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/*
* tclLoadDyld.c --
*
* This procedure provides a version of the TclLoadFile that
* works with Apple's dyld dynamic loading. This file
* provided by Wilfredo Sanchez (wsanchez@apple.com).
* This works on Mac OS X.
*
* Copyright (c) 1995 Apple Computer, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tclLoadDyld.c,v 1.5.2.2 2002/02/05 02:22:05 wolfsuit Exp $
*/
#include "tclInt.h"
#include <mach-o/dyld.h>
/*
*----------------------------------------------------------------------
*
* TclpLoadFile --
*
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/*
* tclLoadDyld.c --
*
* This procedure provides a version of the TclLoadFile that
* works with Apple's dyld dynamic loading. This file
* provided by Wilfredo Sanchez (wsanchez@apple.com).
* This works on Mac OS X.
*
* Copyright (c) 1995 Apple Computer, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tclLoadDyld.c,v 1.5.2.3 2002/02/25 15:22:30 das Exp $
*/
#include "tclInt.h"
#include "tclPort.h"
#include <mach-o/dyld.h>
/*
*----------------------------------------------------------------------
*
* TclpLoadFile --
*
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* (*unloadProcPtr)() to unload the file. */
Tcl_FSUnloadFileProc **unloadProcPtr;
/* Filled with address of Tcl_FSUnloadFileProc
* function which should be used for
* this file. */
{
NSSymbol symbol;
enum DYLD_BOOL dyld_return;
Tcl_DString newName, ds;
char *native;
native = Tcl_FSGetNativePath(pathPtr);
dyld_return = NSAddLibrary(native);
if (dyld_return != TRUE) {
Tcl_AppendResult(interp, "dyld: couldn't add library \"",
Tcl_GetString(pathPtr),
"\": ", Tcl_PosixError(interp), (char *) NULL);
return TCL_ERROR;
if(NSIsSymbolNameDefined(native)) {
symbol = NSLookupAndBindSymbol(native);
if(NSIsSymbolNameDefined(native)) {
symbol = NSLookupAndBindSymbol(native);
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* (*unloadProcPtr)() to unload the file. */
Tcl_FSUnloadFileProc **unloadProcPtr;
/* Filled with address of Tcl_FSUnloadFileProc
* function which should be used for
* this file. */
{
NSSymbol symbol;
const struct mach_header *dyld_lib;
Tcl_DString newName, ds;
char *native;
native = Tcl_FSGetNativePath(pathPtr);
dyld_lib = NSAddImage(native,
NSADDIMAGE_OPTION_WITH_SEARCHING |
NSADDIMAGE_OPTION_RETURN_ON_ERROR);
if (!dyld_lib) {
NSLinkEditErrors editError;
char *name, *msg;
NSLinkEditError(&editError, &errno, &name, &msg);
Tcl_AppendResult(interp, msg, (char *) NULL);
return TCL_ERROR;
}
*unloadProcPtr = &TclpUnloadFile;
/*
* dyld adds an underscore to the beginning of symbol names.
*/
native = Tcl_UtfToExternalDString(NULL, sym1, -1, &ds);
Tcl_DStringInit(&newName);
Tcl_DStringAppend(&newName, "_", 1);
native = Tcl_DStringAppend(&newName, native, -1);
symbol = NSLookupSymbolInImage(dyld_lib, native,
NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_NOW |
NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR);
if(symbol) {
*proc1Ptr = NSAddressOfSymbol(symbol);
*clientDataPtr = NSModuleForSymbol(symbol);
} else {
*proc1Ptr=NULL;
*clientDataPtr=NULL;
}
Tcl_DStringFree(&newName);
Tcl_DStringFree(&ds);
native = Tcl_UtfToExternalDString(NULL, sym2, -1, &ds);
Tcl_DStringInit(&newName);
Tcl_DStringAppend(&newName, "_", 1);
native = Tcl_DStringAppend(&newName, native, -1);
symbol = NSLookupSymbolInImage(dyld_lib, native,
NSLOOKUPSYMBOLINIMAGE_OPTION_BIND_NOW |
NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR);
if(symbol) {
*proc2Ptr = NSAddressOfSymbol(symbol);
} else {
*proc2Ptr=NULL;
}
Tcl_DStringFree(&newName);
Tcl_DStringFree(&ds);
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void
TclpUnloadFile(clientData)
ClientData clientData; /* ClientData returned by a previous call
* to TclpLoadFile(). The clientData is
* a token that represents the loaded
* file. */
{
/* Unloading Libraries is not currently supported by dyld */
}
/*
*----------------------------------------------------------------------
*
* TclGuessPackageName --
*
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void
TclpUnloadFile(clientData)
ClientData clientData; /* ClientData returned by a previous call
* to TclpLoadFile(). The clientData is
* a token that represents the loaded
* file. */
{
NSUnLinkModule(clientData, FALSE);
}
/*
*----------------------------------------------------------------------
*
* TclGuessPackageName --
*
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