1 /* unexec for GNU Emacs on Windows NT.
2 Copyright (C) 1994 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA.
21 Geoff Voelker (voelker@cs.washington.edu) 8-12-94
26 #include <stdlib.h> /* _fmode */
32 /* Include relevant definitions from IMAGEHLP.H, which can be found
33 in \\win32sdk\mstools\samples\image\include\imagehlp.h. */
36 (__stdcall
* pfnCheckSumMappedFile
) (LPVOID BaseAddress
,
41 extern BOOL
ctrl_c_handler (unsigned long type
);
43 extern char my_begdata
[];
44 extern char my_edata
[];
45 extern char my_begbss
[];
46 extern char my_endbss
[];
47 extern char *my_begbss_static
;
48 extern char *my_endbss_static
;
54 #define min(x, y) (((x) < (y)) ? (x) : (y))
55 #define max(x, y) (((x) > (y)) ? (x) : (y))
57 /* Basically, our "initialized" flag. */
58 BOOL using_dynamic_heap
= FALSE
;
60 int open_input_file (file_data
*p_file
, char *name
);
61 int open_output_file (file_data
*p_file
, char *name
, unsigned long size
);
62 void close_file_data (file_data
*p_file
);
64 void get_section_info (file_data
*p_file
);
65 void copy_executable_and_dump_data (file_data
*, file_data
*);
66 void dump_bss_and_heap (file_data
*p_infile
, file_data
*p_outfile
);
68 /* Cached info about the .data section in the executable. */
69 PIMAGE_SECTION_HEADER data_section
;
70 PUCHAR data_start
= 0;
73 /* Cached info about the .bss section in the executable. */
74 PIMAGE_SECTION_HEADER bss_section
;
77 DWORD extra_bss_size
= 0;
78 /* bss data that is static might be discontiguous from non-static. */
79 PIMAGE_SECTION_HEADER bss_section_static
;
80 PUCHAR bss_start_static
= 0;
81 DWORD bss_size_static
= 0;
82 DWORD extra_bss_size_static
= 0;
84 PIMAGE_SECTION_HEADER heap_section
;
87 HINSTANCE hinst
= NULL
;
88 HINSTANCE hprevinst
= NULL
;
91 #endif /* HAVE_NTGUI */
93 /* Startup code for running on NT. When we are running as the dumped
94 version, we need to bootstrap our heap and .bss section into our
95 address space before we can actually hand off control to the startup
96 code supplied by NT (primarily because that code relies upon malloc ()). */
100 extern void mainCRTStartup (void);
103 /* Give us a way to debug problems with crashes on startup when
104 running under the MSVC profiler. */
105 if (GetEnvironmentVariable ("EMACS_DEBUG", NULL
, 0) > 0)
109 /* Cache system info, e.g., the NT page size. */
110 cache_system_info ();
112 /* Grab our malloc arena space now, before CRT starts up. */
115 /* The default behavior is to treat files as binary and patch up
116 text files appropriately, in accordance with the MSDOS code. */
119 /* This prevents ctrl-c's in shells running while we're suspended from
121 SetConsoleCtrlHandler ((PHANDLER_ROUTINE
) ctrl_c_handler
, TRUE
);
123 /* Prevent Emacs from being locked up (eg. in batch mode) when
124 accessing devices that aren't mounted (eg. removable media drives). */
125 SetErrorMode (SEM_FAILCRITICALERRORS
);
127 /* Invoke the NT CRT startup routine now that our housecleaning
130 /* determine WinMain args like crt0.c does */
131 hinst
= GetModuleHandle(NULL
);
132 lpCmdLine
= GetCommandLine();
133 nCmdShow
= SW_SHOWDEFAULT
;
142 open_input_file (file_data
*p_file
, char *filename
)
147 unsigned long size
, upper_size
;
149 file
= CreateFile (filename
, GENERIC_READ
, FILE_SHARE_READ
, NULL
,
150 OPEN_EXISTING
, FILE_ATTRIBUTE_NORMAL
, 0);
151 if (file
== INVALID_HANDLE_VALUE
)
154 size
= GetFileSize (file
, &upper_size
);
155 file_mapping
= CreateFileMapping (file
, NULL
, PAGE_READONLY
,
160 file_base
= MapViewOfFile (file_mapping
, FILE_MAP_READ
, 0, 0, size
);
164 p_file
->name
= filename
;
167 p_file
->file_mapping
= file_mapping
;
168 p_file
->file_base
= file_base
;
174 open_output_file (file_data
*p_file
, char *filename
, unsigned long size
)
180 file
= CreateFile (filename
, GENERIC_READ
| GENERIC_WRITE
, 0, NULL
,
181 CREATE_ALWAYS
, FILE_ATTRIBUTE_NORMAL
, 0);
182 if (file
== INVALID_HANDLE_VALUE
)
185 file_mapping
= CreateFileMapping (file
, NULL
, PAGE_READWRITE
,
190 file_base
= MapViewOfFile (file_mapping
, FILE_MAP_WRITE
, 0, 0, size
);
194 p_file
->name
= filename
;
197 p_file
->file_mapping
= file_mapping
;
198 p_file
->file_base
= file_base
;
203 /* Close the system structures associated with the given file. */
205 close_file_data (file_data
*p_file
)
207 UnmapViewOfFile (p_file
->file_base
);
208 CloseHandle (p_file
->file_mapping
);
209 /* For the case of output files, set final size. */
210 SetFilePointer (p_file
->file
, p_file
->size
, NULL
, FILE_BEGIN
);
211 SetEndOfFile (p_file
->file
);
212 CloseHandle (p_file
->file
);
216 /* Routines to manipulate NT executable file sections. */
218 /* Return pointer to section header for named section. */
219 IMAGE_SECTION_HEADER
*
220 find_section (char * name
, IMAGE_NT_HEADERS
* nt_header
)
222 PIMAGE_SECTION_HEADER section
;
225 section
= IMAGE_FIRST_SECTION (nt_header
);
227 for (i
= 0; i
< nt_header
->FileHeader
.NumberOfSections
; i
++)
229 if (strcmp (section
->Name
, name
) == 0)
236 /* Return pointer to section header for section containing the given
237 relative virtual address. */
238 IMAGE_SECTION_HEADER
*
239 rva_to_section (DWORD rva
, IMAGE_NT_HEADERS
* nt_header
)
241 PIMAGE_SECTION_HEADER section
;
244 section
= IMAGE_FIRST_SECTION (nt_header
);
246 for (i
= 0; i
< nt_header
->FileHeader
.NumberOfSections
; i
++)
248 /* Some linkers (eg. the NT SDK linker I believe) swapped the
249 meaning of these two values - or rather, they ignored
250 VirtualSize entirely and always set it to zero. This affects
251 some very old exes (eg. gzip dated Dec 1993). Since
252 w32_executable_type relies on this function to work reliably,
253 we need to cope with this. */
254 DWORD real_size
= max (section
->SizeOfRawData
,
255 section
->Misc
.VirtualSize
);
256 if (rva
>= section
->VirtualAddress
257 && rva
< section
->VirtualAddress
+ real_size
)
264 /* Return pointer to section header for section containing the given
265 offset in its raw data area. */
266 IMAGE_SECTION_HEADER
*
267 offset_to_section (DWORD offset
, IMAGE_NT_HEADERS
* nt_header
)
269 PIMAGE_SECTION_HEADER section
;
272 section
= IMAGE_FIRST_SECTION (nt_header
);
274 for (i
= 0; i
< nt_header
->FileHeader
.NumberOfSections
; i
++)
276 if (offset
>= section
->PointerToRawData
277 && offset
< section
->PointerToRawData
+ section
->SizeOfRawData
)
284 /* Return offset to an object in dst, given offset in src. We assume
285 there is at least one section in both src and dst images, and that
286 the some sections may have been added to dst (after sections in src). */
288 relocate_offset (DWORD offset
,
289 IMAGE_NT_HEADERS
* src_nt_header
,
290 IMAGE_NT_HEADERS
* dst_nt_header
)
292 PIMAGE_SECTION_HEADER src_section
= IMAGE_FIRST_SECTION (src_nt_header
);
293 PIMAGE_SECTION_HEADER dst_section
= IMAGE_FIRST_SECTION (dst_nt_header
);
296 while (offset
>= src_section
->PointerToRawData
)
298 if (offset
< src_section
->PointerToRawData
+ src_section
->SizeOfRawData
)
301 if (i
== src_nt_header
->FileHeader
.NumberOfSections
)
303 /* Handle offsets after the last section. */
304 dst_section
= IMAGE_FIRST_SECTION (dst_nt_header
);
305 dst_section
+= dst_nt_header
->FileHeader
.NumberOfSections
- 1;
306 while (dst_section
->PointerToRawData
== 0)
308 while (src_section
->PointerToRawData
== 0)
311 + (dst_section
->PointerToRawData
+ dst_section
->SizeOfRawData
)
312 - (src_section
->PointerToRawData
+ src_section
->SizeOfRawData
);
318 (dst_section
->PointerToRawData
- src_section
->PointerToRawData
);
321 #define OFFSET_TO_RVA(offset, section) \
322 (section->VirtualAddress + ((DWORD)(offset) - section->PointerToRawData))
324 #define RVA_TO_OFFSET(rva, section) \
325 (section->PointerToRawData + ((DWORD)(rva) - section->VirtualAddress))
327 #define RVA_TO_SECTION_OFFSET(rva, section) \
328 ((DWORD)(rva) - section->VirtualAddress)
330 /* Convert address in executing image to RVA. */
331 #define PTR_TO_RVA(ptr) ((DWORD)(ptr) - (DWORD) GetModuleHandle (NULL))
333 #define PTR_TO_OFFSET(ptr, pfile_data) \
334 ((char *)(ptr) - (pfile_data)->file_base)
336 #define OFFSET_TO_PTR(offset, pfile_data) \
337 ((pfile_data)->file_base + (DWORD)(offset))
340 /* Flip through the executable and cache the info necessary for dumping. */
342 get_section_info (file_data
*p_infile
)
344 PIMAGE_DOS_HEADER dos_header
;
345 PIMAGE_NT_HEADERS nt_header
;
346 PIMAGE_SECTION_HEADER section
;
349 dos_header
= (PIMAGE_DOS_HEADER
) p_infile
->file_base
;
350 if (dos_header
->e_magic
!= IMAGE_DOS_SIGNATURE
)
352 printf ("Unknown EXE header in %s...bailing.\n", p_infile
->name
);
355 nt_header
= (PIMAGE_NT_HEADERS
) (((unsigned long) dos_header
) +
356 dos_header
->e_lfanew
);
357 if (nt_header
== NULL
)
359 printf ("Failed to find IMAGE_NT_HEADER in %s...bailing.\n",
364 /* Check the NT header signature ... */
365 if (nt_header
->Signature
!= IMAGE_NT_SIGNATURE
)
367 printf ("Invalid IMAGE_NT_SIGNATURE 0x%x in %s...bailing.\n",
368 nt_header
->Signature
, p_infile
->name
);
372 /* Locate the ".data" and ".bss" sections for Emacs. (Note that the
373 actual section names are probably different from these, and might
374 actually be the same section.)
376 We do this as follows: first we determine the virtual address
377 ranges in this process for the data and bss variables that we wish
378 to preserve. Then we map these VAs to the section entries in the
379 source image. Finally, we determine the new size of the raw data
380 area for the bss section, so we can make the new image the correct
383 /* We arrange for the Emacs initialized data to be in a separate
384 section if possible, because we cannot rely on my_begdata and
385 my_edata marking out the full extent of the initialized data, at
386 least on the Alpha where the linker freely reorders variables
387 across libraries. If we can arrange for this, all we need to do is
388 find the start and size of the EMDATA section. */
389 data_section
= find_section ("EMDATA", nt_header
);
392 data_start
= (char *) nt_header
->OptionalHeader
.ImageBase
+
393 data_section
->VirtualAddress
;
394 data_size
= data_section
->Misc
.VirtualSize
;
398 /* Fallback on the old method if compiler doesn't support the
399 data_set #pragma (or its equivalent). */
400 data_start
= my_begdata
;
401 data_size
= my_edata
- my_begdata
;
402 data_section
= rva_to_section (PTR_TO_RVA (my_begdata
), nt_header
);
403 if (data_section
!= rva_to_section (PTR_TO_RVA (my_edata
), nt_header
))
405 printf ("Initialized data is not in a single section...bailing\n");
410 /* As noted in lastfile.c, the Alpha (but not the Intel) MSVC linker
411 globally segregates all static and public bss data (ie. across all
412 linked modules, not just per module), so we must take both static
413 and public bss areas into account to determine the true extent of
414 the bss area used by Emacs.
416 To be strictly correct, we dump the static and public bss areas
417 used by Emacs separately if non-overlapping (since otherwise we are
418 dumping bss data belonging to system libraries, eg. the static bss
419 system data on the Alpha). */
421 bss_start
= my_begbss
;
422 bss_size
= my_endbss
- my_begbss
;
423 bss_section
= rva_to_section (PTR_TO_RVA (my_begbss
), nt_header
);
424 if (bss_section
!= rva_to_section (PTR_TO_RVA (my_endbss
), nt_header
))
426 printf ("Uninitialized data is not in a single section...bailing\n");
429 /* Compute how much the .bss section's raw data will grow. */
431 ROUND_UP (RVA_TO_SECTION_OFFSET (PTR_TO_RVA (my_endbss
), bss_section
),
432 nt_header
->OptionalHeader
.FileAlignment
)
433 - bss_section
->SizeOfRawData
;
435 bss_start_static
= my_begbss_static
;
436 bss_size_static
= my_endbss_static
- my_begbss_static
;
437 bss_section_static
= rva_to_section (PTR_TO_RVA (my_begbss_static
), nt_header
);
438 if (bss_section_static
!= rva_to_section (PTR_TO_RVA (my_endbss_static
), nt_header
))
440 printf ("Uninitialized static data is not in a single section...bailing\n");
443 /* Compute how much the static .bss section's raw data will grow. */
444 extra_bss_size_static
=
445 ROUND_UP (RVA_TO_SECTION_OFFSET (PTR_TO_RVA (my_endbss_static
), bss_section_static
),
446 nt_header
->OptionalHeader
.FileAlignment
)
447 - bss_section_static
->SizeOfRawData
;
449 /* Combine the bss sections into one if they overlap. */
451 if (bss_start
< bss_start_static
)
453 if (bss_start_static
< bss_start
+ bss_size
)
458 if (bss_start
< bss_start_static
+ bss_size_static
)
463 if (bss_section
!= bss_section_static
)
465 printf ("BSS data not in a single section...bailing\n");
468 bss_start
= min (bss_start
, bss_start_static
);
469 bss_size
= max (my_endbss
, my_endbss_static
) - bss_start
;
470 bss_section_static
= 0;
471 extra_bss_size_static
= 0;
474 heap_section
= rva_to_section (PTR_TO_RVA (get_heap_start ()), nt_header
);
478 /* The dump routines. */
481 copy_executable_and_dump_data (file_data
*p_infile
,
482 file_data
*p_outfile
)
484 unsigned char *dst
, *dst_save
;
485 PIMAGE_DOS_HEADER dos_header
;
486 PIMAGE_NT_HEADERS nt_header
;
487 PIMAGE_NT_HEADERS dst_nt_header
;
488 PIMAGE_SECTION_HEADER section
;
489 PIMAGE_SECTION_HEADER dst_section
;
493 #define COPY_CHUNK(message, src, size) \
495 unsigned char *s = (void *)(src); \
496 unsigned long count = (size); \
497 printf ("%s\n", (message)); \
498 printf ("\t0x%08x Offset in input file.\n", s - p_infile->file_base); \
499 printf ("\t0x%08x Offset in output file.\n", dst - p_outfile->file_base); \
500 printf ("\t0x%08x Size in bytes.\n", count); \
501 memcpy (dst, s, count); \
505 #define COPY_PROC_CHUNK(message, src, size) \
507 unsigned char *s = (void *)(src); \
508 unsigned long count = (size); \
509 printf ("%s\n", (message)); \
510 printf ("\t0x%08x Address in process.\n", s); \
511 printf ("\t0x%08x Offset in output file.\n", dst - p_outfile->file_base); \
512 printf ("\t0x%08x Size in bytes.\n", count); \
513 memcpy (dst, s, count); \
517 #define DST_TO_OFFSET() PTR_TO_OFFSET (dst, p_outfile)
518 #define ROUND_UP_DST(align) \
519 (dst = p_outfile->file_base + ROUND_UP (DST_TO_OFFSET (), (align)))
520 #define ROUND_UP_DST_AND_ZERO(align) \
522 unsigned char *newdst = p_outfile->file_base \
523 + ROUND_UP (DST_TO_OFFSET (), (align)); \
524 /* Zero the alignment slop; it may actually initialize real data. */ \
525 memset (dst, 0, newdst - dst); \
529 /* Copy the source image sequentially, ie. section by section after
530 copying the headers and section table, to simplify the process of
531 dumping the raw data for the bss and heap sections.
533 Note that dst is updated implicitly by each COPY_CHUNK. */
535 dos_header
= (PIMAGE_DOS_HEADER
) p_infile
->file_base
;
536 nt_header
= (PIMAGE_NT_HEADERS
) (((unsigned long) dos_header
) +
537 dos_header
->e_lfanew
);
538 section
= IMAGE_FIRST_SECTION (nt_header
);
540 dst
= (unsigned char *) p_outfile
->file_base
;
542 COPY_CHUNK ("Copying DOS header...", dos_header
,
543 (DWORD
) nt_header
- (DWORD
) dos_header
);
544 dst_nt_header
= (PIMAGE_NT_HEADERS
) dst
;
545 COPY_CHUNK ("Copying NT header...", nt_header
,
546 (DWORD
) section
- (DWORD
) nt_header
);
547 dst_section
= (PIMAGE_SECTION_HEADER
) dst
;
548 COPY_CHUNK ("Copying section table...", section
,
549 nt_header
->FileHeader
.NumberOfSections
* sizeof (*section
));
551 /* Align the first section's raw data area, and set the header size
552 field accordingly. */
553 ROUND_UP_DST_AND_ZERO (dst_nt_header
->OptionalHeader
.FileAlignment
);
554 dst_nt_header
->OptionalHeader
.SizeOfHeaders
= DST_TO_OFFSET ();
556 for (i
= 0; i
< nt_header
->FileHeader
.NumberOfSections
; i
++)
559 sprintf (msg
, "Copying raw data for %s...", section
->Name
);
563 /* Update the file-relative offset for this section's raw data (if
564 it has any) in case things have been relocated; we will update
565 the other offsets below once we know where everything is. */
566 if (dst_section
->PointerToRawData
)
567 dst_section
->PointerToRawData
= DST_TO_OFFSET ();
569 /* Can always copy the original raw data. */
571 (msg
, OFFSET_TO_PTR (section
->PointerToRawData
, p_infile
),
572 section
->SizeOfRawData
);
573 /* Ensure alignment slop is zeroed. */
574 ROUND_UP_DST_AND_ZERO (dst_nt_header
->OptionalHeader
.FileAlignment
);
576 /* Note that various sections below may be aliases. */
577 if (section
== data_section
)
580 + RVA_TO_SECTION_OFFSET (PTR_TO_RVA (data_start
), dst_section
);
581 COPY_PROC_CHUNK ("Dumping initialized data...", data_start
, data_size
);
582 dst
= dst_save
+ dst_section
->SizeOfRawData
;
584 if (section
== bss_section
)
586 /* Dump contents of bss variables, adjusting the section's raw
587 data size as necessary. */
589 + RVA_TO_SECTION_OFFSET (PTR_TO_RVA (bss_start
), dst_section
);
590 COPY_PROC_CHUNK ("Dumping bss data...", bss_start
, bss_size
);
591 ROUND_UP_DST (dst_nt_header
->OptionalHeader
.FileAlignment
);
592 dst_section
->PointerToRawData
= PTR_TO_OFFSET (dst_save
, p_outfile
);
593 /* Determine new size of raw data area. */
594 dst
= max (dst
, dst_save
+ dst_section
->SizeOfRawData
);
595 dst_section
->SizeOfRawData
= dst
- dst_save
;
596 dst_section
->Characteristics
&= ~IMAGE_SCN_CNT_UNINITIALIZED_DATA
;
597 dst_section
->Characteristics
|= IMAGE_SCN_CNT_INITIALIZED_DATA
;
599 if (section
== bss_section_static
)
601 /* Dump contents of static bss variables, adjusting the
602 section's raw data size as necessary. */
604 + RVA_TO_SECTION_OFFSET (PTR_TO_RVA (bss_start_static
), dst_section
);
605 COPY_PROC_CHUNK ("Dumping static bss data...", bss_start_static
, bss_size_static
);
606 ROUND_UP_DST (dst_nt_header
->OptionalHeader
.FileAlignment
);
607 dst_section
->PointerToRawData
= PTR_TO_OFFSET (dst_save
, p_outfile
);
608 /* Determine new size of raw data area. */
609 dst
= max (dst
, dst_save
+ dst_section
->SizeOfRawData
);
610 dst_section
->SizeOfRawData
= dst
- dst_save
;
611 dst_section
->Characteristics
&= ~IMAGE_SCN_CNT_UNINITIALIZED_DATA
;
612 dst_section
->Characteristics
|= IMAGE_SCN_CNT_INITIALIZED_DATA
;
614 if (section
== heap_section
)
616 DWORD heap_start
= get_heap_start ();
617 DWORD heap_size
= get_committed_heap_size ();
619 /* Dump the used portion of the predump heap, adjusting the
620 section's size to the appropriate size. */
622 + RVA_TO_SECTION_OFFSET (PTR_TO_RVA (heap_start
), dst_section
);
623 COPY_PROC_CHUNK ("Dumping heap...", heap_start
, heap_size
);
624 ROUND_UP_DST (dst_nt_header
->OptionalHeader
.FileAlignment
);
625 dst_section
->PointerToRawData
= PTR_TO_OFFSET (dst_save
, p_outfile
);
626 /* Determine new size of raw data area. */
627 dst
= max (dst
, dst_save
+ dst_section
->SizeOfRawData
);
628 dst_section
->SizeOfRawData
= dst
- dst_save
;
629 /* Reduce the size of the heap section to fit (must be last
631 dst_nt_header
->OptionalHeader
.SizeOfImage
-=
632 dst_section
->Misc
.VirtualSize
633 - ROUND_UP (dst_section
->SizeOfRawData
,
634 dst_nt_header
->OptionalHeader
.SectionAlignment
);
635 dst_section
->Misc
.VirtualSize
=
636 ROUND_UP (dst_section
->SizeOfRawData
,
637 dst_nt_header
->OptionalHeader
.SectionAlignment
);
638 dst_section
->Characteristics
&= ~IMAGE_SCN_CNT_UNINITIALIZED_DATA
;
639 dst_section
->Characteristics
|= IMAGE_SCN_CNT_INITIALIZED_DATA
;
642 /* Align the section's raw data area. */
643 ROUND_UP_DST (dst_nt_header
->OptionalHeader
.FileAlignment
);
649 /* Copy remainder of source image. */
652 while (section
->PointerToRawData
== 0);
653 offset
= ROUND_UP (section
->PointerToRawData
+ section
->SizeOfRawData
,
654 nt_header
->OptionalHeader
.FileAlignment
);
656 ("Copying remainder of executable...",
657 OFFSET_TO_PTR (offset
, p_infile
),
658 p_infile
->size
- offset
);
660 /* Final size for new image. */
661 p_outfile
->size
= DST_TO_OFFSET ();
663 /* Now patch up remaining file-relative offsets. */
664 section
= IMAGE_FIRST_SECTION (nt_header
);
665 dst_section
= IMAGE_FIRST_SECTION (dst_nt_header
);
667 #define ADJUST_OFFSET(var) \
670 (var) = relocate_offset ((var), nt_header, dst_nt_header); \
673 dst_nt_header
->OptionalHeader
.SizeOfInitializedData
= 0;
674 dst_nt_header
->OptionalHeader
.SizeOfUninitializedData
= 0;
675 for (i
= 0; i
< dst_nt_header
->FileHeader
.NumberOfSections
; i
++)
677 /* Recompute data sizes for completeness. */
678 if (dst_section
[i
].Characteristics
& IMAGE_SCN_CNT_INITIALIZED_DATA
)
679 dst_nt_header
->OptionalHeader
.SizeOfInitializedData
+=
680 ROUND_UP (dst_section
[i
].Misc
.VirtualSize
, dst_nt_header
->OptionalHeader
.FileAlignment
);
681 else if (dst_section
[i
].Characteristics
& IMAGE_SCN_CNT_UNINITIALIZED_DATA
)
682 dst_nt_header
->OptionalHeader
.SizeOfUninitializedData
+=
683 ROUND_UP (dst_section
[i
].Misc
.VirtualSize
, dst_nt_header
->OptionalHeader
.FileAlignment
);
685 ADJUST_OFFSET (dst_section
[i
].PointerToLinenumbers
);
688 ADJUST_OFFSET (dst_nt_header
->FileHeader
.PointerToSymbolTable
);
690 /* Update offsets in debug directory entries. */
692 IMAGE_DATA_DIRECTORY debug_dir
=
693 dst_nt_header
->OptionalHeader
.DataDirectory
[IMAGE_DIRECTORY_ENTRY_DEBUG
];
694 PIMAGE_DEBUG_DIRECTORY debug_entry
;
696 section
= rva_to_section (debug_dir
.VirtualAddress
, dst_nt_header
);
699 debug_entry
= (PIMAGE_DEBUG_DIRECTORY
)
700 (RVA_TO_OFFSET (debug_dir
.VirtualAddress
, section
) + p_outfile
->file_base
);
701 debug_dir
.Size
/= sizeof (IMAGE_DEBUG_DIRECTORY
);
703 for (i
= 0; i
< debug_dir
.Size
; i
++, debug_entry
++)
704 ADJUST_OFFSET (debug_entry
->PointerToRawData
);
710 /* Dump out .data and .bss sections into a new executable. */
712 unexec (char *new_name
, char *old_name
, void *start_data
, void *start_bss
,
715 file_data in_file
, out_file
;
716 char out_filename
[MAX_PATH
], in_filename
[MAX_PATH
];
720 /* Make sure that the input and output filenames have the
721 ".exe" extension...patch them up if they don't. */
722 strcpy (in_filename
, old_name
);
723 ptr
= in_filename
+ strlen (in_filename
) - 4;
724 if (strcmp (ptr
, ".exe"))
725 strcat (in_filename
, ".exe");
727 strcpy (out_filename
, new_name
);
728 ptr
= out_filename
+ strlen (out_filename
) - 4;
729 if (strcmp (ptr
, ".exe"))
730 strcat (out_filename
, ".exe");
732 printf ("Dumping from %s\n", in_filename
);
733 printf (" to %s\n", out_filename
);
735 /* We need to round off our heap to NT's page size. */
736 round_heap (get_page_size ());
738 /* Open the undumped executable file. */
739 if (!open_input_file (&in_file
, in_filename
))
741 printf ("Failed to open %s (%d)...bailing.\n",
742 in_filename
, GetLastError ());
746 /* Get the interesting section info, like start and size of .bss... */
747 get_section_info (&in_file
);
749 /* The size of the dumped executable is the size of the original
750 executable plus the size of the heap and the size of the .bss section. */
751 size
= in_file
.size
+
752 get_committed_heap_size () +
754 extra_bss_size_static
;
755 if (!open_output_file (&out_file
, out_filename
, size
))
757 printf ("Failed to open %s (%d)...bailing.\n",
758 out_filename
, GetLastError ());
762 /* Set the flag (before dumping). */
763 using_dynamic_heap
= TRUE
;
765 copy_executable_and_dump_data (&in_file
, &out_file
);
767 /* Patch up header fields; profiler is picky about this. */
769 PIMAGE_DOS_HEADER dos_header
;
770 PIMAGE_NT_HEADERS nt_header
;
771 HANDLE hImagehelp
= LoadLibrary ("imagehlp.dll");
775 dos_header
= (PIMAGE_DOS_HEADER
) out_file
.file_base
;
776 nt_header
= (PIMAGE_NT_HEADERS
) ((char *) dos_header
+ dos_header
->e_lfanew
);
778 nt_header
->OptionalHeader
.CheckSum
= 0;
779 // nt_header->FileHeader.TimeDateStamp = time (NULL);
780 // dos_header->e_cp = size / 512;
781 // nt_header->OptionalHeader.SizeOfImage = size;
783 pfnCheckSumMappedFile
= (void *) GetProcAddress (hImagehelp
, "CheckSumMappedFile");
784 if (pfnCheckSumMappedFile
)
786 // nt_header->FileHeader.TimeDateStamp = time (NULL);
787 pfnCheckSumMappedFile (out_file
.file_base
,
791 nt_header
->OptionalHeader
.CheckSum
= checksum
;
793 FreeLibrary (hImagehelp
);
796 close_file_data (&in_file
);
797 close_file_data (&out_file
);