diff options
Diffstat (limited to 'tools/gen_reloc_table.c')
-rw-r--r-- | tools/gen_reloc_table.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/tools/gen_reloc_table.c b/tools/gen_reloc_table.c new file mode 100644 index 0000000..b2e2176 --- /dev/null +++ b/tools/gen_reloc_table.c @@ -0,0 +1,95 @@ +/****************************************************************************** + * Copyright (c) 2004, 2008 IBM Corporation + * All rights reserved. + * This program and the accompanying materials + * are made available under the terms of the BSD License + * which accompanies this distribution, and is available at + * http://www.opensource.org/licenses/bsd-license.php + * + * Contributors: + * IBM Corporation - initial implementation + *****************************************************************************/ + +#include <stdio.h> +#include <stdlib.h> + +static int reloc_64_cnt; + +static int reloc_64[4096]; + +static void +output_int(FILE *output_file, int i) +{ + fputc((i>>24) & 0xff, output_file); + fputc((i>>16) & 0xff, output_file); + fputc((i>>8) & 0xff, output_file); + fputc(i & 0xff, output_file); +} + +static void +output_reloc_table(FILE * output_file, int reloc_cnt, int reloc[]) +{ + int i; + for (i=0; i < reloc_cnt; i++) + { +#ifdef DEBUG + printf ("reloc %x\n", reloc[i]); +#endif + output_int (output_file, reloc[i]); + } + if ((reloc_cnt & 1) == 0) + output_int (output_file, 0); +} + +int +main(int argc, char *argv[]) +{ + int cnt_a, cnt_b, offset = -1; + unsigned char a, b; + FILE *orig, *other, *output_file; + + if (argc != 4) + { + fprintf (stderr, "reloc_diff orig_file other_file output_file\n"); + exit(-1); + } + + orig = fopen(argv[1], "rb"); + other = fopen(argv[2], "rb"); + output_file = fopen(argv[3], "wb"); + if(orig == NULL || other == NULL || output_file == NULL) { + printf("Could not open file.\n"); + return -1; + } + + while (1) + { + cnt_a = fread(&a, 1, 1, orig); + cnt_b = fread(&b, 1, 1, other); + offset ++; + if (cnt_a != cnt_b) + { + fprintf (stderr, "Files >%s< and >%s< have not the same lenght\n",argv[1],argv[2]); + exit(-1); + } + + if (cnt_a == 0) + break; + + if (a == b) continue; + + if (a + 0x40 == b) + { + reloc_64[reloc_64_cnt++] = offset; + } + else + { + fprintf(stderr, "Unknown relocation"); + fprintf(stderr, "Offset %x: %02x %02x\n", offset, a, b); + break; + } + } + + output_reloc_table(output_file, reloc_64_cnt, reloc_64); + return 0; +} |