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diff --git a/arm/hardfloat/Stacklayout.v b/arm/hardfloat/Stacklayout.v
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-(* *********************************************************************)
-(*                                                                     *)
-(*              The Compcert verified compiler                         *)
-(*                                                                     *)
-(*          Xavier Leroy, 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 INRIA Non-Commercial License Agreement.     *)
-(*                                                                     *)
-(* *********************************************************************)
-
-(** Machine- and ABI-dependent layout information for activation records. *)
-
-Require Import Coqlib.
-Require Import Bounds.
-
-(** The general shape of activation records is as follows,
-  from bottom (lowest offsets) to top:
-- Space for outgoing arguments to function calls.
-- Local stack slots.
-- Saved values of integer callee-save registers used by the function.
-- Saved values of float callee-save registers used by the function.
-- Saved return address into caller.
-- Pointer to activation record of the caller.
-- Space for the stack-allocated data declared in Cminor.
-
-The [frame_env] compilation environment records the positions of
-the boundaries between areas in the frame part.
-*)
-
-Definition fe_ofs_arg := 0.
-
-Record frame_env : Type := mk_frame_env {
-  fe_size: Z;
-  fe_ofs_link: Z;
-  fe_ofs_retaddr: Z;
-  fe_ofs_local: Z;
-  fe_ofs_int_callee_save: Z;
-  fe_num_int_callee_save: Z;
-  fe_ofs_float_callee_save: Z;
-  fe_num_float_callee_save: Z;
-  fe_stack_data: Z
-}.
-
-(** Computation of the frame environment from the bounds of the current
-  function. *)
-
-Definition make_env (b: bounds) :=
-  let ol := align (4 * b.(bound_outgoing)) 8 in    (* locals *)
-  let oics := ol + 4 * b.(bound_local) in (* integer callee-saves *)
-  let oendi := oics + 4 * b.(bound_int_callee_save) in
-  let ofcs := align oendi 8 in       (* float callee-saves *)
-  let ora := ofcs + 8 * b.(bound_float_callee_save) in (* retaddr *)
-  let olink := ora + 4 in (* back link *)
-  let ostkdata := olink + 4 in (* stack data *)
-  let sz := align (ostkdata + b.(bound_stack_data)) 8 in
-  mk_frame_env sz olink ora ol
-                  oics b.(bound_int_callee_save)
-                  ofcs b.(bound_float_callee_save)
-                  ostkdata.
-
-(** Separation property *)
-
-Remark frame_env_separated:
-  forall b,
-  let fe := make_env b in
-  0 <= fe_ofs_arg
-  /\ fe_ofs_arg + 4 * b.(bound_outgoing) <= fe.(fe_ofs_local)
-  /\ fe.(fe_ofs_local) + 4 * b.(bound_local) <= fe.(fe_ofs_int_callee_save)
-  /\ fe.(fe_ofs_int_callee_save) + 4 * b.(bound_int_callee_save) <= fe.(fe_ofs_float_callee_save)
-  /\ fe.(fe_ofs_float_callee_save) + 8 * b.(bound_float_callee_save) <= fe.(fe_ofs_retaddr)
-  /\ fe.(fe_ofs_retaddr) + 4 <= fe.(fe_ofs_link)
-  /\ fe.(fe_ofs_link) + 4 <= fe.(fe_stack_data)
-  /\ fe.(fe_stack_data) + b.(bound_stack_data) <= fe.(fe_size).
-Proof.
-  intros.
-  generalize (align_le (4 * bound_outgoing b) 8 (refl_equal)).
-  generalize (align_le (fe_ofs_int_callee_save fe + 4 * b.(bound_int_callee_save)) 8 (refl_equal _)).
-  generalize (align_le (fe_stack_data fe + b.(bound_stack_data)) 8 (refl_equal)).
-  unfold fe, make_env, fe_size, fe_ofs_link, fe_ofs_retaddr,
-    fe_ofs_local, fe_ofs_int_callee_save, fe_num_int_callee_save,
-    fe_ofs_float_callee_save, fe_num_float_callee_save,
-    fe_stack_data, fe_ofs_arg.
-  intros.
-  generalize (bound_local_pos b); intro;
-  generalize (bound_int_callee_save_pos b); intro;
-  generalize (bound_float_callee_save_pos b); intro;
-  generalize (bound_outgoing_pos b); intro;
-  generalize (bound_stack_data_pos b); intro.
-  omega.
-Qed.
-
-(** Alignment property *)
-
-Remark frame_env_aligned:
-  forall b,
-  let fe := make_env b in
-  (4 | fe.(fe_ofs_link))
-  /\ (8 | fe.(fe_ofs_local))
-  /\ (4 | fe.(fe_ofs_int_callee_save))
-  /\ (8 | fe.(fe_ofs_float_callee_save))
-  /\ (4 | fe.(fe_ofs_retaddr))
-  /\ (8 | fe.(fe_stack_data))
-  /\ (8 | fe.(fe_size)).
-Proof.
-  intros.
-  unfold fe, make_env, fe_size, fe_ofs_link, fe_ofs_retaddr,
-    fe_ofs_local, fe_ofs_int_callee_save, fe_num_int_callee_save,
-    fe_ofs_float_callee_save, fe_num_float_callee_save,
-    fe_stack_data.
-  set (x1 := 4 * bound_outgoing b).
-  assert (4 | x1). unfold x1; exists (bound_outgoing b); ring.
-  set (x2 := align x1 8).
-  assert (8 | x2). apply align_divides. omega. 
-  set (x3 := x2 + 4 * bound_local b).
-  assert (4 | x3). apply Zdivide_plus_r. apply Zdivides_trans with 8; auto. exists 2; auto.
-  exists (bound_local b); ring.
-  set (x4 := align (x3 + 4 * bound_int_callee_save b) 8).
-  assert (8 | x4). apply align_divides. omega.
-  set (x5 := x4 + 8 * bound_float_callee_save b).
-  assert (8 | x5). apply Zdivide_plus_r; auto. exists (bound_float_callee_save b); ring.
-  assert (4 | x5). apply Zdivides_trans with 8; auto. exists 2; auto.
-  set (x6 := x5 + 4). 
-  assert (4 | x6). apply Zdivide_plus_r; auto. exists 1; auto.
-  set (x7 := x6 + 4).
-  assert (8 | x7). unfold x7, x6. replace (x5 + 4 + 4) with (x5 + 8) by omega. 
-  apply Zdivide_plus_r; auto. exists 1; auto.
-  set (x8 := align (x7 + bound_stack_data b) 8).
-  assert (8 | x8). apply align_divides. omega.
-  tauto.
-Qed.