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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [bfd/] [cpu-ia64-opc.c] - Blame information for rev 842

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1 227 jeremybenn 
/* Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2006, 2007, 2009
2 
   Free Software Foundation, Inc.
3 
   Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
4 
 
5 
   This file is part of BFD, the Binary File Descriptor library.
6 
 
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 3 of the License, or
10 
   (at your option) any later version.
11 
 
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.
16 
 
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.  */
21 
 
22 
/* Logically, this code should be part of libopcode but since some of
23 
   the operand insertion/extraction functions help bfd to implement
24 
   relocations, this code is included as part of cpu-ia64.c.  This
25 
   avoids circular dependencies between libopcode and libbfd and also
26 
   obviates the need for applications to link in libopcode when all
27 
   they really want is libbfd.
28 
 
29 
   --davidm Mon Apr 13 22:14:02 1998 */
30 
 
31 
#include "../opcodes/ia64-opc.h"
32 
 
33 
#define NELEMS(a)  ((int) (sizeof (a) / sizeof ((a)[0])))
34 
 
35 
static const char*
36 
ins_rsvd (const struct ia64_operand *self ATTRIBUTE_UNUSED,
37 
          ia64_insn value ATTRIBUTE_UNUSED, ia64_insn *code ATTRIBUTE_UNUSED)
38 
{
39 
  return "internal error---this shouldn't happen";
40 
}
41 
 
42 
static const char*
43 
ext_rsvd (const struct ia64_operand *self ATTRIBUTE_UNUSED,
44 
          ia64_insn code ATTRIBUTE_UNUSED, ia64_insn *valuep ATTRIBUTE_UNUSED)
45 
{
46 
  return "internal error---this shouldn't happen";
47 
}
48 
 
49 
static const char*
50 
ins_const (const struct ia64_operand *self ATTRIBUTE_UNUSED,
51 
           ia64_insn value ATTRIBUTE_UNUSED, ia64_insn *code ATTRIBUTE_UNUSED)
52 
{
53 
  return 0;
54 
}
55 
 
56 
static const char*
57 
ext_const (const struct ia64_operand *self ATTRIBUTE_UNUSED,
58 
           ia64_insn code ATTRIBUTE_UNUSED, ia64_insn *valuep ATTRIBUTE_UNUSED)
59 
{
60 
  return 0;
61 
}
62 
 
63 
static const char*
64 
ins_reg (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
65 
{
66 
  if (value >= 1u << self->field[0].bits)
67 
    return "register number out of range";
68 
 
69 
  *code |= value << self->field[0].shift;
70 
  return 0;
71 
}
72 
 
73 
static const char*
74 
ext_reg (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
75 
{
76 
  *valuep = ((code >> self->field[0].shift)
77 
             & ((1u << self->field[0].bits) - 1));
78 
  return 0;
79 
}
80 
 
81 
static const char*
82 
ins_immu (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
83 
{
84 
  ia64_insn new_insn = 0;
85 
  int i;
86 
 
87 
  for (i = 0; i < NELEMS (self->field) && self->field[i].bits; ++i)
88 
    {
89 
      new_insn |= ((value & ((((ia64_insn) 1) << self->field[i].bits) - 1))
90 
                 << self->field[i].shift);
91 
      value >>= self->field[i].bits;
92 
    }
93 
  if (value)
94 
    return "integer operand out of range";
95 
 
96 
  *code |= new_insn;
97 
  return 0;
98 
}
99 
 
100 
static const char*
101 
ext_immu (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
102 
{
103 
  BFD_HOST_U_64_BIT value = 0;
104 
  int i, bits = 0, total = 0;
105 
 
106 
  for (i = 0; i < NELEMS (self->field) && self->field[i].bits; ++i)
107 
    {
108 
      bits = self->field[i].bits;
109 
      value |= ((code >> self->field[i].shift)
110 
                & ((((BFD_HOST_U_64_BIT) 1) << bits) - 1)) << total;
111 
      total += bits;
112 
    }
113 
  *valuep = value;
114 
  return 0;
115 
}
116 
 
117 
static const char*
118 
ins_immu5b (const struct ia64_operand *self, ia64_insn value,
119 
            ia64_insn *code)
120 
{
121 
  if (value < 32 || value > 63)
122 
    return "value must be between 32 and 63";
123 
  return ins_immu (self, value - 32, code);
124 
}
125 
 
126 
static const char*
127 
ext_immu5b (const struct ia64_operand *self, ia64_insn code,
128 
            ia64_insn *valuep)
129 
{
130 
  const char *result;
131 
 
132 
  result = ext_immu (self, code, valuep);
133 
  if (result)
134 
    return result;
135 
 
136 
  *valuep = *valuep + 32;
137 
  return 0;
138 
}
139 
 
140 
static const char*
141 
ins_immus8 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
142 
{
143 
  if (value & 0x7)
144 
    return "value not an integer multiple of 8";
145 
  return ins_immu (self, value >> 3, code);
146 
}
147 
 
148 
static const char*
149 
ext_immus8 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
150 
{
151 
  const char *result;
152 
 
153 
  result = ext_immu (self, code, valuep);
154 
  if (result)
155 
    return result;
156 
 
157 
  *valuep = *valuep << 3;
158 
  return 0;
159 
}
160 
 
161 
static const char*
162 
ins_imms_scaled (const struct ia64_operand *self, ia64_insn value,
163 
                 ia64_insn *code, int scale)
164 
{
165 
  BFD_HOST_64_BIT svalue = value, sign_bit = 0;
166 
  ia64_insn new_insn = 0;
167 
  int i;
168 
 
169 
  svalue >>= scale;
170 
 
171 
  for (i = 0; i < NELEMS (self->field) && self->field[i].bits; ++i)
172 
    {
173 
      new_insn |= ((svalue & ((((ia64_insn) 1) << self->field[i].bits) - 1))
174 
                 << self->field[i].shift);
175 
      sign_bit = (svalue >> (self->field[i].bits - 1)) & 1;
176 
      svalue >>= self->field[i].bits;
177 
    }
178 
  if ((!sign_bit && svalue != 0) || (sign_bit && svalue != -1))
179 
    return "integer operand out of range";
180 
 
181 
  *code |= new_insn;
182 
  return 0;
183 
}
184 
 
185 
static const char*
186 
ext_imms_scaled (const struct ia64_operand *self, ia64_insn code,
187 
                 ia64_insn *valuep, int scale)
188 
{
189 
  int i, bits = 0, total = 0;
190 
  BFD_HOST_64_BIT val = 0, sign;
191 
 
192 
  for (i = 0; i < NELEMS (self->field) && self->field[i].bits; ++i)
193 
    {
194 
      bits = self->field[i].bits;
195 
      val |= ((code >> self->field[i].shift)
196 
              & ((((BFD_HOST_U_64_BIT) 1) << bits) - 1)) << total;
197 
      total += bits;
198 
    }
199 
  /* sign extend: */
200 
  sign = (BFD_HOST_64_BIT) 1 << (total - 1);
201 
  val = (val ^ sign) - sign;
202 
 
203 
  *valuep = (val << scale);
204 
  return 0;
205 
}
206 
 
207 
static const char*
208 
ins_imms (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
209 
{
210 
  return ins_imms_scaled (self, value, code, 0);
211 
}
212 
 
213 
static const char*
214 
ins_immsu4 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
215 
{
216 
  value = ((value & 0xffffffff) ^ 0x80000000) - 0x80000000;
217 
 
218 
  return ins_imms_scaled (self, value, code, 0);
219 
}
220 
 
221 
static const char*
222 
ext_imms (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
223 
{
224 
  return ext_imms_scaled (self, code, valuep, 0);
225 
}
226 
 
227 
static const char*
228 
ins_immsm1 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
229 
{
230 
  --value;
231 
  return ins_imms_scaled (self, value, code, 0);
232 
}
233 
 
234 
static const char*
235 
ins_immsm1u4 (const struct ia64_operand *self, ia64_insn value,
236 
              ia64_insn *code)
237 
{
238 
  value = ((value & 0xffffffff) ^ 0x80000000) - 0x80000000;
239 
 
240 
  --value;
241 
  return ins_imms_scaled (self, value, code, 0);
242 
}
243 
 
244 
static const char*
245 
ext_immsm1 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
246 
{
247 
  const char *res = ext_imms_scaled (self, code, valuep, 0);
248 
 
249 
  ++*valuep;
250 
  return res;
251 
}
252 
 
253 
static const char*
254 
ins_imms1 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
255 
{
256 
  return ins_imms_scaled (self, value, code, 1);
257 
}
258 
 
259 
static const char*
260 
ext_imms1 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
261 
{
262 
  return ext_imms_scaled (self, code, valuep, 1);
263 
}
264 
 
265 
static const char*
266 
ins_imms4 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
267 
{
268 
  return ins_imms_scaled (self, value, code, 4);
269 
}
270 
 
271 
static const char*
272 
ext_imms4 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
273 
{
274 
  return ext_imms_scaled (self, code, valuep, 4);
275 
}
276 
 
277 
static const char*
278 
ins_imms16 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
279 
{
280 
  return ins_imms_scaled (self, value, code, 16);
281 
}
282 
 
283 
static const char*
284 
ext_imms16 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
285 
{
286 
  return ext_imms_scaled (self, code, valuep, 16);
287 
}
288 
 
289 
static const char*
290 
ins_cimmu (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
291 
{
292 
  ia64_insn mask = (((ia64_insn) 1) << self->field[0].bits) - 1;
293 
  return ins_immu (self, value ^ mask, code);
294 
}
295 
 
296 
static const char*
297 
ext_cimmu (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
298 
{
299 
  const char *result;
300 
  ia64_insn mask;
301 
 
302 
  mask = (((ia64_insn) 1) << self->field[0].bits) - 1;
303 
  result = ext_immu (self, code, valuep);
304 
  if (!result)
305 
    {
306 
      mask = (((ia64_insn) 1) << self->field[0].bits) - 1;
307 
      *valuep ^= mask;
308 
    }
309 
  return result;
310 
}
311 
 
312 
static const char*
313 
ins_cnt (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
314 
{
315 
  --value;
316 
  if (value >= ((BFD_HOST_U_64_BIT) 1) << self->field[0].bits)
317 
    return "count out of range";
318 
 
319 
  *code |= value << self->field[0].shift;
320 
  return 0;
321 
}
322 
 
323 
static const char*
324 
ext_cnt (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
325 
{
326 
  *valuep = ((code >> self->field[0].shift)
327 
             & ((((BFD_HOST_U_64_BIT) 1) << self->field[0].bits) - 1)) + 1;
328 
  return 0;
329 
}
330 
 
331 
static const char*
332 
ins_cnt2b (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
333 
{
334 
  --value;
335 
 
336 
  if (value > 2)
337 
    return "count must be in range 1..3";
338 
 
339 
  *code |= value << self->field[0].shift;
340 
  return 0;
341 
}
342 
 
343 
static const char*
344 
ext_cnt2b (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
345 
{
346 
  *valuep = ((code >> self->field[0].shift) & 0x3) + 1;
347 
  return 0;
348 
}
349 
 
350 
static const char*
351 
ins_cnt2c (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
352 
{
353 
  switch (value)
354 
    {
355 
    case 0:      value = 0; break;
356 
    case 7:     value = 1; break;
357 
    case 15:    value = 2; break;
358 
    case 16:    value = 3; break;
359 
    default:    return "count must be 0, 7, 15, or 16";
360 
    }
361 
  *code |= value << self->field[0].shift;
362 
  return 0;
363 
}
364 
 
365 
static const char*
366 
ext_cnt2c (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
367 
{
368 
  ia64_insn value;
369 
 
370 
  value = (code >> self->field[0].shift) & 0x3;
371 
  switch (value)
372 
    {
373 
    case 0: value =  0; break;
374 
    case 1: value =  7; break;
375 
    case 2: value = 15; break;
376 
    case 3: value = 16; break;
377 
    }
378 
  *valuep = value;
379 
  return 0;
380 
}
381 
 
382 
static const char*
383 
ins_inc3 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
384 
{
385 
  BFD_HOST_64_BIT val = value;
386 
  BFD_HOST_U_64_BIT sign = 0;
387 
 
388 
  if (val < 0)
389 
    {
390 
      sign = 0x4;
391 
      value = -value;
392 
    }
393 
  switch (value)
394 
    {
395 
    case  1:    value = 3; break;
396 
    case  4:    value = 2; break;
397 
    case  8:    value = 1; break;
398 
    case 16:    value = 0; break;
399 
    default:    return "count must be +/- 1, 4, 8, or 16";
400 
    }
401 
  *code |= (sign | value) << self->field[0].shift;
402 
  return 0;
403 
}
404 
 
405 
static const char*
406 
ext_inc3 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
407 
{
408 
  BFD_HOST_64_BIT val;
409 
  int negate;
410 
 
411 
  val = (code >> self->field[0].shift) & 0x7;
412 
  negate = val & 0x4;
413 
  switch (val & 0x3)
414 
    {
415 
    case 0: val = 16; break;
416 
    case 1: val =  8; break;
417 
    case 2: val =  4; break;
418 
    case 3: val =  1; break;
419 
    }
420 
  if (negate)
421 
    val = -val;
422 
 
423 
  *valuep = val;
424 
  return 0;
425 
}
426 
 
427 
#define CST     IA64_OPND_CLASS_CST
428 
#define REG     IA64_OPND_CLASS_REG
429 
#define IND     IA64_OPND_CLASS_IND
430 
#define ABS     IA64_OPND_CLASS_ABS
431 
#define REL     IA64_OPND_CLASS_REL
432 
 
433 
#define SDEC    IA64_OPND_FLAG_DECIMAL_SIGNED
434 
#define UDEC    IA64_OPND_FLAG_DECIMAL_UNSIGNED
435 
 
436 
const struct ia64_operand elf64_ia64_operands[IA64_OPND_COUNT] =
437 
  {
438 
    /* constants: */
439 
    { CST, ins_const, ext_const, "NIL",         {{ 0, 0}}, 0, "<none>" },
440 
    { CST, ins_const, ext_const, "ar.csd",      {{ 0, 0}}, 0, "ar.csd" },
441 
    { CST, ins_const, ext_const, "ar.ccv",      {{ 0, 0}}, 0, "ar.ccv" },
442 
    { CST, ins_const, ext_const, "ar.pfs",      {{ 0, 0}}, 0, "ar.pfs" },
443 
    { CST, ins_const, ext_const, "1",           {{ 0, 0}}, 0, "1" },
444 
    { CST, ins_const, ext_const, "8",           {{ 0, 0}}, 0, "8" },
445 
    { CST, ins_const, ext_const, "16",          {{ 0, 0}}, 0, "16" },
446 
    { CST, ins_const, ext_const, "r0",          {{ 0, 0}}, 0, "r0" },
447 
    { CST, ins_const, ext_const, "ip",          {{ 0, 0}}, 0, "ip" },
448 
    { CST, ins_const, ext_const, "pr",          {{ 0, 0}}, 0, "pr" },
449 
    { CST, ins_const, ext_const, "pr.rot",      {{ 0, 0}}, 0, "pr.rot" },
450 
    { CST, ins_const, ext_const, "psr",         {{ 0, 0}}, 0, "psr" },
451 
    { CST, ins_const, ext_const, "psr.l",       {{ 0, 0}}, 0, "psr.l" },
452 
    { CST, ins_const, ext_const, "psr.um",      {{ 0, 0}}, 0, "psr.um" },
453 
 
454 
    /* register operands: */
455 
    { REG, ins_reg,   ext_reg,  "ar", {{ 7, 20}}, 0,             /* AR3 */
456 
      "an application register" },
457 
    { REG, ins_reg,   ext_reg,   "b", {{ 3,  6}}, 0,             /* B1 */
458 
      "a branch register" },
459 
    { REG, ins_reg,   ext_reg,   "b", {{ 3, 13}}, 0,             /* B2 */
460 
      "a branch register"},
461 
    { REG, ins_reg,   ext_reg,  "cr", {{ 7, 20}}, 0,             /* CR */
462 
      "a control register"},
463 
    { REG, ins_reg,   ext_reg,   "f", {{ 7,  6}}, 0,             /* F1 */
464 
      "a floating-point register" },
465 
    { REG, ins_reg,   ext_reg,   "f", {{ 7, 13}}, 0,             /* F2 */
466 
      "a floating-point register" },
467 
    { REG, ins_reg,   ext_reg,   "f", {{ 7, 20}}, 0,             /* F3 */
468 
      "a floating-point register" },
469 
    { REG, ins_reg,   ext_reg,   "f", {{ 7, 27}}, 0,             /* F4 */
470 
      "a floating-point register" },
471 
    { REG, ins_reg,   ext_reg,   "p", {{ 6,  6}}, 0,             /* P1 */
472 
      "a predicate register" },
473 
    { REG, ins_reg,   ext_reg,   "p", {{ 6, 27}}, 0,             /* P2 */
474 
      "a predicate register" },
475 
    { REG, ins_reg,   ext_reg,   "r", {{ 7,  6}}, 0,             /* R1 */
476 
      "a general register" },
477 
    { REG, ins_reg,   ext_reg,   "r", {{ 7, 13}}, 0,             /* R2 */
478 
      "a general register" },
479 
    { REG, ins_reg,   ext_reg,   "r", {{ 7, 20}}, 0,             /* R3 */
480 
      "a general register" },
481 
    { REG, ins_reg,   ext_reg,   "r", {{ 2, 20}}, 0,             /* R3_2 */
482 
      "a general register r0-r3" },
483 
 
484 
    /* memory operands: */
485 
    { IND, ins_reg,   ext_reg,  "",      {{7, 20}}, 0,           /* MR3 */
486 
      "a memory address" },
487 
 
488 
    /* indirect operands: */
489 
    { IND, ins_reg,   ext_reg,  "cpuid", {{7, 20}}, 0,           /* CPUID_R3 */
490 
      "a cpuid register" },
491 
    { IND, ins_reg,   ext_reg,  "dbr",   {{7, 20}}, 0,           /* DBR_R3 */
492 
      "a dbr register" },
493 
    { IND, ins_reg,   ext_reg,  "dtr",   {{7, 20}}, 0,           /* DTR_R3 */
494 
      "a dtr register" },
495 
    { IND, ins_reg,   ext_reg,  "itr",   {{7, 20}}, 0,           /* ITR_R3 */
496 
      "an itr register" },
497 
    { IND, ins_reg,   ext_reg,  "ibr",   {{7, 20}}, 0,           /* IBR_R3 */
498 
      "an ibr register" },
499 
    { IND, ins_reg,   ext_reg,  "msr",   {{7, 20}}, 0,           /* MSR_R3 */
500 
      "an msr register" },
501 
    { IND, ins_reg,   ext_reg,  "pkr",   {{7, 20}}, 0,           /* PKR_R3 */
502 
      "a pkr register" },
503 
    { IND, ins_reg,   ext_reg,  "pmc",   {{7, 20}}, 0,           /* PMC_R3 */
504 
      "a pmc register" },
505 
    { IND, ins_reg,   ext_reg,  "pmd",   {{7, 20}}, 0,           /* PMD_R3 */
506 
      "a pmd register" },
507 
    { IND, ins_reg,   ext_reg,  "rr",    {{7, 20}}, 0,           /* RR_R3 */
508 
      "an rr register" },
509 
 
510 
    /* immediate operands: */
511 
    { ABS, ins_cimmu, ext_cimmu, 0, {{ 5, 20 }}, UDEC,           /* CCNT5 */
512 
      "a 5-bit count (0-31)" },
513 
    { ABS, ins_cnt,   ext_cnt,   0, {{ 2, 27 }}, UDEC,           /* CNT2a */
514 
      "a 2-bit count (1-4)" },
515 
    { ABS, ins_cnt2b, ext_cnt2b, 0, {{ 2, 27 }}, UDEC,           /* CNT2b */
516 
      "a 2-bit count (1-3)" },
517 
    { ABS, ins_cnt2c, ext_cnt2c, 0, {{ 2, 30 }}, UDEC,           /* CNT2c */
518 
      "a count (0, 7, 15, or 16)" },
519 
    { ABS, ins_immu,  ext_immu,  0, {{ 5, 14}}, UDEC,            /* CNT5 */
520 
      "a 5-bit count (0-31)" },
521 
    { ABS, ins_immu,  ext_immu,  0, {{ 6, 27}}, UDEC,            /* CNT6 */
522 
      "a 6-bit count (0-63)" },
523 
    { ABS, ins_cimmu, ext_cimmu, 0, {{ 6, 20}}, UDEC,            /* CPOS6a */
524 
      "a 6-bit bit pos (0-63)" },
525 
    { ABS, ins_cimmu, ext_cimmu, 0, {{ 6, 14}}, UDEC,            /* CPOS6b */
526 
      "a 6-bit bit pos (0-63)" },
527 
    { ABS, ins_cimmu, ext_cimmu, 0, {{ 6, 31}}, UDEC,            /* CPOS6c */
528 
      "a 6-bit bit pos (0-63)" },
529 
    { ABS, ins_imms,  ext_imms,  0, {{ 1, 36}}, SDEC,            /* IMM1 */
530 
      "a 1-bit integer (-1, 0)" },
531 
    { ABS, ins_immu,  ext_immu,  0, {{ 2, 13}}, UDEC,            /* IMMU2 */
532 
      "a 2-bit unsigned (0-3)" },
533 
    { ABS, ins_immu5b,  ext_immu5b,  0, {{ 5, 14}}, UDEC,        /* IMMU5b */
534 
      "a 5-bit unsigned (32 + (0-31))" },
535 
    { ABS, ins_immu,  ext_immu,  0, {{ 7, 13}}, 0,                /* IMMU7a */
536 
      "a 7-bit unsigned (0-127)" },
537 
    { ABS, ins_immu,  ext_immu,  0, {{ 7, 20}}, 0,                /* IMMU7b */
538 
      "a 7-bit unsigned (0-127)" },
539 
    { ABS, ins_immu,  ext_immu,  0, {{ 7, 13}}, UDEC,            /* SOF */
540 
      "a frame size (register count)" },
541 
    { ABS, ins_immu,  ext_immu,  0, {{ 7, 20}}, UDEC,            /* SOL */
542 
      "a local register count" },
543 
    { ABS, ins_immus8,ext_immus8,0, {{ 4, 27}}, UDEC,            /* SOR */
544 
      "a rotating register count (integer multiple of 8)" },
545 
    { ABS, ins_imms,  ext_imms,  0,                              /* IMM8 */
546 
      {{ 7, 13}, { 1, 36}}, SDEC,
547 
      "an 8-bit integer (-128-127)" },
548 
    { ABS, ins_immsu4,  ext_imms,  0,                            /* IMM8U4 */
549 
      {{ 7, 13}, { 1, 36}}, SDEC,
550 
      "an 8-bit signed integer for 32-bit unsigned compare (-128-127)" },
551 
    { ABS, ins_immsm1,  ext_immsm1,  0,                          /* IMM8M1 */
552 
      {{ 7, 13}, { 1, 36}}, SDEC,
553 
      "an 8-bit integer (-127-128)" },
554 
    { ABS, ins_immsm1u4,  ext_immsm1,  0,                        /* IMM8M1U4 */
555 
      {{ 7, 13}, { 1, 36}}, SDEC,
556 
      "an 8-bit integer for 32-bit unsigned compare (-127-(-1),1-128,0x100000000)" },
557 
    { ABS, ins_immsm1,  ext_immsm1,  0,                          /* IMM8M1U8 */
558 
      {{ 7, 13}, { 1, 36}}, SDEC,
559 
      "an 8-bit integer for 64-bit unsigned compare (-127-(-1),1-128,0x10000000000000000)" },
560 
    { ABS, ins_immu,  ext_immu,  0, {{ 2, 33}, { 7, 20}}, 0,      /* IMMU9 */
561 
      "a 9-bit unsigned (0-511)" },
562 
    { ABS, ins_imms,  ext_imms,  0,                              /* IMM9a */
563 
      {{ 7,  6}, { 1, 27}, { 1, 36}}, SDEC,
564 
      "a 9-bit integer (-256-255)" },
565 
    { ABS, ins_imms,  ext_imms, 0,                               /* IMM9b */
566 
      {{ 7, 13}, { 1, 27}, { 1, 36}}, SDEC,
567 
      "a 9-bit integer (-256-255)" },
568 
    { ABS, ins_imms,  ext_imms, 0,                               /* IMM14 */
569 
      {{ 7, 13}, { 6, 27}, { 1, 36}}, SDEC,
570 
      "a 14-bit integer (-8192-8191)" },
571 
    { ABS, ins_imms1, ext_imms1, 0,                              /* IMM17 */
572 
      {{ 7,  6}, { 8, 24}, { 1, 36}}, 0,
573 
      "a 17-bit integer (-65536-65535)" },
574 
    { ABS, ins_immu,  ext_immu,  0, {{20,  6}, { 1, 36}}, 0,      /* IMMU21 */
575 
      "a 21-bit unsigned" },
576 
    { ABS, ins_imms,  ext_imms,  0,                              /* IMM22 */
577 
      {{ 7, 13}, { 9, 27}, { 5, 22}, { 1, 36}}, SDEC,
578 
      "a 22-bit signed integer" },
579 
    { ABS, ins_immu,  ext_immu,  0,                              /* IMMU24 */
580 
      {{21,  6}, { 2, 31}, { 1, 36}}, 0,
581 
      "a 24-bit unsigned" },
582 
    { ABS, ins_imms16,ext_imms16,0, {{27,  6}, { 1, 36}}, 0,      /* IMM44 */
583 
      "a 44-bit unsigned (least 16 bits ignored/zeroes)" },
584 
    { ABS, ins_rsvd,  ext_rsvd, 0, {{0,  0}}, 0,            /* IMMU62 */
585 
      "a 62-bit unsigned" },
586 
    { ABS, ins_rsvd,  ext_rsvd, 0, {{0,  0}}, 0,            /* IMMU64 */
587 
      "a 64-bit unsigned" },
588 
    { ABS, ins_inc3,  ext_inc3,  0, {{ 3, 13}}, SDEC,            /* INC3 */
589 
      "an increment (+/- 1, 4, 8, or 16)" },
590 
    { ABS, ins_cnt,   ext_cnt,   0, {{ 4, 27}}, UDEC,            /* LEN4 */
591 
      "a 4-bit length (1-16)" },
592 
    { ABS, ins_cnt,   ext_cnt,   0, {{ 6, 27}}, UDEC,            /* LEN6 */
593 
      "a 6-bit length (1-64)" },
594 
    { ABS, ins_immu,  ext_immu,  0, {{ 4, 20}},  0,               /* MBTYPE4 */
595 
      "a mix type (@rev, @mix, @shuf, @alt, or @brcst)" },
596 
    { ABS, ins_immu,  ext_immu,  0, {{ 8, 20}},  0,               /* MBTYPE8 */
597 
      "an 8-bit mix type" },
598 
    { ABS, ins_immu,  ext_immu,  0, {{ 6, 14}}, UDEC,            /* POS6 */
599 
      "a 6-bit bit pos (0-63)" },
600 
    { REL, ins_imms4, ext_imms4, 0, {{ 7,  6}, { 2, 33}}, 0,      /* TAG13 */
601 
      "a branch tag" },
602 
    { REL, ins_imms4, ext_imms4, 0, {{ 9, 24}}, 0,                /* TAG13b */
603 
      "a branch tag" },
604 
    { REL, ins_imms4, ext_imms4, 0, {{20,  6}, { 1, 36}}, 0,      /* TGT25 */
605 
      "a branch target" },
606 
    { REL, ins_imms4, ext_imms4, 0,                              /* TGT25b */
607 
      {{ 7,  6}, {13, 20}, { 1, 36}}, 0,
608 
      "a branch target" },
609 
    { REL, ins_imms4, ext_imms4, 0, {{20, 13}, { 1, 36}}, 0,      /* TGT25c */
610 
      "a branch target" },
611 
    { REL, ins_rsvd, ext_rsvd, 0, {{0, 0}}, 0,                  /* TGT64  */
612 
      "a branch target" },
613 
 
614 
    { ABS, ins_const, ext_const, 0, {{0, 0}}, 0,            /* LDXMOV */
615 
      "ldxmov target" },
616 
  };

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