1 files changed, 285 insertions, 0 deletions
diff --git a/src/spdk/isa-l/raid/xor_check_sse.asm b/src/spdk/isa-l/raid/xor_check_sse.asm
new file mode 100644
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--- /dev/null
+++ b/src/spdk/isa-l/raid/xor_check_sse.asm
@@ -0,0 +1,285 @@
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;  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.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;;; Optimized xor of N source vectors using SSE
+;;; int xor_gen_sse(int vects, int len, void **array)
+
+;;; Generates xor parity vector from N (vects-1) sources in array of pointers
+;;; (**array).  Last pointer is the dest.
+;;; Vectors must be aligned to 16 bytes.  Length can be any value.
+
+%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  rax
+ %define tmp2.b al
+ %define tmp3  arg4
+ %define return rax
+ %define PS 8
+ %define func(x) x:
+ %define FUNC_SAVE
+ %define FUNC_RESTORE
+
+%elifidn __OUTPUT_FORMAT__, win64
+ %define arg0  rcx
+ %define arg1  rdx
+ %define arg2  r8
+ %define arg3  r9
+ %define return rax
+ %define tmp2  rax
+ %define tmp2.b al
+ %define PS 8
+ %define tmp   r11
+ %define tmp3  r10
+ %define stack_size  2*16 + 8 	; must be an odd multiple of 8
+ %define func(x) proc_frame x
+
+ %macro FUNC_SAVE 0
+	alloc_stack	stack_size
+	save_xmm128	xmm6, 0*16
+	save_xmm128	xmm7, 1*16
+	end_prolog
+ %endmacro
+ %macro FUNC_RESTORE 0
+	movdqa	xmm6, [rsp + 0*16]
+	movdqa	xmm7, [rsp + 1*16]
+	add	rsp, stack_size
+ %endmacro
+
+
+%elifidn __OUTPUT_FORMAT__, elf32
+ %define arg0   arg(0)
+ %define arg1   ecx
+ %define tmp2   eax
+ %define tmp2.b  al
+ %define tmp3   edx
+ %define return eax
+ %define PS 4
+ %define func(x) x:
+ %define arg(x) [ebp+8+PS*x]
+ %define arg2  edi	; must sav/restore
+ %define arg3  esi
+ %define tmp   ebx
+
+ %macro FUNC_SAVE 0
+	push	ebp
+	mov	ebp, esp
+	push	esi
+	push	edi
+	push	ebx
+	mov	arg1, arg(1)
+	mov	arg2, arg(2)
+ %endmacro
+
+ %macro FUNC_RESTORE 0
+	pop	ebx
+	pop	edi
+	pop	esi
+	mov	esp, ebp	;if has frame pointer
+	pop	ebp
+ %endmacro
+
+%endif	; output formats
+
+
+%define vec arg0
+%define	len arg1
+%define ptr arg3
+%define pos tmp3
+
+%ifidn PS,8			; 64-bit code
+ default rel
+ [bits 64]
+%endif
+
+;;; Use Non-temporal load/stor
+%ifdef NO_NT_LDST
+ %define XLDR movdqa
+ %define XSTR movdqa
+%else
+ %define XLDR movntdqa
+ %define XSTR movntdq
+%endif
+
+section .text
+
+align 16
+global xor_check_sse:ISAL_SYM_TYPE_FUNCTION
+func(xor_check_sse)
+	FUNC_SAVE
+%ifidn PS,8				;64-bit code
+	sub	vec, 1			; Keep as offset to last source
+%else					;32-bit code
+	mov	tmp, arg(0)		; Update vec length arg to last source
+	sub	tmp, 1
+	mov	arg(0), tmp
+%endif
+
+	jng	return_fail		;Must have at least 2 sources
+	cmp	len, 0
+	je	return_pass
+	test	len, (128-1)		;Check alignment of length
+	jnz	len_not_aligned
+
+
+len_aligned_128bytes:
+	sub	len, 128
+	mov	pos, 0
+	mov	tmp, vec		;Preset to last vector
+
+loop128:
+	mov	tmp2, [arg2+tmp*PS]	;Fetch last pointer in array
+	sub	tmp, 1			;Next vect
+	XLDR	xmm0, [tmp2+pos]	;Start with end of array in last vector
+	XLDR	xmm1, [tmp2+pos+16]	;Keep xor parity in xmm0-7
+	XLDR	xmm2, [tmp2+pos+(2*16)]
+	XLDR	xmm3, [tmp2+pos+(3*16)]
+	XLDR	xmm4, [tmp2+pos+(4*16)]
+	XLDR	xmm5, [tmp2+pos+(5*16)]
+	XLDR	xmm6, [tmp2+pos+(6*16)]
+	XLDR	xmm7, [tmp2+pos+(7*16)]
+
+next_vect:
+	mov 	ptr, [arg2+tmp*PS]
+	sub	tmp, 1
+	xorpd	xmm0, [ptr+pos]		;Get next vector (source)
+	xorpd	xmm1, [ptr+pos+16]
+	xorpd	xmm2, [ptr+pos+(2*16)]
+	xorpd	xmm3, [ptr+pos+(3*16)]
+	xorpd	xmm4, [ptr+pos+(4*16)]
+	xorpd	xmm5, [ptr+pos+(5*16)]
+	xorpd	xmm6, [ptr+pos+(6*16)]
+	xorpd	xmm7, [ptr+pos+(7*16)]
+;;;  	prefetch [ptr+pos+(8*16)]
+	jge	next_vect		;Loop for each vect
+
+	;; End of vects, chech that all parity regs = 0
+	mov	tmp, vec		;Back to last vector
+	por	xmm0, xmm1
+	por	xmm0, xmm2
+	por	xmm0, xmm3
+	por	xmm0, xmm4
+	por	xmm0, xmm5
+	por	xmm0, xmm6
+	por	xmm0, xmm7
+	ptest	xmm0, xmm0
+	jnz	return_fail
+
+	add	pos, 128
+	cmp	pos, len
+	jle	loop128
+
+return_pass:
+	FUNC_RESTORE
+	mov	return, 0
+	ret
+
+
+
+;;; Do one byte at a time for no alignment case
+
+xor_gen_byte:
+	mov	tmp, vec		;Preset to last vector
+
+loop_1byte:
+	mov 	ptr, [arg2+tmp*PS] 	;Fetch last pointer in array
+	mov	tmp2.b, [ptr+len-1]	;Get array n
+	sub	tmp, 1
+nextvect_1byte:
+	mov 	ptr, [arg2+tmp*PS]
+	xor	tmp2.b, [ptr+len-1]
+	sub	tmp, 1
+	jge	nextvect_1byte
+
+	mov	tmp, vec		;Back to last vector
+	cmp	tmp2.b, 0
+	jne	return_fail
+	sub	len, 1
+	test	len, (8-1)
+	jnz	loop_1byte
+
+	cmp	len, 0
+	je	return_pass
+	test	len, (128-1)		;If not 0 and 128bit aligned
+	jz	len_aligned_128bytes	; then do aligned case. len = y * 128
+
+	;; else we are 8-byte aligned so fall through to recheck
+
+
+	;; Unaligned length cases
+len_not_aligned:
+	test	len, (PS-1)
+	jne	xor_gen_byte
+	mov	tmp3, len
+	and	tmp3, (128-1)		;Do the unaligned bytes 4-8 at a time
+	mov	tmp, vec		;Preset to last vector
+
+	;; Run backwards 8 bytes (4B for 32bit) at a time for (tmp3) bytes
+loopN_bytes:
+	mov 	ptr, [arg2+tmp*PS] 	;Fetch last pointer in array
+	mov	tmp2, [ptr+len-PS]	;Get array n
+	sub	tmp, 1
+nextvect_Nbytes:
+	mov 	ptr, [arg2+tmp*PS] 	;Get pointer to next vector
+	xor	tmp2, [ptr+len-PS]
+	sub	tmp, 1
+	jge	nextvect_Nbytes		;Loop for each source
+
+	mov	tmp, vec		;Back to last vector
+	cmp	tmp2, 0
+	jne	return_fail
+	sub	len, PS
+	sub	tmp3, PS
+	jg	loopN_bytes
+
+	cmp	len, 128		;Now len is aligned to 128B
+	jge	len_aligned_128bytes	;We can do the rest aligned
+
+	cmp	len, 0
+	je	return_pass
+
+return_fail:
+	mov	return, 1
+	FUNC_RESTORE
+	ret
+
+endproc_frame
+
+section .data
+
+;;;       func           core, ver, snum
+slversion xor_check_sse, 00,   03,  0031
+