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|
;;
;; Copyright (c) 2012-2018, 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.
;;
;; In System V AMD64 ABI
;; calle saves: RBX, RBP, R12-R15
;; Windows x64 ABI
;; calle saves: RBX, RBP, RDI, RSI, RSP, R12-R15
;;
;; Linux/Windows clobbers: xmm0 - xmm15
;;
%include "include/os.asm"
%include "job_aes_hmac.asm"
%include "mb_mgr_datastruct.asm"
%include "include/reg_sizes.asm"
%include "include/memcpy.asm"
;%define DO_DBGPRINT
%include "include/dbgprint.asm"
extern sha256_ni
%ifdef LINUX
%define arg1 rdi
%define arg2 rsi
%define reg3 rcx
%define reg4 rdx
%else
%define arg1 rcx
%define arg2 rdx
%define reg3 rdi
%define reg4 rsi
%endif
%define state arg1
%define job arg2
%define len2 arg2
; idx needs to be in rbx, rbp, r13-r15
%define last_len rbp
%define idx rbp
%define p r11
%define start_offset r11
%define unused_lanes rbx
%define tmp4 rbx
%define job_rax rax
%define len rax
%define size_offset reg3
%define tmp2 reg3
%define lane reg4
%define extra_blocks r8
%define tmp r9
%define p2 r9
%define lane_data r10
%define bswap_xmm4 xmm4
struc STACK
_gpr_save: resq 4 ; rbx, rbp, rsi (win), rdi (win)
_rsp_save: resq 1
endstruc
section .data
default rel
align 16
byteswap:
dq 0x0405060700010203
dq 0x0c0d0e0f08090a0b
section .text
%ifdef SHA224
; JOB* submit_job_hmac_sha_224_ni_sse(MB_MGR_HMAC_SHA_256_OOO *state, JOB_AES_HMAC *job)
; arg 1 : state
; arg 2 : job
MKGLOBAL(submit_job_hmac_sha_224_ni_sse,function,internal)
submit_job_hmac_sha_224_ni_sse:
%else
; JOB* submit_job_hmac_sha_256_ni_sse(MB_MGR_HMAC_SHA_256_OOO *state, JOB_AES_HMAC *job)
; arg 1 : state
; arg 2 : job
MKGLOBAL(submit_job_hmac_sha_256_ni_sse,function,internal)
submit_job_hmac_sha_256_ni_sse:
%endif
mov rax, rsp
sub rsp, STACK_size
and rsp, -16
mov [rsp + _gpr_save + 8*0], rbx
mov [rsp + _gpr_save + 8*1], rbp
%ifndef LINUX
mov [rsp + _gpr_save + 8*2], rsi
mov [rsp + _gpr_save + 8*3], rdi
%endif
mov [rsp + _rsp_save], rax ; original SP
DBGPRINTL "enter sha256-ni-sse submit"
mov unused_lanes, [state + _unused_lanes_sha256]
movzx lane, BYTE(unused_lanes)
DBGPRINTL64 "lane: ", lane
shr unused_lanes, 8
imul lane_data, lane, _HMAC_SHA1_LANE_DATA_size ; SHA1 & SHA256 lane data is the same
lea lane_data, [state + _ldata_sha256 + lane_data]
mov [state + _unused_lanes_sha256], unused_lanes
mov len, [job + _msg_len_to_hash_in_bytes]
DBGPRINTL64 "length: ", len
mov tmp, len
shr tmp, 6 ; divide by 64, len in terms of blocks
mov [lane_data + _job_in_lane], job
mov dword [lane_data + _outer_done], 0
mov [state + _lens_sha256 + 2*lane], WORD(tmp)
mov last_len, len
and last_len, 63
lea extra_blocks, [last_len + 9 + 63]
shr extra_blocks, 6
mov [lane_data + _extra_blocks], DWORD(extra_blocks)
mov p, [job + _src]
add p, [job + _hash_start_src_offset_in_bytes]
mov [state + _args_data_ptr_sha256 + 8*lane], p
cmp len, 64
jb copy_lt64
fast_copy:
add p, len
movdqu xmm0, [p - 64 + 0*16]
movdqu xmm1, [p - 64 + 1*16]
movdqu xmm2, [p - 64 + 2*16]
movdqu xmm3, [p - 64 + 3*16]
movdqa [lane_data + _extra_block + 0*16], xmm0
movdqa [lane_data + _extra_block + 1*16], xmm1
movdqa [lane_data + _extra_block + 2*16], xmm2
movdqa [lane_data + _extra_block + 3*16], xmm3
end_fast_copy:
mov size_offset, extra_blocks
shl size_offset, 6
sub size_offset, last_len
add size_offset, 64-8
mov [lane_data + _size_offset], DWORD(size_offset)
mov start_offset, 64
sub start_offset, last_len
mov [lane_data + _start_offset], DWORD(start_offset)
lea tmp, [8*64 + 8*len]
bswap tmp
mov [lane_data + _extra_block + size_offset], tmp
mov tmp, [job + _auth_key_xor_ipad]
movdqu xmm0, [tmp]
movdqu xmm1, [tmp + 4*4]
%if SHA256NI_DIGEST_ROW_SIZE != 32
%error "Below code has been optimized for SHA256NI_DIGEST_ROW_SIZE = 32!"
%endif
lea tmp, [lane*8] ; x8 here plus x4 scale factor give x32
movdqu [state + _args_digest_sha256 + tmp*4], xmm0
movdqu [state + _args_digest_sha256 + tmp*4 + 4*4], xmm1
DBGPRINTL "args digest:"
DBGPRINT_XMM xmm0
DBGPRINT_XMM xmm1
test len, ~63
jnz ge64_bytes
lt64_bytes:
mov [state + _lens_sha256 + 2*lane], WORD(extra_blocks)
lea tmp, [lane_data + _extra_block + start_offset]
mov [state + _args_data_ptr_sha256 + 8*lane], tmp
mov dword [lane_data + _extra_blocks], 0
ge64_bytes:
cmp unused_lanes, 0xff
jne return_null
jmp start_loop
align 16
start_loop:
; Find min length - only two lanes available
xor len2, len2
mov tmp, 0x10000
mov WORD(len2), word [state + _lens_sha256 + 0*2] ; [0:15] - lane 0 length, [16:31] - lane index (0)
mov WORD(tmp), word [state + _lens_sha256 + 1*2] ; [0:15] - lane 1 length, [16:31] - lane index (1)
cmp WORD(len2), WORD(tmp)
cmovg DWORD(len2), DWORD(tmp) ; move if lane 0 length is greater than lane 1 length
mov idx, len2 ; retrieve index & length from [16:31] and [0:15] bit fields
shr DWORD(idx), 16
and DWORD(len2), 0xffff
je len_is_0
sub word [state + _lens_sha256 + 0*2], WORD(len2)
sub word [state + _lens_sha256 + 1*2], WORD(len2)
; "state" and "args" are the same address, arg1
; len is arg2
call sha256_ni
; state is intact
len_is_0:
; process completed job "idx"
imul lane_data, idx, _HMAC_SHA1_LANE_DATA_size
lea lane_data, [state + _ldata_sha256 + lane_data]
mov DWORD(extra_blocks), [lane_data + _extra_blocks]
cmp extra_blocks, 0
jne proc_extra_blocks
movdqa bswap_xmm4, [rel byteswap]
cmp dword [lane_data + _outer_done], 0
jne end_loop
proc_outer:
mov dword [lane_data + _outer_done], 1
mov DWORD(size_offset), [lane_data + _size_offset]
mov qword [lane_data + _extra_block + size_offset], 0
mov word [state + _lens_sha256 + 2*idx], 1
lea tmp, [lane_data + _outer_block]
mov job, [lane_data + _job_in_lane]
mov [state + _args_data_ptr_sha256 + PTR_SZ*idx], tmp
%if SHA256NI_DIGEST_ROW_SIZE != 32
%error "Below code has been optimized for SHA256NI_DIGEST_ROW_SIZE = 32!"
%endif
lea tmp4, [idx*8] ; x8 here + scale factor x4 below give x32
movdqu xmm0, [state + _args_digest_sha256 + tmp4*4]
movdqu xmm1, [state + _args_digest_sha256 + tmp4*4 + 4*4]
pshufb xmm0, bswap_xmm4
pshufb xmm1, bswap_xmm4
movdqa [lane_data + _outer_block], xmm0
movdqa [lane_data + _outer_block + 4*4], xmm1
%ifdef SHA224
;; overwrite top 4 bytes with 0x80
mov dword [lane_data + _outer_block + 7*4], 0x80
%endif
mov tmp, [job + _auth_key_xor_opad]
movdqu xmm0, [tmp]
movdqu xmm1, [tmp + 4*4]
movdqu [state + _args_digest_sha256 + tmp4*4], xmm0
movdqu [state + _args_digest_sha256 + tmp4*4 + 4*4], xmm1
jmp start_loop
align 16
proc_extra_blocks:
mov DWORD(start_offset), [lane_data + _start_offset]
mov [state + _lens_sha256 + 2*idx], WORD(extra_blocks)
lea tmp, [lane_data + _extra_block + start_offset]
mov [state + _args_data_ptr_sha256 + PTR_SZ*idx], tmp
mov dword [lane_data + _extra_blocks], 0
jmp start_loop
align 16
copy_lt64:
;; less than one message block of data
;; beginning of source block
;; destination extrablock but backwards by len from where 0x80 pre-populated
;; p2 clobbers unused_lanes, undo before exit
lea p2, [lane_data + _extra_block + 64]
sub p2, len
memcpy_sse_64_1 p2, p, len, tmp4, tmp2, xmm0, xmm1, xmm2, xmm3
mov unused_lanes, [state + _unused_lanes_sha256]
jmp end_fast_copy
return_null:
xor job_rax, job_rax
jmp return
align 16
end_loop:
mov job_rax, [lane_data + _job_in_lane]
mov unused_lanes, [state + _unused_lanes_sha256]
mov qword [lane_data + _job_in_lane], 0
or dword [job_rax + _status], STS_COMPLETED_HMAC
shl unused_lanes, 8
or unused_lanes, idx
mov [state + _unused_lanes_sha256], unused_lanes
mov p, [job_rax + _auth_tag_output]
; copy 16 bytes for SHA256, 14 for SHA224
%if SHA256NI_DIGEST_ROW_SIZE != 32
%error "Below code has been optimized for SHA256NI_DIGEST_ROW_SIZE = 32!"
%endif
shl idx, 5
%ifdef SHA224
cmp qword [job_rax + _auth_tag_output_len_in_bytes], 14
jne copy_full_digest
%else
cmp qword [job_rax + _auth_tag_output_len_in_bytes], 16
jne copy_full_digest
%endif
movdqu xmm0, [state + _args_digest_sha256 + idx]
pshufb xmm0, bswap_xmm4
%ifdef SHA224
;; SHA224
movq [p + 0*4], xmm0
pextrd [p + 2*4], xmm0, 2
pextrw [p + 3*4], xmm0, 6
%else
;; SHA256
movdqu [p], xmm0
%endif
jmp clear_ret
copy_full_digest:
movdqu xmm0, [state + _args_digest_sha256 + idx]
movdqu xmm1, [state + _args_digest_sha256 + idx + 16]
pshufb xmm0, bswap_xmm4
pshufb xmm1, bswap_xmm4
%ifdef SHA224
;; SHA224
movdqu [p], xmm0
movq [p + 16], xmm1
pextrd [p + 16 + 8], xmm1, 2
%else
;; SHA256
movdqu [p], xmm0
movdqu [p + 16], xmm1
%endif
clear_ret:
%ifdef SAFE_DATA
pxor xmm0, xmm0
;; Clear digest, outer_block (28B/32B) and extra_block (64B) of returned job
movdqa [state + _args_digest_sha256 + idx], xmm0
movdqa [state + _args_digest_sha256 + idx + 16], xmm0
shr idx, 5 ;; Restore lane idx to 0 or 1
imul lane_data, idx, _HMAC_SHA1_LANE_DATA_size
lea lane_data, [state + _ldata_sha256 + lane_data]
;; Clear first 64 bytes of extra_block
%assign offset 0
%rep 4
movdqa [lane_data + _extra_block + offset], xmm0
%assign offset (offset + 16)
%endrep
;; Clear first 28 bytes (SHA-224) or 32 bytes (SHA-256) of outer_block
movdqa [lane_data + _outer_block], xmm0
%ifdef SHA224
mov qword [lane_data + _outer_block + 16], 0
mov dword [lane_data + _outer_block + 24], 0
%else
movdqa [lane_data + _outer_block + 16], xmm0
%endif
%endif ;; SAFE_DATA
return:
mov rbx, [rsp + _gpr_save + 8*0]
mov rbp, [rsp + _gpr_save + 8*1]
%ifndef LINUX
mov rsi, [rsp + _gpr_save + 8*2]
mov rdi, [rsp + _gpr_save + 8*3]
%endif
mov rsp, [rsp + _rsp_save] ; original SP
ret
%ifdef LINUX
section .note.GNU-stack noalloc noexec nowrite progbits
%endif
|