@@ -7,7 +7,7 @@ Maintainer : The Idris Community.
77-}
88module IRTS.CodegenC (codegenC) where
99
10−import Idris.AbsSyntax
10+import Idris.AbsSyntax hiding (getBC)
1111import Idris.Core.TT
1212import IRTS.Bytecode
1313import IRTS.CodegenCommon
@@ -21,14 +21,19 @@ import Util.System
2121import Control.Monad
2222import Data.Bits
2323import Data.Char
24−import Data.List (intercalate, nubBy)
25−import Debug.Trace
2624import Numeric
27−import System.Directory
25+import Data.List (find, intercalate, nubBy, partition)
26+import qualified Data.Text as T
2827import System.Exit
2928import System.FilePath ((<.>), (</>))
3029import System.IO
3130import System.Process
31+import System.Directory
32+import System.FilePath ((</>), (<.>))
33+import Control.Monad
34+import Control.Monad.RWS
35+
36+import Debug.Trace
3237
3338codegenC :: CodeGenerator
3439codegenC ci = do codegenC' (simpleDecls ci)
@@ -64,7 +69,9 @@ codegenC' defs out exec incs objs libs flags exports iface dbg
6469 let bc = map toBC defs
6570 let wrappers = genWrappers bc
6671 let h = concatMap toDecl (map fst bc)
67− let cc = concatMap (uncurry toC) bc
72+ let (state, cc) = execRWS (generateSrc bc) 0
73+ (CS { fnName = Nothing,
74+ level = 1 })
6875 let hi = concatMap ifaceC (concatMap getExp exports)
6976 d <- getIdrisCRTSDir
7077 mprog <- readFile (d </> "idris_main" <.> "c")
@@ -134,12 +141,17 @@ creg Tmp = "REG1"
134141toDecl :: Name -> String
135142toDecl f = "void " ++ cname f ++ "(VM*, VAL*);\n"
136143
137−toC :: Name -> [BC] -> String
138−toC f code
139− = -- "/* " ++ show code ++ "*/\n\n" ++
140− "void " ++ cname f ++ "(VM* vm, VAL* oldbase) {\n" ++
141− indent 1 ++ "INITFRAME;\n" ++
142− concatMap (bcc 1) code ++ "}\n\n"
144+generateSrc :: [(Name, [BC])] -> RWS Int String CState ()
145+generateSrc bc = mapM_ toC bc
146+
147+toC :: (Name, [BC]) -> RWS Int String CState ()
148+toC (f, code) = do
149+ modify (\s -> s { fnName = Just f })
150+ s <- get
151+ tell $ "void " ++ cname f ++ "(VM* vm, VAL* oldbase) {\n"
152+ tell $ indent (level s) ++ "INITFRAME;\n"
153+ bcc code
154+ tell $ "}\n\n"
143155
144156showCStr :: String -> String
145157showCStr s = '"' : foldr ((++) . showChar) "\"" s
@@ -175,10 +187,22 @@ showCStr s = '"' : foldr ((++) . showChar) "\"" s
175187 2 -> s
176188 _ -> error $ "Can't happen: String of invalid length " ++ show s
177189
178−bcc :: Int -> BC -> String
179−bcc i (ASSIGN l r) = indent i ++ creg l ++ " = " ++ creg r ++ ";\n"
180−bcc i (ASSIGNCONST l c)
181− = indent i ++ creg l ++ " = " ++ mkConst c ++ ";\n"
190+data CState = CS {
191+ fnName :: Maybe Name,
192+ level :: Int
193+}
194+
195+
196+bcc :: [BC] -> RWS Int String CState ()
197+bcc [] = return ()
198+bcc ((ASSIGN l r):xs) = do
199+ i <- get
200+ tell $ indent (level i) ++ creg l ++ " = " ++ creg r ++ ";\n"
201+ bcc xs
202+bcc ((ASSIGNCONST l c):xs) = do
203+ i <- get
204+ tell $ indent (level i) ++ creg l ++ " = " ++ mkConst c ++ ";\n"
205+ bcc xs
182206 where
183207 mkConst (I i) = "MKINT(" ++ show i ++ ")"
184208 mkConst (BI i) | i < (2^30) = "MKINT(" ++ show i ++ ")"
@@ -196,16 +220,21 @@ bcc i (ASSIGNCONST l c)
196220 mkConst c | isTypeConst c = "MKINT(42424242)"
197221 mkConst c = error $ "mkConst of (" ++ show c ++ ") not implemented"
198222
199−bcc i (UPDATE l r) = indent i ++ creg l ++ " = " ++ creg r ++ ";\n"
200−bcc i (MKCON l loc tag []) | tag < 256
201− = indent i ++ creg l ++ " = NULL_CON(" ++ show tag ++ ");\n"
202−bcc i (MKCON l loc tag args)
203− = indent i ++ alloc loc tag ++
204− indent i ++ setArgs 0 args ++ "\n" ++
205− indent i ++ creg l ++ " = " ++ creg Tmp ++ ";\n"
206−
207−-- "MKCON(vm, " ++ creg l ++ ", " ++ show tag ++ ", " ++
208−-- show (length args) ++ concatMap showArg args ++ ");\n"
223+bcc ((UPDATE l r):xs) = do
224+ i <- get
225+ tell $ indent (level i) ++ creg l ++ " = " ++ creg r ++ ";\n"
226+ bcc xs
227+bcc ((MKCON l loc tag []):xs) | tag < 256 = do
228+ i <- get
229+ tell $ indent (level i) ++ creg l ++ " = NULL_CON(" ++ show tag ++ ");\n"
230+ bcc xs
231+bcc ((MKCON l loc tag args):xs) = do
232+ i <- get
233+ let tab = indent (level i)
234+ tell $ tab ++ alloc loc tag ++
235+ tab ++ setArgs 0 args ++ "\n" ++
236+ tab ++ creg l ++ " = " ++ creg Tmp ++ ";\n"
237+ bcc xs
209238 where showArg r = ", " ++ creg r
210239 setArgs i [] = ""
211240 setArgs i (x : xs) = "SETARG(" ++ creg Tmp ++ ", " ++ show i ++ ", " ++ creg x ++
@@ -217,52 +246,94 @@ bcc i (MKCON l loc tag args)
217246 = "updateCon(" ++ creg Tmp ++ ", " ++ creg old ++ ", " ++ show tag ++ ", " ++
218247 show (length args) ++ ");\n"
219248
220−bcc i (PROJECT l loc a) = indent i ++ "PROJECT(vm, " ++ creg l ++ ", " ++ show loc ++
221− ", " ++ show a ++ ");\n"
222−bcc i (PROJECTINTO r t idx)
223− = indent i ++ creg r ++ " = GETARG(" ++ creg t ++ ", " ++ show idx ++ ");\n"
224−bcc i (CASE True r code def)
225− | length code < 4 = showCase i def code
249+bcc ((PROJECT l loc a):xs) = do
250+ i <- get
251+ tell $ indent (level i) ++ "PROJECT(vm, " ++ creg l ++ ", "
252+ ++ show loc ++ ", " ++ show a ++ ");\n"
253+ bcc xs
254+bcc ((PROJECTINTO r t idx):xs) = do
255+ i <- get
256+ tell $ indent (level i) ++ creg r ++ " = GETARG(" ++ creg t
257+ ++ ", " ++ show idx ++ ");\n"
258+ bcc xs
259+bcc ((CASE True r code def):xs)
260+ | length code < 4 = do
261+ showCases def code
262+ bcc xs
226263 where
227− showCode :: Int -> [BC] -> String
228− showCode i bc = "{\n" ++ concatMap (bcc (i + 1)) bc ++
229− indent i ++ "}\n"
230−
231− showCase :: Int -> Maybe [BC] -> [(Int, [BC])] -> String
232− showCase i Nothing [(t, c)] = indent i ++ showCode i c
233− showCase i (Just def) [] = indent i ++ showCode i def
234− showCase i def ((t, c) : cs)
235− = indent i ++ "if (CTAG(" ++ creg r ++ ") == " ++ show t ++ ") " ++ showCode i c
236− ++ indent i ++ "else\n" ++ showCase i def cs
237−
238−bcc i (CASE safe r code def)
239− = indent i ++ "switch(" ++ ctag safe ++ "(" ++ creg r ++ ")) {\n" ++
240− concatMap (showCase i) code ++
241− showDef i def ++
242− indent i ++ "}\n"
264+ showCode bc = do
265+ w <- getBC bc xs
266+ i <- get
267+ tell $ "{\n" ++ w ++ indent (level i) ++ "}\n"
268+
269+ showCases Nothing [(t, c)] = do
270+ i <- get
271+ tell $ indent (level i)
272+ showCode c
273+ showCases (Just def) [] = do
274+ i <- get
275+ tell $ indent (level i)
276+ showCode def
277+ showCases def ((t, c) : cs) = do
278+ i <- get
279+ tell $ indent (level i) ++ "if (CTAG(" ++ creg r ++ ") == "
280+ ++ show t ++ ") "
281+ showCode c
282+ tell $ indent (level i) ++ "else\n"
283+ showCases def cs
284+
285+bcc ((CASE safe r code def):xs) = do
286+ i <- get
287+ tell $ indent (level i) ++ "switch(" ++ ctag safe ++ "(" ++ creg r ++ ")) {\n"
288+ mapM showCase code
289+ showDef def
290+ tell $ indent (level i) ++ "}\n"
291+ bcc xs
243292 where
244293 ctag True = "CTAG"
245294 ctag False = "TAG"
246295
247− showCase i (t, bc) = indent i ++ "case " ++ show t ++ ":\n"
248− ++ concatMap (bcc (i+1)) bc ++ indent (i + 1) ++ "break;\n"
249− showDef i Nothing = ""
250− showDef i (Just c) = indent i ++ "default:\n"
251− ++ concatMap (bcc (i+1)) c ++ indent (i + 1) ++ "break;\n"
252−bcc i (CONSTCASE r code def)
296+ showCase (t, bc) = do
297+ w <- getBC bc xs
298+ is <- get
299+ let i = level is
300+ tell $ indent i ++ "case " ++ show t ++ ":\n"
301+ ++ w ++ indent (i + 1) ++ "break;\n"
302+ showDef Nothing = return $ ()
303+ showDef (Just c) = do
304+ w <- getBC c xs
305+ is <- get
306+ let i = level is
307+ tell $ indent i ++ "default:\n" ++ w ++ indent (i + 1) ++ "break;\n"
308+
309+bcc ((CONSTCASE r code def):xs)
253310 | intConsts code
254−-- = indent i ++ "switch(GETINT(" ++ creg r ++ ")) {\n" ++
255−-- concatMap (showCase i) code ++
256−-- showDef i def ++
257−-- indent i ++ "}\n"
258− = concatMap (iCase (creg r)) code ++
259− indent i ++ "{\n" ++ showDefS i def ++ indent i ++ "}\n"
311+ = do
312+ is <- get
313+ let i = level is
314+ codes <- mapM getCode code
315+ defs <- showDefS def
316+ tell $ concatMap (iCase i (creg r)) codes
317+ tell $ indent i ++ "{\n" ++ defs ++ indent i ++ "}\n"
318+ bcc xs
260319 | strConsts code
261− = concatMap (strCase ("GETSTR(" ++ creg r ++ ")")) code ++
262− indent i ++ "{\n" ++ showDefS i def ++ indent i ++ "}\n"
320+ = do
321+ is <- get
322+ let i = level is
323+ codes <- mapM getCode code
324+ defs <- showDefS def
325+ tell $ concatMap (strCase i ("GETSTR(" ++ creg r ++ ")")) codes
326+ ++ indent i ++ "{\n" ++ defs ++ indent i ++ "}\n"
327+ bcc xs
263328 | bigintConsts code
264− = concatMap (biCase (creg r)) code ++
265− indent i ++ "{\n" ++ showDefS i def ++ indent i ++ "}\n"
329+ = do
330+ is <- get
331+ let i = level is
332+ codes <- mapM getCode code
333+ defs <- showDefS def
334+ tell $ concatMap (biCase i (creg r)) codes ++
335+ indent i ++ "{\n" ++ defs ++ indent i ++ "}\n"
336+ bcc xs
266337 | otherwise = error $ "Can't happen: Can't compile const case " ++ show code
267338 where
268339 intConsts ((I _, _ ) : _) = True
@@ -279,72 +350,119 @@ bcc i (CONSTCASE r code def)
279350 strConsts ((Str _, _ ) : _) = True
280351 strConsts _ = False
281352
282− strCase sv (s, bc) =
353+ getCode (x, code) = do
354+ c <- getBC code xs
355+ return (x, c)
356+
357+ strCase i sv (s, bc) =
283358 indent i ++ "if (strcmp(" ++ sv ++ ", " ++ show s ++ ") == 0) {\n" ++
284− concatMap (bcc (i+1)) bc ++ indent i ++ "} else\n"
285− biCase bv (BI b, bc) =
359+ bc ++ indent i ++ "} else\n"
360+ biCase i bv (BI b, bc) =
286361 indent i ++ "if (bigEqConst(" ++ bv ++ ", " ++ show b ++ ")) {\n"
287− ++ concatMap (bcc (i+1)) bc ++ indent i ++ "} else\n"
288− iCase v (I b, bc) =
362+ ++ bc ++ indent i ++ "} else\n"
363+ iCase i v (I b, bc) =
289364 indent i ++ "if (GETINT(" ++ v ++ ") == " ++ show b ++ ") {\n"
290− ++ concatMap (bcc (i+1)) bc ++ indent i ++ "} else\n"
291− iCase v (Ch b, bc) =
365+ ++ bc ++ indent i ++ "} else\n"
366+ iCase i v (Ch b, bc) =
292367 indent i ++ "if (GETINT(" ++ v ++ ") == " ++ show (fromEnum b) ++ ") {\n"
293− ++ concatMap (bcc (i+1)) bc ++ indent i ++ "} else\n"
294− iCase v (B8 w, bc) =
368+ ++ bc ++ indent i ++ "} else\n"
369+ iCase i v (B8 w, bc) =
295370 indent i ++ "if (GETBITS8(" ++ v ++ ") == " ++ show (fromEnum w) ++ ") {\n"
296− ++ concatMap (bcc (i+1)) bc ++ indent i ++ "} else\n"
297− iCase v (B16 w, bc) =
371+ ++ bc ++ indent i ++ "} else\n"
372+ iCase i v (B16 w, bc) =
298373 indent i ++ "if (GETBITS16(" ++ v ++ ") == " ++ show (fromEnum w) ++ ") {\n"
299− ++ concatMap (bcc (i+1)) bc ++ indent i ++ "} else\n"
300− iCase v (B32 w, bc) =
374+ ++ bc ++ indent i ++ "} else\n"
375+ iCase i v (B32 w, bc) =
301376 indent i ++ "if (GETBITS32(" ++ v ++ ") == " ++ show (fromEnum w) ++ ") {\n"
302− ++ concatMap (bcc (i+1)) bc ++ indent i ++ "} else\n"
303− iCase v (B64 w, bc) =
377+ ++ bc ++ indent i ++ "} else\n"
378+ iCase i v (B64 w, bc) =
304379 indent i ++ "if (GETBITS64(" ++ v ++ ") == " ++ show (fromEnum w) ++ ") {\n"
305− ++ concatMap (bcc (i+1)) bc ++ indent i ++ "} else\n"
306− showCase i (t, bc) = indent i ++ "case " ++ show t ++ ":\n"
307− ++ concatMap (bcc (i+1)) bc ++
308− indent (i + 1) ++ "break;\n"
309− showDef i Nothing = ""
310− showDef i (Just c) = indent i ++ "default:\n"
311− ++ concatMap (bcc (i+1)) c ++
312− indent (i + 1) ++ "break;\n"
313− showDefS i Nothing = ""
314− showDefS i (Just c) = concatMap (bcc (i+1)) c
315−
316−bcc i (CALL n) = indent i ++ "CALL(" ++ cname n ++ ");\n"
317−bcc i (TAILCALL n) = indent i ++ "TAILCALL(" ++ cname n ++ ");\n"
318−bcc i (SLIDE n) = indent i ++ "SLIDE(vm, " ++ show n ++ ");\n"
319−bcc i REBASE = indent i ++ "REBASE;\n"
320−bcc i (RESERVE 0) = ""
321−bcc i (RESERVE n) = indent i ++ "RESERVE(" ++ show n ++ ");\n"
322−bcc i (ADDTOP 0) = ""
323−bcc i (ADDTOP n) = indent i ++ "ADDTOP(" ++ show n ++ ");\n"
324−bcc i (TOPBASE n) = indent i ++ "TOPBASE(" ++ show n ++ ");\n"
325−bcc i (BASETOP n) = indent i ++ "BASETOP(" ++ show n ++ ");\n"
326−bcc i STOREOLD = indent i ++ "STOREOLD;\n"
327−bcc i (OP l fn args) = indent i ++ doOp (creg l ++ " = ") fn args ++ ";\n"
328−bcc i (FOREIGNCALL l rty (FStr fn@('&':name)) [])
329− = indent i ++
330− c_irts (toFType rty) (creg l ++ " = ") fn ++ ";\n"
331−bcc i (FOREIGNCALL l rty (FStr fn) (x:xs)) | fn == "%wrapper"
332− = indent i ++
333− c_irts (toFType rty) (creg l ++ " = ")
380+ ++ bc ++ indent i ++ "} else\n"
381+
382+ showDefS Nothing = return ""
383+ showDefS (Just c) = getBC c xs
384+
385+bcc (CALL n:xs) = do
386+ i <- get
387+ tell $ indent (level i) ++ "CALL(" ++ cname n ++ ");\n"
388+ bcc xs
389+bcc (TAILCALL n:xs) = do
390+ i <- get
391+ tell $ indent (level i) ++ "TAILCALL(" ++ cname n ++ ");\n"
392+ bcc xs
393+bcc ((SLIDE n):xs) = do
394+ i <- get
395+ tell $ indent (level i) ++ "SLIDE(vm, " ++ show n ++ ");\n"
396+ bcc xs
397+bcc (REBASE:xs) = do
398+ i <- get
399+ tell $ indent (level i)++ "REBASE;\n"
400+ bcc xs
401+bcc ((RESERVE 0):xs) = bcc xs
402+bcc ((RESERVE n):xs) = do
403+ i <- get
404+ tell $ indent (level i) ++ "RESERVE(" ++ show n ++ ");\n"
405+ bcc xs
406+bcc ((ADDTOP 0):xs) = bcc xs
407+bcc ((ADDTOP n):xs) = do
408+ i <- get
409+ tell $ indent (level i) ++ "ADDTOP(" ++ show n ++ ");\n"
410+ bcc xs
411+bcc ((TOPBASE n):xs) = do
412+ i <- get
413+ tell $ indent (level i) ++ "TOPBASE(" ++ show n ++ ");\n"
414+ bcc xs
415+bcc ((BASETOP n):xs) = do
416+ i <- get
417+ tell $ indent (level i) ++ "BASETOP(" ++ show n ++ ");\n"
418+ bcc xs
419+bcc (STOREOLD:xs) = do
420+ i <- get
421+ tell $ indent (level i) ++ "STOREOLD;\n"
422+ bcc xs
423+bcc ((OP l fn args):xs) = do
424+ i <- get
425+ tell $ indent (level i) ++ doOp (creg l ++ " = ") fn args ++ ";\n"
426+ bcc xs
427+bcc ((FOREIGNCALL l rty (FStr fn@('&':name)) []):xs) = do
428+ i <- get
429+ tell $ indent (level i) ++ c_irts (toFType rty) (creg l ++ " = ") fn ++ ";\n"
430+ bcc xs
431+bcc ((FOREIGNCALL l rty (FStr fn) (x:xs)):zs) | fn == "%wrapper"
432+ = do
433+ i <- get
434+ tell $ indent (level i) ++ c_irts (toFType rty) (creg l ++ " = ")
334435 ("_idris_get_wrapper(" ++ creg (snd x) ++ ")") ++ ";\n"
335−bcc i (FOREIGNCALL l rty (FStr fn) (x:xs)) | fn == "%dynamic"
336− = indent i ++ c_irts (toFType rty) (creg l ++ " = ")
436+ bcc zs
437+bcc ((FOREIGNCALL l rty (FStr fn) (x:xs)):zs) | fn == "%dynamic"
438+ = do
439+ i <- get
440+ tell $ indent (level i) ++ c_irts (toFType rty) (creg l ++ " = ")
337441 ("(*(" ++ cFnSig "" rty xs ++ ") GETPTR(" ++ creg (snd x) ++ "))" ++
338442 "(" ++ showSep "," (map fcall xs) ++ ")") ++ ";\n"
339−bcc i (FOREIGNCALL l rty (FStr fn) args)
340− = indent i ++
341− c_irts (toFType rty) (creg l ++ " = ")
342− (fn ++ "(" ++ showSep "," (map fcall args) ++ ")") ++ ";\n"
343−bcc i (FOREIGNCALL l rty _ args) = error "Foreign Function calls cannot be partially applied, without being inlined."
344−bcc i (NULL r) = indent i ++ creg r ++ " = NULL;\n" -- clear, so it'll be GCed
345−bcc i (ERROR str) = indent i ++ "fprintf(stderr, " ++ show str ++ "); fprintf(stderr, \"\\n\"); exit(-1);\n"
443+ bcc zs
444+bcc ((FOREIGNCALL l rty (FStr fn) args):xs) = do
445+ i <- get
446+ tell $ indent (level i) ++ c_irts (toFType rty) (creg l ++ " = ")
447+ (fn ++ "(" ++ showSep "," (map fcall args) ++ ")") ++ ";\n"
448+ bcc xs
449+bcc ((FOREIGNCALL l rty _ args):_) = error "Foreign Function calls cannot be partially applied, without being inlined."
450+bcc ((NULL r):xs) = do
451+ i <- get
452+ tell $ indent (level i) ++ creg r ++ " = NULL;\n" -- clear, so it'll be GCed
453+ bcc xs
454+bcc ((ERROR str):xs) = do
455+ i <- get
456+ tell $ indent (level i) ++ "fprintf(stderr, "
457+ ++ show str ++ "); fprintf(stderr, \"\\n\"); exit(-1);\n"
458+ bcc xs
346459-- bcc i c = error (show c) -- indent i ++ "// not done yet\n"
347460
461+getBC code xs = do
462+ i <- get
463+ let (a, s, w) = runRWS (bcc code) 0 (i { level = level i + 1 })
464+ return w
465+
348466fcall (t, arg) = irts_c (toFType t) (creg arg)
349467-- Deconstruct the Foreign type in the defunctionalised expression and build
350468-- a foreign type description for c_irts and irts_c