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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
//
// Definition of the Unwind API functions.
// Taken from the ABI documentation.
//
#ifndef __PAL_UNWIND_H__
#define __PAL_UNWIND_H__
#if FEATURE_PAL_SXS
#ifdef __cplusplus
extern "C"
{
#endif // __cplusplus
//
// Exception Handling ABI Level I: Base ABI
//
typedef enum
{
_URC_NO_REASON = 0,
_URC_FOREIGN_EXCEPTION_CAUGHT = 1,
_URC_FATAL_PHASE2_ERROR = 2,
_URC_FATAL_PHASE1_ERROR = 3,
_URC_NORMAL_STOP = 4,
_URC_END_OF_STACK = 5,
_URC_HANDLER_FOUND = 6,
_URC_INSTALL_CONTEXT = 7,
_URC_CONTINUE_UNWIND = 8,
} _Unwind_Reason_Code;
typedef enum
{
_UA_SEARCH_PHASE = 1,
_UA_CLEANUP_PHASE = 2,
_UA_HANDLER_FRAME = 4,
_UA_FORCE_UNWIND = 8,
} _Unwind_Action;
#define _UA_PHASE_MASK (_UA_SEARCH_PHASE|_UA_CLEANUP_PHASE)
struct _Unwind_Context;
void *_Unwind_GetIP(struct _Unwind_Context *context);
void _Unwind_SetIP(struct _Unwind_Context *context, void *new_value);
void *_Unwind_GetCFA(struct _Unwind_Context *context);
void *_Unwind_GetGR(struct _Unwind_Context *context, int index);
void _Unwind_SetGR(struct _Unwind_Context *context, int index, void *new_value);
struct _Unwind_Exception;
typedef void (*_Unwind_Exception_Cleanup_Fn)(
_Unwind_Reason_Code urc,
struct _Unwind_Exception *exception_object);
struct _Unwind_Exception
{
ULONG64 exception_class;
_Unwind_Exception_Cleanup_Fn exception_cleanup;
UINT_PTR private_1;
UINT_PTR private_2;
} __attribute__((aligned));
void _Unwind_DeleteException(struct _Unwind_Exception *exception_object);
typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn)(struct _Unwind_Context *context, void *pvParam);
_Unwind_Reason_Code _Unwind_Backtrace(_Unwind_Trace_Fn pfnTrace, void *pvParam);
_Unwind_Reason_Code _Unwind_RaiseException(struct _Unwind_Exception *exception_object);
__attribute__((noreturn)) void _Unwind_Resume(struct _Unwind_Exception *exception_object);
//
// Exception Handling ABI Level II: C++ ABI
//
void *__cxa_begin_catch(void *exceptionObject);
void __cxa_end_catch();
#ifdef __cplusplus
};
#endif // __cplusplus
#endif // FEATURE_PAL_SXS
#endif // __PAL_UNWIND_H__
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