| 1 | /* ARC target-dependent stuff. Extension data structures. |
| 2 | Copyright (C) 1995-2020 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of libopcodes. |
| 5 | |
| 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) |
| 9 | any later version. |
| 10 | |
| 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. |
| 15 | |
| 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. */ |
| 20 | |
| 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. |
| 25 | |
| 26 | These extensions may include: |
| 27 | core registers |
| 28 | auxiliary registers |
| 29 | instructions |
| 30 | condition codes |
| 31 | |
| 32 | Once the table has been constructed, accessor functions may be used |
| 33 | to retrieve information from it. |
| 34 | |
| 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 |
| 37 | each time. */ |
| 38 | |
| 39 | #ifndef ARC_EXTENSIONS_H |
| 40 | #define ARC_EXTENSIONS_H |
| 41 | |
| 42 | #include "opcode/arc.h" |
| 43 | |
| 44 | #ifdef __cplusplus |
| 45 | extern "C" { |
| 46 | #endif |
| 47 | |
| 48 | #define IGNORE_FIRST_OPD 1 |
| 49 | |
| 50 | /* Define this if we do not want to encode instructions based on the |
| 51 | ARCompact Programmer's Reference. */ |
| 52 | #define UNMANGLED |
| 53 | |
| 54 | /* This defines the kinds of extensions which may be read from the |
| 55 | ections in the executable files. */ |
| 56 | enum ExtOperType |
| 57 | { |
| 58 | EXT_INSTRUCTION = 0, |
| 59 | EXT_CORE_REGISTER = 1, |
| 60 | EXT_AUX_REGISTER = 2, |
| 61 | EXT_COND_CODE = 3, |
| 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 |
| 69 | }; |
| 70 | |
| 71 | enum ExtReadWrite |
| 72 | { |
| 73 | REG_INVALID, |
| 74 | REG_READ, |
| 75 | REG_WRITE, |
| 76 | REG_READWRITE |
| 77 | }; |
| 78 | |
| 79 | /* Macro used when generating the patterns for an extension |
| 80 | instruction. */ |
| 81 | #define INSERT_XOP(OP, NAME, CODE, MASK, CPU, ARG, FLG) \ |
| 82 | do { \ |
| 83 | (OP)->name = NAME; \ |
| 84 | (OP)->opcode = CODE; \ |
| 85 | (OP)->mask = MASK; \ |
| 86 | (OP)->cpu = CPU; \ |
| 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); \ |
| 91 | (OP++); \ |
| 92 | } while (0) |
| 93 | |
| 94 | /* Typedef to hold the extension instruction definition. */ |
| 95 | typedef struct ExtInstruction |
| 96 | { |
| 97 | /* Name. */ |
| 98 | char *name; |
| 99 | |
| 100 | /* Major opcode. */ |
| 101 | char major; |
| 102 | |
| 103 | /* Minor(sub) opcode. */ |
| 104 | char minor; |
| 105 | |
| 106 | /* Flags, holds the syntax class and modifiers. */ |
| 107 | char flags; |
| 108 | |
| 109 | /* Syntax class. Use by assembler. */ |
| 110 | unsigned char syntax; |
| 111 | |
| 112 | /* Syntax class modifier. Used by assembler. */ |
| 113 | unsigned char modsyn; |
| 114 | |
| 115 | /* Suffix class. Used by assembler. */ |
| 116 | unsigned char suffix; |
| 117 | |
| 118 | /* Pointer to the next extension instruction. */ |
| 119 | struct ExtInstruction* next; |
| 120 | } extInstruction_t; |
| 121 | |
| 122 | /* Constructor function. */ |
| 123 | extern void build_ARC_extmap (bfd *); |
| 124 | |
| 125 | /* Accessor functions. */ |
| 126 | extern enum ExtReadWrite arcExtMap_coreReadWrite (int); |
| 127 | extern const char * arcExtMap_coreRegName (int); |
| 128 | extern const char * arcExtMap_auxRegName (unsigned); |
| 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 *, |
| 132 | unsigned arc_target, |
| 133 | const char **errmsg); |
| 134 | |
| 135 | /* Dump function (for debugging). */ |
| 136 | extern void dump_ARC_extmap (void); |
| 137 | |
| 138 | #ifdef __cplusplus |
| 139 | } |
| 140 | #endif |
| 141 | |
| 142 | #endif /* ARC_EXTENSIONS_H */ |