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%
% (c) The GRASP/AQUA Project, Glasgow University, 1993-1998
%
\section{Code output phase}
\begin{code}
module CodeOutput( codeOutput, outputForeignStubs ) where
#include "HsVersions.h"
#ifndef OMIT_NATIVE_CODEGEN
import UniqSupply ( mkSplitUniqSupply )
import AsmCodeGen ( nativeCodeGen )
#endif
#ifdef ILX
import IlxGen ( ilxGen )
#endif
#ifdef JAVA
import JavaGen ( javaGen )
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 CmdLineOpts
import ErrUtils ( dumpIfSet_dyn, showPass )
import Outputable
import Pretty ( Mode(..), printDoc )
import CmdLineOpts ( DynFlags, HscLang(..), dopt_OutName )
import DATA_IOREF ( readIORef )
import Monad ( when )
import IO
\end{code}
%************************************************************************
%* *
\subsection{Steering}
%* *
%************************************************************************
\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
-> 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),
-- 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"
; 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
HscJava ->
#ifdef JAVA
outputJava dflags filenm mod_name tycons core_binds
>> return stub_names
#else
panic "Java support not compiled into this ghc"
#endif
HscILX ->
#ifdef ILX
outputIlx dflags filenm mod_name tycons stg_binds
>> return stub_names
#else
panic "ILX support not compiled into this ghc"
#endif
}
doOutput :: String -> (Handle -> IO ()) -> IO ()
doOutput filenm io_action = bracket (openFile filenm WriteMode) hClose io_action
\end{code}
%************************************************************************
%* *
\subsection{C}
%* *
%************************************************************************
\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
doOutput filenm $ \ h -> do
hPutStr h header
when stub_h_exists $
hPutStrLn h ("#include \"" ++ (hscStubHOutName dflags) ++ "\"")
writeRealC h flat_absC
\end{code}
%************************************************************************
%* *
\subsection{Assembler}
%* *
%************************************************************************
\begin{code}
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
dumpIfSet_dyn dflags Opt_D_dump_asm "Asm code" (docToSDoc ncg_output_d)
_scc_ "OutputAsm" doOutput filenm $
\f -> printDoc LeftMode f ncg_output_d
where
#else /* OMIT_NATIVE_CODEGEN */
= pprPanic "This compiler was built without a native code generator"
(text "Use -fvia-C instead")
#endif
\end{code}
%************************************************************************
%* *
\subsection{Java}
%* *
%************************************************************************
\begin{code}
#ifdef JAVA
outputJava dflags filenm mod tycons core_binds
= doOutput filenm (\ f -> printForUser f alwaysQualify pp_java)
-- User style printing for now to keep indentation
where
occ_anal_binds = occurAnalyseBinds core_binds
-- Make sure we have up to date dead-var information
java_code = javaGen mod [{- Should be imports-}] tycons occ_anal_binds
pp_java = PrintJava.compilationUnit java_code
#endif
\end{code}
%************************************************************************
%* *
\subsection{Ilx}
%* *
%************************************************************************
\begin{code}
#ifdef ILX
outputIlx dflags filename mod tycons stg_binds
= doOutput filename (\ f -> printForC f pp_ilx)
where
pp_ilx = ilxGen mod tycons stg_binds
#endif
\end{code}
%************************************************************************
%* *
\subsection{Foreign import/export}
%* *
%************************************************************************
\begin{code}
outputForeignStubs dflags c_code h_code
= do
dumpIfSet_dyn dflags Opt_D_dump_foreign
"Foreign export header file" stub_h_output_d
stub_h_file_exists
<- outputForeignStubs_help (hscStubHOutName dflags) stub_h_output_w
("#include \"HsFFI.h\"\n" ++ cplusplus_hdr) cplusplus_ftr
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" ++
cplusplus_hdr)
cplusplus_ftr
-- 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.
return (stub_h_file_exists, stub_c_file_exists)
where
-- C stubs for "foreign export"ed functions.
stub_c_output_d = pprCode CStyle c_code
stub_c_output_w = showSDoc stub_c_output_d
-- Header file protos for "foreign export"ed functions.
stub_h_output_d = pprCode CStyle h_code
stub_h_output_w = showSDoc stub_h_output_d
cplusplus_hdr = "#ifdef __cplusplus\nextern \"C\" {\n#endif\n"
cplusplus_ftr = "#ifdef __cplusplus\n}\n#endif\n"
-- Don't use doOutput for dumping the f. export stubs
-- since it is more than likely that the stubs file will
-- turn out to be empty, in which case no file should be created.
outputForeignStubs_help fname "" header footer = return False
outputForeignStubs_help fname doc_str header footer
= do writeFile fname (header ++ doc_str ++ '\n':footer ++ "\n")
return True
\end{code}
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