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MIPS/tools/decoder.py

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decode tools
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table = [
try add MOVZ, MOVN
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# ('000000000000000000000?????001111', 'SYNC'),
try add trap
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# ('00000000000???????????????000000', 'SLL'),
try add MOVZ, MOVN
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# ('00000000000???????????????000010', 'SRL'),
# ('00000000000???????????????000011', 'SRA'),
# ('000000???????????????00000000100', 'SLLV'),
# ('000000???????????????00000000110', 'SRLV'),
# ('000000???????????????00000000111', 'SRAV'),
try add trap
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# ('000000???????????????00000001010', 'MOVZ'),
# ('000000???????????????00000001011', 'MOVN'),
try add MOVZ, MOVN
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# ('000000?????000000000000000001000', 'JR'),
# ('000000?????00000?????00000001001', 'JALR'),
# ('000000????????????????????001100', 'SYSCALL'),
# ('000000????????????????????001101', 'BREAK'),
# ('0000000000000000?????00000010000', 'MFHI'),
# ('000000?????000000000000000010001', 'MTHI'),
# ('0000000000000000?????00000010010', 'MFLO'),
# ('000000?????000000000000000010011', 'MTLO'),
# ('000000??????????0000000000011000', 'MULT'),
# ('000000??????????0000000000011001', 'MULTU'),
# ('000000??????????0000000000011010', 'DIV'),
# ('000000??????????0000000000011011', 'DIVU'),
# ('000000???????????????00000100000', 'ADD'),
# ('000000???????????????00000100001', 'ADDU'),
# ('000000???????????????00000100010', 'SUB'),
# ('000000???????????????00000100011', 'SUBU'),
# ('000000???????????????00000100100', 'AND'),
# ('000000???????????????00000100101', 'OR'),
# ('000000???????????????00000100110', 'XOR'),
# ('000000???????????????00000100111', 'NOR'),
# ('000000???????????????00000101010', 'SLT'),
# ('000000???????????????00000101011', 'SLTU'),
try add trap
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('000000????????????????????110000', 'TGE'),
('000000????????????????????110001', 'TGEU'),
('000000????????????????????110010', 'TLT'),
('000000????????????????????110011', 'TLTU'),
('000000????????????????????110100', 'TEQ'),
('000000????????????????????110110', 'TNE'),
try add MOVZ, MOVN
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# ('000001?????00000????????????????', 'BLTZ'),
# ('000001?????00001????????????????', 'BGEZ'),
try add trap
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('000001?????01000????????????????', 'TGEI'),
('000001?????01001????????????????', 'TGEIU'),
('000001?????01010????????????????', 'TLTI'),
('000001?????01011????????????????', 'TLTIU'),
('000001?????01110????????????????', 'TNEI'),
('000001?????01100????????????????', 'TEQI'),
# ('000001?????10000????????????????', 'BLTZAL'),
try add MOVZ, MOVN
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# ('000001?????10001????????????????', 'BGEZAL'),
# ('000010??????????????????????????', 'J'),
# ('000011??????????????????????????', 'JAL'),
# ('000100??????????????????????????', 'BEQ'),
# ('000101??????????????????????????', 'BNE'),
# ('000110?????00000????????????????', 'BLEZ'),
# ('000111?????00000????????????????', 'BGTZ'),
# ('001000??????????????????????????', 'ADDI'),
# ('001001??????????????????????????', 'ADDIU'),
# ('001010??????????????????????????', 'SLTI'),
# ('001011??????????????????????????', 'SLTIU'),
# ('001100??????????????????????????', 'ANDI'),
# ('001101??????????????????????????', 'ORI'),
# ('001110??????????????????????????', 'XORI'),
# ('00111100000?????????????????????', 'LUI'),
# ('01000000000??????????00000000???', 'MFC0'),
# ('01000000100??????????00000000???', 'MTC0'),
# ('01000010000000000000000000000001', 'TLBR'),
# ('01000010000000000000000000000010', 'TLBWI'),
# ('01000010000000000000000000000110', 'TLBWR'),
# ('01000010000000000000000000001000', 'TLBP'),
# ('01000010000000000000000000011000', 'ERET'),
# ('011100??????????0000000000000000', 'MADD'),
# ('011100??????????0000000000000001', 'MADDU'),
# ('011100??????????0000000000000100', 'MSUB'),
# ('011100??????????0000000000000101', 'MSUBU'),
# ('011100???????????????00000000010', 'MUL'),
# ('100000??????????????????????????', 'LB'),
# ('100001??????????????????????????', 'LH'),
# ('100010??????????????????????????', 'LWL'),
# ('100011??????????????????????????', 'LW'),
# ('100100??????????????????????????', 'LBU'),
# ('100101??????????????????????????', 'LHU'),
# ('100110??????????????????????????', 'LWR'),
# ('101000??????????????????????????', 'SB'),
# ('101001??????????????????????????', 'SH'),
# ('101010??????????????????????????', 'SWL'),
# ('101011??????????????????????????', 'SW'),
# ('101110??????????????????????????', 'SWR'),
# ('101111??????????????????????????', 'CACHE'),
# ('110011??????????????????????????', 'PREF'),
decode tools
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]
class Boolean:
def __init__(self, x):
self.x = {'0': -1, '?': 0, '1': 1}.get(x, x)
def __and__(self, other):
return Boolean(min(self.x, other.x))
def __or__(self, other):
return Boolean(max(self.x, other.x))
def __invert__(self):
return Boolean(-self.x)
def __repr__(self):
return {-1: '0', 0: 'x', 1: '1'}[self.x]
for inst, name in table:
inst = list(Boolean(x) for x in inst[::-1])
update control signals for swl/swr
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print('=====', name, '=====')
RW & RS0 fix tools update
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ctrl = {}
try add trap
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ctrl['BJRJ'] = ~inst[26] & (~inst[27] & (~inst[28] & ~inst[30] & ~inst[31] & ~inst[29] & inst[3] & ~inst[1] & ~inst[4] & ~inst[2] | inst[28] & ~inst[29] & ~inst[31]) | inst[27] & ~inst[31] & ~inst[29]) | inst[26] & ~inst[31] & ~inst[29] & (~inst[19] | inst[27] | inst[28])
ctrl['B'] = ~inst[26] & inst[28] & ~inst[29] & ~inst[31] | inst[26] & ~inst[31] & ~inst[29] & (~inst[27] & ~inst[19] | inst[28])
try add MOVZ, MOVN
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ctrl['JR'] = ~inst[31] & ~inst[30] & ~inst[29] & ~inst[28] & ~inst[27] & ~inst[26] & ~inst[4] & inst[3] & ~inst[2] & ~inst[1]
add sync pref as nop
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ctrl['J'] = ~inst[31] & ~inst[29] & ~inst[28] & inst[27]
RW & RS0 fix tools update
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add sync pref as nop
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ctrl['PRV'] = ~inst[31] & inst[30] & ~inst[29]
add LWL and LWR
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RW & RS0 fix tools update
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ctrl['SYSCALL'] = ~inst[31] & ~inst[30] & ~inst[29] & ~inst[28] & ~inst[27] & ~inst[26] & inst[3] & inst[2] & ~inst[0]
add sync pref as nop
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ctrl['BREAK'] = ~inst[31] & ~inst[30] & ~inst[29] & ~inst[28] & ~inst[27] & ~inst[26] & inst[3] & inst[2] & ~inst[1] & inst[0]
ctrl['ERET'] = ~inst[31] & inst[30] & inst[4]
try add trap
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ctrl['OFA'] = ~inst[26] & ~inst[30] & (~inst[29] & ~inst[31] & ~inst[28] & ~inst[27] & inst[5] & ~inst[0] & ~inst[4] & ~inst[2] & ~inst[3] | inst[29] & ~inst[27] & ~inst[31] & ~inst[28])
RW & RS0 fix tools update
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try add trap
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ctrl['ES'] = ~inst[30] & (~inst[28] & ~inst[27] & (~inst[26] & (~inst[3] & inst[2] | inst[3] & (inst[1] | inst[4]) | inst[5]) | inst[26] & inst[19]) | inst[31]) | inst[29]
ctrl['ET'] = ~inst[26] & ~inst[27] & ~inst[31] & (~inst[30] & ~inst[29] & ~inst[28] & (~inst[3] & ~inst[4] | inst[3] & inst[4] | inst[5]) | inst[30] & inst[29])
ctrl['DS'] = ~inst[26] & (~inst[28] & ~inst[30] & ~inst[31] & ~inst[29] & ~inst[27] & inst[3] & ~inst[1] & ~inst[4] & ~inst[2] | inst[28] & ~inst[29] & ~inst[31]) | inst[26] & ~inst[31] & ~inst[29] & (~inst[27] & ~inst[19] | inst[28])
try add MOVZ, MOVN
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ctrl['DT'] = ~inst[28] & ~inst[26] & ~inst[30] & ~inst[31] & ~inst[29] & ~inst[27] & inst[3] & inst[1] & ~inst[5] & ~inst[4] | inst[28] & ~inst[29] & ~inst[31] & ~inst[27]
RW & RS0 fix tools update
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try add trap
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ctrl['DP0'] = ~inst[31] & (~inst[30] & (~inst[26] & (~inst[4] | ~inst[5] | inst[27] | inst[28]) | inst[26] & (~inst[19] | inst[27] | inst[28])) | inst[30] & (~inst[25] | inst[4]) | inst[29]) | inst[31] & inst[30]
ctrl['DP1'] = ~inst[30] & (~inst[4] | inst[5] | inst[28] | inst[29] | inst[31] | inst[27] | inst[26]) | inst[30] & ~inst[29] & (inst[25] | inst[31])
RW & RS0 fix tools update
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ctrl['ECtrl_OP_f_sl'] = ~inst[31] & ~inst[29] & ~inst[28] & ~inst[27] & ~inst[26] & ~inst[5] & ~inst[3] & ~inst[1]
try add MOVZ, MOVN
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ctrl['ECtrl_OP_f_sr'] = ~inst[31] & ~inst[28] & ~inst[26] & ~inst[27] & ~inst[29] & ~inst[5] & ~inst[3] & inst[1]
try add trap
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ctrl['ECtrl_OP_f_add'] = ~inst[28] & (~inst[26] & ~inst[27] & ((~inst[5] & inst[3] & ~inst[1] | inst[5] & (~inst[0] & (~inst[2] & ~inst[4] & ~inst[3] | inst[2] & inst[4]) | inst[0] & ~inst[2] & ~inst[4] & ~inst[3])) | inst[29]) | inst[26] & (~inst[29] & ((~inst[16] & (inst[20] | inst[18]) | inst[16] & inst[20]) | inst[27]) | inst[29] & ~inst[27])) | inst[31]
ctrl['ECtrl_OP_f_and'] = ~inst[31] & (~inst[28] & ~inst[26] & ~inst[27] & ~inst[29] & inst[5] & ~inst[0] & inst[2] & ~inst[4] & ~inst[1] | inst[28] & ~inst[27] & ~inst[26])
try add MOVZ, MOVN
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ctrl['ECtrl_OP_f_or'] = ~inst[31] & (~inst[29] & ~inst[28] & ~inst[27] & ~inst[26] & inst[5] & inst[2] & inst[0] | inst[28] & ~inst[27] & inst[26])
try add trap
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ctrl['ECtrl_OP_f_xor'] = ~inst[31] & (~inst[28] & ~inst[26] & ~inst[27] & ~inst[29] & inst[5] & ~inst[0] & inst[2] & ~inst[4] & inst[1] | inst[28] & inst[27])
ctrl['ECtrl_OP_f_slt'] = ~inst[31] & ~inst[28] & (~inst[26] & (~inst[29] & inst[5] & ~inst[0] & ~inst[2] & (inst[3] | inst[4]) | inst[27]) | inst[26] & ~inst[29] & ~inst[27] & ~inst[16] & ~inst[18] & ~inst[20])
ctrl['ECtrl_OP_f_sltu'] = ~inst[31] & ~inst[28] & (~inst[26] & ~inst[27] & ~inst[29] & inst[5] & inst[0] & ~inst[2] & (inst[3] | inst[4]) | inst[26] & (~inst[29] & ~inst[27] & inst[16] & ~inst[20] | inst[29] & inst[27]))
try add MOVZ, MOVN
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ctrl['ECtrl_OP_f_mova'] = ~inst[31] & ~inst[29] & ~inst[28] & ~inst[27] & ~inst[26] & ~inst[5] & inst[3] & inst[1]
try add trap
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ctrl['ECtrl_OP_alt'] = ~inst[31] & ~inst[28] & (~inst[29] & ~inst[27] & (~inst[26] & (inst[1] & (inst[0] | inst[5]) | inst[4]) | inst[26] & ~inst[20]) | inst[29] & inst[27])
RW & RS0 fix tools update
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try add trap
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ctrl['ECtrl_SA'] = ((~inst[27] & (~inst[26] & ((inst[3] & inst[1] | inst[2]) | inst[5]) | inst[26] & ~inst[20]) | inst[31]) | inst[29], (~inst[28] & (inst[2] | inst[3] | inst[5] | inst[29] | inst[26]) | inst[28] & (~inst[27] | ~inst[26])) | inst[31])
ctrl['ECtrl_SB'] = ((inst[26] & ~inst[27] & ~inst[20] | inst[31]) | inst[29], inst[3] & ~inst[5] | inst[26])
add control signals
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ctrl['imm'] = (~inst[31] & inst[28] & inst[27] & inst[26], inst[31] | ~inst[28])
RW & RS0 fix tools update
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try add trap
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ctrl['MCtrl0_HW'] = ~inst[30] & ~inst[26] & ~inst[29] & ~inst[28] & ~inst[27] & inst[4] & (~inst[5] & ~inst[1] & inst[0] | inst[3]) | inst[30] & inst[29] & ~inst[1]
ctrl['MCtrl0_LW'] = ~inst[30] & ~inst[26] & ~inst[29] & ~inst[28] & ~inst[27] & inst[4] & (~inst[5] & inst[1] & inst[0] | inst[3]) | inst[30] & inst[29] & ~inst[1]
try add MOVZ, MOVN
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ctrl['MCtrl0_HLS'] = (~inst[30] & ~inst[26] & ~inst[27] & ~inst[31] & ~inst[29] & ~inst[28] & inst[4] & inst[3] | inst[30] & inst[29]), inst[1] & ~inst[30], inst[0]
fix bug in decode
2021-08-31 21:11:59 +08:00
ctrl['MCtrl0_MAS'] = (inst[2], inst[30] & ~inst[2] & ~inst[1])
add sync pref as nop
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ctrl['MCtrl0_C0W'] = ~inst[31] & inst[30] & ~inst[29] & inst[23] & ~inst[3]
try add trap
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ctrl['MCtrl0_RS0'] = (~inst[30] & (~inst[4] | inst[5] | inst[29] | inst[26]), inst[30], ~inst[29] & (~inst[1] | inst[30]))
RW & RS0 fix tools update
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add control signals
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ctrl['MCtrl1_MR'] = inst[31] & ~inst[30]
ctrl['MCtrl1_MWR'] = inst[29]
ctrl['MCtrl1_MX'] = ~inst[28]
1. add cache (D-Cache Address) inst 2. fix bug in ALR 3. fix bug in MMU and DCache 4. Register File rst
2021-09-02 19:20:19 +08:00
ctrl['MCtrl1_ALR'] = (inst[28] & inst[27] & ~inst[26], ~inst[28] & inst[27] & ~inst[26])
add control signals
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ctrl['MCtrl1_TLBR'] = ~inst[31] & inst[30] & ~inst[29] & inst[25] & ~inst[3] & ~inst[1]
ctrl['MCtrl1_TLBWI'] = ~inst[31] & inst[30] & ~inst[29] & inst[25] & ~inst[3] & inst[1]
ctrl['MCtrl1_TLBWR'] = ~inst[31] & inst[30] & ~inst[29] & inst[25] & ~inst[3] & (inst[2] | ~inst[1])
ctrl['MCtrl1_TLBP'] = ~inst[31] & inst[30] & ~inst[4] & inst[3]
ctrl['MCtrl1_CACHE_OP'] = (inst[29] & inst[28] & inst[26] & inst[16], inst[29] & inst[28] & inst[26] & ~inst[20], inst[29] & inst[28] & inst[26] & ~inst[18] & (inst[20] | inst[19] | ~inst[16]))
RW & RS0 fix tools update
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try add trap
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ctrl['Trap_TEN'] = ~inst[30] & ~inst[27] & (~inst[26] & ~inst[31] & ~inst[29] & ~inst[28] & inst[4] & inst[5] | inst[26] & ~inst[31] & ~inst[29] & ~inst[28] & inst[19]) | inst[30] & ~inst[29] & ~inst[31]
ctrl['Trap_OP'] = (~inst[26] & inst[2] | inst[26] & inst[18], ~inst[26] & inst[1] | inst[26] & inst[17])
try add MOVZ, MOVN
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ctrl['WCtrl_MOV'] = ~inst[31] & ~inst[30] & ~inst[29] & ~inst[28] & ~inst[27] & ~inst[26] & ~inst[5] & ~inst[4] & inst[3] & ~inst[2] & inst[1]
try add trap
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ctrl['WCtrl_RW'] = ~inst[30] & (~inst[26] & (~inst[27] & (~inst[31] & (~inst[28] & (~inst[4] & (~inst[3] | ~inst[2] & (inst[0] | inst[1])) | inst[4] & ~inst[5] & ~inst[3] & ~inst[0]) | inst[29]) | inst[31] & ~inst[29]) | inst[27] & (~inst[31] & inst[29] | inst[31] & ~inst[29])) | inst[26] & (~inst[29] & (~inst[27] & ~inst[28] & inst[20] | inst[27] & ~inst[28] | inst[31]) | inst[29] & ~inst[31])) | inst[30] & ~inst[31] & ~inst[3] & (~inst[29] & ~inst[25] & ~inst[23] | inst[29] & inst[1])
try add MOVZ, MOVN
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ctrl['RD'] = (~inst[29] & inst[30] | inst[29] & ~inst[30] | inst[31], inst[26])
RW & RS0 fix tools update
2021-08-18 12:16:28 +08:00
print(ctrl)
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