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-rw-r--r--src/bitfield.ml51
1 files changed, 51 insertions, 0 deletions
diff --git a/src/bitfield.ml b/src/bitfield.ml
index 0a32654d..db3411b1 100644
--- a/src/bitfield.ml
+++ b/src/bitfield.ml
@@ -1,3 +1,52 @@
+(**************************************************************************)
+(* Sail *)
+(* *)
+(* Copyright (c) 2013-2017 *)
+(* Kathyrn Gray *)
+(* Shaked Flur *)
+(* Stephen Kell *)
+(* Gabriel Kerneis *)
+(* Robert Norton-Wright *)
+(* Christopher Pulte *)
+(* Peter Sewell *)
+(* Alasdair Armstrong *)
+(* Brian Campbell *)
+(* Thomas Bauereiss *)
+(* Anthony Fox *)
+(* Jon French *)
+(* Dominic Mulligan *)
+(* Stephen Kell *)
+(* Mark Wassell *)
+(* *)
+(* All rights reserved. *)
+(* *)
+(* This software was developed by the University of Cambridge Computer *)
+(* Laboratory as part of the Rigorous Engineering of Mainstream Systems *)
+(* (REMS) project, funded by EPSRC grant EP/K008528/1. *)
+(* *)
+(* Redistribution and use in source and binary forms, with or without *)
+(* modification, are permitted provided that the following conditions *)
+(* are met: *)
+(* 1. Redistributions of source code must retain the above copyright *)
+(* notice, this list of conditions and the following disclaimer. *)
+(* 2. Redistributions in binary form must reproduce the above copyright *)
+(* notice, this list of conditions and the following disclaimer in *)
+(* the documentation and/or other materials provided with the *)
+(* distribution. *)
+(* *)
+(* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' *)
+(* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED *)
+(* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *)
+(* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR *)
+(* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, *)
+(* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *)
+(* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF *)
+(* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND *)
+(* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, *)
+(* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT *)
+(* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF *)
+(* SUCH DAMAGE. *)
+(**************************************************************************)
module Big_int = Nat_big_num
@@ -18,6 +67,7 @@ let newtype name size order =
let nt = Printf.sprintf "newtype %s = Mk_%s : %s" name name (bitvec size order) in
ast_of_def_string order nt
+(* These functions define the getter and setter for all the bits in the field. *)
let full_getter name size order =
let fg_val = Printf.sprintf "val _get_%s : %s -> %s" name name (bitvec size order) in
let fg_function = Printf.sprintf "function _get_%s Mk_%s(v) = v" name name in
@@ -41,6 +91,7 @@ let full_overload name order =
let full_accessor name size order =
combine [full_getter name size order; full_setter name size order; full_overload name order]
+(* For every index range, create a getter and setter *)
let index_range_getter' name field order start stop =
let size = if start > stop then start - (stop - 1) else stop - (start - 1) in
let irg_val = Printf.sprintf "val _get_%s : %s -> %s" field name (bitvec size order) in