1 /* s390.h -- Header file for S390 opcode table 2 Copyright (C) 2000-2014 Free Software Foundation, Inc. 3 Contributed by Martin Schwidefsky (schwidefsky (at) de.ibm.com). 4 5 This file is part of BFD, the Binary File Descriptor library. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 20 02110-1301, USA. */ 21 22 #ifndef S390_H 23 #define S390_H 24 25 /* List of instruction sets variations. */ 26 27 enum s390_opcode_mode_val 28 { 29 S390_OPCODE_ESA = 0, 30 S390_OPCODE_ZARCH 31 }; 32 33 enum s390_opcode_cpu_val 34 { 35 S390_OPCODE_G5 = 0, 36 S390_OPCODE_G6, 37 S390_OPCODE_Z900, 38 S390_OPCODE_Z990, 39 S390_OPCODE_Z9_109, 40 S390_OPCODE_Z9_EC, 41 S390_OPCODE_Z10, 42 S390_OPCODE_Z196, 43 S390_OPCODE_ZEC12, 44 S390_OPCODE_MAXCPU 45 }; 46 47 /* The opcode table is an array of struct s390_opcode. */ 48 49 struct s390_opcode 50 { 51 /* The opcode name. */ 52 const char * name; 53 54 /* The opcode itself. Those bits which will be filled in with 55 operands are zeroes. */ 56 unsigned char opcode[6]; 57 58 /* The opcode mask. This is used by the disassembler. This is a 59 mask containing ones indicating those bits which must match the 60 opcode field, and zeroes indicating those bits which need not 61 match (and are presumably filled in by operands). */ 62 unsigned char mask[6]; 63 64 /* The opcode length in bytes. */ 65 int oplen; 66 67 /* An array of operand codes. Each code is an index into the 68 operand table. They appear in the order which the operands must 69 appear in assembly code, and are terminated by a zero. */ 70 unsigned char operands[6]; 71 72 /* Bitmask of execution modes this opcode is available for. */ 73 unsigned int modes; 74 75 /* First cpu this opcode is available for. */ 76 enum s390_opcode_cpu_val min_cpu; 77 }; 78 79 /* The table itself is sorted by major opcode number, and is otherwise 80 in the order in which the disassembler should consider 81 instructions. */ 82 extern const struct s390_opcode s390_opcodes[]; 83 extern const int s390_num_opcodes; 84 85 /* A opcode format table for the .insn pseudo mnemonic. */ 86 extern const struct s390_opcode s390_opformats[]; 87 extern const int s390_num_opformats; 88 89 /* Values defined for the flags field of a struct powerpc_opcode. */ 90 91 /* The operands table is an array of struct s390_operand. */ 92 93 struct s390_operand 94 { 95 /* The number of bits in the operand. */ 96 int bits; 97 98 /* How far the operand is left shifted in the instruction. */ 99 int shift; 100 101 /* One bit syntax flags. */ 102 unsigned long flags; 103 }; 104 105 /* Elements in the table are retrieved by indexing with values from 106 the operands field of the powerpc_opcodes table. */ 107 108 extern const struct s390_operand s390_operands[]; 109 110 /* Values defined for the flags field of a struct s390_operand. */ 111 112 /* This operand names a register. The disassembler uses this to print 113 register names with a leading 'r'. */ 114 #define S390_OPERAND_GPR 0x1 115 116 /* This operand names a floating point register. The disassembler 117 prints these with a leading 'f'. */ 118 #define S390_OPERAND_FPR 0x2 119 120 /* This operand names an access register. The disassembler 121 prints these with a leading 'a'. */ 122 #define S390_OPERAND_AR 0x4 123 124 /* This operand names a control register. The disassembler 125 prints these with a leading 'c'. */ 126 #define S390_OPERAND_CR 0x8 127 128 /* This operand is a displacement. */ 129 #define S390_OPERAND_DISP 0x10 130 131 /* This operand names a base register. */ 132 #define S390_OPERAND_BASE 0x20 133 134 /* This operand names an index register, it can be skipped. */ 135 #define S390_OPERAND_INDEX 0x40 136 137 /* This operand is a relative branch displacement. The disassembler 138 prints these symbolically if possible. */ 139 #define S390_OPERAND_PCREL 0x80 140 141 /* This operand takes signed values. */ 142 #define S390_OPERAND_SIGNED 0x100 143 144 /* This operand is a length. */ 145 #define S390_OPERAND_LENGTH 0x200 146 147 /* This operand is optional. Only a single operand at the end of 148 the instruction may be optional. */ 149 #define S390_OPERAND_OPTIONAL 0x400 150 151 /* The operand needs to be a valid GP or FP register pair. */ 152 #define S390_OPERAND_REG_PAIR 0x800 153 154 #endif /* S390_H */ 155
