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freebsd-skq/sys/crypto/aesni/aeskeys_amd64.S
kib a619846587 Crypto(4) driver for AESNI. 
The aeskeys_{amd64,i386}.S content was mostly obtained from OpenBSD,
no objections to the license from core.

Hardware provided by:	Sentex Communications
Tested by:	fabient, pho (previous versions)
MFC after:	1 month
2010-07-23 11:00:46 +00:00

256 lines
7.4 KiB
ArmAsm
Raw Blame History

/*-
* The white paper of AES-NI instructions can be downloaded from:
* http://softwarecommunity.intel.com/isn/downloads/intelavx/AES-Instructions-Set_WP.pdf
*
* Copyright (C) 2008-2010, Intel Corporation
* Author: Huang Ying <ying.huang@intel.com>
* Vinodh Gopal <vinodh.gopal@intel.com>
* Kahraman Akdemir
*
* 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.
*/
#include <machine/asmacros.h>
.text
ENTRY(_key_expansion_128)
_key_expansion_256a:
.cfi_startproc
pshufd $0b11111111,%xmm1,%xmm1
shufps $0b00010000,%xmm0,%xmm4
pxor %xmm4,%xmm0
shufps $0b10001100,%xmm0,%xmm4
pxor %xmm4,%xmm0
pxor %xmm1,%xmm0
movaps %xmm0,(%rsi)
addq $0x10,%rsi
retq
.cfi_endproc
END(_key_expansion_128)
ENTRY(_key_expansion_192a)
.cfi_startproc
pshufd $0b01010101,%xmm1,%xmm1
shufps $0b00010000,%xmm0,%xmm4
pxor %xmm4,%xmm0
shufps $0b10001100,%xmm0,%xmm4
pxor %xmm4,%xmm0
pxor %xmm1,%xmm0
movaps %xmm2,%xmm5
movaps %xmm2,%xmm6
pslldq $4,%xmm5
pshufd $0b11111111,%xmm0,%xmm3
pxor %xmm3,%xmm2
pxor %xmm5,%xmm2
movaps %xmm0,%xmm1
shufps $0b01000100,%xmm0,%xmm6
movaps %xmm6,(%rsi)
shufps $0b01001110,%xmm2,%xmm1
movaps %xmm1,0x10(%rsi)
addq $0x20,%rsi
retq
.cfi_endproc
END(_key_expansion_192a)
ENTRY(_key_expansion_192b)
.cfi_startproc
pshufd $0b01010101,%xmm1,%xmm1
shufps $0b00010000,%xmm0,%xmm4
pxor %xmm4,%xmm0
shufps $0b10001100,%xmm0,%xmm4
pxor %xmm4,%xmm0
pxor %xmm1,%xmm0
movaps %xmm2,%xmm5
pslldq $4,%xmm5
pshufd $0b11111111,%xmm0,%xmm3
pxor %xmm3,%xmm2
pxor %xmm5,%xmm2
movaps %xmm0,(%rsi)
addq $0x10,%rsi
retq
.cfi_endproc
END(_key_expansion_192b)
ENTRY(_key_expansion_256b)
.cfi_startproc
pshufd $0b10101010,%xmm1,%xmm1
shufps $0b00010000,%xmm2,%xmm4
pxor %xmm4,%xmm2
shufps $0b10001100,%xmm2,%xmm4
pxor %xmm4,%xmm2
pxor %xmm1,%xmm2
movaps %xmm2,(%rsi)
addq $0x10,%rsi
retq
.cfi_endproc
END(_key_expansion_256b)
ENTRY(aesni_set_enckey)
.cfi_startproc
movups (%rdi),%xmm0 # user key (first 16 bytes)
movaps %xmm0,(%rsi)
addq $0x10,%rsi # key addr
pxor %xmm4,%xmm4 # xmm4 is assumed 0 in _key_expansion_x
cmpl $12,%edx
jb .Lenc_key128
je .Lenc_key192
movups 0x10(%rdi),%xmm2 # other user key
movaps %xmm2,(%rsi)
addq $0x10,%rsi
// aeskeygenassist $0x1,%xmm2,%xmm1 # round 1
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x01
call _key_expansion_256a
// aeskeygenassist $0x1,%xmm0,%xmm1
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x01
call _key_expansion_256b
// aeskeygenassist $0x2,%xmm2,%xmm1 # round 2
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x02
call _key_expansion_256a
// aeskeygenassist $0x2,%xmm0,%xmm1
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x02
call _key_expansion_256b
// aeskeygenassist $0x4,%xmm2,%xmm1 # round 3
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x04
call _key_expansion_256a
// aeskeygenassist $0x4,%xmm0,%xmm1
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x04
call _key_expansion_256b
// aeskeygenassist $0x8,%xmm2,%xmm1 # round 4
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x08
call _key_expansion_256a
// aeskeygenassist $0x8,%xmm0,%xmm1
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x08
call _key_expansion_256b
// aeskeygenassist $0x10,%xmm2,%xmm1 # round 5
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x10
call _key_expansion_256a
// aeskeygenassist $0x10,%xmm0,%xmm1
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x10
call _key_expansion_256b
// aeskeygenassist $0x20,%xmm2,%xmm1 # round 6
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x20
call _key_expansion_256a
// aeskeygenassist $0x20,%xmm0,%xmm1
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x20
call _key_expansion_256b
// aeskeygenassist $0x40,%xmm2,%xmm1 # round 7
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x20
call _key_expansion_256a
retq
.Lenc_key192:
movq 0x10(%rdi),%xmm2 # other user key
// aeskeygenassist $0x1,%xmm2,%xmm1 # round 1
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x01
call _key_expansion_192a
// aeskeygenassist $0x2,%xmm2,%xmm1 # round 2
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x02
call _key_expansion_192b
// aeskeygenassist $0x4,%xmm2,%xmm1 # round 3
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x04
call _key_expansion_192a
// aeskeygenassist $0x8,%xmm2,%xmm1 # round 4
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x08
call _key_expansion_192b
// aeskeygenassist $0x10,%xmm2,%xmm1 # round 5
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x10
call _key_expansion_192a
// aeskeygenassist $0x20,%xmm2,%xmm1 # round 6
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x20
call _key_expansion_192b
// aeskeygenassist $0x40,%xmm2,%xmm1 # round 7
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x40
call _key_expansion_192a
// aeskeygenassist $0x80,%xmm2,%xmm1 # round 8
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x80
call _key_expansion_192b
retq
.Lenc_key128:
// aeskeygenassist $0x1,%xmm0,%xmm1 # round 1
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x01
call _key_expansion_128
// aeskeygenassist $0x2,%xmm0,%xmm1 # round 2
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x02
call _key_expansion_128
// aeskeygenassist $0x4,%xmm0,%xmm1 # round 3
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x04
call _key_expansion_128
// aeskeygenassist $0x8,%xmm0,%xmm1 # round 4
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x08
call _key_expansion_128
// aeskeygenassist $0x10,%xmm0,%xmm1 # round 5
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x10
call _key_expansion_128
// aeskeygenassist $0x20,%xmm0,%xmm1 # round 6
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x20
call _key_expansion_128
// aeskeygenassist $0x40,%xmm0,%xmm1 # round 7
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x40
call _key_expansion_128
// aeskeygenassist $0x80,%xmm0,%xmm1 # round 8
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x80
call _key_expansion_128
// aeskeygenassist $0x1b,%xmm0,%xmm1 # round 9
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x1b
call _key_expansion_128
// aeskeygenassist $0x36,%xmm0,%xmm1 # round 10
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x36
call _key_expansion_128
retq
.cfi_endproc
END(aesni_set_enckey)
ENTRY(aesni_set_deckey)
.cfi_startproc
movslq %edx,%rax
shlq $4,%rax
addq %rax,%rdi
movdqa (%rdi),%xmm0
movdqa %xmm0,(%rsi)
decl %edx
1:
addq $0x10,%rsi
subq $0x10,%rdi
// aesimc (%rdi),%xmm1
.byte 0x66,0x0f,0x38,0xdb,0x0f
movdqa %xmm1,(%rsi)
decl %edx
jne 1b
addq $0x10,%rsi
subq $0x10,%rdi
movdqa (%rdi),%xmm0
movdqa %xmm0,(%rsi)
retq
.cfi_endproc
END(aesni_set_deckey)
.ident "$FreeBSD$"
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