| # AArch32 VFP instruction descriptions (conditional 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 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 conditional VFP instructions are here: |
| # generally anything matching A32 |
| # cccc 11.. .... .... .... 101. .... .... |
| # and T32 |
| # 1110 110. .... .... .... 101. .... .... |
| # 1110 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 |
| |
| %vmov_idx_b 21:1 5:2 |
| %vmov_idx_h 21:1 6:1 |
| |
| %vmov_imm 16:4 0:4 |
| |
| # VMOV scalar to general-purpose register; note that this does |
| # include some Neon cases. |
| VMOV_to_gp ---- 1110 u:1 1. 1 .... rt:4 1011 ... 1 0000 \ |
| vn=%vn_dp size=0 index=%vmov_idx_b |
| VMOV_to_gp ---- 1110 u:1 0. 1 .... rt:4 1011 ..1 1 0000 \ |
| vn=%vn_dp size=1 index=%vmov_idx_h |
| VMOV_to_gp ---- 1110 0 0 index:1 1 .... rt:4 1011 .00 1 0000 \ |
| vn=%vn_dp size=2 u=0 |
| |
| VMOV_from_gp ---- 1110 0 1. 0 .... rt:4 1011 ... 1 0000 \ |
| vn=%vn_dp size=0 index=%vmov_idx_b |
| VMOV_from_gp ---- 1110 0 0. 0 .... rt:4 1011 ..1 1 0000 \ |
| vn=%vn_dp size=1 index=%vmov_idx_h |
| VMOV_from_gp ---- 1110 0 0 index:1 0 .... rt:4 1011 .00 1 0000 \ |
| vn=%vn_dp size=2 |
| |
| VDUP ---- 1110 1 b:1 q:1 0 .... rt:4 1011 . 0 e:1 1 0000 \ |
| vn=%vn_dp |
| |
| VMSR_VMRS ---- 1110 111 l:1 reg:4 rt:4 1010 0001 0000 |
| VMOV_single ---- 1110 000 l:1 .... rt:4 1010 . 001 0000 \ |
| vn=%vn_sp |
| |
| VMOV_64_sp ---- 1100 010 op:1 rt2:4 rt:4 1010 00.1 .... \ |
| vm=%vm_sp |
| VMOV_64_dp ---- 1100 010 op:1 rt2:4 rt:4 1011 00.1 .... \ |
| vm=%vm_dp |
| |
| # Note that the half-precision variants of VLDR and VSTR are |
| # not part of this decodetree at all because they have bits [9:8] == 0b01 |
| VLDR_VSTR_sp ---- 1101 u:1 .0 l:1 rn:4 .... 1010 imm:8 \ |
| vd=%vd_sp |
| VLDR_VSTR_dp ---- 1101 u:1 .0 l:1 rn:4 .... 1011 imm:8 \ |
| vd=%vd_dp |
| |
| # We split the load/store multiple up into two patterns to avoid |
| # overlap with other insns in the "Advanced SIMD load/store and 64-bit move" |
| # grouping: |
| # P=0 U=0 W=0 is 64-bit VMOV |
| # P=1 W=0 is VLDR/VSTR |
| # P=U W=1 is UNDEF |
| # leaving P=0 U=1 W=x and P=1 U=0 W=1 for load/store multiple. |
| # These include FSTM/FLDM. |
| VLDM_VSTM_sp ---- 1100 1 . w:1 l:1 rn:4 .... 1010 imm:8 \ |
| vd=%vd_sp p=0 u=1 |
| VLDM_VSTM_dp ---- 1100 1 . w:1 l:1 rn:4 .... 1011 imm:8 \ |
| vd=%vd_dp p=0 u=1 |
| |
| VLDM_VSTM_sp ---- 1101 0.1 l:1 rn:4 .... 1010 imm:8 \ |
| vd=%vd_sp p=1 u=0 w=1 |
| VLDM_VSTM_dp ---- 1101 0.1 l:1 rn:4 .... 1011 imm:8 \ |
| vd=%vd_dp p=1 u=0 w=1 |
| |
| # 3-register VFP data-processing; bits [23,21:20,6] identify the operation. |
| VMLA_sp ---- 1110 0.00 .... .... 1010 .0.0 .... \ |
| vm=%vm_sp vn=%vn_sp vd=%vd_sp |
| VMLA_dp ---- 1110 0.00 .... .... 1011 .0.0 .... \ |
| vm=%vm_dp vn=%vn_dp vd=%vd_dp |
| |
| VMLS_sp ---- 1110 0.00 .... .... 1010 .1.0 .... \ |
| vm=%vm_sp vn=%vn_sp vd=%vd_sp |
| VMLS_dp ---- 1110 0.00 .... .... 1011 .1.0 .... \ |
| vm=%vm_dp vn=%vn_dp vd=%vd_dp |
| |
| VNMLS_sp ---- 1110 0.01 .... .... 1010 .0.0 .... \ |
| vm=%vm_sp vn=%vn_sp vd=%vd_sp |
| VNMLS_dp ---- 1110 0.01 .... .... 1011 .0.0 .... \ |
| vm=%vm_dp vn=%vn_dp vd=%vd_dp |
| |
| VNMLA_sp ---- 1110 0.01 .... .... 1010 .1.0 .... \ |
| vm=%vm_sp vn=%vn_sp vd=%vd_sp |
| VNMLA_dp ---- 1110 0.01 .... .... 1011 .1.0 .... \ |
| vm=%vm_dp vn=%vn_dp vd=%vd_dp |
| |
| VMUL_sp ---- 1110 0.10 .... .... 1010 .0.0 .... \ |
| vm=%vm_sp vn=%vn_sp vd=%vd_sp |
| VMUL_dp ---- 1110 0.10 .... .... 1011 .0.0 .... \ |
| vm=%vm_dp vn=%vn_dp vd=%vd_dp |
| |
| VNMUL_sp ---- 1110 0.10 .... .... 1010 .1.0 .... \ |
| vm=%vm_sp vn=%vn_sp vd=%vd_sp |
| VNMUL_dp ---- 1110 0.10 .... .... 1011 .1.0 .... \ |
| vm=%vm_dp vn=%vn_dp vd=%vd_dp |
| |
| VADD_sp ---- 1110 0.11 .... .... 1010 .0.0 .... \ |
| vm=%vm_sp vn=%vn_sp vd=%vd_sp |
| VADD_dp ---- 1110 0.11 .... .... 1011 .0.0 .... \ |
| vm=%vm_dp vn=%vn_dp vd=%vd_dp |
| |
| VSUB_sp ---- 1110 0.11 .... .... 1010 .1.0 .... \ |
| vm=%vm_sp vn=%vn_sp vd=%vd_sp |
| VSUB_dp ---- 1110 0.11 .... .... 1011 .1.0 .... \ |
| vm=%vm_dp vn=%vn_dp vd=%vd_dp |
| |
| VDIV_sp ---- 1110 1.00 .... .... 1010 .0.0 .... \ |
| vm=%vm_sp vn=%vn_sp vd=%vd_sp |
| VDIV_dp ---- 1110 1.00 .... .... 1011 .0.0 .... \ |
| vm=%vm_dp vn=%vn_dp vd=%vd_dp |
| |
| VFM_sp ---- 1110 1.01 .... .... 1010 . o2:1 . 0 .... \ |
| vm=%vm_sp vn=%vn_sp vd=%vd_sp o1=1 |
| VFM_dp ---- 1110 1.01 .... .... 1011 . o2:1 . 0 .... \ |
| vm=%vm_dp vn=%vn_dp vd=%vd_dp o1=1 |
| VFM_sp ---- 1110 1.10 .... .... 1010 . o2:1 . 0 .... \ |
| vm=%vm_sp vn=%vn_sp vd=%vd_sp o1=2 |
| VFM_dp ---- 1110 1.10 .... .... 1011 . o2:1 . 0 .... \ |
| vm=%vm_dp vn=%vn_dp vd=%vd_dp o1=2 |
| |
| VMOV_imm_sp ---- 1110 1.11 .... .... 1010 0000 .... \ |
| vd=%vd_sp imm=%vmov_imm |
| VMOV_imm_dp ---- 1110 1.11 .... .... 1011 0000 .... \ |
| vd=%vd_dp imm=%vmov_imm |
| |
| VMOV_reg_sp ---- 1110 1.11 0000 .... 1010 01.0 .... \ |
| vd=%vd_sp vm=%vm_sp |
| VMOV_reg_dp ---- 1110 1.11 0000 .... 1011 01.0 .... \ |
| vd=%vd_dp vm=%vm_dp |
| |
| VABS_sp ---- 1110 1.11 0000 .... 1010 11.0 .... \ |
| vd=%vd_sp vm=%vm_sp |
| VABS_dp ---- 1110 1.11 0000 .... 1011 11.0 .... \ |
| vd=%vd_dp vm=%vm_dp |
| |
| VNEG_sp ---- 1110 1.11 0001 .... 1010 01.0 .... \ |
| vd=%vd_sp vm=%vm_sp |
| VNEG_dp ---- 1110 1.11 0001 .... 1011 01.0 .... \ |
| vd=%vd_dp vm=%vm_dp |
| |
| VSQRT_sp ---- 1110 1.11 0001 .... 1010 11.0 .... \ |
| vd=%vd_sp vm=%vm_sp |
| VSQRT_dp ---- 1110 1.11 0001 .... 1011 11.0 .... \ |
| vd=%vd_dp vm=%vm_dp |
| |
| VCMP_sp ---- 1110 1.11 010 z:1 .... 1010 e:1 1.0 .... \ |
| vd=%vd_sp vm=%vm_sp |
| VCMP_dp ---- 1110 1.11 010 z:1 .... 1011 e:1 1.0 .... \ |
| vd=%vd_dp vm=%vm_dp |
| |
| # VCVTT and VCVTB from f16: Vd format depends on size bit; Vm is always vm_sp |
| VCVT_f32_f16 ---- 1110 1.11 0010 .... 1010 t:1 1.0 .... \ |
| vd=%vd_sp vm=%vm_sp |
| VCVT_f64_f16 ---- 1110 1.11 0010 .... 1011 t:1 1.0 .... \ |
| vd=%vd_dp vm=%vm_sp |
| |
| # VCVTB and VCVTT to f16: Vd format is always vd_sp; Vm format depends on size bit |
| VCVT_f16_f32 ---- 1110 1.11 0011 .... 1010 t:1 1.0 .... \ |
| vd=%vd_sp vm=%vm_sp |
| VCVT_f16_f64 ---- 1110 1.11 0011 .... 1011 t:1 1.0 .... \ |
| vd=%vd_sp vm=%vm_dp |
| |
| VRINTR_sp ---- 1110 1.11 0110 .... 1010 01.0 .... \ |
| vd=%vd_sp vm=%vm_sp |
| VRINTR_dp ---- 1110 1.11 0110 .... 1011 01.0 .... \ |
| vd=%vd_dp vm=%vm_dp |
| |
| VRINTZ_sp ---- 1110 1.11 0110 .... 1010 11.0 .... \ |
| vd=%vd_sp vm=%vm_sp |
| VRINTZ_dp ---- 1110 1.11 0110 .... 1011 11.0 .... \ |
| vd=%vd_dp vm=%vm_dp |
| |
| VRINTX_sp ---- 1110 1.11 0111 .... 1010 01.0 .... \ |
| vd=%vd_sp vm=%vm_sp |
| VRINTX_dp ---- 1110 1.11 0111 .... 1011 01.0 .... \ |
| vd=%vd_dp vm=%vm_dp |
| |
| # VCVT between single and double: Vm precision depends on size; Vd is its reverse |
| VCVT_sp ---- 1110 1.11 0111 .... 1010 11.0 .... \ |
| vd=%vd_dp vm=%vm_sp |
| VCVT_dp ---- 1110 1.11 0111 .... 1011 11.0 .... \ |
| vd=%vd_sp vm=%vm_dp |
| |
| # VCVT from integer to floating point: Vm always single; Vd depends on size |
| VCVT_int_sp ---- 1110 1.11 1000 .... 1010 s:1 1.0 .... \ |
| vd=%vd_sp vm=%vm_sp |
| VCVT_int_dp ---- 1110 1.11 1000 .... 1011 s:1 1.0 .... \ |
| vd=%vd_dp vm=%vm_sp |
| |
| # VJCVT is always dp to sp |
| VJCVT ---- 1110 1.11 1001 .... 1011 11.0 .... \ |
| vd=%vd_sp vm=%vm_dp |
| |
| # VCVT between floating-point and fixed-point. The immediate value |
| # is in the same format as a Vm single-precision register number. |
| # We assemble bits 18 (op), 16 (u) and 7 (sx) into a single opc field |
| # for the convenience of the trans_VCVT_fix functions. |
| %vcvt_fix_op 18:1 16:1 7:1 |
| VCVT_fix_sp ---- 1110 1.11 1.1. .... 1010 .1.0 .... \ |
| vd=%vd_sp imm=%vm_sp opc=%vcvt_fix_op |
| VCVT_fix_dp ---- 1110 1.11 1.1. .... 1011 .1.0 .... \ |
| vd=%vd_dp imm=%vm_sp opc=%vcvt_fix_op |
| |
| # VCVT float to integer (VCVT and VCVTR): Vd always single; Vd depends on size |
| VCVT_sp_int ---- 1110 1.11 110 s:1 .... 1010 rz:1 1.0 .... \ |
| vd=%vd_sp vm=%vm_sp |
| VCVT_dp_int ---- 1110 1.11 110 s:1 .... 1011 rz:1 1.0 .... \ |
| vd=%vd_sp vm=%vm_dp |
