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|
;;
;; Copyright (c) 2019, Intel Corporation
;;
;; 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.
;;
%ifndef _AES_COMMON_ASM_
%define _AES_COMMON_ASM_
%include "include/reg_sizes.asm"
;; =============================================================================
;; Generic macro to produce code that executes %%OPCODE instruction
;; on selected number of AES blocks (16 bytes long ) between 0 and 16.
;; All three operands of the instruction come from registers.
;; Note: if 3 blocks are left at the end instruction is produced to operate all
;; 4 blocks (full width of ZMM)
%macro ZMM_OPCODE3_DSTR_SRC1R_SRC2R_BLOCKS_0_16 14
%define %%NUM_BLOCKS %1 ; [in] numerical value, number of AES blocks (0 to 16)
%define %%OPCODE %2 ; [in] instruction name
%define %%DST0 %3 ; [out] destination ZMM register
%define %%DST1 %4 ; [out] destination ZMM register
%define %%DST2 %5 ; [out] destination ZMM register
%define %%DST3 %6 ; [out] destination ZMM register
%define %%SRC1_0 %7 ; [in] source 1 ZMM register
%define %%SRC1_1 %8 ; [in] source 1 ZMM register
%define %%SRC1_2 %9 ; [in] source 1 ZMM register
%define %%SRC1_3 %10 ; [in] source 1 ZMM register
%define %%SRC2_0 %11 ; [in] source 2 ZMM register
%define %%SRC2_1 %12 ; [in] source 2 ZMM register
%define %%SRC2_2 %13 ; [in] source 2 ZMM register
%define %%SRC2_3 %14 ; [in] source 2 ZMM register
%assign reg_idx 0
%assign blocks_left %%NUM_BLOCKS
%rep (%%NUM_BLOCKS / 4)
%xdefine %%DSTREG %%DST %+ reg_idx
%xdefine %%SRC1REG %%SRC1_ %+ reg_idx
%xdefine %%SRC2REG %%SRC2_ %+ reg_idx
%%OPCODE %%DSTREG, %%SRC1REG, %%SRC2REG
%undef %%DSTREG
%undef %%SRC1REG
%undef %%SRC2REG
%assign reg_idx (reg_idx + 1)
%assign blocks_left (blocks_left - 4)
%endrep
%xdefine %%DSTREG %%DST %+ reg_idx
%xdefine %%SRC1REG %%SRC1_ %+ reg_idx
%xdefine %%SRC2REG %%SRC2_ %+ reg_idx
%if blocks_left == 1
%%OPCODE XWORD(%%DSTREG), XWORD(%%SRC1REG), XWORD(%%SRC2REG)
%elif blocks_left == 2
%%OPCODE YWORD(%%DSTREG), YWORD(%%SRC1REG), YWORD(%%SRC2REG)
%elif blocks_left == 3
%%OPCODE %%DSTREG, %%SRC1REG, %%SRC2REG
%endif
%endmacro
;; =============================================================================
;; Loads specified number of AES blocks into ZMM registers
;; %%FLAGS are optional and only affect behavior when 3 trailing blocks are left
;; - if %%FlAGS not provided then exactly 3 blocks are loaded (move and insert)
;; - if "load_4_instead_of_3" option is passed then 4 blocks are loaded
%macro ZMM_LOAD_BLOCKS_0_16 7-8
%define %%NUM_BLOCKS %1 ; [in] numerical value, number of AES blocks (0 to 16)
%define %%INP %2 ; [in] input data pointer to read from
%define %%DATA_OFFSET %3 ; [in] offset to the output pointer (GP or numerical)
%define %%DST0 %4 ; [out] ZMM register with loaded data
%define %%DST1 %5 ; [out] ZMM register with loaded data
%define %%DST2 %6 ; [out] ZMM register with loaded data
%define %%DST3 %7 ; [out] ZMM register with loaded data
%define %%FLAGS %8 ; [in] optional "load_4_instead_of_3"
%assign src_offset 0
%assign dst_idx 0
%rep (%%NUM_BLOCKS / 4)
%xdefine %%DSTREG %%DST %+ dst_idx
vmovdqu8 %%DSTREG, [%%INP + %%DATA_OFFSET + src_offset]
%undef %%DSTREG
%assign src_offset (src_offset + 64)
%assign dst_idx (dst_idx + 1)
%endrep
%assign blocks_left (%%NUM_BLOCKS % 4)
%xdefine %%DSTREG %%DST %+ dst_idx
%if blocks_left == 1
vmovdqu8 XWORD(%%DSTREG), [%%INP + %%DATA_OFFSET + src_offset]
%elif blocks_left == 2
vmovdqu8 YWORD(%%DSTREG), [%%INP + %%DATA_OFFSET + src_offset]
%elif blocks_left == 3
%ifidn %%FLAGS, load_4_instead_of_3
vmovdqu8 %%DSTREG, [%%INP + %%DATA_OFFSET + src_offset]
%else
vmovdqu8 YWORD(%%DSTREG), [%%INP + %%DATA_OFFSET + src_offset]
vinserti64x2 %%DSTREG, [%%INP + %%DATA_OFFSET + src_offset + 32], 2
%endif
%endif
%endmacro
;; =============================================================================
;; Loads specified number of AES blocks into ZMM registers using mask register
;; for the last loaded register (xmm, ymm or zmm).
;; Loads take place at 1 byte granularity.
%macro ZMM_LOAD_MASKED_BLOCKS_0_16 8
%define %%NUM_BLOCKS %1 ; [in] numerical value, number of AES blocks (0 to 16)
%define %%INP %2 ; [in] input data pointer to read from
%define %%DATA_OFFSET %3 ; [in] offset to the output pointer (GP or numerical)
%define %%DST0 %4 ; [out] ZMM register with loaded data
%define %%DST1 %5 ; [out] ZMM register with loaded data
%define %%DST2 %6 ; [out] ZMM register with loaded data
%define %%DST3 %7 ; [out] ZMM register with loaded data
%define %%MASK %8 ; [in] mask register
%assign src_offset 0
%assign dst_idx 0
%assign blocks_left %%NUM_BLOCKS
%if %%NUM_BLOCKS > 0
%rep (((%%NUM_BLOCKS + 3) / 4) - 1)
%xdefine %%DSTREG %%DST %+ dst_idx
vmovdqu8 %%DSTREG, [%%INP + %%DATA_OFFSET + src_offset]
%undef %%DSTREG
%assign src_offset (src_offset + 64)
%assign dst_idx (dst_idx + 1)
%assign blocks_left (blocks_left - 4)
%endrep
%endif ; %if %%NUM_BLOCKS > 0
%xdefine %%DSTREG %%DST %+ dst_idx
%if blocks_left == 1
vmovdqu8 XWORD(%%DSTREG){%%MASK}{z}, [%%INP + %%DATA_OFFSET + src_offset]
%elif blocks_left == 2
vmovdqu8 YWORD(%%DSTREG){%%MASK}{z}, [%%INP + %%DATA_OFFSET + src_offset]
%elif (blocks_left == 3 || blocks_left == 4)
vmovdqu8 %%DSTREG{%%MASK}{z}, [%%INP + %%DATA_OFFSET + src_offset]
%endif
%endmacro
;; =============================================================================
;; Stores specified number of AES blocks from ZMM registers
%macro ZMM_STORE_BLOCKS_0_16 7
%define %%NUM_BLOCKS %1 ; [in] numerical value, number of AES blocks (0 to 16)
%define %%OUTP %2 ; [in] output data pointer to write to
%define %%DATA_OFFSET %3 ; [in] offset to the output pointer (GP or numerical)
%define %%SRC0 %4 ; [in] ZMM register with data to store
%define %%SRC1 %5 ; [in] ZMM register with data to store
%define %%SRC2 %6 ; [in] ZMM register with data to store
%define %%SRC3 %7 ; [in] ZMM register with data to store
%assign dst_offset 0
%assign src_idx 0
%rep (%%NUM_BLOCKS / 4)
%xdefine %%SRCREG %%SRC %+ src_idx
vmovdqu8 [%%OUTP + %%DATA_OFFSET + dst_offset], %%SRCREG
%undef %%SRCREG
%assign dst_offset (dst_offset + 64)
%assign src_idx (src_idx + 1)
%endrep
%assign blocks_left (%%NUM_BLOCKS % 4)
%xdefine %%SRCREG %%SRC %+ src_idx
%if blocks_left == 1
vmovdqu8 [%%OUTP + %%DATA_OFFSET + dst_offset], XWORD(%%SRCREG)
%elif blocks_left == 2
vmovdqu8 [%%OUTP + %%DATA_OFFSET + dst_offset], YWORD(%%SRCREG)
%elif blocks_left == 3
vmovdqu8 [%%OUTP + %%DATA_OFFSET + dst_offset], YWORD(%%SRCREG)
vextracti32x4 [%%OUTP + %%DATA_OFFSET + dst_offset + 32], %%SRCREG, 2
%endif
%endmacro
;; =============================================================================
;; Stores specified number of AES blocks from ZMM registers with mask register
;; for the last loaded register (xmm, ymm or zmm).
;; Stores take place at 1 byte granularity.
%macro ZMM_STORE_MASKED_BLOCKS_0_16 8
%define %%NUM_BLOCKS %1 ; [in] numerical value, number of AES blocks (0 to 16)
%define %%OUTP %2 ; [in] output data pointer to write to
%define %%DATA_OFFSET %3 ; [in] offset to the output pointer (GP or numerical)
%define %%SRC0 %4 ; [in] ZMM register with data to store
%define %%SRC1 %5 ; [in] ZMM register with data to store
%define %%SRC2 %6 ; [in] ZMM register with data to store
%define %%SRC3 %7 ; [in] ZMM register with data to store
%define %%MASK %8 ; [in] mask register
%assign dst_offset 0
%assign src_idx 0
%assign blocks_left %%NUM_BLOCKS
%if %%NUM_BLOCKS > 0
%rep (((%%NUM_BLOCKS + 3) / 4) - 1)
%xdefine %%SRCREG %%SRC %+ src_idx
vmovdqu8 [%%OUTP + %%DATA_OFFSET + dst_offset], %%SRCREG
%undef %%SRCREG
%assign dst_offset (dst_offset + 64)
%assign src_idx (src_idx + 1)
%assign blocks_left (blocks_left - 4)
%endrep
%endif ; %if %%NUM_BLOCKS > 0
%xdefine %%SRCREG %%SRC %+ src_idx
%if blocks_left == 1
vmovdqu8 [%%OUTP + %%DATA_OFFSET + dst_offset]{%%MASK}, XWORD(%%SRCREG)
%elif blocks_left == 2
vmovdqu8 [%%OUTP + %%DATA_OFFSET + dst_offset]{%%MASK}, YWORD(%%SRCREG)
%elif (blocks_left == 3 || blocks_left == 4)
vmovdqu8 [%%OUTP + %%DATA_OFFSET + dst_offset]{%%MASK}, %%SRCREG
%endif
%endmacro
;;; ===========================================================================
;;; Handles AES encryption rounds
;;; It handles special cases: the last and first rounds
;;; Optionally, it performs XOR with data after the last AES round.
;;; Uses NROUNDS parameterto check what needs to be done for the current round.
;;; If 3 blocks are trailing then operation on whole ZMM is performed (4 blocks).
%macro ZMM_AESENC_ROUND_BLOCKS_0_16 12
%define %%L0B0_3 %1 ; [in/out] zmm; blocks 0 to 3
%define %%L0B4_7 %2 ; [in/out] zmm; blocks 4 to 7
%define %%L0B8_11 %3 ; [in/out] zmm; blocks 8 to 11
%define %%L0B12_15 %4 ; [in/out] zmm; blocks 12 to 15
%define %%KEY %5 ; [in] zmm containing round key
%define %%ROUND %6 ; [in] round number
%define %%D0_3 %7 ; [in] zmm or no_data; plain/cipher text blocks 0-3
%define %%D4_7 %8 ; [in] zmm or no_data; plain/cipher text blocks 4-7
%define %%D8_11 %9 ; [in] zmm or no_data; plain/cipher text blocks 8-11
%define %%D12_15 %10 ; [in] zmm or no_data; plain/cipher text blocks 12-15
%define %%NUMBL %11 ; [in] number of blocks; numerical value
%define %%NROUNDS %12 ; [in] number of rounds; numerical value
;;; === first AES round
%if (%%ROUND < 1)
;; round 0
ZMM_OPCODE3_DSTR_SRC1R_SRC2R_BLOCKS_0_16 %%NUMBL, vpxorq, \
%%L0B0_3, %%L0B4_7, %%L0B8_11, %%L0B12_15, \
%%L0B0_3, %%L0B4_7, %%L0B8_11, %%L0B12_15, \
%%KEY, %%KEY, %%KEY, %%KEY
%endif ; ROUND 0
;;; === middle AES rounds
%if (%%ROUND >= 1 && %%ROUND <= %%NROUNDS)
;; rounds 1 to 9/11/13
ZMM_OPCODE3_DSTR_SRC1R_SRC2R_BLOCKS_0_16 %%NUMBL, vaesenc, \
%%L0B0_3, %%L0B4_7, %%L0B8_11, %%L0B12_15, \
%%L0B0_3, %%L0B4_7, %%L0B8_11, %%L0B12_15, \
%%KEY, %%KEY, %%KEY, %%KEY
%endif ; rounds 1 to 9/11/13
;;; === last AES round
%if (%%ROUND > %%NROUNDS)
;; the last round - mix enclast with text xor's
ZMM_OPCODE3_DSTR_SRC1R_SRC2R_BLOCKS_0_16 %%NUMBL, vaesenclast, \
%%L0B0_3, %%L0B4_7, %%L0B8_11, %%L0B12_15, \
%%L0B0_3, %%L0B4_7, %%L0B8_11, %%L0B12_15, \
%%KEY, %%KEY, %%KEY, %%KEY
;;; === XOR with data
%ifnidn %%D0_3, no_data
%ifnidn %%D4_7, no_data
%ifnidn %%D8_11, no_data
%ifnidn %%D12_15, no_data
ZMM_OPCODE3_DSTR_SRC1R_SRC2R_BLOCKS_0_16 %%NUMBL, vpxorq, \
%%L0B0_3, %%L0B4_7, %%L0B8_11, %%L0B12_15, \
%%L0B0_3, %%L0B4_7, %%L0B8_11, %%L0B12_15, \
%%D0_3, %%D4_7, %%D8_11, %%D12_15
%endif ; !no_data
%endif ; !no_data
%endif ; !no_data
%endif ; !no_data
%endif ; The last round
%endmacro
;;; ===========================================================================
;;; Handles AES decryption rounds
;;; It handles special cases: the last and first rounds
;;; Optionally, it performs XOR with data after the last AES round.
;;; Uses NROUNDS parameter to check what needs to be done for the current round.
;;; If 3 blocks are trailing then operation on whole ZMM is performed (4 blocks).
%macro ZMM_AESDEC_ROUND_BLOCKS_0_16 12
%define %%L0B0_3 %1 ; [in/out] zmm; blocks 0 to 3
%define %%L0B4_7 %2 ; [in/out] zmm; blocks 4 to 7
%define %%L0B8_11 %3 ; [in/out] zmm; blocks 8 to 11
%define %%L0B12_15 %4 ; [in/out] zmm; blocks 12 to 15
%define %%KEY %5 ; [in] zmm containing round key
%define %%ROUND %6 ; [in] round number
%define %%D0_3 %7 ; [in] zmm or no_data; cipher text blocks 0-3
%define %%D4_7 %8 ; [in] zmm or no_data; cipher text blocks 4-7
%define %%D8_11 %9 ; [in] zmm or no_data; cipher text blocks 8-11
%define %%D12_15 %10 ; [in] zmm or no_data; cipher text blocks 12-15
%define %%NUMBL %11 ; [in] number of blocks; numerical value
%define %%NROUNDS %12 ; [in] number of rounds; numerical value
;;; === first AES round
%if (%%ROUND < 1)
;; round 0
ZMM_OPCODE3_DSTR_SRC1R_SRC2R_BLOCKS_0_16 %%NUMBL, vpxorq, \
%%L0B0_3, %%L0B4_7, %%L0B8_11, %%L0B12_15, \
%%L0B0_3, %%L0B4_7, %%L0B8_11, %%L0B12_15, \
%%KEY, %%KEY, %%KEY, %%KEY
%endif ; ROUND 0
;;; === middle AES rounds
%if (%%ROUND >= 1 && %%ROUND <= %%NROUNDS)
;; rounds 1 to 9/11/13
ZMM_OPCODE3_DSTR_SRC1R_SRC2R_BLOCKS_0_16 %%NUMBL, vaesdec, \
%%L0B0_3, %%L0B4_7, %%L0B8_11, %%L0B12_15, \
%%L0B0_3, %%L0B4_7, %%L0B8_11, %%L0B12_15, \
%%KEY, %%KEY, %%KEY, %%KEY
%endif ; rounds 1 to 9/11/13
;;; === last AES round
%if (%%ROUND > %%NROUNDS)
;; the last round - mix enclast with text xor's
ZMM_OPCODE3_DSTR_SRC1R_SRC2R_BLOCKS_0_16 %%NUMBL, vaesdeclast, \
%%L0B0_3, %%L0B4_7, %%L0B8_11, %%L0B12_15, \
%%L0B0_3, %%L0B4_7, %%L0B8_11, %%L0B12_15, \
%%KEY, %%KEY, %%KEY, %%KEY
;;; === XOR with data
%ifnidn %%D0_3, no_data
%ifnidn %%D4_7, no_data
%ifnidn %%D8_11, no_data
%ifnidn %%D12_15, no_data
ZMM_OPCODE3_DSTR_SRC1R_SRC2R_BLOCKS_0_16 %%NUMBL, vpxorq, \
%%L0B0_3, %%L0B4_7, %%L0B8_11, %%L0B12_15, \
%%L0B0_3, %%L0B4_7, %%L0B8_11, %%L0B12_15, \
%%D0_3, %%D4_7, %%D8_11, %%D12_15
%endif ; !no_data
%endif ; !no_data
%endif ; !no_data
%endif ; !no_data
%endif ; The last round
%endmacro
%endif ;; _AES_COMMON_ASM
|
