6 import Prelude hiding (not,and,or)
8 import Data.Bits hiding (xor)
9 import qualified Data.Map as Map
13 import Text.Parsec.String
14 import Text.Parsec.Combinator
16 import Control.Applicative hiding ((<|>))
20 instruction :: Dict -> Parser Word32
21 instruction dict = foldl1 (<|>) (fmap (\x -> try (x dict)) instructions) <* char '\n'
23 testins :: String -> IO ()
25 case (parse (instruction dict) "" (input++"\n")) of
26 Left err -> do { putStr "fail :/\n"; print err}
27 Right x -> do { printf "0x%08X\n" x }
29 dict = (0x8000,[("lolz", 0x1337), ("rofl", 0xaaaa)])
35 iLit :: Dict -> Parser Word32
39 string "@hi"; parseMySpaces;
40 return $ shiftR val 16
42 string "@lo"; parseMySpaces;
43 return $ val .&. 0xffff
44 } <|> do {parseMySpaces; return val}
47 iLit5 d = do i <- iLit d; return $ i .&. 0x001f
48 iLit12 d = do i <- iLit d; return $ i .&. 0x0fff
49 iLit15 d = do i <- iLit d; return $ i .&. 0xefff
50 iLit16 d = do i <- iLit d; return $ i .&. 0xffff
54 try (do a <- digit; b <- digit; return $ [a,b]) <|> (do a <- digit; return $ [a])
56 read4imm :: String -> Word32
57 read4imm s = if erg > 15 then error "invalid register" else erg
61 reg = do {parseMySpaces; string "r"; ret <- liftM read4imm (imm4); parseMySpaces; return ret}
63 condition :: Parser Word32
65 str <- foldl1 (<|>) (fmap (try . string . fst) conds)
66 let (Just ret) = lookup str conds
69 carry :: Parser Word32
70 carry = do { char 'c'; return 1} <|> do {string ""; return 0}
72 updateDisable :: Parser Word32
73 updateDisable = do { char 'd'; return 1} <|> do {string ""; return 0}
75 highlow :: Parser Word32
76 highlow = do { char 'h'; return 1} <|> do {char 'l'; return 0} <|> do {string ""; return 0}
79 fill = do { char 'f'; return 1} <|> do {string ""; return 0}
82 sign = do { char 's'; return 1} <|> do {string ""; return 0}
84 branchpred :: Parser Word32
86 x <- do { char '+'; return 1} <|> do {char '-'; return 0} <|> do {string ""; return 0}
90 shiftArith :: Parser Word32
91 shiftArith = do { char 'a'; return 1} <|> do {string ""; return 0}
93 parseBracketClose :: Parser Char
94 parseBracketClose = do { c <- char ')'; parseMySpaces; return c}
96 (<.>) p n = p<*comma<*>n
97 (<%>) p n = p<*space<*>n
98 (<@>) p n = p<*char '('<*>n<*parseBracketClose
103 ins m form e = do {mnem m; form e}
104 csv0i_p dict f = f<$>condition<*>branchpred<*>(iLit dict)
105 csv0i_p' f = f<$>condition<*>branchpred
106 csv1 f = f<$>condition<%>reg
107 csv1_p f = f<$>condition<%>reg
108 csv2 f = f<$>condition<%>reg<.>reg
109 csv2i dict f = f<$>condition<%>reg<.>(iLit16 dict)
110 csv2_scd f = f<$>sign<*>carry<*>updateDisable<*>condition<%>reg<.>reg
111 csv2m dict f = f<$>condition<%>reg<.>(iLit15 dict)<@>reg
112 csv2i_cd dict f = f<$>carry<*>updateDisable<*>condition<%>reg<.>reg<.>(iLit5 dict)
113 csv2i_d dict f = f<$>updateDisable<*>condition<%>reg<.>reg<.>(iLit5 dict)
114 csv2i_scd dict f = f<$>sign<*>carry<*>updateDisable<*>condition<%>reg<.>reg<.>(iLit12 dict)
115 csv2i_sl dict f = f<$>sign<*>highlow<*>condition<%>reg<.>(iLit16 dict)
116 csv2i_lfd dict f = f<$>highlow<*>fill<*>updateDisable<*>condition<%>reg<.>(iLit16 dict)
117 csv3_cd f = f<$>carry<*>updateDisable<*>condition<%>reg<.>reg<.>reg
118 csv3_d f = f<$>updateDisable<*>condition<%>reg<.>reg<.>reg
120 instructions = [add, addi, mov, sub, subi,
121 and, andx, or, orx, xor, xorx, not,
123 pop, push, disc, fetch,
124 movpf, movsf, movpt, movst,
134 add _ = ins "add" csv3_cd $ aform 0x00
135 addi dict = ins "addi" (csv2i_scd dict) $ aformi 0x02
136 mov _ = ins "mov" csv2_scd $ aformi' 0x02
137 sub _ = ins "sub" csv3_cd $ aform 0x01
138 subi dict = ins "subi" (csv2i_scd dict) $ aformi 0x03
140 and _ = ins "and" csv3_d $ aform 0x04 0
141 andx dict = ins "andx" (csv2i_lfd dict) $ lformi 0x05
142 or _ = ins "or" csv3_d $ aform 0x06 0
143 orx dict = ins "orx" (csv2i_lfd dict) $ lformi 0x07
144 xor _ = ins "xor" csv3_d $ aform 0x08 0
145 xorx dict = ins "xorx" (csv2i_lfd dict) $ lformi 0x09
146 not _ = ins "not" csv1 $ lformi'not 0x09
147 lls dict = ins "lls" (csv2i_cd dict) $ shiform 0x0a 0 0
148 lrs dict = ins "lrs" (csv2i_cd dict) $ shiform 0x0a 1 0
149 ars dict = ins "ars" (csv2i_d dict) $ shiform 0x0a 1 1 0
151 pop _ = ins "pop" csv1 $ sform 0x0b 0x0
152 disc _ = ins "disc" csv1 $ sform 0x0b 0x1
153 fetch _ = ins "fetch" csv1 $ sform 0x0b 0x2
154 push _ = ins "push" csv1 $ sform 0x0b 0x3
155 movpf _ = ins "movpf" csv1 $ sform 0x0c 0x2
156 movsf _ = ins "movsf" csv1 $ sform 0x0c 0x0
157 movpt _ = ins "movpt" csv1 $ sform 0x0d 0x2
158 movst _ = ins "movst" csv1 $ sform 0x0d 0x0
159 ldw dict = ins "ldw" (csv2m dict) $ mformi 0x0e
160 ldh dict = ins "ldh" (csv2m dict) $ mformi 0x10
161 ldb dict = ins "ldb" (csv2m dict) $ mformi 0x12
162 ldi dict = ins "ldi" (csv2i_sl dict) $ lformi' 0x1a
163 stw dict = ins "stw" (csv2m dict) $ mformi 0x0f
164 sth dict = ins "sth" (csv2m dict) $ mformi 0x11
165 stb dict = ins "stb" (csv2m dict) $ mformi 0x13
166 ldx dict = ins "ldx" (csv2m dict) $ mformi 0x14
167 stx dict = ins "stx" (csv2m dict) $ mformi 0x15
169 -- set signed by default! in very rare cases this can be an issue.
170 br dict = ins "br" (csv0i_p dict) $ bform 0x16 0x0 1
171 call dict = ins "call" (csv0i_p dict) $ bform 0x16 0x1 1
172 ret _ = ins "ret" csv0i_p' $ bform' 0x16 0x2
173 reti _ = ins "reti" csv0i_p' $ bform' 0x16 0x3
174 brr _ = ins "brr" csv1_p $ brrform 0x17 0
175 callr _ = ins "callr" csv1_p $ brrform 0x17 1
176 cmp _ = ins "cmp" csv2 $ mformi' 0x18
177 cmpi dict = ins "cmpi" (csv2i dict) $ lformi 0x19 0 0 0
179 -- instruction formats
180 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)]
183 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)]
184 aformi' opcd s c d cond rd ra = aformi opcd s c d cond rd ra 0
186 lformi opcd hl f d cond rd imm = pack [(cond,28),(opcd,23),(rd,19),(imm,3),(hl,2),(f,1),(d,0)]
187 lformi' opcd s hl cond rd imm = lformi opcd s hl 0 cond rd imm
188 lformi'not opcd cond rd = lformi opcd 0 1 0 cond rd 0xefffffff
190 mformi opcd cond rd disp ra = pack [(cond,28),(opcd,23),(rd,19),(ra,15),(disp,0)]
191 mformi' opcd cond rd = mformi opcd cond rd 0
193 bform opcd typ s cond bp imm = pack [(cond,28),(opcd,23),(imm,7),(free,4),(typ,2),(bp,1),(s,0)]
195 bform' opcd typ cond bp = bform opcd typ 0 cond bp 0
197 sform opcd typ rd cond = pack [(cond,28),(opcd,23),(rd,19),(typ,17)]
199 brrform opcd typ cond ra = pack [(cond,28),(opcd,23),(ra,19),(typ,2)]
201 shiform opcd lr a c d cond rd ra imm = pack [(cond,28),(opcd,23),(rd,19),(ra,15),(imm,10),(lr,3),(a,2),(c,1),(d,0)]
203 -- ppc64 stuff (TODO: remove)
204 iform opcd aa lk li = pack [(opcd,6),(li,30),(aa,31),(lk,0)]
205 scform opcd lev = pack [(opcd,6),(lev,27),(1,31)]
206 dform'b opcd bf l ra si = pack [(opcd,6),(bf,9),(0,10),(l,11),(ra,16),(si,0)]
207 dsform opcd rt ra ds xo = pack [(opcd,6),(rt,11),(ra,16),(ds,30),(xo,0)]
208 xform'a opcd rt ra rb xo = pack [(opcd,6),(rt,11),(ra,16),(rb,21),(xo,31)]
209 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)]
210 xform'c opcd xo rs ra rb rc = pack [(opcd,6),(rs,11),(ra,16),(rb,21),(xo,31),(rc,0)]
211 xform'd opcd xo rc rs ra = pack [(opcd,6),(rs,11),(ra,16),(0,21),(xo,31),(rc,0)]
212 xlform'a opcd xo bt ba bb = pack [(opcd,6),(bt,11),(ba,16),(bb,21),(xo,31)]
213 xlform'b opcd xo lk bo bi bh = pack [(opcd,6),(bo,11),(bi,16),(bh,21),(xo,31),(lk,0)]
214 xlform'c opcd xo bf bfa = pack [(opcd,6),(bf,9),(bfa,14),(xo,31)]
215 xfxform opcd xo rs spr = pack [(opcd,6),(rs,11),(spr,21),(xo,31)]
216 xfxform'b opcd h xo fxm rs = pack [(opcd,6),(rs,11),(h,12),(fxm,20),(xo,31)]
219 xsform opcd xo rc ra rs sh = pack [(opcd,6),(rs,11),(ra,16),(sh,21),(xo,30),(sh,31),(rc,0)]
220 xoform' opcd xo oe rc rt ra = pack [(opcd,6),(rt,11),(ra,16),(0,21),(oe,22),(xo,31),(rc,0)]
222 mform opcd rc ra rs sh mb me = pack [(opcd,6),(rs,11),(ra,16),(sh,21),(mb,26),(me,31),(rc,0)]
223 -- mdform needs to be fixed to handle sh correctly
224 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)]
225 mdsform opcd h rc ra rs rb mb = pack [(opcd,6),(rs,11),(ra,16),(rb,21),(mb,27),(h,31),(rc,0)]
228 pack bf = foldr1 (.|.) $ map (uncurry rotateL) bf
231 conds :: [(String,Word32)]
233 ("nq", 0x0), ("nz", 0x0),
234 ("eq", 0x1), ("zs", 0x1),
237 ("nc", 0x4), ("ae", 0x4),
238 ("cs", 0x5), ("bl", 0x5),
239 ("ns", 0x6), ("nn", 0x6),
240 ("ss", 0x7), ("ns", 0x7),