diff --git a/configure.in b/configure.in
index 5ba2740be80d..dd24568a587c 100644
--- a/configure.in
+++ b/configure.in
@@ -1254,6 +1254,7 @@ xpcom/libxpt/Makefile
 xpcom/libxpt/public/Makefile
 xpcom/libxpt/src/Makefile
 xpcom/libxpt/tests/Makefile
+xpcom/libxpt/tools/Makefile
 silentdl/Makefile
 xpfe/Makefile
 xpfe/browser/Makefile
diff --git a/xpcom/libxpt/Makefile.in b/xpcom/libxpt/Makefile.in
index c5e79fd12465..843a38bcce39 100644
--- a/xpcom/libxpt/Makefile.in
+++ b/xpcom/libxpt/Makefile.in
@@ -25,4 +25,6 @@ DIRS	= public src
 
 DIRS    += tests
 
+DIRS	+= tools
+
 include $(topsrcdir)/config/rules.mk
diff --git a/xpcom/libxpt/tests/SimpleTypeLib.c b/xpcom/libxpt/tests/SimpleTypeLib.c
index f0fc94522aba..299e4185c57d 100644
--- a/xpcom/libxpt/tests/SimpleTypeLib.c
+++ b/xpcom/libxpt/tests/SimpleTypeLib.c
@@ -142,7 +142,7 @@ main(int argc, char **argv)
     ok = XPT_DoHeader(cursor, &header);
     TRY("DoHeader", ok);
 
-    /*    out = fopen(argv[1], "w");
+    out = fopen(argv[1], "w");
     if (!out) {
         perror("FAILED: fopen");
         return 1;
@@ -155,351 +155,8 @@ main(int argc, char **argv)
     fwrite(data, len, 1, out);
     fclose(out);
     XPT_DestroyXDRState(state);
-    */
-    fprintf(stderr, "\n'%s' Header:\n", argv[1]);
-    XPT_DumpHeader(header);
 
     /* XXX DestroyHeader */
     return 0;
 }
 
-PRBool
-XPT_DumpHeader(XPTHeader *header) 
-{
-    fprintf(stderr, "%sMagic beans:      %s\n", INDENT, header->magic);
-    fprintf(stderr, "%sMajor version:    %d\n", INDENT, header->major_version);
-    fprintf(stderr, "%sMinor version:    %d\n", INDENT, header->minor_version);
-    fprintf(stderr, "%s# of interfaces:  %d\n", INDENT, 
-            header->num_interfaces);
-    fprintf(stderr, "%sFile length:      %d\n", INDENT, header->file_length);
-    fprintf(stderr, "%sData pool offset: %d\n", INDENT, header->data_pool);
-
-    if (!XPT_DumpAnnotations(header->annotations))
-        return PR_FALSE;
-    
-    if (!XPT_DumpIDEs(header->interface_directory, header->num_interfaces))
-        return PR_FALSE;
-
-    return PR_TRUE;
-}    
-
-PRBool
-XPT_DumpAnnotations(XPTAnnotation *ann) 
-{
-    int i = -1, j = 0;
-    XPTAnnotation *last;
-
-    fprintf(stderr, "\n%sAnnotations:\n", INDENT);
-
-    do {
-        i++;
-        if (XPT_ANN_IS_PRIVATE(ann->flags)) {
-            fprintf(stderr, "%sAnnotation #%d is private.\n", 
-                    DOUBLE_INDENT, i);
-            fprintf(stderr, "%sCreator:      ", TRIPLE_INDENT);
-            if (!XPT_DumpXPTString(ann->creator))
-                return PR_FALSE;
-            fprintf(stderr, "\n");
-            fprintf(stderr, "%sPrivate Data: ", TRIPLE_INDENT);            
-            if (!XPT_DumpXPTString(ann->private_data))
-                return PR_FALSE;
-            fprintf(stderr, "\n");
-        } else {
-            fprintf(stderr, "%sAnnotation #%d is empty.\n", 
-                    DOUBLE_INDENT, i);
-        }
-        last = ann;
-        ann = ann->next;
-    } while (!XPT_ANN_IS_LAST(last->flags));
-        
-    fprintf(stderr, "%sAnnotation #%d is the last annotation.\n", 
-            DOUBLE_INDENT, i);
-    
-    return PR_TRUE;
-}    
-
-PRBool
-XPT_DumpIDEs(XPTInterfaceDirectoryEntry *ide, int num_interfaces)
-{
-    int i;
-    
-    fprintf(stderr, "\n%sInterface Directory:\n", INDENT);
-    for (i=0; i<num_interfaces; i++) {
-        fprintf(stderr, "%sInterface #%d:\n", DOUBLE_INDENT, i);
-        fprintf(stderr, "%sIID:                             "
-                "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x\n",
-                TRIPLE_INDENT,
-                ide->iid.m0, (PRUint32) ide->iid.m1,(PRUint32) ide->iid.m2,
-                (PRUint32) ide->iid.m3[0], (PRUint32) ide->iid.m3[1],
-                (PRUint32) ide->iid.m3[2], (PRUint32) ide->iid.m3[3],
-                (PRUint32) ide->iid.m3[4], (PRUint32) ide->iid.m3[5],
-                (PRUint32) ide->iid.m3[6], (PRUint32) ide->iid.m3[7]);
-
-        fprintf(stderr, "%sName:                            %s\n", 
-                TRIPLE_INDENT, ide->name);
-        fprintf(stderr, "%sNamespace:                       %s\n", 
-                TRIPLE_INDENT, ide->namespace);
-        fprintf(stderr, "%sAddress of interface descriptor: %p\n", 
-                TRIPLE_INDENT, ide->interface_descriptor);
-        if (!XPT_DumpInterfaceDescriptor(ide->interface_descriptor))
-            return PR_FALSE;
-    }
-    return PR_TRUE;
-}    
-
-PRBool
-XPT_DumpInterfaceDescriptor(XPTInterfaceDescriptor *id)
-{
-    int i;
-
-    fprintf(stderr, "%sDescriptor:\n", TRIPLE_INDENT);
-    fprintf(stderr, "%sOffset of parent interface (in data pool): %d\n", 
-            QUAD_INDENT, id->parent_interface);
-    fprintf(stderr, "%s# of Method Descriptors:                   %d\n", 
-            QUAD_INDENT, id->num_methods);
-    for (i=0; i<id->num_methods; i++) {
-        fprintf(stderr, "%sMethod #%d:\n", QUINT_INDENT, i);
-        if (!XPT_DumpMethodDescriptor(&id->method_descriptors[i]))
-            return PR_FALSE;
-    }
-    fprintf(stderr, "%s# of Constant Descriptors:                  %d\n", 
-            QUAD_INDENT, id->num_constants);
-    for (i=0; i<id->num_constants; i++) {
-        fprintf(stderr, "%sConstant #%d:\n", QUINT_INDENT, i);
-        if (!XPT_DumpConstDescriptor(&id->const_descriptors[i]))
-            return PR_FALSE;
-    }
-    
-    return PR_TRUE;
-}
-
-PRBool
-XPT_DumpMethodDescriptor(XPTMethodDescriptor *md)
-{
-    int i;
-
-    fprintf(stderr, "%sName:             %s\n", SEXT_INDENT, md->name);
-    fprintf(stderr, "%sIs Getter?        ", SEXT_INDENT);
-    if (XPT_MD_IS_GETTER(md->flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%sIs Setter?        ", SEXT_INDENT);
-    if (XPT_MD_IS_SETTER(md->flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%sIs Varargs?       ", SEXT_INDENT);
-    if (XPT_MD_IS_VARARGS(md->flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%sIs Constructor?   ", SEXT_INDENT);
-    if (XPT_MD_IS_CTOR(md->flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%sIs Hidden?        ", SEXT_INDENT);
-    if (XPT_MD_IS_HIDDEN(md->flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%s# of arguments:   %d\n", SEXT_INDENT, md->num_args);
-    fprintf(stderr, "%sParameter Descriptors:\n", SEXT_INDENT);
-
-    for (i=0; i<md->num_args; i++) {
-        fprintf(stderr, "%sParameter #%d:\n", SEPT_INDENT, i);
-        
-        if (!XPT_DumpParamDescriptor(&md->params[i]))
-            return PR_FALSE;
-    }
-   
-    fprintf(stderr, "%sResult:\n", SEXT_INDENT);
-    if (!XPT_DumpParamDescriptor(md->result))
-        return PR_FALSE;
-    
-    return PR_TRUE;
-}
-
-PRBool
-XPT_DumpXPTString(XPTString *str)
-{
-    int i;
-    for (i=0; i<str->length; i++) {
-        fprintf(stderr, "%c", str->bytes[i]);
-    }
-    return PR_TRUE;
-}
-
-PRBool
-XPT_DumpParamDescriptor(XPTParamDescriptor *pd)
-{
-    fprintf(stderr, "%sIn Param?   ", OCT_INDENT);
-    if (XPT_PD_IS_IN(pd->flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-    
-    fprintf(stderr, "%sOut Param?  ", OCT_INDENT);
-    if (XPT_PD_IS_OUT(pd->flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-    
-    fprintf(stderr, "%sRetval?     ", OCT_INDENT);
-    if (XPT_PD_IS_RETVAL(pd->flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%sType Descriptor:\n", OCT_INDENT);
-    if (!XPT_DumpTypeDescriptor(&pd->type))
-        return PR_FALSE;
-    
-    return PR_TRUE;
-}
-
-PRBool
-XPT_DumpTypeDescriptor(XPTTypeDescriptor *td)
-{
-    fprintf(stderr, "%sIs Pointer?        ", NONA_INDENT);
-    if (XPT_TDP_IS_POINTER(td->prefix.flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%sIs Unique Pointer? ", NONA_INDENT);
-    if (XPT_TDP_IS_UNIQUE_POINTER(td->prefix.flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%sIs Reference?      ", NONA_INDENT);
-    if (XPT_TDP_IS_REFERENCE(td->prefix.flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%sTag:               %d\n", NONA_INDENT, 
-            XPT_TDP_TAG(td->prefix));
-    
-    if (XPT_TDP_TAG(td->prefix) == TD_INTERFACE_TYPE) {
-        fprintf(stderr, "%sInterfaceTypeDescriptor:\n", NONA_INDENT); 
-        fprintf(stderr, "%sIndex of IDE:             %d\n", DECA_INDENT, 
-                td->type.interface);
-    }
-
-    if (XPT_TDP_TAG(td->prefix) == TD_INTERFACE_IS_TYPE) {
-        fprintf(stderr, "%sInterfaceTypeDescriptor:\n", NONA_INDENT); 
-        fprintf(stderr, "%sIndex of Method Argument: %d\n", DECA_INDENT, 
-                td->type.argnum);        
-    }
-
-    return PR_TRUE;
-}
-
-PRBool
-XPT_DumpConstDescriptor(XPTConstDescriptor *cd)
-{
-    fprintf(stderr, "%sName:   %s\n", SEXT_INDENT, cd->name);
-    fprintf(stderr, "%sType Descriptor: \n", SEXT_INDENT);
-    if (!XPT_DumpTypeDescriptor(&cd->type))
-        return PR_FALSE;
-    fprintf(stderr, "%sValue:  ", SEXT_INDENT);
-
-    switch(XPT_TDP_TAG(cd->type.prefix)) {
-    case TD_INT8:
-        fprintf(stderr, "%d\n", cd->value.i8);
-        break;
-    case TD_INT16:
-        fprintf(stderr, "%d\n", cd->value.i16);
-        break;
-    case TD_INT32:
-        fprintf(stderr, "%d\n", cd->value.i32);
-        break;
-    case TD_INT64:
-        fprintf(stderr, "%d\n", cd->value.i64);
-        break;
-    case TD_UINT8:
-        fprintf(stderr, "%d\n", cd->value.ui8);
-        break;
-    case TD_UINT16:
-        fprintf(stderr, "%d\n", cd->value.ui16);
-        break;
-    case TD_UINT32:
-        fprintf(stderr, "%d\n", cd->value.ui32);
-        break;
-    case TD_UINT64:
-        fprintf(stderr, "%d\n", cd->value.ui64);
-        break;
-    case TD_FLOAT:
-        fprintf(stderr, "%f\n", cd->value.flt);
-        break;
-    case TD_DOUBLE:
-        fprintf(stderr, "%g\n", cd->value.dbl);
-        break;
-    case TD_BOOL:
-        if (cd->value.bul)
-            fprintf(stderr, "TRUE\n");
-        else 
-            fprintf(stderr, "FALSE\n");
-            break;
-    case TD_CHAR:
-        fprintf(stderr, "%d\n", cd->value.ui64);
-        break;
-    case TD_WCHAR:
-        fprintf(stderr, "%d\n", cd->value.ui64);
-        break;
-    case TD_VOID:
-        fprintf(stderr, "VOID\n");
-        break;
-    case TD_PPNSIID:
-        if (XPT_TDP_IS_POINTER(cd->type.prefix.flags)) {
-        fprintf(stderr, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x\n",
-                cd->value.iid->m0, (PRUint32) cd->value.iid->m1,
-                (PRUint32) cd->value.iid->m2,
-                (PRUint32) cd->value.iid->m3[0], 
-                (PRUint32) cd->value.iid->m3[1],
-                (PRUint32) cd->value.iid->m3[2], 
-                (PRUint32) cd->value.iid->m3[3],
-                (PRUint32) cd->value.iid->m3[4], 
-                (PRUint32) cd->value.iid->m3[5],
-                (PRUint32) cd->value.iid->m3[6], 
-                (PRUint32) cd->value.iid->m3[7]);
-        } else 
-            return PR_FALSE;
-        break;
-    case TD_PBSTR:
-        if (XPT_TDP_IS_POINTER(cd->type.prefix.flags)) {
-            if (!XPT_DumpXPTString(cd->value.string))
-                return PR_FALSE;
-            fprintf(stderr, "\n");
-        } else 
-            return PR_FALSE;
-        break;            
-    case TD_PSTRING:
-        if (XPT_TDP_IS_POINTER(cd->type.prefix.flags)) {
-            fprintf(stderr, "%s\n", cd->value.str);
-        } else 
-            return PR_FALSE;
-        break;
-    case TD_PWSTRING:
-        if (XPT_TDP_IS_POINTER(cd->type.prefix.flags)) {
-            fprintf(stderr, "%s\n", cd->value.wstr);
-        } else 
-            return PR_FALSE;
-        break;
-    default:
-        perror("Unrecognized type");
-        return PR_FALSE;
-        break;   
-    }
-
-    return PR_TRUE;
-}
-
diff --git a/xpcom/libxpt/tools/.cvsignore b/xpcom/libxpt/tools/.cvsignore
new file mode 100644
index 000000000000..f3c7a7c5da68
--- /dev/null
+++ b/xpcom/libxpt/tools/.cvsignore
@@ -0,0 +1 @@
+Makefile
diff --git a/xpcom/libxpt/tools/Makefile.in b/xpcom/libxpt/tools/Makefile.in
new file mode 100644
index 000000000000..17c427e74d52
--- /dev/null
+++ b/xpcom/libxpt/tools/Makefile.in
@@ -0,0 +1,37 @@
+#
+# The contents of this file are subject to the Netscape Public License
+# Version 1.0 (the "NPL"); you may not use this file except in
+# compliance with the NPL.  You may obtain a copy of the NPL at
+# http://www.mozilla.org/NPL/
+#
+# Software distributed under the NPL is distributed on an "AS IS" basis,
+# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+# for the specific language governing rights and limitations under the
+# NPL.
+#
+# The Initial Developer of this code under the NPL is Netscape
+# Communications Corporation.  Portions created by Netscape are
+# Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+# Reserved.
+
+DEPTH		= ../../..
+topsrcdir	= @top_srcdir@
+srcdir		= @srcdir@
+VPATH		= @srcdir@
+
+include $(DEPTH)/config/autoconf.mk
+
+MODULE		= libxpt
+
+SIMPLE_PROGRAMS	= xpt_dump
+
+CSRCS		= xpt_dump.c
+
+LDFLAGS		= 		\
+		  -L$(DIST)/bin \
+		  -lxpt 	\
+		  $(NSPR_LIBS) 	\
+		  $(NULL)
+
+include $(topsrcdir)/config/rules.mk
+
diff --git a/xpcom/libxpt/tools/xpt_dump.c b/xpcom/libxpt/tools/xpt_dump.c
new file mode 100644
index 000000000000..436e8265f717
--- /dev/null
+++ b/xpcom/libxpt/tools/xpt_dump.c
@@ -0,0 +1,454 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+/*
+ * A utility for dumping the contents of a typelib file (.xpt) to screen 
+ */ 
+
+#include "xpt_xdr.h"
+#include <stdio.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#define BASE_INDENT 3
+
+int 
+main(int argc, char **argv)
+{
+    XPTState *state;
+    XPTCursor curs, *cursor = &curs;
+    XPTHeader *header;
+    struct stat file_stat;
+    int flen;
+    char *whole;
+    FILE *in;
+
+    if (argc != 2) {
+        fprintf(stderr, "Usage: %s <filename.xpt>\n"
+                "       Dumps a typelib file to screen.\n", argv[0]);
+        return 1;
+    }
+
+    if (stat(argv[1], &file_stat) != 0) {
+        perror("FAILED: fstat");
+        return 1;
+    }
+    flen = file_stat.st_size;
+
+    in = fopen(argv[1], "r");
+    if (!in) {
+        perror("FAILED: fopen");
+        return 1;
+    }
+
+    whole = malloc(flen);
+    if (!whole) {
+        perror("FAILED: malloc for whole");
+        return 1;
+    }
+
+    if (flen > 0) {
+        fread(whole, flen, 1, in);
+        state = XPT_NewXDRState(XPT_DECODE, whole, flen);
+        if (!XPT_MakeCursor(state, XPT_HEADER, 0, cursor)) {
+            fprintf(stderr, "MakeCursor failed\n");
+            return 1;
+        }
+        if (!XPT_DoHeader(cursor, &header)) {
+            fprintf(stderr, "DoHeader failed\n");
+            return 1;
+        }
+        if (!XPT_DumpHeader(header, BASE_INDENT)) {
+            perror("FAILED: XPT_DumpHeader");
+            return 1;
+        }
+        XPT_DestroyXDRState(state);
+        free(whole);
+    }
+
+    fclose(in);
+
+    return 0;
+}
+
+PRBool
+XPT_DumpHeader(XPTHeader *header, const int indent) 
+{
+    int i;
+    
+    fprintf(stderr, "%*sMagic beans:      ", indent, " ");
+    for (i=0; i<16; i++) {
+        fprintf(stderr, "%02x", header->magic[i]);
+    }
+    fprintf(stderr, "\n");
+    if (strncmp(header->magic, XPT_MAGIC, 16) == 0)
+        fprintf(stderr, "%*s                  PASSED\n", indent, " ");
+    else
+        fprintf(stderr, "%*s                  FAILED\n", indent, " "); 
+    fprintf(stderr, "%*sMajor version:    %d\n", indent, " ",
+            header->major_version);
+    fprintf(stderr, "%*sMinor version:    %d\n", indent, " ",
+            header->minor_version);
+    fprintf(stderr, "%*s# of interfaces:  %d\n", indent, " ",
+            header->num_interfaces);
+    fprintf(stderr, "%*sFile length:      %d\n", indent, " ",
+            header->file_length);
+    fprintf(stderr, "%*sData pool offset: %d\n", indent, " ",
+            header->data_pool);
+
+    fprintf(stderr, "\n%*sAnnotations:\n", indent, " ");
+    if (!XPT_DumpAnnotations(header->annotations, indent*2))
+        return PR_FALSE;
+    
+    fprintf(stderr, "\n%*sInterface Directory:\n", indent, " ");
+    for (i=0; i<header->num_interfaces; i++) {
+        fprintf(stderr, "%*sInterface #%d:\n", indent*2, " ", i);
+
+        if (!XPT_DumpInterfaceDirectoryEntry(header->interface_directory[i],
+                                             indent*3))
+            return PR_FALSE;
+    }
+
+    return PR_TRUE;
+}    
+
+PRBool
+XPT_DumpAnnotations(XPTAnnotation *ann, const int indent) 
+{
+    int i = -1, j = 0;
+    XPTAnnotation *last;
+    int new_indent = indent + BASE_INDENT;
+
+    do {
+        i++;
+        if (XPT_ANN_IS_PRIVATE(ann->flags)) {
+            fprintf(stderr, "%*sAnnotation #%d is private.\n", 
+                    indent, " ", i);
+            fprintf(stderr, "%*sCreator:      ", new_indent, " ");
+            if (!XPT_DumpXPTString(ann->creator))
+                return PR_FALSE;
+            fprintf(stderr, "\n");
+            fprintf(stderr, "%*sPrivate Data: ", new_indent, " ");            
+            if (!XPT_DumpXPTString(ann->private_data))
+                return PR_FALSE;
+            fprintf(stderr, "\n");
+        } else {
+            fprintf(stderr, "%*sAnnotation #%d is empty.\n", 
+                    indent, " ", i);
+        }
+        last = ann;
+        ann = ann->next;
+    } while (!XPT_ANN_IS_LAST(last->flags));
+        
+    fprintf(stderr, "%*sAnnotation #%d is the last annotation.\n", 
+            indent, " ", i);
+    
+    return PR_TRUE;
+}
+
+PRBool
+XPT_DumpInterfaceDirectoryEntry(XPTInterfaceDirectoryEntry *ide, const int indent)
+{
+    int new_indent = indent + BASE_INDENT;
+
+    fprintf(stderr, "%*sIID:                             "
+            "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x\n", indent, " ",
+            (PRUint32) ide->iid.m0, (PRUint32) ide->iid.m1,(PRUint32) ide->iid.m2,
+            (PRUint32) ide->iid.m3[0], (PRUint32) ide->iid.m3[1],
+            (PRUint32) ide->iid.m3[2], (PRUint32) ide->iid.m3[3],
+            (PRUint32) ide->iid.m3[4], (PRUint32) ide->iid.m3[5],
+            (PRUint32) ide->iid.m3[6], (PRUint32) ide->iid.m3[7]);
+    
+    fprintf(stderr, "%*sName:                            %s\n", 
+            indent, " ", ide->name);
+    fprintf(stderr, "%*sNamespace:                       %s\n", 
+            indent, " ", ide->namespace);
+    fprintf(stderr, "%*sAddress of interface descriptor: %p\n", 
+            indent, " ", ide->interface_descriptor);
+
+    fprintf(stderr, "%sDescriptor:\n", indent);
+    if (!XPT_DumpInterfaceDescriptor(ide->interface_descriptor, new_indent))
+        return PR_FALSE;
+
+    return PR_TRUE;
+}    
+
+PRBool
+XPT_DumpInterfaceDescriptor(XPTInterfaceDescriptor *id, int indent)
+{
+    int i;
+    int new_indent = indent + BASE_INDENT;
+    int more_indent = new_indent + BASE_INDENT;
+
+    fprintf(stderr, "%*sOffset of parent interface (in data pool): %d\n", 
+            indent, " ", id->parent_interface);
+    fprintf(stderr, "%*s# of Method Descriptors:                   %d\n", 
+            indent, " ", id->num_methods);
+    for (i=0; i<id->num_methods; i++) {
+        fprintf(stderr, "%*sMethod #%d:\n", new_indent, " ", i);
+        if (!XPT_DumpMethodDescriptor(&id->method_descriptors[i], more_indent))
+            return PR_FALSE;
+    }
+    fprintf(stderr, "%*s# of Constant Descriptors:                  %d\n", 
+            indent, id->num_constants);
+    for (i=0; i<id->num_constants; i++) {
+        fprintf(stderr, "%*sConstant #%d:\n", new_indent, " ", i);
+        if (!XPT_DumpConstDescriptor(&id->const_descriptors[i], more_indent))
+            return PR_FALSE;
+    }
+    
+    return PR_TRUE;
+}
+
+PRBool
+XPT_DumpMethodDescriptor(XPTMethodDescriptor *md, int indent)
+{
+    int i;
+    int new_indent = indent + BASE_INDENT;
+    int more_indent = new_indent + BASE_INDENT;
+
+    fprintf(stderr, "%*sName:             %s\n", indent, " ", md->name);
+    fprintf(stderr, "%*sIs Getter?        ", indent, " ");
+    if (XPT_MD_IS_GETTER(md->flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*sIs Setter?        ", indent, " ");
+    if (XPT_MD_IS_SETTER(md->flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*sIs Varargs?       ", indent, " ");
+    if (XPT_MD_IS_VARARGS(md->flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*sIs Constructor?   ", indent, " ");
+    if (XPT_MD_IS_CTOR(md->flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*sIs Hidden?        ", indent, " ");
+    if (XPT_MD_IS_HIDDEN(md->flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*s# of arguments:   %d\n", indent, " ", md->num_args);
+    fprintf(stderr, "%*sParameter Descriptors:\n", indent, " ");
+
+    for (i=0; i<md->num_args; i++) {
+        fprintf(stderr, "%*sParameter #%d:\n", new_indent, " ", i);
+        
+        if (!XPT_DumpParamDescriptor(&md->params[i], more_indent))
+            return PR_FALSE;
+    }
+   
+    fprintf(stderr, "%*sResult:\n", indent, " ");
+    if (!XPT_DumpParamDescriptor(md->result, new_indent))
+        return PR_FALSE;
+    
+    return PR_TRUE;
+}
+
+PRBool
+XPT_DumpXPTString(XPTString *str)
+{
+    int i;
+    for (i=0; i<str->length; i++) {
+        fprintf(stderr, "%c", str->bytes[i]);
+    }
+    return PR_TRUE;
+}
+
+PRBool
+XPT_DumpParamDescriptor(XPTParamDescriptor *pd, int indent)
+{
+    int new_indent = indent + BASE_INDENT;
+
+    fprintf(stderr, "%*sIn Param?   ", indent, " ");
+    if (XPT_PD_IS_IN(pd->flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+    
+    fprintf(stderr, "%*sOut Param?  ", indent, " ");
+    if (XPT_PD_IS_OUT(pd->flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+    
+    fprintf(stderr, "%*sRetval?     ", indent, " ");
+    if (XPT_PD_IS_RETVAL(pd->flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*sType Descriptor:\n", indent, " ");
+    if (!XPT_DumpTypeDescriptor(&pd->type, new_indent))
+        return PR_FALSE;
+    
+    return PR_TRUE;
+}
+
+PRBool
+XPT_DumpTypeDescriptor(XPTTypeDescriptor *td, int indent)
+{
+    int new_indent = indent + BASE_INDENT;
+
+    fprintf(stderr, "%*sIs Pointer?        ", indent, " ");
+    if (XPT_TDP_IS_POINTER(td->prefix.flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*sIs Unique Pointer? ", indent, " ");
+    if (XPT_TDP_IS_UNIQUE_POINTER(td->prefix.flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*sIs Reference?      ", indent, " ");
+    if (XPT_TDP_IS_REFERENCE(td->prefix.flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*sTag:               %d\n", indent, " ", 
+            XPT_TDP_TAG(td->prefix));
+    
+    if (XPT_TDP_TAG(td->prefix) == TD_INTERFACE_TYPE) {
+        fprintf(stderr, "%*sInterfaceTypeDescriptor:\n", indent, " "); 
+        fprintf(stderr, "%*sIndex of IDE:             %d\n", new_indent, " ", 
+                td->type.interface);
+    }
+
+    if (XPT_TDP_TAG(td->prefix) == TD_INTERFACE_IS_TYPE) {
+        fprintf(stderr, "%*sInterfaceTypeDescriptor:\n", indent, " "); 
+        fprintf(stderr, "%*sIndex of Method Argument: %d\n", new_indent, " ", 
+                td->type.argnum);        
+    }
+
+    return PR_TRUE;
+}
+
+PRBool
+XPT_DumpConstDescriptor(XPTConstDescriptor *cd, int indent)
+{
+    int new_indent = indent + BASE_INDENT;
+
+    fprintf(stderr, "%*sName:   %s\n", indent, " ", cd->name);
+    fprintf(stderr, "%*sType Descriptor: \n", " ", indent);
+    if (!XPT_DumpTypeDescriptor(&cd->type, new_indent))
+        return PR_FALSE;
+    fprintf(stderr, "%*sValue:  ", indent, " ");
+
+    switch(XPT_TDP_TAG(cd->type.prefix)) {
+    case TD_INT8:
+        fprintf(stderr, "%d\n", cd->value.i8);
+        break;
+    case TD_INT16:
+        fprintf(stderr, "%d\n", cd->value.i16);
+        break;
+    case TD_INT32:
+        fprintf(stderr, "%d\n", cd->value.i32);
+        break;
+    case TD_INT64:
+        fprintf(stderr, "%d\n", cd->value.i64);
+        break;
+    case TD_UINT8:
+        fprintf(stderr, "%d\n", cd->value.ui8);
+        break;
+    case TD_UINT16:
+        fprintf(stderr, "%d\n", cd->value.ui16);
+        break;
+    case TD_UINT32:
+        fprintf(stderr, "%d\n", cd->value.ui32);
+        break;
+    case TD_UINT64:
+        fprintf(stderr, "%d\n", cd->value.ui64);
+        break;
+    case TD_FLOAT:
+        fprintf(stderr, "%f\n", cd->value.flt);
+        break;
+    case TD_DOUBLE:
+        fprintf(stderr, "%g\n", cd->value.dbl);
+        break;
+    case TD_BOOL:
+        if (cd->value.bul)
+            fprintf(stderr, "TRUE\n");
+        else 
+            fprintf(stderr, "FALSE\n");
+            break;
+    case TD_CHAR:
+        fprintf(stderr, "%d\n", cd->value.ui64);
+        break;
+    case TD_WCHAR:
+        fprintf(stderr, "%d\n", cd->value.ui64);
+        break;
+    case TD_VOID:
+        fprintf(stderr, "VOID\n");
+        break;
+    case TD_PPNSIID:
+        if (XPT_TDP_IS_POINTER(cd->type.prefix.flags)) {
+        fprintf(stderr, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x\n",
+                cd->value.iid->m0, (PRUint32) cd->value.iid->m1,
+                (PRUint32) cd->value.iid->m2,
+                (PRUint32) cd->value.iid->m3[0], 
+                (PRUint32) cd->value.iid->m3[1],
+                (PRUint32) cd->value.iid->m3[2], 
+                (PRUint32) cd->value.iid->m3[3],
+                (PRUint32) cd->value.iid->m3[4], 
+                (PRUint32) cd->value.iid->m3[5],
+                (PRUint32) cd->value.iid->m3[6], 
+                (PRUint32) cd->value.iid->m3[7]);
+        } else 
+            return PR_FALSE;
+        break;
+    case TD_PBSTR:
+        if (XPT_TDP_IS_POINTER(cd->type.prefix.flags)) {
+            if (!XPT_DumpXPTString(cd->value.string))
+                return PR_FALSE;
+            fprintf(stderr, "\n");
+        } else 
+            return PR_FALSE;
+        break;            
+    case TD_PSTRING:
+        if (XPT_TDP_IS_POINTER(cd->type.prefix.flags)) {
+            fprintf(stderr, "%s\n", cd->value.str);
+        } else 
+            return PR_FALSE;
+        break;
+    case TD_PWSTRING:
+        if (XPT_TDP_IS_POINTER(cd->type.prefix.flags)) {
+            fprintf(stderr, "%s\n", cd->value.wstr);
+        } else 
+            return PR_FALSE;
+        break;
+    default:
+        perror("Unrecognized type");
+        return PR_FALSE;
+        break;   
+    }
+
+    return PR_TRUE;
+}
diff --git a/xpcom/typelib/xpt/Makefile.in b/xpcom/typelib/xpt/Makefile.in
index c5e79fd12465..843a38bcce39 100644
--- a/xpcom/typelib/xpt/Makefile.in
+++ b/xpcom/typelib/xpt/Makefile.in
@@ -25,4 +25,6 @@ DIRS	= public src
 
 DIRS    += tests
 
+DIRS	+= tools
+
 include $(topsrcdir)/config/rules.mk
diff --git a/xpcom/typelib/xpt/tests/SimpleTypeLib.c b/xpcom/typelib/xpt/tests/SimpleTypeLib.c
index f0fc94522aba..299e4185c57d 100644
--- a/xpcom/typelib/xpt/tests/SimpleTypeLib.c
+++ b/xpcom/typelib/xpt/tests/SimpleTypeLib.c
@@ -142,7 +142,7 @@ main(int argc, char **argv)
     ok = XPT_DoHeader(cursor, &header);
     TRY("DoHeader", ok);
 
-    /*    out = fopen(argv[1], "w");
+    out = fopen(argv[1], "w");
     if (!out) {
         perror("FAILED: fopen");
         return 1;
@@ -155,351 +155,8 @@ main(int argc, char **argv)
     fwrite(data, len, 1, out);
     fclose(out);
     XPT_DestroyXDRState(state);
-    */
-    fprintf(stderr, "\n'%s' Header:\n", argv[1]);
-    XPT_DumpHeader(header);
 
     /* XXX DestroyHeader */
     return 0;
 }
 
-PRBool
-XPT_DumpHeader(XPTHeader *header) 
-{
-    fprintf(stderr, "%sMagic beans:      %s\n", INDENT, header->magic);
-    fprintf(stderr, "%sMajor version:    %d\n", INDENT, header->major_version);
-    fprintf(stderr, "%sMinor version:    %d\n", INDENT, header->minor_version);
-    fprintf(stderr, "%s# of interfaces:  %d\n", INDENT, 
-            header->num_interfaces);
-    fprintf(stderr, "%sFile length:      %d\n", INDENT, header->file_length);
-    fprintf(stderr, "%sData pool offset: %d\n", INDENT, header->data_pool);
-
-    if (!XPT_DumpAnnotations(header->annotations))
-        return PR_FALSE;
-    
-    if (!XPT_DumpIDEs(header->interface_directory, header->num_interfaces))
-        return PR_FALSE;
-
-    return PR_TRUE;
-}    
-
-PRBool
-XPT_DumpAnnotations(XPTAnnotation *ann) 
-{
-    int i = -1, j = 0;
-    XPTAnnotation *last;
-
-    fprintf(stderr, "\n%sAnnotations:\n", INDENT);
-
-    do {
-        i++;
-        if (XPT_ANN_IS_PRIVATE(ann->flags)) {
-            fprintf(stderr, "%sAnnotation #%d is private.\n", 
-                    DOUBLE_INDENT, i);
-            fprintf(stderr, "%sCreator:      ", TRIPLE_INDENT);
-            if (!XPT_DumpXPTString(ann->creator))
-                return PR_FALSE;
-            fprintf(stderr, "\n");
-            fprintf(stderr, "%sPrivate Data: ", TRIPLE_INDENT);            
-            if (!XPT_DumpXPTString(ann->private_data))
-                return PR_FALSE;
-            fprintf(stderr, "\n");
-        } else {
-            fprintf(stderr, "%sAnnotation #%d is empty.\n", 
-                    DOUBLE_INDENT, i);
-        }
-        last = ann;
-        ann = ann->next;
-    } while (!XPT_ANN_IS_LAST(last->flags));
-        
-    fprintf(stderr, "%sAnnotation #%d is the last annotation.\n", 
-            DOUBLE_INDENT, i);
-    
-    return PR_TRUE;
-}    
-
-PRBool
-XPT_DumpIDEs(XPTInterfaceDirectoryEntry *ide, int num_interfaces)
-{
-    int i;
-    
-    fprintf(stderr, "\n%sInterface Directory:\n", INDENT);
-    for (i=0; i<num_interfaces; i++) {
-        fprintf(stderr, "%sInterface #%d:\n", DOUBLE_INDENT, i);
-        fprintf(stderr, "%sIID:                             "
-                "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x\n",
-                TRIPLE_INDENT,
-                ide->iid.m0, (PRUint32) ide->iid.m1,(PRUint32) ide->iid.m2,
-                (PRUint32) ide->iid.m3[0], (PRUint32) ide->iid.m3[1],
-                (PRUint32) ide->iid.m3[2], (PRUint32) ide->iid.m3[3],
-                (PRUint32) ide->iid.m3[4], (PRUint32) ide->iid.m3[5],
-                (PRUint32) ide->iid.m3[6], (PRUint32) ide->iid.m3[7]);
-
-        fprintf(stderr, "%sName:                            %s\n", 
-                TRIPLE_INDENT, ide->name);
-        fprintf(stderr, "%sNamespace:                       %s\n", 
-                TRIPLE_INDENT, ide->namespace);
-        fprintf(stderr, "%sAddress of interface descriptor: %p\n", 
-                TRIPLE_INDENT, ide->interface_descriptor);
-        if (!XPT_DumpInterfaceDescriptor(ide->interface_descriptor))
-            return PR_FALSE;
-    }
-    return PR_TRUE;
-}    
-
-PRBool
-XPT_DumpInterfaceDescriptor(XPTInterfaceDescriptor *id)
-{
-    int i;
-
-    fprintf(stderr, "%sDescriptor:\n", TRIPLE_INDENT);
-    fprintf(stderr, "%sOffset of parent interface (in data pool): %d\n", 
-            QUAD_INDENT, id->parent_interface);
-    fprintf(stderr, "%s# of Method Descriptors:                   %d\n", 
-            QUAD_INDENT, id->num_methods);
-    for (i=0; i<id->num_methods; i++) {
-        fprintf(stderr, "%sMethod #%d:\n", QUINT_INDENT, i);
-        if (!XPT_DumpMethodDescriptor(&id->method_descriptors[i]))
-            return PR_FALSE;
-    }
-    fprintf(stderr, "%s# of Constant Descriptors:                  %d\n", 
-            QUAD_INDENT, id->num_constants);
-    for (i=0; i<id->num_constants; i++) {
-        fprintf(stderr, "%sConstant #%d:\n", QUINT_INDENT, i);
-        if (!XPT_DumpConstDescriptor(&id->const_descriptors[i]))
-            return PR_FALSE;
-    }
-    
-    return PR_TRUE;
-}
-
-PRBool
-XPT_DumpMethodDescriptor(XPTMethodDescriptor *md)
-{
-    int i;
-
-    fprintf(stderr, "%sName:             %s\n", SEXT_INDENT, md->name);
-    fprintf(stderr, "%sIs Getter?        ", SEXT_INDENT);
-    if (XPT_MD_IS_GETTER(md->flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%sIs Setter?        ", SEXT_INDENT);
-    if (XPT_MD_IS_SETTER(md->flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%sIs Varargs?       ", SEXT_INDENT);
-    if (XPT_MD_IS_VARARGS(md->flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%sIs Constructor?   ", SEXT_INDENT);
-    if (XPT_MD_IS_CTOR(md->flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%sIs Hidden?        ", SEXT_INDENT);
-    if (XPT_MD_IS_HIDDEN(md->flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%s# of arguments:   %d\n", SEXT_INDENT, md->num_args);
-    fprintf(stderr, "%sParameter Descriptors:\n", SEXT_INDENT);
-
-    for (i=0; i<md->num_args; i++) {
-        fprintf(stderr, "%sParameter #%d:\n", SEPT_INDENT, i);
-        
-        if (!XPT_DumpParamDescriptor(&md->params[i]))
-            return PR_FALSE;
-    }
-   
-    fprintf(stderr, "%sResult:\n", SEXT_INDENT);
-    if (!XPT_DumpParamDescriptor(md->result))
-        return PR_FALSE;
-    
-    return PR_TRUE;
-}
-
-PRBool
-XPT_DumpXPTString(XPTString *str)
-{
-    int i;
-    for (i=0; i<str->length; i++) {
-        fprintf(stderr, "%c", str->bytes[i]);
-    }
-    return PR_TRUE;
-}
-
-PRBool
-XPT_DumpParamDescriptor(XPTParamDescriptor *pd)
-{
-    fprintf(stderr, "%sIn Param?   ", OCT_INDENT);
-    if (XPT_PD_IS_IN(pd->flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-    
-    fprintf(stderr, "%sOut Param?  ", OCT_INDENT);
-    if (XPT_PD_IS_OUT(pd->flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-    
-    fprintf(stderr, "%sRetval?     ", OCT_INDENT);
-    if (XPT_PD_IS_RETVAL(pd->flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%sType Descriptor:\n", OCT_INDENT);
-    if (!XPT_DumpTypeDescriptor(&pd->type))
-        return PR_FALSE;
-    
-    return PR_TRUE;
-}
-
-PRBool
-XPT_DumpTypeDescriptor(XPTTypeDescriptor *td)
-{
-    fprintf(stderr, "%sIs Pointer?        ", NONA_INDENT);
-    if (XPT_TDP_IS_POINTER(td->prefix.flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%sIs Unique Pointer? ", NONA_INDENT);
-    if (XPT_TDP_IS_UNIQUE_POINTER(td->prefix.flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%sIs Reference?      ", NONA_INDENT);
-    if (XPT_TDP_IS_REFERENCE(td->prefix.flags))
-        fprintf(stderr, "TRUE\n");
-    else 
-        fprintf(stderr, "FALSE\n");
-
-    fprintf(stderr, "%sTag:               %d\n", NONA_INDENT, 
-            XPT_TDP_TAG(td->prefix));
-    
-    if (XPT_TDP_TAG(td->prefix) == TD_INTERFACE_TYPE) {
-        fprintf(stderr, "%sInterfaceTypeDescriptor:\n", NONA_INDENT); 
-        fprintf(stderr, "%sIndex of IDE:             %d\n", DECA_INDENT, 
-                td->type.interface);
-    }
-
-    if (XPT_TDP_TAG(td->prefix) == TD_INTERFACE_IS_TYPE) {
-        fprintf(stderr, "%sInterfaceTypeDescriptor:\n", NONA_INDENT); 
-        fprintf(stderr, "%sIndex of Method Argument: %d\n", DECA_INDENT, 
-                td->type.argnum);        
-    }
-
-    return PR_TRUE;
-}
-
-PRBool
-XPT_DumpConstDescriptor(XPTConstDescriptor *cd)
-{
-    fprintf(stderr, "%sName:   %s\n", SEXT_INDENT, cd->name);
-    fprintf(stderr, "%sType Descriptor: \n", SEXT_INDENT);
-    if (!XPT_DumpTypeDescriptor(&cd->type))
-        return PR_FALSE;
-    fprintf(stderr, "%sValue:  ", SEXT_INDENT);
-
-    switch(XPT_TDP_TAG(cd->type.prefix)) {
-    case TD_INT8:
-        fprintf(stderr, "%d\n", cd->value.i8);
-        break;
-    case TD_INT16:
-        fprintf(stderr, "%d\n", cd->value.i16);
-        break;
-    case TD_INT32:
-        fprintf(stderr, "%d\n", cd->value.i32);
-        break;
-    case TD_INT64:
-        fprintf(stderr, "%d\n", cd->value.i64);
-        break;
-    case TD_UINT8:
-        fprintf(stderr, "%d\n", cd->value.ui8);
-        break;
-    case TD_UINT16:
-        fprintf(stderr, "%d\n", cd->value.ui16);
-        break;
-    case TD_UINT32:
-        fprintf(stderr, "%d\n", cd->value.ui32);
-        break;
-    case TD_UINT64:
-        fprintf(stderr, "%d\n", cd->value.ui64);
-        break;
-    case TD_FLOAT:
-        fprintf(stderr, "%f\n", cd->value.flt);
-        break;
-    case TD_DOUBLE:
-        fprintf(stderr, "%g\n", cd->value.dbl);
-        break;
-    case TD_BOOL:
-        if (cd->value.bul)
-            fprintf(stderr, "TRUE\n");
-        else 
-            fprintf(stderr, "FALSE\n");
-            break;
-    case TD_CHAR:
-        fprintf(stderr, "%d\n", cd->value.ui64);
-        break;
-    case TD_WCHAR:
-        fprintf(stderr, "%d\n", cd->value.ui64);
-        break;
-    case TD_VOID:
-        fprintf(stderr, "VOID\n");
-        break;
-    case TD_PPNSIID:
-        if (XPT_TDP_IS_POINTER(cd->type.prefix.flags)) {
-        fprintf(stderr, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x\n",
-                cd->value.iid->m0, (PRUint32) cd->value.iid->m1,
-                (PRUint32) cd->value.iid->m2,
-                (PRUint32) cd->value.iid->m3[0], 
-                (PRUint32) cd->value.iid->m3[1],
-                (PRUint32) cd->value.iid->m3[2], 
-                (PRUint32) cd->value.iid->m3[3],
-                (PRUint32) cd->value.iid->m3[4], 
-                (PRUint32) cd->value.iid->m3[5],
-                (PRUint32) cd->value.iid->m3[6], 
-                (PRUint32) cd->value.iid->m3[7]);
-        } else 
-            return PR_FALSE;
-        break;
-    case TD_PBSTR:
-        if (XPT_TDP_IS_POINTER(cd->type.prefix.flags)) {
-            if (!XPT_DumpXPTString(cd->value.string))
-                return PR_FALSE;
-            fprintf(stderr, "\n");
-        } else 
-            return PR_FALSE;
-        break;            
-    case TD_PSTRING:
-        if (XPT_TDP_IS_POINTER(cd->type.prefix.flags)) {
-            fprintf(stderr, "%s\n", cd->value.str);
-        } else 
-            return PR_FALSE;
-        break;
-    case TD_PWSTRING:
-        if (XPT_TDP_IS_POINTER(cd->type.prefix.flags)) {
-            fprintf(stderr, "%s\n", cd->value.wstr);
-        } else 
-            return PR_FALSE;
-        break;
-    default:
-        perror("Unrecognized type");
-        return PR_FALSE;
-        break;   
-    }
-
-    return PR_TRUE;
-}
-
diff --git a/xpcom/typelib/xpt/tools/.cvsignore b/xpcom/typelib/xpt/tools/.cvsignore
new file mode 100644
index 000000000000..f3c7a7c5da68
--- /dev/null
+++ b/xpcom/typelib/xpt/tools/.cvsignore
@@ -0,0 +1 @@
+Makefile
diff --git a/xpcom/typelib/xpt/tools/Makefile.in b/xpcom/typelib/xpt/tools/Makefile.in
new file mode 100644
index 000000000000..17c427e74d52
--- /dev/null
+++ b/xpcom/typelib/xpt/tools/Makefile.in
@@ -0,0 +1,37 @@
+#
+# The contents of this file are subject to the Netscape Public License
+# Version 1.0 (the "NPL"); you may not use this file except in
+# compliance with the NPL.  You may obtain a copy of the NPL at
+# http://www.mozilla.org/NPL/
+#
+# Software distributed under the NPL is distributed on an "AS IS" basis,
+# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+# for the specific language governing rights and limitations under the
+# NPL.
+#
+# The Initial Developer of this code under the NPL is Netscape
+# Communications Corporation.  Portions created by Netscape are
+# Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+# Reserved.
+
+DEPTH		= ../../..
+topsrcdir	= @top_srcdir@
+srcdir		= @srcdir@
+VPATH		= @srcdir@
+
+include $(DEPTH)/config/autoconf.mk
+
+MODULE		= libxpt
+
+SIMPLE_PROGRAMS	= xpt_dump
+
+CSRCS		= xpt_dump.c
+
+LDFLAGS		= 		\
+		  -L$(DIST)/bin \
+		  -lxpt 	\
+		  $(NSPR_LIBS) 	\
+		  $(NULL)
+
+include $(topsrcdir)/config/rules.mk
+
diff --git a/xpcom/typelib/xpt/tools/xpt_dump.c b/xpcom/typelib/xpt/tools/xpt_dump.c
new file mode 100644
index 000000000000..436e8265f717
--- /dev/null
+++ b/xpcom/typelib/xpt/tools/xpt_dump.c
@@ -0,0 +1,454 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+/*
+ * A utility for dumping the contents of a typelib file (.xpt) to screen 
+ */ 
+
+#include "xpt_xdr.h"
+#include <stdio.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#define BASE_INDENT 3
+
+int 
+main(int argc, char **argv)
+{
+    XPTState *state;
+    XPTCursor curs, *cursor = &curs;
+    XPTHeader *header;
+    struct stat file_stat;
+    int flen;
+    char *whole;
+    FILE *in;
+
+    if (argc != 2) {
+        fprintf(stderr, "Usage: %s <filename.xpt>\n"
+                "       Dumps a typelib file to screen.\n", argv[0]);
+        return 1;
+    }
+
+    if (stat(argv[1], &file_stat) != 0) {
+        perror("FAILED: fstat");
+        return 1;
+    }
+    flen = file_stat.st_size;
+
+    in = fopen(argv[1], "r");
+    if (!in) {
+        perror("FAILED: fopen");
+        return 1;
+    }
+
+    whole = malloc(flen);
+    if (!whole) {
+        perror("FAILED: malloc for whole");
+        return 1;
+    }
+
+    if (flen > 0) {
+        fread(whole, flen, 1, in);
+        state = XPT_NewXDRState(XPT_DECODE, whole, flen);
+        if (!XPT_MakeCursor(state, XPT_HEADER, 0, cursor)) {
+            fprintf(stderr, "MakeCursor failed\n");
+            return 1;
+        }
+        if (!XPT_DoHeader(cursor, &header)) {
+            fprintf(stderr, "DoHeader failed\n");
+            return 1;
+        }
+        if (!XPT_DumpHeader(header, BASE_INDENT)) {
+            perror("FAILED: XPT_DumpHeader");
+            return 1;
+        }
+        XPT_DestroyXDRState(state);
+        free(whole);
+    }
+
+    fclose(in);
+
+    return 0;
+}
+
+PRBool
+XPT_DumpHeader(XPTHeader *header, const int indent) 
+{
+    int i;
+    
+    fprintf(stderr, "%*sMagic beans:      ", indent, " ");
+    for (i=0; i<16; i++) {
+        fprintf(stderr, "%02x", header->magic[i]);
+    }
+    fprintf(stderr, "\n");
+    if (strncmp(header->magic, XPT_MAGIC, 16) == 0)
+        fprintf(stderr, "%*s                  PASSED\n", indent, " ");
+    else
+        fprintf(stderr, "%*s                  FAILED\n", indent, " "); 
+    fprintf(stderr, "%*sMajor version:    %d\n", indent, " ",
+            header->major_version);
+    fprintf(stderr, "%*sMinor version:    %d\n", indent, " ",
+            header->minor_version);
+    fprintf(stderr, "%*s# of interfaces:  %d\n", indent, " ",
+            header->num_interfaces);
+    fprintf(stderr, "%*sFile length:      %d\n", indent, " ",
+            header->file_length);
+    fprintf(stderr, "%*sData pool offset: %d\n", indent, " ",
+            header->data_pool);
+
+    fprintf(stderr, "\n%*sAnnotations:\n", indent, " ");
+    if (!XPT_DumpAnnotations(header->annotations, indent*2))
+        return PR_FALSE;
+    
+    fprintf(stderr, "\n%*sInterface Directory:\n", indent, " ");
+    for (i=0; i<header->num_interfaces; i++) {
+        fprintf(stderr, "%*sInterface #%d:\n", indent*2, " ", i);
+
+        if (!XPT_DumpInterfaceDirectoryEntry(header->interface_directory[i],
+                                             indent*3))
+            return PR_FALSE;
+    }
+
+    return PR_TRUE;
+}    
+
+PRBool
+XPT_DumpAnnotations(XPTAnnotation *ann, const int indent) 
+{
+    int i = -1, j = 0;
+    XPTAnnotation *last;
+    int new_indent = indent + BASE_INDENT;
+
+    do {
+        i++;
+        if (XPT_ANN_IS_PRIVATE(ann->flags)) {
+            fprintf(stderr, "%*sAnnotation #%d is private.\n", 
+                    indent, " ", i);
+            fprintf(stderr, "%*sCreator:      ", new_indent, " ");
+            if (!XPT_DumpXPTString(ann->creator))
+                return PR_FALSE;
+            fprintf(stderr, "\n");
+            fprintf(stderr, "%*sPrivate Data: ", new_indent, " ");            
+            if (!XPT_DumpXPTString(ann->private_data))
+                return PR_FALSE;
+            fprintf(stderr, "\n");
+        } else {
+            fprintf(stderr, "%*sAnnotation #%d is empty.\n", 
+                    indent, " ", i);
+        }
+        last = ann;
+        ann = ann->next;
+    } while (!XPT_ANN_IS_LAST(last->flags));
+        
+    fprintf(stderr, "%*sAnnotation #%d is the last annotation.\n", 
+            indent, " ", i);
+    
+    return PR_TRUE;
+}
+
+PRBool
+XPT_DumpInterfaceDirectoryEntry(XPTInterfaceDirectoryEntry *ide, const int indent)
+{
+    int new_indent = indent + BASE_INDENT;
+
+    fprintf(stderr, "%*sIID:                             "
+            "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x\n", indent, " ",
+            (PRUint32) ide->iid.m0, (PRUint32) ide->iid.m1,(PRUint32) ide->iid.m2,
+            (PRUint32) ide->iid.m3[0], (PRUint32) ide->iid.m3[1],
+            (PRUint32) ide->iid.m3[2], (PRUint32) ide->iid.m3[3],
+            (PRUint32) ide->iid.m3[4], (PRUint32) ide->iid.m3[5],
+            (PRUint32) ide->iid.m3[6], (PRUint32) ide->iid.m3[7]);
+    
+    fprintf(stderr, "%*sName:                            %s\n", 
+            indent, " ", ide->name);
+    fprintf(stderr, "%*sNamespace:                       %s\n", 
+            indent, " ", ide->namespace);
+    fprintf(stderr, "%*sAddress of interface descriptor: %p\n", 
+            indent, " ", ide->interface_descriptor);
+
+    fprintf(stderr, "%sDescriptor:\n", indent);
+    if (!XPT_DumpInterfaceDescriptor(ide->interface_descriptor, new_indent))
+        return PR_FALSE;
+
+    return PR_TRUE;
+}    
+
+PRBool
+XPT_DumpInterfaceDescriptor(XPTInterfaceDescriptor *id, int indent)
+{
+    int i;
+    int new_indent = indent + BASE_INDENT;
+    int more_indent = new_indent + BASE_INDENT;
+
+    fprintf(stderr, "%*sOffset of parent interface (in data pool): %d\n", 
+            indent, " ", id->parent_interface);
+    fprintf(stderr, "%*s# of Method Descriptors:                   %d\n", 
+            indent, " ", id->num_methods);
+    for (i=0; i<id->num_methods; i++) {
+        fprintf(stderr, "%*sMethod #%d:\n", new_indent, " ", i);
+        if (!XPT_DumpMethodDescriptor(&id->method_descriptors[i], more_indent))
+            return PR_FALSE;
+    }
+    fprintf(stderr, "%*s# of Constant Descriptors:                  %d\n", 
+            indent, id->num_constants);
+    for (i=0; i<id->num_constants; i++) {
+        fprintf(stderr, "%*sConstant #%d:\n", new_indent, " ", i);
+        if (!XPT_DumpConstDescriptor(&id->const_descriptors[i], more_indent))
+            return PR_FALSE;
+    }
+    
+    return PR_TRUE;
+}
+
+PRBool
+XPT_DumpMethodDescriptor(XPTMethodDescriptor *md, int indent)
+{
+    int i;
+    int new_indent = indent + BASE_INDENT;
+    int more_indent = new_indent + BASE_INDENT;
+
+    fprintf(stderr, "%*sName:             %s\n", indent, " ", md->name);
+    fprintf(stderr, "%*sIs Getter?        ", indent, " ");
+    if (XPT_MD_IS_GETTER(md->flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*sIs Setter?        ", indent, " ");
+    if (XPT_MD_IS_SETTER(md->flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*sIs Varargs?       ", indent, " ");
+    if (XPT_MD_IS_VARARGS(md->flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*sIs Constructor?   ", indent, " ");
+    if (XPT_MD_IS_CTOR(md->flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*sIs Hidden?        ", indent, " ");
+    if (XPT_MD_IS_HIDDEN(md->flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*s# of arguments:   %d\n", indent, " ", md->num_args);
+    fprintf(stderr, "%*sParameter Descriptors:\n", indent, " ");
+
+    for (i=0; i<md->num_args; i++) {
+        fprintf(stderr, "%*sParameter #%d:\n", new_indent, " ", i);
+        
+        if (!XPT_DumpParamDescriptor(&md->params[i], more_indent))
+            return PR_FALSE;
+    }
+   
+    fprintf(stderr, "%*sResult:\n", indent, " ");
+    if (!XPT_DumpParamDescriptor(md->result, new_indent))
+        return PR_FALSE;
+    
+    return PR_TRUE;
+}
+
+PRBool
+XPT_DumpXPTString(XPTString *str)
+{
+    int i;
+    for (i=0; i<str->length; i++) {
+        fprintf(stderr, "%c", str->bytes[i]);
+    }
+    return PR_TRUE;
+}
+
+PRBool
+XPT_DumpParamDescriptor(XPTParamDescriptor *pd, int indent)
+{
+    int new_indent = indent + BASE_INDENT;
+
+    fprintf(stderr, "%*sIn Param?   ", indent, " ");
+    if (XPT_PD_IS_IN(pd->flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+    
+    fprintf(stderr, "%*sOut Param?  ", indent, " ");
+    if (XPT_PD_IS_OUT(pd->flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+    
+    fprintf(stderr, "%*sRetval?     ", indent, " ");
+    if (XPT_PD_IS_RETVAL(pd->flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*sType Descriptor:\n", indent, " ");
+    if (!XPT_DumpTypeDescriptor(&pd->type, new_indent))
+        return PR_FALSE;
+    
+    return PR_TRUE;
+}
+
+PRBool
+XPT_DumpTypeDescriptor(XPTTypeDescriptor *td, int indent)
+{
+    int new_indent = indent + BASE_INDENT;
+
+    fprintf(stderr, "%*sIs Pointer?        ", indent, " ");
+    if (XPT_TDP_IS_POINTER(td->prefix.flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*sIs Unique Pointer? ", indent, " ");
+    if (XPT_TDP_IS_UNIQUE_POINTER(td->prefix.flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*sIs Reference?      ", indent, " ");
+    if (XPT_TDP_IS_REFERENCE(td->prefix.flags))
+        fprintf(stderr, "TRUE\n");
+    else 
+        fprintf(stderr, "FALSE\n");
+
+    fprintf(stderr, "%*sTag:               %d\n", indent, " ", 
+            XPT_TDP_TAG(td->prefix));
+    
+    if (XPT_TDP_TAG(td->prefix) == TD_INTERFACE_TYPE) {
+        fprintf(stderr, "%*sInterfaceTypeDescriptor:\n", indent, " "); 
+        fprintf(stderr, "%*sIndex of IDE:             %d\n", new_indent, " ", 
+                td->type.interface);
+    }
+
+    if (XPT_TDP_TAG(td->prefix) == TD_INTERFACE_IS_TYPE) {
+        fprintf(stderr, "%*sInterfaceTypeDescriptor:\n", indent, " "); 
+        fprintf(stderr, "%*sIndex of Method Argument: %d\n", new_indent, " ", 
+                td->type.argnum);        
+    }
+
+    return PR_TRUE;
+}
+
+PRBool
+XPT_DumpConstDescriptor(XPTConstDescriptor *cd, int indent)
+{
+    int new_indent = indent + BASE_INDENT;
+
+    fprintf(stderr, "%*sName:   %s\n", indent, " ", cd->name);
+    fprintf(stderr, "%*sType Descriptor: \n", " ", indent);
+    if (!XPT_DumpTypeDescriptor(&cd->type, new_indent))
+        return PR_FALSE;
+    fprintf(stderr, "%*sValue:  ", indent, " ");
+
+    switch(XPT_TDP_TAG(cd->type.prefix)) {
+    case TD_INT8:
+        fprintf(stderr, "%d\n", cd->value.i8);
+        break;
+    case TD_INT16:
+        fprintf(stderr, "%d\n", cd->value.i16);
+        break;
+    case TD_INT32:
+        fprintf(stderr, "%d\n", cd->value.i32);
+        break;
+    case TD_INT64:
+        fprintf(stderr, "%d\n", cd->value.i64);
+        break;
+    case TD_UINT8:
+        fprintf(stderr, "%d\n", cd->value.ui8);
+        break;
+    case TD_UINT16:
+        fprintf(stderr, "%d\n", cd->value.ui16);
+        break;
+    case TD_UINT32:
+        fprintf(stderr, "%d\n", cd->value.ui32);
+        break;
+    case TD_UINT64:
+        fprintf(stderr, "%d\n", cd->value.ui64);
+        break;
+    case TD_FLOAT:
+        fprintf(stderr, "%f\n", cd->value.flt);
+        break;
+    case TD_DOUBLE:
+        fprintf(stderr, "%g\n", cd->value.dbl);
+        break;
+    case TD_BOOL:
+        if (cd->value.bul)
+            fprintf(stderr, "TRUE\n");
+        else 
+            fprintf(stderr, "FALSE\n");
+            break;
+    case TD_CHAR:
+        fprintf(stderr, "%d\n", cd->value.ui64);
+        break;
+    case TD_WCHAR:
+        fprintf(stderr, "%d\n", cd->value.ui64);
+        break;
+    case TD_VOID:
+        fprintf(stderr, "VOID\n");
+        break;
+    case TD_PPNSIID:
+        if (XPT_TDP_IS_POINTER(cd->type.prefix.flags)) {
+        fprintf(stderr, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x\n",
+                cd->value.iid->m0, (PRUint32) cd->value.iid->m1,
+                (PRUint32) cd->value.iid->m2,
+                (PRUint32) cd->value.iid->m3[0], 
+                (PRUint32) cd->value.iid->m3[1],
+                (PRUint32) cd->value.iid->m3[2], 
+                (PRUint32) cd->value.iid->m3[3],
+                (PRUint32) cd->value.iid->m3[4], 
+                (PRUint32) cd->value.iid->m3[5],
+                (PRUint32) cd->value.iid->m3[6], 
+                (PRUint32) cd->value.iid->m3[7]);
+        } else 
+            return PR_FALSE;
+        break;
+    case TD_PBSTR:
+        if (XPT_TDP_IS_POINTER(cd->type.prefix.flags)) {
+            if (!XPT_DumpXPTString(cd->value.string))
+                return PR_FALSE;
+            fprintf(stderr, "\n");
+        } else 
+            return PR_FALSE;
+        break;            
+    case TD_PSTRING:
+        if (XPT_TDP_IS_POINTER(cd->type.prefix.flags)) {
+            fprintf(stderr, "%s\n", cd->value.str);
+        } else 
+            return PR_FALSE;
+        break;
+    case TD_PWSTRING:
+        if (XPT_TDP_IS_POINTER(cd->type.prefix.flags)) {
+            fprintf(stderr, "%s\n", cd->value.wstr);
+        } else 
+            return PR_FALSE;
+        break;
+    default:
+        perror("Unrecognized type");
+        return PR_FALSE;
+        break;   
+    }
+
+    return PR_TRUE;
+}