cpu/mep-sample-ucidsp.cpu

   1 ; Toshiba MeP Media Engine architecture description.  -*- Scheme -*-
   2 ; Copyright 2011 Free Software Foundation, Inc.
   3 ;
   4 ; Contributed by Red Hat Inc;
   5 ;
   6 ; This file is part of the GNU Binutils.
   7 ;
   8 ; This program is free software; you can redistribute it and/or modify
   9 ; it under the terms of the GNU General Public License as published by
  10 ; the Free Software Foundation; either version 3 of the License, or
  11 ; (at your option) any later version.
  12 ;
  13 ; This program is distributed in the hope that it will be useful,
  14 ; but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 ; GNU General Public License for more details.
  17 ;
  18 ; You should have received a copy of the GNU General Public License
  19 ; along with this program; if not, write to the Free Software
  20 ; Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21 ; MA 02110-1301, USA.
  22
  23 ; This file provides sample definitions for the UCI and DSP
  24 ; instructions.  It is incorporated into the overall description by
  25 ; including it from a top-level file that includes all of the required
  26 ; option files.
  27
  28 ; UCI option.
  29
  30 (define-pmacro mep-ext1-isa () (ISA ext_core1))
  31
  32
  33 ; uci instructions for ELFextension test
  34
  35 ; uci.elfext.1    $simm16
  36 ; 1111_IIII_0000_0010 0001_iiii_iiii_iiii
  37 ; simm16 = I[4:7]||i[20:31]
  38
  39 ; uci.elfext.2    $uimm16
  40 ; 1111_IIII_0000_0010 0010_iiii_iiii_iiii
  41 ; uimm16 = I[4:7]||i[20:31]
  42
  43 ; define simm16
  44 (df f-uci_elfext_1-hi  "uci_elfext_1 simm16 hi 4s7"   (mep-ext1-isa)  4  4  INT #f #f)
  45 (df f-uci_elfext_1-lo  "uci_elfext_1 simm16 lo 20s31" (mep-ext1-isa) 20 12 UINT #f #f)
  46 (define-multi-ifield
  47   (name f-uci_elfext_1)
  48   (comment "16-bits uci_elfext_ signed constant")
  49   (attrs mep-ext1-isa)
  50   (mode INT)
  51   (subfields f-uci_elfext_1-hi f-uci_elfext_1-lo)
  52   (insert (sequence ()
  53                     (set (ifield f-uci_elfext_1-hi) (srl (ifield f-uci_elfext_1) 12))
  54                     (set (ifield f-uci_elfext_1-lo) (and (ifield f-uci_elfext_1) #xfff))))
  55   (extract (set (ifield f-uci_elfext_1)
  56                 (or (sll (ifield f-uci_elfext_1-hi) 12)
  57                     (ifield f-uci_elfext_1-lo))))
  58   )
  59 (dpop uci_elfext_1simm16    "signed imm (16 bits)"  (mep-ext1-isa) h-sint  f-uci_elfext_1  "signed16")
  60
  61 ; define uimm16
  62 (df f-uci_elfext_2-hi  "uci_elfext_2 uimm16 hi 4u7"   (mep-ext1-isa)  4  4 UINT #f #f)
  63 (df f-uci_elfext_2-lo  "uci_elfext_2 uimm16 lo 20u31" (mep-ext1-isa) 20 12 UINT #f #f)
  64 (define-multi-ifield
  65   (name f-uci_elfext_2)
  66   (comment "16-bits uci_elfext_ unsigned constant")
  67   (attrs mep-ext1-isa)
  68   (mode UINT)
  69   (subfields f-uci_elfext_2-hi f-uci_elfext_2-lo)
  70   (insert (sequence ()
  71                     (set (ifield f-uci_elfext_2-hi) (srl (ifield f-uci_elfext_2) 12))
  72                     (set (ifield f-uci_elfext_2-lo) (and (ifield f-uci_elfext_2) #xfff))))
  73   (extract (set (ifield f-uci_elfext_2)
  74                 (or (sll (ifield f-uci_elfext_2-hi) 12)
  75                     (ifield f-uci_elfext_2-lo))))
  76   )
  77 (dpop uci_elfext_2uimm16    "unsigned imm (16 bits)"  (mep-ext1-isa) h-uint  f-uci_elfext_2  "unsigned16")
  78
  79 ; define sub-opcode
  80 (df f-uci_elfext-sub  "sub-opcode for uci_elfext instructions"  (mep-ext1-isa) 16 4 UINT #f #f)
  81
  82
  83 ; define instruction
  84 (dni uci.elfext.1 "uci_elfext instruction 1" (OPTIONAL_UCI_INSN VOLATILE mep-ext1-isa)
  85          "uci.elfext.1 $uci_elfext_1simm16"
  86          (+ MAJ_15 (f-rm 0) (f-sub4 2) (f-uci_elfext-sub 1) uci_elfext_1simm16)
  87          (c-call "check_option_uci" pc)
  88          ()
  89          )
  90
  91 ; define instruction
  92 (dni uci.elfext.2 "uci_elfext instruction 1" (OPTIONAL_UCI_INSN VOLATILE mep-ext1-isa)
  93          "uci.elfext.2 $uci_elfext_2uimm16"
  94          (+ MAJ_15 (f-rm 0) (f-sub4 2) (f-uci_elfext-sub 2) uci_elfext_2uimm16)
  95          (c-call "check_option_uci" pc)
  96          ()
  97          )
  98
  99
 100
 101 ;; some general samples
 102 ; UCI option.
 103
 104 (dni uci "user defined instruction" (OPTIONAL_UCI_INSN mep-ext1-isa)
 105      "uci $rn,$rm,$code16"
 106      (+ MAJ_15 rn rm (f-sub4 2) code16)
 107      (sequence ()
 108                (c-call "check_option_uci" pc)
 109                (unimp "uci"))
 110      ())
 111
 112 ; DSP option.
 113
 114 (dni dsp "dsp instruction" (OPTIONAL_DSP_INSN mep-ext1-isa)
 115      "dsp $rn,$rm,$code16"
 116      (+ MAJ_15 rn rm (f-sub4 0) code16)
 117      (sequence ()
 118                (c-call "check_option_dsp" pc)
 119                (set pc (c-call USI "dsp_exception" pc)))
 120      ())