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(*
* Vericert: Verified high-level synthesis.
* Copyright (C) 2020 Yann Herklotz <yann@yannherklotz.com>
*
* 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 3 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 <https://www.gnu.org/licenses/>.
*)
From compcert Require Import Maps.
From compcert Require Errors Globalenvs Integers.
From compcert Require Import AST.
From vericert Require Import RTLBlock Verilog HTL Vericertlib AssocMap ValueInt Statemonad.
Parameter transl_module : function -> Errors.res module.
Definition transl_fundef := transf_partial_fundef transl_module.
Definition main_is_internal (p : RTLBlock.program) : bool :=
let ge := Globalenvs.Genv.globalenv p in
match Globalenvs.Genv.find_symbol ge p.(AST.prog_main) with
| Some b =>
match Globalenvs.Genv.find_funct_ptr ge b with
| Some (AST.Internal _) => true
| _ => false
end
| _ => false
end.
Definition transl_program (p : RTLBlock.program) : Errors.res HTL.program :=
if main_is_internal p
then transform_partial_program transl_fundef p
else Errors.Error (Errors.msg "Main function is not Internal.").
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