/***
*ehstate.h - exception handling state management declarations
*
*	Copyright (c) 1993-1995, Microsoft Corporation. All rights reserved.
*
*Purpose:
*	EH State management declarations.  Does target-dependent definitions.
*
*	Macros defined:
*
*	GetCurrentState - determines current state (may call function)
*	SetState - sets current state to specified value (may call function)
*
*       [Internal]
*
*Revision History:
*	05-21-93  BS	Module created.
*	03-03-94  TL	Added Mips (_M_MRX000 >= 4000) changes 
*	09-02-94  SKS	This header file added.
*	09-13-94  GJF	Merged in changes from/for DEC Alpha (from Al Doser,
*			dated 6/20).
*	12-15-94  XY    merged with mac header
*       02-14-95  CFW   Clean up Mac merge.
*       03-29-95  CFW   Add error message to internal headers.
*       12-14-95  JWM   Add "#pragma once".
*
****/

#if _MSC_VER > 1000 /*IFSTRIP=IGN*/
#pragma once
#endif

#ifndef _INC_EHSTATE
#define _INC_EHSTATE

#ifndef _CRTBLD
/*
 * This is an internal C runtime header file. It is used when building
 * the C runtimes only. It is not to be used as a public header file.
 */
#error ERROR: Use of C runtime library internal header file.
#endif /* _CRTBLD */

#if _M_MRX000 >= 4000 /*IFSTRIP=IGN*/

//
// This is a function calls on MIPS, defined in 'ehstate.cxx'
// The function SetState is not used on Mips
//
extern __ehstate_t GetCurrentState( EHRegistrationNode*, DispatcherContext*, FuncInfo* ); 

#elif _M_IX86 >= 300 /*IFSTRIP=IGN*/

//
// In the initial implementation, the state is simply stored in the 
// registration node.
//

#define GetCurrentState( pRN, pDC, pFuncInfo ) 	(pRN->state)

#define SetState( pRN, pDC, pFuncInfo, newState ) 	(pRN->state = newState)

#elif defined(_M_ALPHA)
//
// These macros defined in terms of the EH_STATE macro which lives in ehdata.h.
//
#define GetCurrentState(pRN, pDC, pFuncInfo)    (EH_STATE(pRN, pFuncInfo))
#define SetState(pRN, pDC, pFuncInfo, newState) (EH_STATE(pRN, pFuncInfo)=newState)

#elif defined(_M_M68K)
#define GetCurrentState( pRN, pDC, pFuncInfo ) 	(pRN->state)

#define SetState( pRN, pDC, pFuncInfo, newState ) 	(pRN->state = newState)

#elif defined(_M_MPPC)
extern __ehstate_t GetCurrentState( EHRegistrationNode*, DispatcherContext*, FuncInfo* ); 
extern void SetState(EHRegistrationNode*, DispatcherContext*, FuncInfo*, __ehstate_t, __ehstate_t);

#elif defined(_M_PPC)
//
// This is a function call on PowerPC, defined in 'ehstate.cxx'
// The function SetState is not used on PowerPC
//
extern __ehstate_t GetCurrentState(EHRegistrationNode *, DispatcherContext *, FuncInfo *); 
extern __ehstate_t GetUnwindState(EHRegistrationNode *, DispatcherContext *, FuncInfo *); 
#define SetState(pRN, pDC, pFuncInfo, newState)

#else
#error "State management unknown for this platform "
#endif

#endif /* _INC_EHSTATE */