1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/* ARC target-dependent stuff. Extension data structures.
Copyright (C) 1995-2021 Free Software Foundation, Inc.
This file is part of libopcodes.
This library 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, or (at your option)
any later version.
It 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 header file defines a table of extensions to the ARC processor
architecture. These extensions are read from the '.arcextmap' or
'.gnu.linkonce.arcextmap.<type>.<N>' sections in the ELF file which
is identified by the bfd parameter to the build_ARC_extmap function.
These extensions may include:
core registers
auxiliary registers
instructions
condition codes
Once the table has been constructed, accessor functions may be used
to retrieve information from it.
The build_ARC_extmap constructor function build_ARC_extmap may be
called as many times as required; it will re-initialize the table
each time. */
#ifndef ARC_EXTENSIONS_H
#define ARC_EXTENSIONS_H
#include "opcode/arc.h"
#ifdef __cplusplus
extern "C" {
#endif
#define IGNORE_FIRST_OPD 1
/* Define this if we do not want to encode instructions based on the
ARCompact Programmer's Reference. */
#define UNMANGLED
/* This defines the kinds of extensions which may be read from the
ections in the executable files. */
enum ExtOperType
{
EXT_INSTRUCTION = 0,
EXT_CORE_REGISTER = 1,
EXT_AUX_REGISTER = 2,
EXT_COND_CODE = 3,
EXT_INSTRUCTION32 = 4,
EXT_AC_INSTRUCTION = 4,
EXT_REMOVE_CORE_REG = 5,
EXT_LONG_CORE_REGISTER = 6,
EXT_AUX_REGISTER_EXTENDED = 7,
EXT_INSTRUCTION32_EXTENDED = 8,
EXT_CORE_REGISTER_CLASS = 9
};
enum ExtReadWrite
{
REG_INVALID,
REG_READ,
REG_WRITE,
REG_READWRITE
};
/* Macro used when generating the patterns for an extension
instruction. */
#define INSERT_XOP(OP, NAME, CODE, MASK, CPU, ARG, FLG) \
do { \
(OP)->name = NAME; \
(OP)->opcode = CODE; \
(OP)->mask = MASK; \
(OP)->cpu = CPU; \
(OP)->insn_class = ARITH; \
(OP)->subclass = NONE; \
memcpy ((OP)->operands, (ARG), MAX_INSN_ARGS); \
memcpy ((OP)->flags, (FLG), MAX_INSN_FLGS); \
(OP++); \
} while (0)
/* Typedef to hold the extension instruction definition. */
typedef struct ExtInstruction
{
/* Name. */
char *name;
/* Major opcode. */
char major;
/* Minor(sub) opcode. */
char minor;
/* Flags, holds the syntax class and modifiers. */
char flags;
/* Syntax class. Use by assembler. */
unsigned char syntax;
/* Syntax class modifier. Used by assembler. */
unsigned char modsyn;
/* Suffix class. Used by assembler. */
unsigned char suffix;
/* Pointer to the next extension instruction. */
struct ExtInstruction* next;
} extInstruction_t;
/* Constructor function. */
extern void build_ARC_extmap (bfd *);
/* Accessor functions. */
extern enum ExtReadWrite arcExtMap_coreReadWrite (int);
extern const char * arcExtMap_coreRegName (int);
extern const char * arcExtMap_auxRegName (unsigned);
extern const char * arcExtMap_condCodeName (int);
extern const extInstruction_t *arcExtMap_insn (int, unsigned long long);
extern struct arc_opcode *arcExtMap_genOpcode (const extInstruction_t *,
unsigned arc_target,
const char **errmsg);
/* Dump function (for debugging). */
extern void dump_ARC_extmap (void);
#ifdef __cplusplus
}
#endif
#endif /* ARC_EXTENSIONS_H */
|
