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-- LLVM back-end for ortho - Main subprogram.
-- Copyright (C) 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.
with Ada.Command_Line; use Ada.Command_Line;
with Ada.Unchecked_Deallocation;
with Ada.Text_IO; use Ada.Text_IO;
with Ortho_Front; use Ortho_Front;
with Ortho_LLVM; use Ortho_LLVM;
procedure Ortho_Code_Main is
-- Name of the output filename (given by option '-o').
Output : String_Acc := null;
type Output_Kind_Type is (Output_Llvm, Output_Bitcode,
Output_Assembly, Output_Object);
Output_Kind : Output_Kind_Type := Output_Object;
-- Index of the first file argument.
First_File : Natural;
-- Current option index.
Optind : Natural;
-- Number of arguments.
Argc : constant Natural := Argument_Count;
begin
Ortho_Front.Init;
-- Decode options.
First_File := Natural'Last;
Optind := 1;
while Optind <= Argc loop
declare
Arg : constant String := Argument (Optind);
begin
if Arg (1) = '-' then
if Arg = "--dump-llvm" then
Set_Dump_LLVM (1);
elsif Arg = "--verify-llvm" then
Set_Verify_LLVM (1);
elsif Arg = "-o" then
if Optind = Argc then
Put_Line (Standard_Error, "error: missing filename to '-o'");
return;
end if;
Output := new String'(Argument (Optind + 1) & ASCII.Nul);
Optind := Optind + 1;
elsif Arg = "-quiet" then
-- Skip silently.
null;
elsif Arg = "-S" then
Output_Kind := Output_Assembly;
-- Codegen := AssemblyFile;
elsif Arg = "-c" then
Output_Kind := Output_Object;
elsif Arg = "-O0" then
Set_Optimization_Level (0);
elsif Arg = "-O1" or else Arg = "-O" then
Set_Optimization_Level (1);
elsif Arg = "-O2" then
Set_Optimization_Level (2);
elsif Arg = "-O3" then
Set_Optimization_Level (3);
elsif Arg = "-fpic" or Arg = "-fPIC" then
Set_PIC_Flag (1);
elsif Arg = "-fno-pic" then
Set_PIC_Flag (0);
elsif Arg = "--emit-llvm" then
Output_Kind := Output_Llvm;
elsif Arg = "--emit-bc" then
Output_Kind := Output_Bitcode;
elsif Arg = "-glines"
or else Arg = "-gline-tables-only"
then
Set_Debug_Level (1);
elsif Arg = "-g" then
Set_Debug_Level (2);
elsif Arg = "-g0" then
Set_Debug_Level (0);
else
-- This is really an argument.
declare
procedure Unchecked_Deallocation is
new Ada.Unchecked_Deallocation
(Name => String_Acc, Object => String);
Opt : String_Acc := new String'(Arg);
Opt_Arg : String_Acc;
Res : Natural;
begin
Opt_Arg := null;
if Optind < Argument_Count then
declare
Arg1 : constant String := Argument (Optind + 1);
begin
if Arg1 (Arg1'First) /= '-' then
Opt_Arg := new String'(Arg1);
end if;
end;
end if;
Res := Ortho_Front.Decode_Option (Opt, Opt_Arg);
case Res is
when 0 =>
Put_Line (Standard_Error,
"unknown option '" & Arg & "'");
return;
when 1 =>
null;
when 2 =>
Optind := Optind + 1;
when others =>
raise Program_Error;
end case;
Unchecked_Deallocation (Opt);
Unchecked_Deallocation (Opt_Arg);
end;
end if;
else
First_File := Optind;
exit;
end if;
end;
Optind := Optind + 1;
end loop;
if First_File < Argument_Count then
Put_Line (Standard_Error, "error: too many source filenames");
return;
end if;
Set_Exit_Status (Failure);
declare
Filename : String_Acc;
begin
if First_File > Argument_Count then
Filename := new String'("*stdin*");
else
Filename := new String'(Argument (First_File));
end if;
Ortho_LLVM.Init (Filename.all, Filename'Length);
if not Parse (Filename) then
-- Parse error.
return;
end if;
exception
when others =>
return;
end;
if Output /= null then
case Output_Kind is
when Output_Object =>
Generate_Object (Output.all'Address);
when Output_Assembly =>
Generate_Assembly (Output.all'Address);
when Output_Bitcode =>
Generate_Bitcode (Output.all'Address);
when Output_Llvm =>
Generate_Llvm (Output.all'Address);
end case;
end if;
Set_Exit_Status (Success);
exception
when others =>
Set_Exit_Status (2);
raise;
end Ortho_Code_Main;
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