2 % (c) The GRASP/AQUA Project, Glasgow University, 1993-1998
4 \section{Code output phase}
7 module CodeOutput( codeOutput, outputForeignStubs ) where
9 #include "HsVersions.h"
11 #ifndef OMIT_NATIVE_CODEGEN
12 import UniqSupply ( mkSplitUniqSupply )
13 import AsmCodeGen ( nativeCodeGen )
17 import IlxGen ( ilxGen )
21 import JavaGen ( javaGen )
22 import OccurAnal ( occurAnalyseBinds )
23 import qualified PrintJava
24 import OccurAnal ( occurAnalyseBinds )
27 import Packages ( PackageConfig(name), packageNameString )
28 import DriverState ( getExplicitPackagesAnd, getPackageCIncludes )
29 import FastString ( unpackFS )
30 import AbsCSyn ( AbstractC )
31 import PprAbsC ( dumpRealC, writeRealC )
32 import HscTypes ( ModGuts(..), ModGuts, ForeignStubs(..),
33 typeEnvTyCons, Dependencies(..) )
35 import ErrUtils ( dumpIfSet_dyn, showPass )
37 import Pretty ( Mode(..), printDoc )
38 import CmdLineOpts ( DynFlags, HscLang(..), dopt_OutName )
44 %************************************************************************
48 %************************************************************************
51 codeOutput :: DynFlags
53 -> AbstractC -- Compiled abstract C
54 -> IO (Bool{-stub_h_exists-}, Bool{-stub_c_exists-})
57 (ModGuts {mg_module = mod_name,
59 mg_foreign = foreign_stubs,
61 mg_binds = core_binds})
64 tycons = typeEnvTyCons type_env
66 -- You can have C (c_output) or assembly-language (ncg_output),
67 -- but not both. [Allowing for both gives a space leak on
68 -- flat_abstractC. WDP 94/10]
70 -- Dunno if the above comment is still meaningful now. JRS 001024.
72 do { showPass dflags "CodeOutput"
73 ; let filenm = dopt_OutName dflags
74 ; stubs_exist <- outputForeignStubs dflags foreign_stubs
75 ; case dopt_HscLang dflags of {
76 HscInterpreted -> return ();
77 HscAsm -> outputAsm dflags filenm flat_abstractC;
78 HscC -> outputC dflags filenm flat_abstractC stubs_exist
82 outputJava dflags filenm mod_name tycons core_binds;
84 panic "Java support not compiled into this ghc";
88 outputIlx dflags filenm mod_name tycons stg_binds;
90 panic "ILX support not compiled into this ghc";
96 doOutput :: String -> (Handle -> IO ()) -> IO ()
97 doOutput filenm io_action = bracket (openFile filenm WriteMode) hClose io_action
101 %************************************************************************
105 %************************************************************************
108 outputC dflags filenm flat_absC
109 (stub_h_exists, _) dependencies (ForeignStubs _ _ ffi_decl_headers _ )
110 = do dumpIfSet_dyn dflags Opt_D_dump_realC "Real C" (dumpRealC flat_absC)
112 -- figure out which header files to #include in the generated .hc file:
114 -- * extra_includes from packages
115 -- * -#include options from the cmdline and OPTIONS pragmas
116 -- * the _stub.h file, if there is one.
118 let packages = dep_pkgs dependencies
119 pkg_configs <- getExplicitPackagesAnd packages
120 let pkg_names = map name pkg_configs
122 c_includes <- getPackageCIncludes pkg_configs
123 let cmdline_includes = cmdlineHcIncludes dflags -- -#include options
125 all_headers = c_includes
126 ++ reverse cmdline_includes
127 ++ reverse (map unpackFS ffi_decl_headers)
130 let cc_injects = unlines (map mk_include all_headers)
133 '"':_{-"-} -> "#include "++h_file
134 '<':_ -> "#include "++h_file
135 _ -> "#include \""++h_file++"\""
137 doOutput filenm $ \ h -> do
138 hPutStr h ("/* GHC_PACKAGES " ++ unwords pkg_names ++ "\n*/\n")
141 hPutStrLn h ("#include \"" ++ (hscStubHOutName dflags) ++ "\"")
142 writeRealC h flat_absC
146 %************************************************************************
148 \subsection{Assembler}
150 %************************************************************************
153 outputAsm dflags filenm flat_absC
155 #ifndef OMIT_NATIVE_CODEGEN
157 = do ncg_uniqs <- mkSplitUniqSupply 'n'
158 let (stix_final, ncg_output_d) = _scc_ "NativeCodeGen"
159 nativeCodeGen flat_absC ncg_uniqs
160 dumpIfSet_dyn dflags Opt_D_dump_stix "Final stix code" stix_final
161 dumpIfSet_dyn dflags Opt_D_dump_asm "Asm code" (docToSDoc ncg_output_d)
162 _scc_ "OutputAsm" doOutput filenm $
163 \f -> printDoc LeftMode f ncg_output_d
166 #else /* OMIT_NATIVE_CODEGEN */
168 = pprPanic "This compiler was built without a native code generator"
169 (text "Use -fvia-C instead")
175 %************************************************************************
179 %************************************************************************
183 outputJava dflags filenm mod tycons core_binds
184 = doOutput filenm (\ f -> printForUser f alwaysQualify pp_java)
185 -- User style printing for now to keep indentation
187 occ_anal_binds = occurAnalyseBinds core_binds
188 -- Make sure we have up to date dead-var information
189 java_code = javaGen mod [{- Should be imports-}] tycons occ_anal_binds
190 pp_java = PrintJava.compilationUnit java_code
195 %************************************************************************
199 %************************************************************************
203 outputIlx dflags filename mod tycons stg_binds
204 = doOutput filename (\ f -> printForC f pp_ilx)
206 pp_ilx = ilxGen mod tycons stg_binds
211 %************************************************************************
213 \subsection{Foreign import/export}
215 %************************************************************************
218 outputForeignStubs :: DynFlags -> ForeignStubs
219 -> IO (Bool, -- Header file created
220 Bool) -- C file created
221 outputForeignStubs dflags NoStubs = return (False, False)
222 outputForeignStubs dflags (ForeignStubs h_code c_code _ _)
224 dumpIfSet_dyn dflags Opt_D_dump_foreign
225 "Foreign export header file" stub_h_output_d
228 <- outputForeignStubs_help (hscStubHOutName dflags) stub_h_output_w
229 ("#include \"HsFFI.h\"\n" ++ cplusplus_hdr) cplusplus_ftr
231 dumpIfSet_dyn dflags Opt_D_dump_foreign
232 "Foreign export stubs" stub_c_output_d
235 <- outputForeignStubs_help (hscStubCOutName dflags) stub_c_output_w
236 ("#define IN_STG_CODE 0\n" ++
237 "#include \"RtsAPI.h\"\n" ++
240 -- We're adding the default hc_header to the stub file, but this
241 -- isn't really HC code, so we need to define IN_STG_CODE==0 to
242 -- avoid the register variables etc. being enabled.
244 return (stub_h_file_exists, stub_c_file_exists)
246 -- C stubs for "foreign export"ed functions.
247 stub_c_output_d = pprCode CStyle c_code
248 stub_c_output_w = showSDoc stub_c_output_d
250 -- Header file protos for "foreign export"ed functions.
251 stub_h_output_d = pprCode CStyle h_code
252 stub_h_output_w = showSDoc stub_h_output_d
254 cplusplus_hdr = "#ifdef __cplusplus\nextern \"C\" {\n#endif\n"
255 cplusplus_ftr = "#ifdef __cplusplus\n}\n#endif\n"
257 -- Don't use doOutput for dumping the f. export stubs
258 -- since it is more than likely that the stubs file will
259 -- turn out to be empty, in which case no file should be created.
260 outputForeignStubs_help fname "" header footer = return False
261 outputForeignStubs_help fname doc_str header footer
262 = do writeFile fname (header ++ doc_str ++ '\n':footer ++ "\n")