[project @ 1999-05-10 08:23:55 by sof]

Added a DllMain() which starts up RTS upon DLL load.

ghc/includes/Stg.h

 /* -----------------------------------------------------------------------------
- * $Id: Stg.h,v 1.10 1999/05/04 08:52:22 sof Exp $
+ * $Id: Stg.h,v 1.11 1999/05/10 08:23:57 sof Exp $
  *
  * (c) The GHC Team, 1998-1999
  *
@@ -119,7 +119,7 @@ void _stgAssert (char *, unsigned int);
 #include "Hooks.h"
 
 /* Misc stuff without a home */
-#ifdef BUILDING_RTS_DLL
+#if defined(ENABLE_WIN32_DLL_SUPPOT) && !defined(COMPILING_RTS)
 extern DLLIMPORT char **prog_argv;	/* so we can get at these from Haskell */
 extern DLLIMPORT int    prog_argc;
 #else

ghc/rts/Main.c

 /* -----------------------------------------------------------------------------
- * $Id: Main.c,v 1.6 1999/03/03 19:20:42 sof Exp $
+ * $Id: Main.c,v 1.7 1999/05/10 08:23:55 sof Exp $
  *
  * (c) The GHC Team 1998-1999
  *
@@ -29,21 +29,28 @@
 #include "LLC.h"
 #endif
 
+#ifdef HAVE_WINDOWS_H
+#include <windows.h>
+#endif
+
+
+#ifndef ENABLE_WIN32_DLL_SUPPORT
+
 /* Hack: we assume that we're building a batch-mode system unless 
  * INTERPRETER is set
  */
-#ifndef INTERPRETER /* Hack */
+# ifndef INTERPRETER /* Hack */
 int main(int argc, char *argv[])
 {
     SchedulerStatus status;
     startupHaskell(argc,argv);
 
-#ifndef PAR
+#  ifndef PAR
     MainTSO = createIOThread(stg_max(BLOCK_SIZE_W,
 				     RtsFlags.GcFlags.initialStkSize),
 			     (StgClosure *)&mainIO_closure);
     status = schedule(MainTSO,NULL);
-#else
+#  else
     if (IAmMainThread == rtsTrue) {
     /*Just to show we're alive */
       fprintf(stderr, "Main Thread Started ...\n");
@@ -56,7 +63,7 @@ int main(int argc, char *argv[])
       WaitForPEOp(PP_FINISH,SysManTask);
       exit(EXIT_SUCCESS);
     }
-#endif /* PAR */
+#  endif /* PAR */
     switch (status) {
     case AllBlocked:
       barf("Scheduler stopped, all threads blocked");
@@ -72,4 +79,32 @@ int main(int argc, char *argv[])
     shutdownHaskell();
     stg_exit(EXIT_SUCCESS);
 }
-#endif /* BATCH_MODE */
+# endif /* BATCH_MODE */
+
+#else   /* !ENABLE_WIN32_DLL_SUPPORT */
+
+static char* args[] = { "ghcRts" };
+
+BOOL
+WINAPI
+DllMain ( HINSTANCE hInstance
+        , DWORD reason
+	, LPVOID reserved
+	)
+{
+  /*
+    ToDo: let the user configure RTS options to use
+          via the registry.
+   */
+  switch (reason) {
+  case DLL_PROCESS_ATTACH:
+    startupHaskell(args,1);
+    /* ToDo: gracefully handle startupHaskell() failures.. */
+    return TRUE;
+  case DLL_PROCESS_DETACH:
+    shutdownHaskell();
+  }
+  return TRUE;
+}
+
+#endif /* !ENABLE_WIN32_DLL_SUPPORT */

ghc/rts/Makefile

 #-----------------------------------------------------------------------------
-# $Id: Makefile,v 1.9 1999/05/04 10:19:17 sof Exp $
+# $Id: Makefile,v 1.10 1999/05/10 08:23:55 sof Exp $
 
 #  This is the Makefile for the runtime-system stuff.
 #  This stuff is written in C (and cannot be written in Haskell).
@@ -88,14 +88,21 @@ unexport CC
 # 
 ifeq "$(way)" "dll"
 DLL_NAME          = HSrts.dll
-SRC_BLD_DLL_OPTS += --def HSrts.def -lwinmm -lHS_imp -lgmp -L. -Lgmp
+SRC_BLD_DLL_OPTS += --def HSrts.def -lwinmm -lHS_imp_stub -lgmp -L. -Lgmp
 
-LIBOBJS := $(filter-out Main.$(way_)o, $(LIBOBJS))
+#
+# Need an import library containing the symbols the RTS uses from the Prelude.
+# So, to avoid bootstrapping trouble, we build one containing just the syms
+# we need. Weirdly named to avoid clashing later on when compiling the contents
+# of ghc/lib/..
+#
+# Note: if you do change the name of the Prelude DLL, the "--dllname <nm>.dll"
+# below will need to be updated as well.
 
-$(DLL_NAME) :: libHS_imp.a
+$(DLL_NAME) :: libHS_imp_stub.a
 
-libHS_imp.a :
-	dlltool --output-lib libHS_imp.a --def HSprel.def --dllname HSprel.dll
+libHS_imp_stub.a :
+	dlltool --output-lib libHS_imp_stub.a --def HSprel.def --dllname HSprel.dll
 
 # It's not included in the DLL, but we need to compile it up separately.
 all :: Main.dll_o

ghc/rts/RtsStartup.c

 /* -----------------------------------------------------------------------------
- * $Id: RtsStartup.c,v 1.11 1999/05/04 10:19:19 sof Exp $
+ * $Id: RtsStartup.c,v 1.12 1999/05/10 08:23:56 sof Exp $
  *
  * (c) The GHC Team, 1998-1999
  *
@@ -35,7 +35,8 @@
  */
 struct RTS_FLAGS RtsFlags;
 
-extern void startupHaskell(int argc, char *argv[])
+void
+startupHaskell(int argc, char *argv[])
 {
     static int rts_has_started_up = 0;
     int i;
@@ -87,7 +88,7 @@ extern void startupHaskell(int argc, char *argv[])
     prog_argc = argc;
     prog_argv = argv;
 
-#if defined(PAR)
+#ifdef PAR
    /* Initialise the parallel system -- before initHeap! */
     initParallelSystem();
    /* And start GranSim profiling if required: omitted for now
@@ -122,8 +123,6 @@ extern void startupHaskell(int argc, char *argv[])
        filling in the tables with references to where the
        static info tables have been loaded inside the running
        process.
-       
-       Ditto for Bool closure tbl.
     */
 #ifdef ENABLE_WIN32_DLL_SUPPORT
     for(i=0;i<=255;i++)