target/arm/neon-shared.decode

   1 # AArch32 Neon instruction descriptions
   2 #
   3 #  Copyright (c) 2020 Linaro, Ltd
   4 #
   5 # This library is free software; you can redistribute it and/or
   6 # modify it under the terms of the GNU Lesser General Public
   7 # License as published by the Free Software Foundation; either
   8 # version 2.1 of the License, or (at your option) any later version.
   9 #
  10 # This library is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # Lesser General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU Lesser General Public
  16 # License along with this library; if not, see <http://www.gnu.org/licenses/>.
  17
  18 #
  19 # This file is processed by scripts/decodetree.py
  20 #
  21
  22 # Encodings for Neon instructions whose encoding is the same for
  23 # both A32 and T32.
  24
  25 # More specifically, this covers:
  26 # 2reg scalar ext: 0b1111_1110_xxxx_xxxx_xxxx_1x0x_xxxx_xxxx
  27 # 3same ext:       0b1111_110x_xxxx_xxxx_xxxx_1x0x_xxxx_xxxx
  28
  29 # VFP/Neon register fields; same as vfp.decode
  30 %vm_dp  5:1 0:4
  31 %vm_sp  0:4 5:1
  32 %vn_dp  7:1 16:4
  33 %vn_sp  16:4 7:1
  34 %vd_dp  22:1 12:4
  35 %vd_sp  12:4 22:1
  36
  37 # For VCMLA/VCADD insns, convert the single-bit size field
  38 # which is 0 for fp16 and 1 for fp32 into a MO_* constant.
  39 # (Note that this is the reverse of the sense of the 1-bit size
  40 # field in the 3same_fp Neon insns.)
  41 %vcadd_size    20:1 !function=plus_1
  42
  43 VCMLA          1111 110 rot:2 . 1 . .... .... 1000 . q:1 . 0 .... \
  44                vm=%vm_dp vn=%vn_dp vd=%vd_dp size=%vcadd_size
  45
  46 VCADD          1111 110 rot:1 1 . 0 . .... .... 1000 . q:1 . 0 .... \
  47                vm=%vm_dp vn=%vn_dp vd=%vd_dp size=%vcadd_size
  48
  49 VSDOT          1111 110 00 . 10 .... .... 1101 . q:1 . 0 .... \
  50                vm=%vm_dp vn=%vn_dp vd=%vd_dp
  51 VUDOT          1111 110 00 . 10 .... .... 1101 . q:1 . 1 .... \
  52                vm=%vm_dp vn=%vn_dp vd=%vd_dp
  53 VUSDOT         1111 110 01 . 10 .... .... 1101 . q:1 . 0 .... \
  54                vm=%vm_dp vn=%vn_dp vd=%vd_dp
  55 VDOT_b16       1111 110 00 . 00 .... .... 1101 . q:1 . 0 .... \
  56                vm=%vm_dp vn=%vn_dp vd=%vd_dp
  57
  58 # VFM[AS]L
  59 VFML           1111 110 0 s:1 . 10 .... .... 1000 . 0 . 1 .... \
  60                vm=%vm_sp vn=%vn_sp vd=%vd_dp q=0
  61 VFML           1111 110 0 s:1 . 10 .... .... 1000 . 1 . 1 .... \
  62                vm=%vm_dp vn=%vn_dp vd=%vd_dp q=1
  63
  64 VSMMLA         1111 1100 0.10 .... .... 1100 .1.0 .... \
  65                vm=%vm_dp vn=%vn_dp vd=%vd_dp
  66 VUMMLA         1111 1100 0.10 .... .... 1100 .1.1 .... \
  67                vm=%vm_dp vn=%vn_dp vd=%vd_dp
  68 VUSMMLA        1111 1100 1.10 .... .... 1100 .1.0 .... \
  69                vm=%vm_dp vn=%vn_dp vd=%vd_dp
  70 VMMLA_b16      1111 1100 0.00 .... .... 1100 .1.0 .... \
  71                vm=%vm_dp vn=%vn_dp vd=%vd_dp
  72
  73 VFMA_b16       1111 110 0 0.11 .... .... 1000 . q:1 . 1 .... \
  74                vm=%vm_dp vn=%vn_dp vd=%vd_dp
  75
  76 VCMLA_scalar   1111 1110 0 . rot:2 .... .... 1000 . q:1 index:1 0 vm:4 \
  77                vn=%vn_dp vd=%vd_dp size=1
  78 VCMLA_scalar   1111 1110 1 . rot:2 .... .... 1000 . q:1 . 0 .... \
  79                vm=%vm_dp vn=%vn_dp vd=%vd_dp size=2 index=0
  80
  81 VSDOT_scalar   1111 1110 0 . 10 .... .... 1101 . q:1 index:1 0 vm:4 \
  82                vn=%vn_dp vd=%vd_dp
  83 VUDOT_scalar   1111 1110 0 . 10 .... .... 1101 . q:1 index:1 1 vm:4 \
  84                vn=%vn_dp vd=%vd_dp
  85 VUSDOT_scalar  1111 1110 1 . 00 .... .... 1101 . q:1 index:1 0 vm:4 \
  86                vn=%vn_dp vd=%vd_dp
  87 VSUDOT_scalar  1111 1110 1 . 00 .... .... 1101 . q:1 index:1 1 vm:4 \
  88                vn=%vn_dp vd=%vd_dp
  89 VDOT_b16_scal  1111 1110 0 . 00 .... .... 1101 . q:1 index:1 0 vm:4 \
  90                vn=%vn_dp vd=%vd_dp
  91
  92 %vfml_scalar_q0_rm 0:3 5:1
  93 %vfml_scalar_q1_index 5:1 3:1
  94 VFML_scalar    1111 1110 0 . 0 s:1 .... .... 1000 . 0 . 1 index:1 ... \
  95                rm=%vfml_scalar_q0_rm vn=%vn_sp vd=%vd_dp q=0
  96 VFML_scalar    1111 1110 0 . 0 s:1 .... .... 1000 . 1 . 1 . rm:3 \
  97                index=%vfml_scalar_q1_index vn=%vn_dp vd=%vd_dp q=1
  98 VFMA_b16_scal  1111 1110 0.11 .... .... 1000 . q:1 . 1 . vm:3 \
  99                index=%vfml_scalar_q1_index vn=%vn_dp vd=%vd_dp