| /* 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 */ |