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1 ;; GCC machine description for picochip
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2 ;; Copyright (C) 2008, 2009 Free Software Foundation, Inc.
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3 ;; Contributed by picoChip Designs Ltd (http://www.picochip.com)
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4 ;; Maintained by Daniel Towner (dant@picochip.com) and Hariharan
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5 ;; Sandanagobalane (hariharan@picochip.com)
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6 ;;
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7 ;; This file is part of GCC.
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8 ;;
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9 ;; GCC is free software; you can redistribute it and/or modify
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10 ;; it under the terms of the GNU General Public License as published by
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11 ;; the Free Software Foundation; either version 3, or (at your option)
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12 ;; any later version.
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13 ;;
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14 ;; GCC is distributed in the hope that it will be useful,
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15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 ;; GNU General Public License for more details.
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18 ;;
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19 ;; You should have received a copy of the GNU General Public License
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20 ;; along with GCC; see the file COPYING3. If not, see
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21 ;; <http://www.gnu.org/licenses/>.
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22
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23 (define_constraint "I"
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24 "4-bits signed value"
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25 (and (match_code "const_int")
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26 (match_test " ival >= -8 && ival< 8")))
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27
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28 (define_constraint "J"
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29 "4-bits unsigned value"
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30 (and (match_code "const_int")
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31 (match_test "ival>=0 && ival < 16")))
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32
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33 (define_constraint "K"
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34 "8-bits signed value"
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35 (and (match_code "const_int")
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36 (match_test " ival >= -128 && ival < 128")))
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37
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38 (define_constraint "M"
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39 "4-bits magnitude"
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40 (and (match_code "const_int")
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41 (match_test " abs(ival) < 16")))
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42
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43 (define_constraint "N"
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44 "10-bits signed value"
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45 (and (match_code "const_int")
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46 (match_test "ival >= -512 && ival < 512")))
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47
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48 (define_constraint "O"
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49 "16-bits signed value"
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50 (and (match_code "const_int")
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51 (match_test " ival >= -32768 && ival < 32768 ")))
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52
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53 (define_constraint "a"
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54 "See if this is an absolute address in memory"
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55 (and (match_code "mem")
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56 (match_test "picochip_absolute_memory_operand(op,mode) == 1")))
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57
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58 (define_register_constraint "k" "FRAME_REGS"
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59 "Frame regs")
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60 (define_register_constraint "f" "PTR_REGS"
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61 "Pointer regs")
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62 (define_register_constraint "t" "TWIN_REGS"
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63 "Twin regs")
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64
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