3 import Prelude hiding (and,or)
5 import Data.Bits hiding (xor)
6 import qualified Data.Map as Map
10 import Text.Parsec.String
11 import Text.Parsec.Combinator
13 import Control.Applicative hiding ((<|>))
15 parseInstructions = many1 instruction
17 testins :: String -> IO ()
19 case (parse instruction "" (input++"\n")) of
20 Left err -> do { putStr "fail :/"; print err}
21 Right x -> do { printf "0x%08X\n" x }
24 instruction :: Parser Word32
25 instruction = foldl1 (<|>) (fmap try instructions) <* char '\n'
33 iLit = liftM read (many1 digit)
37 try (do a <- digit; b <- digit; return $ [a,b]) <|> (do a <- digit; return $ [a])
39 read4imm :: String -> Word32
40 read4imm s = if erg > 15 then error "invalid register" else erg
44 reg = do {string "r"; liftM read4imm (imm4)}
46 condition :: Parser Word32
48 str <- foldl1 (<|>) (fmap (try . string . fst) conds)
49 let (Just ret) = lookup str conds
52 carry :: Parser Word32
53 carry = do { char 'c'; return 1} <|> do {string ""; return 0}
55 updateDisable :: Parser Word32
56 updateDisable = do { char 'd'; return 1} <|> do {string ""; return 0}
58 highlow :: Parser Word32
59 highlow = do { char 'h'; return 1} <|> do {char 'l'; return 0} <|> do {string ""; return 0}
62 fill = do { char 'f'; return 1} <|> do {string ""; return 0}
65 sign = do { char 's'; return 1} <|> do {string ""; return 0}
67 branchpred :: Parser Word32
68 branchpred = do { char '+'; return 1} <|> do {char '-'; return 0} <|> do {string ""; return 0}
70 shiftArith :: Parser Word32
71 shiftArith = do { char 'a'; return 1} <|> do {string ""; return 0}
73 (<.>) p n = p<*comma<*>n
74 (<%>) p n = p<*space<*>n
75 (<@>) p n = p<*char '('<*>n<*char ')'
81 addi = ins "addi" csv3 $ aform
82 dform'a opcd rt ra d = pack [(opcd,6),(rt,11),(ra,16),(d,0)]
85 add = ins "add" csv3 $ aform 0
89 ins m form e = mnem m>>form e
91 csv2 f =f<$>iLit<.>iLit
92 csv3 f = f<$>carry<*>updateDisable<*>condition<%>reg<.>reg<.>reg
93 csv4 f = f<$>iLit<.>iLit<.>iLit<.>iLit
94 csv5 f = f<$>iLit<.>iLit<.>iLit<.>iLit<.>iLit
96 -- instruction formats
97 aform :: Word32 -> Word32 -> Word32 -> Word32 -> Word32 -> Word32 -> Word32 -> Word32
98 aform opcd c d cond rd ra rb = pack [(cond,28),(opcd,23),(rd,19),(ra,15),(rb,11),(free,2),(c,1),(d,0)]
102 iform opcd aa lk li = pack [(opcd,6),(li,30),(aa,31),(lk,0)]
103 bform opcd aa lk bo bi bd = pack [(opcd,6),(bo,11),(bi,16),(bd,30),(aa,31),(lk,0)]
104 scform opcd lev = pack [(opcd,6),(lev,27),(1,31)]
105 dform'b opcd bf l ra si = pack [(opcd,6),(bf,9),(0,10),(l,11),(ra,16),(si,0)]
106 dsform opcd rt ra ds xo = pack [(opcd,6),(rt,11),(ra,16),(ds,30),(xo,0)]
107 xform'a opcd rt ra rb xo = pack [(opcd,6),(rt,11),(ra,16),(rb,21),(xo,31)]
108 xform'b opcd xo bf l ra rb = pack [(opcd,6),(bf,9),(0,10),(l,11),(ra,16),(rb,21),(xo,31),(0,0)]
109 xform'c opcd xo rs ra rb rc = pack [(opcd,6),(rs,11),(ra,16),(rb,21),(xo,31),(rc,0)]
110 xform'd opcd xo rc rs ra = pack [(opcd,6),(rs,11),(ra,16),(0,21),(xo,31),(rc,0)]
111 xlform'a opcd xo bt ba bb = pack [(opcd,6),(bt,11),(ba,16),(bb,21),(xo,31)]
112 xlform'b opcd xo lk bo bi bh = pack [(opcd,6),(bo,11),(bi,16),(bh,21),(xo,31),(lk,0)]
113 xlform'c opcd xo bf bfa = pack [(opcd,6),(bf,9),(bfa,14),(xo,31)]
114 xfxform opcd xo rs spr = pack [(opcd,6),(rs,11),(spr,21),(xo,31)]
115 xfxform'b opcd h xo fxm rs = pack [(opcd,6),(rs,11),(h,12),(fxm,20),(xo,31)]
118 xsform opcd xo rc ra rs sh = pack [(opcd,6),(rs,11),(ra,16),(sh,21),(xo,30),(sh,31),(rc,0)]
119 xoform' opcd xo oe rc rt ra = pack [(opcd,6),(rt,11),(ra,16),(0,21),(oe,22),(xo,31),(rc,0)]
121 mform opcd rc ra rs sh mb me = pack [(opcd,6),(rs,11),(ra,16),(sh,21),(mb,26),(me,31),(rc,0)]
122 -- mdform needs to be fixed to handle sh correctly
123 mdform opcd h rc ra rs sh mb = pack [(opcd,6),(rs,11),(ra,16),(sh,21),(mb,27),(h,30),(sh,31),(rc,0)]
124 mdsform opcd h rc ra rs rb mb = pack [(opcd,6),(rs,11),(ra,16),(rb,21),(mb,27),(h,31),(rc,0)]
127 pack bf = foldr1 (.|.) $ map (uncurry rotateL) bf
130 conds :: [(String,Word32)]
132 ("nq", 0x0), ("nz", 0x0),
133 ("eq", 0x1), ("zs", 0x1),
136 ("nc", 0x4), ("ae", 0x4),
137 ("cs", 0x5), ("bl", 0x5),
138 ("ns", 0x6), ("nn", 0x6),
139 ("ss", 0x7), ("ns", 0x7),