[project @ 2005-03-07 16:46:08 by simonpj]
[ghc-hetmet.git] / ghc / compiler / main / CodeOutput.lhs
index 15b9a9c..b01b668 100644 (file)
@@ -23,27 +23,27 @@ import qualified PrintJava
 import OccurAnal       ( occurAnalyseBinds )
 #endif
 
-import DriverState     ( v_HCHeader )
-import TyCon           ( TyCon )
-import Id              ( Id )
-import CoreSyn         ( CoreBind )
-import StgSyn          ( StgBinding )
-import AbsCSyn         ( AbstractC )
-import PprAbsC         ( dumpRealC, writeRealC )
-import Module          ( Module )
+import Distribution.Package    ( showPackageId )
+import PprC            ( writeCs )
+import CmmLint         ( cmmLint )
+import Packages
+import DriverUtil      ( filenameOf )
+import FastString      ( unpackFS )
+import Cmm             ( Cmm )
+import HscTypes
 import CmdLineOpts
-import ErrUtils                ( dumpIfSet_dyn, showPass )
+import ErrUtils                ( dumpIfSet_dyn, showPass, ghcExit )
 import Outputable
 import Pretty          ( Mode(..), printDoc )
-import CmdLineOpts     ( DynFlags, HscLang(..), dopt_OutName )
-
-import DATA_IOREF      ( readIORef )
+import Module          ( Module )
+import ListSetOps      ( removeDupsEq )
+import Maybes          ( firstJust )
 
+import Directory       ( doesFileExist )
 import Monad           ( when )
 import IO
 \end{code}
 
-
 %************************************************************************
 %*                                                                     *
 \subsection{Steering}
@@ -53,44 +53,52 @@ import IO
 \begin{code}
 codeOutput :: DynFlags
           -> Module
-          -> [TyCon]                   -- Local tycons
-          -> [CoreBind]                -- Core bindings
-          -> [(StgBinding,[Id])]       -- The STG program with SRTs
-          -> SDoc              -- C stubs for foreign exported functions
-          -> SDoc              -- Header file prototype for foreign exported functions
-          -> AbstractC         -- Compiled abstract C
+          -> ForeignStubs
+          -> Dependencies
+          -> [Cmm]                     -- Compiled C--
           -> IO (Bool{-stub_h_exists-}, Bool{-stub_c_exists-})
-codeOutput dflags mod_name tycons core_binds stg_binds 
-          c_code h_code flat_abstractC
-  = -- You can have C (c_output) or assembly-language (ncg_output),
+
+codeOutput dflags this_mod foreign_stubs deps flat_abstractC
+  = 
+    -- You can have C (c_output) or assembly-language (ncg_output),
     -- but not both.  [Allowing for both gives a space leak on
     -- flat_abstractC.  WDP 94/10]
 
     -- Dunno if the above comment is still meaningful now.  JRS 001024.
 
-    do { showPass dflags "CodeOutput"
+    do { when (dopt Opt_DoCmmLinting dflags) $ do
+               { showPass dflags "CmmLint"
+               ; let lints = map cmmLint flat_abstractC
+               ; case firstJust lints of
+                       Just err -> do { printDump err
+                                      ; ghcExit 1
+                                      }
+                       Nothing  -> return ()
+               }
+
+       ; showPass dflags "CodeOutput"
        ; let filenm = dopt_OutName dflags 
-       ; stub_names <- outputForeignStubs dflags c_code h_code
-       ; case dopt_HscLang dflags of
-             HscInterpreted -> return stub_names
-             HscAsm         -> outputAsm dflags filenm flat_abstractC
-                              >> return stub_names
-             HscC           -> outputC dflags filenm flat_abstractC stub_names
-                              >> return stub_names
+       ; stubs_exist <- outputForeignStubs dflags foreign_stubs
+       ; case dopt_HscTarget dflags of {
+             HscInterpreted -> return ();
+             HscAsm         -> outputAsm dflags filenm flat_abstractC;
+             HscC           -> outputC dflags filenm flat_abstractC stubs_exist
+                                       deps foreign_stubs;
              HscJava        -> 
 #ifdef JAVA
-                              outputJava dflags filenm mod_name tycons core_binds
-                              >> return stub_names
+                              outputJava dflags filenm mod_name tycons core_binds;
 #else
-                               panic "Java support not compiled into this ghc"
+                               panic "Java support not compiled into this ghc";
 #endif
             HscILX         -> 
 #ifdef ILX
-                              outputIlx dflags filenm mod_name tycons stg_binds
-                              >> return stub_names
+                              let tycons = typeEnvTyCons type_env in
+                              outputIlx dflags filenm mod_name tycons stg_binds;
 #else
-                               panic "ILX support not compiled into this ghc"
+                               panic "ILX support not compiled into this ghc";
 #endif
+         }
+       ; return stubs_exist
        }
 
 doOutput :: String -> (Handle -> IO ()) -> IO ()
@@ -105,14 +113,46 @@ doOutput filenm io_action = bracket (openFile filenm WriteMode) hClose io_action
 %************************************************************************
 
 \begin{code}
-outputC dflags filenm flat_absC (stub_h_exists, _)
-  = do dumpIfSet_dyn dflags Opt_D_dump_realC "Real C" (dumpRealC flat_absC)
-       header <- readIORef v_HCHeader
+outputC dflags filenm flat_absC 
+       (stub_h_exists, _) dependencies foreign_stubs
+  = do 
+       -- figure out which header files to #include in the generated .hc file:
+       --
+       --   * extra_includes from packages
+       --   * -#include options from the cmdline and OPTIONS pragmas
+       --   * the _stub.h file, if there is one.
+       --
+       let packages = dep_pkgs dependencies
+       pkg_configs <- getExplicitPackagesAnd dflags packages
+       let pkg_names = map (showPackageId.package) pkg_configs
+
+       c_includes <- getPackageCIncludes pkg_configs
+       let cmdline_includes = cmdlineHcIncludes dflags -- -#include options
+       
+          ffi_decl_headers 
+             = case foreign_stubs of
+                 NoStubs                 -> []
+                 ForeignStubs _ _ fdhs _ -> map unpackFS (fst (removeDupsEq fdhs))
+                       -- Remove duplicates, because distinct foreign import decls
+                       -- may cite the same #include.  Order doesn't matter.
+
+           all_headers =  c_includes
+                      ++ reverse cmdline_includes
+                      ++ ffi_decl_headers
+
+       let cc_injects = unlines (map mk_include all_headers)
+                  mk_include h_file = 
+                   case h_file of 
+                      '"':_{-"-} -> "#include "++h_file
+                      '<':_      -> "#include "++h_file
+                      _          -> "#include \""++h_file++"\""
+
        doOutput filenm $ \ h -> do
-         hPutStr h header
+         hPutStr h ("/* GHC_PACKAGES " ++ unwords pkg_names ++ "\n*/\n")
+         hPutStr h cc_injects
          when stub_h_exists $ 
-            hPutStrLn h ("#include \"" ++ (hscStubHOutName dflags) ++ "\"")
-         writeRealC h flat_absC
+            hPutStrLn h ("#include \"" ++ (filenameOf (hscStubHOutName dflags)) ++ "\"")
+         writeCs h flat_absC
 \end{code}
 
 
@@ -128,9 +168,8 @@ outputAsm dflags filenm flat_absC
 #ifndef OMIT_NATIVE_CODEGEN
 
   = do ncg_uniqs <- mkSplitUniqSupply 'n'
-       let (stix_final, ncg_output_d) = _scc_ "NativeCodeGen" 
-                                       nativeCodeGen flat_absC ncg_uniqs
-       dumpIfSet_dyn dflags Opt_D_dump_stix "Final stix code" stix_final
+       ncg_output_d <- _scc_ "NativeCodeGen" 
+                         nativeCodeGen dflags flat_absC ncg_uniqs
        dumpIfSet_dyn dflags Opt_D_dump_asm "Asm code" (docToSDoc ncg_output_d)
        _scc_ "OutputAsm" doOutput filenm $
           \f -> printDoc LeftMode f ncg_output_d
@@ -188,11 +227,29 @@ outputIlx dflags filename mod tycons stg_binds
 %************************************************************************
 
 \begin{code}
-outputForeignStubs dflags c_code h_code
+outputForeignStubs :: DynFlags -> ForeignStubs
+                  -> IO (Bool,         -- Header file created
+                         Bool)         -- C file created
+outputForeignStubs dflags NoStubs = do
+-- When compiling External Core files, may need to use stub files from a 
+-- previous compilation
+   hFileExists <- doesFileExist (hscStubHOutName dflags)
+   cFileExists <- doesFileExist (hscStubCOutName dflags)
+   return (hFileExists, cFileExists)
+outputForeignStubs dflags (ForeignStubs h_code c_code _ _)
   = do
        dumpIfSet_dyn dflags Opt_D_dump_foreign
                       "Foreign export header file" stub_h_output_d
 
+       -- we need the #includes from the rts package for the stub files
+       let rtsid = rtsPackageId (pkgState dflags)
+           rts_includes 
+               | ExtPackage pid <- rtsid = 
+                       let rts_pkg = getPackageDetails (pkgState dflags) pid in
+                       concatMap mk_include (includes rts_pkg)
+               | otherwise = []
+           mk_include i = "#include \"" ++ i ++ "\"\n"
+
        stub_h_file_exists
            <- outputForeignStubs_help (hscStubHOutName dflags) stub_h_output_w
                ("#include \"HsFFI.h\"\n" ++ cplusplus_hdr) cplusplus_ftr
@@ -200,16 +257,14 @@ outputForeignStubs dflags c_code h_code
        dumpIfSet_dyn dflags Opt_D_dump_foreign
                       "Foreign export stubs" stub_c_output_d
 
-        hc_header <- readIORef v_HCHeader
-
        stub_c_file_exists
            <- outputForeignStubs_help (hscStubCOutName dflags) stub_c_output_w
                ("#define IN_STG_CODE 0\n" ++ 
-                hc_header ++
-                "#include \"RtsAPI.h\"\n" ++
+                "#include \"Rts.h\"\n" ++
+                rts_includes ++
                 cplusplus_hdr)
                 cplusplus_ftr
-          -- we're adding the default hc_header to the stub file, but this
+          -- We're adding the default hc_header to the stub file, but this
           -- isn't really HC code, so we need to define IN_STG_CODE==0 to
           -- avoid the register variables etc. being enabled.