mirror of
https://github.com/netwide-assembler/nasm.git
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348 lines
11 KiB
C
348 lines
11 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 1996-2014 The NASM Authors - All Rights Reserved
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* See the file AUTHORS included with the NASM distribution for
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* the specific copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following
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* conditions are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ----------------------------------------------------------------------- */
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/*
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* rdfdump.c - dump RDOFF file header.
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*/
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#include "compiler.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define RDOFF_UTILS
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#include "rdoff.h"
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#define PROGRAM_VERSION "2.3"
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FILE *infile;
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static void print_header(int32_t length, int rdf_version)
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{
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char buf[129], t, l, s, flags;
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uint8_t reclen;
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int32_t o, ll;
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uint16_t rs;
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while (length > 0) {
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fread(&t, 1, 1, infile);
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if (rdf_version >= 2) {
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fread(&reclen, 1, 1, infile);
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}
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switch (t) {
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case RDFREC_GENERIC: /* generic record */
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printf(" generic record (length=%d)\n", (int)reclen);
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fseek(infile, reclen, SEEK_CUR);
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break;
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case RDFREC_RELOC: /* relocation record */
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case RDFREC_SEGRELOC: /* segment relocation */
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fread(&s, 1, 1, infile);
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fread(&o, 4, 1, infile);
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fread(&l, 1, 1, infile);
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fread(&rs, 2, 1, infile);
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printf(" %s: location (%04x:%08"PRIx32"), length %d, "
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"referred seg %04x\n",
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t == 1 ? "relocation" : "seg relocation", (int)s,
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translateint32_t(o), (int)l, translateint16_t(rs));
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if (rdf_version >= 2 && reclen != 8)
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printf(" warning: reclen != 8\n");
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if (rdf_version == 1)
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length -= 9;
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if (rdf_version == 1 && t == 6)
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printf
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(" warning: seg relocation not supported in RDOFF1\n");
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break;
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case RDFREC_IMPORT: /* import record */
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case RDFREC_FARIMPORT: /* import far symbol */
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fread(&flags, 1, 1, infile);
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fread(&rs, 2, 1, infile);
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ll = 0;
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if (rdf_version == 1) {
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do {
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fread(&buf[ll], 1, 1, infile);
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} while (buf[ll++]);
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} else {
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for (; ll < reclen - 3; ll++)
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fread(&buf[ll], 1, 1, infile);
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}
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if (t == 7)
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printf("far ");
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printf((flags & SYM_IMPORT) ? " import" : " extern");
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if (flags & SYM_FUNCTION)
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printf(" proc");
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if (flags & SYM_DATA)
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printf(" data");
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printf(": segment %04x = %s\n", translateint16_t(rs), buf);
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if (rdf_version == 1)
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length -= ll + 3;
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if (rdf_version == 1 && t == 7)
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printf
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(" warning: far import not supported in RDOFF1\n");
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break;
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case RDFREC_GLOBAL: /* export record */
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fread(&flags, 1, 1, infile);
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fread(&s, 1, 1, infile);
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fread(&o, 4, 1, infile);
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ll = 0;
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if (rdf_version == 1) {
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do {
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fread(&buf[ll], 1, 1, infile);
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} while (buf[ll++]);
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} else {
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for (; ll < reclen - 6; ll++)
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fread(&buf[ll], 1, 1, infile);
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}
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printf((flags & SYM_GLOBAL) ? " export" : " public");
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if (flags & SYM_FUNCTION)
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printf(" proc");
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if (flags & SYM_DATA)
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printf(" data");
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printf(": (%04x:%08"PRIx32") = %s\n", (int)s, translateint32_t(o), buf);
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if (rdf_version == 1)
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length -= ll + 6;
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break;
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case RDFREC_DLL: /* DLL and Module records */
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case RDFREC_MODNAME:
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ll = 0;
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if (rdf_version == 1) {
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do {
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fread(&buf[ll], 1, 1, infile);
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} while (buf[ll++]);
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} else {
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for (; ll < reclen; ll++)
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fread(&buf[ll], 1, 1, infile);
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}
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if (t == 4)
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printf(" dll: %s\n", buf);
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else
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printf(" module: %s\n", buf);
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if (rdf_version == 1)
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length -= ll + 1;
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break;
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case RDFREC_BSS: /* BSS reservation */
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fread(&ll, 4, 1, infile);
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printf(" bss reservation: %08"PRIx32" bytes\n", translateint32_t(ll));
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if (rdf_version == 1)
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length -= 5;
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if (rdf_version > 1 && reclen != 4)
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printf(" warning: reclen != 4\n");
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break;
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case RDFREC_COMMON:{
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uint16_t seg, align;
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uint32_t size;
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fread(&seg, 2, 1, infile);
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fread(&size, 4, 1, infile);
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fread(&align, 2, 1, infile);
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for (ll = 0; ll < reclen - 8; ll++)
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fread(buf + ll, 1, 1, infile);
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printf(" common: segment %04x = %s, %"PRId32":%d\n",
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translateint16_t(seg), buf, translateint32_t(size),
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translateint16_t(align));
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break;
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}
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default:
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printf(" unrecognized record (type %d", (int)t);
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if (rdf_version > 1) {
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printf(", length %d", (int)reclen);
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fseek(infile, reclen, SEEK_CUR);
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} else
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length--;
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printf(")\n");
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}
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if (rdf_version != 1)
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length -= 2 + reclen;
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}
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}
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int main(int argc, char **argv)
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{
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char id[7];
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int32_t l;
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uint16_t s;
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int verbose = 0;
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int32_t offset;
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int foundnullsegment = 0;
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int version;
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int32_t segmentcontentlength = 0;
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int nsegments = 0;
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int32_t headerlength = 0;
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int32_t objectlength = 0;
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printf("RDOFF dump utility, version %s\n", PROGRAM_VERSION);
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printf("RDOFF2 revision %s\n", RDOFF2_REVISION);
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puts("Copyright (c) 1996,99 Julian R Hall\n"
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"Improvements and fixes (c) 2002-2004 RET & COM Research.");
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if (argc < 2) {
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fputs("Usage: rdfdump [-v] <filename>\n", stderr);
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exit(1);
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}
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if (!strcmp(argv[1], "-v")) {
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verbose = 1;
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if (argc < 3) {
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fputs("required parameter missing\n", stderr);
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exit(1);
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}
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argv++;
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}
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infile = fopen(argv[1], "rb");
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if (!infile) {
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fprintf(stderr, "rdfdump: Could not open %s\n", argv[1]);
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exit(1);
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}
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fread(id, 6, 1, infile);
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if (strncmp(id, "RDOFF", 5)) {
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fputs("rdfdump: File does not contain valid RDOFF header\n",
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stderr);
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exit(1);
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}
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printf("File %s: RDOFF version %c\n\n", argv[1], id[5]);
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if (id[5] < '1' || id[5] > '2') {
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fprintf(stderr, "rdfdump: unknown RDOFF version '%c'\n", id[5]);
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exit(1);
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}
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version = id[5] - '0';
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if (version > 1) {
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fread(&l, 4, 1, infile);
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objectlength = translateint32_t(l);
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printf("Object content size: %"PRId32" bytes\n", objectlength);
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}
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fread(&l, 4, 1, infile);
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headerlength = translateint32_t(l);
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printf("Header (%"PRId32" bytes):\n", headerlength);
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print_header(headerlength, version);
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if (version == 1) {
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fread(&l, 4, 1, infile);
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l = translateint32_t(l);
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printf("\nText segment length = %"PRId32" bytes\n", l);
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offset = 0;
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while (l--) {
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fread(id, 1, 1, infile);
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if (verbose) {
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if (offset % 16 == 0)
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printf("\n%08"PRIx32" ", offset);
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printf(" %02x", (int)(uint8_t)id[0]);
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offset++;
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}
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}
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if (verbose)
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printf("\n\n");
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fread(&l, 4, 1, infile);
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l = translateint32_t(l);
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printf("Data segment length = %"PRId32" bytes\n", l);
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if (verbose) {
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offset = 0;
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while (l--) {
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fread(id, 1, 1, infile);
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if (offset % 16 == 0)
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printf("\n%08"PRIx32" ", offset);
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printf(" %02x", (int)(uint8_t)id[0]);
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offset++;
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}
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printf("\n");
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}
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} else {
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do {
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fread(&s, 2, 1, infile);
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s = translateint16_t(s);
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if (!s) {
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printf("\nNULL segment\n");
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foundnullsegment = 1;
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break;
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}
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printf("\nSegment:\n Type = %04X (%s)\n", (int)s,
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translatesegmenttype(s));
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nsegments++;
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fread(&s, 2, 1, infile);
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printf(" Number = %04X\n", (int)translateint16_t(s));
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fread(&s, 2, 1, infile);
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printf(" Resrvd = %04X\n", (int)translateint16_t(s));
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fread(&l, 4, 1, infile);
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l = translateint32_t(l);
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printf(" Length = %"PRId32" bytes\n", l);
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segmentcontentlength += l;
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offset = 0;
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while (l--) {
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fread(id, 1, 1, infile);
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if (verbose) {
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if (offset % 16 == 0)
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printf("\n%08"PRIx32" ", offset);
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printf(" %02x", (int)(uint8_t)id[0]);
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offset++;
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}
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}
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if (verbose)
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printf("\n");
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} while (!feof(infile));
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if (!foundnullsegment)
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printf("\nWarning: unexpected end of file - "
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"NULL segment not found\n");
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printf("\nTotal number of segments: %d\n", nsegments);
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printf("Total segment content length: %"PRId32" bytes\n",
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segmentcontentlength);
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/* calculate what the total object content length should have been */
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l = segmentcontentlength + 10 * (nsegments + 1) + headerlength + 4;
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if (l != objectlength)
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printf("Warning: actual object length (%"PRId32") != "
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"stored object length (%"PRId32")\n", l, objectlength);
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}
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fclose(infile);
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return 0;
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}
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