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222 lines
6.1 KiB
ArmAsm
222 lines
6.1 KiB
ArmAsm
/*-
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* The white paper of AES-NI instructions can be downloaded from:
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* http://softwarecommunity.intel.com/isn/downloads/intelavx/AES-Instructions-Set_WP.pdf
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*
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* Copyright (C) 2008-2010, Intel Corporation
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* Author: Huang Ying <ying.huang@intel.com>
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* Vinodh Gopal <vinodh.gopal@intel.com>
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* Kahraman Akdemir
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the
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* distribution.
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*
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* - Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products
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* derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <machine/asmacros.h>
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.text
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ENTRY(_key_expansion_128)
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_key_expansion_256a:
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.cfi_startproc
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pshufd $0b11111111,%xmm1,%xmm1
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shufps $0b00010000,%xmm0,%xmm4
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pxor %xmm4,%xmm0
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shufps $0b10001100,%xmm0,%xmm4
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pxor %xmm4,%xmm0
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pxor %xmm1,%xmm0
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movaps %xmm0,(%rsi)
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addq $0x10,%rsi
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retq
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.cfi_endproc
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END(_key_expansion_128)
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ENTRY(_key_expansion_192a)
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.cfi_startproc
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pshufd $0b01010101,%xmm1,%xmm1
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shufps $0b00010000,%xmm0,%xmm4
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pxor %xmm4,%xmm0
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shufps $0b10001100,%xmm0,%xmm4
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pxor %xmm4,%xmm0
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pxor %xmm1,%xmm0
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movaps %xmm2,%xmm5
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movaps %xmm2,%xmm6
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pslldq $4,%xmm5
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pshufd $0b11111111,%xmm0,%xmm3
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pxor %xmm3,%xmm2
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pxor %xmm5,%xmm2
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movaps %xmm0,%xmm1
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shufps $0b01000100,%xmm0,%xmm6
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movaps %xmm6,(%rsi)
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shufps $0b01001110,%xmm2,%xmm1
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movaps %xmm1,0x10(%rsi)
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addq $0x20,%rsi
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retq
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.cfi_endproc
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END(_key_expansion_192a)
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ENTRY(_key_expansion_192b)
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.cfi_startproc
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pshufd $0b01010101,%xmm1,%xmm1
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shufps $0b00010000,%xmm0,%xmm4
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pxor %xmm4,%xmm0
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shufps $0b10001100,%xmm0,%xmm4
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pxor %xmm4,%xmm0
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pxor %xmm1,%xmm0
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movaps %xmm2,%xmm5
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pslldq $4,%xmm5
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pshufd $0b11111111,%xmm0,%xmm3
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pxor %xmm3,%xmm2
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pxor %xmm5,%xmm2
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movaps %xmm0,(%rsi)
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addq $0x10,%rsi
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retq
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.cfi_endproc
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END(_key_expansion_192b)
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ENTRY(_key_expansion_256b)
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.cfi_startproc
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pshufd $0b10101010,%xmm1,%xmm1
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shufps $0b00010000,%xmm2,%xmm4
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pxor %xmm4,%xmm2
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shufps $0b10001100,%xmm2,%xmm4
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pxor %xmm4,%xmm2
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pxor %xmm1,%xmm2
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movaps %xmm2,(%rsi)
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addq $0x10,%rsi
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retq
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.cfi_endproc
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END(_key_expansion_256b)
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ENTRY(aesni_set_enckey)
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.cfi_startproc
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movups (%rdi),%xmm0 # user key (first 16 bytes)
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movaps %xmm0,(%rsi)
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addq $0x10,%rsi # key addr
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pxor %xmm4,%xmm4 # xmm4 is assumed 0 in _key_expansion_x
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cmpl $12,%edx
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jb .Lenc_key128
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je .Lenc_key192
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movups 0x10(%rdi),%xmm2 # other user key
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movaps %xmm2,(%rsi)
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addq $0x10,%rsi
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aeskeygenassist $0x1,%xmm2,%xmm1 # round 1
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call _key_expansion_256a
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aeskeygenassist $0x1,%xmm0,%xmm1
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call _key_expansion_256b
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aeskeygenassist $0x2,%xmm2,%xmm1 # round 2
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call _key_expansion_256a
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aeskeygenassist $0x2,%xmm0,%xmm1
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call _key_expansion_256b
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aeskeygenassist $0x4,%xmm2,%xmm1 # round 3
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call _key_expansion_256a
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aeskeygenassist $0x4,%xmm0,%xmm1
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call _key_expansion_256b
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aeskeygenassist $0x8,%xmm2,%xmm1 # round 4
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call _key_expansion_256a
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aeskeygenassist $0x8,%xmm0,%xmm1
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call _key_expansion_256b
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aeskeygenassist $0x10,%xmm2,%xmm1 # round 5
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call _key_expansion_256a
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aeskeygenassist $0x10,%xmm0,%xmm1
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call _key_expansion_256b
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aeskeygenassist $0x20,%xmm2,%xmm1 # round 6
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call _key_expansion_256a
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aeskeygenassist $0x20,%xmm0,%xmm1
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call _key_expansion_256b
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aeskeygenassist $0x40,%xmm2,%xmm1 # round 7
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call _key_expansion_256a
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retq
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.Lenc_key192:
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movq 0x10(%rdi),%xmm2 # other user key
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aeskeygenassist $0x1,%xmm2,%xmm1 # round 1
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call _key_expansion_192a
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aeskeygenassist $0x2,%xmm2,%xmm1 # round 2
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call _key_expansion_192b
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aeskeygenassist $0x4,%xmm2,%xmm1 # round 3
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call _key_expansion_192a
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aeskeygenassist $0x8,%xmm2,%xmm1 # round 4
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call _key_expansion_192b
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aeskeygenassist $0x10,%xmm2,%xmm1 # round 5
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call _key_expansion_192a
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aeskeygenassist $0x20,%xmm2,%xmm1 # round 6
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call _key_expansion_192b
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aeskeygenassist $0x40,%xmm2,%xmm1 # round 7
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call _key_expansion_192a
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aeskeygenassist $0x80,%xmm2,%xmm1 # round 8
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call _key_expansion_192b
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retq
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.Lenc_key128:
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aeskeygenassist $0x1,%xmm0,%xmm1 # round 1
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call _key_expansion_128
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aeskeygenassist $0x2,%xmm0,%xmm1 # round 2
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call _key_expansion_128
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aeskeygenassist $0x4,%xmm0,%xmm1 # round 3
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call _key_expansion_128
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aeskeygenassist $0x8,%xmm0,%xmm1 # round 4
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call _key_expansion_128
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aeskeygenassist $0x10,%xmm0,%xmm1 # round 5
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call _key_expansion_128
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aeskeygenassist $0x20,%xmm0,%xmm1 # round 6
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call _key_expansion_128
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aeskeygenassist $0x40,%xmm0,%xmm1 # round 7
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call _key_expansion_128
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aeskeygenassist $0x80,%xmm0,%xmm1 # round 8
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call _key_expansion_128
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aeskeygenassist $0x1b,%xmm0,%xmm1 # round 9
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call _key_expansion_128
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aeskeygenassist $0x36,%xmm0,%xmm1 # round 10
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call _key_expansion_128
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retq
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.cfi_endproc
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END(aesni_set_enckey)
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ENTRY(aesni_set_deckey)
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.cfi_startproc
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movslq %edx,%rax
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shlq $4,%rax
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addq %rax,%rdi
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movdqa (%rdi),%xmm0
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movdqa %xmm0,(%rsi)
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decl %edx
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1:
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addq $0x10,%rsi
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subq $0x10,%rdi
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aesimc (%rdi),%xmm1
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movdqa %xmm1,(%rsi)
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decl %edx
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jne 1b
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addq $0x10,%rsi
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subq $0x10,%rdi
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movdqa (%rdi),%xmm0
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movdqa %xmm0,(%rsi)
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retq
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.cfi_endproc
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END(aesni_set_deckey)
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