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