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- /*
- * tclLoadShl.c --
- *
- * This procedure provides a version of the TclLoadFile that works
- * with the "shl_load" and "shl_findsym" library procedures for
- * dynamic loading (e.g. for HP machines).
- *
- * Copyright (c) 1995-1996 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: @(#) tclLoadShl.c 1.5 96/03/15 15:01:44
- */
-
- #include <dl.h>
-
- /*
- * On some HP machines, dl.h defines EXTERN; remove that definition.
- */
-
- #ifdef EXTERN
- # undef EXTERN
- #endif
-
- #include "tcl.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. */
- {
- shl_t handle;
- Tcl_DString newName;
-
- handle = shl_load(fileName, BIND_IMMEDIATE, 0L);
- if (handle == NULL) {
- Tcl_AppendResult(interp, "couldn't load file \"", fileName,
- "\": ", Tcl_PosixError(interp), (char *) NULL);
- return TCL_ERROR;
- }
-
- /*
- * Some versions of the HP system software still use "_" at the
- * beginning of exported symbols while others don't; try both
- * forms of each name.
- */
-
- if (shl_findsym(&handle, sym1, (short) TYPE_PROCEDURE, (void *) proc1Ptr)
- != 0) {
- Tcl_DStringInit(&newName);
- Tcl_DStringAppend(&newName, "_", 1);
- Tcl_DStringAppend(&newName, sym1, -1);
- if (shl_findsym(&handle, Tcl_DStringValue(&newName),
- (short) TYPE_PROCEDURE, (void *) proc1Ptr) != 0) {
- *proc1Ptr = NULL;
- }
- Tcl_DStringFree(&newName);
- }
- if (shl_findsym(&handle, sym2, (short) TYPE_PROCEDURE, (void *) proc2Ptr)
- != 0) {
- Tcl_DStringInit(&newName);
- Tcl_DStringAppend(&newName, "_", 1);
- Tcl_DStringAppend(&newName, sym2, -1);
- if (shl_findsym(&handle, Tcl_DStringValue(&newName),
- (short) TYPE_PROCEDURE, (void *) proc2Ptr) != 0) {
- *proc2Ptr = NULL;
- }
- Tcl_DStringFree(&newName);
- }
- 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;
- }
-