/* mmix.h -- Header file for MMIX opcode table   Copyright (C) 2001-2026 Free Software Foundation, Inc.   Written by Hans-Peter Nilsson (hp@bitrange.com)    This file is part of GDB, GAS, and the GNU binutils.    GDB, GAS, and the GNU binutils are free software; you can redistribute   them and/or modify them 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, GAS, and the GNU binutils are distributed in the hope that they   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 file; see the file COPYING3.  If not, write to the Free   Software Foundation, 51 Franklin Street - Fifth Floor, Boston,   MA 02110-1301, USA.  */ /* We could have just a char*[] table indexed by the register number, but   that would not allow for synonyms.  The table is terminated with an   entry with a NULL name.  */struct mmix_spec_reg{  const char *name;  unsigned int number;}; /* General indication of the type of instruction.  */enum mmix_insn_type {   mmix_type_pseudo,   mmix_type_normal,   mmix_type_branch,   mmix_type_condbranch,   mmix_type_memaccess_octa,   mmix_type_memaccess_tetra,   mmix_type_memaccess_wyde,   mmix_type_memaccess_byte,   mmix_type_memaccess_block,   mmix_type_jsr }; /* Type of operands an instruction takes.  Use when parsing assembly code   and disassembling.  */enum mmix_operands_type {   mmix_operands_none = 0,    /* All operands are registers: "$X,$Y,$Z".  */   mmix_operands_regs,    /* "$X,YZ", like SETH.  */   mmix_operands_reg_yz,    /* The regular "$X,$Y,$Z|Z".      The Z is optional; if only "$X,$Y" is given, then "$X,$Y,0" is      assumed.  */   mmix_operands_regs_z_opt,    /* The regular "$X,$Y,$Z|Z".  */   mmix_operands_regs_z,    /* "Address"; only JMP.  Zero operands allowed unless GNU syntax.  */   mmix_operands_jmp,    /* "$X|X,$Y,$Z|Z": PUSHGO; like "3", but X can be expressed as an      integer.  */   mmix_operands_pushgo,    /* Two registers or a register and a byte, like FLOT, possibly with      rounding: "$X,$Z|Z" or "$X,ROUND_MODE,$Z|Z".  */   mmix_operands_roundregs_z,    /* "X,YZ", POP.  Unless GNU syntax, zero or one operand is allowed.  */   mmix_operands_pop,    /* Two registers, possibly with rounding: "$X,$Z" or      "$X,ROUND_MODE,$Z".  */   mmix_operands_roundregs,    /* "XYZ", like SYNC.  */   mmix_operands_sync,    /* "X,$Y,$Z|Z", like SYNCD.  */   mmix_operands_x_regs_z,    /* "$X,Y,$Z|Z", like NEG and NEGU.  The Y field is optional, default 0.  */   mmix_operands_neg,    /* "$X,Address, like GETA or branches.  */   mmix_operands_regaddr,    /* "$X|X,Address, like PUSHJ.  */   mmix_operands_pushj,    /* "$X,spec_reg"; GET.  */   mmix_operands_get,    /* "spec_reg,$Z|Z"; PUT.  */   mmix_operands_put,    /* Two registers, "$X,$Y".  */   mmix_operands_set,    /* "$X,0"; SAVE.  */   mmix_operands_save,    /* "0,$Z"; UNSAVE. */   mmix_operands_unsave,    /* "X,Y,Z"; like SWYM or TRAP.  Zero (or 1 if GNU syntax) to three      operands, interpreted as 0; XYZ; X, YZ and X, Y, Z.  */   mmix_operands_xyz_opt,    /* Just "Z", like RESUME.  Unless GNU syntax, the operand can be omitted      and will then be assumed zero.  */   mmix_operands_resume,    /* These are specials to handle that pseudo-directives are specified      like ordinary insns when being mmixal-compatible.  They signify the      specific pseudo-directive rather than the operands type.  */    /* LOC.  */   mmix_operands_loc,    /* PREFIX.  */   mmix_operands_prefix,    /* BYTE.  */   mmix_operands_byte,    /* WYDE.  */   mmix_operands_wyde,    /* TETRA.  */   mmix_operands_tetra,    /* OCTA.  */   mmix_operands_octa,    /* LOCAL.  */   mmix_operands_local,    /* BSPEC.  */   mmix_operands_bspec,    /* ESPEC.  */   mmix_operands_espec, }; struct mmix_opcode {   const char *name;   unsigned long match;   unsigned long lose;   enum mmix_operands_type operands;    /* This is used by the disassembly function.  */   enum mmix_insn_type type; }; /* Declare the actual tables.  */extern const struct mmix_opcode mmix_opcodes[]; /* This one is terminated with an entry with a NULL name.  */extern const struct mmix_spec_reg mmix_spec_regs[]; /* Some insn values we use when padding and synthesizing address loads.  */#define IMM_OFFSET_BIT 1#define COND_INV_BIT 0x8#define PRED_INV_BIT 0x10 #define PUSHGO_INSN_BYTE 0xbeu#define GO_INSN_BYTE 0x9eu#define SETL_INSN_BYTE 0xe3u#define INCML_INSN_BYTE 0xe6u#define INCMH_INSN_BYTE 0xe5u#define INCH_INSN_BYTE 0xe4u#define SWYM_INSN_BYTE 0xfdu#define JMP_INSN_BYTE 0xf0u /* We can have 256 - 32 (local registers) - 1 ($255 is not allocatable)   global registers.  */#define MAX_GREGS 223