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;; Constraint definitions for Moxie

;; Copyright (C) 2009 Free Software Foundation, Inc.

;; Contributed by Anthony Green 

;; 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

;; .

;; -------------------------------------------------------------------------

;; 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")))