cmmproc :: { ExtCode }
-- TODO: add real SRT/info tables to parsed Cmm
- : info maybe_formals maybe_frame '{' body '}'
- { do ((info_lbl, info, live, formals, frame), stmts) <-
+ : info maybe_formals maybe_frame maybe_gc_block '{' body '}'
+ { do ((entry_ret_label, info, live, formals, frame, gc_block), stmts) <-
getCgStmtsEC' $ loopDecls $ do {
- (info_lbl, info, live) <- $1;
+ (entry_ret_label, info, live) <- $1;
formals <- sequence $2;
frame <- $3;
- $5;
- return (info_lbl, info, live, formals, frame) }
+ gc_block <- $4;
+ $6;
+ return (entry_ret_label, info, live, formals, frame, gc_block) }
blks <- code (cgStmtsToBlocks stmts)
- code (emitInfoTableAndCode info_lbl (CmmInfo Nothing frame info) formals blks) }
+ code (emitInfoTableAndCode entry_ret_label (CmmInfo gc_block frame info) formals blks) }
| info maybe_formals ';'
- { do (info_lbl, info, live) <- $1;
+ { do (entry_ret_label, info, live) <- $1;
formals <- sequence $2;
- code (emitInfoTableAndCode info_lbl (CmmInfo Nothing Nothing info) formals []) }
+ code (emitInfoTableAndCode entry_ret_label (CmmInfo Nothing Nothing info) formals []) }
- | NAME maybe_formals maybe_frame '{' body '}'
- { do ((formals, frame), stmts) <-
+ | NAME maybe_formals maybe_frame maybe_gc_block '{' body '}'
+ { do ((formals, frame, gc_block), stmts) <-
getCgStmtsEC' $ loopDecls $ do {
formals <- sequence $2;
frame <- $3;
- $5;
- return (formals, frame) }
+ gc_block <- $4;
+ $6;
+ return (formals, frame, gc_block) }
blks <- code (cgStmtsToBlocks stmts)
- code (emitProc (CmmInfo Nothing frame CmmNonInfoTable) (mkRtsCodeLabelFS $1) formals blks) }
+ 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
{ do prof <- profilingInfo $11 $13
- return (mkRtsInfoLabelFS $3,
+ 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
{ do prof <- profilingInfo $11 $13
- return (mkRtsInfoLabelFS $3,
+ return (mkRtsEntryLabelFS $3,
CmmInfoTable prof (fromIntegral $9)
(FunInfo (fromIntegral $5, fromIntegral $7) NoC_SRT (fromIntegral $15) 0
(ArgSpec 0)
-- 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 (mkRtsInfoLabelFS $3,
+ 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
{ do prof <- profilingInfo $9 $11
- return (mkRtsInfoLabelFS $3,
+ return (mkRtsEntryLabelFS $3,
CmmInfoTable prof (fromIntegral $7)
(ThunkSelectorInfo (fromIntegral $5) NoC_SRT),
[]) }
| 'INFO_TABLE_RET' '(' NAME ',' INT ')'
-- closure type (no live regs)
- { return (mkRtsInfoLabelFS $3,
+ { do let infoLabel = mkRtsInfoLabelFS $3
+ return (mkRtsRetLabelFS $3,
CmmInfoTable (ProfilingInfo zeroCLit zeroCLit) (fromIntegral $5)
(ContInfo [] NoC_SRT),
[]) }
| 'INFO_TABLE_RET' '(' NAME ',' INT ',' formals0 ')'
-- closure type, live regs
{ do live <- sequence (map (liftM Just) $7)
- return (mkRtsInfoLabelFS $3,
+ return (mkRtsRetLabelFS $3,
CmmInfoTable (ProfilingInfo zeroCLit zeroCLit) (fromIntegral $5)
(ContInfo live NoC_SRT),
live) }
| STRING type names ';' {% do k <- parseKind $1;
return $ mapM_ (newLocal k $2) $3 }
- | 'import' names ';' { return () } -- ignore imports
+ | 'import' names ';' { mapM_ newImport $2 }
| 'export' names ';' { return () } -- ignore exports
names :: { [FastString] }
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 }
| typenot8 { $1 }
-- 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 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
results <- sequence results_code
expr <- expr_code
args <- sequence args_code
+ --code (stmtC (CmmCall (CmmForeignCall expr convention) results args safety))
case convention of
-- Temporary hack so at least some functions are CmmSafe
CmmCallConv -> code (stmtC (CmmCall (CmmForeignCall expr convention) results args safety))
projects / ghc-hetmet.git / blobdiff