diff options
Diffstat (limited to 'target/arm/tcg/vfp-uncond.decode')
| -rw-r--r-- | target/arm/tcg/vfp-uncond.decode | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/target/arm/tcg/vfp-uncond.decode b/target/arm/tcg/vfp-uncond.decode new file mode 100644 index 0000000000..5c50447a66 --- /dev/null +++ b/target/arm/tcg/vfp-uncond.decode @@ -0,0 +1,82 @@ +# AArch32 VFP instruction descriptions (unconditional insns) +# +# Copyright (c) 2019 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 the unconditional VFP instructions are here: +# generally anything matching A32 +# 1111 1110 .... .... .... 101. ...0 .... +# and T32 +# 1111 110. .... .... .... 101. .... .... +# 1111 1110 .... .... .... 101. .... .... +# (but those patterns might also cover some Neon instructions, +# which do not live in this file.) + +# VFP registers have an odd encoding with a four-bit field +# and a one-bit field which are assembled in different orders +# depending on whether the register is double or single precision. +# Each individual instruction function must do the checks for +# "double register selected but CPU does not have double support" +# and "double register number has bit 4 set but CPU does not +# support D16-D31" (which should UNDEF). +%vm_dp 5:1 0:4 +%vm_sp 0:4 5:1 +%vn_dp 7:1 16:4 +%vn_sp 16:4 7:1 +%vd_dp 22:1 12:4 +%vd_sp 12:4 22:1 + +@vfp_dnm_s ................................ vm=%vm_sp vn=%vn_sp vd=%vd_sp +@vfp_dnm_d ................................ vm=%vm_dp vn=%vn_dp vd=%vd_dp + +VSEL 1111 1110 0. cc:2 .... .... 1001 .0.0 .... \ + vm=%vm_sp vn=%vn_sp vd=%vd_sp sz=1 +VSEL 1111 1110 0. cc:2 .... .... 1010 .0.0 .... \ + vm=%vm_sp vn=%vn_sp vd=%vd_sp sz=2 +VSEL 1111 1110 0. cc:2 .... .... 1011 .0.0 .... \ + vm=%vm_dp vn=%vn_dp vd=%vd_dp sz=3 + +VMAXNM_hp 1111 1110 1.00 .... .... 1001 .0.0 .... @vfp_dnm_s +VMINNM_hp 1111 1110 1.00 .... .... 1001 .1.0 .... @vfp_dnm_s + +VMAXNM_sp 1111 1110 1.00 .... .... 1010 .0.0 .... @vfp_dnm_s +VMINNM_sp 1111 1110 1.00 .... .... 1010 .1.0 .... @vfp_dnm_s + +VMAXNM_dp 1111 1110 1.00 .... .... 1011 .0.0 .... @vfp_dnm_d +VMINNM_dp 1111 1110 1.00 .... .... 1011 .1.0 .... @vfp_dnm_d + +VRINT 1111 1110 1.11 10 rm:2 .... 1001 01.0 .... \ + vm=%vm_sp vd=%vd_sp sz=1 +VRINT 1111 1110 1.11 10 rm:2 .... 1010 01.0 .... \ + vm=%vm_sp vd=%vd_sp sz=2 +VRINT 1111 1110 1.11 10 rm:2 .... 1011 01.0 .... \ + vm=%vm_dp vd=%vd_dp sz=3 + +# VCVT float to int with specified rounding mode; Vd is always single-precision +VCVT 1111 1110 1.11 11 rm:2 .... 1001 op:1 1.0 .... \ + vm=%vm_sp vd=%vd_sp sz=1 +VCVT 1111 1110 1.11 11 rm:2 .... 1010 op:1 1.0 .... \ + vm=%vm_sp vd=%vd_sp sz=2 +VCVT 1111 1110 1.11 11 rm:2 .... 1011 op:1 1.0 .... \ + vm=%vm_dp vd=%vd_sp sz=3 + +VMOVX 1111 1110 1.11 0000 .... 1010 01 . 0 .... \ + vd=%vd_sp vm=%vm_sp + +VINS 1111 1110 1.11 0000 .... 1010 11 . 0 .... \ + vd=%vd_sp vm=%vm_sp |