1 /* ARC target-dependent stuff. Extension data structures.
2 Copyright (C) 1995-2019 Free Software Foundation, Inc.
4 This file is part of libopcodes.
6 This library is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
11 It is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
14 License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
21 /*This header file defines a table of extensions to the ARC processor
22 architecture. These extensions are read from the '.arcextmap' or
23 '.gnu.linkonce.arcextmap.<type>.<N>' sections in the ELF file which
24 is identified by the bfd parameter to the build_ARC_extmap function.
26 These extensions may include:
32 Once the table has been constructed, accessor functions may be used
33 to retrieve information from it.
35 The build_ARC_extmap constructor function build_ARC_extmap may be
36 called as many times as required; it will re-initialize the table
39 #ifndef ARC_EXTENSIONS_H
40 #define ARC_EXTENSIONS_H
42 #include "opcode/arc.h"
48 #define IGNORE_FIRST_OPD 1
50 /* Define this if we do not want to encode instructions based on the
51 ARCompact Programmer's Reference. */
54 /* This defines the kinds of extensions which may be read from the
55 ections in the executable files. */
59 EXT_CORE_REGISTER = 1,
62 EXT_INSTRUCTION32 = 4,
63 EXT_AC_INSTRUCTION = 4,
64 EXT_REMOVE_CORE_REG = 5,
65 EXT_LONG_CORE_REGISTER = 6,
66 EXT_AUX_REGISTER_EXTENDED = 7,
67 EXT_INSTRUCTION32_EXTENDED = 8,
68 EXT_CORE_REGISTER_CLASS = 9
79 /* Macro used when generating the patterns for an extension
81 #define INSERT_XOP(OP, NAME, CODE, MASK, CPU, ARG, FLG) \
84 (OP)->opcode = CODE; \
87 (OP)->insn_class = ARITH; \
88 (OP)->subclass = NONE; \
89 memcpy ((OP)->operands, (ARG), MAX_INSN_ARGS); \
90 memcpy ((OP)->flags, (FLG), MAX_INSN_FLGS); \
94 /* Typedef to hold the extension instruction definition. */
95 typedef struct ExtInstruction
103 /* Minor(sub) opcode. */
106 /* Flags, holds the syntax class and modifiers. */
109 /* Syntax class. Use by assembler. */
110 unsigned char syntax;
112 /* Syntax class modifier. Used by assembler. */
113 unsigned char modsyn;
115 /* Suffix class. Used by assembler. */
116 unsigned char suffix;
118 /* Pointer to the next extension instruction. */
119 struct ExtInstruction* next;
122 /* Constructor function. */
123 extern void build_ARC_extmap (bfd *);
125 /* Accessor functions. */
126 extern enum ExtReadWrite arcExtMap_coreReadWrite (int);
127 extern const char * arcExtMap_coreRegName (int);
128 extern const char * arcExtMap_auxRegName (long);
129 extern const char * arcExtMap_condCodeName (int);
130 extern const extInstruction_t *arcExtMap_insn (int, unsigned long long);
131 extern struct arc_opcode *arcExtMap_genOpcode (const extInstruction_t *,
133 const char **errmsg);
135 /* Dump function (for debugging). */
136 extern void dump_ARC_extmap (void);
142 #endif /* ARC_EXTENSIONS_H */