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_q 10:1 5:2 11:2 !function=ex_shift_4
29 %uimm_cl_d 5:2 10:3 !function=ex_shift_3
30 %uimm_cl_w 5:1 10:3 6:1 !function=ex_shift_2
31 %imm_cb 12:s1 5:2 2:1 10:2 3:2 !function=ex_shift_1
32 %imm_cj 12:s1 8:1 9:2 6:1 7:1 2:1 11:1 3:3 !function=ex_shift_1
34 %shlimm_6bit 12:1 2:5 !function=ex_rvc_shiftli
35 %shrimm_6bit 12:1 2:5 !function=ex_rvc_shiftri
36 %uimm_6bit_lq 2:4 12:1 6:1 !function=ex_shift_4
37 %uimm_6bit_ld 2:3 12:1 5:2 !function=ex_shift_3
38 %uimm_6bit_lw 2:2 12:1 4:3 !function=ex_shift_2
39 %uimm_6bit_sq 7:4 11:2 !function=ex_shift_4
40 %uimm_6bit_sd 7:3 10:3 !function=ex_shift_3
41 %uimm_6bit_sw 7:2 9:4 !function=ex_shift_2
43 %imm_addi16sp 12:s1 3:2 5:1 2:1 6:1 !function=ex_shift_4
44 %imm_lui 12:s1 2:5 !function=ex_shift_12
47 # Argument sets imported from insn32.decode:
51 &s imm rs1 rs2 !extern
53 &b imm rs2 rs1 !extern
55 &shift shamt rs1 rd !extern
59 @cr .... ..... ..... .. &r rs2=%rs2_5 rs1=%rd %rd
60 @ci ... . ..... ..... .. &i imm=%imm_ci rs1=%rd %rd
61 @cl_q ... . ..... ..... .. &i imm=%uimm_cl_q rs1=%rs1_3 rd=%rs2_3
62 @cl_d ... ... ... .. ... .. &i imm=%uimm_cl_d rs1=%rs1_3 rd=%rs2_3
63 @cl_w ... ... ... .. ... .. &i imm=%uimm_cl_w rs1=%rs1_3 rd=%rs2_3
64 @cs_2 ... ... ... .. ... .. &r rs2=%rs2_3 rs1=%rs1_3 rd=%rs1_3
65 @cs_q ... ... ... .. ... .. &s imm=%uimm_cl_q rs1=%rs1_3 rs2=%rs2_3
66 @cs_d ... ... ... .. ... .. &s imm=%uimm_cl_d rs1=%rs1_3 rs2=%rs2_3
67 @cs_w ... ... ... .. ... .. &s imm=%uimm_cl_w rs1=%rs1_3 rs2=%rs2_3
68 @cj ... ........... .. &j imm=%imm_cj
69 @cb_z ... ... ... .. ... .. &b imm=%imm_cb rs1=%rs1_3 rs2=0
71 @c_lqsp ... . ..... ..... .. &i imm=%uimm_6bit_lq rs1=2 %rd
72 @c_ldsp ... . ..... ..... .. &i imm=%uimm_6bit_ld rs1=2 %rd
73 @c_lwsp ... . ..... ..... .. &i imm=%uimm_6bit_lw rs1=2 %rd
74 @c_sqsp ... . ..... ..... .. &s imm=%uimm_6bit_sq rs1=2 rs2=%rs2_5
75 @c_sdsp ... . ..... ..... .. &s imm=%uimm_6bit_sd rs1=2 rs2=%rs2_5
76 @c_swsp ... . ..... ..... .. &s imm=%uimm_6bit_sw rs1=2 rs2=%rs2_5
77 @c_li ... . ..... ..... .. &i imm=%imm_ci rs1=0 %rd
78 @c_lui ... . ..... ..... .. &u imm=%imm_lui %rd
79 @c_jalr ... . ..... ..... .. &i imm=0 rs1=%rd
80 @c_mv ... . ..... ..... .. &i imm=0 rs1=%rs2_5 %rd
82 @c_addi4spn ... . ..... ..... .. &i imm=%nzuimm_ciw rs1=2 rd=%rs2_3
83 @c_addi16sp ... . ..... ..... .. &i imm=%imm_addi16sp rs1=2 rd=2
85 @c_shift ... . .. ... ..... .. \
86 &shift rd=%rs1_3 rs1=%rs1_3 shamt=%shrimm_6bit
87 @c_shift2 ... . .. ... ..... .. \
88 &shift rd=%rd rs1=%rd shamt=%shlimm_6bit
90 @c_andi ... . .. ... ..... .. &i imm=%imm_ci rs1=%rs1_3 rd=%rs1_3
92 # *** RV32/64C Standard Extension (Quadrant 0) ***
94 # Opcode of all zeros is illegal; rd != 0, nzuimm == 0 is reserved.
95 illegal 000 000 000 00 --- 00
96 addi 000 ... ... .. ... 00 @c_addi4spn
99 lq 001 ... ... .. ... 00 @cl_q
100 fld 001 ... ... .. ... 00 @cl_d
102 lw 010 ... ... .. ... 00 @cl_w
104 sq 101 ... ... .. ... 00 @cs_q
105 fsd 101 ... ... .. ... 00 @cs_d
107 sw 110 ... ... .. ... 00 @cs_w
109 # *** RV32C and RV64C specific Standard Extension (Quadrant 0) ***
111 ld 011 ... ... .. ... 00 @cl_d
112 flw 011 ... ... .. ... 00 @cl_w
115 sd 111 ... ... .. ... 00 @cs_d
116 fsw 111 ... ... .. ... 00 @cs_w
119 # *** RV32/64C Standard Extension (Quadrant 1) ***
120 addi 000 . ..... ..... 01 @ci
121 addi 010 . ..... ..... 01 @c_li
123 illegal 011 0 ----- 00000 01 # c.addi16sp and c.lui, RES nzimm=0
124 addi 011 . 00010 ..... 01 @c_addi16sp
125 lui 011 . ..... ..... 01 @c_lui
127 srli 100 . 00 ... ..... 01 @c_shift
128 srai 100 . 01 ... ..... 01 @c_shift
129 andi 100 . 10 ... ..... 01 @c_andi
130 sub 100 0 11 ... 00 ... 01 @cs_2
131 xor 100 0 11 ... 01 ... 01 @cs_2
132 or 100 0 11 ... 10 ... 01 @cs_2
133 and 100 0 11 ... 11 ... 01 @cs_2
134 jal 101 ........... 01 @cj rd=0 # C.J
135 beq 110 ... ... ..... 01 @cb_z
136 bne 111 ... ... ..... 01 @cb_z
138 # *** RV64C and RV32C specific Standard Extension (Quadrant 1) ***
140 c64_illegal 001 - 00000 ----- 01 # c.addiw, RES rd=0
141 addiw 001 . ..... ..... 01 @ci
142 jal 001 ........... 01 @cj rd=1 # C.JAL
144 subw 100 1 11 ... 00 ... 01 @cs_2
145 addw 100 1 11 ... 01 ... 01 @cs_2
147 # *** RV32/64C Standard Extension (Quadrant 2) ***
148 slli 000 . ..... ..... 10 @c_shift2
150 lq 001 ... ... .. ... 10 @c_lqsp
151 fld 001 . ..... ..... 10 @c_ldsp
154 illegal 010 - 00000 ----- 10 # c.lwsp, RES rd=0
155 lw 010 . ..... ..... 10 @c_lwsp
158 illegal 100 0 00000 00000 10 # c.jr, RES rs1=0
159 jalr 100 0 ..... 00000 10 @c_jalr rd=0 # C.JR
160 addi 100 0 ..... ..... 10 @c_mv
163 ebreak 100 1 00000 00000 10
164 jalr 100 1 ..... 00000 10 @c_jalr rd=1 # C.JALR
165 add 100 1 ..... ..... 10 @cr
168 sq 101 ... ... .. ... 10 @c_sqsp
169 fsd 101 ...... ..... 10 @c_sdsp
171 sw 110 . ..... ..... 10 @c_swsp
173 # *** RV32C and RV64C specific Standard Extension (Quadrant 2) ***
175 c64_illegal 011 - 00000 ----- 10 # c.ldsp, RES rd=0
176 ld 011 . ..... ..... 10 @c_ldsp
177 flw 011 . ..... ..... 10 @c_lwsp
180 sd 111 . ..... ..... 10 @c_sdsp
181 fsw 111 . ..... ..... 10 @c_swsp