diff --git a/nsprpub/pr/src/md/unix/os_SunOS_32.s b/nsprpub/pr/src/md/unix/os_SunOS_32.s
deleted file mode 100644
index dd8bdd4ba93f..000000000000
--- a/nsprpub/pr/src/md/unix/os_SunOS_32.s
+++ /dev/null
@@ -1,117 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* 
-* The contents of this file are subject to the Mozilla Public
-* License Version 1.1 (the "License"); you may not use this file
-* except in compliance with the License. You may obtain a copy of
-* the License at http://www.mozilla.org/MPL/
-* 
-* Software distributed under the License is distributed on an "AS
-* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
-* implied. See the License for the specific language governing
-* rights and limitations under the License.
-* 
-* The Original Code is the Netscape Portable Runtime (NSPR).
-* 
-* The Initial Developer of the Original Code is Netscape
-* Communications Corporation.  Portions created by Netscape are 
-* Copyright (C) 1998-2000 Netscape Communications Corporation.  All
-* Rights Reserved.
-* 
-* Contributor(s):
-* 
-* Alternatively, the contents of this file may be used under the
-* terms of the GNU General Public License Version 2 or later (the
-* "GPL"), in which case the provisions of the GPL are applicable 
-* instead of those above.  If you wish to allow use of your 
-* version of this file only under the terms of the GPL and not to
-* allow others to use your version of this file under the MPL,
-* indicate your decision by deleting the provisions above and
-* replace them with the notice and other provisions required by
-* the GPL.  If you do not delete the provisions above, a recipient
-* may use your version of this file under either the MPL or the
-* GPL.
-*/ 
-
-!  ======================================================================
-!
-!  Atomically add a new element to the top of the stack
-!
-!  usage : PR_StackPush(listp, elementp);
-!
-!  -----------------------
-!  Note on REGISTER USAGE:
-!  as this is a LEAF procedure, a new stack frame is not created.
-!
-!  So, the registers used are:
-!     %o0  [input]   - the address of the stack
-!     %o1  [input]   - the address of the element to be added to the stack
-!  -----------------------
-
-		.section	".text"
-		.global		PR_StackPush
-
-PR_StackPush:
-
-pulock:	ld		[%o0],%o3				! 
-		cmp		%o3,-1					! check if stack is locked
-		be		pulock					! loop, if locked
-		mov		-1,%o3					! use delay-slot
-		swap	[%o0],%o3				! atomically lock the stack and get
-										! the pointer to stack head
-		cmp		%o3,-1					! check, if the stack is locked
-		be		pulock					! loop, if so
-		nop
-		st		%o3,[%o1]
-		retl                           	! return back to the caller
-		st		%o1,[%o0]				! 
-
-		.size	PR_StackPush,(.-PR_StackPush)
-
-
-!  end
-!  ======================================================================
-
-!  ======================================================================
-!
-!  Atomically remove the element at the top of the stack
-!
-!  usage : elemep = PR_StackPop(listp);
-!
-!  -----------------------
-!  Note on REGISTER USAGE:
-!  as this is a LEAF procedure, a new stack frame is not created.
-!
-!  So, the registers used are:
-!     %o0  [input]   - the address of the stack
-!     %o1  [input]   - work register (top element)
-!  -----------------------
-
-		.section	".text"
-		.global		PR_StackPop
-
-PR_StackPop:
-
-polock:	ld		[%o0],%o1				! 
-		cmp		%o1,-1					! check if stack is locked
-		be		polock					! loop, if locked
-		mov		-1,%o1					! use delay-slot
-		swap	[%o0],%o1				! atomically lock the stack and get
-										! the pointer to stack head
-		cmp		%o1,-1					! check, if the stack is locked
-		be		polock					! loop, if so
-		nop
-		tst		%o1						! test for empty stack
-		be,a	empty					! is empty
-		st		%g0,[%o0]
-		ld		[%o1], %o2				! load the second element
-		st		%o2,[%o0]				! set stack head to second
-		st		%g0,[%o1]				! reset the next pointer; for
-										! debugging
-empty:
-        retl                            ! return back to the caller
-		mov		%o1, %o0				! return the first element
-
-		.size	PR_StackPop,(.-PR_StackPop)
-
-!  end
-!  ======================================================================