include/except.h

   1 /*
   2  * except.h
   3  * Copyright (c) 1996, Onno Hovers (onno@stack.urc.tue.nl)
   4  */
   5
   6 #ifndef __WINE_EXCEPT_H
   7 #define __WINE_EXCEPT_H
   8
   9 #include "winnt.h"
  10
  11 /*
  12  * the function pointer to a exception handler
  13  */
  14
  15 /* forward definition */
  16 struct __EXCEPTION_FRAME;
  17
  18 typedef DWORD (CALLBACK *PEXCEPTION_HANDLER)( PEXCEPTION_RECORD pexcrec,
  19                                       struct __EXCEPTION_FRAME  *pestframe,
  20                                       PCONTEXT                   pcontext,
  21                                       LPVOID                     pdispatcher);
  22
  23 /*
  24  * The exception frame, used for registering exception handlers
  25  * Win32 cares only about this, but compilers generally emit
  26  * larger exception frames for their own use.
  27  */
  28
  29 typedef struct __EXCEPTION_FRAME
  30 {
  31   struct __EXCEPTION_FRAME *Prev;
  32   PEXCEPTION_HANDLER       Handler;
  33 } EXCEPTION_FRAME, *PEXCEPTION_FRAME;
  34
  35
  36 /*
  37  *  this undocumented function is called when an exception
  38  *  handler wants all the frames to be unwound. RtlUnwind
  39  *  calls all exception handlers with the EH_UNWIND or
  40  *  EH_EXIT_UNWIND flags set in the exception record
  41  *
  42  *  This prototype assumes RtlUnwind takes the same
  43  *  parameters as OS/2 2.0 DosUnwindException
  44  *  Disassembling RtlUnwind shows this is true, except for
  45  *  the TargetEIP parameter, which is unused. There is
  46  *  a fourth parameter, that is used as the eax in the
  47  *  context.
  48  */
  49 void WINAPI RtlUnwind( PEXCEPTION_FRAME pestframe,
  50                        LPVOID unusedEIP,
  51                        PEXCEPTION_RECORD pexcrec,
  52                        DWORD contextEAX );
  53
  54 #endif  /* __WINE_EXCEPT_H */