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Diffstat (limited to 'target/openrisc/insns.decode')
| -rw-r--r-- | target/openrisc/insns.decode | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/target/openrisc/insns.decode b/target/openrisc/insns.decode new file mode 100644 index 0000000..dad68c8 --- /dev/null +++ b/target/openrisc/insns.decode @@ -0,0 +1,189 @@ +# +# OpenRISC instruction decode definitions. +# +# Copyright (c) 2018 Richard Henderson <rth@twiddle.net> +# +# 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/>. +# + +&dab d a b +&da d a +&ab a b +&dal d a l +&ai a i + +#### +# 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 + +l_movhi 000110 d:5 ----0 k:16 +l_macrc 000110 d:5 ----1 00000000 00000000 + +#### +# Arithmetic Instructions +#### + +l_exths 111000 d:5 a:5 ----- - 0000 -- 1100 +l_extbs 111000 d:5 a:5 ----- - 0001 -- 1100 +l_exthz 111000 d:5 a:5 ----- - 0010 -- 1100 +l_extbz 111000 d:5 a:5 ----- - 0011 -- 1100 + +l_add 111000 d:5 a:5 b:5 - 00 ---- 0000 +l_addc 111000 d:5 a:5 b:5 - 00 ---- 0001 +l_sub 111000 d:5 a:5 b:5 - 00 ---- 0010 +l_and 111000 d:5 a:5 b:5 - 00 ---- 0011 +l_or 111000 d:5 a:5 b:5 - 00 ---- 0100 +l_xor 111000 d:5 a:5 b:5 - 00 ---- 0101 +l_cmov 111000 d:5 a:5 b:5 - 00 ---- 1110 +l_ff1 111000 d:5 a:5 ----- - 00 ---- 1111 +l_fl1 111000 d:5 a:5 ----- - 01 ---- 1111 + +l_sll 111000 d:5 a:5 b:5 - 0000 -- 1000 +l_srl 111000 d:5 a:5 b:5 - 0001 -- 1000 +l_sra 111000 d:5 a:5 b:5 - 0010 -- 1000 +l_ror 111000 d:5 a:5 b:5 - 0011 -- 1000 + +l_mul 111000 d:5 a:5 b:5 - 11 ---- 0110 +l_mulu 111000 d:5 a:5 b:5 - 11 ---- 1011 +l_div 111000 d:5 a:5 b:5 - 11 ---- 1001 +l_divu 111000 d:5 a:5 b:5 - 11 ---- 1010 + +l_muld 111000 ----- a:5 b:5 - 11 ---- 0111 +l_muldu 111000 ----- a:5 b:5 - 11 ---- 1100 + +l_mac 110001 ----- a:5 b:5 ------- 0001 +l_macu 110001 ----- a:5 b:5 ------- 0011 +l_msb 110001 ----- a:5 b:5 ------- 0010 +l_msbu 110001 ----- a:5 b:5 ------- 0100 + +l_slli 101110 d:5 a:5 -------- 00 l:6 +l_srli 101110 d:5 a:5 -------- 01 l:6 +l_srai 101110 d:5 a:5 -------- 10 l:6 +l_rori 101110 d:5 a:5 -------- 11 l:6 + +#### +# Compare Instructions +#### + +l_sfeq 111001 00000 a:5 b:5 ----------- +l_sfne 111001 00001 a:5 b:5 ----------- +l_sfgtu 111001 00010 a:5 b:5 ----------- +l_sfgeu 111001 00011 a:5 b:5 ----------- +l_sfltu 111001 00100 a:5 b:5 ----------- +l_sfleu 111001 00101 a:5 b:5 ----------- +l_sfgts 111001 01010 a:5 b:5 ----------- +l_sfges 111001 01011 a:5 b:5 ----------- +l_sflts 111001 01100 a:5 b:5 ----------- +l_sfles 111001 01101 a:5 b:5 ----------- + +l_sfeqi 101111 00000 a:5 i:s16 +l_sfnei 101111 00001 a:5 i:s16 +l_sfgtui 101111 00010 a:5 i:s16 +l_sfgeui 101111 00011 a:5 i:s16 +l_sfltui 101111 00100 a:5 i:s16 +l_sfleui 101111 00101 a:5 i:s16 +l_sfgtsi 101111 01010 a:5 i:s16 +l_sfgesi 101111 01011 a:5 i:s16 +l_sfltsi 101111 01100 a:5 i:s16 +l_sflesi 101111 01101 a:5 i:s16 + +#### +# FP Instructions +#### + +lf_add_s 110010 d:5 a:5 b:5 --- 00000000 +lf_sub_s 110010 d:5 a:5 b:5 --- 00000001 +lf_mul_s 110010 d:5 a:5 b:5 --- 00000010 +lf_div_s 110010 d:5 a:5 b:5 --- 00000011 +lf_rem_s 110010 d:5 a:5 b:5 --- 00000110 +lf_madd_s 110010 d:5 a:5 b:5 --- 00000111 + +lf_itof_s 110010 d:5 a:5 00000 --- 00000100 +lf_ftoi_s 110010 d:5 a:5 00000 --- 00000101 + +lf_sfeq_s 110010 ----- a:5 b:5 --- 00001000 +lf_sfne_s 110010 ----- a:5 b:5 --- 00001001 +lf_sfgt_s 110010 ----- a:5 b:5 --- 00001010 +lf_sfge_s 110010 ----- a:5 b:5 --- 00001011 +lf_sflt_s 110010 ----- a:5 b:5 --- 00001100 +lf_sfle_s 110010 ----- a:5 b:5 --- 00001101 |