68 lines
2.2 KiB
OCaml
68 lines
2.2 KiB
OCaml
(***********************************************************************)
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(* *)
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(* Caml Special Light *)
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(* *)
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(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
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(* *)
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(* Copyright 1995 Institut National de Recherche en Informatique et *)
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(* Automatique. Distributed only by permission. *)
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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 Format
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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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(* Addressing modes *)
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type addressing_mode =
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Iindexed of int (* reg + displ *)
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| Iindexed2 of int (* reg + reg + displ *)
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(* Sizes, endianness *)
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let big_endian = true
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let size_addr = 4
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let size_int = 4
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let size_float = 8
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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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Iindexed n -> Iindexed(n + delta)
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| Iindexed2 n -> Iindexed2(n + delta)
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let num_args_addressing = function
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Iindexed n -> 1
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| Iindexed2 n -> 2
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(* Printing operations and addressing modes *)
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let print_addressing printreg addr arg =
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match addr with
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Iindexed n ->
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printreg arg.(0);
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if n <> 0 then begin print_string " + "; print_int n end
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| Iindexed2 n ->
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printreg arg.(0); print_string " + "; printreg arg.(1);
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if n <> 0 then begin print_string " + "; print_int n end
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let print_specific_operation printreg op arg =
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match op with
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Imultaddf ->
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printreg arg.(0); print_string " *f "; printreg arg.(1);
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print_string " +f "; printreg arg.(2)
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| Imultsubf ->
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printreg arg.(0); print_string " *f "; printreg arg.(1);
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print_string " -f "; printreg arg.(2)
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