/*
|
/*
|
* tclLoadDld.c --
|
* tclLoadDld.c --
|
*
|
*
|
* This procedure provides a version of the TclLoadFile that
|
* This procedure provides a version of the TclLoadFile that
|
* works with the "dld_link" and "dld_get_func" library procedures
|
* works with the "dld_link" and "dld_get_func" library procedures
|
* for dynamic loading. It has been tested on Linux 1.1.95 and
|
* 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
|
* dld-3.2.7. This file probably isn't needed anymore, since it
|
* makes more sense to use "dl_open" etc.
|
* makes more sense to use "dl_open" etc.
|
*
|
*
|
* Copyright (c) 1995 Sun Microsystems, Inc.
|
* Copyright (c) 1995 Sun Microsystems, Inc.
|
*
|
*
|
* See the file "license.terms" for information on usage and redistribution
|
* See the file "license.terms" for information on usage and redistribution
|
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
*
|
*
|
* RCS: @(#) $Id: tclLoadDld.c,v 1.1.1.1 2002-01-16 10:25:37 markom Exp $
|
* RCS: @(#) $Id: tclLoadDld.c,v 1.1.1.1 2002-01-16 10:25:37 markom Exp $
|
*/
|
*/
|
|
|
#include "tclInt.h"
|
#include "tclInt.h"
|
#include "dld.h"
|
#include "dld.h"
|
|
|
/*
|
/*
|
* In some systems, like SunOS 4.1.3, the RTLD_NOW flag isn't defined
|
* In some systems, like SunOS 4.1.3, the RTLD_NOW flag isn't defined
|
* and this argument to dlopen must always be 1.
|
* and this argument to dlopen must always be 1.
|
*/
|
*/
|
|
|
#ifndef RTLD_NOW
|
#ifndef RTLD_NOW
|
# define RTLD_NOW 1
|
# define RTLD_NOW 1
|
#endif
|
#endif
|
|
|
/*
|
/*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*
|
*
|
* TclLoadFile --
|
* TclLoadFile --
|
*
|
*
|
* Dynamically loads a binary code file into memory and returns
|
* Dynamically loads a binary code file into memory and returns
|
* the addresses of two procedures within that file, if they
|
* the addresses of two procedures within that file, if they
|
* are defined.
|
* are defined.
|
*
|
*
|
* Results:
|
* Results:
|
* A standard Tcl completion code. If an error occurs, an error
|
* A standard Tcl completion code. If an error occurs, an error
|
* message is left in interp->result. *proc1Ptr and *proc2Ptr
|
* message is left in interp->result. *proc1Ptr and *proc2Ptr
|
* are filled in with the addresses of the symbols given by
|
* are filled in with the addresses of the symbols given by
|
* *sym1 and *sym2, or NULL if those symbols can't be found.
|
* *sym1 and *sym2, or NULL if those symbols can't be found.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* New code suddenly appears in memory.
|
* New code suddenly appears in memory.
|
*
|
*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*/
|
*/
|
|
|
int
|
int
|
TclLoadFile(interp, fileName, sym1, sym2, proc1Ptr, proc2Ptr)
|
TclLoadFile(interp, fileName, sym1, sym2, proc1Ptr, proc2Ptr)
|
Tcl_Interp *interp; /* Used for error reporting. */
|
Tcl_Interp *interp; /* Used for error reporting. */
|
char *fileName; /* Name of the file containing the desired
|
char *fileName; /* Name of the file containing the desired
|
* code. */
|
* code. */
|
char *sym1, *sym2; /* Names of two procedures to look up in
|
char *sym1, *sym2; /* Names of two procedures to look up in
|
* the file's symbol table. */
|
* the file's symbol table. */
|
Tcl_PackageInitProc **proc1Ptr, **proc2Ptr;
|
Tcl_PackageInitProc **proc1Ptr, **proc2Ptr;
|
/* Where to return the addresses corresponding
|
/* Where to return the addresses corresponding
|
* to sym1 and sym2. */
|
* to sym1 and sym2. */
|
{
|
{
|
static int firstTime = 1;
|
static int firstTime = 1;
|
int returnCode;
|
int returnCode;
|
|
|
/*
|
/*
|
* The dld package needs to know the pathname to the tcl binary.
|
* The dld package needs to know the pathname to the tcl binary.
|
* If that's not know, return an error.
|
* If that's not know, return an error.
|
*/
|
*/
|
|
|
if (firstTime) {
|
if (firstTime) {
|
if (tclExecutableName == NULL) {
|
if (tclExecutableName == NULL) {
|
Tcl_SetResult(interp,
|
Tcl_SetResult(interp,
|
"don't know name of application binary file, so can't initialize dynamic loader",
|
"don't know name of application binary file, so can't initialize dynamic loader",
|
TCL_STATIC);
|
TCL_STATIC);
|
return TCL_ERROR;
|
return TCL_ERROR;
|
}
|
}
|
returnCode = dld_init(tclExecutableName);
|
returnCode = dld_init(tclExecutableName);
|
if (returnCode != 0) {
|
if (returnCode != 0) {
|
Tcl_AppendResult(interp,
|
Tcl_AppendResult(interp,
|
"initialization failed for dynamic loader: ",
|
"initialization failed for dynamic loader: ",
|
dld_strerror(returnCode), (char *) NULL);
|
dld_strerror(returnCode), (char *) NULL);
|
return TCL_ERROR;
|
return TCL_ERROR;
|
}
|
}
|
firstTime = 0;
|
firstTime = 0;
|
}
|
}
|
|
|
if ((returnCode = dld_link(fileName)) != 0) {
|
if ((returnCode = dld_link(fileName)) != 0) {
|
Tcl_AppendResult(interp, "couldn't load file \"", fileName,
|
Tcl_AppendResult(interp, "couldn't load file \"", fileName,
|
"\": ", dld_strerror(returnCode), (char *) NULL);
|
"\": ", dld_strerror(returnCode), (char *) NULL);
|
return TCL_ERROR;
|
return TCL_ERROR;
|
}
|
}
|
*proc1Ptr = (Tcl_PackageInitProc *) dld_get_func(sym1);
|
*proc1Ptr = (Tcl_PackageInitProc *) dld_get_func(sym1);
|
*proc2Ptr = (Tcl_PackageInitProc *) dld_get_func(sym2);
|
*proc2Ptr = (Tcl_PackageInitProc *) dld_get_func(sym2);
|
return TCL_OK;
|
return TCL_OK;
|
}
|
}
|
|
|
/*
|
/*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*
|
*
|
* TclGuessPackageName --
|
* TclGuessPackageName --
|
*
|
*
|
* If the "load" command is invoked without providing a package
|
* If the "load" command is invoked without providing a package
|
* name, this procedure is invoked to try to figure it out.
|
* name, this procedure is invoked to try to figure it out.
|
*
|
*
|
* Results:
|
* Results:
|
* Always returns 0 to indicate that we couldn't figure out a
|
* Always returns 0 to indicate that we couldn't figure out a
|
* package name; generic code will then try to guess the package
|
* package name; generic code will then try to guess the package
|
* from the file name. A return value of 1 would have meant that
|
* from the file name. A return value of 1 would have meant that
|
* we figured out the package name and put it in bufPtr.
|
* we figured out the package name and put it in bufPtr.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* None.
|
* None.
|
*
|
*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*/
|
*/
|
|
|
int
|
int
|
TclGuessPackageName(fileName, bufPtr)
|
TclGuessPackageName(fileName, bufPtr)
|
char *fileName; /* Name of file containing package (already
|
char *fileName; /* Name of file containing package (already
|
* translated to local form if needed). */
|
* translated to local form if needed). */
|
Tcl_DString *bufPtr; /* Initialized empty dstring. Append
|
Tcl_DString *bufPtr; /* Initialized empty dstring. Append
|
* package name to this if possible. */
|
* package name to this if possible. */
|
{
|
{
|
return 0;
|
return 0;
|
}
|
}
|
|
|
