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/*
* tclLoadDld.c --
*
* This procedure provides a version of dlopen() 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 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: @(#) tclLoadDld.c 1.4 96/02/15 11:58:46
*/
#include "tcl.h"
#include "compat/dlfcn.h"
#include "dld.h"
/*
*----------------------------------------------------------------------
*
* dlopen --
*
* This function is an implementation of dlopen() using
* the dld library.
*
* Results:
* Returns the handle of the newly loaded library, or NULL on
* failure.
*
* Side effects:
* Loads the specified library into the process.
*
*----------------------------------------------------------------------
*/
static int returnCode = 0;
extern char *tclExecutableName;
void *dlopen(path, mode)
const char *path;
int mode;
{
static int firstTime = 1;
/*
* The dld package needs to know the pathname to the tcl binary.
* If that's not know, return an error.
*/
returnCode = 0;
if (firstTime) {
if (tclExecutableName == NULL) {
return (void *) NULL;
}
returnCode = dld_init(tclExecutableName);
if (returnCode != 0) {
return (void *) NULL;
}
firstTime = 0;
}
if ((path != NULL) && ((returnCode = dld_link(path)) != 0)) {
return (void *) NULL;
}
return (void *) 1;
}
void *
dlsym(handle, symbol)
void *handle;
const char *symbol;
{
return (void *) dld_get_func(symbol);
}
char *
dlerror()
{
if (tclExecutableName == NULL) {
return (char *) "don't know name of application binary file, so can't initialize dynamic loader";
}
return dld_strerror(returnCode);
}
int
dlclose(handle)
void *handle;
{
return 0;
}
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