1 /* Disassembly routines for TMS320C54X architecture
2 Copyright (C) 1999-2018 Free Software Foundation, Inc.
3 Contributed by Timothy Wall (twall@cygnus.com)
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 file; see the file COPYING. If not, write to the
19 Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
26 #include "disassemble.h"
27 #include "opcode/tic54x.h"
28 #include "coff/tic54x.h"
30 static int has_lkaddr (unsigned short, const insn_template *);
31 static int get_insn_size (unsigned short, const insn_template *);
32 static int print_instruction (disassemble_info *, bfd_vma,
33 unsigned short, const char *,
34 const enum optype [], int, int);
35 static int print_parallel_instruction (disassemble_info *, bfd_vma,
37 const insn_template *, int);
38 static int sprint_dual_address (disassemble_info *,char [],
40 static int sprint_indirect_address (disassemble_info *,char [],
42 static int sprint_direct_address (disassemble_info *,char [],
44 static int sprint_mmr (disassemble_info *,char [],int);
45 static int sprint_condition (disassemble_info *,char *,unsigned short);
46 static int sprint_cc2 (disassemble_info *,char *,unsigned short);
49 print_insn_tic54x (bfd_vma memaddr, disassemble_info *info)
52 unsigned short opcode;
54 const insn_template* tm;
56 status = (*info->read_memory_func) (memaddr, opbuf, 2, info);
59 (*info->memory_error_func) (status, memaddr, info);
63 opcode = bfd_getl16 (opbuf);
64 tm = tic54x_get_insn (info, memaddr, opcode, &size);
66 info->bytes_per_line = 2;
67 info->bytes_per_chunk = 2;
68 info->octets_per_byte = 2;
69 info->display_endian = BFD_ENDIAN_LITTLE;
71 if (tm->flags & FL_PAR)
73 if (!print_parallel_instruction (info, memaddr, opcode, tm, size))
78 if (!print_instruction (info, memaddr, opcode,
81 size, (tm->flags & FL_EXT)))
89 has_lkaddr (unsigned short memdata, const insn_template *tm)
91 return (IS_LKADDR (memdata)
92 && (OPTYPE (tm->operand_types[0]) == OP_Smem
93 || OPTYPE (tm->operand_types[1]) == OP_Smem
94 || OPTYPE (tm->operand_types[2]) == OP_Smem
95 || OPTYPE (tm->operand_types[1]) == OP_Sind
96 || OPTYPE (tm->operand_types[0]) == OP_Lmem
97 || OPTYPE (tm->operand_types[1]) == OP_Lmem));
100 /* always returns 1 (whether an insn template was found) since we provide an
101 "unknown instruction" template */
103 tic54x_get_insn (disassemble_info *info, bfd_vma addr,
104 unsigned short memdata, int *size)
106 const insn_template *tm = NULL;
108 for (tm = tic54x_optab; tm->name; tm++)
110 if (tm->opcode == (memdata & tm->mask))
112 /* a few opcodes span two words */
113 if (tm->flags & FL_EXT)
115 /* if lk addressing is used, the second half of the opcode gets
116 pushed one word later */
118 bfd_vma addr2 = addr + 1 + has_lkaddr (memdata, tm);
119 int status = (*info->read_memory_func) (addr2, opbuf, 2, info);
120 // FIXME handle errors
123 unsigned short data2 = bfd_getl16 (opbuf);
124 if (tm->opcode2 == (data2 & tm->mask2))
126 if (size) *size = get_insn_size (memdata, tm);
133 if (size) *size = get_insn_size (memdata, tm);
138 for (tm = (insn_template *) tic54x_paroptab; tm->name; tm++)
140 if (tm->opcode == (memdata & tm->mask))
142 if (size) *size = get_insn_size (memdata, tm);
148 return &tic54x_unknown_opcode;
152 get_insn_size (unsigned short memdata, const insn_template *insn)
156 if (insn->flags & FL_PAR)
158 /* only non-parallel instructions support lk addressing */
163 size = insn->words + has_lkaddr (memdata, insn);
170 print_instruction (disassemble_info *info,
172 unsigned short opcode,
174 const enum optype tm_operands[],
179 /* string storage for multiple operands */
180 char operand[4][64] = { {0},{0},{0},{0}, };
182 unsigned long opcode2 = 0;
183 unsigned long lkaddr = 0;
184 enum optype src = OP_None;
185 enum optype dst = OP_None;
189 info->fprintf_func (info->stream, "%-7s", tm_name);
193 int status = (*info->read_memory_func) (memaddr + 1, buf, 2, info);
196 lkaddr = opcode2 = bfd_getl16 (buf);
199 status = (*info->read_memory_func) (memaddr + 2, buf, 2, info);
202 opcode2 = bfd_getl16 (buf);
206 for (i = 0; i < MAX_OPERANDS && OPTYPE (tm_operands[i]) != OP_None; i++)
208 char *next_comma = ",";
209 int optional = (tm_operands[i] & OPT) != 0;
211 switch (OPTYPE (tm_operands[i]))
214 sprint_dual_address (info, operand[i], XMEM (opcode));
215 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
218 sprint_dual_address (info, operand[i], YMEM (opcode));
219 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
224 info->fprintf_func (info->stream, "%s", comma);
225 if (INDIRECT (opcode))
227 if (MOD (opcode) >= 12)
229 bfd_vma addr = lkaddr;
230 int arf = ARF (opcode);
231 int mod = MOD (opcode);
233 info->fprintf_func (info->stream, "*(");
235 info->fprintf_func (info->stream, "*%sar%d(",
236 (mod == 13 || mod == 14 ? "+" : ""),
238 (*(info->print_address_func)) ((bfd_vma) addr, info);
239 info->fprintf_func (info->stream, ")%s",
240 mod == 14 ? "%" : "");
244 sprint_indirect_address (info, operand[i], opcode);
245 info->fprintf_func (info->stream, "%s", operand[i]);
250 /* FIXME -- use labels (print_address_func) */
251 /* in order to do this, we need to guess what DP is */
252 sprint_direct_address (info, operand[i], opcode);
253 info->fprintf_func (info->stream, "%s", operand[i]);
257 info->fprintf_func (info->stream, "%s", comma);
258 (*(info->print_address_func)) ((bfd_vma) opcode2, info);
261 /* upper 7 bits of address are in the opcode */
262 opcode2 += ((unsigned long) opcode & 0x7F) << 16;
265 info->fprintf_func (info->stream, "%s", comma);
266 (*(info->print_address_func)) ((bfd_vma) opcode2, info);
269 sprint_mmr (info, operand[i], MMRX (opcode));
270 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
273 sprint_mmr (info, operand[i], MMRY (opcode));
274 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
277 sprint_mmr (info, operand[i], MMR (opcode));
278 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
281 sprintf (operand[i], "pa%d", (unsigned) opcode2);
282 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
285 src = SRC (ext ? opcode2 : opcode) ? OP_B : OP_A;
286 sprintf (operand[i], (src == OP_B) ? "b" : "a");
287 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
290 src = SRC1 (ext ? opcode2 : opcode) ? OP_B : OP_A;
291 sprintf (operand[i], (src == OP_B) ? "b" : "a");
292 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
295 dst = DST (opcode) ? OP_B : OP_A;
296 sprintf (operand[i], (dst == OP_B) ? "a" : "b");
297 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
300 dst = DST (ext ? opcode2 : opcode) ? OP_B : OP_A;
301 if (!optional || dst != src)
303 sprintf (operand[i], (dst == OP_B) ? "b" : "a");
304 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
310 sprintf (operand[i], "b");
311 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
314 sprintf (operand[i], "a");
315 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
318 sprintf (operand[i], "ar%d", (int) ARX (opcode));
319 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
322 shift = SHIFT (ext ? opcode2 : opcode);
323 if (!optional || shift != 0)
325 sprintf (operand[i], "%d", shift);
326 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
332 shift = SHFT (opcode);
333 if (!optional || shift != 0)
335 sprintf (operand[i], "%d", (unsigned) shift);
336 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
342 sprintf (operand[i], "#%d", (int) (short) opcode2);
343 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
346 sprintf (operand[i], "t");
347 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
350 sprintf (operand[i], "ts");
351 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
354 sprintf (operand[i], "%d", (int) ((signed char) (opcode & 0xFF)));
355 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
358 sprintf (operand[i], "16");
359 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
362 sprintf (operand[i], "asm");
363 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
366 sprintf (operand[i], "%d", (int) (opcode & 0xF));
367 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
370 /* put all CC operands in the same operand */
371 sprint_condition (info, operand[i], opcode);
372 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
376 sprint_cc2 (info, operand[i], opcode);
377 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
381 const char *code[] = { "eq", "lt", "gt", "neq" };
383 /* Do not use sprintf with only two parameters as a
384 compiler warning could be generated in such conditions. */
385 sprintf (operand[i], "%s", code[CC3 (opcode)]);
386 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
391 int code = (opcode >> 8) & 0x3;
392 sprintf (operand[i], "%d", (code == 0) ? 1 : (code == 2) ? 2 : 3);
393 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
397 sprintf (operand[i], "#%d",
398 (int) (((signed char) opcode & 0x1F) << 3) >> 3);
399 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
402 sprintf (operand[i], "#%d", (unsigned) (opcode & 0xFF));
403 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
406 sprintf (operand[i], "#%d", (int) (opcode & 0x7));
407 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
410 sprintf (operand[i], "#%d", (unsigned) opcode2);
411 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
414 n = (opcode >> 9) & 0x1;
415 sprintf (operand[i], "st%d", n);
416 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
420 const char *status0[] = {
421 "0", "1", "2", "3", "4", "5", "6", "7", "8",
422 "ovb", "ova", "c", "tc", "13", "14", "15"
424 const char *status1[] = {
425 "0", "1", "2", "3", "4",
426 "cmpt", "frct", "c16", "sxm", "ovm", "10",
427 "intm", "hm", "xf", "cpl", "braf"
429 sprintf (operand[i], "%s",
430 n ? status1[SBIT (opcode)] : status0[SBIT (opcode)]);
431 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
435 sprintf (operand[i], "%d", (int) ((opcode >> 9) & 1) + 1);
436 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
439 sprintf (operand[i], "trn");
440 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
443 sprintf (operand[i], "dp");
444 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
447 /* FIXME-- this is DP, print the original address? */
448 sprintf (operand[i], "#%d", (int) (opcode & 0x1FF));
449 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
452 sprintf (operand[i], "arp");
453 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
456 sprintf (operand[i], "%d", (int) (opcode & 0x1F));
457 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
460 sprintf (operand[i], "??? (0x%x)", tm_operands[i]);
461 info->fprintf_func (info->stream, "%s%s", comma, operand[i]);
470 print_parallel_instruction (disassemble_info *info,
472 unsigned short opcode,
473 const insn_template *ptm,
476 print_instruction (info, memaddr, opcode,
477 ptm->name, ptm->operand_types, size, 0);
478 info->fprintf_func (info->stream, " || ");
479 return print_instruction (info, memaddr, opcode,
480 ptm->parname, ptm->paroperand_types, size, 0);
484 sprint_dual_address (disassemble_info *info ATTRIBUTE_UNUSED,
488 const char *formats[] = {
494 return sprintf (buf, formats[XMOD (code)], XARX (code));
498 sprint_indirect_address (disassemble_info *info ATTRIBUTE_UNUSED,
500 unsigned short opcode)
502 const char *formats[] = {
516 return sprintf (buf, formats[MOD (opcode)], ARF (opcode));
520 sprint_direct_address (disassemble_info *info ATTRIBUTE_UNUSED,
522 unsigned short opcode)
524 /* FIXME -- look up relocation if available */
525 return sprintf (buf, "DP+0x%02x", (int) (opcode & 0x7F));
529 sprint_mmr (disassemble_info *info ATTRIBUTE_UNUSED,
533 tic54x_symbol *reg = (tic54x_symbol *) mmregs;
534 while (reg->name != NULL)
536 if (mmr == reg->value)
538 sprintf (buf, "%s", (reg + 1)->name);
543 sprintf (buf, "MMR(%d)", mmr); /* FIXME -- different targets. */
548 sprint_cc2 (disassemble_info *info ATTRIBUTE_UNUSED,
550 unsigned short opcode)
552 const char *cc2[] = {
553 "??", "??", "ageq", "alt", "aneq", "aeq", "agt", "aleq",
554 "??", "??", "bgeq", "blt", "bneq", "beq", "bgt", "bleq",
556 return sprintf (buf, "%s", cc2[opcode & 0xF]);
560 sprint_condition (disassemble_info *info ATTRIBUTE_UNUSED,
562 unsigned short opcode)
565 const char *cmp[] = {
566 "??", "??", "geq", "lt", "neq", "eq", "gt", "leq"
570 char acc = (opcode & 0x8) ? 'b' : 'a';
572 buf += sprintf (buf, "%c%s%s", acc, cmp[(opcode & 0x7)],
573 (opcode & 0x20) ? ", " : "");
575 buf += sprintf (buf, "%c%s", acc, (opcode & 0x10) ? "ov" : "nov");
577 else if (opcode & 0x3F)
580 buf += sprintf (buf, "%s%s",
581 ((opcode & 0x30) == 0x30) ? "tc" : "ntc",
582 (opcode & 0x0F) ? ", " : "");
584 buf += sprintf (buf, "%s%s",
585 ((opcode & 0x0C) == 0x0C) ? "c" : "nc",
586 (opcode & 0x03) ? ", " : "");
588 buf += sprintf (buf, "%s",
589 ((opcode & 0x03) == 0x03) ? "bio" : "nbio");
592 buf += sprintf (buf, "unc");