5 import Prelude hiding (and,or)
7 import Data.Bits hiding (xor)
8 import qualified Data.Map as Map
12 import Text.Parsec.String
13 import Text.Parsec.Combinator
15 import Control.Applicative hiding ((<|>))
19 instruction :: [DictLabel] -> Parser Word32
20 instruction dict = foldl1 (<|>) (fmap (\x -> try (x dict)) instructions) <* char '\n'
22 testins :: String -> IO ()
24 case (parse (instruction dict) "" (input++"\n")) of
25 Left err -> do { putStr "fail :/\n"; print err}
26 Right x -> do { printf "0x%08X\n" x }
28 dict = [("lolz", 0x1337), ("rofl", 0xaaaa)]
34 iLabel :: [DictLabel] -> Parser Word32
36 s <- foldl1 (<|>) (fmap (try . string . fst) dict)
37 let (Just ret) = get_label s dict
41 iLit = do { parseMySpaces; ret <- liftM read (many1 digit); parseMySpaces; return ret}
50 try (do a <- digit; b <- digit; return $ [a,b]) <|> (do a <- digit; return $ [a])
52 read4imm :: String -> Word32
53 read4imm s = if erg > 15 then error "invalid register" else erg
57 reg = do {parseMySpaces; string "r"; ret <- liftM read4imm (imm4); parseMySpaces; return ret}
59 condition :: Parser Word32
61 str <- foldl1 (<|>) (fmap (try . string . fst) conds)
62 let (Just ret) = lookup str conds
65 carry :: Parser Word32
66 carry = do { char 'c'; return 1} <|> do {string ""; return 0}
68 updateDisable :: Parser Word32
69 updateDisable = do { char 'd'; return 1} <|> do {string ""; return 0}
71 highlow :: Parser Word32
72 highlow = do { char 'h'; return 1} <|> do {char 'l'; return 0} <|> do {string ""; return 0}
75 fill = do { char 'f'; return 1} <|> do {string ""; return 0}
78 sign = do { char 's'; return 1} <|> do {string ""; return 0}
80 branchpred :: Parser Word32
82 x <- do { char '+'; return 1} <|> do {char '-'; return 0} <|> do {string ""; return 0}
86 shiftArith :: Parser Word32
87 shiftArith = do { char 'a'; return 1} <|> do {string ""; return 0}
89 (<.>) p n = p<*comma<*>n
90 (<%>) p n = p<*space<*>n
91 (<@>) p n = p<*char '('<*>n<*char ')'
96 ins m form e = do {mnem m; form e}
97 csv0i_sp dict f = f<$>sign<*>condition<*>branchpred<*>(iLabel dict)
98 csv0i_sp' f = f<$>sign<*>condition<*>branchpred
99 csv2_scd f = f<$>sign<*>carry<*>updateDisable<*>condition<%>reg<.>reg
100 csv2m f = f<$>condition<%>reg<.>iLit15<@>reg
101 csv2i_scd f = f<$>sign<*>carry<*>updateDisable<*>condition<%>reg<.>reg<.>iLit12
102 csv2i_sl f = f<$>sign<*>highlow<*>condition<%>reg<.>iLit16
103 csv2i_lfd f = f<$>highlow<*>fill<*>updateDisable<*>condition<%>reg<.>iLit16
104 csv3_cd f = f<$>carry<*>updateDisable<*>condition<%>reg<.>reg<.>reg
105 csv3_d f = f<$>updateDisable<*>condition<%>reg<.>reg<.>reg
107 -- ppc64 stuff (TODO: remove)
109 csv4 f = f<$>iLit<.>iLit<.>iLit<.>iLit
110 csv5 f = f<$>iLit<.>iLit<.>iLit<.>iLit<.>iLit
113 instructions = [add, addi, mov, sub, subi,
115 --, or, orx, xor, xorx,not]
116 -- pop, push, disc, fetch
117 -- movpf, movsf, movpt, movst
129 add _ = ins "add" csv3_cd $ aform 0x00
130 addi _ = ins "addi" csv2i_scd $ aformi 0x02
131 mov _ = ins "mov" csv2_scd $ aformi' 0x02
132 sub _ = ins "sub" csv3_cd $ aform 0x01
133 subi _ = ins "subi" csv2i_scd $ aformi 0x03
135 and _ = ins "and" csv3_d $ aform 0x04 0
136 andx _ = ins "andx" csv2i_lfd $ lformi 0x05
138 ldw _ = ins "ldw" csv2m $ mformi 0x0e
139 ldi _ = ins "ldi" csv2i_sl $ lformi' 0x1a
141 br dict = ins "br" (csv0i_sp dict) $ bform 0x16 0x0
142 ret _ = ins "ret" csv0i_sp' $ bform' 0x16 0x2
144 -- instruction formats
145 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)]
148 aformi opcd s c d cond rd ra imm = pack [(cond,28),(opcd,23),(rd,19),(ra,15),(imm,3),(s,2),(c,1),(d,0)]
149 aformi' opcd s c d cond rd ra = aformi opcd s c d cond rd ra 0
151 lformi opcd hl f d cond rd imm = pack [(cond,28),(opcd,23),(rd,19),(imm,3),(hl,2),(f,1),(d,0)]
152 lformi' opcd s hl cond rd imm = lformi opcd s hl 0 cond rd imm
154 mformi opcd cond rd disp ra = pack [(cond,28),(opcd,23),(rd,19),(ra,15),(disp,0)]
156 bform opcd typ s cond bp imm = pack [(cond,28),(opcd,23),(imm,7),(free,4),(typ,2),(bp,1),(s,0)]
158 bform' opcd typ s cond bp = bform opcd typ s cond bp 0
160 -- ppc64 stuff (TODO: remove)
161 iform opcd aa lk li = pack [(opcd,6),(li,30),(aa,31),(lk,0)]
162 scform opcd lev = pack [(opcd,6),(lev,27),(1,31)]
163 dform'b opcd bf l ra si = pack [(opcd,6),(bf,9),(0,10),(l,11),(ra,16),(si,0)]
164 dsform opcd rt ra ds xo = pack [(opcd,6),(rt,11),(ra,16),(ds,30),(xo,0)]
165 xform'a opcd rt ra rb xo = pack [(opcd,6),(rt,11),(ra,16),(rb,21),(xo,31)]
166 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)]
167 xform'c opcd xo rs ra rb rc = pack [(opcd,6),(rs,11),(ra,16),(rb,21),(xo,31),(rc,0)]
168 xform'd opcd xo rc rs ra = pack [(opcd,6),(rs,11),(ra,16),(0,21),(xo,31),(rc,0)]
169 xlform'a opcd xo bt ba bb = pack [(opcd,6),(bt,11),(ba,16),(bb,21),(xo,31)]
170 xlform'b opcd xo lk bo bi bh = pack [(opcd,6),(bo,11),(bi,16),(bh,21),(xo,31),(lk,0)]
171 xlform'c opcd xo bf bfa = pack [(opcd,6),(bf,9),(bfa,14),(xo,31)]
172 xfxform opcd xo rs spr = pack [(opcd,6),(rs,11),(spr,21),(xo,31)]
173 xfxform'b opcd h xo fxm rs = pack [(opcd,6),(rs,11),(h,12),(fxm,20),(xo,31)]
176 xsform opcd xo rc ra rs sh = pack [(opcd,6),(rs,11),(ra,16),(sh,21),(xo,30),(sh,31),(rc,0)]
177 xoform' opcd xo oe rc rt ra = pack [(opcd,6),(rt,11),(ra,16),(0,21),(oe,22),(xo,31),(rc,0)]
179 mform opcd rc ra rs sh mb me = pack [(opcd,6),(rs,11),(ra,16),(sh,21),(mb,26),(me,31),(rc,0)]
180 -- mdform needs to be fixed to handle sh correctly
181 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)]
182 mdsform opcd h rc ra rs rb mb = pack [(opcd,6),(rs,11),(ra,16),(rb,21),(mb,27),(h,31),(rc,0)]
185 pack bf = foldr1 (.|.) $ map (uncurry rotateL) bf
188 conds :: [(String,Word32)]
190 ("nq", 0x0), ("nz", 0x0),
191 ("eq", 0x1), ("zs", 0x1),
194 ("nc", 0x4), ("ae", 0x4),
195 ("cs", 0x5), ("bl", 0x5),
196 ("ns", 0x6), ("nn", 0x6),
197 ("ss", 0x7), ("ns", 0x7),