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local function rd(self, addr)
self.fin:seek(addr * 4)
return self.fin:readU32()
end
local function rdn(self)
local r = self:rd(self.PC)
self.PC = self.PC + 1
return r
end
local opcodes_names = {
-- 0x.0 0x.1 0x.2 0x.3 0x.4 0x.5 0x.6 0x.7 0x.8 0x.9 0x.a 0x.b 0x.c 0x.d 0x.e 0x.f
"SETV", "SETV", nil, nil, nil, nil, nil, nil, "MULG0","ADDG0","PSH", nil, nil, "PSH1?",nil, -- 0x0.
nil, nil, "PSH2?","PSHI", "CALL", "JMP", "JMPZ", "RET", "SETD", "PSH3?",nil, nil, nil, nil, nil, nil, -- 0x1.
nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, -- 0x2.
nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, -- 0x3.
nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, -- 0x4.
nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, -- 0x5.
nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, -- 0x6.
nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, -- 0x7.
"STTRG",nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, "SSTOP",nil, nil, nil, -- 0x8.
nil, nil, "TBOX", "TBOX2",nil, nil, nil, nil, "TBOX3",nil, nil, nil, nil, nil, "SETRM","CHGRM",-- 0x9.
nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, -- 0xa.
nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, -- 0xb.
nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, -- 0xc.
nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, -- 0xd.
nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, -- 0xe.
nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, -- 0xf.
}
local opcodes_imms = {
-- 0 1 2 3 4 5 6 7 8 9 a b c d e f
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- 0
0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, -- 1
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, -- 2
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, -- 3
0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- 4
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- 5
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- 6
0, 2, 1, 2, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- 7
3, 0, 1, 2, 0, 4, 1, 1, 1, 0, 2, 0, 1, 0, 0, 2, -- 8
0, 0, 3, 3, 3, 0, 0, 0, 3, 0, 0, 0, 0, 1, 1, 2, -- 9
2, 2, 1, 2, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, -- a
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, -- b
2, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, -- c
0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, -- d
0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, -- e
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- f
}
-- 0 = nothing
-- 1 = low8
-- 2 = low16
-- 3 = low23
-- 4 = high8
-- 5 = var_idx
-- 6 = var_idx2
-- 7 = low8 + high8
local opcodes_self_vals = {
-- 0 1 2 3 4 5 6 7 8 9 a b c d e f
5, 5, 0, 0, 0, 0, 0, 0, 3, 3, 5, 0, 0, 2, 0, -- 0
0, 0, 3, 0, 3, 3, 3, 0, 6, 0, 0, 0, 0, 0, 0, 0, -- 1
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- 2
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- 3
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- 4
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- 5
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- 6
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- 7
2, 2, 2, 0, 0, 2, 2, 0, 2, 0, 0, 0, 0, 2, 1, 0, -- 8
0, 0, 2, 2, 2, 0, 0, 0, 2, 0, 0, 0, 0, 7, 2, 0, -- 9
0, 2, 0, 0, 0, 0, 0, 0, 2, 0, 0, 2, 0, 0, 0, 0, -- a
0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, -- b
0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- c
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- d
0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- e
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- f
}
local opcodes_nparams = {
-- 0 1 2 3 4 5 6 7 8 9 a b c d e f
2, 2, 0, 0, 0, 0, 0, 0, 2, 2, 1, 0, 0, 1, 0, -- 0
0, 0, 1, 1, 1, 1, 2, 0, 2, 1, 1, 0, 0, 0, 0, 0, -- 1
0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, -- 2
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, -- 3
0, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- 4
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- 5
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- 6
0, 0, 1, 3, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, -- 7
4, 1, 2, 4, 0, 5, 2, 2, 2, 0, 3, 0, 1, 1, 1, 5, -- 8
0, 0, 7, 7, 6, 0, 0, 0, 7, 0, 0, 0, 0, 3, 2, 4, -- 9
6, 2, 2, 6, 0, 0, 0, 0, 2, 1, 0, 1, 0, 0, 0, 0, -- a
0, 0, 2, 0, 0, 0, 0, 0, 1, 0, 0, 2, 0, 0, 0, 0, -- b
2, 0, 3, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, -- c
0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 1, 0, 0, 1, 0, 0, -- d
1, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 1, 0, 0, 0, 0, -- e
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -- f
}
local opcodes_known = {
-- 0 1 2 3 4 5 6 7 8 9 a b c d e f
true, true, false, false, false, false, false, false, true, true, true, false, false, true, false, -- 0
false, false, true, true, true, true, true, true, true, true, true, false, false, false, false, false, -- 1
false, true, true, true, true, true, true, true, true, true, true, false, false, false, true, false, -- 2
false, false, false, false, false, false, false, false, false, false, false, false, false, true, false, true, -- 3
false, true, true, true, true, true, false, false, false, true, false, false, false, false, false, false, -- 4
false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, -- 5
false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, -- 6
true, true, true, true, true, true, true, false, true, false, false, true, true, false, true, false, -- 7
true, true, true, true, false, true, true, true, true, true, true, false, true, true, true, true, -- 8
false, true, true, true, true, false, false, false, true, false, false, false, false, true, true, true, -- 9
true, true, true, true, false, false, false, false, true, true, false, true, false, false, false, false, -- a
true, false, true, false, false, false, false, false, true, false, false, true, false, false, true, false, -- b
true, false, true, false, false, false, false, false, false, true, false, false, false, false, false, false, -- c
false, false, false, false, false, false, false, false, false, true, true, false, false, true, true, false, -- d
true, false, false, false, false, false, true, false, false, false, false, true, false, false, false, false, -- e
false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, -- f
}
local opcodes_fromstack = {
-- 0 1 2 3 4 5 6 7 8 9 a b c d e f
false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, -- 0
false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, -- 1
false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, -- 2
false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, -- 3
false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, -- 4
false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, -- 5
false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, -- 6
false, true, true, true, false, true, false, false, false, false, false, false, false, false, false, false, -- 7
true, true, true, true, false, true, true, true, true, false, true, false, true, false, true, true, -- 8
false, false, true, true, true, false, false, false, true, false, false, false, false, true, true, true, -- 9
true, true, true, true, false, false, false, false, true, true, false, true, false, false, false, false, -- a
false, false, true, false, false, false, false, false, false, false, false, true, false, false, false, false, -- b
true, false, true, false, false, false, false, false, false, true, false, false, false, false, false, false, -- c
false, false, false, false, false, false, false, false, false, true, true, false, false, true, false, false, -- d
false, false, false, false, false, false, true, false, false, false, false, true, false, false, false, false, -- e
false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, -- f
}
local function disasm_opcode(self)
self.oPC = self.PC
self.opcode = self:rdn()
self.code = shr(self.opcode, 24)
self.imm8 = andB(self.opcode, 0xff)
self.imm16 = andB(self.opcode, 0xffff)
self.imm23 = andB(self.opcode, 0x7fffff)
self.high8 = andB(shr(self.opcode, 8), 0xff)
self.idx2 = shr(shl(self.opcode, 9), 12)
self.flags = {}
self.flags.is_local = andB(self.opcode, 0x800000) ~= 0
self.flags.from_stack = andB(self.opcode, 0x100000) ~= 0
self.out:write(string.format("%08X %08X ", self.oPC, self.opcode))
if self.code == 0 then
self.out:write("OPCODE00?!")
return
end
local name = opcodes_names[self.code]
if name then
self.out:write(string.format("%-8s", name))
elseif opcodes_known[self.code] then
self.out:write(string.format("OP_%02X ", self.code))
else
self.out:write(string.format("UNK%02X ", self.code))
end
if self.flags.from_stack and opcodes_fromstack[self.code] then
for i = 1, opcodes_nparams[self.code] do
self.out:write("POP()")
if i ~= opcodes_nparams[self.code] then self.out:write(", ") end
end
else
local nargs = opcodes_nparams[self.code]
local sv = opcodes_self_vals[self.code]
if false then
-- 0 = nothing
-- 1 = low8
-- 2 = low16
-- 3 = low23
-- 4 = high8
-- 5 = var_idx
-- 6 = var_idx2
-- 7 = low8 + high8
elseif sv == 1 then
self.out:write(string.format("%02X", self.imm8))
nargs = nargs - 1
elseif sv == 2 then
self.out:write(string.format("%04X", self.imm16))
nargs = nargs - 1
elseif sv == 3 then
self.out:write(string.format("%08X", self.imm23))
nargs = nargs - 1
elseif sv == 4 then
self.out:write(string.format("%02X", self.high8))
nargs = nargs - 1
elseif sv == 5 then
self.out:write(string.format("%s[%04X]", self.flags.is_local and "locl" or "glbl", self.imm16))
nargs = nargs - 1
elseif sv == 6 then
self.out:write(string.format("%s[%04X]", self.flags.is_local and "locl" or "glbl", self.idx2))
nargs = nargs - 1
elseif sv == 7 then
self.out:write(string.format("%02X, %02X", self.imm8, self.high8))
nargs = nargs - 2
end
if sv ~= 0 and nargs ~= 0 then
self.out:write(", ")
end
for i = 1, opcodes_imms[self.code] do
self.out:write(string.format("%08X", self:rdn()))
if i ~= opcodes_imms[self.code] then self.out:write(", ") end
nargs = nargs - 1
end
if not opcodes_fromstack[self.code] then
for i = 1, nargs do
self.out:write("POP()")
if i ~= nargs then self.out:write(", ") end
end
end
end
if self.hooks[self.code] then self.hooks[self.code](self.oPC) end
end
local function disasm(self)
while self.PC ~= self.EPC do
self:disasm_opcode()
self.out:write("\n")
for padPC = self.oPC + 1, self.PC - 1 do
self.out:write(string.format(" %08X\n", self:rd(padPC)))
end
end
end
function logic_disasm(logic, o, hooks)
local dobj = { rd = rd, rdn = rdn, disasm_opcode = disasm_opcode, disasm = disasm, PC = 0, fin = logic, out = o, EPC = logic:getsize() / 4, hooks = hooks }
dobj:disasm()
end
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