/* PDP-11 opcde list.
  Copyright (C) 2001-2024 Free Software Foundation, Inc.

  This file is part of GDB and GAS.

  GDB and GAS are 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.

  GDB and GAS are 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 GDB or GAS; see the file COPYING3.  If not, write to
  the Free Software Foundation, 51 Franklin Street - Fifth Floor,
  Boston, MA 02110-1301, USA.  */

/* PDP-11 opcode types.  */

#define PDP11_OPCODE_NO_OPS      0
#define PDP11_OPCODE_REG         1      /* register */
#define PDP11_OPCODE_OP          2      /* generic operand */
#define PDP11_OPCODE_REG_OP      3      /* register and generic operand */
#define PDP11_OPCODE_REG_OP_REV  4      /* register and generic operand,
                                          reversed syntax */
#define PDP11_OPCODE_AC_FOP      5      /* fpu accumulator and generic float
                                          operand */
#define PDP11_OPCODE_OP_OP       6      /* two generic operands */
#define PDP11_OPCODE_DISPL       7      /* pc-relative displacement */
#define PDP11_OPCODE_REG_DISPL   8      /* redister and pc-relative
                                          displacement */
#define PDP11_OPCODE_IMM8        9      /* 8-bit immediate */
#define PDP11_OPCODE_IMM6       10      /* 6-bit immediate */
#define PDP11_OPCODE_IMM3       11      /* 3-bit immediate */
#define PDP11_OPCODE_ILLEGAL    12      /* illegal instruction */
#define PDP11_OPCODE_FOP_AC     13      /* generic float argument, then fpu
                                          accumulator */
#define PDP11_OPCODE_FOP        14      /* generic float operand */
#define PDP11_OPCODE_AC_OP      15      /* fpu accumulator and generic int
                                          operand */
#define PDP11_OPCODE_OP_AC      16      /* generic int argument, then fpu
                                          accumulator */

/*
* PDP-11 instruction set extensions.
*
* Please keep the numbers low, as they are used as indices into
* an array.
*/

#define PDP11_NONE       0      /* not in instruction set */
#define PDP11_BASIC      1      /* basic instruction set (11/20 etc) */
#define PDP11_CSM        2      /* commercial instruction set */
#define PDP11_CIS        3      /* commercial instruction set */
#define PDP11_EIS        4      /* extended instruction set (11/45 etc) */
#define PDP11_FIS        5      /* KEV11 floating-point instructions */
#define PDP11_FPP        6      /* FP-11 floating-point instructions */
#define PDP11_LEIS       7      /* limited extended instruction set
                                  (11/40 etc) */
#define PDP11_MFPT       8      /* move from processor type */
#define PDP11_MPROC      9      /* multiprocessor instructions: tstset,
                                  wrtlck */
#define PDP11_MXPS      10      /* move from/to processor status */
#define PDP11_SPL       11      /* set priority level */
#define PDP11_UCODE     12      /* microcode instructions: ldub, med, xfc */
#define PDP11_EXT_NUM   13      /* total number of extension types */

struct pdp11_opcode
{
 const char *name;
 int opcode;
 int mask;
 int type;
 int extension;
};

extern const struct pdp11_opcode pdp11_opcodes[];
extern const struct pdp11_opcode pdp11_aliases[];
extern const int pdp11_num_opcodes, pdp11_num_aliases;

/* end of pdp11.h */