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     ())
121