| 1 | /* d10v.h -- Header file for D10V opcode table |
| 2 | Copyright 1996, 1997, 1998 Free Software Foundation, Inc. |
| 3 | Written by Martin Hunt (hunt@cygnus.com), Cygnus Support |
| 4 | |
| 5 | This file is part of GDB, GAS, and the GNU binutils. |
| 6 | |
| 7 | GDB, GAS, and the GNU binutils are free software; you can redistribute |
| 8 | them and/or modify them under the terms of the GNU General Public |
| 9 | License as published by the Free Software Foundation; either version |
| 10 | 1, or (at your option) any later version. |
| 11 | |
| 12 | GDB, GAS, and the GNU binutils are distributed in the hope that they |
| 13 | will be useful, but WITHOUT ANY WARRANTY; without even the implied |
| 14 | warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 15 | the 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 file; see the file COPYING. If not, write to the Free |
| 19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | #ifndef D10V_H |
| 22 | #define D10V_H |
| 23 | |
| 24 | /* Format Specifier */ |
| 25 | #define FM00 0 |
| 26 | #define FM01 0x40000000 |
| 27 | #define FM10 0x80000000 |
| 28 | #define FM11 0xC0000000 |
| 29 | |
| 30 | #define NOP 0x5e00 |
| 31 | #define OPCODE_DIVS 0x14002800 |
| 32 | |
| 33 | /* The opcode table is an array of struct d10v_opcode. */ |
| 34 | |
| 35 | struct d10v_opcode |
| 36 | { |
| 37 | /* The opcode name. */ |
| 38 | const char *name; |
| 39 | |
| 40 | /* the opcode format */ |
| 41 | int format; |
| 42 | |
| 43 | /* These numbers were picked so we can do if( i & SHORT_OPCODE) */ |
| 44 | #define SHORT_OPCODE 1 |
| 45 | #define LONG_OPCODE 8 |
| 46 | #define SHORT_2 1 /* short with 2 operands */ |
| 47 | #define SHORT_B 3 /* short with 8-bit branch */ |
| 48 | #define LONG_B 8 /* long with 16-bit branch */ |
| 49 | #define LONG_L 10 /* long with 3 operands */ |
| 50 | #define LONG_R 12 /* reserved */ |
| 51 | |
| 52 | /* just a placeholder for variable-length instructions */ |
| 53 | /* for example, "bra" will be a fake for "bra.s" and bra.l" */ |
| 54 | /* which will immediately follow in the opcode table. */ |
| 55 | #define OPCODE_FAKE 32 |
| 56 | |
| 57 | /* the number of cycles */ |
| 58 | int cycles; |
| 59 | |
| 60 | /* the execution unit(s) used */ |
| 61 | int unit; |
| 62 | #define EITHER 0 |
| 63 | #define IU 1 |
| 64 | #define MU 2 |
| 65 | #define BOTH 3 |
| 66 | |
| 67 | /* execution type; parallel or sequential */ |
| 68 | /* this field is used to decide if two instructions */ |
| 69 | /* can be executed in parallel */ |
| 70 | int exec_type; |
| 71 | #define PARONLY 1 /* parallel only */ |
| 72 | #define SEQ 2 /* must be sequential */ |
| 73 | #define PAR 4 /* may be parallel */ |
| 74 | #define BRANCH_LINK 8 /* subroutine call. must be aligned */ |
| 75 | #define RMEM 16 /* reads memory */ |
| 76 | #define WMEM 32 /* writes memory */ |
| 77 | #define RF0 64 /* reads f0 */ |
| 78 | #define WF0 128 /* modifies f0 */ |
| 79 | #define WCAR 256 /* write Carry */ |
| 80 | #define BRANCH 512 /* branch, no link */ |
| 81 | |
| 82 | /* the opcode */ |
| 83 | long opcode; |
| 84 | |
| 85 | /* mask. if( (i & mask) == opcode ) then match */ |
| 86 | long mask; |
| 87 | |
| 88 | /* An array of operand codes. Each code is an index into the |
| 89 | operand table. They appear in the order which the operands must |
| 90 | appear in assembly code, and are terminated by a zero. */ |
| 91 | unsigned char operands[6]; |
| 92 | }; |
| 93 | |
| 94 | /* The table itself is sorted by major opcode number, and is otherwise |
| 95 | in the order in which the disassembler should consider |
| 96 | instructions. */ |
| 97 | extern const struct d10v_opcode d10v_opcodes[]; |
| 98 | extern const int d10v_num_opcodes; |
| 99 | |
| 100 | /* The operands table is an array of struct d10v_operand. */ |
| 101 | struct d10v_operand |
| 102 | { |
| 103 | /* The number of bits in the operand. */ |
| 104 | int bits; |
| 105 | |
| 106 | /* How far the operand is left shifted in the instruction. */ |
| 107 | int shift; |
| 108 | |
| 109 | /* One bit syntax flags. */ |
| 110 | int flags; |
| 111 | }; |
| 112 | |
| 113 | /* Elements in the table are retrieved by indexing with values from |
| 114 | the operands field of the d10v_opcodes table. */ |
| 115 | |
| 116 | extern const struct d10v_operand d10v_operands[]; |
| 117 | |
| 118 | /* Values defined for the flags field of a struct d10v_operand. */ |
| 119 | |
| 120 | /* the operand must be an even number */ |
| 121 | #define OPERAND_EVEN (1) |
| 122 | |
| 123 | /* the operand must be an odd number */ |
| 124 | #define OPERAND_ODD (2) |
| 125 | |
| 126 | /* this is the destination register; it will be modified */ |
| 127 | /* this is used by the optimizer */ |
| 128 | #define OPERAND_DEST (4) |
| 129 | |
| 130 | /* number or symbol */ |
| 131 | #define OPERAND_NUM (8) |
| 132 | |
| 133 | /* address or label */ |
| 134 | #define OPERAND_ADDR (0x10) |
| 135 | |
| 136 | /* register */ |
| 137 | #define OPERAND_REG (0x20) |
| 138 | |
| 139 | /* postincrement + */ |
| 140 | #define OPERAND_PLUS (0x40) |
| 141 | |
| 142 | /* postdecrement - */ |
| 143 | #define OPERAND_MINUS (0x80) |
| 144 | |
| 145 | /* @ */ |
| 146 | #define OPERAND_ATSIGN (0x100) |
| 147 | |
| 148 | /* @( */ |
| 149 | #define OPERAND_ATPAR (0x200) |
| 150 | |
| 151 | /* accumulator 0 */ |
| 152 | #define OPERAND_ACC0 (0x400) |
| 153 | |
| 154 | /* accumulator 1 */ |
| 155 | #define OPERAND_ACC1 (0x800) |
| 156 | |
| 157 | /* f0 / f1 flag register */ |
| 158 | #define OPERAND_FFLAG (0x1000) |
| 159 | |
| 160 | /* c flag register */ |
| 161 | #define OPERAND_CFLAG (0x2000) |
| 162 | |
| 163 | /* control register */ |
| 164 | #define OPERAND_CONTROL (0x4000) |
| 165 | |
| 166 | /* predecrement mode '@-sp' */ |
| 167 | #define OPERAND_ATMINUS (0x8000) |
| 168 | |
| 169 | /* signed number */ |
| 170 | #define OPERAND_SIGNED (0x10000) |
| 171 | |
| 172 | /* special accumulator shifts need a 4-bit number */ |
| 173 | /* 1 <= x <= 16 */ |
| 174 | #define OPERAND_SHIFT (0x20000) |
| 175 | |
| 176 | /* general purpose register */ |
| 177 | #define OPERAND_GPR (0x40000) |
| 178 | |
| 179 | /* special imm3 values with range restricted to -2 <= imm3 <= 3 */ |
| 180 | /* needed for rac/rachi */ |
| 181 | #define RESTRICTED_NUM3 (0x80000) |
| 182 | |
| 183 | /* Structure to hold information about predefined registers. */ |
| 184 | struct pd_reg |
| 185 | { |
| 186 | char *name; /* name to recognize */ |
| 187 | char *pname; /* name to print for this register */ |
| 188 | int value; |
| 189 | }; |
| 190 | |
| 191 | extern const struct pd_reg d10v_predefined_registers[]; |
| 192 | int d10v_reg_name_cnt(); |
| 193 | |
| 194 | /* an expressionS only has one register type, so we fake it */ |
| 195 | /* by setting high bits to indicate type */ |
| 196 | #define REGISTER_MASK 0xFF |
| 197 | |
| 198 | #endif /* D10V_H */ |