import qualified Outputable
import Panic ( panic )
+import DynFlags
-- The most important function here is cmmMakeDynamicReference.
deriving(Eq)
cmmMakeDynamicReference
- :: Monad m => (CLabel -> m ()) -- a monad & a function
+ :: Monad m => DynFlags
+ -> (CLabel -> m ()) -- a monad & a function
-- used for recording imported symbols
-> ReferenceKind -- whether this is the target of a jump
-> CLabel -- the label
-> m CmmExpr
-cmmMakeDynamicReference addImport referenceKind lbl
+cmmMakeDynamicReference dflags addImport referenceKind lbl
| Just _ <- dynamicLinkerLabelInfo lbl
= return $ CmmLit $ CmmLabel lbl -- already processed it, pass through
- | otherwise = case howToAccessLabel referenceKind lbl of
+ | otherwise = case howToAccessLabel dflags referenceKind lbl of
AccessViaStub -> do
let stub = mkDynamicLinkerLabel CodeStub lbl
addImport stub
| AccessViaSymbolPtr
| AccessDirectly
-howToAccessLabel :: ReferenceKind -> CLabel -> LabelAccessStyle
+howToAccessLabel :: DynFlags -> ReferenceKind -> CLabel -> LabelAccessStyle
#if mingw32_TARGET_OS
-- Windows
-- are imported from a DLL via an __imp_* label.
-- There are no stubs for imported code.
-howToAccessLabel _ lbl | labelDynamic lbl = AccessViaSymbolPtr
- | otherwise = AccessDirectly
+howToAccessLabel dflags _ lbl | labelDynamic (thisPackage dflags) lbl = AccessViaSymbolPtr
+ | otherwise = AccessDirectly
#elif darwin_TARGET_OS
-- Mach-O (Darwin, Mac OS X)
--
-- It is always possible to access something indirectly,
-- even when it's not necessary.
-howToAccessLabel DataReference lbl
+howToAccessLabel dflags DataReference lbl
-- data access to a dynamic library goes via a symbol pointer
- | labelDynamic lbl = AccessViaSymbolPtr
+ | labelDynamic (thisPackage dflags) lbl = AccessViaSymbolPtr
#if !x86_64_TARGET_ARCH
-- when generating PIC code, all cross-module data references must
-- dyld code stubs don't work for tailcalls because the
-- stack alignment is only right for regular calls.
-- Therefore, we have to go via a symbol pointer:
-howToAccessLabel JumpReference lbl
- | labelDynamic lbl
+howToAccessLabel dflags JumpReference lbl
+ | labelDynamic (thisPackage dflags) lbl
= AccessViaSymbolPtr
#endif
-howToAccessLabel _ lbl
+howToAccessLabel dflags _ lbl
#if !x86_64_TARGET_ARCH
-- Code stubs are the usual method of choice for imported code;
-- not needed on x86_64 because Apple's new linker, ld64, generates
-- them automatically.
- | labelDynamic lbl
+ | labelDynamic (thisPackage dflags) lbl
= AccessViaStub
#endif
| otherwise
#elif linux_TARGET_OS && powerpc64_TARGET_ARCH
-- ELF PPC64 (powerpc64-linux), AIX, MacOS 9, BeOS/PPC
-howToAccessLabel DataReference lbl = AccessViaSymbolPtr
-howToAccessLabel _ lbl = AccessDirectly -- actually, .label instead of label
+howToAccessLabel _ DataReference lbl = AccessViaSymbolPtr
+howToAccessLabel _ _ lbl = AccessDirectly -- actually, .label instead of label
#elif linux_TARGET_OS
-- ELF (Linux)
-- from position independent code. It is also required from the main program
-- when dynamic libraries containing Haskell code are used.
-howToAccessLabel _ lbl
+howToAccessLabel _ _ lbl
-- no PIC -> the dynamic linker does everything for us;
-- if we don't dynamically link to Haskell code,
-- it actually manages to do so without messing thins up.
| not opt_PIC && opt_Static = AccessDirectly
-howToAccessLabel DataReference lbl
+howToAccessLabel dflags DataReference lbl
-- A dynamic label needs to be accessed via a symbol pointer.
- | labelDynamic lbl = AccessViaSymbolPtr
+ | labelDynamic (thisPackage dflags) lbl = AccessViaSymbolPtr
#if powerpc_TARGET_ARCH
-- For PowerPC32 -fPIC, we have to access even static data
-- via a symbol pointer (see below for an explanation why
-- (AccessDirectly, because we get an implicit symbol stub)
-- and calling functions from PIC code on non-i386 platforms (via a symbol stub)
-howToAccessLabel CallReference lbl
- | labelDynamic lbl && not opt_PIC
+howToAccessLabel dflags CallReference lbl
+ | labelDynamic (thisPackage dflags) lbl && not opt_PIC
= AccessDirectly
#if !i386_TARGET_ARCH
- | labelDynamic lbl && opt_PIC
+ | labelDynamic (thisPackage dflags) lbl && opt_PIC
= AccessViaStub
#endif
-howToAccessLabel _ lbl
- | labelDynamic lbl = AccessViaSymbolPtr
+howToAccessLabel dflags _ lbl
+ | labelDynamic (thisPackage dflags) lbl = AccessViaSymbolPtr
| otherwise = AccessDirectly
#else
--
-- all other platforms
--
-howToAccessLabel _ _
+howToAccessLabel _ _ _
| not opt_PIC = AccessDirectly
| otherwise = panic "howToAccessLabel: PIC not defined for this platform"
#endif