1 /* Disassembly routines for TMS320C54X architecture
2 Copyright (C) 1999,2000 Free Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 #include "opcode/tic54x.h"
26 #include "coff/tic54x.h"
28 typedef struct _instruction {
34 static int get_insn_size PARAMS ((unsigned short, instruction *));
35 static int get_instruction PARAMS ((disassemble_info *, bfd_vma,
36 unsigned short, instruction *));
37 static int print_instruction PARAMS ((disassemble_info *, bfd_vma,
38 unsigned short, char *,
39 enum optype [], int, int));
40 static int print_parallel_instruction PARAMS ((disassemble_info *, bfd_vma,
41 unsigned short, partemplate *,
43 static int sprint_dual_address (disassemble_info *,char [],
45 static int sprint_indirect_address (disassemble_info *,char [],
47 static int sprint_direct_address (disassemble_info *,char [],
49 static int sprint_mmr (disassemble_info *,char [],int);
50 static int sprint_condition (disassemble_info *,char *,unsigned short);
51 static int sprint_cc2 (disassemble_info *,char *,unsigned short);
54 print_insn_tic54x(memaddr, info)
56 disassemble_info *info;
59 unsigned short opcode;
63 status = (*info->read_memory_func) (memaddr, opbuf, 2, info);
66 (*info->memory_error_func)(status, memaddr, info);
70 opcode = bfd_getl16(opbuf);
71 if (!get_instruction (info, memaddr, opcode, &insn))
74 size = get_insn_size (opcode, &insn);
75 info->bytes_per_line = 2;
76 info->bytes_per_chunk = 2;
77 info->octets_per_byte = 2;
78 info->display_endian = BFD_ENDIAN_LITTLE;
82 if (!print_parallel_instruction (info, memaddr, opcode, insn.ptm, size))
87 if (!print_instruction (info, memaddr, opcode,
88 (char *)insn.tm->name,
89 insn.tm->operand_types,
90 size, (insn.tm->flags & FL_EXT)))
98 has_lkaddr(opcode, tm)
99 unsigned short opcode;
102 return IS_LKADDR(opcode) &&
103 (OPTYPE(tm->operand_types[0]) == OP_Smem ||
104 OPTYPE(tm->operand_types[1]) == OP_Smem ||
105 OPTYPE(tm->operand_types[2]) == OP_Smem ||
106 OPTYPE(tm->operand_types[1]) == OP_Sind);
109 /* always returns 1 (whether an insn template was found) since we provide an
110 "unknown instruction" template */
112 get_instruction (info, addr, opcode, insn)
113 disassemble_info *info;
115 unsigned short opcode;
122 for (tm = (template *)tic54x_optab; tm->name; tm++)
124 if (tm->opcode == (opcode & tm->mask))
126 /* a few opcodes span two words */
127 if (tm->flags & FL_EXT)
129 /* if lk addressing is used, the second half of the opcode gets
130 pushed one word later */
132 bfd_vma addr2 = addr + 1 + has_lkaddr(opcode, tm);
133 int status = (*info->read_memory_func)(addr2, opbuf, 2, info);
136 unsigned short opcode2 = bfd_getl16(opbuf);
137 if (tm->opcode2 == (opcode2 & tm->mask2))
151 for (ptm = (partemplate *)tic54x_paroptab; ptm->name; ptm++)
153 if (ptm->opcode == (opcode & ptm->mask))
161 insn->tm = (template *)&tic54x_unknown_opcode;
166 get_insn_size (opcode, insn)
167 unsigned short opcode;
174 /* only non-parallel instructions support lk addressing */
175 size = insn->ptm->words;
179 size = insn->tm->words + has_lkaddr(opcode, insn->tm);
186 print_instruction (info, memaddr, opcode, tm_name, tm_operands, size, ext)
187 disassemble_info *info;
189 unsigned short opcode;
191 enum optype tm_operands[];
196 /* string storage for multiple operands */
197 char operand[4][64] = { {0},{0},{0},{0}, };
199 unsigned long opcode2, lkaddr;
200 enum optype src = OP_None;
201 enum optype dst = OP_None;
205 info->fprintf_func (info->stream, "%-7s", tm_name);
209 int status = (*info->read_memory_func) (memaddr+1, buf, 2, info);
212 lkaddr = opcode2 = bfd_getl16(buf);
215 status = (*info->read_memory_func) (memaddr+2, buf, 2, info);
218 opcode2 = bfd_getl16(buf);
222 for (i=0;i < MAX_OPERANDS && OPTYPE(tm_operands[i]) != OP_None;i++)
224 char *next_comma = ",";
225 int optional = (tm_operands[i] & OPT) != 0;
227 switch (OPTYPE(tm_operands[i]))
230 sprint_dual_address (info, operand[i], XMEM(opcode));
231 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
234 sprint_dual_address (info, operand[i], YMEM(opcode));
235 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
240 info->fprintf_func (info->stream, "%s", comma);
241 if (INDIRECT(opcode))
243 if (MOD(opcode) >= 12)
245 bfd_vma addr = lkaddr;
246 int arf = ARF(opcode);
247 int mod = MOD(opcode);
249 info->fprintf_func (info->stream, "*(");
251 info->fprintf_func (info->stream, "*%sar%d(",
252 (mod == 13 || mod == 14 ? "+" : ""),
254 (*(info->print_address_func))((bfd_vma)addr, info);
255 info->fprintf_func (info->stream, ")%s",
256 mod == 14 ? "%" : "");
260 sprint_indirect_address (info, operand[i], opcode);
261 info->fprintf_func (info->stream, "%s", operand[i]);
266 /* FIXME -- use labels (print_address_func) */
267 /* in order to do this, we need to guess what DP is */
268 sprint_direct_address (info, operand[i], opcode);
269 info->fprintf_func (info->stream, "%s", operand[i]);
273 info->fprintf_func (info->stream, "%s", comma);
274 (*(info->print_address_func))((bfd_vma)opcode2, info);
277 /* upper 7 bits of address are in the opcode */
278 opcode2 += ((unsigned long)opcode & 0x7F) << 16;
281 info->fprintf_func (info->stream, "%s", comma);
282 (*(info->print_address_func))((bfd_vma)opcode2, info);
285 sprint_mmr (info, operand[i], MMRX(opcode));
286 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
289 sprint_mmr (info, operand[i], MMRY(opcode));
290 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
293 sprint_mmr (info, operand[i], MMR(opcode));
294 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
297 sprintf (operand[i], "pa%d", (unsigned)opcode2);
298 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
301 src = SRC(ext ? opcode2 : opcode) ? OP_B : OP_A;
302 sprintf (operand[i], (src == OP_B) ? "b" : "a");
303 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
306 src = SRC1(ext ? opcode2 : opcode) ? OP_B : OP_A;
307 sprintf (operand[i], (src == OP_B) ? "b" : "a");
308 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
311 dst = DST(opcode) ? OP_B : OP_A;
312 sprintf (operand[i], (dst == OP_B) ? "a" : "b");
313 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
316 dst = DST(ext ? opcode2 : opcode) ? OP_B : OP_A;
317 if (!optional || dst != src)
319 sprintf (operand[i], (dst == OP_B) ? "b" : "a");
320 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
326 sprintf (operand[i], "b");
327 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
330 sprintf (operand[i], "a");
331 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
334 sprintf (operand[i],"ar%d", (int)ARX(opcode));
335 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
338 shift = SHIFT(ext ? opcode2 : opcode);
339 if (!optional || shift != 0)
341 sprintf (operand[i],"%d", shift);
342 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
348 shift = SHFT(opcode);
349 if (!optional || shift != 0)
351 sprintf (operand[i],"%d", (unsigned)shift);
352 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
358 sprintf (operand[i],"#%d", (int)(short)opcode2);
359 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
362 sprintf (operand[i], "t");
363 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
366 sprintf (operand[i], "ts");
367 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
370 sprintf (operand[i], "%d", (int)((signed char)(opcode & 0xFF)));
371 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
374 sprintf (operand[i], "16");
375 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
378 sprintf (operand[i], "asm");
379 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
382 sprintf (operand[i], "%d", (int)(opcode & 0xF));
383 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
386 /* put all CC operands in the same operand */
387 sprint_condition (info, operand[i], opcode);
388 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
392 sprint_cc2 (info, operand[i], opcode);
393 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
397 const char *code[] = { "eq", "lt", "gt", "neq" };
398 sprintf (operand[i], code[CC3(opcode)]);
399 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
404 int code = (opcode>>8) & 0x3;
405 sprintf (operand[i], "%d", (code == 0) ? 1 : (code == 2) ? 2 : 3);
406 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
410 sprintf (operand[i], "#%d",
411 (int)(((signed char)opcode & 0x1F) << 3)>>3);
412 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
415 sprintf (operand[i], "#%d", (unsigned)(opcode & 0xFF));
416 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
419 sprintf (operand[i], "#%d", (int)(opcode & 0x7));
420 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
423 sprintf (operand[i], "#%d", (unsigned)opcode2);
424 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
427 n = (opcode >> 9) & 0x1;
428 sprintf (operand[i], "st%d", n);
429 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
433 const char *status0[] = {
434 "0", "1", "2", "3", "4", "5", "6", "7", "8",
435 "ovb", "ova", "c", "tc", "13", "14", "15"
437 const char *status1[] = {
438 "0", "1", "2", "3", "4",
439 "cmpt", "frct", "c16", "sxm", "ovm", "10",
440 "intm", "hm", "xf", "cpl", "braf"
442 sprintf (operand[i], "%s",
443 n ? status1[SBIT(opcode)] : status0[SBIT(opcode)]);
444 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
448 sprintf (operand[i], "%d", (int)((opcode >> 9)&1) + 1);
449 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
452 sprintf (operand[i], "trn");
453 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
456 sprintf (operand[i], "dp");
457 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
460 /* FIXME-- this is DP, print the original address? */
461 sprintf (operand[i], "#%d", (int)(opcode & 0x1FF));
462 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
465 sprintf (operand[i], "arp");
466 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
469 sprintf (operand[i], "%d", (int)(opcode & 0x1F));
470 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
473 sprintf (operand[i], "??? (0x%x)", tm_operands[i]);
474 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
483 print_parallel_instruction (info, memaddr, opcode, ptm, size)
484 disassemble_info *info;
486 unsigned short opcode;
490 print_instruction (info, memaddr, opcode,
491 ptm->name, ptm->operand_types, size, 0);
492 info->fprintf_func (info->stream, " || ");
493 return print_instruction (info, memaddr, opcode,
494 ptm->parname, ptm->paroperand_types, size, 0);
498 sprint_dual_address (info, buf, code)
499 disassemble_info *info;
503 const char *formats[] = {
509 return sprintf (buf, formats[XMOD(code)], XARX(code));
513 sprint_indirect_address (info, buf, opcode)
514 disassemble_info *info;
516 unsigned short opcode;
518 const char *formats[] = {
532 return sprintf (buf, formats[MOD(opcode)], ARF(opcode));
536 sprint_direct_address (info, buf, opcode)
537 disassemble_info *info;
539 unsigned short opcode;
541 /* FIXME -- look up relocation if available */
542 return sprintf (buf, "0x??%02x", (int)(opcode & 0x7F));
546 sprint_mmr (info, buf, mmr)
547 disassemble_info *info;
551 symbol *reg = (symbol *)mmregs;
552 while (reg->name != NULL)
554 if (mmr == reg->value)
556 sprintf (buf, "%s", (reg+1)->name);
561 sprintf (buf, "MMR(%d)", mmr); // FIXME -- different targets
566 sprint_cc2 (info, buf, opcode)
567 disassemble_info *info;
569 unsigned short opcode;
571 const char *cc2[] = {
572 "??", "??", "ageq", "alt", "aneq", "aeq", "agt", "aleq",
573 "??", "??", "bgeq", "blt", "bneq", "beq", "bgt", "bleq",
575 return sprintf (buf, "%s", cc2[opcode & 0xF]);
579 sprint_condition (info, buf, opcode)
580 disassemble_info *info;
582 unsigned short opcode;
585 const char *cmp[] = {
586 "??", "??", "geq", "lt", "neq", "eq", "gt", "leq"
590 char acc = (opcode & 0x8) ? 'b' : 'a';
592 buf += sprintf (buf, "%c%s%s", acc, cmp[(opcode&0x7)],
593 (opcode&0x20) ? ", " : "");
595 buf += sprintf (buf, "%c%s", acc, (opcode&0x10) ? "ov" : "nov");
597 else if (opcode & 0x3F)
600 buf += sprintf (buf, "%s%s",
601 ((opcode & 0x30) == 0x30) ? "tc" : "ntc",
602 (opcode & 0x0F) ? ", " : "");
604 buf += sprintf (buf, "%s%s",
605 ((opcode & 0x0C) == 0x0C) ? "c" : "nc",
606 (opcode & 0x03) ? ", " : "");
608 buf += sprintf (buf, "%s",
609 ((opcode & 0x03) == 0x03) ? "bio" : "nbio");
612 buf += sprintf (buf, "unc");