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-- LLVM back-end for ortho.
-- 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 GNAT.OS_Lib; use GNAT.OS_Lib;
with Ada.Text_IO; use Ada.Text_IO;
with Ortho_LLVM; use Ortho_LLVM;
with Ortho_LLVM.Jit;
with LLVM.Core; use LLVM.Core;
with LLVM.Target; use LLVM.Target;
-- with LLVM.TargetMachine; use LLVM.TargetMachine;
with LLVM.ExecutionEngine; use LLVM.ExecutionEngine;
with LLVM.Analysis;
-- with Interfaces;
with Interfaces.C; use Interfaces.C;
package body Ortho_Jit is
-- Snap_Filename : GNAT.OS_Lib.String_Access := null;
Flag_Dump_Llvm : Boolean := False;
-- Name of the module.
Module_Name : String := "ortho" & Ascii.Nul;
-- procedure DisableLazyCompilation (EE : ExecutionEngineRef;
-- Disable : int);
-- pragma Import (C, DisableLazyCompilation,
-- "LLVMDisableLazyCompilation");
-- Initialize the whole engine.
procedure Init
is
Msg : aliased Cstring;
begin
InitializeNativeTarget;
InitializeNativeAsmPrinter;
LinkInJIT;
Module := ModuleCreateWithName (Module_Name'Address);
-- Now we going to create JIT
if CreateExecutionEngineForModule
(Ortho_LLVM.Jit.Engine'Access, Module, Msg'Access) /= 0
then
Put_Line (Standard_Error, "cannot create execution engine");
raise Program_Error;
end if;
Target_Data := GetExecutionEngineTargetData (Ortho_LLVM.Jit.Engine);
SetDataLayout (Module, CopyStringRepOfTargetData (Target_Data));
Ortho_LLVM.Init;
end Init;
procedure Set_Address (Decl : O_Dnode; Addr : Address)
renames Ortho_LLVM.Jit.Set_Address;
function Get_Address (Decl : O_Dnode) return Address
renames Ortho_LLVM.Jit.Get_Address;
-- procedure InstallLazyFunctionCreator (EE : ExecutionEngineRef;
-- Func : Address);
-- pragma Import (C, InstallLazyFunctionCreator,
-- "LLVMInstallLazyFunctionCreator");
-- Do link.
procedure Link (Status : out Boolean)
is
use LLVM.Analysis;
Msg : aliased Cstring;
begin
if Flag_Debug then
Ortho_LLVM.Finish_Debug;
end if;
if Flag_Dump_Llvm then
DumpModule (Module);
end if;
-- Verify module.
if LLVM.Analysis.VerifyModule
(Module, LLVM.Analysis.PrintMessageAction, Msg'Access) /= 0
then
DisposeMessage (Msg);
Status := False;
return;
end if;
-- FIXME: optim
end Link;
procedure Finish
is
-- F : ValueRef;
-- Addr : Address;
-- pragma Unreferenced (Addr);
begin
null;
-- if No_Lazy then
-- -- Be sure all functions code has been generated.
-- F := GetFirstFunction (Module);
-- while F /= Null_ValueRef loop
-- if GetFirstBasicBlock (F) /= Null_BasicBlockRef then
-- -- Only care about defined functions.
-- Addr := GetPointerToFunction (EE, F);
-- end if;
-- F := GetNextFunction (F);
-- end loop;
-- end if;
end Finish;
function Decode_Option (Option : String) return Boolean
is
Opt : constant String (1 .. Option'Length) := Option;
begin
if Opt = "--llvm-dump" then
Flag_Dump_Llvm := True;
return True;
end if;
return False;
end Decode_Option;
procedure Disp_Help is
begin
null;
end Disp_Help;
function Get_Jit_Name return String is
begin
return "LLVM";
end Get_Jit_Name;
end Ortho_Jit;
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