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-- GHDL driver - compile and link wrappers for VPI.
-- Copyright (C) 2016 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>.
with GNAT.OS_Lib; use GNAT.OS_Lib;
with Ada.Command_Line; use Ada.Command_Line;
with Simple_IO; use Simple_IO;
with Options; use Options;
with Ghdlmain; use Ghdlmain;
with Ghdllocal;
with Default_Paths; use Default_Paths;
package body Ghdlvpi is
-- Useful flags for target dependent operations.
-- So, we only support unix, darwin and windows. Might need a little bit
-- of tuning for another OS.
Is_Unix : constant Boolean := Shared_Library_Extension = ".so";
Is_Darwin : constant Boolean := Shared_Library_Extension = ".dylib";
-- Return the include directory.
function Get_Vpi_Include_Dir return String is
begin
-- Compute install path
Ghdllocal.Set_Exec_Prefix_From_Program_Name;
return Ghdllocal.Exec_Prefix.all & Directory_Separator & "include";
end Get_Vpi_Include_Dir;
-- Return the lib directory.
function Get_Vpi_Lib_Dir return String is
begin
if Ghdllocal.Exec_Prefix = null then
-- Compute install path (only once).
Ghdllocal.Set_Exec_Prefix_From_Program_Name;
end if;
return Ghdllocal.Exec_Prefix.all & Directory_Separator & "lib";
end Get_Vpi_Lib_Dir;
-- Return the lib directory, but unixify the path (for a unix shell in
-- windows).
function Get_Vpi_Lib_Dir_Unix return String is
begin
return Convert_Path_To_Unix (Get_Vpi_Lib_Dir);
end Get_Vpi_Lib_Dir_Unix;
function Get_Vpi_Cflags return Argument_List
is
Extra_Args : Argument_List (1 .. 2);
Nbr : Natural;
begin
Extra_Args (1) := new String'("-I" & Get_Vpi_Include_Dir);
Nbr := 1;
if Is_Unix then
-- PIC is the default on Darwin and Windows.
Nbr := Nbr + 1;
Extra_Args (Nbr) := new String'("-fPIC");
end if;
return Extra_Args (1 .. Nbr);
end Get_Vpi_Cflags;
function Get_Vpi_Ldflags return Argument_List
is
Extra_Args : Argument_List (1 .. 4);
Nbr : Natural;
begin
Extra_Args (1) := new String'("--shared");
Extra_Args (2) := new String'("-L" & Get_Vpi_Lib_Dir);
Extra_Args (3) := new String'("-lghdlvpi");
Nbr := 3;
if Is_Unix or Is_Darwin then
-- On linux/unix, add rpath.
-- No such concept on windows.
Nbr := Nbr + 1;
Extra_Args (Nbr) := new String'("-Wl,-rpath," & Get_Vpi_Lib_Dir);
end if;
return Extra_Args (1 .. Nbr);
end Get_Vpi_Ldflags;
-- Display ARGS on a single line.
procedure Disp (Args : Argument_List) is
begin
for I in Args'Range loop
if I /= Args'First then
Put (' ');
end if;
Put (Args (I).all);
end loop;
end Disp;
procedure Spawn_Compile (User_Args : Argument_List;
Extra_Args : Argument_List;
Verbose : Boolean)
is
Cargs : Argument_List (1 .. User_Args'Length + Extra_Args'Length);
Program_Name : String_Access;
Nbr_Args : Natural;
Status : Integer;
begin
Nbr_Args := 0;
-- Extract compiler name.
if User_Args'First > User_Args'Last then
Error ("missing compiler name");
else
Program_Name := User_Args (User_Args'First);
if Ghdllocal.Is_Basename (Program_Name.all) then
-- For a command name (without path component), search on the
-- path.
Program_Name := Locate_Exec_On_Path (Program_Name.all);
else
-- For a relative or absolute path, use the path directly.
null;
end if;
end if;
-- Copy user args.
for I in User_Args'First + 1 .. User_Args'Last loop
Nbr_Args := Nbr_Args + 1;
Cargs (Nbr_Args) := User_Args (I);
end loop;
-- Copy extra args.
for I in Extra_Args'Range loop
Nbr_Args := Nbr_Args + 1;
Cargs (Nbr_Args) := Extra_Args (I);
end loop;
-- Display command (if verbose)
if Verbose then
Put (Program_Name.all);
for I in Cargs'First .. Nbr_Args loop
Put (' ');
Put (Cargs (I).all);
end loop;
New_Line;
end if;
-- Execute command
Status := Spawn (Program_Name.all, Cargs (Cargs'First .. Nbr_Args));
Set_Exit_Status (Exit_Status (Status));
end Spawn_Compile;
-- A command that spawn with extra_args
type Extra_Args_Func is access function return Argument_List;
type Command_Spawn_Type is new Command_Str_Type with record
Flag_Verbose : Boolean := False;
Extra_Args : Extra_Args_Func;
end record;
procedure Perform_Action (Cmd : in out Command_Spawn_Type;
Args : Argument_List);
procedure Decode_Option (Cmd : in out Command_Spawn_Type;
Option : String;
Arg : String;
Res : out Option_State);
procedure Decode_Option (Cmd : in out Command_Spawn_Type;
Option : String;
Arg : String;
Res : out Option_State)
is
pragma Unreferenced (Arg);
begin
if Option = "-v" then
Cmd.Flag_Verbose := True;
Res := Option_Ok;
else
Res := Option_Unknown;
end if;
end Decode_Option;
procedure Perform_Action (Cmd : in out Command_Spawn_Type;
Args : Argument_List) is
begin
Spawn_Compile (Args, Cmd.Extra_Args.all, Cmd.Flag_Verbose);
end Perform_Action;
-- A command that display flags.
type Command_Vpi_Flags is new Command_Str_Type with record
Flags : Extra_Args_Func;
end record;
procedure Perform_Action (Cmd : in out Command_Vpi_Flags;
Args : Argument_List);
procedure Perform_Action (Cmd : in out Command_Vpi_Flags;
Args : Argument_List)
is
pragma Unreferenced (Args);
begin
Disp (Cmd.Flags.all);
end Perform_Action;
procedure Register_Commands is
begin
Register_Command
(new Command_Spawn_Type'
(Command_Type with
Flag_Verbose => False,
Cmd_Str => new String'
("--vpi-compile"),
Help_Str => new String'
("--vpi-compile CMD ARGS"
& ASCII.LF & " Compile with VPI include path"),
Extra_Args => Get_Vpi_Cflags'Access));
Register_Command
(new Command_Spawn_Type'
(Command_Type with
Flag_Verbose => False,
Cmd_Str => new String'
("--vpi-link"),
Help_Str => new String'
("--vpi-link CMD ARGS"
& ASCII.LF & " Link with VPI library"),
Extra_Args => Get_Vpi_Ldflags'Access));
Register_Command
(new Command_Vpi_Flags'
(Command_Type with
Cmd_Str => new String'
("--vpi-cflags"),
Help_Str => new String'
("--vpi-cflags"
& ASCII.LF & " Display VPI compile flags"),
Flags => Get_Vpi_Cflags'Access));
Register_Command
(new Command_Vpi_Flags'
(Command_Type with
Cmd_Str => new String'
("--vpi-ldflags"),
Help_Str => new String'
("--vpi-ldflags"
& ASCII.LF & " Display VPI link flags"),
Flags => Get_Vpi_Ldflags'Access));
Register_Command
(new Command_Str_Disp'
(Command_Type with
Cmd_Str => new String'
("--vpi-include-dir"),
Help_Str => new String'
("--vpi-include-dir"
& ASCII.LF & " Display VPI include directory"),
Disp => Get_Vpi_Include_Dir'Access));
Register_Command
(new Command_Str_Disp'
(Command_Type with
Cmd_Str => new String'
("--vpi-library-dir"),
Help_Str => new String'
("--vpi-library-dir"
& ASCII.LF & " Display VPI library directory"),
Disp => Get_Vpi_Lib_Dir'Access));
Register_Command
(new Command_Str_Disp'
(Command_Type with
Cmd_Str => new String'
("--vpi-library-dir-unix"),
Help_Str => new String'
("--vpi-library-dir-unix"
& ASCII.LF & " Display VPI library directory (unix form)"),
Disp => Get_Vpi_Lib_Dir_Unix'Access));
end Register_Commands;
end Ghdlvpi;
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