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-rw-r--r--unix/tclLoadDld.c209
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diff --git a/unix/tclLoadDld.c b/unix/tclLoadDld.c
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--- a/unix/tclLoadDld.c
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-/*
- * tclLoadDld.c --
- *
- * This procedure provides a version of the TclLoadFile that works with
- * the "dld_link" and "dld_get_func" library procedures for dynamic
- * loading. It has been tested on Linux 1.1.95 and dld-3.2.7. This file
- * probably isn't needed anymore, since it makes more sense to use
- * "dl_open" etc.
- *
- * Copyright (c) 1995-1997 Sun Microsystems, Inc.
- *
- * See the file "license.terms" for information on usage and redistribution of
- * this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * RCS: @(#) $Id: tclLoadDld.c,v 1.13 2005/07/19 13:37:18 dkf Exp $
- */
-
-#include "tclInt.h"
-#include "dld.h"
-
-/*
- * In some systems, like SunOS 4.1.3, the RTLD_NOW flag isn't defined and this
- * argument to dlopen must always be 1.
- */
-
-#ifndef RTLD_NOW
-# define RTLD_NOW 1
-#endif
-
-/*
- *----------------------------------------------------------------------
- *
- * TclpDlopen --
- *
- * Dynamically loads a binary code file into memory and returns a handle
- * to the new code.
- *
- * Results:
- * A standard Tcl completion code. If an error occurs, an error message
- * is left in the interp's result.
- *
- * Side effects:
- * New code suddenly appears in memory.
- *
- *----------------------------------------------------------------------
- */
-
-int
-TclpDlopen(interp, pathPtr, loadHandle, unloadProcPtr)
- Tcl_Interp *interp; /* Used for error reporting. */
- Tcl_Obj *pathPtr; /* Name of the file containing the desired
- * code (UTF-8). */
- Tcl_LoadHandle *loadHandle; /* Filled with token for dynamically loaded
- * file which will be passed back to
- * (*unloadProcPtr)() to unload the file. */
- Tcl_FSUnloadFileProc **unloadProcPtr;
- /* Filled with address of Tcl_FSUnloadFileProc
- * function which should be used for this
- * file. */
-{
- static int firstTime = 1;
- int returnCode;
- char *fileName;
- CONST char *native;
-
- /*
- * The dld package needs to know the pathname to the tcl binary. If
- * that's not known, return an error.
- */
-
- if (firstTime) {
- if (tclExecutableName == NULL) {
- Tcl_SetResult(interp,
- "don't know name of application binary file, so can't initialize dynamic loader",
- TCL_STATIC);
- return TCL_ERROR;
- }
- returnCode = dld_init(tclExecutableName);
- if (returnCode != 0) {
- Tcl_AppendResult(interp,
- "initialization failed for dynamic loader: ",
- dld_strerror(returnCode), (char *) NULL);
- return TCL_ERROR;
- }
- firstTime = 0;
- }
-
- fileName = Tcl_GetString(pathPtr);
-
- /*
- * First try the full path the user gave us. This is particularly
- * important if the cwd is inside a vfs, and we are trying to load using a
- * relative path.
- */
-
- native = Tcl_FSGetNativePath(pathPtr);
- returnCode = dld_link(native);
-
- if (returnCode != 0) {
- Tcl_DString ds;
- native = Tcl_UtfToExternalDString(NULL, fileName, -1, &ds);
- returnCode = dld_link(native);
- Tcl_DStringFree(&ds);
- }
-
- if (returnCode != 0) {
- Tcl_AppendResult(interp, "couldn't load file \"", fileName, "\": ",
- dld_strerror(returnCode), (char *) NULL);
- return TCL_ERROR;
- }
- *loadHandle = (Tcl_LoadHandle) strcpy(
- (char *) ckalloc((unsigned) (strlen(fileName) + 1)), fileName);
- *unloadProcPtr = &TclpUnloadFile;
- return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclpFindSymbol --
- *
- * Looks up a symbol, by name, through a handle associated with a
- * previously loaded piece of code (shared library).
- *
- * Results:
- * Returns a pointer to the function associated with 'symbol' if it is
- * found. Otherwise returns NULL and may leave an error message in the
- * interp's result.
- *
- *----------------------------------------------------------------------
- */
-
-Tcl_PackageInitProc*
-TclpFindSymbol(interp, loadHandle, symbol)
- Tcl_Interp *interp;
- Tcl_LoadHandle loadHandle;
- CONST char *symbol;
-{
- return (Tcl_PackageInitProc *) dld_get_func(symbol);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclpUnloadFile --
- *
- * Unloads a dynamically loaded binary code file from memory. Code
- * pointers in the formerly loaded file are no longer valid after calling
- * this function.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Code removed from memory.
- *
- *----------------------------------------------------------------------
- */
-
-void
-TclpUnloadFile(loadHandle)
- Tcl_LoadHandle loadHandle; /* loadHandle returned by a previous call to
- * TclpDlopen(). The loadHandle is a token
- * that represents the loaded file. */
-{
- char *fileName;
-
- handle = (char *) loadHandle;
- dld_unlink_by_file(handle, 0);
- ckfree(handle);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * 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)
- CONST 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;
-}
-
-/*
- * Local Variables:
- * mode: c
- * c-basic-offset: 4
- * fill-column: 78
- * End:
- */