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diff --git a/translate/grt/grt-vpi.ads b/translate/grt/grt-vpi.ads
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---  GHDL Run Time (GRT) - VPI interface.
---  Copyright (C) 2002 - 2014 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
---              the main purpose of this code is to interface with the
---              Icarus Verilog Interactive (IVI) simulator GUI
-
-with System; use System;
-with Ada.Unchecked_Conversion;
-with Grt.Types; use Grt.Types;
-with Grt.Avhpi; use Grt.Avhpi;
-
-package Grt.Vpi is
-
-   -- properties, see vpi_user.h
-   vpiUndefined:     constant integer := -1;
-   vpiType:          constant integer :=  1;
-   vpiName:          constant integer :=  2;
-   vpiFullName:      constant integer :=  3;
-   vpiTimePrecision: constant integer := 12;
-
-   -- object codes, see vpi_user.h
-   vpiModule:        constant integer := 32;
-   vpiNet:           constant integer := 36;
-   vpiScope:         constant integer := 84;
-   vpiInternalScope: constant integer := 92;
-   vpiLeftRange:     constant integer := 79;
-   vpiRightRange:    constant integer := 83;
-
-   --  Additionnal constants.
-   vpiCallback :     constant Integer := 200;
-
-   -- codes for the format tag of the vpi_value structure
-   vpiBinStrVal:     constant integer :=  1;
-   vpiOctStrVal:     constant integer :=  2;
-   vpiDecStrVal:     constant integer :=  3;
-   vpiHexStrVal:     constant integer :=  4;
-   vpiScalarVal:     constant integer :=  5;
-   vpiIntVal:        constant integer :=  6;
-   vpiRealVal:       constant integer :=  7;
-   vpiStringVal:     constant integer :=  8;
-   vpiVectorVal:     constant integer :=  9;
-   vpiStrengthVal:   constant integer := 10;
-   vpiTimeVal:       constant integer := 11;
-   vpiObjTypeVal:    constant integer := 12;
-   vpiSuppressVal:   constant integer := 13;
-
-   -- codes for type tag of vpi_time structure
-   vpiSimTime:       constant integer :=  2;
-
-   -- codes for the reason tag of cb_data structure
-   cbValueChange:    constant integer:= 1;
-   cbReadOnlySynch:  constant integer:= 7;
-   cbEndOfCompile:   constant integer:= 10;
-   cbEndOfSimulation:constant integer:= 12;
-
-   type struct_vpiHandle (mType : Integer := vpiUndefined);
-   type vpiHandle is access struct_vpiHandle;
-
-   -- typedef struct t_vpi_time {
-   --   int type;
-   --   unsigned int high;
-   --   unsigned int low;
-   --   double real;
-   -- } s_vpi_time, *p_vpi_time;
-   type s_vpi_time is record
-      mType : Integer;
-      mHigh : Integer; -- this should be unsigned
-      mLow :  Integer; -- this should be unsigned
-      mReal : Float;   -- this should be double
-   end record;
-   type p_vpi_time is access s_vpi_time;
-
-   -- typedef struct t_vpi_value
-   -- { int format;
-   --   union
-   --   {       char*str;
-   --           int scalar;
-   --           int integer;
-   --           double real;
-   --           struct t_vpi_time *time;
-   --           struct t_vpi_vecval *vector;
-   --           struct t_vpi_strengthval *strength;
-   --           char*misc;
-   --   } value;
-   -- } s_vpi_value, *p_vpi_value;
-   type s_vpi_value (Format : integer) is record
-      case Format is
-         when vpiBinStrVal
-           | vpiOctStrVal
-           | vpiDecStrVal
-           | vpiHexStrVal
-           | vpiStringVal =>
-            Str : Ghdl_C_String;
-         when vpiScalarVal =>
-            Scalar : Integer;
-         when vpiIntVal =>
-            Integer_m : Integer;
-            --when vpiRealVal=>     null; -- what is the equivalent to double?
-            --when vpiTimeVal=>     mTime:     p_vpi_time;
-            --when vpiVectorVal=>   mVector:   p_vpi_vecval;
-            --when vpiStrengthVal=> mStrength: p_vpi_strengthval;
-         when others =>
-            null;
-         end case;
-      end record;
-   type p_vpi_value is access s_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;
-   type s_cb_data;
-
-   type p_cb_data is access all s_cb_data;
-   function To_p_cb_data is new Ada.Unchecked_Conversion
-     (Source => Address, Target => p_cb_data);
-
-   type cb_rtn_type is access function (Cb : p_cb_data) return Integer;
-   pragma Convention (C, cb_rtn_type);
-
-   type s_cb_data is record
-      Reason : Integer;
-      Cb_Rtn : cb_rtn_type;
-      Obj : vpiHandle;
-      Time : p_vpi_time;
-      Value : p_vpi_value;
-      Index : Integer;
-      User_Data : Address;
-   end record;
-
-   type struct_vpiHandle (mType : Integer := vpiUndefined) is record
-      case mType is
-         when vpiCallback =>
-            Cb : p_cb_data;
-         when others =>
-            Ref   : VhpiHandleT;
-      end case;
-   end record;
-
-   -- vpiHandle  vpi_iterate(int type, vpiHandle ref)
-   function vpi_iterate (aType : Integer; Ref : vpiHandle) return vpiHandle;
-   pragma Export (C, vpi_iterate, "vpi_iterate");
-
-   -- int vpi_get(int property, vpiHandle ref)
-   function vpi_get (Property : Integer; Ref : vpiHandle) return Integer;
-   pragma Export (C, vpi_get, "vpi_get");
-
-   -- vpiHandle  vpi_scan(vpiHandle iter)
-   function vpi_scan (Iter : vpiHandle) return vpiHandle;
-   pragma Export (C, vpi_scan, "vpi_scan");
-
-   -- char *vpi_get_str(int property, vpiHandle ref)
-   function vpi_get_str (Property : Integer; Ref : vpiHandle)
-                       return Ghdl_C_String;
-   pragma Export (C, vpi_get_str, "vpi_get_str");
-
-   -- vpiHandle  vpi_handle(int type, vpiHandle ref)
-   function vpi_handle (aType: integer; Ref: vpiHandle)
-                       return vpiHandle;
-   pragma Export (C, vpi_handle, "vpi_handle");
-
-   -- void  vpi_get_value(vpiHandle expr, p_vpi_value value);
-   procedure vpi_get_value (Expr : vpiHandle; Value : p_vpi_value);
-   pragma Export (C, vpi_get_value, "vpi_get_value");
-
-   -- void  vpi_get_time(vpiHandle obj, s_vpi_time*t);
-   procedure vpi_get_time (Obj: vpiHandle; Time: p_vpi_time);
-   pragma Export (C, vpi_get_time, "vpi_get_time");
-
-   -- vpiHandle vpi_register_cb(p_cb_data data)
-   function vpi_register_cb (Data : p_cb_data) return vpiHandle;
-   pragma Export (C, vpi_register_cb, "vpi_register_cb");
-
--------------------------------------------------------------------------------
--- * * *   V P I   d u m m i e s   * * * * * * * * * * * * * * * * * * * * * *
--------------------------------------------------------------------------------
-
-   -- int vpi_free_object(vpiHandle ref)
-   function vpi_free_object(aRef: vpiHandle) return integer;
-   pragma Export (C, vpi_free_object, "vpi_free_object");
-
-   -- int vpi_get_vlog_info(p_vpi_vlog_info vlog_info_p)
-   function vpi_get_vlog_info(aVlog_info_p: System.Address) return integer;
-   pragma Export (C, vpi_get_vlog_info, "vpi_get_vlog_info");
-
-   -- vpiHandle vpi_handle_by_index(vpiHandle ref, int index)
-   function vpi_handle_by_index(aRef: vpiHandle; aIndex: integer)
-                               return vpiHandle;
-   pragma Export (C, vpi_handle_by_index, "vpi_handle_by_index");
-
-   -- unsigned int vpi_mcd_close(unsigned int mcd)
-   function vpi_mcd_close (Mcd : Integer) return Integer;
-   pragma Export (C, vpi_mcd_close, "vpi_mcd_close");
-
-   -- char *vpi_mcd_name(unsigned int mcd)
-   function vpi_mcd_name (Mcd : Integer) return Integer;
-   pragma Export (C, vpi_mcd_name, "vpi_mcd_name");
-
-   -- unsigned int vpi_mcd_open(char *name)
-   function vpi_mcd_open (Name : Ghdl_C_String) return Integer;
-   pragma Export (C, vpi_mcd_open, "vpi_mcd_open");
-
-   -- vpiHandle vpi_put_value(vpiHandle obj, p_vpi_value value,
-   --                         p_vpi_time when, int flags)
-   function vpi_put_value (aObj : vpiHandle;
-                           aValue : p_vpi_value;
-                           aWhen : p_vpi_time;
-                           aFlags : integer)
-                          return vpiHandle;
-   pragma Export (C, vpi_put_value, "vpi_put_value");
-
-   -- void vpi_register_systf(const struct t_vpi_systf_data*ss)
-   procedure vpi_register_systf (aSs : Address);
-   pragma Export (C, vpi_register_systf, "vpi_register_systf");
-
-   -- int vpi_remove_cb(vpiHandle ref)
-   function vpi_remove_cb (Ref : vpiHandle) return integer;
-   pragma Export (C, vpi_remove_cb, "vpi_remove_cb");
-
-   -- void vpi_vprintf(const char*fmt, va_list ap)
-   procedure vpi_vprintf (Fmt: Address; Ap: Address);
-   pragma Export (C, vpi_vprintf, "vpi_vprintf");
-
--------------------------------------------------------------------------------
--- * * *   G H D L   h o o k s   * * * * * * * * * * * * * * * * * * * * * * *
--------------------------------------------------------------------------------
-
-   procedure Register;
-
-end Grt.Vpi;
-