| ; 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))) |
| ()) |