# # OpenRISC instruction decode definitions. # # Copyright (c) 2018 Richard Henderson # # 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 . # #### # System Instructions #### l_sys 001000 0000000000 k:16 l_trap 001000 0100000000 k:16 l_msync 001000 1000000000 00000000 00000000 l_psync 001000 1010000000 00000000 00000000 l_csync 001000 1100000000 00000000 00000000 l_rfe 001001 ----- ----- -------- -------- #### # Branch Instructions #### l_j 000000 n:s26 l_jal 000001 n:s26 l_bnf 000011 n:s26 l_bf 000100 n:s26 l_jr 010001 ---------- b:5 ----------- l_jalr 010010 ---------- b:5 ----------- #### # Memory Instructions #### &load d a i @load ...... d:5 a:5 i:s16 &load %store_i 21:s5 0:11 &store a b i @store ...... ..... a:5 b:5 ........... &store i=%store_i l_lwa 011011 ..... ..... ........ ........ @load l_lwz 100001 ..... ..... ........ ........ @load l_lws 100010 ..... ..... ........ ........ @load l_lbz 100011 ..... ..... ........ ........ @load l_lbs 100100 ..... ..... ........ ........ @load l_lhz 100101 ..... ..... ........ ........ @load l_lhs 100110 ..... ..... ........ ........ @load l_swa 110011 ..... ..... ..... ........... @store l_sw 110101 ..... ..... ..... ........... @store l_sb 110110 ..... ..... ..... ........... @store l_sh 110111 ..... ..... ..... ........... @store #### # Immediate Operand Instructions #### %mtspr_k 21:5 0:11 &rri d a i &rrk d a k @rri ...... d:5 a:5 i:s16 &rri @rrk ...... d:5 a:5 k:16 &rrk l_nop 000101 01--- ----- k:16 l_addi 100111 ..... ..... ........ ........ @rri l_addic 101000 ..... ..... ........ ........ @rri l_andi 101001 ..... ..... ........ ........ @rrk l_ori 101010 ..... ..... ........ ........ @rrk l_xori 101011 ..... ..... ........ ........ @rri l_muli 101100 ..... ..... ........ ........ @rri l_mfspr 101101 ..... ..... ........ ........ @rrk l_mtspr 110000 ..... a:5 b:5 ........... k=%mtspr_k l_maci 010011 ----- a:5 i:s16