Initial revision

1 files changed, 125 insertions, 0 deletions

diff --git a/unix/tclLoadDld.c b/unix/tclLoadDld.c
new file mode 100644
index 0000000..0ef994a
--- /dev/null
+++ b/unix/tclLoadDld.c
@@ -0,0 +1,125 @@
+/* 
+ * 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 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 1.5 97/05/14 13:24:22
+ */
+
+#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
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * 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. */
+{
+    static int firstTime = 1;
+    int returnCode;
+
+    /*
+     *  The dld package needs to know the pathname to the tcl binary.
+     *  If that's not know, 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;
+    }
+
+    if ((returnCode = dld_link(fileName)) != 0) {
+	Tcl_AppendResult(interp, "couldn't load file \"", fileName,
+	    "\": ", dld_strerror(returnCode), (char *) NULL);
+	return TCL_ERROR;
+    }
+    *proc1Ptr = (Tcl_PackageInitProc *) dld_get_func(sym1);
+    *proc2Ptr = (Tcl_PackageInitProc *) dld_get_func(sym2);
+    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;
+}