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(***********************************************************************)
(* *)
(* OCaml *)
(* *)
(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 1996 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed *)
(* under the terms of the Q Public License version 1.0. *)
(* *)
(***********************************************************************)
(* Specific operations for the PowerPC processor *)
open Misc
open Format
(* Machine-specific command-line options *)
let command_line_options = []
(* Specific operations *)
type specific_operation =
Imultaddf (* multiply and add *)
| Imultsubf (* multiply and subtract *)
| Ialloc_far of int (* allocation in large functions *)
(* Addressing modes *)
type addressing_mode =
Ibased of string * int (* symbol + displ *)
| Iindexed of int (* reg + displ *)
| Iindexed2 (* reg + reg *)
(* Sizes, endianness *)
let big_endian = true
let ppc64 =
match Config.model with "ppc64" -> true | _ -> false
let size_addr = if ppc64 then 8 else 4
let size_int = size_addr
let size_float = 8
let allow_unaligned_access = false
(* Behavior of division *)
let division_crashes_on_overflow = true
(* Operations on addressing modes *)
let identity_addressing = Iindexed 0
let offset_addressing addr delta =
match addr with
Ibased(s, n) -> Ibased(s, n + delta)
| Iindexed n -> Iindexed(n + delta)
| Iindexed2 -> assert false
let num_args_addressing = function
Ibased(s, n) -> 0
| Iindexed n -> 1
| Iindexed2 -> 2
(* Printing operations and addressing modes *)
let print_addressing printreg addr ppf arg =
match addr with
| Ibased(s, n) ->
let idx = if n <> 0 then Printf.sprintf " + %i" n else "" in
fprintf ppf "\"%s\"%s" s idx
| Iindexed n ->
let idx = if n <> 0 then Printf.sprintf " + %i" n else "" in
fprintf ppf "%a%s" printreg arg.(0) idx
| Iindexed2 ->
fprintf ppf "%a + %a" printreg arg.(0) printreg arg.(1)
let print_specific_operation printreg op ppf arg =
match op with
| Imultaddf ->
fprintf ppf "%a *f %a +f %a"
printreg arg.(0) printreg arg.(1) printreg arg.(2)
| Imultsubf ->
fprintf ppf "%a *f %a -f %a"
printreg arg.(0) printreg arg.(1) printreg arg.(2)
| Ialloc_far n ->
fprintf ppf "alloc_far %d" n
|
