ARM version of Machregsaux

git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1327 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e

1 files changed, 42 insertions, 0 deletions

diff --git a/arm/Machregsaux.ml b/arm/Machregsaux.ml
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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.     *)
+(*                                                                     *)
+(* *********************************************************************)
+
+(** Auxiliary functions on machine registers *)
+
+open Machregs
+
+let register_names = [
+  ("R0", R0);  ("R1", R1);  ("R2", R2);  ("R3", R3);
+  ("R4", R4);  ("R5", R5);  ("R6", R6);  ("R7", R7);
+  ("R8", R8);  ("R9", R9);  ("R11", R11);
+  ("F0", F0);  ("F1", F1);  
+  ("F4", F4);  ("F5", F5);  ("F6", F6);  ("F7", F7);
+  ("R10", IT1); ("R12", IT2);
+  ("F2", FT1); ("F3", FT2)
+]
+
+let name_of_register r =
+  let rec rev_assoc = function
+  | [] -> None
+  | (a, b) :: rem -> if b = r then Some a else rev_assoc rem
+  in rev_assoc register_names
+
+let register_by_name s =
+  try
+    Some(List.assoc (String.uppercase s) register_names)
+  with Not_found ->
+    None
+
+let can_reserve_register r =
+  List.mem r Conventions.int_callee_save_regs
+  || List.mem r Conventions.float_callee_save_regs
+