summaryrefslogtreecommitdiff
path: root/src/grt/grt-main.adb
blob: 4d4106beefdaf077d65daf946b0393d2b2ff8925 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
--  GHDL Run Time (GRT) -  entry point.
--  Copyright (C) 2002 - 2014 Tristan Gingold
--
--  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.
--
--  As a special exception, if other files instantiate generics from this
--  unit, or you link this unit with other files to produce an executable,
--  this unit does not by itself cause the resulting executable to be
--  covered by the GNU General Public License. This exception does not
--  however invalidate any other reasons why the executable file might be
--  covered by the GNU Public License.
with System.Storage_Elements; --  Work around GNAT bug.
pragma Unreferenced (System.Storage_Elements);
with Grt.Types; use Grt.Types;
with Grt.Errors;
with Grt.Stacks;
with Grt.Processes;
with Grt.Signals;
with Grt.Options; use Grt.Options;
with Grt.Stats;
with Grt.Hooks;
with Grt.Disp_Signals;
with Grt.Disp;
with Grt.Modules;
with Grt.Change_Generics;

--  The following packages are not referenced in this package.
--  These are subprograms called only from GHDL generated code.
--  They are with'ed in order to be present in the binary.
pragma Warnings (Off);
with Grt.Files;
with Grt.Types;
with Grt.Lib;
with Grt.Shadow_Ieee;
with Grt.Images;
with Grt.Values;
with Grt.Names;
pragma Warnings (On);

package body Grt.Main is
   procedure Ghdl_Elaborate;
   pragma Import (C, Ghdl_Elaborate, "__ghdl_ELABORATE");

   --  Wrapper around elaboration just to return 0.
   function Ghdl_Elaborate_Wrapper return Integer is
   begin
      Ghdl_Elaborate;
      return 0;
   end Ghdl_Elaborate_Wrapper;

   procedure Ghdl_Init_Top_Generics is
   begin
      Grt.Change_Generics.Change_All_Generics;
      Grt.Change_Generics.Check_Required_Generic_Override;
   end Ghdl_Init_Top_Generics;

   procedure Disp_Stats_Hook (Code : Integer);
   pragma Convention (C, Disp_Stats_Hook);

   procedure Disp_Stats_Hook (Code : Integer)
   is
      pragma Unreferenced (Code);
   begin
      Stats.End_Simulation;
      Stats.Disp_Stats;
   end Disp_Stats_Hook;

   procedure Check_Flag_String
   is
      Err : Boolean;
   begin
      --  The conditions may be statically known.
      pragma Warnings (Off);

      Err := False;
      if (Std_Integer'Size = 32 and Flag_String (3) /= 'i')
        or else (Std_Integer'Size = 64 and Flag_String (3) /= 'I')
      then
         Err := True;
      end if;
      if (Std_Time'Size = 32 and Flag_String (4) /= 't')
        or else (Std_Time'Size = 64 and Flag_String (4) /= 'T')
      then
         Err := True;
      end if;

      pragma Warnings (On);

      if Err then
         Grt.Errors.Error
           ("GRT is not consistent with the flags used for your design");
      end if;
   end Check_Flag_String;

   procedure Run
   is
      use Grt.Errors;
      Stop : Boolean;
      Status : Integer;
   begin
      --  Register modules.
      --  They may insert hooks.
      Grt.Modules.Register_Modules;

      --  If the time resolution is to be set by the user, select a default
      --  resolution.  Options may override it.
      if Flag_String (5) = '?' then
         Set_Time_Resolution ('n');
      end if;

      --  Decode options.
      Grt.Options.Decode (Stop);

      --  Check coherency between GRT and GHDL generated code.
      Check_Flag_String;

      --  Early stop (for options such as --help).
      if Stop then
         return;
      end if;

      --  Internal initializations.
      Grt.Stacks.Stack_Init;

      Grt.Hooks.Call_Init_Hooks;

      Grt.Processes.Init;

      Grt.Signals.Init;

      if Flag_Stats then
         Stats.Start_Elaboration;
      end if;

      --  Elaboration.  Run through longjump to catch errors.
      if Grt.Processes.Run_Through_Longjump (Ghdl_Elaborate_Wrapper'Access) < 0
      then
         Grt.Errors.Error ("error during elaboration");
         return;
      end if;

      if Flag_Stats then
         Stats.Start_Order;
      end if;

      Grt.Hooks.Call_Start_Hooks;

      if not Flag_No_Run then
         Grt.Signals.Order_All_Signals;

         if Grt.Options.Disp_Signals_Map then
            Grt.Disp_Signals.Disp_Signals_Map;
         end if;
         if Grt.Options.Disp_Signals_Table then
            Grt.Disp_Signals.Disp_Signals_Table;
         end if;
         if Disp_Signals_Order then
            Grt.Disp.Disp_Signals_Order;
         end if;
         if Disp_Sensitivity then
            Grt.Disp_Signals.Disp_All_Sensitivity;
         end if;

         --  Do the simulation.
         Status := Grt.Processes.Simulation;
      end if;

      if Flag_Stats then
         Disp_Stats_Hook (0);
      end if;

      if Status = -2 then
         return;
      end if;

      if Expect_Failure then
         if Status >= 0 then
            Expect_Failure := False;
            Error ("error expected, but none occured");
         end if;
      else
         if Status < 0 then
            Error ("simulation failed");
         end if;
      end if;
   end Run;

end Grt.Main;