100
|
1 /* unexec for GNU Emacs on Windows NT.
|
|
2 Copyright (C) 1994 Free Software Foundation, Inc.
|
|
3
|
|
4 This file is part of XEmacs.
|
|
5
|
|
6 XEmacs is free software; you can redistribute it and/or modify it
|
|
7 under the terms of the GNU General Public License as published by the
|
|
8 Free Software Foundation; either version 2, or (at your option) any
|
|
9 later version.
|
|
10
|
|
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
|
|
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
14 for more details.
|
|
15
|
|
16 You should have received a copy of the GNU General Public License
|
|
17 along with XEmacs; see the file COPYING. If not, write to the Free
|
|
18 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
|
|
19 02111-1307, USA.
|
|
20
|
|
21 Geoff Voelker (voelker@cs.washington.edu) 8-12-94 */
|
|
22
|
|
23 /* Adapted for XEmacs by David Hobley <david@spook-le0.cia.com.au> */
|
|
24
|
298
|
25 /* The linkers that come with MSVC >= 4.0 merge .bss into .data and reorder
|
|
26 * uninitialised data so that the .data section looks like:
|
|
27 *
|
|
28 * crt0 initialised data
|
|
29 * emacs initialised data
|
|
30 * <my_edata>
|
|
31 * library initialised data
|
|
32 * <start of bss part of .data>
|
|
33 * emacs static uninitialised data
|
|
34 * library static uninitialised data
|
|
35 * emacs global uninitialised data
|
|
36 * <my_ebss>
|
|
37 * library global uninitialised data
|
|
38 *
|
|
39 * This means that we can't use the normal my_ebss in lastfile.c trick to
|
|
40 * differentiate between unitialised data that belongs to emacs and
|
|
41 * uninitialised data that belongs to system libraries. This is bad because
|
|
42 * we do want to initialise the emacs data, but we don't want to initialise
|
|
43 * the system library data.
|
|
44 *
|
|
45 * To solve this problem using MSVC >= 5.0 we use a pragma directive to tell
|
|
46 * the compiler to put emacs's data (both initialised and uninitialised) in
|
|
47 * a separate section in the executable, and we only dump that section. This
|
|
48 * means that all files that define initialized data must include config.h
|
|
49 * to pick up the pragma. We don't try to make any part of that section
|
|
50 * read-only.
|
|
51 *
|
|
52 * This pragma directive isn't supported by the MSVC 4.x compiler. Instead,
|
|
53 * we dump crt0 initialised data and library static uninitialised data in
|
|
54 * addition to the emacs data. This is wrong, but we appear to be able to
|
|
55 * get away with it. A proper fix might involve the introduction of a static
|
|
56 * version of my_ebss in lastfile.c and a new firstfile.c file. jhar */
|
|
57
|
|
58 #include <config.h>
|
100
|
59 #include <stdlib.h> /* _fmode */
|
|
60 #include <stdio.h>
|
|
61 #include <fcntl.h>
|
|
62 #include <windows.h>
|
|
63
|
298
|
64 /* From IMAGEHLP.H which is not installed by default by MSVC < 5 */
|
|
65 /* The IMAGEHLP.DLL library is not distributed by default with Windows95 */
|
400
|
66 typedef PIMAGE_NT_HEADERS
|
|
67 (__stdcall * pfnCheckSumMappedFile_t) (LPVOID BaseAddress, DWORD FileLength,
|
|
68 LPDWORD HeaderSum, LPDWORD CheckSum);
|
|
69
|
298
|
70
|
100
|
71 #if 0
|
|
72 extern BOOL ctrl_c_handler (unsigned long type);
|
|
73 #endif
|
|
74
|
|
75 #include "ntheap.h"
|
|
76
|
209
|
77 /* Sync with FSF Emacs 19.34.6 note: struct file_data is now defined in ntheap.h */
|
100
|
78
|
169
|
79 enum {
|
|
80 HEAP_UNINITIALIZED = 1,
|
|
81 HEAP_UNLOADED,
|
|
82 HEAP_LOADED
|
|
83 };
|
|
84
|
100
|
85 /* Basically, our "initialized" flag. */
|
169
|
86 int heap_state = HEAP_UNINITIALIZED;
|
100
|
87
|
|
88 /* So we can find our heap in the file to recreate it. */
|
169
|
89 unsigned long heap_index_in_executable = UNINIT_LONG;
|
100
|
90
|
|
91 void get_section_info (file_data *p_file);
|
|
92 void copy_executable_and_dump_data_section (file_data *, file_data *);
|
|
93 void dump_bss_and_heap (file_data *p_infile, file_data *p_outfile);
|
|
94
|
|
95 /* Cached info about the .data section in the executable. */
|
169
|
96 PUCHAR data_start_va = UNINIT_PTR;
|
|
97 DWORD data_start_file = UNINIT_LONG;
|
|
98 DWORD data_size = UNINIT_LONG;
|
100
|
99
|
|
100 /* Cached info about the .bss section in the executable. */
|
304
|
101 PUCHAR bss_start = UNINIT_PTR;
|
|
102 DWORD bss_size = UNINIT_LONG;
|
100
|
103
|
|
104 #ifdef HAVE_NTGUI
|
|
105 HINSTANCE hinst = NULL;
|
|
106 HINSTANCE hprevinst = NULL;
|
|
107 LPSTR lpCmdLine = "";
|
|
108 int nCmdShow = 0;
|
|
109 #endif /* HAVE_NTGUI */
|
|
110
|
|
111 /* Startup code for running on NT. When we are running as the dumped
|
|
112 version, we need to bootstrap our heap and .bss section into our
|
|
113 address space before we can actually hand off control to the startup
|
|
114 code supplied by NT (primarily because that code relies upon malloc ()). */
|
398
|
115
|
|
116 /* **********************
|
|
117 Hackers please remember, this _start() thingy is *not* called neither
|
|
118 when dumping portably, nor when running from temacs! Do not put
|
|
119 significant XEmacs initialization here!
|
|
120 ********************** */
|
|
121
|
100
|
122 void
|
|
123 _start (void)
|
|
124 {
|
|
125 extern void mainCRTStartup (void);
|
|
126
|
|
127 /* Cache system info, e.g., the NT page size. */
|
|
128 cache_system_info ();
|
|
129
|
|
130 /* If we're a dumped version of emacs then we need to recreate
|
|
131 our heap and play tricks with our .bss section. Do this before
|
|
132 start up. (WARNING: Do not put any code before this section
|
|
133 that relies upon malloc () and runs in the dumped version. It
|
|
134 won't work.) */
|
169
|
135 if (heap_state == HEAP_UNLOADED)
|
100
|
136 {
|
|
137 char executable_path[MAX_PATH];
|
|
138
|
|
139 if (GetModuleFileName (NULL, executable_path, MAX_PATH) == 0)
|
|
140 {
|
|
141 exit (1);
|
|
142 }
|
298
|
143
|
398
|
144 /* #### This is super-bogus. When I rename xemacs.exe,
|
|
145 the renamed file still loads its heap from xemacs.exe --kkm */
|
|
146 #if 0
|
|
147 {
|
|
148 /* To allow profiling, make sure executable_path names the .exe
|
|
149 file, not the file created by the profiler */
|
|
150 char *p = strrchr (executable_path, '\\');
|
|
151 strcpy (p+1, PATH_PROGNAME ".exe");
|
|
152 }
|
|
153 #endif
|
298
|
154
|
100
|
155 recreate_heap (executable_path);
|
169
|
156 heap_state = HEAP_LOADED;
|
100
|
157 }
|
|
158
|
398
|
159 /* #### This is bogus, too. _fmode is set to different values
|
|
160 when we run `xemacs' and `temacs run-emacs'. The sooner we
|
|
161 hit and fix all the weirdities this causes us, the better --kkm */
|
|
162 #if 0
|
100
|
163 /* The default behavior is to treat files as binary and patch up
|
|
164 text files appropriately, in accordance with the MSDOS code. */
|
|
165 _fmode = O_BINARY;
|
398
|
166 #endif
|
100
|
167
|
|
168 #if 0
|
|
169 /* This prevents ctrl-c's in shells running while we're suspended from
|
|
170 having us exit. */
|
|
171 SetConsoleCtrlHandler ((PHANDLER_ROUTINE) ctrl_c_handler, TRUE);
|
|
172 #endif
|
|
173
|
|
174 /* Invoke the NT CRT startup routine now that our housecleaning
|
|
175 is finished. */
|
|
176 #ifdef HAVE_NTGUI
|
|
177 /* determine WinMain args like crt0.c does */
|
|
178 hinst = GetModuleHandle(NULL);
|
|
179 lpCmdLine = GetCommandLine();
|
|
180 nCmdShow = SW_SHOWDEFAULT;
|
|
181 #endif
|
|
182 mainCRTStartup ();
|
|
183 }
|
|
184
|
|
185 /* Dump out .data and .bss sections into a new executable. */
|
|
186 void
|
|
187 unexec (char *new_name, char *old_name, void *start_data, void *start_bss,
|
|
188 void *entry_address)
|
|
189 {
|
|
190 file_data in_file, out_file;
|
|
191 char out_filename[MAX_PATH], in_filename[MAX_PATH];
|
|
192 unsigned long size;
|
|
193 char *ptr;
|
400
|
194 HINSTANCE hImagehelp;
|
100
|
195
|
|
196 /* Make sure that the input and output filenames have the
|
|
197 ".exe" extension...patch them up if they don't. */
|
|
198 strcpy (in_filename, old_name);
|
|
199 ptr = in_filename + strlen (in_filename) - 4;
|
|
200 if (strcmp (ptr, ".exe"))
|
|
201 strcat (in_filename, ".exe");
|
|
202
|
|
203 strcpy (out_filename, new_name);
|
|
204 ptr = out_filename + strlen (out_filename) - 4;
|
|
205 if (strcmp (ptr, ".exe"))
|
|
206 strcat (out_filename, ".exe");
|
|
207
|
|
208 printf ("Dumping from %s\n", in_filename);
|
|
209 printf (" to %s\n", out_filename);
|
|
210
|
|
211 /* We need to round off our heap to NT's allocation unit (64KB). */
|
|
212 round_heap (get_allocation_unit ());
|
|
213
|
|
214 /* Open the undumped executable file. */
|
209
|
215 if (!open_input_file (&in_file, in_filename))
|
|
216 {
|
|
217 printf ("Failed to open %s (%d)...bailing.\n",
|
|
218 in_filename, GetLastError ());
|
|
219 exit (1);
|
|
220 }
|
100
|
221
|
|
222 /* Get the interesting section info, like start and size of .bss... */
|
|
223 get_section_info (&in_file);
|
|
224
|
|
225 /* The size of the dumped executable is the size of the original
|
|
226 executable plus the size of the heap and the size of the .bss section. */
|
|
227 heap_index_in_executable = (unsigned long)
|
|
228 round_to_next ((unsigned char *) in_file.size, get_allocation_unit ());
|
|
229 size = heap_index_in_executable + get_committed_heap_size () + bss_size;
|
209
|
230 if (!open_output_file (&out_file, out_filename, size))
|
|
231 {
|
|
232 printf ("Failed to open %s (%d)...bailing.\n",
|
|
233 out_filename, GetLastError ());
|
|
234 exit (1);
|
|
235 }
|
100
|
236
|
|
237 /* Set the flag (before dumping). */
|
169
|
238 heap_state = HEAP_UNLOADED;
|
100
|
239
|
|
240 copy_executable_and_dump_data_section (&in_file, &out_file);
|
|
241 dump_bss_and_heap (&in_file, &out_file);
|
|
242
|
298
|
243 /* Patch up header fields; profiler is picky about this. */
|
|
244 hImagehelp = LoadLibrary ("imagehlp.dll");
|
|
245 if (hImagehelp)
|
|
246 {
|
|
247 PIMAGE_DOS_HEADER dos_header;
|
|
248 PIMAGE_NT_HEADERS nt_header;
|
400
|
249
|
298
|
250 DWORD headersum;
|
|
251 DWORD checksum;
|
400
|
252 pfnCheckSumMappedFile_t pfnCheckSumMappedFile;
|
298
|
253
|
|
254 dos_header = (PIMAGE_DOS_HEADER) out_file.file_base;
|
|
255 nt_header = (PIMAGE_NT_HEADERS) ((char *) dos_header + dos_header->e_lfanew);
|
|
256
|
|
257 nt_header->OptionalHeader.CheckSum = 0;
|
400
|
258 #if 0
|
|
259 nt_header->FileHeader.TimeDateStamp = time (NULL);
|
|
260 dos_header->e_cp = size / 512;
|
|
261 nt_header->OptionalHeader.SizeOfImage = size;
|
|
262 #endif
|
298
|
263
|
400
|
264 pfnCheckSumMappedFile =
|
|
265 (pfnCheckSumMappedFile_t) GetProcAddress (hImagehelp,
|
|
266 "CheckSumMappedFile");
|
298
|
267 if (pfnCheckSumMappedFile)
|
|
268 {
|
400
|
269 #if 0
|
|
270 nt_header->FileHeader.TimeDateStamp = time (NULL);
|
|
271 #endif
|
298
|
272 pfnCheckSumMappedFile (out_file.file_base,
|
|
273 out_file.size,
|
|
274 &headersum,
|
|
275 &checksum);
|
|
276 nt_header->OptionalHeader.CheckSum = checksum;
|
|
277 }
|
|
278 FreeLibrary (hImagehelp);
|
|
279 }
|
|
280
|
100
|
281 close_file_data (&in_file);
|
|
282 close_file_data (&out_file);
|
|
283 }
|
|
284
|
|
285
|
|
286 /* File handling. */
|
|
287
|
|
288
|
209
|
289 int
|
398
|
290 open_output_file (file_data *p_file, const char *filename, unsigned long size)
|
100
|
291 {
|
|
292 HANDLE file;
|
|
293 HANDLE file_mapping;
|
|
294 void *file_base;
|
|
295
|
|
296 file = CreateFile (filename, GENERIC_READ | GENERIC_WRITE, 0, NULL,
|
|
297 CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
|
|
298 if (file == INVALID_HANDLE_VALUE)
|
209
|
299 return FALSE;
|
298
|
300
|
100
|
301 file_mapping = CreateFileMapping (file, NULL, PAGE_READWRITE,
|
|
302 0, size, NULL);
|
|
303 if (!file_mapping)
|
209
|
304 return FALSE;
|
100
|
305
|
|
306 file_base = MapViewOfFile (file_mapping, FILE_MAP_WRITE, 0, 0, size);
|
400
|
307 if (file_base == NULL)
|
209
|
308 return FALSE;
|
100
|
309
|
|
310 p_file->name = filename;
|
|
311 p_file->size = size;
|
|
312 p_file->file = file;
|
|
313 p_file->file_mapping = file_mapping;
|
400
|
314 p_file->file_base = (char*) file_base;
|
209
|
315
|
|
316 return TRUE;
|
100
|
317 }
|
|
318
|
|
319 /* Routines to manipulate NT executable file sections. */
|
|
320
|
298
|
321 #ifndef DUMP_SEPARATE_SECTION
|
100
|
322 static void
|
|
323 get_bss_info_from_map_file (file_data *p_infile, PUCHAR *p_bss_start,
|
|
324 DWORD *p_bss_size)
|
|
325 {
|
|
326 int n, start, len;
|
|
327 char map_filename[MAX_PATH];
|
|
328 char buffer[256];
|
|
329 FILE *map;
|
|
330
|
|
331 /* Overwrite the .exe extension on the executable file name with
|
|
332 the .map extension. */
|
|
333 strcpy (map_filename, p_infile->name);
|
|
334 n = strlen (map_filename) - 3;
|
|
335 strcpy (&map_filename[n], "map");
|
|
336
|
|
337 map = fopen (map_filename, "r");
|
|
338 if (!map)
|
|
339 {
|
|
340 printf ("Failed to open map file %s, error %d...bailing out.\n",
|
|
341 map_filename, GetLastError ());
|
|
342 exit (-1);
|
|
343 }
|
|
344
|
|
345 while (fgets (buffer, sizeof (buffer), map))
|
|
346 {
|
|
347 if (!(strstr (buffer, ".bss") && strstr (buffer, "DATA")))
|
|
348 continue;
|
|
349 n = sscanf (buffer, " %*d:%x %x", &start, &len);
|
|
350 if (n != 2)
|
|
351 {
|
|
352 printf ("Failed to scan the .bss section line:\n%s", buffer);
|
|
353 exit (-1);
|
|
354 }
|
|
355 break;
|
|
356 }
|
|
357 *p_bss_start = (PUCHAR) start;
|
|
358 *p_bss_size = (DWORD) len;
|
|
359 }
|
298
|
360 #endif
|
209
|
361
|
100
|
362 /* Flip through the executable and cache the info necessary for dumping. */
|
|
363 static void
|
|
364 get_section_info (file_data *p_infile)
|
|
365 {
|
|
366 PIMAGE_DOS_HEADER dos_header;
|
|
367 PIMAGE_NT_HEADERS nt_header;
|
|
368 PIMAGE_SECTION_HEADER section, data_section;
|
|
369 unsigned char *ptr;
|
|
370 int i;
|
|
371
|
|
372 dos_header = (PIMAGE_DOS_HEADER) p_infile->file_base;
|
|
373 if (dos_header->e_magic != IMAGE_DOS_SIGNATURE)
|
|
374 {
|
|
375 printf ("Unknown EXE header in %s...bailing.\n", p_infile->name);
|
|
376 exit (1);
|
|
377 }
|
|
378 nt_header = (PIMAGE_NT_HEADERS) (((unsigned long) dos_header) +
|
|
379 dos_header->e_lfanew);
|
|
380 if (nt_header == NULL)
|
|
381 {
|
|
382 printf ("Failed to find IMAGE_NT_HEADER in %s...bailing.\n",
|
|
383 p_infile->name);
|
|
384 exit (1);
|
|
385 }
|
|
386
|
|
387 /* Check the NT header signature ... */
|
|
388 if (nt_header->Signature != IMAGE_NT_SIGNATURE)
|
|
389 {
|
|
390 printf ("Invalid IMAGE_NT_SIGNATURE 0x%x in %s...bailing.\n",
|
|
391 nt_header->Signature, p_infile->name);
|
|
392 }
|
|
393
|
|
394 /* Flip through the sections for .data and .bss ... */
|
|
395 section = (PIMAGE_SECTION_HEADER) IMAGE_FIRST_SECTION (nt_header);
|
|
396 for (i = 0; i < nt_header->FileHeader.NumberOfSections; i++)
|
|
397 {
|
298
|
398 #ifndef DUMP_SEPARATE_SECTION
|
100
|
399 if (!strcmp (section->Name, ".bss"))
|
|
400 {
|
298
|
401 extern int my_ebss; /* From lastfile.c */
|
|
402
|
100
|
403 ptr = (char *) nt_header->OptionalHeader.ImageBase +
|
|
404 section->VirtualAddress;
|
|
405 bss_start = ptr;
|
298
|
406 bss_size = (char*)&my_ebss - (char*)bss_start;
|
100
|
407 }
|
298
|
408
|
100
|
409 if (!strcmp (section->Name, ".data"))
|
298
|
410 #else
|
|
411 if (!strcmp (section->Name, "xdata"))
|
|
412 #endif
|
100
|
413 {
|
298
|
414 extern char my_edata[]; /* From lastfile.c */
|
100
|
415
|
|
416 /* The .data section. */
|
|
417 data_section = section;
|
|
418 ptr = (char *) nt_header->OptionalHeader.ImageBase +
|
|
419 section->VirtualAddress;
|
|
420 data_start_va = ptr;
|
|
421 data_start_file = section->PointerToRawData;
|
|
422
|
298
|
423 #ifndef DUMP_SEPARATE_SECTION
|
|
424 /* Write only the part of the section that contains emacs data. */
|
100
|
425 data_size = my_edata - data_start_va;
|
298
|
426 #else
|
|
427 /* Write back the full section. */
|
|
428 data_size = section->SizeOfRawData;
|
|
429
|
|
430 /* This code doesn't know how to grow the raw size of a section. */
|
|
431 if (section->SizeOfRawData < section->Misc.VirtualSize)
|
|
432 {
|
|
433 printf ("The emacs data section is smaller than expected"
|
|
434 "...bailing.\n");
|
|
435 exit (1);
|
|
436 }
|
|
437 #endif
|
100
|
438 }
|
|
439 section++;
|
|
440 }
|
|
441
|
298
|
442 #ifndef DUMP_SEPARATE_SECTION
|
304
|
443 if (bss_start == UNINIT_PTR)
|
100
|
444 {
|
|
445 /* Starting with MSVC 4.0, the .bss section has been eliminated
|
|
446 and appended virtually to the end of the .data section. Our
|
|
447 only hint about where the .bss section starts in the address
|
|
448 comes from the SizeOfRawData field in the .data section
|
|
449 header. Unfortunately, this field is only approximate, as it
|
|
450 is a rounded number and is typically rounded just beyond the
|
|
451 start of the .bss section. To find the start and size of the
|
|
452 .bss section exactly, we have to peek into the map file. */
|
298
|
453 extern int my_ebss;
|
|
454
|
100
|
455 get_bss_info_from_map_file (p_infile, &ptr, &bss_size);
|
|
456 bss_start = ptr + nt_header->OptionalHeader.ImageBase
|
|
457 + data_section->VirtualAddress;
|
298
|
458 bss_size = (char*)&my_ebss - (char*)bss_start;
|
100
|
459 }
|
304
|
460 #else
|
|
461 bss_size = 0;
|
298
|
462 #endif
|
100
|
463 }
|
|
464
|
|
465
|
|
466 /* The dump routines. */
|
|
467
|
286
|
468 #ifdef DEBUG_XEMACS
|
|
469 #define DUMP_MSG(x) printf x
|
|
470 #else
|
|
471 #define DUMP_MSG(x)
|
|
472 #endif
|
|
473
|
100
|
474 static void
|
286
|
475 copy_executable_and_dump_data_section (file_data *p_infile,
|
100
|
476 file_data *p_outfile)
|
|
477 {
|
|
478 unsigned char *data_file, *data_va;
|
|
479 unsigned long size, index;
|
286
|
480
|
100
|
481 /* Get a pointer to where the raw data should go in the executable file. */
|
|
482 data_file = (char *) p_outfile->file_base + data_start_file;
|
|
483
|
|
484 /* Get a pointer to the raw data in our address space. */
|
|
485 data_va = data_start_va;
|
286
|
486
|
100
|
487 size = (DWORD) data_file - (DWORD) p_outfile->file_base;
|
286
|
488 DUMP_MSG (("Copying executable up to data section...\n"));
|
|
489 DUMP_MSG (("\t0x%08x Offset in input file.\n", 0));
|
|
490 DUMP_MSG (("\t0x%08x Offset in output file.\n", 0));
|
|
491 DUMP_MSG (("\t0x%08x Size in bytes.\n", size));
|
100
|
492 memcpy (p_outfile->file_base, p_infile->file_base, size);
|
286
|
493
|
100
|
494 size = data_size;
|
298
|
495 DUMP_MSG (("Dumping data section...\n"));
|
286
|
496 DUMP_MSG (("\t0x%08x Address in process.\n", data_va));
|
|
497 DUMP_MSG (("\t0x%08x Offset in output file.\n",
|
400
|
498 (char*)data_file - p_outfile->file_base));
|
286
|
499 DUMP_MSG (("\t0x%08x Size in bytes.\n", size));
|
100
|
500 memcpy (data_file, data_va, size);
|
286
|
501
|
100
|
502 index = (DWORD) data_file + size - (DWORD) p_outfile->file_base;
|
|
503 size = p_infile->size - index;
|
286
|
504 DUMP_MSG (("Copying rest of executable...\n"));
|
|
505 DUMP_MSG (("\t0x%08x Offset in input file.\n", index));
|
|
506 DUMP_MSG (("\t0x%08x Offset in output file.\n", index));
|
|
507 DUMP_MSG (("\t0x%08x Size in bytes.\n", size));
|
100
|
508 memcpy ((char *) p_outfile->file_base + index,
|
|
509 (char *) p_infile->file_base + index, size);
|
|
510 }
|
|
511
|
|
512 static void
|
|
513 dump_bss_and_heap (file_data *p_infile, file_data *p_outfile)
|
|
514 {
|
388
|
515 unsigned char *heap_data;
|
100
|
516 unsigned long size, index;
|
|
517
|
298
|
518 DUMP_MSG (("Dumping heap onto end of executable...\n"));
|
100
|
519
|
|
520 index = heap_index_in_executable;
|
|
521 size = get_committed_heap_size ();
|
|
522 heap_data = get_heap_start ();
|
|
523
|
286
|
524 DUMP_MSG (("\t0x%08x Heap start in process.\n", heap_data));
|
|
525 DUMP_MSG (("\t0x%08x Heap offset in executable.\n", index));
|
|
526 DUMP_MSG (("\t0x%08x Heap size in bytes.\n", size));
|
100
|
527
|
|
528 memcpy ((PUCHAR) p_outfile->file_base + index, heap_data, size);
|
|
529
|
298
|
530 #ifndef DUMP_SEPARATE_SECTION
|
388
|
531 DUMP_MSG (("Dumping bss onto end of executable...\n"));
|
100
|
532
|
|
533 index += size;
|
|
534 size = bss_size;
|
286
|
535
|
388
|
536 DUMP_MSG (("\t0x%08x BSS start in process.\n", bss_start));
|
286
|
537 DUMP_MSG (("\t0x%08x BSS offset in executable.\n", index));
|
|
538 DUMP_MSG (("\t0x%08x BSS size in bytes.\n", size));
|
388
|
539 memcpy ((char *) p_outfile->file_base + index, bss_start, size);
|
298
|
540 #endif
|
100
|
541 }
|
|
542
|
286
|
543 #undef DUMP_MSG
|
100
|
544
|
|
545 /* Reload and remap routines. */
|
|
546
|
|
547
|
|
548 /* Load the dumped .bss section into the .bss area of our address space. */
|
298
|
549 /* Already done if the .bss was part of a separate emacs data section */
|
100
|
550 void
|
|
551 read_in_bss (char *filename)
|
|
552 {
|
298
|
553 #ifndef DUMP_SEPARATE_SECTION
|
100
|
554 HANDLE file;
|
282
|
555 unsigned long index, n_read;
|
100
|
556
|
|
557 file = CreateFile (filename, GENERIC_READ, FILE_SHARE_READ, NULL,
|
|
558 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
|
282
|
559 if (file == INVALID_HANDLE_VALUE)
|
|
560 abort ();
|
|
561
|
100
|
562 /* Seek to where the .bss section is tucked away after the heap... */
|
|
563 index = heap_index_in_executable + get_committed_heap_size ();
|
|
564 if (SetFilePointer (file, index, NULL, FILE_BEGIN) == 0xFFFFFFFF)
|
282
|
565 abort ();
|
100
|
566
|
|
567 /* Ok, read in the saved .bss section and initialize all
|
|
568 uninitialized variables. */
|
|
569 if (!ReadFile (file, bss_start, bss_size, &n_read, NULL))
|
282
|
570 abort ();
|
100
|
571
|
|
572 CloseHandle (file);
|
298
|
573 #endif
|
100
|
574 }
|
|
575
|
|
576 /* Map the heap dumped into the executable file into our address space. */
|
|
577 void
|
|
578 map_in_heap (char *filename)
|
|
579 {
|
|
580 HANDLE file;
|
|
581 HANDLE file_mapping;
|
|
582 void *file_base;
|
|
583 unsigned long size, upper_size, n_read;
|
|
584
|
|
585 file = CreateFile (filename, GENERIC_READ, FILE_SHARE_READ, NULL,
|
|
586 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
|
|
587 if (file == INVALID_HANDLE_VALUE)
|
282
|
588 abort ();
|
|
589
|
100
|
590 size = GetFileSize (file, &upper_size);
|
|
591 file_mapping = CreateFileMapping (file, NULL, PAGE_WRITECOPY,
|
|
592 0, size, NULL);
|
|
593 if (!file_mapping)
|
282
|
594 abort ();
|
|
595
|
100
|
596 size = get_committed_heap_size ();
|
|
597 file_base = MapViewOfFileEx (file_mapping, FILE_MAP_COPY, 0,
|
|
598 heap_index_in_executable, size,
|
|
599 get_heap_start ());
|
|
600 if (file_base != 0)
|
|
601 {
|
|
602 return;
|
|
603 }
|
|
604
|
|
605 /* If we don't succeed with the mapping, then copy from the
|
|
606 data into the heap. */
|
|
607
|
|
608 CloseHandle (file_mapping);
|
|
609
|
|
610 if (VirtualAlloc (get_heap_start (), get_committed_heap_size (),
|
|
611 MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE) == NULL)
|
282
|
612 abort ();
|
100
|
613
|
|
614 /* Seek to the location of the heap data in the executable. */
|
282
|
615 if (SetFilePointer (file, heap_index_in_executable,
|
|
616 NULL, FILE_BEGIN) == 0xFFFFFFFF)
|
|
617 abort ();
|
100
|
618
|
|
619 /* Read in the data. */
|
|
620 if (!ReadFile (file, get_heap_start (),
|
|
621 get_committed_heap_size (), &n_read, NULL))
|
282
|
622 abort ();
|
100
|
623
|
|
624 CloseHandle (file);
|
|
625 }
|