diff --git a/kernel/mips64/sum.S b/kernel/mips64/sum.S
new file mode 100644
index 000000000..261630d49
--- /dev/null
+++ b/kernel/mips64/sum.S
@@ -0,0 +1,332 @@
+/*********************************************************************/
+/* Copyright 2009, 2010 The University of Texas at Austin.           */
+/* All rights reserved.                                              */
+/*                                                                   */
+/* Redistribution and use in source and binary forms, with or        */
+/* without modification, are permitted provided that the following   */
+/* conditions are met:                                               */
+/*                                                                   */
+/*   1. Redistributions of source code must retain the above         */
+/*      copyright notice, this list of conditions and the following  */
+/*      disclaimer.                                                  */
+/*                                                                   */
+/*   2. Redistributions in binary form must reproduce the above      */
+/*      copyright notice, this list of conditions and the following  */
+/*      disclaimer in the documentation and/or other materials       */
+/*      provided with the distribution.                              */
+/*                                                                   */
+/*    THIS  SOFTWARE IS PROVIDED  BY THE  UNIVERSITY OF  TEXAS AT    */
+/*    AUSTIN  ``AS IS''  AND ANY  EXPRESS OR  IMPLIED WARRANTIES,    */
+/*    INCLUDING, BUT  NOT LIMITED  TO, THE IMPLIED  WARRANTIES OF    */
+/*    MERCHANTABILITY  AND FITNESS FOR  A PARTICULAR  PURPOSE ARE    */
+/*    DISCLAIMED.  IN  NO EVENT SHALL THE UNIVERSITY  OF TEXAS AT    */
+/*    AUSTIN OR CONTRIBUTORS BE  LIABLE FOR ANY DIRECT, INDIRECT,    */
+/*    INCIDENTAL,  SPECIAL, EXEMPLARY,  OR  CONSEQUENTIAL DAMAGES    */
+/*    (INCLUDING, BUT  NOT LIMITED TO,  PROCUREMENT OF SUBSTITUTE    */
+/*    GOODS  OR  SERVICES; LOSS  OF  USE,  DATA,  OR PROFITS;  OR    */
+/*    BUSINESS INTERRUPTION) HOWEVER CAUSED  AND ON ANY THEORY OF    */
+/*    LIABILITY, WHETHER  IN CONTRACT, STRICT  LIABILITY, OR TORT    */
+/*    (INCLUDING NEGLIGENCE OR OTHERWISE)  ARISING IN ANY WAY OUT    */
+/*    OF  THE  USE OF  THIS  SOFTWARE,  EVEN  IF ADVISED  OF  THE    */
+/*    POSSIBILITY OF SUCH DAMAGE.                                    */
+/*                                                                   */
+/* The views and conclusions contained in the software and           */
+/* documentation are those of the authors and should not be          */
+/* interpreted as representing official policies, either expressed   */
+/* or implied, of The University of Texas at Austin.                 */
+/*********************************************************************/
+
+#define ASSEMBLER
+#include "common.h"
+
+#define N	$4
+#define	X	$5
+#define INCX	$6
+
+#define I	$2
+#define TEMP	$3
+
+#define a1	$f2
+#define a2	$f3
+#define a3	$f4
+#define a4	$f5
+#define a5	$f6
+#define a6	$f7
+#define a7	$f8
+#define a8	$f9
+
+#define t1	$f10
+#define t2	$f11
+#define t3	$f12
+#define t4	$f13
+
+#define s1	$f0
+#define s2	$f1
+
+	PROLOGUE
+
+#ifdef F_INTERFACE
+	LDINT	N,     0(N)
+	LDINT	INCX,  0(INCX)
+#endif
+
+	MTC	$0,  s1
+
+	MTC	$0,  s2
+	dsll	INCX, INCX, BASE_SHIFT
+
+	blez	N, .L999
+	li	TEMP, SIZE
+
+	bne	INCX, TEMP, .L20
+	dsra	I, N, 3
+
+	blez	I, .L15
+	NOP
+
+	LD	a1,  0 * SIZE(X)
+	LD	a2,  1 * SIZE(X)
+	LD	a3,  2 * SIZE(X)
+	LD	a4,  3 * SIZE(X)
+
+	LD	a5,  4 * SIZE(X)
+	MOV	t1, a1
+	LD	a6,  5 * SIZE(X)
+	MOV	t2, a2
+	LD	a7,  6 * SIZE(X)
+	MOV	t3, a3
+
+	MOV	t4, a4
+	daddiu	I, I, -1
+
+	blez	I, .L13
+	LD	a8,  7 * SIZE(X)
+	.align 3
+
+.L12:
+	ADD	s1, s1, t1
+	LD	a1,  8 * SIZE(X)
+
+	MOV	t1, a5
+	daddiu	I, I, -1
+
+	ADD	s2, s2, t2
+	LD	a2,  9 * SIZE(X)
+
+	MOV	t2, a6
+	NOP
+
+	ADD	s1, s1, t3
+	LD	a3, 10 * SIZE(X)
+
+	MOV	t3, a7
+	NOP
+
+	ADD	s2, s2, t4
+	LD	a4, 11 * SIZE(X)
+
+	MOV	t4, a8
+	daddiu	X, X, 8 * SIZE
+
+	ADD	s1, s1, t1
+	LD	a5,  4 * SIZE(X)
+
+	MOV	t1, a1
+	NOP
+
+	ADD	s2, s2, t2
+	LD	a6,  5 * SIZE(X)
+
+	MOV	t2, a2
+	NOP
+
+	ADD	s1, s1, t3
+	LD	a7,  6 * SIZE(X)
+
+	MOV	t3, a3
+	NOP
+
+	ADD	s2, s2, t4
+	LD	a8,  7 * SIZE(X)
+
+	bgtz	I, .L12
+	MOV	t4, a4
+	.align 3
+
+.L13:
+	ADD	s1, s1, t1
+	daddiu	X, X, 8 * SIZE
+
+	MOV	t1, a5
+	NOP
+
+	ADD	s2, s2, t2
+	MOV	t2, a6
+
+	ADD	s1, s1, t3
+	MOV	t3, a7
+
+	ADD	s2, s2, t4
+	MOV	t4, a8
+
+	ADD	s1, s1, t1
+	ADD	s2, s2, t2
+	ADD	s1, s1, t3
+	ADD	s2, s2, t4
+	.align 3
+
+.L15:
+	andi	I,  N, 7
+
+	blez	I, .L999
+	NOP
+	.align	3
+
+.L16:
+	LD	a1,  0 * SIZE(X)
+	daddiu	I, I, -1
+
+	MOV	t1, a1
+
+	ADD	s1, s1, t1
+
+	bgtz	I, .L16
+	daddiu	X, X, SIZE
+
+	j	.L999
+	NOP
+	.align 3
+
+.L20:
+	blez	I, .L25
+	NOP
+
+	LD	a1,  0 * SIZE(X)
+	daddu	X, X, INCX
+
+	LD	a2,  0 * SIZE(X)
+	daddu	X, X, INCX
+
+	LD	a3,  0 * SIZE(X)
+	daddu	X, X, INCX
+
+	LD	a4,  0 * SIZE(X)
+	daddu	X, X, INCX
+
+	LD	a5,  0 * SIZE(X)
+	daddu	X, X, INCX
+
+	LD	a6,  0 * SIZE(X)
+	daddu	X, X, INCX
+
+	MOV	t1, a1
+	LD	a7,  0 * SIZE(X)
+
+	MOV	t2, a2
+	daddu	X, X, INCX
+
+	MOV	t3, a3
+	LD	a8,  0 * SIZE(X)
+
+	MOV	t4, a4
+	daddiu	I, I, -1
+
+	blez	I, .L24
+	daddu	X, X, INCX
+	.align 3
+
+.L23:
+	ADD	s1, s1, t1
+	LD	a1,  0 * SIZE(X)
+
+	MOV	t1, a5
+	daddu	X, X, INCX
+
+	ADD	s2, s2, t2
+	LD	a2,  0 * SIZE(X)
+
+	MOV	t2, a6
+	daddu	X, X, INCX
+
+	ADD	s1, s1, t3
+	LD	a3,  0 * SIZE(X)
+
+	MOV	t3, a7
+	daddu	X, X, INCX
+
+	ADD	s2, s2, t4
+	LD	a4,  0 * SIZE(X)
+
+	MOV	t4, a8
+	daddu	X, X, INCX
+
+	ADD	s1, s1, t1
+	LD	a5,  0 * SIZE(X)
+
+	MOV	t1, a1
+	daddu	X, X, INCX
+
+	ADD	s2, s2, t2
+	LD	a6,  0 * SIZE(X)
+
+	MOV	t2, a2
+	daddu	X, X, INCX
+
+	ADD	s1, s1, t3
+	LD	a7,  0 * SIZE(X)
+
+	MOV	t3, a3
+	daddu	X, X, INCX
+
+	ADD	s2, s2, t4
+	LD	a8,  0 * SIZE(X)
+
+	MOV	t4, a4
+	daddiu	I, I, -1
+
+	bgtz	I, .L23
+	daddu	X, X, INCX
+	.align 3
+
+.L24:
+	ADD	s1, s1, t1
+	MOV	t1, a5
+
+	ADD	s2, s2, t2
+	MOV	t2, a6
+
+	ADD	s1, s1, t3
+	MOV	t3, a7
+
+	ADD	s2, s2, t4
+	MOV	t4, a8
+
+	ADD	s1, s1, t1
+	ADD	s2, s2, t2
+	ADD	s1, s1, t3
+	ADD	s2, s2, t4
+	.align 3
+
+.L25:
+	andi	I,  N, 7
+
+	blez	I, .L999
+	NOP
+	.align	3
+
+.L26:
+	LD	a1,  0 * SIZE(X)
+	daddiu	I, I, -1
+
+	MOV	t1, a1
+	daddu	X, X, INCX
+
+	bgtz	I, .L26
+	ADD	s1, s1, t1
+	.align 3
+
+.L999:
+	j	$31
+	ADD	s1, s1, s2
+
+	EPILOGUE
diff --git a/kernel/mips64/zsum.S b/kernel/mips64/zsum.S
new file mode 100644
index 000000000..129b97900
--- /dev/null
+++ b/kernel/mips64/zsum.S
@@ -0,0 +1,204 @@
+/*********************************************************************/
+/* Copyright 2009, 2010 The University of Texas at Austin.           */
+/* All rights reserved.                                              */
+/*                                                                   */
+/* Redistribution and use in source and binary forms, with or        */
+/* without modification, are permitted provided that the following   */
+/* conditions are met:                                               */
+/*                                                                   */
+/*   1. Redistributions of source code must retain the above         */
+/*      copyright notice, this list of conditions and the following  */
+/*      disclaimer.                                                  */
+/*                                                                   */
+/*   2. Redistributions in binary form must reproduce the above      */
+/*      copyright notice, this list of conditions and the following  */
+/*      disclaimer in the documentation and/or other materials       */
+/*      provided with the distribution.                              */
+/*                                                                   */
+/*    THIS  SOFTWARE IS PROVIDED  BY THE  UNIVERSITY OF  TEXAS AT    */
+/*    AUSTIN  ``AS IS''  AND ANY  EXPRESS OR  IMPLIED WARRANTIES,    */
+/*    INCLUDING, BUT  NOT LIMITED  TO, THE IMPLIED  WARRANTIES OF    */
+/*    MERCHANTABILITY  AND FITNESS FOR  A PARTICULAR  PURPOSE ARE    */
+/*    DISCLAIMED.  IN  NO EVENT SHALL THE UNIVERSITY  OF TEXAS AT    */
+/*    AUSTIN OR CONTRIBUTORS BE  LIABLE FOR ANY DIRECT, INDIRECT,    */
+/*    INCIDENTAL,  SPECIAL, EXEMPLARY,  OR  CONSEQUENTIAL DAMAGES    */
+/*    (INCLUDING, BUT  NOT LIMITED TO,  PROCUREMENT OF SUBSTITUTE    */
+/*    GOODS  OR  SERVICES; LOSS  OF  USE,  DATA,  OR PROFITS;  OR    */
+/*    BUSINESS INTERRUPTION) HOWEVER CAUSED  AND ON ANY THEORY OF    */
+/*    LIABILITY, WHETHER  IN CONTRACT, STRICT  LIABILITY, OR TORT    */
+/*    (INCLUDING NEGLIGENCE OR OTHERWISE)  ARISING IN ANY WAY OUT    */
+/*    OF  THE  USE OF  THIS  SOFTWARE,  EVEN  IF ADVISED  OF  THE    */
+/*    POSSIBILITY OF SUCH DAMAGE.                                    */
+/*                                                                   */
+/* The views and conclusions contained in the software and           */
+/* documentation are those of the authors and should not be          */
+/* interpreted as representing official policies, either expressed   */
+/* or implied, of The University of Texas at Austin.                 */
+/*********************************************************************/
+
+#define ASSEMBLER
+#include "common.h"
+
+#define N	$4
+#define	X	$5
+#define INCX	$6
+
+#define I	$2
+#define TEMP	$3
+
+#define a1	$f2
+#define a2	$f3
+#define a3	$f4
+#define a4	$f5
+#define a5	$f6
+#define a6	$f7
+#define a7	$f8
+#define a8	$f9
+
+#define t1	$f10
+#define t2	$f11
+#define t3	$f12
+#define t4	$f13
+
+#define s1	$f0
+#define s2	$f1
+
+	PROLOGUE
+
+#ifdef F_INTERFACE
+	LDINT	N,     0(N)
+	LDINT	INCX,  0(INCX)
+#endif
+
+	MTC	$0,  s1
+
+	MTC	$0,  s2
+	dsll	INCX, INCX, ZBASE_SHIFT
+
+	blez	N, .L999
+	dsra	I, N, 2
+
+	blez	I, .L25
+	NOP
+
+	LD	a1,  0 * SIZE(X)
+	LD	a2,  1 * SIZE(X)
+	daddu	X, X, INCX
+
+	LD	a3,  0 * SIZE(X)
+	LD	a4,  1 * SIZE(X)
+	daddu	X, X, INCX
+
+	LD	a5,  0 * SIZE(X)
+	LD	a6,  1 * SIZE(X)
+	daddu	X, X, INCX
+
+	MOV	t1, a1
+	MOV	t2, a2
+
+	LD	a7,  0 * SIZE(X)
+	LD	a8,  1 * SIZE(X)
+
+	MOV	t3, a3
+	MOV	t4, a4
+	daddiu	I, I, -1
+
+	blez	I, .L24
+	daddu	X, X, INCX
+	.align 3
+
+.L23:
+	ADD	s1, s1, t1
+	LD	a1,  0 * SIZE(X)
+
+	MOV	t1, a5
+	daddiu	I, I, -1
+
+	ADD	s2, s2, t2
+	LD	a2,  1 * SIZE(X)
+
+	MOV	t2, a6
+	daddu	X, X, INCX
+
+	ADD	s1, s1, t3
+	LD	a3,  0 * SIZE(X)
+
+	MOV	t3, a7
+	NOP
+
+	ADD	s2, s2, t4
+	LD	a4,  1 * SIZE(X)
+
+	MOV	t4, a8
+	daddu	X, X, INCX
+
+	ADD	s1, s1, t1
+	LD	a5,  0 * SIZE(X)
+
+	MOV	t1, a1
+	NOP
+
+	ADD	s2, s2, t2
+	LD	a6,  1 * SIZE(X)
+
+	MOV	t2, a2
+	daddu	X, X, INCX
+
+	ADD	s1, s1, t3
+	LD	a7,  0 * SIZE(X)
+
+	MOV	t3, a3
+	LD	a8,  1 * SIZE(X)
+
+	ADD	s2, s2, t4
+	daddu	X, X, INCX
+
+	bgtz	I, .L23
+	MOV	t4, a4
+	.align 3
+
+.L24:
+	ADD	s1, s1, t1
+	MOV	t1, a5
+
+	ADD	s2, s2, t2
+	MOV	t2, a6
+
+	ADD	s1, s1, t3
+	MOV	t3, a7
+
+	ADD	s2, s2, t4
+	MOV	t4, a8
+
+	ADD	s1, s1, t1
+	ADD	s2, s2, t2
+	ADD	s1, s1, t3
+	ADD	s2, s2, t4
+	.align 3
+
+.L25:
+	andi	I,  N, 3
+
+	blez	I, .L999
+	NOP
+	.align	3
+
+.L26:
+	LD	a1,  0 * SIZE(X)
+	LD	a2,  1 * SIZE(X)
+
+	MOV	t1, a1
+	daddiu	I, I, -1
+	MOV	t2, a2
+	daddu	X, X, INCX
+
+	ADD	s1, s1, t1
+	bgtz	I, .L26
+	ADD	s2, s2, t2
+	.align 3
+
+.L999:
+	j	$31
+	ADD	s1, s1, s2
+
+	EPILOGUE