1 files changed, 128 insertions, 0 deletions
diff --git a/unix/tclLoadOSF.c b/unix/tclLoadOSF.c
new file mode 100644
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+/* 
+ * tclLoadOSF.c --
+ *
+ *	This procedure provides a version of the TclLoadFile that works
+ *	under OSF/1 1.0/1.1/1.2 and related systems, utilizing the old OSF/1
+ *	/sbin/loader and /usr/include/loader.h.  OSF/1 versions from 1.3 and
+ *	on use ELF, rtld, and dlopen()[/usr/include/ldfcn.h].
+ *
+ *	This is useful for:
+ *		OSF/1 1.0, 1.1, 1.2 (from OSF)
+ *			includes: MK4 and AD1 (from OSF RI)
+ *		OSF/1 1.3 (from OSF) using ROSE
+ *		HP OSF/1 1.0 ("Acorn") using COFF
+ *
+ *	This is likely to be useful for:
+ *		Paragon OSF/1 (from Intel) 
+ *		HI-OSF/1 (from Hitachi) 
+ *
+ *	This is NOT to be used on:
+ *		Digitial Alpha OSF/1 systems
+ *		OSF/1 1.3 or later (from OSF) using ELF
+ *			includes: MK6, MK7, AD2, AD3 (from OSF RI)
+ *
+ *	This approach to things was utter @&^#; thankfully,
+ * 	OSF/1 eventually supported dlopen().
+ *
+ *	John Robert LoVerso <loverso@freebsd.osf.org>
+ *
+ * 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: @(#) tclLoadOSF.c 1.2 96/02/15 11:58:40
+ */
+
+#include "tclInt.h"
+#include <sys/types.h>
+#include <loader.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. */
+{
+    ldr_module_t lm;
+    char *pkg;
+
+    lm = (Tcl_PackageInitProc *) load(fileName, LDR_NOFLAGS);
+    if (lm == LDR_NULL_MODULE) {
+	Tcl_AppendResult(interp, "couldn't load file \"", fileName,
+	    "\": ", Tcl_PosixError (interp), (char *) NULL);
+	return TCL_ERROR;
+    }
+
+    /*
+     * My convention is to use a [OSF loader] package name the same as shlib,
+     * since the idiots never implemented ldr_lookup() and it is otherwise
+     * impossible to get a package name given a module.
+     *
+     * I build loadable modules with a makefile rule like 
+     *		ld ... -export $@: -o $@ $(OBJS)
+     */
+    if ((pkg = strrchr(fileName, '/')) == NULL)
+	pkg = fileName;
+    else
+	pkg++;
+    *proc1Ptr = ldr_lookup_package(pkg, sym1);
+    *proc2Ptr = ldr_lookup_package(pkg, 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;
+}