-----------------------------------------------------------------------------
--
--- (c) The University of Glasgow, 2004
+-- (c) The University of Glasgow, 2004-2006
--
-- Parser for concrete Cmm.
--
import CgTicky
import CgInfoTbls
import CgForeignCall
-import CgTailCall ( pushUnboxedTuple )
-import CgStackery ( emitPushUpdateFrame )
-import ClosureInfo ( C_SRT(..) )
-import CgCallConv ( smallLiveness )
-import CgClosure ( emitBlackHoleCode )
-import CostCentre ( dontCareCCS )
+import CgTailCall
+import CgStackery
+import ClosureInfo
+import CgCallConv
+import CgClosure
+import CostCentre
import Cmm
import PprCmm
-import CmmUtils ( mkIntCLit )
+import CmmUtils
import CmmLex
import CLabel
import MachOp
-import SMRep ( fixedHdrSize, CgRep(..) )
+import SMRep
import Lexer
-import ForeignCall ( CCallConv(..), Safety(..) )
-import Literal ( mkMachInt )
+import ForeignCall
+import Literal
import Unique
import UniqFM
import SrcLoc
-import DynFlags ( DynFlags, DynFlag(..) )
-import Packages ( HomeModules )
-import StaticFlags ( opt_SccProfilingOn )
-import ErrUtils ( printError, dumpIfSet_dyn, showPass )
-import StringBuffer ( hGetStringBuffer )
+import DynFlags
+import StaticFlags
+import ErrUtils
+import StringBuffer
import FastString
-import Panic ( panic )
-import Constants ( wORD_SIZE )
+import Panic
+import Constants
import Outputable
-import Monad ( when )
+import Control.Monad
import Data.Char ( ord )
+import System.Exit
#include "HsVersions.h"
}
'if' { L _ (CmmT_if) }
'jump' { L _ (CmmT_jump) }
'foreign' { L _ (CmmT_foreign) }
+ 'prim' { L _ (CmmT_prim) }
'import' { L _ (CmmT_import) }
'switch' { L _ (CmmT_switch) }
'case' { L _ (CmmT_case) }
| 'INFO_TABLE_CONSTR' '(' NAME ',' INT ',' INT ',' INT ',' INT ',' STRING ',' STRING ')'
-- ptrs, nptrs, tag, closure type, description, type
- { stdInfo $3 $5 $7 $9 $11 $13 $15 }
+ { conInfo $3 $5 $7 $9 $11 $13 $15 }
| 'INFO_TABLE_SELECTOR' '(' NAME ',' INT ',' INT ',' STRING ',' STRING ')'
-- selector, closure type, description, type
{ basicInfo $3 (mkIntCLit (fromIntegral $5)) 0 $7 $9 $11 }
- | 'INFO_TABLE_RET' '(' NAME ',' INT ',' INT ',' INT maybe_vec ')'
- { retInfo $3 $5 $7 $9 $10 }
-
-maybe_vec :: { [CmmLit] }
- : {- empty -} { [] }
- | ',' NAME maybe_vec { CmmLabel (mkRtsCodeLabelFS $2) : $3 }
+ | 'INFO_TABLE_RET' '(' NAME ',' INT ',' INT ',' INT ')'
+ { retInfo $3 $5 $7 $9 }
body :: { ExtCode }
: {- empty -} { return () }
stmt :: { ExtCode }
: ';' { nopEC }
- | block_id ':' { code (labelC $1) }
+ | NAME ':'
+ { do l <- newLabel $1; code (labelC l) }
| lreg '=' expr ';'
{ do reg <- $1; e <- $3; stmtEC (CmmAssign reg e) }
| lreg '=' 'foreign' STRING expr '(' hint_exprs0 ')' vols ';'
{% let result = do r <- $1; return (r,NoHint) in
foreignCall $4 [result] $5 $7 $9 }
+ | 'prim' '%' NAME '(' hint_exprs0 ')' vols ';'
+ {% primCall [] $3 $5 $7 }
+ | lreg '=' 'prim' '%' NAME '(' hint_exprs0 ')' vols ';'
+ {% let result = do r <- $1; return (r,NoHint) in
+ primCall [result] $5 $7 $9 }
| STRING lreg '=' 'foreign' STRING expr '(' hint_exprs0 ')' vols ';'
{% do h <- parseHint $1;
let result = do r <- $2; return (r,h) in
{% stmtMacro $1 $3 }
| 'switch' maybe_range expr '{' arms default '}'
{ doSwitch $2 $3 $5 $6 }
- | 'goto' block_id ';'
- { stmtEC (CmmBranch $2) }
+ | 'goto' NAME ';'
+ { do l <- lookupLabel $2; stmtEC (CmmBranch l) }
| 'jump' expr {-maybe_actuals-} ';'
{ do e <- $2; stmtEC (CmmJump e []) }
| 'if' bool_expr '{' body '}' else
other -> pprPanic "CmmParse:" (ftext $1 <> text " not a register") }
| GLOBALREG { return (CmmGlobal $1) }
-block_id :: { BlockId }
- : NAME { BlockId (newTagUnique (getUnique $1) 'L') }
- -- TODO: ugh. The unique of a FastString has a null
- -- tag, so we have to put our own tag on. We should
- -- really make a new unique for every label, and keep
- -- them in an environment.
-
type :: { MachRep }
: 'bits8' { I8 }
| typenot8 { $1 }
section "text" = Text
section "data" = Data
section "rodata" = ReadOnlyData
+section "relrodata" = RelocatableReadOnlyData
section "bss" = UninitialisedData
section s = OtherSection s
( FSLIT("GET_FUN_INFO"), \ [x] -> funInfoTable (closureInfoPtr x) ),
( FSLIT("INFO_TYPE"), \ [x] -> infoTableClosureType x ),
( FSLIT("INFO_PTRS"), \ [x] -> infoTablePtrs x ),
- ( FSLIT("INFO_NPTRS"), \ [x] -> infoTableNonPtrs x ),
- ( FSLIT("RET_VEC"), \ [info, conZ] -> retVec info conZ )
+ ( FSLIT("INFO_NPTRS"), \ [x] -> infoTableNonPtrs x )
]
-- we understand a subset of C-- primitives:
( "f2f32", flip MO_S_Conv F32 ), -- TODO; rounding mode
( "f2f64", flip MO_S_Conv F64 ), -- TODO; rounding mode
( "f2i8", flip MO_S_Conv I8 ),
- ( "f2i16", flip MO_S_Conv I8 ),
- ( "f2i32", flip MO_S_Conv I8 ),
- ( "f2i64", flip MO_S_Conv I8 ),
+ ( "f2i16", flip MO_S_Conv I16 ),
+ ( "f2i32", flip MO_S_Conv I32 ),
+ ( "f2i64", flip MO_S_Conv I64 ),
( "i2f32", flip MO_S_Conv F32 ),
( "i2f64", flip MO_S_Conv F64 )
]
+callishMachOps = listToUFM $
+ map (\(x, y) -> (mkFastString x, y)) [
+ ( "write_barrier", MO_WriteBarrier )
+ -- ToDo: the rest, maybe
+ ]
+
parseHint :: String -> P MachHint
parseHint "ptr" = return PtrHint
parseHint "signed" = return SignedHint
( FSLIT("RET_NN"), \[a,b] -> emitRetUT [(NonPtrArg,a),(NonPtrArg,b)]),
( FSLIT("RET_NP"), \[a,b] -> emitRetUT [(NonPtrArg,a),(PtrArg,b)]),
( FSLIT("RET_PPP"), \[a,b,c] -> emitRetUT [(PtrArg,a),(PtrArg,b),(PtrArg,c)]),
+ ( FSLIT("RET_NPP"), \[a,b,c] -> emitRetUT [(NonPtrArg,a),(PtrArg,b),(PtrArg,c)]),
( FSLIT("RET_NNP"), \[a,b,c] -> emitRetUT [(NonPtrArg,a),(NonPtrArg,b),(PtrArg,c)]),
( FSLIT("RET_NNNP"), \[a,b,c,d] -> emitRetUT [(NonPtrArg,a),(NonPtrArg,b),(NonPtrArg,c),(PtrArg,d)]),
( FSLIT("RET_NPNP"), \[a,b,c,d] -> emitRetUT [(NonPtrArg,a),(PtrArg,b),(NonPtrArg,c),(PtrArg,d)])
-- to collect declarations as we parse the proc, and feed the environment
-- back in circularly (to avoid a two-pass algorithm).
-type Decls = [(FastString,CmmExpr)]
-type Env = UniqFM CmmExpr
+data Named = Var CmmExpr | Label BlockId
+type Decls = [(FastString,Named)]
+type Env = UniqFM Named
newtype ExtFCode a = EC { unEC :: Env -> Decls -> FCode (Decls, a) }
getEnv = EC $ \e s -> return (s, e)
addVarDecl :: FastString -> CmmExpr -> ExtCode
-addVarDecl var expr = EC $ \e s -> return ((var,expr):s, ())
+addVarDecl var expr = EC $ \e s -> return ((var, Var expr):s, ())
+
+addLabel :: FastString -> BlockId -> ExtCode
+addLabel name block_id = EC $ \e s -> return ((name, Label block_id):s, ())
newLocal :: MachRep -> FastString -> ExtCode
newLocal ty name = do
u <- code newUnique
addVarDecl name (CmmReg (CmmLocal (LocalReg u ty)))
+newLabel :: FastString -> ExtFCode BlockId
+newLabel name = do
+ u <- code newUnique
+ addLabel name (BlockId u)
+ return (BlockId u)
+
+lookupLabel :: FastString -> ExtFCode BlockId
+lookupLabel name = do
+ env <- getEnv
+ return $
+ case lookupUFM env name of
+ Just (Label l) -> l
+ _other -> BlockId (newTagUnique (getUnique name) 'L')
+
-- Unknown names are treated as if they had been 'import'ed.
-- This saves us a lot of bother in the RTS sources, at the expense of
-- deferring some errors to link time.
env <- getEnv
return $
case lookupUFM env name of
- Nothing -> CmmLit (CmmLabel (mkRtsCodeLabelFS name))
- Just e -> e
+ Just (Var e) -> e
+ _other -> CmmLit (CmmLabel (mkRtsCodeLabelFS name))
-- Lifting FCode computations into the ExtFCode monad:
code :: FCode a -> ExtFCode a
stmts <- getCgStmtsEC ec
code (forkCgStmts stmts)
-retInfo name size live_bits cl_type vector = do
+retInfo name size live_bits cl_type = do
let liveness = smallLiveness (fromIntegral size) (fromIntegral live_bits)
info_lbl = mkRtsRetInfoLabelFS name
(info1,info2) = mkRetInfoTable info_lbl liveness NoC_SRT
- (fromIntegral cl_type) vector
+ (fromIntegral cl_type)
return (info_lbl, info1, info2)
stdInfo name ptrs nptrs srt_bitmap cl_type desc_str ty_str =
basicInfo name (packHalfWordsCLit ptrs nptrs)
srt_bitmap cl_type desc_str ty_str
+conInfo name ptrs nptrs srt_bitmap cl_type desc_str ty_str = do
+ (lbl, info1, _) <- basicInfo name (packHalfWordsCLit ptrs nptrs)
+ srt_bitmap cl_type desc_str ty_str
+ desc_lit <- code $ mkStringCLit desc_str
+ let desc_field = makeRelativeRefTo lbl desc_lit
+ return (lbl, info1, [desc_field])
+
basicInfo name layout srt_bitmap cl_type desc_str ty_str = do
+ let info_lbl = mkRtsInfoLabelFS name
lit1 <- if opt_SccProfilingOn
- then code $ mkStringCLit desc_str
+ then code $ do lit <- mkStringCLit desc_str
+ return (makeRelativeRefTo info_lbl lit)
else return (mkIntCLit 0)
lit2 <- if opt_SccProfilingOn
- then code $ mkStringCLit ty_str
+ then code $ do lit <- mkStringCLit ty_str
+ return (makeRelativeRefTo info_lbl lit)
else return (mkIntCLit 0)
let info1 = mkStdInfoTable lit1 lit2 (fromIntegral cl_type)
(fromIntegral srt_bitmap)
layout
- return (mkRtsInfoLabelFS name, info1, [])
+ return (info_lbl, info1, [])
funInfo name ptrs nptrs cl_type desc_str ty_str fun_type = do
(label,info1,_) <- stdInfo name ptrs nptrs 0{-srt_bitmap-}
foreignCall conv _ _ _ _
= fail ("unknown calling convention: " ++ conv)
+primCall
+ :: [ExtFCode (CmmReg,MachHint)]
+ -> FastString
+ -> [ExtFCode (CmmExpr,MachHint)]
+ -> Maybe [GlobalReg] -> P ExtCode
+primCall results_code name args_code vols
+ = case lookupUFM callishMachOps name of
+ Nothing -> fail ("unknown primitive " ++ unpackFS name)
+ Just p -> return $ do
+ results <- sequence results_code
+ args <- sequence args_code
+ code (emitForeignCall' PlayRisky results (CmmPrim p) args vols)
+
doStore :: MachRep -> ExtFCode CmmExpr -> ExtFCode CmmExpr -> ExtCode
doStore rep addr_code val_code
= do addr <- addr_code
initEnv :: Env
initEnv = listToUFM [
( FSLIT("SIZEOF_StgHeader"),
- CmmLit (CmmInt (fromIntegral (fixedHdrSize * wORD_SIZE)) wordRep) ),
+ Var (CmmLit (CmmInt (fromIntegral (fixedHdrSize * wORD_SIZE)) wordRep) )),
( FSLIT("SIZEOF_StgInfoTable"),
- CmmLit (CmmInt (fromIntegral stdInfoTableSizeB) wordRep) )
+ Var (CmmLit (CmmInt (fromIntegral stdInfoTableSizeB) wordRep) ))
]
-parseCmmFile :: DynFlags -> HomeModules -> FilePath -> IO (Maybe Cmm)
-parseCmmFile dflags hmods filename = do
+parseCmmFile :: DynFlags -> FilePath -> IO (Maybe Cmm)
+parseCmmFile dflags filename = do
showPass dflags "ParseCmm"
buf <- hGetStringBuffer filename
let
-- in there we don't want.
case unP cmmParse init_state of
PFailed span err -> do printError span err; return Nothing
- POk _ code -> do
- cmm <- initC dflags hmods no_module (getCmm (unEC code initEnv [] >> return ()))
- dumpIfSet_dyn dflags Opt_D_dump_cmm "Cmm" (pprCmms [cmm])
+ POk pst code -> do
+ cmm <- initC dflags no_module (getCmm (unEC code initEnv [] >> return ()))
+ let ms = getMessages pst
+ printErrorsAndWarnings dflags ms
+ when (errorsFound dflags ms) $ exitWith (ExitFailure 1)
+ dumpIfSet_dyn dflags Opt_D_dump_cmm "Cmm" (pprCmms [cmm])
return (Just cmm)
where
no_module = panic "parseCmmFile: no module"
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