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Diffstat (limited to 'cpu/mep-sample-ucidsp.cpu')
| -rw-r--r-- | cpu/mep-sample-ucidsp.cpu | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/cpu/mep-sample-ucidsp.cpu b/cpu/mep-sample-ucidsp.cpu new file mode 100644 index 0000000..52946ac --- /dev/null +++ b/cpu/mep-sample-ucidsp.cpu @@ -0,0 +1,120 @@ +; Toshiba MeP Media Engine architecture description. -*- Scheme -*- +; Copyright 2011 Free Software Foundation, Inc. +; +; Contributed by Red Hat Inc; +; +; This file is part of the GNU Binutils. +; +; This program 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 of the License, or +; (at your option) any later version. +; +; This program 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 this program; if not, write to the Free Software +; Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, +; MA 02110-1301, USA. + +; This file provides sample definitions for the UCI and DSP +; instructions. It is incorporated into the overall description by +; including it from a top-level file that includes all of the required +; option files. + +; UCI option. + +(define-pmacro mep-ext1-isa () (ISA ext_core1)) + + +; uci instructions for ELFextension test + +; uci.elfext.1 $simm16 +; 1111_IIII_0000_0010 0001_iiii_iiii_iiii +; simm16 = I[4:7]||i[20:31] + +; uci.elfext.2 $uimm16 +; 1111_IIII_0000_0010 0010_iiii_iiii_iiii +; uimm16 = I[4:7]||i[20:31] + +; define simm16 +(df f-uci_elfext_1-hi "uci_elfext_1 simm16 hi 4s7" (mep-ext1-isa) 4 4 INT #f #f) +(df f-uci_elfext_1-lo "uci_elfext_1 simm16 lo 20s31" (mep-ext1-isa) 20 12 UINT #f #f) +(define-multi-ifield + (name f-uci_elfext_1) + (comment "16-bits uci_elfext_ signed constant") + (attrs mep-ext1-isa) + (mode INT) + (subfields f-uci_elfext_1-hi f-uci_elfext_1-lo) + (insert (sequence () + (set (ifield f-uci_elfext_1-hi) (srl (ifield f-uci_elfext_1) 12)) + (set (ifield f-uci_elfext_1-lo) (and (ifield f-uci_elfext_1) #xfff)))) + (extract (set (ifield f-uci_elfext_1) + (or (sll (ifield f-uci_elfext_1-hi) 12) + (ifield f-uci_elfext_1-lo)))) + ) +(dpop uci_elfext_1simm16 "signed imm (16 bits)" (mep-ext1-isa) h-sint f-uci_elfext_1 "signed16") + +; define uimm16 +(df f-uci_elfext_2-hi "uci_elfext_2 uimm16 hi 4u7" (mep-ext1-isa) 4 4 UINT #f #f) +(df f-uci_elfext_2-lo "uci_elfext_2 uimm16 lo 20u31" (mep-ext1-isa) 20 12 UINT #f #f) +(define-multi-ifield + (name f-uci_elfext_2) + (comment "16-bits uci_elfext_ unsigned constant") + (attrs mep-ext1-isa) + (mode UINT) + (subfields f-uci_elfext_2-hi f-uci_elfext_2-lo) + (insert (sequence () + (set (ifield f-uci_elfext_2-hi) (srl (ifield f-uci_elfext_2) 12)) + (set (ifield f-uci_elfext_2-lo) (and (ifield f-uci_elfext_2) #xfff)))) + (extract (set (ifield f-uci_elfext_2) + (or (sll (ifield f-uci_elfext_2-hi) 12) + (ifield f-uci_elfext_2-lo)))) + ) +(dpop uci_elfext_2uimm16 "unsigned imm (16 bits)" (mep-ext1-isa) h-uint f-uci_elfext_2 "unsigned16") + +; define sub-opcode +(df f-uci_elfext-sub "sub-opcode for uci_elfext instructions" (mep-ext1-isa) 16 4 UINT #f #f) + + +; define instruction +(dni uci.elfext.1 "uci_elfext instruction 1" (OPTIONAL_UCI_INSN VOLATILE mep-ext1-isa) + "uci.elfext.1 $uci_elfext_1simm16" + (+ MAJ_15 (f-rm 0) (f-sub4 2) (f-uci_elfext-sub 1) uci_elfext_1simm16) + (c-call "check_option_uci" pc) + () + ) + +; define instruction +(dni uci.elfext.2 "uci_elfext instruction 1" (OPTIONAL_UCI_INSN VOLATILE mep-ext1-isa) + "uci.elfext.2 $uci_elfext_2uimm16" + (+ MAJ_15 (f-rm 0) (f-sub4 2) (f-uci_elfext-sub 2) uci_elfext_2uimm16) + (c-call "check_option_uci" pc) + () + ) + + + +;; some general samples +; UCI option. + +(dni uci "user defined instruction" (OPTIONAL_UCI_INSN mep-ext1-isa) + "uci $rn,$rm,$code16" + (+ MAJ_15 rn rm (f-sub4 2) code16) + (sequence () + (c-call "check_option_uci" pc) + (unimp "uci")) + ()) + +; DSP option. + +(dni dsp "dsp instruction" (OPTIONAL_DSP_INSN mep-ext1-isa) + "dsp $rn,$rm,$code16" + (+ MAJ_15 rn rm (f-sub4 0) code16) + (sequence () + (c-call "check_option_dsp" pc) + (set pc (c-call USI "dsp_exception" pc))) + ()) |