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-- GHDL Run Time (GRT) - entry point.
-- Copyright (C) 2002 - 2014 Tristan Gingold
--
-- This program 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 of the License, or
-- (at your option) any later version.
--
-- This program 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 this program. If not, see <gnu.org/licenses>.
--
-- 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 Grt.Stdio;
with Grt.Errors; use Grt.Errors;
with Grt.Processes;
with Grt.Signals;
with Grt.Options; use Grt.Options;
with Grt.Stats;
with Grt.Hooks;
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;
Default_Progname : constant String := "ghdl" & NUL;
-- Initialization: decode options, but no elaboration.
-- Return False in case of error.
procedure Run_Options (Progname : Ghdl_C_String;
Argc : Integer;
Argv : Grt.Options.Argv_Type) is
begin
if Progname = null then
Grt.Options.Progname := To_Ghdl_C_String (Default_Progname'Address);
else
Grt.Options.Progname := Progname;
end if;
Grt.Options.Argc := Argc;
Grt.Options.Argv := Argv;
end Run_Options;
function Run_Elab return C_Boolean
is
Stop : Boolean;
begin
-- Set stream for error messages
Grt.Errors.Set_Error_Stream (Grt.Stdio.stdout);
-- Register modules.
-- They may insert hooks.
Grt.Modules.Register_Modules;
-- Decode options.
Grt.Options.Decode (Stop);
-- Early stop (for options such as --help).
if Stop then
return False;
end if;
-- Check coherency between GRT and GHDL generated code.
Check_Flag_String;
-- Internal initializations.
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 Run_Through_Longjump (Ghdl_Elaborate_Wrapper'Access) < 0 then
Grt.Errors.Error ("error during elaboration");
return False;
end if;
-- Can continue.
return True;
end Run_Elab;
function Run_Simul return Integer is
begin
if Flag_No_Run then
return 0;
end if;
return Run_Through_Longjump (Grt.Processes.Simulation'Access);
end Run_Simul;
procedure Run_Finish (Status : Integer) is
begin
Grt.Processes.Simulation_Finish;
Grt.Hooks.Call_Finish_Hooks;
if Flag_Stats then
Disp_Stats_Hook (0);
end if;
if Expect_Failure then
if Status >= 0 then
Expect_Failure := False;
Error_NF ("error expected, but none occurred");
end if;
else
if Status < 0 then
Error_NF ("simulation failed");
end if;
end if;
end Run_Finish;
procedure Run
is
Ok : C_Boolean;
Status : Integer;
begin
Ok := Run_Elab;
if not Ok then
return;
end if;
Status := Run_Simul;
Run_Finish (Status);
end Run;
end Grt.Main;
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