1 /* Opcode table header for m680[01234]0/m6888[12]/m68851. 2 Copyright 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2001, 3 2003, 2004, 2006, 2010 Free Software Foundation, Inc. 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 3, 10 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 COPYING3. If not, write to the Free 19 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 20 02110-1301, USA. */ 21 22 /* These are used as bit flags for the arch field in the m68k_opcode 23 structure. */ 24 #define _m68k_undef 0 25 #define m68000 0x001 26 #define m68010 0x002 27 #define m68020 0x004 28 #define m68030 0x008 29 #define m68040 0x010 30 #define m68060 0x020 31 #define m68881 0x040 32 #define m68851 0x080 33 #define cpu32 0x100 /* e.g., 68332 */ 34 #define fido_a 0x200 35 #define m68k_mask 0x3ff 36 37 #define mcfmac 0x400 /* ColdFire MAC. */ 38 #define mcfemac 0x800 /* ColdFire EMAC. */ 39 #define cfloat 0x1000 /* ColdFire FPU. */ 40 #define mcfhwdiv 0x2000 /* ColdFire hardware divide. */ 41 42 #define mcfisa_a 0x4000 /* ColdFire ISA_A. */ 43 #define mcfisa_aa 0x8000 /* ColdFire ISA_A+. */ 44 #define mcfisa_b 0x10000 /* ColdFire ISA_B. */ 45 #define mcfisa_c 0x20000 /* ColdFire ISA_C. */ 46 #define mcfusp 0x40000 /* ColdFire USP instructions. */ 47 #define mcf_mask 0x7e400 48 49 /* Handy aliases. */ 50 #define m68040up (m68040 | m68060) 51 #define m68030up (m68030 | m68040up) 52 #define m68020up (m68020 | m68030up) 53 #define m68010up (m68010 | cpu32 | fido_a | m68020up) 54 #define m68000up (m68000 | m68010up) 55 56 #define mfloat (m68881 | m68040 | m68060) 57 #define mmmu (m68851 | m68030 | m68040 | m68060) 58 59 /* The structure used to hold information for an opcode. */ 60 61 struct m68k_opcode 62 { 63 /* The opcode name. */ 64 const char *name; 65 /* The pseudo-size of the instruction(in bytes). Used to determine 66 number of bytes necessary to disassemble the instruction. */ 67 unsigned int size; 68 /* The opcode itself. */ 69 unsigned long opcode; 70 /* The mask used by the disassembler. */ 71 unsigned long match; 72 /* The arguments. */ 73 const char *args; 74 /* The architectures which support this opcode. */ 75 unsigned int arch; 76 }; 77 78 /* The structure used to hold information for an opcode alias. */ 79 80 struct m68k_opcode_alias 81 { 82 /* The alias name. */ 83 const char *alias; 84 /* The instruction for which this is an alias. */ 85 const char *primary; 86 }; 87 88 /* We store four bytes of opcode for all opcodes because that is the 89 most any of them need. The actual length of an instruction is 90 always at least 2 bytes, and is as much longer as necessary to hold 91 the operands it has. 92 93 The match field is a mask saying which bits must match particular 94 opcode in order for an instruction to be an instance of that 95 opcode. 96 97 The args field is a string containing two characters for each 98 operand of the instruction. The first specifies the kind of 99 operand; the second, the place it is stored. 100 101 If the first char of args is '.', it indicates that the opcode is 102 two words. This is only necessary when the match field does not 103 have any bits set in the second opcode word. Such a '.' is skipped 104 for operand processing. */ 105 106 /* Kinds of operands: 107 Characters used: AaBbCcDdEeFfGgHIiJjKkLlMmnOopQqRrSsTtUuVvWwXxYyZz01234|*~%;@!&$?/<>#^+- 108 109 D data register only. Stored as 3 bits. 110 A address register only. Stored as 3 bits. 111 a address register indirect only. Stored as 3 bits. 112 R either kind of register. Stored as 4 bits. 113 r either kind of register indirect only. Stored as 4 bits. 114 At the moment, used only for cas2 instruction. 115 F floating point coprocessor register only. Stored as 3 bits. 116 O an offset (or width): immediate data 0-31 or data register. 117 Stored as 6 bits in special format for BF... insns. 118 + autoincrement only. Stored as 3 bits (number of the address register). 119 - autodecrement only. Stored as 3 bits (number of the address register). 120 Q quick immediate data. Stored as 3 bits. 121 This matches an immediate operand only when value is in range 1 .. 8. 122 M moveq immediate data. Stored as 8 bits. 123 This matches an immediate operand only when value is in range -128..127 124 T trap vector immediate data. Stored as 4 bits. 125 126 k K-factor for fmove.p instruction. Stored as a 7-bit constant or 127 a three bit register offset, depending on the field type. 128 129 # immediate data. Stored in special places (b, w or l) 130 which say how many bits to store. 131 ^ immediate data for floating point instructions. Special places 132 are offset by 2 bytes from '#'... 133 B pc-relative address, converted to an offset 134 that is treated as immediate data. 135 d displacement and register. Stores the register as 3 bits 136 and stores the displacement in the entire second word. 137 138 C the CCR. No need to store it; this is just for filtering validity. 139 S the SR. No need to store, just as with CCR. 140 U the USP. No need to store, just as with CCR. 141 E the MAC ACC. No need to store, just as with CCR. 142 e the EMAC ACC[0123]. 143 G the MAC/EMAC MACSR. No need to store, just as with CCR. 144 g the EMAC ACCEXT{01,23}. 145 H the MASK. No need to store, just as with CCR. 146 i the MAC/EMAC scale factor. 147 148 I Coprocessor ID. Not printed if 1. The Coprocessor ID is always 149 extracted from the 'd' field of word one, which means that an extended 150 coprocessor opcode can be skipped using the 'i' place, if needed. 151 152 s System Control register for the floating point coprocessor. 153 154 J Misc register for movec instruction, stored in 'j' format. 155 Possible values: 156 0x000 SFC Source Function Code reg [60, 40, 30, 20, 10] 157 0x001 DFC Data Function Code reg [60, 40, 30, 20, 10] 158 0x002 CACR Cache Control Register [60, 40, 30, 20, mcf] 159 0x003 TC MMU Translation Control [60, 40] 160 0x004 ITT0 Instruction Transparent 161 Translation reg 0 [60, 40] 162 0x005 ITT1 Instruction Transparent 163 Translation reg 1 [60, 40] 164 0x006 DTT0 Data Transparent 165 Translation reg 0 [60, 40] 166 0x007 DTT1 Data Transparent 167 Translation reg 1 [60, 40] 168 0x008 BUSCR Bus Control Register [60] 169 0x800 USP User Stack Pointer [60, 40, 30, 20, 10] 170 0x801 VBR Vector Base reg [60, 40, 30, 20, 10, mcf] 171 0x802 CAAR Cache Address Register [ 30, 20] 172 0x803 MSP Master Stack Pointer [ 40, 30, 20] 173 0x804 ISP Interrupt Stack Pointer [ 40, 30, 20] 174 0x805 MMUSR MMU Status reg [ 40] 175 0x806 URP User Root Pointer [60, 40] 176 0x807 SRP Supervisor Root Pointer [60, 40] 177 0x808 PCR Processor Configuration reg [60] 178 0xC00 ROMBAR ROM Base Address Register [520X] 179 0xC04 RAMBAR0 RAM Base Address Register 0 [520X] 180 0xC05 RAMBAR1 RAM Base Address Register 0 [520X] 181 0xC0F MBAR0 RAM Base Address Register 0 [520X] 182 0xC04 FLASHBAR FLASH Base Address Register [mcf528x] 183 0xC05 RAMBAR Static RAM Base Address Register [mcf528x] 184 185 L Register list of the type d0-d7/a0-a7 etc. 186 (New! Improved! Can also hold fp0-fp7, as well!) 187 The assembler tries to see if the registers match the insn by 188 looking at where the insn wants them stored. 189 190 l Register list like L, but with all the bits reversed. 191 Used for going the other way. . . 192 193 c cache identifier which may be "nc" for no cache, "ic" 194 for instruction cache, "dc" for data cache, or "bc" 195 for both caches. Used in cinv and cpush. Always 196 stored in position "d". 197 198 u Any register, with ``upper'' or ``lower'' specification. Used 199 in the mac instructions with size word. 200 201 The remainder are all stored as 6 bits using an address mode and a 202 register number; they differ in which addressing modes they match. 203 204 * all (modes 0-6,7.0-4) 205 ~ alterable memory (modes 2-6,7.0,7.1) 206 (not 0,1,7.2-4) 207 % alterable (modes 0-6,7.0,7.1) 208 (not 7.2-4) 209 ; data (modes 0,2-6,7.0-4) 210 (not 1) 211 @ data, but not immediate (modes 0,2-6,7.0-3) 212 (not 1,7.4) 213 ! control (modes 2,5,6,7.0-3) 214 (not 0,1,3,4,7.4) 215 & alterable control (modes 2,5,6,7.0,7.1) 216 (not 0,1,3,4,7.2-4) 217 $ alterable data (modes 0,2-6,7.0,7.1) 218 (not 1,7.2-4) 219 ? alterable control, or data register (modes 0,2,5,6,7.0,7.1) 220 (not 1,3,4,7.2-4) 221 / control, or data register (modes 0,2,5,6,7.0-3) 222 (not 1,3,4,7.4) 223 > *save operands (modes 2,4,5,6,7.0,7.1) 224 (not 0,1,3,7.2-4) 225 < *restore operands (modes 2,3,5,6,7.0-3) 226 (not 0,1,4,7.4) 227 228 coldfire move operands: 229 m (modes 0-4) 230 n (modes 5,7.2) 231 o (modes 6,7.0,7.1,7.3,7.4) 232 p (modes 0-5) 233 234 coldfire bset/bclr/btst/mulsl/mulul operands: 235 q (modes 0,2-5) 236 v (modes 0,2-5,7.0,7.1) 237 b (modes 0,2-5,7.2) 238 w (modes 2-5,7.2) 239 y (modes 2,5) 240 z (modes 2,5,7.2) 241 x mov3q immediate operand. 242 j coprocessor ET operand. 243 K coprocessor command number. 244 4 (modes 2,3,4,5) 245 */ 246 247 /* For the 68851: */ 248 /* I didn't use much imagination in choosing the 249 following codes, so many of them aren't very 250 mnemonic. -rab 251 252 0 32 bit pmmu register 253 Possible values: 254 000 TC Translation Control Register (68030, 68851) 255 256 1 16 bit pmmu register 257 111 AC Access Control (68851) 258 259 2 8 bit pmmu register 260 100 CAL Current Access Level (68851) 261 101 VAL Validate Access Level (68851) 262 110 SCC Stack Change Control (68851) 263 264 3 68030-only pmmu registers (32 bit) 265 010 TT0 Transparent Translation reg 0 266 (aka Access Control reg 0 -- AC0 -- on 68ec030) 267 011 TT1 Transparent Translation reg 1 268 (aka Access Control reg 1 -- AC1 -- on 68ec030) 269 270 W wide pmmu registers 271 Possible values: 272 001 DRP Dma Root Pointer (68851) 273 010 SRP Supervisor Root Pointer (68030, 68851) 274 011 CRP Cpu Root Pointer (68030, 68851) 275 276 f function code register (68030, 68851) 277 0 SFC 278 1 DFC 279 280 V VAL register only (68851) 281 282 X BADx, BACx (16 bit) 283 100 BAD Breakpoint Acknowledge Data (68851) 284 101 BAC Breakpoint Acknowledge Control (68851) 285 286 Y PSR (68851) (MMUSR on 68030) (ACUSR on 68ec030) 287 Z PCSR (68851) 288 289 | memory (modes 2-6, 7.*) 290 291 t address test level (68030 only) 292 Stored as 3 bits, range 0-7. 293 Also used for breakpoint instruction now. 294 295 */ 296 297 /* Places to put an operand, for non-general operands: 298 Characters used: BbCcDdFfGgHhIijkLlMmNnostWw123456789/ 299 300 s source, low bits of first word. 301 d dest, shifted 9 in first word 302 1 second word, shifted 12 303 2 second word, shifted 6 304 3 second word, shifted 0 305 4 third word, shifted 12 306 5 third word, shifted 6 307 6 third word, shifted 0 308 7 second word, shifted 7 309 8 second word, shifted 10 310 9 second word, shifted 5 311 E second word, shifted 9 312 D store in both place 1 and place 3; for divul and divsl. 313 B first word, low byte, for branch displacements 314 W second word (entire), for branch displacements 315 L second and third words (entire), for branch displacements 316 (also overloaded for move16) 317 b second word, low byte 318 w second word (entire) [variable word/long branch offset for dbra] 319 W second word (entire) (must be signed 16 bit value) 320 l second and third word (entire) 321 g variable branch offset for bra and similar instructions. 322 The place to store depends on the magnitude of offset. 323 t store in both place 7 and place 8; for floating point operations 324 c branch offset for cpBcc operations. 325 The place to store is word two if bit six of word one is zero, 326 and words two and three if bit six of word one is one. 327 i Increment by two, to skip over coprocessor extended operands. Only 328 works with the 'I' format. 329 k Dynamic K-factor field. Bits 6-4 of word 2, used as a register number. 330 Also used for dynamic fmovem instruction. 331 C floating point coprocessor constant - 7 bits. Also used for static 332 K-factors... 333 j Movec register #, stored in 12 low bits of second word. 334 m For M[S]ACx; 4 bits split with MSB shifted 6 bits in first word 335 and remaining 3 bits of register shifted 9 bits in first word. 336 Indicate upper/lower in 1 bit shifted 7 bits in second word. 337 Use with `R' or `u' format. 338 n `m' withouth upper/lower indication. (For M[S]ACx; 4 bits split 339 with MSB shifted 6 bits in first word and remaining 3 bits of 340 register shifted 9 bits in first word. No upper/lower 341 indication is done.) Use with `R' or `u' format. 342 o For M[S]ACw; 4 bits shifted 12 in second word (like `1'). 343 Indicate upper/lower in 1 bit shifted 7 bits in second word. 344 Use with `R' or `u' format. 345 M For M[S]ACw; 4 bits in low bits of first word. Indicate 346 upper/lower in 1 bit shifted 6 bits in second word. Use with 347 `R' or `u' format. 348 N For M[S]ACw; 4 bits in low bits of second word. Indicate 349 upper/lower in 1 bit shifted 6 bits in second word. Use with 350 `R' or `u' format. 351 h shift indicator (scale factor), 1 bit shifted 10 in second word 352 353 Places to put operand, for general operands: 354 d destination, shifted 6 bits in first word 355 b source, at low bit of first word, and immediate uses one byte 356 w source, at low bit of first word, and immediate uses two bytes 357 l source, at low bit of first word, and immediate uses four bytes 358 s source, at low bit of first word. 359 Used sometimes in contexts where immediate is not allowed anyway. 360 f single precision float, low bit of 1st word, immediate uses 4 bytes 361 F double precision float, low bit of 1st word, immediate uses 8 bytes 362 x extended precision float, low bit of 1st word, immediate uses 12 bytes 363 p packed float, low bit of 1st word, immediate uses 12 bytes 364 G EMAC accumulator, load (bit 4 2nd word, !bit8 first word) 365 H EMAC accumulator, non load (bit 4 2nd word, bit 8 first word) 366 F EMAC ACCx 367 f EMAC ACCy 368 I MAC/EMAC scale factor 369 / Like 's', but set 2nd word, bit 5 if trailing_ampersand set 370 ] first word, bit 10 371 */ 372 373 extern const struct m68k_opcode m68k_opcodes[]; 374 extern const struct m68k_opcode_alias m68k_opcode_aliases[]; 375 376 extern const int m68k_numopcodes, m68k_numaliases; 377 378 /* end of m68k-opcode.h */ 379