96 lines
2.1 KiB
C
96 lines
2.1 KiB
C
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/******************************************************************************
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* Copyright (c) 2004, 2008 IBM Corporation
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* All rights reserved.
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* This program and the accompanying materials
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* are made available under the terms of the BSD License
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* which accompanies this distribution, and is available at
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* http://www.opensource.org/licenses/bsd-license.php
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*
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* Contributors:
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* IBM Corporation - initial implementation
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*****************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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static int reloc_64_cnt;
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static int reloc_64[4096];
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static void
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output_int(FILE *output_file, int i)
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{
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fputc((i>>24) & 0xff, output_file);
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fputc((i>>16) & 0xff, output_file);
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fputc((i>>8) & 0xff, output_file);
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fputc(i & 0xff, output_file);
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}
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static void
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output_reloc_table(FILE * output_file, int reloc_cnt, int reloc[])
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{
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int i;
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for (i=0; i < reloc_cnt; i++)
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{
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#ifdef DEBUG
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printf ("reloc %x\n", reloc[i]);
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#endif
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output_int (output_file, reloc[i]);
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}
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if ((reloc_cnt & 1) == 0)
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output_int (output_file, 0);
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}
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int
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main(int argc, char *argv[])
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{
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int cnt_a, cnt_b, offset = -1;
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unsigned char a, b;
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FILE *orig, *other, *output_file;
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if (argc != 4)
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{
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fprintf (stderr, "reloc_diff orig_file other_file output_file\n");
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exit(-1);
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}
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orig = fopen(argv[1], "rb");
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other = fopen(argv[2], "rb");
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output_file = fopen(argv[3], "wb");
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if(orig == NULL || other == NULL || output_file == NULL) {
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printf("Could not open file.\n");
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return -1;
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}
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while (1)
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{
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cnt_a = fread(&a, 1, 1, orig);
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cnt_b = fread(&b, 1, 1, other);
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offset ++;
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if (cnt_a != cnt_b)
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{
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fprintf (stderr, "Files >%s< and >%s< have not the same length\n",argv[1],argv[2]);
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exit(-1);
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}
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if (cnt_a == 0)
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break;
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if (a == b) continue;
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if (a + 0x40 == b)
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{
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reloc_64[reloc_64_cnt++] = offset;
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}
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else
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{
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fprintf(stderr, "Unknown relocation");
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fprintf(stderr, "Offset %x: %02x %02x\n", offset, a, b);
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break;
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}
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}
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output_reloc_table(output_file, reloc_64_cnt, reloc_64);
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return 0;
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}
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