-----------------------------------------------------------------------------
--
--- (c) The University of Glasgow, 2004
+-- (c) The University of Glasgow, 2004-2006
--
-- Parser for concrete Cmm.
--
-----------------------------------------------------------------------------
{
+{-# OPTIONS -w #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and fix
+-- any warnings in the module. See
+-- http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
+-- for details
+
module CmmParse ( parseCmmFile ) where
import CgMonad
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.Array
import Data.Char ( ord )
-
-#include "HsVersions.h"
+import System.Exit
}
%token
'if' { L _ (CmmT_if) }
'jump' { L _ (CmmT_jump) }
'foreign' { L _ (CmmT_foreign) }
+ 'never' { L _ (CmmT_never) }
+ 'prim' { L _ (CmmT_prim) }
+ 'return' { L _ (CmmT_return) }
+ 'returns' { L _ (CmmT_returns) }
'import' { L _ (CmmT_import) }
'switch' { L _ (CmmT_switch) }
'case' { L _ (CmmT_case) }
| 'CLOSURE' '(' NAME lits ')'
{ do lits <- sequence $4;
return $ map CmmStaticLit $
- mkStaticClosure (mkRtsInfoLabelFS $3)
+ mkStaticClosure (mkForeignLabel $3 Nothing True)
+ -- mkForeignLabel because these are only used
+ -- for CHARLIKE and INTLIKE closures in the RTS.
dontCareCCS (map getLit lits) [] [] [] }
-- arrays of closures required for the CHARLIKE & INTLIKE arrays
| ',' expr lits { $2 : $3 }
cmmproc :: { ExtCode }
- : info '{' body '}'
- { do (info_lbl, info1, info2) <- $1;
- stmts <- getCgStmtsEC (loopDecls $3)
- blks <- code (cgStmtsToBlocks stmts)
- code (emitInfoTableAndCode info_lbl info1 info2 [] blks) }
-
- | info ';'
- { do (info_lbl, info1, info2) <- $1;
- code (emitInfoTableAndCode info_lbl info1 info2 [] []) }
-
- | NAME '{' body '}'
- { do stmts <- getCgStmtsEC (loopDecls $3);
+-- TODO: add real SRT/info tables to parsed Cmm
+ : info maybe_formals_without_kinds maybe_gc_block maybe_frame '{' body '}'
+ { do ((entry_ret_label, info, live, formals, gc_block, frame), stmts) <-
+ getCgStmtsEC' $ loopDecls $ do {
+ (entry_ret_label, info, live) <- $1;
+ formals <- sequence $2;
+ gc_block <- $3;
+ frame <- $4;
+ $6;
+ return (entry_ret_label, info, live, formals, gc_block, frame) }
blks <- code (cgStmtsToBlocks stmts)
- code (emitProc [] (mkRtsCodeLabelFS $1) [] blks) }
-
-info :: { ExtFCode (CLabel, [CmmLit],[CmmLit]) }
+ code (emitInfoTableAndCode entry_ret_label (CmmInfo gc_block frame info) formals blks) }
+
+ | info maybe_formals_without_kinds ';'
+ { do (entry_ret_label, info, live) <- $1;
+ formals <- sequence $2;
+ code (emitInfoTableAndCode entry_ret_label (CmmInfo Nothing Nothing info) formals []) }
+
+ | NAME maybe_formals_without_kinds maybe_gc_block maybe_frame '{' body '}'
+ { do ((formals, gc_block, frame), stmts) <-
+ getCgStmtsEC' $ loopDecls $ do {
+ formals <- sequence $2;
+ gc_block <- $3;
+ frame <- $4;
+ $6;
+ return (formals, gc_block, frame) }
+ blks <- code (cgStmtsToBlocks stmts)
+ code (emitProc (CmmInfo gc_block frame CmmNonInfoTable) (mkRtsCodeLabelFS $1) formals blks) }
+
+info :: { ExtFCode (CLabel, CmmInfoTable, [Maybe LocalReg]) }
: 'INFO_TABLE' '(' NAME ',' INT ',' INT ',' INT ',' STRING ',' STRING ')'
-- ptrs, nptrs, closure type, description, type
- { stdInfo $3 $5 $7 0 $9 $11 $13 }
+ { do prof <- profilingInfo $11 $13
+ return (mkRtsEntryLabelFS $3,
+ CmmInfoTable prof (fromIntegral $9)
+ (ThunkInfo (fromIntegral $5, fromIntegral $7) NoC_SRT),
+ []) }
| 'INFO_TABLE_FUN' '(' NAME ',' INT ',' INT ',' INT ',' STRING ',' STRING ',' INT ')'
-- ptrs, nptrs, closure type, description, type, fun type
- { funInfo $3 $5 $7 $9 $11 $13 $15 }
+ { do prof <- profilingInfo $11 $13
+ return (mkRtsEntryLabelFS $3,
+ CmmInfoTable prof (fromIntegral $9)
+ (FunInfo (fromIntegral $5, fromIntegral $7) NoC_SRT (fromIntegral $15) 0
+ (ArgSpec 0)
+ zeroCLit),
+ []) }
+ -- we leave most of the fields zero here. This is only used
+ -- to generate the BCO info table in the RTS at the moment.
+
+ -- A variant with a non-zero arity (needed to write Main_main in Cmm)
+ | 'INFO_TABLE_FUN' '(' NAME ',' INT ',' INT ',' INT ',' STRING ',' STRING ',' INT ',' INT ')'
+ -- ptrs, nptrs, closure type, description, type, fun type, arity
+ { do prof <- profilingInfo $11 $13
+ return (mkRtsEntryLabelFS $3,
+ CmmInfoTable prof (fromIntegral $9)
+ (FunInfo (fromIntegral $5, fromIntegral $7) NoC_SRT (fromIntegral $15) (fromIntegral $17)
+ (ArgSpec 0)
+ zeroCLit),
+ []) }
+ -- we leave most of the fields zero here. This is only used
+ -- to generate the BCO info table in the RTS at the moment.
| '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 }
+ { do prof <- profilingInfo $13 $15
+ -- If profiling is on, this string gets duplicated,
+ -- but that's the way the old code did it we can fix it some other time.
+ desc_lit <- code $ mkStringCLit $13
+ return (mkRtsEntryLabelFS $3,
+ CmmInfoTable prof (fromIntegral $11)
+ (ConstrInfo (fromIntegral $5, fromIntegral $7) (fromIntegral $9) desc_lit),
+ []) }
| '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 }
+ { do prof <- profilingInfo $9 $11
+ return (mkRtsEntryLabelFS $3,
+ CmmInfoTable prof (fromIntegral $7)
+ (ThunkSelectorInfo (fromIntegral $5) NoC_SRT),
+ []) }
+
+ | 'INFO_TABLE_RET' '(' NAME ',' INT ')'
+ -- closure type (no live regs)
+ { do let infoLabel = mkRtsInfoLabelFS $3
+ return (mkRtsRetLabelFS $3,
+ CmmInfoTable (ProfilingInfo zeroCLit zeroCLit) (fromIntegral $5)
+ (ContInfo [] NoC_SRT),
+ []) }
+
+ | 'INFO_TABLE_RET' '(' NAME ',' INT ',' formals_without_kinds0 ')'
+ -- closure type, live regs
+ { do live <- sequence (map (liftM Just) $7)
+ return (mkRtsRetLabelFS $3,
+ CmmInfoTable (ProfilingInfo zeroCLit zeroCLit) (fromIntegral $5)
+ (ContInfo live NoC_SRT),
+ live) }
body :: { ExtCode }
: {- empty -} { return () }
| stmt body { do $1; $2 }
decl :: { ExtCode }
- : type names ';' { mapM_ (newLocal $1) $2 }
- | 'import' names ';' { return () } -- ignore imports
+ : type names ';' { mapM_ (newLocal defaultKind $1) $2 }
+ | STRING type names ';' {% do k <- parseGCKind $1;
+ return $ mapM_ (newLocal k $2) $3 }
+
+ | 'import' names ';' { mapM_ newImport $2 }
| 'export' names ';' { return () } -- ignore exports
names :: { [FastString] }
stmt :: { ExtCode }
: ';' { nopEC }
- | block_id ':' { code (labelC $1) }
+ | NAME ':'
+ { do l <- newLabel $1; code (labelC l) }
- | lreg '=' expr ';'
+ | lreg '=' expr ';'
{ do reg <- $1; e <- $3; stmtEC (CmmAssign reg e) }
| type '[' expr ']' '=' expr ';'
{ doStore $1 $3 $6 }
- | 'foreign' STRING expr '(' hint_exprs0 ')' vols ';'
- {% foreignCall $2 [] $3 $5 $7 }
- | lreg '=' 'foreign' STRING expr '(' hint_exprs0 ')' vols ';'
- {% let result = do r <- $1; return (r,NoHint) in
- foreignCall $4 [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
- foreignCall $5 [result] $6 $8 $10 }
+
+ -- Gah! We really want to say "maybe_results" but that causes
+ -- a shift/reduce conflict with assignment. We either
+ -- we expand out the no-result and single result cases or
+ -- we tweak the syntax to avoid the conflict. The later
+ -- option is taken here because the other way would require
+ -- multiple levels of expanding and get unwieldy.
+ | maybe_results 'foreign' STRING expr '(' cmm_kind_exprs0 ')' safety vols opt_never_returns ';'
+ {% foreignCall $3 $1 $4 $6 $9 $8 $10 }
+ | maybe_results 'prim' '%' NAME '(' cmm_kind_exprs0 ')' safety vols ';'
+ {% primCall $1 $4 $6 $9 $8 }
-- stmt-level macros, stealing syntax from ordinary C-- function calls.
-- Perhaps we ought to use the %%-form?
| NAME '(' exprs0 ')' ';'
{% stmtMacro $1 $3 }
| 'switch' maybe_range expr '{' arms default '}'
{ doSwitch $2 $3 $5 $6 }
- | 'goto' block_id ';'
- { stmtEC (CmmBranch $2) }
- | 'jump' expr {-maybe_actuals-} ';'
- { do e <- $2; stmtEC (CmmJump e []) }
+ | 'goto' NAME ';'
+ { do l <- lookupLabel $2; stmtEC (CmmBranch l) }
+ | 'jump' expr maybe_actuals ';'
+ { do e1 <- $2; e2 <- sequence $3; stmtEC (CmmJump e1 e2) }
+ | 'return' maybe_actuals ';'
+ { do e <- sequence $2; stmtEC (CmmReturn e) }
| 'if' bool_expr '{' body '}' else
{ ifThenElse $2 $4 $6 }
+opt_never_returns :: { CmmReturnInfo }
+ : { CmmMayReturn }
+ | 'never' 'returns' { CmmNeverReturns }
+
bool_expr :: { ExtFCode BoolExpr }
: bool_op { $1 }
| expr { do e <- $1; return (BoolTest e) }
| '(' bool_op ')' { $2 }
-- This is not C-- syntax. What to do?
+safety :: { CmmSafety }
+ : {- empty -} { CmmUnsafe } -- Default may change soon
+ | STRING {% parseSafety $1 }
+
+-- This is not C-- syntax. What to do?
vols :: { Maybe [GlobalReg] }
: {- empty -} { Nothing }
| '[' ']' { Just [] }
: {- empty -} { wordRep }
| '::' type { $2 }
-hint_exprs0 :: { [ExtFCode (CmmExpr, MachHint)] }
+maybe_actuals :: { [ExtFCode CmmActual] }
+ : {- empty -} { [] }
+ | '(' cmm_kind_exprs0 ')' { $2 }
+
+cmm_kind_exprs0 :: { [ExtFCode CmmActual] }
: {- empty -} { [] }
- | hint_exprs { $1 }
+ | cmm_kind_exprs { $1 }
-hint_exprs :: { [ExtFCode (CmmExpr, MachHint)] }
- : hint_expr { [$1] }
- | hint_expr ',' hint_exprs { $1 : $3 }
+cmm_kind_exprs :: { [ExtFCode CmmActual] }
+ : cmm_kind_expr { [$1] }
+ | cmm_kind_expr ',' cmm_kind_exprs { $1 : $3 }
-hint_expr :: { ExtFCode (CmmExpr, MachHint) }
- : expr { do e <- $1; return (e, inferHint e) }
- | expr STRING {% do h <- parseHint $2;
+cmm_kind_expr :: { ExtFCode CmmActual }
+ : expr { do e <- $1; return (CmmHinted e (inferCmmKind e)) }
+ | expr STRING {% do h <- parseCmmKind $2;
return $ do
- e <- $1; return (e,h) }
+ e <- $1; return (CmmHinted e h) }
exprs0 :: { [ExtFCode CmmExpr] }
: {- empty -} { [] }
: NAME { lookupName $1 }
| GLOBALREG { return (CmmReg (CmmGlobal $1)) }
+maybe_results :: { [ExtFCode CmmFormal] }
+ : {- empty -} { [] }
+ | '(' cmm_formals ')' '=' { $2 }
+
+cmm_formals :: { [ExtFCode CmmFormal] }
+ : cmm_formal { [$1] }
+ | cmm_formal ',' { [$1] }
+ | cmm_formal ',' cmm_formals { $1 : $3 }
+
+cmm_formal :: { ExtFCode CmmFormal }
+ : local_lreg { do e <- $1; return (CmmHinted e (inferCmmKind (CmmReg (CmmLocal e)))) }
+ | STRING local_lreg {% do h <- parseCmmKind $1;
+ return $ do
+ e <- $2; return (CmmHinted e h) }
+
+local_lreg :: { ExtFCode LocalReg }
+ : NAME { do e <- lookupName $1;
+ return $
+ case e of
+ CmmReg (CmmLocal r) -> r
+ other -> pprPanic "CmmParse:" (ftext $1 <> text " not a local register") }
+
lreg :: { ExtFCode CmmReg }
: NAME { do e <- lookupName $1;
return $
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.
+maybe_formals_without_kinds :: { [ExtFCode LocalReg] }
+ : {- empty -} { [] }
+ | '(' formals_without_kinds0 ')' { $2 }
+
+formals_without_kinds0 :: { [ExtFCode LocalReg] }
+ : {- empty -} { [] }
+ | formals_without_kinds { $1 }
+
+formals_without_kinds :: { [ExtFCode LocalReg] }
+ : formal_without_kind ',' { [$1] }
+ | formal_without_kind { [$1] }
+ | formal_without_kind ',' formals_without_kinds { $1 : $3 }
+
+formal_without_kind :: { ExtFCode LocalReg }
+ : type NAME { newLocal defaultKind $1 $2 }
+ | STRING type NAME {% do k <- parseGCKind $1;
+ return $ newLocal k $2 $3 }
+
+maybe_frame :: { ExtFCode (Maybe UpdateFrame) }
+ : {- empty -} { return Nothing }
+ | 'jump' expr '(' exprs0 ')' { do { target <- $2;
+ args <- sequence $4;
+ return $ Just (UpdateFrame target args) } }
+
+maybe_gc_block :: { ExtFCode (Maybe BlockId) }
+ : {- empty -} { return Nothing }
+ | 'goto' NAME
+ { do l <- lookupLabel $2; return (Just l) }
type :: { MachRep }
: 'bits8' { I8 }
section "text" = Text
section "data" = Data
section "rodata" = ReadOnlyData
+section "relrodata" = RelocatableReadOnlyData
section "bss" = UninitialisedData
section s = OtherSection s
exprMacros :: UniqFM ([CmmExpr] -> CmmExpr)
exprMacros = listToUFM [
- ( FSLIT("ENTRY_CODE"), \ [x] -> entryCode x ),
- ( FSLIT("INFO_PTR"), \ [x] -> closureInfoPtr x ),
- ( FSLIT("STD_INFO"), \ [x] -> infoTable x ),
- ( FSLIT("FUN_INFO"), \ [x] -> funInfoTable x ),
- ( FSLIT("GET_ENTRY"), \ [x] -> entryCode (closureInfoPtr x) ),
- ( FSLIT("GET_STD_INFO"), \ [x] -> infoTable (closureInfoPtr x) ),
- ( 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 "ENTRY_CODE", \ [x] -> entryCode x ),
+ ( fsLit "INFO_PTR", \ [x] -> closureInfoPtr x ),
+ ( fsLit "STD_INFO", \ [x] -> infoTable x ),
+ ( fsLit "FUN_INFO", \ [x] -> funInfoTable x ),
+ ( fsLit "GET_ENTRY", \ [x] -> entryCode (closureInfoPtr x) ),
+ ( fsLit "GET_STD_INFO", \ [x] -> infoTable (closureInfoPtr x) ),
+ ( 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 )
]
-- 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 )
]
-parseHint :: String -> P MachHint
-parseHint "ptr" = return PtrHint
-parseHint "signed" = return SignedHint
-parseHint "float" = return FloatHint
-parseHint str = fail ("unrecognised hint: " ++ str)
+callishMachOps = listToUFM $
+ map (\(x, y) -> (mkFastString x, y)) [
+ ( "write_barrier", MO_WriteBarrier )
+ -- ToDo: the rest, maybe
+ ]
+
+parseSafety :: String -> P CmmSafety
+parseSafety "safe" = return (CmmSafe NoC_SRT)
+parseSafety "unsafe" = return CmmUnsafe
+parseSafety str = fail ("unrecognised safety: " ++ str)
+
+parseCmmKind :: String -> P CmmKind
+parseCmmKind "ptr" = return PtrHint
+parseCmmKind "signed" = return SignedHint
+parseCmmKind "float" = return FloatHint
+parseCmmKind str = fail ("unrecognised hint: " ++ str)
+
+parseGCKind :: String -> P GCKind
+parseGCKind "ptr" = return GCKindPtr
+parseGCKind str = fail ("unrecognized kin: " ++ str)
+
+defaultKind :: GCKind
+defaultKind = GCKindNonPtr
-- labels are always pointers, so we might as well infer the hint
-inferHint :: CmmExpr -> MachHint
-inferHint (CmmLit (CmmLabel _)) = PtrHint
-inferHint (CmmReg (CmmGlobal g)) | isPtrGlobalReg g = PtrHint
-inferHint _ = NoHint
+inferCmmKind :: CmmExpr -> CmmKind
+inferCmmKind (CmmLit (CmmLabel _)) = PtrHint
+inferCmmKind (CmmReg (CmmGlobal g)) | isPtrGlobalReg g = PtrHint
+inferCmmKind _ = NoHint
isPtrGlobalReg Sp = True
isPtrGlobalReg SpLim = True
stmtMacros :: UniqFM ([CmmExpr] -> Code)
stmtMacros = listToUFM [
- ( FSLIT("CCS_ALLOC"), \[words,ccs] -> profAlloc words ccs ),
- ( FSLIT("CLOSE_NURSERY"), \[] -> emitCloseNursery ),
- ( FSLIT("ENTER_CCS_PAP_CL"), \[e] -> enterCostCentrePAP e ),
- ( FSLIT("ENTER_CCS_THUNK"), \[e] -> enterCostCentreThunk e ),
- ( FSLIT("HP_CHK_GEN"), \[words,liveness,reentry] ->
+ ( fsLit "CCS_ALLOC", \[words,ccs] -> profAlloc words ccs ),
+ ( fsLit "CLOSE_NURSERY", \[] -> emitCloseNursery ),
+ ( fsLit "ENTER_CCS_PAP_CL", \[e] -> enterCostCentrePAP e ),
+ ( fsLit "ENTER_CCS_THUNK", \[e] -> enterCostCentreThunk e ),
+ ( fsLit "HP_CHK_GEN", \[words,liveness,reentry] ->
hpChkGen words liveness reentry ),
- ( FSLIT("HP_CHK_NP_ASSIGN_SP0"), \[e,f] -> hpChkNodePointsAssignSp0 e f ),
- ( FSLIT("LOAD_THREAD_STATE"), \[] -> emitLoadThreadState ),
- ( FSLIT("LDV_ENTER"), \[e] -> ldvEnter e ),
- ( FSLIT("LDV_RECORD_CREATE"), \[e] -> ldvRecordCreate e ),
- ( FSLIT("OPEN_NURSERY"), \[] -> emitOpenNursery ),
- ( FSLIT("PUSH_UPD_FRAME"), \[sp,e] -> emitPushUpdateFrame sp e ),
- ( FSLIT("SAVE_THREAD_STATE"), \[] -> emitSaveThreadState ),
- ( FSLIT("SET_HDR"), \[ptr,info,ccs] ->
+ ( fsLit "HP_CHK_NP_ASSIGN_SP0", \[e,f] -> hpChkNodePointsAssignSp0 e f ),
+ ( fsLit "LOAD_THREAD_STATE", \[] -> emitLoadThreadState ),
+ ( fsLit "LDV_ENTER", \[e] -> ldvEnter e ),
+ ( fsLit "LDV_RECORD_CREATE", \[e] -> ldvRecordCreate e ),
+ ( fsLit "OPEN_NURSERY", \[] -> emitOpenNursery ),
+ ( fsLit "PUSH_UPD_FRAME", \[sp,e] -> emitPushUpdateFrame sp e ),
+ ( fsLit "SAVE_THREAD_STATE", \[] -> emitSaveThreadState ),
+ ( fsLit "SET_HDR", \[ptr,info,ccs] ->
emitSetDynHdr ptr info ccs ),
- ( FSLIT("STK_CHK_GEN"), \[words,liveness,reentry] ->
+ ( fsLit "STK_CHK_GEN", \[words,liveness,reentry] ->
stkChkGen words liveness reentry ),
- ( FSLIT("STK_CHK_NP"), \[e] -> stkChkNodePoints e ),
- ( FSLIT("TICK_ALLOC_PRIM"), \[hdr,goods,slop] ->
+ ( fsLit "STK_CHK_NP", \[e] -> stkChkNodePoints e ),
+ ( fsLit "TICK_ALLOC_PRIM", \[hdr,goods,slop] ->
tickyAllocPrim hdr goods slop ),
- ( FSLIT("TICK_ALLOC_PAP"), \[goods,slop] ->
+ ( fsLit "TICK_ALLOC_PAP", \[goods,slop] ->
tickyAllocPAP goods slop ),
- ( FSLIT("TICK_ALLOC_UP_THK"), \[goods,slop] ->
+ ( fsLit "TICK_ALLOC_UP_THK", \[goods,slop] ->
tickyAllocThunk goods slop ),
- ( FSLIT("UPD_BH_UPDATABLE"), \[] -> emitBlackHoleCode False ),
- ( FSLIT("UPD_BH_SINGLE_ENTRY"), \[] -> emitBlackHoleCode True ),
-
- ( FSLIT("RET_P"), \[a] -> emitRetUT [(PtrArg,a)]),
- ( FSLIT("RET_N"), \[a] -> emitRetUT [(NonPtrArg,a)]),
- ( FSLIT("RET_PP"), \[a,b] -> emitRetUT [(PtrArg,a),(PtrArg,b)]),
- ( 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_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)])
+ ( fsLit "UPD_BH_UPDATABLE", \[] -> emitBlackHoleCode False ),
+ ( fsLit "UPD_BH_SINGLE_ENTRY", \[] -> emitBlackHoleCode True ),
+
+ ( fsLit "RET_P", \[a] -> emitRetUT [(PtrArg,a)]),
+ ( fsLit "RET_N", \[a] -> emitRetUT [(NonPtrArg,a)]),
+ ( fsLit "RET_PP", \[a,b] -> emitRetUT [(PtrArg,a),(PtrArg,b)]),
+ ( 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_NNN", \[a,b,c] -> emitRetUT [(NonPtrArg,a),(NonPtrArg,b),(NonPtrArg,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) }
-- an environment, which is looped back into the computation. In this
-- way, we can have embedded declarations that scope over the whole
-- procedure, and imports that scope over the entire module.
+-- Discards the local declaration contained within decl'
loopDecls :: ExtFCode a -> ExtFCode a
-loopDecls (EC fcode) =
- EC $ \e s -> fixC (\ ~(decls,a) -> fcode (addListToUFM e decls) [])
+loopDecls (EC fcode) =
+ EC $ \e globalDecls -> do
+ (decls', a) <- fixC (\ ~(decls,a) -> fcode (addListToUFM e (decls ++ globalDecls)) globalDecls)
+ return (globalDecls, a)
getEnv :: ExtFCode Env
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
+newLocal :: GCKind -> MachRep -> FastString -> ExtFCode LocalReg
+newLocal kind ty name = do
+ u <- code newUnique
+ let reg = LocalReg u ty kind
+ addVarDecl name (CmmReg (CmmLocal reg))
+ return reg
+
+-- Creates a foreign label in the import. CLabel's labelDynamic
+-- classifies these labels as dynamic, hence the code generator emits the
+-- PIC code for them.
+newImport :: FastString -> ExtFCode ()
+newImport name
+ = addVarDecl name (CmmLit (CmmLabel (mkForeignLabel name Nothing True)))
+
+newLabel :: FastString -> ExtFCode BlockId
+newLabel name = do
u <- code newUnique
- addVarDecl name (CmmReg (CmmLocal (LocalReg u ty)))
+ 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
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
stmtEC stmt = code (stmtC stmt)
stmtsEC stmts = code (stmtsC stmts)
getCgStmtsEC = code2 getCgStmts'
+getCgStmtsEC' = code2 (\m -> getCgStmts' m >>= f)
+ where f ((decl, b), c) = return ((decl, b), (b, c))
forkLabelledCodeEC ec = do
stmts <- getCgStmtsEC ec
code (forkCgStmts stmts)
-retInfo name size live_bits cl_type vector = 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
- 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
-basicInfo name layout srt_bitmap cl_type desc_str ty_str = do
+profilingInfo desc_str ty_str = do
lit1 <- if opt_SccProfilingOn
then code $ mkStringCLit desc_str
else return (mkIntCLit 0)
lit2 <- if opt_SccProfilingOn
then code $ mkStringCLit ty_str
else return (mkIntCLit 0)
- let info1 = mkStdInfoTable lit1 lit2 (fromIntegral cl_type)
- (fromIntegral srt_bitmap)
- layout
- return (mkRtsInfoLabelFS name, info1, [])
-
-funInfo name ptrs nptrs cl_type desc_str ty_str fun_type = do
- (label,info1,_) <- stdInfo name ptrs nptrs 0{-srt_bitmap-}
- cl_type desc_str ty_str
- let info2 = mkFunGenInfoExtraBits (fromIntegral fun_type) 0 zero zero zero
- -- we leave most of the fields zero here. This is only used
- -- to generate the BCO info table in the RTS at the moment.
- return (label,info1,info2)
- where
- zero = mkIntCLit 0
+ return (ProfilingInfo lit1 lit2)
staticClosure :: FastString -> FastString -> [CmmLit] -> ExtCode
foreignCall
:: String
- -> [ExtFCode (CmmReg,MachHint)]
+ -> [ExtFCode CmmFormal]
-> ExtFCode CmmExpr
- -> [ExtFCode (CmmExpr,MachHint)]
- -> Maybe [GlobalReg] -> P ExtCode
-foreignCall "C" results_code expr_code args_code vols
- = return $ do
- results <- sequence results_code
- expr <- expr_code
- args <- sequence args_code
- code (emitForeignCall' PlayRisky results
- (CmmForeignCall expr CCallConv) args vols)
-foreignCall conv _ _ _ _
- = fail ("unknown calling convention: " ++ conv)
+ -> [ExtFCode CmmActual]
+ -> Maybe [GlobalReg]
+ -> CmmSafety
+ -> CmmReturnInfo
+ -> P ExtCode
+foreignCall conv_string results_code expr_code args_code vols safety ret
+ = do convention <- case conv_string of
+ "C" -> return CCallConv
+ "stdcall" -> return StdCallConv
+ "C--" -> return CmmCallConv
+ _ -> fail ("unknown calling convention: " ++ conv_string)
+ return $ do
+ results <- sequence results_code
+ expr <- expr_code
+ args <- sequence args_code
+ --code (stmtC (CmmCall (CmmCallee expr convention) results args safety))
+ case convention of
+ -- Temporary hack so at least some functions are CmmSafe
+ CmmCallConv -> code (stmtC (CmmCall (CmmCallee expr convention) results args safety ret))
+ _ ->
+ let expr' = adjCallTarget convention expr args in
+ case safety of
+ CmmUnsafe ->
+ code (emitForeignCall' PlayRisky results
+ (CmmCallee expr' convention) args vols NoC_SRT ret)
+ CmmSafe srt ->
+ code (emitForeignCall' (PlaySafe unused) results
+ (CmmCallee expr' convention) args vols NoC_SRT ret) where
+ unused = panic "not used by emitForeignCall'"
+
+adjCallTarget :: CCallConv -> CmmExpr -> [CmmHinted CmmExpr] -> CmmExpr
+#ifdef mingw32_TARGET_OS
+-- On Windows, we have to add the '@N' suffix to the label when making
+-- a call with the stdcall calling convention.
+adjCallTarget StdCallConv (CmmLit (CmmLabel lbl)) args
+ = CmmLit (CmmLabel (addLabelSize lbl (sum (map size args))))
+ where size (CmmHinted e _) = max wORD_SIZE (machRepByteWidth (cmmExprRep e))
+ -- c.f. CgForeignCall.emitForeignCall
+#endif
+adjCallTarget _ expr _
+ = expr
+
+primCall
+ :: [ExtFCode CmmFormal]
+ -> FastString
+ -> [ExtFCode CmmActual]
+ -> Maybe [GlobalReg]
+ -> CmmSafety
+ -> P ExtCode
+primCall results_code name args_code vols safety
+ = case lookupUFM callishMachOps name of
+ Nothing -> fail ("unknown primitive " ++ unpackFS name)
+ Just p -> return $ do
+ results <- sequence results_code
+ args <- sequence args_code
+ case safety of
+ CmmUnsafe ->
+ code (emitForeignCall' PlayRisky results
+ (CmmPrim p) args vols NoC_SRT CmmMayReturn)
+ CmmSafe srt ->
+ code (emitForeignCall' (PlaySafe unused) results
+ (CmmPrim p) args vols NoC_SRT CmmMayReturn) where
+ unused = panic "not used by emitForeignCall'"
doStore :: MachRep -> ExtFCode CmmExpr -> ExtFCode CmmExpr -> ExtCode
doStore rep addr_code val_code
emitStmts stmts
when (sp /= 0) $ stmtC (CmmAssign spReg (cmmRegOffW spReg (-sp)))
stmtC (CmmJump (entryCode (CmmLoad (cmmRegOffW spReg sp) wordRep)) [])
+ -- TODO (when using CPS): emitStmt (CmmReturn (map snd args))
-- -----------------------------------------------------------------------------
-- If-then-else and boolean expressions
-- knows about here.
initEnv :: Env
initEnv = listToUFM [
- ( FSLIT("SIZEOF_StgHeader"),
- CmmLit (CmmInt (fromIntegral (fixedHdrSize * wORD_SIZE)) wordRep) ),
- ( FSLIT("SIZEOF_StgInfoTable"),
- CmmLit (CmmInt (fromIntegral stdInfoTableSizeB) wordRep) )
+ ( fsLit "SIZEOF_StgHeader",
+ Var (CmmLit (CmmInt (fromIntegral (fixedHdrSize * wORD_SIZE)) wordRep) )),
+ ( fsLit "SIZEOF_StgInfoTable",
+ 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" (ppr cmm)
return (Just cmm)
where
no_module = panic "parseCmmFile: no module"
projects / ghc-hetmet.git / blobdiff