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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>
ENTRY(aesni_enc)
.cfi_startproc
pushl %ebp
.cfi_adjust_cfa_offset 4
movl %esp,%ebp
movl 8(%ebp),%ecx /* rounds */
movl 16(%ebp),%edx
movdqu (%edx),%xmm0 /* from */
movl 24(%ebp),%eax /* iv */
cmpl $0,%eax
je 1f
movdqu (%eax),%xmm1
pxor %xmm1,%xmm0
1:
movl 12(%ebp),%eax /* key */
pxor (%eax),%xmm0
2:
addl $0x10,%eax
// aesenc (%eax),%xmm0
.byte 0x66,0x0f,0x38,0xdc,0x00
loopne 2b
addl $0x10,%eax
// aesenclast (%eax),%xmm0
.byte 0x66,0x0f,0x38,0xdd,0x00
movl 20(%ebp),%eax
movdqu %xmm0,(%eax) /* to */
leave
.cfi_adjust_cfa_offset -4
retl
.cfi_endproc
END(aesni_enc)
ENTRY(aesni_dec)
.cfi_startproc
pushl %ebp
.cfi_adjust_cfa_offset 4
movl %esp,%ebp
movl 8(%ebp),%ecx /* rounds */
movl 16(%ebp),%edx
movdqu (%edx),%xmm0 /* from */
movl 12(%ebp),%eax /* key */
pxor (%eax),%xmm0
1:
addl $0x10,%eax
// aesdec (%eax),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x00
loopne 1b
addl $0x10,%eax
// aesdeclast (%eax),%xmm0
.byte 0x66,0x0f,0x38,0xdf,0x00
movl 24(%ebp),%eax
cmpl $0,%eax /* iv */
je 2f
movdqu (%eax),%xmm1
pxor %xmm1,%xmm0
2:
movl 20(%ebp),%eax
movdqu %xmm0,(%eax) /* to */
leave
.cfi_adjust_cfa_offset -4
retl
.cfi_endproc
END(aesni_dec)
ENTRY(aesni_decrypt_cbc)
.cfi_startproc
pushl %ebp
.cfi_adjust_cfa_offset 4
movl %esp,%ebp
pushl %ebx
pushl %esi
movl 12(%ebp),%eax /* key */
movl 16(%ebp),%ecx /* length */
shrl $4,%ecx
movl 20(%ebp),%ebx /* buf */
movl 24(%ebp),%esi
movdqu (%esi),%xmm1 /* iv */
movl 8(%ebp),%esi /* rounds */
1:
movdqu (%ebx),%xmm0
movdqa %xmm0,%xmm2
pxor (%eax),%xmm0
cmpl $12,%esi
// aesdec 0x10(%eax),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x40,0x10
// aesdec 0x20(%eax),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x40,0x20
// aesdec 0x30(%eax),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x40,0x30
// aesdec 0x40(%eax),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x40,0x40
// aesdec 0x50(%eax),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x40,0x50
// aesdec 0x60(%eax),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x40,0x60
// aesdec 0x70(%eax),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x40,0x70
// aesdec 0x80(%eax),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x80,0x80,0x00,0x00,0x00
// aesdec 0x90(%eax),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x80,0x90,0x00,0x00,0x00
jge 2f
// aesdeclast 0xa0(%eax),%xmm0
.byte 0x66,0x0f,0x38,0xdf,0x80,0xa0,0x00,0x00,0x00
jmp 4f
2:
// aesdec 0xa0(%eax),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x80,0xa0,0x00,0x00,0x00
// aesdec 0xb0(%eax),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x80,0xb0,0x00,0x00,0x00
jg 3f
// aesdeclast 0xc0(%eax),%xmm0
.byte 0x66,0x0f,0x38,0xdf,0x80,0xc0,0x00,0x00,0x00
jmp 4f
3:
// aesdec 0xc0(%eax),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x80,0xc0,0x00,0x00,0x00
// aesdec 0xd0(%eax),%xmm0
.byte 0x66,0x0f,0x38,0xde,0x80,0xd0,0x00,0x00,0x00
// aesdeclast 0xe0(%eax),%xmm0
.byte 0x66,0x0f,0x38,0xdf,0x80,0xe0,0x00,0x00,0x00
4:
pxor %xmm1,%xmm0
movdqu %xmm0,(%ebx)
movdqa %xmm2,%xmm1
addl $0x10,%ebx
decl %ecx
jne 1b
popl %esi
popl %ebx
leave
.cfi_adjust_cfa_offset -4
retl
.cfi_endproc
END(aesni_decrypt_cbc)
.ident "$FreeBSD$"
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