| 1 |
6 |
jlechner |
; Toshiba MeP Media Engine architecture description. -*- Scheme -*-
|
| 2 |
|
|
; Copyright (C) 2001, 2002 Red Hat, Inc.
|
| 3 |
|
|
; This file is part of CGEN.
|
| 4 |
|
|
; See file COPYING.CGEN for details.
|
| 5 |
|
|
|
| 6 |
|
|
; This file provides sample definitions for the UCI and DSP
|
| 7 |
|
|
; instructions. It is incorporated into the overall description by
|
| 8 |
|
|
; including it from a top-level file that includes all of the required
|
| 9 |
|
|
; option files.
|
| 10 |
|
|
|
| 11 |
|
|
; UCI option.
|
| 12 |
|
|
|
| 13 |
|
|
(define-pmacro mep-ext1-isa () (ISA ext_core1))
|
| 14 |
|
|
|
| 15 |
|
|
|
| 16 |
|
|
; uci instructions for ELFextension test
|
| 17 |
|
|
|
| 18 |
|
|
; uci.elfext.1 $simm16
|
| 19 |
|
|
; 1111_IIII_0000_0010 0001_iiii_iiii_iiii
|
| 20 |
|
|
; simm16 = I[4:7]||i[20:31]
|
| 21 |
|
|
|
| 22 |
|
|
; uci.elfext.2 $uimm16
|
| 23 |
|
|
; 1111_IIII_0000_0010 0010_iiii_iiii_iiii
|
| 24 |
|
|
; uimm16 = I[4:7]||i[20:31]
|
| 25 |
|
|
|
| 26 |
|
|
; define simm16
|
| 27 |
|
|
(df f-uci_elfext_1-hi "uci_elfext_1 simm16 hi 4s7" (mep-ext1-isa) 4 4 INT #f #f)
|
| 28 |
|
|
(df f-uci_elfext_1-lo "uci_elfext_1 simm16 lo 20s31" (mep-ext1-isa) 20 12 UINT #f #f)
|
| 29 |
|
|
(define-multi-ifield
|
| 30 |
|
|
(name f-uci_elfext_1)
|
| 31 |
|
|
(comment "16-bits uci_elfext_ signed constant")
|
| 32 |
|
|
(attrs mep-ext1-isa)
|
| 33 |
|
|
(mode INT)
|
| 34 |
|
|
(subfields f-uci_elfext_1-hi f-uci_elfext_1-lo)
|
| 35 |
|
|
(insert (sequence ()
|
| 36 |
|
|
(set (ifield f-uci_elfext_1-hi) (srl (ifield f-uci_elfext_1) 12))
|
| 37 |
|
|
(set (ifield f-uci_elfext_1-lo) (and (ifield f-uci_elfext_1) #xfff))))
|
| 38 |
|
|
(extract (set (ifield f-uci_elfext_1)
|
| 39 |
|
|
(or (sll (ifield f-uci_elfext_1-hi) 12)
|
| 40 |
|
|
(ifield f-uci_elfext_1-lo))))
|
| 41 |
|
|
)
|
| 42 |
|
|
(dpop uci_elfext_1simm16 "signed imm (16 bits)" (mep-ext1-isa) h-sint f-uci_elfext_1 "signed16")
|
| 43 |
|
|
|
| 44 |
|
|
; define uimm16
|
| 45 |
|
|
(df f-uci_elfext_2-hi "uci_elfext_2 uimm16 hi 4u7" (mep-ext1-isa) 4 4 UINT #f #f)
|
| 46 |
|
|
(df f-uci_elfext_2-lo "uci_elfext_2 uimm16 lo 20u31" (mep-ext1-isa) 20 12 UINT #f #f)
|
| 47 |
|
|
(define-multi-ifield
|
| 48 |
|
|
(name f-uci_elfext_2)
|
| 49 |
|
|
(comment "16-bits uci_elfext_ unsigned constant")
|
| 50 |
|
|
(attrs mep-ext1-isa)
|
| 51 |
|
|
(mode UINT)
|
| 52 |
|
|
(subfields f-uci_elfext_2-hi f-uci_elfext_2-lo)
|
| 53 |
|
|
(insert (sequence ()
|
| 54 |
|
|
(set (ifield f-uci_elfext_2-hi) (srl (ifield f-uci_elfext_2) 12))
|
| 55 |
|
|
(set (ifield f-uci_elfext_2-lo) (and (ifield f-uci_elfext_2) #xfff))))
|
| 56 |
|
|
(extract (set (ifield f-uci_elfext_2)
|
| 57 |
|
|
(or (sll (ifield f-uci_elfext_2-hi) 12)
|
| 58 |
|
|
(ifield f-uci_elfext_2-lo))))
|
| 59 |
|
|
)
|
| 60 |
|
|
(dpop uci_elfext_2uimm16 "unsigned imm (16 bits)" (mep-ext1-isa) h-uint f-uci_elfext_2 "unsigned16")
|
| 61 |
|
|
|
| 62 |
|
|
; define sub-opcode
|
| 63 |
|
|
(df f-uci_elfext-sub "sub-opcode for uci_elfext instructions" (mep-ext1-isa) 16 4 UINT #f #f)
|
| 64 |
|
|
|
| 65 |
|
|
|
| 66 |
|
|
; define instruction
|
| 67 |
|
|
(dni uci.elfext.1 "uci_elfext instruction 1" (OPTIONAL_UCI_INSN VOLATILE mep-ext1-isa)
|
| 68 |
|
|
"uci.elfext.1 $uci_elfext_1simm16"
|
| 69 |
|
|
(+ MAJ_15 (f-rm 0) (f-sub4 2) (f-uci_elfext-sub 1) uci_elfext_1simm16)
|
| 70 |
|
|
(c-call "check_option_uci" pc)
|
| 71 |
|
|
()
|
| 72 |
|
|
)
|
| 73 |
|
|
|
| 74 |
|
|
; define instruction
|
| 75 |
|
|
(dni uci.elfext.2 "uci_elfext instruction 1" (OPTIONAL_UCI_INSN VOLATILE mep-ext1-isa)
|
| 76 |
|
|
"uci.elfext.2 $uci_elfext_2uimm16"
|
| 77 |
|
|
(+ MAJ_15 (f-rm 0) (f-sub4 2) (f-uci_elfext-sub 2) uci_elfext_2uimm16)
|
| 78 |
|
|
(c-call "check_option_uci" pc)
|
| 79 |
|
|
()
|
| 80 |
|
|
)
|
| 81 |
|
|
|
| 82 |
|
|
|
| 83 |
|
|
|
| 84 |
|
|
;; some general samples
|
| 85 |
|
|
; UCI option.
|
| 86 |
|
|
|
| 87 |
|
|
(dni uci "user defined instruction" (OPTIONAL_UCI_INSN mep-ext1-isa)
|
| 88 |
|
|
"uci $rn,$rm,$code16"
|
| 89 |
|
|
(+ MAJ_15 rn rm (f-sub4 2) code16)
|
| 90 |
|
|
(sequence ()
|
| 91 |
|
|
(c-call "check_option_uci" pc)
|
| 92 |
|
|
(unimp "uci"))
|
| 93 |
|
|
())
|
| 94 |
|
|
|
| 95 |
|
|
; DSP option.
|
| 96 |
|
|
|
| 97 |
|
|
(dni dsp "dsp instruction" (OPTIONAL_DSP_INSN mep-ext1-isa)
|
| 98 |
|
|
"dsp $rn,$rm,$code16"
|
| 99 |
|
|
(+ MAJ_15 rn rm (f-sub4 0) code16)
|
| 100 |
|
|
(sequence ()
|
| 101 |
|
|
(c-call "check_option_dsp" pc)
|
| 102 |
|
|
(set pc (c-call USI "dsp_exception" pc)))
|
| 103 |
|
|
())
|
