1 /* Disassemble MN10300 instructions.
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2005, 2007, 2012
3 Free Software Foundation, Inc.
5 This file is part of the GNU opcodes library.
7 This library 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, or (at your option)
12 It is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
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,
20 MA 02110-1301, USA. */
24 #include "opcode/mn10300.h"
28 #define HAVE_AM33_2 (info->mach == AM33_2)
29 #define HAVE_AM33 (info->mach == AM33 || HAVE_AM33_2)
30 #define HAVE_AM30 (info->mach == AM30)
33 disassemble (bfd_vma memaddr,
34 struct disassemble_info *info,
38 struct mn10300_opcode *op = (struct mn10300_opcode *) mn10300_opcodes;
39 const struct mn10300_operand *operand;
41 unsigned long extension = 0;
42 int status, match = 0;
44 /* Find the opcode. */
47 int mysize, extra_shift;
49 if (op->format == FMT_S0)
51 else if (op->format == FMT_S1
52 || op->format == FMT_D0)
54 else if (op->format == FMT_S2
55 || op->format == FMT_D1)
57 else if (op->format == FMT_S4)
59 else if (op->format == FMT_D2)
61 else if (op->format == FMT_D3)
63 else if (op->format == FMT_D4)
65 else if (op->format == FMT_D6)
67 else if (op->format == FMT_D7 || op->format == FMT_D10)
69 else if (op->format == FMT_D8)
71 else if (op->format == FMT_D9)
76 if ((op->mask & insn) == op->opcode
77 && size == (unsigned int) mysize
79 || (op->machine == AM33_2 && HAVE_AM33_2)
80 || (op->machine == AM33 && HAVE_AM33)
81 || (op->machine == AM30 && HAVE_AM30)))
83 const unsigned char *opindex_ptr;
87 if (op->format == FMT_D1 || op->format == FMT_S1)
89 else if (op->format == FMT_D2 || op->format == FMT_D4
90 || op->format == FMT_S2 || op->format == FMT_S4
91 || op->format == FMT_S6 || op->format == FMT_D5)
93 else if (op->format == FMT_D7
94 || op->format == FMT_D8
95 || op->format == FMT_D9)
100 if (size == 1 || size == 2)
104 && (op->format == FMT_D1
105 || op->opcode == 0xdf0000
106 || op->opcode == 0xde0000))
110 && op->format == FMT_D6)
116 status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
119 (*info->memory_error_func) (status, memaddr, info);
123 insn |= bfd_getl16 (buffer);
127 && (op->opcode == 0xfaf80000
128 || op->opcode == 0xfaf00000
129 || op->opcode == 0xfaf40000))
133 && (op->format == FMT_D7
134 || op->format == FMT_D10))
140 status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
143 (*info->memory_error_func) (status, memaddr, info);
147 insn |= bfd_getl16 (buffer);
150 else if (size == 5 && op->opcode == 0xdc000000)
152 unsigned long temp = 0;
154 status = (*info->read_memory_func) (memaddr + 1, buffer, 4, info);
157 (*info->memory_error_func) (status, memaddr, info);
160 temp |= bfd_getl32 (buffer);
163 insn |= (temp & 0xffffff00) >> 8;
164 extension = temp & 0xff;
166 else if (size == 5 && op->format == FMT_D3)
168 status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
171 (*info->memory_error_func) (status, memaddr, info);
175 insn |= bfd_getl16 (buffer);
177 status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info);
180 (*info->memory_error_func) (status, memaddr, info);
183 extension = *(unsigned char *) buffer;
187 unsigned long temp = 0;
189 status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
192 (*info->memory_error_func) (status, memaddr, info);
195 temp |= bfd_getl16 (buffer);
200 status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info);
203 (*info->memory_error_func) (status, memaddr, info);
206 extension = *(unsigned char *) buffer;
208 else if (size == 6 && op->format == FMT_D8)
211 status = (*info->read_memory_func) (memaddr + 5, buffer, 1, info);
214 (*info->memory_error_func) (status, memaddr, info);
217 insn |= *(unsigned char *) buffer;
219 status = (*info->read_memory_func) (memaddr + 3, buffer, 2, info);
222 (*info->memory_error_func) (status, memaddr, info);
225 extension = bfd_getl16 (buffer);
229 unsigned long temp = 0;
231 status = (*info->read_memory_func) (memaddr + 2, buffer, 4, info);
234 (*info->memory_error_func) (status, memaddr, info);
237 temp |= bfd_getl32 (buffer);
240 insn |= (temp >> 16) & 0xffff;
241 extension = temp & 0xffff;
243 else if (size == 7 && op->format == FMT_D9)
246 status = (*info->read_memory_func) (memaddr + 3, buffer, 4, info);
249 (*info->memory_error_func) (status, memaddr, info);
252 extension = bfd_getl32 (buffer);
253 insn |= (extension & 0xff000000) >> 24;
254 extension &= 0xffffff;
256 else if (size == 7 && op->opcode == 0xdd000000)
258 unsigned long temp = 0;
260 status = (*info->read_memory_func) (memaddr + 1, buffer, 4, info);
263 (*info->memory_error_func) (status, memaddr, info);
266 temp |= bfd_getl32 (buffer);
269 insn |= (temp >> 8) & 0xffffff;
270 extension = (temp & 0xff) << 16;
272 status = (*info->read_memory_func) (memaddr + 5, buffer, 2, info);
275 (*info->memory_error_func) (status, memaddr, info);
278 extension |= bfd_getb16 (buffer);
282 unsigned long temp = 0;
284 status = (*info->read_memory_func) (memaddr + 2, buffer, 4, info);
287 (*info->memory_error_func) (status, memaddr, info);
290 temp |= bfd_getl32 (buffer);
293 insn |= (temp >> 16) & 0xffff;
294 extension = (temp & 0xffff) << 8;
296 status = (*info->read_memory_func) (memaddr + 6, buffer, 1, info);
299 (*info->memory_error_func) (status, memaddr, info);
302 extension |= *(unsigned char *) buffer;
306 (*info->fprintf_func) (info->stream, "%s\t", op->name);
308 /* Now print the operands. */
309 for (opindex_ptr = op->operands, nocomma = 1;
315 operand = &mn10300_operands[*opindex_ptr];
317 /* If this operand is a PLUS (autoincrement), then do not emit
318 a comma before emitting the plus. */
319 if ((operand->flags & MN10300_OPERAND_PLUS) != 0)
322 if ((operand->flags & MN10300_OPERAND_SPLIT) != 0)
326 value = insn & ((1 << operand->bits) - 1);
327 value <<= (32 - operand->bits);
328 temp = extension >> operand->shift;
329 temp &= ((1 << (32 - operand->bits)) - 1);
331 value = ((value ^ (((unsigned long) 1) << 31))
332 - (((unsigned long) 1) << 31));
334 else if ((operand->flags & MN10300_OPERAND_24BIT) != 0)
338 value = insn & ((1 << operand->bits) - 1);
339 value <<= (24 - operand->bits);
340 temp = extension >> operand->shift;
341 temp &= ((1 << (24 - operand->bits)) - 1);
343 if ((operand->flags & MN10300_OPERAND_SIGNED) != 0)
344 value = ((value & 0xffffff) ^ 0x800000) - 0x800000;
346 else if ((operand->flags & (MN10300_OPERAND_FSREG
347 | MN10300_OPERAND_FDREG)))
349 /* See m10300-opc.c just before #define FSM0 for an
350 explanation of these variables. Note that
351 FMT-implied shifts are not taken into account for
353 unsigned long mask_low, mask_high;
354 int shl_low, shr_high, shl_high;
356 switch (operand->bits)
359 /* Handle regular FP registers. */
360 if (operand->shift >= 0)
362 /* This is an `m' register. */
363 shl_low = operand->shift;
364 shl_high = 8 + (8 & shl_low) + (shl_low & 4) / 4;
368 /* This is an `n' register. */
369 shl_low = -operand->shift;
370 shl_high = shl_low / 4;
378 /* Handle accumulators. */
379 shl_low = -operand->shift;
389 value = ((((insn >> shl_high) << shr_high) & mask_high)
390 | ((insn >> shl_low) & mask_low));
392 else if ((operand->flags & MN10300_OPERAND_EXTENDED) != 0)
393 value = ((extension >> (operand->shift))
394 & ((1 << operand->bits) - 1));
397 value = ((insn >> (operand->shift))
398 & ((1 << operand->bits) - 1));
400 if ((operand->flags & MN10300_OPERAND_SIGNED) != 0
401 /* These are properly extended by the code above. */
402 && ((operand->flags & MN10300_OPERAND_24BIT) == 0))
403 value = ((value ^ (((unsigned long) 1) << (operand->bits - 1)))
404 - (((unsigned long) 1) << (operand->bits - 1)));
408 || ((operand->flags & MN10300_OPERAND_PAREN) == 0)))
409 (*info->fprintf_func) (info->stream, ",");
413 if ((operand->flags & MN10300_OPERAND_DREG) != 0)
415 value = ((insn >> (operand->shift + extra_shift))
416 & ((1 << operand->bits) - 1));
417 (*info->fprintf_func) (info->stream, "d%d", (int) value);
420 else if ((operand->flags & MN10300_OPERAND_AREG) != 0)
422 value = ((insn >> (operand->shift + extra_shift))
423 & ((1 << operand->bits) - 1));
424 (*info->fprintf_func) (info->stream, "a%d", (int) value);
427 else if ((operand->flags & MN10300_OPERAND_SP) != 0)
428 (*info->fprintf_func) (info->stream, "sp");
430 else if ((operand->flags & MN10300_OPERAND_PSW) != 0)
431 (*info->fprintf_func) (info->stream, "psw");
433 else if ((operand->flags & MN10300_OPERAND_MDR) != 0)
434 (*info->fprintf_func) (info->stream, "mdr");
436 else if ((operand->flags & MN10300_OPERAND_RREG) != 0)
438 value = ((insn >> (operand->shift + extra_shift))
439 & ((1 << operand->bits) - 1));
441 (*info->fprintf_func) (info->stream, "r%d", (int) value);
443 (*info->fprintf_func) (info->stream, "a%d", (int) value - 8);
445 (*info->fprintf_func) (info->stream, "d%d", (int) value - 12);
448 else if ((operand->flags & MN10300_OPERAND_XRREG) != 0)
450 value = ((insn >> (operand->shift + extra_shift))
451 & ((1 << operand->bits) - 1));
453 (*info->fprintf_func) (info->stream, "sp");
455 (*info->fprintf_func) (info->stream, "xr%d", (int) value);
458 else if ((operand->flags & MN10300_OPERAND_FSREG) != 0)
459 (*info->fprintf_func) (info->stream, "fs%d", (int) value);
461 else if ((operand->flags & MN10300_OPERAND_FDREG) != 0)
462 (*info->fprintf_func) (info->stream, "fd%d", (int) value);
464 else if ((operand->flags & MN10300_OPERAND_FPCR) != 0)
465 (*info->fprintf_func) (info->stream, "fpcr");
467 else if ((operand->flags & MN10300_OPERAND_USP) != 0)
468 (*info->fprintf_func) (info->stream, "usp");
470 else if ((operand->flags & MN10300_OPERAND_SSP) != 0)
471 (*info->fprintf_func) (info->stream, "ssp");
473 else if ((operand->flags & MN10300_OPERAND_MSP) != 0)
474 (*info->fprintf_func) (info->stream, "msp");
476 else if ((operand->flags & MN10300_OPERAND_PC) != 0)
477 (*info->fprintf_func) (info->stream, "pc");
479 else if ((operand->flags & MN10300_OPERAND_EPSW) != 0)
480 (*info->fprintf_func) (info->stream, "epsw");
482 else if ((operand->flags & MN10300_OPERAND_PLUS) != 0)
483 (*info->fprintf_func) (info->stream, "+");
485 else if ((operand->flags & MN10300_OPERAND_PAREN) != 0)
488 (*info->fprintf_func) (info->stream, ")");
491 (*info->fprintf_func) (info->stream, "(");
497 else if ((operand->flags & MN10300_OPERAND_PCREL) != 0)
498 (*info->print_address_func) ((long) value + memaddr, info);
500 else if ((operand->flags & MN10300_OPERAND_MEMADDR) != 0)
501 (*info->print_address_func) (value, info);
503 else if ((operand->flags & MN10300_OPERAND_REG_LIST) != 0)
507 (*info->fprintf_func) (info->stream, "[");
510 (*info->fprintf_func) (info->stream, "d2");
517 (*info->fprintf_func) (info->stream, ",");
518 (*info->fprintf_func) (info->stream, "d3");
525 (*info->fprintf_func) (info->stream, ",");
526 (*info->fprintf_func) (info->stream, "a2");
533 (*info->fprintf_func) (info->stream, ",");
534 (*info->fprintf_func) (info->stream, "a3");
541 (*info->fprintf_func) (info->stream, ",");
542 (*info->fprintf_func) (info->stream, "other");
549 (*info->fprintf_func) (info->stream, ",");
550 (*info->fprintf_func) (info->stream, "exreg0");
556 (*info->fprintf_func) (info->stream, ",");
557 (*info->fprintf_func) (info->stream, "exreg1");
563 (*info->fprintf_func) (info->stream, ",");
564 (*info->fprintf_func) (info->stream, "exother");
567 (*info->fprintf_func) (info->stream, "]");
571 (*info->fprintf_func) (info->stream, "%ld", (long) value);
580 /* xgettext:c-format */
581 (*info->fprintf_func) (info->stream, _("unknown\t0x%04lx"), insn);
585 print_insn_mn10300 (bfd_vma memaddr, struct disassemble_info *info)
590 unsigned int consume;
592 /* First figure out how big the opcode is. */
593 status = (*info->read_memory_func) (memaddr, buffer, 1, info);
596 (*info->memory_error_func) (status, memaddr, info);
599 insn = *(unsigned char *) buffer;
601 /* These are one byte insns. */
602 if ((insn & 0xf3) == 0x00
603 || (insn & 0xf0) == 0x10
604 || (insn & 0xfc) == 0x3c
605 || (insn & 0xf3) == 0x41
606 || (insn & 0xf3) == 0x40
607 || (insn & 0xfc) == 0x50
608 || (insn & 0xfc) == 0x54
609 || (insn & 0xf0) == 0x60
610 || (insn & 0xf0) == 0x70
611 || ((insn & 0xf0) == 0x80
612 && (insn & 0x0c) >> 2 != (insn & 0x03))
613 || ((insn & 0xf0) == 0x90
614 && (insn & 0x0c) >> 2 != (insn & 0x03))
615 || ((insn & 0xf0) == 0xa0
616 && (insn & 0x0c) >> 2 != (insn & 0x03))
617 || ((insn & 0xf0) == 0xb0
618 && (insn & 0x0c) >> 2 != (insn & 0x03))
619 || (insn & 0xff) == 0xcb
620 || (insn & 0xfc) == 0xd0
621 || (insn & 0xfc) == 0xd4
622 || (insn & 0xfc) == 0xd8
623 || (insn & 0xf0) == 0xe0
624 || (insn & 0xff) == 0xff)
629 /* These are two byte insns. */
630 else if ((insn & 0xf0) == 0x80
631 || (insn & 0xf0) == 0x90
632 || (insn & 0xf0) == 0xa0
633 || (insn & 0xf0) == 0xb0
634 || (insn & 0xfc) == 0x20
635 || (insn & 0xfc) == 0x28
636 || (insn & 0xf3) == 0x43
637 || (insn & 0xf3) == 0x42
638 || (insn & 0xfc) == 0x58
639 || (insn & 0xfc) == 0x5c
640 || ((insn & 0xf0) == 0xc0
641 && (insn & 0xff) != 0xcb
642 && (insn & 0xff) != 0xcc
643 && (insn & 0xff) != 0xcd)
644 || (insn & 0xff) == 0xf0
645 || (insn & 0xff) == 0xf1
646 || (insn & 0xff) == 0xf2
647 || (insn & 0xff) == 0xf3
648 || (insn & 0xff) == 0xf4
649 || (insn & 0xff) == 0xf5
650 || (insn & 0xff) == 0xf6)
652 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
655 (*info->memory_error_func) (status, memaddr, info);
658 insn = bfd_getb16 (buffer);
662 /* These are three byte insns. */
663 else if ((insn & 0xff) == 0xf8
664 || (insn & 0xff) == 0xcc
665 || (insn & 0xff) == 0xf9
666 || (insn & 0xf3) == 0x01
667 || (insn & 0xf3) == 0x02
668 || (insn & 0xf3) == 0x03
669 || (insn & 0xfc) == 0x24
670 || (insn & 0xfc) == 0x2c
671 || (insn & 0xfc) == 0x30
672 || (insn & 0xfc) == 0x34
673 || (insn & 0xfc) == 0x38
674 || (insn & 0xff) == 0xde
675 || (insn & 0xff) == 0xdf
676 || (insn & 0xff) == 0xf9
677 || (insn & 0xff) == 0xcc)
679 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
682 (*info->memory_error_func) (status, memaddr, info);
685 insn = bfd_getb16 (buffer);
687 status = (*info->read_memory_func) (memaddr + 2, buffer, 1, info);
690 (*info->memory_error_func) (status, memaddr, info);
693 insn |= *(unsigned char *) buffer;
697 /* These are four byte insns. */
698 else if ((insn & 0xff) == 0xfa
699 || (insn & 0xff) == 0xf7
700 || (insn & 0xff) == 0xfb)
702 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
705 (*info->memory_error_func) (status, memaddr, info);
708 insn = bfd_getb32 (buffer);
712 /* These are five byte insns. */
713 else if ((insn & 0xff) == 0xcd
714 || (insn & 0xff) == 0xdc)
716 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
719 (*info->memory_error_func) (status, memaddr, info);
722 insn = bfd_getb32 (buffer);
726 /* These are six byte insns. */
727 else if ((insn & 0xff) == 0xfd
728 || (insn & 0xff) == 0xfc)
730 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
733 (*info->memory_error_func) (status, memaddr, info);
737 insn = bfd_getb32 (buffer);
741 /* Else its a seven byte insns (in theory). */
744 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
747 (*info->memory_error_func) (status, memaddr, info);
751 insn = bfd_getb32 (buffer);
753 /* Handle the 5-byte extended instruction codes. */
754 if ((insn & 0xfff80000) == 0xfe800000)
758 disassemble (memaddr, info, insn, consume);