target/arm/neon-ls.decode

# AArch32 Neon load/store instruction descriptions
#
#  Copyright (c) 2020 Linaro, Ltd
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, see <http://www.gnu.org/licenses/>.

#
# This file is processed by scripts/decodetree.py
#

# Encodings for Neon load/store instructions where the T32 encoding
# is a simple transformation of the A32 encoding.
# More specifically, this file covers instructions where the A32 encoding is
#   0b1111_0100_xxx0_xxxx_xxxx_xxxx_xxxx_xxxx
# and the T32 encoding is
#   0b1111_1001_xxx0_xxxx_xxxx_xxxx_xxxx_xxxx
# This file works on the A32 encoding only; calling code for T32 has to
# transform the insn into the A32 version first.

%vd_dp  22:1 12:4

# Neon load/store multiple structures

VLDST_multiple 1111 0100 0 . l:1 0 rn:4 .... itype:4 size:2 align:2 rm:4 \
               vd=%vd_dp

# Neon load single element to all lanes

VLD_all_lanes  1111 0100 1 . 1 0 rn:4 .... 11 n:2 size:2 t:1 a:1 rm:4 \
               vd=%vd_dp

# Neon load/store single structure to one lane
%imm1_5_p1 5:1 !function=plus1
%imm1_6_p1 6:1 !function=plus1

VLDST_single   1111 0100 1 . l:1 0 rn:4 .... 00 n:2 reg_idx:3 align:1 rm:4 \
               vd=%vd_dp size=0 stride=1
VLDST_single   1111 0100 1 . l:1 0 rn:4 .... 01 n:2 reg_idx:2 align:2 rm:4 \
               vd=%vd_dp size=1 stride=%imm1_5_p1
VLDST_single   1111 0100 1 . l:1 0 rn:4 .... 10 n:2 reg_idx:1 align:3 rm:4 \
               vd=%vd_dp size=2 stride=%imm1_6_p1