875 lines
29 KiB
C
875 lines
29 KiB
C
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/***
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*ehdata.h -
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*
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* Copyright (c) 1993-1995, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Declare misc. types, macros, etc. for implementation
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* of C++ Exception Handling for the run-time and the compiler.
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* Hardware independent, assumes Windows NT.
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*
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* Portions of this header file can be disabled by defining the following
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* macros:
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* _EHDATA_NOHEADERS - suppresses inclusion of standard header files
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* If this is specified, then appropriate typedefs or macros must
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* be provided by some other means.
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* _EHDATA_NOTHROW - suppresses definitions used only to describe a throw
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* _EHDATA_NOFUNCINFO - suppresses definitions for the frame descriptor
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* _EHDATA_NONT - suppresses definitions of our version of NT's stuff
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*
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* Other conditional compilation macros:
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* CC_EXPLICITFRAME - if true, representation of registration node includes
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* the value of the frame-pointer for that frame, making the location
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* of the registration node on the frame flexible. This is intended
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* primarily for early testing.
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*
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* [Internal]
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*
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*Revision History:
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* 05-20-93 BS Module Created.
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* 03-01-94 CFW Remove CONTEXT def for x86 for TiborL.
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* 03-03-94 TL Mips (_M_MRX000 >= 4000) changes
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* 09-02-94 SKS This header file added.
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* 09-12-94 GJF Merged in changes from/for DEC (Al Doser, dated 6/20,
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* and Bill Baxter, dated 6/28).
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* 11-06-94 GJF Changed pack pragma to 8 byte alignment.
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* 02-14-95 CFW Clean up Mac merge.
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* 03-22-95 PML Add const for read-only structs
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* 03-29-95 CFW Add error message to internal headers.
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* 04-14-95 JWM Added EH_ABORT_FRAME_UNWIND_PART for EH/SEH exception handling.
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* 04-20-95 TGL Added iFrameNestLevel field to MIPS FuncInfo
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* 04-27-95 JWM EH_ABORT_FRAME_UNWIND_PART now #ifdef ALLOW_UNWIND_ABORT.
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* 06-08-95 JWM Merged CRT version of ehdata.h into langapi source.
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*
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****/
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#ifndef _INC_EHDATA
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#define _INC_EHDATA
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#if _M_IX86 >= 300 /*IFSTRIP=IGN*/
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# ifndef CC_EXPLICITFRAME
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# define CC_EXPLICITFRAME 0 // If non-zero, we're using a hack version of the
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// registration node.
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# endif
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#endif
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#ifndef _EHDATA_NOHEADERS
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#include <stddef.h>
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#include <excpt.h>
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#if defined(_WIN32)
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#include <windows.h>
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#else
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#include <nowin.h>
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#endif
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#endif /* _EHDATA_NOHEADERS */
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#pragma pack(push, ehdata, 4)
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#define EH_EXCEPTION_NUMBER ('msc' | 0xE0000000) // The NT Exception # that we use
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#define EH_MAGIC_NUMBER1 0x19930520 // The magic # identifying this version
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// As magic numbers increase, we have to keep track of
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// the versions that we are backwards compatible with.
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#define EH_EXCEPTION_PARAMETERS 3 // Number of parameters in exception record
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#ifdef ALLOW_UNWIND_ABORT
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#define EH_ABORT_FRAME_UNWIND_PART EH_EXCEPTION_NUMBER+1
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#endif
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//
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// PMD - Pointer to Member Data: generalized pointer-to-member descriptor
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//
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typedef struct PMD
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{
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ptrdiff_t mdisp; // Offset of intended data within base
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ptrdiff_t pdisp; // Displacement to virtual base pointer
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ptrdiff_t vdisp; // Index within vbTable to offset of base
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} PMD;
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//
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// PMFN - Pointer to Member Function
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// M00REVIEW: we may need something more than this, but this will do for now.
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//
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typedef void (*PMFN)(void);
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//
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// TypeDescriptor - per-type record which uniquely identifies the type.
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//
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// Each type has a decorated name which uniquely identifies it, and a hash
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// value which is computed by the compiler. The hash function used is not
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// important; the only thing which is essential is that it be the same for
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// all time.
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//
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// The special type '...' (ellipsis) is represented by a null name.
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//
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#pragma warning(disable:4200) // get rid of obnoxious nonstandard extension warning
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typedef struct TypeDescriptor
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{
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#if _RTTI
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const void * pVFTable; // Field overloaded by RTTI
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#else
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DWORD hash; // Hash value computed from type's decorated name
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#endif
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void * spare; // reserved, possible for RTTI
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char name[]; // The decorated name of the type; 0 terminated.
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} TypeDescriptor;
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#pragma warning(default:4200)
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#define TD_HASH(td) ((td).hash)
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#define TD_NAME(td) ((td).name)
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#define TD_IS_TYPE_ELLIPSIS(td) ((td == NULL) || (TD_NAME(*td)[0] == '\0'))
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#ifndef _EHDATA_NOTHROW
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/////////////////////////////////////////////////////////////////////////////
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//
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// Description of the thrown object. (M00REVIEW: not final)
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//
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// This information is broken down into three levels, to allow for maximum
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// comdat folding (at the cost of some extra pointers).
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//
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// ThrowInfo is the head of the description, and contains information about
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// the particular variant thrown.
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// CatchableTypeArray is an array of pointers to type descriptors. It will
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// be shared between objects thrown by reference but with varying
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// qualifiers.
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// CatchableType is the description of an individual type, and how to effect
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// the conversion from a given type.
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//
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//---------------------------------------------------------------------------
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//
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// CatchableType - description of a type that can be caught.
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//
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// Note: although isSimpleType can be part of ThrowInfo, it is more
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// convenient for the run-time to have it here.
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//
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typedef const struct _s_CatchableType {
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unsigned int properties; // Catchable Type properties (Bit field)
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TypeDescriptor *pType; // Pointer to the type descriptor for this type
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PMD thisDisplacement; // Pointer to instance of catch type within
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// thrown object.
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int sizeOrOffset; // Size of simple-type object or offset into
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// buffer of 'this' pointer for catch object
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PMFN copyFunction; // Copy constructor or CC-closure
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} CatchableType;
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#define CT_IsSimpleType 0x00000001 // type is a simple type
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#define CT_ByReferenceOnly 0x00000002 // type must be caught by reference
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#define CT_HasVirtualBase 0x00000004 // type is a class with virtual bases
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#define CT_PROPERTIES(ct) ((ct).properties)
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#define CT_PTD(ct) ((ct).pType)
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#define CT_THISDISP(ct) ((ct).thisDisplacement)
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#define CT_SIZE(ct) ((ct).sizeOrOffset)
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#define CT_COPYFUNC(ct) ((ct).copyFunction)
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#define CT_OFFSET(ct) ((ct).sizeOrOffset)
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#define CT_HASH(ct) (TD_HASH(*CT_PTD(ct)))
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#define CT_NAME(ct) (TD_NAME(*CT_PTD(ct)))
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#define SET_CT_ISSIMPLETYPE(ct) (CT_PROPERTIES(ct) |= CT_IsSimpleType)
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#define SET_CT_BYREFONLY(ct) (CT_PROPERTIES(ct) |= CT_ByReferenceOnly)
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#define SET_CT_HASVB(ct) (CT_PROPERTIES(ct) |= CT_HasVirtualBase)
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#define CT_ISSIMPLETYPE(ct) (CT_PROPERTIES(ct) & CT_IsSimpleType) // Is it a simple type?
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#define CT_BYREFONLY(ct) (CT_PROPERTIES(ct) & CT_ByReferenceOnly) // Must it be caught by reference?
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#define CT_HASVB(ct) (CT_PROPERTIES(ct) & CT_HasVirtualBase) // Is this type a class with virtual bases?
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//
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// CatchableTypeArray - array of pointers to catchable types, with length
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//
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#pragma warning(disable:4200) // get rid of obnoxious nonstandard extension warning
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typedef const struct _s_CatchableTypeArray {
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int nCatchableTypes;
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CatchableType *arrayOfCatchableTypes[];
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} CatchableTypeArray;
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#pragma warning(default:4200)
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//
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// ThrowInfo - information describing the thrown object, staticly built
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// at the throw site.
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//
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// pExceptionObject (the dynamic part of the throw; see below) is always a
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// reference, whether or not it is logically one. If 'isSimpleType' is true,
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// it is a reference to the simple type, which is 'size' bytes long. If
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// 'isReference' and 'isSimpleType' are both false, then it's a UDT or
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// a pointer to any type (ie pExceptionObject points to a pointer). If it's
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// a pointer, copyFunction is NULL, otherwise it is a pointer to a copy
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// constructor or copy constructor closure.
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//
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// The pForwardCompat function pointer is intended to be filled in by future
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// versions, so that if say a DLL built with a newer version (say C10) throws,
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// and a C9 frame attempts a catch, the frame handler attempting the catch (C9)
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// can let the version that knows all the latest stuff do the work.
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//
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typedef const struct _s_ThrowInfo {
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unsigned int attributes; // Throw Info attributes (Bit field)
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PMFN pmfnUnwind; // Destructor to call when exception
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// has been handled or aborted.
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int (__cdecl*pForwardCompat)(...); // Forward compatibility frame handler
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CatchableTypeArray *pCatchableTypeArray; // Pointer to list of pointers to types.
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} ThrowInfo;
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#define TI_IsConst 0x00000001 // thrown object has const qualifier
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#define TI_IsVolatile 0x00000002 // thrown object has volatile qualifier
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#define TI_IsUnaligned 0x00000004 // thrown object has unaligned qualifier
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#define THROW_ATTRS(t) ((t).attributes)
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#define THROW_UNWINDFUNC(t) ((t).pmfnUnwind)
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#define THROW_FORWARDCOMPAT(t) ((t).pForwardCompat)
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#define THROW_COUNT(t) ((t).pCatchableTypeArray->nCatchableTypes)
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#define THROW_CTLIST(t) ((t).pCatchableTypeArray->arrayOfCatchableTypes)
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#define THROW_PCTLIST(t) (&THROW_CTLIST(t))
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#define THROW_CT(t, n) (*THROW_CTLIST(t)[n])
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#define THROW_PCT(t, n) (THROW_CTLIST(t)[n])
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#define SET_TI_ISCONST(t) (THROW_ATTRS(t) |= TI_IsConst) // Is the object thrown 'const' qualified
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#define SET_TI_ISVOLATILE(t) (THROW_ATTRS(t) |= TI_IsVolatile) // Is the object thrown 'volatile' qualified
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#define SET_TI_ISUNALIGNED(t) (THROW_ATTRS(t) |= TI_IsUnaligned) // Is the object thrown 'unaligned' qualified
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#define THROW_ISCONST(t) (THROW_ATTRS(t) & TI_IsConst)
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#define THROW_ISVOLATILE(t) (THROW_ATTRS(t) & TI_IsVolatile)
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#define THROW_ISUNALIGNED(t) (THROW_ATTRS(t) & TI_IsUnaligned)
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//
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// Here's how to throw:
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// M00HACK: _ThrowInfo is the name of the type that is 'pre-injected' into the
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// compiler; since this prototype is known to the FE along with the pre-injected
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// types, it has to match exactly.
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//
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#if _MSC_VER >= 900 /*IFSTRIP=IGN*/
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extern "C" void __stdcall _CxxThrowException(void* pExceptionObject, _ThrowInfo* pThrowInfo);
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#else
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// If we're not self-building, we need to use the name that we defined above.
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extern "C" void __stdcall _CxxThrowException(void* pExceptionObject, ThrowInfo* pThrowInfo);
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#endif
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#endif /* _EHDATA_NOTHROW */
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#ifndef _EHDATA_NOFUNCINFO
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/////////////////////////////////////////////////////////////////////////////
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//
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// Describing 'try/catch' blocks:
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//
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//---------------------------------------------------------------------------
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//
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// Current state of a function.
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// -1 is the 'blank' state, ie there is nothing to unwind, no try blocks active.
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//
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typedef int __ehstate_t; // The type of a state index
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#define EH_EMPTY_STATE -1
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//
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// HandlerType - description of a single 'catch'
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//
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typedef const struct _s_HandlerType {
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unsigned int adjectives; // Handler Type adjectives (bitfield)
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TypeDescriptor *pType; // Pointer to the corresponding type descriptor
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ptrdiff_t dispCatchObj; // Displacement of catch object from base
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// of current stack frame.
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#if _M_MRX000 >= 4000 /*IFSTRIP=IGN*/
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ULONG frameNestLevel; // The static nesting level of parent function
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#endif
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void * addressOfHandler; // Address of 'catch' code
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} HandlerType;
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#define HT_IsConst 0x00000001 // type referenced is 'const' qualified
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#define HT_IsVolatile 0x00000002 // type referenced is 'volatile' qualified
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#define HT_IsUnaligned 0x00000004 // type referenced is 'unaligned' qualified
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#define HT_IsReference 0x00000008 // catch type is by reference
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#define HT_IsResumable 0x00000010 // the catch may choose to resume (Reserved)
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#define HT_ADJECTIVES(ht) ((ht).adjectives)
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#define HT_PTD(ht) ((ht).pType)
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#define HT_DISPCATCH(ht) ((ht).dispCatchObj)
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#if _M_MRX000 >= 4000 /*IFSTRIP=IGN*/
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#define HT_FRAMENEST(ht) ((ht).frameNestLevel)
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#endif
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#define HT_HANDLER(ht) ((ht).addressOfHandler)
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#define HT_NAME(ht) (TD_NAME(*HT_PTD(ht)))
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#define HT_HASH(ht) (TD_HASH(*HT_PTD(ht)))
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#define HT_IS_TYPE_ELLIPSIS(ht) TD_IS_TYPE_ELLIPSIS(HT_PTD(ht))
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#define SET_HT_ISCONST(ht) (HT_ADJECTIVES(ht) |= HT_IsConst)
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#define SET_HT_ISVOLATILE(ht) (HT_ADJECTIVES(ht) |= HT_IsVolatile)
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#define SET_HT_ISUNALIGNED(ht) (HT_ADJECTIVES(ht) |= HT_IsUnaligned)
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#define SET_HT_ISREFERENCE(ht) (HT_ADJECTIVES(ht) |= HT_IsReference)
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#define SET_HT_ISRESUMABLE(ht) (HT_ADJECTIVES(ht) |= HT_IsResumable)
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#define HT_ISCONST(ht) (HT_ADJECTIVES(ht) & HT_IsConst) // Is the type referenced 'const' qualified
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#define HT_ISVOLATILE(ht) (HT_ADJECTIVES(ht) & HT_IsVolatile) // Is the type referenced 'volatile' qualified
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#define HT_ISUNALIGNED(ht) (HT_ADJECTIVES(ht) & HT_IsUnaligned) // Is the type referenced 'unaligned' qualified
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#define HT_ISREFERENCE(ht) (HT_ADJECTIVES(ht) & HT_IsReference) // Is the catch type by reference
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#define HT_ISRESUMABLE(ht) (HT_ADJECTIVES(ht) & HT_IsResumable) // Might the catch choose to resume (Reserved)
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//
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// HandlerMapEntry - associates a handler list (sequence of catches) with a
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// range of eh-states.
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//
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typedef const struct _s_TryBlockMapEntry {
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__ehstate_t tryLow; // Lowest state index of try
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__ehstate_t tryHigh; // Highest state index of try
|
||
|
|
#if !defined(_M_ALPHA) && !defined(_M_IA64)
|
||
|
|
__ehstate_t catchHigh; // Highest state index of any associated catch
|
||
|
|
#endif
|
||
|
|
int nCatches; // Number of entries in array
|
||
|
|
HandlerType *pHandlerArray; // List of handlers for this try
|
||
|
|
} TryBlockMapEntry;
|
||
|
|
|
||
|
|
#define TBME_LOW(hm) ((hm).tryLow)
|
||
|
|
#define TBME_HIGH(hm) ((hm).tryHigh)
|
||
|
|
#if !defined(_M_IA64)
|
||
|
|
#define TBME_CATCHHIGH(hm) ((hm).catchHigh)
|
||
|
|
#endif // !defined(_M_IA64)
|
||
|
|
#define TBME_NCATCHES(hm) ((hm).nCatches)
|
||
|
|
#define TBME_PLIST(hm) ((hm).pHandlerArray)
|
||
|
|
#define TBME_CATCH(hm, n) (TBME_PLIST(hm)[n])
|
||
|
|
#define TBME_PCATCH(hm, n) (&(TBME_PLIST(hm)[n]))
|
||
|
|
|
||
|
|
|
||
|
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// Description of the function:
|
||
|
|
//
|
||
|
|
//---------------------------------------------------------------------------
|
||
|
|
|
||
|
|
//
|
||
|
|
// UnwindMapEntry - Description of each state transition for unwinding
|
||
|
|
// the stack (ie destructing objects).
|
||
|
|
//
|
||
|
|
// The unwind map is an array, indexed by current state. Each entry specifies
|
||
|
|
// the state to go to during unwind, and the action required to get there.
|
||
|
|
// Note that states are represented by a signed integer, and that the 'blank'
|
||
|
|
// state is -1 so that the array remains 0-based (because by definition there
|
||
|
|
// is never any unwind action to be performed from state -1). It is also
|
||
|
|
// assumed that state indices will be dense, ie that there will be no gaps of
|
||
|
|
// unused state indices in a function.
|
||
|
|
//
|
||
|
|
|
||
|
|
typedef const struct _s_UnwindMapEntry {
|
||
|
|
__ehstate_t toState; // State this action takes us to
|
||
|
|
void (*action)(void); // Funclet to call to effect state change
|
||
|
|
} UnwindMapEntry;
|
||
|
|
|
||
|
|
#define UWE_TOSTATE(uwe) ((uwe).toState)
|
||
|
|
#define UWE_ACTION(uwe) ((uwe).action)
|
||
|
|
|
||
|
|
#if _M_MRX000 >= 4000 || defined(_M_MPPC) || defined(_M_PPC) /*IFSTRIP=IGN*/
|
||
|
|
typedef struct IptoStateMapEntry {
|
||
|
|
ULONG Ip;
|
||
|
|
__ehstate_t State;
|
||
|
|
} IptoStateMapEntry;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
//
|
||
|
|
// FuncInfo - all the information that describes a function with exception
|
||
|
|
// handling information.
|
||
|
|
//
|
||
|
|
|
||
|
|
typedef const struct _s_FuncInfo
|
||
|
|
{
|
||
|
|
unsigned int magicNumber; // Identifies version of compiler
|
||
|
|
__ehstate_t maxState; // Highest state number plus one (thus
|
||
|
|
// number of entries in unwind map)
|
||
|
|
UnwindMapEntry *pUnwindMap; // Where the unwind map is
|
||
|
|
unsigned int nTryBlocks; // Number of 'try' blocks in this function
|
||
|
|
TryBlockMapEntry *pTryBlockMap; // Where the handler map is
|
||
|
|
#if defined(_M_ALPHA)
|
||
|
|
signed int EHContextDelta; // Frame offset of EHContext record
|
||
|
|
#endif
|
||
|
|
unsigned int nIPMapEntries; // # entries in the IP-to-state map. NYI (reserved)
|
||
|
|
#if _M_MRX000 >= 4000 /*IFSTRIP=IGN*/
|
||
|
|
IptoStateMapEntry *pIPtoStateMap; // An IP to state map..
|
||
|
|
ptrdiff_t dispUnwindHelp; // Displacement of unwind helpers from base
|
||
|
|
int iTryBlockIndex; // Used by catch functions only
|
||
|
|
int iFrameNestLevel; // The static nesting level of parent function
|
||
|
|
#elif defined(_M_MPPC) || defined(_M_PPC)
|
||
|
|
IptoStateMapEntry *pIPtoStateMap; // An IP to state map..
|
||
|
|
#else
|
||
|
|
void *pIPtoStateMap; // An IP to state map. NYI (reserved).
|
||
|
|
#endif
|
||
|
|
} FuncInfo;
|
||
|
|
|
||
|
|
#define FUNC_MAGICNUM(fi) ((fi).magicNumber)
|
||
|
|
#define FUNC_MAXSTATE(fi) ((fi).maxState)
|
||
|
|
#define FUNC_NTRYBLOCKS(fi) ((fi).nTryBlocks)
|
||
|
|
#define FUNC_NIPMAPENT(fi) ((fi).nIPMapEntries)
|
||
|
|
#define FUNC_PUNWINDMAP(fi) ((fi).pUnwindMap)
|
||
|
|
#define FUNC_PHANDLERMAP(fi) ((fi).pTryBlockMap)
|
||
|
|
#if defined(_M_ALPHA)
|
||
|
|
#define FUNC_EHCONTEXTDELTA(fi) ((fi).EHContextDelta)
|
||
|
|
#endif
|
||
|
|
#define FUNC_IPMAP(fi) ((fi).pIPtoStateMap)
|
||
|
|
#define FUNC_UNWIND(fi, st) ((fi).pUnwindMap[st])
|
||
|
|
#define FUNC_PUNWIND(fi, st) (&FUNC_UNWIND(fi, st))
|
||
|
|
#define FUNC_TRYBLOCK(fi,n) ((fi).pTryBlockMap[n])
|
||
|
|
#define FUNC_PTRYBLOCK(fi,n) (&FUNC_TRYBLOCK(fi, n))
|
||
|
|
#if _M_MRX000 >= 4000 /*IFSTRIP=IGN*/
|
||
|
|
#define FUNC_IPTOSTATE(fi,n) ((fi).pIPtoStateMap[n])
|
||
|
|
#define FUNC_PIPTOSTATE(fi,n) (&FUNC_IPTOSTATE(fi,n))
|
||
|
|
#define FUNC_DISPUNWINDHELP(fi) ((fi).dispUnwindHelp)
|
||
|
|
#define FUNC_TRYBLOCKINDEX(fi) ((fi).iTryBlockIndex)
|
||
|
|
#define FUNC_FRAMENEST(fi) ((fi).iFrameNestLevel)
|
||
|
|
#elif defined(_M_MPPC) || defined(_M_PPC)
|
||
|
|
#define FUNC_IPTOSTATE(fi,n) ((fi).pIPtoStateMap[n])
|
||
|
|
#define FUNC_PIPTOSTATE(fi,n) (&FUNC_IPTOSTATE(fi,n))
|
||
|
|
#elif defined(_M_IA64)
|
||
|
|
#define FUNC_UNWIND(fi, st) ((fi).pUnwindMap[st])
|
||
|
|
#define FUNC_PUNWIND(fi, st) (&FUNC_UNWIND(fi, st))
|
||
|
|
#define FUNC_TRYBLOCK(fi,n) ((fi).pTryBlockMap[n])
|
||
|
|
#define FUNC_PTRYBLOCK(fi,n) (&FUNC_TRYBLOCK(fi, n))
|
||
|
|
#else
|
||
|
|
#define FUNC_IPTOSTATE(fi,n) __ERROR_NYI__
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* _EHDATA_NOFUNCINFO */
|
||
|
|
|
||
|
|
#ifndef _EHDATA_NONT
|
||
|
|
|
||
|
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// Data types that are variants of data used by NT (and Chicago) to manage
|
||
|
|
// exception handling.
|
||
|
|
//
|
||
|
|
//---------------------------------------------------------------------------
|
||
|
|
|
||
|
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// A stack registration node (i386 only)
|
||
|
|
//
|
||
|
|
|
||
|
|
#if _M_IX86 >= 300 /*IFSTRIP=IGN*/
|
||
|
|
struct EHRegistrationNode {
|
||
|
|
/* void * stackPtr */ // Stack ptr at entry to try (below address point)
|
||
|
|
EHRegistrationNode *pNext; // Next node in the chain
|
||
|
|
void * frameHandler; // The handler function for this frame
|
||
|
|
__ehstate_t state; // The current state of this function
|
||
|
|
#if CC_EXPLICITFRAME
|
||
|
|
void * frame; // Value of ebp for this frame
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
#if !CC_EXPLICITFRAME
|
||
|
|
// Cannonical offset
|
||
|
|
# define FRAME_OFFSET sizeof(EHRegistrationNode)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define PRN_NEXT(prn) ((prn)->pNext)
|
||
|
|
#define PRN_HANDLER(prn) ((prn)->frameHandler)
|
||
|
|
#define PRN_STATE(prn) ((prn)->state)
|
||
|
|
#define PRN_STACK(prn) (((void**)(prn))[-1])
|
||
|
|
#if CC_EXPLICITFRAME
|
||
|
|
# define PRN_FRAME(prn) ((prn)->frame)
|
||
|
|
#else
|
||
|
|
# define PRN_FRAME(prn) ((void*)(((char*)prn) + FRAME_OFFSET))
|
||
|
|
#endif
|
||
|
|
|
||
|
|
typedef void DispatcherContext; // Meaningless on Intel
|
||
|
|
|
||
|
|
#elif _M_MRX000 >= 4000 /*IFSTRIP=IGN*/
|
||
|
|
//
|
||
|
|
// On MIPS we don't have a registration node, just a pointer to the stack frame base
|
||
|
|
//
|
||
|
|
typedef ULONG EHRegistrationNode;
|
||
|
|
|
||
|
|
#define PRN_NEXT(prn) __ERROR__
|
||
|
|
#define PRN_HANDLER(prn) __ERROR__
|
||
|
|
#define PRN_STATE(prn) __ERROR__
|
||
|
|
#define PRN_STACK(prn) __ERROR__
|
||
|
|
#define PRN_FRAME(prn) __ERROR__
|
||
|
|
|
||
|
|
#define FRAME_OFFSET 0
|
||
|
|
#if !defined(_NTSUBSET_)
|
||
|
|
typedef struct _RUNTIME_FUNCTION {
|
||
|
|
ULONG BeginAddress;
|
||
|
|
ULONG EndAddress;
|
||
|
|
EXCEPTION_DISPOSITION (*ExceptionHandler)();
|
||
|
|
PVOID HandlerData;
|
||
|
|
ULONG PrologEndAddress;
|
||
|
|
} RUNTIME_FUNCTION, *PRUNTIME_FUNCTION;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
typedef struct _xDISPATCHER_CONTEXT {
|
||
|
|
ULONG ControlPc;
|
||
|
|
PRUNTIME_FUNCTION FunctionEntry;
|
||
|
|
ULONG EstablisherFrame;
|
||
|
|
PCONTEXT ContextRecord;
|
||
|
|
} DispatcherContext; // changed the case of the name to conform to EH conventions
|
||
|
|
|
||
|
|
#elif defined(_M_ALPHA)
|
||
|
|
//
|
||
|
|
// On Alpha we don't have a registration node,
|
||
|
|
// just a pointer to the stack frame base
|
||
|
|
//
|
||
|
|
typedef ULONG EHRegistrationNode;
|
||
|
|
|
||
|
|
#define PRN_NEXT(prn) __ERROR__
|
||
|
|
#define PRN_HANDLER(prn) __ERROR__
|
||
|
|
#define PRN_STATE(prn) __ERROR__
|
||
|
|
#define PRN_STACK(prn) __ERROR__
|
||
|
|
#define PRN_FRAME(prn) __ERROR__
|
||
|
|
|
||
|
|
#define FRAME_OFFSET 0
|
||
|
|
#if !defined(_NTSUBSET_)
|
||
|
|
typedef struct _RUNTIME_FUNCTION {
|
||
|
|
ULONG BeginAddress;
|
||
|
|
ULONG EndAddress;
|
||
|
|
EXCEPTION_DISPOSITION (*ExceptionHandler)();
|
||
|
|
PVOID HandlerData; // ptr to FuncInfo record
|
||
|
|
ULONG PrologEndAddress;
|
||
|
|
} RUNTIME_FUNCTION, *PRUNTIME_FUNCTION;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
typedef struct _xDISPATCHER_CONTEXT {
|
||
|
|
ULONG ControlPc;
|
||
|
|
PRUNTIME_FUNCTION FunctionEntry;
|
||
|
|
ULONG EstablisherFrame; // Virtual Frame Pointer
|
||
|
|
PCONTEXT ContextRecord;
|
||
|
|
} DispatcherContext; // changed the case of the name to conform to EH conventions
|
||
|
|
|
||
|
|
//
|
||
|
|
// _EHCONTEXT is a struct built in the frame by the compiler.
|
||
|
|
// On entry to a function, compiler generated code stores the
|
||
|
|
// address of the base of the fixed frame area (the so-called
|
||
|
|
// Real Frame Pointer) into the Rfp. On every state transition,
|
||
|
|
// compiler generated code stores the current state index into
|
||
|
|
// the State field.
|
||
|
|
//
|
||
|
|
// The FuncInfo record for the function contains the offset of
|
||
|
|
// the _EHCONTEXT record from the Virtual Frame Pointer - a
|
||
|
|
// pointer to the highest address of the frame so this offset
|
||
|
|
// is negative (frames grow down in the address space).
|
||
|
|
//
|
||
|
|
typedef struct _EHCONTEXT {
|
||
|
|
ULONG State;
|
||
|
|
PVOID Rfp;
|
||
|
|
} EHContext;
|
||
|
|
|
||
|
|
#define VIRTUAL_FP(pDC) (pDC->EstablisherFrame)
|
||
|
|
|
||
|
|
#define REAL_FP(VirtualFP, pFuncInfo) \
|
||
|
|
(((EHContext *)((char *)VirtualFP \
|
||
|
|
+ pFuncInfo->EHContextDelta)) -> Rfp)
|
||
|
|
|
||
|
|
#define EH_STATE(VirtualFP, pFuncInfo) \
|
||
|
|
(((EHContext *)((char *)VirtualFP \
|
||
|
|
+ pFuncInfo->EHContextDelta)) -> State)
|
||
|
|
|
||
|
|
#elif defined(_M_M68K)
|
||
|
|
struct EHRegistrationNode {
|
||
|
|
/* void * _sp; // The stack pointer for the entry of try/catch */
|
||
|
|
void * frameHandler; // The handler function for this frame
|
||
|
|
__ehstate_t state; // The current state of this function
|
||
|
|
};
|
||
|
|
|
||
|
|
#define PRN_HANDLER(prn) ((prn)->frameHandler)
|
||
|
|
#define PRN_STATE(prn) ((prn)->state)
|
||
|
|
|
||
|
|
typedef void DispatcherContext; // Meaningless on Mac
|
||
|
|
|
||
|
|
|
||
|
|
#elif defined(_M_PPC) || defined(_M_MPPC)
|
||
|
|
//
|
||
|
|
// On PowerPC we don't have a registration node, just a pointer to the stack
|
||
|
|
// frame base
|
||
|
|
//
|
||
|
|
typedef ULONG EHRegistrationNode;
|
||
|
|
|
||
|
|
#define PRN_NEXT(prn) __ERROR__
|
||
|
|
#define PRN_HANDLER(prn) __ERROR__
|
||
|
|
#define PRN_STATE(prn) __ERROR__
|
||
|
|
#define PRN_STACK(prn) __ERROR__
|
||
|
|
#define PRN_FRAME(prn) __ERROR__
|
||
|
|
|
||
|
|
#define FRAME_OFFSET 0
|
||
|
|
|
||
|
|
#if !defined(_NTSUBSET_)
|
||
|
|
typedef struct _RUNTIME_FUNCTION {
|
||
|
|
ULONG BeginAddress;
|
||
|
|
ULONG EndAddress;
|
||
|
|
EXCEPTION_DISPOSITION (*ExceptionHandler)(...);
|
||
|
|
PVOID HandlerData;
|
||
|
|
ULONG PrologEndAddress;
|
||
|
|
} RUNTIME_FUNCTION, *PRUNTIME_FUNCTION;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
typedef struct _xDISPATCHER_CONTEXT {
|
||
|
|
ULONG ControlPc;
|
||
|
|
PRUNTIME_FUNCTION FunctionEntry;
|
||
|
|
ULONG EstablisherFrame;
|
||
|
|
PCONTEXT ContextRecord;
|
||
|
|
} DispatcherContext;
|
||
|
|
// changed the case of the name to conform to EH conventions
|
||
|
|
|
||
|
|
#if defined(_M_MPPC)
|
||
|
|
typedef struct _ftinfo {
|
||
|
|
ULONG dwMagicNumber; // magic number
|
||
|
|
void *pFrameInfo; // pointer to runtime frame info
|
||
|
|
PRUNTIME_FUNCTION rgFuncTable; // function table
|
||
|
|
ULONG cFuncTable; // number of function entry
|
||
|
|
ULONG dwEntryCF; // address of starting of the code fragment
|
||
|
|
ULONG dwSizeCF; // size of the code fragment
|
||
|
|
} FTINFO, *PFTINFO;
|
||
|
|
|
||
|
|
#define offsFTINFO 64
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#elif defined(_M_IA64)
|
||
|
|
|
||
|
|
#if !defined(_NTSUBSET_)
|
||
|
|
|
||
|
|
struct _CONTEXT;
|
||
|
|
struct _EXCEPTION_RECORD;
|
||
|
|
typedef __int64 ULONGLONG;
|
||
|
|
|
||
|
|
typedef
|
||
|
|
EXCEPTION_DISPOSITION
|
||
|
|
(*PEXCEPTION_ROUTINE) (
|
||
|
|
IN struct _EXCEPTION_RECORD *ExceptionRecord,
|
||
|
|
IN PVOID EstablisherFrame,
|
||
|
|
IN OUT struct _CONTEXT *ContextRecord,
|
||
|
|
IN OUT PVOID DispatcherContext
|
||
|
|
);
|
||
|
|
|
||
|
|
typedef struct _UNWIND_INFO {
|
||
|
|
USHORT Version; // Version Number
|
||
|
|
USHORT Flags; // Flags
|
||
|
|
ULONG DataLength; // Length of Descriptor Data
|
||
|
|
PVOID Descriptors; // Unwind Descriptors
|
||
|
|
} UNWIND_INFO, *PUNWIND_INFO;
|
||
|
|
|
||
|
|
typedef union _FRAME_POINTERS {
|
||
|
|
struct {
|
||
|
|
ULONG MemoryStackFp;
|
||
|
|
ULONG BackingStoreFp;
|
||
|
|
};
|
||
|
|
ULONGLONG FramePointers; // used to force 8-byte alignment
|
||
|
|
} FRAME_POINTERS, *PFRAME_POINTERS;
|
||
|
|
|
||
|
|
typedef struct _RUNTIME_FUNCTION {
|
||
|
|
ULONG BeginAddress;
|
||
|
|
ULONG EndAddress;
|
||
|
|
PEXCEPTION_ROUTINE ExceptionHandler;
|
||
|
|
PVOID HandlerData;
|
||
|
|
PUNWIND_INFO UnwindData;
|
||
|
|
} RUNTIME_FUNCTION, *PRUNTIME_FUNCTION;
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
//
|
||
|
|
// On IA64 we don't have a registration node, just a pointer to the stack
|
||
|
|
// frame base and backing store base.
|
||
|
|
//
|
||
|
|
typedef FRAME_POINTERS EHRegistrationNode;
|
||
|
|
|
||
|
|
#define PRN_NEXT(prn) __ERROR__
|
||
|
|
#define PRN_HANDLER(prn) __ERROR__
|
||
|
|
#define PRN_STATE(prn) __ERROR__
|
||
|
|
#define PRN_STACK(prn) __ERROR__
|
||
|
|
#define PRN_FRAME(prn) __ERROR__
|
||
|
|
|
||
|
|
typedef struct _xDISPATCHER_CONTEXT {
|
||
|
|
FRAME_POINTERS EstablisherFrame;
|
||
|
|
ULONG ControlPc;
|
||
|
|
struct _RUNTIME_FUNCTION *FunctionEntry;
|
||
|
|
PCONTEXT ContextRecord;
|
||
|
|
} DispatcherContext, *pDispatcherContext;
|
||
|
|
|
||
|
|
typedef struct _EHContext {
|
||
|
|
PVOID Psp;
|
||
|
|
LONG State;
|
||
|
|
} EHContext;
|
||
|
|
|
||
|
|
#define EH_STATE_OFFSET -12
|
||
|
|
|
||
|
|
#define EH_STATE(pRN) \
|
||
|
|
(*(int*)(pRN->MemoryStackFp + EH_STATE_OFFSET))
|
||
|
|
|
||
|
|
#else
|
||
|
|
#error "Machine not supported"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// The NT Exception record that we use to pass information from the throw to
|
||
|
|
// the possible catches.
|
||
|
|
//
|
||
|
|
// The constants in the comments are the values we expect.
|
||
|
|
// This is based on the definition of EXCEPTION_RECORD in winnt.h.
|
||
|
|
//
|
||
|
|
|
||
|
|
typedef struct EHExceptionRecord {
|
||
|
|
DWORD ExceptionCode; // The code of this exception. (= EH_EXCEPTION_NUMBER)
|
||
|
|
DWORD ExceptionFlags; // Flags determined by NT
|
||
|
|
struct _EXCEPTION_RECORD *ExceptionRecord; // An extra exception record (not used)
|
||
|
|
void * ExceptionAddress; // Address at which exception occurred
|
||
|
|
DWORD NumberParameters; // Number of extended parameters. (= EH_EXCEPTION_PARAMETERS)
|
||
|
|
struct EHParameters {
|
||
|
|
DWORD magicNumber; // = EH_MAGIC_NUMBER1
|
||
|
|
void * pExceptionObject; // Pointer to the actual object thrown
|
||
|
|
ThrowInfo *pThrowInfo; // Description of thrown object
|
||
|
|
} params;
|
||
|
|
} EHExceptionRecord;
|
||
|
|
|
||
|
|
#define PER_CODE(per) ((per)->ExceptionCode)
|
||
|
|
#define PER_FLAGS(per) ((per)->ExceptionFlags)
|
||
|
|
#define PER_NEXT(per) ((per)->ExceptionRecord)
|
||
|
|
#define PER_ADDRESS(per) ((per)->ExceptionAddress)
|
||
|
|
#define PER_NPARAMS(per) ((per)->NumberParameters)
|
||
|
|
#define PER_MAGICNUM(per) ((per)->params.magicNumber)
|
||
|
|
#define PER_PEXCEPTOBJ(per) ((per)->params.pExceptionObject)
|
||
|
|
#define PER_PTHROW(per) ((per)->params.pThrowInfo)
|
||
|
|
#define PER_THROW(per) (*PER_PTHROW(per))
|
||
|
|
|
||
|
|
#define PER_ISSIMPLETYPE(t) (PER_THROW(t).isSimpleType)
|
||
|
|
#define PER_ISREFERENCE(t) (PER_THROW(t).isReference)
|
||
|
|
#define PER_ISCONST(t) (PER_THROW(t).isConst)
|
||
|
|
#define PER_ISVOLATILE(t) (PER_THROW(t).isVolatile)
|
||
|
|
#define PER_ISUNALIGNED(t) (PER_THROW(t).isUnaligned)
|
||
|
|
#define PER_UNWINDFUNC(t) (PER_THROW(t).pmfnUnwind)
|
||
|
|
#define PER_PCTLIST(t) (PER_THROW(t).pCatchable)
|
||
|
|
#define PER_CTLIST(t) (*PER_PCTLIST(t))
|
||
|
|
|
||
|
|
#define PER_IS_MSVC_EH(per) ((PER_CODE(per) == EH_EXCEPTION_NUMBER) && \
|
||
|
|
(PER_NPARAMS(per) == EH_EXCEPTION_PARAMETERS) && \
|
||
|
|
(PER_MAGICNUM(per) == EH_MAGIC_NUMBER1))
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// NT kernel routines and definitions required to implement exception handling:
|
||
|
|
//
|
||
|
|
// (from ntxcapi.h, which is not a public header file)
|
||
|
|
//
|
||
|
|
//---------------------------------------------------------------------------
|
||
|
|
|
||
|
|
#ifndef _NTXCAPI_
|
||
|
|
|
||
|
|
// begin_ntddk
|
||
|
|
//
|
||
|
|
// Exception flag definitions.
|
||
|
|
//
|
||
|
|
|
||
|
|
// begin_winnt
|
||
|
|
#define EXCEPTION_NONCONTINUABLE 0x1 // Noncontinuable exception
|
||
|
|
// end_winnt
|
||
|
|
|
||
|
|
// end_ntddk
|
||
|
|
#define EXCEPTION_UNWINDING 0x2 // Unwind is in progress
|
||
|
|
#define EXCEPTION_EXIT_UNWIND 0x4 // Exit unwind is in progress
|
||
|
|
#define EXCEPTION_STACK_INVALID 0x8 // Stack out of limits or unaligned
|
||
|
|
#define EXCEPTION_NESTED_CALL 0x10 // Nested exception handler call
|
||
|
|
#define EXCEPTION_TARGET_UNWIND 0x20 // Target unwind in progress
|
||
|
|
#define EXCEPTION_COLLIDED_UNWIND 0x40 // Collided exception handler call
|
||
|
|
|
||
|
|
#define EXCEPTION_UNWIND (EXCEPTION_UNWINDING | EXCEPTION_EXIT_UNWIND | \
|
||
|
|
EXCEPTION_TARGET_UNWIND | EXCEPTION_COLLIDED_UNWIND)
|
||
|
|
|
||
|
|
#define IS_UNWINDING(Flag) ((Flag & EXCEPTION_UNWIND) != 0)
|
||
|
|
#define IS_DISPATCHING(Flag) ((Flag & EXCEPTION_UNWIND) == 0)
|
||
|
|
#define IS_TARGET_UNWIND(Flag) (Flag & EXCEPTION_TARGET_UNWIND)
|
||
|
|
#define IS_EXIT_UNWIND(Flag) (Flag & EXCEPTION_EXIT_UNWIND)
|
||
|
|
|
||
|
|
#if !defined(_M_M68K)
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
void WINAPI
|
||
|
|
RtlUnwind (
|
||
|
|
IN void * TargetFrame OPTIONAL,
|
||
|
|
IN void * TargetIp OPTIONAL,
|
||
|
|
IN PEXCEPTION_RECORD ExceptionRecord OPTIONAL,
|
||
|
|
IN void * ReturnValue
|
||
|
|
);
|
||
|
|
|
||
|
|
#if defined(_M_ALPHA)
|
||
|
|
#define STATUS_UNWIND 0xc0000027
|
||
|
|
|
||
|
|
void WINAPI
|
||
|
|
RtlUnwindRfp (
|
||
|
|
IN void * TargetRealFrame OPTIONAL,
|
||
|
|
IN void * TargetIp OPTIONAL,
|
||
|
|
IN PEXCEPTION_RECORD ExceptionRecord OPTIONAL,
|
||
|
|
IN void * ReturnValue
|
||
|
|
);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if defined(_M_PPC)
|
||
|
|
ULONG WINAPI
|
||
|
|
RtlVirtualUnwind (
|
||
|
|
IN ULONG ControlPc,
|
||
|
|
IN PRUNTIME_FUNCTION FunctionEntry,
|
||
|
|
IN OUT PCONTEXT ContextRecord,
|
||
|
|
OUT PBOOLEAN InFunction,
|
||
|
|
OUT PULONG EstablisherFrame,
|
||
|
|
IN OUT PVOID ContextPointers OPTIONAL,
|
||
|
|
IN ULONG LowStackLimit,
|
||
|
|
IN ULONG HighStackLimit
|
||
|
|
);
|
||
|
|
|
||
|
|
PRUNTIME_FUNCTION
|
||
|
|
RtlLookupFunctionEntry (
|
||
|
|
IN ULONG ControlPc
|
||
|
|
);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if defined(_M_MPPC)
|
||
|
|
ULONG WINAPI
|
||
|
|
RtlVirtualUnwind (
|
||
|
|
IN ULONG ControlPc,
|
||
|
|
IN PRUNTIME_FUNCTION FunctionEntry,
|
||
|
|
IN OUT PCONTEXT ContextRecord,
|
||
|
|
OUT PBOOLEAN InFunction,
|
||
|
|
OUT PULONG EstablisherFrame,
|
||
|
|
IN OUT PVOID ContextPointers OPTIONAL,
|
||
|
|
IN ULONG LowStackLimit,
|
||
|
|
IN ULONG HighStackLimit
|
||
|
|
);
|
||
|
|
|
||
|
|
PRUNTIME_FUNCTION
|
||
|
|
RtlLookupFunctionEntry (
|
||
|
|
IN PRUNTIME_FUNCTION RuntimeFunction,
|
||
|
|
IN ULONG ControlPc,
|
||
|
|
IN ULONG Rtoc
|
||
|
|
);
|
||
|
|
|
||
|
|
VOID
|
||
|
|
RtlRaiseException (
|
||
|
|
IN PEXCEPTION_RECORD ExceptionRecord
|
||
|
|
);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* _NTXCAPI_ */
|
||
|
|
|
||
|
|
#endif /* _EHDATA_NONT */
|
||
|
|
|
||
|
|
#pragma pack(pop, ehdata)
|
||
|
|
|
||
|
|
#endif /* _INC_EHDATA */
|