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maksyukimaksyuki
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style: add isa regex format
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‎rtl/tc_l2/src/main/scala/core/id/ISADecoder.scala‎

Lines changed: 171 additions & 66 deletions
Original file line numberDiff line numberDiff line change
@@ -3,80 +3,185 @@ package treecorel2
33
import chisel3._
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import chisel3.util._
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6-
object ISADecoder {}
6+
import treecorel2.common.InstConfig
77

8-
class ISADecoder extends Module {
8+
object ISADecoder {
9+
// according to the The RISC-V Instruction Set Manual Volume I: Unprivileged ISA
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// Document Version: 20191213
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// DESC page [15-25] ABI page[130-131]
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/* Integer Register-Immediate Instructions */
14+
// I type inst
15+
def ADDI = BitPat("b?????????????????000?????0010011")
16+
def ADDIW = BitPat("b?????????????????000?????0011011")
17+
def SLTI = BitPat("b?????????????????010?????0010011")
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def SLTIU = BitPat("b?????????????????011?????0010011")
19+
20+
def ANDI = BitPat("b?????????????????111?????0010011")
21+
def ORI = BitPat("b?????????????????110?????0010011")
22+
def XORI = BitPat("b?????????????????100?????0010011")
23+
24+
// special I type inst
25+
def SLLI = BitPat("b000000???????????001?????0010011")
26+
def SLLIW = BitPat("b0000000??????????001?????0011011")
27+
def SRLI = BitPat("b000000???????????101?????0010011")
28+
def SRLIW = BitPat("b0000000??????????101?????0011011")
29+
def SRAI = BitPat("b010000???????????101?????0010011")
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def SRAIW = BitPat("b0100000??????????101?????0011011")
31+
// U type inst
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// LUI - rd = {imm, 12b'0}
33+
def LUI = BitPat("b?????????????????????????0110111")
34+
// AUIPC - rd = PC + {imm, 12b'0}
35+
def AUIPC = BitPat("b?????????????????????????0010111")
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37+
/* Integer Register-Register Operations */
38+
// R type inst
39+
def ADD = BitPat("b0000000??????????000?????0110011")
40+
def ADDW = BitPat("b0000000??????????000?????0111011")
41+
def SLT = BitPat("b0000000??????????010?????0110011")
42+
def SLTU = BitPat("b0000000??????????011?????0110011")
43+
44+
def AND = BitPat("b0000000??????????111?????0110011")
45+
def OR = BitPat("b0000000??????????110?????0110011")
46+
def XOR = BitPat("b0000000??????????100?????0110011")
47+
48+
def SLL = BitPat("b0000000??????????001?????0110011")
49+
def SLLW = BitPat("b0000000??????????001?????0111011")
50+
def SRL = BitPat("b0000000??????????101?????0110011")
51+
def SRLW = BitPat("b0000000??????????101?????0111011")
52+
53+
def SUB = BitPat("b0100000??????????000?????0110011")
54+
def SUBW = BitPat("b0100000??????????000?????0111011")
55+
def SRA = BitPat("b0100000??????????101?????0110011")
56+
def SRAW = BitPat("b0100000??????????101?????0111011")
57+
58+
// NOP - ADDI x0, 0x00(x0)
59+
def NOP = BitPat("b00000000000000000000000000010011")
60+
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/* Control Transfer Instructions */
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// J type inst
63+
def JAL = BitPat("b?????????????????????????1101111")
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// I type inst
65+
def JALR = BitPat("b?????????????????000?????1100111")
66+
// B type inst
67+
def BEQ = BitPat("b?????????????????000?????1100011")
68+
def BNE = BitPat("b?????????????????001?????1100011")
69+
def BLT = BitPat("b?????????????????100?????1100011")
70+
def BLTU = BitPat("b?????????????????110?????1100011")
71+
def BGE = BitPat("b?????????????????101?????1100011")
72+
def BGEU = BitPat("b?????????????????111?????1100011")
73+
74+
/* Load and Store Instructions */
75+
// I type inst
76+
def LB = BitPat("b?????????????????000?????0000011")
77+
def LBU = BitPat("b?????????????????100?????0000011")
78+
def LH = BitPat("b?????????????????001?????0000011")
79+
def LHU = BitPat("b?????????????????101?????0000011")
80+
def LW = BitPat("b?????????????????010?????0000011")
81+
def LWU = BitPat("b?????????????????110?????0000011")
82+
def LD = BitPat("b?????????????????011?????0000011")
83+
84+
// S type inst
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def SB = BitPat("b?????????????????000?????0100011")
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def SH = BitPat("b?????????????????001?????0100011")
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def SW = BitPat("b?????????????????010?????0100011")
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def SD = BitPat("b?????????????????011?????0100011")
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90+
// CSR inst
91+
def CSRRW = BitPat("b?????????????????001?????1110011")
92+
def CSRRS = BitPat("b?????????????????010?????1110011")
93+
def CSRRC = BitPat("b?????????????????011?????1110011")
94+
def CSRRWI = BitPat("b?????????????????101?????1110011")
95+
def CSRRSI = BitPat("b?????????????????110?????1110011")
96+
def CSRRCI = BitPat("b?????????????????111?????1110011")
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98+
// system inst
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def ECALL = BitPat("b00000000000000000000000001110011")
100+
def EBREAK = BitPat("b00000000000100000000000001110011")
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def URET = BitPat("b00000000001000000000000001110011")
102+
def SRET = BitPat("b00010000001000000000000001110011")
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def MRET = BitPat("b00110000001000000000000001110011")
104+
def WFI = BitPat("b00010000010100000000000001110011")
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def SFENCE_VMA = BitPat("b0001001??????????000000001110011")
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def FENCE = BitPat("b0000????????00000000000000001111")
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def FENCE_I = BitPat("b00000000000000000001000000001111")
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// custom inst such as 0x7B
109+
def CUST = BitPat("b0000000??????????000?????1111011")
110+
}
111+
112+
class ISADecoder extends Module with InstConfig {
9113
val io = IO(new Bundle {
10-
val inst = Input(UInt(32.W))
114+
val inst = Input(UInt(InstLen.W))
11115
val isa = Output(new ISAIO)
12116
val imm = Output(new IMMIO)
13117
val csr = Output(new Bool())
14118
val wen = Output(new Bool())
15119
})
16120

17-
io.isa.SLLI := (io.inst === BitPat("b000000??????_?????_001_?????_0010011"))
18-
io.isa.SLLIW := (io.inst === BitPat("b000000??????_?????_001_?????_0011011"))
19-
io.isa.SRLI := (io.inst === BitPat("b000000??????_?????_101_?????_0010011"))
20-
io.isa.SRLIW := (io.inst === BitPat("b000000??????_?????_101_?????_0011011"))
21-
io.isa.SRAI := (io.inst === BitPat("b010000??????_?????_101_?????_0010011"))
22-
io.isa.SRAIW := (io.inst === BitPat("b010000??????_?????_101_?????_0011011"))
23-
io.isa.ADDI := (io.inst === BitPat("b????????????_?????_000_?????_0010011"))
24-
io.isa.ADDIW := (io.inst === BitPat("b????????????_?????_000_?????_0011011"))
25-
io.isa.XORI := (io.inst === BitPat("b????????????_?????_100_?????_0010011"))
26-
io.isa.ORI := (io.inst === BitPat("b????????????_?????_110_?????_0010011"))
27-
io.isa.ANDI := (io.inst === BitPat("b????????????_?????_111_?????_0010011"))
28-
io.isa.SLTI := (io.inst === BitPat("b????????????_?????_010_?????_0010011"))
29-
io.isa.SLTIU := (io.inst === BitPat("b????????????_?????_011_?????_0010011"))
30-
io.isa.JALR := (io.inst === BitPat("b????????????_?????_000_?????_1100111"))
31-
io.isa.FENCE := (io.inst === BitPat("b0000????????_00000_000_00000_0001111"))
32-
io.isa.FENCE_I := (io.inst === BitPat("b000000000000_00000_001_00000_0001111"))
33-
io.isa.ECALL := (io.inst === BitPat("b000000000000_00000_000_00000_1110011"))
34-
io.isa.EBREAK := (io.inst === BitPat("b000000000001_00000_000_00000_1110011"))
35-
io.isa.CSRRW := (io.inst === BitPat("b????????????_?????_001_?????_1110011"))
36-
io.isa.CSRRWI := (io.inst === BitPat("b????????????_?????_101_?????_1110011"))
37-
io.isa.CSRRS := (io.inst === BitPat("b????????????_?????_010_?????_1110011"))
38-
io.isa.CSRRSI := (io.inst === BitPat("b????????????_?????_110_?????_1110011"))
39-
io.isa.CSRRC := (io.inst === BitPat("b????????????_?????_011_?????_1110011"))
40-
io.isa.CSRRCI := (io.inst === BitPat("b????????????_?????_111_?????_1110011"))
41-
io.isa.LD := (io.inst === BitPat("b????????????_?????_011_?????_0000011"))
42-
io.isa.LW := (io.inst === BitPat("b????????????_?????_010_?????_0000011"))
43-
io.isa.LWU := (io.inst === BitPat("b????????????_?????_110_?????_0000011"))
44-
io.isa.LH := (io.inst === BitPat("b????????????_?????_001_?????_0000011"))
45-
io.isa.LHU := (io.inst === BitPat("b????????????_?????_101_?????_0000011"))
46-
io.isa.LB := (io.inst === BitPat("b????????????_?????_000_?????_0000011"))
47-
io.isa.LBU := (io.inst === BitPat("b????????????_?????_100_?????_0000011"))
48-
io.isa.SLL := (io.inst === BitPat("b000000??????_?????_001_?????_0110011"))
49-
io.isa.SLLW := (io.inst === BitPat("b000000??????_?????_001_?????_0111011"))
50-
io.isa.SRL := (io.inst === BitPat("b000000??????_?????_101_?????_0110011"))
51-
io.isa.SRLW := (io.inst === BitPat("b000000??????_?????_101_?????_0111011"))
52-
io.isa.SRA := (io.inst === BitPat("b010000??????_?????_101_?????_0110011"))
53-
io.isa.SRAW := (io.inst === BitPat("b010000??????_?????_101_?????_0111011"))
54-
io.isa.ADD := (io.inst === BitPat("b000000??????_?????_000_?????_0110011"))
55-
io.isa.ADDW := (io.inst === BitPat("b000000??????_?????_000_?????_0111011"))
56-
io.isa.SUB := (io.inst === BitPat("b010000??????_?????_000_?????_0110011"))
57-
io.isa.SUBW := (io.inst === BitPat("b010000??????_?????_000_?????_0111011"))
58-
io.isa.XOR := (io.inst === BitPat("b000000??????_?????_100_?????_0110011"))
59-
io.isa.OR := (io.inst === BitPat("b000000??????_?????_110_?????_0110011"))
60-
io.isa.AND := (io.inst === BitPat("b000000??????_?????_111_?????_0110011"))
61-
io.isa.SLT := (io.inst === BitPat("b000000??????_?????_010_?????_0110011"))
62-
io.isa.SLTU := (io.inst === BitPat("b000000??????_?????_011_?????_0110011"))
63-
io.isa.MRET := (io.inst === BitPat("b0011000_00010_00000_000_00000_1110011"))
64-
io.isa.SRET := (io.inst === BitPat("b0001000_00010_00000_000_00000_1110011"))
65-
io.isa.WFI := (io.inst === BitPat("b0001000_00101_00000_000_00000_1110011"))
66-
io.isa.SFENCE_VMA := (io.inst === BitPat("b0001001_?????_?????_000_00000_1110011"))
67-
io.isa.BEQ := (io.inst === BitPat("b???????_?????_?????_000_?????_1100011"))
68-
io.isa.BNE := (io.inst === BitPat("b???????_?????_?????_001_?????_1100011"))
69-
io.isa.BLT := (io.inst === BitPat("b???????_?????_?????_100_?????_1100011"))
70-
io.isa.BGE := (io.inst === BitPat("b???????_?????_?????_101_?????_1100011"))
71-
io.isa.BLTU := (io.inst === BitPat("b???????_?????_?????_110_?????_1100011"))
72-
io.isa.BGEU := (io.inst === BitPat("b???????_?????_?????_111_?????_1100011"))
73-
io.isa.SD := (io.inst === BitPat("b???????_?????_?????_011_?????_0100011"))
74-
io.isa.SW := (io.inst === BitPat("b???????_?????_?????_010_?????_0100011"))
75-
io.isa.SH := (io.inst === BitPat("b???????_?????_?????_001_?????_0100011"))
76-
io.isa.SB := (io.inst === BitPat("b???????_?????_?????_000_?????_0100011"))
77-
io.isa.LUI := (io.inst === BitPat("b?????????????????????_?????_0110111"))
78-
io.isa.AUIPC := (io.inst === BitPat("b?????????????????????_?????_0010111"))
79-
io.isa.JAL := (io.inst === BitPat("b?????????????????????_?????_1101111"))
121+
io.isa.SLLI := (io.inst === ISADecoder.SLLI )
122+
io.isa.SLLIW := (io.inst === ISADecoder.SLLIW )
123+
io.isa.SRLI := (io.inst === ISADecoder.SRLI )
124+
io.isa.SRLIW := (io.inst === ISADecoder.SRLIW )
125+
io.isa.SRAI := (io.inst === ISADecoder.SRAI )
126+
io.isa.SRAIW := (io.inst === ISADecoder.SRAIW )
127+
io.isa.ADDI := (io.inst === ISADecoder.ADDI )
128+
io.isa.ADDIW := (io.inst === ISADecoder.ADDIW )
129+
io.isa.XORI := (io.inst === ISADecoder.XORI )
130+
io.isa.ORI := (io.inst === ISADecoder.ORI )
131+
io.isa.ANDI := (io.inst === ISADecoder.ANDI )
132+
io.isa.SLTI := (io.inst === ISADecoder.SLTI )
133+
io.isa.SLTIU := (io.inst === ISADecoder.SLTIU )
134+
io.isa.JALR := (io.inst === ISADecoder.JALR )
135+
io.isa.FENCE := (io.inst === ISADecoder.FENCE )
136+
io.isa.FENCE_I := (io.inst === ISADecoder.FENCE_I )
137+
io.isa.ECALL := (io.inst === ISADecoder.ECALL )
138+
io.isa.EBREAK := (io.inst === ISADecoder.EBREAK )
139+
io.isa.CSRRW := (io.inst === ISADecoder.CSRRW )
140+
io.isa.CSRRWI := (io.inst === ISADecoder.CSRRWI )
141+
io.isa.CSRRS := (io.inst === ISADecoder.CSRRS )
142+
io.isa.CSRRSI := (io.inst === ISADecoder.CSRRSI )
143+
io.isa.CSRRC := (io.inst === ISADecoder.CSRRC )
144+
io.isa.CSRRCI := (io.inst === ISADecoder.CSRRCI )
145+
io.isa.LD := (io.inst === ISADecoder.LD )
146+
io.isa.LW := (io.inst === ISADecoder.LW )
147+
io.isa.LWU := (io.inst === ISADecoder.LWU )
148+
io.isa.LH := (io.inst === ISADecoder.LH )
149+
io.isa.LHU := (io.inst === ISADecoder.LHU )
150+
io.isa.LB := (io.inst === ISADecoder.LB )
151+
io.isa.LBU := (io.inst === ISADecoder.LBU )
152+
io.isa.SLL := (io.inst === ISADecoder.SLL )
153+
io.isa.SLLW := (io.inst === ISADecoder.SLLW )
154+
io.isa.SRL := (io.inst === ISADecoder.SRL )
155+
io.isa.SRLW := (io.inst === ISADecoder.SRLW )
156+
io.isa.SRA := (io.inst === ISADecoder.SRA )
157+
io.isa.SRAW := (io.inst === ISADecoder.SRAW )
158+
io.isa.ADD := (io.inst === ISADecoder.ADD )
159+
io.isa.ADDW := (io.inst === ISADecoder.ADDW )
160+
io.isa.SUB := (io.inst === ISADecoder.SUB )
161+
io.isa.SUBW := (io.inst === ISADecoder.SUBW )
162+
io.isa.XOR := (io.inst === ISADecoder.XOR )
163+
io.isa.OR := (io.inst === ISADecoder.OR )
164+
io.isa.AND := (io.inst === ISADecoder.AND )
165+
io.isa.SLT := (io.inst === ISADecoder.SLT )
166+
io.isa.SLTU := (io.inst === ISADecoder.SLTU )
167+
io.isa.MRET := (io.inst === ISADecoder.MRET )
168+
io.isa.SRET := (io.inst === ISADecoder.SRET )
169+
io.isa.WFI := (io.inst === ISADecoder.WFI )
170+
io.isa.SFENCE_VMA := (io.inst === ISADecoder.SFENCE_VMA)
171+
io.isa.BEQ := (io.inst === ISADecoder.BEQ )
172+
io.isa.BNE := (io.inst === ISADecoder.BNE )
173+
io.isa.BLT := (io.inst === ISADecoder.BLT )
174+
io.isa.BGE := (io.inst === ISADecoder.BGE )
175+
io.isa.BLTU := (io.inst === ISADecoder.BLTU )
176+
io.isa.BGEU := (io.inst === ISADecoder.BGEU )
177+
io.isa.SD := (io.inst === ISADecoder.SD )
178+
io.isa.SW := (io.inst === ISADecoder.SW )
179+
io.isa.SH := (io.inst === ISADecoder.SH )
180+
io.isa.SB := (io.inst === ISADecoder.SB )
181+
io.isa.LUI := (io.inst === ISADecoder.LUI )
182+
io.isa.AUIPC := (io.inst === ISADecoder.AUIPC )
183+
io.isa.JAL := (io.inst === ISADecoder.JAL )
184+
80185
io.isa.MUL := (io.inst === BitPat("b0000001_?????_?????_000_?????_0110011"))
81186
io.isa.MULH := (io.inst === BitPat("b0000001_?????_?????_001_?????_0110011"))
82187
io.isa.MULHSU := (io.inst === BitPat("b0000001_?????_?????_010_?????_0110011"))

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