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- /*
- * tclLoadNext.c --
- *
- * This procedure provides a version of the TclLoadFile that
- * works with NeXTs rld_* dynamic loading. This file provided
- * by Pedja Bogdanovich.
- *
- * Copyright (c) 1995 Sun Microsystems, Inc.
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * SCCS: @(#) tclLoadNext.c 1.4 96/02/15 11:58:55
- */
-
- #include "tclInt.h"
- #include <mach-o/rld.h>
- #include <streams/streams.h>
-
- /*
- *----------------------------------------------------------------------
- *
- * TclLoadFile --
- *
- * Dynamically loads a binary code file into memory and returns
- * the addresses of two procedures within that file, if they
- * are defined.
- *
- * Results:
- * A standard Tcl completion code. If an error occurs, an error
- * message is left in interp->result. *proc1Ptr and *proc2Ptr
- * are filled in with the addresses of the symbols given by
- * *sym1 and *sym2, or NULL if those symbols can't be found.
- *
- * Side effects:
- * New code suddenly appears in memory.
- *
- *----------------------------------------------------------------------
- */
-
- int
- TclLoadFile(interp, fileName, sym1, sym2, proc1Ptr, proc2Ptr)
- Tcl_Interp *interp; /* Used for error reporting. */
- char *fileName; /* Name of the file containing the desired
- * code. */
- char *sym1, *sym2; /* Names of two procedures to look up in
- * the file's symbol table. */
- Tcl_PackageInitProc **proc1Ptr, **proc2Ptr;
- /* Where to return the addresses corresponding
- * to sym1 and sym2. */
- {
- struct mach_header *header;
- char *data;
- int len, maxlen;
- char *files[]={fileName,NULL};
- NXStream *errorStream=NXOpenMemory(0,0,NX_READWRITE);
-
- if(!rld_load(errorStream,&header,files,NULL)) {
- NXGetMemoryBuffer(errorStream,&data,&len,&maxlen);
- Tcl_AppendResult(interp,"couldn't load file \"",fileName,"\": ",data,NULL);
- NXCloseMemory(errorStream,NX_FREEBUFFER);
- return TCL_ERROR;
- }
- NXCloseMemory(errorStream,NX_FREEBUFFER);
-
- *proc1Ptr=NULL;
- if(sym1) {
- char sym[strlen(sym1)+2];
- sym[0]='_'; sym[1]=0; strcat(sym,sym1);
- rld_lookup(NULL,sym,(unsigned long *)proc1Ptr);
- }
-
- *proc2Ptr=NULL;
- if(sym2) {
- char sym[strlen(sym2)+2];
- sym[0]='_'; sym[1]=0; strcat(sym,sym2);
- rld_lookup(NULL,sym,(unsigned long *)proc2Ptr);
- }
-
- return TCL_OK;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * TclGuessPackageName --
- *
- * If the "load" command is invoked without providing a package
- * name, this procedure is invoked to try to figure it out.
- *
- * Results:
- * Always returns 0 to indicate that we couldn't figure out a
- * package name; generic code will then try to guess the package
- * from the file name. A return value of 1 would have meant that
- * we figured out the package name and put it in bufPtr.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- int
- TclGuessPackageName(fileName, bufPtr)
- char *fileName; /* Name of file containing package (already
- * translated to local form if needed). */
- Tcl_DString *bufPtr; /* Initialized empty dstring. Append
- * package name to this if possible. */
- {
- return 0;
- }
-