8 files changed, 1768 insertions, 0 deletions
diff --git a/sysdeps/alpha/alphaev6/Implies b/sysdeps/alpha/alphaev6/Implies
new file mode 100644
index 0000000000..0e7fc170ba
--- /dev/null
+++ b/sysdeps/alpha/alphaev6/Implies
@@ -0,0 +1 @@
+alpha/alphaev5
diff --git a/sysdeps/alpha/alphaev6/addmul_1.S b/sysdeps/alpha/alphaev6/addmul_1.S
new file mode 100644
index 0000000000..9e56fc87da
--- /dev/null
+++ b/sysdeps/alpha/alphaev6/addmul_1.S
@@ -0,0 +1,477 @@
+ # Alpha ev6 mpn_addmul_1 -- Multiply a limb vector with a limb and add
+ # the result to a second limb vector.
+ #
+ #  Copyright (C) 2000-2014 Free Software Foundation, Inc.
+ #
+ #  This file is part of the GNU MP Library.
+ #
+ #  The GNU MP Library is free software; you can redistribute it and/or modify
+ #  it under the terms of the GNU Lesser General Public License as published
+ #  by the Free Software Foundation; either version 2.1 of the License, or (at
+ #  your option) any later version.
+ #
+ #  The GNU MP Library is distributed in the hope that it will be useful, but
+ #  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ #  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+ #  License for more details.
+ #
+ #  You should have received a copy of the GNU Lesser General Public License
+ #  along with the GNU MP Library.  If not, see <http://www.gnu.org/licenses/>.
+
+ #  INPUT PARAMETERS
+ #  res_ptr	$16
+ #  s1_ptr	$17
+ #  size	$18
+ #  s2_limb	$19
+ #
+ #  This code runs at 42 cycles/limb on EV4, 18 cycles/limb on EV5, and
+ #  exactly 3.625 cycles/limb on EV6...
+ #
+ # This code was written in close cooperation with ev6 pipeline expert
+ # Steve Root (root@toober.hlo.dec.com).  Any errors are tege's fault, though.
+ #
+ #   Register usages for unrolled loop:
+ #	  0-3     mul's
+ #	  4-7     acc's
+ #	  8-15    mul results
+ #	  20,21   carry's
+ #	  22,23   save for stores
+ #
+ #   Sustains 8 mul-adds in 29 cycles in the unrolled inner loop.
+ #
+ #   The stores can issue a cycle late so we have paired no-op's to 'catch'
+ #   them, so that further disturbance to the schedule is damped.
+ #
+ #   We couldn't pair the loads, because the entangled schedule of the
+ #   carry's has to happen on one side {0} of the machine. Note, the total
+ #   use of U0, and the total use of L0 (after attending to the stores).
+ #   which is part of the reason why....
+ #
+ #   This is a great schedule for the d_cache, a poor schedule for the
+ #   b_cache. The lockup on U0 means that any stall can't be recovered
+ #   from. Consider a ldq in L1.  say that load gets stalled because it
+ #   collides with a fill from the b_Cache. On the next cycle, this load
+ #   gets priority. If first looks at L0, and goes there. The instruction
+ #   we intended for L0 gets to look at L1, which is NOT where we want
+ #   it. It either stalls 1, because it can't go in L0, or goes there, and
+ #   causes a further instruction to stall.
+ #
+ #   So for b_cache, we're likely going to want to put one or more cycles
+ #   back into the code! And, of course, put in prefetches. For the
+ #   accumulator, lds, intent to modify.  For the multiplier, you might
+ #   want ldq, evict next, if you're not wanting to use it again soon. Use
+ #   256 ahead of present pointer value. At a place where we have an mt
+ #   followed by a bookkeeping, put the bookkeeping in upper, and the
+ #   prefetch into lower.
+ #
+ #   Note, the usage of physical registers per cycle is smoothed off, as
+ #   much as possible.
+ #
+ #   Note, the ldq's and stq's are at the end of the quadpacks.  note, we'd
+ #   like not to have a ldq or stq to preceded a conditional branch in a
+ #   quadpack. The conditional branch moves the retire pointer one cycle
+ #   later.
+ #
+ #   Optimization notes:
+ #   Callee-saves regs: $9 $10 $11 $12 $13 $14 $15 $26 ?$27?
+ #   Reserved regs:	 $29 $30 $31
+ #   Free caller-saves regs in unrolled code: $24 $25 $28
+ #   We should swap some of the callee-saves regs for some of the free
+ #   caller-saves regs, saving some overhead cycles.
+ #   Most importantly, we should write fast code for the 0-7 case.
+ #   The code we use there are for the 21164, and runs at 7 cycles/limb
+ #   on the 21264.  Should not be hard, if we write specialized code for
+ #   1-7 limbs (the one for 0 limbs should be straightforward).  We then just
+ #   need a jump table indexed by the low 3 bits of the count argument.
+
+	.set	noreorder
+	.set	noat
+	.text
+
+	.globl	__mpn_addmul_1
+	.ent	__mpn_addmul_1
+__mpn_addmul_1:
+	.frame	$30,0,$26,0
+	.prologue 0
+
+	cmpult	$18,	8,	$1
+	beq	$1,	$Large
+
+	ldq	$2,	0($17)		# $2 = s1_limb
+	addq	$17,	8,	$17	# s1_ptr++
+	subq	$18,	1,	$18	# size--
+	mulq	$2,	$19,	$3	# $3 = prod_low
+	ldq	$5,	0($16)		# $5 = *res_ptr
+	umulh	$2,	$19,	$0	# $0 = prod_high
+	beq	$18,	$Lend0b		# jump if size was == 1
+	ldq	$2,	0($17)		# $2 = s1_limb
+	addq	$17,	8,	$17	# s1_ptr++
+	subq	$18,	1,	$18	# size--
+	addq	$5,	$3,	$3
+	cmpult	$3,	$5,	$4
+	stq	$3,	0($16)
+	addq	$16,	8,	$16	# res_ptr++
+	beq	$18,	$Lend0a		# jump if size was == 2
+
+	.align 3
+$Loop0:	mulq	$2,	$19,	$3	# $3 = prod_low
+	ldq	$5,	0($16)		# $5 = *res_ptr
+	addq	$4,	$0,	$0	# cy_limb = cy_limb + 'cy'
+	subq	$18,	1,	$18	# size--
+	umulh	$2,	$19,	$4	# $4 = cy_limb
+	ldq	$2,	0($17)		# $2 = s1_limb
+	addq	$17,	8,	$17	# s1_ptr++
+	addq	$3,	$0,	$3	# $3 = cy_limb + prod_low
+	cmpult	$3,	$0,	$0	# $0 = carry from (cy_limb + prod_low)
+	addq	$5,	$3,	$3
+	cmpult	$3,	$5,	$5
+	stq	$3,	0($16)
+	addq	$16,	8,	$16	# res_ptr++
+	addq	$5,	$0,	$0	# combine carries
+	bne	$18,	$Loop0
+$Lend0a:
+	mulq	$2,	$19,	$3	# $3 = prod_low
+	ldq	$5,	0($16)		# $5 = *res_ptr
+	addq	$4,	$0,	$0	# cy_limb = cy_limb + 'cy'
+	umulh	$2,	$19,	$4	# $4 = cy_limb
+	addq	$3,	$0,	$3	# $3 = cy_limb + prod_low
+	cmpult	$3,	$0,	$0	# $0 = carry from (cy_limb + prod_low)
+	addq	$5,	$3,	$3
+	cmpult	$3,	$5,	$5
+	stq	$3,	0($16)
+	addq	$5,	$0,	$0	# combine carries
+	addq	$4,	$0,	$0	# cy_limb = prod_high + cy
+	ret	$31,	($26),	1
+$Lend0b:
+	addq	$5,	$3,	$3
+	cmpult	$3,	$5,	$5
+	stq	$3,	0($16)
+	addq	$0,	$5,	$0
+	ret	$31,	($26),	1
+
+$Large:
+	lda	$30,	-240($30)
+	stq	$9,	8($30)
+	stq	$10,	16($30)
+	stq	$11,	24($30)
+	stq	$12,	32($30)
+	stq	$13,	40($30)
+	stq	$14,	48($30)
+	stq	$15,	56($30)
+
+	and	$18,	7,	$20	# count for the first loop, 0-7
+	srl	$18,	3,	$18	# count for unrolled loop
+	bis	$31,	$31,	$0
+	beq	$20,	$Lunroll
+	ldq	$2,	0($17)		# $2 = s1_limb
+	addq	$17,	8,	$17	# s1_ptr++
+	subq	$20,	1,	$20	# size--
+	mulq	$2,	$19,	$3	# $3 = prod_low
+	ldq	$5,	0($16)		# $5 = *res_ptr
+	umulh	$2,	$19,	$0	# $0 = prod_high
+	beq	$20,	$Lend1b		# jump if size was == 1
+	ldq	$2,	0($17)		# $2 = s1_limb
+	addq	$17,	8,	$17	# s1_ptr++
+	subq	$20,	1,	$20	# size--
+	addq	$5,	$3,	$3
+	cmpult	$3,	$5,	$4
+	stq	$3,	0($16)
+	addq	$16,	8,	$16	# res_ptr++
+	beq	$20,	$Lend1a		# jump if size was == 2
+
+	.align 3
+$Loop1:	mulq	$2,	$19,	$3	# $3 = prod_low
+	ldq	$5,	0($16)		# $5 = *res_ptr
+	addq	$4,	$0,	$0	# cy_limb = cy_limb + 'cy'
+	subq	$20,	1,	$20	# size--
+	umulh	$2,	$19,	$4	# $4 = cy_limb
+	ldq	$2,	0($17)		# $2 = s1_limb
+	addq	$17,	8,	$17	# s1_ptr++
+	addq	$3,	$0,	$3	# $3 = cy_limb + prod_low
+	cmpult	$3,	$0,	$0	# $0 = carry from (cy_limb + prod_low)
+	addq	$5,	$3,	$3
+	cmpult	$3,	$5,	$5
+	stq	$3,	0($16)
+	addq	$16,	8,	$16	# res_ptr++
+	addq	$5,	$0,	$0	# combine carries
+	bne	$20,	$Loop1
+
+$Lend1a:
+	mulq	$2,	$19,	$3	# $3 = prod_low
+	ldq	$5,	0($16)		# $5 = *res_ptr
+	addq	$4,	$0,	$0	# cy_limb = cy_limb + 'cy'
+	umulh	$2,	$19,	$4	# $4 = cy_limb
+	addq	$3,	$0,	$3	# $3 = cy_limb + prod_low
+	cmpult	$3,	$0,	$0	# $0 = carry from (cy_limb + prod_low)
+	addq	$5,	$3,	$3
+	cmpult	$3,	$5,	$5
+	stq	$3,	0($16)
+	addq	$16,	8,	$16	# res_ptr++
+	addq	$5,	$0,	$0	# combine carries
+	addq	$4,	$0,	$0	# cy_limb = prod_high + cy
+	br	$31,	$Lunroll
+$Lend1b:
+	addq	$5,	$3,	$3
+	cmpult	$3,	$5,	$5
+	stq	$3,	0($16)
+	addq	$16,	8,	$16	# res_ptr++
+	addq	$0,	$5,	$0
+
+$Lunroll:
+	lda	$17,	-16($17)	# L1 bookkeeping
+	lda	$16,	-16($16)	# L1 bookkeeping
+	bis	$0,	$31,	$12
+
+ # ____ UNROLLED LOOP SOFTWARE PIPELINE STARTUP ____
+
+	ldq	$2,	16($17)		# L1
+	ldq	$3,	24($17)		# L1
+	lda	$18,	-1($18)		# L1 bookkeeping
+	ldq	$6,	16($16)		# L1
+	ldq	$7,	24($16)		# L1
+	ldq	$0,	32($17)		# L1
+	mulq	$19,	$2,	$13	# U1
+	ldq	$1,	40($17)		# L1
+	umulh	$19,	$2,	$14	# U1
+	mulq	$19,	$3,	$15	# U1
+	lda	$17,	64($17)		# L1 bookkeeping
+	ldq	$4,	32($16)		# L1
+	ldq	$5,	40($16)		# L1
+	umulh	$19,	$3,	$8	# U1
+	ldq	$2,	-16($17)	# L1
+	mulq	$19,	$0,	$9	# U1
+	ldq	$3,	-8($17)		# L1
+	umulh	$19,	$0,	$10	# U1
+	addq	$6,	$13,	$6	# L0 lo + acc
+	mulq	$19,	$1,	$11	# U1
+	cmpult	$6,	$13,	$20	# L0 lo add => carry
+	lda	$16,	64($16)		# L1 bookkeeping
+	addq	$6,	$12,	$22	# U0 hi add => answer
+	cmpult	$22,	$12,	$21	# L0 hi add => carry
+	addq	$14,	$20,	$14	# U0 hi mul + carry
+	ldq	$6,	-16($16)	# L1
+	addq	$7,	$15,	$23	# L0 lo + acc
+	addq	$14,	$21,	$14	# U0 hi mul + carry
+	ldq	$7,	-8($16)		# L1
+	umulh	$19,	$1,	$12	# U1
+	cmpult	$23,	$15,	$20	# L0 lo add => carry
+	addq	$23,	$14,	$23	# U0 hi add => answer
+	ldq	$0,	0($17)		# L1
+	mulq	$19,	$2,	$13	# U1
+	cmpult	$23,	$14,	$21	# L0 hi add => carry
+	addq	$8,	$20,	$8	# U0 hi mul + carry
+	ldq	$1,	8($17)		# L1
+	umulh	$19,	$2,	$14	# U1
+	addq	$4,	$9,	$4	# L0 lo + acc
+	stq	$22,	-48($16)	# L0
+	stq	$23,	-40($16)	# L1
+	mulq	$19,	$3,	$15	# U1
+	addq	$8,	$21,	$8	# U0 hi mul + carry
+	cmpult	$4,	$9,	$20	# L0 lo add => carry
+	addq	$4,	$8,	$22	# U0 hi add => answer
+	ble	$18,	$Lend		# U1 bookkeeping
+
+ # ____ MAIN UNROLLED LOOP ____
+	.align 4
+$Loop:
+	bis	$31,	$31,	$31	# U1 mt
+	cmpult	$22,	$8,	$21	# L0 hi add => carry
+	addq	$10,	$20,	$10	# U0 hi mul + carry
+	ldq	$4,	0($16)		# L1
+
+	bis	$31,	$31,	$31	# U1 mt
+	addq	$5,	$11,	$23	# L0 lo + acc
+	addq	$10,	$21,	$10	# L0 hi mul + carry
+	ldq	$5,	8($16)		# L1
+
+	umulh	$19,	$3,	$8	# U1
+	cmpult	$23,	$11,	$20	# L0 lo add => carry
+	addq	$23,	$10,	$23	# U0 hi add => answer
+	ldq	$2,	16($17)		# L1
+
+	mulq	$19,	$0,	$9	# U1
+	cmpult	$23,	$10,	$21	# L0 hi add => carry
+	addq	$12,	$20,	$12	# U0 hi mul + carry
+	ldq	$3,	24($17)		# L1
+
+	umulh	$19,	$0,	$10	# U1
+	addq	$6,	$13,	$6	# L0 lo + acc
+	stq	$22,	-32($16)	# L0
+	stq	$23,	-24($16)	# L1
+
+	bis	$31,	$31,	$31	# L0 st slosh
+	mulq	$19,	$1,	$11	# U1
+	bis	$31,	$31,	$31	# L1 st slosh
+	addq	$12,	$21,	$12	# U0 hi mul + carry
+
+	cmpult	$6,	$13,	$20	# L0 lo add => carry
+	bis	$31,	$31,	$31	# U1 mt
+	lda	$18,	-1($18)		# L1 bookkeeping
+	addq	$6,	$12,	$22	# U0 hi add => answer
+
+	bis	$31,	$31,	$31	# U1 mt
+	cmpult	$22,	$12,	$21	# L0 hi add => carry
+	addq	$14,	$20,	$14	# U0 hi mul + carry
+	ldq	$6,	16($16)		# L1
+
+	bis	$31,	$31,	$31	# U1 mt
+	addq	$7,	$15,	$23	# L0 lo + acc
+	addq	$14,	$21,	$14	# U0 hi mul + carry
+	ldq	$7,	24($16)		# L1
+
+	umulh	$19,	$1,	$12	# U1
+	cmpult	$23,	$15,	$20	# L0 lo add => carry
+	addq	$23,	$14,	$23	# U0 hi add => answer
+	ldq	$0,	32($17)		# L1
+
+	mulq	$19,	$2,	$13	# U1
+	cmpult	$23,	$14,	$21	# L0 hi add => carry
+	addq	$8,	$20,	$8	# U0 hi mul + carry
+	ldq	$1,	40($17)		# L1
+
+	umulh	$19,	$2,	$14	# U1
+	addq	$4,	$9,	$4	# U0 lo + acc
+	stq	$22,	-16($16)	# L0
+	stq	$23,	-8($16)		# L1
+
+	bis	$31,	$31,	$31	# L0 st slosh
+	mulq	$19,	$3,	$15	# U1
+	bis	$31,	$31,	$31	# L1 st slosh
+	addq	$8,	$21,	$8	# L0 hi mul + carry
+
+	cmpult	$4,	$9,	$20	# L0 lo add => carry
+	bis	$31,	$31,	$31	# U1 mt
+	lda	$17,	64($17)		# L1 bookkeeping
+	addq	$4,	$8,	$22	# U0 hi add => answer
+
+	bis	$31,	$31,	$31	# U1 mt
+	cmpult	$22,	$8,	$21	# L0 hi add => carry
+	addq	$10,	$20,	$10	# U0 hi mul + carry
+	ldq	$4,	32($16)		# L1
+
+	bis	$31,	$31,	$31	# U1 mt
+	addq	$5,	$11,	$23	# L0 lo + acc
+	addq	$10,	$21,	$10	# L0 hi mul + carry
+	ldq	$5,	40($16)		# L1
+
+	umulh	$19,	$3,	$8	# U1
+	cmpult	$23,	$11,	$20	# L0 lo add => carry
+	addq	$23,	$10,	$23	# U0 hi add => answer
+	ldq	$2,	-16($17)	# L1
+
+	mulq	$19,	$0,	$9	# U1
+	cmpult	$23,	$10,	$21	# L0 hi add => carry
+	addq	$12,	$20,	$12	# U0 hi mul + carry
+	ldq	$3,	-8($17)		# L1
+
+	umulh	$19,	$0,	$10	# U1
+	addq	$6,	$13,	$6	# L0 lo + acc
+	stq	$22,	0($16)		# L0
+	stq	$23,	8($16)		# L1
+
+	bis	$31,	$31,	$31	# L0 st slosh
+	mulq	$19,	$1,	$11	# U1
+	bis	$31,	$31,	$31	# L1 st slosh
+	addq	$12,	$21,	$12	# U0 hi mul + carry
+
+	cmpult	$6,	$13,	$20	# L0 lo add => carry
+	bis	$31,	$31,	$31	# U1 mt
+	lda	$16,	64($16)		# L1 bookkeeping
+	addq	$6,	$12,	$22	# U0 hi add => answer
+
+	bis	$31,	$31,	$31	# U1 mt
+	cmpult	$22,	$12,	$21	# L0 hi add => carry
+	addq	$14,	$20,	$14	# U0 hi mul + carry
+	ldq	$6,	-16($16)	# L1
+
+	bis	$31,	$31,	$31	# U1 mt
+	addq	$7,	$15,	$23	# L0 lo + acc
+	addq	$14,	$21,	$14	# U0 hi mul + carry
+	ldq	$7,	-8($16)		# L1
+
+	umulh	$19,	$1,	$12	# U1
+	cmpult	$23,	$15,	$20	# L0 lo add => carry
+	addq	$23,	$14,	$23	# U0 hi add => answer
+	ldq	$0,	0($17)		# L1
+
+	mulq	$19,	$2,	$13	# U1
+	cmpult	$23,	$14,	$21	# L0 hi add => carry
+	addq	$8,	$20,	$8	# U0 hi mul + carry
+	ldq	$1,	8($17)		# L1
+
+	umulh	$19,	$2,	$14	# U1
+	addq	$4,	$9,	$4	# L0 lo + acc
+	stq	$22,	-48($16)	# L0
+	stq	$23,	-40($16)	# L1
+
+	bis	$31,	$31,	$31	# L0 st slosh
+	mulq	$19,	$3,	$15	# U1
+	bis	$31,	$31,	$31	# L1 st slosh
+	addq	$8,	$21,	$8	# U0 hi mul + carry
+
+	cmpult	$4,	$9,	$20	# L0 lo add => carry
+	addq	$4,	$8,	$22	# U0 hi add => answer
+	bis	$31,	$31,	$31	# L1 mt
+	bgt	$18,	$Loop		# U1 bookkeeping
+
+# ____ UNROLLED LOOP SOFTWARE PIPELINE FINISH ____
+$Lend:
+	cmpult	$22,	$8,	$21	# L0 hi add => carry
+	addq	$10,	$20,	$10	# U0 hi mul + carry
+	ldq	$4,	0($16)		# L1
+	addq	$5,	$11,	$23	# L0 lo + acc
+	addq	$10,	$21,	$10	# L0 hi mul + carry
+	ldq	$5,	8($16)		# L1
+	umulh	$19,	$3,	$8	# U1
+	cmpult	$23,	$11,	$20	# L0 lo add => carry
+	addq	$23,	$10,	$23	# U0 hi add => answer
+	mulq	$19,	$0,	$9	# U1
+	cmpult	$23,	$10,	$21	# L0 hi add => carry
+	addq	$12,	$20,	$12	# U0 hi mul + carry
+	umulh	$19,	$0,	$10	# U1
+	addq	$6,	$13,	$6	# L0 lo + acc
+	stq	$22,	-32($16)	# L0
+	stq	$23,	-24($16)	# L1
+	mulq	$19,	$1,	$11	# U1
+	addq	$12,	$21,	$12	# U0 hi mul + carry
+	cmpult	$6,	$13,	$20	# L0 lo add => carry
+	addq	$6,	$12,	$22	# U0 hi add => answer
+	cmpult	$22,	$12,	$21	# L0 hi add => carry
+	addq	$14,	$20,	$14	# U0 hi mul + carry
+	addq	$7,	$15,	$23	# L0 lo + acc
+	addq	$14,	$21,	$14	# U0 hi mul + carry
+	umulh	$19,	$1,	$12	# U1
+	cmpult	$23,	$15,	$20	# L0 lo add => carry
+	addq	$23,	$14,	$23	# U0 hi add => answer
+	cmpult	$23,	$14,	$21	# L0 hi add => carry
+	addq	$8,	$20,	$8	# U0 hi mul + carry
+	addq	$4,	$9,	$4	# U0 lo + acc
+	stq	$22,	-16($16)	# L0
+	stq	$23,	-8($16)		# L1
+	bis	$31,	$31,	$31	# L0 st slosh
+	addq	$8,	$21,	$8	# L0 hi mul + carry
+	cmpult	$4,	$9,	$20	# L0 lo add => carry
+	addq	$4,	$8,	$22	# U0 hi add => answer
+	cmpult	$22,	$8,	$21	# L0 hi add => carry
+	addq	$10,	$20,	$10	# U0 hi mul + carry
+	addq	$5,	$11,	$23	# L0 lo + acc
+	addq	$10,	$21,	$10	# L0 hi mul + carry
+	cmpult	$23,	$11,	$20	# L0 lo add => carry
+	addq	$23,	$10,	$23	# U0 hi add => answer
+	cmpult	$23,	$10,	$21	# L0 hi add => carry
+	addq	$12,	$20,	$12	# U0 hi mul + carry
+	stq	$22,	0($16)		# L0
+	stq	$23,	8($16)		# L1
+	addq	$12,	$21,	$0	# U0 hi mul + carry
+
+	ldq	$9,	8($30)
+	ldq	$10,	16($30)
+	ldq	$11,	24($30)
+	ldq	$12,	32($30)
+	ldq	$13,	40($30)
+	ldq	$14,	48($30)
+	ldq	$15,	56($30)
+	lda	$30,	240($30)
+	ret	$31,	($26),	1
+
+	.end	__mpn_addmul_1
diff --git a/sysdeps/alpha/alphaev6/fpu/e_sqrt.S b/sysdeps/alpha/alphaev6/fpu/e_sqrt.S
new file mode 100644
index 0000000000..3a3526dd26
--- /dev/null
+++ b/sysdeps/alpha/alphaev6/fpu/e_sqrt.S
@@ -0,0 +1,53 @@
+/* Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+#include <shlib-compat.h>
+
+	.arch ev6
+	.set noreorder
+	.set noat
+
+ENTRY(__ieee754_sqrt)
+#ifdef PROF
+	ldgp    gp, 0(pv)
+	lda     AT, _mcount
+	jsr     AT, (AT), _mcount
+	.prologue 1
+#else
+	.prologue 0
+#endif
+
+	.align 4
+#ifdef _IEEE_FP_INEXACT
+	sqrtt/suid $f16, $f0
+#else
+	sqrtt/sud $f16, $f0
+#endif
+	ret
+	nop
+	nop
+
+END(__ieee754_sqrt)
+
+#if SHLIB_COMPAT (libm, GLIBC_2_15, GLIBC_2_18)
+strong_alias(__ieee754_sqrt, __sqrt_finite1)
+compat_symbol(libm, __sqrt_finite1, __sqrt_finite, GLIBC_2_15)
+versioned_symbol(libm, __ieee754_sqrt, __sqrt_finite, GLIBC_2_18)
+#else
+strong_alias(__ieee754_sqrt, __sqrt_finite)
+#endif
diff --git a/sysdeps/alpha/alphaev6/fpu/e_sqrtf.S b/sysdeps/alpha/alphaev6/fpu/e_sqrtf.S
new file mode 100644
index 0000000000..f5cbc26d36
--- /dev/null
+++ b/sysdeps/alpha/alphaev6/fpu/e_sqrtf.S
@@ -0,0 +1,53 @@
+/* Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+#include <shlib-compat.h>
+
+	.arch ev6
+	.set noreorder
+	.set noat
+
+ENTRY(__ieee754_sqrtf)
+#ifdef PROF
+	ldgp    gp, 0(pv)
+	lda     AT, _mcount
+	jsr     AT, (AT), _mcount
+	.prologue 1
+#else
+	.prologue 0
+#endif
+
+	.align 4
+#ifdef _IEEE_FP_INEXACT
+	sqrts/suid $f16, $f0
+#else
+	sqrts/sud $f16, $f0
+#endif
+	ret
+	nop
+	nop
+
+END(__ieee754_sqrtf)
+
+#if SHLIB_COMPAT (libm, GLIBC_2_15, GLIBC_2_18)
+strong_alias(__ieee754_sqrtf, __sqrtf_finite1)
+compat_symbol(libm, __sqrtf_finite1, __sqrtf_finite, GLIBC_2_15)
+versioned_symbol(libm, __ieee754_sqrtf, __sqrtf_finite, GLIBC_2_18)
+#else
+strong_alias(__ieee754_sqrtf, __sqrtf_finite)
+#endif
diff --git a/sysdeps/alpha/alphaev6/memcpy.S b/sysdeps/alpha/alphaev6/memcpy.S
new file mode 100644
index 0000000000..0208501f1f
--- /dev/null
+++ b/sysdeps/alpha/alphaev6/memcpy.S
@@ -0,0 +1,255 @@
+/* Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   EV6 optimized by Rick Gorton <rick.gorton@alpha-processor.com>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/*
+ * Much of the information about 21264 scheduling/coding comes from:
+ *	Compiler Writer's Guide for the Alpha 21264
+ *	abbreviated as 'CWG' in other comments here
+ *	ftp.digital.com/pub/Digital/info/semiconductor/literature/dsc-library.html
+ * Scheduling notation:
+ *	E	- either cluster
+ *	U	- upper subcluster; U0 - subcluster U0; U1 - subcluster U1
+ *	L	- lower subcluster; L0 - subcluster L0; L1 - subcluster L1
+ *
+ * Temp usage notes:
+ *	$0		- destination address
+ *	$1,$2,		- scratch
+ */
+
+#include <sysdep.h>
+
+	.arch ev6
+	.set noreorder
+	.set noat
+
+ENTRY(memcpy)
+	.prologue 0
+
+	mov	$16, $0			# E : copy dest to return
+	ble	$18, $nomoredata	# U : done with the copy?
+	xor	$16, $17, $1		# E : are source and dest alignments the same?
+	and	$1, 7, $1		# E : are they the same mod 8?
+
+	bne	$1, $misaligned		# U : Nope - gotta do this the slow way
+	/* source and dest are same mod 8 address */
+	and	$16, 7, $1		# E : Are both 0mod8?
+	beq	$1, $both_0mod8		# U : Yes
+	nop				# E :
+
+	/*
+	 * source and dest are same misalignment.  move a byte at a time
+	 * until a 0mod8 alignment for both is reached.
+	 * At least one byte more to move
+	 */
+
+$head_align:
+	ldbu	$1, 0($17)		# L : grab a byte
+	subq	$18, 1, $18		# E : count--
+	addq	$17, 1, $17		# E : src++
+	stb	$1, 0($16)		# L :
+	addq	$16, 1, $16		# E : dest++
+	and	$16, 7, $1		# E : Are we at 0mod8 yet?
+	ble	$18, $nomoredata	# U : done with the copy?
+	bne	$1, $head_align		# U :
+
+$both_0mod8:
+	cmple	$18, 127, $1		# E : Can we unroll the loop?
+	bne	$1, $no_unroll		# U :
+	and	$16, 63, $1		# E : get mod64 alignment
+	beq	$1, $do_unroll		# U : no single quads to fiddle
+
+$single_head_quad:
+	ldq	$1, 0($17)		# L : get 8 bytes
+	subq	$18, 8, $18		# E : count -= 8
+	addq	$17, 8, $17		# E : src += 8
+	nop				# E :
+
+	stq	$1, 0($16)		# L : store
+	addq	$16, 8, $16		# E : dest += 8
+	and	$16, 63, $1		# E : get mod64 alignment
+	bne	$1, $single_head_quad	# U : still not fully aligned
+
+$do_unroll:
+	addq	$16, 64, $7		# E : Initial (+1 trip) wh64 address
+	cmple	$18, 127, $1		# E : Can we go through the unrolled loop?
+	bne	$1, $tail_quads		# U : Nope
+	nop				# E :
+
+$unroll_body:
+	wh64	($7)			# L1 : memory subsystem hint: 64 bytes at
+					# ($7) are about to be over-written
+	ldq	$6, 0($17)		# L0 : bytes 0..7
+	nop				# E :
+	nop				# E :
+
+	ldq	$4, 8($17)		# L : bytes 8..15
+	ldq	$5, 16($17)		# L : bytes 16..23
+	addq	$7, 64, $7		# E : Update next wh64 address
+	nop				# E :
+
+	ldq	$3, 24($17)		# L : bytes 24..31
+	addq	$16, 64, $1		# E : fallback value for wh64
+	nop				# E :
+	nop				# E :
+
+	addq	$17, 32, $17		# E : src += 32 bytes
+	stq	$6, 0($16)		# L : bytes 0..7
+	nop				# E :
+	nop				# E :
+
+	stq	$4, 8($16)		# L : bytes 8..15
+	stq	$5, 16($16)		# L : bytes 16..23
+	subq	$18, 192, $2		# E : At least two more trips to go?
+	nop				# E :
+
+	stq	$3, 24($16)		# L : bytes 24..31
+	addq	$16, 32, $16		# E : dest += 32 bytes
+	nop				# E :
+	nop				# E :
+
+	ldq	$6, 0($17)		# L : bytes 0..7
+	ldq	$4, 8($17)		# L : bytes 8..15
+	cmovlt	$2, $1, $7		# E : Latency 2, extra map slot - Use
+					# fallback wh64 address if < 2 more trips
+	nop				# E :
+
+	ldq	$5, 16($17)		# L : bytes 16..23
+	ldq	$3, 24($17)		# L : bytes 24..31
+	addq	$16, 32, $16		# E : dest += 32
+	subq	$18, 64, $18		# E : count -= 64
+
+	addq	$17, 32, $17		# E : src += 32
+	stq	$6, -32($16)		# L : bytes 0..7
+	stq	$4, -24($16)		# L : bytes 8..15
+	cmple	$18, 63, $1		# E : At least one more trip?
+
+	stq	$5, -16($16)		# L : bytes 16..23
+	stq	$3, -8($16)		# L : bytes 24..31
+	nop				# E :
+	beq	$1, $unroll_body
+
+$tail_quads:
+$no_unroll:
+	.align 4
+	subq	$18, 8, $18		# E : At least a quad left?
+	blt	$18, $less_than_8	# U : Nope
+	nop				# E :
+	nop				# E :
+
+$move_a_quad:
+	ldq	$1, 0($17)		# L : fetch 8
+	subq	$18, 8, $18		# E : count -= 8
+	addq	$17, 8, $17		# E : src += 8
+	nop				# E :
+
+	stq	$1, 0($16)		# L : store 8
+	addq	$16, 8, $16		# E : dest += 8
+	bge	$18, $move_a_quad	# U :
+	nop				# E :
+
+$less_than_8:
+	.align 4
+	addq	$18, 8, $18		# E : add back for trailing bytes
+	ble	$18, $nomoredata	# U : All-done
+	nop				# E :
+	nop				# E :
+
+	/* Trailing bytes */
+$tail_bytes:
+	subq	$18, 1, $18		# E : count--
+	ldbu	$1, 0($17)		# L : fetch a byte
+	addq	$17, 1, $17		# E : src++
+	nop				# E :
+
+	stb	$1, 0($16)		# L : store a byte
+	addq	$16, 1, $16		# E : dest++
+	bgt	$18, $tail_bytes	# U : more to be done?
+	nop				# E :
+
+	/* branching to exit takes 3 extra cycles, so replicate exit here */
+	ret	$31, ($26), 1		# L0 :
+	nop				# E :
+	nop				# E :
+	nop				# E :
+
+$misaligned:
+	mov	$0, $4			# E : dest temp
+	and	$0, 7, $1		# E : dest alignment mod8
+	beq	$1, $dest_0mod8		# U : life doesnt totally suck
+	nop
+
+$aligndest:
+	ble	$18, $nomoredata	# U :
+	ldbu	$1, 0($17)		# L : fetch a byte
+	subq	$18, 1, $18		# E : count--
+	addq	$17, 1, $17		# E : src++
+
+	stb	$1, 0($4)		# L : store it
+	addq	$4, 1, $4		# E : dest++
+	and	$4, 7, $1		# E : dest 0mod8 yet?
+	bne	$1, $aligndest		# U : go until we are aligned.
+
+	/* Source has unknown alignment, but dest is known to be 0mod8 */
+$dest_0mod8:
+	subq	$18, 8, $18		# E : At least a quad left?
+	blt	$18, $misalign_tail	# U : Nope
+	ldq_u	$3, 0($17)		# L : seed (rotating load) of 8 bytes
+	nop				# E :
+
+$mis_quad:
+	ldq_u	$16, 8($17)		# L : Fetch next 8
+	extql	$3, $17, $3		# U : masking
+	extqh	$16, $17, $1		# U : masking
+	bis	$3, $1, $1		# E : merged bytes to store
+
+	subq	$18, 8, $18		# E : count -= 8
+	addq	$17, 8, $17		# E : src += 8
+	stq	$1, 0($4)		# L : store 8 (aligned)
+	mov	$16, $3			# E : "rotate" source data
+
+	addq	$4, 8, $4		# E : dest += 8
+	bge	$18, $mis_quad		# U : More quads to move
+	nop
+	nop
+
+$misalign_tail:
+	addq	$18, 8, $18		# E : account for tail stuff
+	ble	$18, $nomoredata	# U :
+	nop
+	nop
+
+$misalign_byte:
+	ldbu	$1, 0($17)		# L : fetch 1
+	subq	$18, 1, $18		# E : count--
+	addq	$17, 1, $17		# E : src++
+	nop				# E :
+
+	stb	$1, 0($4)		# L : store
+	addq	$4, 1, $4		# E : dest++
+	bgt	$18, $misalign_byte	# U : more to go?
+	nop
+
+
+$nomoredata:
+	ret	$31, ($26), 1		# L0 :
+	nop				# E :
+	nop				# E :
+	nop				# E :
+
+END(memcpy)
+libc_hidden_builtin_def (memcpy)
diff --git a/sysdeps/alpha/alphaev6/memset.S b/sysdeps/alpha/alphaev6/memset.S
new file mode 100644
index 0000000000..bcadd6357d
--- /dev/null
+++ b/sysdeps/alpha/alphaev6/memset.S
@@ -0,0 +1,223 @@
+/* Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   Contributed by Richard Henderson (rth@tamu.edu)
+   EV6 optimized by Rick Gorton <rick.gorton@alpha-processor.com>.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+
+	.arch ev6
+	.set noat
+	.set noreorder
+
+ENTRY(memset)
+#ifdef PROF
+	ldgp	gp, 0(pv)
+	lda	AT, _mcount
+	jsr	AT, (AT), _mcount
+	.prologue 1
+#else
+	.prologue 0
+#endif
+
+	/*
+	 * Serious stalling happens.  The only way to mitigate this is to
+	 * undertake a major re-write to interleave the constant materialization
+	 * with other parts of the fall-through code.  This is important, even
+	 * though it makes maintenance tougher.
+	 * Do this later.
+	 */
+	and	$17, 255, $1	# E : 00000000000000ch
+	insbl	$17, 1, $2	# U : 000000000000ch00
+	mov	$16, $0		# E : return value
+	ble	$18, $end	# U : zero length requested?
+
+	addq	$18, $16, $6	# E : max address to write to
+	or	$1, $2, $17	# E : 000000000000chch
+	insbl	$1, 2, $3	# U : 0000000000ch0000
+	insbl	$1, 3, $4	# U : 00000000ch000000
+
+	or	$3, $4, $3	# E : 00000000chch0000
+	inswl	$17, 4, $5	# U : 0000chch00000000
+	xor	$16, $6, $1	# E : will complete write be within one quadword?
+	inswl	$17, 6, $2	# U : chch000000000000
+
+	or	$17, $3, $17	# E : 00000000chchchch
+	or	$2, $5, $2	# E : chchchch00000000
+	bic	$1, 7, $1	# E : fit within a single quadword?
+	and	$16, 7, $3	# E : Target addr misalignment
+
+	or	$17, $2, $17	# E : chchchchchchchch
+	beq	$1, $within_quad # U :
+	nop			# E :
+	beq	$3, $aligned	# U : target is 0mod8
+
+	/*
+	 * Target address is misaligned, and won't fit within a quadword.
+	 */
+	ldq_u	$4, 0($16)	# L : Fetch first partial
+	mov	$16, $5		# E : Save the address
+	insql	$17, $16, $2	# U : Insert new bytes
+	subq	$3, 8, $3	# E : Invert (for addressing uses)
+
+	addq	$18, $3, $18	# E : $18 is new count ($3 is negative)
+	mskql	$4, $16, $4	# U : clear relevant parts of the quad
+	subq	$16, $3, $16	# E : $16 is new aligned destination
+	or	$2, $4, $1	# E : Final bytes
+
+	nop
+	stq_u	$1,0($5)	# L : Store result
+	nop
+	nop
+
+	.align 4
+$aligned:
+	/*
+	 * We are now guaranteed to be quad aligned, with at least
+	 * one partial quad to write.
+	 */
+
+	sra	$18, 3, $3	# U : Number of remaining quads to write
+	and	$18, 7, $18	# E : Number of trailing bytes to write
+	mov	$16, $5		# E : Save dest address
+	beq	$3, $no_quad	# U : tail stuff only
+
+	/*
+	 * It's worth the effort to unroll this and use wh64 if possible.
+	 * At this point, entry values are:
+	 * $16	Current destination address
+	 * $5	A copy of $16
+	 * $6	The max quadword address to write to
+	 * $18	Number trailer bytes
+	 * $3	Number quads to write
+	 */
+
+	and	$16, 0x3f, $2	# E : Forward work (only useful for unrolled loop)
+	subq	$3, 16, $4	# E : Only try to unroll if > 128 bytes
+	subq	$2, 0x40, $1	# E : bias counter (aligning stuff 0mod64)
+	blt	$4, $loop	# U :
+
+	/*
+	 * We know we've got at least 16 quads, minimum of one trip
+	 * through unrolled loop.  Do a quad at a time to get us 0mod64
+	 * aligned.
+	 */
+
+	nop			# E :
+	nop			# E :
+	nop			# E :
+	beq	$1, $bigalign	# U :
+
+$alignmod64:
+	stq	$17, 0($5)	# L :
+	subq	$3, 1, $3	# E : For consistency later
+	addq	$1, 8, $1	# E : Increment towards zero for alignment
+	addq	$5, 8, $4	# E : Initial wh64 address (filler instruction)
+
+	nop
+	nop
+	addq	$5, 8, $5	# E : Inc address
+	blt	$1, $alignmod64 # U :
+
+$bigalign:
+	/*
+	 * $3 - number quads left to go
+	 * $5 - target address (aligned 0mod64)
+	 * $17 - mask of stuff to store
+	 * Scratch registers available: $7, $2, $4, $1
+	 * We know that we'll be taking a minimum of one trip through.
+	 * CWG Section 3.7.6: do not expect a sustained store rate of > 1/cycle
+	 * Assumes the wh64 needs to be for 2 trips through the loop in the future.
+	 * The wh64 is issued on for the starting destination address for trip +2
+	 * through the loop, and if there are less than two trips left, the target
+	 * address will be for the current trip.
+	 */
+
+$do_wh64:
+	wh64	($4)		# L1 : memory subsystem write hint
+	subq	$3, 24, $2	# E : For determining future wh64 addresses
+	stq	$17, 0($5)	# L :
+	nop			# E :
+
+	addq	$5, 128, $4	# E : speculative target of next wh64
+	stq	$17, 8($5)	# L :
+	stq	$17, 16($5)	# L :
+	addq	$5, 64, $7	# E : Fallback address for wh64 (== next trip addr)
+
+	stq	$17, 24($5)	# L :
+	stq	$17, 32($5)	# L :
+	cmovlt	$2, $7, $4	# E : Latency 2, extra mapping cycle
+	nop
+
+	stq	$17, 40($5)	# L :
+	stq	$17, 48($5)	# L :
+	subq	$3, 16, $2	# E : Repeat the loop at least once more?
+	nop
+
+	stq	$17, 56($5)	# L :
+	addq	$5, 64, $5	# E :
+	subq	$3, 8, $3	# E :
+	bge	$2, $do_wh64	# U :
+
+	nop
+	nop
+	nop
+	beq	$3, $no_quad	# U : Might have finished already
+
+	.align 4
+	/*
+	 * Simple loop for trailing quadwords, or for small amounts
+	 * of data (where we can't use an unrolled loop and wh64)
+	 */
+$loop:
+	stq	$17, 0($5)	# L :
+	subq	$3, 1, $3	# E : Decrement number quads left
+	addq	$5, 8, $5	# E : Inc address
+	bne	$3, $loop	# U : more?
+
+$no_quad:
+	/*
+	 * Write 0..7 trailing bytes.
+	 */
+	nop			# E :
+	beq	$18, $end	# U : All done?
+	ldq	$7, 0($5)	# L :
+	mskqh	$7, $6, $2	# U : Mask final quad
+
+	insqh	$17, $6, $4	# U : New bits
+	or	$2, $4, $1	# E : Put it all together
+	stq	$1, 0($5)	# L : And back to memory
+	ret	$31,($26),1	# L0 :
+
+$within_quad:
+	ldq_u	$1, 0($16)	# L :
+	insql	$17, $16, $2	# U : New bits
+	mskql	$1, $16, $4	# U : Clear old
+	or	$2, $4, $2	# E : New result
+
+	mskql	$2, $6, $4	# U :
+	mskqh	$1, $6, $2	# U :
+	or	$2, $4, $1	# E :
+	stq_u	$1, 0($16)	# L :
+
+$end:
+	nop
+	nop
+	nop
+	ret $31,($26),1		# L0 :
+
+	END(memset)
+libc_hidden_builtin_def (memset)
diff --git a/sysdeps/alpha/alphaev6/stxcpy.S b/sysdeps/alpha/alphaev6/stxcpy.S
new file mode 100644
index 0000000000..6a8b92c70f
--- /dev/null
+++ b/sysdeps/alpha/alphaev6/stxcpy.S
@@ -0,0 +1,314 @@
+/* Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   Contributed by Richard Henderson (rth@tamu.edu)
+   EV6 optimized by Rick Gorton <rick.gorton@alpha-processor.com>.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* Copy a null-terminated string from SRC to DST.
+
+   This is an internal routine used by strcpy, stpcpy, and strcat.
+   As such, it uses special linkage conventions to make implementation
+   of these public functions more efficient.
+
+   On input:
+	t9 = return address
+	a0 = DST
+	a1 = SRC
+
+   On output:
+	t8  = bitmask (with one bit set) indicating the last byte written
+	a0  = unaligned address of the last *word* written
+
+   Furthermore, v0, a3-a5, t11, and t12 are untouched.
+*/
+
+
+#include <sysdep.h>
+
+	.arch ev6
+	.set noat
+	.set noreorder
+
+	.text
+	.type	__stxcpy, @function
+	.globl	__stxcpy
+	.usepv	__stxcpy, no
+
+	cfi_startproc
+	cfi_return_column (t9)
+
+	/* On entry to this basic block:
+	   t0 == the first destination word for masking back in
+	   t1 == the first source word.  */
+	.align 4
+stxcpy_aligned:
+	/* Create the 1st output word and detect 0's in the 1st input word.  */
+	lda	t2, -1		# E : build a mask against false zero
+	mskqh	t2, a1, t2	# U :   detection in the src word (stall)
+	mskqh	t1, a1, t3	# U :
+	ornot	t1, t2, t2	# E : (stall)
+
+	mskql	t0, a1, t0	# U : assemble the first output word
+	cmpbge	zero, t2, t10	# E : bits set iff null found
+	or	t0, t3, t1	# E : (stall)
+	bne	t10, $a_eos	# U : (stall)
+
+	/* On entry to this basic block:
+	   t0 == the first destination word for masking back in
+	   t1 == a source word not containing a null.  */
+	/* Nops here to separate store quads from load quads */
+
+$a_loop:
+	stq_u	t1, 0(a0)	# L :
+	addq	a0, 8, a0	# E :
+	nop
+	nop
+
+	ldq_u	t1, 0(a1)	# L : Latency=3
+	addq	a1, 8, a1	# E :
+	cmpbge	zero, t1, t10	# E : (3 cycle stall)
+	beq	t10, $a_loop	# U : (stall for t10)
+
+	/* Take care of the final (partial) word store.
+	   On entry to this basic block we have:
+	   t1 == the source word containing the null
+	   t10 == the cmpbge mask that found it.  */
+$a_eos:
+	negq	t10, t6		# E : find low bit set
+	and	t10, t6, t8	# E : (stall)
+	/* For the sake of the cache, don't read a destination word
+	   if we're not going to need it.  */
+	and	t8, 0x80, t6	# E : (stall)
+	bne	t6, 1f		# U : (stall)
+
+	/* We're doing a partial word store and so need to combine
+	   our source and original destination words.  */
+	ldq_u	t0, 0(a0)	# L : Latency=3
+	subq	t8, 1, t6	# E :
+	zapnot	t1, t6, t1	# U : clear src bytes >= null (stall)
+	or	t8, t6, t10	# E : (stall)
+
+	zap	t0, t10, t0	# E : clear dst bytes <= null
+	or	t0, t1, t1	# E : (stall)
+	nop
+	nop
+
+1:	stq_u	t1, 0(a0)	# L :
+	ret	(t9)		# L0 : Latency=3
+	nop
+	nop
+
+	.align 4
+__stxcpy:
+	/* Are source and destination co-aligned?  */
+	xor	a0, a1, t0	# E :
+	unop			# E :
+	and	t0, 7, t0	# E : (stall)
+	bne	t0, $unaligned	# U : (stall)
+
+	/* We are co-aligned; take care of a partial first word.  */
+	ldq_u	t1, 0(a1)		# L : load first src word
+	and	a0, 7, t0		# E : take care not to load a word ...
+	addq	a1, 8, a1		# E :
+	beq	t0, stxcpy_aligned	# U : ... if we wont need it (stall)
+
+	ldq_u	t0, 0(a0)	# L :
+	br	stxcpy_aligned	# L0 : Latency=3
+	nop
+	nop
+
+
+/* The source and destination are not co-aligned.  Align the destination
+   and cope.  We have to be very careful about not reading too much and
+   causing a SEGV.  */
+
+	.align 4
+$u_head:
+	/* We know just enough now to be able to assemble the first
+	   full source word.  We can still find a zero at the end of it
+	   that prevents us from outputting the whole thing.
+
+	   On entry to this basic block:
+	   t0 == the first dest word, for masking back in, if needed else 0
+	   t1 == the low bits of the first source word
+	   t6 == bytemask that is -1 in dest word bytes */
+
+	ldq_u	t2, 8(a1)	# L :
+	addq	a1, 8, a1	# E :
+	extql	t1, a1, t1	# U : (stall on a1)
+	extqh	t2, a1, t4	# U : (stall on a1)
+
+	mskql	t0, a0, t0	# U :
+	or	t1, t4, t1	# E :
+	mskqh	t1, a0, t1	# U : (stall on t1)
+	or	t0, t1, t1	# E : (stall on t1)
+
+	or	t1, t6, t6	# E :
+	cmpbge	zero, t6, t10	# E : (stall)
+	lda	t6, -1		# E : for masking just below
+	bne	t10, $u_final	# U : (stall)
+
+	mskql	t6, a1, t6		# U : mask out the bits we have
+	or	t6, t2, t2		# E :   already extracted before (stall)
+	cmpbge	zero, t2, t10		# E :   testing eos (stall)
+	bne	t10, $u_late_head_exit	# U : (stall)
+
+	/* Finally, we've got all the stupid leading edge cases taken care
+	   of and we can set up to enter the main loop.  */
+
+	stq_u	t1, 0(a0)	# L : store first output word
+	addq	a0, 8, a0	# E :
+	extql	t2, a1, t0	# U : position ho-bits of lo word
+	ldq_u	t2, 8(a1)	# U : read next high-order source word
+
+	addq	a1, 8, a1	# E :
+	cmpbge	zero, t2, t10	# E : (stall for t2)
+	nop			# E :
+	bne	t10, $u_eos	# U : (stall)
+
+	/* Unaligned copy main loop.  In order to avoid reading too much,
+	   the loop is structured to detect zeros in aligned source words.
+	   This has, unfortunately, effectively pulled half of a loop
+	   iteration out into the head and half into the tail, but it does
+	   prevent nastiness from accumulating in the very thing we want
+	   to run as fast as possible.
+
+	   On entry to this basic block:
+	   t0 == the shifted high-order bits from the previous source word
+	   t2 == the unshifted current source word
+
+	   We further know that t2 does not contain a null terminator.  */
+
+	.align 3
+$u_loop:
+	extqh	t2, a1, t1	# U : extract high bits for current word
+	addq	a1, 8, a1	# E : (stall)
+	extql	t2, a1, t3	# U : extract low bits for next time (stall)
+	addq	a0, 8, a0	# E :
+
+	or	t0, t1, t1	# E : current dst word now complete
+	ldq_u	t2, 0(a1)	# L : Latency=3 load high word for next time
+	stq_u	t1, -8(a0)	# L : save the current word (stall)
+	mov	t3, t0		# E :
+
+	cmpbge	zero, t2, t10	# E : test new word for eos
+	beq	t10, $u_loop	# U : (stall)
+	nop
+	nop
+
+	/* We've found a zero somewhere in the source word we just read.
+	   If it resides in the lower half, we have one (probably partial)
+	   word to write out, and if it resides in the upper half, we
+	   have one full and one partial word left to write out.
+
+	   On entry to this basic block:
+	   t0 == the shifted high-order bits from the previous source word
+	   t2 == the unshifted current source word.  */
+$u_eos:
+	extqh	t2, a1, t1	# U :
+	or	t0, t1, t1	# E : first (partial) source word complete (stall)
+	cmpbge	zero, t1, t10	# E : is the null in this first bit? (stall)
+	bne	t10, $u_final	# U : (stall)
+
+$u_late_head_exit:
+	stq_u	t1, 0(a0)	# L : the null was in the high-order bits
+	addq	a0, 8, a0	# E :
+	extql	t2, a1, t1	# U :
+	cmpbge	zero, t1, t10	# E : (stall)
+
+	/* Take care of a final (probably partial) result word.
+	   On entry to this basic block:
+	   t1 == assembled source word
+	   t10 == cmpbge mask that found the null.  */
+$u_final:
+	negq	t10, t6		# E : isolate low bit set
+	and	t6, t10, t8	# E : (stall)
+	and	t8, 0x80, t6	# E : avoid dest word load if we can (stall)
+	bne	t6, 1f		# U : (stall)
+
+	ldq_u	t0, 0(a0)	# E :
+	subq	t8, 1, t6	# E :
+	or	t6, t8, t10	# E : (stall)
+	zapnot	t1, t6, t1	# U : kill source bytes >= null (stall)
+
+	zap	t0, t10, t0	# U : kill dest bytes <= null (2 cycle data stall)
+	or	t0, t1, t1	# E : (stall)
+	nop
+	nop
+
+1:	stq_u	t1, 0(a0)	# L :
+	ret	(t9)		# L0 : Latency=3
+	nop
+	nop
+
+	/* Unaligned copy entry point.  */
+	.align 4
+$unaligned:
+
+	ldq_u	t1, 0(a1)	# L : load first source word
+	and	a0, 7, t4	# E : find dest misalignment
+	and	a1, 7, t5	# E : find src misalignment
+	/* Conditionally load the first destination word and a bytemask
+	   with 0xff indicating that the destination byte is sacrosanct.  */
+	mov	zero, t0	# E :
+
+	mov	zero, t6	# E :
+	beq	t4, 1f		# U :
+	ldq_u	t0, 0(a0)	# L :
+	lda	t6, -1		# E :
+
+	mskql	t6, a0, t6	# U :
+	nop
+	nop
+	nop
+1:
+	subq	a1, t4, a1	# E : sub dest misalignment from src addr
+	/* If source misalignment is larger than dest misalignment, we need
+	   extra startup checks to avoid SEGV.  */
+	cmplt	t4, t5, t8	# E :
+	beq	t8, $u_head	# U :
+	lda	t2, -1		# E : mask out leading garbage in source
+
+	mskqh	t2, t5, t2	# U :
+	ornot	t1, t2, t3	# E : (stall)
+	cmpbge	zero, t3, t10	# E : is there a zero? (stall)
+	beq	t10, $u_head	# U : (stall)
+
+	/* At this point we've found a zero in the first partial word of
+	   the source.  We need to isolate the valid source data and mask
+	   it into the original destination data.  (Incidentally, we know
+	   that we'll need at least one byte of that original dest word.) */
+
+	ldq_u	t0, 0(a0)	# L :
+	negq	t10, t6		# E : build bitmask of bytes <= zero
+	and	t6, t10, t8	# E : (stall)
+	and	a1, 7, t5	# E :
+
+	subq	t8, 1, t6	# E :
+	or	t6, t8, t10	# E : (stall)
+	srl	t8, t5, t8	# U : adjust final null return value
+	zapnot	t2, t10, t2	# U : prepare source word; mirror changes (stall)
+
+	and	t1, t2, t1	# E : to source validity mask
+	extql	t2, a1, t2	# U :
+	extql	t1, a1, t1	# U : (stall)
+	andnot	t0, t2, t0	# .. e1 : zero place for source to reside (stall)
+
+	or	t0, t1, t1	# e1    : and put it there
+	stq_u	t1, 0(a0)	# .. e0 : (stall)
+	ret	(t9)		# e1    :
+
+	cfi_endproc
diff --git a/sysdeps/alpha/alphaev6/stxncpy.S b/sysdeps/alpha/alphaev6/stxncpy.S
new file mode 100644
index 0000000000..81522d5d15
--- /dev/null
+++ b/sysdeps/alpha/alphaev6/stxncpy.S
@@ -0,0 +1,392 @@
+/* Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   Contributed by Richard Henderson (rth@tamu.edu)
+   EV6 optimized by Rick Gorton <rick.gorton@alpha-processor.com>.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* Copy no more than COUNT bytes of the null-terminated string from
+   SRC to DST.
+
+   This is an internal routine used by strncpy, stpncpy, and strncat.
+   As such, it uses special linkage conventions to make implementation
+   of these public functions more efficient.
+
+   On input:
+	t9 = return address
+	a0 = DST
+	a1 = SRC
+	a2 = COUNT
+
+   Furthermore, COUNT may not be zero.
+
+   On output:
+	t0  = last word written
+	t8  = bitmask (with one bit set) indicating the last byte written
+	t10 = bitmask (with one bit set) indicating the byte position of
+	      the end of the range specified by COUNT
+	a0  = unaligned address of the last *word* written
+	a2  = the number of full words left in COUNT
+
+   Furthermore, v0, a3-a5, t11, and t12 are untouched.
+*/
+
+#include <sysdep.h>
+
+	.arch ev6
+	.set noat
+	.set noreorder
+
+	.text
+	.type	__stxncpy, @function
+	.globl	__stxncpy
+	.usepv	__stxncpy, no
+
+	cfi_startproc
+	cfi_return_column (t9)
+
+	/* On entry to this basic block:
+	   t0 == the first destination word for masking back in
+	   t1 == the first source word.  */
+	.align 4
+stxncpy_aligned:
+	/* Create the 1st output word and detect 0's in the 1st input word.  */
+	lda	t2, -1		# E : build a mask against false zero
+	mskqh	t2, a1, t2	# U :   detection in the src word (stall)
+	mskqh	t1, a1, t3	# U :
+	ornot	t1, t2, t2	# E : (stall)
+
+	mskql	t0, a1, t0	# U : assemble the first output word
+	cmpbge	zero, t2, t7	# E : bits set iff null found
+	or	t0, t3, t0	# E : (stall)
+	beq	a2, $a_eoc	# U :
+
+	bne	t7, $a_eos	# U :
+	nop
+	nop
+	nop
+
+	/* On entry to this basic block:
+	   t0 == a source word not containing a null.  */
+
+	/*
+	 * nops here to:
+	 *	separate store quads from load quads
+	 *	limit of 1 bcond/quad to permit training
+	 */
+$a_loop:
+	stq_u	t0, 0(a0)	# L :
+	addq	a0, 8, a0	# E :
+	subq	a2, 1, a2	# E :
+	nop
+
+	ldq_u	t0, 0(a1)	# L :
+	addq	a1, 8, a1	# E :
+	cmpbge	zero, t0, t7	# E :
+	beq	a2, $a_eoc      # U :
+
+	beq	t7, $a_loop	# U :
+	nop
+	nop
+	nop
+
+	/* Take care of the final (partial) word store.  At this point
+	   the end-of-count bit is set in t7 iff it applies.
+
+	   On entry to this basic block we have:
+	   t0 == the source word containing the null
+	   t7 == the cmpbge mask that found it.  */
+$a_eos:
+	negq	t7, t8		# E : find low bit set
+	and	t7, t8, t8	# E : (stall)
+	/* For the sake of the cache, don't read a destination word
+	   if we're not going to need it.  */
+	and	t8, 0x80, t6	# E : (stall)
+	bne	t6, 1f		# U : (stall)
+
+	/* We're doing a partial word store and so need to combine
+	   our source and original destination words.  */
+	ldq_u	t1, 0(a0)	# L :
+	subq	t8, 1, t6	# E :
+	or	t8, t6, t7	# E : (stall)
+	zapnot	t0, t7, t0	# U : clear src bytes > null (stall)
+
+	zap	t1, t7, t1	# .. e1 : clear dst bytes <= null
+	or	t0, t1, t0	# e1    : (stall)
+	nop
+	nop
+
+1:	stq_u	t0, 0(a0)	# L :
+	ret	(t9)		# L0 : Latency=3
+	nop
+	nop
+
+	/* Add the end-of-count bit to the eos detection bitmask.  */
+$a_eoc:
+	or	t10, t7, t7	# E :
+	br	$a_eos		# L0 : Latency=3
+	nop
+	nop
+
+	.align 4
+__stxncpy:
+	/* Are source and destination co-aligned?  */
+	lda	t2, -1		# E :
+	xor	a0, a1, t1	# E :
+	and	a0, 7, t0	# E : find dest misalignment
+	nop			# E :
+
+	srl	t2, 1, t2	# U :
+	and	t1, 7, t1	# E :
+	cmovlt	a2, t2, a2	# E : bound count to LONG_MAX (stall)
+	nop			# E :
+
+	addq	a2, t0, a2	# E : bias count by dest misalignment
+	subq	a2, 1, a2	# E : (stall)
+	and	a2, 7, t2	# E : (stall)
+	lda	t10, 1		# E :
+
+	srl	a2, 3, a2	# U : a2 = loop counter = (count - 1)/8
+	sll	t10, t2, t10	# U : t10 = bitmask of last count byte
+	nop			# E :
+	bne	t1, $unaligned	# U : (stall)
+
+	/* We are co-aligned; take care of a partial first word.  */
+	ldq_u	t1, 0(a1)	# L : load first src word
+	addq	a1, 8, a1	# E :
+	beq	t0, stxncpy_aligned # U : avoid loading dest word if not needed
+	ldq_u	t0, 0(a0)	# L :
+
+	br	stxncpy_aligned	# U :
+	nop
+	nop
+	nop
+
+
+
+/* The source and destination are not co-aligned.  Align the destination
+   and cope.  We have to be very careful about not reading too much and
+   causing a SEGV.  */
+
+	.align 4
+$u_head:
+	/* We know just enough now to be able to assemble the first
+	   full source word.  We can still find a zero at the end of it
+	   that prevents us from outputting the whole thing.
+
+	   On entry to this basic block:
+	   t0 == the first dest word, unmasked
+	   t1 == the shifted low bits of the first source word
+	   t6 == bytemask that is -1 in dest word bytes */
+
+	ldq_u	t2, 8(a1)	# L : Latency=3 load second src word
+	addq	a1, 8, a1	# E :
+	mskql	t0, a0, t0	# U : mask trailing garbage in dst
+	extqh	t2, a1, t4	# U : (3 cycle stall on t2)
+
+	or	t1, t4, t1	# E : first aligned src word complete (stall)
+	mskqh	t1, a0, t1	# U : mask leading garbage in src (stall)
+	or	t0, t1, t0	# E : first output word complete (stall)
+	or	t0, t6, t6	# E : mask original data for zero test (stall)
+
+	cmpbge	zero, t6, t7	# E :
+	beq	a2, $u_eocfin	# U :
+	lda	t6, -1		# E :
+	nop
+
+	bne	t7, $u_final	# U :
+	mskql	t6, a1, t6	# U : mask out bits already seen
+	stq_u	t0, 0(a0)	# L : store first output word
+	or      t6, t2, t2	# E :
+
+	cmpbge	zero, t2, t7	# E : find nulls in second partial
+	addq	a0, 8, a0	# E :
+	subq	a2, 1, a2	# E :
+	bne	t7, $u_late_head_exit	# U :
+
+	/* Finally, we've got all the stupid leading edge cases taken care
+	   of and we can set up to enter the main loop.  */
+	extql	t2, a1, t1	# U : position hi-bits of lo word
+	beq	a2, $u_eoc	# U :
+	ldq_u	t2, 8(a1)	# L : read next high-order source word
+	addq	a1, 8, a1	# E :
+
+	extqh	t2, a1, t0	# U : position lo-bits of hi word (stall)
+	cmpbge	zero, t2, t7	# E :
+	nop
+	bne	t7, $u_eos	# U :
+
+	/* Unaligned copy main loop.  In order to avoid reading too much,
+	   the loop is structured to detect zeros in aligned source words.
+	   This has, unfortunately, effectively pulled half of a loop
+	   iteration out into the head and half into the tail, but it does
+	   prevent nastiness from accumulating in the very thing we want
+	   to run as fast as possible.
+
+	   On entry to this basic block:
+	   t0 == the shifted low-order bits from the current source word
+	   t1 == the shifted high-order bits from the previous source word
+	   t2 == the unshifted current source word
+
+	   We further know that t2 does not contain a null terminator.  */
+
+	.align 4
+$u_loop:
+	or	t0, t1, t0	# E : current dst word now complete
+	subq	a2, 1, a2	# E : decrement word count
+	extql	t2, a1, t1	# U : extract high bits for next time
+	addq	a0, 8, a0	# E :
+
+	stq_u	t0, -8(a0)	# L : save the current word
+	beq	a2, $u_eoc	# U :
+	ldq_u	t2, 8(a1)	# L : Latency=3 load high word for next time
+	addq	a1, 8, a1	# E :
+
+	extqh	t2, a1, t0	# U : extract low bits (2 cycle stall)
+	cmpbge	zero, t2, t7	# E : test new word for eos
+	nop
+	beq	t7, $u_loop	# U :
+
+	/* We've found a zero somewhere in the source word we just read.
+	   If it resides in the lower half, we have one (probably partial)
+	   word to write out, and if it resides in the upper half, we
+	   have one full and one partial word left to write out.
+
+	   On entry to this basic block:
+	   t0 == the shifted low-order bits from the current source word
+	   t1 == the shifted high-order bits from the previous source word
+	   t2 == the unshifted current source word.  */
+$u_eos:
+	or	t0, t1, t0	# E : first (partial) source word complete
+	nop
+	cmpbge	zero, t0, t7	# E : is the null in this first bit? (stall)
+	bne	t7, $u_final	# U : (stall)
+
+	stq_u	t0, 0(a0)	# L : the null was in the high-order bits
+	addq	a0, 8, a0	# E :
+	subq	a2, 1, a2	# E :
+	nop
+
+$u_late_head_exit:
+	extql	t2, a1, t0	# U :
+	cmpbge	zero, t0, t7	# E :
+	or	t7, t10, t6	# E : (stall)
+	cmoveq	a2, t6, t7	# E : Latency=2, extra map slot (stall)
+
+	/* Take care of a final (probably partial) result word.
+	   On entry to this basic block:
+	   t0 == assembled source word
+	   t7 == cmpbge mask that found the null.  */
+$u_final:
+	negq	t7, t6		# E : isolate low bit set
+	and	t6, t7, t8	# E : (stall)
+	and	t8, 0x80, t6	# E : avoid dest word load if we can (stall)
+	bne	t6, 1f		# U : (stall)
+
+	ldq_u	t1, 0(a0)	# L :
+	subq	t8, 1, t6	# E :
+	or	t6, t8, t7	# E : (stall)
+	zapnot	t0, t7, t0	# U : kill source bytes > null
+
+	zap	t1, t7, t1	# U : kill dest bytes <= null
+	or	t0, t1, t0	# E : (stall)
+	nop
+	nop
+
+1:	stq_u	t0, 0(a0)	# L :
+	ret	(t9)		# L0 : Latency=3
+
+        /* Got to end-of-count before end of string.
+           On entry to this basic block:
+           t1 == the shifted high-order bits from the previous source word  */
+$u_eoc:
+	and	a1, 7, t6	# E :
+	sll	t10, t6, t6	# U : (stall)
+	and	t6, 0xff, t6	# E : (stall)
+	bne	t6, 1f		# U : (stall)
+
+	ldq_u	t2, 8(a1)	# L : load final src word
+	nop
+	extqh	t2, a1, t0	# U : extract low bits for last word (stall)
+	or	t1, t0, t1	# E : (stall)
+
+1:	cmpbge	zero, t1, t7	# E :
+	mov	t1, t0
+
+$u_eocfin:			# end-of-count, final word
+	or	t10, t7, t7	# E :
+	br	$u_final	# L0 : Latency=3
+
+	/* Unaligned copy entry point.  */
+	.align 4
+$unaligned:
+
+	ldq_u	t1, 0(a1)	# L : load first source word
+	and	a0, 7, t4	# E : find dest misalignment
+	and	a1, 7, t5	# E : find src misalignment
+	/* Conditionally load the first destination word and a bytemask
+	   with 0xff indicating that the destination byte is sacrosanct.  */
+	mov	zero, t0	# E :
+
+	mov	zero, t6	# E :
+	beq	t4, 1f		# U :
+	ldq_u	t0, 0(a0)	# L :
+	lda	t6, -1		# E :
+
+	mskql	t6, a0, t6	# U :
+	nop
+	nop
+1:	subq	a1, t4, a1	# E : sub dest misalignment from src addr
+
+	/* If source misalignment is larger than dest misalignment, we need
+	   extra startup checks to avoid SEGV.  */
+
+	cmplt	t4, t5, t8	# E :
+	extql	t1, a1, t1	# U : shift src into place
+	lda	t2, -1		# E : for creating masks later
+	beq	t8, $u_head	# U : (stall)
+
+	mskqh	t2, t5, t2	# U : begin src byte validity mask
+	cmpbge	zero, t1, t7	# E : is there a zero?
+	extql	t2, a1, t2	# U :
+	or	t7, t10, t5	# E : test for end-of-count too
+
+	cmpbge	zero, t2, t3	# E :
+	cmoveq	a2, t5, t7	# E : Latency=2, extra map slot
+	nop			# E : keep with cmoveq
+	andnot	t7, t3, t7	# E : (stall)
+
+	beq	t7, $u_head	# U :
+	/* At this point we've found a zero in the first partial word of
+	   the source.  We need to isolate the valid source data and mask
+	   it into the original destination data.  (Incidentally, we know
+	   that we'll need at least one byte of that original dest word.) */
+	ldq_u	t0, 0(a0)	# L :
+	negq	t7, t6		# E : build bitmask of bytes <= zero
+	mskqh	t1, t4, t1	# U :
+
+	and	t6, t7, t8	# E :
+	subq	t8, 1, t6	# E : (stall)
+	or	t6, t8, t7	# E : (stall)
+	zapnot	t2, t7, t2	# U : prepare source word; mirror changes (stall)
+
+	zapnot	t1, t7, t1	# U : to source validity mask
+	andnot	t0, t2, t0	# E : zero place for source to reside
+	or	t0, t1, t0	# E : and put it there (stall both t0, t1)
+	stq_u	t0, 0(a0)	# L : (stall)
+
+	ret	(t9)		# L0 : Latency=3
+
+	cfi_endproc