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;; Constraint definitions for Moxie
;; Copyright (C) 2009 Free Software Foundation, Inc.
;; Contributed by Anthony Green <green@moxielogic.com>
;; This file is part of GCC.
;; GCC is free software; you can redistribute it and/or modify it
;; under the terms of the GNU General Public License as published
;; by the Free Software Foundation; either version 3, or (at your
;; option) any later version.
;; GCC is distributed in the hope that it will be useful, but WITHOUT
;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
;; License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GCC; see the file COPYING3. If not see
;; <http://www.gnu.org/licenses/>.
;; -------------------------------------------------------------------------
;; Constraints
;; -------------------------------------------------------------------------
(define_constraint "A"
"An absolute address."
(and (match_code "mem")
(ior (match_test "GET_CODE (XEXP (op, 0)) == SYMBOL_REF")
(match_test "GET_CODE (XEXP (op, 0)) == LABEL_REF")
(match_test "GET_CODE (XEXP (op, 0)) == CONST"))))
(define_constraint "B"
"An offset address."
(and (match_code "mem")
(match_test "GET_CODE (XEXP (op, 0)) == PLUS")))
(define_constraint "W"
"A register indirect memory operand."
(and (match_code "mem")
(match_test "REG_P (XEXP (op, 0))
&& REGNO_OK_FOR_BASE_P (REGNO (XEXP (op, 0)))")))
(define_constraint "O"
"The constant zero"
(and (match_code "const_int")
(match_test "ival == 0")))
(define_constraint "I"
"An 8-bit constant (0..255)"
(and (match_code "const_int")
(match_test "ival >= 0 && ival <= 255")))
(define_constraint "N"
"A constant -(0..255)"
(and (match_code "const_int")
(match_test "ival >= -255 && ival <= 0")))
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