Move sources to src/ subdirectory.

1 files changed, 277 insertions, 0 deletions

diff --git a/src/translate/grt/grt-cvpi.c b/src/translate/grt/grt-cvpi.c
new file mode 100644
index 0000000..51edd67
--- /dev/null
+++ b/src/translate/grt/grt-cvpi.c
@@ -0,0 +1,277 @@
+/*  GRT VPI C helpers.
+    Copyright (C) 2003, 2004, 2005 Tristan Gingold & Felix Bertram
+
+    GHDL is free software; you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation; either version 2, or (at your option) any later
+    version.
+
+    GHDL is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with GCC; see the file COPYING.  If not, write to the Free
+    Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+    02111-1307, USA.
+*/
+//-----------------------------------------------------------------------------
+// Description: VPI interface for GRT runtime, "C" helpers
+//              the main purpose of this code is to interface with the
+//              Icarus Verilog Interactive (IVI) simulator GUI
+//-----------------------------------------------------------------------------
+
+#include <stdio.h>
+#include <stdlib.h>
+
+//-----------------------------------------------------------------------------
+// VPI callback functions
+typedef void *vpiHandle, *p_vpi_time, *p_vpi_value;
+typedef struct t_cb_data {
+      int reason;
+      int (*cb_rtn)(struct t_cb_data*cb);
+      vpiHandle obj;
+      p_vpi_time time;
+      p_vpi_value value;
+      int index;
+      char*user_data;
+} s_cb_data, *p_cb_data;
+
+//-----------------------------------------------------------------------------
+// vpi thunking a la Icarus Verilog
+#include <stdarg.h>
+typedef void *s_vpi_time, *p_vpi_vlog_info, *p_vpi_error_info;
+#define VPI_THUNK_MAGIC  (0x87836BA5)
+struct t_vpi_systf_data;
+void         vpi_register_systf  (const struct t_vpi_systf_data*ss);
+void         vpi_vprintf         (const char*fmt, va_list ap);
+unsigned int vpi_mcd_close       (unsigned int mcd);
+char *       vpi_mcd_name        (unsigned int mcd);
+unsigned int vpi_mcd_open        (char *name);
+unsigned int vpi_mcd_open_x      (char *name, char *mode);
+int          vpi_mcd_vprintf     (unsigned int mcd, const char*fmt, va_list ap);
+int          vpi_mcd_fputc       (unsigned int mcd, unsigned char x);
+int          vpi_mcd_fgetc       (unsigned int mcd);
+vpiHandle    vpi_register_cb     (p_cb_data data);
+int          vpi_remove_cb       (vpiHandle ref);
+void         vpi_sim_vcontrol    (int operation, va_list ap);
+vpiHandle    vpi_handle          (int type, vpiHandle ref);
+vpiHandle    vpi_iterate         (int type, vpiHandle ref);
+vpiHandle    vpi_scan            (vpiHandle iter);
+vpiHandle    vpi_handle_by_index (vpiHandle ref, int index);
+void         vpi_get_time        (vpiHandle obj, s_vpi_time*t);
+int          vpi_get             (int property, vpiHandle ref);
+char*        vpi_get_str         (int property, vpiHandle ref);
+void         vpi_get_value       (vpiHandle expr, p_vpi_value value);
+vpiHandle    vpi_put_value       (vpiHandle obj, p_vpi_value value,
+                                  p_vpi_time when, int flags);
+int          vpi_free_object     (vpiHandle ref);
+int          vpi_get_vlog_info   (p_vpi_vlog_info vlog_info_p);
+int          vpi_chk_error       (p_vpi_error_info info);
+vpiHandle    vpi_handle_by_name  (char *name, vpiHandle scope);
+
+typedef struct {
+	int magic;
+	void         (*vpi_register_systf) (const struct t_vpi_systf_data*ss);
+	void         (*vpi_vprintf)        (const char*fmt, va_list ap);
+	unsigned int (*vpi_mcd_close)      (unsigned int mcd);
+	char*        (*vpi_mcd_name)       (unsigned int mcd);
+	unsigned int (*vpi_mcd_open)       (char *name);
+	unsigned int (*vpi_mcd_open_x)     (char *name, char *mode);
+	int          (*vpi_mcd_vprintf)    (unsigned int mcd, const char*fmt, va_list ap);
+	int          (*vpi_mcd_fputc)      (unsigned int mcd, unsigned char x);
+	int          (*vpi_mcd_fgetc)      (unsigned int mcd);
+	vpiHandle    (*vpi_register_cb)    (p_cb_data data);
+	int          (*vpi_remove_cb)      (vpiHandle ref);
+	void         (*vpi_sim_vcontrol)   (int operation, va_list ap);
+	vpiHandle    (*vpi_handle)         (int type, vpiHandle ref);
+	vpiHandle    (*vpi_iterate)        (int type, vpiHandle ref);
+	vpiHandle    (*vpi_scan)           (vpiHandle iter);
+	vpiHandle    (*vpi_handle_by_index)(vpiHandle ref, int index);
+	void         (*vpi_get_time)       (vpiHandle obj, s_vpi_time*t);
+	int          (*vpi_get)            (int property, vpiHandle ref);
+	char*        (*vpi_get_str)        (int property, vpiHandle ref);
+	void         (*vpi_get_value)      (vpiHandle expr, p_vpi_value value);
+	vpiHandle    (*vpi_put_value)      (vpiHandle obj, p_vpi_value value,
+	                                    p_vpi_time when, int flags);
+	int          (*vpi_free_object)    (vpiHandle ref);
+	int          (*vpi_get_vlog_info)  (p_vpi_vlog_info vlog_info_p);
+	int          (*vpi_chk_error)      (p_vpi_error_info info);
+	vpiHandle    (*vpi_handle_by_name) (char *name, vpiHandle scope);
+} vpi_thunk, *p_vpi_thunk;
+
+int vpi_register_sim(p_vpi_thunk tp);
+
+static vpi_thunk thunkTable = 
+{	VPI_THUNK_MAGIC,
+	vpi_register_systf,
+	vpi_vprintf,
+	vpi_mcd_close,
+	vpi_mcd_name,
+	vpi_mcd_open,
+	0, //vpi_mcd_open_x,
+	0, //vpi_mcd_vprintf,
+	0, //vpi_mcd_fputc,
+	0, //vpi_mcd_fgetc,
+	vpi_register_cb,
+	vpi_remove_cb,
+	0, //vpi_sim_vcontrol,
+	vpi_handle,
+	vpi_iterate,
+	vpi_scan,
+	vpi_handle_by_index,
+	vpi_get_time,
+	vpi_get,
+	vpi_get_str,
+	vpi_get_value,
+	vpi_put_value,
+	vpi_free_object,
+	vpi_get_vlog_info,
+	0, //vpi_chk_error,
+	0 //vpi_handle_by_name
+};
+
+//-----------------------------------------------------------------------------
+// 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
+
+int
+loadVpiModule (const char* modulename)
+{
+  static const char * const vpitablenames[] =
+    {
+      "_vlog_startup_routines", // with leading underscore: MacOSX
+      "vlog_startup_routines"   // w/o  leading underscore: Linux
+    };
+  static const char * const vpithunknames[] =
+    {
+      "_vpi_register_sim",      // with leading underscore: MacOSX
+      "vpi_register_sim"        // w/o  leading underscore: Linux
+    };
+
+  int i;	
+  void* vpimod;
+
+  fprintf (stderr, "loading VPI module '%s'\n", modulename);
+
+  vpimod = module_open (modulename);
+
+  if (vpimod == NULL)
+    {
+      const char *msg;
+
+      msg = module_error ();
+
+      fprintf (stderr, "%s\n", msg == NULL ? "unknown dlopen error" : msg);
+      return -1;
+    }
+
+  for (i = 0; i < 2; i++) // try with and w/o leading underscores
+    {
+      void* vpithunk;
+      void* vpitable;
+	  
+      vpitable = module_symbol (vpimod, vpitablenames[i]);
+      vpithunk = module_symbol (vpimod, vpithunknames[i]);
+	  
+      if (vpithunk)
+	{
+	  typedef int (*funT)(p_vpi_thunk tp);
+	  funT regsim;
+	  
+	  regsim = (funT)vpithunk;
+	  regsim (&thunkTable);
+	}
+      else
+	{
+	  // this is not an error, as the register-mechanism
+	  // is not standardized
+	}
+      
+      if (vpitable)
+	{
+	  unsigned int tmp;
+	  //extern void (*vlog_startup_routines[])();
+	  typedef void (*vlog_startup_routines_t)(void);
+	  vlog_startup_routines_t *vpifuns;
+				
+	  vpifuns = (vlog_startup_routines_t*)vpitable;
+	  for (tmp = 0; vpifuns[tmp]; tmp++)
+	    {
+	      vpifuns[tmp]();
+	    }
+	  
+	  fprintf (stderr, "VPI module loaded!\n");
+	  return 0; // successfully registered VPI module
+	}
+    }
+  fprintf (stderr, "vlog_startup_routines not found\n");
+  return -1; // failed to register VPI module
+}
+
+void
+vpi_printf (const char *fmt, ...)
+{
+  va_list params;
+
+  va_start (params, fmt);
+  vprintf (fmt, params);
+  va_end (params);
+}
+
+//-----------------------------------------------------------------------------
+// end of file
+