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GitHub Repository: PojavLauncherTeam/mobile
 Path: blob/master/src/hotspot/os_cpu/windows_aarch64/unwind_windows_aarch64.hpp
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/*

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 * Copyright (c) 2020, Microsoft Corporation. All rights reserved.

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

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 *

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

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

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 * published by the Free Software Foundation.

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 *

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 * This code is distributed in the hope that it will be useful, but WITHOUT

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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

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

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 * accompanied this code).

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 *

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

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

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

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 *

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

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

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 * questions.

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 *

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 */

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#ifndef OS_CPU_WINDOWS_AARCH64_UNWIND_WINDOWS_AARCH64_HPP

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#define OS_CPU_WINDOWS_AARCH64_UNWIND_WINDOWS_AARCH64_HPP

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typedef unsigned char UBYTE;

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#if _MSC_VER < 1700

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/* Not needed for VS2012 compiler, comes from winnt.h. */

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#define UNW_FLAG_EHANDLER  0x01

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#define UNW_FLAG_UHANDLER  0x02

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#define UNW_FLAG_CHAININFO 0x04

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#endif

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// See https://docs.microsoft.com/en-us/cpp/build/arm64-exception-handling#xdata-records

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typedef struct _UNWIND_INFO_EH_ONLY {

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    DWORD FunctionLength : 18;

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    DWORD Version        : 2;

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    DWORD X              : 1; // = 1

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    DWORD E              : 1; // = 1

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    DWORD EpilogCount    : 5; // = 0

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    DWORD CodeWords      : 5; // = 1

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    DWORD UnwindCode0    : 8;

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    DWORD UnwindCode1    : 8;

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    DWORD UnwindCode2    : 8;

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    DWORD UnwindCode3    : 8;

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    DWORD ExceptionHandler;

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} UNWIND_INFO_EH_ONLY, *PUNWIND_INFO_EH_ONLY;

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/*

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typedef struct _RUNTIME_FUNCTION {

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    DWORD BeginAddress;

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    union {

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        DWORD UnwindData;

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        struct {

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            DWORD Flag : 2;

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            DWORD FunctionLength : 11;

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            DWORD RegF : 3;

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            DWORD RegI : 4;

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            DWORD H : 1;

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            DWORD CR : 2;

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            DWORD FrameSize : 9;

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        } DUMMYSTRUCTNAME;

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    } DUMMYUNIONNAME;

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} RUNTIME_FUNCTION, *PRUNTIME_FUNCTION;

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*/

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#if _MSC_VER < 1700

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/* Not needed for VS2012 compiler, comes from winnt.h. */

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typedef struct _DISPATCHER_CONTEXT {

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    ULONG64 ControlPc;

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    ULONG64 ImageBase;

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    PRUNTIME_FUNCTION FunctionEntry;

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    ULONG64 EstablisherFrame;

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    ULONG64 TargetIp;

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    PCONTEXT ContextRecord;

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//    PEXCEPTION_ROUTINE LanguageHandler;

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    char * LanguageHandler; // double dependency problem

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    PVOID HandlerData;

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} DISPATCHER_CONTEXT, *PDISPATCHER_CONTEXT;

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#endif

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#if _MSC_VER < 1500

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

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typedef EXCEPTION_DISPOSITION (*PEXCEPTION_ROUTINE) (

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    IN PEXCEPTION_RECORD ExceptionRecord,

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    IN ULONG64 EstablisherFrame,

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    IN OUT PCONTEXT ContextRecord,

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    IN OUT PDISPATCHER_CONTEXT DispatcherContext

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);

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#endif

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#endif // OS_CPU_WINDOWS_AARCH64_UNWIND_WINDOWS_AARCH64_HPP

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