\begin{code}
-{-# OPTIONS -optc-DNON_POSIX_SOURCE -#include "Linker.h" #-}
+{-# OPTIONS -fno-cse #-}
+-- -fno-cse is needed for GLOBAL_VAR's to behave properly
module Linker ( HValue, getHValue, showLinkerState,
linkExpr, unload, withExtendedLinkEnv,
import DynFlags
import BasicTypes
import Outputable
-import PackageConfig
import Panic
import Util
import StaticFlags
import ErrUtils
-import DriverPhases
import SrcLoc
import qualified Maybes
import UniqSet
import System.IO
import System.Directory
-import Control.Exception
-import Data.Maybe
+import Distribution.Package hiding (depends, PackageId)
+
+import Exception
\end{code}
getHValue hsc_env name = do
when (isExternalName name) $ do
ok <- linkDependencies hsc_env noSrcSpan [nameModule name]
- when (failed ok) $ throwDyn (ProgramError "")
+ when (failed ok) $ ghcError (ProgramError "")
pls <- readIORef v_PersistentLinkerState
lookupName (closure_env pls) name
-- | Temporarily extend the linker state.
-withExtendedLinkEnv :: [(Name,HValue)] -> IO a -> IO a
+withExtendedLinkEnv :: (MonadIO m, ExceptionMonad m) =>
+ [(Name,HValue)] -> m a -> m a
withExtendedLinkEnv new_env action
- = bracket_ set_new_env
- reset_old_env
- action
+ = gbracket set_new_env
+ (\_ -> reset_old_env)
+ (\_ -> action)
where set_new_env = do
- pls <- readIORef v_PersistentLinkerState
+ pls <- liftIO $ readIORef v_PersistentLinkerState
let new_closure_env = extendClosureEnv (closure_env pls) new_env
new_pls = pls { closure_env = new_closure_env }
- writeIORef v_PersistentLinkerState new_pls
+ liftIO $ writeIORef v_PersistentLinkerState new_pls
return ()
-- Remember that the linker state might be side-effected
-- lose those changes (we might have linked a new module or
-- package), so the reset action only removes the names we
-- added earlier.
- reset_old_env = do
+ reset_old_env = liftIO $ do
modifyIORef v_PersistentLinkerState $ \pls ->
let cur = closure_env pls
new = delListFromNameEnv cur (map fst new_env)
; ok <- resolveObjs
; if succeeded ok then maybePutStrLn dflags "done"
- else throwDyn (InstallationError "linking extra libraries/objects failed")
+ else ghcError (ProgramError "linking extra libraries/objects failed")
}}
classifyLdInput :: FilePath -> IO (Maybe LibrarySpec)
where
preloadFailed :: String -> [String] -> LibrarySpec -> IO ()
preloadFailed sys_errmsg paths spec
- = do maybePutStr dflags
- ("failed.\nDynamic linker error message was:\n "
- ++ sys_errmsg ++ "\nWhilst trying to load: "
- ++ showLS spec ++ "\nDirectories to search are:\n"
- ++ unlines (map (" "++) paths) )
- give_up
+ = do maybePutStr dflags "failed.\n"
+ ghcError $
+ CmdLineError (
+ "user specified .o/.so/.DLL could not be loaded ("
+ ++ sys_errmsg ++ ")\nWhilst trying to load: "
+ ++ showLS spec ++ "\nAdditional directories searched:"
+ ++ (if null paths then " (none)" else
+ (concat (intersperse "\n" (map (" "++) paths)))))
-- Not interested in the paths in the static case.
preload_static _paths name
= do b <- doesFileExist name
if not b then return False
else loadObj name >> return True
-
- give_up = throwDyn $
- CmdLineError "user specified .o/.so/.DLL could not be loaded."
\end{code}
-- Link the packages and modules required
; ok <- linkDependencies hsc_env span needed_mods
; if failed ok then
- throwDyn (ProgramError "")
+ ghcError (ProgramError "")
else do {
-- Link the expression itself
-- by default, so we can safely ignore them here.
dieWith :: SrcSpan -> Message -> IO a
-dieWith span msg = throwDyn (ProgramError (showSDoc (mkLocMessage span msg)))
+dieWith span msg = ghcError (ProgramError (showSDoc (mkLocMessage span msg)))
checkNonStdWay :: DynFlags -> SrcSpan -> IO (Maybe String)
link_boot_mod_error mod =
- throwDyn (ProgramError (showSDoc (
+ ghcError (ProgramError (showSDoc (
text "module" <+> ppr mod <+>
text "cannot be linked; it is only available as a boot module")))
get_linkable maybe_normal_osuf mod_name -- A home-package module
| Just mod_info <- lookupUFM hpt mod_name
- = ASSERT(isJust (hm_linkable mod_info))
- adjust_linkable (fromJust (hm_linkable mod_info))
+ = adjust_linkable (Maybes.expectJust "getLinkDeps" (hm_linkable mod_info))
| otherwise
= do -- It's not in the HPT because we are in one shot mode,
-- so use the Finder to get a ModLocation...
pls1 = pls { objs_loaded = objs_loaded' }
unlinkeds = concatMap linkableUnlinked new_objs
- mapM loadObj (map nameOfObject unlinkeds)
+ mapM_ loadObj (map nameOfObject unlinkeds)
-- Link the all together
ok <- resolveObjs
-- of DLL handles that rts/Linker.c maintains, and that in turn is
-- used by lookupSymbol. So we must call addDLL for each library
-- just to get the DLL handle into the list.
-partOfGHCi :: [String]
+partOfGHCi :: [PackageName]
partOfGHCi
| isWindowsTarget || isDarwinTarget = []
- | otherwise = [ "base", "haskell98", "template-haskell", "editline" ]
+ | otherwise = map PackageName
+ ["base", "haskell98", "template-haskell", "editline"]
showLS :: LibrarySpec -> String
showLS (Object nm) = "(static) " ++ nm
; return (new_pkg : pkgs') }
| otherwise
- = throwDyn (CmdLineError ("unknown package: " ++ packageIdString new_pkg))
+ = ghcError (CmdLineError ("unknown package: " ++ packageIdString new_pkg))
linkPackage :: DynFlags -> PackageConfig -> IO ()
maybePutStr dflags ("Loading package " ++ display (package pkg) ++ " ... ")
-- See comments with partOfGHCi
- when (pkgName (package pkg) `notElem` partOfGHCi) $ do
+ when (packageName pkg `notElem` partOfGHCi) $ do
loadFrameworks pkg
-- When a library A needs symbols from a library B, the order in
-- extra_libraries/extra_ld_opts is "-lA -lB", because that's the
maybePutStr dflags "linking ... "
ok <- resolveObjs
if succeeded ok then maybePutStrLn dflags "done."
- else throwDyn (InstallationError ("unable to load package `" ++ display (package pkg) ++ "'"))
+ else ghcError (InstallationError ("unable to load package `" ++ display (package pkg) ++ "'"))
load_dyn :: [FilePath] -> FilePath -> IO ()
load_dyn dirs dll = do r <- loadDynamic dirs dll
case r of
Nothing -> return ()
- Just err -> throwDyn (CmdLineError ("can't load .so/.DLL for: "
+ Just err -> ghcError (CmdLineError ("can't load .so/.DLL for: "
++ dll ++ " (" ++ err ++ ")" ))
loadFrameworks :: InstalledPackageInfo_ ModuleName -> IO ()
load fw = do r <- loadFramework fw_dirs fw
case r of
Nothing -> return ()
- Just err -> throwDyn (CmdLineError ("can't load framework: "
+ Just err -> ghcError (CmdLineError ("can't load framework: "
++ fw ++ " (" ++ err ++ ")" ))
-- Try to find an object file for a given library in the given paths.
Nothing ->
do { mb_lib_path <- findFile mk_dyn_lib_path dirs
; case mb_lib_path of
- Just _ -> return (DLL (lib ++ "-ghc" ++ cProjectVersion))
+ Just _ -> return (DLL dyn_lib_name)
Nothing -> return (DLL lib) }} -- We assume
| otherwise
-- When the GHC package was compiled as dynamic library (=__PIC__ set),
Nothing -> return (DLL lib) }} -- We assume
where
mk_obj_path dir = dir </> (lib <.> "o")
- mk_dyn_lib_path dir = dir </> mkSOName (lib ++ "-ghc" ++ cProjectVersion)
+ dyn_lib_name = lib ++ "-ghc" ++ cProjectVersion
+ mk_dyn_lib_path dir = dir </> mkSOName dyn_lib_name
-- ----------------------------------------------------------------------------
-- Loading a dyanmic library (dlopen()-ish on Unix, LoadLibrary-ish on Win32)
-- name. They are searched for in different paths than normal libraries.
loadFramework :: [FilePath] -> FilePath -> IO (Maybe String)
loadFramework extraPaths rootname
- = do { either_dir <- Control.Exception.try getHomeDirectory
+ = do { either_dir <- tryIO getHomeDirectory
; let homeFrameworkPath = case either_dir of
Left _ -> []
Right dir -> [dir ++ "/Library/Frameworks"]