Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 651 insertions, 0 deletions

diff --git a/src/isa-l/crc/crc32_ieee_02.asm b/src/isa-l/crc/crc32_ieee_02.asm
new file mode 100644
index 000000000..8a472b0bf
--- /dev/null
+++ b/src/isa-l/crc/crc32_ieee_02.asm
@@ -0,0 +1,651 @@
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;  Copyright(c) 2011-2020 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.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;       Function API:
+;       UINT32 crc32_ieee_02(
+;               UINT32 init_crc, //initial CRC value, 32 bits
+;               const unsigned char *buf, //buffer pointer to calculate CRC on
+;               UINT64 len //buffer length in bytes (64-bit data)
+;       );
+;
+;       Authors:
+;               Erdinc Ozturk
+;               Vinodh Gopal
+;               James Guilford
+;
+;       Reference paper titled "Fast CRC Computation for Generic Polynomials Using PCLMULQDQ Instruction"
+;       URL: http://www.intel.com/content/dam/www/public/us/en/documents/white-papers/fast-crc-computation-generic-polynomials-pclmulqdq-paper.pdf
+
+%include "reg_sizes.asm"
+
+%define	fetch_dist	1024
+[bits 64]
+default rel
+
+section .text
+
+%ifidn __OUTPUT_FORMAT__, win64
+        %xdefine        arg1 rcx
+        %xdefine        arg2 rdx
+        %xdefine        arg3 r8
+
+        %xdefine        arg1_low32 ecx
+%else
+        %xdefine        arg1 rdi
+        %xdefine        arg2 rsi
+        %xdefine        arg3 rdx
+
+        %xdefine        arg1_low32 edi
+%endif
+
+%define TMP 16*0
+%ifidn __OUTPUT_FORMAT__, win64
+        %define XMM_SAVE 16*2
+        %define VARIABLE_OFFSET 16*10+8
+%else
+        %define VARIABLE_OFFSET 16*2+8
+%endif
+align 16
+global	crc32_ieee_02:ISAL_SYM_TYPE_FUNCTION
+crc32_ieee_02:
+
+	not	arg1_low32      ;~init_crc
+
+	sub	rsp,VARIABLE_OFFSET
+
+%ifidn __OUTPUT_FORMAT__, win64
+        ; push the xmm registers into the stack to maintain
+        vmovdqa  [rsp + XMM_SAVE + 16*0], xmm6
+        vmovdqa  [rsp + XMM_SAVE + 16*1], xmm7
+        vmovdqa  [rsp + XMM_SAVE + 16*2], xmm8
+        vmovdqa  [rsp + XMM_SAVE + 16*3], xmm9
+        vmovdqa  [rsp + XMM_SAVE + 16*4], xmm10
+        vmovdqa  [rsp + XMM_SAVE + 16*5], xmm11
+        vmovdqa  [rsp + XMM_SAVE + 16*6], xmm12
+        vmovdqa  [rsp + XMM_SAVE + 16*7], xmm13
+%endif
+
+
+	; check if smaller than 256
+	cmp	arg3, 256
+
+	; for sizes less than 256, we can't fold 128B at a time...
+	jl	_less_than_256
+
+
+	; load the initial crc value
+	vmovd	xmm10, arg1_low32	; initial crc
+
+	; crc value does not need to be byte-reflected, but it needs to be moved to the high part of the register.
+	; because data will be byte-reflected and will align with initial crc at correct place.
+	vpslldq	xmm10, 12
+
+	vmovdqa xmm11, [SHUF_MASK]
+	; receive the initial 128B data, xor the initial crc value
+	vmovdqu	xmm0, [arg2+16*0]
+	vmovdqu	xmm1, [arg2+16*1]
+	vmovdqu	xmm2, [arg2+16*2]
+	vmovdqu	xmm3, [arg2+16*3]
+	vmovdqu	xmm4, [arg2+16*4]
+	vmovdqu	xmm5, [arg2+16*5]
+	vmovdqu	xmm6, [arg2+16*6]
+	vmovdqu	xmm7, [arg2+16*7]
+
+	vpshufb	xmm0, xmm11
+	; XOR the initial_crc value
+	vpxor	xmm0, xmm10
+	vpshufb	xmm1, xmm11
+	vpshufb	xmm2, xmm11
+	vpshufb	xmm3, xmm11
+	vpshufb	xmm4, xmm11
+	vpshufb	xmm5, xmm11
+	vpshufb	xmm6, xmm11
+	vpshufb	xmm7, xmm11
+
+	vmovdqa	xmm10, [rk3]	;xmm10 has rk3 and rk4
+					;imm value of pclmulqdq instruction will determine which constant to use
+	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+	; we subtract 256 instead of 128 to save one instruction from the loop
+	sub	arg3, 256
+
+	; at this section of the code, there is 128*x+y (0<=y<128) bytes of buffer. The _fold_128_B_loop
+	; loop will fold 128B at a time until we have 128+y Bytes of buffer
+
+
+	; fold 128B at a time. This section of the code folds 8 xmm registers in parallel
+_fold_128_B_loop:
+
+	; update the buffer pointer
+	add	arg2, 128		;    buf += 128;
+
+	prefetchnta [arg2+fetch_dist+0]
+	vmovdqu	xmm9, [arg2+16*0]
+	vmovdqu	xmm12, [arg2+16*1]
+	vpshufb	xmm9, xmm11
+	vpshufb	xmm12, xmm11
+	vmovdqa	xmm8, xmm0
+	vmovdqa	xmm13, xmm1
+	vpclmulqdq	xmm0, xmm10, 0x0
+	vpclmulqdq	xmm8, xmm10 , 0x11
+	vpclmulqdq	xmm1, xmm10, 0x0
+	vpclmulqdq	xmm13, xmm10 , 0x11
+	vpxor	xmm0, xmm9
+	vxorps	xmm0, xmm8
+	vpxor	xmm1, xmm12
+	vxorps	xmm1, xmm13
+
+	prefetchnta [arg2+fetch_dist+32]
+	vmovdqu	xmm9, [arg2+16*2]
+	vmovdqu	xmm12, [arg2+16*3]
+	vpshufb	xmm9, xmm11
+	vpshufb	xmm12, xmm11
+	vmovdqa	xmm8, xmm2
+	vmovdqa	xmm13, xmm3
+	vpclmulqdq	xmm2, xmm10, 0x0
+	vpclmulqdq	xmm8, xmm10 , 0x11
+	vpclmulqdq	xmm3, xmm10, 0x0
+	vpclmulqdq	xmm13, xmm10 , 0x11
+	vpxor	xmm2, xmm9
+	vxorps	xmm2, xmm8
+	vpxor	xmm3, xmm12
+	vxorps	xmm3, xmm13
+
+	prefetchnta [arg2+fetch_dist+64]
+	vmovdqu	xmm9, [arg2+16*4]
+	vmovdqu	xmm12, [arg2+16*5]
+	vpshufb	xmm9, xmm11
+	vpshufb	xmm12, xmm11
+	vmovdqa	xmm8, xmm4
+	vmovdqa	xmm13, xmm5
+	vpclmulqdq	xmm4, xmm10, 0x0
+	vpclmulqdq	xmm8, xmm10 , 0x11
+	vpclmulqdq	xmm5, xmm10, 0x0
+	vpclmulqdq	xmm13, xmm10 , 0x11
+	vpxor	xmm4, xmm9
+	vxorps	xmm4, xmm8
+	vpxor	xmm5, xmm12
+	vxorps	xmm5, xmm13
+
+	prefetchnta [arg2+fetch_dist+96]
+	vmovdqu	xmm9, [arg2+16*6]
+	vmovdqu	xmm12, [arg2+16*7]
+	vpshufb	xmm9, xmm11
+	vpshufb	xmm12, xmm11
+	vmovdqa	xmm8, xmm6
+	vmovdqa	xmm13, xmm7
+	vpclmulqdq	xmm6, xmm10, 0x0
+	vpclmulqdq	xmm8, xmm10 , 0x11
+	vpclmulqdq	xmm7, xmm10, 0x0
+	vpclmulqdq	xmm13, xmm10 , 0x11
+	vpxor	xmm6, xmm9
+	vxorps	xmm6, xmm8
+	vpxor	xmm7, xmm12
+	vxorps	xmm7, xmm13
+
+	sub	arg3, 128
+
+	; check if there is another 128B in the buffer to be able to fold
+	jge	_fold_128_B_loop
+	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+
+	add	arg2, 128
+	; at this point, the buffer pointer is pointing at the last y Bytes of the buffer
+	; the 128 of folded data is in 4 of the xmm registers: xmm0, xmm1, xmm2, xmm3
+
+
+	; fold the 8 xmm registers to 1 xmm register with different constants
+
+	vmovdqa	xmm10, [rk9]
+	vmovdqa	xmm8, xmm0
+	vpclmulqdq	xmm0, xmm10, 0x11
+	vpclmulqdq	xmm8, xmm10, 0x0
+	vpxor	xmm7, xmm8
+	vxorps	xmm7, xmm0
+
+	vmovdqa	xmm10, [rk11]
+	vmovdqa	xmm8, xmm1
+	vpclmulqdq	xmm1, xmm10, 0x11
+	vpclmulqdq	xmm8, xmm10, 0x0
+	vpxor	xmm7, xmm8
+	vxorps	xmm7, xmm1
+
+	vmovdqa	xmm10, [rk13]
+	vmovdqa	xmm8, xmm2
+	vpclmulqdq	xmm2, xmm10, 0x11
+	vpclmulqdq	xmm8, xmm10, 0x0
+	vpxor	xmm7, xmm8
+	vpxor	xmm7, xmm2
+
+	vmovdqa	xmm10, [rk15]
+	vmovdqa	xmm8, xmm3
+	vpclmulqdq	xmm3, xmm10, 0x11
+	vpclmulqdq	xmm8, xmm10, 0x0
+	vpxor	xmm7, xmm8
+	vxorps	xmm7, xmm3
+
+	vmovdqa	xmm10, [rk17]
+	vmovdqa	xmm8, xmm4
+	vpclmulqdq	xmm4, xmm10, 0x11
+	vpclmulqdq	xmm8, xmm10, 0x0
+	vpxor	xmm7, xmm8
+	vpxor	xmm7, xmm4
+
+	vmovdqa	xmm10, [rk19]
+	vmovdqa	xmm8, xmm5
+	vpclmulqdq	xmm5, xmm10, 0x11
+	vpclmulqdq	xmm8, xmm10, 0x0
+	vpxor	xmm7, xmm8
+	vxorps	xmm7, xmm5
+
+	vmovdqa	xmm10, [rk1]	;xmm10 has rk1 and rk2
+									;imm value of pclmulqdq instruction will determine which constant to use
+	vmovdqa	xmm8, xmm6
+	vpclmulqdq	xmm6, xmm10, 0x11
+	vpclmulqdq	xmm8, xmm10, 0x0
+	vpxor	xmm7, xmm8
+	vpxor	xmm7, xmm6
+
+
+	; instead of 128, we add 112 to the loop counter to save 1 instruction from the loop
+	; instead of a cmp instruction, we use the negative flag with the jl instruction
+	add	arg3, 128-16
+	jl	_final_reduction_for_128
+
+	; now we have 16+y bytes left to reduce. 16 Bytes is in register xmm7 and the rest is in memory
+	; we can fold 16 bytes at a time if y>=16
+	; continue folding 16B at a time
+
+_16B_reduction_loop:
+	vmovdqa	xmm8, xmm7
+	vpclmulqdq	xmm7, xmm10, 0x11
+	vpclmulqdq	xmm8, xmm10, 0x0
+	vpxor	xmm7, xmm8
+	vmovdqu	xmm0, [arg2]
+	vpshufb	xmm0, xmm11
+	vpxor	xmm7, xmm0
+	add	arg2, 16
+	sub	arg3, 16
+	; instead of a cmp instruction, we utilize the flags with the jge instruction
+	; equivalent of: cmp arg3, 16-16
+	; check if there is any more 16B in the buffer to be able to fold
+	jge	_16B_reduction_loop
+
+	;now we have 16+z bytes left to reduce, where 0<= z < 16.
+	;first, we reduce the data in the xmm7 register
+
+
+_final_reduction_for_128:
+	; check if any more data to fold. If not, compute the CRC of the final 128 bits
+	add	arg3, 16
+	je	_128_done
+
+	; here we are getting data that is less than 16 bytes.
+	; since we know that there was data before the pointer, we can offset the input pointer before the actual point, to receive exactly 16 bytes.
+	; after that the registers need to be adjusted.
+_get_last_two_xmms:
+	vmovdqa	xmm2, xmm7
+
+	vmovdqu	xmm1, [arg2 - 16 + arg3]
+	vpshufb	xmm1, xmm11
+
+	; get rid of the extra data that was loaded before
+	; load the shift constant
+	lea	rax, [pshufb_shf_table + 16]
+	sub	rax, arg3
+	vmovdqu	xmm0, [rax]
+
+	; shift xmm2 to the left by arg3 bytes
+	vpshufb	xmm2, xmm0
+
+	; shift xmm7 to the right by 16-arg3 bytes
+	vpxor	xmm0, [mask1]
+	vpshufb	xmm7, xmm0
+	vpblendvb	xmm1, xmm1, xmm2, xmm0
+
+	; fold 16 Bytes
+	vmovdqa	xmm2, xmm1
+	vmovdqa	xmm8, xmm7
+	vpclmulqdq	xmm7, xmm10, 0x11
+	vpclmulqdq	xmm8, xmm10, 0x0
+	vpxor	xmm7, xmm8
+	vpxor	xmm7, xmm2
+
+_128_done:
+	; compute crc of a 128-bit value
+	vmovdqa	xmm10, [rk5]	; rk5 and rk6 in xmm10
+	vmovdqa	xmm0, xmm7
+
+	;64b fold
+	vpclmulqdq	xmm7, xmm10, 0x1
+	vpslldq	xmm0, 8
+	vpxor	xmm7, xmm0
+
+	;32b fold
+	vmovdqa	xmm0, xmm7
+
+	vpand	xmm0, [mask2]
+
+	vpsrldq	xmm7, 12
+	vpclmulqdq	xmm7, xmm10, 0x10
+	vpxor	xmm7, xmm0
+
+	;barrett reduction
+_barrett:
+	vmovdqa	xmm10, [rk7]	; rk7 and rk8 in xmm10
+	vmovdqa	xmm0, xmm7
+	vpclmulqdq	xmm7, xmm10, 0x01
+	vpslldq	xmm7, 4
+	vpclmulqdq	xmm7, xmm10, 0x11
+
+	vpslldq	xmm7, 4
+	vpxor	xmm7, xmm0
+	vpextrd	eax, xmm7,1
+
+_cleanup:
+	not     eax
+%ifidn __OUTPUT_FORMAT__, win64
+        vmovdqa  xmm6, [rsp + XMM_SAVE + 16*0]
+        vmovdqa  xmm7, [rsp + XMM_SAVE + 16*1]
+        vmovdqa  xmm8, [rsp + XMM_SAVE + 16*2]
+        vmovdqa  xmm9, [rsp + XMM_SAVE + 16*3]
+        vmovdqa  xmm10, [rsp + XMM_SAVE + 16*4]
+        vmovdqa  xmm11, [rsp + XMM_SAVE + 16*5]
+        vmovdqa  xmm12, [rsp + XMM_SAVE + 16*6]
+        vmovdqa  xmm13, [rsp + XMM_SAVE + 16*7]
+%endif
+	add	rsp,VARIABLE_OFFSET
+	ret
+
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+align 16
+_less_than_256:
+
+	; check if there is enough buffer to be able to fold 16B at a time
+	cmp	arg3, 32
+	jl	_less_than_32
+	vmovdqa xmm11, [SHUF_MASK]
+
+	; if there is, load the constants
+	vmovdqa	xmm10, [rk1]	; rk1 and rk2 in xmm10
+
+	vmovd	xmm0, arg1_low32	; get the initial crc value
+	vpslldq	xmm0, 12	; align it to its correct place
+	vmovdqu	xmm7, [arg2]	; load the plaintext
+	vpshufb	xmm7, xmm11	; byte-reflect the plaintext
+	vpxor	xmm7, xmm0
+
+
+	; update the buffer pointer
+	add	arg2, 16
+
+	; update the counter. subtract 32 instead of 16 to save one instruction from the loop
+	sub	arg3, 32
+
+	jmp	_16B_reduction_loop
+
+
+align 16
+_less_than_32:
+	; mov initial crc to the return value. this is necessary for zero-length buffers.
+	mov	eax, arg1_low32
+	test	arg3, arg3
+	je	_cleanup
+
+	vmovdqa xmm11, [SHUF_MASK]
+
+	vmovd	xmm0, arg1_low32	; get the initial crc value
+	vpslldq	xmm0, 12	; align it to its correct place
+
+	cmp	arg3, 16
+	je	_exact_16_left
+	jl	_less_than_16_left
+
+	vmovdqu	xmm7, [arg2]	; load the plaintext
+	vpshufb	xmm7, xmm11	; byte-reflect the plaintext
+	vpxor	xmm7, xmm0	; xor the initial crc value
+	add	arg2, 16
+	sub	arg3, 16
+	vmovdqa	xmm10, [rk1]	; rk1 and rk2 in xmm10
+	jmp	_get_last_two_xmms
+
+
+align 16
+_less_than_16_left:
+	; use stack space to load data less than 16 bytes, zero-out the 16B in memory first.
+
+	vpxor	xmm1, xmm1
+	mov	r11, rsp
+	vmovdqa	[r11], xmm1
+
+	cmp	arg3, 4
+	jl	_only_less_than_4
+
+	;	backup the counter value
+	mov	r9, arg3
+	cmp	arg3, 8
+	jl	_less_than_8_left
+
+	; load 8 Bytes
+	mov	rax, [arg2]
+	mov	[r11], rax
+	add	r11, 8
+	sub	arg3, 8
+	add	arg2, 8
+_less_than_8_left:
+
+	cmp	arg3, 4
+	jl	_less_than_4_left
+
+	; load 4 Bytes
+	mov	eax, [arg2]
+	mov	[r11], eax
+	add	r11, 4
+	sub	arg3, 4
+	add	arg2, 4
+_less_than_4_left:
+
+	cmp	arg3, 2
+	jl	_less_than_2_left
+
+	; load 2 Bytes
+	mov	ax, [arg2]
+	mov	[r11], ax
+	add	r11, 2
+	sub	arg3, 2
+	add	arg2, 2
+_less_than_2_left:
+	cmp     arg3, 1
+        jl      _zero_left
+
+	; load 1 Byte
+	mov	al, [arg2]
+	mov	[r11], al
+_zero_left:
+	vmovdqa	xmm7, [rsp]
+	vpshufb	xmm7, xmm11
+	vpxor	xmm7, xmm0	; xor the initial crc value
+
+	; shl r9, 4
+	lea	rax, [pshufb_shf_table + 16]
+	sub	rax, r9
+	vmovdqu	xmm0, [rax]
+	vpxor	xmm0, [mask1]
+
+	vpshufb	xmm7, xmm0
+	jmp	_128_done
+
+align 16
+_exact_16_left:
+	vmovdqu	xmm7, [arg2]
+	vpshufb	xmm7, xmm11
+	vpxor	xmm7, xmm0	; xor the initial crc value
+
+	jmp	_128_done
+
+_only_less_than_4:
+	cmp	arg3, 3
+	jl	_only_less_than_3
+
+	; load 3 Bytes
+	mov	al, [arg2]
+	mov	[r11], al
+
+	mov	al, [arg2+1]
+	mov	[r11+1], al
+
+	mov	al, [arg2+2]
+	mov	[r11+2], al
+
+	vmovdqa	xmm7, [rsp]
+	vpshufb	xmm7, xmm11
+	vpxor	xmm7, xmm0	; xor the initial crc value
+
+	vpsrldq	xmm7, 5
+
+	jmp	_barrett
+_only_less_than_3:
+	cmp	arg3, 2
+	jl	_only_less_than_2
+
+	; load 2 Bytes
+	mov	al, [arg2]
+	mov	[r11], al
+
+	mov	al, [arg2+1]
+	mov	[r11+1], al
+
+	vmovdqa	xmm7, [rsp]
+	vpshufb	xmm7, xmm11
+	vpxor	xmm7, xmm0	; xor the initial crc value
+
+	vpsrldq	xmm7, 6
+
+	jmp	_barrett
+_only_less_than_2:
+
+	; load 1 Byte
+	mov	al, [arg2]
+	mov	[r11], al
+
+	vmovdqa	xmm7, [rsp]
+	vpshufb	xmm7, xmm11
+	vpxor	xmm7, xmm0	; xor the initial crc value
+
+	vpsrldq	xmm7, 7
+
+	jmp	_barrett
+
+section .data
+
+; precomputed constants
+align 16
+
+rk1 :
+DQ 0xf200aa6600000000
+rk2 :
+DQ 0x17d3315d00000000
+rk3 :
+DQ 0x022ffca500000000
+rk4 :
+DQ 0x9d9ee22f00000000
+rk5 :
+DQ 0xf200aa6600000000
+rk6 :
+DQ 0x490d678d00000000
+rk7 :
+DQ 0x0000000104d101df
+rk8 :
+DQ 0x0000000104c11db7
+rk9 :
+DQ 0x6ac7e7d700000000
+rk10 :
+DQ 0xfcd922af00000000
+rk11 :
+DQ 0x34e45a6300000000
+rk12 :
+DQ 0x8762c1f600000000
+rk13 :
+DQ 0x5395a0ea00000000
+rk14 :
+DQ 0x54f2d5c700000000
+rk15 :
+DQ 0xd3504ec700000000
+rk16 :
+DQ 0x57a8445500000000
+rk17 :
+DQ 0xc053585d00000000
+rk18 :
+DQ 0x766f1b7800000000
+rk19 :
+DQ 0xcd8c54b500000000
+rk20 :
+DQ 0xab40b71e00000000
+
+
+
+
+
+
+
+
+
+mask1:
+dq 0x8080808080808080, 0x8080808080808080
+mask2:
+dq 0xFFFFFFFFFFFFFFFF, 0x00000000FFFFFFFF
+
+SHUF_MASK:
+dq 0x08090A0B0C0D0E0F, 0x0001020304050607
+
+pshufb_shf_table:
+; use these values for shift constants for the pshufb instruction
+; different alignments result in values as shown:
+;	dq 0x8887868584838281, 0x008f8e8d8c8b8a89 ; shl 15 (16-1) / shr1
+;	dq 0x8988878685848382, 0x01008f8e8d8c8b8a ; shl 14 (16-3) / shr2
+;	dq 0x8a89888786858483, 0x0201008f8e8d8c8b ; shl 13 (16-4) / shr3
+;	dq 0x8b8a898887868584, 0x030201008f8e8d8c ; shl 12 (16-4) / shr4
+;	dq 0x8c8b8a8988878685, 0x04030201008f8e8d ; shl 11 (16-5) / shr5
+;	dq 0x8d8c8b8a89888786, 0x0504030201008f8e ; shl 10 (16-6) / shr6
+;	dq 0x8e8d8c8b8a898887, 0x060504030201008f ; shl 9  (16-7) / shr7
+;	dq 0x8f8e8d8c8b8a8988, 0x0706050403020100 ; shl 8  (16-8) / shr8
+;	dq 0x008f8e8d8c8b8a89, 0x0807060504030201 ; shl 7  (16-9) / shr9
+;	dq 0x01008f8e8d8c8b8a, 0x0908070605040302 ; shl 6  (16-10) / shr10
+;	dq 0x0201008f8e8d8c8b, 0x0a09080706050403 ; shl 5  (16-11) / shr11
+;	dq 0x030201008f8e8d8c, 0x0b0a090807060504 ; shl 4  (16-12) / shr12
+;	dq 0x04030201008f8e8d, 0x0c0b0a0908070605 ; shl 3  (16-13) / shr13
+;	dq 0x0504030201008f8e, 0x0d0c0b0a09080706 ; shl 2  (16-14) / shr14
+;	dq 0x060504030201008f, 0x0e0d0c0b0a090807 ; shl 1  (16-15) / shr15
+dq 0x8786858483828100, 0x8f8e8d8c8b8a8988
+dq 0x0706050403020100, 0x000e0d0c0b0a0908