grt: extract grt-dynload from grt-cvpi

4 files changed, 78 insertions, 59 deletions

diff --git a/src/grt/Makefile.inc b/src/grt/Makefile.inc
index 70e7c8ca6..89f0675ad 100644
--- a/src/grt/Makefile.inc
+++ b/src/grt/Makefile.inc
@@ -71,7 +71,7 @@ GRT_FST_OBJS := fstapi.o lz4.o fastlz.o
 
 # Additionnal object files (C or asm files).
 GRT_BASE_C_OBJS:=$(GRT_TARGET_OBJS) grt-cbinding.o
-GRT_ADD_OBJS:=$(GRT_BASE_C_OBJS) grt-cvpi.o $(GRT_FST_OBJS)
+GRT_ADD_OBJS:=$(GRT_BASE_C_OBJS) grt-cvpi.o grt-dynload.o $(GRT_FST_OBJS)
 GRT_ADD_SHOBJS:=$(patsubst %, pic/%, $(GRT_BASE_C_OBJS))
 
 # Source files create by grt.
@@ -164,6 +164,12 @@ grt-cvpi.o: $(GRTSRCDIR)/grt-cvpi.c
 pic/grt-cvpi.o: $(GRTSRCDIR)/grt-cvpi.c
 	$(GRT_C_COMPILE_PIC)
 
+grt-dynload.o: $(GRTSRCDIR)/grt-dynload.c
+	$(GRT_C_COMPILE)
+
+pic/grt-dynload.o: $(GRTSRCDIR)/grt-dynload.c
+	$(GRT_C_COMPILE_PIC)
+
 grt-cthreads.o: $(GRTSRCDIR)/grt-cthreads.c
 	$(GRT_C_COMPILE)
 
diff --git a/src/grt/grt-cvpi.c b/src/grt/grt-cvpi.c
index 2bf23364b..17f0e75af 100644
--- a/src/grt/grt-cvpi.c
+++ b/src/grt/grt-cvpi.c
@@ -32,6 +32,7 @@
 
 #include "vpi_user.h"
 #include "vpi_thunk.h"
+#include "grt-dynload.h"
 
 /* Extension of a shared library.  */
 #if defined (WINNT)
@@ -76,59 +77,6 @@ static vpi_thunk __ghdl_vpi_thunk_v1 =
 
 //-----------------------------------------------------------------------------
 // VPI module load & startup
-static void * module_open (const char *path);
-static void * module_symbol (void *handle, const char *symbol);
-static const char *module_error (void);
-
-#if defined(__WIN32__)
-#include <windows.h>
-static void *
-module_open (const char *path)
-{
-  return (void *)LoadLibrary (path);
-}
-
-static void *
-module_symbol (void *handle, const char *symbol)
-{
-  return (void *)GetProcAddress ((HMODULE)handle, symbol);
-}
-
-static const char *
-module_error (void)
-{
-  static char msg[256];
-
-  FormatMessage
-    (FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
-     NULL,
-     GetLastError (),
-     MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
-     (LPTSTR) &msg,
-     sizeof (msg) - 1,
-     NULL);
-  return msg;
-}
-#else
-#include <dlfcn.h>
-static void *
-module_open (const char *path)
-{
-  return dlopen (path, RTLD_LAZY);
-}
-
-static void *
-module_symbol (void *handle, const char *symbol)
-{
-  return dlsym (handle, symbol);
-}
-
-static const char *
-module_error (void)
-{
-  return dlerror ();
-}
-#endif
 
 #if defined (__APPLE__)
 /* On Darwin: look in rpath.  */
@@ -153,11 +101,11 @@ loadVpiModule (const char* modulename)
      - exec path\lib => see windows_default_path
   */
 
-  vpimod = module_open (modulename);
+  vpimod = grt_dynload_open (modulename);
 
   if (vpimod == NULL)
     {
-      const char *msg = module_error ();
+      const char *msg = grt_dynload_error ();
 
       fprintf (stderr, "%s\n", msg == NULL ? "unknown dlopen error" : msg);
       return -1;
@@ -167,14 +115,15 @@ loadVpiModule (const char* modulename)
      No need to load the library several times.  */
   if (libghdlvpi_mod == NULL)
     {
-      libghdlvpi_mod = module_open (libghdlvpi_name);
+      libghdlvpi_mod = grt_dynload_open (libghdlvpi_name);
       if (libghdlvpi_mod != NULL)
 	{
 	  vpi_thunk **vpi_thunk_ptr;
 
 	  for (i = 0; i < 2; i++)
 	    {
-	      vpi_thunk_ptr = module_symbol (libghdlvpi_mod, &"_VPI_THUNK"[i]);
+	      vpi_thunk_ptr =
+		grt_dynload_symbol (libghdlvpi_mod, &"_VPI_THUNK"[i]);
 
 	      if (vpi_thunk_ptr != NULL)
 		{
@@ -190,7 +139,8 @@ loadVpiModule (const char* modulename)
 
   for (i = 0; i < 2; i++) // try with and w/o leading underscores
     {
-      void *vpitable = module_symbol (vpimod, &"_vlog_startup_routines"[i]);
+      void *vpitable =
+	grt_dynload_symbol (vpimod, &"_vlog_startup_routines"[i]);
 
       if (vpitable)
 	{
diff --git a/src/grt/grt-dynload.c b/src/grt/grt-dynload.c
new file mode 100644
index 000000000..af595f454
--- /dev/null
+++ b/src/grt/grt-dynload.c
@@ -0,0 +1,52 @@
+#if defined(__WIN32__)
+#include <windows.h>
+void *
+grt_dynload_open (const char *path)
+{
+  return (void *)LoadLibrary (path);
+}
+
+void *
+grt_dynload_symbol (void *handle, const char *symbol)
+{
+  return (void *)GetProcAddress ((HMODULE)handle, symbol);
+}
+
+const char *
+grt_dynload_error (void)
+{
+  static char msg[256];
+
+  FormatMessage
+    (FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+     NULL,
+     GetLastError (),
+     MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+     (LPTSTR) &msg,
+     sizeof (msg) - 1,
+     NULL);
+  return msg;
+}
+
+#else
+
+#include <dlfcn.h>
+
+void *
+grt_dynload_open (const char *path)
+{
+  return dlopen (path, RTLD_LAZY);
+}
+
+void *
+grt_dynload_symbol (void *handle, const char *symbol)
+{
+  return dlsym (handle, symbol);
+}
+
+const char *
+grt_dynload_error (void)
+{
+  return dlerror ();
+}
+#endif
diff --git a/src/grt/grt-dynload.h b/src/grt/grt-dynload.h
new file mode 100644
index 000000000..ff2551a2f
--- /dev/null
+++ b/src/grt/grt-dynload.h
@@ -0,0 +1,11 @@
+/* Very simple wrappers for loading dll/so files.  */
+#ifndef __GRT_DYNLOAD__
+#define __GRT_DYNLOAD__
+
+void * grt_dynload_open (const char *path);
+void * grt_dynload_symbol (void *handle, const char *symbol);
+const char *grt_dynload_error (void);
+
+#endif /* __GRT_DYNLOAD__ */
+
+