2 % (c) The GRASP/AQUA Project, Glasgow University, 1993-1998
4 \section{Code output phase}
7 module CodeOutput( codeOutput ) 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 qualified PrintJava
25 import DriverState ( v_HCHeader )
26 import TyCon ( TyCon )
28 import CoreSyn ( CoreBind )
29 import OccurAnal ( occurAnalyseBinds )
30 import StgSyn ( StgBinding )
31 import AbsCSyn ( AbstractC )
32 import PprAbsC ( dumpRealC, writeRealC )
33 import Module ( Module )
35 import ErrUtils ( dumpIfSet_dyn, showPass )
37 import CmdLineOpts ( DynFlags, HscLang(..), dopt_OutName )
45 %************************************************************************
49 %************************************************************************
52 codeOutput :: DynFlags
54 -> [TyCon] -- Local tycons
55 -> [CoreBind] -- Core bindings
56 -> [(StgBinding,[Id])] -- The STG program with SRTs
57 -> SDoc -- C stubs for foreign exported functions
58 -> SDoc -- Header file prototype for foreign exported functions
59 -> AbstractC -- Compiled abstract C
60 -> IO (Bool{-stub_h_exists-}, Bool{-stub_c_exists-})
61 codeOutput dflags mod_name tycons core_binds stg_binds
62 c_code h_code flat_abstractC
63 = -- You can have C (c_output) or assembly-language (ncg_output),
64 -- but not both. [Allowing for both gives a space leak on
65 -- flat_abstractC. WDP 94/10]
67 -- Dunno if the above comment is still meaningful now. JRS 001024.
69 do { showPass dflags "CodeOutput"
70 ; let filenm = dopt_OutName dflags
71 ; stub_names <- outputForeignStubs dflags c_code h_code
72 ; case dopt_HscLang dflags of
73 HscInterpreted -> return stub_names
74 HscAsm -> outputAsm dflags filenm flat_abstractC
76 HscC -> outputC dflags filenm flat_abstractC stub_names
80 outputJava dflags filenm mod_name tycons core_binds
83 panic "Java support not compiled into this ghc"
87 outputIlx dflags filenm mod_name tycons stg_binds
90 panic "ILX support not compiled into this ghc"
94 doOutput :: String -> (Handle -> IO ()) -> IO ()
95 doOutput filenm io_action
96 = (do handle <- openFile filenm WriteMode
99 `catch` (\err -> pprPanic "Failed to open or write code output file"
104 %************************************************************************
108 %************************************************************************
111 outputC dflags filenm flat_absC (stub_h_exists, _)
112 = do dumpIfSet_dyn dflags Opt_D_dump_realC "Real C" (dumpRealC flat_absC)
113 header <- readIORef v_HCHeader
114 doOutput filenm $ \ h -> do
117 hPutStrLn h ("#include \"" ++ (hscStubHOutName dflags) ++ "\"")
118 writeRealC h flat_absC
122 %************************************************************************
124 \subsection{Assembler}
126 %************************************************************************
129 outputAsm dflags filenm flat_absC
131 #ifndef OMIT_NATIVE_CODEGEN
133 = do ncg_uniqs <- mkSplitUniqSupply 'n'
134 let (stix_final, ncg_output_d) = _scc_ "NativeCodeGen"
135 nativeCodeGen flat_absC ncg_uniqs
136 dumpIfSet_dyn dflags Opt_D_dump_stix "Final stix code" stix_final
137 dumpIfSet_dyn dflags Opt_D_dump_asm "Asm code" ncg_output_d
138 _scc_ "OutputAsm" doOutput filenm ( \f -> printForAsm f ncg_output_d)
141 #else /* OMIT_NATIVE_CODEGEN */
143 = pprPanic "This compiler was built without a native code generator"
144 (text "Use -fvia-C instead")
150 %************************************************************************
154 %************************************************************************
158 outputJava dflags filenm mod tycons core_binds
159 = doOutput filenm (\ f -> printForUser f alwaysQualify pp_java)
160 -- User style printing for now to keep indentation
162 occ_anal_binds = occurAnalyseBinds core_binds
163 -- Make sure we have up to date dead-var information
164 java_code = javaGen mod [{- Should be imports-}] tycons occ_anal_binds
165 pp_java = PrintJava.compilationUnit java_code
170 %************************************************************************
174 %************************************************************************
178 outputIlx dflags filename mod tycons stg_binds
179 = doOutput filename (\ f -> printForC f pp_ilx)
181 pp_ilx = ilxGen mod tycons stg_binds
186 %************************************************************************
188 \subsection{Foreign import/export}
190 %************************************************************************
193 outputForeignStubs dflags c_code h_code
195 dumpIfSet_dyn dflags Opt_D_dump_foreign
196 "Foreign export header file" stub_h_output_d
199 <- outputForeignStubs_help (hscStubHOutName dflags) stub_h_output_w
200 ("#include \"HsFFI.h\"\n" ++ cplusplus_hdr) cplusplus_ftr
202 dumpIfSet_dyn dflags Opt_D_dump_foreign
203 "Foreign export stubs" stub_c_output_d
205 hc_header <- readIORef v_HCHeader
208 <- outputForeignStubs_help (hscStubCOutName dflags) stub_c_output_w
209 ("#define IN_STG_CODE 0\n" ++
211 "#include \"RtsAPI.h\"\n" ++
214 -- we're adding the default hc_header to the stub file, but this
215 -- isn't really HC code, so we need to define IN_STG_CODE==0 to
216 -- avoid the register variables etc. being enabled.
218 return (stub_h_file_exists, stub_c_file_exists)
220 -- C stubs for "foreign export"ed functions.
221 stub_c_output_d = pprCode CStyle c_code
222 stub_c_output_w = showSDoc stub_c_output_d
224 -- Header file protos for "foreign export"ed functions.
225 stub_h_output_d = pprCode CStyle h_code
226 stub_h_output_w = showSDoc stub_h_output_d
228 cplusplus_hdr = "#ifdef __cplusplus\nextern \"C\" {\n#endif\n"
229 cplusplus_ftr = "#ifdef __cplusplus\n}\n#endif\n"
231 -- Don't use doOutput for dumping the f. export stubs
232 -- since it is more than likely that the stubs file will
233 -- turn out to be empty, in which case no file should be created.
234 outputForeignStubs_help fname "" header footer = return False
235 outputForeignStubs_help fname doc_str header footer
236 = do writeFile fname (header ++ doc_str ++ '\n':footer ++ "\n")