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abd80d3c5a
Length of data was not checked in implementation with AVX512+GFNI, at the start of the gf_Xvect_mad_avx512_gfni functions, resulting in buffer overflow if length was less than 64 bytes. Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
176 lines
4.3 KiB
NASM
176 lines
4.3 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; Copyright(c) 2023 Intel Corporation All rights reserved.
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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 conditions
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; are met:
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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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; * Redistributions in binary form must reproduce the above copyright
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; notice, this list of conditions and the following disclaimer in
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; the documentation and/or other materials provided with the
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; distribution.
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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 derived
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; from this software without specific prior written 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
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; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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; LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;
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;;; gf_vect_mad_avx512_gfni(len, vec, vec_i, mul_array, src, dest);
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;;;
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%include "reg_sizes.asm"
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%include "gf_vect_gfni.inc"
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%if AS_FEATURE_LEVEL >= 10
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%ifidn __OUTPUT_FORMAT__, elf64
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%define arg0 rdi
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%define arg1 rsi
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%define arg2 rdx
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%define arg3 rcx
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%define arg4 r8
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%define arg5 r9
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%define tmp r11
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%define func(x) x: endbranch
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%define FUNC_SAVE
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%define FUNC_RESTORE
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%endif
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%ifidn __OUTPUT_FORMAT__, win64
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%define arg0 rcx
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%define arg1 rdx
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%define arg2 r8
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%define arg3 r9
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%define arg4 r12 ; must be saved and loaded
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%define arg5 r13
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%define tmp r11
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%define stack_size 3*8
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%define arg(x) [rsp + stack_size + 8 + 8*x]
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%define func(x) proc_frame x
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%macro FUNC_SAVE 0
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sub rsp, stack_size
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mov [rsp + 0*8], r12
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mov [rsp + 1*8], r13
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end_prolog
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mov arg4, arg(4)
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mov arg5, arg(5)
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%endmacro
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%macro FUNC_RESTORE 0
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mov r12, [rsp + 0*8]
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mov r13, [rsp + 1*8]
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add rsp, stack_size
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%endmacro
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%endif
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;;; gf_vect_mad_avx512_gfni(len, vec, vec_i, mul_array, src, dest)
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%define len arg0
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%define vec arg1
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%define vec_i arg2
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%define mul_array arg3
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%define src arg4
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%define dest arg5
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%define pos rax
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%ifndef EC_ALIGNED_ADDR
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;;; Use Un-aligned load/store
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%define XLDR vmovdqu8
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%define XSTR vmovdqu8
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%else
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;;; Use Non-temporal load/stor
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%ifdef NO_NT_LDST
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%define XLDR vmovdqa64
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%define XSTR vmovdqa64
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%else
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%define XLDR vmovntdqa
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%define XSTR vmovntdq
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%endif
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%endif
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default rel
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[bits 64]
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section .text
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%define x0 zmm0
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%define xd zmm1
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%define xgft1 zmm2
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%define xret1 zmm3
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;;
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;; Encodes 64 bytes of a single source into 64 bytes (single parity disk)
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;;
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%macro ENCODE_64B 0-1
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%define %%KMASK %1
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%if %0 == 1
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vmovdqu8 x0{%%KMASK}, [src + pos] ;Get next source vector
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vmovdqu8 xd{%%KMASK}, [dest + pos] ;Get next dest vector
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%else
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XLDR x0, [src + pos] ;Get next source vector
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XLDR xd, [dest + pos] ;Get next dest vector
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%endif
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GF_MUL_XOR EVEX, x0, xgft1, xret1, xd
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%if %0 == 1
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vmovdqu8 [dest + pos]{%%KMASK}, xd
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%else
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XSTR [dest + pos], xd
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%endif
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%endmacro
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align 16
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mk_global gf_vect_mad_avx512_gfni, function
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func(gf_vect_mad_avx512_gfni)
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FUNC_SAVE
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xor pos, pos
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shl vec_i, 3 ;Multiply by 8
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vbroadcastf32x2 xgft1, [vec_i + mul_array]
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cmp len, 64
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jl .len_lt_64
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.loop64:
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ENCODE_64B
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add pos, 64 ;Loop on 64 bytes at a time
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sub len, 64
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cmp len, 64
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jge .loop64
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.len_lt_64:
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cmp len, 0
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jle .exit
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xor tmp, tmp
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bts tmp, len
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dec tmp
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kmovq k1, tmp
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ENCODE_64B k1
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.exit:
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vzeroupper
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FUNC_RESTORE
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ret
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endproc_frame
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%endif ; if AS_FEATURE_LEVEL >= 10
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