120 lines
4.1 KiB
Scheme
120 lines
4.1 KiB
Scheme
; Toshiba MeP Media Engine architecture description. -*- Scheme -*-
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; Copyright 2011 Free Software Foundation, Inc.
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;
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; Contributed by Red Hat Inc;
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;
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; This file is part of the GNU Binutils.
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;
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; This program is free software; you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation; either version 3 of the License, or
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; (at your option) any later version.
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;
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with this program; if not, write to the Free Software
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; Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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; MA 02110-1301, USA.
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; This file provides sample definitions for the UCI and DSP
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; instructions. It is incorporated into the overall description by
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; including it from a top-level file that includes all of the required
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; option files.
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; UCI option.
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(define-pmacro mep-ext1-isa () (ISA ext_core1))
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; uci instructions for ELFextension test
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; uci.elfext.1 $simm16
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; 1111_IIII_0000_0010 0001_iiii_iiii_iiii
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; simm16 = I[4:7]||i[20:31]
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; uci.elfext.2 $uimm16
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; 1111_IIII_0000_0010 0010_iiii_iiii_iiii
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; uimm16 = I[4:7]||i[20:31]
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; define simm16
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(df f-uci_elfext_1-hi "uci_elfext_1 simm16 hi 4s7" (mep-ext1-isa) 4 4 INT #f #f)
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(df f-uci_elfext_1-lo "uci_elfext_1 simm16 lo 20s31" (mep-ext1-isa) 20 12 UINT #f #f)
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(define-multi-ifield
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(name f-uci_elfext_1)
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(comment "16-bits uci_elfext_ signed constant")
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(attrs mep-ext1-isa)
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(mode INT)
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(subfields f-uci_elfext_1-hi f-uci_elfext_1-lo)
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(insert (sequence ()
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(set (ifield f-uci_elfext_1-hi) (srl (ifield f-uci_elfext_1) 12))
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(set (ifield f-uci_elfext_1-lo) (and (ifield f-uci_elfext_1) #xfff))))
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(extract (set (ifield f-uci_elfext_1)
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(or (sll (ifield f-uci_elfext_1-hi) 12)
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(ifield f-uci_elfext_1-lo))))
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)
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(dpop uci_elfext_1simm16 "signed imm (16 bits)" (mep-ext1-isa) h-sint f-uci_elfext_1 "signed16")
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; define uimm16
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(df f-uci_elfext_2-hi "uci_elfext_2 uimm16 hi 4u7" (mep-ext1-isa) 4 4 UINT #f #f)
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(df f-uci_elfext_2-lo "uci_elfext_2 uimm16 lo 20u31" (mep-ext1-isa) 20 12 UINT #f #f)
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(define-multi-ifield
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(name f-uci_elfext_2)
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(comment "16-bits uci_elfext_ unsigned constant")
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(attrs mep-ext1-isa)
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(mode UINT)
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(subfields f-uci_elfext_2-hi f-uci_elfext_2-lo)
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(insert (sequence ()
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(set (ifield f-uci_elfext_2-hi) (srl (ifield f-uci_elfext_2) 12))
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(set (ifield f-uci_elfext_2-lo) (and (ifield f-uci_elfext_2) #xfff))))
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(extract (set (ifield f-uci_elfext_2)
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(or (sll (ifield f-uci_elfext_2-hi) 12)
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(ifield f-uci_elfext_2-lo))))
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)
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(dpop uci_elfext_2uimm16 "unsigned imm (16 bits)" (mep-ext1-isa) h-uint f-uci_elfext_2 "unsigned16")
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; define sub-opcode
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(df f-uci_elfext-sub "sub-opcode for uci_elfext instructions" (mep-ext1-isa) 16 4 UINT #f #f)
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; define instruction
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(dni uci.elfext.1 "uci_elfext instruction 1" (OPTIONAL_UCI_INSN VOLATILE mep-ext1-isa)
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"uci.elfext.1 $uci_elfext_1simm16"
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(+ MAJ_15 (f-rm 0) (f-sub4 2) (f-uci_elfext-sub 1) uci_elfext_1simm16)
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(c-call "check_option_uci" pc)
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()
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)
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; define instruction
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(dni uci.elfext.2 "uci_elfext instruction 1" (OPTIONAL_UCI_INSN VOLATILE mep-ext1-isa)
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"uci.elfext.2 $uci_elfext_2uimm16"
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(+ MAJ_15 (f-rm 0) (f-sub4 2) (f-uci_elfext-sub 2) uci_elfext_2uimm16)
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(c-call "check_option_uci" pc)
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()
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)
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;; some general samples
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; UCI option.
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(dni uci "user defined instruction" (OPTIONAL_UCI_INSN mep-ext1-isa)
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"uci $rn,$rm,$code16"
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(+ MAJ_15 rn rm (f-sub4 2) code16)
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(sequence ()
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(c-call "check_option_uci" pc)
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(unimp "uci"))
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())
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; DSP option.
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(dni dsp "dsp instruction" (OPTIONAL_DSP_INSN mep-ext1-isa)
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"dsp $rn,$rm,$code16"
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(+ MAJ_15 rn rm (f-sub4 0) code16)
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(sequence ()
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(c-call "check_option_dsp" pc)
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(set pc (c-call USI "dsp_exception" pc)))
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())
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