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/**************************************************************
Copyright (c) 2019 Huawei Technologies Co., Ltd.
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 Huawei 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.
**********************************************************************/
.text
.global gf_vect_mul_neon
.type gf_vect_mul_neon, %function
/* arguments */
x_len .req x0
x_tbl .req x1
x_src .req x2
x_dest .req x3
/* returns */
w_ret .req w0
/* local variables */
x_dest1 .req x_dest
x_src_end .req x4
x_tmp .req x5
/* vectors */
v_mask0f .req v0
v_gft1_lo .req v2
v_gft1_hi .req v3
q_gft1_lo .req q2
q_gft1_hi .req q3
v_data_0 .req v16
v_data_1 .req v17
v_data_2 .req v18
v_data_3 .req v19
v_data_4 .req v20
v_data_5 .req v21
v_data_6 .req v22
v_data_7 .req v23
q_data_0 .req q16
q_data_1 .req q17
q_data_2 .req q18
q_data_3 .req q19
q_data_4 .req q20
q_data_5 .req q21
q_data_6 .req q22
q_data_7 .req q23
v_data_0_lo .req v24
v_data_1_lo .req v25
v_data_2_lo .req v26
v_data_3_lo .req v27
v_data_4_lo .req v28
v_data_5_lo .req v29
v_data_6_lo .req v30
v_data_7_lo .req v31
v_data_0_hi .req v_data_0
v_data_1_hi .req v_data_1
v_data_2_hi .req v_data_2
v_data_3_hi .req v_data_3
v_data_4_hi .req v_data_4
v_data_5_hi .req v_data_5
v_data_6_hi .req v_data_6
v_data_7_hi .req v_data_7
gf_vect_mul_neon:
/* less than 32 bytes, return_fail */
cmp x_len, #32
blt .return_fail
movi v_mask0f.16b, #0x0f
add x_src_end, x_src, x_len
ldr q_gft1_lo, [x_tbl]
ldr q_gft1_hi, [x_tbl, #16]
.Lloop128_init:
/* less than 128 bytes, goto Lloop16_init */
cmp x_len, #128
blt .Lloop32_init
/* save d8 ~ d15 to stack */
sub sp, sp, #64
stp d8, d9, [sp]
stp d10, d11, [sp, #16]
stp d12, d13, [sp, #32]
stp d14, d15, [sp, #48]
sub x_src_end, x_src_end, #128
.Lloop128:
ldr q_data_0, [x_src, #16*0]
ldr q_data_1, [x_src, #16*1]
ldr q_data_2, [x_src, #16*2]
ldr q_data_3, [x_src, #16*3]
ldr q_data_4, [x_src, #16*4]
ldr q_data_5, [x_src, #16*5]
ldr q_data_6, [x_src, #16*6]
ldr q_data_7, [x_src, #16*7]
and v_data_0_lo.16b, v_data_0.16b, v_mask0f.16b
and v_data_1_lo.16b, v_data_1.16b, v_mask0f.16b
and v_data_2_lo.16b, v_data_2.16b, v_mask0f.16b
and v_data_3_lo.16b, v_data_3.16b, v_mask0f.16b
and v_data_4_lo.16b, v_data_4.16b, v_mask0f.16b
and v_data_5_lo.16b, v_data_5.16b, v_mask0f.16b
and v_data_6_lo.16b, v_data_6.16b, v_mask0f.16b
and v_data_7_lo.16b, v_data_7.16b, v_mask0f.16b
ushr v_data_0_hi.16b, v_data_0.16b, #4
ushr v_data_1_hi.16b, v_data_1.16b, #4
ushr v_data_2_hi.16b, v_data_2.16b, #4
ushr v_data_3_hi.16b, v_data_3.16b, #4
ushr v_data_4_hi.16b, v_data_4.16b, #4
ushr v_data_5_hi.16b, v_data_5.16b, #4
ushr v_data_6_hi.16b, v_data_6.16b, #4
ushr v_data_7_hi.16b, v_data_7.16b, #4
tbl v_data_0_lo.16b, {v_gft1_lo.16b}, v_data_0_lo.16b
tbl v_data_1_lo.16b, {v_gft1_lo.16b}, v_data_1_lo.16b
tbl v_data_2_lo.16b, {v_gft1_lo.16b}, v_data_2_lo.16b
tbl v_data_3_lo.16b, {v_gft1_lo.16b}, v_data_3_lo.16b
tbl v_data_4_lo.16b, {v_gft1_lo.16b}, v_data_4_lo.16b
tbl v_data_5_lo.16b, {v_gft1_lo.16b}, v_data_5_lo.16b
tbl v_data_6_lo.16b, {v_gft1_lo.16b}, v_data_6_lo.16b
tbl v_data_7_lo.16b, {v_gft1_lo.16b}, v_data_7_lo.16b
tbl v_data_0_hi.16b, {v_gft1_hi.16b}, v_data_0_hi.16b
tbl v_data_1_hi.16b, {v_gft1_hi.16b}, v_data_1_hi.16b
tbl v_data_2_hi.16b, {v_gft1_hi.16b}, v_data_2_hi.16b
tbl v_data_3_hi.16b, {v_gft1_hi.16b}, v_data_3_hi.16b
tbl v_data_4_hi.16b, {v_gft1_hi.16b}, v_data_4_hi.16b
tbl v_data_5_hi.16b, {v_gft1_hi.16b}, v_data_5_hi.16b
tbl v_data_6_hi.16b, {v_gft1_hi.16b}, v_data_6_hi.16b
tbl v_data_7_hi.16b, {v_gft1_hi.16b}, v_data_7_hi.16b
eor v_data_0.16b, v_data_0_hi.16b, v_data_0_lo.16b
eor v_data_1.16b, v_data_1_hi.16b, v_data_1_lo.16b
eor v_data_2.16b, v_data_2_hi.16b, v_data_2_lo.16b
eor v_data_3.16b, v_data_3_hi.16b, v_data_3_lo.16b
eor v_data_4.16b, v_data_4_hi.16b, v_data_4_lo.16b
eor v_data_5.16b, v_data_5_hi.16b, v_data_5_lo.16b
eor v_data_6.16b, v_data_6_hi.16b, v_data_6_lo.16b
eor v_data_7.16b, v_data_7_hi.16b, v_data_7_lo.16b
str q_data_0, [x_dest1, #16*0]
str q_data_1, [x_dest1, #16*1]
str q_data_2, [x_dest1, #16*2]
str q_data_3, [x_dest1, #16*3]
str q_data_4, [x_dest1, #16*4]
str q_data_5, [x_dest1, #16*5]
str q_data_6, [x_dest1, #16*6]
str q_data_7, [x_dest1, #16*7]
add x_src, x_src, #128
add x_dest1, x_dest1, #128
cmp x_src, x_src_end
bls .Lloop128
.Lloop128_end:
/* restore d8 ~ d15 */
ldp d8, d9, [sp]
ldp d10, d11, [sp, #16]
ldp d12, d13, [sp, #32]
ldp d14, d15, [sp, #48]
add sp, sp, #64
add x_src_end, x_src_end, #128
.Lloop32_init:
sub x_src_end, x_src_end, #32
cmp x_src, x_src_end
bhi .return_fail
.Lloop32:
ldr q_data_0, [x_src, #16*0]
ldr q_data_1, [x_src, #16*1]
and v_data_0_lo.16b, v_data_0.16b, v_mask0f.16b
and v_data_1_lo.16b, v_data_1.16b, v_mask0f.16b
ushr v_data_0_hi.16b, v_data_0.16b, #4
ushr v_data_1_hi.16b, v_data_1.16b, #4
tbl v_data_0_lo.16b, {v_gft1_lo.16b}, v_data_0_lo.16b
tbl v_data_1_lo.16b, {v_gft1_lo.16b}, v_data_1_lo.16b
tbl v_data_0_hi.16b, {v_gft1_hi.16b}, v_data_0_hi.16b
tbl v_data_1_hi.16b, {v_gft1_hi.16b}, v_data_1_hi.16b
eor v_data_0.16b, v_data_0_hi.16b, v_data_0_lo.16b
eor v_data_1.16b, v_data_1_hi.16b, v_data_1_lo.16b
str q_data_0, [x_dest1, #16*0]
str q_data_1, [x_dest1, #16*1]
add x_dest1, x_dest1, #32
add x_src, x_src, #32
cmp x_src, x_src_end
bls .Lloop32
.Lloop32_end:
sub x_tmp, x_src, x_src_end
cmp x_tmp, #32
beq .return_pass
b .return_fail
.return_pass:
mov w_ret, #0
ret
.return_fail:
mov w_ret, #1
ret
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