2018-02-19 21:28:12 +01:00
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#
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# OpenRISC instruction decode definitions.
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#
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# Copyright (c) 2018 Richard Henderson <rth@twiddle.net>
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, see <http://www.gnu.org/licenses/>.
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#
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####
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# System Instructions
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####
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l_sys 001000 0000000000 k:16
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l_trap 001000 0100000000 k:16
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l_msync 001000 1000000000 00000000 00000000
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l_psync 001000 1010000000 00000000 00000000
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l_csync 001000 1100000000 00000000 00000000
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2018-02-19 21:52:43 +01:00
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####
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# Branch Instructions
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####
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l_j 000000 n:s26
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l_jal 000001 n:s26
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l_bnf 000011 n:s26
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l_bf 000100 n:s26
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l_jr 010001 ---------- b:5 -----------
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l_jalr 010010 ---------- b:5 -----------
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2018-02-20 17:21:12 +01:00
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####
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# Memory Instructions
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####
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&load d a i
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@load ...... d:5 a:5 i:s16 &load
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%store_i 21:s5 0:11
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&store a b i
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@store ...... ..... a:5 b:5 ........... &store i=%store_i
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l_lwa 011011 ..... ..... ........ ........ @load
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l_lwz 100001 ..... ..... ........ ........ @load
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l_lws 100010 ..... ..... ........ ........ @load
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l_lbz 100011 ..... ..... ........ ........ @load
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l_lbs 100100 ..... ..... ........ ........ @load
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l_lhz 100101 ..... ..... ........ ........ @load
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l_lhs 100110 ..... ..... ........ ........ @load
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l_swa 110011 ..... ..... ........ ........ @store
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l_sw 110101 ..... ..... ........ ........ @store
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l_sb 110110 ..... ..... ........ ........ @store
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l_sh 110111 ..... ..... ........ ........ @store
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