133 lines
5.4 KiB
Text
133 lines
5.4 KiB
Text
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#
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# RISC-V translation routines for the RVXI Base Integer Instruction Set.
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#
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# Copyright (c) 2018 Peer Adelt, peer.adelt@hni.uni-paderborn.de
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# Bastian Koppelmann, kbastian@mail.uni-paderborn.de
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms and conditions of the GNU General Public License,
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# version 2 or later, as published by the Free Software Foundation.
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#
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# This program is distributed in the hope it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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# more details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program. If not, see <http://www.gnu.org/licenses/>.
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# Fields:
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%rd 7:5
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%rs1_3 7:3 !function=ex_rvc_register
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%rs2_3 2:3 !function=ex_rvc_register
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%rs2_5 2:5
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# Immediates:
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%imm_ci 12:s1 2:5
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%nzuimm_ciw 7:4 11:2 5:1 6:1 !function=ex_shift_2
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%uimm_cl_d 5:2 10:3 !function=ex_shift_3
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%uimm_cl_w 5:1 10:3 6:1 !function=ex_shift_2
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%imm_cb 12:s1 5:2 2:1 10:2 3:2 !function=ex_shift_1
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%imm_cj 12:s1 8:1 9:2 6:1 7:1 2:1 11:1 3:3 !function=ex_shift_1
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%shimm_6bit 12:1 2:5 !function=ex_rvc_shifti
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%uimm_6bit_ld 2:3 12:1 5:2 !function=ex_shift_3
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%uimm_6bit_lw 2:2 12:1 4:3 !function=ex_shift_2
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%uimm_6bit_sd 7:3 10:3 !function=ex_shift_3
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%uimm_6bit_sw 7:2 9:4 !function=ex_shift_2
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%imm_addi16sp 12:s1 3:2 5:1 2:1 6:1 !function=ex_shift_4
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%imm_lui 12:s1 2:5 !function=ex_shift_12
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# Argument sets imported from insn32.decode:
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&empty !extern
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&r rd rs1 rs2 !extern
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&i imm rs1 rd !extern
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&s imm rs1 rs2 !extern
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&j imm rd !extern
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&b imm rs2 rs1 !extern
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&u imm rd !extern
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&shift shamt rs1 rd !extern
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# Formats 16:
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@cr .... ..... ..... .. &r rs2=%rs2_5 rs1=%rd %rd
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@ci ... . ..... ..... .. &i imm=%imm_ci rs1=%rd %rd
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@cl_d ... ... ... .. ... .. &i imm=%uimm_cl_d rs1=%rs1_3 rd=%rs2_3
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@cl_w ... ... ... .. ... .. &i imm=%uimm_cl_w rs1=%rs1_3 rd=%rs2_3
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@cs_2 ... ... ... .. ... .. &r rs2=%rs2_3 rs1=%rs1_3 rd=%rs1_3
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@cs_d ... ... ... .. ... .. &s imm=%uimm_cl_d rs1=%rs1_3 rs2=%rs2_3
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@cs_w ... ... ... .. ... .. &s imm=%uimm_cl_w rs1=%rs1_3 rs2=%rs2_3
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@cj ... ........... .. &j imm=%imm_cj
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@cb_z ... ... ... .. ... .. &b imm=%imm_cb rs1=%rs1_3 rs2=0
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@c_ldsp ... . ..... ..... .. &i imm=%uimm_6bit_ld rs1=2 %rd
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@c_lwsp ... . ..... ..... .. &i imm=%uimm_6bit_lw rs1=2 %rd
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@c_sdsp ... . ..... ..... .. &s imm=%uimm_6bit_sd rs1=2 rs2=%rs2_5
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@c_swsp ... . ..... ..... .. &s imm=%uimm_6bit_sw rs1=2 rs2=%rs2_5
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@c_li ... . ..... ..... .. &i imm=%imm_ci rs1=0 %rd
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@c_lui ... . ..... ..... .. &u imm=%imm_lui %rd
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@c_jalr ... . ..... ..... .. &i imm=0 rs1=%rd
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@c_mv ... . ..... ..... .. &i imm=0 rs1=%rs2_5 %rd
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@c_addi4spn ... . ..... ..... .. &i imm=%nzuimm_ciw rs1=2 rd=%rs2_3
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@c_addi16sp ... . ..... ..... .. &i imm=%imm_addi16sp rs1=2 rd=2
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@c_shift ... . .. ... ..... .. \
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&shift rd=%rs1_3 rs1=%rs1_3 shamt=%shimm_6bit
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@c_shift2 ... . .. ... ..... .. \
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&shift rd=%rd rs1=%rd shamt=%shimm_6bit
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@c_andi ... . .. ... ..... .. &i imm=%imm_ci rs1=%rs1_3 rd=%rs1_3
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# *** RV32/64C Standard Extension (Quadrant 0) ***
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{
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# Opcode of all zeros is illegal; rd != 0, nzuimm == 0 is reserved.
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illegal 000 000 000 00 --- 00
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addi 000 ... ... .. ... 00 @c_addi4spn
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}
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fld 001 ... ... .. ... 00 @cl_d
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lw 010 ... ... .. ... 00 @cl_w
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fsd 101 ... ... .. ... 00 @cs_d
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sw 110 ... ... .. ... 00 @cs_w
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# *** RV32/64C Standard Extension (Quadrant 1) ***
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addi 000 . ..... ..... 01 @ci
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addi 010 . ..... ..... 01 @c_li
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{
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illegal 011 0 ----- 00000 01 # c.addi16sp and c.lui, RES nzimm=0
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addi 011 . 00010 ..... 01 @c_addi16sp
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lui 011 . ..... ..... 01 @c_lui
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}
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srli 100 . 00 ... ..... 01 @c_shift
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srai 100 . 01 ... ..... 01 @c_shift
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andi 100 . 10 ... ..... 01 @c_andi
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sub 100 0 11 ... 00 ... 01 @cs_2
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xor 100 0 11 ... 01 ... 01 @cs_2
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or 100 0 11 ... 10 ... 01 @cs_2
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and 100 0 11 ... 11 ... 01 @cs_2
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jal 101 ........... 01 @cj rd=0 # C.J
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beq 110 ... ... ..... 01 @cb_z
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bne 111 ... ... ..... 01 @cb_z
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# *** RV32/64C Standard Extension (Quadrant 2) ***
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slli 000 . ..... ..... 10 @c_shift2
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fld 001 . ..... ..... 10 @c_ldsp
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{
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illegal 010 - 00000 ----- 10 # c.lwsp, RES rd=0
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lw 010 . ..... ..... 10 @c_lwsp
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}
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{
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illegal 100 0 00000 00000 10 # c.jr, RES rs1=0
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jalr 100 0 ..... 00000 10 @c_jalr rd=0 # C.JR
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addi 100 0 ..... ..... 10 @c_mv
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}
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{
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ebreak 100 1 00000 00000 10
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jalr 100 1 ..... 00000 10 @c_jalr rd=1 # C.JALR
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add 100 1 ..... ..... 10 @cr
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}
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fsd 101 ...... ..... 10 @c_sdsp
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sw 110 . ..... ..... 10 @c_swsp
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