[ceph.git] / ceph / src / erasure-code / isa / isa-l / erasure_code / gf_5vect_dot_prod_sse.asm.s

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;  Copyright(c) 2011-2015 Intel Corporation All rights reserved.
;
;  Redistribution and use in source and binary forms, with or without
;  modification, are permitted provided that the following conditions
;  are met:
;    * Redistributions of source code must retain the above copyright
;      notice, this list of conditions and the following disclaimer.
;    * 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.
;    * Neither the name of Intel Corporation nor the names of its
;      contributors may be used to endorse or promote products derived
;      from this software without specific prior written permission.
;
;  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
;  "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 COPYRIGHT
;  OWNER 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.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;;;
;;; gf_5vect_dot_prod_sse(len, vec, *g_tbls, **buffs, **dests);
;;;

%include "reg_sizes.asm"

%ifidn __OUTPUT_FORMAT__, elf64
 %define arg0  rdi
 %define arg1  rsi
 %define arg2  rdx
 %define arg3  rcx
 %define arg4  r8
 %define arg5  r9

 %define tmp   r11
 %define tmp2  r10
 %define tmp3  r13		; must be saved and restored
 %define tmp4  r12		; must be saved and restored
 %define tmp5  r14		; must be saved and restored
 %define tmp6  r15		; must be saved and restored
 %define return rax
 %define PS 8
 %define LOG_PS 3

 %define func(x) x:
 %macro FUNC_SAVE 0
	push	r12
	push	r13
	push	r14
	push	r15
 %endmacro
 %macro FUNC_RESTORE 0
	pop	r15
	pop	r14
	pop	r13
	pop	r12
 %endmacro
%endif

%ifidn __OUTPUT_FORMAT__, win64
 %define arg0   rcx
 %define arg1   rdx
 %define arg2   r8
 %define arg3   r9

 %define arg4   r12 		; must be saved, loaded and restored
 %define arg5   r15 		; must be saved and restored
 %define tmp    r11
 %define tmp2   r10
 %define tmp3   r13		; must be saved and restored
 %define tmp4   r14		; must be saved and restored
 %define tmp5   rdi		; must be saved and restored
 %define tmp6   rsi		; must be saved and restored
 %define return rax
 %define PS     8
 %define LOG_PS 3
 %define stack_size  10*16 + 7*8		; must be an odd multiple of 8
 %define arg(x)      [rsp + stack_size + PS + PS*x]

 %define func(x) proc_frame x
 %macro FUNC_SAVE 0
	alloc_stack	stack_size
	save_xmm128	xmm6, 0*16
	save_xmm128	xmm7, 1*16
	save_xmm128	xmm8, 2*16
	save_xmm128	xmm9, 3*16
	save_xmm128	xmm10, 4*16
	save_xmm128	xmm11, 5*16
	save_xmm128	xmm12, 6*16
	save_xmm128	xmm13, 7*16
	save_xmm128	xmm14, 8*16
	save_xmm128	xmm15, 9*16
	save_reg	r12,  10*16 + 0*8
	save_reg	r13,  10*16 + 1*8
	save_reg	r14,  10*16 + 2*8
	save_reg	r15,  10*16 + 3*8
	save_reg	rdi,  10*16 + 4*8
	save_reg	rsi,  10*16 + 5*8
	end_prolog
	mov	arg4, arg(4)
 %endmacro

 %macro FUNC_RESTORE 0
	movdqa	xmm6, [rsp + 0*16]
	movdqa	xmm7, [rsp + 1*16]
	movdqa	xmm8, [rsp + 2*16]
	movdqa	xmm9, [rsp + 3*16]
	movdqa	xmm10, [rsp + 4*16]
	movdqa	xmm11, [rsp + 5*16]
	movdqa	xmm12, [rsp + 6*16]
	movdqa	xmm13, [rsp + 7*16]
	movdqa	xmm14, [rsp + 8*16]
	movdqa	xmm15, [rsp + 9*16]
	mov	r12,  [rsp + 10*16 + 0*8]
	mov	r13,  [rsp + 10*16 + 1*8]
	mov	r14,  [rsp + 10*16 + 2*8]
	mov	r15,  [rsp + 10*16 + 3*8]
	mov	rdi,  [rsp + 10*16 + 4*8]
	mov	rsi,  [rsp + 10*16 + 5*8]
	add	rsp, stack_size
 %endmacro
%endif

%define len    arg0
%define vec    arg1
%define mul_array arg2
%define	src    arg3
%define dest   arg4
%define ptr    arg5
%define vec_i  tmp2
%define dest1  tmp3
%define dest2  tmp4
%define vskip1 tmp5
%define vskip3 tmp6
%define pos    return


%ifndef EC_ALIGNED_ADDR
;;; Use Un-aligned load/store
 %define XLDR movdqu
 %define XSTR movdqu
%else
;;; Use Non-temporal load/stor
 %ifdef NO_NT_LDST
  %define XLDR movdqa
  %define XSTR movdqa
 %else
  %define XLDR movntdqa
  %define XSTR movntdq
 %endif
%endif

default rel

[bits 64]
section .text

%define xmask0f   xmm15
%define xgft1_lo  xmm2
%define xgft1_hi  xmm3
%define xgft2_lo  xmm4
%define xgft2_hi  xmm5
%define xgft3_lo  xmm10
%define xgft3_hi  xmm6
%define xgft4_lo  xmm8
%define xgft4_hi  xmm7


%define x0     xmm0
%define xtmpa  xmm1
%define xp1    xmm9
%define xp2    xmm11
%define xp3    xmm12
%define xp4    xmm13
%define xp5    xmm14

align 16
global gf_5vect_dot_prod_sse:function
func(gf_5vect_dot_prod_sse)
	FUNC_SAVE
	sub	len, 16
	jl	.return_fail
	xor	pos, pos
	movdqa	xmask0f, [mask0f]	;Load mask of lower nibble in each byte
	mov	vskip1, vec
	imul	vskip1, 32
	mov	vskip3, vec
	imul	vskip3, 96
	sal	vec, LOG_PS		;vec *= PS. Make vec_i count by PS
	mov	dest1, [dest]
	mov	dest2, [dest+PS]


.loop16:
	mov	tmp, mul_array
	xor	vec_i, vec_i
	pxor	xp1, xp1
	pxor	xp2, xp2
	pxor	xp3, xp3
	pxor	xp4, xp4
	pxor	xp5, xp5


.next_vect:
	mov	ptr, [src+vec_i]
	add	vec_i, PS
	XLDR	x0, [ptr+pos]		;Get next source vector

	movdqu	xgft1_lo, [tmp]			;Load array Ax{00}, Ax{01}, ..., Ax{0f}
	movdqu	xgft1_hi, [tmp+16]		;     "     Ax{00}, Ax{10}, ..., Ax{f0}
	movdqu	xgft2_lo, [tmp+vskip1*1]	;Load array Bx{00}, Bx{01}, ..., Bx{0f}
	movdqu	xgft2_hi, [tmp+vskip1*1+16]	;     "     Bx{00}, Bx{10}, ..., Bx{f0}
	movdqu	xgft3_lo, [tmp+vskip1*2]	;Load array Cx{00}, Cx{01}, ..., Cx{0f}
	movdqu	xgft3_hi, [tmp+vskip1*2+16]	;     "     Cx{00}, Cx{10}, ..., Cx{f0}
	movdqu	xgft4_lo, [tmp+vskip3]		;Load array Dx{00}, Dx{01}, ..., Dx{0f}
	movdqu	xgft4_hi, [tmp+vskip3+16]	;     "     Dx{00}, Dx{10}, ..., Dx{f0}

	movdqa	xtmpa, x0		;Keep unshifted copy of src
	psraw	x0, 4			;Shift to put high nibble into bits 4-0
	pand	x0, xmask0f		;Mask high src nibble in bits 4-0
	pand	xtmpa, xmask0f		;Mask low src nibble in bits 4-0

	pshufb	xgft1_hi, x0		;Lookup mul table of high nibble
	pshufb	xgft1_lo, xtmpa		;Lookup mul table of low nibble
	pxor	xgft1_hi, xgft1_lo	;GF add high and low partials
	pxor	xp1, xgft1_hi		;xp1 += partial

	pshufb	xgft2_hi, x0		;Lookup mul table of high nibble
	pshufb	xgft2_lo, xtmpa		;Lookup mul table of low nibble
	pxor	xgft2_hi, xgft2_lo	;GF add high and low partials
	pxor	xp2, xgft2_hi		;xp2 += partial

	movdqu	xgft1_lo, [tmp+vskip1*4]	;Load array Ex{00}, Ex{01}, ..., Ex{0f}
	movdqu	xgft1_hi, [tmp+vskip1*4+16]	;     "     Ex{00}, Ex{10}, ..., Ex{f0}
	add	tmp, 32

	pshufb	xgft3_hi, x0		;Lookup mul table of high nibble
	pshufb	xgft3_lo, xtmpa		;Lookup mul table of low nibble
	pxor	xgft3_hi, xgft3_lo	;GF add high and low partials
	pxor	xp3, xgft3_hi		;xp3 += partial

	pshufb	xgft4_hi, x0		;Lookup mul table of high nibble
	pshufb	xgft4_lo, xtmpa		;Lookup mul table of low nibble
	pxor	xgft4_hi, xgft4_lo	;GF add high and low partials
	pxor	xp4, xgft4_hi		;xp4 += partial

	pshufb	xgft1_hi, x0		;Lookup mul table of high nibble
	pshufb	xgft1_lo, xtmpa		;Lookup mul table of low nibble
	pxor	xgft1_hi, xgft1_lo	;GF add high and low partials
	pxor	xp5, xgft1_hi		;xp5 += partial

	cmp	vec_i, vec
	jl	.next_vect

	mov	tmp, [dest+2*PS]
	mov	ptr, [dest+3*PS]
	mov	vec_i, [dest+4*PS]

	XSTR	[dest1+pos], xp1
	XSTR	[dest2+pos], xp2
	XSTR	[tmp+pos], xp3
	XSTR	[ptr+pos], xp4
	XSTR	[vec_i+pos], xp5

	add	pos, 16			;Loop on 16 bytes at a time
	cmp	pos, len
	jle	.loop16

	lea	tmp, [len + 16]
	cmp	pos, tmp
	je	.return_pass

	;; Tail len
	mov	pos, len	;Overlapped offset length-16
	jmp	.loop16		;Do one more overlap pass

.return_pass:
	FUNC_RESTORE
	mov	return, 0
	ret

.return_fail:
	FUNC_RESTORE
	mov	return, 1
	ret

endproc_frame

section .data

align 16
mask0f:	ddq 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f

;;;       func                  core, ver, snum
slversion gf_5vect_dot_prod_sse, 00,  05,  0065
Commit	Line	Data
7c673cae FG	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
	2	; Copyright(c) 2011-2015 Intel Corporation All rights reserved.
	3	;
	4	; Redistribution and use in source and binary forms, with or without
	5	; modification, are permitted provided that the following conditions
	6	; are met:
	7	; * Redistributions of source code must retain the above copyright
	8	; notice, this list of conditions and the following disclaimer.
	9	; * Redistributions in binary form must reproduce the above copyright
	10	; notice, this list of conditions and the following disclaimer in
	11	; the documentation and/or other materials provided with the
	12	; distribution.
	13	; * Neither the name of Intel Corporation nor the names of its
	14	; contributors may be used to endorse or promote products derived
	15	; from this software without specific prior written permission.
	16	;
	17	; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	18	; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	19	; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	20	; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	21	; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	22	; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	23	; LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	24	; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	25	; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	26	; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	27	; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	28	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
	29
	30	;;;
	31	;;; gf_5vect_dot_prod_sse(len, vec, g_tbls, buffs, *dests);
	32	;;;
	33
	34	%include "reg_sizes.asm"
	35
	36	%ifidn __OUTPUT_FORMAT__, elf64
	37	%define arg0 rdi
	38	%define arg1 rsi
	39	%define arg2 rdx
	40	%define arg3 rcx
	41	%define arg4 r8
	42	%define arg5 r9
	43
	44	%define tmp r11
	45	%define tmp2 r10
	46	%define tmp3 r13 ; must be saved and restored
	47	%define tmp4 r12 ; must be saved and restored
	48	%define tmp5 r14 ; must be saved and restored
	49	%define tmp6 r15 ; must be saved and restored
	50	%define return rax
	51	%define PS 8
	52	%define LOG_PS 3
	53
	54	%define func(x) x:
	55	%macro FUNC_SAVE 0
	56	push r12
	57	push r13
	58	push r14
	59	push r15
	60	%endmacro
	61	%macro FUNC_RESTORE 0
	62	pop r15
	63	pop r14
	64	pop r13
65	pop r12
66	%endmacro
67	%endif
68
69	%ifidn __OUTPUT_FORMAT__, win64
70	%define arg0 rcx
71	%define arg1 rdx
72	%define arg2 r8
73	%define arg3 r9
74
75	%define arg4 r12 ; must be saved, loaded and restored
76	%define arg5 r15 ; must be saved and restored
77	%define tmp r11
78	%define tmp2 r10
79	%define tmp3 r13 ; must be saved and restored
80	%define tmp4 r14 ; must be saved and restored
81	%define tmp5 rdi ; must be saved and restored
82	%define tmp6 rsi ; must be saved and restored
83	%define return rax
84	%define PS 8
85	%define LOG_PS 3
86	%define stack_size 1016 + 78 ; must be an odd multiple of 8
87	%define arg(x) [rsp + stack_size + PS + PS*x]
88
89	%define func(x) proc_frame x
90	%macro FUNC_SAVE 0
91	alloc_stack stack_size
92	save_xmm128 xmm6, 0*16
93	save_xmm128 xmm7, 1*16
94	save_xmm128 xmm8, 2*16
95	save_xmm128 xmm9, 3*16
96	save_xmm128 xmm10, 4*16
97	save_xmm128 xmm11, 5*16
98	save_xmm128 xmm12, 6*16
99	save_xmm128 xmm13, 7*16
100	save_xmm128 xmm14, 8*16
101	save_xmm128 xmm15, 9*16
102	save_reg r12, 1016 + 08
103	save_reg r13, 1016 + 18
104	save_reg r14, 1016 + 28
105	save_reg r15, 1016 + 38
106	save_reg rdi, 1016 + 48
107	save_reg rsi, 1016 + 58
108	end_prolog
109	mov arg4, arg(4)
110	%endmacro
111
112	%macro FUNC_RESTORE 0
113	movdqa xmm6, [rsp + 0*16]
114	movdqa xmm7, [rsp + 1*16]
115	movdqa xmm8, [rsp + 2*16]
116	movdqa xmm9, [rsp + 3*16]
117	movdqa xmm10, [rsp + 4*16]
118	movdqa xmm11, [rsp + 5*16]
119	movdqa xmm12, [rsp + 6*16]
120	movdqa xmm13, [rsp + 7*16]
121	movdqa xmm14, [rsp + 8*16]
122	movdqa xmm15, [rsp + 9*16]
123	mov r12, [rsp + 1016 + 08]
124	mov r13, [rsp + 1016 + 18]
125	mov r14, [rsp + 1016 + 28]
126	mov r15, [rsp + 1016 + 38]
127	mov rdi, [rsp + 1016 + 48]
128	mov rsi, [rsp + 1016 + 58]
129	add rsp, stack_size
130	%endmacro
131	%endif
132
133	%define len arg0
134	%define vec arg1
135	%define mul_array arg2
136	%define src arg3
137	%define dest arg4
138	%define ptr arg5
139	%define vec_i tmp2
140	%define dest1 tmp3
141	%define dest2 tmp4
142	%define vskip1 tmp5
143	%define vskip3 tmp6
144	%define pos return
145
146
147	%ifndef EC_ALIGNED_ADDR
148	;;; Use Un-aligned load/store
149	%define XLDR movdqu
150	%define XSTR movdqu
151	%else
152	;;; Use Non-temporal load/stor
153	%ifdef NO_NT_LDST
154	%define XLDR movdqa
155	%define XSTR movdqa
156	%else
157	%define XLDR movntdqa
158	%define XSTR movntdq
159	%endif
160	%endif
161
162	default rel
163
164	[bits 64]
165	section .text
166
167	%define xmask0f xmm15
168	%define xgft1_lo xmm2
169	%define xgft1_hi xmm3
170	%define xgft2_lo xmm4
171	%define xgft2_hi xmm5
172	%define xgft3_lo xmm10
173	%define xgft3_hi xmm6
174	%define xgft4_lo xmm8
175	%define xgft4_hi xmm7
176
177
178	%define x0 xmm0
179	%define xtmpa xmm1
180	%define xp1 xmm9
181	%define xp2 xmm11
182	%define xp3 xmm12
183	%define xp4 xmm13
184	%define xp5 xmm14
185
186	align 16
187	global gf_5vect_dot_prod_sse:function
188	func(gf_5vect_dot_prod_sse)
189	FUNC_SAVE
190	sub len, 16
191	jl .return_fail
192	xor pos, pos
193	movdqa xmask0f, [mask0f] ;Load mask of lower nibble in each byte
194	mov vskip1, vec
195	imul vskip1, 32
196	mov vskip3, vec
197	imul vskip3, 96
198	sal vec, LOG_PS ;vec *= PS. Make vec_i count by PS
199	mov dest1, [dest]
200	mov dest2, [dest+PS]
201
202
203	.loop16:
204	mov tmp, mul_array
205	xor vec_i, vec_i
206	pxor xp1, xp1
207	pxor xp2, xp2
208	pxor xp3, xp3
209	pxor xp4, xp4
210	pxor xp5, xp5
211
212
213	.next_vect:
214	mov ptr, [src+vec_i]
215	add vec_i, PS
216	XLDR x0, [ptr+pos] ;Get next source vector
217
218	movdqu xgft1_lo, [tmp] ;Load array Ax{00}, Ax{01}, ..., Ax{0f}
219	movdqu xgft1_hi, [tmp+16] ; " Ax{00}, Ax{10}, ..., Ax{f0}
220	movdqu xgft2_lo, [tmp+vskip1*1] ;Load array Bx{00}, Bx{01}, ..., Bx{0f}
221	movdqu xgft2_hi, [tmp+vskip1*1+16] ; " Bx{00}, Bx{10}, ..., Bx{f0}
222	movdqu xgft3_lo, [tmp+vskip1*2] ;Load array Cx{00}, Cx{01}, ..., Cx{0f}
223	movdqu xgft3_hi, [tmp+vskip1*2+16] ; " Cx{00}, Cx{10}, ..., Cx{f0}
224	movdqu xgft4_lo, [tmp+vskip3] ;Load array Dx{00}, Dx{01}, ..., Dx{0f}
225	movdqu xgft4_hi, [tmp+vskip3+16] ; " Dx{00}, Dx{10}, ..., Dx{f0}
226
227	movdqa xtmpa, x0 ;Keep unshifted copy of src
228	psraw x0, 4 ;Shift to put high nibble into bits 4-0
229	pand x0, xmask0f ;Mask high src nibble in bits 4-0
230	pand xtmpa, xmask0f ;Mask low src nibble in bits 4-0
231
232	pshufb xgft1_hi, x0 ;Lookup mul table of high nibble
233	pshufb xgft1_lo, xtmpa ;Lookup mul table of low nibble
234	pxor xgft1_hi, xgft1_lo ;GF add high and low partials
235	pxor xp1, xgft1_hi ;xp1 += partial
236
237	pshufb xgft2_hi, x0 ;Lookup mul table of high nibble
238	pshufb xgft2_lo, xtmpa ;Lookup mul table of low nibble
239	pxor xgft2_hi, xgft2_lo ;GF add high and low partials
240	pxor xp2, xgft2_hi ;xp2 += partial
241
242	movdqu xgft1_lo, [tmp+vskip1*4] ;Load array Ex{00}, Ex{01}, ..., Ex{0f}
243	movdqu xgft1_hi, [tmp+vskip1*4+16] ; " Ex{00}, Ex{10}, ..., Ex{f0}
244	add tmp, 32
245
246	pshufb xgft3_hi, x0 ;Lookup mul table of high nibble
247	pshufb xgft3_lo, xtmpa ;Lookup mul table of low nibble
248	pxor xgft3_hi, xgft3_lo ;GF add high and low partials
249	pxor xp3, xgft3_hi ;xp3 += partial
250
251	pshufb xgft4_hi, x0 ;Lookup mul table of high nibble
252	pshufb xgft4_lo, xtmpa ;Lookup mul table of low nibble
253	pxor xgft4_hi, xgft4_lo ;GF add high and low partials
254	pxor xp4, xgft4_hi ;xp4 += partial
255
256	pshufb xgft1_hi, x0 ;Lookup mul table of high nibble
257	pshufb xgft1_lo, xtmpa ;Lookup mul table of low nibble
258	pxor xgft1_hi, xgft1_lo ;GF add high and low partials
259	pxor xp5, xgft1_hi ;xp5 += partial
260
261	cmp vec_i, vec
262	jl .next_vect
263
264	mov tmp, [dest+2*PS]
265	mov ptr, [dest+3*PS]
266	mov vec_i, [dest+4*PS]
267
268	XSTR [dest1+pos], xp1
269	XSTR [dest2+pos], xp2
270	XSTR [tmp+pos], xp3
271	XSTR [ptr+pos], xp4
272	XSTR [vec_i+pos], xp5
273
274	add pos, 16 ;Loop on 16 bytes at a time
275	cmp pos, len
276	jle .loop16
277
278	lea tmp, [len + 16]
279	cmp pos, tmp
280	je .return_pass
281
282	;; Tail len
283	mov pos, len ;Overlapped offset length-16
284	jmp .loop16 ;Do one more overlap pass
285
286	.return_pass:
287	FUNC_RESTORE
288	mov return, 0
289	ret
290
291	.return_fail:
292	FUNC_RESTORE
293	mov return, 1
294	ret
295
296	endproc_frame
297
298	section .data
299
300	align 16
301	mask0f: ddq 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f
302
303	;;; func core, ver, snum
304	slversion gf_5vect_dot_prod_sse, 00, 05, 0065