1 /*
 2  * Copyright (c) 2004, 2019, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.
 8  *
 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  *
23  */
24 
25 #ifndef OS_CPU_WINDOWS_X86_UNWIND_WINDOWS_X86_HPP
26 #define OS_CPU_WINDOWS_X86_UNWIND_WINDOWS_X86_HPP
27 
28 
29 #ifdef AMD64
30 typedef unsigned char UBYTE;
31 
32 #if _MSC_VER < 1700
33 
34 /* Not needed for VS2012 compiler, comes from winnt.h. */
35 #define UNW_FLAG_EHANDLER  0x01
36 #define UNW_FLAG_UHANDLER  0x02
37 #define UNW_FLAG_CHAININFO 0x04
38 
39 #endif
40 
41 // This structure is used to define an UNWIND_INFO that
42 // only has an ExceptionHandler.  There are no UnwindCodes
43 // declared.
44 typedef struct _UNWIND_INFO_EH_ONLY {
45     UBYTE Version       : 3;
46     UBYTE Flags         : 5;
47     UBYTE SizeOfProlog;
48     UBYTE CountOfCodes;
49     UBYTE FrameRegister : 4;
50     UBYTE FrameOffset   : 4;
51     union {
52        OPTIONAL ULONG ExceptionHandler;
53        OPTIONAL ULONG FunctionEntry;
54     };
55     OPTIONAL ULONG ExceptionData[1];
56 } UNWIND_INFO_EH_ONLY, *PUNWIND_INFO_EH_ONLY;
57 
58 
59 /*
60 typedef struct _RUNTIME_FUNCTION {
61     ULONG BeginAddress;
62     ULONG EndAddress;
63     ULONG UnwindData;
64 } RUNTIME_FUNCTION, *PRUNTIME_FUNCTION;
65 */
66 
67 #if _MSC_VER < 1700
68 
69 /* Not needed for VS2012 compiler, comes from winnt.h. */
70 typedef struct _DISPATCHER_CONTEXT {
71     ULONG64 ControlPc;
72     ULONG64 ImageBase;
73     PRUNTIME_FUNCTION FunctionEntry;
74     ULONG64 EstablisherFrame;
75     ULONG64 TargetIp;
76     PCONTEXT ContextRecord;
77 //    PEXCEPTION_ROUTINE LanguageHandler;
78     char * LanguageHandler; // double dependency problem
79     PVOID HandlerData;
80 } DISPATCHER_CONTEXT, *PDISPATCHER_CONTEXT;
81 
82 #endif
83 
84 #if _MSC_VER < 1500
85 
86 /* Not needed for VS2008 compiler, comes from winnt.h. */
87 typedef EXCEPTION_DISPOSITION (*PEXCEPTION_ROUTINE) (
88     IN PEXCEPTION_RECORD ExceptionRecord,
89     IN ULONG64 EstablisherFrame,
90     IN OUT PCONTEXT ContextRecord,
91     IN OUT PDISPATCHER_CONTEXT DispatcherContext
92 );
93 
94 #endif
95 
96 #endif // AMD64
97 
98 #endif // OS_CPU_WINDOWS_X86_UNWIND_WINDOWS_X86_HPP