
| struct external_filehdr fhdr; | ||
| AOUTHDR aout; | ||
| struct external_scnhdr shdr; | ||
|
|
||
| if (ac != 2) { | ||
| fprintf(stderr, "Usage: hack-coff coff-file\n"); | ||
| exit(1); | ||
| } | ||
| if ((fd = open(av[1], 2)) == -1) { | ||
| perror(av[2]); | ||
| exit(1); | ||
| } | ||
| if (read(fd, &fhdr, sizeof(fhdr)) != sizeof(fhdr)) | ||
| goto readerr; | ||
| i = get_16be(fhdr.f_magic); | ||
| if (i != U802TOCMAGIC && i != U802WRMAGIC && i != U802ROMAGIC) { | ||
| fprintf(stderr, "%s: not an xcoff file\n", av[1]); | ||
| exit(1); | ||
| } | ||
| aoutsz = get_16be(fhdr.f_opthdr); | ||
| if (read(fd, &aout, aoutsz) != aoutsz) | ||
| goto readerr; | ||
| nsect = get_16be(fhdr.f_nscns); | ||
| for (i = 0; i < nsect; ++i) { | ||
| if (read(fd, &shdr, sizeof(shdr)) != sizeof(shdr)) | ||
| goto readerr; | ||
| if (strcmp(shdr.s_name, ".text") == 0) { | ||
| put_16be(aout.o_snentry, i+1); | ||
| put_16be(aout.o_sntext, i+1); | ||
| } else if (strcmp(shdr.s_name, ".data") == 0) { | ||
| put_16be(aout.o_sndata, i+1); | ||
| } else if (strcmp(shdr.s_name, ".bss") == 0) { | ||
| put_16be(aout.o_snbss, i+1); | ||
| } | ||
| } | ||
| put_16be(aout.magic, AOUT_MAGIC); | ||
| if (lseek(fd, (long) sizeof(struct external_filehdr), 0) == -1 | ||
| || write(fd, &aout, aoutsz) != aoutsz) { | ||
| fprintf(stderr, "%s: write error\n", av[1]); | ||
| exit(1); | ||
| } | ||
| close(fd); | ||
| exit(0); | ||
|
|
||
| readerr: | ||
| fprintf(stderr, "%s: read error or file too short\n", av[1]); | ||
| exit(1); | ||
| } |
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