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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Copyright(c) 2021-2022 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.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
%include "sse_t1/gcm_sse.inc"
%include "include/gcm_common.inc"
%ifndef GCM_GMAC_API_SSE_INC
%define GCM_GMAC_API_SSE_INC
section .text
default rel
%ifdef GCM128_MODE
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;void ghash_pre_sse / ghash_sse_no_aesni
; (const void *key, struct gcm_key_data *key_data)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
%ifndef NO_AESNI
MKGLOBAL(ghash_pre_sse,function,)
ghash_pre_sse:
%else
MKGLOBAL(ghash_pre_sse_no_aesni,function,)
ghash_pre_sse_no_aesni:
%endif
endbranch64
;; Parameter is passed through register
%ifdef SAFE_PARAM
;; Reset imb_errno
IMB_ERR_CHECK_RESET
;; Check key != NULL
cmp arg1, 0
jz error_ghash_pre
;; Check key_data != NULL
cmp arg2, 0
jz error_ghash_pre
%endif
%ifidn __OUTPUT_FORMAT__, win64
push r14
mov r14, rsp
sub rsp, VARIABLE_OFFSET
and rsp, ~63 ; align rsp to 64 bytes
; only xmm6 needs to be maintained
movdqa [rsp + LOCAL_STORAGE + 0*16],xmm6
%endif
movdqu xmm6, [arg1]
pshufb xmm6, [rel SHUF_MASK]
;;;;;;;;;;;;;;; PRECOMPUTATION of HashKey<<1 mod poly from the HashKey;;;;;;;;;;;;;;;
movdqa xmm2, xmm6
psllq xmm6, 1
psrlq xmm2, 63
movdqa xmm1, xmm2
pslldq xmm2, 8
psrldq xmm1, 8
por xmm6, xmm2
;reduction
pshufd xmm2, xmm1, 00100100b
pcmpeqd xmm2, [rel TWOONE]
pand xmm2, [rel POLY]
pxor xmm6, xmm2 ; xmm6 holds the HashKey<<1 mod poly
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
movdqu [arg2 + HashKey], xmm6 ; store HashKey<<1 mod poly
PRECOMPUTE arg2, xmm6, xmm0, xmm1, xmm2, xmm3, xmm4, xmm5
%ifdef SAFE_DATA
clear_scratch_gps_asm
clear_scratch_xmms_sse_asm
%endif
%ifidn __OUTPUT_FORMAT__, win64
movdqu xmm6, [rsp + LOCAL_STORAGE + 0*16]
mov rsp, r14
pop r14
%endif
exit_ghash_pre:
ret
%ifdef SAFE_PARAM
error_ghash_pre:
;; Clear reg and imb_errno
IMB_ERR_CHECK_START rax
;; Check key != NULL
IMB_ERR_CHECK_NULL arg1, rax, IMB_ERR_NULL_KEY
;; Check key_data != NULL
IMB_ERR_CHECK_NULL arg2, rax, IMB_ERR_NULL_EXP_KEY
;; Set imb_errno
IMB_ERR_CHECK_END rax
jmp exit_ghash_pre
%endif
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;void ghash_sse / ghash_sse_no_aesni
; (const struct gcm_key_data *key_data,
; const void *in,
; const u64 in_len,
; void *io_tag,
; const u64 tag_len);
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
%ifndef NO_AESNI
MKGLOBAL(ghash_sse,function,)
ghash_sse:
%else
MKGLOBAL(ghash_sse_no_aesni,function,)
ghash_sse_no_aesni:
%endif
endbranch64
FUNC_SAVE
%ifdef SAFE_PARAM
;; Reset imb_errno
IMB_ERR_CHECK_RESET
;; Check key_data != NULL
cmp arg1, 0
jz error_ghash
;; Check in != NULL
cmp arg2, 0
jz error_ghash
;; Check in_len != 0
cmp arg3, 0
jz error_ghash
;; Check tag != NULL
cmp arg4, 0
jz error_ghash
;; Check tag_len != 0
cmp arg5, 0
jz error_ghash
%endif
;; copy tag to xmm0
movdqu xmm0, [arg4]
pshufb xmm0, [rel SHUF_MASK] ; perform a 16Byte swap
CALC_AAD_HASH arg2, arg3, xmm0, arg1, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, \
r10, r11, r12, r13, rax
pshufb xmm0, [rel SHUF_MASK] ; perform a 16Byte swap
simd_store_sse arg4, xmm0, arg5, r12, rax
exit_ghash:
FUNC_RESTORE
ret
%ifdef SAFE_PARAM
error_ghash:
;; Clear reg and imb_errno
IMB_ERR_CHECK_START rax
;; Check key_data != NULL
IMB_ERR_CHECK_NULL arg1, rax, IMB_ERR_NULL_EXP_KEY
;; Check in != NULL
IMB_ERR_CHECK_NULL arg2, rax, IMB_ERR_NULL_SRC
;; Check in_len != 0
IMB_ERR_CHECK_ZERO arg3, rax, IMB_ERR_AUTH_LEN
;; Check tag != NULL
IMB_ERR_CHECK_NULL arg4, rax, IMB_ERR_NULL_AUTH
;; Check tag_len != 0
IMB_ERR_CHECK_ZERO arg5, rax, IMB_ERR_AUTH_TAG_LEN
;; Set imb_errno
IMB_ERR_CHECK_END rax
jmp exit_ghash
%endif
%endif ;; GCM128_MODE
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;void imb_aes_gmac_update_128_sse / imb_aes_gmac_update_192_sse /
; aes_gmac_update_256_sse
; const struct gcm_key_data *key_data,
; struct gcm_context_data *context_data,
; const u8 *in,
; const u64 msg_len);
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
MKGLOBAL(GMAC_FN_NAME(update),function,)
GMAC_FN_NAME(update):
endbranch64
FUNC_SAVE
%ifdef SAFE_PARAM
;; Reset imb_errno
IMB_ERR_CHECK_RESET
%endif
;; Check if msg_len == 0
cmp arg4, 0
je exit_gmac_update
%ifdef SAFE_PARAM
;; Check key_data != NULL
cmp arg1, 0
jz error_gmac_update
;; Check context_data != NULL
cmp arg2, 0
jz error_gmac_update
;; Check in != NULL (msg_len != 0)
cmp arg3, 0
jz error_gmac_update
%endif
; Increment size of "AAD length" for GMAC
add [arg2 + AadLen], arg4
;; Deal with previous partial block
xor r11, r11
movdqu xmm13, [arg1 + HashKey]
movdqu xmm8, [arg2 + AadHash]
PARTIAL_BLOCK_GMAC arg1, arg2, arg3, arg4, r11, xmm8, xmm13
; CALC_AAD_HASH needs to deal with multiple of 16 bytes
sub arg4, r11
add arg3, r11
movq xmm7, arg4 ; Save remaining length
and arg4, -16 ; Get multiple of 16 bytes
or arg4, arg4
jz no_full_blocks
;; Calculate GHASH of this segment
CALC_AAD_HASH arg3, arg4, xmm8, arg1, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, \
r10, r11, r12, r13, rax
movdqu [arg2 + AadHash], xmm8 ; ctx_data.aad hash = aad_hash
no_full_blocks:
add arg3, arg4 ; Point at partial block
movq arg4, xmm7 ; Restore original remaining length
and arg4, 15
jz exit_gmac_update
; Save next partial block
mov [arg2 + PBlockLen], arg4
READ_SMALL_DATA_INPUT_SSE xmm1, arg3, arg4, r11, r12, r13
pshufb xmm1, [rel SHUF_MASK]
pxor xmm8, xmm1
movdqu [arg2 + AadHash], xmm8
exit_gmac_update:
FUNC_RESTORE
ret
%ifdef SAFE_PARAM
error_gmac_update:
;; Clear reg and imb_errno
IMB_ERR_CHECK_START rax
;; Check key_data != NULL
IMB_ERR_CHECK_NULL arg1, rax, IMB_ERR_NULL_EXP_KEY
;; Check context_data != NULL
IMB_ERR_CHECK_NULL arg2, rax, IMB_ERR_NULL_CTX
;; Check in != NULL (msg_len != 0)
IMB_ERR_CHECK_NULL arg3, rax, IMB_ERR_NULL_SRC
;; Set imb_errno
IMB_ERR_CHECK_END rax
jmp exit_gmac_update
%endif
mksection stack-noexec
%endif ; GCM_GMAC_API_SSE_INC
|
