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/*-
* Copyright (c) 2010 Konstantin Belousov <kib@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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(aesni_enc)
.cfi_startproc
movdqu (%rdx),%xmm0
cmpq $0,%r8
je 1f
movdqu (%r8),%xmm1 /* unaligned load into reg */
pxor %xmm1,%xmm0 /* pxor otherwise can fault on iv */
1:
pxor (%rsi),%xmm0
2:
addq $0x10,%rsi
// aesenc (%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xdc,0x06
decl %edi
jne 2b
addq $0x10,%rsi
// aesenclast (%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xdd,0x06
movdqu %xmm0,(%rcx)
retq
.cfi_endproc
END(aesni_enc)
ENTRY(aesni_dec)
.cfi_startproc
movdqu (%rdx),%xmm0
pxor (%rsi),%xmm0
1:
addq $0x10,%rsi
// aesdec (%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x06
decl %edi
jne 1b
addq $0x10,%rsi
// aesdeclast (%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xdf,0x06
cmpq $0,%r8
je 2f
movdqu (%r8),%xmm1
pxor %xmm1,%xmm0
2:
movdqu %xmm0,(%rcx)
retq
.cfi_endproc
END(aesni_dec)
ENTRY(aesni_decrypt_cbc)
.cfi_startproc
shrq $4,%rdx
movdqu (%r8),%xmm1
1:
movdqu (%rcx),%xmm0
movdqa %xmm0,%xmm2
pxor (%rsi),%xmm0
cmpl $12,%edi
// aesdec 0x10(%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x46,0x10
// aesdec 0x20(%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x46,0x20
// aesdec 0x30(%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x46,0x30
// aesdec 0x40(%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x46,0x40
// aesdec 0x50(%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x46,0x50
// aesdec 0x60(%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x46,0x60
// aesdec 0x70(%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x46,0x70
// aesdec 0x80(%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x86,0x80,0x00,0x00,0x00
// aesdec 0x90(%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x86,0x90,0x00,0x00,0x00
jge 2f
// aesdeclast 0xa0(%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xdf,0x86,0xa0,0x00,0x00,0x00
jmp 4f
2:
// aesdec 0xa0(%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x86,0xa0,0x00,0x00,0x00
// aesdec 0xb0(%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x86,0xb0,0x00,0x00,0x00
jg 3f
// aesdeclast 0xc0(%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xdf,0x86,0xc0,0x00,0x00,0x00
jmp 4f
3:
// aesdec 0xc0(%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x86,0xc0,0x00,0x00,0x00
// aesdec 0xd0(%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x86,0xd0,0x00,0x00,0x00
// aesdeclast 0xe0(%rsi),%xmm0
.byte 0x66,0x0f,0x38,0xdf,0x86,0xe0,0x00,0x00,0x00
4:
pxor %xmm1,%xmm0
movdqu %xmm0,(%rcx)
movdqa %xmm2,%xmm1 // iv
addq $0x10,%rcx
decq %rdx
jne 1b
retq
.cfi_endproc
END(aesni_decrypt_cbc)
.ident "$FreeBSD$"
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