/*

    File:       PatchListLDEF.c

    Contains:   

    Written by:     

    Copyright:  Copyright © 1995-1999 by Apple Computer, Inc., All Rights Reserved.

                You may incorporate this Apple sample source code into your program(s) without

                restriction. This Apple sample source code has been provided "AS IS" and the

                responsibility for its operation is yours. You are not permitted to redistribute

                this Apple sample source code as "Apple sample source code" after having made

                changes. If you're going to re-distribute the source, we require that you make

                it clear in the source that the code was descended from Apple sample source

                code, but that you've made changes.

    Change History (most recent first):

                8/10/1999   Karl Groethe    Updated for Metrowerks Codewarror Pro 2.1

*/

// System includes

#ifndef __TYPES__

    #include <Types.h>

#endif

#ifndef __LISTS__

    #include <Lists.h>

#endif

#ifndef __OSUTILS__

    #include <OSUtils.h>

#endif

// Application includes

#ifndef __BAREBONES__

    #include "BareBones.h"

#endif

#ifndef USE_LDEF

pascal void tabsLDEF ( short theMessage, short selFlags, Rect* theRect, Cell theCell,

                            short theOffset, short theLen, ListRef theHandle );

#if GENERATINGPOWERPC

#pragma options align=mac68k

#endif

#if GENERATINGCFM

typedef struct

{

    RoutineDescriptor   routineDescriptor;

} LDEFPatch, *LDEFPatchPtr, **LDEFPatchHndl;

#else

typedef struct

{

    short   jmpInst;

    ProcPtr patchAddr;

} LDEFPatch, *LDEFPatchPtr, **LDEFPatchHndl;

#endif

#if GENERATINGPOWERPC

#pragma options align=reset

#endif

OSErr PatchListLDEF ( ListRef theList );

OSErr PatchListLDEF ( ListRef theList )

{

    OSErr               theErr;

    LDEFPatchHndl       ldefHndl;

    LDEFPatchPtr        ldefPatch;

    RoutineDescriptor   initializedRD = BUILD_ROUTINE_DESCRIPTOR ( uppListDefProcInfo,

                                                                    tabsLDEF );

    ldefHndl = (LDEFPatchHndl) NewHandle ( sizeof ( LDEFPatch ) );

    theErr = MemError ( );

    if ( theErr )

        return theErr;

    HLock ( (Handle) ldefHndl );

    ldefPatch = *ldefHndl;

#if GENERATINGCFM

    ldefPatch->routineDescriptor = initializedRD;

#else

    ldefPatch->jmpInst = 0x4EF9;                    // a 68K JMP instruction

    ldefPatch->patchAddr = (ProcPtr) tabsLDEF;      // where we want to jmp

#endif

    HUnlock ( (Handle) ldefHndl );

    (*theList)->listDefProc = (Handle) ldefHndl;

    return noErr;

}

#endif