source: trunk/libs/newlib/src/include/opcode/moxie.h @ 507

Last change on this file since 507 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc

File size: 2.8 KB
Line 
1/* Definitions for decoding the moxie opcode table.
2   Copyright 2009 Free Software Foundation, Inc.
3   Contributed by Anthony Green (green@moxielogic.com).
4
5   This program is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 3 of the License, or
8   (at your option) any later version.
9
10   This program is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License
16   along with this program; if not, write to the Free Software
17   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
18   02110-1301, USA.  */
19
20/* Form 1 instructions come in different flavors:
21
22    Some have no arguments                          (MOXIE_F1_NARG)
23    Some only use the A operand                     (MOXIE_F1_A)
24    Some use A and B registers                      (MOXIE_F1_AB)
25    Some use A and consume a 4 byte immediate value (MOXIE_F1_A4)
26    Some use just a 4 byte immediate value          (MOXIE_F1_4)
27    Some use just a 4 byte memory address           (MOXIE_F1_M)
28    Some use B and an indirect A                    (MOXIE_F1_AiB)
29    Some use A and an indirect B                    (MOXIE_F1_ABi)
30    Some consume a 4 byte immediate value and use X (MOXIE_F1_4A)
31    Some use B and an indirect A plus 4 bytes       (MOXIE_F1_AiB4)
32    Some use A and an indirect B plus 4 bytes       (MOXIE_F1_ABi4)
33
34  Form 2 instructions also come in different flavors:
35
36    Some have no arguments                          (MOXIE_F2_NARG)
37    Some use the A register and an 8-bit value      (MOXIE_F2_A8V)
38
39  Form 3 instructions also come in different flavors:
40
41    Some have no arguments                          (MOXIE_F3_NARG)
42    Some have a 10-bit PC relative operand          (MOXIE_F3_PCREL).  */
43
44#define MOXIE_F1_NARG 0x100
45#define MOXIE_F1_A    0x101
46#define MOXIE_F1_AB   0x102
47/* #define MOXIE_F1_ABC  0x103 */
48#define MOXIE_F1_A4   0x104
49#define MOXIE_F1_4    0x105
50#define MOXIE_F1_AiB  0x106
51#define MOXIE_F1_ABi  0x107
52#define MOXIE_F1_4A   0x108
53#define MOXIE_F1_AiB4 0x109
54#define MOXIE_F1_ABi4 0x10a
55#define MOXIE_F1_M    0x10b
56
57#define MOXIE_F2_NARG 0x200
58#define MOXIE_F2_A8V  0x201
59
60#define MOXIE_F3_NARG  0x300
61#define MOXIE_F3_PCREL 0x301
62
63#define MOXIE_BAD     0x400
64
65typedef struct moxie_opc_info_t
66{
67  short         opcode;
68  unsigned      itype;
69  const char *  name;
70} moxie_opc_info_t;
71
72extern const moxie_opc_info_t moxie_form1_opc_info[128];
73extern const moxie_opc_info_t moxie_form2_opc_info[4];
74extern const moxie_opc_info_t moxie_form3_opc_info[16];
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