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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 = [
("R3", R3); ("R4", R4); ("R5", R5); ("R6", R6);
("R7", R7); ("R8", R8); ("R9", R9); ("R10", R10);
("R11", R11); ("R12", R12);
("R14", R14); ("R15", R15); ("R16", R16);
("R17", R17); ("R18", R18); ("R19", R19); ("R20", R20);
("R21", R21); ("R22", R22); ("R23", R23); ("R24", R24);
("R25", R25); ("R26", R26); ("R27", R27); ("R28", R28);
("R29", R29); ("R30", R30); ("R31", R31);
("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);
("F16", F16); ("F17", F17); ("F18", F18); ("F19", F19);
("F20", F20); ("F21", F21); ("F22", F22); ("F23", F23);
("F24", F24); ("F25", F25); ("F26", F26); ("F27", F27);
("F28", F28); ("F29", F29); ("F30", F30); ("F31", F31)
]
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
|
