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/* -*- mode: C++; tab-width: 4 -*- */
/* ===================================================================== *\
Copyright (c) 2001 PocketPyro, Inc.
Portions Copyright (c) Palm, Inc.
All rights reserved.
This file is part of the Palm OS Emulator.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
\* ===================================================================== */
#ifndef EmPatchModuleTypes_h
#define EmPatchModuleTypes_h
#include "EmPatchIf.h" // HeadpatchProc, TailpatchProc, IEmPatchModule
#include "EmStructs.h" // SystemCallContext
// ======================================================================
// At compile time, the list of functions we want to head- and tailpatch
// are stored in an array of ProtoPatchTableEntries. At runtime, these
// compact arrays are expanded by PatchModule into a sparse array
// so that the function dispatch number can be used to look up the
// patch function.
// ======================================================================
struct ProtoPatchTableEntry
{
uint16 fTrapWord;
HeadpatchProc fHeadpatch;
TailpatchProc fTailpatch;
};
// ===========================================================================
// InstalledLibPatchEntry
// ===========================================================================
// Structure used to hold tail-patch information.
class InstalledLibPatchEntry
{
public:
InstalledLibPatchEntry (void) :
fIsDirty (true),
fTableP (NULL)
{
}
bool IsDirty (void) const
{
return fIsDirty;
}
void SetDirty (bool dirty = true)
{
fIsDirty = dirty;
}
IEmPatchModule* GetPatchTableP (void) const
{
return fTableP;
}
void SetPatchTableP (IEmPatchModule* tableP)
{
fTableP = tableP;
}
private:
bool fIsDirty;
IEmPatchModule* fTableP;
};
typedef vector<InstalledLibPatchEntry> PatchedLibIndex;
// ===========================================================================
// TailpatchType
// ===========================================================================
// Structure used to hold tail-patch information.
struct TailpatchType
{
SystemCallContext fContext;
int32 fCount;
TailpatchProc fTailpatch;
};
typedef vector<TailpatchType> TailPatchIndex;
#endif // EmPatchModuleTypes_h
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