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(* *********************************************************************)
(* *)
(* The Compcert verified compiler *)
(* *)
(* Xavier Leroy, INRIA Paris *)
(* Jacques-Henri Jourdan, INRIA Paris *)
(* *)
(* Copyright Institut National de Recherche en Informatique et en *)
(* Automatique. All rights reserved. This file is distributed *)
(* 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 file is also distributed *)
(* under the terms of the INRIA Non-Commercial License Agreement. *)
(* *)
(* *********************************************************************)
(** Architecture-dependent parameters for RISC-V *)
Require Import ZArith.
Require Import Fappli_IEEE.
Require Import Fappli_IEEE_bits.
Parameter ptr64 : bool.
Definition big_endian := false.
Definition align_int64 := 8%Z.
Definition align_float64 := 8%Z.
Definition splitlong := negb ptr64.
Lemma splitlong_ptr32: splitlong = true -> ptr64 = false.
Proof.
unfold splitlong. destruct ptr64; simpl; congruence.
Qed.
(** Section 7.3: "Except when otherwise stated, if the result of a
floating-point operation is NaN, it is the canonical NaN. The
canonical NaN has a positive sign and all significand bits clear
except the MSB, a.k.a. the quiet bit."
We need to extend the [choose_binop_pl] functions to account for
this case. *)
Program Definition default_pl_64 : bool * nan_pl 53 :=
(false, iter_nat 51 _ xO xH).
Definition choose_binop_pl_64 (s1: bool) (pl1: nan_pl 53) (s2: bool) (pl2: nan_pl 53) :=
false. (**r always choose first NaN *)
Program Definition default_pl_32 : bool * nan_pl 24 :=
(false, iter_nat 22 _ xO xH).
Definition choose_binop_pl_32 (s1: bool) (pl1: nan_pl 24) (s2: bool) (pl2: nan_pl 24) :=
false. (**r always choose first NaN *)
Definition float_of_single_preserves_sNaN := false.
Global Opaque ptr64 big_endian splitlong
default_pl_64 choose_binop_pl_64
default_pl_32 choose_binop_pl_32
float_of_single_preserves_sNaN.
(** Whether to generate position-independent code or not *)
Parameter pic_code: unit -> bool.
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