1 /* Disassembler for the PA-RISC. Somewhat derived from sparc-pinsn.c.
2 Copyright 1989, 1990, 1992, 1993 Free Software Foundation, Inc.
4 Contributed by the Center for Software Science at the
5 University of Utah (pa-gdb-bugs@cs.utah.edu).
7 This program 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 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 #include "opcode/hppa.h"
27 /* Integer register names, indexed by the numbers which appear in the
29 static const char *const reg_names[] =
30 {"flags", "r1", "rp", "r3", "r4", "r5", "r6", "r7", "r8", "r9",
31 "r10", "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19",
32 "r20", "r21", "r22", "r23", "r24", "r25", "r26", "dp", "ret0", "ret1",
35 /* Floating point register names, indexed by the numbers which appear in the
37 static const char *const fp_reg_names[] =
38 {"fpsr", "fpe2", "fpe4", "fpe6",
39 "fr4", "fr5", "fr6", "fr7", "fr8",
40 "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
41 "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23",
42 "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31"};
44 typedef unsigned int CORE_ADDR;
46 /* Get at various relevent fields of an instruction word. */
50 #define MASK_14 0x3fff
51 #define MASK_21 0x1fffff
53 /* This macro gets bit fields using HP's numbering (MSB = 0) */
55 #define GET_FIELD(X, FROM, TO) \
56 ((X) >> (31 - (TO)) & ((1 << ((TO) - (FROM) + 1)) - 1))
58 /* Some of these have been converted to 2-d arrays because they
59 consume less storage this way. If the maintenance becomes a
60 problem, convert them back to const 1-d pointer arrays. */
61 static const char control_reg[][6] = {
62 "rctr", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7",
63 "pidr1", "pidr2", "ccr", "sar", "pidr3", "pidr4",
64 "iva", "eiem", "itmr", "pcsq", "pcoq", "iir", "isr",
65 "ior", "ipsw", "eirr", "tr0", "tr1", "tr2", "tr3",
66 "tr4", "tr5", "tr6", "tr7"
69 static const char compare_cond_names[][5] = {
70 "", ",=", ",<", ",<=", ",<<", ",<<=", ",sv", ",od",
71 ",tr", ",<>", ",>=", ",>", ",>>=", ",>>", ",nsv", ",ev"
73 static const char compare_cond_64_names[][6] = {
74 "", ",*=", ",*<", ",*<=", ",*<<", ",*<<=", ",*sv", ",*od",
75 ",*tr", ",*<>", ",*>=", ",*>", ",*>>=", ",*>>", ",*nsv", ",*ev"
77 static const char cmpib_cond_64_names[][6] = {
78 ",*<<", ",*=", ",*<", ",*<=", ",*>>=", ",*<>", ",*>=", ",*>"
80 static const char add_cond_names[][5] = {
81 "", ",=", ",<", ",<=", ",nuv", ",znv", ",sv", ",od",
82 ",tr", ",<>", ",>=", ",>", ",uv", ",vnz", ",nsv", ",ev"
84 static const char add_cond_64_names[][6] = {
85 ",*", ",*=", ",*<", ",*<=", ",*nuv", ",*znv", ",*sv", ",*od",
86 ",*tr", ",*<>", ",*>=", ",*>", ",*uv", ",*vnz", ",*nsv", ",*ev"
88 static const char wide_add_cond_names[][5] = {
89 "", ",=", ",<", ",<=", ",nuv", ",*=", ",*<", ",*<=",
90 ",tr", ",<>", ",>=", ",>", ",uv", ",*<>", ",*>=", ",*>"
92 static const char *const logical_cond_names[] = {
93 "", ",=", ",<", ",<=", 0, 0, 0, ",od",
94 ",tr", ",<>", ",>=", ",>", 0, 0, 0, ",ev"};
95 static const char *const logical_cond_64_names[] = {
96 ",*", ",*=", ",*<", ",*<=", 0, 0, 0, ",*od",
97 ",*tr", ",*<>", ",*>=", ",*>", 0, 0, 0, ",*ev"};
98 static const char *const unit_cond_names[] = {
99 "", 0, ",sbz", ",shz", ",sdc", 0, ",sbc", ",shc",
100 ",tr", 0, ",nbz", ",nhz", ",ndc", 0, ",nbc", ",nhc"
102 static const char *const unit_cond_64_names[] = {
103 ",*", ",*swz", ",*sbz", ",*shz", ",*sdc", ",*swc", ",*sbc", ",*shc",
104 ",*tr", ",*nwz", ",*nbz", ",*nhz", ",*ndc", ",*nwc", ",*nbc", ",*nhc"
106 static const char shift_cond_names[][4] = {
107 "", ",=", ",<", ",od", ",tr", ",<>", ",>=", ",ev"
109 static const char shift_cond_64_names[][5] = {
110 ",*", ",*=", ",*<", ",*od", ",*tr", ",*<>", ",*>=", ",*ev"
112 static const char bb_cond_64_names[][5] = {
115 static const char index_compl_names[][4] = {"", ",m", ",s", ",sm"};
116 static const char short_ldst_compl_names[][4] = {"", ",ma", "", ",mb"};
117 static const char *const short_bytes_compl_names[] = {
118 "", ",b,m", ",e", ",e,m"
120 static const char *const float_format_names[] = {",sgl", ",dbl", "", ",quad"};
121 static const char float_comp_names[][8] =
123 ",false?", ",false", ",?", ",!<=>", ",=", ",=t", ",?=", ",!<>",
124 ",!?>=", ",<", ",?<", ",!>=", ",!?>", ",<=", ",?<=", ",!>",
125 ",!?<=", ",>", ",?>", ",!<=", ",!?<", ",>=", ",?>=", ",!<",
126 ",!?=", ",<>", ",!=", ",!=t", ",!?", ",<=>", ",true?", ",true"
129 /* For a bunch of different instructions form an index into a
130 completer name table. */
131 #define GET_COMPL(insn) (GET_FIELD (insn, 26, 26) | \
132 GET_FIELD (insn, 18, 18) << 1)
134 #define GET_COND(insn) (GET_FIELD ((insn), 16, 18) + \
135 (GET_FIELD ((insn), 19, 19) ? 8 : 0))
137 /* Utility function to print registers. Put these first, so gcc's function
138 inlining can do its stuff. */
140 #define fputs_filtered(STR,F) (*info->fprintf_func) (info->stream, "%s", STR)
145 disassemble_info *info;
147 (*info->fprintf_func) (info->stream, reg ? reg_names[reg] : "r0");
151 fput_fp_reg (reg, info)
153 disassemble_info *info;
155 (*info->fprintf_func) (info->stream, reg ? fp_reg_names[reg] : "fr0");
159 fput_fp_reg_r (reg, info)
161 disassemble_info *info;
163 /* Special case floating point exception registers. */
165 (*info->fprintf_func) (info->stream, "fpe%d", reg * 2 + 1);
167 (*info->fprintf_func) (info->stream, "%sR", reg ? fp_reg_names[reg]
172 fput_creg (reg, info)
174 disassemble_info *info;
176 (*info->fprintf_func) (info->stream, control_reg[reg]);
179 /* print constants with sign */
182 fput_const (num, info)
184 disassemble_info *info;
187 (*info->fprintf_func) (info->stream, "-%x", -(int)num);
189 (*info->fprintf_func) (info->stream, "%x", num);
192 /* Routines to extract various sized constants out of hppa
195 /* extract a 3-bit space register number from a be, ble, mtsp or mfsp */
200 return GET_FIELD (word, 18, 18) << 2 | GET_FIELD (word, 16, 17);
204 extract_5_load (word)
207 return low_sign_extend (word >> 16 & MASK_5, 5);
210 /* extract the immediate field from a st{bhw}s instruction */
212 extract_5_store (word)
215 return low_sign_extend (word & MASK_5, 5);
218 /* extract the immediate field from a break instruction */
220 extract_5r_store (word)
223 return (word & MASK_5);
226 /* extract the immediate field from a {sr}sm instruction */
228 extract_5R_store (word)
231 return (word >> 16 & MASK_5);
234 /* extract the immediate field from a bb instruction */
236 extract_5Q_store (word)
239 return (word >> 21 & MASK_5);
242 /* extract an 11 bit immediate field */
247 return low_sign_extend (word & MASK_11, 11);
250 /* extract a 14 bit immediate field */
255 return low_sign_extend (word & MASK_14, 14);
258 /* extract a 21 bit constant */
268 val = GET_FIELD (word, 20, 20);
270 val |= GET_FIELD (word, 9, 19);
272 val |= GET_FIELD (word, 5, 6);
274 val |= GET_FIELD (word, 0, 4);
276 val |= GET_FIELD (word, 7, 8);
277 return sign_extend (val, 21) << 11;
280 /* extract a 12 bit constant from branch instructions */
286 return sign_extend (GET_FIELD (word, 19, 28) |
287 GET_FIELD (word, 29, 29) << 10 |
288 (word & 0x1) << 11, 12) << 2;
291 /* extract a 17 bit constant from branch instructions, returning the
292 19 bit signed value. */
298 return sign_extend (GET_FIELD (word, 19, 28) |
299 GET_FIELD (word, 29, 29) << 10 |
300 GET_FIELD (word, 11, 15) << 11 |
301 (word & 0x1) << 16, 17) << 2;
304 /* Print one instruction. */
306 print_insn_hppa (memaddr, info)
308 disassemble_info *info;
311 unsigned int insn, i;
315 (*info->read_memory_func) (memaddr, buffer, sizeof (buffer), info);
318 (*info->memory_error_func) (status, memaddr, info);
323 insn = bfd_getb32 (buffer);
325 for (i = 0; i < NUMOPCODES; ++i)
327 const struct pa_opcode *opcode = &pa_opcodes[i];
328 if ((insn & opcode->mask) == opcode->match)
330 register const char *s;
332 (*info->fprintf_func) (info->stream, "%s", opcode->name);
334 if (!strchr ("cfCY?-+nHNZFIu", opcode->args[0]))
335 (*info->fprintf_func) (info->stream, " ");
336 for (s = opcode->args; *s != '\0'; ++s)
341 fput_reg (GET_FIELD (insn, 11, 15), info);
344 if (GET_FIELD (insn, 25, 25))
345 fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
347 fput_fp_reg (GET_FIELD (insn, 11, 15), info);
350 fput_reg (GET_FIELD (insn, 6, 10), info);
353 fput_creg (GET_FIELD (insn, 6, 10), info);
356 fput_fp_reg (GET_FIELD (insn, 6, 10), info);
359 fput_reg (GET_FIELD (insn, 27, 31), info);
362 if (GET_FIELD (insn, 25, 25))
363 fput_fp_reg_r (GET_FIELD (insn, 27, 31), info);
365 fput_fp_reg (GET_FIELD (insn, 27, 31), info);
368 fput_fp_reg (GET_FIELD (insn, 27, 31), info);
372 int reg = GET_FIELD (insn, 6, 10);
374 reg |= (GET_FIELD (insn, 26, 26) << 4);
375 fput_fp_reg (reg, info);
380 int reg = GET_FIELD (insn, 11, 15);
382 reg |= (GET_FIELD (insn, 26, 26) << 4);
383 fput_fp_reg (reg, info);
388 int reg = GET_FIELD (insn, 27, 31);
390 reg |= (GET_FIELD (insn, 26, 26) << 4);
391 fput_fp_reg (reg, info);
396 int reg = GET_FIELD (insn, 16, 20);
398 reg |= (GET_FIELD (insn, 26, 26) << 4);
399 fput_fp_reg (reg, info);
404 int reg = GET_FIELD (insn, 21, 25);
406 reg |= (GET_FIELD (insn, 26, 26) << 4);
407 fput_fp_reg (reg, info);
411 fput_const (extract_5_load (insn), info);
414 (*info->fprintf_func) (info->stream,
415 "sr%d", GET_FIELD (insn, 16, 17));
419 (*info->fprintf_func) (info->stream, "sr%d", extract_3 (insn));
422 (*info->fprintf_func) (info->stream, "%s ",
423 index_compl_names[GET_COMPL (insn)]);
426 (*info->fprintf_func) (info->stream, "%s ",
427 short_ldst_compl_names[GET_COMPL (insn)]);
430 (*info->fprintf_func) (info->stream, "%s ",
431 short_bytes_compl_names[GET_COMPL (insn)]);
434 /* Handle conditions. */
441 (*info->fprintf_func) (info->stream, "%s ",
442 float_comp_names[GET_FIELD
446 /* these four conditions are for the set of instructions
447 which distinguish true/false conditions by opcode
448 rather than by the 'f' bit (sigh): comb, comib,
451 fputs_filtered (compare_cond_names[GET_FIELD (insn, 16,
456 fputs_filtered (compare_cond_names[GET_FIELD (insn, 16, 18)
460 fputs_filtered (compare_cond_64_names[GET_FIELD (insn, 16, 18)],
464 fputs_filtered (compare_cond_64_names[GET_FIELD (insn, 16, 18)
468 fputs_filtered (cmpib_cond_64_names[GET_FIELD (insn, 16, 18)],
472 fputs_filtered (compare_cond_names[GET_FIELD (insn, 16,
474 + GET_FIELD (insn, 4, 4) * 8], info);
477 fputs_filtered (add_cond_names[GET_FIELD (insn, 16, 18)
478 + GET_FIELD (insn, 4, 4) * 8], info);
481 (*info->fprintf_func) (info->stream, "%s ",
482 compare_cond_names[GET_COND (insn)]);
485 (*info->fprintf_func) (info->stream, "%s ",
486 compare_cond_64_names[GET_COND (insn)]);
489 (*info->fprintf_func) (info->stream, "%s ",
490 add_cond_names[GET_COND (insn)]);
493 (*info->fprintf_func) (info->stream, "%s ",
494 add_cond_64_names[GET_COND (insn)]);
497 (*info->fprintf_func) (info->stream, "%s",
498 add_cond_names[GET_FIELD (insn,
503 (*info->fprintf_func) (info->stream, "%s",
504 add_cond_names[GET_FIELD (insn,
509 (*info->fprintf_func)
511 wide_add_cond_names[GET_FIELD (insn, 16, 18)]);
515 (*info->fprintf_func)
517 wide_add_cond_names[GET_FIELD (insn, 16, 18) + 8]);
521 (*info->fprintf_func) (info->stream, "%s ",
522 logical_cond_names[GET_COND (insn)]);
525 (*info->fprintf_func) (info->stream, "%s ",
526 logical_cond_64_names[GET_COND (insn)]);
529 (*info->fprintf_func) (info->stream, "%s ",
530 unit_cond_names[GET_COND (insn)]);
533 (*info->fprintf_func) (info->stream, "%s ",
534 unit_cond_64_names[GET_COND (insn)]);
539 (*info->fprintf_func)
541 shift_cond_names[GET_FIELD (insn, 16, 18)]);
543 /* If the next character in args is 'n', it will handle
544 putting out the space. */
546 (*info->fprintf_func) (info->stream, " ");
549 (*info->fprintf_func) (info->stream, "%s",
550 shift_cond_64_names[GET_FIELD (insn, 16, 18)]);
553 (*info->fprintf_func)
555 bb_cond_64_names[GET_FIELD (insn, 16, 16)]);
557 /* If the next character in args is 'n', it will handle
558 putting out the space. */
560 (*info->fprintf_func) (info->stream, " ");
567 fput_const (extract_5_store (insn), info);
570 fput_const (extract_5r_store (insn), info);
573 fput_const (extract_5R_store (insn), info);
576 fput_const (extract_5Q_store (insn), info);
579 fput_const (extract_11 (insn), info);
582 fput_const (extract_14 (insn), info);
585 fput_const (extract_21 (insn), info);
589 (*info->fprintf_func) (info->stream, ",n ");
591 (*info->fprintf_func) (info->stream, " ");
594 if ((insn & 0x20) && s[1])
595 (*info->fprintf_func) (info->stream, ",n ");
596 else if (insn & 0x20)
597 (*info->fprintf_func) (info->stream, ",n");
599 (*info->fprintf_func) (info->stream, " ");
602 (*info->print_address_func) (memaddr + 8 + extract_12 (insn),
606 /* 17 bit PC-relative branch. */
607 (*info->print_address_func) ((memaddr + 8
608 + extract_17 (insn)),
612 /* 17 bit displacement. This is an offset from a register
613 so it gets disasssembled as just a number, not any sort
615 fput_const (extract_17 (insn), info);
618 (*info->fprintf_func) (info->stream, "%d",
619 GET_FIELD (insn, 24, 25));
622 (*info->fprintf_func) (info->stream, "%d",
623 31 - GET_FIELD (insn, 22, 26));
628 num = GET_FIELD (insn, 20, 20) << 5;
629 num |= GET_FIELD (insn, 22, 26);
630 (*info->fprintf_func) (info->stream, "%d", 63 - num);
634 (*info->fprintf_func) (info->stream, "%d",
635 GET_FIELD (insn, 22, 26));
638 (*info->fprintf_func) (info->stream, "%d",
639 32 - GET_FIELD (insn, 27, 31));
642 fput_const (GET_FIELD (insn, 20, 28), info);
645 fput_const (GET_FIELD (insn, 6, 18), info);
648 if (GET_FIELD (insn, 26, 26))
649 (*info->fprintf_func) (info->stream, ",m ");
651 (*info->fprintf_func) (info->stream, " ");
654 fput_const (GET_FIELD (insn, 6, 31), info);
657 (*info->fprintf_func) (info->stream, ",%d", GET_FIELD (insn, 23, 25));
660 fput_const ((GET_FIELD (insn, 6,20) << 5 |
661 GET_FIELD (insn, 27, 31)), info);
664 fput_const (GET_FIELD (insn, 6, 20), info);
668 int reg = GET_FIELD (insn, 21, 22);
669 reg |= GET_FIELD (insn, 16, 18) << 2;
670 if (GET_FIELD (insn, 23, 23) != 0)
671 fput_fp_reg_r (reg, info);
673 fput_fp_reg (reg, info);
678 fput_const ((GET_FIELD (insn, 6, 22) << 5 |
679 GET_FIELD (insn, 27, 31)), info);
682 fput_const ((GET_FIELD (insn, 11, 20) << 5 |
683 GET_FIELD (insn, 27, 31)), info);
686 fput_const ((GET_FIELD (insn, 16, 20) << 5 |
687 GET_FIELD (insn, 27, 31)), info);
690 (*info->fprintf_func) (info->stream, ",%d", GET_FIELD (insn, 23, 25));
693 /* if no destination completer and not before a completer
694 for fcmp, need a space here */
695 if (s[1] == 'G' || s[1] == '?')
696 fputs_filtered (float_format_names[GET_FIELD (insn, 19, 20)],
699 (*info->fprintf_func) (info->stream, "%s ",
700 float_format_names[GET_FIELD
704 (*info->fprintf_func) (info->stream, "%s ",
705 float_format_names[GET_FIELD (insn,
709 if (GET_FIELD (insn, 26, 26) == 1)
710 (*info->fprintf_func) (info->stream, "%s ",
711 float_format_names[0]);
713 (*info->fprintf_func) (info->stream, "%s ",
714 float_format_names[1]);
717 /* if no destination completer and not before a completer
718 for fcmp, need a space here */
720 fputs_filtered (float_format_names[GET_FIELD (insn, 20, 20)],
723 (*info->fprintf_func) (info->stream, "%s ",
724 float_format_names[GET_FIELD
728 if (GET_FIELD (insn, 24, 24))
729 fput_fp_reg_r (GET_FIELD (insn, 6, 10), info);
731 fput_fp_reg (GET_FIELD (insn, 6, 10), info);
735 if (GET_FIELD (insn, 19, 19))
736 fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
738 fput_fp_reg (GET_FIELD (insn, 11, 15), info);
741 (*info->fprintf_func) (info->stream, "%c", *s);
748 (*info->fprintf_func) (info->stream, "#%8x", insn);