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skyleaworlderskyleaworlder
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M: mod instructions type, and some comment
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‎instructions_54.py‎

Lines changed: 73 additions & 57 deletions
Original file line numberDiff line numberDiff line change
@@ -1,72 +1,88 @@
11
# reference: https://www.cs.cmu.edu/afs/cs/academic/class/15740-f97/public/doc/mips-isa.pdf
22
instr_set = {
3-
# 21
4-
"j": { "OP": 0b000010, "FUNCT": "unlimited" },
5-
"jal": { "OP": 0b000011, "FUNCT": "unlimited" },
6-
"beq": { "OP": 0b000100, "FUNCT": "unlimited" },
7-
"bne": { "OP": 0b000101, "FUNCT": "unlimited" },
8-
"addi": { "OP": 0b001000, "FUNCT": "unlimited" },
9-
"addiu": { "OP": 0b001001, "FUNCT": "unlimited" },
10-
"slti": { "OP": 0b001010, "FUNCT": "unlimited" },
11-
"sltiu": { "OP": 0b001011, "FUNCT": "unlimited" },
12-
"andi": { "OP": 0b001100, "FUNCT": "unlimited" },
13-
"ori": { "OP": 0b001101, "FUNCT": "unlimited" },
14-
"xori": { "OP": 0b001110, "FUNCT": "unlimited" },
15-
"lui": { "OP": 0b001111, "RS": 0b00000, "FUNCT": "unlimited" },
3+
# 2
4+
"j": { "OP": 0b000010, "FUNCT": "unlimited" }, # J instr_index | J target
5+
"jal": { "OP": 0b000011, "FUNCT": "unlimited" }, # JAL instr_index | JAL target
6+
7+
# 2
8+
"beq": { "OP": 0b000100, "FUNCT": "unlimited" }, # BEQ rs rt immed | BEQ rs, rt, offset
9+
"bne": { "OP": 0b000101, "FUNCT": "unlimited" }, # BNE rs rt immed | BNE rs, rt, offset
10+
11+
# 16
12+
"addi": { "OP": 0b001000, "FUNCT": "unlimited" }, # OP rs rt immed | OP rt, rs, offset
13+
"addiu": { "OP": 0b001001, "FUNCT": "unlimited" }, # OP rs rt immed | OP rt, rs, offset
14+
"slti": { "OP": 0b001010, "FUNCT": "unlimited" }, # OP rs rt immed | OP rt, rs, offset
15+
"sltiu": { "OP": 0b001011, "FUNCT": "unlimited" }, # OP rs rt immed | OP rt, rs, offset
16+
"andi": { "OP": 0b001100, "FUNCT": "unlimited" }, # OP rs rt immed | OP rt, rs, offset
17+
"ori": { "OP": 0b001101, "FUNCT": "unlimited" }, # OP rs rt immed | OP rt, rs, offset
18+
"xori": { "OP": 0b001110, "FUNCT": "unlimited" }, # OP rs rt immed | OP rt, rs, offset
1619
"clz": { "OP": 0b011100, "FUNCT": "unlimited" },
17-
"lb": { "OP": 0b100000, "FUNCT": "unlimited" },
18-
"lh": { "OP": 0b100001, "FUNCT": "unlimited" },
19-
"lw": { "OP": 0b100011, "FUNCT": "unlimited" },
20-
"lbu": { "OP": 0b100100, "FUNCT": "unlimited" },
21-
"lhu": { "OP": 0b100101, "FUNCT": "unlimited" },
22-
"sb": { "OP": 0b101000, "FUNCT": "unlimited" },
23-
"sh": { "OP": 0b101001, "FUNCT": "unlimited" },
24-
"sw": { "OP": 0b101011, "FUNCT": "unlimited" },
25-
26-
# 14
27-
"mul": { "OP": 0b011100, "SA": 0b00000, "FUNCT": 0b000010 },
28-
"sllv": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b000100 },
29-
"srlv": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b000110 },
30-
"srav": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b000111 },
31-
"add": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b100000 },
32-
"addu": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b100001 },
33-
"sub": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b100010 },
34-
"subu": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b100011 },
35-
"and": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b100100 },
36-
"or": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b100101 },
37-
"xor": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b100110 },
38-
"nor": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b100111 },
39-
"slt": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b101010 },
40-
"sltu": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b101011 },
20+
"lb": { "OP": 0b100000, "FUNCT": "unlimited" }, # OP rs rt immed | OP rt, offset(rs)
21+
"lh": { "OP": 0b100001, "FUNCT": "unlimited" }, # OP rs rt immed | OP rt, offset(rs)
22+
"lw": { "OP": 0b100011, "FUNCT": "unlimited" }, # OP rs rt immed | OP rt, offset(rs)
23+
"lbu": { "OP": 0b100100, "FUNCT": "unlimited" }, # OP rs rt immed | OP rt, offset(rs)
24+
"lhu": { "OP": 0b100101, "FUNCT": "unlimited" }, # OP rs rt immed | OP rt, offset(rs)
25+
"sb": { "OP": 0b101000, "FUNCT": "unlimited" }, # OP rs rt immed | OP rt, offset(rs)
26+
"sh": { "OP": 0b101001, "FUNCT": "unlimited" }, # OP rs rt immed | OP rt, offset(rs)
27+
"sw": { "OP": 0b101011, "FUNCT": "unlimited" }, # OP rs rt immed | OP rt, offset(rs)
28+
29+
# 1
30+
"lui": { "OP": 0b001111, "RS": 0b00000, "FUNCT": "unlimited" }, # LUI 0 rt immed | LUI rt, offset
31+
32+
# 1
33+
"mul": { "OP": 0b011100, "SA": 0b00000, "FUNCT": 0b000010 }, # MUL rs rt rd 0 MUL | MUL rd, rs, rt
34+
35+
# 13
36+
"sllv": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b000100 }, # SPECIAL rs rt rd 0 SLLV | SLLV rd, rt, rs
37+
"srlv": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b000110 }, # SPECIAL rs rt rd 0 SRLV | SRLV rd, rt, rs
38+
"srav": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b000111 }, # SPECIAL rs rt rd 0 SRAV | SRAV rd, rt, rs
39+
"add": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b100000 }, # SPECIAL rs rt rd 0 ADD | ADD rd, rs, rt
40+
"addu": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b100001 }, # SPECIAL rs rt rd 0 ADDU | ADDU rd, rs, rt
41+
"sub": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b100010 }, # SPECIAL rs rt rd 0 SUB | SUB rd, rs, rt
42+
"subu": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b100011 }, # SPECIAL rs rt rd 0 SUBU | SUBU rd, rs, rt
43+
"and": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b100100 }, # SPECIAL rs rt rd 0 AND | AND rd, rs, rt
44+
"or": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b100101 }, # SPECIAL rs rt rd 0 OR | OR rd, rs, rt
45+
"xor": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b100110 }, # SPECIAL rs rt rd 0 XOR | XOR rd, rs, rt
46+
"nor": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b100111 }, # SPECIAL rs rt rd 0 NOR | NOR rd, rs, rt
47+
"slt": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b101010 }, # SPECIAL rs rt rd 0 SLT | SLT rd, rs, rt
48+
"sltu": { "OP": 0b000000, "SA": 0b00000, "FUNCT": 0b101011 }, # SPECIAL rs rt rd 0 SLTU | SLTU rd, rs, rt
4149

4250
# 3
43-
"sll": { "OP": 0b000000, "RS": 0b00000, "FUNCT": 0b000000 },
44-
"srl": { "OP": 0b000000, "RS": 0b00000, "FUNCT": 0b000010 },
45-
"sra": { "OP": 0b000000, "RS": 0b00000, "FUNCT": 0b000011 },
51+
"sll": { "OP": 0b000000, "RS": 0b00000, "FUNCT": 0b000000 }, # SPECIAL 0 rt, rd, sa, SLL | SLL rd, rt, sa
52+
"srl": { "OP": 0b000000, "RS": 0b00000, "FUNCT": 0b000010 }, # SPECIAL 0 rt, rd, sa, SRL | SRL rd, rt, sa
53+
"sra": { "OP": 0b000000, "RS": 0b00000, "FUNCT": 0b000011 }, # SPECIAL 0 rt, rd, sa, SRA | SRA rd, rt, sa
4654

4755
# 4
48-
"mult": { "OP": 0b000000, "RD": 0b00000, "SA": 0b00000, "FUNCT": 0b011000 },
49-
"multu": { "OP": 0b000000, "RD": 0b00000, "SA": 0b00000, "FUNCT": 0b011001 },
50-
"div": { "OP": 0b000000, "RD": 0b00000, "SA": 0b00000, "FUNCT": 0b011010 },
51-
"divu": { "OP": 0b000000, "RD": 0b00000, "SA": 0b00000, "FUNCT": 0b011011 },
56+
"mult": { "OP": 0b000000, "RD": 0b00000, "SA": 0b00000, "FUNCT": 0b011000 }, # SPECIAL rs rt 10{0} MULTU | MULTU rs, rt
57+
"multu": { "OP": 0b000000, "RD": 0b00000, "SA": 0b00000, "FUNCT": 0b011001 }, # SPECIAL rs rt 10{0} MULTU | MULTU rs, rt
58+
"div": { "OP": 0b000000, "RD": 0b00000, "SA": 0b00000, "FUNCT": 0b011010 }, # SPECIAL rs rt 10{0} DIV | DIV rs, rt
59+
"divu": { "OP": 0b000000, "RD": 0b00000, "SA": 0b00000, "FUNCT": 0b011011 }, # SPECIAL rs rt 10{0} DIVU | DIVU rs, rt
5260

53-
# 3
54-
"syscall": { "OP": 0b000000, "FUNCT": 0b001100 },
61+
# 2
62+
"syscall": { "OP": 0b000000, "FUNCT": 0b001100 }, # SPECIAL code SYSCALL | SYSCALL
5563
"break": { "OP": 0b000000, "FUNCT": 0b001101 }, # SPECIAL code BREAK | BREAK
56-
"teq": { "OP": 0b000000, "FUNCT": 0b110100 },
5764

58-
# 3
59-
"bgez": { "OP": 0b000001, "RT": 0b00001, "FUNCT": "unlimited" }, # REGIMM rs BGEZ offset | BGEZ rs, offset
60-
"jr": { "OP": 0b000000, "RT": 0b00000, "RD": 0b00000, "SA": 0b00000, "FUNCT": 0b001000 },
65+
# 1
66+
"teq": { "OP": 0b000000, "FUNCT": 0b110100 }, # SPECIAL rs rt code TEQ | TEQ rs, rt
67+
68+
# 1
6169
"jalr": { "OP": 0b000000, "RT": 0b00000, "SA": 0b00000, "FUNCT": 0b001001 }, # SPECIAL rs 0 rd 0 JALR | JALR rs (rd = 31 implied) | JALR rd, rs
6270

63-
# 7
64-
"mfc0": { "OP": 0b010000, "RS": 0b00000, "SA": 0b00000, "FUNCT": 0b000000 },
65-
"mtc0": { "OP": 0b010000, "RS": 0b00100, "SA": 0b00000, "FUNCT": 0b000000 },
66-
"mfhi": { "OP": 0b000000, "RS": 0b00000, "RT": 0b00000, "SA": 0b00000, "FUNCT": 0b010000 },
67-
"mflo": { "OP": 0b000000, "RS": 0b00000, "RT": 0b00000, "SA": 0b00000, "FUNCT": 0b010010 },
68-
"mthi": { "OP": 0b000000, "RT": 0b00000, "RD": 0b00000, "SA": 0b00000, "FUNCT": 0b010001 },
69-
"mtlo": { "OP": 0b000000, "RT": 0b00000, "RD": 0b00000, "SA": 0b00000, "FUNCT": 0b010011 },
71+
# 2
72+
"mfhi": { "OP": 0b000000, "RS": 0b00000, "RT": 0b00000, "SA": 0b00000, "FUNCT": 0b010000 }, # SPECIAL 10{0} rd 0 MFHI | MFHI rd
73+
"mflo": { "OP": 0b000000, "RS": 0b00000, "RT": 0b00000, "SA": 0b00000, "FUNCT": 0b010010 }, # SPECIAL 10{0} rd 0 MFLO | MFLO rd
74+
75+
# 3
76+
"jr": { "OP": 0b000000, "RT": 0b00000, "RD": 0b00000, "SA": 0b00000, "FUNCT": 0b001000 }, # SPECIAL rs 15{0} JR | JR rs
77+
"mthi": { "OP": 0b000000, "RT": 0b00000, "RD": 0b00000, "SA": 0b00000, "FUNCT": 0b010001 }, # SPECIAL rs 15{0} MTHI | MTHI rs
78+
"mtlo": { "OP": 0b000000, "RT": 0b00000, "RD": 0b00000, "SA": 0b00000, "FUNCT": 0b010011 }, # SPECIAL rs 15{0} MTLO | MTLO rs
79+
80+
# 2
81+
"mfc0": { "OP": 0b010000, "RS": 0b00000, "SA": 0b00000, "FUNCT": 0b000000 }, # COP0 MF rt fs 11{0} | MFC0 rt, fs
82+
"mtc0": { "OP": 0b010000, "RS": 0b00100, "SA": 0b00000, "FUNCT": 0b000000 }, # COP0 MT rt fs 11{0} | MTC0 rt, fs
83+
84+
# 1
85+
"bgez": { "OP": 0b000001, "RT": 0b00001, "FUNCT": "unlimited" }, # REGIMM rs rt(BGEZ) offset | BGEZ rs, offset
7086

7187
# 1
7288
"eret": { "OP": 0b100000, "RS": 0b10000, "RT": 0b00000, "RD": 0b00000, "SA": 0b00000, "FUNCT": 0b011000 },

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