winedump: Print some basic info for pure DOS file (which fixes segfault while reading DOS files).

tools/winedump/Makefile.in

@@ -10,6 +10,7 @@ MODULE   = none
 
 C_SRCS = \
 	debug.c \
+	dos.c \
 	dump.c \
 	emf.c \
 	le.c \

tools/winedump/dos.c

+/*
+ *	DOS dumping utility
+ *
+ * 	Copyright 2006 Eric Pouech
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#include "config.h"
+#include "wine/port.h"
+
+#include <stdlib.h>
+#include <stdarg.h>
+#include <stdio.h>
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#include <time.h>
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#ifdef HAVE_SYS_MMAN_H
+#include <sys/mman.h>
+#endif
+#include <fcntl.h>
+
+#define NONAMELESSUNION
+#define NONAMELESSSTRUCT
+#include "windef.h"
+#include "winbase.h"
+#include "winedump.h"
+
+void dos_dump(void)
+{
+    const IMAGE_DOS_HEADER*    dh;
+
+    if ((dh = PRD(0, sizeof(IMAGE_DOS_HEADER))))
+    {
+        printf("DOS image:\n");
+        printf("  Signature:            %.2s\n", (const char*)&dh->e_magic);
+        printf("  Bytes on last page:   %u\n", dh->e_cblp);
+        printf("  Number of pages:      %u\n", dh->e_cp);
+        printf("  Relocations:          %u\n", dh->e_crlc);
+        printf("  Size of header:       %u\n", dh->e_cparhdr);
+        printf("  Min extra paragraphs: %u\n", dh->e_minalloc);
+        printf("  Max extra paragraphs: %u\n", dh->e_maxalloc);
+        printf("  Initial stack:        %x:%x\n", dh->e_ss, dh->e_sp);
+        printf("  Checksum:             %x\n", dh->e_csum);
+        printf("  Initial address:      %x:%x\n", dh->e_cs, dh->e_ip);
+        printf("  Relocation (file):    %u\n", dh->e_lfarlc);
+        printf("  Overlay number:       %u\n", dh->e_ovno);
+        printf("  OEM id(info):         %x(%x)\n", dh->e_oemid, dh->e_oeminfo);
+        printf("  Offset to ext header: %x\n", dh->e_lfanew);
+    }
+}

tools/winedump/dump.c

@@ -151,7 +151,7 @@ static const struct dumper
 }
 dumpers[] =
 {
-    {SIG_DOS,           get_kind_exec,  NULL},
+    {SIG_DOS,           get_kind_exec,  dos_dump},
     {SIG_PE,            get_kind_exec,  pe_dump},
     {SIG_DBG,           get_kind_dbg,   dbg_dump},
     {SIG_PDB,           get_kind_pdb,   pdb_dump},

tools/winedump/winedump.h

@@ -241,6 +241,7 @@ void            dump_optional_header(const IMAGE_OPTIONAL_HEADER32 *, UINT);
 void            dump_section(const IMAGE_SECTION_HEADER *);
 
 enum FileSig    get_kind_exec(void);
+void            dos_dump( void );
 void            pe_dump( void );
 void            ne_dump( void );
 void            le_dump( void );