/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#ifndef OS_CPU_WINDOWS_X86_VM_UNWIND_WINDOWS_X86_HPP

#define OS_CPU_WINDOWS_X86_VM_UNWIND_WINDOWS_X86_HPP

#ifdef AMD64

typedef unsigned char UBYTE;

#define UNW_FLAG_EHANDLER  0x01

#define UNW_FLAG_UHANDLER  0x02

#define UNW_FLAG_CHAININFO 0x04

// This structure is used to define an UNWIND_INFO that

// only has an ExceptionHandler.  There are no UnwindCodes

// declared.

typedef struct _UNWIND_INFO_EH_ONLY {

    UBYTE Version       : 3;

    UBYTE Flags         : 5;

    UBYTE SizeOfProlog;

    UBYTE CountOfCodes;

    UBYTE FrameRegister : 4;

    UBYTE FrameOffset   : 4;

    union {

       OPTIONAL ULONG ExceptionHandler;

       OPTIONAL ULONG FunctionEntry;

    };

    OPTIONAL ULONG ExceptionData[1];

} UNWIND_INFO_EH_ONLY, *PUNWIND_INFO_EH_ONLY;

/*

typedef struct _RUNTIME_FUNCTION {

    ULONG BeginAddress;

    ULONG EndAddress;

    ULONG UnwindData;

} RUNTIME_FUNCTION, *PRUNTIME_FUNCTION;

*/

typedef struct _DISPATCHER_CONTEXT {

    ULONG64 ControlPc;

    ULONG64 ImageBase;

    PRUNTIME_FUNCTION FunctionEntry;

    ULONG64 EstablisherFrame;

    ULONG64 TargetIp;

    PCONTEXT ContextRecord;

//    PEXCEPTION_ROUTINE LanguageHandler;

    char * LanguageHandler; // double dependency problem

    PVOID HandlerData;

} DISPATCHER_CONTEXT, *PDISPATCHER_CONTEXT;

/* Not needed for VS2008 compiler, comes from winnt.h. */

typedef EXCEPTION_DISPOSITION (*PEXCEPTION_ROUTINE) (

    IN PEXCEPTION_RECORD ExceptionRecord,

    IN ULONG64 EstablisherFrame,

    IN OUT PCONTEXT ContextRecord,

    IN OUT PDISPATCHER_CONTEXT DispatcherContext

);

#endif

#endif // AMD64

#endif // OS_CPU_WINDOWS_X86_VM_UNWIND_WINDOWS_X86_HPP