1 /* PDP-11 opcde list. 2 Copyright (C) 2001-2024 Free Software Foundation, Inc. 3 4 This file is part of GDB and GAS. 5 6 GDB and GAS are 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 GDB and GAS are distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GDB or GAS; see the file COPYING3. If not, write to 18 the Free Software Foundation, 51 Franklin Street - Fifth Floor, 19 Boston, MA 02110-1301, USA. */ 20 21 /* PDP-11 opcode types. */ 22 23 #define PDP11_OPCODE_NO_OPS 0 24 #define PDP11_OPCODE_REG 1 /* register */ 25 #define PDP11_OPCODE_OP 2 /* generic operand */ 26 #define PDP11_OPCODE_REG_OP 3 /* register and generic operand */ 27 #define PDP11_OPCODE_REG_OP_REV 4 /* register and generic operand, 28 reversed syntax */ 29 #define PDP11_OPCODE_AC_FOP 5 /* fpu accumulator and generic float 30 operand */ 31 #define PDP11_OPCODE_OP_OP 6 /* two generic operands */ 32 #define PDP11_OPCODE_DISPL 7 /* pc-relative displacement */ 33 #define PDP11_OPCODE_REG_DISPL 8 /* redister and pc-relative 34 displacement */ 35 #define PDP11_OPCODE_IMM8 9 /* 8-bit immediate */ 36 #define PDP11_OPCODE_IMM6 10 /* 6-bit immediate */ 37 #define PDP11_OPCODE_IMM3 11 /* 3-bit immediate */ 38 #define PDP11_OPCODE_ILLEGAL 12 /* illegal instruction */ 39 #define PDP11_OPCODE_FOP_AC 13 /* generic float argument, then fpu 40 accumulator */ 41 #define PDP11_OPCODE_FOP 14 /* generic float operand */ 42 #define PDP11_OPCODE_AC_OP 15 /* fpu accumulator and generic int 43 operand */ 44 #define PDP11_OPCODE_OP_AC 16 /* generic int argument, then fpu 45 accumulator */ 46 47 /* 48 * PDP-11 instruction set extensions. 49 * 50 * Please keep the numbers low, as they are used as indices into 51 * an array. 52 */ 53 54 #define PDP11_NONE 0 /* not in instruction set */ 55 #define PDP11_BASIC 1 /* basic instruction set (11/20 etc) */ 56 #define PDP11_CSM 2 /* commercial instruction set */ 57 #define PDP11_CIS 3 /* commercial instruction set */ 58 #define PDP11_EIS 4 /* extended instruction set (11/45 etc) */ 59 #define PDP11_FIS 5 /* KEV11 floating-point instructions */ 60 #define PDP11_FPP 6 /* FP-11 floating-point instructions */ 61 #define PDP11_LEIS 7 /* limited extended instruction set 62 (11/40 etc) */ 63 #define PDP11_MFPT 8 /* move from processor type */ 64 #define PDP11_MPROC 9 /* multiprocessor instructions: tstset, 65 wrtlck */ 66 #define PDP11_MXPS 10 /* move from/to processor status */ 67 #define PDP11_SPL 11 /* set priority level */ 68 #define PDP11_UCODE 12 /* microcode instructions: ldub, med, xfc */ 69 #define PDP11_EXT_NUM 13 /* total number of extension types */ 70 71 struct pdp11_opcode 72 { 73 const char *name; 74 int opcode; 75 int mask; 76 int type; 77 int extension; 78 }; 79 80 extern const struct pdp11_opcode pdp11_opcodes[]; 81 extern const struct pdp11_opcode pdp11_aliases[]; 82 extern const int pdp11_num_opcodes, pdp11_num_aliases; 83 84 /* end of pdp11.h */ 85