# 2 "asmcomp/riscv/arch.mli"
(**************************************************************************)
(*                                                                        *)
(*                                 OCaml                                  *)
(*                                                                        *)
(*                Nicolas Ojeda Bar <n.oje.bar@gmail.com>                 *)
(*                                                                        *)
(*   Copyright 2016 Institut National de Recherche en Informatique et     *)
(*     en Automatique.                                                    *)
(*                                                                        *)
(*   All rights reserved.  This file is distributed under the terms of    *)
(*   the GNU Lesser General Public License version 2.1, with the          *)
(*   special exception on linking described in the file LICENSE.          *)
(*                                                                        *)
(**************************************************************************)

(* Specific operations for the RISC-V processor *)

(* Machine-specific command-line options *)

val command_line_options : (string * Arg.spec * string) list

(* Specific operations *)

type specific_operation =
  | Imultaddf of bool        (* multiply, optionally negate, and add *)
  | Imultsubf of bool        (* multiply, optionally negate, and subtract *)

(* Addressing modes *)

type addressing_mode =
  | Iindexed of int                     (* reg + displ *)

val is_immediate : int -> bool

(* Sizes, endianness *)

val big_endian : bool

val size_addr : int

val size_int : int

val size_float : int

val allow_unaligned_access : bool

(* Behavior of division *)

val division_crashes_on_overflow : bool

(* Operations on addressing modes *)

val identity_addressing : addressing_mode

val offset_addressing : addressing_mode -> int -> addressing_mode

(* Printing operations and addressing modes *)

val print_addressing :
  (Format.formatter -> 'a -> unit) -> addressing_mode ->
  Format.formatter -> 'a array -> unit

val print_specific_operation :
  (Format.formatter -> 'a -> unit) -> specific_operation ->
  Format.formatter -> 'a array -> unit

(* Specific operations that are pure *)

val operation_is_pure : specific_operation -> bool

(* Specific operations that can raise *)

val operation_can_raise : specific_operation -> bool