target/arm/sme-fa64.decode

# AArch64 SME allowed instruction decoding
#
#  Copyright (c) 2022 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
#

# These patterns are taken from Appendix E1.1 of DDI0616 A.a,
# Arm Architecture Reference Manual Supplement,
# The Scalable Matrix Extension (SME), for Armv9-A

{
  [
    OK  0-00 1110 0000 0001 0010 11-- ---- ----   # SMOV W|Xd,Vn.B[0]
    OK  0-00 1110 0000 0010 0010 11-- ---- ----   # SMOV W|Xd,Vn.H[0]
    OK  0100 1110 0000 0100 0010 11-- ---- ----   # SMOV Xd,Vn.S[0]
    OK  0000 1110 0000 0001 0011 11-- ---- ----   # UMOV Wd,Vn.B[0]
    OK  0000 1110 0000 0010 0011 11-- ---- ----   # UMOV Wd,Vn.H[0]
    OK  0000 1110 0000 0100 0011 11-- ---- ----   # UMOV Wd,Vn.S[0]
    OK  0100 1110 0000 1000 0011 11-- ---- ----   # UMOV Xd,Vn.D[0]
  ]
  FAIL  0--0 111- ---- ---- ---- ---- ---- ----   # Advanced SIMD vector operations
}

{
  [
    OK  0101 1110 --1- ---- 11-1 11-- ---- ----   # FMULX/FRECPS/FRSQRTS (scalar)
    OK  0101 1110 -10- ---- 00-1 11-- ---- ----   # FMULX/FRECPS/FRSQRTS (scalar, FP16)
    OK  01-1 1110 1-10 0001 11-1 10-- ---- ----   # FRECPE/FRSQRTE/FRECPX (scalar)
    OK  01-1 1110 1111 1001 11-1 10-- ---- ----   # FRECPE/FRSQRTE/FRECPX (scalar, FP16)
  ]
  FAIL  01-1 111- ---- ---- ---- ---- ---- ----   # Advanced SIMD single-element operations
}

FAIL    0-00 110- ---- ---- ---- ---- ---- ----   # Advanced SIMD structure load/store
FAIL    1100 1110 ---- ---- ---- ---- ---- ----   # Advanced SIMD cryptography extensions
FAIL    0001 1110 0111 1110 0000 00-- ---- ----   # FJCVTZS

# These are the "avoidance of doubt" final table of Illegal Advanced SIMD instructions
# We don't actually need to include these, as the default is OK.
#       -001 111- ---- ---- ---- ---- ---- ----   # Scalar floating-point operations
#       --10 110- ---- ---- ---- ---- ---- ----   # Load/store pair of FP registers
#       --01 1100 ---- ---- ---- ---- ---- ----   # Load FP register (PC-relative literal)
#       --11 1100 --0- ---- ---- ---- ---- ----   # Load/store FP register (unscaled imm)
#       --11 1100 --1- ---- ---- ---- ---- --10   # Load/store FP register (register offset)
#       --11 1101 ---- ---- ---- ---- ---- ----   # Load/store FP register (scaled imm)