patch to MZ_Exec() PE executables

Look reasonable to all of the experts? ;-)

dlls/winedos/module.c:
Chris Morgan 
Add PE support to MZ_Exec().

Index: module.c
===================================================================
RCS file: /home/wine/wine/dlls/winedos/module.c,v
retrieving revision 1.21
diff -u -r1.21 module.c
--- module.c	30 Aug 2002 00:03:25 -0000	1.21
+++ module.c	27 Sep 2002 18:33:58 -0000
@@ -342,14 +342,54 @@
  */
 BOOL WINAPI MZ_Exec( CONTEXT86 *context, LPCSTR filename, BYTE func, LPVOID paramblk )
 {
+  DWORD binType;
+  STARTUPINFOA st;
+  PROCESS_INFORMATION pe;
+  BOOL status;
+
   /* this may only be called from existing DOS processes
    * (i.e. one DOS app spawning another) */
-  /* FIXME: do we want to check binary type first, to check
-   * whether it's a NE/PE executable? */
   HANDLE hFile = CreateFileA( filename, GENERIC_READ, FILE_SHARE_READ,
    		     NULL, OPEN_EXISTING, 0, 0);
   BOOL ret = FALSE;
+
+  if(!GetBinaryTypeA(filename, &binType))   /* determine what kind of binary this is */
+  {
+    return FALSE; /* binary is not an executable */
+  }
+
   if (hFile == INVALID_HANDLE_VALUE) return FALSE;
+
+  /* handle PE executables */
+  if(binType == SCS_32BIT_BINARY)
+  {
+    if(func == 0) /* load and execute */
+    {
+      BYTE fullCmdLine[512];
+      LPBYTE psp_start = (LPBYTE)((DWORD)DOSVM_psp << 4);
+      PDB16 *psp = (PDB16 *)psp_start;
+      ExecBlock *blk = (ExecBlock *)paramblk;
+      LPBYTE cmdline = PTR_REAL_TO_LIN(SELECTOROF(blk->cmdline),OFFSETOF(blk->cmdline));
+      LPBYTE envblock = PTR_REAL_TO_LIN(psp->environment, 0);
+
+      cmdline[strlen(cmdline) - 1] = 0; /* remove the \r at the end */
+      cmdline++; /* the first character contains the length of the command line */
+
+      snprintf(fullCmdLine, sizeof(fullCmdLine), "%s %s", filename, cmdline); /* build the full command line */
+
+      ZeroMemory (&st, sizeof(STARTUPINFOA));
+      st.cb = sizeof(STARTUPINFOA);
+      status = CreateProcessA (NULL, fullCmdLine, NULL, NULL, TRUE,
+               0, envblock, NULL, &st, &pe);
+      return TRUE;
+    } else
+    {
+      FIXME("EXEC type of %d not implemented for PE executables\n", func);
+      return FALSE;
+    }
+  } /* if(binType == SCS_32BIT_BINARY) */
+
+  /* handle dos executables */
   switch (func) {
   case 0: /* load and execute */
   case 1: /* load but don't execute */