--- /dev/null
+/* Add an uninitialized data section to an executable.
+ Copyright (C) 1999 Free Software Foundation, Inc.
+
+This file is part of GNU Emacs.
+
+GNU Emacs is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Emacs is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Emacs; see the file COPYING. If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.
+
+ Andrew Innes <andrewi@harlequin.co.uk> 04-Jan-1999
+ based on code from unexw32.c
+*/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <time.h>
+#include <windows.h>
+
+/* Include relevant definitions from IMAGEHLP.H, which can be found
+ in \\win32sdk\mstools\samples\image\include\imagehlp.h. */
+
+PIMAGE_NT_HEADERS
+(__stdcall * pfnCheckSumMappedFile) (LPVOID BaseAddress,
+ DWORD FileLength,
+ LPDWORD HeaderSum,
+ LPDWORD CheckSum);
+
+#undef min
+#undef max
+#define min(x, y) (((x) < (y)) ? (x) : (y))
+#define max(x, y) (((x) > (y)) ? (x) : (y))
+
+
+/* File handling. */
+
+typedef struct file_data {
+ char *name;
+ unsigned long size;
+ HANDLE file;
+ HANDLE file_mapping;
+ unsigned char *file_base;
+} file_data;
+
+int
+open_input_file (file_data *p_file, char *filename)
+{
+ HANDLE file;
+ HANDLE file_mapping;
+ void *file_base;
+ unsigned long size, upper_size;
+
+ file = CreateFile (filename, GENERIC_READ, FILE_SHARE_READ, NULL,
+ OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
+ if (file == INVALID_HANDLE_VALUE)
+ return FALSE;
+
+ size = GetFileSize (file, &upper_size);
+ file_mapping = CreateFileMapping (file, NULL, PAGE_READONLY,
+ 0, size, NULL);
+ if (!file_mapping)
+ return FALSE;
+
+ file_base = MapViewOfFile (file_mapping, FILE_MAP_READ, 0, 0, size);
+ if (file_base == 0)
+ return FALSE;
+
+ p_file->name = filename;
+ p_file->size = size;
+ p_file->file = file;
+ p_file->file_mapping = file_mapping;
+ p_file->file_base = file_base;
+
+ return TRUE;
+}
+
+int
+open_output_file (file_data *p_file, char *filename, unsigned long size)
+{
+ HANDLE file;
+ HANDLE file_mapping;
+ void *file_base;
+
+ file = CreateFile (filename, GENERIC_READ | GENERIC_WRITE, 0, NULL,
+ CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
+ if (file == INVALID_HANDLE_VALUE)
+ return FALSE;
+
+ file_mapping = CreateFileMapping (file, NULL, PAGE_READWRITE,
+ 0, size, NULL);
+ if (!file_mapping)
+ return FALSE;
+
+ file_base = MapViewOfFile (file_mapping, FILE_MAP_WRITE, 0, 0, size);
+ if (file_base == 0)
+ return FALSE;
+
+ p_file->name = filename;
+ p_file->size = size;
+ p_file->file = file;
+ p_file->file_mapping = file_mapping;
+ p_file->file_base = file_base;
+
+ return TRUE;
+}
+
+/* Close the system structures associated with the given file. */
+void
+close_file_data (file_data *p_file)
+{
+ UnmapViewOfFile (p_file->file_base);
+ CloseHandle (p_file->file_mapping);
+ /* For the case of output files, set final size. */
+ SetFilePointer (p_file->file, p_file->size, NULL, FILE_BEGIN);
+ SetEndOfFile (p_file->file);
+ CloseHandle (p_file->file);
+}
+
+
+/* Routines to manipulate NT executable file sections. */
+
+unsigned long
+get_unrounded_section_size (PIMAGE_SECTION_HEADER p_section)
+{
+ /* The true section size, before rounding, for an initialized data or
+ code section. (Supposedly some linkers swap the meaning of these
+ two values.) */
+ return min (p_section->SizeOfRawData,
+ p_section->Misc.VirtualSize);
+}
+
+/* Return pointer to section header for named section. */
+IMAGE_SECTION_HEADER *
+find_section (char * name, IMAGE_NT_HEADERS * nt_header)
+{
+ PIMAGE_SECTION_HEADER section;
+ int i;
+
+ section = IMAGE_FIRST_SECTION (nt_header);
+
+ for (i = 0; i < nt_header->FileHeader.NumberOfSections; i++)
+ {
+ if (strcmp (section->Name, name) == 0)
+ return section;
+ section++;
+ }
+ return NULL;
+}
+
+/* Return pointer to section header for section containing the given
+ relative virtual address. */
+IMAGE_SECTION_HEADER *
+rva_to_section (DWORD rva, IMAGE_NT_HEADERS * nt_header)
+{
+ PIMAGE_SECTION_HEADER section;
+ int i;
+
+ section = IMAGE_FIRST_SECTION (nt_header);
+
+ for (i = 0; i < nt_header->FileHeader.NumberOfSections; i++)
+ {
+ /* Some linkers (eg. the NT SDK linker I believe) swapped the
+ meaning of these two values - or rather, they ignored
+ VirtualSize entirely and always set it to zero. This affects
+ some very old exes (eg. gzip dated Dec 1993). Since
+ w32_executable_type relies on this function to work reliably,
+ we need to cope with this. */
+ DWORD real_size = max (section->SizeOfRawData,
+ section->Misc.VirtualSize);
+ if (rva >= section->VirtualAddress
+ && rva < section->VirtualAddress + real_size)
+ return section;
+ section++;
+ }
+ return NULL;
+}
+
+/* Return pointer to section header for section containing the given
+ offset in its raw data area. */
+IMAGE_SECTION_HEADER *
+offset_to_section (DWORD offset, IMAGE_NT_HEADERS * nt_header)
+{
+ PIMAGE_SECTION_HEADER section;
+ int i;
+
+ section = IMAGE_FIRST_SECTION (nt_header);
+
+ for (i = 0; i < nt_header->FileHeader.NumberOfSections; i++)
+ {
+ if (offset >= section->PointerToRawData
+ && offset < section->PointerToRawData + section->SizeOfRawData)
+ return section;
+ section++;
+ }
+ return NULL;
+}
+
+/* Return offset to an object in dst, given offset in src. We assume
+ there is at least one section in both src and dst images, and that
+ the some sections may have been added to dst (after sections in src). */
+static DWORD
+relocate_offset (DWORD offset,
+ IMAGE_NT_HEADERS * src_nt_header,
+ IMAGE_NT_HEADERS * dst_nt_header)
+{
+ PIMAGE_SECTION_HEADER src_section = IMAGE_FIRST_SECTION (src_nt_header);
+ PIMAGE_SECTION_HEADER dst_section = IMAGE_FIRST_SECTION (dst_nt_header);
+ int i = 0;
+
+ while (offset >= src_section->PointerToRawData)
+ {
+ if (offset < src_section->PointerToRawData + src_section->SizeOfRawData)
+ break;
+ i++;
+ if (i == src_nt_header->FileHeader.NumberOfSections)
+ {
+ /* Handle offsets after the last section. */
+ dst_section = IMAGE_FIRST_SECTION (dst_nt_header);
+ dst_section += dst_nt_header->FileHeader.NumberOfSections - 1;
+ while (dst_section->PointerToRawData == 0)
+ dst_section--;
+ while (src_section->PointerToRawData == 0)
+ src_section--;
+ return offset
+ + (dst_section->PointerToRawData + dst_section->SizeOfRawData)
+ - (src_section->PointerToRawData + src_section->SizeOfRawData);
+ }
+ src_section++;
+ dst_section++;
+ }
+ return offset +
+ (dst_section->PointerToRawData - src_section->PointerToRawData);
+}
+
+#define OFFSET_TO_RVA(offset, section) \
+ (section->VirtualAddress + ((DWORD)(offset) - section->PointerToRawData))
+
+#define RVA_TO_OFFSET(rva, section) \
+ (section->PointerToRawData + ((DWORD)(rva) - section->VirtualAddress))
+
+#define RVA_TO_SECTION_OFFSET(rva, section) \
+ ((DWORD)(rva) - section->VirtualAddress)
+
+/* Convert address in executing image to RVA. */
+#define PTR_TO_RVA(ptr) ((DWORD)(ptr) - (DWORD) GetModuleHandle (NULL))
+
+#define PTR_TO_OFFSET(ptr, pfile_data) \
+ ((char *)(ptr) - (pfile_data)->file_base)
+
+#define OFFSET_TO_PTR(offset, pfile_data) \
+ ((pfile_data)->file_base + (DWORD)(offset))
+
+#define ROUND_UP(p, align) (((DWORD)(p) + (align)-1) & ~((align)-1))
+#define ROUND_DOWN(p, align) ((DWORD)(p) & ~((align)-1))
+
+
+static void
+copy_executable_and_add_section (file_data *p_infile,
+ file_data *p_outfile,
+ char *new_section_name,
+ DWORD new_section_size)
+{
+ unsigned char *dst;
+ PIMAGE_DOS_HEADER dos_header;
+ PIMAGE_NT_HEADERS nt_header;
+ PIMAGE_NT_HEADERS dst_nt_header;
+ PIMAGE_SECTION_HEADER section;
+ PIMAGE_SECTION_HEADER dst_section;
+ DWORD offset;
+ int i;
+
+#define COPY_CHUNK(message, src, size) \
+ do { \
+ unsigned char *s = (void *)(src); \
+ unsigned long count = (size); \
+ printf ("%s\n", (message)); \
+ printf ("\t0x%08x Offset in input file.\n", s - p_infile->file_base); \
+ printf ("\t0x%08x Offset in output file.\n", dst - p_outfile->file_base); \
+ printf ("\t0x%08x Size in bytes.\n", count); \
+ memcpy (dst, s, count); \
+ dst += count; \
+ } while (0)
+
+#define DST_TO_OFFSET() PTR_TO_OFFSET (dst, p_outfile)
+#define ROUND_UP_DST(align) \
+ (dst = p_outfile->file_base + ROUND_UP (DST_TO_OFFSET (), (align)))
+
+ /* Copy the source image sequentially, ie. section by section after
+ copying the headers and section table, to simplify the process of
+ adding an extra section table entry (which might force the raw
+ section data to be relocated).
+
+ Note that dst is updated implicitly by each COPY_CHUNK. */
+
+ dos_header = (PIMAGE_DOS_HEADER) p_infile->file_base;
+ nt_header = (PIMAGE_NT_HEADERS) (((unsigned long) dos_header) +
+ dos_header->e_lfanew);
+ section = IMAGE_FIRST_SECTION (nt_header);
+
+ dst = (unsigned char *) p_outfile->file_base;
+
+ COPY_CHUNK ("Copying DOS header...", dos_header,
+ (DWORD) nt_header - (DWORD) dos_header);
+ dst_nt_header = (PIMAGE_NT_HEADERS) dst;
+ COPY_CHUNK ("Copying NT header...", nt_header,
+ (DWORD) section - (DWORD) nt_header);
+ dst_section = (PIMAGE_SECTION_HEADER) dst;
+ COPY_CHUNK ("Copying section table...", section,
+ nt_header->FileHeader.NumberOfSections * sizeof (*section));
+
+ /* To improve the efficiency of demand loading, make the file
+ alignment match the section alignment (VC++ 6.0 does this by
+ default anyway). */
+ dst_nt_header->OptionalHeader.FileAlignment =
+ dst_nt_header->OptionalHeader.SectionAlignment;
+
+ /* Add an uninitialized data section at the end, of the specified name
+ and virtual size. */
+ if (find_section (new_section_name, nt_header) == NULL)
+ /* Leave room for extra section table entry; filled in below. */
+ dst += sizeof (*section);
+ else
+ new_section_name = NULL;
+
+ for (i = 0; i < nt_header->FileHeader.NumberOfSections; i++)
+ {
+ char msg[100];
+ sprintf (msg, "Copying raw data for %s...", section->Name);
+
+ /* Align the section's raw data area. */
+ ROUND_UP_DST (dst_nt_header->OptionalHeader.FileAlignment);
+
+ /* Update the file-relative offset for this section's raw data (if
+ it has any) in case things have been relocated; we will update
+ the other offsets below once we know where everything is. */
+ if (dst_section->PointerToRawData)
+ dst_section->PointerToRawData = DST_TO_OFFSET ();
+
+ /* Can always copy the original raw data. */
+ COPY_CHUNK
+ (msg, OFFSET_TO_PTR (section->PointerToRawData, p_infile),
+ section->SizeOfRawData);
+
+ /* Round up the raw data size to the new alignment. */
+ dst_section->SizeOfRawData =
+ ROUND_UP (dst_section->SizeOfRawData,
+ dst_nt_header->OptionalHeader.FileAlignment);
+
+ section++;
+ dst_section++;
+ }
+
+ /* Pad out the final section raw data area. */
+ ROUND_UP_DST (dst_nt_header->OptionalHeader.FileAlignment);
+
+ /* Add the extra section entry (which adds no raw data). */
+ if (new_section_name != NULL)
+ {
+ dst_nt_header->FileHeader.NumberOfSections++;
+ dst_nt_header->OptionalHeader.SizeOfImage += new_section_size;
+ strncpy (dst_section->Name, new_section_name, sizeof (dst_section->Name));
+ dst_section->VirtualAddress =
+ section[-1].VirtualAddress
+ + ROUND_UP (section[-1].Misc.VirtualSize,
+ dst_nt_header->OptionalHeader.SectionAlignment);
+ dst_section->Misc.VirtualSize = new_section_size;
+ dst_section->PointerToRawData = 0;
+ dst_section->SizeOfRawData = 0;
+ dst_section->Characteristics =
+ IMAGE_SCN_CNT_UNINITIALIZED_DATA
+ | IMAGE_SCN_MEM_READ
+ | IMAGE_SCN_MEM_WRITE;
+ }
+
+ /* Copy remainder of source image. */
+ section--;
+ offset = ROUND_UP (section->PointerToRawData + section->SizeOfRawData,
+ nt_header->OptionalHeader.FileAlignment);
+ COPY_CHUNK
+ ("Copying remainder of executable...",
+ OFFSET_TO_PTR (offset, p_infile),
+ p_infile->size - offset);
+
+ /* Final size for new image. */
+ p_outfile->size = DST_TO_OFFSET ();
+
+ /* Now patch up remaining file-relative offsets. */
+ section = IMAGE_FIRST_SECTION (nt_header);
+ dst_section = IMAGE_FIRST_SECTION (dst_nt_header);
+
+#define ADJUST_OFFSET(var) \
+ do { \
+ if ((var) != 0) \
+ (var) = relocate_offset ((var), nt_header, dst_nt_header); \
+ } while (0)
+
+ dst_nt_header->OptionalHeader.SizeOfInitializedData = 0;
+ dst_nt_header->OptionalHeader.SizeOfUninitializedData = 0;
+ for (i = 0; i < dst_nt_header->FileHeader.NumberOfSections; i++)
+ {
+ /* Recompute data sizes for completeness. */
+ if (dst_section[i].Characteristics & IMAGE_SCN_CNT_INITIALIZED_DATA)
+ dst_nt_header->OptionalHeader.SizeOfInitializedData +=
+ ROUND_UP (dst_section[i].Misc.VirtualSize, dst_nt_header->OptionalHeader.FileAlignment);
+ else if (dst_section[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
+ dst_nt_header->OptionalHeader.SizeOfUninitializedData +=
+ ROUND_UP (dst_section[i].Misc.VirtualSize, dst_nt_header->OptionalHeader.FileAlignment);
+
+ ADJUST_OFFSET (dst_section[i].PointerToLinenumbers);
+ }
+
+ ADJUST_OFFSET (dst_nt_header->FileHeader.PointerToSymbolTable);
+
+ /* Update offsets in debug directory entries. */
+ {
+ IMAGE_DATA_DIRECTORY debug_dir =
+ dst_nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_DEBUG];
+ PIMAGE_DEBUG_DIRECTORY debug_entry;
+
+ section = rva_to_section (debug_dir.VirtualAddress, dst_nt_header);
+ if (section)
+ {
+ debug_entry = (PIMAGE_DEBUG_DIRECTORY)
+ (RVA_TO_OFFSET (debug_dir.VirtualAddress, section) + p_outfile->file_base);
+ debug_dir.Size /= sizeof (IMAGE_DEBUG_DIRECTORY);
+
+ for (i = 0; i < debug_dir.Size; i++, debug_entry++)
+ ADJUST_OFFSET (debug_entry->PointerToRawData);
+ }
+ }
+}
+
+
+int
+main (int argc, char **argv)
+{
+ file_data in_file, out_file;
+ char out_filename[MAX_PATH], in_filename[MAX_PATH];
+ unsigned long size;
+ PIMAGE_DOS_HEADER dos_header;
+ PIMAGE_NT_HEADERS nt_header;
+
+#define OLD_NAME argv[1]
+#define NEW_NAME argv[2]
+#define SECTION_NAME argv[3]
+#define SECTION_SIZE argv[4]
+
+ strcpy (in_filename, OLD_NAME);
+ strcpy (out_filename, NEW_NAME);
+
+ printf ("Dumping from %s\n", in_filename);
+ printf (" to %s\n", out_filename);
+
+ /* Open the undumped executable file. */
+ if (!open_input_file (&in_file, in_filename))
+ {
+ printf ("Failed to open %s (%d)...bailing.\n",
+ in_filename, GetLastError ());
+ exit (1);
+ }
+ dos_header = (PIMAGE_DOS_HEADER) in_file.file_base;
+ nt_header = (PIMAGE_NT_HEADERS) ((char *) dos_header + dos_header->e_lfanew);
+ /* Allow for expansion due to increasing file align to section align.
+ We can overestimate here, since close_file_data will update the
+ size exactly. */
+ size = in_file.size
+ + nt_header->OptionalHeader.SectionAlignment
+ * nt_header->FileHeader.NumberOfSections;
+ if (!open_output_file (&out_file, out_filename, size))
+ {
+ printf ("Failed to open %s (%d)...bailing.\n",
+ out_filename, GetLastError ());
+ exit (1);
+ }
+
+ copy_executable_and_add_section (&in_file, &out_file,
+ SECTION_NAME,
+ atoi (SECTION_SIZE) * 1024 * 1024);
+
+ /* Patch up header fields; profiler is picky about this. */
+ {
+ HANDLE hImagehelp = LoadLibrary ("imagehlp.dll");
+ DWORD headersum;
+ DWORD checksum;
+
+ dos_header = (PIMAGE_DOS_HEADER) out_file.file_base;
+ nt_header = (PIMAGE_NT_HEADERS) ((char *) dos_header + dos_header->e_lfanew);
+
+ nt_header->OptionalHeader.CheckSum = 0;
+// nt_header->FileHeader.TimeDateStamp = time (NULL);
+// dos_header->e_cp = size / 512;
+// nt_header->OptionalHeader.SizeOfImage = size;
+
+ pfnCheckSumMappedFile = (void *) GetProcAddress (hImagehelp, "CheckSumMappedFile");
+ if (pfnCheckSumMappedFile)
+ {
+// nt_header->FileHeader.TimeDateStamp = time (NULL);
+ pfnCheckSumMappedFile (out_file.file_base,
+ out_file.size,
+ &headersum,
+ &checksum);
+ nt_header->OptionalHeader.CheckSum = checksum;
+ }
+ FreeLibrary (hImagehelp);
+ }
+
+ close_file_data (&in_file);
+ close_file_data (&out_file);
+
+ return 0;
+}
+
+/* eof */
projects / emacs.git / commitdiff