2 # RISC-V translation routines for the RVXI Base Integer Instruction Set.
4 # Copyright (c) 2018 Peer Adelt, peer.adelt@hni.uni-paderborn.de
5 # Bastian Koppelmann, kbastian@mail.uni-paderborn.de
7 # This program is free software; you can redistribute it and/or modify it
8 # under the terms and conditions of the GNU General Public License,
9 # version 2 or later, as published by the Free Software Foundation.
11 # This program is distributed in the hope it will be useful, but WITHOUT
12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 # You should have received a copy of the GNU General Public License along with
17 # this program. If not, see <http://www.gnu.org/licenses/>.
21 %rs1_3 7:3 !function=ex_rvc_register
22 %rs2_3 2:3 !function=ex_rvc_register
27 %nzuimm_ciw 7:4 11:2 5:1 6:1 !function=ex_shift_2
28 %uimm_cl_d 5:2 10:3 !function=ex_shift_3
29 %uimm_cl_w 5:1 10:3 6:1 !function=ex_shift_2
30 %imm_cb 12:s1 5:2 2:1 10:2 3:2 !function=ex_shift_1
31 %imm_cj 12:s1 8:1 9:2 6:1 7:1 2:1 11:1 3:3 !function=ex_shift_1
33 %shimm_6bit 12:1 2:5 !function=ex_rvc_shifti
34 %uimm_6bit_ld 2:3 12:1 5:2 !function=ex_shift_3
35 %uimm_6bit_lw 2:2 12:1 4:3 !function=ex_shift_2
36 %uimm_6bit_sd 7:3 10:3 !function=ex_shift_3
37 %uimm_6bit_sw 7:2 9:4 !function=ex_shift_2
39 %imm_addi16sp 12:s1 3:2 5:1 2:1 6:1 !function=ex_shift_4
40 %imm_lui 12:s1 2:5 !function=ex_shift_12
43 # Argument sets imported from insn32.decode:
47 &s imm rs1 rs2 !extern
49 &b imm rs2 rs1 !extern
51 &shift shamt rs1 rd !extern
55 @cr .... ..... ..... .. &r rs2=%rs2_5 rs1=%rd %rd
56 @ci ... . ..... ..... .. &i imm=%imm_ci rs1=%rd %rd
57 @cl_d ... ... ... .. ... .. &i imm=%uimm_cl_d rs1=%rs1_3 rd=%rs2_3
58 @cl_w ... ... ... .. ... .. &i imm=%uimm_cl_w rs1=%rs1_3 rd=%rs2_3
59 @cs_2 ... ... ... .. ... .. &r rs2=%rs2_3 rs1=%rs1_3 rd=%rs1_3
60 @cs_d ... ... ... .. ... .. &s imm=%uimm_cl_d rs1=%rs1_3 rs2=%rs2_3
61 @cs_w ... ... ... .. ... .. &s imm=%uimm_cl_w rs1=%rs1_3 rs2=%rs2_3
62 @cj ... ........... .. &j imm=%imm_cj
63 @cb_z ... ... ... .. ... .. &b imm=%imm_cb rs1=%rs1_3 rs2=0
65 @c_ldsp ... . ..... ..... .. &i imm=%uimm_6bit_ld rs1=2 %rd
66 @c_lwsp ... . ..... ..... .. &i imm=%uimm_6bit_lw rs1=2 %rd
67 @c_sdsp ... . ..... ..... .. &s imm=%uimm_6bit_sd rs1=2 rs2=%rs2_5
68 @c_swsp ... . ..... ..... .. &s imm=%uimm_6bit_sw rs1=2 rs2=%rs2_5
69 @c_li ... . ..... ..... .. &i imm=%imm_ci rs1=0 %rd
70 @c_lui ... . ..... ..... .. &u imm=%imm_lui %rd
71 @c_jalr ... . ..... ..... .. &i imm=0 rs1=%rd
72 @c_mv ... . ..... ..... .. &i imm=0 rs1=%rs2_5 %rd
74 @c_addi4spn ... . ..... ..... .. &i imm=%nzuimm_ciw rs1=2 rd=%rs2_3
75 @c_addi16sp ... . ..... ..... .. &i imm=%imm_addi16sp rs1=2 rd=2
77 @c_shift ... . .. ... ..... .. \
78 &shift rd=%rs1_3 rs1=%rs1_3 shamt=%shimm_6bit
79 @c_shift2 ... . .. ... ..... .. \
80 &shift rd=%rd rs1=%rd shamt=%shimm_6bit
82 @c_andi ... . .. ... ..... .. &i imm=%imm_ci rs1=%rs1_3 rd=%rs1_3
84 # *** RV32/64C Standard Extension (Quadrant 0) ***
86 # Opcode of all zeros is illegal; rd != 0, nzuimm == 0 is reserved.
87 illegal 000 000 000 00 --- 00
88 addi 000 ... ... .. ... 00 @c_addi4spn
90 fld 001 ... ... .. ... 00 @cl_d
91 lw 010 ... ... .. ... 00 @cl_w
92 fsd 101 ... ... .. ... 00 @cs_d
93 sw 110 ... ... .. ... 00 @cs_w
95 # *** RV32C and RV64C specific Standard Extension (Quadrant 0) ***
97 ld 011 ... ... .. ... 00 @cl_d
98 flw 011 ... ... .. ... 00 @cl_w
101 sd 111 ... ... .. ... 00 @cs_d
102 fsw 111 ... ... .. ... 00 @cs_w
105 # *** RV32/64C Standard Extension (Quadrant 1) ***
106 addi 000 . ..... ..... 01 @ci
107 addi 010 . ..... ..... 01 @c_li
109 illegal 011 0 ----- 00000 01 # c.addi16sp and c.lui, RES nzimm=0
110 addi 011 . 00010 ..... 01 @c_addi16sp
111 lui 011 . ..... ..... 01 @c_lui
113 srli 100 . 00 ... ..... 01 @c_shift
114 srai 100 . 01 ... ..... 01 @c_shift
115 andi 100 . 10 ... ..... 01 @c_andi
116 sub 100 0 11 ... 00 ... 01 @cs_2
117 xor 100 0 11 ... 01 ... 01 @cs_2
118 or 100 0 11 ... 10 ... 01 @cs_2
119 and 100 0 11 ... 11 ... 01 @cs_2
120 jal 101 ........... 01 @cj rd=0 # C.J
121 beq 110 ... ... ..... 01 @cb_z
122 bne 111 ... ... ..... 01 @cb_z
124 # *** RV64C and RV32C specific Standard Extension (Quadrant 1) ***
126 c64_illegal 001 - 00000 ----- 01 # c.addiw, RES rd=0
127 addiw 001 . ..... ..... 01 @ci
128 jal 001 ........... 01 @cj rd=1 # C.JAL
130 subw 100 1 11 ... 00 ... 01 @cs_2
131 addw 100 1 11 ... 01 ... 01 @cs_2
133 # *** RV32/64C Standard Extension (Quadrant 2) ***
134 slli 000 . ..... ..... 10 @c_shift2
135 fld 001 . ..... ..... 10 @c_ldsp
137 illegal 010 - 00000 ----- 10 # c.lwsp, RES rd=0
138 lw 010 . ..... ..... 10 @c_lwsp
141 illegal 100 0 00000 00000 10 # c.jr, RES rs1=0
142 jalr 100 0 ..... 00000 10 @c_jalr rd=0 # C.JR
143 addi 100 0 ..... ..... 10 @c_mv
146 ebreak 100 1 00000 00000 10
147 jalr 100 1 ..... 00000 10 @c_jalr rd=1 # C.JALR
148 add 100 1 ..... ..... 10 @cr
150 fsd 101 ...... ..... 10 @c_sdsp
151 sw 110 . ..... ..... 10 @c_swsp
153 # *** RV32C and RV64C specific Standard Extension (Quadrant 2) ***
155 c64_illegal 011 - 00000 ----- 10 # c.ldsp, RES rd=0
156 ld 011 . ..... ..... 10 @c_ldsp
157 flw 011 . ..... ..... 10 @c_lwsp
160 sd 111 . ..... ..... 10 @c_sdsp
161 fsw 111 . ..... ..... 10 @c_swsp