-/* ARC target-dependent stuff. Extension data structures.
- Copyright 1995, 1997, 2000, 2001 Free Software Foundation, Inc.
+/* ARC target-dependent stuff. Extension data structures.
+ Copyright (C) 1995-2020 Free Software Foundation, Inc.
-This file is part of GDB.
+ This file is part of libopcodes.
-This program 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 2 of the License, or
-(at your option) any later version.
+ 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.
-This program 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.
+ 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ 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. */
-#ifndef ARCEXT_H
-#define ARCEXT_H
+/*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.
-enum {EXT_INSTRUCTION = 0};
-enum {EXT_CORE_REGISTER = 1};
-enum {EXT_AUX_REGISTER = 2};
-enum {EXT_COND_CODE = 3};
+ These extensions may include:
+ core registers
+ auxiliary registers
+ instructions
+ condition codes
-enum {NUM_EXT_INST = (0x1f-0x10+1) + (0x3f-0x09+1)};
-enum {NUM_EXT_CORE = 59-32+1};
-enum {NUM_EXT_COND = 0x1f-0x10+1};
+ Once the table has been constructed, accessor functions may be used
+ to retrieve information from it.
-struct ExtInstruction
-{
- char flags;
- char *name;
-};
+ 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
-struct ExtAuxRegister
+#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
{
- long address;
- char *name;
- struct ExtAuxRegister *next;
+ 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
};
-struct arcExtMap
+enum ExtReadWrite
{
- struct ExtAuxRegister *auxRegisters;
- struct ExtInstruction *instructions[NUM_EXT_INST];
- unsigned char *coreRegisters[NUM_EXT_CORE];
- unsigned char *condCodes[NUM_EXT_COND];
+ REG_INVALID,
+ REG_READ,
+ REG_WRITE,
+ REG_READWRITE
};
-extern int arcExtMap_add(void*, unsigned long);
-extern const char *arcExtMap_coreRegName(int);
-extern const char *arcExtMap_auxRegName(long);
-extern const char *arcExtMap_condCodeName(int);
-extern const char *arcExtMap_instName(int, int, int*);
-extern void build_ARC_extmap(bfd *);
+/* 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)
-#define IGNORE_FIRST_OPD 1
+/* 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 */
projects / thirdparty / binutils-gdb.git / blobdiff