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(* *********************************************************************)
(* *)
(* The Compcert verified compiler *)
(* *)
(* Xavier Leroy, INRIA Paris-Rocquencourt *)
(* Jacques-Henri Jourdan, INRIA Paris-Rocquencourt *)
(* *)
(* 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 PowerPC *)
From Flocq Require Import Binary Bits.
Require Import ZArith List.
Definition ptr64 := false.
Definition big_endian := true.
Definition align_int64 := 8%Z.
Definition align_float64 := 8%Z.
(** Can we use the 64-bit extensions to the PowerPC architecture? *)
Parameter ppc64 : bool.
(** Should single-precision FP arguments passed on stack be passed
as singles or use double FP format. *)
Parameter single_passed_as_single : bool.
Definition splitlong := negb ppc64.
Lemma splitlong_ptr32: splitlong = true -> ptr64 = false.
Proof.
reflexivity.
Qed.
Definition default_nan_64 := (false, iter_nat 51 _ xO xH).
Definition default_nan_32 := (false, iter_nat 22 _ xO xH).
(* Always choose the first NaN argument, if any *)
Definition choose_nan_64 (l: list (bool * positive)) : bool * positive :=
match l with nil => default_nan_64 | n :: _ => n end.
Definition choose_nan_32 (l: list (bool * positive)) : bool * positive :=
match l with nil => default_nan_32 | n :: _ => n end.
Lemma choose_nan_64_idem: forall n,
choose_nan_64 (n :: n :: nil) = choose_nan_64 (n :: nil).
Proof. auto. Qed.
Lemma choose_nan_32_idem: forall n,
choose_nan_32 (n :: n :: nil) = choose_nan_32 (n :: nil).
Proof. auto. Qed.
Definition fma_order {A: Type} (x y z: A) := (x, z, y).
Definition fma_invalid_mul_is_nan := false.
Definition float_of_single_preserves_sNaN := true.
Global Opaque ptr64 big_endian splitlong
default_nan_64 choose_nan_64
default_nan_32 choose_nan_32
fma_order fma_invalid_mul_is_nan
float_of_single_preserves_sNaN.
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