lx_dump.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include "lx_loader.h"
// !!! FIXME: some cut-and-paste with lx_loader.c ...
static int sanityCheckExe(uint8 **_exe, uint32 *_exelen)
{
if (*_exelen < 196) {
fprintf(stderr, "not an OS/2 LX EXE\n");
return 0;
}
const uint32 header_offset = *((uint32 *) (*_exe + 0x3C));
16
//printf("header offset is %u\n", (uint) header_offset);
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
if ((header_offset + sizeof (LxHeader)) >= *_exelen) {
fprintf(stderr, "not an OS/2 LX EXE\n");
return 0;
}
*_exe += header_offset; // skip the DOS stub, etc.
*_exelen -= header_offset;
const LxHeader *lx = (const LxHeader *) *_exe;
if ((lx->magic_l != 'L') || (lx->magic_x != 'X')) {
fprintf(stderr, "not an OS/2 LX EXE\n");
return 0;
}
if ((lx->byte_order != 0) || (lx->word_order != 0)) {
fprintf(stderr, "Program is not little-endian!\n");
return 0;
}
if (lx->lx_version != 0) {
38
fprintf(stderr, "Program is unknown LX EXE version (%u)\n", (uint) lx->lx_version);
39
40
41
42
return 0;
}
if (lx->cpu_type > 3) { // 1==286, 2==386, 3==486
43
fprintf(stderr, "Program needs unknown CPU type (%u)\n", (uint) lx->cpu_type);
44
45
46
47
return 0;
}
if (lx->os_type != 1) { // 1==OS/2, others: dos4, windows, win386, unknown.
48
fprintf(stderr, "Program needs unknown OS type (%u)\n", (uint) lx->os_type);
49
50
51
52
return 0;
}
if (lx->page_size != 4096) {
53
fprintf(stderr, "Program page size isn't 4096 (%u)\n", (uint) lx->page_size);
54
55
56
57
58
59
60
61
62
63
64
return 0;
}
return 1;
} // sanityCheckExe
static void parseExe(const char *exefname, uint8 *exe, uint32 exelen)
{
printf("%s\n", exefname);
65
const uint8 *origexe = exe;
66
67
68
69
if (!sanityCheckExe(&exe, &exelen))
return;
const LxHeader *lx = (const LxHeader *) exe;
70
printf("module version: %u\n", (uint) lx->module_version);
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
printf("module flags:");
if (lx->module_flags & 0x4) printf(" LIBINIT");
if (lx->module_flags & 0x10) printf(" INTERNALFIXUPS");
if (lx->module_flags & 0x20) printf(" EXTERNALFIXUPS");
if (lx->module_flags & 0x100) printf(" PMINCOMPAT");
if (lx->module_flags & 0x200) printf(" PMCOMPAT");
if (lx->module_flags & 0x300) printf(" USESPM");
if (lx->module_flags & 0x2000) printf(" NOTLOADABLE");
if (lx->module_flags & 0x8000) printf(" LIBRARYMODULE");
if (lx->module_flags & 0x18000) printf(" PROTMEMLIBRARYMODULE");
if (lx->module_flags & 0x20000) printf(" PHYSDRIVERMODULE");
if (lx->module_flags & 0x28000) printf(" VIRTDRIVERMODULE");
if (lx->module_flags & 0x40000000) printf(" LIBTERM");
printf("\n");
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
printf("Number of pages in module: %u\n", (uint) lx->module_num_pages);
printf("EIP Object number: %u\n", (uint) lx->eip_object);
printf("EIP: 0x%X\n", (uint) lx->eip);
printf("ESP Object number: %u\n", (uint) lx->esp_object);
printf("ESP: 0x%X\n", (uint) lx->esp);
printf("Page size: %u\n", (uint) lx->page_size);
printf("Page offset shift: %u\n", (uint) lx->page_offset_shift);
printf("Fixup section size: %u\n", (uint) lx->fixup_section_size);
printf("Fixup section checksum: 0x%X\n", (uint) lx->fixup_section_checksum);
printf("Loader section size: %u\n", (uint) lx->loader_section_size);
printf("Loader section checksum: 0x%X\n", (uint) lx->loader_section_checksum);
printf("Object table offset: %u\n", (uint) lx->object_table_offset);
printf("Number of objects in module: %u\n", (uint) lx->module_num_objects);
printf("Object page table offset: %u\n", (uint) lx->object_page_table_offset);
printf("Object iterated pages offset: %u\n", (uint) lx->object_iter_pages_offset);
printf("Resource table offset: %u\n", (uint) lx->resource_table_offset);
printf("Number of resource table entries: %u\n", (uint) lx->num_resource_table_entries);
printf("Resident name table offset: %u\n", (uint) lx->resident_name_table_offset);
printf("Entry table offset: %u\n", (uint) lx->entry_table_offset);
printf("Module directives offset: %u\n", (uint) lx->module_directives_offset);
printf("Number of module directives: %u\n", (uint) lx->num_module_directives);
printf("Fixup page table offset: %u\n", (uint) lx->fixup_page_table_offset);
printf("Fixup record table offset: %u\n", (uint) lx->fixup_record_table_offset);
printf("Import module table offset: %u\n", (uint) lx->import_module_table_offset);
printf("Number of inport module entries: %u\n", (uint) lx->num_import_mod_entries);
printf("Import procedure name table offset: %u\n", (uint) lx->import_proc_table_offset);
printf("Per-page checksum offset: %u\n", (uint) lx->per_page_checksum_offset);
printf("Data pages offset: %u\n", (uint) lx->data_pages_offset);
printf("Number of preload pages: %u\n", (uint) lx->num_preload_pages);
printf("Non-resident name table offset: %u\n", (uint) lx->non_resident_name_table_offset);
printf("Non-resident name table length: %u\n", (uint) lx->non_resident_name_table_len);
printf("Non-resident name table checksum: 0x%X\n", (uint) lx->non_resident_name_table_checksum);
printf("Auto data segment object number: %u\n", (uint) lx->auto_ds_object_num);
printf("Debug info offset: %u\n", (uint) lx->debug_info_offset);
printf("Debug info length: %u\n", (uint) lx->debug_info_len);
printf("Number of instance pages in preload section: %u\n", (uint) lx->num_instance_preload);
printf("Number of instance pages in demand section: %u\n", (uint) lx->num_instance_demand);
printf("Heap size: %u\n", (uint) lx->heapsize);
125
126
127
128
129
130
131
132
/* This is apparently a requirement as of OS/2 2.0, according to lxexe.txt. */
if ((lx->object_iter_pages_offset != 0) && (lx->object_iter_pages_offset != lx->data_pages_offset)) {
fprintf(stderr, "Object iterator pages offset must be 0 or equal to Data pages offset\n");
}
// when an LX file says "object" it's probably more like "section" or "segment" ...?
printf("\n");
133
printf("Object table (%u entries):\n", (uint) lx->module_num_objects);
134
135
for (uint32 i = 0; i < lx->module_num_objects; i++) {
const LxObjectTableEntry *obj = ((const LxObjectTableEntry *) (exe + lx->object_table_offset)) + i;
136
137
138
printf("Object #%u:\n", (uint) i+1);
printf("Virtual size: %u\n", (uint) obj->virtual_size);
printf("Relocation base address: 0x%X\n", (uint) obj->reloc_base_addr);
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
printf("Object flags:");
if (obj->object_flags & 0x1) printf(" READ");
if (obj->object_flags & 0x2) printf(" WRITE");
if (obj->object_flags & 0x4) printf(" EXEC");
if (obj->object_flags & 0x8) printf(" RESOURCE");
if (obj->object_flags & 0x10) printf(" DISCARD");
if (obj->object_flags & 0x20) printf(" SHARED");
if (obj->object_flags & 0x40) printf(" PRELOAD");
if (obj->object_flags & 0x80) printf(" INVALID");
if (obj->object_flags & 0x100) printf(" ZEROFILL");
if (obj->object_flags & 0x200) printf(" RESIDENT");
if (obj->object_flags & 0x300) printf(" RESIDENT+CONTIG");
if (obj->object_flags & 0x400) printf(" RESIDENT+LONGLOCK");
if (obj->object_flags & 0x800) printf(" SYSRESERVED");
if (obj->object_flags & 0x1000) printf(" 16:16");
if (obj->object_flags & 0x2000) printf(" BIG");
if (obj->object_flags & 0x4000) printf(" CONFORM");
if (obj->object_flags & 0x8000) printf(" IOPL");
printf("\n");
158
159
160
printf("Page table index: %u\n", (uint) obj->page_table_index);
printf("Number of page table entries: %u\n", (uint) obj->num_page_table_entries);
printf("System-reserved field: %u\n", (uint) obj->reserved);
161
162
163
164
printf("Object pages:\n");
const LxObjectPageTableEntry *objpage = ((const LxObjectPageTableEntry *) (exe + lx->object_page_table_offset)) + (obj->page_table_index - 1);
const uint32 *fixuppage = (((const uint32 *) (exe + lx->fixup_page_table_offset)) + (obj->page_table_index - 1));
165
for (uint32 i = 0; i < obj->num_page_table_entries; i++, objpage++, fixuppage++) {
166
167
168
169
printf("Object Page #%u:\n", (uint) (i + obj->page_table_index));
printf("Page data offset: 0x%X\n", (uint) objpage->page_data_offset);
printf("Page data size: %u\n", (uint) objpage->data_size);
printf("Page flags: (%u)", (uint) objpage->flags);
170
171
172
173
174
175
176
177
178
179
if (objpage->flags == 0x0) printf(" PHYSICAL");
else if (objpage->flags == 0x1) printf(" ITERATED");
else if (objpage->flags == 0x2) printf(" INVALID");
else if (objpage->flags == 0x3) printf(" ZEROFILL");
else if (objpage->flags == 0x4) printf(" RANGE");
else if (objpage->flags == 0x5) printf(" COMPRESSED");
else printf(" UNKNOWN");
printf("\n");
const uint32 fixupoffset = *fixuppage;
const uint32 fixuplen = fixuppage[1] - fixuppage[0];
180
181
printf("Page's fixup record offset: %u\n", (uint) fixupoffset);
printf("Page's fixup record size: %u\n", (uint) fixuplen);
182
183
184
185
printf("Fixup records:\n");
const uint8 *fixup = (exe + lx->fixup_record_table_offset) + fixupoffset;
const uint8 *fixupend = fixup + fixuplen;
for (uint32 i = 0; fixup < fixupend; i++) {
186
printf("Fixup Record #%u:\n", (uint) (i + 1));
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
printf("Source type: ");
const uint8 srctype = *(fixup++);
if (srctype & 0x10) printf("[FIXUPTOALIAS] ");
if (srctype & 0x20) printf("[SOURCELIST] ");
switch (srctype & 0xF) {
case 0x00: printf("Byte fixup"); break;
case 0x02: printf("16-bit selector fixup"); break;
case 0x03: printf("16:16 pointer fixup"); break;
case 0x05: printf("16-bit offset fixup"); break;
case 0x06: printf("16:32 pointer fixup"); break;
case 0x07: printf("32-bit offset fixup"); break;
case 0x08: printf("32-bit self-relative offset fixup"); break;
default: printf("(undefined fixup)"); break;
} // switch
printf("\n");
const uint8 fixupflags = *(fixup++);
printf("Target flags:");
switch (fixupflags & 0x3) {
case 0x0: printf(" INTERNAL"); break;
case 0x1: printf(" IMPORTBYORDINAL"); break;
case 0x2: printf(" IMPORTBYNAME"); break;
case 0x3: printf(" INTERNALVIAENTRY"); break;
} // switch
if (fixupflags & 0x4) printf(" ADDITIVE");
if (fixupflags & 0x8) printf(" INTERNALCHAINING");
if (fixupflags & 0x10) printf(" 32BITTARGETOFFSET");
if (fixupflags & 0x20) printf(" 32BITADDITIVE");
if (fixupflags & 0x40) printf(" 16BITORDINAL");
if (fixupflags & 0x80) printf(" 8BITORDINAL");
printf("\n");
uint8 srclist_count = 0;
if (srctype & 0x20) { // source list
srclist_count = *(fixup++);
223
printf("Source offset list count: %u\n", (uint) srclist_count);
224
} else {
225
226
const sint16 srcoffset = *((sint16 *) fixup); fixup += 2;
printf("Source offset: %d\n", (int) srcoffset);
227
228
229
230
231
232
233
234
} // else
printf("\n");
switch (fixupflags & 0x3) {
case 0x0:
printf("Internal fixup record:\n");
if (fixupflags & 0x40) { // 16 bit value
const uint16 val = *((uint16 *) fixup); fixup += 2;
235
printf("Object: %u\n", (uint) val);
236
237
} else {
const uint8 val = *(fixup++);
238
printf("Object: %u\n", (uint) val);
239
240
241
242
243
244
245
} // else
printf("Target offset: ");
if ((srctype & 0xF) == 0x2) { // 16-bit selector fixup
printf("[not used for 16-bit selector fixups]\n");
} else if (fixupflags & 0x10) { // 32-bit target offset
const uint32 val = *((uint32 *) fixup); fixup += 4;
246
printf("%u\n", (uint) val);
247
248
} else { // 16-bit target offset
const uint16 val = *((uint16 *) fixup); fixup += 2;
249
printf("%u\n", (uint) val);
250
251
252
253
254
255
256
} // else
break;
case 0x1:
printf("Import by ordinal fixup record:\n");
if (fixupflags & 0x40) { // 16 bit value
const uint16 val = *((uint16 *) fixup); fixup += 2;
257
printf("Module ordinal: %u\n", (uint) val);
258
259
} else {
const uint8 val = *(fixup++);
260
printf("Module ordinal: %u\n", (uint) val);
261
262
263
264
} // else
if (fixupflags & 0x80) { // 8 bit value
const uint8 val = *(fixup++);
265
printf("Import ordinal: %u\n", (uint) val);
266
267
} else if (fixupflags & 0x10) { // 32-bit value
const uint32 val = *((uint32 *) fixup); fixup += 4;
268
printf("Import ordinal: %u\n", (uint) val);
269
270
} else { // 16-bit value
const uint16 val = *((uint16 *) fixup); fixup += 2;
271
printf("Import ordinal: %u\n", (uint) val);
272
273
274
275
276
277
278
279
280
281
282
283
} // else
uint32 additive = 0;
if (fixupflags & 0x4) { // Has additive.
if (fixupflags & 0x20) { // 32-bit value
additive = *((uint32 *) fixup);
fixup += 4;
} else { // 16-bit value
additive = *((uint16 *) fixup);
fixup += 2;
} // else
} // if
284
printf("Additive: %u\n", (uint) additive);
285
286
break;
287
case 0x2: {
288
printf("Import by name fixup record:\n");
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
if (fixupflags & 0x40) { // 16 bit value
const uint16 val = *((uint16 *) fixup); fixup += 2;
printf("Module ordinal: %u\n", (uint) val);
} else {
const uint8 val = *(fixup++);
printf("Module ordinal: %u\n", (uint) val);
} // else
uint32 name_offset = 0;
if (fixupflags & 0x10) { // 32-bit value
name_offset = *((uint32 *) fixup); fixup += 4;
} else { // 16-bit value
name_offset = *((uint16 *) fixup); fixup += 2;
} // else
const uint8 *import_name = (exe + lx->import_proc_table_offset) + name_offset;
char name[128];
const uint8 namelen = *(import_name++) & 0x7F;
memcpy(name, import_name, namelen);
name[namelen] = '\0';
printf("Name offset: %u ('%s')\n", (uint) name_offset, name);
uint32 additive = 0;
if (fixupflags & 0x4) { // Has additive.
if (fixupflags & 0x20) { // 32-bit value
additive = *((uint32 *) fixup);
fixup += 4;
} else { // 16-bit value
additive = *((uint16 *) fixup);
fixup += 2;
} // else
} // if
printf("Additive: %u\n", (uint) additive);
323
break;
324
} // case
325
326
327
328
329
330
331
332
333
334
case 0x3:
printf("Internal entry table fixup record:\n");
printf("WRITE ME\n"); exit(1);
break;
} // switch
if (srctype & 0x20) { // source list
printf("Source offset list:");
for (uint8 i = 0; i < srclist_count; i++) {
335
336
const sint16 val = *((sint16 *) fixup); fixup += 2;
printf(" %d", (int) val);
337
338
339
340
341
342
343
344
345
346
347
} // for
} // if
printf("\n\n");
} // while
printf("\n");
} // for
} // for
printf("\n");
348
printf("Resource table (%u entries):\n", (uint) lx->num_resource_table_entries);
349
350
for (uint32 i = 0; i < lx->num_resource_table_entries; i++) {
const LxResourceTableEntry *rsrc = ((const LxResourceTableEntry *) (exe + lx->resource_table_offset)) + i;
351
352
353
354
355
356
printf("%u:\n", (uint) i);
printf("Type ID: %u\n", (uint) rsrc->type_id);
printf("Name ID: %u\n", (uint) rsrc->name_id);
printf("Resource size: %u\n", (uint) rsrc->resource_size);
printf("Object: %u\n", (uint) rsrc->object);
printf("Offset: 0x%X\n", (uint) rsrc->offset);
357
358
359
360
361
362
363
printf("\n");
} // for
printf("\n");
printf("Entry table:\n");
int bundleid = 1;
364
int ordinal = 1;
365
366
367
368
369
370
const uint8 *entryptr = exe + lx->entry_table_offset;
while (*entryptr) { /* end field has a value of zero. */
const uint8 numentries = *(entryptr++); /* number of entries in this bundle */
const uint8 bundletype = (*entryptr) & ~0x80;
const uint8 paramtypes = (*(entryptr++) & 0x80) ? 1 : 0;
371
printf("Bundle %d (%u entries): ", bundleid, (uint) numentries);
372
373
374
375
376
377
378
379
bundleid++;
if (paramtypes)
printf("[PARAMTYPES] ");
switch (bundletype) {
case 0x00:
printf("UNUSED\n");
380
printf(" %u unused entries.\n\n", (uint) numentries);
381
ordinal += numentries;
382
383
384
385
break;
case 0x01:
printf("16BIT\n");
386
printf(" Object number: %u\n", (uint) *((const uint16 *) entryptr)); entryptr += 2;
387
for (uint8 i = 0; i < numentries; i++) {
388
printf(" %d:\n", ordinal++);
389
390
391
printf(" Flags:");
if (*entryptr & 0x1) printf(" EXPORTED");
printf("\n");
392
393
printf(" Parameter word count: %u\n", (uint) ((*entryptr & 0xF8) >> 3)); entryptr++;
printf(" Offset: %u\n", (uint) *((const uint16 *) entryptr)); entryptr += 2;
394
395
396
397
398
399
printf("\n");
}
break;
case 0x02:
printf("286CALLGATE\n");
400
printf(" Object number: %u\n", (uint) *((const uint16 *) entryptr)); entryptr += 2;
401
for (uint8 i = 0; i < numentries; i++) {
402
printf(" %d:\n", ordinal++);
403
404
405
printf(" Flags:");
if (*entryptr & 0x1) printf(" EXPORTED");
printf("\n");
406
407
408
printf(" Parameter word count: %u\n", (uint) ((*entryptr & 0xF8) >> 3)); entryptr++;
printf(" Offset: %u\n", (uint) *((const uint16 *) entryptr)); entryptr += 2;
printf(" Callgate selector: %u\n", (uint) *((const uint16 *) entryptr)); entryptr += 2;
409
410
411
412
413
printf("\n");
}
break;
case 0x03: printf("32BIT\n");
414
printf(" Object number: %u\n", (uint) *((const uint16 *) entryptr)); entryptr += 2;
415
for (uint8 i = 0; i < numentries; i++) {
416
printf(" %d:\n", ordinal++);
417
418
419
printf(" Flags:");
if (*entryptr & 0x1) printf(" EXPORTED");
printf("\n");
420
421
printf(" Parameter word count: %u\n", (uint) ((*entryptr & 0xF8) >> 3)); entryptr++;
printf(" Offset: %u\n", (uint) *((const uint32 *) entryptr)); entryptr += 4;
422
423
424
425
426
printf("\n");
}
break;
case 0x04: printf("FORWARDER\n"); break;
427
printf(" Reserved field: %u\n", (uint) *((const uint16 *) entryptr)); entryptr += 2;
428
for (uint8 i = 0; i < numentries; i++) {
429
printf(" %d:\n", ordinal++);
430
431
432
433
printf(" Flags:");
const int isordinal = (*entryptr & 0x1);
if (isordinal) printf(" IMPORTBYORDINAL");
printf("\n");
434
435
printf(" Reserved for future use: %u\n", (uint) ((*entryptr & 0xF8) >> 3)); entryptr++;
printf(" Module ordinal number: %u\n", (uint) *((const uint16 *) entryptr)); entryptr += 2;
436
if (isordinal) {
437
printf(" Import ordinal number: %u\n", (uint) *((const uint32 *) entryptr)); entryptr += 4;
438
} else {
439
printf(" Import name offset: %u\n", (uint) *((const uint32 *) entryptr)); entryptr += 4;
440
441
442
443
444
445
}
printf("\n");
}
break;
default:
446
printf("UNKNOWN (%u)\n\n", (uint) bundletype);
447
448
449
450
451
break; // !!! FIXME: what to do?
} // switch
} // while
printf("\n");
452
printf("Module directives (%u entries):\n", (uint) lx->num_module_directives);
453
454
const uint8 *dirptr = exe + lx->module_directives_offset;
for (uint32 i = 0; i < lx->num_module_directives; i++) {
455
456
457
458
printf("%u:\n", (uint) i+1);
printf("Directive ID: %u\n", (uint) *((const uint16 *) dirptr)); dirptr += 2;
printf("Data size: %u\n", (uint) *((const uint16 *) dirptr)); dirptr += 2;
printf("Data offset: %u\n", (uint) *((const uint32 *) dirptr)); dirptr += 4;
459
460
461
462
463
464
465
466
467
468
469
470
471
printf("\n");
// !!! FIXME: verify record directive table, etc, based on Directive ID
}
printf("\n");
if (lx->per_page_checksum_offset == 0) {
printf("No per-page checksums available.\n");
} else {
printf("!!! FIXME: look at per-page checksums!\n");
}
printf("\n");
472
printf("Import modules (%u entries):\n", (uint) lx->num_import_mod_entries);
473
474
475
476
477
478
479
480
const uint8 *import_modules_table = exe + lx->import_module_table_offset;
for (uint32 i = 0; i < lx->num_import_mod_entries; i++) {
char name[128];
const uint8 namelen = *(import_modules_table++);
// !!! FIXME: name can't be more than 127 chars, according to docs. Check this.
memcpy(name, import_modules_table, namelen);
import_modules_table += namelen;
name[namelen] = '\0';
481
printf("%u: %s\n", (uint) i+1, name);
484
485
486
487
488
489
490
491
492
493
494
const uint8 *name_table;
printf("Resident name table:\n");
name_table = exe + lx->resident_name_table_offset;
for (uint32 i = 0; *name_table; i++) {
const uint8 namelen = *(name_table++);
char name[256];
memcpy(name, name_table, namelen);
name[namelen] = '\0';
name_table += namelen;
const uint16 ordinal = *((const uint16 *) name_table); name_table += 2;
495
printf("%u: '%s' (ordinal %u)\n", (uint) i, name, (uint) ordinal);
496
497
498
499
500
501
502
503
504
505
506
507
} // for
printf("Non-resident name table:\n");
name_table = origexe + lx->non_resident_name_table_offset;
const uint8 *end_of_name_table = name_table + lx->non_resident_name_table_len;
for (uint32 i = 0; (name_table < end_of_name_table) && *name_table; i++) {
const uint8 namelen = *(name_table++);
char name[256];
memcpy(name, name_table, namelen);
name[namelen] = '\0';
name_table += namelen;
const uint16 ordinal = *((const uint16 *) name_table); name_table += 2;
508
printf("%u: '%s' (ordinal %u)\n", (uint) i, name, (uint) ordinal);
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
} // parseExe
int main(int argc, char **argv)
{
if (argc != 2) {
fprintf(stderr, "USAGE: %s <program.exe>\n", argv[0]);
return 1;
}
const char *exefname = argv[1];
FILE *io = fopen(exefname, "rb");
if (!io) {
fprintf(stderr, "can't open '%s: %s'\n", exefname, strerror(errno));
return 2;
}
if (fseek(io, 0, SEEK_END) < 0) {
fprintf(stderr, "can't seek in '%s': %s\n", exefname, strerror(errno));
return 3;
}
const uint32 exelen = ftell(io);
uint8 *exe = (uint8 *) malloc(exelen);
if (!exe) {
fprintf(stderr, "Out of memory\n");
return 4;
}
rewind(io);
if (fread(exe, exelen, 1, io) != 1) {
fprintf(stderr, "read failure on '%s': %s\n", exefname, strerror(errno));
return 5;
}
fclose(io);
parseExe(exefname, exe, exelen);
free(exe);
return 0;
} // main
// end of lx_dump.c ...