mingw-w64-headers/crt/excpt.h

/**
 * This file has no copyright assigned and is placed in the Public Domain.
 * This file is part of the mingw-w64 runtime package.
 * No warranty is given; refer to the file DISCLAIMER.PD within this package.
 */
#ifndef _INC_EXCPT
#define _INC_EXCPT

#include <crtdefs.h>

_CRT_BEGIN_C_HEADER

  struct _EXCEPTION_POINTERS;

typedef enum _EXCEPTION_DISPOSITION {
  ExceptionContinueExecution = 0,
  ExceptionContinueSearch = 1,
  ExceptionNestedException = 2,
  ExceptionCollidedUnwind = 3
} EXCEPTION_DISPOSITION;

#if (defined(_X86_) && !defined(__x86_64))
  struct _EXCEPTION_RECORD;
  struct _CONTEXT;

  EXCEPTION_DISPOSITION __cdecl _except_handler(struct _EXCEPTION_RECORD *_ExceptionRecord,void *_EstablisherFrame,struct _CONTEXT *_ContextRecord,void *_DispatcherContext);
#elif defined(__ia64__)

  typedef struct _EXCEPTION_POINTERS *Exception_info_ptr;
  struct _EXCEPTION_RECORD;
  struct _CONTEXT;
  struct _DISPATCHER_CONTEXT;

  __MINGW_EXTENSION _CRTIMP EXCEPTION_DISPOSITION __cdecl __C_specific_handler (struct _EXCEPTION_RECORD *_ExceptionRecord,unsigned __int64 _MemoryStackFp,unsigned __int64 _BackingStoreFp,struct _CONTEXT *_ContextRecord,struct _DISPATCHER_CONTEXT *_DispatcherContext,unsigned __int64 _GlobalPointer);
#elif defined(__x86_64) || defined(__arm__) || defined(__aarch64__)

  struct _EXCEPTION_RECORD;
  struct _CONTEXT;
  struct _DISPATCHER_CONTEXT;

  __MINGW_EXTENSION _CRTIMP EXCEPTION_DISPOSITION __cdecl __C_specific_handler (struct _EXCEPTION_RECORD *_ExceptionRecord, void *_EstablisherFrame, struct _CONTEXT *_ContextRecord, struct _DISPATCHER_CONTEXT *_DispatcherContext);
#endif

#define GetExceptionCode _exception_code
#define exception_code _exception_code
#define GetExceptionInformation() ((struct _EXCEPTION_POINTERS *)_exception_info())
#define exception_info() ((struct _EXCEPTION_POINTERS *)_exception_info())
#define AbnormalTermination _abnormal_termination
#define abnormal_termination _abnormal_termination

  unsigned long __cdecl _exception_code(void);
  void *__cdecl _exception_info(void);
  int __cdecl _abnormal_termination(void);

#define EXCEPTION_EXECUTE_HANDLER 1
#define EXCEPTION_CONTINUE_SEARCH 0
#define EXCEPTION_CONTINUE_EXECUTION -1

  /* CRT stuff */
  typedef void (__cdecl * _PHNDLR)(int);

  struct _XCPT_ACTION {
    unsigned long XcptNum;
    int SigNum;
    _PHNDLR XcptAction;
  };

  extern struct _XCPT_ACTION _XcptActTab[];
  extern int _XcptActTabCount;
  extern int _XcptActTabSize;
  extern int _First_FPE_Indx;
  extern int _Num_FPE;

  int __cdecl __CppXcptFilter(unsigned long _ExceptionNum,struct _EXCEPTION_POINTERS * _ExceptionPtr);
  int __cdecl _XcptFilter(unsigned long _ExceptionNum,struct _EXCEPTION_POINTERS * _ExceptionPtr);

  /*
  * The type of function that is expected as an exception handler to be
  * installed with __try1.
  */
  typedef EXCEPTION_DISPOSITION (*PEXCEPTION_HANDLER)(struct _EXCEPTION_RECORD*, void*, struct _CONTEXT*, void*);

#if !defined (HAVE_NO_SEH) && defined (__MINGW_EXCPT_DEFINE_PSDK)
  /*
  * This is not entirely necessary, but it is the structure installed by
  * the __try1 primitive below.
  */
  typedef struct _EXCEPTION_REGISTRATION {
    struct _EXCEPTION_REGISTRATION *prev;
    EXCEPTION_DISPOSITION (*handler)(struct _EXCEPTION_RECORD*, void*, struct _CONTEXT*, void*);
  } EXCEPTION_REGISTRATION, *PEXCEPTION_REGISTRATION;

  typedef EXCEPTION_REGISTRATION EXCEPTION_REGISTRATION_RECORD;
  typedef PEXCEPTION_REGISTRATION PEXCEPTION_REGISTRATION_RECORD;
#endif

#if (defined(_X86_) && !defined(__x86_64))
#define __try1(pHandler) \
  __asm__ __volatile__ ("pushl %0;pushl %%fs:0;movl %%esp,%%fs:0;" : : "g" (pHandler));

#define	__except1	\
  __asm__ __volatile__ ("movl (%%esp),%%eax;movl %%eax,%%fs:0;addl $8,%%esp;" \
  : : : "%eax");
#elif defined(__x86_64)
#define __try1(pHandler) \
    __asm__ __volatile__ ("\t.l_startw:\n" \
    "\t.seh_handler __C_specific_handler, @except\n" \
    "\t.seh_handlerdata\n" \
    "\t.long 1\n" \
    "\t.rva .l_startw, .l_endw, " __MINGW64_STRINGIFY(__MINGW_USYMBOL(pHandler)) " ,.l_endw\n" \
    "\t.text" \
    );
#define __except1 \
    asm ("\tnop\n" \
    "\t.l_endw: nop\n");
#else
#define __try1(pHandler)
#define __except1
#endif

_CRT_END_C_HEADER

#endif