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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); ("R10", R10); ("R11", R11);
("R12", R12);
("F0", F0); ("F1", F1); ("F2", F2); ("F3", F3);
("F4", F4); ("F5", F5); ("F6", F6); ("F7", F7);
("F8", F8); ("F9", F9); ("F10", F10); ("F11", F11);
("F12", F12);("F13", F13);("F14", F14); ("F15", F15)
]
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 Conventions1.int_callee_save_regs
|| List.mem r Conventions1.float_callee_save_regs
|
