79 lines
2.6 KiB
OCaml
79 lines
2.6 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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(* Specific operations for the Sparc processor *)
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open Format
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(* SPARC V8 adds multiply and divide.
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SPARC V9 adds double precision float operations, conditional
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move, and more instructions that are only useful in 64 bit mode.
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Sun calls 32 bit V9 "V8+". *)
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type arch_version = SPARC_V7 | SPARC_V8 | SPARC_V9
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let arch_version = ref SPARC_V7
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let command_line_options =
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[ "-march=v8", Arg.Unit (fun () -> arch_version := SPARC_V8),
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" Generate code for SPARC V8 processors";
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"-march=v9", Arg.Unit (fun () -> arch_version := SPARC_V9),
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" Generate code for SPARC V9 processors" ]
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type specific_operation = unit (* None worth mentioning *)
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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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(* 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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let allow_unaligned_access = false
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(* Behavior of division *)
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let division_crashes_on_overflow = false
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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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let num_args_addressing = function
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Ibased(s, n) -> 0
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| Iindexed n -> 1
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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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let print_specific_operation printreg op ppf arg =
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Misc.fatal_error "Arch_sparc.print_specific_operation"
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