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Use fsqrt() to calculate float (rather than double) square root.
[thirdparty/binutils-gdb.git] / sim / aarch64 / simulator.c
1 /* simulator.c -- Interface for the AArch64 simulator.
2
3 Copyright (C) 2015-2016 Free Software Foundation, Inc.
4
5 Contributed by Red Hat.
6
7 This file is part of GDB.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21
22 #include "config.h"
23 #include <stdlib.h>
24 #include <stdio.h>
25 #include <string.h>
26 #include <sys/types.h>
27 #include <math.h>
28 #include <time.h>
29 #include <limits.h>
30
31 #include "simulator.h"
32 #include "cpustate.h"
33 #include "memory.h"
34
35 #define NO_SP 0
36 #define SP_OK 1
37
38 #define TST(_flag) (aarch64_test_CPSR_bit (cpu, _flag))
39 #define IS_SET(_X) (TST (( _X )) ? 1 : 0)
40 #define IS_CLEAR(_X) (TST (( _X )) ? 0 : 1)
41
42 /* Space saver macro. */
43 #define INSTR(HIGH, LOW) uimm (aarch64_get_instr (cpu), (HIGH), (LOW))
44
45 #define HALT_UNALLOC \
46 do \
47 { \
48 TRACE_DISASM (cpu, aarch64_get_PC (cpu)); \
49 TRACE_INSN (cpu, \
50 "Unallocated instruction detected at sim line %d," \
51 " exe addr %" PRIx64, \
52 __LINE__, aarch64_get_PC (cpu)); \
53 sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu),\
54 sim_stopped, SIM_SIGILL); \
55 } \
56 while (0)
57
58 #define HALT_NYI \
59 do \
60 { \
61 TRACE_DISASM (cpu, aarch64_get_PC (cpu)); \
62 TRACE_INSN (cpu, \
63 "Unimplemented instruction detected at sim line %d," \
64 " exe addr %" PRIx64, \
65 __LINE__, aarch64_get_PC (cpu)); \
66 if (! TRACE_ANY_P (cpu)) \
67 { \
68 sim_io_eprintf (CPU_STATE (cpu), "SIM Error: Unimplemented instruction: "); \
69 trace_disasm (CPU_STATE (cpu), cpu, aarch64_get_PC (cpu)); \
70 } \
71 sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu),\
72 sim_stopped, SIM_SIGABRT); \
73 } \
74 while (0)
75
76 #define NYI_assert(HI, LO, EXPECTED) \
77 do \
78 { \
79 if (INSTR ((HI), (LO)) != (EXPECTED)) \
80 HALT_NYI; \
81 } \
82 while (0)
83
84 /* Helper functions used by expandLogicalImmediate. */
85
86 /* for i = 1, ... N result<i-1> = 1 other bits are zero */
87 static inline uint64_t
88 ones (int N)
89 {
90 return (N == 64 ? (uint64_t)-1UL : ((1UL << N) - 1));
91 }
92
93 /* result<0> to val<N> */
94 static inline uint64_t
95 pickbit (uint64_t val, int N)
96 {
97 return pickbits64 (val, N, N);
98 }
99
100 static uint64_t
101 expand_logical_immediate (uint32_t S, uint32_t R, uint32_t N)
102 {
103 uint64_t mask;
104 uint64_t imm;
105 unsigned simd_size;
106
107 /* The immediate value is S+1 bits to 1, left rotated by SIMDsize - R
108 (in other words, right rotated by R), then replicated. */
109 if (N != 0)
110 {
111 simd_size = 64;
112 mask = 0xffffffffffffffffull;
113 }
114 else
115 {
116 switch (S)
117 {
118 case 0x00 ... 0x1f: /* 0xxxxx */ simd_size = 32; break;
119 case 0x20 ... 0x2f: /* 10xxxx */ simd_size = 16; S &= 0xf; break;
120 case 0x30 ... 0x37: /* 110xxx */ simd_size = 8; S &= 0x7; break;
121 case 0x38 ... 0x3b: /* 1110xx */ simd_size = 4; S &= 0x3; break;
122 case 0x3c ... 0x3d: /* 11110x */ simd_size = 2; S &= 0x1; break;
123 default: return 0;
124 }
125 mask = (1ull << simd_size) - 1;
126 /* Top bits are IGNORED. */
127 R &= simd_size - 1;
128 }
129
130 /* NOTE: if S = simd_size - 1 we get 0xf..f which is rejected. */
131 if (S == simd_size - 1)
132 return 0;
133
134 /* S+1 consecutive bits to 1. */
135 /* NOTE: S can't be 63 due to detection above. */
136 imm = (1ull << (S + 1)) - 1;
137
138 /* Rotate to the left by simd_size - R. */
139 if (R != 0)
140 imm = ((imm << (simd_size - R)) & mask) | (imm >> R);
141
142 /* Replicate the value according to SIMD size. */
143 switch (simd_size)
144 {
145 case 2: imm = (imm << 2) | imm;
146 case 4: imm = (imm << 4) | imm;
147 case 8: imm = (imm << 8) | imm;
148 case 16: imm = (imm << 16) | imm;
149 case 32: imm = (imm << 32) | imm;
150 case 64: break;
151 default: return 0;
152 }
153
154 return imm;
155 }
156
157 /* Instr[22,10] encodes N immr and imms. we want a lookup table
158 for each possible combination i.e. 13 bits worth of int entries. */
159 #define LI_TABLE_SIZE (1 << 13)
160 static uint64_t LITable[LI_TABLE_SIZE];
161
162 void
163 aarch64_init_LIT_table (void)
164 {
165 unsigned index;
166
167 for (index = 0; index < LI_TABLE_SIZE; index++)
168 {
169 uint32_t N = uimm (index, 12, 12);
170 uint32_t immr = uimm (index, 11, 6);
171 uint32_t imms = uimm (index, 5, 0);
172
173 LITable [index] = expand_logical_immediate (imms, immr, N);
174 }
175 }
176
177 static void
178 dexNotify (sim_cpu *cpu)
179 {
180 /* instr[14,0] == type : 0 ==> method entry, 1 ==> method reentry
181 2 ==> exit Java, 3 ==> start next bytecode. */
182 uint32_t type = INSTR (14, 0);
183
184 TRACE_EVENTS (cpu, "Notify Insn encountered, type = 0x%x", type);
185
186 switch (type)
187 {
188 case 0:
189 /* aarch64_notifyMethodEntry (aarch64_get_reg_u64 (cpu, R23, 0),
190 aarch64_get_reg_u64 (cpu, R22, 0)); */
191 break;
192 case 1:
193 /* aarch64_notifyMethodReentry (aarch64_get_reg_u64 (cpu, R23, 0),
194 aarch64_get_reg_u64 (cpu, R22, 0)); */
195 break;
196 case 2:
197 /* aarch64_notifyMethodExit (); */
198 break;
199 case 3:
200 /* aarch64_notifyBCStart (aarch64_get_reg_u64 (cpu, R23, 0),
201 aarch64_get_reg_u64 (cpu, R22, 0)); */
202 break;
203 }
204 }
205
206 /* secondary decode within top level groups */
207
208 static void
209 dexPseudo (sim_cpu *cpu)
210 {
211 /* assert instr[28,27] = 00
212
213 We provide 2 pseudo instructions:
214
215 HALT stops execution of the simulator causing an immediate
216 return to the x86 code which entered it.
217
218 CALLOUT initiates recursive entry into x86 code. A register
219 argument holds the address of the x86 routine. Immediate
220 values in the instruction identify the number of general
221 purpose and floating point register arguments to be passed
222 and the type of any value to be returned. */
223
224 uint32_t PSEUDO_HALT = 0xE0000000U;
225 uint32_t PSEUDO_CALLOUT = 0x00018000U;
226 uint32_t PSEUDO_CALLOUTR = 0x00018001U;
227 uint32_t PSEUDO_NOTIFY = 0x00014000U;
228 uint32_t dispatch;
229
230 if (aarch64_get_instr (cpu) == PSEUDO_HALT)
231 {
232 TRACE_EVENTS (cpu, " Pseudo Halt Instruction");
233 sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu),
234 sim_stopped, SIM_SIGTRAP);
235 }
236
237 dispatch = INSTR (31, 15);
238
239 /* We do not handle callouts at the moment. */
240 if (dispatch == PSEUDO_CALLOUT || dispatch == PSEUDO_CALLOUTR)
241 {
242 TRACE_EVENTS (cpu, " Callout");
243 sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu),
244 sim_stopped, SIM_SIGABRT);
245 }
246
247 else if (dispatch == PSEUDO_NOTIFY)
248 dexNotify (cpu);
249
250 else
251 HALT_UNALLOC;
252 }
253
254 /* Load-store single register (unscaled offset)
255 These instructions employ a base register plus an unscaled signed
256 9 bit offset.
257
258 N.B. the base register (source) can be Xn or SP. all other
259 registers may not be SP. */
260
261 /* 32 bit load 32 bit unscaled signed 9 bit. */
262 static void
263 ldur32 (sim_cpu *cpu, int32_t offset)
264 {
265 unsigned rn = INSTR (9, 5);
266 unsigned rt = INSTR (4, 0);
267
268 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
269 aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u32
270 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK)
271 + offset));
272 }
273
274 /* 64 bit load 64 bit unscaled signed 9 bit. */
275 static void
276 ldur64 (sim_cpu *cpu, int32_t offset)
277 {
278 unsigned rn = INSTR (9, 5);
279 unsigned rt = INSTR (4, 0);
280
281 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
282 aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u64
283 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK)
284 + offset));
285 }
286
287 /* 32 bit load zero-extended byte unscaled signed 9 bit. */
288 static void
289 ldurb32 (sim_cpu *cpu, int32_t offset)
290 {
291 unsigned rn = INSTR (9, 5);
292 unsigned rt = INSTR (4, 0);
293
294 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
295 aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u8
296 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK)
297 + offset));
298 }
299
300 /* 32 bit load sign-extended byte unscaled signed 9 bit. */
301 static void
302 ldursb32 (sim_cpu *cpu, int32_t offset)
303 {
304 unsigned rn = INSTR (9, 5);
305 unsigned rt = INSTR (4, 0);
306
307 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
308 aarch64_set_reg_u64 (cpu, rt, NO_SP, (uint32_t) aarch64_get_mem_s8
309 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK)
310 + offset));
311 }
312
313 /* 64 bit load sign-extended byte unscaled signed 9 bit. */
314 static void
315 ldursb64 (sim_cpu *cpu, int32_t offset)
316 {
317 unsigned rn = INSTR (9, 5);
318 unsigned rt = INSTR (4, 0);
319
320 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
321 aarch64_set_reg_s64 (cpu, rt, NO_SP, aarch64_get_mem_s8
322 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK)
323 + offset));
324 }
325
326 /* 32 bit load zero-extended short unscaled signed 9 bit */
327 static void
328 ldurh32 (sim_cpu *cpu, int32_t offset)
329 {
330 unsigned rn = INSTR (9, 5);
331 unsigned rd = INSTR (4, 0);
332
333 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
334 aarch64_set_reg_u64 (cpu, rd, NO_SP, aarch64_get_mem_u16
335 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK)
336 + offset));
337 }
338
339 /* 32 bit load sign-extended short unscaled signed 9 bit */
340 static void
341 ldursh32 (sim_cpu *cpu, int32_t offset)
342 {
343 unsigned rn = INSTR (9, 5);
344 unsigned rd = INSTR (4, 0);
345
346 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
347 aarch64_set_reg_u64 (cpu, rd, NO_SP, (uint32_t) aarch64_get_mem_s16
348 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK)
349 + offset));
350 }
351
352 /* 64 bit load sign-extended short unscaled signed 9 bit */
353 static void
354 ldursh64 (sim_cpu *cpu, int32_t offset)
355 {
356 unsigned rn = INSTR (9, 5);
357 unsigned rt = INSTR (4, 0);
358
359 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
360 aarch64_set_reg_s64 (cpu, rt, NO_SP, aarch64_get_mem_s16
361 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK)
362 + offset));
363 }
364
365 /* 64 bit load sign-extended word unscaled signed 9 bit */
366 static void
367 ldursw (sim_cpu *cpu, int32_t offset)
368 {
369 unsigned rn = INSTR (9, 5);
370 unsigned rd = INSTR (4, 0);
371
372 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
373 aarch64_set_reg_u64 (cpu, rd, NO_SP, (uint32_t) aarch64_get_mem_s32
374 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK)
375 + offset));
376 }
377
378 /* N.B. with stores the value in source is written to the address
379 identified by source2 modified by offset. */
380
381 /* 32 bit store 32 bit unscaled signed 9 bit. */
382 static void
383 stur32 (sim_cpu *cpu, int32_t offset)
384 {
385 unsigned rn = INSTR (9, 5);
386 unsigned rd = INSTR (4, 0);
387
388 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
389 aarch64_set_mem_u32 (cpu,
390 aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset,
391 aarch64_get_reg_u32 (cpu, rd, NO_SP));
392 }
393
394 /* 64 bit store 64 bit unscaled signed 9 bit */
395 static void
396 stur64 (sim_cpu *cpu, int32_t offset)
397 {
398 unsigned rn = INSTR (9, 5);
399 unsigned rd = INSTR (4, 0);
400
401 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
402 aarch64_set_mem_u64 (cpu,
403 aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset,
404 aarch64_get_reg_u64 (cpu, rd, NO_SP));
405 }
406
407 /* 32 bit store byte unscaled signed 9 bit */
408 static void
409 sturb (sim_cpu *cpu, int32_t offset)
410 {
411 unsigned rn = INSTR (9, 5);
412 unsigned rd = INSTR (4, 0);
413
414 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
415 aarch64_set_mem_u8 (cpu,
416 aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset,
417 aarch64_get_reg_u8 (cpu, rd, NO_SP));
418 }
419
420 /* 32 bit store short unscaled signed 9 bit */
421 static void
422 sturh (sim_cpu *cpu, int32_t offset)
423 {
424 unsigned rn = INSTR (9, 5);
425 unsigned rd = INSTR (4, 0);
426
427 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
428 aarch64_set_mem_u16 (cpu,
429 aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset,
430 aarch64_get_reg_u16 (cpu, rd, NO_SP));
431 }
432
433 /* Load single register pc-relative label
434 Offset is a signed 19 bit immediate count in words
435 rt may not be SP. */
436
437 /* 32 bit pc-relative load */
438 static void
439 ldr32_pcrel (sim_cpu *cpu, int32_t offset)
440 {
441 unsigned rd = INSTR (4, 0);
442
443 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
444 aarch64_set_reg_u64 (cpu, rd, NO_SP,
445 aarch64_get_mem_u32
446 (cpu, aarch64_get_PC (cpu) + offset * 4));
447 }
448
449 /* 64 bit pc-relative load */
450 static void
451 ldr_pcrel (sim_cpu *cpu, int32_t offset)
452 {
453 unsigned rd = INSTR (4, 0);
454
455 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
456 aarch64_set_reg_u64 (cpu, rd, NO_SP,
457 aarch64_get_mem_u64
458 (cpu, aarch64_get_PC (cpu) + offset * 4));
459 }
460
461 /* sign extended 32 bit pc-relative load */
462 static void
463 ldrsw_pcrel (sim_cpu *cpu, int32_t offset)
464 {
465 unsigned rd = INSTR (4, 0);
466
467 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
468 aarch64_set_reg_u64 (cpu, rd, NO_SP,
469 aarch64_get_mem_s32
470 (cpu, aarch64_get_PC (cpu) + offset * 4));
471 }
472
473 /* float pc-relative load */
474 static void
475 fldrs_pcrel (sim_cpu *cpu, int32_t offset)
476 {
477 unsigned int rd = INSTR (4, 0);
478
479 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
480 aarch64_set_vec_u32 (cpu, rd, 0,
481 aarch64_get_mem_u32
482 (cpu, aarch64_get_PC (cpu) + offset * 4));
483 }
484
485 /* double pc-relative load */
486 static void
487 fldrd_pcrel (sim_cpu *cpu, int32_t offset)
488 {
489 unsigned int st = INSTR (4, 0);
490
491 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
492 aarch64_set_vec_u64 (cpu, st, 0,
493 aarch64_get_mem_u64
494 (cpu, aarch64_get_PC (cpu) + offset * 4));
495 }
496
497 /* long double pc-relative load. */
498 static void
499 fldrq_pcrel (sim_cpu *cpu, int32_t offset)
500 {
501 unsigned int st = INSTR (4, 0);
502 uint64_t addr = aarch64_get_PC (cpu) + offset * 4;
503 FRegister a;
504
505 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
506 aarch64_get_mem_long_double (cpu, addr, & a);
507 aarch64_set_FP_long_double (cpu, st, a);
508 }
509
510 /* This can be used to scale an offset by applying
511 the requisite shift. the second argument is either
512 16, 32 or 64. */
513
514 #define SCALE(_offset, _elementSize) \
515 ((_offset) << ScaleShift ## _elementSize)
516
517 /* This can be used to optionally scale a register derived offset
518 by applying the requisite shift as indicated by the Scaling
519 argument. The second argument is either Byte, Short, Word
520 or Long. The third argument is either Scaled or Unscaled.
521 N.B. when _Scaling is Scaled the shift gets ANDed with
522 all 1s while when it is Unscaled it gets ANDed with 0. */
523
524 #define OPT_SCALE(_offset, _elementType, _Scaling) \
525 ((_offset) << (_Scaling ? ScaleShift ## _elementType : 0))
526
527 /* This can be used to zero or sign extend a 32 bit register derived
528 value to a 64 bit value. the first argument must be the value as
529 a uint32_t and the second must be either UXTW or SXTW. The result
530 is returned as an int64_t. */
531
532 static inline int64_t
533 extend (uint32_t value, Extension extension)
534 {
535 union
536 {
537 uint32_t u;
538 int32_t n;
539 } x;
540
541 /* A branchless variant of this ought to be possible. */
542 if (extension == UXTW || extension == NoExtension)
543 return value;
544
545 x.u = value;
546 return x.n;
547 }
548
549 /* Scalar Floating Point
550
551 FP load/store single register (4 addressing modes)
552
553 N.B. the base register (source) can be the stack pointer.
554 The secondary source register (source2) can only be an Xn register. */
555
556 /* Load 32 bit unscaled signed 9 bit with pre- or post-writeback. */
557 static void
558 fldrs_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
559 {
560 unsigned rn = INSTR (9, 5);
561 unsigned st = INSTR (4, 0);
562 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
563
564 if (wb != Post)
565 address += offset;
566
567 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
568 aarch64_set_vec_u32 (cpu, st, 0, aarch64_get_mem_u32 (cpu, address));
569 if (wb == Post)
570 address += offset;
571
572 if (wb != NoWriteBack)
573 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
574 }
575
576 /* Load 8 bit with unsigned 12 bit offset. */
577 static void
578 fldrb_abs (sim_cpu *cpu, uint32_t offset)
579 {
580 unsigned rd = INSTR (4, 0);
581 unsigned rn = INSTR (9, 5);
582 uint64_t addr = aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset;
583
584 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
585 aarch64_set_vec_u8 (cpu, rd, 0, aarch64_get_mem_u32 (cpu, addr));
586 }
587
588 /* Load 16 bit scaled unsigned 12 bit. */
589 static void
590 fldrh_abs (sim_cpu *cpu, uint32_t offset)
591 {
592 unsigned rd = INSTR (4, 0);
593 unsigned rn = INSTR (9, 5);
594 uint64_t addr = aarch64_get_reg_u64 (cpu, rn, SP_OK) + SCALE (offset, 16);
595
596 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
597 aarch64_set_vec_u16 (cpu, rd, 0, aarch64_get_mem_u16 (cpu, addr));
598 }
599
600 /* Load 32 bit scaled unsigned 12 bit. */
601 static void
602 fldrs_abs (sim_cpu *cpu, uint32_t offset)
603 {
604 unsigned rd = INSTR (4, 0);
605 unsigned rn = INSTR (9, 5);
606 uint64_t addr = aarch64_get_reg_u64 (cpu, rn, SP_OK) + SCALE (offset, 32);
607
608 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
609 aarch64_set_vec_u32 (cpu, rd, 0, aarch64_get_mem_u32 (cpu, addr));
610 }
611
612 /* Load 64 bit scaled unsigned 12 bit. */
613 static void
614 fldrd_abs (sim_cpu *cpu, uint32_t offset)
615 {
616 unsigned rd = INSTR (4, 0);
617 unsigned rn = INSTR (9, 5);
618 uint64_t addr = aarch64_get_reg_u64 (cpu, rn, SP_OK) + SCALE (offset, 64);
619
620 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
621 aarch64_set_vec_u64 (cpu, rd, 0, aarch64_get_mem_u64 (cpu, addr));
622 }
623
624 /* Load 128 bit scaled unsigned 12 bit. */
625 static void
626 fldrq_abs (sim_cpu *cpu, uint32_t offset)
627 {
628 unsigned rd = INSTR (4, 0);
629 unsigned rn = INSTR (9, 5);
630 uint64_t addr = aarch64_get_reg_u64 (cpu, rn, SP_OK) + SCALE (offset, 128);
631
632 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
633 aarch64_set_vec_u64 (cpu, rd, 0, aarch64_get_mem_u64 (cpu, addr));
634 aarch64_set_vec_u64 (cpu, rd, 1, aarch64_get_mem_u64 (cpu, addr + 8));
635 }
636
637 /* Load 32 bit scaled or unscaled zero- or sign-extended
638 32-bit register offset. */
639 static void
640 fldrs_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
641 {
642 unsigned rm = INSTR (20, 16);
643 unsigned rn = INSTR (9, 5);
644 unsigned st = INSTR (4, 0);
645 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
646 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension);
647 uint64_t displacement = OPT_SCALE (extended, 32, scaling);
648
649 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
650 aarch64_set_vec_u32 (cpu, st, 0, aarch64_get_mem_u32
651 (cpu, address + displacement));
652 }
653
654 /* Load 64 bit unscaled signed 9 bit with pre- or post-writeback. */
655 static void
656 fldrd_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
657 {
658 unsigned rn = INSTR (9, 5);
659 unsigned st = INSTR (4, 0);
660 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
661
662 if (wb != Post)
663 address += offset;
664
665 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
666 aarch64_set_vec_u64 (cpu, st, 0, aarch64_get_mem_u64 (cpu, address));
667
668 if (wb == Post)
669 address += offset;
670
671 if (wb != NoWriteBack)
672 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
673 }
674
675 /* Load 64 bit scaled or unscaled zero- or sign-extended 32-bit register offset. */
676 static void
677 fldrd_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
678 {
679 unsigned rm = INSTR (20, 16);
680 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension);
681 uint64_t displacement = OPT_SCALE (extended, 64, scaling);
682
683 fldrd_wb (cpu, displacement, NoWriteBack);
684 }
685
686 /* Load 128 bit unscaled signed 9 bit with pre- or post-writeback. */
687 static void
688 fldrq_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
689 {
690 FRegister a;
691 unsigned rn = INSTR (9, 5);
692 unsigned st = INSTR (4, 0);
693 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
694
695 if (wb != Post)
696 address += offset;
697
698 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
699 aarch64_get_mem_long_double (cpu, address, & a);
700 aarch64_set_FP_long_double (cpu, st, a);
701
702 if (wb == Post)
703 address += offset;
704
705 if (wb != NoWriteBack)
706 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
707 }
708
709 /* Load 128 bit scaled or unscaled zero- or sign-extended 32-bit register offset */
710 static void
711 fldrq_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
712 {
713 unsigned rm = INSTR (20, 16);
714 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension);
715 uint64_t displacement = OPT_SCALE (extended, 128, scaling);
716
717 fldrq_wb (cpu, displacement, NoWriteBack);
718 }
719
720 /* Memory Access
721
722 load-store single register
723 There are four addressing modes available here which all employ a
724 64 bit source (base) register.
725
726 N.B. the base register (source) can be the stack pointer.
727 The secondary source register (source2)can only be an Xn register.
728
729 Scaled, 12-bit, unsigned immediate offset, without pre- and
730 post-index options.
731 Unscaled, 9-bit, signed immediate offset with pre- or post-index
732 writeback.
733 scaled or unscaled 64-bit register offset.
734 scaled or unscaled 32-bit extended register offset.
735
736 All offsets are assumed to be raw from the decode i.e. the
737 simulator is expected to adjust scaled offsets based on the
738 accessed data size with register or extended register offset
739 versions the same applies except that in the latter case the
740 operation may also require a sign extend.
741
742 A separate method is provided for each possible addressing mode. */
743
744 /* 32 bit load 32 bit scaled unsigned 12 bit */
745 static void
746 ldr32_abs (sim_cpu *cpu, uint32_t offset)
747 {
748 unsigned rn = INSTR (9, 5);
749 unsigned rt = INSTR (4, 0);
750
751 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
752 /* The target register may not be SP but the source may be. */
753 aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u32
754 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK)
755 + SCALE (offset, 32)));
756 }
757
758 /* 32 bit load 32 bit unscaled signed 9 bit with pre- or post-writeback. */
759 static void
760 ldr32_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
761 {
762 unsigned rn = INSTR (9, 5);
763 unsigned rt = INSTR (4, 0);
764 uint64_t address;
765
766 if (rn == rt && wb != NoWriteBack)
767 HALT_UNALLOC;
768
769 address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
770
771 if (wb != Post)
772 address += offset;
773
774 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
775 aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u32 (cpu, address));
776
777 if (wb == Post)
778 address += offset;
779
780 if (wb != NoWriteBack)
781 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
782 }
783
784 /* 32 bit load 32 bit scaled or unscaled
785 zero- or sign-extended 32-bit register offset */
786 static void
787 ldr32_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
788 {
789 unsigned rm = INSTR (20, 16);
790 unsigned rn = INSTR (9, 5);
791 unsigned rt = INSTR (4, 0);
792 /* rn may reference SP, rm and rt must reference ZR */
793
794 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
795 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension);
796 uint64_t displacement = OPT_SCALE (extended, 32, scaling);
797
798 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
799 aarch64_set_reg_u64 (cpu, rt, NO_SP,
800 aarch64_get_mem_u32 (cpu, address + displacement));
801 }
802
803 /* 64 bit load 64 bit scaled unsigned 12 bit */
804 static void
805 ldr_abs (sim_cpu *cpu, uint32_t offset)
806 {
807 unsigned rn = INSTR (9, 5);
808 unsigned rt = INSTR (4, 0);
809
810 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
811 /* The target register may not be SP but the source may be. */
812 aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u64
813 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK)
814 + SCALE (offset, 64)));
815 }
816
817 /* 64 bit load 64 bit unscaled signed 9 bit with pre- or post-writeback. */
818 static void
819 ldr_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
820 {
821 unsigned rn = INSTR (9, 5);
822 unsigned rt = INSTR (4, 0);
823 uint64_t address;
824
825 if (rn == rt && wb != NoWriteBack)
826 HALT_UNALLOC;
827
828 address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
829
830 if (wb != Post)
831 address += offset;
832
833 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
834 aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u64 (cpu, address));
835
836 if (wb == Post)
837 address += offset;
838
839 if (wb != NoWriteBack)
840 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
841 }
842
843 /* 64 bit load 64 bit scaled or unscaled zero-
844 or sign-extended 32-bit register offset. */
845 static void
846 ldr_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
847 {
848 unsigned rm = INSTR (20, 16);
849 unsigned rn = INSTR (9, 5);
850 unsigned rt = INSTR (4, 0);
851 /* rn may reference SP, rm and rt must reference ZR */
852
853 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
854 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension);
855 uint64_t displacement = OPT_SCALE (extended, 64, scaling);
856
857 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
858 aarch64_set_reg_u64 (cpu, rt, NO_SP,
859 aarch64_get_mem_u64 (cpu, address + displacement));
860 }
861
862 /* 32 bit load zero-extended byte scaled unsigned 12 bit. */
863 static void
864 ldrb32_abs (sim_cpu *cpu, uint32_t offset)
865 {
866 unsigned rn = INSTR (9, 5);
867 unsigned rt = INSTR (4, 0);
868
869 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
870 /* The target register may not be SP but the source may be
871 there is no scaling required for a byte load. */
872 aarch64_set_reg_u64 (cpu, rt, NO_SP,
873 aarch64_get_mem_u8
874 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset));
875 }
876
877 /* 32 bit load zero-extended byte unscaled signed 9 bit with pre- or post-writeback. */
878 static void
879 ldrb32_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
880 {
881 unsigned rn = INSTR (9, 5);
882 unsigned rt = INSTR (4, 0);
883 uint64_t address;
884
885 if (rn == rt && wb != NoWriteBack)
886 HALT_UNALLOC;
887
888 address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
889
890 if (wb != Post)
891 address += offset;
892
893 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
894 aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u8 (cpu, address));
895
896 if (wb == Post)
897 address += offset;
898
899 if (wb != NoWriteBack)
900 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
901 }
902
903 /* 32 bit load zero-extended byte scaled or unscaled zero-
904 or sign-extended 32-bit register offset. */
905 static void
906 ldrb32_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
907 {
908 unsigned rm = INSTR (20, 16);
909 unsigned rn = INSTR (9, 5);
910 unsigned rt = INSTR (4, 0);
911 /* rn may reference SP, rm and rt must reference ZR */
912
913 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
914 int64_t displacement = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP),
915 extension);
916
917 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
918 /* There is no scaling required for a byte load. */
919 aarch64_set_reg_u64 (cpu, rt, NO_SP,
920 aarch64_get_mem_u8 (cpu, address + displacement));
921 }
922
923 /* 64 bit load sign-extended byte unscaled signed 9 bit
924 with pre- or post-writeback. */
925 static void
926 ldrsb_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
927 {
928 unsigned rn = INSTR (9, 5);
929 unsigned rt = INSTR (4, 0);
930 uint64_t address;
931 int64_t val;
932
933 if (rn == rt && wb != NoWriteBack)
934 HALT_UNALLOC;
935
936 address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
937
938 if (wb != Post)
939 address += offset;
940
941 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
942 val = aarch64_get_mem_s8 (cpu, address);
943 aarch64_set_reg_s64 (cpu, rt, NO_SP, val);
944
945 if (wb == Post)
946 address += offset;
947
948 if (wb != NoWriteBack)
949 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
950 }
951
952 /* 64 bit load sign-extended byte scaled unsigned 12 bit. */
953 static void
954 ldrsb_abs (sim_cpu *cpu, uint32_t offset)
955 {
956 ldrsb_wb (cpu, offset, NoWriteBack);
957 }
958
959 /* 64 bit load sign-extended byte scaled or unscaled zero-
960 or sign-extended 32-bit register offset. */
961 static void
962 ldrsb_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
963 {
964 unsigned rm = INSTR (20, 16);
965 unsigned rn = INSTR (9, 5);
966 unsigned rt = INSTR (4, 0);
967 /* rn may reference SP, rm and rt must reference ZR */
968
969 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
970 int64_t displacement = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP),
971 extension);
972 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
973 /* There is no scaling required for a byte load. */
974 aarch64_set_reg_s64 (cpu, rt, NO_SP,
975 aarch64_get_mem_s8 (cpu, address + displacement));
976 }
977
978 /* 32 bit load zero-extended short scaled unsigned 12 bit. */
979 static void
980 ldrh32_abs (sim_cpu *cpu, uint32_t offset)
981 {
982 unsigned rn = INSTR (9, 5);
983 unsigned rt = INSTR (4, 0);
984 uint32_t val;
985
986 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
987 /* The target register may not be SP but the source may be. */
988 val = aarch64_get_mem_u16 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK)
989 + SCALE (offset, 16));
990 aarch64_set_reg_u32 (cpu, rt, NO_SP, val);
991 }
992
993 /* 32 bit load zero-extended short unscaled signed 9 bit
994 with pre- or post-writeback. */
995 static void
996 ldrh32_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
997 {
998 unsigned rn = INSTR (9, 5);
999 unsigned rt = INSTR (4, 0);
1000 uint64_t address;
1001
1002 if (rn == rt && wb != NoWriteBack)
1003 HALT_UNALLOC;
1004
1005 address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1006
1007 if (wb != Post)
1008 address += offset;
1009
1010 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1011 aarch64_set_reg_u32 (cpu, rt, NO_SP, aarch64_get_mem_u16 (cpu, address));
1012
1013 if (wb == Post)
1014 address += offset;
1015
1016 if (wb != NoWriteBack)
1017 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
1018 }
1019
1020 /* 32 bit load zero-extended short scaled or unscaled zero-
1021 or sign-extended 32-bit register offset. */
1022 static void
1023 ldrh32_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
1024 {
1025 unsigned rm = INSTR (20, 16);
1026 unsigned rn = INSTR (9, 5);
1027 unsigned rt = INSTR (4, 0);
1028 /* rn may reference SP, rm and rt must reference ZR */
1029
1030 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1031 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension);
1032 uint64_t displacement = OPT_SCALE (extended, 16, scaling);
1033
1034 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1035 aarch64_set_reg_u32 (cpu, rt, NO_SP,
1036 aarch64_get_mem_u16 (cpu, address + displacement));
1037 }
1038
1039 /* 32 bit load sign-extended short scaled unsigned 12 bit. */
1040 static void
1041 ldrsh32_abs (sim_cpu *cpu, uint32_t offset)
1042 {
1043 unsigned rn = INSTR (9, 5);
1044 unsigned rt = INSTR (4, 0);
1045 int32_t val;
1046
1047 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1048 /* The target register may not be SP but the source may be. */
1049 val = aarch64_get_mem_s16 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK)
1050 + SCALE (offset, 16));
1051 aarch64_set_reg_s32 (cpu, rt, NO_SP, val);
1052 }
1053
1054 /* 32 bit load sign-extended short unscaled signed 9 bit
1055 with pre- or post-writeback. */
1056 static void
1057 ldrsh32_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
1058 {
1059 unsigned rn = INSTR (9, 5);
1060 unsigned rt = INSTR (4, 0);
1061 uint64_t address;
1062
1063 if (rn == rt && wb != NoWriteBack)
1064 HALT_UNALLOC;
1065
1066 address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1067
1068 if (wb != Post)
1069 address += offset;
1070
1071 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1072 aarch64_set_reg_s32 (cpu, rt, NO_SP,
1073 (int32_t) aarch64_get_mem_s16 (cpu, address));
1074
1075 if (wb == Post)
1076 address += offset;
1077
1078 if (wb != NoWriteBack)
1079 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
1080 }
1081
1082 /* 32 bit load sign-extended short scaled or unscaled zero-
1083 or sign-extended 32-bit register offset. */
1084 static void
1085 ldrsh32_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
1086 {
1087 unsigned rm = INSTR (20, 16);
1088 unsigned rn = INSTR (9, 5);
1089 unsigned rt = INSTR (4, 0);
1090 /* rn may reference SP, rm and rt must reference ZR */
1091
1092 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1093 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension);
1094 uint64_t displacement = OPT_SCALE (extended, 16, scaling);
1095
1096 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1097 aarch64_set_reg_s32 (cpu, rt, NO_SP,
1098 (int32_t) aarch64_get_mem_s16
1099 (cpu, address + displacement));
1100 }
1101
1102 /* 64 bit load sign-extended short scaled unsigned 12 bit. */
1103 static void
1104 ldrsh_abs (sim_cpu *cpu, uint32_t offset)
1105 {
1106 unsigned rn = INSTR (9, 5);
1107 unsigned rt = INSTR (4, 0);
1108 int64_t val;
1109
1110 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1111 /* The target register may not be SP but the source may be. */
1112 val = aarch64_get_mem_s16 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK)
1113 + SCALE (offset, 16));
1114 aarch64_set_reg_s64 (cpu, rt, NO_SP, val);
1115 }
1116
1117 /* 64 bit load sign-extended short unscaled signed 9 bit
1118 with pre- or post-writeback. */
1119 static void
1120 ldrsh64_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
1121 {
1122 unsigned rn = INSTR (9, 5);
1123 unsigned rt = INSTR (4, 0);
1124 uint64_t address;
1125 int64_t val;
1126
1127 if (rn == rt && wb != NoWriteBack)
1128 HALT_UNALLOC;
1129
1130 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1131 address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1132
1133 if (wb != Post)
1134 address += offset;
1135
1136 val = aarch64_get_mem_s16 (cpu, address);
1137 aarch64_set_reg_s64 (cpu, rt, NO_SP, val);
1138
1139 if (wb == Post)
1140 address += offset;
1141
1142 if (wb != NoWriteBack)
1143 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
1144 }
1145
1146 /* 64 bit load sign-extended short scaled or unscaled zero-
1147 or sign-extended 32-bit register offset. */
1148 static void
1149 ldrsh_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
1150 {
1151 unsigned rm = INSTR (20, 16);
1152 unsigned rn = INSTR (9, 5);
1153 unsigned rt = INSTR (4, 0);
1154
1155 /* rn may reference SP, rm and rt must reference ZR */
1156
1157 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1158 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension);
1159 uint64_t displacement = OPT_SCALE (extended, 16, scaling);
1160 int64_t val;
1161
1162 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1163 val = aarch64_get_mem_s16 (cpu, address + displacement);
1164 aarch64_set_reg_s64 (cpu, rt, NO_SP, val);
1165 }
1166
1167 /* 64 bit load sign-extended 32 bit scaled unsigned 12 bit. */
1168 static void
1169 ldrsw_abs (sim_cpu *cpu, uint32_t offset)
1170 {
1171 unsigned rn = INSTR (9, 5);
1172 unsigned rt = INSTR (4, 0);
1173 int64_t val;
1174
1175 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1176 val = aarch64_get_mem_s32 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK)
1177 + SCALE (offset, 32));
1178 /* The target register may not be SP but the source may be. */
1179 return aarch64_set_reg_s64 (cpu, rt, NO_SP, val);
1180 }
1181
1182 /* 64 bit load sign-extended 32 bit unscaled signed 9 bit
1183 with pre- or post-writeback. */
1184 static void
1185 ldrsw_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
1186 {
1187 unsigned rn = INSTR (9, 5);
1188 unsigned rt = INSTR (4, 0);
1189 uint64_t address;
1190
1191 if (rn == rt && wb != NoWriteBack)
1192 HALT_UNALLOC;
1193
1194 address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1195
1196 if (wb != Post)
1197 address += offset;
1198
1199 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1200 aarch64_set_reg_s64 (cpu, rt, NO_SP, aarch64_get_mem_s32 (cpu, address));
1201
1202 if (wb == Post)
1203 address += offset;
1204
1205 if (wb != NoWriteBack)
1206 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
1207 }
1208
1209 /* 64 bit load sign-extended 32 bit scaled or unscaled zero-
1210 or sign-extended 32-bit register offset. */
1211 static void
1212 ldrsw_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
1213 {
1214 unsigned rm = INSTR (20, 16);
1215 unsigned rn = INSTR (9, 5);
1216 unsigned rt = INSTR (4, 0);
1217 /* rn may reference SP, rm and rt must reference ZR */
1218
1219 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1220 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension);
1221 uint64_t displacement = OPT_SCALE (extended, 32, scaling);
1222
1223 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1224 aarch64_set_reg_s64 (cpu, rt, NO_SP,
1225 aarch64_get_mem_s32 (cpu, address + displacement));
1226 }
1227
1228 /* N.B. with stores the value in source is written to the
1229 address identified by source2 modified by source3/offset. */
1230
1231 /* 32 bit store scaled unsigned 12 bit. */
1232 static void
1233 str32_abs (sim_cpu *cpu, uint32_t offset)
1234 {
1235 unsigned rn = INSTR (9, 5);
1236 unsigned rt = INSTR (4, 0);
1237
1238 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1239 /* The target register may not be SP but the source may be. */
1240 aarch64_set_mem_u32 (cpu, (aarch64_get_reg_u64 (cpu, rn, SP_OK)
1241 + SCALE (offset, 32)),
1242 aarch64_get_reg_u32 (cpu, rt, NO_SP));
1243 }
1244
1245 /* 32 bit store unscaled signed 9 bit with pre- or post-writeback. */
1246 static void
1247 str32_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
1248 {
1249 unsigned rn = INSTR (9, 5);
1250 unsigned rt = INSTR (4, 0);
1251 uint64_t address;
1252
1253 if (rn == rt && wb != NoWriteBack)
1254 HALT_UNALLOC;
1255
1256 address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1257 if (wb != Post)
1258 address += offset;
1259
1260 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1261 aarch64_set_mem_u32 (cpu, address, aarch64_get_reg_u32 (cpu, rt, NO_SP));
1262
1263 if (wb == Post)
1264 address += offset;
1265
1266 if (wb != NoWriteBack)
1267 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
1268 }
1269
1270 /* 32 bit store scaled or unscaled zero- or
1271 sign-extended 32-bit register offset. */
1272 static void
1273 str32_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
1274 {
1275 unsigned rm = INSTR (20, 16);
1276 unsigned rn = INSTR (9, 5);
1277 unsigned rt = INSTR (4, 0);
1278
1279 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1280 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension);
1281 uint64_t displacement = OPT_SCALE (extended, 32, scaling);
1282
1283 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1284 aarch64_set_mem_u32 (cpu, address + displacement,
1285 aarch64_get_reg_u64 (cpu, rt, NO_SP));
1286 }
1287
1288 /* 64 bit store scaled unsigned 12 bit. */
1289 static void
1290 str_abs (sim_cpu *cpu, uint32_t offset)
1291 {
1292 unsigned rn = INSTR (9, 5);
1293 unsigned rt = INSTR (4, 0);
1294
1295 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1296 aarch64_set_mem_u64 (cpu,
1297 aarch64_get_reg_u64 (cpu, rn, SP_OK)
1298 + SCALE (offset, 64),
1299 aarch64_get_reg_u64 (cpu, rt, NO_SP));
1300 }
1301
1302 /* 64 bit store unscaled signed 9 bit with pre- or post-writeback. */
1303 static void
1304 str_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
1305 {
1306 unsigned rn = INSTR (9, 5);
1307 unsigned rt = INSTR (4, 0);
1308 uint64_t address;
1309
1310 if (rn == rt && wb != NoWriteBack)
1311 HALT_UNALLOC;
1312
1313 address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1314
1315 if (wb != Post)
1316 address += offset;
1317
1318 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1319 aarch64_set_mem_u64 (cpu, address, aarch64_get_reg_u64 (cpu, rt, NO_SP));
1320
1321 if (wb == Post)
1322 address += offset;
1323
1324 if (wb != NoWriteBack)
1325 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
1326 }
1327
1328 /* 64 bit store scaled or unscaled zero-
1329 or sign-extended 32-bit register offset. */
1330 static void
1331 str_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
1332 {
1333 unsigned rm = INSTR (20, 16);
1334 unsigned rn = INSTR (9, 5);
1335 unsigned rt = INSTR (4, 0);
1336 /* rn may reference SP, rm and rt must reference ZR */
1337
1338 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1339 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP),
1340 extension);
1341 uint64_t displacement = OPT_SCALE (extended, 64, scaling);
1342
1343 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1344 aarch64_set_mem_u64 (cpu, address + displacement,
1345 aarch64_get_reg_u64 (cpu, rt, NO_SP));
1346 }
1347
1348 /* 32 bit store byte scaled unsigned 12 bit. */
1349 static void
1350 strb_abs (sim_cpu *cpu, uint32_t offset)
1351 {
1352 unsigned rn = INSTR (9, 5);
1353 unsigned rt = INSTR (4, 0);
1354
1355 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1356 /* The target register may not be SP but the source may be.
1357 There is no scaling required for a byte load. */
1358 aarch64_set_mem_u8 (cpu,
1359 aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset,
1360 aarch64_get_reg_u8 (cpu, rt, NO_SP));
1361 }
1362
1363 /* 32 bit store byte unscaled signed 9 bit with pre- or post-writeback. */
1364 static void
1365 strb_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
1366 {
1367 unsigned rn = INSTR (9, 5);
1368 unsigned rt = INSTR (4, 0);
1369 uint64_t address;
1370
1371 if (rn == rt && wb != NoWriteBack)
1372 HALT_UNALLOC;
1373
1374 address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1375
1376 if (wb != Post)
1377 address += offset;
1378
1379 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1380 aarch64_set_mem_u8 (cpu, address, aarch64_get_reg_u8 (cpu, rt, NO_SP));
1381
1382 if (wb == Post)
1383 address += offset;
1384
1385 if (wb != NoWriteBack)
1386 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
1387 }
1388
1389 /* 32 bit store byte scaled or unscaled zero-
1390 or sign-extended 32-bit register offset. */
1391 static void
1392 strb_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
1393 {
1394 unsigned rm = INSTR (20, 16);
1395 unsigned rn = INSTR (9, 5);
1396 unsigned rt = INSTR (4, 0);
1397 /* rn may reference SP, rm and rt must reference ZR */
1398
1399 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1400 int64_t displacement = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP),
1401 extension);
1402
1403 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1404 /* There is no scaling required for a byte load. */
1405 aarch64_set_mem_u8 (cpu, address + displacement,
1406 aarch64_get_reg_u8 (cpu, rt, NO_SP));
1407 }
1408
1409 /* 32 bit store short scaled unsigned 12 bit. */
1410 static void
1411 strh_abs (sim_cpu *cpu, uint32_t offset)
1412 {
1413 unsigned rn = INSTR (9, 5);
1414 unsigned rt = INSTR (4, 0);
1415
1416 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1417 /* The target register may not be SP but the source may be. */
1418 aarch64_set_mem_u16 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK)
1419 + SCALE (offset, 16),
1420 aarch64_get_reg_u16 (cpu, rt, NO_SP));
1421 }
1422
1423 /* 32 bit store short unscaled signed 9 bit with pre- or post-writeback. */
1424 static void
1425 strh_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
1426 {
1427 unsigned rn = INSTR (9, 5);
1428 unsigned rt = INSTR (4, 0);
1429 uint64_t address;
1430
1431 if (rn == rt && wb != NoWriteBack)
1432 HALT_UNALLOC;
1433
1434 address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1435
1436 if (wb != Post)
1437 address += offset;
1438
1439 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1440 aarch64_set_mem_u16 (cpu, address, aarch64_get_reg_u16 (cpu, rt, NO_SP));
1441
1442 if (wb == Post)
1443 address += offset;
1444
1445 if (wb != NoWriteBack)
1446 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
1447 }
1448
1449 /* 32 bit store short scaled or unscaled zero-
1450 or sign-extended 32-bit register offset. */
1451 static void
1452 strh_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
1453 {
1454 unsigned rm = INSTR (20, 16);
1455 unsigned rn = INSTR (9, 5);
1456 unsigned rt = INSTR (4, 0);
1457 /* rn may reference SP, rm and rt must reference ZR */
1458
1459 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1460 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension);
1461 uint64_t displacement = OPT_SCALE (extended, 16, scaling);
1462
1463 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1464 aarch64_set_mem_u16 (cpu, address + displacement,
1465 aarch64_get_reg_u16 (cpu, rt, NO_SP));
1466 }
1467
1468 /* Prefetch unsigned 12 bit. */
1469 static void
1470 prfm_abs (sim_cpu *cpu, uint32_t offset)
1471 {
1472 /* instr[4,0] = prfop : 00000 ==> PLDL1KEEP, 00001 ==> PLDL1STRM,
1473 00010 ==> PLDL2KEEP, 00001 ==> PLDL2STRM,
1474 00100 ==> PLDL3KEEP, 00101 ==> PLDL3STRM,
1475 10000 ==> PSTL1KEEP, 10001 ==> PSTL1STRM,
1476 10010 ==> PSTL2KEEP, 10001 ==> PSTL2STRM,
1477 10100 ==> PSTL3KEEP, 10101 ==> PSTL3STRM,
1478 ow ==> UNALLOC
1479 PrfOp prfop = prfop (instr, 4, 0);
1480 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK)
1481 + SCALE (offset, 64). */
1482
1483 /* TODO : implement prefetch of address. */
1484 }
1485
1486 /* Prefetch scaled or unscaled zero- or sign-extended 32-bit register offset. */
1487 static void
1488 prfm_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
1489 {
1490 /* instr[4,0] = prfop : 00000 ==> PLDL1KEEP, 00001 ==> PLDL1STRM,
1491 00010 ==> PLDL2KEEP, 00001 ==> PLDL2STRM,
1492 00100 ==> PLDL3KEEP, 00101 ==> PLDL3STRM,
1493 10000 ==> PSTL1KEEP, 10001 ==> PSTL1STRM,
1494 10010 ==> PSTL2KEEP, 10001 ==> PSTL2STRM,
1495 10100 ==> PSTL3KEEP, 10101 ==> PSTL3STRM,
1496 ow ==> UNALLOC
1497 rn may reference SP, rm may only reference ZR
1498 PrfOp prfop = prfop (instr, 4, 0);
1499 uint64_t base = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1500 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP),
1501 extension);
1502 uint64_t displacement = OPT_SCALE (extended, 64, scaling);
1503 uint64_t address = base + displacement. */
1504
1505 /* TODO : implement prefetch of address */
1506 }
1507
1508 /* 64 bit pc-relative prefetch. */
1509 static void
1510 prfm_pcrel (sim_cpu *cpu, int32_t offset)
1511 {
1512 /* instr[4,0] = prfop : 00000 ==> PLDL1KEEP, 00001 ==> PLDL1STRM,
1513 00010 ==> PLDL2KEEP, 00001 ==> PLDL2STRM,
1514 00100 ==> PLDL3KEEP, 00101 ==> PLDL3STRM,
1515 10000 ==> PSTL1KEEP, 10001 ==> PSTL1STRM,
1516 10010 ==> PSTL2KEEP, 10001 ==> PSTL2STRM,
1517 10100 ==> PSTL3KEEP, 10101 ==> PSTL3STRM,
1518 ow ==> UNALLOC
1519 PrfOp prfop = prfop (instr, 4, 0);
1520 uint64_t address = aarch64_get_PC (cpu) + offset. */
1521
1522 /* TODO : implement this */
1523 }
1524
1525 /* Load-store exclusive. */
1526
1527 static void
1528 ldxr (sim_cpu *cpu)
1529 {
1530 unsigned rn = INSTR (9, 5);
1531 unsigned rt = INSTR (4, 0);
1532 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1533 int size = INSTR (31, 30);
1534 /* int ordered = INSTR (15, 15); */
1535 /* int exclusive = ! INSTR (23, 23); */
1536
1537 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1538 switch (size)
1539 {
1540 case 0:
1541 aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u8 (cpu, address));
1542 break;
1543 case 1:
1544 aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u16 (cpu, address));
1545 break;
1546 case 2:
1547 aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u32 (cpu, address));
1548 break;
1549 case 3:
1550 aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u64 (cpu, address));
1551 break;
1552 }
1553 }
1554
1555 static void
1556 stxr (sim_cpu *cpu)
1557 {
1558 unsigned rn = INSTR (9, 5);
1559 unsigned rt = INSTR (4, 0);
1560 unsigned rs = INSTR (20, 16);
1561 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1562 int size = INSTR (31, 30);
1563 uint64_t data = aarch64_get_reg_u64 (cpu, rt, NO_SP);
1564
1565 switch (size)
1566 {
1567 case 0: aarch64_set_mem_u8 (cpu, address, data); break;
1568 case 1: aarch64_set_mem_u16 (cpu, address, data); break;
1569 case 2: aarch64_set_mem_u32 (cpu, address, data); break;
1570 case 3: aarch64_set_mem_u64 (cpu, address, data); break;
1571 }
1572
1573 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1574 aarch64_set_reg_u64 (cpu, rs, NO_SP, 0); /* Always exclusive... */
1575 }
1576
1577 static void
1578 dexLoadLiteral (sim_cpu *cpu)
1579 {
1580 /* instr[29,27] == 011
1581 instr[25,24] == 00
1582 instr[31,30:26] = opc: 000 ==> LDRW, 001 ==> FLDRS
1583 010 ==> LDRX, 011 ==> FLDRD
1584 100 ==> LDRSW, 101 ==> FLDRQ
1585 110 ==> PRFM, 111 ==> UNALLOC
1586 instr[26] ==> V : 0 ==> GReg, 1 ==> FReg
1587 instr[23, 5] == simm19 */
1588
1589 /* unsigned rt = INSTR (4, 0); */
1590 uint32_t dispatch = (INSTR (31, 30) << 1) | INSTR (26, 26);
1591 int32_t imm = simm32 (aarch64_get_instr (cpu), 23, 5);
1592
1593 switch (dispatch)
1594 {
1595 case 0: ldr32_pcrel (cpu, imm); break;
1596 case 1: fldrs_pcrel (cpu, imm); break;
1597 case 2: ldr_pcrel (cpu, imm); break;
1598 case 3: fldrd_pcrel (cpu, imm); break;
1599 case 4: ldrsw_pcrel (cpu, imm); break;
1600 case 5: fldrq_pcrel (cpu, imm); break;
1601 case 6: prfm_pcrel (cpu, imm); break;
1602 case 7:
1603 default:
1604 HALT_UNALLOC;
1605 }
1606 }
1607
1608 /* Immediate arithmetic
1609 The aimm argument is a 12 bit unsigned value or a 12 bit unsigned
1610 value left shifted by 12 bits (done at decode).
1611
1612 N.B. the register args (dest, source) can normally be Xn or SP.
1613 the exception occurs for flag setting instructions which may
1614 only use Xn for the output (dest). */
1615
1616 /* 32 bit add immediate. */
1617 static void
1618 add32 (sim_cpu *cpu, uint32_t aimm)
1619 {
1620 unsigned rn = INSTR (9, 5);
1621 unsigned rd = INSTR (4, 0);
1622
1623 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1624 aarch64_set_reg_u64 (cpu, rd, SP_OK,
1625 aarch64_get_reg_u32 (cpu, rn, SP_OK) + aimm);
1626 }
1627
1628 /* 64 bit add immediate. */
1629 static void
1630 add64 (sim_cpu *cpu, uint32_t aimm)
1631 {
1632 unsigned rn = INSTR (9, 5);
1633 unsigned rd = INSTR (4, 0);
1634
1635 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1636 aarch64_set_reg_u64 (cpu, rd, SP_OK,
1637 aarch64_get_reg_u64 (cpu, rn, SP_OK) + aimm);
1638 }
1639
1640 static void
1641 set_flags_for_add32 (sim_cpu *cpu, int32_t value1, int32_t value2)
1642 {
1643 int32_t result = value1 + value2;
1644 int64_t sresult = (int64_t) value1 + (int64_t) value2;
1645 uint64_t uresult = (uint64_t)(uint32_t) value1
1646 + (uint64_t)(uint32_t) value2;
1647 uint32_t flags = 0;
1648
1649 if (result == 0)
1650 flags |= Z;
1651
1652 if (result & (1 << 31))
1653 flags |= N;
1654
1655 if (uresult != result)
1656 flags |= C;
1657
1658 if (sresult != result)
1659 flags |= V;
1660
1661 aarch64_set_CPSR (cpu, flags);
1662 }
1663
1664 static void
1665 set_flags_for_add64 (sim_cpu *cpu, uint64_t value1, uint64_t value2)
1666 {
1667 int64_t sval1 = value1;
1668 int64_t sval2 = value2;
1669 uint64_t result = value1 + value2;
1670 int64_t sresult = sval1 + sval2;
1671 uint32_t flags = 0;
1672
1673 if (result == 0)
1674 flags |= Z;
1675
1676 if (result & (1ULL << 63))
1677 flags |= N;
1678
1679 if (sval1 < 0)
1680 {
1681 if (sval2 < 0)
1682 {
1683 /* Negative plus a negative. Overflow happens if
1684 the result is greater than either of the operands. */
1685 if (sresult > sval1 || sresult > sval2)
1686 flags |= V;
1687 }
1688 /* else Negative plus a positive. Overflow cannot happen. */
1689 }
1690 else /* value1 is +ve. */
1691 {
1692 if (sval2 < 0)
1693 {
1694 /* Overflow can only occur if we computed "0 - MININT". */
1695 if (sval1 == 0 && sval2 == (1LL << 63))
1696 flags |= V;
1697 }
1698 else
1699 {
1700 /* Postive plus positive - overflow has happened if the
1701 result is smaller than either of the operands. */
1702 if (result < value1 || result < value2)
1703 flags |= V | C;
1704 }
1705 }
1706
1707 aarch64_set_CPSR (cpu, flags);
1708 }
1709
1710 #define NEG(a) (((a) & signbit) == signbit)
1711 #define POS(a) (((a) & signbit) == 0)
1712
1713 static void
1714 set_flags_for_sub32 (sim_cpu *cpu, uint32_t value1, uint32_t value2)
1715 {
1716 uint32_t result = value1 - value2;
1717 uint32_t flags = 0;
1718 uint32_t signbit = 1U << 31;
1719
1720 if (result == 0)
1721 flags |= Z;
1722
1723 if (NEG (result))
1724 flags |= N;
1725
1726 if ( (NEG (value1) && POS (value2))
1727 || (NEG (value1) && POS (result))
1728 || (POS (value2) && POS (result)))
1729 flags |= C;
1730
1731 if ( (NEG (value1) && POS (value2) && POS (result))
1732 || (POS (value1) && NEG (value2) && NEG (result)))
1733 flags |= V;
1734
1735 aarch64_set_CPSR (cpu, flags);
1736 }
1737
1738 static void
1739 set_flags_for_sub64 (sim_cpu *cpu, uint64_t value1, uint64_t value2)
1740 {
1741 uint64_t result = value1 - value2;
1742 uint32_t flags = 0;
1743 uint64_t signbit = 1ULL << 63;
1744
1745 if (result == 0)
1746 flags |= Z;
1747
1748 if (NEG (result))
1749 flags |= N;
1750
1751 if ( (NEG (value1) && POS (value2))
1752 || (NEG (value1) && POS (result))
1753 || (POS (value2) && POS (result)))
1754 flags |= C;
1755
1756 if ( (NEG (value1) && POS (value2) && POS (result))
1757 || (POS (value1) && NEG (value2) && NEG (result)))
1758 flags |= V;
1759
1760 aarch64_set_CPSR (cpu, flags);
1761 }
1762
1763 static void
1764 set_flags_for_binop32 (sim_cpu *cpu, uint32_t result)
1765 {
1766 uint32_t flags = 0;
1767
1768 if (result == 0)
1769 flags |= Z;
1770 else
1771 flags &= ~ Z;
1772
1773 if (result & (1 << 31))
1774 flags |= N;
1775 else
1776 flags &= ~ N;
1777
1778 aarch64_set_CPSR (cpu, flags);
1779 }
1780
1781 static void
1782 set_flags_for_binop64 (sim_cpu *cpu, uint64_t result)
1783 {
1784 uint32_t flags = 0;
1785
1786 if (result == 0)
1787 flags |= Z;
1788 else
1789 flags &= ~ Z;
1790
1791 if (result & (1ULL << 63))
1792 flags |= N;
1793 else
1794 flags &= ~ N;
1795
1796 aarch64_set_CPSR (cpu, flags);
1797 }
1798
1799 /* 32 bit add immediate set flags. */
1800 static void
1801 adds32 (sim_cpu *cpu, uint32_t aimm)
1802 {
1803 unsigned rn = INSTR (9, 5);
1804 unsigned rd = INSTR (4, 0);
1805 /* TODO : do we need to worry about signs here? */
1806 int32_t value1 = aarch64_get_reg_s32 (cpu, rn, SP_OK);
1807
1808 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1809 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 + aimm);
1810 set_flags_for_add32 (cpu, value1, aimm);
1811 }
1812
1813 /* 64 bit add immediate set flags. */
1814 static void
1815 adds64 (sim_cpu *cpu, uint32_t aimm)
1816 {
1817 unsigned rn = INSTR (9, 5);
1818 unsigned rd = INSTR (4, 0);
1819 uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1820 uint64_t value2 = aimm;
1821
1822 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1823 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 + value2);
1824 set_flags_for_add64 (cpu, value1, value2);
1825 }
1826
1827 /* 32 bit sub immediate. */
1828 static void
1829 sub32 (sim_cpu *cpu, uint32_t aimm)
1830 {
1831 unsigned rn = INSTR (9, 5);
1832 unsigned rd = INSTR (4, 0);
1833
1834 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1835 aarch64_set_reg_u64 (cpu, rd, SP_OK,
1836 aarch64_get_reg_u32 (cpu, rn, SP_OK) - aimm);
1837 }
1838
1839 /* 64 bit sub immediate. */
1840 static void
1841 sub64 (sim_cpu *cpu, uint32_t aimm)
1842 {
1843 unsigned rn = INSTR (9, 5);
1844 unsigned rd = INSTR (4, 0);
1845
1846 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1847 aarch64_set_reg_u64 (cpu, rd, SP_OK,
1848 aarch64_get_reg_u64 (cpu, rn, SP_OK) - aimm);
1849 }
1850
1851 /* 32 bit sub immediate set flags. */
1852 static void
1853 subs32 (sim_cpu *cpu, uint32_t aimm)
1854 {
1855 unsigned rn = INSTR (9, 5);
1856 unsigned rd = INSTR (4, 0);
1857 uint32_t value1 = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1858 uint32_t value2 = aimm;
1859
1860 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1861 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 - value2);
1862 set_flags_for_sub32 (cpu, value1, value2);
1863 }
1864
1865 /* 64 bit sub immediate set flags. */
1866 static void
1867 subs64 (sim_cpu *cpu, uint32_t aimm)
1868 {
1869 unsigned rn = INSTR (9, 5);
1870 unsigned rd = INSTR (4, 0);
1871 uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, SP_OK);
1872 uint32_t value2 = aimm;
1873
1874 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1875 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 - value2);
1876 set_flags_for_sub64 (cpu, value1, value2);
1877 }
1878
1879 /* Data Processing Register. */
1880
1881 /* First two helpers to perform the shift operations. */
1882
1883 static inline uint32_t
1884 shifted32 (uint32_t value, Shift shift, uint32_t count)
1885 {
1886 switch (shift)
1887 {
1888 default:
1889 case LSL:
1890 return (value << count);
1891 case LSR:
1892 return (value >> count);
1893 case ASR:
1894 {
1895 int32_t svalue = value;
1896 return (svalue >> count);
1897 }
1898 case ROR:
1899 {
1900 uint32_t top = value >> count;
1901 uint32_t bottom = value << (32 - count);
1902 return (bottom | top);
1903 }
1904 }
1905 }
1906
1907 static inline uint64_t
1908 shifted64 (uint64_t value, Shift shift, uint32_t count)
1909 {
1910 switch (shift)
1911 {
1912 default:
1913 case LSL:
1914 return (value << count);
1915 case LSR:
1916 return (value >> count);
1917 case ASR:
1918 {
1919 int64_t svalue = value;
1920 return (svalue >> count);
1921 }
1922 case ROR:
1923 {
1924 uint64_t top = value >> count;
1925 uint64_t bottom = value << (64 - count);
1926 return (bottom | top);
1927 }
1928 }
1929 }
1930
1931 /* Arithmetic shifted register.
1932 These allow an optional LSL, ASR or LSR to the second source
1933 register with a count up to the register bit count.
1934
1935 N.B register args may not be SP. */
1936
1937 /* 32 bit ADD shifted register. */
1938 static void
1939 add32_shift (sim_cpu *cpu, Shift shift, uint32_t count)
1940 {
1941 unsigned rm = INSTR (20, 16);
1942 unsigned rn = INSTR (9, 5);
1943 unsigned rd = INSTR (4, 0);
1944
1945 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1946 aarch64_set_reg_u64 (cpu, rd, NO_SP,
1947 aarch64_get_reg_u32 (cpu, rn, NO_SP)
1948 + shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP),
1949 shift, count));
1950 }
1951
1952 /* 64 bit ADD shifted register. */
1953 static void
1954 add64_shift (sim_cpu *cpu, Shift shift, uint32_t count)
1955 {
1956 unsigned rm = INSTR (20, 16);
1957 unsigned rn = INSTR (9, 5);
1958 unsigned rd = INSTR (4, 0);
1959
1960 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1961 aarch64_set_reg_u64 (cpu, rd, NO_SP,
1962 aarch64_get_reg_u64 (cpu, rn, NO_SP)
1963 + shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP),
1964 shift, count));
1965 }
1966
1967 /* 32 bit ADD shifted register setting flags. */
1968 static void
1969 adds32_shift (sim_cpu *cpu, Shift shift, uint32_t count)
1970 {
1971 unsigned rm = INSTR (20, 16);
1972 unsigned rn = INSTR (9, 5);
1973 unsigned rd = INSTR (4, 0);
1974
1975 uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, NO_SP);
1976 uint32_t value2 = shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP),
1977 shift, count);
1978
1979 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1980 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 + value2);
1981 set_flags_for_add32 (cpu, value1, value2);
1982 }
1983
1984 /* 64 bit ADD shifted register setting flags. */
1985 static void
1986 adds64_shift (sim_cpu *cpu, Shift shift, uint32_t count)
1987 {
1988 unsigned rm = INSTR (20, 16);
1989 unsigned rn = INSTR (9, 5);
1990 unsigned rd = INSTR (4, 0);
1991
1992 uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, NO_SP);
1993 uint64_t value2 = shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP),
1994 shift, count);
1995
1996 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
1997 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 + value2);
1998 set_flags_for_add64 (cpu, value1, value2);
1999 }
2000
2001 /* 32 bit SUB shifted register. */
2002 static void
2003 sub32_shift (sim_cpu *cpu, Shift shift, uint32_t count)
2004 {
2005 unsigned rm = INSTR (20, 16);
2006 unsigned rn = INSTR (9, 5);
2007 unsigned rd = INSTR (4, 0);
2008
2009 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2010 aarch64_set_reg_u64 (cpu, rd, NO_SP,
2011 aarch64_get_reg_u32 (cpu, rn, NO_SP)
2012 - shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP),
2013 shift, count));
2014 }
2015
2016 /* 64 bit SUB shifted register. */
2017 static void
2018 sub64_shift (sim_cpu *cpu, Shift shift, uint32_t count)
2019 {
2020 unsigned rm = INSTR (20, 16);
2021 unsigned rn = INSTR (9, 5);
2022 unsigned rd = INSTR (4, 0);
2023
2024 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2025 aarch64_set_reg_u64 (cpu, rd, NO_SP,
2026 aarch64_get_reg_u64 (cpu, rn, NO_SP)
2027 - shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP),
2028 shift, count));
2029 }
2030
2031 /* 32 bit SUB shifted register setting flags. */
2032 static void
2033 subs32_shift (sim_cpu *cpu, Shift shift, uint32_t count)
2034 {
2035 unsigned rm = INSTR (20, 16);
2036 unsigned rn = INSTR (9, 5);
2037 unsigned rd = INSTR (4, 0);
2038
2039 uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, NO_SP);
2040 uint32_t value2 = shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP),
2041 shift, count);
2042
2043 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2044 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 - value2);
2045 set_flags_for_sub32 (cpu, value1, value2);
2046 }
2047
2048 /* 64 bit SUB shifted register setting flags. */
2049 static void
2050 subs64_shift (sim_cpu *cpu, Shift shift, uint32_t count)
2051 {
2052 unsigned rm = INSTR (20, 16);
2053 unsigned rn = INSTR (9, 5);
2054 unsigned rd = INSTR (4, 0);
2055
2056 uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, NO_SP);
2057 uint64_t value2 = shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP),
2058 shift, count);
2059
2060 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2061 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 - value2);
2062 set_flags_for_sub64 (cpu, value1, value2);
2063 }
2064
2065 /* First a couple more helpers to fetch the
2066 relevant source register element either
2067 sign or zero extended as required by the
2068 extension value. */
2069
2070 static uint32_t
2071 extreg32 (sim_cpu *cpu, unsigned int lo, Extension extension)
2072 {
2073 switch (extension)
2074 {
2075 case UXTB: return aarch64_get_reg_u8 (cpu, lo, NO_SP);
2076 case UXTH: return aarch64_get_reg_u16 (cpu, lo, NO_SP);
2077 case UXTW: /* Fall through. */
2078 case UXTX: return aarch64_get_reg_u32 (cpu, lo, NO_SP);
2079 case SXTB: return aarch64_get_reg_s8 (cpu, lo, NO_SP);
2080 case SXTH: return aarch64_get_reg_s16 (cpu, lo, NO_SP);
2081 case SXTW: /* Fall through. */
2082 case SXTX: /* Fall through. */
2083 default: return aarch64_get_reg_s32 (cpu, lo, NO_SP);
2084 }
2085 }
2086
2087 static uint64_t
2088 extreg64 (sim_cpu *cpu, unsigned int lo, Extension extension)
2089 {
2090 switch (extension)
2091 {
2092 case UXTB: return aarch64_get_reg_u8 (cpu, lo, NO_SP);
2093 case UXTH: return aarch64_get_reg_u16 (cpu, lo, NO_SP);
2094 case UXTW: return aarch64_get_reg_u32 (cpu, lo, NO_SP);
2095 case UXTX: return aarch64_get_reg_u64 (cpu, lo, NO_SP);
2096 case SXTB: return aarch64_get_reg_s8 (cpu, lo, NO_SP);
2097 case SXTH: return aarch64_get_reg_s16 (cpu, lo, NO_SP);
2098 case SXTW: return aarch64_get_reg_s32 (cpu, lo, NO_SP);
2099 case SXTX:
2100 default: return aarch64_get_reg_s64 (cpu, lo, NO_SP);
2101 }
2102 }
2103
2104 /* Arithmetic extending register
2105 These allow an optional sign extension of some portion of the
2106 second source register followed by an optional left shift of
2107 between 1 and 4 bits (i.e. a shift of 0-4 bits???)
2108
2109 N.B output (dest) and first input arg (source) may normally be Xn
2110 or SP. However, for flag setting operations dest can only be
2111 Xn. Second input registers are always Xn. */
2112
2113 /* 32 bit ADD extending register. */
2114 static void
2115 add32_ext (sim_cpu *cpu, Extension extension, uint32_t shift)
2116 {
2117 unsigned rm = INSTR (20, 16);
2118 unsigned rn = INSTR (9, 5);
2119 unsigned rd = INSTR (4, 0);
2120
2121 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2122 aarch64_set_reg_u64 (cpu, rd, SP_OK,
2123 aarch64_get_reg_u32 (cpu, rn, SP_OK)
2124 + (extreg32 (cpu, rm, extension) << shift));
2125 }
2126
2127 /* 64 bit ADD extending register.
2128 N.B. This subsumes the case with 64 bit source2 and UXTX #n or LSL #0. */
2129 static void
2130 add64_ext (sim_cpu *cpu, Extension extension, uint32_t shift)
2131 {
2132 unsigned rm = INSTR (20, 16);
2133 unsigned rn = INSTR (9, 5);
2134 unsigned rd = INSTR (4, 0);
2135
2136 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2137 aarch64_set_reg_u64 (cpu, rd, SP_OK,
2138 aarch64_get_reg_u64 (cpu, rn, SP_OK)
2139 + (extreg64 (cpu, rm, extension) << shift));
2140 }
2141
2142 /* 32 bit ADD extending register setting flags. */
2143 static void
2144 adds32_ext (sim_cpu *cpu, Extension extension, uint32_t shift)
2145 {
2146 unsigned rm = INSTR (20, 16);
2147 unsigned rn = INSTR (9, 5);
2148 unsigned rd = INSTR (4, 0);
2149
2150 uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, SP_OK);
2151 uint32_t value2 = extreg32 (cpu, rm, extension) << shift;
2152
2153 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2154 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 + value2);
2155 set_flags_for_add32 (cpu, value1, value2);
2156 }
2157
2158 /* 64 bit ADD extending register setting flags */
2159 /* N.B. this subsumes the case with 64 bit source2 and UXTX #n or LSL #0 */
2160 static void
2161 adds64_ext (sim_cpu *cpu, Extension extension, uint32_t shift)
2162 {
2163 unsigned rm = INSTR (20, 16);
2164 unsigned rn = INSTR (9, 5);
2165 unsigned rd = INSTR (4, 0);
2166
2167 uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, SP_OK);
2168 uint64_t value2 = extreg64 (cpu, rm, extension) << shift;
2169
2170 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2171 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 + value2);
2172 set_flags_for_add64 (cpu, value1, value2);
2173 }
2174
2175 /* 32 bit SUB extending register. */
2176 static void
2177 sub32_ext (sim_cpu *cpu, Extension extension, uint32_t shift)
2178 {
2179 unsigned rm = INSTR (20, 16);
2180 unsigned rn = INSTR (9, 5);
2181 unsigned rd = INSTR (4, 0);
2182
2183 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2184 aarch64_set_reg_u64 (cpu, rd, SP_OK,
2185 aarch64_get_reg_u32 (cpu, rn, SP_OK)
2186 - (extreg32 (cpu, rm, extension) << shift));
2187 }
2188
2189 /* 64 bit SUB extending register. */
2190 /* N.B. this subsumes the case with 64 bit source2 and UXTX #n or LSL #0. */
2191 static void
2192 sub64_ext (sim_cpu *cpu, Extension extension, uint32_t shift)
2193 {
2194 unsigned rm = INSTR (20, 16);
2195 unsigned rn = INSTR (9, 5);
2196 unsigned rd = INSTR (4, 0);
2197
2198 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2199 aarch64_set_reg_u64 (cpu, rd, SP_OK,
2200 aarch64_get_reg_u64 (cpu, rn, SP_OK)
2201 - (extreg64 (cpu, rm, extension) << shift));
2202 }
2203
2204 /* 32 bit SUB extending register setting flags. */
2205 static void
2206 subs32_ext (sim_cpu *cpu, Extension extension, uint32_t shift)
2207 {
2208 unsigned rm = INSTR (20, 16);
2209 unsigned rn = INSTR (9, 5);
2210 unsigned rd = INSTR (4, 0);
2211
2212 uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, SP_OK);
2213 uint32_t value2 = extreg32 (cpu, rm, extension) << shift;
2214
2215 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2216 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 - value2);
2217 set_flags_for_sub32 (cpu, value1, value2);
2218 }
2219
2220 /* 64 bit SUB extending register setting flags */
2221 /* N.B. this subsumes the case with 64 bit source2 and UXTX #n or LSL #0 */
2222 static void
2223 subs64_ext (sim_cpu *cpu, Extension extension, uint32_t shift)
2224 {
2225 unsigned rm = INSTR (20, 16);
2226 unsigned rn = INSTR (9, 5);
2227 unsigned rd = INSTR (4, 0);
2228
2229 uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, SP_OK);
2230 uint64_t value2 = extreg64 (cpu, rm, extension) << shift;
2231
2232 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2233 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 - value2);
2234 set_flags_for_sub64 (cpu, value1, value2);
2235 }
2236
2237 static void
2238 dexAddSubtractImmediate (sim_cpu *cpu)
2239 {
2240 /* instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit
2241 instr[30] = op : 0 ==> ADD, 1 ==> SUB
2242 instr[29] = set : 0 ==> no flags, 1 ==> set flags
2243 instr[28,24] = 10001
2244 instr[23,22] = shift : 00 == LSL#0, 01 = LSL#12 1x = UNALLOC
2245 instr[21,10] = uimm12
2246 instr[9,5] = Rn
2247 instr[4,0] = Rd */
2248
2249 /* N.B. the shift is applied at decode before calling the add/sub routine. */
2250 uint32_t shift = INSTR (23, 22);
2251 uint32_t imm = INSTR (21, 10);
2252 uint32_t dispatch = INSTR (31, 29);
2253
2254 NYI_assert (28, 24, 0x11);
2255
2256 if (shift > 1)
2257 HALT_UNALLOC;
2258
2259 if (shift)
2260 imm <<= 12;
2261
2262 switch (dispatch)
2263 {
2264 case 0: add32 (cpu, imm); break;
2265 case 1: adds32 (cpu, imm); break;
2266 case 2: sub32 (cpu, imm); break;
2267 case 3: subs32 (cpu, imm); break;
2268 case 4: add64 (cpu, imm); break;
2269 case 5: adds64 (cpu, imm); break;
2270 case 6: sub64 (cpu, imm); break;
2271 case 7: subs64 (cpu, imm); break;
2272 }
2273 }
2274
2275 static void
2276 dexAddSubtractShiftedRegister (sim_cpu *cpu)
2277 {
2278 /* instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit
2279 instr[30,29] = op : 00 ==> ADD, 01 ==> ADDS, 10 ==> SUB, 11 ==> SUBS
2280 instr[28,24] = 01011
2281 instr[23,22] = shift : 0 ==> LSL, 1 ==> LSR, 2 ==> ASR, 3 ==> UNALLOC
2282 instr[21] = 0
2283 instr[20,16] = Rm
2284 instr[15,10] = count : must be 0xxxxx for 32 bit
2285 instr[9,5] = Rn
2286 instr[4,0] = Rd */
2287
2288 uint32_t size = INSTR (31, 31);
2289 uint32_t count = INSTR (15, 10);
2290 Shift shiftType = INSTR (23, 22);
2291
2292 NYI_assert (28, 24, 0x0B);
2293 NYI_assert (21, 21, 0);
2294
2295 /* Shift encoded as ROR is unallocated. */
2296 if (shiftType == ROR)
2297 HALT_UNALLOC;
2298
2299 /* 32 bit operations must have count[5] = 0
2300 or else we have an UNALLOC. */
2301 if (size == 0 && uimm (count, 5, 5))
2302 HALT_UNALLOC;
2303
2304 /* Dispatch on size:op i.e instr [31,29]. */
2305 switch (INSTR (31, 29))
2306 {
2307 case 0: add32_shift (cpu, shiftType, count); break;
2308 case 1: adds32_shift (cpu, shiftType, count); break;
2309 case 2: sub32_shift (cpu, shiftType, count); break;
2310 case 3: subs32_shift (cpu, shiftType, count); break;
2311 case 4: add64_shift (cpu, shiftType, count); break;
2312 case 5: adds64_shift (cpu, shiftType, count); break;
2313 case 6: sub64_shift (cpu, shiftType, count); break;
2314 case 7: subs64_shift (cpu, shiftType, count); break;
2315 }
2316 }
2317
2318 static void
2319 dexAddSubtractExtendedRegister (sim_cpu *cpu)
2320 {
2321 /* instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit
2322 instr[30] = op : 0 ==> ADD, 1 ==> SUB
2323 instr[29] = set? : 0 ==> no flags, 1 ==> set flags
2324 instr[28,24] = 01011
2325 instr[23,22] = opt : 0 ==> ok, 1,2,3 ==> UNALLOC
2326 instr[21] = 1
2327 instr[20,16] = Rm
2328 instr[15,13] = option : 000 ==> UXTB, 001 ==> UXTH,
2329 000 ==> LSL|UXTW, 001 ==> UXTZ,
2330 000 ==> SXTB, 001 ==> SXTH,
2331 000 ==> SXTW, 001 ==> SXTX,
2332 instr[12,10] = shift : 0,1,2,3,4 ==> ok, 5,6,7 ==> UNALLOC
2333 instr[9,5] = Rn
2334 instr[4,0] = Rd */
2335
2336 Extension extensionType = INSTR (15, 13);
2337 uint32_t shift = INSTR (12, 10);
2338
2339 NYI_assert (28, 24, 0x0B);
2340 NYI_assert (21, 21, 1);
2341
2342 /* Shift may not exceed 4. */
2343 if (shift > 4)
2344 HALT_UNALLOC;
2345
2346 /* Dispatch on size:op:set?. */
2347 switch (INSTR (31, 29))
2348 {
2349 case 0: add32_ext (cpu, extensionType, shift); break;
2350 case 1: adds32_ext (cpu, extensionType, shift); break;
2351 case 2: sub32_ext (cpu, extensionType, shift); break;
2352 case 3: subs32_ext (cpu, extensionType, shift); break;
2353 case 4: add64_ext (cpu, extensionType, shift); break;
2354 case 5: adds64_ext (cpu, extensionType, shift); break;
2355 case 6: sub64_ext (cpu, extensionType, shift); break;
2356 case 7: subs64_ext (cpu, extensionType, shift); break;
2357 }
2358 }
2359
2360 /* Conditional data processing
2361 Condition register is implicit 3rd source. */
2362
2363 /* 32 bit add with carry. */
2364 /* N.B register args may not be SP. */
2365
2366 static void
2367 adc32 (sim_cpu *cpu)
2368 {
2369 unsigned rm = INSTR (20, 16);
2370 unsigned rn = INSTR (9, 5);
2371 unsigned rd = INSTR (4, 0);
2372
2373 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2374 aarch64_set_reg_u64 (cpu, rd, NO_SP,
2375 aarch64_get_reg_u32 (cpu, rn, NO_SP)
2376 + aarch64_get_reg_u32 (cpu, rm, NO_SP)
2377 + IS_SET (C));
2378 }
2379
2380 /* 64 bit add with carry */
2381 static void
2382 adc64 (sim_cpu *cpu)
2383 {
2384 unsigned rm = INSTR (20, 16);
2385 unsigned rn = INSTR (9, 5);
2386 unsigned rd = INSTR (4, 0);
2387
2388 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2389 aarch64_set_reg_u64 (cpu, rd, NO_SP,
2390 aarch64_get_reg_u64 (cpu, rn, NO_SP)
2391 + aarch64_get_reg_u64 (cpu, rm, NO_SP)
2392 + IS_SET (C));
2393 }
2394
2395 /* 32 bit add with carry setting flags. */
2396 static void
2397 adcs32 (sim_cpu *cpu)
2398 {
2399 unsigned rm = INSTR (20, 16);
2400 unsigned rn = INSTR (9, 5);
2401 unsigned rd = INSTR (4, 0);
2402
2403 uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, NO_SP);
2404 uint32_t value2 = aarch64_get_reg_u32 (cpu, rm, NO_SP);
2405 uint32_t carry = IS_SET (C);
2406
2407 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2408 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 + value2 + carry);
2409 set_flags_for_add32 (cpu, value1, value2 + carry);
2410 }
2411
2412 /* 64 bit add with carry setting flags. */
2413 static void
2414 adcs64 (sim_cpu *cpu)
2415 {
2416 unsigned rm = INSTR (20, 16);
2417 unsigned rn = INSTR (9, 5);
2418 unsigned rd = INSTR (4, 0);
2419
2420 uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, NO_SP);
2421 uint64_t value2 = aarch64_get_reg_u64 (cpu, rm, NO_SP);
2422 uint64_t carry = IS_SET (C);
2423
2424 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2425 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 + value2 + carry);
2426 set_flags_for_add64 (cpu, value1, value2 + carry);
2427 }
2428
2429 /* 32 bit sub with carry. */
2430 static void
2431 sbc32 (sim_cpu *cpu)
2432 {
2433 unsigned rm = INSTR (20, 16);
2434 unsigned rn = INSTR (9, 5); /* ngc iff rn == 31. */
2435 unsigned rd = INSTR (4, 0);
2436
2437 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2438 aarch64_set_reg_u64 (cpu, rd, NO_SP,
2439 aarch64_get_reg_u32 (cpu, rn, NO_SP)
2440 - aarch64_get_reg_u32 (cpu, rm, NO_SP)
2441 - 1 + IS_SET (C));
2442 }
2443
2444 /* 64 bit sub with carry */
2445 static void
2446 sbc64 (sim_cpu *cpu)
2447 {
2448 unsigned rm = INSTR (20, 16);
2449 unsigned rn = INSTR (9, 5);
2450 unsigned rd = INSTR (4, 0);
2451
2452 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2453 aarch64_set_reg_u64 (cpu, rd, NO_SP,
2454 aarch64_get_reg_u64 (cpu, rn, NO_SP)
2455 - aarch64_get_reg_u64 (cpu, rm, NO_SP)
2456 - 1 + IS_SET (C));
2457 }
2458
2459 /* 32 bit sub with carry setting flags */
2460 static void
2461 sbcs32 (sim_cpu *cpu)
2462 {
2463 unsigned rm = INSTR (20, 16);
2464 unsigned rn = INSTR (9, 5);
2465 unsigned rd = INSTR (4, 0);
2466
2467 uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, NO_SP);
2468 uint32_t value2 = aarch64_get_reg_u32 (cpu, rm, NO_SP);
2469 uint32_t carry = IS_SET (C);
2470 uint32_t result = value1 - value2 + 1 - carry;
2471
2472 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2473 aarch64_set_reg_u64 (cpu, rd, NO_SP, result);
2474 set_flags_for_sub32 (cpu, value1, value2 + 1 - carry);
2475 }
2476
2477 /* 64 bit sub with carry setting flags */
2478 static void
2479 sbcs64 (sim_cpu *cpu)
2480 {
2481 unsigned rm = INSTR (20, 16);
2482 unsigned rn = INSTR (9, 5);
2483 unsigned rd = INSTR (4, 0);
2484
2485 uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, NO_SP);
2486 uint64_t value2 = aarch64_get_reg_u64 (cpu, rm, NO_SP);
2487 uint64_t carry = IS_SET (C);
2488 uint64_t result = value1 - value2 + 1 - carry;
2489
2490 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2491 aarch64_set_reg_u64 (cpu, rd, NO_SP, result);
2492 set_flags_for_sub64 (cpu, value1, value2 + 1 - carry);
2493 }
2494
2495 static void
2496 dexAddSubtractWithCarry (sim_cpu *cpu)
2497 {
2498 /* instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit
2499 instr[30] = op : 0 ==> ADC, 1 ==> SBC
2500 instr[29] = set? : 0 ==> no flags, 1 ==> set flags
2501 instr[28,21] = 1 1010 000
2502 instr[20,16] = Rm
2503 instr[15,10] = op2 : 00000 ==> ok, ow ==> UNALLOC
2504 instr[9,5] = Rn
2505 instr[4,0] = Rd */
2506
2507 uint32_t op2 = INSTR (15, 10);
2508
2509 NYI_assert (28, 21, 0xD0);
2510
2511 if (op2 != 0)
2512 HALT_UNALLOC;
2513
2514 /* Dispatch on size:op:set?. */
2515 switch (INSTR (31, 29))
2516 {
2517 case 0: adc32 (cpu); break;
2518 case 1: adcs32 (cpu); break;
2519 case 2: sbc32 (cpu); break;
2520 case 3: sbcs32 (cpu); break;
2521 case 4: adc64 (cpu); break;
2522 case 5: adcs64 (cpu); break;
2523 case 6: sbc64 (cpu); break;
2524 case 7: sbcs64 (cpu); break;
2525 }
2526 }
2527
2528 static uint32_t
2529 testConditionCode (sim_cpu *cpu, CondCode cc)
2530 {
2531 /* This should be reduceable to branchless logic
2532 by some careful testing of bits in CC followed
2533 by the requisite masking and combining of bits
2534 from the flag register.
2535
2536 For now we do it with a switch. */
2537 int res;
2538
2539 switch (cc)
2540 {
2541 case EQ: res = IS_SET (Z); break;
2542 case NE: res = IS_CLEAR (Z); break;
2543 case CS: res = IS_SET (C); break;
2544 case CC: res = IS_CLEAR (C); break;
2545 case MI: res = IS_SET (N); break;
2546 case PL: res = IS_CLEAR (N); break;
2547 case VS: res = IS_SET (V); break;
2548 case VC: res = IS_CLEAR (V); break;
2549 case HI: res = IS_SET (C) && IS_CLEAR (Z); break;
2550 case LS: res = IS_CLEAR (C) || IS_SET (Z); break;
2551 case GE: res = IS_SET (N) == IS_SET (V); break;
2552 case LT: res = IS_SET (N) != IS_SET (V); break;
2553 case GT: res = IS_CLEAR (Z) && (IS_SET (N) == IS_SET (V)); break;
2554 case LE: res = IS_SET (Z) || (IS_SET (N) != IS_SET (V)); break;
2555 case AL:
2556 case NV:
2557 default:
2558 res = 1;
2559 break;
2560 }
2561 return res;
2562 }
2563
2564 static void
2565 CondCompare (sim_cpu *cpu) /* aka: ccmp and ccmn */
2566 {
2567 /* instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit
2568 instr[30] = compare with positive (1) or negative value (0)
2569 instr[29,21] = 1 1101 0010
2570 instr[20,16] = Rm or const
2571 instr[15,12] = cond
2572 instr[11] = compare reg (0) or const (1)
2573 instr[10] = 0
2574 instr[9,5] = Rn
2575 instr[4] = 0
2576 instr[3,0] = value for CPSR bits if the comparison does not take place. */
2577 signed int negate;
2578 unsigned rm;
2579 unsigned rn;
2580
2581 NYI_assert (29, 21, 0x1d2);
2582 NYI_assert (10, 10, 0);
2583 NYI_assert (4, 4, 0);
2584
2585 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2586 if (! testConditionCode (cpu, INSTR (15, 12)))
2587 {
2588 aarch64_set_CPSR (cpu, INSTR (3, 0));
2589 return;
2590 }
2591
2592 negate = INSTR (30, 30) ? 1 : -1;
2593 rm = INSTR (20, 16);
2594 rn = INSTR ( 9, 5);
2595
2596 if (INSTR (31, 31))
2597 {
2598 if (INSTR (11, 11))
2599 set_flags_for_sub64 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK),
2600 negate * (uint64_t) rm);
2601 else
2602 set_flags_for_sub64 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK),
2603 negate * aarch64_get_reg_u64 (cpu, rm, SP_OK));
2604 }
2605 else
2606 {
2607 if (INSTR (11, 11))
2608 set_flags_for_sub32 (cpu, aarch64_get_reg_u32 (cpu, rn, SP_OK),
2609 negate * rm);
2610 else
2611 set_flags_for_sub32 (cpu, aarch64_get_reg_u32 (cpu, rn, SP_OK),
2612 negate * aarch64_get_reg_u32 (cpu, rm, SP_OK));
2613 }
2614 }
2615
2616 static void
2617 do_vec_MOV_whole_vector (sim_cpu *cpu)
2618 {
2619 /* MOV Vd.T, Vs.T (alias for ORR Vd.T, Vn.T, Vm.T where Vn == Vm)
2620
2621 instr[31] = 0
2622 instr[30] = half(0)/full(1)
2623 instr[29,21] = 001110101
2624 instr[20,16] = Vs
2625 instr[15,10] = 000111
2626 instr[9,5] = Vs
2627 instr[4,0] = Vd */
2628
2629 unsigned vs = INSTR (9, 5);
2630 unsigned vd = INSTR (4, 0);
2631
2632 NYI_assert (29, 21, 0x075);
2633 NYI_assert (15, 10, 0x07);
2634
2635 if (INSTR (20, 16) != vs)
2636 HALT_NYI;
2637
2638 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2639 if (INSTR (30, 30))
2640 aarch64_set_vec_u64 (cpu, vd, 1, aarch64_get_vec_u64 (cpu, vs, 1));
2641
2642 aarch64_set_vec_u64 (cpu, vd, 0, aarch64_get_vec_u64 (cpu, vs, 0));
2643 }
2644
2645 static void
2646 do_vec_MOV_into_scalar (sim_cpu *cpu)
2647 {
2648 /* instr[31] = 0
2649 instr[30] = word(0)/long(1)
2650 instr[29,21] = 00 1110 000
2651 instr[20,18] = element size and index
2652 instr[17,10] = 00 0011 11
2653 instr[9,5] = V source
2654 instr[4,0] = R dest */
2655
2656 unsigned vs = INSTR (9, 5);
2657 unsigned rd = INSTR (4, 0);
2658
2659 NYI_assert (29, 21, 0x070);
2660 NYI_assert (17, 10, 0x0F);
2661
2662 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2663 switch (INSTR (20, 18))
2664 {
2665 case 0x2:
2666 aarch64_set_reg_u64 (cpu, rd, NO_SP, aarch64_get_vec_u64 (cpu, vs, 0));
2667 break;
2668
2669 case 0x6:
2670 aarch64_set_reg_u64 (cpu, rd, NO_SP, aarch64_get_vec_u64 (cpu, vs, 1));
2671 break;
2672
2673 case 0x1:
2674 case 0x3:
2675 case 0x5:
2676 case 0x7:
2677 aarch64_set_reg_u64 (cpu, rd, NO_SP, aarch64_get_vec_u32
2678 (cpu, vs, INSTR (20, 19)));
2679 break;
2680
2681 default:
2682 HALT_NYI;
2683 }
2684 }
2685
2686 static void
2687 do_vec_INS (sim_cpu *cpu)
2688 {
2689 /* instr[31,21] = 01001110000
2690 instr[20,16] = element size and index
2691 instr[15,10] = 000111
2692 instr[9,5] = W source
2693 instr[4,0] = V dest */
2694
2695 int index;
2696 unsigned rs = INSTR (9, 5);
2697 unsigned vd = INSTR (4, 0);
2698
2699 NYI_assert (31, 21, 0x270);
2700 NYI_assert (15, 10, 0x07);
2701
2702 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2703 if (INSTR (16, 16))
2704 {
2705 index = INSTR (20, 17);
2706 aarch64_set_vec_u8 (cpu, vd, index,
2707 aarch64_get_reg_u8 (cpu, rs, NO_SP));
2708 }
2709 else if (INSTR (17, 17))
2710 {
2711 index = INSTR (20, 18);
2712 aarch64_set_vec_u16 (cpu, vd, index,
2713 aarch64_get_reg_u16 (cpu, rs, NO_SP));
2714 }
2715 else if (INSTR (18, 18))
2716 {
2717 index = INSTR (20, 19);
2718 aarch64_set_vec_u32 (cpu, vd, index,
2719 aarch64_get_reg_u32 (cpu, rs, NO_SP));
2720 }
2721 else if (INSTR (19, 19))
2722 {
2723 index = INSTR (20, 20);
2724 aarch64_set_vec_u64 (cpu, vd, index,
2725 aarch64_get_reg_u64 (cpu, rs, NO_SP));
2726 }
2727 else
2728 HALT_NYI;
2729 }
2730
2731 static void
2732 do_vec_DUP_vector_into_vector (sim_cpu *cpu)
2733 {
2734 /* instr[31] = 0
2735 instr[30] = half(0)/full(1)
2736 instr[29,21] = 00 1110 000
2737 instr[20,16] = element size and index
2738 instr[15,10] = 0000 01
2739 instr[9,5] = V source
2740 instr[4,0] = V dest. */
2741
2742 unsigned full = INSTR (30, 30);
2743 unsigned vs = INSTR (9, 5);
2744 unsigned vd = INSTR (4, 0);
2745 int i, index;
2746
2747 NYI_assert (29, 21, 0x070);
2748 NYI_assert (15, 10, 0x01);
2749
2750 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2751 if (INSTR (16, 16))
2752 {
2753 index = INSTR (20, 17);
2754
2755 for (i = 0; i < (full ? 16 : 8); i++)
2756 aarch64_set_vec_u8 (cpu, vd, i, aarch64_get_vec_u8 (cpu, vs, index));
2757 }
2758 else if (INSTR (17, 17))
2759 {
2760 index = INSTR (20, 18);
2761
2762 for (i = 0; i < (full ? 8 : 4); i++)
2763 aarch64_set_vec_u16 (cpu, vd, i, aarch64_get_vec_u16 (cpu, vs, index));
2764 }
2765 else if (INSTR (18, 18))
2766 {
2767 index = INSTR (20, 19);
2768
2769 for (i = 0; i < (full ? 4 : 2); i++)
2770 aarch64_set_vec_u32 (cpu, vd, i, aarch64_get_vec_u32 (cpu, vs, index));
2771 }
2772 else
2773 {
2774 if (INSTR (19, 19) == 0)
2775 HALT_UNALLOC;
2776
2777 if (! full)
2778 HALT_UNALLOC;
2779
2780 index = INSTR (20, 20);
2781
2782 for (i = 0; i < 2; i++)
2783 aarch64_set_vec_u64 (cpu, vd, i, aarch64_get_vec_u64 (cpu, vs, index));
2784 }
2785 }
2786
2787 static void
2788 do_vec_TBL (sim_cpu *cpu)
2789 {
2790 /* instr[31] = 0
2791 instr[30] = half(0)/full(1)
2792 instr[29,21] = 00 1110 000
2793 instr[20,16] = Vm
2794 instr[15] = 0
2795 instr[14,13] = vec length
2796 instr[12,10] = 000
2797 instr[9,5] = V start
2798 instr[4,0] = V dest */
2799
2800 int full = INSTR (30, 30);
2801 int len = INSTR (14, 13) + 1;
2802 unsigned vm = INSTR (20, 16);
2803 unsigned vn = INSTR (9, 5);
2804 unsigned vd = INSTR (4, 0);
2805 unsigned i;
2806
2807 NYI_assert (29, 21, 0x070);
2808 NYI_assert (12, 10, 0);
2809
2810 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2811 for (i = 0; i < (full ? 16 : 8); i++)
2812 {
2813 unsigned int selector = aarch64_get_vec_u8 (cpu, vm, i);
2814 uint8_t val;
2815
2816 if (selector < 16)
2817 val = aarch64_get_vec_u8 (cpu, vn, selector);
2818 else if (selector < 32)
2819 val = len < 2 ? 0 : aarch64_get_vec_u8 (cpu, vn + 1, selector - 16);
2820 else if (selector < 48)
2821 val = len < 3 ? 0 : aarch64_get_vec_u8 (cpu, vn + 2, selector - 32);
2822 else if (selector < 64)
2823 val = len < 4 ? 0 : aarch64_get_vec_u8 (cpu, vn + 3, selector - 48);
2824 else
2825 val = 0;
2826
2827 aarch64_set_vec_u8 (cpu, vd, i, val);
2828 }
2829 }
2830
2831 static void
2832 do_vec_TRN (sim_cpu *cpu)
2833 {
2834 /* instr[31] = 0
2835 instr[30] = half(0)/full(1)
2836 instr[29,24] = 00 1110
2837 instr[23,22] = size
2838 instr[21] = 0
2839 instr[20,16] = Vm
2840 instr[15] = 0
2841 instr[14] = TRN1 (0) / TRN2 (1)
2842 instr[13,10] = 1010
2843 instr[9,5] = V source
2844 instr[4,0] = V dest. */
2845
2846 int full = INSTR (30, 30);
2847 int second = INSTR (14, 14);
2848 unsigned vm = INSTR (20, 16);
2849 unsigned vn = INSTR (9, 5);
2850 unsigned vd = INSTR (4, 0);
2851 unsigned i;
2852
2853 NYI_assert (29, 24, 0x0E);
2854 NYI_assert (13, 10, 0xA);
2855
2856 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2857 switch (INSTR (23, 22))
2858 {
2859 case 0:
2860 for (i = 0; i < (full ? 8 : 4); i++)
2861 {
2862 aarch64_set_vec_u8
2863 (cpu, vd, i * 2,
2864 aarch64_get_vec_u8 (cpu, second ? vm : vn, i * 2));
2865 aarch64_set_vec_u8
2866 (cpu, vd, 1 * 2 + 1,
2867 aarch64_get_vec_u8 (cpu, second ? vn : vm, i * 2 + 1));
2868 }
2869 break;
2870
2871 case 1:
2872 for (i = 0; i < (full ? 4 : 2); i++)
2873 {
2874 aarch64_set_vec_u16
2875 (cpu, vd, i * 2,
2876 aarch64_get_vec_u16 (cpu, second ? vm : vn, i * 2));
2877 aarch64_set_vec_u16
2878 (cpu, vd, 1 * 2 + 1,
2879 aarch64_get_vec_u16 (cpu, second ? vn : vm, i * 2 + 1));
2880 }
2881 break;
2882
2883 case 2:
2884 aarch64_set_vec_u32
2885 (cpu, vd, 0, aarch64_get_vec_u32 (cpu, second ? vm : vn, 0));
2886 aarch64_set_vec_u32
2887 (cpu, vd, 1, aarch64_get_vec_u32 (cpu, second ? vn : vm, 1));
2888 aarch64_set_vec_u32
2889 (cpu, vd, 2, aarch64_get_vec_u32 (cpu, second ? vm : vn, 2));
2890 aarch64_set_vec_u32
2891 (cpu, vd, 3, aarch64_get_vec_u32 (cpu, second ? vn : vm, 3));
2892 break;
2893
2894 case 3:
2895 if (! full)
2896 HALT_UNALLOC;
2897
2898 aarch64_set_vec_u64 (cpu, vd, 0,
2899 aarch64_get_vec_u64 (cpu, second ? vm : vn, 0));
2900 aarch64_set_vec_u64 (cpu, vd, 1,
2901 aarch64_get_vec_u64 (cpu, second ? vn : vm, 1));
2902 break;
2903 }
2904 }
2905
2906 static void
2907 do_vec_DUP_scalar_into_vector (sim_cpu *cpu)
2908 {
2909 /* instr[31] = 0
2910 instr[30] = 0=> zero top 64-bits, 1=> duplicate into top 64-bits
2911 [must be 1 for 64-bit xfer]
2912 instr[29,20] = 00 1110 0000
2913 instr[19,16] = element size: 0001=> 8-bits, 0010=> 16-bits,
2914 0100=> 32-bits. 1000=>64-bits
2915 instr[15,10] = 0000 11
2916 instr[9,5] = W source
2917 instr[4,0] = V dest. */
2918
2919 unsigned i;
2920 unsigned Vd = INSTR (4, 0);
2921 unsigned Rs = INSTR (9, 5);
2922 int both = INSTR (30, 30);
2923
2924 NYI_assert (29, 20, 0x0E0);
2925 NYI_assert (15, 10, 0x03);
2926
2927 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2928 switch (INSTR (19, 16))
2929 {
2930 case 1:
2931 for (i = 0; i < (both ? 16 : 8); i++)
2932 aarch64_set_vec_u8 (cpu, Vd, i, aarch64_get_reg_u8 (cpu, Rs, NO_SP));
2933 break;
2934
2935 case 2:
2936 for (i = 0; i < (both ? 8 : 4); i++)
2937 aarch64_set_vec_u16 (cpu, Vd, i, aarch64_get_reg_u16 (cpu, Rs, NO_SP));
2938 break;
2939
2940 case 4:
2941 for (i = 0; i < (both ? 4 : 2); i++)
2942 aarch64_set_vec_u32 (cpu, Vd, i, aarch64_get_reg_u32 (cpu, Rs, NO_SP));
2943 break;
2944
2945 case 8:
2946 if (!both)
2947 HALT_NYI;
2948 aarch64_set_vec_u64 (cpu, Vd, 0, aarch64_get_reg_u64 (cpu, Rs, NO_SP));
2949 aarch64_set_vec_u64 (cpu, Vd, 1, aarch64_get_reg_u64 (cpu, Rs, NO_SP));
2950 break;
2951
2952 default:
2953 HALT_NYI;
2954 }
2955 }
2956
2957 static void
2958 do_vec_UZP (sim_cpu *cpu)
2959 {
2960 /* instr[31] = 0
2961 instr[30] = half(0)/full(1)
2962 instr[29,24] = 00 1110
2963 instr[23,22] = size: byte(00), half(01), word (10), long (11)
2964 instr[21] = 0
2965 instr[20,16] = Vm
2966 instr[15] = 0
2967 instr[14] = lower (0) / upper (1)
2968 instr[13,10] = 0110
2969 instr[9,5] = Vn
2970 instr[4,0] = Vd. */
2971
2972 int full = INSTR (30, 30);
2973 int upper = INSTR (14, 14);
2974
2975 unsigned vm = INSTR (20, 16);
2976 unsigned vn = INSTR (9, 5);
2977 unsigned vd = INSTR (4, 0);
2978
2979 uint64_t val_m1 = aarch64_get_vec_u64 (cpu, vm, 0);
2980 uint64_t val_m2 = aarch64_get_vec_u64 (cpu, vm, 1);
2981 uint64_t val_n1 = aarch64_get_vec_u64 (cpu, vn, 0);
2982 uint64_t val_n2 = aarch64_get_vec_u64 (cpu, vn, 1);
2983
2984 uint64_t val1 = 0;
2985 uint64_t val2 = 0;
2986
2987 uint64_t input1 = upper ? val_n1 : val_m1;
2988 uint64_t input2 = upper ? val_n2 : val_m2;
2989 unsigned i;
2990
2991 NYI_assert (29, 24, 0x0E);
2992 NYI_assert (21, 21, 0);
2993 NYI_assert (15, 15, 0);
2994 NYI_assert (13, 10, 6);
2995
2996 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
2997 switch (INSTR (23, 23))
2998 {
2999 case 0:
3000 for (i = 0; i < 8; i++)
3001 {
3002 val1 |= (input1 >> (i * 8)) & (0xFFULL << (i * 8));
3003 val2 |= (input2 >> (i * 8)) & (0xFFULL << (i * 8));
3004 }
3005 break;
3006
3007 case 1:
3008 for (i = 0; i < 4; i++)
3009 {
3010 val1 |= (input1 >> (i * 16)) & (0xFFFFULL << (i * 16));
3011 val2 |= (input2 >> (i * 16)) & (0xFFFFULL << (i * 16));
3012 }
3013 break;
3014
3015 case 2:
3016 val1 = ((input1 & 0xFFFFFFFF) | ((input1 >> 32) & 0xFFFFFFFF00000000ULL));
3017 val2 = ((input2 & 0xFFFFFFFF) | ((input2 >> 32) & 0xFFFFFFFF00000000ULL));
3018
3019 case 3:
3020 val1 = input1;
3021 val2 = input2;
3022 break;
3023 }
3024
3025 aarch64_set_vec_u64 (cpu, vd, 0, val1);
3026 if (full)
3027 aarch64_set_vec_u64 (cpu, vd, 1, val2);
3028 }
3029
3030 static void
3031 do_vec_ZIP (sim_cpu *cpu)
3032 {
3033 /* instr[31] = 0
3034 instr[30] = half(0)/full(1)
3035 instr[29,24] = 00 1110
3036 instr[23,22] = size: byte(00), hald(01), word (10), long (11)
3037 instr[21] = 0
3038 instr[20,16] = Vm
3039 instr[15] = 0
3040 instr[14] = lower (0) / upper (1)
3041 instr[13,10] = 1110
3042 instr[9,5] = Vn
3043 instr[4,0] = Vd. */
3044
3045 int full = INSTR (30, 30);
3046 int upper = INSTR (14, 14);
3047
3048 unsigned vm = INSTR (20, 16);
3049 unsigned vn = INSTR (9, 5);
3050 unsigned vd = INSTR (4, 0);
3051
3052 uint64_t val_m1 = aarch64_get_vec_u64 (cpu, vm, 0);
3053 uint64_t val_m2 = aarch64_get_vec_u64 (cpu, vm, 1);
3054 uint64_t val_n1 = aarch64_get_vec_u64 (cpu, vn, 0);
3055 uint64_t val_n2 = aarch64_get_vec_u64 (cpu, vn, 1);
3056
3057 uint64_t val1 = 0;
3058 uint64_t val2 = 0;
3059
3060 uint64_t input1 = upper ? val_n1 : val_m1;
3061 uint64_t input2 = upper ? val_n2 : val_m2;
3062
3063 NYI_assert (29, 24, 0x0E);
3064 NYI_assert (21, 21, 0);
3065 NYI_assert (15, 15, 0);
3066 NYI_assert (13, 10, 0xE);
3067
3068 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
3069 switch (INSTR (23, 23))
3070 {
3071 case 0:
3072 val1 =
3073 ((input1 << 0) & (0xFF << 0))
3074 | ((input2 << 8) & (0xFF << 8))
3075 | ((input1 << 8) & (0xFF << 16))
3076 | ((input2 << 16) & (0xFF << 24))
3077 | ((input1 << 16) & (0xFFULL << 32))
3078 | ((input2 << 24) & (0xFFULL << 40))
3079 | ((input1 << 24) & (0xFFULL << 48))
3080 | ((input2 << 32) & (0xFFULL << 56));
3081
3082 val2 =
3083 ((input1 >> 32) & (0xFF << 0))
3084 | ((input2 >> 24) & (0xFF << 8))
3085 | ((input1 >> 24) & (0xFF << 16))
3086 | ((input2 >> 16) & (0xFF << 24))
3087 | ((input1 >> 16) & (0xFFULL << 32))
3088 | ((input2 >> 8) & (0xFFULL << 40))
3089 | ((input1 >> 8) & (0xFFULL << 48))
3090 | ((input2 >> 0) & (0xFFULL << 56));
3091 break;
3092
3093 case 1:
3094 val1 =
3095 ((input1 << 0) & (0xFFFF << 0))
3096 | ((input2 << 16) & (0xFFFF << 16))
3097 | ((input1 << 16) & (0xFFFFULL << 32))
3098 | ((input2 << 32) & (0xFFFFULL << 48));
3099
3100 val2 =
3101 ((input1 >> 32) & (0xFFFF << 0))
3102 | ((input2 >> 16) & (0xFFFF << 16))
3103 | ((input1 >> 16) & (0xFFFFULL << 32))
3104 | ((input2 >> 0) & (0xFFFFULL << 48));
3105 break;
3106
3107 case 2:
3108 val1 = (input1 & 0xFFFFFFFFULL) | (input2 << 32);
3109 val2 = (input2 & 0xFFFFFFFFULL) | (input1 << 32);
3110 break;
3111
3112 case 3:
3113 val1 = input1;
3114 val2 = input2;
3115 break;
3116 }
3117
3118 aarch64_set_vec_u64 (cpu, vd, 0, val1);
3119 if (full)
3120 aarch64_set_vec_u64 (cpu, vd, 1, val2);
3121 }
3122
3123 /* Floating point immediates are encoded in 8 bits.
3124 fpimm[7] = sign bit.
3125 fpimm[6:4] = signed exponent.
3126 fpimm[3:0] = fraction (assuming leading 1).
3127 i.e. F = s * 1.f * 2^(e - b). */
3128
3129 static float
3130 fp_immediate_for_encoding_32 (uint32_t imm8)
3131 {
3132 float u;
3133 uint32_t s, e, f, i;
3134
3135 s = (imm8 >> 7) & 0x1;
3136 e = (imm8 >> 4) & 0x7;
3137 f = imm8 & 0xf;
3138
3139 /* The fp value is s * n/16 * 2r where n is 16+e. */
3140 u = (16.0 + f) / 16.0;
3141
3142 /* N.B. exponent is signed. */
3143 if (e < 4)
3144 {
3145 int epos = e;
3146
3147 for (i = 0; i <= epos; i++)
3148 u *= 2.0;
3149 }
3150 else
3151 {
3152 int eneg = 7 - e;
3153
3154 for (i = 0; i < eneg; i++)
3155 u /= 2.0;
3156 }
3157
3158 if (s)
3159 u = - u;
3160
3161 return u;
3162 }
3163
3164 static double
3165 fp_immediate_for_encoding_64 (uint32_t imm8)
3166 {
3167 double u;
3168 uint32_t s, e, f, i;
3169
3170 s = (imm8 >> 7) & 0x1;
3171 e = (imm8 >> 4) & 0x7;
3172 f = imm8 & 0xf;
3173
3174 /* The fp value is s * n/16 * 2r where n is 16+e. */
3175 u = (16.0 + f) / 16.0;
3176
3177 /* N.B. exponent is signed. */
3178 if (e < 4)
3179 {
3180 int epos = e;
3181
3182 for (i = 0; i <= epos; i++)
3183 u *= 2.0;
3184 }
3185 else
3186 {
3187 int eneg = 7 - e;
3188
3189 for (i = 0; i < eneg; i++)
3190 u /= 2.0;
3191 }
3192
3193 if (s)
3194 u = - u;
3195
3196 return u;
3197 }
3198
3199 static void
3200 do_vec_MOV_immediate (sim_cpu *cpu)
3201 {
3202 /* instr[31] = 0
3203 instr[30] = full/half selector
3204 instr[29,19] = 00111100000
3205 instr[18,16] = high 3 bits of uimm8
3206 instr[15,12] = size & shift:
3207 0000 => 32-bit
3208 0010 => 32-bit + LSL#8
3209 0100 => 32-bit + LSL#16
3210 0110 => 32-bit + LSL#24
3211 1010 => 16-bit + LSL#8
3212 1000 => 16-bit
3213 1101 => 32-bit + MSL#16
3214 1100 => 32-bit + MSL#8
3215 1110 => 8-bit
3216 1111 => double
3217 instr[11,10] = 01
3218 instr[9,5] = low 5-bits of uimm8
3219 instr[4,0] = Vd. */
3220
3221 int full = INSTR (30, 30);
3222 unsigned vd = INSTR (4, 0);
3223 unsigned val = (INSTR (18, 16) << 5) | INSTR (9, 5);
3224 unsigned i;
3225
3226 NYI_assert (29, 19, 0x1E0);
3227 NYI_assert (11, 10, 1);
3228
3229 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
3230 switch (INSTR (15, 12))
3231 {
3232 case 0x0: /* 32-bit, no shift. */
3233 case 0x2: /* 32-bit, shift by 8. */
3234 case 0x4: /* 32-bit, shift by 16. */
3235 case 0x6: /* 32-bit, shift by 24. */
3236 val <<= (8 * INSTR (14, 13));
3237 for (i = 0; i < (full ? 4 : 2); i++)
3238 aarch64_set_vec_u32 (cpu, vd, i, val);
3239 break;
3240
3241 case 0xa: /* 16-bit, shift by 8. */
3242 val <<= 8;
3243 /* Fall through. */
3244 case 0x8: /* 16-bit, no shift. */
3245 for (i = 0; i < (full ? 8 : 4); i++)
3246 aarch64_set_vec_u16 (cpu, vd, i, val);
3247 /* Fall through. */
3248 case 0xd: /* 32-bit, mask shift by 16. */
3249 val <<= 8;
3250 val |= 0xFF;
3251 /* Fall through. */
3252 case 0xc: /* 32-bit, mask shift by 8. */
3253 val <<= 8;
3254 val |= 0xFF;
3255 for (i = 0; i < (full ? 4 : 2); i++)
3256 aarch64_set_vec_u32 (cpu, vd, i, val);
3257 break;
3258
3259 case 0xe: /* 8-bit, no shift. */
3260 for (i = 0; i < (full ? 16 : 8); i++)
3261 aarch64_set_vec_u8 (cpu, vd, i, val);
3262 break;
3263
3264 case 0xf: /* FMOV Vs.{2|4}S, #fpimm. */
3265 {
3266 float u = fp_immediate_for_encoding_32 (val);
3267 for (i = 0; i < (full ? 4 : 2); i++)
3268 aarch64_set_vec_float (cpu, vd, i, u);
3269 break;
3270 }
3271
3272 default:
3273 HALT_NYI;
3274 }
3275 }
3276
3277 static void
3278 do_vec_MVNI (sim_cpu *cpu)
3279 {
3280 /* instr[31] = 0
3281 instr[30] = full/half selector
3282 instr[29,19] = 10111100000
3283 instr[18,16] = high 3 bits of uimm8
3284 instr[15,12] = selector
3285 instr[11,10] = 01
3286 instr[9,5] = low 5-bits of uimm8
3287 instr[4,0] = Vd. */
3288
3289 int full = INSTR (30, 30);
3290 unsigned vd = INSTR (4, 0);
3291 unsigned val = (INSTR (18, 16) << 5) | INSTR (9, 5);
3292 unsigned i;
3293
3294 NYI_assert (29, 19, 0x5E0);
3295 NYI_assert (11, 10, 1);
3296
3297 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
3298 switch (INSTR (15, 12))
3299 {
3300 case 0x0: /* 32-bit, no shift. */
3301 case 0x2: /* 32-bit, shift by 8. */
3302 case 0x4: /* 32-bit, shift by 16. */
3303 case 0x6: /* 32-bit, shift by 24. */
3304 val <<= (8 * INSTR (14, 13));
3305 val = ~ val;
3306 for (i = 0; i < (full ? 4 : 2); i++)
3307 aarch64_set_vec_u32 (cpu, vd, i, val);
3308 return;
3309
3310 case 0xa: /* 16-bit, 8 bit shift. */
3311 val <<= 8;
3312 case 0x8: /* 16-bit, no shift. */
3313 val = ~ val;
3314 for (i = 0; i < (full ? 8 : 4); i++)
3315 aarch64_set_vec_u16 (cpu, vd, i, val);
3316 return;
3317
3318 case 0xd: /* 32-bit, mask shift by 16. */
3319 val <<= 8;
3320 val |= 0xFF;
3321 case 0xc: /* 32-bit, mask shift by 8. */
3322 val <<= 8;
3323 val |= 0xFF;
3324 val = ~ val;
3325 for (i = 0; i < (full ? 4 : 2); i++)
3326 aarch64_set_vec_u32 (cpu, vd, i, val);
3327 return;
3328
3329 case 0xE: /* MOVI Dn, #mask64 */
3330 {
3331 uint64_t mask = 0;
3332
3333 for (i = 0; i < 8; i++)
3334 if (val & (1 << i))
3335 mask |= (0xFFUL << (i * 8));
3336 aarch64_set_vec_u64 (cpu, vd, 0, mask);
3337 aarch64_set_vec_u64 (cpu, vd, 1, mask);
3338 return;
3339 }
3340
3341 case 0xf: /* FMOV Vd.2D, #fpimm. */
3342 {
3343 double u = fp_immediate_for_encoding_64 (val);
3344
3345 if (! full)
3346 HALT_UNALLOC;
3347
3348 aarch64_set_vec_double (cpu, vd, 0, u);
3349 aarch64_set_vec_double (cpu, vd, 1, u);
3350 return;
3351 }
3352
3353 default:
3354 HALT_NYI;
3355 }
3356 }
3357
3358 #define ABS(A) ((A) < 0 ? - (A) : (A))
3359
3360 static void
3361 do_vec_ABS (sim_cpu *cpu)
3362 {
3363 /* instr[31] = 0
3364 instr[30] = half(0)/full(1)
3365 instr[29,24] = 00 1110
3366 instr[23,22] = size: 00=> 8-bit, 01=> 16-bit, 10=> 32-bit, 11=> 64-bit
3367 instr[21,10] = 10 0000 1011 10
3368 instr[9,5] = Vn
3369 instr[4.0] = Vd. */
3370
3371 unsigned vn = INSTR (9, 5);
3372 unsigned vd = INSTR (4, 0);
3373 unsigned full = INSTR (30, 30);
3374 unsigned i;
3375
3376 NYI_assert (29, 24, 0x0E);
3377 NYI_assert (21, 10, 0x82E);
3378
3379 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
3380 switch (INSTR (23, 22))
3381 {
3382 case 0:
3383 for (i = 0; i < (full ? 16 : 8); i++)
3384 aarch64_set_vec_s8 (cpu, vd, i,
3385 ABS (aarch64_get_vec_s8 (cpu, vn, i)));
3386 break;
3387
3388 case 1:
3389 for (i = 0; i < (full ? 8 : 4); i++)
3390 aarch64_set_vec_s16 (cpu, vd, i,
3391 ABS (aarch64_get_vec_s16 (cpu, vn, i)));
3392 break;
3393
3394 case 2:
3395 for (i = 0; i < (full ? 4 : 2); i++)
3396 aarch64_set_vec_s32 (cpu, vd, i,
3397 ABS (aarch64_get_vec_s32 (cpu, vn, i)));
3398 break;
3399
3400 case 3:
3401 if (! full)
3402 HALT_NYI;
3403 for (i = 0; i < 2; i++)
3404 aarch64_set_vec_s64 (cpu, vd, i,
3405 ABS (aarch64_get_vec_s64 (cpu, vn, i)));
3406 break;
3407 }
3408 }
3409
3410 static void
3411 do_vec_ADDV (sim_cpu *cpu)
3412 {
3413 /* instr[31] = 0
3414 instr[30] = full/half selector
3415 instr[29,24] = 00 1110
3416 instr[23,22] = size: 00=> 8-bit, 01=> 16-bit, 10=> 32-bit, 11=> 64-bit
3417 instr[21,10] = 11 0001 1011 10
3418 instr[9,5] = Vm
3419 instr[4.0] = Rd. */
3420
3421 unsigned vm = INSTR (9, 5);
3422 unsigned rd = INSTR (4, 0);
3423 unsigned i;
3424 uint64_t val = 0;
3425 int full = INSTR (30, 30);
3426
3427 NYI_assert (29, 24, 0x0E);
3428 NYI_assert (21, 10, 0xC6E);
3429
3430 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
3431 switch (INSTR (23, 22))
3432 {
3433 case 0:
3434 for (i = 0; i < (full ? 16 : 8); i++)
3435 val += aarch64_get_vec_u8 (cpu, vm, i);
3436 aarch64_set_reg_u64 (cpu, rd, NO_SP, val);
3437 return;
3438
3439 case 1:
3440 for (i = 0; i < (full ? 8 : 4); i++)
3441 val += aarch64_get_vec_u16 (cpu, vm, i);
3442 aarch64_set_reg_u64 (cpu, rd, NO_SP, val);
3443 return;
3444
3445 case 2:
3446 for (i = 0; i < (full ? 4 : 2); i++)
3447 val += aarch64_get_vec_u32 (cpu, vm, i);
3448 aarch64_set_reg_u64 (cpu, rd, NO_SP, val);
3449 return;
3450
3451 case 3:
3452 if (! full)
3453 HALT_UNALLOC;
3454 val = aarch64_get_vec_u64 (cpu, vm, 0);
3455 val += aarch64_get_vec_u64 (cpu, vm, 1);
3456 aarch64_set_reg_u64 (cpu, rd, NO_SP, val);
3457 return;
3458 }
3459 }
3460
3461 static void
3462 do_vec_ins_2 (sim_cpu *cpu)
3463 {
3464 /* instr[31,21] = 01001110000
3465 instr[20,18] = size & element selector
3466 instr[17,14] = 0000
3467 instr[13] = direction: to vec(0), from vec (1)
3468 instr[12,10] = 111
3469 instr[9,5] = Vm
3470 instr[4,0] = Vd. */
3471
3472 unsigned elem;
3473 unsigned vm = INSTR (9, 5);
3474 unsigned vd = INSTR (4, 0);
3475
3476 NYI_assert (31, 21, 0x270);
3477 NYI_assert (17, 14, 0);
3478 NYI_assert (12, 10, 7);
3479
3480 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
3481 if (INSTR (13, 13) == 1)
3482 {
3483 if (INSTR (18, 18) == 1)
3484 {
3485 /* 32-bit moves. */
3486 elem = INSTR (20, 19);
3487 aarch64_set_reg_u64 (cpu, vd, NO_SP,
3488 aarch64_get_vec_u32 (cpu, vm, elem));
3489 }
3490 else
3491 {
3492 /* 64-bit moves. */
3493 if (INSTR (19, 19) != 1)
3494 HALT_NYI;
3495
3496 elem = INSTR (20, 20);
3497 aarch64_set_reg_u64 (cpu, vd, NO_SP,
3498 aarch64_get_vec_u64 (cpu, vm, elem));
3499 }
3500 }
3501 else
3502 {
3503 if (INSTR (18, 18) == 1)
3504 {
3505 /* 32-bit moves. */
3506 elem = INSTR (20, 19);
3507 aarch64_set_vec_u32 (cpu, vd, elem,
3508 aarch64_get_reg_u32 (cpu, vm, NO_SP));
3509 }
3510 else
3511 {
3512 /* 64-bit moves. */
3513 if (INSTR (19, 19) != 1)
3514 HALT_NYI;
3515
3516 elem = INSTR (20, 20);
3517 aarch64_set_vec_u64 (cpu, vd, elem,
3518 aarch64_get_reg_u64 (cpu, vm, NO_SP));
3519 }
3520 }
3521 }
3522
3523 #define DO_VEC_WIDENING_MUL(N, DST_TYPE, READ_TYPE, WRITE_TYPE) \
3524 do \
3525 { \
3526 DST_TYPE a[N], b[N]; \
3527 \
3528 for (i = 0; i < (N); i++) \
3529 { \
3530 a[i] = aarch64_get_vec_##READ_TYPE (cpu, vn, i + bias); \
3531 b[i] = aarch64_get_vec_##READ_TYPE (cpu, vm, i + bias); \
3532 } \
3533 for (i = 0; i < (N); i++) \
3534 aarch64_set_vec_##WRITE_TYPE (cpu, vd, i, a[i] * b[i]); \
3535 } \
3536 while (0)
3537
3538 static void
3539 do_vec_mull (sim_cpu *cpu)
3540 {
3541 /* instr[31] = 0
3542 instr[30] = lower(0)/upper(1) selector
3543 instr[29] = signed(0)/unsigned(1)
3544 instr[28,24] = 0 1110
3545 instr[23,22] = size: 8-bit (00), 16-bit (01), 32-bit (10)
3546 instr[21] = 1
3547 instr[20,16] = Vm
3548 instr[15,10] = 11 0000
3549 instr[9,5] = Vn
3550 instr[4.0] = Vd. */
3551
3552 int unsign = INSTR (29, 29);
3553 int bias = INSTR (30, 30);
3554 unsigned vm = INSTR (20, 16);
3555 unsigned vn = INSTR ( 9, 5);
3556 unsigned vd = INSTR ( 4, 0);
3557 unsigned i;
3558
3559 NYI_assert (28, 24, 0x0E);
3560 NYI_assert (15, 10, 0x30);
3561
3562 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
3563 /* NB: Read source values before writing results, in case
3564 the source and destination vectors are the same. */
3565 switch (INSTR (23, 22))
3566 {
3567 case 0:
3568 if (bias)
3569 bias = 8;
3570 if (unsign)
3571 DO_VEC_WIDENING_MUL (8, uint16_t, u8, u16);
3572 else
3573 DO_VEC_WIDENING_MUL (8, int16_t, s8, s16);
3574 return;
3575
3576 case 1:
3577 if (bias)
3578 bias = 4;
3579 if (unsign)
3580 DO_VEC_WIDENING_MUL (4, uint32_t, u16, u32);
3581 else
3582 DO_VEC_WIDENING_MUL (4, int32_t, s16, s32);
3583 return;
3584
3585 case 2:
3586 if (bias)
3587 bias = 2;
3588 if (unsign)
3589 DO_VEC_WIDENING_MUL (2, uint64_t, u32, u64);
3590 else
3591 DO_VEC_WIDENING_MUL (2, int64_t, s32, s64);
3592 return;
3593
3594 case 3:
3595 HALT_NYI;
3596 }
3597 }
3598
3599 static void
3600 do_vec_fadd (sim_cpu *cpu)
3601 {
3602 /* instr[31] = 0
3603 instr[30] = half(0)/full(1)
3604 instr[29,24] = 001110
3605 instr[23] = FADD(0)/FSUB(1)
3606 instr[22] = float (0)/double(1)
3607 instr[21] = 1
3608 instr[20,16] = Vm
3609 instr[15,10] = 110101
3610 instr[9,5] = Vn
3611 instr[4.0] = Vd. */
3612
3613 unsigned vm = INSTR (20, 16);
3614 unsigned vn = INSTR (9, 5);
3615 unsigned vd = INSTR (4, 0);
3616 unsigned i;
3617 int full = INSTR (30, 30);
3618
3619 NYI_assert (29, 24, 0x0E);
3620 NYI_assert (21, 21, 1);
3621 NYI_assert (15, 10, 0x35);
3622
3623 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
3624 if (INSTR (23, 23))
3625 {
3626 if (INSTR (22, 22))
3627 {
3628 if (! full)
3629 HALT_NYI;
3630
3631 for (i = 0; i < 2; i++)
3632 aarch64_set_vec_double (cpu, vd, i,
3633 aarch64_get_vec_double (cpu, vn, i)
3634 - aarch64_get_vec_double (cpu, vm, i));
3635 }
3636 else
3637 {
3638 for (i = 0; i < (full ? 4 : 2); i++)
3639 aarch64_set_vec_float (cpu, vd, i,
3640 aarch64_get_vec_float (cpu, vn, i)
3641 - aarch64_get_vec_float (cpu, vm, i));
3642 }
3643 }
3644 else
3645 {
3646 if (INSTR (22, 22))
3647 {
3648 if (! full)
3649 HALT_NYI;
3650
3651 for (i = 0; i < 2; i++)
3652 aarch64_set_vec_double (cpu, vd, i,
3653 aarch64_get_vec_double (cpu, vm, i)
3654 + aarch64_get_vec_double (cpu, vn, i));
3655 }
3656 else
3657 {
3658 for (i = 0; i < (full ? 4 : 2); i++)
3659 aarch64_set_vec_float (cpu, vd, i,
3660 aarch64_get_vec_float (cpu, vm, i)
3661 + aarch64_get_vec_float (cpu, vn, i));
3662 }
3663 }
3664 }
3665
3666 static void
3667 do_vec_add (sim_cpu *cpu)
3668 {
3669 /* instr[31] = 0
3670 instr[30] = full/half selector
3671 instr[29,24] = 001110
3672 instr[23,22] = size: 00=> 8-bit, 01=> 16-bit, 10=> 32-bit, 11=> 64-bit
3673 instr[21] = 1
3674 instr[20,16] = Vn
3675 instr[15,10] = 100001
3676 instr[9,5] = Vm
3677 instr[4.0] = Vd. */
3678
3679 unsigned vm = INSTR (20, 16);
3680 unsigned vn = INSTR (9, 5);
3681 unsigned vd = INSTR (4, 0);
3682 unsigned i;
3683 int full = INSTR (30, 30);
3684
3685 NYI_assert (29, 24, 0x0E);
3686 NYI_assert (21, 21, 1);
3687 NYI_assert (15, 10, 0x21);
3688
3689 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
3690 switch (INSTR (23, 22))
3691 {
3692 case 0:
3693 for (i = 0; i < (full ? 16 : 8); i++)
3694 aarch64_set_vec_u8 (cpu, vd, i, aarch64_get_vec_u8 (cpu, vn, i)
3695 + aarch64_get_vec_u8 (cpu, vm, i));
3696 return;
3697
3698 case 1:
3699 for (i = 0; i < (full ? 8 : 4); i++)
3700 aarch64_set_vec_u16 (cpu, vd, i, aarch64_get_vec_u16 (cpu, vn, i)
3701 + aarch64_get_vec_u16 (cpu, vm, i));
3702 return;
3703
3704 case 2:
3705 for (i = 0; i < (full ? 4 : 2); i++)
3706 aarch64_set_vec_u32 (cpu, vd, i, aarch64_get_vec_u32 (cpu, vn, i)
3707 + aarch64_get_vec_u32 (cpu, vm, i));
3708 return;
3709
3710 case 3:
3711 if (! full)
3712 HALT_UNALLOC;
3713 aarch64_set_vec_u64 (cpu, vd, 0, aarch64_get_vec_u64 (cpu, vn, 0)
3714 + aarch64_get_vec_u64 (cpu, vm, 0));
3715 aarch64_set_vec_u64 (cpu, vd, 1,
3716 aarch64_get_vec_u64 (cpu, vn, 1)
3717 + aarch64_get_vec_u64 (cpu, vm, 1));
3718 return;
3719 }
3720 }
3721
3722 static void
3723 do_vec_mul (sim_cpu *cpu)
3724 {
3725 /* instr[31] = 0
3726 instr[30] = full/half selector
3727 instr[29,24] = 00 1110
3728 instr[23,22] = size: 00=> 8-bit, 01=> 16-bit, 10=> 32-bit
3729 instr[21] = 1
3730 instr[20,16] = Vn
3731 instr[15,10] = 10 0111
3732 instr[9,5] = Vm
3733 instr[4.0] = Vd. */
3734
3735 unsigned vm = INSTR (20, 16);
3736 unsigned vn = INSTR (9, 5);
3737 unsigned vd = INSTR (4, 0);
3738 unsigned i;
3739 int full = INSTR (30, 30);
3740 int bias = 0;
3741
3742 NYI_assert (29, 24, 0x0E);
3743 NYI_assert (21, 21, 1);
3744 NYI_assert (15, 10, 0x27);
3745
3746 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
3747 switch (INSTR (23, 22))
3748 {
3749 case 0:
3750 DO_VEC_WIDENING_MUL (full ? 16 : 8, uint16_t, u8, u16);
3751 return;
3752
3753 case 1:
3754 DO_VEC_WIDENING_MUL (full ? 8 : 4, uint32_t, u16, u32);
3755 return;
3756
3757 case 2:
3758 DO_VEC_WIDENING_MUL (full ? 4 : 2, uint64_t, u32, u64);
3759 return;
3760
3761 case 3:
3762 HALT_UNALLOC;
3763 }
3764 }
3765
3766 static void
3767 do_vec_MLA (sim_cpu *cpu)
3768 {
3769 /* instr[31] = 0
3770 instr[30] = full/half selector
3771 instr[29,24] = 00 1110
3772 instr[23,22] = size: 00=> 8-bit, 01=> 16-bit, 10=> 32-bit
3773 instr[21] = 1
3774 instr[20,16] = Vn
3775 instr[15,10] = 1001 01
3776 instr[9,5] = Vm
3777 instr[4.0] = Vd. */
3778
3779 unsigned vm = INSTR (20, 16);
3780 unsigned vn = INSTR (9, 5);
3781 unsigned vd = INSTR (4, 0);
3782 unsigned i;
3783 int full = INSTR (30, 30);
3784
3785 NYI_assert (29, 24, 0x0E);
3786 NYI_assert (21, 21, 1);
3787 NYI_assert (15, 10, 0x25);
3788
3789 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
3790 switch (INSTR (23, 22))
3791 {
3792 case 0:
3793 {
3794 uint16_t a[16], b[16];
3795
3796 for (i = 0; i < (full ? 16 : 8); i++)
3797 {
3798 a[i] = aarch64_get_vec_u8 (cpu, vn, i);
3799 b[i] = aarch64_get_vec_u8 (cpu, vm, i);
3800 }
3801
3802 for (i = 0; i < (full ? 16 : 8); i++)
3803 {
3804 uint16_t v = aarch64_get_vec_u8 (cpu, vd, i);
3805
3806 aarch64_set_vec_u16 (cpu, vd, i, v + (a[i] * b[i]));
3807 }
3808 }
3809 return;
3810
3811 case 1:
3812 {
3813 uint32_t a[8], b[8];
3814
3815 for (i = 0; i < (full ? 8 : 4); i++)
3816 {
3817 a[i] = aarch64_get_vec_u16 (cpu, vn, i);
3818 b[i] = aarch64_get_vec_u16 (cpu, vm, i);
3819 }
3820
3821 for (i = 0; i < (full ? 8 : 4); i++)
3822 {
3823 uint32_t v = aarch64_get_vec_u16 (cpu, vd, i);
3824
3825 aarch64_set_vec_u32 (cpu, vd, i, v + (a[i] * b[i]));
3826 }
3827 }
3828 return;
3829
3830 case 2:
3831 {
3832 uint64_t a[4], b[4];
3833
3834 for (i = 0; i < (full ? 4 : 2); i++)
3835 {
3836 a[i] = aarch64_get_vec_u32 (cpu, vn, i);
3837 b[i] = aarch64_get_vec_u32 (cpu, vm, i);
3838 }
3839
3840 for (i = 0; i < (full ? 4 : 2); i++)
3841 {
3842 uint64_t v = aarch64_get_vec_u32 (cpu, vd, i);
3843
3844 aarch64_set_vec_u64 (cpu, vd, i, v + (a[i] * b[i]));
3845 }
3846 }
3847 return;
3848
3849 case 3:
3850 HALT_UNALLOC;
3851 }
3852 }
3853
3854 static float
3855 fmaxnm (float a, float b)
3856 {
3857 if (fpclassify (a) == FP_NORMAL)
3858 {
3859 if (fpclassify (b) == FP_NORMAL)
3860 return a > b ? a : b;
3861 return a;
3862 }
3863 else if (fpclassify (b) == FP_NORMAL)
3864 return b;
3865 return a;
3866 }
3867
3868 static float
3869 fminnm (float a, float b)
3870 {
3871 if (fpclassify (a) == FP_NORMAL)
3872 {
3873 if (fpclassify (b) == FP_NORMAL)
3874 return a < b ? a : b;
3875 return a;
3876 }
3877 else if (fpclassify (b) == FP_NORMAL)
3878 return b;
3879 return a;
3880 }
3881
3882 static double
3883 dmaxnm (double a, double b)
3884 {
3885 if (fpclassify (a) == FP_NORMAL)
3886 {
3887 if (fpclassify (b) == FP_NORMAL)
3888 return a > b ? a : b;
3889 return a;
3890 }
3891 else if (fpclassify (b) == FP_NORMAL)
3892 return b;
3893 return a;
3894 }
3895
3896 static double
3897 dminnm (double a, double b)
3898 {
3899 if (fpclassify (a) == FP_NORMAL)
3900 {
3901 if (fpclassify (b) == FP_NORMAL)
3902 return a < b ? a : b;
3903 return a;
3904 }
3905 else if (fpclassify (b) == FP_NORMAL)
3906 return b;
3907 return a;
3908 }
3909
3910 static void
3911 do_vec_FminmaxNMP (sim_cpu *cpu)
3912 {
3913 /* instr [31] = 0
3914 instr [30] = half (0)/full (1)
3915 instr [29,24] = 10 1110
3916 instr [23] = max(0)/min(1)
3917 instr [22] = float (0)/double (1)
3918 instr [21] = 1
3919 instr [20,16] = Vn
3920 instr [15,10] = 1100 01
3921 instr [9,5] = Vm
3922 instr [4.0] = Vd. */
3923
3924 unsigned vm = INSTR (20, 16);
3925 unsigned vn = INSTR (9, 5);
3926 unsigned vd = INSTR (4, 0);
3927 int full = INSTR (30, 30);
3928
3929 NYI_assert (29, 24, 0x2E);
3930 NYI_assert (21, 21, 1);
3931 NYI_assert (15, 10, 0x31);
3932
3933 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
3934 if (INSTR (22, 22))
3935 {
3936 double (* fn)(double, double) = INSTR (23, 23)
3937 ? dminnm : dmaxnm;
3938
3939 if (! full)
3940 HALT_NYI;
3941 aarch64_set_vec_double (cpu, vd, 0,
3942 fn (aarch64_get_vec_double (cpu, vn, 0),
3943 aarch64_get_vec_double (cpu, vn, 1)));
3944 aarch64_set_vec_double (cpu, vd, 0,
3945 fn (aarch64_get_vec_double (cpu, vm, 0),
3946 aarch64_get_vec_double (cpu, vm, 1)));
3947 }
3948 else
3949 {
3950 float (* fn)(float, float) = INSTR (23, 23)
3951 ? fminnm : fmaxnm;
3952
3953 aarch64_set_vec_float (cpu, vd, 0,
3954 fn (aarch64_get_vec_float (cpu, vn, 0),
3955 aarch64_get_vec_float (cpu, vn, 1)));
3956 if (full)
3957 aarch64_set_vec_float (cpu, vd, 1,
3958 fn (aarch64_get_vec_float (cpu, vn, 2),
3959 aarch64_get_vec_float (cpu, vn, 3)));
3960
3961 aarch64_set_vec_float (cpu, vd, (full ? 2 : 1),
3962 fn (aarch64_get_vec_float (cpu, vm, 0),
3963 aarch64_get_vec_float (cpu, vm, 1)));
3964 if (full)
3965 aarch64_set_vec_float (cpu, vd, 3,
3966 fn (aarch64_get_vec_float (cpu, vm, 2),
3967 aarch64_get_vec_float (cpu, vm, 3)));
3968 }
3969 }
3970
3971 static void
3972 do_vec_AND (sim_cpu *cpu)
3973 {
3974 /* instr[31] = 0
3975 instr[30] = half (0)/full (1)
3976 instr[29,21] = 001110001
3977 instr[20,16] = Vm
3978 instr[15,10] = 000111
3979 instr[9,5] = Vn
3980 instr[4.0] = Vd. */
3981
3982 unsigned vm = INSTR (20, 16);
3983 unsigned vn = INSTR (9, 5);
3984 unsigned vd = INSTR (4, 0);
3985 unsigned i;
3986 int full = INSTR (30, 30);
3987
3988 NYI_assert (29, 21, 0x071);
3989 NYI_assert (15, 10, 0x07);
3990
3991 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
3992 for (i = 0; i < (full ? 4 : 2); i++)
3993 aarch64_set_vec_u32 (cpu, vd, i,
3994 aarch64_get_vec_u32 (cpu, vn, i)
3995 & aarch64_get_vec_u32 (cpu, vm, i));
3996 }
3997
3998 static void
3999 do_vec_BSL (sim_cpu *cpu)
4000 {
4001 /* instr[31] = 0
4002 instr[30] = half (0)/full (1)
4003 instr[29,21] = 101110011
4004 instr[20,16] = Vm
4005 instr[15,10] = 000111
4006 instr[9,5] = Vn
4007 instr[4.0] = Vd. */
4008
4009 unsigned vm = INSTR (20, 16);
4010 unsigned vn = INSTR (9, 5);
4011 unsigned vd = INSTR (4, 0);
4012 unsigned i;
4013 int full = INSTR (30, 30);
4014
4015 NYI_assert (29, 21, 0x173);
4016 NYI_assert (15, 10, 0x07);
4017
4018 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
4019 for (i = 0; i < (full ? 16 : 8); i++)
4020 aarch64_set_vec_u8 (cpu, vd, i,
4021 ( aarch64_get_vec_u8 (cpu, vd, i)
4022 & aarch64_get_vec_u8 (cpu, vn, i))
4023 | ((~ aarch64_get_vec_u8 (cpu, vd, i))
4024 & aarch64_get_vec_u8 (cpu, vm, i)));
4025 }
4026
4027 static void
4028 do_vec_EOR (sim_cpu *cpu)
4029 {
4030 /* instr[31] = 0
4031 instr[30] = half (0)/full (1)
4032 instr[29,21] = 10 1110 001
4033 instr[20,16] = Vm
4034 instr[15,10] = 000111
4035 instr[9,5] = Vn
4036 instr[4.0] = Vd. */
4037
4038 unsigned vm = INSTR (20, 16);
4039 unsigned vn = INSTR (9, 5);
4040 unsigned vd = INSTR (4, 0);
4041 unsigned i;
4042 int full = INSTR (30, 30);
4043
4044 NYI_assert (29, 21, 0x171);
4045 NYI_assert (15, 10, 0x07);
4046
4047 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
4048 for (i = 0; i < (full ? 4 : 2); i++)
4049 aarch64_set_vec_u32 (cpu, vd, i,
4050 aarch64_get_vec_u32 (cpu, vn, i)
4051 ^ aarch64_get_vec_u32 (cpu, vm, i));
4052 }
4053
4054 static void
4055 do_vec_bit (sim_cpu *cpu)
4056 {
4057 /* instr[31] = 0
4058 instr[30] = half (0)/full (1)
4059 instr[29,23] = 10 1110 1
4060 instr[22] = BIT (0) / BIF (1)
4061 instr[21] = 1
4062 instr[20,16] = Vm
4063 instr[15,10] = 0001 11
4064 instr[9,5] = Vn
4065 instr[4.0] = Vd. */
4066
4067 unsigned vm = INSTR (20, 16);
4068 unsigned vn = INSTR (9, 5);
4069 unsigned vd = INSTR (4, 0);
4070 unsigned full = INSTR (30, 30);
4071 unsigned test_false = INSTR (22, 22);
4072 unsigned i;
4073
4074 NYI_assert (29, 23, 0x5D);
4075 NYI_assert (21, 21, 1);
4076 NYI_assert (15, 10, 0x07);
4077
4078 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
4079 if (test_false)
4080 {
4081 for (i = 0; i < (full ? 16 : 8); i++)
4082 if (aarch64_get_vec_u32 (cpu, vn, i) == 0)
4083 aarch64_set_vec_u32 (cpu, vd, i, aarch64_get_vec_u32 (cpu, vm, i));
4084 }
4085 else
4086 {
4087 for (i = 0; i < (full ? 16 : 8); i++)
4088 if (aarch64_get_vec_u32 (cpu, vn, i) != 0)
4089 aarch64_set_vec_u32 (cpu, vd, i, aarch64_get_vec_u32 (cpu, vm, i));
4090 }
4091 }
4092
4093 static void
4094 do_vec_ORN (sim_cpu *cpu)
4095 {
4096 /* instr[31] = 0
4097 instr[30] = half (0)/full (1)
4098 instr[29,21] = 00 1110 111
4099 instr[20,16] = Vm
4100 instr[15,10] = 00 0111
4101 instr[9,5] = Vn
4102 instr[4.0] = Vd. */
4103
4104 unsigned vm = INSTR (20, 16);
4105 unsigned vn = INSTR (9, 5);
4106 unsigned vd = INSTR (4, 0);
4107 unsigned i;
4108 int full = INSTR (30, 30);
4109
4110 NYI_assert (29, 21, 0x077);
4111 NYI_assert (15, 10, 0x07);
4112
4113 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
4114 for (i = 0; i < (full ? 16 : 8); i++)
4115 aarch64_set_vec_u8 (cpu, vd, i,
4116 aarch64_get_vec_u8 (cpu, vn, i)
4117 | ~ aarch64_get_vec_u8 (cpu, vm, i));
4118 }
4119
4120 static void
4121 do_vec_ORR (sim_cpu *cpu)
4122 {
4123 /* instr[31] = 0
4124 instr[30] = half (0)/full (1)
4125 instr[29,21] = 00 1110 101
4126 instr[20,16] = Vm
4127 instr[15,10] = 0001 11
4128 instr[9,5] = Vn
4129 instr[4.0] = Vd. */
4130
4131 unsigned vm = INSTR (20, 16);
4132 unsigned vn = INSTR (9, 5);
4133 unsigned vd = INSTR (4, 0);
4134 unsigned i;
4135 int full = INSTR (30, 30);
4136
4137 NYI_assert (29, 21, 0x075);
4138 NYI_assert (15, 10, 0x07);
4139
4140 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
4141 for (i = 0; i < (full ? 16 : 8); i++)
4142 aarch64_set_vec_u8 (cpu, vd, i,
4143 aarch64_get_vec_u8 (cpu, vn, i)
4144 | aarch64_get_vec_u8 (cpu, vm, i));
4145 }
4146
4147 static void
4148 do_vec_BIC (sim_cpu *cpu)
4149 {
4150 /* instr[31] = 0
4151 instr[30] = half (0)/full (1)
4152 instr[29,21] = 00 1110 011
4153 instr[20,16] = Vm
4154 instr[15,10] = 00 0111
4155 instr[9,5] = Vn
4156 instr[4.0] = Vd. */
4157
4158 unsigned vm = INSTR (20, 16);
4159 unsigned vn = INSTR (9, 5);
4160 unsigned vd = INSTR (4, 0);
4161 unsigned i;
4162 int full = INSTR (30, 30);
4163
4164 NYI_assert (29, 21, 0x073);
4165 NYI_assert (15, 10, 0x07);
4166
4167 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
4168 for (i = 0; i < (full ? 16 : 8); i++)
4169 aarch64_set_vec_u8 (cpu, vd, i,
4170 aarch64_get_vec_u8 (cpu, vn, i)
4171 & ~ aarch64_get_vec_u8 (cpu, vm, i));
4172 }
4173
4174 static void
4175 do_vec_XTN (sim_cpu *cpu)
4176 {
4177 /* instr[31] = 0
4178 instr[30] = first part (0)/ second part (1)
4179 instr[29,24] = 00 1110
4180 instr[23,22] = size: byte(00), half(01), word (10)
4181 instr[21,10] = 1000 0100 1010
4182 instr[9,5] = Vs
4183 instr[4,0] = Vd. */
4184
4185 unsigned vs = INSTR (9, 5);
4186 unsigned vd = INSTR (4, 0);
4187 unsigned bias = INSTR (30, 30);
4188 unsigned i;
4189
4190 NYI_assert (29, 24, 0x0E);
4191 NYI_assert (21, 10, 0x84A);
4192
4193 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
4194 switch (INSTR (23, 22))
4195 {
4196 case 0:
4197 if (bias)
4198 for (i = 0; i < 8; i++)
4199 aarch64_set_vec_u8 (cpu, vd, i + 8,
4200 aarch64_get_vec_u16 (cpu, vs, i) >> 8);
4201 else
4202 for (i = 0; i < 8; i++)
4203 aarch64_set_vec_u8 (cpu, vd, i, aarch64_get_vec_u16 (cpu, vs, i));
4204 return;
4205
4206 case 1:
4207 if (bias)
4208 for (i = 0; i < 4; i++)
4209 aarch64_set_vec_u16 (cpu, vd, i + 4,
4210 aarch64_get_vec_u32 (cpu, vs, i) >> 16);
4211 else
4212 for (i = 0; i < 4; i++)
4213 aarch64_set_vec_u16 (cpu, vd, i, aarch64_get_vec_u32 (cpu, vs, i));
4214 return;
4215
4216 case 2:
4217 if (bias)
4218 for (i = 0; i < 2; i++)
4219 aarch64_set_vec_u32 (cpu, vd, i + 4,
4220 aarch64_get_vec_u64 (cpu, vs, i) >> 32);
4221 else
4222 for (i = 0; i < 2; i++)
4223 aarch64_set_vec_u32 (cpu, vd, i, aarch64_get_vec_u64 (cpu, vs, i));
4224 return;
4225 }
4226 }
4227
4228 static void
4229 do_vec_maxv (sim_cpu *cpu)
4230 {
4231 /* instr[31] = 0
4232 instr[30] = half(0)/full(1)
4233 instr[29] = signed (0)/unsigned(1)
4234 instr[28,24] = 0 1110
4235 instr[23,22] = size: byte(00), half(01), word (10)
4236 instr[21] = 1
4237 instr[20,17] = 1 000
4238 instr[16] = max(0)/min(1)
4239 instr[15,10] = 1010 10
4240 instr[9,5] = V source
4241 instr[4.0] = R dest. */
4242
4243 unsigned vs = INSTR (9, 5);
4244 unsigned rd = INSTR (4, 0);
4245 unsigned full = INSTR (30, 30);
4246 unsigned i;
4247
4248 NYI_assert (28, 24, 0x0E);
4249 NYI_assert (21, 21, 1);
4250 NYI_assert (20, 17, 8);
4251 NYI_assert (15, 10, 0x2A);
4252
4253 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
4254 switch ((INSTR (29, 29) << 1) | INSTR (16, 16))
4255 {
4256 case 0: /* SMAXV. */
4257 {
4258 int64_t smax;
4259 switch (INSTR (23, 22))
4260 {
4261 case 0:
4262 smax = aarch64_get_vec_s8 (cpu, vs, 0);
4263 for (i = 1; i < (full ? 16 : 8); i++)
4264 smax = max (smax, aarch64_get_vec_s8 (cpu, vs, i));
4265 break;
4266 case 1:
4267 smax = aarch64_get_vec_s16 (cpu, vs, 0);
4268 for (i = 1; i < (full ? 8 : 4); i++)
4269 smax = max (smax, aarch64_get_vec_s16 (cpu, vs, i));
4270 break;
4271 case 2:
4272 smax = aarch64_get_vec_s32 (cpu, vs, 0);
4273 for (i = 1; i < (full ? 4 : 2); i++)
4274 smax = max (smax, aarch64_get_vec_s32 (cpu, vs, i));
4275 break;
4276 case 3:
4277 HALT_UNALLOC;
4278 }
4279 aarch64_set_reg_s64 (cpu, rd, NO_SP, smax);
4280 return;
4281 }
4282
4283 case 1: /* SMINV. */
4284 {
4285 int64_t smin;
4286 switch (INSTR (23, 22))
4287 {
4288 case 0:
4289 smin = aarch64_get_vec_s8 (cpu, vs, 0);
4290 for (i = 1; i < (full ? 16 : 8); i++)
4291 smin = min (smin, aarch64_get_vec_s8 (cpu, vs, i));
4292 break;
4293 case 1:
4294 smin = aarch64_get_vec_s16 (cpu, vs, 0);
4295 for (i = 1; i < (full ? 8 : 4); i++)
4296 smin = min (smin, aarch64_get_vec_s16 (cpu, vs, i));
4297 break;
4298 case 2:
4299 smin = aarch64_get_vec_s32 (cpu, vs, 0);
4300 for (i = 1; i < (full ? 4 : 2); i++)
4301 smin = min (smin, aarch64_get_vec_s32 (cpu, vs, i));
4302 break;
4303
4304 case 3:
4305 HALT_UNALLOC;
4306 }
4307 aarch64_set_reg_s64 (cpu, rd, NO_SP, smin);
4308 return;
4309 }
4310
4311 case 2: /* UMAXV. */
4312 {
4313 uint64_t umax;
4314 switch (INSTR (23, 22))
4315 {
4316 case 0:
4317 umax = aarch64_get_vec_u8 (cpu, vs, 0);
4318 for (i = 1; i < (full ? 16 : 8); i++)
4319 umax = max (umax, aarch64_get_vec_u8 (cpu, vs, i));
4320 break;
4321 case 1:
4322 umax = aarch64_get_vec_u16 (cpu, vs, 0);
4323 for (i = 1; i < (full ? 8 : 4); i++)
4324 umax = max (umax, aarch64_get_vec_u16 (cpu, vs, i));
4325 break;
4326 case 2:
4327 umax = aarch64_get_vec_u32 (cpu, vs, 0);
4328 for (i = 1; i < (full ? 4 : 2); i++)
4329 umax = max (umax, aarch64_get_vec_u32 (cpu, vs, i));
4330 break;
4331
4332 case 3:
4333 HALT_UNALLOC;
4334 }
4335 aarch64_set_reg_u64 (cpu, rd, NO_SP, umax);
4336 return;
4337 }
4338
4339 case 3: /* UMINV. */
4340 {
4341 uint64_t umin;
4342 switch (INSTR (23, 22))
4343 {
4344 case 0:
4345 umin = aarch64_get_vec_u8 (cpu, vs, 0);
4346 for (i = 1; i < (full ? 16 : 8); i++)
4347 umin = min (umin, aarch64_get_vec_u8 (cpu, vs, i));
4348 break;
4349 case 1:
4350 umin = aarch64_get_vec_u16 (cpu, vs, 0);
4351 for (i = 1; i < (full ? 8 : 4); i++)
4352 umin = min (umin, aarch64_get_vec_u16 (cpu, vs, i));
4353 break;
4354 case 2:
4355 umin = aarch64_get_vec_u32 (cpu, vs, 0);
4356 for (i = 1; i < (full ? 4 : 2); i++)
4357 umin = min (umin, aarch64_get_vec_u32 (cpu, vs, i));
4358 break;
4359
4360 case 3:
4361 HALT_UNALLOC;
4362 }
4363 aarch64_set_reg_u64 (cpu, rd, NO_SP, umin);
4364 return;
4365 }
4366 }
4367 }
4368
4369 static void
4370 do_vec_fminmaxV (sim_cpu *cpu)
4371 {
4372 /* instr[31,24] = 0110 1110
4373 instr[23] = max(0)/min(1)
4374 instr[22,14] = 011 0000 11
4375 instr[13,12] = nm(00)/normal(11)
4376 instr[11,10] = 10
4377 instr[9,5] = V source
4378 instr[4.0] = R dest. */
4379
4380 unsigned vs = INSTR (9, 5);
4381 unsigned rd = INSTR (4, 0);
4382 unsigned i;
4383 float res = aarch64_get_vec_float (cpu, vs, 0);
4384
4385 NYI_assert (31, 24, 0x6E);
4386 NYI_assert (22, 14, 0x0C3);
4387 NYI_assert (11, 10, 2);
4388
4389 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
4390 if (INSTR (23, 23))
4391 {
4392 switch (INSTR (13, 12))
4393 {
4394 case 0: /* FMNINNMV. */
4395 for (i = 1; i < 4; i++)
4396 res = fminnm (res, aarch64_get_vec_float (cpu, vs, i));
4397 break;
4398
4399 case 3: /* FMINV. */
4400 for (i = 1; i < 4; i++)
4401 res = min (res, aarch64_get_vec_float (cpu, vs, i));
4402 break;
4403
4404 default:
4405 HALT_NYI;
4406 }
4407 }
4408 else
4409 {
4410 switch (INSTR (13, 12))
4411 {
4412 case 0: /* FMNAXNMV. */
4413 for (i = 1; i < 4; i++)
4414 res = fmaxnm (res, aarch64_get_vec_float (cpu, vs, i));
4415 break;
4416
4417 case 3: /* FMAXV. */
4418 for (i = 1; i < 4; i++)
4419 res = max (res, aarch64_get_vec_float (cpu, vs, i));
4420 break;
4421
4422 default:
4423 HALT_NYI;
4424 }
4425 }
4426
4427 aarch64_set_FP_float (cpu, rd, res);
4428 }
4429
4430 static void
4431 do_vec_Fminmax (sim_cpu *cpu)
4432 {
4433 /* instr[31] = 0
4434 instr[30] = half(0)/full(1)
4435 instr[29,24] = 00 1110
4436 instr[23] = max(0)/min(1)
4437 instr[22] = float(0)/double(1)
4438 instr[21] = 1
4439 instr[20,16] = Vm
4440 instr[15,14] = 11
4441 instr[13,12] = nm(00)/normal(11)
4442 instr[11,10] = 01
4443 instr[9,5] = Vn
4444 instr[4,0] = Vd. */
4445
4446 unsigned vm = INSTR (20, 16);
4447 unsigned vn = INSTR (9, 5);
4448 unsigned vd = INSTR (4, 0);
4449 unsigned full = INSTR (30, 30);
4450 unsigned min = INSTR (23, 23);
4451 unsigned i;
4452
4453 NYI_assert (29, 24, 0x0E);
4454 NYI_assert (21, 21, 1);
4455 NYI_assert (15, 14, 3);
4456 NYI_assert (11, 10, 1);
4457
4458 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
4459 if (INSTR (22, 22))
4460 {
4461 double (* func)(double, double);
4462
4463 if (! full)
4464 HALT_NYI;
4465
4466 if (INSTR (13, 12) == 0)
4467 func = min ? dminnm : dmaxnm;
4468 else if (INSTR (13, 12) == 3)
4469 func = min ? fmin : fmax;
4470 else
4471 HALT_NYI;
4472
4473 for (i = 0; i < 2; i++)
4474 aarch64_set_vec_double (cpu, vd, i,
4475 func (aarch64_get_vec_double (cpu, vn, i),
4476 aarch64_get_vec_double (cpu, vm, i)));
4477 }
4478 else
4479 {
4480 float (* func)(float, float);
4481
4482 if (INSTR (13, 12) == 0)
4483 func = min ? fminnm : fmaxnm;
4484 else if (INSTR (13, 12) == 3)
4485 func = min ? fminf : fmaxf;
4486 else
4487 HALT_NYI;
4488
4489 for (i = 0; i < (full ? 4 : 2); i++)
4490 aarch64_set_vec_float (cpu, vd, i,
4491 func (aarch64_get_vec_float (cpu, vn, i),
4492 aarch64_get_vec_float (cpu, vm, i)));
4493 }
4494 }
4495
4496 static void
4497 do_vec_SCVTF (sim_cpu *cpu)
4498 {
4499 /* instr[31] = 0
4500 instr[30] = Q
4501 instr[29,23] = 00 1110 0
4502 instr[22] = float(0)/double(1)
4503 instr[21,10] = 10 0001 1101 10
4504 instr[9,5] = Vn
4505 instr[4,0] = Vd. */
4506
4507 unsigned vn = INSTR (9, 5);
4508 unsigned vd = INSTR (4, 0);
4509 unsigned full = INSTR (30, 30);
4510 unsigned size = INSTR (22, 22);
4511 unsigned i;
4512
4513 NYI_assert (29, 23, 0x1C);
4514 NYI_assert (21, 10, 0x876);
4515
4516 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
4517 if (size)
4518 {
4519 if (! full)
4520 HALT_UNALLOC;
4521
4522 for (i = 0; i < 2; i++)
4523 {
4524 double val = (double) aarch64_get_vec_u64 (cpu, vn, i);
4525 aarch64_set_vec_double (cpu, vd, i, val);
4526 }
4527 }
4528 else
4529 {
4530 for (i = 0; i < (full ? 4 : 2); i++)
4531 {
4532 float val = (float) aarch64_get_vec_u32 (cpu, vn, i);
4533 aarch64_set_vec_float (cpu, vd, i, val);
4534 }
4535 }
4536 }
4537
4538 #define VEC_CMP(SOURCE, CMP) \
4539 do \
4540 { \
4541 switch (size) \
4542 { \
4543 case 0: \
4544 for (i = 0; i < (full ? 16 : 8); i++) \
4545 aarch64_set_vec_u8 (cpu, vd, i, \
4546 aarch64_get_vec_##SOURCE##8 (cpu, vn, i) \
4547 CMP \
4548 aarch64_get_vec_##SOURCE##8 (cpu, vm, i) \
4549 ? -1 : 0); \
4550 return; \
4551 case 1: \
4552 for (i = 0; i < (full ? 8 : 4); i++) \
4553 aarch64_set_vec_u16 (cpu, vd, i, \
4554 aarch64_get_vec_##SOURCE##16 (cpu, vn, i) \
4555 CMP \
4556 aarch64_get_vec_##SOURCE##16 (cpu, vm, i) \
4557 ? -1 : 0); \
4558 return; \
4559 case 2: \
4560 for (i = 0; i < (full ? 4 : 2); i++) \
4561 aarch64_set_vec_u32 (cpu, vd, i, \
4562 aarch64_get_vec_##SOURCE##32 (cpu, vn, i) \
4563 CMP \
4564 aarch64_get_vec_##SOURCE##32 (cpu, vm, i) \
4565 ? -1 : 0); \
4566 return; \
4567 case 3: \
4568 if (! full) \
4569 HALT_UNALLOC; \
4570 for (i = 0; i < 2; i++) \
4571 aarch64_set_vec_u64 (cpu, vd, i, \
4572 aarch64_get_vec_##SOURCE##64 (cpu, vn, i) \
4573 CMP \
4574 aarch64_get_vec_##SOURCE##64 (cpu, vm, i) \
4575 ? -1ULL : 0); \
4576 return; \
4577 } \
4578 } \
4579 while (0)
4580
4581 #define VEC_CMP0(SOURCE, CMP) \
4582 do \
4583 { \
4584 switch (size) \
4585 { \
4586 case 0: \
4587 for (i = 0; i < (full ? 16 : 8); i++) \
4588 aarch64_set_vec_u8 (cpu, vd, i, \
4589 aarch64_get_vec_##SOURCE##8 (cpu, vn, i) \
4590 CMP 0 ? -1 : 0); \
4591 return; \
4592 case 1: \
4593 for (i = 0; i < (full ? 8 : 4); i++) \
4594 aarch64_set_vec_u16 (cpu, vd, i, \
4595 aarch64_get_vec_##SOURCE##16 (cpu, vn, i) \
4596 CMP 0 ? -1 : 0); \
4597 return; \
4598 case 2: \
4599 for (i = 0; i < (full ? 4 : 2); i++) \
4600 aarch64_set_vec_u32 (cpu, vd, i, \
4601 aarch64_get_vec_##SOURCE##32 (cpu, vn, i) \
4602 CMP 0 ? -1 : 0); \
4603 return; \
4604 case 3: \
4605 if (! full) \
4606 HALT_UNALLOC; \
4607 for (i = 0; i < 2; i++) \
4608 aarch64_set_vec_u64 (cpu, vd, i, \
4609 aarch64_get_vec_##SOURCE##64 (cpu, vn, i) \
4610 CMP 0 ? -1ULL : 0); \
4611 return; \
4612 } \
4613 } \
4614 while (0)
4615
4616 #define VEC_FCMP0(CMP) \
4617 do \
4618 { \
4619 if (vm != 0) \
4620 HALT_NYI; \
4621 if (INSTR (22, 22)) \
4622 { \
4623 if (! full) \
4624 HALT_NYI; \
4625 for (i = 0; i < 2; i++) \
4626 aarch64_set_vec_u64 (cpu, vd, i, \
4627 aarch64_get_vec_double (cpu, vn, i) \
4628 CMP 0.0 ? -1 : 0); \
4629 } \
4630 else \
4631 { \
4632 for (i = 0; i < (full ? 4 : 2); i++) \
4633 aarch64_set_vec_u32 (cpu, vd, i, \
4634 aarch64_get_vec_float (cpu, vn, i) \
4635 CMP 0.0 ? -1 : 0); \
4636 } \
4637 return; \
4638 } \
4639 while (0)
4640
4641 #define VEC_FCMP(CMP) \
4642 do \
4643 { \
4644 if (INSTR (22, 22)) \
4645 { \
4646 if (! full) \
4647 HALT_NYI; \
4648 for (i = 0; i < 2; i++) \
4649 aarch64_set_vec_u64 (cpu, vd, i, \
4650 aarch64_get_vec_double (cpu, vn, i) \
4651 CMP \
4652 aarch64_get_vec_double (cpu, vm, i) \
4653 ? -1 : 0); \
4654 } \
4655 else \
4656 { \
4657 for (i = 0; i < (full ? 4 : 2); i++) \
4658 aarch64_set_vec_u32 (cpu, vd, i, \
4659 aarch64_get_vec_float (cpu, vn, i) \
4660 CMP \
4661 aarch64_get_vec_float (cpu, vm, i) \
4662 ? -1 : 0); \
4663 } \
4664 return; \
4665 } \
4666 while (0)
4667
4668 static void
4669 do_vec_compare (sim_cpu *cpu)
4670 {
4671 /* instr[31] = 0
4672 instr[30] = half(0)/full(1)
4673 instr[29] = part-of-comparison-type
4674 instr[28,24] = 0 1110
4675 instr[23,22] = size of integer compares: byte(00), half(01), word (10), long (11)
4676 type of float compares: single (-0) / double (-1)
4677 instr[21] = 1
4678 instr[20,16] = Vm or 00000 (compare vs 0)
4679 instr[15,10] = part-of-comparison-type
4680 instr[9,5] = Vn
4681 instr[4.0] = Vd. */
4682
4683 int full = INSTR (30, 30);
4684 int size = INSTR (23, 22);
4685 unsigned vm = INSTR (20, 16);
4686 unsigned vn = INSTR (9, 5);
4687 unsigned vd = INSTR (4, 0);
4688 unsigned i;
4689
4690 NYI_assert (28, 24, 0x0E);
4691 NYI_assert (21, 21, 1);
4692
4693 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
4694 if ((INSTR (11, 11)
4695 && INSTR (14, 14))
4696 || ((INSTR (11, 11) == 0
4697 && INSTR (10, 10) == 0)))
4698 {
4699 /* A compare vs 0. */
4700 if (vm != 0)
4701 {
4702 if (INSTR (15, 10) == 0x2A)
4703 do_vec_maxv (cpu);
4704 else if (INSTR (15, 10) == 0x32
4705 || INSTR (15, 10) == 0x3E)
4706 do_vec_fminmaxV (cpu);
4707 else if (INSTR (29, 23) == 0x1C
4708 && INSTR (21, 10) == 0x876)
4709 do_vec_SCVTF (cpu);
4710 else
4711 HALT_NYI;
4712 return;
4713 }
4714 }
4715
4716 if (INSTR (14, 14))
4717 {
4718 /* A floating point compare. */
4719 unsigned decode = (INSTR (29, 29) << 5) | (INSTR (23, 23) << 4)
4720 | INSTR (13, 10);
4721
4722 NYI_assert (15, 15, 1);
4723
4724 switch (decode)
4725 {
4726 case /* 0b010010: GT#0 */ 0x12: VEC_FCMP0 (>);
4727 case /* 0b110010: GE#0 */ 0x32: VEC_FCMP0 (>=);
4728 case /* 0b010110: EQ#0 */ 0x16: VEC_FCMP0 (==);
4729 case /* 0b110110: LE#0 */ 0x36: VEC_FCMP0 (<=);
4730 case /* 0b011010: LT#0 */ 0x1A: VEC_FCMP0 (<);
4731 case /* 0b111001: GT */ 0x39: VEC_FCMP (>);
4732 case /* 0b101001: GE */ 0x29: VEC_FCMP (>=);
4733 case /* 0b001001: EQ */ 0x09: VEC_FCMP (==);
4734
4735 default:
4736 HALT_NYI;
4737 }
4738 }
4739 else
4740 {
4741 unsigned decode = (INSTR (29, 29) << 6) | INSTR (15, 10);
4742
4743 switch (decode)
4744 {
4745 case 0x0D: /* 0001101 GT */ VEC_CMP (s, > );
4746 case 0x0F: /* 0001111 GE */ VEC_CMP (s, >= );
4747 case 0x22: /* 0100010 GT #0 */ VEC_CMP0 (s, > );
4748 case 0x26: /* 0100110 EQ #0 */ VEC_CMP0 (s, == );
4749 case 0x2A: /* 0101010 LT #0 */ VEC_CMP0 (s, < );
4750 case 0x4D: /* 1001101 HI */ VEC_CMP (u, > );
4751 case 0x4F: /* 1001111 HS */ VEC_CMP (u, >= );
4752 case 0x62: /* 1100010 GE #0 */ VEC_CMP0 (s, >= );
4753 case 0x63: /* 1100011 EQ */ VEC_CMP (u, == );
4754 case 0x66: /* 1100110 LE #0 */ VEC_CMP0 (s, <= );
4755 default:
4756 if (vm == 0)
4757 HALT_NYI;
4758 do_vec_maxv (cpu);
4759 }
4760 }
4761 }
4762
4763 static void
4764 do_vec_SSHL (sim_cpu *cpu)
4765 {
4766 /* instr[31] = 0
4767 instr[30] = first part (0)/ second part (1)
4768 instr[29,24] = 00 1110
4769 instr[23,22] = size: byte(00), half(01), word (10), long (11)
4770 instr[21] = 1
4771 instr[20,16] = Vm
4772 instr[15,10] = 0100 01
4773 instr[9,5] = Vn
4774 instr[4,0] = Vd. */
4775
4776 unsigned full = INSTR (30, 30);
4777 unsigned vm = INSTR (20, 16);
4778 unsigned vn = INSTR (9, 5);
4779 unsigned vd = INSTR (4, 0);
4780 unsigned i;
4781 signed int shift;
4782
4783 NYI_assert (29, 24, 0x0E);
4784 NYI_assert (21, 21, 1);
4785 NYI_assert (15, 10, 0x11);
4786
4787 /* FIXME: What is a signed shift left in this context ?. */
4788
4789 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
4790 switch (INSTR (23, 22))
4791 {
4792 case 0:
4793 for (i = 0; i < (full ? 16 : 8); i++)
4794 {
4795 shift = aarch64_get_vec_s8 (cpu, vm, i);
4796 if (shift >= 0)
4797 aarch64_set_vec_s8 (cpu, vd, i, aarch64_get_vec_s8 (cpu, vn, i)
4798 << shift);
4799 else
4800 aarch64_set_vec_s8 (cpu, vd, i, aarch64_get_vec_s8 (cpu, vn, i)
4801 >> - shift);
4802 }
4803 return;
4804
4805 case 1:
4806 for (i = 0; i < (full ? 8 : 4); i++)
4807 {
4808 shift = aarch64_get_vec_s8 (cpu, vm, i * 2);
4809 if (shift >= 0)
4810 aarch64_set_vec_s16 (cpu, vd, i, aarch64_get_vec_s16 (cpu, vn, i)
4811 << shift);
4812 else
4813 aarch64_set_vec_s16 (cpu, vd, i, aarch64_get_vec_s16 (cpu, vn, i)
4814 >> - shift);
4815 }
4816 return;
4817
4818 case 2:
4819 for (i = 0; i < (full ? 4 : 2); i++)
4820 {
4821 shift = aarch64_get_vec_s8 (cpu, vm, i * 4);
4822 if (shift >= 0)
4823 aarch64_set_vec_s32 (cpu, vd, i, aarch64_get_vec_s32 (cpu, vn, i)
4824 << shift);
4825 else
4826 aarch64_set_vec_s32 (cpu, vd, i, aarch64_get_vec_s32 (cpu, vn, i)
4827 >> - shift);
4828 }
4829 return;
4830
4831 case 3:
4832 if (! full)
4833 HALT_UNALLOC;
4834 for (i = 0; i < 2; i++)
4835 {
4836 shift = aarch64_get_vec_s8 (cpu, vm, i * 8);
4837 if (shift >= 0)
4838 aarch64_set_vec_s64 (cpu, vd, i, aarch64_get_vec_s64 (cpu, vn, i)
4839 << shift);
4840 else
4841 aarch64_set_vec_s64 (cpu, vd, i, aarch64_get_vec_s64 (cpu, vn, i)
4842 >> - shift);
4843 }
4844 return;
4845 }
4846 }
4847
4848 static void
4849 do_vec_USHL (sim_cpu *cpu)
4850 {
4851 /* instr[31] = 0
4852 instr[30] = first part (0)/ second part (1)
4853 instr[29,24] = 10 1110
4854 instr[23,22] = size: byte(00), half(01), word (10), long (11)
4855 instr[21] = 1
4856 instr[20,16] = Vm
4857 instr[15,10] = 0100 01
4858 instr[9,5] = Vn
4859 instr[4,0] = Vd */
4860
4861 unsigned full = INSTR (30, 30);
4862 unsigned vm = INSTR (20, 16);
4863 unsigned vn = INSTR (9, 5);
4864 unsigned vd = INSTR (4, 0);
4865 unsigned i;
4866 signed int shift;
4867
4868 NYI_assert (29, 24, 0x2E);
4869 NYI_assert (15, 10, 0x11);
4870
4871 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
4872 switch (INSTR (23, 22))
4873 {
4874 case 0:
4875 for (i = 0; i < (full ? 16 : 8); i++)
4876 {
4877 shift = aarch64_get_vec_s8 (cpu, vm, i);
4878 if (shift >= 0)
4879 aarch64_set_vec_u8 (cpu, vd, i, aarch64_get_vec_u8 (cpu, vn, i)
4880 << shift);
4881 else
4882 aarch64_set_vec_u8 (cpu, vd, i, aarch64_get_vec_u8 (cpu, vn, i)
4883 >> - shift);
4884 }
4885 return;
4886
4887 case 1:
4888 for (i = 0; i < (full ? 8 : 4); i++)
4889 {
4890 shift = aarch64_get_vec_s8 (cpu, vm, i * 2);
4891 if (shift >= 0)
4892 aarch64_set_vec_u16 (cpu, vd, i, aarch64_get_vec_u16 (cpu, vn, i)
4893 << shift);
4894 else
4895 aarch64_set_vec_u16 (cpu, vd, i, aarch64_get_vec_u16 (cpu, vn, i)
4896 >> - shift);
4897 }
4898 return;
4899
4900 case 2:
4901 for (i = 0; i < (full ? 4 : 2); i++)
4902 {
4903 shift = aarch64_get_vec_s8 (cpu, vm, i * 4);
4904 if (shift >= 0)
4905 aarch64_set_vec_u32 (cpu, vd, i, aarch64_get_vec_u32 (cpu, vn, i)
4906 << shift);
4907 else
4908 aarch64_set_vec_u32 (cpu, vd, i, aarch64_get_vec_u32 (cpu, vn, i)
4909 >> - shift);
4910 }
4911 return;
4912
4913 case 3:
4914 if (! full)
4915 HALT_UNALLOC;
4916 for (i = 0; i < 2; i++)
4917 {
4918 shift = aarch64_get_vec_s8 (cpu, vm, i * 8);
4919 if (shift >= 0)
4920 aarch64_set_vec_u64 (cpu, vd, i, aarch64_get_vec_u64 (cpu, vn, i)
4921 << shift);
4922 else
4923 aarch64_set_vec_u64 (cpu, vd, i, aarch64_get_vec_u64 (cpu, vn, i)
4924 >> - shift);
4925 }
4926 return;
4927 }
4928 }
4929
4930 static void
4931 do_vec_FMLA (sim_cpu *cpu)
4932 {
4933 /* instr[31] = 0
4934 instr[30] = full/half selector
4935 instr[29,23] = 0011100
4936 instr[22] = size: 0=>float, 1=>double
4937 instr[21] = 1
4938 instr[20,16] = Vn
4939 instr[15,10] = 1100 11
4940 instr[9,5] = Vm
4941 instr[4.0] = Vd. */
4942
4943 unsigned vm = INSTR (20, 16);
4944 unsigned vn = INSTR (9, 5);
4945 unsigned vd = INSTR (4, 0);
4946 unsigned i;
4947 int full = INSTR (30, 30);
4948
4949 NYI_assert (29, 23, 0x1C);
4950 NYI_assert (21, 21, 1);
4951 NYI_assert (15, 10, 0x33);
4952
4953 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
4954 if (INSTR (22, 22))
4955 {
4956 if (! full)
4957 HALT_UNALLOC;
4958 for (i = 0; i < 2; i++)
4959 aarch64_set_vec_double (cpu, vd, i,
4960 aarch64_get_vec_double (cpu, vn, i) *
4961 aarch64_get_vec_double (cpu, vm, i) +
4962 aarch64_get_vec_double (cpu, vd, i));
4963 }
4964 else
4965 {
4966 for (i = 0; i < (full ? 4 : 2); i++)
4967 aarch64_set_vec_float (cpu, vd, i,
4968 aarch64_get_vec_float (cpu, vn, i) *
4969 aarch64_get_vec_float (cpu, vm, i) +
4970 aarch64_get_vec_float (cpu, vd, i));
4971 }
4972 }
4973
4974 static void
4975 do_vec_max (sim_cpu *cpu)
4976 {
4977 /* instr[31] = 0
4978 instr[30] = full/half selector
4979 instr[29] = SMAX (0) / UMAX (1)
4980 instr[28,24] = 0 1110
4981 instr[23,22] = size: 00=> 8-bit, 01=> 16-bit, 10=> 32-bit
4982 instr[21] = 1
4983 instr[20,16] = Vn
4984 instr[15,10] = 0110 01
4985 instr[9,5] = Vm
4986 instr[4.0] = Vd. */
4987
4988 unsigned vm = INSTR (20, 16);
4989 unsigned vn = INSTR (9, 5);
4990 unsigned vd = INSTR (4, 0);
4991 unsigned i;
4992 int full = INSTR (30, 30);
4993
4994 NYI_assert (28, 24, 0x0E);
4995 NYI_assert (21, 21, 1);
4996 NYI_assert (15, 10, 0x19);
4997
4998 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
4999 if (INSTR (29, 29))
5000 {
5001 switch (INSTR (23, 22))
5002 {
5003 case 0:
5004 for (i = 0; i < (full ? 16 : 8); i++)
5005 aarch64_set_vec_u8 (cpu, vd, i,
5006 aarch64_get_vec_u8 (cpu, vn, i)
5007 > aarch64_get_vec_u8 (cpu, vm, i)
5008 ? aarch64_get_vec_u8 (cpu, vn, i)
5009 : aarch64_get_vec_u8 (cpu, vm, i));
5010 return;
5011
5012 case 1:
5013 for (i = 0; i < (full ? 8 : 4); i++)
5014 aarch64_set_vec_u16 (cpu, vd, i,
5015 aarch64_get_vec_u16 (cpu, vn, i)
5016 > aarch64_get_vec_u16 (cpu, vm, i)
5017 ? aarch64_get_vec_u16 (cpu, vn, i)
5018 : aarch64_get_vec_u16 (cpu, vm, i));
5019 return;
5020
5021 case 2:
5022 for (i = 0; i < (full ? 4 : 2); i++)
5023 aarch64_set_vec_u32 (cpu, vd, i,
5024 aarch64_get_vec_u32 (cpu, vn, i)
5025 > aarch64_get_vec_u32 (cpu, vm, i)
5026 ? aarch64_get_vec_u32 (cpu, vn, i)
5027 : aarch64_get_vec_u32 (cpu, vm, i));
5028 return;
5029
5030 case 3:
5031 HALT_UNALLOC;
5032 }
5033 }
5034 else
5035 {
5036 switch (INSTR (23, 22))
5037 {
5038 case 0:
5039 for (i = 0; i < (full ? 16 : 8); i++)
5040 aarch64_set_vec_s8 (cpu, vd, i,
5041 aarch64_get_vec_s8 (cpu, vn, i)
5042 > aarch64_get_vec_s8 (cpu, vm, i)
5043 ? aarch64_get_vec_s8 (cpu, vn, i)
5044 : aarch64_get_vec_s8 (cpu, vm, i));
5045 return;
5046
5047 case 1:
5048 for (i = 0; i < (full ? 8 : 4); i++)
5049 aarch64_set_vec_s16 (cpu, vd, i,
5050 aarch64_get_vec_s16 (cpu, vn, i)
5051 > aarch64_get_vec_s16 (cpu, vm, i)
5052 ? aarch64_get_vec_s16 (cpu, vn, i)
5053 : aarch64_get_vec_s16 (cpu, vm, i));
5054 return;
5055
5056 case 2:
5057 for (i = 0; i < (full ? 4 : 2); i++)
5058 aarch64_set_vec_s32 (cpu, vd, i,
5059 aarch64_get_vec_s32 (cpu, vn, i)
5060 > aarch64_get_vec_s32 (cpu, vm, i)
5061 ? aarch64_get_vec_s32 (cpu, vn, i)
5062 : aarch64_get_vec_s32 (cpu, vm, i));
5063 return;
5064
5065 case 3:
5066 HALT_UNALLOC;
5067 }
5068 }
5069 }
5070
5071 static void
5072 do_vec_min (sim_cpu *cpu)
5073 {
5074 /* instr[31] = 0
5075 instr[30] = full/half selector
5076 instr[29] = SMIN (0) / UMIN (1)
5077 instr[28,24] = 0 1110
5078 instr[23,22] = size: 00=> 8-bit, 01=> 16-bit, 10=> 32-bit
5079 instr[21] = 1
5080 instr[20,16] = Vn
5081 instr[15,10] = 0110 11
5082 instr[9,5] = Vm
5083 instr[4.0] = Vd. */
5084
5085 unsigned vm = INSTR (20, 16);
5086 unsigned vn = INSTR (9, 5);
5087 unsigned vd = INSTR (4, 0);
5088 unsigned i;
5089 int full = INSTR (30, 30);
5090
5091 NYI_assert (28, 24, 0x0E);
5092 NYI_assert (21, 21, 1);
5093 NYI_assert (15, 10, 0x1B);
5094
5095 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
5096 if (INSTR (29, 29))
5097 {
5098 switch (INSTR (23, 22))
5099 {
5100 case 0:
5101 for (i = 0; i < (full ? 16 : 8); i++)
5102 aarch64_set_vec_u8 (cpu, vd, i,
5103 aarch64_get_vec_u8 (cpu, vn, i)
5104 < aarch64_get_vec_u8 (cpu, vm, i)
5105 ? aarch64_get_vec_u8 (cpu, vn, i)
5106 : aarch64_get_vec_u8 (cpu, vm, i));
5107 return;
5108
5109 case 1:
5110 for (i = 0; i < (full ? 8 : 4); i++)
5111 aarch64_set_vec_u16 (cpu, vd, i,
5112 aarch64_get_vec_u16 (cpu, vn, i)
5113 < aarch64_get_vec_u16 (cpu, vm, i)
5114 ? aarch64_get_vec_u16 (cpu, vn, i)
5115 : aarch64_get_vec_u16 (cpu, vm, i));
5116 return;
5117
5118 case 2:
5119 for (i = 0; i < (full ? 4 : 2); i++)
5120 aarch64_set_vec_u32 (cpu, vd, i,
5121 aarch64_get_vec_u32 (cpu, vn, i)
5122 < aarch64_get_vec_u32 (cpu, vm, i)
5123 ? aarch64_get_vec_u32 (cpu, vn, i)
5124 : aarch64_get_vec_u32 (cpu, vm, i));
5125 return;
5126
5127 case 3:
5128 HALT_UNALLOC;
5129 }
5130 }
5131 else
5132 {
5133 switch (INSTR (23, 22))
5134 {
5135 case 0:
5136 for (i = 0; i < (full ? 16 : 8); i++)
5137 aarch64_set_vec_s8 (cpu, vd, i,
5138 aarch64_get_vec_s8 (cpu, vn, i)
5139 < aarch64_get_vec_s8 (cpu, vm, i)
5140 ? aarch64_get_vec_s8 (cpu, vn, i)
5141 : aarch64_get_vec_s8 (cpu, vm, i));
5142 return;
5143
5144 case 1:
5145 for (i = 0; i < (full ? 8 : 4); i++)
5146 aarch64_set_vec_s16 (cpu, vd, i,
5147 aarch64_get_vec_s16 (cpu, vn, i)
5148 < aarch64_get_vec_s16 (cpu, vm, i)
5149 ? aarch64_get_vec_s16 (cpu, vn, i)
5150 : aarch64_get_vec_s16 (cpu, vm, i));
5151 return;
5152
5153 case 2:
5154 for (i = 0; i < (full ? 4 : 2); i++)
5155 aarch64_set_vec_s32 (cpu, vd, i,
5156 aarch64_get_vec_s32 (cpu, vn, i)
5157 < aarch64_get_vec_s32 (cpu, vm, i)
5158 ? aarch64_get_vec_s32 (cpu, vn, i)
5159 : aarch64_get_vec_s32 (cpu, vm, i));
5160 return;
5161
5162 case 3:
5163 HALT_UNALLOC;
5164 }
5165 }
5166 }
5167
5168 static void
5169 do_vec_sub_long (sim_cpu *cpu)
5170 {
5171 /* instr[31] = 0
5172 instr[30] = lower (0) / upper (1)
5173 instr[29] = signed (0) / unsigned (1)
5174 instr[28,24] = 0 1110
5175 instr[23,22] = size: bytes (00), half (01), word (10)
5176 instr[21] = 1
5177 insrt[20,16] = Vm
5178 instr[15,10] = 0010 00
5179 instr[9,5] = Vn
5180 instr[4,0] = V dest. */
5181
5182 unsigned size = INSTR (23, 22);
5183 unsigned vm = INSTR (20, 16);
5184 unsigned vn = INSTR (9, 5);
5185 unsigned vd = INSTR (4, 0);
5186 unsigned bias = 0;
5187 unsigned i;
5188
5189 NYI_assert (28, 24, 0x0E);
5190 NYI_assert (21, 21, 1);
5191 NYI_assert (15, 10, 0x08);
5192
5193 if (size == 3)
5194 HALT_UNALLOC;
5195
5196 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
5197 switch (INSTR (30, 29))
5198 {
5199 case 2: /* SSUBL2. */
5200 bias = 2;
5201 case 0: /* SSUBL. */
5202 switch (size)
5203 {
5204 case 0:
5205 bias *= 3;
5206 for (i = 0; i < 8; i++)
5207 aarch64_set_vec_s16 (cpu, vd, i,
5208 aarch64_get_vec_s8 (cpu, vn, i + bias)
5209 - aarch64_get_vec_s8 (cpu, vm, i + bias));
5210 break;
5211
5212 case 1:
5213 bias *= 2;
5214 for (i = 0; i < 4; i++)
5215 aarch64_set_vec_s32 (cpu, vd, i,
5216 aarch64_get_vec_s16 (cpu, vn, i + bias)
5217 - aarch64_get_vec_s16 (cpu, vm, i + bias));
5218 break;
5219
5220 case 2:
5221 for (i = 0; i < 2; i++)
5222 aarch64_set_vec_s64 (cpu, vd, i,
5223 aarch64_get_vec_s32 (cpu, vn, i + bias)
5224 - aarch64_get_vec_s32 (cpu, vm, i + bias));
5225 break;
5226
5227 default:
5228 HALT_UNALLOC;
5229 }
5230 break;
5231
5232 case 3: /* USUBL2. */
5233 bias = 2;
5234 case 1: /* USUBL. */
5235 switch (size)
5236 {
5237 case 0:
5238 bias *= 3;
5239 for (i = 0; i < 8; i++)
5240 aarch64_set_vec_u16 (cpu, vd, i,
5241 aarch64_get_vec_u8 (cpu, vn, i + bias)
5242 - aarch64_get_vec_u8 (cpu, vm, i + bias));
5243 break;
5244
5245 case 1:
5246 bias *= 2;
5247 for (i = 0; i < 4; i++)
5248 aarch64_set_vec_u32 (cpu, vd, i,
5249 aarch64_get_vec_u16 (cpu, vn, i + bias)
5250 - aarch64_get_vec_u16 (cpu, vm, i + bias));
5251 break;
5252
5253 case 2:
5254 for (i = 0; i < 2; i++)
5255 aarch64_set_vec_u64 (cpu, vd, i,
5256 aarch64_get_vec_u32 (cpu, vn, i + bias)
5257 - aarch64_get_vec_u32 (cpu, vm, i + bias));
5258 break;
5259
5260 default:
5261 HALT_UNALLOC;
5262 }
5263 break;
5264 }
5265 }
5266
5267 static void
5268 do_vec_ADDP (sim_cpu *cpu)
5269 {
5270 /* instr[31] = 0
5271 instr[30] = half(0)/full(1)
5272 instr[29,24] = 00 1110
5273 instr[23,22] = size: bytes (00), half (01), word (10), long (11)
5274 instr[21] = 1
5275 insrt[20,16] = Vm
5276 instr[15,10] = 1011 11
5277 instr[9,5] = Vn
5278 instr[4,0] = V dest. */
5279
5280 FRegister copy_vn;
5281 FRegister copy_vm;
5282 unsigned full = INSTR (30, 30);
5283 unsigned size = INSTR (23, 22);
5284 unsigned vm = INSTR (20, 16);
5285 unsigned vn = INSTR (9, 5);
5286 unsigned vd = INSTR (4, 0);
5287 unsigned i, range;
5288
5289 NYI_assert (29, 24, 0x0E);
5290 NYI_assert (21, 21, 1);
5291 NYI_assert (15, 10, 0x2F);
5292
5293 /* Make copies of the source registers in case vd == vn/vm. */
5294 copy_vn = cpu->fr[vn];
5295 copy_vm = cpu->fr[vm];
5296
5297 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
5298 switch (size)
5299 {
5300 case 0:
5301 range = full ? 8 : 4;
5302 for (i = 0; i < range; i++)
5303 {
5304 aarch64_set_vec_u8 (cpu, vd, i,
5305 copy_vn.b[i * 2] + copy_vn.b[i * 2 + 1]);
5306 aarch64_set_vec_u8 (cpu, vd, i + range,
5307 copy_vm.b[i * 2] + copy_vm.b[i * 2 + 1]);
5308 }
5309 return;
5310
5311 case 1:
5312 range = full ? 4 : 2;
5313 for (i = 0; i < range; i++)
5314 {
5315 aarch64_set_vec_u16 (cpu, vd, i,
5316 copy_vn.h[i * 2] + copy_vn.h[i * 2 + 1]);
5317 aarch64_set_vec_u16 (cpu, vd, i + range,
5318 copy_vm.h[i * 2] + copy_vm.h[i * 2 + 1]);
5319 }
5320 return;
5321
5322 case 2:
5323 range = full ? 2 : 1;
5324 for (i = 0; i < range; i++)
5325 {
5326 aarch64_set_vec_u32 (cpu, vd, i,
5327 copy_vn.w[i * 2] + copy_vn.w[i * 2 + 1]);
5328 aarch64_set_vec_u32 (cpu, vd, i + range,
5329 copy_vm.w[i * 2] + copy_vm.w[i * 2 + 1]);
5330 }
5331 return;
5332
5333 case 3:
5334 if (! full)
5335 HALT_UNALLOC;
5336 aarch64_set_vec_u64 (cpu, vd, 0, copy_vn.v[0] + copy_vn.v[1]);
5337 aarch64_set_vec_u64 (cpu, vd, 1, copy_vm.v[0] + copy_vm.v[1]);
5338 return;
5339 }
5340 }
5341
5342 static void
5343 do_vec_UMOV (sim_cpu *cpu)
5344 {
5345 /* instr[31] = 0
5346 instr[30] = 32-bit(0)/64-bit(1)
5347 instr[29,21] = 00 1110 000
5348 insrt[20,16] = size & index
5349 instr[15,10] = 0011 11
5350 instr[9,5] = V source
5351 instr[4,0] = R dest. */
5352
5353 unsigned vs = INSTR (9, 5);
5354 unsigned rd = INSTR (4, 0);
5355 unsigned index;
5356
5357 NYI_assert (29, 21, 0x070);
5358 NYI_assert (15, 10, 0x0F);
5359
5360 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
5361 if (INSTR (16, 16))
5362 {
5363 /* Byte transfer. */
5364 index = INSTR (20, 17);
5365 aarch64_set_reg_u64 (cpu, rd, NO_SP,
5366 aarch64_get_vec_u8 (cpu, vs, index));
5367 }
5368 else if (INSTR (17, 17))
5369 {
5370 index = INSTR (20, 18);
5371 aarch64_set_reg_u64 (cpu, rd, NO_SP,
5372 aarch64_get_vec_u16 (cpu, vs, index));
5373 }
5374 else if (INSTR (18, 18))
5375 {
5376 index = INSTR (20, 19);
5377 aarch64_set_reg_u64 (cpu, rd, NO_SP,
5378 aarch64_get_vec_u32 (cpu, vs, index));
5379 }
5380 else
5381 {
5382 if (INSTR (30, 30) != 1)
5383 HALT_UNALLOC;
5384
5385 index = INSTR (20, 20);
5386 aarch64_set_reg_u64 (cpu, rd, NO_SP,
5387 aarch64_get_vec_u64 (cpu, vs, index));
5388 }
5389 }
5390
5391 static void
5392 do_vec_FABS (sim_cpu *cpu)
5393 {
5394 /* instr[31] = 0
5395 instr[30] = half(0)/full(1)
5396 instr[29,23] = 00 1110 1
5397 instr[22] = float(0)/double(1)
5398 instr[21,16] = 10 0000
5399 instr[15,10] = 1111 10
5400 instr[9,5] = Vn
5401 instr[4,0] = Vd. */
5402
5403 unsigned vn = INSTR (9, 5);
5404 unsigned vd = INSTR (4, 0);
5405 unsigned full = INSTR (30, 30);
5406 unsigned i;
5407
5408 NYI_assert (29, 23, 0x1D);
5409 NYI_assert (21, 10, 0x83E);
5410
5411 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
5412 if (INSTR (22, 22))
5413 {
5414 if (! full)
5415 HALT_NYI;
5416
5417 for (i = 0; i < 2; i++)
5418 aarch64_set_vec_double (cpu, vd, i,
5419 fabs (aarch64_get_vec_double (cpu, vn, i)));
5420 }
5421 else
5422 {
5423 for (i = 0; i < (full ? 4 : 2); i++)
5424 aarch64_set_vec_float (cpu, vd, i,
5425 fabsf (aarch64_get_vec_float (cpu, vn, i)));
5426 }
5427 }
5428
5429 static void
5430 do_vec_FCVTZS (sim_cpu *cpu)
5431 {
5432 /* instr[31] = 0
5433 instr[30] = half (0) / all (1)
5434 instr[29,23] = 00 1110 1
5435 instr[22] = single (0) / double (1)
5436 instr[21,10] = 10 0001 1011 10
5437 instr[9,5] = Rn
5438 instr[4,0] = Rd. */
5439
5440 unsigned rn = INSTR (9, 5);
5441 unsigned rd = INSTR (4, 0);
5442 unsigned full = INSTR (30, 30);
5443 unsigned i;
5444
5445 NYI_assert (31, 31, 0);
5446 NYI_assert (29, 23, 0x1D);
5447 NYI_assert (21, 10, 0x86E);
5448
5449 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
5450 if (INSTR (22, 22))
5451 {
5452 if (! full)
5453 HALT_UNALLOC;
5454
5455 for (i = 0; i < 2; i++)
5456 aarch64_set_vec_s64 (cpu, rd, i,
5457 (int64_t) aarch64_get_vec_double (cpu, rn, i));
5458 }
5459 else
5460 for (i = 0; i < (full ? 4 : 2); i++)
5461 aarch64_set_vec_s32 (cpu, rd, i,
5462 (int32_t) aarch64_get_vec_float (cpu, rn, i));
5463 }
5464
5465 static void
5466 do_vec_REV64 (sim_cpu *cpu)
5467 {
5468 /* instr[31] = 0
5469 instr[30] = full/half
5470 instr[29,24] = 00 1110
5471 instr[23,22] = size
5472 instr[21,10] = 10 0000 0000 10
5473 instr[9,5] = Rn
5474 instr[4,0] = Rd. */
5475
5476 unsigned rn = INSTR (9, 5);
5477 unsigned rd = INSTR (4, 0);
5478 unsigned size = INSTR (23, 22);
5479 unsigned full = INSTR (30, 30);
5480 unsigned i;
5481 FRegister val;
5482
5483 NYI_assert (29, 24, 0x0E);
5484 NYI_assert (21, 10, 0x802);
5485
5486 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
5487 switch (size)
5488 {
5489 case 0:
5490 for (i = 0; i < (full ? 16 : 8); i++)
5491 val.b[i ^ 0x7] = aarch64_get_vec_u8 (cpu, rn, i);
5492 break;
5493
5494 case 1:
5495 for (i = 0; i < (full ? 8 : 4); i++)
5496 val.h[i ^ 0x3] = aarch64_get_vec_u16 (cpu, rn, i);
5497 break;
5498
5499 case 2:
5500 for (i = 0; i < (full ? 4 : 2); i++)
5501 val.w[i ^ 0x1] = aarch64_get_vec_u32 (cpu, rn, i);
5502 break;
5503
5504 case 3:
5505 HALT_UNALLOC;
5506 }
5507
5508 aarch64_set_vec_u64 (cpu, rd, 0, val.v[0]);
5509 if (full)
5510 aarch64_set_vec_u64 (cpu, rd, 1, val.v[1]);
5511 }
5512
5513 static void
5514 do_vec_REV16 (sim_cpu *cpu)
5515 {
5516 /* instr[31] = 0
5517 instr[30] = full/half
5518 instr[29,24] = 00 1110
5519 instr[23,22] = size
5520 instr[21,10] = 10 0000 0001 10
5521 instr[9,5] = Rn
5522 instr[4,0] = Rd. */
5523
5524 unsigned rn = INSTR (9, 5);
5525 unsigned rd = INSTR (4, 0);
5526 unsigned size = INSTR (23, 22);
5527 unsigned full = INSTR (30, 30);
5528 unsigned i;
5529 FRegister val;
5530
5531 NYI_assert (29, 24, 0x0E);
5532 NYI_assert (21, 10, 0x806);
5533
5534 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
5535 switch (size)
5536 {
5537 case 0:
5538 for (i = 0; i < (full ? 16 : 8); i++)
5539 val.b[i ^ 0x1] = aarch64_get_vec_u8 (cpu, rn, i);
5540 break;
5541
5542 default:
5543 HALT_UNALLOC;
5544 }
5545
5546 aarch64_set_vec_u64 (cpu, rd, 0, val.v[0]);
5547 if (full)
5548 aarch64_set_vec_u64 (cpu, rd, 1, val.v[1]);
5549 }
5550
5551 static void
5552 do_vec_op1 (sim_cpu *cpu)
5553 {
5554 /* instr[31] = 0
5555 instr[30] = half/full
5556 instr[29,24] = 00 1110
5557 instr[23,21] = ???
5558 instr[20,16] = Vm
5559 instr[15,10] = sub-opcode
5560 instr[9,5] = Vn
5561 instr[4,0] = Vd */
5562 NYI_assert (29, 24, 0x0E);
5563
5564 if (INSTR (21, 21) == 0)
5565 {
5566 if (INSTR (23, 22) == 0)
5567 {
5568 if (INSTR (30, 30) == 1
5569 && INSTR (17, 14) == 0
5570 && INSTR (12, 10) == 7)
5571 return do_vec_ins_2 (cpu);
5572
5573 switch (INSTR (15, 10))
5574 {
5575 case 0x01: do_vec_DUP_vector_into_vector (cpu); return;
5576 case 0x03: do_vec_DUP_scalar_into_vector (cpu); return;
5577 case 0x07: do_vec_INS (cpu); return;
5578 case 0x0A: do_vec_TRN (cpu); return;
5579
5580 case 0x0F:
5581 if (INSTR (17, 16) == 0)
5582 {
5583 do_vec_MOV_into_scalar (cpu);
5584 return;
5585 }
5586 break;
5587
5588 case 0x00:
5589 case 0x08:
5590 case 0x10:
5591 case 0x18:
5592 do_vec_TBL (cpu); return;
5593
5594 case 0x06:
5595 case 0x16:
5596 do_vec_UZP (cpu); return;
5597
5598 case 0x0E:
5599 case 0x1E:
5600 do_vec_ZIP (cpu); return;
5601
5602 default:
5603 HALT_NYI;
5604 }
5605 }
5606
5607 switch (INSTR (13, 10))
5608 {
5609 case 0x6: do_vec_UZP (cpu); return;
5610 case 0xE: do_vec_ZIP (cpu); return;
5611 case 0xA: do_vec_TRN (cpu); return;
5612 case 0xF: do_vec_UMOV (cpu); return;
5613 default: HALT_NYI;
5614 }
5615 }
5616
5617 switch (INSTR (15, 10))
5618 {
5619 case 0x02: do_vec_REV64 (cpu); return;
5620 case 0x06: do_vec_REV16 (cpu); return;
5621
5622 case 0x07:
5623 switch (INSTR (23, 21))
5624 {
5625 case 1: do_vec_AND (cpu); return;
5626 case 3: do_vec_BIC (cpu); return;
5627 case 5: do_vec_ORR (cpu); return;
5628 case 7: do_vec_ORN (cpu); return;
5629 default: HALT_NYI;
5630 }
5631
5632 case 0x08: do_vec_sub_long (cpu); return;
5633 case 0x0a: do_vec_XTN (cpu); return;
5634 case 0x11: do_vec_SSHL (cpu); return;
5635 case 0x19: do_vec_max (cpu); return;
5636 case 0x1B: do_vec_min (cpu); return;
5637 case 0x21: do_vec_add (cpu); return;
5638 case 0x25: do_vec_MLA (cpu); return;
5639 case 0x27: do_vec_mul (cpu); return;
5640 case 0x2F: do_vec_ADDP (cpu); return;
5641 case 0x30: do_vec_mull (cpu); return;
5642 case 0x33: do_vec_FMLA (cpu); return;
5643 case 0x35: do_vec_fadd (cpu); return;
5644
5645 case 0x2E:
5646 switch (INSTR (20, 16))
5647 {
5648 case 0x00: do_vec_ABS (cpu); return;
5649 case 0x01: do_vec_FCVTZS (cpu); return;
5650 case 0x11: do_vec_ADDV (cpu); return;
5651 default: HALT_NYI;
5652 }
5653
5654 case 0x31:
5655 case 0x3B:
5656 do_vec_Fminmax (cpu); return;
5657
5658 case 0x0D:
5659 case 0x0F:
5660 case 0x22:
5661 case 0x23:
5662 case 0x26:
5663 case 0x2A:
5664 case 0x32:
5665 case 0x36:
5666 case 0x39:
5667 case 0x3A:
5668 do_vec_compare (cpu); return;
5669
5670 case 0x3E:
5671 do_vec_FABS (cpu); return;
5672
5673 default:
5674 HALT_NYI;
5675 }
5676 }
5677
5678 static void
5679 do_vec_xtl (sim_cpu *cpu)
5680 {
5681 /* instr[31] = 0
5682 instr[30,29] = SXTL (00), UXTL (01), SXTL2 (10), UXTL2 (11)
5683 instr[28,22] = 0 1111 00
5684 instr[21,16] = size & shift (USHLL, SSHLL, USHLL2, SSHLL2)
5685 instr[15,10] = 1010 01
5686 instr[9,5] = V source
5687 instr[4,0] = V dest. */
5688
5689 unsigned vs = INSTR (9, 5);
5690 unsigned vd = INSTR (4, 0);
5691 unsigned i, shift, bias = 0;
5692
5693 NYI_assert (28, 22, 0x3C);
5694 NYI_assert (15, 10, 0x29);
5695
5696 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
5697 switch (INSTR (30, 29))
5698 {
5699 case 2: /* SXTL2, SSHLL2. */
5700 bias = 2;
5701 case 0: /* SXTL, SSHLL. */
5702 if (INSTR (21, 21))
5703 {
5704 int64_t val1, val2;
5705
5706 shift = INSTR (20, 16);
5707 /* Get the source values before setting the destination values
5708 in case the source and destination are the same. */
5709 val1 = aarch64_get_vec_s32 (cpu, vs, bias) << shift;
5710 val2 = aarch64_get_vec_s32 (cpu, vs, bias + 1) << shift;
5711 aarch64_set_vec_s64 (cpu, vd, 0, val1);
5712 aarch64_set_vec_s64 (cpu, vd, 1, val2);
5713 }
5714 else if (INSTR (20, 20))
5715 {
5716 int32_t v[4];
5717 int32_t v1,v2,v3,v4;
5718
5719 shift = INSTR (19, 16);
5720 bias *= 2;
5721 for (i = 0; i < 4; i++)
5722 v[i] = aarch64_get_vec_s16 (cpu, vs, bias + i) << shift;
5723 for (i = 0; i < 4; i++)
5724 aarch64_set_vec_s32 (cpu, vd, i, v[i]);
5725 }
5726 else
5727 {
5728 int16_t v[8];
5729 NYI_assert (19, 19, 1);
5730
5731 shift = INSTR (18, 16);
5732 bias *= 3;
5733 for (i = 0; i < 8; i++)
5734 v[i] = aarch64_get_vec_s8 (cpu, vs, i + bias) << shift;
5735 for (i = 0; i < 8; i++)
5736 aarch64_set_vec_s16 (cpu, vd, i, v[i]);
5737 }
5738 return;
5739
5740 case 3: /* UXTL2, USHLL2. */
5741 bias = 2;
5742 case 1: /* UXTL, USHLL. */
5743 if (INSTR (21, 21))
5744 {
5745 uint64_t v1, v2;
5746 shift = INSTR (20, 16);
5747 v1 = aarch64_get_vec_u32 (cpu, vs, bias) << shift;
5748 v2 = aarch64_get_vec_u32 (cpu, vs, bias + 1) << shift;
5749 aarch64_set_vec_u64 (cpu, vd, 0, v1);
5750 aarch64_set_vec_u64 (cpu, vd, 1, v2);
5751 }
5752 else if (INSTR (20, 20))
5753 {
5754 uint32_t v[4];
5755 shift = INSTR (19, 16);
5756 bias *= 2;
5757 for (i = 0; i < 4; i++)
5758 v[i] = aarch64_get_vec_u16 (cpu, vs, i + bias) << shift;
5759 for (i = 0; i < 4; i++)
5760 aarch64_set_vec_u32 (cpu, vd, i, v[i]);
5761 }
5762 else
5763 {
5764 uint16_t v[8];
5765 NYI_assert (19, 19, 1);
5766
5767 shift = INSTR (18, 16);
5768 bias *= 3;
5769 for (i = 0; i < 8; i++)
5770 v[i] = aarch64_get_vec_u8 (cpu, vs, i + bias) << shift;
5771 for (i = 0; i < 8; i++)
5772 aarch64_set_vec_u16 (cpu, vd, i, v[i]);
5773 }
5774 return;
5775 }
5776 }
5777
5778 static void
5779 do_vec_SHL (sim_cpu *cpu)
5780 {
5781 /* instr [31] = 0
5782 instr [30] = half(0)/full(1)
5783 instr [29,23] = 001 1110
5784 instr [22,16] = size and shift amount
5785 instr [15,10] = 01 0101
5786 instr [9, 5] = Vs
5787 instr [4, 0] = Vd. */
5788
5789 int shift;
5790 int full = INSTR (30, 30);
5791 unsigned vs = INSTR (9, 5);
5792 unsigned vd = INSTR (4, 0);
5793 unsigned i;
5794
5795 NYI_assert (29, 23, 0x1E);
5796 NYI_assert (15, 10, 0x15);
5797
5798 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
5799 if (INSTR (22, 22))
5800 {
5801 shift = INSTR (21, 16);
5802
5803 if (full == 0)
5804 HALT_UNALLOC;
5805
5806 for (i = 0; i < 2; i++)
5807 {
5808 uint64_t val = aarch64_get_vec_u64 (cpu, vs, i);
5809 aarch64_set_vec_u64 (cpu, vd, i, val << shift);
5810 }
5811
5812 return;
5813 }
5814
5815 if (INSTR (21, 21))
5816 {
5817 shift = INSTR (20, 16);
5818
5819 for (i = 0; i < (full ? 4 : 2); i++)
5820 {
5821 uint32_t val = aarch64_get_vec_u32 (cpu, vs, i);
5822 aarch64_set_vec_u32 (cpu, vd, i, val << shift);
5823 }
5824
5825 return;
5826 }
5827
5828 if (INSTR (20, 20))
5829 {
5830 shift = INSTR (19, 16);
5831
5832 for (i = 0; i < (full ? 8 : 4); i++)
5833 {
5834 uint16_t val = aarch64_get_vec_u16 (cpu, vs, i);
5835 aarch64_set_vec_u16 (cpu, vd, i, val << shift);
5836 }
5837
5838 return;
5839 }
5840
5841 if (INSTR (19, 19) == 0)
5842 HALT_UNALLOC;
5843
5844 shift = INSTR (18, 16);
5845
5846 for (i = 0; i < (full ? 16 : 8); i++)
5847 {
5848 uint8_t val = aarch64_get_vec_u8 (cpu, vs, i);
5849 aarch64_set_vec_u8 (cpu, vd, i, val << shift);
5850 }
5851 }
5852
5853 static void
5854 do_vec_SSHR_USHR (sim_cpu *cpu)
5855 {
5856 /* instr [31] = 0
5857 instr [30] = half(0)/full(1)
5858 instr [29] = signed(0)/unsigned(1)
5859 instr [28,23] = 0 1111 0
5860 instr [22,16] = size and shift amount
5861 instr [15,10] = 0000 01
5862 instr [9, 5] = Vs
5863 instr [4, 0] = Vd. */
5864
5865 int full = INSTR (30, 30);
5866 int sign = ! INSTR (29, 29);
5867 unsigned shift = INSTR (22, 16);
5868 unsigned vs = INSTR (9, 5);
5869 unsigned vd = INSTR (4, 0);
5870 unsigned i;
5871
5872 NYI_assert (28, 23, 0x1E);
5873 NYI_assert (15, 10, 0x01);
5874
5875 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
5876 if (INSTR (22, 22))
5877 {
5878 shift = 128 - shift;
5879
5880 if (full == 0)
5881 HALT_UNALLOC;
5882
5883 if (sign)
5884 for (i = 0; i < 2; i++)
5885 {
5886 int64_t val = aarch64_get_vec_s64 (cpu, vs, i);
5887 aarch64_set_vec_s64 (cpu, vd, i, val >> shift);
5888 }
5889 else
5890 for (i = 0; i < 2; i++)
5891 {
5892 uint64_t val = aarch64_get_vec_u64 (cpu, vs, i);
5893 aarch64_set_vec_u64 (cpu, vd, i, val >> shift);
5894 }
5895
5896 return;
5897 }
5898
5899 if (INSTR (21, 21))
5900 {
5901 shift = 64 - shift;
5902
5903 if (sign)
5904 for (i = 0; i < (full ? 4 : 2); i++)
5905 {
5906 int32_t val = aarch64_get_vec_s32 (cpu, vs, i);
5907 aarch64_set_vec_s32 (cpu, vd, i, val >> shift);
5908 }
5909 else
5910 for (i = 0; i < (full ? 4 : 2); i++)
5911 {
5912 uint32_t val = aarch64_get_vec_u32 (cpu, vs, i);
5913 aarch64_set_vec_u32 (cpu, vd, i, val >> shift);
5914 }
5915
5916 return;
5917 }
5918
5919 if (INSTR (20, 20))
5920 {
5921 shift = 32 - shift;
5922
5923 if (sign)
5924 for (i = 0; i < (full ? 8 : 4); i++)
5925 {
5926 int16_t val = aarch64_get_vec_s16 (cpu, vs, i);
5927 aarch64_set_vec_s16 (cpu, vd, i, val >> shift);
5928 }
5929 else
5930 for (i = 0; i < (full ? 8 : 4); i++)
5931 {
5932 uint16_t val = aarch64_get_vec_u16 (cpu, vs, i);
5933 aarch64_set_vec_u16 (cpu, vd, i, val >> shift);
5934 }
5935
5936 return;
5937 }
5938
5939 if (INSTR (19, 19) == 0)
5940 HALT_UNALLOC;
5941
5942 shift = 16 - shift;
5943
5944 if (sign)
5945 for (i = 0; i < (full ? 16 : 8); i++)
5946 {
5947 int8_t val = aarch64_get_vec_s8 (cpu, vs, i);
5948 aarch64_set_vec_s8 (cpu, vd, i, val >> shift);
5949 }
5950 else
5951 for (i = 0; i < (full ? 16 : 8); i++)
5952 {
5953 uint8_t val = aarch64_get_vec_u8 (cpu, vs, i);
5954 aarch64_set_vec_u8 (cpu, vd, i, val >> shift);
5955 }
5956 }
5957
5958 static void
5959 do_vec_MUL_by_element (sim_cpu *cpu)
5960 {
5961 /* instr[31] = 0
5962 instr[30] = half/full
5963 instr[29,24] = 00 1111
5964 instr[23,22] = size
5965 instr[21] = L
5966 instr[20] = M
5967 instr[19,16] = m
5968 instr[15,12] = 1000
5969 instr[11] = H
5970 instr[10] = 0
5971 instr[9,5] = Vn
5972 instr[4,0] = Vd */
5973
5974 unsigned full = INSTR (30, 30);
5975 unsigned L = INSTR (21, 21);
5976 unsigned H = INSTR (11, 11);
5977 unsigned vn = INSTR (9, 5);
5978 unsigned vd = INSTR (4, 0);
5979 unsigned size = INSTR (23, 22);
5980 unsigned index;
5981 unsigned vm;
5982 unsigned e;
5983
5984 NYI_assert (29, 24, 0x0F);
5985 NYI_assert (15, 12, 0x8);
5986 NYI_assert (10, 10, 0);
5987
5988 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
5989 switch (size)
5990 {
5991 case 1:
5992 {
5993 /* 16 bit products. */
5994 uint16_t product;
5995 uint16_t element1;
5996 uint16_t element2;
5997
5998 index = (H << 2) | (L << 1) | INSTR (20, 20);
5999 vm = INSTR (19, 16);
6000 element2 = aarch64_get_vec_u16 (cpu, vm, index);
6001
6002 for (e = 0; e < (full ? 8 : 4); e ++)
6003 {
6004 element1 = aarch64_get_vec_u16 (cpu, vn, e);
6005 product = element1 * element2;
6006 aarch64_set_vec_u16 (cpu, vd, e, product);
6007 }
6008 }
6009 break;
6010
6011 case 2:
6012 {
6013 /* 32 bit products. */
6014 uint32_t product;
6015 uint32_t element1;
6016 uint32_t element2;
6017
6018 index = (H << 1) | L;
6019 vm = INSTR (20, 16);
6020 element2 = aarch64_get_vec_u32 (cpu, vm, index);
6021
6022 for (e = 0; e < (full ? 4 : 2); e ++)
6023 {
6024 element1 = aarch64_get_vec_u32 (cpu, vn, e);
6025 product = element1 * element2;
6026 aarch64_set_vec_u32 (cpu, vd, e, product);
6027 }
6028 }
6029 break;
6030
6031 default:
6032 HALT_UNALLOC;
6033 }
6034 }
6035
6036 static void
6037 do_FMLA_by_element (sim_cpu *cpu)
6038 {
6039 /* instr[31] = 0
6040 instr[30] = half/full
6041 instr[29,23] = 00 1111 1
6042 instr[22] = size
6043 instr[21] = L
6044 instr[20,16] = m
6045 instr[15,12] = 0001
6046 instr[11] = H
6047 instr[10] = 0
6048 instr[9,5] = Vn
6049 instr[4,0] = Vd */
6050
6051 unsigned full = INSTR (30, 30);
6052 unsigned size = INSTR (22, 22);
6053 unsigned L = INSTR (21, 21);
6054 unsigned vm = INSTR (20, 16);
6055 unsigned H = INSTR (11, 11);
6056 unsigned vn = INSTR (9, 5);
6057 unsigned vd = INSTR (4, 0);
6058 unsigned e;
6059
6060 NYI_assert (29, 23, 0x1F);
6061 NYI_assert (15, 12, 0x1);
6062 NYI_assert (10, 10, 0);
6063
6064 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
6065 if (size)
6066 {
6067 double element1, element2;
6068
6069 if (! full || L)
6070 HALT_UNALLOC;
6071
6072 element2 = aarch64_get_vec_double (cpu, vm, H);
6073
6074 for (e = 0; e < 2; e++)
6075 {
6076 element1 = aarch64_get_vec_double (cpu, vn, e);
6077 element1 *= element2;
6078 element1 += aarch64_get_vec_double (cpu, vd, e);
6079 aarch64_set_vec_double (cpu, vd, e, element1);
6080 }
6081 }
6082 else
6083 {
6084 float element1;
6085 float element2 = aarch64_get_vec_float (cpu, vm, (H << 1) | L);
6086
6087 for (e = 0; e < (full ? 4 : 2); e++)
6088 {
6089 element1 = aarch64_get_vec_float (cpu, vn, e);
6090 element1 *= element2;
6091 element1 += aarch64_get_vec_float (cpu, vd, e);
6092 aarch64_set_vec_float (cpu, vd, e, element1);
6093 }
6094 }
6095 }
6096
6097 static void
6098 do_vec_op2 (sim_cpu *cpu)
6099 {
6100 /* instr[31] = 0
6101 instr[30] = half/full
6102 instr[29,24] = 00 1111
6103 instr[23] = ?
6104 instr[22,16] = element size & index
6105 instr[15,10] = sub-opcode
6106 instr[9,5] = Vm
6107 instr[4,0] = Vd */
6108
6109 NYI_assert (29, 24, 0x0F);
6110
6111 if (INSTR (23, 23) != 0)
6112 {
6113 switch (INSTR (15, 10))
6114 {
6115 case 0x04:
6116 case 0x06:
6117 do_FMLA_by_element (cpu);
6118 return;
6119
6120 case 0x20:
6121 case 0x22:
6122 do_vec_MUL_by_element (cpu);
6123 return;
6124
6125 default:
6126 HALT_NYI;
6127 }
6128 }
6129 else
6130 {
6131 switch (INSTR (15, 10))
6132 {
6133 case 0x01: do_vec_SSHR_USHR (cpu); return;
6134 case 0x15: do_vec_SHL (cpu); return;
6135 case 0x20:
6136 case 0x22: do_vec_MUL_by_element (cpu); return;
6137 case 0x29: do_vec_xtl (cpu); return;
6138 default: HALT_NYI;
6139 }
6140 }
6141 }
6142
6143 static void
6144 do_vec_neg (sim_cpu *cpu)
6145 {
6146 /* instr[31] = 0
6147 instr[30] = full(1)/half(0)
6148 instr[29,24] = 10 1110
6149 instr[23,22] = size: byte(00), half (01), word (10), long (11)
6150 instr[21,10] = 1000 0010 1110
6151 instr[9,5] = Vs
6152 instr[4,0] = Vd */
6153
6154 int full = INSTR (30, 30);
6155 unsigned vs = INSTR (9, 5);
6156 unsigned vd = INSTR (4, 0);
6157 unsigned i;
6158
6159 NYI_assert (29, 24, 0x2E);
6160 NYI_assert (21, 10, 0x82E);
6161
6162 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
6163 switch (INSTR (23, 22))
6164 {
6165 case 0:
6166 for (i = 0; i < (full ? 16 : 8); i++)
6167 aarch64_set_vec_s8 (cpu, vd, i, - aarch64_get_vec_s8 (cpu, vs, i));
6168 return;
6169
6170 case 1:
6171 for (i = 0; i < (full ? 8 : 4); i++)
6172 aarch64_set_vec_s16 (cpu, vd, i, - aarch64_get_vec_s16 (cpu, vs, i));
6173 return;
6174
6175 case 2:
6176 for (i = 0; i < (full ? 4 : 2); i++)
6177 aarch64_set_vec_s32 (cpu, vd, i, - aarch64_get_vec_s32 (cpu, vs, i));
6178 return;
6179
6180 case 3:
6181 if (! full)
6182 HALT_NYI;
6183 for (i = 0; i < 2; i++)
6184 aarch64_set_vec_s64 (cpu, vd, i, - aarch64_get_vec_s64 (cpu, vs, i));
6185 return;
6186 }
6187 }
6188
6189 static void
6190 do_vec_sqrt (sim_cpu *cpu)
6191 {
6192 /* instr[31] = 0
6193 instr[30] = full(1)/half(0)
6194 instr[29,23] = 101 1101
6195 instr[22] = single(0)/double(1)
6196 instr[21,10] = 1000 0111 1110
6197 instr[9,5] = Vs
6198 instr[4,0] = Vd. */
6199
6200 int full = INSTR (30, 30);
6201 unsigned vs = INSTR (9, 5);
6202 unsigned vd = INSTR (4, 0);
6203 unsigned i;
6204
6205 NYI_assert (29, 23, 0x5B);
6206 NYI_assert (21, 10, 0x87E);
6207
6208 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
6209 if (INSTR (22, 22) == 0)
6210 for (i = 0; i < (full ? 4 : 2); i++)
6211 aarch64_set_vec_float (cpu, vd, i,
6212 sqrtf (aarch64_get_vec_float (cpu, vs, i)));
6213 else
6214 for (i = 0; i < 2; i++)
6215 aarch64_set_vec_double (cpu, vd, i,
6216 sqrt (aarch64_get_vec_double (cpu, vs, i)));
6217 }
6218
6219 static void
6220 do_vec_mls_indexed (sim_cpu *cpu)
6221 {
6222 /* instr[31] = 0
6223 instr[30] = half(0)/full(1)
6224 instr[29,24] = 10 1111
6225 instr[23,22] = 16-bit(01)/32-bit(10)
6226 instr[21,20+11] = index (if 16-bit)
6227 instr[21+11] = index (if 32-bit)
6228 instr[20,16] = Vm
6229 instr[15,12] = 0100
6230 instr[11] = part of index
6231 instr[10] = 0
6232 instr[9,5] = Vs
6233 instr[4,0] = Vd. */
6234
6235 int full = INSTR (30, 30);
6236 unsigned vs = INSTR (9, 5);
6237 unsigned vd = INSTR (4, 0);
6238 unsigned vm = INSTR (20, 16);
6239 unsigned i;
6240
6241 NYI_assert (15, 12, 4);
6242 NYI_assert (10, 10, 0);
6243
6244 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
6245 switch (INSTR (23, 22))
6246 {
6247 case 1:
6248 {
6249 unsigned elem;
6250 uint32_t val;
6251
6252 if (vm > 15)
6253 HALT_NYI;
6254
6255 elem = (INSTR (21, 20) << 1) | INSTR (11, 11);
6256 val = aarch64_get_vec_u16 (cpu, vm, elem);
6257
6258 for (i = 0; i < (full ? 8 : 4); i++)
6259 aarch64_set_vec_u32 (cpu, vd, i,
6260 aarch64_get_vec_u32 (cpu, vd, i) -
6261 (aarch64_get_vec_u32 (cpu, vs, i) * val));
6262 return;
6263 }
6264
6265 case 2:
6266 {
6267 unsigned elem = (INSTR (21, 21) << 1) | INSTR (11, 11);
6268 uint64_t val = aarch64_get_vec_u32 (cpu, vm, elem);
6269
6270 for (i = 0; i < (full ? 4 : 2); i++)
6271 aarch64_set_vec_u64 (cpu, vd, i,
6272 aarch64_get_vec_u64 (cpu, vd, i) -
6273 (aarch64_get_vec_u64 (cpu, vs, i) * val));
6274 return;
6275 }
6276
6277 case 0:
6278 case 3:
6279 default:
6280 HALT_NYI;
6281 }
6282 }
6283
6284 static void
6285 do_vec_SUB (sim_cpu *cpu)
6286 {
6287 /* instr [31] = 0
6288 instr [30] = half(0)/full(1)
6289 instr [29,24] = 10 1110
6290 instr [23,22] = size: byte(00, half(01), word (10), long (11)
6291 instr [21] = 1
6292 instr [20,16] = Vm
6293 instr [15,10] = 10 0001
6294 instr [9, 5] = Vn
6295 instr [4, 0] = Vd. */
6296
6297 unsigned full = INSTR (30, 30);
6298 unsigned vm = INSTR (20, 16);
6299 unsigned vn = INSTR (9, 5);
6300 unsigned vd = INSTR (4, 0);
6301 unsigned i;
6302
6303 NYI_assert (29, 24, 0x2E);
6304 NYI_assert (21, 21, 1);
6305 NYI_assert (15, 10, 0x21);
6306
6307 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
6308 switch (INSTR (23, 22))
6309 {
6310 case 0:
6311 for (i = 0; i < (full ? 16 : 8); i++)
6312 aarch64_set_vec_s8 (cpu, vd, i,
6313 aarch64_get_vec_s8 (cpu, vn, i)
6314 - aarch64_get_vec_s8 (cpu, vm, i));
6315 return;
6316
6317 case 1:
6318 for (i = 0; i < (full ? 8 : 4); i++)
6319 aarch64_set_vec_s16 (cpu, vd, i,
6320 aarch64_get_vec_s16 (cpu, vn, i)
6321 - aarch64_get_vec_s16 (cpu, vm, i));
6322 return;
6323
6324 case 2:
6325 for (i = 0; i < (full ? 4 : 2); i++)
6326 aarch64_set_vec_s32 (cpu, vd, i,
6327 aarch64_get_vec_s32 (cpu, vn, i)
6328 - aarch64_get_vec_s32 (cpu, vm, i));
6329 return;
6330
6331 case 3:
6332 if (full == 0)
6333 HALT_UNALLOC;
6334
6335 for (i = 0; i < 2; i++)
6336 aarch64_set_vec_s64 (cpu, vd, i,
6337 aarch64_get_vec_s64 (cpu, vn, i)
6338 - aarch64_get_vec_s64 (cpu, vm, i));
6339 return;
6340 }
6341 }
6342
6343 static void
6344 do_vec_MLS (sim_cpu *cpu)
6345 {
6346 /* instr [31] = 0
6347 instr [30] = half(0)/full(1)
6348 instr [29,24] = 10 1110
6349 instr [23,22] = size: byte(00, half(01), word (10)
6350 instr [21] = 1
6351 instr [20,16] = Vm
6352 instr [15,10] = 10 0101
6353 instr [9, 5] = Vn
6354 instr [4, 0] = Vd. */
6355
6356 unsigned full = INSTR (30, 30);
6357 unsigned vm = INSTR (20, 16);
6358 unsigned vn = INSTR (9, 5);
6359 unsigned vd = INSTR (4, 0);
6360 unsigned i;
6361
6362 NYI_assert (29, 24, 0x2E);
6363 NYI_assert (21, 21, 1);
6364 NYI_assert (15, 10, 0x25);
6365
6366 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
6367 switch (INSTR (23, 22))
6368 {
6369 case 0:
6370 for (i = 0; i < (full ? 16 : 8); i++)
6371 aarch64_set_vec_u8 (cpu, vd, i,
6372 (aarch64_get_vec_u8 (cpu, vn, i)
6373 * aarch64_get_vec_u8 (cpu, vm, i))
6374 - aarch64_get_vec_u8 (cpu, vd, i));
6375 return;
6376
6377 case 1:
6378 for (i = 0; i < (full ? 8 : 4); i++)
6379 aarch64_set_vec_u16 (cpu, vd, i,
6380 (aarch64_get_vec_u16 (cpu, vn, i)
6381 * aarch64_get_vec_u16 (cpu, vm, i))
6382 - aarch64_get_vec_u16 (cpu, vd, i));
6383 return;
6384
6385 case 2:
6386 for (i = 0; i < (full ? 4 : 2); i++)
6387 aarch64_set_vec_u32 (cpu, vd, i,
6388 (aarch64_get_vec_u32 (cpu, vn, i)
6389 * aarch64_get_vec_u32 (cpu, vm, i))
6390 - aarch64_get_vec_u32 (cpu, vd, i));
6391 return;
6392
6393 default:
6394 HALT_UNALLOC;
6395 }
6396 }
6397
6398 static void
6399 do_vec_FDIV (sim_cpu *cpu)
6400 {
6401 /* instr [31] = 0
6402 instr [30] = half(0)/full(1)
6403 instr [29,23] = 10 1110 0
6404 instr [22] = float()/double(1)
6405 instr [21] = 1
6406 instr [20,16] = Vm
6407 instr [15,10] = 1111 11
6408 instr [9, 5] = Vn
6409 instr [4, 0] = Vd. */
6410
6411 unsigned full = INSTR (30, 30);
6412 unsigned vm = INSTR (20, 16);
6413 unsigned vn = INSTR (9, 5);
6414 unsigned vd = INSTR (4, 0);
6415 unsigned i;
6416
6417 NYI_assert (29, 23, 0x5C);
6418 NYI_assert (21, 21, 1);
6419 NYI_assert (15, 10, 0x3F);
6420
6421 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
6422 if (INSTR (22, 22))
6423 {
6424 if (! full)
6425 HALT_UNALLOC;
6426
6427 for (i = 0; i < 2; i++)
6428 aarch64_set_vec_double (cpu, vd, i,
6429 aarch64_get_vec_double (cpu, vn, i)
6430 / aarch64_get_vec_double (cpu, vm, i));
6431 }
6432 else
6433 for (i = 0; i < (full ? 4 : 2); i++)
6434 aarch64_set_vec_float (cpu, vd, i,
6435 aarch64_get_vec_float (cpu, vn, i)
6436 / aarch64_get_vec_float (cpu, vm, i));
6437 }
6438
6439 static void
6440 do_vec_FMUL (sim_cpu *cpu)
6441 {
6442 /* instr [31] = 0
6443 instr [30] = half(0)/full(1)
6444 instr [29,23] = 10 1110 0
6445 instr [22] = float(0)/double(1)
6446 instr [21] = 1
6447 instr [20,16] = Vm
6448 instr [15,10] = 1101 11
6449 instr [9, 5] = Vn
6450 instr [4, 0] = Vd. */
6451
6452 unsigned full = INSTR (30, 30);
6453 unsigned vm = INSTR (20, 16);
6454 unsigned vn = INSTR (9, 5);
6455 unsigned vd = INSTR (4, 0);
6456 unsigned i;
6457
6458 NYI_assert (29, 23, 0x5C);
6459 NYI_assert (21, 21, 1);
6460 NYI_assert (15, 10, 0x37);
6461
6462 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
6463 if (INSTR (22, 22))
6464 {
6465 if (! full)
6466 HALT_UNALLOC;
6467
6468 for (i = 0; i < 2; i++)
6469 aarch64_set_vec_double (cpu, vd, i,
6470 aarch64_get_vec_double (cpu, vn, i)
6471 * aarch64_get_vec_double (cpu, vm, i));
6472 }
6473 else
6474 for (i = 0; i < (full ? 4 : 2); i++)
6475 aarch64_set_vec_float (cpu, vd, i,
6476 aarch64_get_vec_float (cpu, vn, i)
6477 * aarch64_get_vec_float (cpu, vm, i));
6478 }
6479
6480 static void
6481 do_vec_FADDP (sim_cpu *cpu)
6482 {
6483 /* instr [31] = 0
6484 instr [30] = half(0)/full(1)
6485 instr [29,23] = 10 1110 0
6486 instr [22] = float(0)/double(1)
6487 instr [21] = 1
6488 instr [20,16] = Vm
6489 instr [15,10] = 1101 01
6490 instr [9, 5] = Vn
6491 instr [4, 0] = Vd. */
6492
6493 unsigned full = INSTR (30, 30);
6494 unsigned vm = INSTR (20, 16);
6495 unsigned vn = INSTR (9, 5);
6496 unsigned vd = INSTR (4, 0);
6497
6498 NYI_assert (29, 23, 0x5C);
6499 NYI_assert (21, 21, 1);
6500 NYI_assert (15, 10, 0x35);
6501
6502 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
6503 if (INSTR (22, 22))
6504 {
6505 /* Extract values before adding them incase vd == vn/vm. */
6506 double tmp1 = aarch64_get_vec_double (cpu, vn, 0);
6507 double tmp2 = aarch64_get_vec_double (cpu, vn, 1);
6508 double tmp3 = aarch64_get_vec_double (cpu, vm, 0);
6509 double tmp4 = aarch64_get_vec_double (cpu, vm, 1);
6510
6511 if (! full)
6512 HALT_UNALLOC;
6513
6514 aarch64_set_vec_double (cpu, vd, 0, tmp1 + tmp2);
6515 aarch64_set_vec_double (cpu, vd, 1, tmp3 + tmp4);
6516 }
6517 else
6518 {
6519 /* Extract values before adding them incase vd == vn/vm. */
6520 float tmp1 = aarch64_get_vec_float (cpu, vn, 0);
6521 float tmp2 = aarch64_get_vec_float (cpu, vn, 1);
6522 float tmp5 = aarch64_get_vec_float (cpu, vm, 0);
6523 float tmp6 = aarch64_get_vec_float (cpu, vm, 1);
6524
6525 if (full)
6526 {
6527 float tmp3 = aarch64_get_vec_float (cpu, vn, 2);
6528 float tmp4 = aarch64_get_vec_float (cpu, vn, 3);
6529 float tmp7 = aarch64_get_vec_float (cpu, vm, 2);
6530 float tmp8 = aarch64_get_vec_float (cpu, vm, 3);
6531
6532 aarch64_set_vec_float (cpu, vd, 0, tmp1 + tmp2);
6533 aarch64_set_vec_float (cpu, vd, 1, tmp3 + tmp4);
6534 aarch64_set_vec_float (cpu, vd, 2, tmp5 + tmp6);
6535 aarch64_set_vec_float (cpu, vd, 3, tmp7 + tmp8);
6536 }
6537 else
6538 {
6539 aarch64_set_vec_float (cpu, vd, 0, tmp1 + tmp2);
6540 aarch64_set_vec_float (cpu, vd, 1, tmp5 + tmp6);
6541 }
6542 }
6543 }
6544
6545 static void
6546 do_vec_FSQRT (sim_cpu *cpu)
6547 {
6548 /* instr[31] = 0
6549 instr[30] = half(0)/full(1)
6550 instr[29,23] = 10 1110 1
6551 instr[22] = single(0)/double(1)
6552 instr[21,10] = 10 0001 1111 10
6553 instr[9,5] = Vsrc
6554 instr[4,0] = Vdest. */
6555
6556 unsigned vn = INSTR (9, 5);
6557 unsigned vd = INSTR (4, 0);
6558 unsigned full = INSTR (30, 30);
6559 int i;
6560
6561 NYI_assert (29, 23, 0x5D);
6562 NYI_assert (21, 10, 0x87E);
6563
6564 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
6565 if (INSTR (22, 22))
6566 {
6567 if (! full)
6568 HALT_UNALLOC;
6569
6570 for (i = 0; i < 2; i++)
6571 aarch64_set_vec_double (cpu, vd, i,
6572 sqrt (aarch64_get_vec_double (cpu, vn, i)));
6573 }
6574 else
6575 {
6576 for (i = 0; i < (full ? 4 : 2); i++)
6577 aarch64_set_vec_float (cpu, vd, i,
6578 sqrtf (aarch64_get_vec_float (cpu, vn, i)));
6579 }
6580 }
6581
6582 static void
6583 do_vec_FNEG (sim_cpu *cpu)
6584 {
6585 /* instr[31] = 0
6586 instr[30] = half (0)/full (1)
6587 instr[29,23] = 10 1110 1
6588 instr[22] = single (0)/double (1)
6589 instr[21,10] = 10 0000 1111 10
6590 instr[9,5] = Vsrc
6591 instr[4,0] = Vdest. */
6592
6593 unsigned vn = INSTR (9, 5);
6594 unsigned vd = INSTR (4, 0);
6595 unsigned full = INSTR (30, 30);
6596 int i;
6597
6598 NYI_assert (29, 23, 0x5D);
6599 NYI_assert (21, 10, 0x83E);
6600
6601 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
6602 if (INSTR (22, 22))
6603 {
6604 if (! full)
6605 HALT_UNALLOC;
6606
6607 for (i = 0; i < 2; i++)
6608 aarch64_set_vec_double (cpu, vd, i,
6609 - aarch64_get_vec_double (cpu, vn, i));
6610 }
6611 else
6612 {
6613 for (i = 0; i < (full ? 4 : 2); i++)
6614 aarch64_set_vec_float (cpu, vd, i,
6615 - aarch64_get_vec_float (cpu, vn, i));
6616 }
6617 }
6618
6619 static void
6620 do_vec_NOT (sim_cpu *cpu)
6621 {
6622 /* instr[31] = 0
6623 instr[30] = half (0)/full (1)
6624 instr[29,10] = 10 1110 0010 0000 0101 10
6625 instr[9,5] = Vn
6626 instr[4.0] = Vd. */
6627
6628 unsigned vn = INSTR (9, 5);
6629 unsigned vd = INSTR (4, 0);
6630 unsigned i;
6631 int full = INSTR (30, 30);
6632
6633 NYI_assert (29, 10, 0xB8816);
6634
6635 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
6636 for (i = 0; i < (full ? 16 : 8); i++)
6637 aarch64_set_vec_u8 (cpu, vd, i, ~ aarch64_get_vec_u8 (cpu, vn, i));
6638 }
6639
6640 static unsigned int
6641 clz (uint64_t val, unsigned size)
6642 {
6643 uint64_t mask = 1;
6644 int count;
6645
6646 mask <<= (size - 1);
6647 count = 0;
6648 do
6649 {
6650 if (val & mask)
6651 break;
6652 mask >>= 1;
6653 count ++;
6654 }
6655 while (mask);
6656
6657 return count;
6658 }
6659
6660 static void
6661 do_vec_CLZ (sim_cpu *cpu)
6662 {
6663 /* instr[31] = 0
6664 instr[30] = half (0)/full (1)
6665 instr[29,24] = 10 1110
6666 instr[23,22] = size
6667 instr[21,10] = 10 0000 0100 10
6668 instr[9,5] = Vn
6669 instr[4.0] = Vd. */
6670
6671 unsigned vn = INSTR (9, 5);
6672 unsigned vd = INSTR (4, 0);
6673 unsigned i;
6674 int full = INSTR (30,30);
6675
6676 NYI_assert (29, 24, 0x2E);
6677 NYI_assert (21, 10, 0x812);
6678
6679 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
6680 switch (INSTR (23, 22))
6681 {
6682 case 0:
6683 for (i = 0; i < (full ? 16 : 8); i++)
6684 aarch64_set_vec_u8 (cpu, vd, i, clz (aarch64_get_vec_u8 (cpu, vn, i), 8));
6685 break;
6686 case 1:
6687 for (i = 0; i < (full ? 8 : 4); i++)
6688 aarch64_set_vec_u16 (cpu, vd, i, clz (aarch64_get_vec_u16 (cpu, vn, i), 16));
6689 break;
6690 case 2:
6691 for (i = 0; i < (full ? 4 : 2); i++)
6692 aarch64_set_vec_u32 (cpu, vd, i, clz (aarch64_get_vec_u32 (cpu, vn, i), 32));
6693 break;
6694 case 3:
6695 if (! full)
6696 HALT_UNALLOC;
6697 aarch64_set_vec_u64 (cpu, vd, 0, clz (aarch64_get_vec_u64 (cpu, vn, 0), 64));
6698 aarch64_set_vec_u64 (cpu, vd, 1, clz (aarch64_get_vec_u64 (cpu, vn, 1), 64));
6699 break;
6700 }
6701 }
6702
6703 static void
6704 do_vec_MOV_element (sim_cpu *cpu)
6705 {
6706 /* instr[31,21] = 0110 1110 000
6707 instr[20,16] = size & dest index
6708 instr[15] = 0
6709 instr[14,11] = source index
6710 instr[10] = 1
6711 instr[9,5] = Vs
6712 instr[4.0] = Vd. */
6713
6714 unsigned vs = INSTR (9, 5);
6715 unsigned vd = INSTR (4, 0);
6716 unsigned src_index;
6717 unsigned dst_index;
6718
6719 NYI_assert (31, 21, 0x370);
6720 NYI_assert (15, 15, 0);
6721 NYI_assert (10, 10, 1);
6722
6723 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
6724 if (INSTR (16, 16))
6725 {
6726 /* Move a byte. */
6727 src_index = INSTR (14, 11);
6728 dst_index = INSTR (20, 17);
6729 aarch64_set_vec_u8 (cpu, vd, dst_index,
6730 aarch64_get_vec_u8 (cpu, vs, src_index));
6731 }
6732 else if (INSTR (17, 17))
6733 {
6734 /* Move 16-bits. */
6735 NYI_assert (11, 11, 0);
6736 src_index = INSTR (14, 12);
6737 dst_index = INSTR (20, 18);
6738 aarch64_set_vec_u16 (cpu, vd, dst_index,
6739 aarch64_get_vec_u16 (cpu, vs, src_index));
6740 }
6741 else if (INSTR (18, 18))
6742 {
6743 /* Move 32-bits. */
6744 NYI_assert (12, 11, 0);
6745 src_index = INSTR (14, 13);
6746 dst_index = INSTR (20, 19);
6747 aarch64_set_vec_u32 (cpu, vd, dst_index,
6748 aarch64_get_vec_u32 (cpu, vs, src_index));
6749 }
6750 else
6751 {
6752 NYI_assert (19, 19, 1);
6753 NYI_assert (13, 11, 0);
6754 src_index = INSTR (14, 14);
6755 dst_index = INSTR (20, 20);
6756 aarch64_set_vec_u64 (cpu, vd, dst_index,
6757 aarch64_get_vec_u64 (cpu, vs, src_index));
6758 }
6759 }
6760
6761 static void
6762 do_vec_REV32 (sim_cpu *cpu)
6763 {
6764 /* instr[31] = 0
6765 instr[30] = full/half
6766 instr[29,24] = 10 1110
6767 instr[23,22] = size
6768 instr[21,10] = 10 0000 0000 10
6769 instr[9,5] = Rn
6770 instr[4,0] = Rd. */
6771
6772 unsigned rn = INSTR (9, 5);
6773 unsigned rd = INSTR (4, 0);
6774 unsigned size = INSTR (23, 22);
6775 unsigned full = INSTR (30, 30);
6776 unsigned i;
6777 FRegister val;
6778
6779 NYI_assert (29, 24, 0x2E);
6780 NYI_assert (21, 10, 0x802);
6781
6782 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
6783 switch (size)
6784 {
6785 case 0:
6786 for (i = 0; i < (full ? 16 : 8); i++)
6787 val.b[i ^ 0x3] = aarch64_get_vec_u8 (cpu, rn, i);
6788 break;
6789
6790 case 1:
6791 for (i = 0; i < (full ? 8 : 4); i++)
6792 val.h[i ^ 0x1] = aarch64_get_vec_u16 (cpu, rn, i);
6793 break;
6794
6795 default:
6796 HALT_UNALLOC;
6797 }
6798
6799 aarch64_set_vec_u64 (cpu, rd, 0, val.v[0]);
6800 if (full)
6801 aarch64_set_vec_u64 (cpu, rd, 1, val.v[1]);
6802 }
6803
6804 static void
6805 do_vec_EXT (sim_cpu *cpu)
6806 {
6807 /* instr[31] = 0
6808 instr[30] = full/half
6809 instr[29,21] = 10 1110 000
6810 instr[20,16] = Vm
6811 instr[15] = 0
6812 instr[14,11] = source index
6813 instr[10] = 0
6814 instr[9,5] = Vn
6815 instr[4.0] = Vd. */
6816
6817 unsigned vm = INSTR (20, 16);
6818 unsigned vn = INSTR (9, 5);
6819 unsigned vd = INSTR (4, 0);
6820 unsigned src_index = INSTR (14, 11);
6821 unsigned full = INSTR (30, 30);
6822 unsigned i;
6823 unsigned j;
6824 FRegister val;
6825
6826 NYI_assert (31, 21, 0x370);
6827 NYI_assert (15, 15, 0);
6828 NYI_assert (10, 10, 0);
6829
6830 if (!full && (src_index & 0x8))
6831 HALT_UNALLOC;
6832
6833 j = 0;
6834
6835 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
6836 for (i = src_index; i < (full ? 16 : 8); i++)
6837 val.b[j ++] = aarch64_get_vec_u8 (cpu, vn, i);
6838 for (i = 0; i < src_index; i++)
6839 val.b[j ++] = aarch64_get_vec_u8 (cpu, vm, i);
6840
6841 aarch64_set_vec_u64 (cpu, vd, 0, val.v[0]);
6842 if (full)
6843 aarch64_set_vec_u64 (cpu, vd, 1, val.v[1]);
6844 }
6845
6846 static void
6847 dexAdvSIMD0 (sim_cpu *cpu)
6848 {
6849 /* instr [28,25] = 0 111. */
6850 if ( INSTR (15, 10) == 0x07
6851 && (INSTR (9, 5) ==
6852 INSTR (20, 16)))
6853 {
6854 if (INSTR (31, 21) == 0x075
6855 || INSTR (31, 21) == 0x275)
6856 {
6857 do_vec_MOV_whole_vector (cpu);
6858 return;
6859 }
6860 }
6861
6862 if (INSTR (29, 19) == 0x1E0)
6863 {
6864 do_vec_MOV_immediate (cpu);
6865 return;
6866 }
6867
6868 if (INSTR (29, 19) == 0x5E0)
6869 {
6870 do_vec_MVNI (cpu);
6871 return;
6872 }
6873
6874 if (INSTR (29, 19) == 0x1C0
6875 || INSTR (29, 19) == 0x1C1)
6876 {
6877 if (INSTR (15, 10) == 0x03)
6878 {
6879 do_vec_DUP_scalar_into_vector (cpu);
6880 return;
6881 }
6882 }
6883
6884 switch (INSTR (29, 24))
6885 {
6886 case 0x0E: do_vec_op1 (cpu); return;
6887 case 0x0F: do_vec_op2 (cpu); return;
6888
6889 case 0x2E:
6890 if (INSTR (21, 21) == 1)
6891 {
6892 switch (INSTR (15, 10))
6893 {
6894 case 0x02:
6895 do_vec_REV32 (cpu);
6896 return;
6897
6898 case 0x07:
6899 switch (INSTR (23, 22))
6900 {
6901 case 0: do_vec_EOR (cpu); return;
6902 case 1: do_vec_BSL (cpu); return;
6903 case 2:
6904 case 3: do_vec_bit (cpu); return;
6905 }
6906 break;
6907
6908 case 0x08: do_vec_sub_long (cpu); return;
6909 case 0x11: do_vec_USHL (cpu); return;
6910 case 0x12: do_vec_CLZ (cpu); return;
6911 case 0x16: do_vec_NOT (cpu); return;
6912 case 0x19: do_vec_max (cpu); return;
6913 case 0x1B: do_vec_min (cpu); return;
6914 case 0x21: do_vec_SUB (cpu); return;
6915 case 0x25: do_vec_MLS (cpu); return;
6916 case 0x31: do_vec_FminmaxNMP (cpu); return;
6917 case 0x35: do_vec_FADDP (cpu); return;
6918 case 0x37: do_vec_FMUL (cpu); return;
6919 case 0x3F: do_vec_FDIV (cpu); return;
6920
6921 case 0x3E:
6922 switch (INSTR (20, 16))
6923 {
6924 case 0x00: do_vec_FNEG (cpu); return;
6925 case 0x01: do_vec_FSQRT (cpu); return;
6926 default: HALT_NYI;
6927 }
6928
6929 case 0x0D:
6930 case 0x0F:
6931 case 0x22:
6932 case 0x23:
6933 case 0x26:
6934 case 0x2A:
6935 case 0x32:
6936 case 0x36:
6937 case 0x39:
6938 case 0x3A:
6939 do_vec_compare (cpu); return;
6940
6941 default:
6942 break;
6943 }
6944 }
6945
6946 if (INSTR (31, 21) == 0x370)
6947 {
6948 if (INSTR (10, 10))
6949 do_vec_MOV_element (cpu);
6950 else
6951 do_vec_EXT (cpu);
6952 return;
6953 }
6954
6955 switch (INSTR (21, 10))
6956 {
6957 case 0x82E: do_vec_neg (cpu); return;
6958 case 0x87E: do_vec_sqrt (cpu); return;
6959 default:
6960 if (INSTR (15, 10) == 0x30)
6961 {
6962 do_vec_mull (cpu);
6963 return;
6964 }
6965 break;
6966 }
6967 break;
6968
6969 case 0x2f:
6970 switch (INSTR (15, 10))
6971 {
6972 case 0x01: do_vec_SSHR_USHR (cpu); return;
6973 case 0x10:
6974 case 0x12: do_vec_mls_indexed (cpu); return;
6975 case 0x29: do_vec_xtl (cpu); return;
6976 default:
6977 HALT_NYI;
6978 }
6979
6980 default:
6981 break;
6982 }
6983
6984 HALT_NYI;
6985 }
6986
6987 /* 3 sources. */
6988
6989 /* Float multiply add. */
6990 static void
6991 fmadds (sim_cpu *cpu)
6992 {
6993 unsigned sa = INSTR (14, 10);
6994 unsigned sm = INSTR (20, 16);
6995 unsigned sn = INSTR ( 9, 5);
6996 unsigned sd = INSTR ( 4, 0);
6997
6998 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
6999 aarch64_set_FP_float (cpu, sd, aarch64_get_FP_float (cpu, sa)
7000 + aarch64_get_FP_float (cpu, sn)
7001 * aarch64_get_FP_float (cpu, sm));
7002 }
7003
7004 /* Double multiply add. */
7005 static void
7006 fmaddd (sim_cpu *cpu)
7007 {
7008 unsigned sa = INSTR (14, 10);
7009 unsigned sm = INSTR (20, 16);
7010 unsigned sn = INSTR ( 9, 5);
7011 unsigned sd = INSTR ( 4, 0);
7012
7013 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7014 aarch64_set_FP_double (cpu, sd, aarch64_get_FP_double (cpu, sa)
7015 + aarch64_get_FP_double (cpu, sn)
7016 * aarch64_get_FP_double (cpu, sm));
7017 }
7018
7019 /* Float multiply subtract. */
7020 static void
7021 fmsubs (sim_cpu *cpu)
7022 {
7023 unsigned sa = INSTR (14, 10);
7024 unsigned sm = INSTR (20, 16);
7025 unsigned sn = INSTR ( 9, 5);
7026 unsigned sd = INSTR ( 4, 0);
7027
7028 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7029 aarch64_set_FP_float (cpu, sd, aarch64_get_FP_float (cpu, sa)
7030 - aarch64_get_FP_float (cpu, sn)
7031 * aarch64_get_FP_float (cpu, sm));
7032 }
7033
7034 /* Double multiply subtract. */
7035 static void
7036 fmsubd (sim_cpu *cpu)
7037 {
7038 unsigned sa = INSTR (14, 10);
7039 unsigned sm = INSTR (20, 16);
7040 unsigned sn = INSTR ( 9, 5);
7041 unsigned sd = INSTR ( 4, 0);
7042
7043 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7044 aarch64_set_FP_double (cpu, sd, aarch64_get_FP_double (cpu, sa)
7045 - aarch64_get_FP_double (cpu, sn)
7046 * aarch64_get_FP_double (cpu, sm));
7047 }
7048
7049 /* Float negative multiply add. */
7050 static void
7051 fnmadds (sim_cpu *cpu)
7052 {
7053 unsigned sa = INSTR (14, 10);
7054 unsigned sm = INSTR (20, 16);
7055 unsigned sn = INSTR ( 9, 5);
7056 unsigned sd = INSTR ( 4, 0);
7057
7058 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7059 aarch64_set_FP_float (cpu, sd, - aarch64_get_FP_float (cpu, sa)
7060 + (- aarch64_get_FP_float (cpu, sn))
7061 * aarch64_get_FP_float (cpu, sm));
7062 }
7063
7064 /* Double negative multiply add. */
7065 static void
7066 fnmaddd (sim_cpu *cpu)
7067 {
7068 unsigned sa = INSTR (14, 10);
7069 unsigned sm = INSTR (20, 16);
7070 unsigned sn = INSTR ( 9, 5);
7071 unsigned sd = INSTR ( 4, 0);
7072
7073 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7074 aarch64_set_FP_double (cpu, sd, - aarch64_get_FP_double (cpu, sa)
7075 + (- aarch64_get_FP_double (cpu, sn))
7076 * aarch64_get_FP_double (cpu, sm));
7077 }
7078
7079 /* Float negative multiply subtract. */
7080 static void
7081 fnmsubs (sim_cpu *cpu)
7082 {
7083 unsigned sa = INSTR (14, 10);
7084 unsigned sm = INSTR (20, 16);
7085 unsigned sn = INSTR ( 9, 5);
7086 unsigned sd = INSTR ( 4, 0);
7087
7088 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7089 aarch64_set_FP_float (cpu, sd, - aarch64_get_FP_float (cpu, sa)
7090 + aarch64_get_FP_float (cpu, sn)
7091 * aarch64_get_FP_float (cpu, sm));
7092 }
7093
7094 /* Double negative multiply subtract. */
7095 static void
7096 fnmsubd (sim_cpu *cpu)
7097 {
7098 unsigned sa = INSTR (14, 10);
7099 unsigned sm = INSTR (20, 16);
7100 unsigned sn = INSTR ( 9, 5);
7101 unsigned sd = INSTR ( 4, 0);
7102
7103 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7104 aarch64_set_FP_double (cpu, sd, - aarch64_get_FP_double (cpu, sa)
7105 + aarch64_get_FP_double (cpu, sn)
7106 * aarch64_get_FP_double (cpu, sm));
7107 }
7108
7109 static void
7110 dexSimpleFPDataProc3Source (sim_cpu *cpu)
7111 {
7112 /* instr[31] ==> M : 0 ==> OK, 1 ==> UNALLOC
7113 instr[30] = 0
7114 instr[29] ==> S : 0 ==> OK, 1 ==> UNALLOC
7115 instr[28,25] = 1111
7116 instr[24] = 1
7117 instr[23,22] ==> type : 0 ==> single, 01 ==> double, 1x ==> UNALLOC
7118 instr[21] ==> o1 : 0 ==> unnegated, 1 ==> negated
7119 instr[15] ==> o2 : 0 ==> ADD, 1 ==> SUB */
7120
7121 uint32_t M_S = (INSTR (31, 31) << 1) | INSTR (29, 29);
7122 /* dispatch on combined type:o1:o2. */
7123 uint32_t dispatch = (INSTR (23, 21) << 1) | INSTR (15, 15);
7124
7125 if (M_S != 0)
7126 HALT_UNALLOC;
7127
7128 switch (dispatch)
7129 {
7130 case 0: fmadds (cpu); return;
7131 case 1: fmsubs (cpu); return;
7132 case 2: fnmadds (cpu); return;
7133 case 3: fnmsubs (cpu); return;
7134 case 4: fmaddd (cpu); return;
7135 case 5: fmsubd (cpu); return;
7136 case 6: fnmaddd (cpu); return;
7137 case 7: fnmsubd (cpu); return;
7138 default:
7139 /* type > 1 is currently unallocated. */
7140 HALT_UNALLOC;
7141 }
7142 }
7143
7144 static void
7145 dexSimpleFPFixedConvert (sim_cpu *cpu)
7146 {
7147 HALT_NYI;
7148 }
7149
7150 static void
7151 dexSimpleFPCondCompare (sim_cpu *cpu)
7152 {
7153 /* instr [31,23] = 0001 1110 0
7154 instr [22] = type
7155 instr [21] = 1
7156 instr [20,16] = Rm
7157 instr [15,12] = condition
7158 instr [11,10] = 01
7159 instr [9,5] = Rn
7160 instr [4] = 0
7161 instr [3,0] = nzcv */
7162
7163 unsigned rm = INSTR (20, 16);
7164 unsigned rn = INSTR (9, 5);
7165
7166 NYI_assert (31, 23, 0x3C);
7167 NYI_assert (11, 10, 0x1);
7168 NYI_assert (4, 4, 0);
7169
7170 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7171 if (! testConditionCode (cpu, INSTR (15, 12)))
7172 {
7173 aarch64_set_CPSR (cpu, INSTR (3, 0));
7174 return;
7175 }
7176
7177 if (INSTR (22, 22))
7178 {
7179 /* Double precision. */
7180 double val1 = aarch64_get_vec_double (cpu, rn, 0);
7181 double val2 = aarch64_get_vec_double (cpu, rm, 0);
7182
7183 /* FIXME: Check for NaNs. */
7184 if (val1 == val2)
7185 aarch64_set_CPSR (cpu, (Z | C));
7186 else if (val1 < val2)
7187 aarch64_set_CPSR (cpu, N);
7188 else /* val1 > val2 */
7189 aarch64_set_CPSR (cpu, C);
7190 }
7191 else
7192 {
7193 /* Single precision. */
7194 float val1 = aarch64_get_vec_float (cpu, rn, 0);
7195 float val2 = aarch64_get_vec_float (cpu, rm, 0);
7196
7197 /* FIXME: Check for NaNs. */
7198 if (val1 == val2)
7199 aarch64_set_CPSR (cpu, (Z | C));
7200 else if (val1 < val2)
7201 aarch64_set_CPSR (cpu, N);
7202 else /* val1 > val2 */
7203 aarch64_set_CPSR (cpu, C);
7204 }
7205 }
7206
7207 /* 2 sources. */
7208
7209 /* Float add. */
7210 static void
7211 fadds (sim_cpu *cpu)
7212 {
7213 unsigned sm = INSTR (20, 16);
7214 unsigned sn = INSTR ( 9, 5);
7215 unsigned sd = INSTR ( 4, 0);
7216
7217 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7218 aarch64_set_FP_float (cpu, sd, aarch64_get_FP_float (cpu, sn)
7219 + aarch64_get_FP_float (cpu, sm));
7220 }
7221
7222 /* Double add. */
7223 static void
7224 faddd (sim_cpu *cpu)
7225 {
7226 unsigned sm = INSTR (20, 16);
7227 unsigned sn = INSTR ( 9, 5);
7228 unsigned sd = INSTR ( 4, 0);
7229
7230 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7231 aarch64_set_FP_double (cpu, sd, aarch64_get_FP_double (cpu, sn)
7232 + aarch64_get_FP_double (cpu, sm));
7233 }
7234
7235 /* Float divide. */
7236 static void
7237 fdivs (sim_cpu *cpu)
7238 {
7239 unsigned sm = INSTR (20, 16);
7240 unsigned sn = INSTR ( 9, 5);
7241 unsigned sd = INSTR ( 4, 0);
7242
7243 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7244 aarch64_set_FP_float (cpu, sd, aarch64_get_FP_float (cpu, sn)
7245 / aarch64_get_FP_float (cpu, sm));
7246 }
7247
7248 /* Double divide. */
7249 static void
7250 fdivd (sim_cpu *cpu)
7251 {
7252 unsigned sm = INSTR (20, 16);
7253 unsigned sn = INSTR ( 9, 5);
7254 unsigned sd = INSTR ( 4, 0);
7255
7256 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7257 aarch64_set_FP_double (cpu, sd, aarch64_get_FP_double (cpu, sn)
7258 / aarch64_get_FP_double (cpu, sm));
7259 }
7260
7261 /* Float multiply. */
7262 static void
7263 fmuls (sim_cpu *cpu)
7264 {
7265 unsigned sm = INSTR (20, 16);
7266 unsigned sn = INSTR ( 9, 5);
7267 unsigned sd = INSTR ( 4, 0);
7268
7269 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7270 aarch64_set_FP_float (cpu, sd, aarch64_get_FP_float (cpu, sn)
7271 * aarch64_get_FP_float (cpu, sm));
7272 }
7273
7274 /* Double multiply. */
7275 static void
7276 fmuld (sim_cpu *cpu)
7277 {
7278 unsigned sm = INSTR (20, 16);
7279 unsigned sn = INSTR ( 9, 5);
7280 unsigned sd = INSTR ( 4, 0);
7281
7282 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7283 aarch64_set_FP_double (cpu, sd, aarch64_get_FP_double (cpu, sn)
7284 * aarch64_get_FP_double (cpu, sm));
7285 }
7286
7287 /* Float negate and multiply. */
7288 static void
7289 fnmuls (sim_cpu *cpu)
7290 {
7291 unsigned sm = INSTR (20, 16);
7292 unsigned sn = INSTR ( 9, 5);
7293 unsigned sd = INSTR ( 4, 0);
7294
7295 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7296 aarch64_set_FP_float (cpu, sd, - (aarch64_get_FP_float (cpu, sn)
7297 * aarch64_get_FP_float (cpu, sm)));
7298 }
7299
7300 /* Double negate and multiply. */
7301 static void
7302 fnmuld (sim_cpu *cpu)
7303 {
7304 unsigned sm = INSTR (20, 16);
7305 unsigned sn = INSTR ( 9, 5);
7306 unsigned sd = INSTR ( 4, 0);
7307
7308 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7309 aarch64_set_FP_double (cpu, sd, - (aarch64_get_FP_double (cpu, sn)
7310 * aarch64_get_FP_double (cpu, sm)));
7311 }
7312
7313 /* Float subtract. */
7314 static void
7315 fsubs (sim_cpu *cpu)
7316 {
7317 unsigned sm = INSTR (20, 16);
7318 unsigned sn = INSTR ( 9, 5);
7319 unsigned sd = INSTR ( 4, 0);
7320
7321 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7322 aarch64_set_FP_float (cpu, sd, aarch64_get_FP_float (cpu, sn)
7323 - aarch64_get_FP_float (cpu, sm));
7324 }
7325
7326 /* Double subtract. */
7327 static void
7328 fsubd (sim_cpu *cpu)
7329 {
7330 unsigned sm = INSTR (20, 16);
7331 unsigned sn = INSTR ( 9, 5);
7332 unsigned sd = INSTR ( 4, 0);
7333
7334 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7335 aarch64_set_FP_double (cpu, sd, aarch64_get_FP_double (cpu, sn)
7336 - aarch64_get_FP_double (cpu, sm));
7337 }
7338
7339 static void
7340 do_FMINNM (sim_cpu *cpu)
7341 {
7342 /* instr[31,23] = 0 0011 1100
7343 instr[22] = float(0)/double(1)
7344 instr[21] = 1
7345 instr[20,16] = Sm
7346 instr[15,10] = 01 1110
7347 instr[9,5] = Sn
7348 instr[4,0] = Cpu */
7349
7350 unsigned sm = INSTR (20, 16);
7351 unsigned sn = INSTR ( 9, 5);
7352 unsigned sd = INSTR ( 4, 0);
7353
7354 NYI_assert (31, 23, 0x03C);
7355 NYI_assert (15, 10, 0x1E);
7356
7357 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7358 if (INSTR (22, 22))
7359 aarch64_set_FP_double (cpu, sd,
7360 dminnm (aarch64_get_FP_double (cpu, sn),
7361 aarch64_get_FP_double (cpu, sm)));
7362 else
7363 aarch64_set_FP_float (cpu, sd,
7364 fminnm (aarch64_get_FP_float (cpu, sn),
7365 aarch64_get_FP_float (cpu, sm)));
7366 }
7367
7368 static void
7369 do_FMAXNM (sim_cpu *cpu)
7370 {
7371 /* instr[31,23] = 0 0011 1100
7372 instr[22] = float(0)/double(1)
7373 instr[21] = 1
7374 instr[20,16] = Sm
7375 instr[15,10] = 01 1010
7376 instr[9,5] = Sn
7377 instr[4,0] = Cpu */
7378
7379 unsigned sm = INSTR (20, 16);
7380 unsigned sn = INSTR ( 9, 5);
7381 unsigned sd = INSTR ( 4, 0);
7382
7383 NYI_assert (31, 23, 0x03C);
7384 NYI_assert (15, 10, 0x1A);
7385
7386 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7387 if (INSTR (22, 22))
7388 aarch64_set_FP_double (cpu, sd,
7389 dmaxnm (aarch64_get_FP_double (cpu, sn),
7390 aarch64_get_FP_double (cpu, sm)));
7391 else
7392 aarch64_set_FP_float (cpu, sd,
7393 fmaxnm (aarch64_get_FP_float (cpu, sn),
7394 aarch64_get_FP_float (cpu, sm)));
7395 }
7396
7397 static void
7398 dexSimpleFPDataProc2Source (sim_cpu *cpu)
7399 {
7400 /* instr[31] ==> M : 0 ==> OK, 1 ==> UNALLOC
7401 instr[30] = 0
7402 instr[29] ==> S : 0 ==> OK, 1 ==> UNALLOC
7403 instr[28,25] = 1111
7404 instr[24] = 0
7405 instr[23,22] ==> type : 0 ==> single, 01 ==> double, 1x ==> UNALLOC
7406 instr[21] = 1
7407 instr[20,16] = Vm
7408 instr[15,12] ==> opcode : 0000 ==> FMUL, 0001 ==> FDIV
7409 0010 ==> FADD, 0011 ==> FSUB,
7410 0100 ==> FMAX, 0101 ==> FMIN
7411 0110 ==> FMAXNM, 0111 ==> FMINNM
7412 1000 ==> FNMUL, ow ==> UNALLOC
7413 instr[11,10] = 10
7414 instr[9,5] = Vn
7415 instr[4,0] = Vd */
7416
7417 uint32_t M_S = (INSTR (31, 31) << 1) | INSTR (29, 29);
7418 uint32_t type = INSTR (23, 22);
7419 /* Dispatch on opcode. */
7420 uint32_t dispatch = INSTR (15, 12);
7421
7422 if (type > 1)
7423 HALT_UNALLOC;
7424
7425 if (M_S != 0)
7426 HALT_UNALLOC;
7427
7428 if (type)
7429 switch (dispatch)
7430 {
7431 case 0: fmuld (cpu); return;
7432 case 1: fdivd (cpu); return;
7433 case 2: faddd (cpu); return;
7434 case 3: fsubd (cpu); return;
7435 case 6: do_FMAXNM (cpu); return;
7436 case 7: do_FMINNM (cpu); return;
7437 case 8: fnmuld (cpu); return;
7438
7439 /* Have not yet implemented fmax and fmin. */
7440 case 4:
7441 case 5:
7442 HALT_NYI;
7443
7444 default:
7445 HALT_UNALLOC;
7446 }
7447 else /* type == 0 => floats. */
7448 switch (dispatch)
7449 {
7450 case 0: fmuls (cpu); return;
7451 case 1: fdivs (cpu); return;
7452 case 2: fadds (cpu); return;
7453 case 3: fsubs (cpu); return;
7454 case 6: do_FMAXNM (cpu); return;
7455 case 7: do_FMINNM (cpu); return;
7456 case 8: fnmuls (cpu); return;
7457
7458 case 4:
7459 case 5:
7460 HALT_NYI;
7461
7462 default:
7463 HALT_UNALLOC;
7464 }
7465 }
7466
7467 static void
7468 dexSimpleFPCondSelect (sim_cpu *cpu)
7469 {
7470 /* FCSEL
7471 instr[31,23] = 0 0011 1100
7472 instr[22] = 0=>single 1=>double
7473 instr[21] = 1
7474 instr[20,16] = Sm
7475 instr[15,12] = cond
7476 instr[11,10] = 11
7477 instr[9,5] = Sn
7478 instr[4,0] = Cpu */
7479 unsigned sm = INSTR (20, 16);
7480 unsigned sn = INSTR ( 9, 5);
7481 unsigned sd = INSTR ( 4, 0);
7482 uint32_t set = testConditionCode (cpu, INSTR (15, 12));
7483
7484 NYI_assert (31, 23, 0x03C);
7485 NYI_assert (11, 10, 0x3);
7486
7487 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7488 if (INSTR (22, 22))
7489 aarch64_set_FP_double (cpu, sd, set ? sn : sm);
7490 else
7491 aarch64_set_FP_float (cpu, sd, set ? sn : sm);
7492 }
7493
7494 /* Store 32 bit unscaled signed 9 bit. */
7495 static void
7496 fsturs (sim_cpu *cpu, int32_t offset)
7497 {
7498 unsigned int rn = INSTR (9, 5);
7499 unsigned int st = INSTR (4, 0);
7500
7501 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7502 aarch64_set_mem_u32 (cpu, aarch64_get_reg_u64 (cpu, st, 1) + offset,
7503 aarch64_get_vec_u32 (cpu, rn, 0));
7504 }
7505
7506 /* Store 64 bit unscaled signed 9 bit. */
7507 static void
7508 fsturd (sim_cpu *cpu, int32_t offset)
7509 {
7510 unsigned int rn = INSTR (9, 5);
7511 unsigned int st = INSTR (4, 0);
7512
7513 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7514 aarch64_set_mem_u64 (cpu, aarch64_get_reg_u64 (cpu, st, 1) + offset,
7515 aarch64_get_vec_u64 (cpu, rn, 0));
7516 }
7517
7518 /* Store 128 bit unscaled signed 9 bit. */
7519 static void
7520 fsturq (sim_cpu *cpu, int32_t offset)
7521 {
7522 unsigned int rn = INSTR (9, 5);
7523 unsigned int st = INSTR (4, 0);
7524 FRegister a;
7525
7526 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7527 aarch64_get_FP_long_double (cpu, rn, & a);
7528 aarch64_set_mem_long_double (cpu,
7529 aarch64_get_reg_u64 (cpu, st, 1)
7530 + offset, a);
7531 }
7532
7533 /* TODO FP move register. */
7534
7535 /* 32 bit fp to fp move register. */
7536 static void
7537 ffmovs (sim_cpu *cpu)
7538 {
7539 unsigned int rn = INSTR (9, 5);
7540 unsigned int st = INSTR (4, 0);
7541
7542 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7543 aarch64_set_FP_float (cpu, st, aarch64_get_FP_float (cpu, rn));
7544 }
7545
7546 /* 64 bit fp to fp move register. */
7547 static void
7548 ffmovd (sim_cpu *cpu)
7549 {
7550 unsigned int rn = INSTR (9, 5);
7551 unsigned int st = INSTR (4, 0);
7552
7553 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7554 aarch64_set_FP_double (cpu, st, aarch64_get_FP_double (cpu, rn));
7555 }
7556
7557 /* 32 bit GReg to Vec move register. */
7558 static void
7559 fgmovs (sim_cpu *cpu)
7560 {
7561 unsigned int rn = INSTR (9, 5);
7562 unsigned int st = INSTR (4, 0);
7563
7564 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7565 aarch64_set_vec_u32 (cpu, st, 0, aarch64_get_reg_u32 (cpu, rn, NO_SP));
7566 }
7567
7568 /* 64 bit g to fp move register. */
7569 static void
7570 fgmovd (sim_cpu *cpu)
7571 {
7572 unsigned int rn = INSTR (9, 5);
7573 unsigned int st = INSTR (4, 0);
7574
7575 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7576 aarch64_set_vec_u64 (cpu, st, 0, aarch64_get_reg_u64 (cpu, rn, NO_SP));
7577 }
7578
7579 /* 32 bit fp to g move register. */
7580 static void
7581 gfmovs (sim_cpu *cpu)
7582 {
7583 unsigned int rn = INSTR (9, 5);
7584 unsigned int st = INSTR (4, 0);
7585
7586 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7587 aarch64_set_reg_u64 (cpu, st, NO_SP, aarch64_get_vec_u32 (cpu, rn, 0));
7588 }
7589
7590 /* 64 bit fp to g move register. */
7591 static void
7592 gfmovd (sim_cpu *cpu)
7593 {
7594 unsigned int rn = INSTR (9, 5);
7595 unsigned int st = INSTR (4, 0);
7596
7597 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7598 aarch64_set_reg_u64 (cpu, st, NO_SP, aarch64_get_vec_u64 (cpu, rn, 0));
7599 }
7600
7601 /* FP move immediate
7602
7603 These install an immediate 8 bit value in the target register
7604 where the 8 bits comprise 1 sign bit, 4 bits of fraction and a 3
7605 bit exponent. */
7606
7607 static void
7608 fmovs (sim_cpu *cpu)
7609 {
7610 unsigned int sd = INSTR (4, 0);
7611 uint32_t imm = INSTR (20, 13);
7612 float f = fp_immediate_for_encoding_32 (imm);
7613
7614 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7615 aarch64_set_FP_float (cpu, sd, f);
7616 }
7617
7618 static void
7619 fmovd (sim_cpu *cpu)
7620 {
7621 unsigned int sd = INSTR (4, 0);
7622 uint32_t imm = INSTR (20, 13);
7623 double d = fp_immediate_for_encoding_64 (imm);
7624
7625 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7626 aarch64_set_FP_double (cpu, sd, d);
7627 }
7628
7629 static void
7630 dexSimpleFPImmediate (sim_cpu *cpu)
7631 {
7632 /* instr[31,23] == 00111100
7633 instr[22] == type : single(0)/double(1)
7634 instr[21] == 1
7635 instr[20,13] == imm8
7636 instr[12,10] == 100
7637 instr[9,5] == imm5 : 00000 ==> PK, ow ==> UNALLOC
7638 instr[4,0] == Rd */
7639 uint32_t imm5 = INSTR (9, 5);
7640
7641 NYI_assert (31, 23, 0x3C);
7642
7643 if (imm5 != 0)
7644 HALT_UNALLOC;
7645
7646 if (INSTR (22, 22))
7647 fmovd (cpu);
7648 else
7649 fmovs (cpu);
7650 }
7651
7652 /* TODO specific decode and execute for group Load Store. */
7653
7654 /* TODO FP load/store single register (unscaled offset). */
7655
7656 /* TODO load 8 bit unscaled signed 9 bit. */
7657 /* TODO load 16 bit unscaled signed 9 bit. */
7658
7659 /* Load 32 bit unscaled signed 9 bit. */
7660 static void
7661 fldurs (sim_cpu *cpu, int32_t offset)
7662 {
7663 unsigned int rn = INSTR (9, 5);
7664 unsigned int st = INSTR (4, 0);
7665
7666 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7667 aarch64_set_vec_u32 (cpu, st, 0, aarch64_get_mem_u32
7668 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset));
7669 }
7670
7671 /* Load 64 bit unscaled signed 9 bit. */
7672 static void
7673 fldurd (sim_cpu *cpu, int32_t offset)
7674 {
7675 unsigned int rn = INSTR (9, 5);
7676 unsigned int st = INSTR (4, 0);
7677
7678 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7679 aarch64_set_vec_u64 (cpu, st, 0, aarch64_get_mem_u64
7680 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset));
7681 }
7682
7683 /* Load 128 bit unscaled signed 9 bit. */
7684 static void
7685 fldurq (sim_cpu *cpu, int32_t offset)
7686 {
7687 unsigned int rn = INSTR (9, 5);
7688 unsigned int st = INSTR (4, 0);
7689 FRegister a;
7690 uint64_t addr = aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset;
7691
7692 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7693 aarch64_get_mem_long_double (cpu, addr, & a);
7694 aarch64_set_FP_long_double (cpu, st, a);
7695 }
7696
7697 /* TODO store 8 bit unscaled signed 9 bit. */
7698 /* TODO store 16 bit unscaled signed 9 bit. */
7699
7700
7701 /* 1 source. */
7702
7703 /* Float absolute value. */
7704 static void
7705 fabss (sim_cpu *cpu)
7706 {
7707 unsigned sn = INSTR (9, 5);
7708 unsigned sd = INSTR (4, 0);
7709 float value = aarch64_get_FP_float (cpu, sn);
7710
7711 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7712 aarch64_set_FP_float (cpu, sd, fabsf (value));
7713 }
7714
7715 /* Double absolute value. */
7716 static void
7717 fabcpu (sim_cpu *cpu)
7718 {
7719 unsigned sn = INSTR (9, 5);
7720 unsigned sd = INSTR (4, 0);
7721 double value = aarch64_get_FP_double (cpu, sn);
7722
7723 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7724 aarch64_set_FP_double (cpu, sd, fabs (value));
7725 }
7726
7727 /* Float negative value. */
7728 static void
7729 fnegs (sim_cpu *cpu)
7730 {
7731 unsigned sn = INSTR (9, 5);
7732 unsigned sd = INSTR (4, 0);
7733
7734 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7735 aarch64_set_FP_float (cpu, sd, - aarch64_get_FP_float (cpu, sn));
7736 }
7737
7738 /* Double negative value. */
7739 static void
7740 fnegd (sim_cpu *cpu)
7741 {
7742 unsigned sn = INSTR (9, 5);
7743 unsigned sd = INSTR (4, 0);
7744
7745 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7746 aarch64_set_FP_double (cpu, sd, - aarch64_get_FP_double (cpu, sn));
7747 }
7748
7749 /* Float square root. */
7750 static void
7751 fsqrts (sim_cpu *cpu)
7752 {
7753 unsigned sn = INSTR (9, 5);
7754 unsigned sd = INSTR (4, 0);
7755
7756 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7757 aarch64_set_FP_float (cpu, sd, sqrtf (aarch64_get_FP_float (cpu, sn)));
7758 }
7759
7760 /* Double square root. */
7761 static void
7762 fsqrtd (sim_cpu *cpu)
7763 {
7764 unsigned sn = INSTR (9, 5);
7765 unsigned sd = INSTR (4, 0);
7766
7767 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7768 aarch64_set_FP_double (cpu, sd,
7769 sqrt (aarch64_get_FP_double (cpu, sn)));
7770 }
7771
7772 /* Convert double to float. */
7773 static void
7774 fcvtds (sim_cpu *cpu)
7775 {
7776 unsigned sn = INSTR (9, 5);
7777 unsigned sd = INSTR (4, 0);
7778
7779 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7780 aarch64_set_FP_float (cpu, sd, (float) aarch64_get_FP_double (cpu, sn));
7781 }
7782
7783 /* Convert float to double. */
7784 static void
7785 fcvtcpu (sim_cpu *cpu)
7786 {
7787 unsigned sn = INSTR (9, 5);
7788 unsigned sd = INSTR (4, 0);
7789
7790 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7791 aarch64_set_FP_double (cpu, sd, (double) aarch64_get_FP_float (cpu, sn));
7792 }
7793
7794 static void
7795 do_FRINT (sim_cpu *cpu)
7796 {
7797 /* instr[31,23] = 0001 1110 0
7798 instr[22] = single(0)/double(1)
7799 instr[21,18] = 1001
7800 instr[17,15] = rounding mode
7801 instr[14,10] = 10000
7802 instr[9,5] = source
7803 instr[4,0] = dest */
7804
7805 float val;
7806 unsigned rs = INSTR (9, 5);
7807 unsigned rd = INSTR (4, 0);
7808 unsigned int rmode = INSTR (17, 15);
7809
7810 NYI_assert (31, 23, 0x03C);
7811 NYI_assert (21, 18, 0x9);
7812 NYI_assert (14, 10, 0x10);
7813
7814 if (rmode == 6 || rmode == 7)
7815 /* FIXME: Add support for rmode == 6 exactness check. */
7816 rmode = uimm (aarch64_get_FPSR (cpu), 23, 22);
7817
7818 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7819 if (INSTR (22, 22))
7820 {
7821 double val = aarch64_get_FP_double (cpu, rs);
7822
7823 switch (rmode)
7824 {
7825 case 0: /* mode N: nearest or even. */
7826 {
7827 double rval = round (val);
7828
7829 if (val - rval == 0.5)
7830 {
7831 if (((rval / 2.0) * 2.0) != rval)
7832 rval += 1.0;
7833 }
7834
7835 aarch64_set_FP_double (cpu, rd, round (val));
7836 return;
7837 }
7838
7839 case 1: /* mode P: towards +inf. */
7840 if (val < 0.0)
7841 aarch64_set_FP_double (cpu, rd, trunc (val));
7842 else
7843 aarch64_set_FP_double (cpu, rd, round (val));
7844 return;
7845
7846 case 2: /* mode M: towards -inf. */
7847 if (val < 0.0)
7848 aarch64_set_FP_double (cpu, rd, round (val));
7849 else
7850 aarch64_set_FP_double (cpu, rd, trunc (val));
7851 return;
7852
7853 case 3: /* mode Z: towards 0. */
7854 aarch64_set_FP_double (cpu, rd, trunc (val));
7855 return;
7856
7857 case 4: /* mode A: away from 0. */
7858 aarch64_set_FP_double (cpu, rd, round (val));
7859 return;
7860
7861 case 6: /* mode X: use FPCR with exactness check. */
7862 case 7: /* mode I: use FPCR mode. */
7863 HALT_NYI;
7864
7865 default:
7866 HALT_UNALLOC;
7867 }
7868 }
7869
7870 val = aarch64_get_FP_float (cpu, rs);
7871
7872 switch (rmode)
7873 {
7874 case 0: /* mode N: nearest or even. */
7875 {
7876 float rval = roundf (val);
7877
7878 if (val - rval == 0.5)
7879 {
7880 if (((rval / 2.0) * 2.0) != rval)
7881 rval += 1.0;
7882 }
7883
7884 aarch64_set_FP_float (cpu, rd, rval);
7885 return;
7886 }
7887
7888 case 1: /* mode P: towards +inf. */
7889 if (val < 0.0)
7890 aarch64_set_FP_float (cpu, rd, truncf (val));
7891 else
7892 aarch64_set_FP_float (cpu, rd, roundf (val));
7893 return;
7894
7895 case 2: /* mode M: towards -inf. */
7896 if (val < 0.0)
7897 aarch64_set_FP_float (cpu, rd, truncf (val));
7898 else
7899 aarch64_set_FP_float (cpu, rd, roundf (val));
7900 return;
7901
7902 case 3: /* mode Z: towards 0. */
7903 aarch64_set_FP_float (cpu, rd, truncf (val));
7904 return;
7905
7906 case 4: /* mode A: away from 0. */
7907 aarch64_set_FP_float (cpu, rd, roundf (val));
7908 return;
7909
7910 case 6: /* mode X: use FPCR with exactness check. */
7911 case 7: /* mode I: use FPCR mode. */
7912 HALT_NYI;
7913
7914 default:
7915 HALT_UNALLOC;
7916 }
7917 }
7918
7919 /* Convert half to float. */
7920 static void
7921 do_FCVT_half_to_single (sim_cpu *cpu)
7922 {
7923 unsigned rn = INSTR (9, 5);
7924 unsigned rd = INSTR (4, 0);
7925
7926 NYI_assert (31, 10, 0x7B890);
7927
7928 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7929 aarch64_set_FP_float (cpu, rd, (float) aarch64_get_FP_half (cpu, rn));
7930 }
7931
7932 /* Convert half to double. */
7933 static void
7934 do_FCVT_half_to_double (sim_cpu *cpu)
7935 {
7936 unsigned rn = INSTR (9, 5);
7937 unsigned rd = INSTR (4, 0);
7938
7939 NYI_assert (31, 10, 0x7B8B0);
7940
7941 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7942 aarch64_set_FP_double (cpu, rd, (double) aarch64_get_FP_half (cpu, rn));
7943 }
7944
7945 static void
7946 do_FCVT_single_to_half (sim_cpu *cpu)
7947 {
7948 unsigned rn = INSTR (9, 5);
7949 unsigned rd = INSTR (4, 0);
7950
7951 NYI_assert (31, 10, 0x788F0);
7952
7953 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7954 aarch64_set_FP_half (cpu, rd, aarch64_get_FP_float (cpu, rn));
7955 }
7956
7957 /* Convert double to half. */
7958 static void
7959 do_FCVT_double_to_half (sim_cpu *cpu)
7960 {
7961 unsigned rn = INSTR (9, 5);
7962 unsigned rd = INSTR (4, 0);
7963
7964 NYI_assert (31, 10, 0x798F0);
7965
7966 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
7967 aarch64_set_FP_half (cpu, rd, (float) aarch64_get_FP_double (cpu, rn));
7968 }
7969
7970 static void
7971 dexSimpleFPDataProc1Source (sim_cpu *cpu)
7972 {
7973 /* instr[31] ==> M : 0 ==> OK, 1 ==> UNALLOC
7974 instr[30] = 0
7975 instr[29] ==> S : 0 ==> OK, 1 ==> UNALLOC
7976 instr[28,25] = 1111
7977 instr[24] = 0
7978 instr[23,22] ==> type : 00 ==> source is single,
7979 01 ==> source is double
7980 10 ==> UNALLOC
7981 11 ==> UNALLOC or source is half
7982 instr[21] = 1
7983 instr[20,15] ==> opcode : with type 00 or 01
7984 000000 ==> FMOV, 000001 ==> FABS,
7985 000010 ==> FNEG, 000011 ==> FSQRT,
7986 000100 ==> UNALLOC, 000101 ==> FCVT,(to single/double)
7987 000110 ==> UNALLOC, 000111 ==> FCVT (to half)
7988 001000 ==> FRINTN, 001001 ==> FRINTP,
7989 001010 ==> FRINTM, 001011 ==> FRINTZ,
7990 001100 ==> FRINTA, 001101 ==> UNALLOC
7991 001110 ==> FRINTX, 001111 ==> FRINTI
7992 with type 11
7993 000100 ==> FCVT (half-to-single)
7994 000101 ==> FCVT (half-to-double)
7995 instr[14,10] = 10000. */
7996
7997 uint32_t M_S = (INSTR (31, 31) << 1) | INSTR (29, 29);
7998 uint32_t type = INSTR (23, 22);
7999 uint32_t opcode = INSTR (20, 15);
8000
8001 if (M_S != 0)
8002 HALT_UNALLOC;
8003
8004 if (type == 3)
8005 {
8006 if (opcode == 4)
8007 do_FCVT_half_to_single (cpu);
8008 else if (opcode == 5)
8009 do_FCVT_half_to_double (cpu);
8010 else
8011 HALT_UNALLOC;
8012 return;
8013 }
8014
8015 if (type == 2)
8016 HALT_UNALLOC;
8017
8018 switch (opcode)
8019 {
8020 case 0:
8021 if (type)
8022 ffmovd (cpu);
8023 else
8024 ffmovs (cpu);
8025 return;
8026
8027 case 1:
8028 if (type)
8029 fabcpu (cpu);
8030 else
8031 fabss (cpu);
8032 return;
8033
8034 case 2:
8035 if (type)
8036 fnegd (cpu);
8037 else
8038 fnegs (cpu);
8039 return;
8040
8041 case 3:
8042 if (type)
8043 fsqrtd (cpu);
8044 else
8045 fsqrts (cpu);
8046 return;
8047
8048 case 4:
8049 if (type)
8050 fcvtds (cpu);
8051 else
8052 HALT_UNALLOC;
8053 return;
8054
8055 case 5:
8056 if (type)
8057 HALT_UNALLOC;
8058 fcvtcpu (cpu);
8059 return;
8060
8061 case 8: /* FRINTN etc. */
8062 case 9:
8063 case 10:
8064 case 11:
8065 case 12:
8066 case 14:
8067 case 15:
8068 do_FRINT (cpu);
8069 return;
8070
8071 case 7:
8072 if (INSTR (22, 22))
8073 do_FCVT_double_to_half (cpu);
8074 else
8075 do_FCVT_single_to_half (cpu);
8076 return;
8077
8078 case 13:
8079 HALT_NYI;
8080
8081 default:
8082 HALT_UNALLOC;
8083 }
8084 }
8085
8086 /* 32 bit signed int to float. */
8087 static void
8088 scvtf32 (sim_cpu *cpu)
8089 {
8090 unsigned rn = INSTR (9, 5);
8091 unsigned sd = INSTR (4, 0);
8092
8093 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8094 aarch64_set_FP_float
8095 (cpu, sd, (float) aarch64_get_reg_s32 (cpu, rn, NO_SP));
8096 }
8097
8098 /* signed int to float. */
8099 static void
8100 scvtf (sim_cpu *cpu)
8101 {
8102 unsigned rn = INSTR (9, 5);
8103 unsigned sd = INSTR (4, 0);
8104
8105 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8106 aarch64_set_FP_float
8107 (cpu, sd, (float) aarch64_get_reg_s64 (cpu, rn, NO_SP));
8108 }
8109
8110 /* 32 bit signed int to double. */
8111 static void
8112 scvtd32 (sim_cpu *cpu)
8113 {
8114 unsigned rn = INSTR (9, 5);
8115 unsigned sd = INSTR (4, 0);
8116
8117 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8118 aarch64_set_FP_double
8119 (cpu, sd, (double) aarch64_get_reg_s32 (cpu, rn, NO_SP));
8120 }
8121
8122 /* signed int to double. */
8123 static void
8124 scvtd (sim_cpu *cpu)
8125 {
8126 unsigned rn = INSTR (9, 5);
8127 unsigned sd = INSTR (4, 0);
8128
8129 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8130 aarch64_set_FP_double
8131 (cpu, sd, (double) aarch64_get_reg_s64 (cpu, rn, NO_SP));
8132 }
8133
8134 static const float FLOAT_INT_MAX = (float) INT_MAX;
8135 static const float FLOAT_INT_MIN = (float) INT_MIN;
8136 static const double DOUBLE_INT_MAX = (double) INT_MAX;
8137 static const double DOUBLE_INT_MIN = (double) INT_MIN;
8138 static const float FLOAT_LONG_MAX = (float) LONG_MAX;
8139 static const float FLOAT_LONG_MIN = (float) LONG_MIN;
8140 static const double DOUBLE_LONG_MAX = (double) LONG_MAX;
8141 static const double DOUBLE_LONG_MIN = (double) LONG_MIN;
8142
8143 /* Check for FP exception conditions:
8144 NaN raises IO
8145 Infinity raises IO
8146 Out of Range raises IO and IX and saturates value
8147 Denormal raises ID and IX and sets to zero. */
8148 #define RAISE_EXCEPTIONS(F, VALUE, FTYPE, ITYPE) \
8149 do \
8150 { \
8151 switch (fpclassify (F)) \
8152 { \
8153 case FP_INFINITE: \
8154 case FP_NAN: \
8155 aarch64_set_FPSR (cpu, IO); \
8156 if (signbit (F)) \
8157 VALUE = ITYPE##_MAX; \
8158 else \
8159 VALUE = ITYPE##_MIN; \
8160 break; \
8161 \
8162 case FP_NORMAL: \
8163 if (F >= FTYPE##_##ITYPE##_MAX) \
8164 { \
8165 aarch64_set_FPSR_bits (cpu, IO | IX, IO | IX); \
8166 VALUE = ITYPE##_MAX; \
8167 } \
8168 else if (F <= FTYPE##_##ITYPE##_MIN) \
8169 { \
8170 aarch64_set_FPSR_bits (cpu, IO | IX, IO | IX); \
8171 VALUE = ITYPE##_MIN; \
8172 } \
8173 break; \
8174 \
8175 case FP_SUBNORMAL: \
8176 aarch64_set_FPSR_bits (cpu, IO | IX | ID, IX | ID); \
8177 VALUE = 0; \
8178 break; \
8179 \
8180 default: \
8181 case FP_ZERO: \
8182 VALUE = 0; \
8183 break; \
8184 } \
8185 } \
8186 while (0)
8187
8188 /* 32 bit convert float to signed int truncate towards zero. */
8189 static void
8190 fcvtszs32 (sim_cpu *cpu)
8191 {
8192 unsigned sn = INSTR (9, 5);
8193 unsigned rd = INSTR (4, 0);
8194 /* TODO : check that this rounds toward zero. */
8195 float f = aarch64_get_FP_float (cpu, sn);
8196 int32_t value = (int32_t) f;
8197
8198 RAISE_EXCEPTIONS (f, value, FLOAT, INT);
8199
8200 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8201 /* Avoid sign extension to 64 bit. */
8202 aarch64_set_reg_u64 (cpu, rd, NO_SP, (uint32_t) value);
8203 }
8204
8205 /* 64 bit convert float to signed int truncate towards zero. */
8206 static void
8207 fcvtszs (sim_cpu *cpu)
8208 {
8209 unsigned sn = INSTR (9, 5);
8210 unsigned rd = INSTR (4, 0);
8211 float f = aarch64_get_FP_float (cpu, sn);
8212 int64_t value = (int64_t) f;
8213
8214 RAISE_EXCEPTIONS (f, value, FLOAT, LONG);
8215
8216 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8217 aarch64_set_reg_s64 (cpu, rd, NO_SP, value);
8218 }
8219
8220 /* 32 bit convert double to signed int truncate towards zero. */
8221 static void
8222 fcvtszd32 (sim_cpu *cpu)
8223 {
8224 unsigned sn = INSTR (9, 5);
8225 unsigned rd = INSTR (4, 0);
8226 /* TODO : check that this rounds toward zero. */
8227 double d = aarch64_get_FP_double (cpu, sn);
8228 int32_t value = (int32_t) d;
8229
8230 RAISE_EXCEPTIONS (d, value, DOUBLE, INT);
8231
8232 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8233 /* Avoid sign extension to 64 bit. */
8234 aarch64_set_reg_u64 (cpu, rd, NO_SP, (uint32_t) value);
8235 }
8236
8237 /* 64 bit convert double to signed int truncate towards zero. */
8238 static void
8239 fcvtszd (sim_cpu *cpu)
8240 {
8241 unsigned sn = INSTR (9, 5);
8242 unsigned rd = INSTR (4, 0);
8243 /* TODO : check that this rounds toward zero. */
8244 double d = aarch64_get_FP_double (cpu, sn);
8245 int64_t value;
8246
8247 value = (int64_t) d;
8248
8249 RAISE_EXCEPTIONS (d, value, DOUBLE, LONG);
8250
8251 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8252 aarch64_set_reg_s64 (cpu, rd, NO_SP, value);
8253 }
8254
8255 static void
8256 do_fcvtzu (sim_cpu *cpu)
8257 {
8258 /* instr[31] = size: 32-bit (0), 64-bit (1)
8259 instr[30,23] = 00111100
8260 instr[22] = type: single (0)/ double (1)
8261 instr[21] = enable (0)/disable(1) precision
8262 instr[20,16] = 11001
8263 instr[15,10] = precision
8264 instr[9,5] = Rs
8265 instr[4,0] = Rd. */
8266
8267 unsigned rs = INSTR (9, 5);
8268 unsigned rd = INSTR (4, 0);
8269
8270 NYI_assert (30, 23, 0x3C);
8271 NYI_assert (20, 16, 0x19);
8272
8273 if (INSTR (21, 21) != 1)
8274 /* Convert to fixed point. */
8275 HALT_NYI;
8276
8277 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8278 if (INSTR (31, 31))
8279 {
8280 /* Convert to unsigned 64-bit integer. */
8281 if (INSTR (22, 22))
8282 {
8283 double d = aarch64_get_FP_double (cpu, rs);
8284 uint64_t value = (uint64_t) d;
8285
8286 /* Do not raise an exception if we have reached ULONG_MAX. */
8287 if (value != (1UL << 63))
8288 RAISE_EXCEPTIONS (d, value, DOUBLE, LONG);
8289
8290 aarch64_set_reg_u64 (cpu, rd, NO_SP, value);
8291 }
8292 else
8293 {
8294 float f = aarch64_get_FP_float (cpu, rs);
8295 uint64_t value = (uint64_t) f;
8296
8297 /* Do not raise an exception if we have reached ULONG_MAX. */
8298 if (value != (1UL << 63))
8299 RAISE_EXCEPTIONS (f, value, FLOAT, LONG);
8300
8301 aarch64_set_reg_u64 (cpu, rd, NO_SP, value);
8302 }
8303 }
8304 else
8305 {
8306 uint32_t value;
8307
8308 /* Convert to unsigned 32-bit integer. */
8309 if (INSTR (22, 22))
8310 {
8311 double d = aarch64_get_FP_double (cpu, rs);
8312
8313 value = (uint32_t) d;
8314 /* Do not raise an exception if we have reached UINT_MAX. */
8315 if (value != (1UL << 31))
8316 RAISE_EXCEPTIONS (d, value, DOUBLE, INT);
8317 }
8318 else
8319 {
8320 float f = aarch64_get_FP_float (cpu, rs);
8321
8322 value = (uint32_t) f;
8323 /* Do not raise an exception if we have reached UINT_MAX. */
8324 if (value != (1UL << 31))
8325 RAISE_EXCEPTIONS (f, value, FLOAT, INT);
8326 }
8327
8328 aarch64_set_reg_u64 (cpu, rd, NO_SP, value);
8329 }
8330 }
8331
8332 static void
8333 do_UCVTF (sim_cpu *cpu)
8334 {
8335 /* instr[31] = size: 32-bit (0), 64-bit (1)
8336 instr[30,23] = 001 1110 0
8337 instr[22] = type: single (0)/ double (1)
8338 instr[21] = enable (0)/disable(1) precision
8339 instr[20,16] = 0 0011
8340 instr[15,10] = precision
8341 instr[9,5] = Rs
8342 instr[4,0] = Rd. */
8343
8344 unsigned rs = INSTR (9, 5);
8345 unsigned rd = INSTR (4, 0);
8346
8347 NYI_assert (30, 23, 0x3C);
8348 NYI_assert (20, 16, 0x03);
8349
8350 if (INSTR (21, 21) != 1)
8351 HALT_NYI;
8352
8353 /* FIXME: Add exception raising. */
8354 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8355 if (INSTR (31, 31))
8356 {
8357 uint64_t value = aarch64_get_reg_u64 (cpu, rs, NO_SP);
8358
8359 if (INSTR (22, 22))
8360 aarch64_set_FP_double (cpu, rd, (double) value);
8361 else
8362 aarch64_set_FP_float (cpu, rd, (float) value);
8363 }
8364 else
8365 {
8366 uint32_t value = aarch64_get_reg_u32 (cpu, rs, NO_SP);
8367
8368 if (INSTR (22, 22))
8369 aarch64_set_FP_double (cpu, rd, (double) value);
8370 else
8371 aarch64_set_FP_float (cpu, rd, (float) value);
8372 }
8373 }
8374
8375 static void
8376 float_vector_move (sim_cpu *cpu)
8377 {
8378 /* instr[31,17] == 100 1111 0101 0111
8379 instr[16] ==> direction 0=> to GR, 1=> from GR
8380 instr[15,10] => ???
8381 instr[9,5] ==> source
8382 instr[4,0] ==> dest. */
8383
8384 unsigned rn = INSTR (9, 5);
8385 unsigned rd = INSTR (4, 0);
8386
8387 NYI_assert (31, 17, 0x4F57);
8388
8389 if (INSTR (15, 10) != 0)
8390 HALT_UNALLOC;
8391
8392 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8393 if (INSTR (16, 16))
8394 aarch64_set_vec_u64 (cpu, rd, 1, aarch64_get_reg_u64 (cpu, rn, NO_SP));
8395 else
8396 aarch64_set_reg_u64 (cpu, rd, NO_SP, aarch64_get_vec_u64 (cpu, rn, 1));
8397 }
8398
8399 static void
8400 dexSimpleFPIntegerConvert (sim_cpu *cpu)
8401 {
8402 /* instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit
8403 instr[30 = 0
8404 instr[29] = S : 0 ==> OK, 1 ==> UNALLOC
8405 instr[28,25] = 1111
8406 instr[24] = 0
8407 instr[23,22] = type : 00 ==> single, 01 ==> double, 1x ==> UNALLOC
8408 instr[21] = 1
8409 instr[20,19] = rmode
8410 instr[18,16] = opcode
8411 instr[15,10] = 10 0000 */
8412
8413 uint32_t rmode_opcode;
8414 uint32_t size_type;
8415 uint32_t type;
8416 uint32_t size;
8417 uint32_t S;
8418
8419 if (INSTR (31, 17) == 0x4F57)
8420 {
8421 float_vector_move (cpu);
8422 return;
8423 }
8424
8425 size = INSTR (31, 31);
8426 S = INSTR (29, 29);
8427 if (S != 0)
8428 HALT_UNALLOC;
8429
8430 type = INSTR (23, 22);
8431 if (type > 1)
8432 HALT_UNALLOC;
8433
8434 rmode_opcode = INSTR (20, 16);
8435 size_type = (size << 1) | type; /* 0==32f, 1==32d, 2==64f, 3==64d. */
8436
8437 switch (rmode_opcode)
8438 {
8439 case 2: /* SCVTF. */
8440 switch (size_type)
8441 {
8442 case 0: scvtf32 (cpu); return;
8443 case 1: scvtd32 (cpu); return;
8444 case 2: scvtf (cpu); return;
8445 case 3: scvtd (cpu); return;
8446 }
8447
8448 case 6: /* FMOV GR, Vec. */
8449 switch (size_type)
8450 {
8451 case 0: gfmovs (cpu); return;
8452 case 3: gfmovd (cpu); return;
8453 default: HALT_UNALLOC;
8454 }
8455
8456 case 7: /* FMOV vec, GR. */
8457 switch (size_type)
8458 {
8459 case 0: fgmovs (cpu); return;
8460 case 3: fgmovd (cpu); return;
8461 default: HALT_UNALLOC;
8462 }
8463
8464 case 24: /* FCVTZS. */
8465 switch (size_type)
8466 {
8467 case 0: fcvtszs32 (cpu); return;
8468 case 1: fcvtszd32 (cpu); return;
8469 case 2: fcvtszs (cpu); return;
8470 case 3: fcvtszd (cpu); return;
8471 }
8472
8473 case 25: do_fcvtzu (cpu); return;
8474 case 3: do_UCVTF (cpu); return;
8475
8476 case 0: /* FCVTNS. */
8477 case 1: /* FCVTNU. */
8478 case 4: /* FCVTAS. */
8479 case 5: /* FCVTAU. */
8480 case 8: /* FCVPTS. */
8481 case 9: /* FCVTPU. */
8482 case 16: /* FCVTMS. */
8483 case 17: /* FCVTMU. */
8484 default:
8485 HALT_NYI;
8486 }
8487 }
8488
8489 static void
8490 set_flags_for_float_compare (sim_cpu *cpu, float fvalue1, float fvalue2)
8491 {
8492 uint32_t flags;
8493
8494 if (isnan (fvalue1) || isnan (fvalue2))
8495 flags = C|V;
8496 else
8497 {
8498 float result = fvalue1 - fvalue2;
8499
8500 if (result == 0.0)
8501 flags = Z|C;
8502 else if (result < 0)
8503 flags = N;
8504 else /* (result > 0). */
8505 flags = C;
8506 }
8507
8508 aarch64_set_CPSR (cpu, flags);
8509 }
8510
8511 static void
8512 fcmps (sim_cpu *cpu)
8513 {
8514 unsigned sm = INSTR (20, 16);
8515 unsigned sn = INSTR ( 9, 5);
8516
8517 float fvalue1 = aarch64_get_FP_float (cpu, sn);
8518 float fvalue2 = aarch64_get_FP_float (cpu, sm);
8519
8520 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8521 set_flags_for_float_compare (cpu, fvalue1, fvalue2);
8522 }
8523
8524 /* Float compare to zero -- Invalid Operation exception
8525 only on signaling NaNs. */
8526 static void
8527 fcmpzs (sim_cpu *cpu)
8528 {
8529 unsigned sn = INSTR ( 9, 5);
8530 float fvalue1 = aarch64_get_FP_float (cpu, sn);
8531
8532 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8533 set_flags_for_float_compare (cpu, fvalue1, 0.0f);
8534 }
8535
8536 /* Float compare -- Invalid Operation exception on all NaNs. */
8537 static void
8538 fcmpes (sim_cpu *cpu)
8539 {
8540 unsigned sm = INSTR (20, 16);
8541 unsigned sn = INSTR ( 9, 5);
8542
8543 float fvalue1 = aarch64_get_FP_float (cpu, sn);
8544 float fvalue2 = aarch64_get_FP_float (cpu, sm);
8545
8546 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8547 set_flags_for_float_compare (cpu, fvalue1, fvalue2);
8548 }
8549
8550 /* Float compare to zero -- Invalid Operation exception on all NaNs. */
8551 static void
8552 fcmpzes (sim_cpu *cpu)
8553 {
8554 unsigned sn = INSTR ( 9, 5);
8555 float fvalue1 = aarch64_get_FP_float (cpu, sn);
8556
8557 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8558 set_flags_for_float_compare (cpu, fvalue1, 0.0f);
8559 }
8560
8561 static void
8562 set_flags_for_double_compare (sim_cpu *cpu, double dval1, double dval2)
8563 {
8564 uint32_t flags;
8565
8566 if (isnan (dval1) || isnan (dval2))
8567 flags = C|V;
8568 else
8569 {
8570 double result = dval1 - dval2;
8571
8572 if (result == 0.0)
8573 flags = Z|C;
8574 else if (result < 0)
8575 flags = N;
8576 else /* (result > 0). */
8577 flags = C;
8578 }
8579
8580 aarch64_set_CPSR (cpu, flags);
8581 }
8582
8583 /* Double compare -- Invalid Operation exception only on signaling NaNs. */
8584 static void
8585 fcmpd (sim_cpu *cpu)
8586 {
8587 unsigned sm = INSTR (20, 16);
8588 unsigned sn = INSTR ( 9, 5);
8589
8590 double dvalue1 = aarch64_get_FP_double (cpu, sn);
8591 double dvalue2 = aarch64_get_FP_double (cpu, sm);
8592
8593 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8594 set_flags_for_double_compare (cpu, dvalue1, dvalue2);
8595 }
8596
8597 /* Double compare to zero -- Invalid Operation exception
8598 only on signaling NaNs. */
8599 static void
8600 fcmpzd (sim_cpu *cpu)
8601 {
8602 unsigned sn = INSTR ( 9, 5);
8603 double dvalue1 = aarch64_get_FP_double (cpu, sn);
8604
8605 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8606 set_flags_for_double_compare (cpu, dvalue1, 0.0);
8607 }
8608
8609 /* Double compare -- Invalid Operation exception on all NaNs. */
8610 static void
8611 fcmped (sim_cpu *cpu)
8612 {
8613 unsigned sm = INSTR (20, 16);
8614 unsigned sn = INSTR ( 9, 5);
8615
8616 double dvalue1 = aarch64_get_FP_double (cpu, sn);
8617 double dvalue2 = aarch64_get_FP_double (cpu, sm);
8618
8619 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8620 set_flags_for_double_compare (cpu, dvalue1, dvalue2);
8621 }
8622
8623 /* Double compare to zero -- Invalid Operation exception on all NaNs. */
8624 static void
8625 fcmpzed (sim_cpu *cpu)
8626 {
8627 unsigned sn = INSTR ( 9, 5);
8628 double dvalue1 = aarch64_get_FP_double (cpu, sn);
8629
8630 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8631 set_flags_for_double_compare (cpu, dvalue1, 0.0);
8632 }
8633
8634 static void
8635 dexSimpleFPCompare (sim_cpu *cpu)
8636 {
8637 /* assert instr[28,25] == 1111
8638 instr[30:24:21:13,10] = 0011000
8639 instr[31] = M : 0 ==> OK, 1 ==> UNALLOC
8640 instr[29] ==> S : 0 ==> OK, 1 ==> UNALLOC
8641 instr[23,22] ==> type : 0 ==> single, 01 ==> double, 1x ==> UNALLOC
8642 instr[15,14] ==> op : 00 ==> OK, ow ==> UNALLOC
8643 instr[4,0] ==> opcode2 : 00000 ==> FCMP, 10000 ==> FCMPE,
8644 01000 ==> FCMPZ, 11000 ==> FCMPEZ,
8645 ow ==> UNALLOC */
8646 uint32_t dispatch;
8647 uint32_t M_S = (INSTR (31, 31) << 1) | INSTR (29, 29);
8648 uint32_t type = INSTR (23, 22);
8649 uint32_t op = INSTR (15, 14);
8650 uint32_t op2_2_0 = INSTR (2, 0);
8651
8652 if (op2_2_0 != 0)
8653 HALT_UNALLOC;
8654
8655 if (M_S != 0)
8656 HALT_UNALLOC;
8657
8658 if (type > 1)
8659 HALT_UNALLOC;
8660
8661 if (op != 0)
8662 HALT_UNALLOC;
8663
8664 /* dispatch on type and top 2 bits of opcode. */
8665 dispatch = (type << 2) | INSTR (4, 3);
8666
8667 switch (dispatch)
8668 {
8669 case 0: fcmps (cpu); return;
8670 case 1: fcmpzs (cpu); return;
8671 case 2: fcmpes (cpu); return;
8672 case 3: fcmpzes (cpu); return;
8673 case 4: fcmpd (cpu); return;
8674 case 5: fcmpzd (cpu); return;
8675 case 6: fcmped (cpu); return;
8676 case 7: fcmpzed (cpu); return;
8677 }
8678 }
8679
8680 static void
8681 do_scalar_FADDP (sim_cpu *cpu)
8682 {
8683 /* instr [31,23] = 0111 1110 0
8684 instr [22] = single(0)/double(1)
8685 instr [21,10] = 11 0000 1101 10
8686 instr [9,5] = Fn
8687 instr [4,0] = Fd. */
8688
8689 unsigned Fn = INSTR (9, 5);
8690 unsigned Fd = INSTR (4, 0);
8691
8692 NYI_assert (31, 23, 0x0FC);
8693 NYI_assert (21, 10, 0xC36);
8694
8695 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8696 if (INSTR (22, 22))
8697 {
8698 double val1 = aarch64_get_vec_double (cpu, Fn, 0);
8699 double val2 = aarch64_get_vec_double (cpu, Fn, 1);
8700
8701 aarch64_set_FP_double (cpu, Fd, val1 + val2);
8702 }
8703 else
8704 {
8705 float val1 = aarch64_get_vec_float (cpu, Fn, 0);
8706 float val2 = aarch64_get_vec_float (cpu, Fn, 1);
8707
8708 aarch64_set_FP_float (cpu, Fd, val1 + val2);
8709 }
8710 }
8711
8712 /* Floating point absolute difference. */
8713
8714 static void
8715 do_scalar_FABD (sim_cpu *cpu)
8716 {
8717 /* instr [31,23] = 0111 1110 1
8718 instr [22] = float(0)/double(1)
8719 instr [21] = 1
8720 instr [20,16] = Rm
8721 instr [15,10] = 1101 01
8722 instr [9, 5] = Rn
8723 instr [4, 0] = Rd. */
8724
8725 unsigned rm = INSTR (20, 16);
8726 unsigned rn = INSTR (9, 5);
8727 unsigned rd = INSTR (4, 0);
8728
8729 NYI_assert (31, 23, 0x0FD);
8730 NYI_assert (21, 21, 1);
8731 NYI_assert (15, 10, 0x35);
8732
8733 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8734 if (INSTR (22, 22))
8735 aarch64_set_FP_double (cpu, rd,
8736 fabs (aarch64_get_FP_double (cpu, rn)
8737 - aarch64_get_FP_double (cpu, rm)));
8738 else
8739 aarch64_set_FP_float (cpu, rd,
8740 fabsf (aarch64_get_FP_float (cpu, rn)
8741 - aarch64_get_FP_float (cpu, rm)));
8742 }
8743
8744 static void
8745 do_scalar_CMGT (sim_cpu *cpu)
8746 {
8747 /* instr [31,21] = 0101 1110 111
8748 instr [20,16] = Rm
8749 instr [15,10] = 00 1101
8750 instr [9, 5] = Rn
8751 instr [4, 0] = Rd. */
8752
8753 unsigned rm = INSTR (20, 16);
8754 unsigned rn = INSTR (9, 5);
8755 unsigned rd = INSTR (4, 0);
8756
8757 NYI_assert (31, 21, 0x2F7);
8758 NYI_assert (15, 10, 0x0D);
8759
8760 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8761 aarch64_set_vec_u64 (cpu, rd, 0,
8762 aarch64_get_vec_u64 (cpu, rn, 0) >
8763 aarch64_get_vec_u64 (cpu, rm, 0) ? -1L : 0L);
8764 }
8765
8766 static void
8767 do_scalar_USHR (sim_cpu *cpu)
8768 {
8769 /* instr [31,23] = 0111 1111 0
8770 instr [22,16] = shift amount
8771 instr [15,10] = 0000 01
8772 instr [9, 5] = Rn
8773 instr [4, 0] = Rd. */
8774
8775 unsigned amount = 128 - INSTR (22, 16);
8776 unsigned rn = INSTR (9, 5);
8777 unsigned rd = INSTR (4, 0);
8778
8779 NYI_assert (31, 23, 0x0FE);
8780 NYI_assert (15, 10, 0x01);
8781
8782 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8783 aarch64_set_vec_u64 (cpu, rd, 0,
8784 aarch64_get_vec_u64 (cpu, rn, 0) >> amount);
8785 }
8786
8787 static void
8788 do_scalar_SSHL (sim_cpu *cpu)
8789 {
8790 /* instr [31,21] = 0101 1110 111
8791 instr [20,16] = Rm
8792 instr [15,10] = 0100 01
8793 instr [9, 5] = Rn
8794 instr [4, 0] = Rd. */
8795
8796 unsigned rm = INSTR (20, 16);
8797 unsigned rn = INSTR (9, 5);
8798 unsigned rd = INSTR (4, 0);
8799 signed int shift = aarch64_get_vec_s8 (cpu, rm, 0);
8800
8801 NYI_assert (31, 21, 0x2F7);
8802 NYI_assert (15, 10, 0x11);
8803
8804 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8805 if (shift >= 0)
8806 aarch64_set_vec_s64 (cpu, rd, 0,
8807 aarch64_get_vec_s64 (cpu, rn, 0) << shift);
8808 else
8809 aarch64_set_vec_s64 (cpu, rd, 0,
8810 aarch64_get_vec_s64 (cpu, rn, 0) >> - shift);
8811 }
8812
8813 static void
8814 do_scalar_shift (sim_cpu *cpu)
8815 {
8816 /* instr [31,23] = 0101 1111 0
8817 instr [22,16] = shift amount
8818 instr [15,10] = 0101 01 [SHL]
8819 instr [15,10] = 0000 01 [SSHR]
8820 instr [9, 5] = Rn
8821 instr [4, 0] = Rd. */
8822
8823 unsigned rn = INSTR (9, 5);
8824 unsigned rd = INSTR (4, 0);
8825 unsigned amount;
8826
8827 NYI_assert (31, 23, 0x0BE);
8828
8829 if (INSTR (22, 22) == 0)
8830 HALT_UNALLOC;
8831
8832 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8833 switch (INSTR (15, 10))
8834 {
8835 case 0x01: /* SSHR */
8836 amount = 128 - INSTR (22, 16);
8837 aarch64_set_vec_s64 (cpu, rd, 0,
8838 aarch64_get_vec_s64 (cpu, rn, 0) >> amount);
8839 return;
8840 case 0x15: /* SHL */
8841 amount = INSTR (22, 16) - 64;
8842 aarch64_set_vec_u64 (cpu, rd, 0,
8843 aarch64_get_vec_u64 (cpu, rn, 0) << amount);
8844 return;
8845 default:
8846 HALT_NYI;
8847 }
8848 }
8849
8850 /* FCMEQ FCMGT FCMGE. */
8851 static void
8852 do_scalar_FCM (sim_cpu *cpu)
8853 {
8854 /* instr [31,30] = 01
8855 instr [29] = U
8856 instr [28,24] = 1 1110
8857 instr [23] = E
8858 instr [22] = size
8859 instr [21] = 1
8860 instr [20,16] = Rm
8861 instr [15,12] = 1110
8862 instr [11] = AC
8863 instr [10] = 1
8864 instr [9, 5] = Rn
8865 instr [4, 0] = Rd. */
8866
8867 unsigned rm = INSTR (20, 16);
8868 unsigned rn = INSTR (9, 5);
8869 unsigned rd = INSTR (4, 0);
8870 unsigned EUac = (INSTR (23, 23) << 2) | (INSTR (29, 29) << 1) | INSTR (11, 11);
8871 unsigned result;
8872 float val1;
8873 float val2;
8874
8875 NYI_assert (31, 30, 1);
8876 NYI_assert (28, 24, 0x1E);
8877 NYI_assert (21, 21, 1);
8878 NYI_assert (15, 12, 0xE);
8879 NYI_assert (10, 10, 1);
8880
8881 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8882 if (INSTR (22, 22))
8883 {
8884 double val1 = aarch64_get_FP_double (cpu, rn);
8885 double val2 = aarch64_get_FP_double (cpu, rm);
8886
8887 switch (EUac)
8888 {
8889 case 0: /* 000 */
8890 result = val1 == val2;
8891 break;
8892
8893 case 3: /* 011 */
8894 val1 = fabs (val1);
8895 val2 = fabs (val2);
8896 /* Fall through. */
8897 case 2: /* 010 */
8898 result = val1 >= val2;
8899 break;
8900
8901 case 7: /* 111 */
8902 val1 = fabs (val1);
8903 val2 = fabs (val2);
8904 /* Fall through. */
8905 case 6: /* 110 */
8906 result = val1 > val2;
8907 break;
8908
8909 default:
8910 HALT_UNALLOC;
8911 }
8912
8913 aarch64_set_vec_u32 (cpu, rd, 0, result ? -1 : 0);
8914 return;
8915 }
8916
8917 val1 = aarch64_get_FP_float (cpu, rn);
8918 val2 = aarch64_get_FP_float (cpu, rm);
8919
8920 switch (EUac)
8921 {
8922 case 0: /* 000 */
8923 result = val1 == val2;
8924 break;
8925
8926 case 3: /* 011 */
8927 val1 = fabsf (val1);
8928 val2 = fabsf (val2);
8929 /* Fall through. */
8930 case 2: /* 010 */
8931 result = val1 >= val2;
8932 break;
8933
8934 case 7: /* 111 */
8935 val1 = fabsf (val1);
8936 val2 = fabsf (val2);
8937 /* Fall through. */
8938 case 6: /* 110 */
8939 result = val1 > val2;
8940 break;
8941
8942 default:
8943 HALT_UNALLOC;
8944 }
8945
8946 aarch64_set_vec_u32 (cpu, rd, 0, result ? -1 : 0);
8947 }
8948
8949 /* An alias of DUP. */
8950 static void
8951 do_scalar_MOV (sim_cpu *cpu)
8952 {
8953 /* instr [31,21] = 0101 1110 000
8954 instr [20,16] = imm5
8955 instr [15,10] = 0000 01
8956 instr [9, 5] = Rn
8957 instr [4, 0] = Rd. */
8958
8959 unsigned rn = INSTR (9, 5);
8960 unsigned rd = INSTR (4, 0);
8961 unsigned index;
8962
8963 NYI_assert (31, 21, 0x2F0);
8964 NYI_assert (15, 10, 0x01);
8965
8966 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
8967 if (INSTR (16, 16))
8968 {
8969 /* 8-bit. */
8970 index = INSTR (20, 17);
8971 aarch64_set_vec_u8
8972 (cpu, rd, 0, aarch64_get_vec_u8 (cpu, rn, index));
8973 }
8974 else if (INSTR (17, 17))
8975 {
8976 /* 16-bit. */
8977 index = INSTR (20, 18);
8978 aarch64_set_vec_u16
8979 (cpu, rd, 0, aarch64_get_vec_u16 (cpu, rn, index));
8980 }
8981 else if (INSTR (18, 18))
8982 {
8983 /* 32-bit. */
8984 index = INSTR (20, 19);
8985 aarch64_set_vec_u32
8986 (cpu, rd, 0, aarch64_get_vec_u32 (cpu, rn, index));
8987 }
8988 else if (INSTR (19, 19))
8989 {
8990 /* 64-bit. */
8991 index = INSTR (20, 20);
8992 aarch64_set_vec_u64
8993 (cpu, rd, 0, aarch64_get_vec_u64 (cpu, rn, index));
8994 }
8995 else
8996 HALT_UNALLOC;
8997 }
8998
8999 static void
9000 do_scalar_NEG (sim_cpu *cpu)
9001 {
9002 /* instr [31,10] = 0111 1110 1110 0000 1011 10
9003 instr [9, 5] = Rn
9004 instr [4, 0] = Rd. */
9005
9006 unsigned rn = INSTR (9, 5);
9007 unsigned rd = INSTR (4, 0);
9008
9009 NYI_assert (31, 10, 0x1FB82E);
9010
9011 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9012 aarch64_set_vec_u64 (cpu, rd, 0, - aarch64_get_vec_u64 (cpu, rn, 0));
9013 }
9014
9015 static void
9016 do_scalar_USHL (sim_cpu *cpu)
9017 {
9018 /* instr [31,21] = 0111 1110 111
9019 instr [20,16] = Rm
9020 instr [15,10] = 0100 01
9021 instr [9, 5] = Rn
9022 instr [4, 0] = Rd. */
9023
9024 unsigned rm = INSTR (20, 16);
9025 unsigned rn = INSTR (9, 5);
9026 unsigned rd = INSTR (4, 0);
9027 signed int shift = aarch64_get_vec_s8 (cpu, rm, 0);
9028
9029 NYI_assert (31, 21, 0x3F7);
9030 NYI_assert (15, 10, 0x11);
9031
9032 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9033 if (shift >= 0)
9034 aarch64_set_vec_u64 (cpu, rd, 0, aarch64_get_vec_u64 (cpu, rn, 0) << shift);
9035 else
9036 aarch64_set_vec_u64 (cpu, rd, 0, aarch64_get_vec_u64 (cpu, rn, 0) >> - shift);
9037 }
9038
9039 static void
9040 do_double_add (sim_cpu *cpu)
9041 {
9042 /* instr [31,21] = 0101 1110 111
9043 instr [20,16] = Fn
9044 instr [15,10] = 1000 01
9045 instr [9,5] = Fm
9046 instr [4,0] = Fd. */
9047 unsigned Fd;
9048 unsigned Fm;
9049 unsigned Fn;
9050 double val1;
9051 double val2;
9052
9053 NYI_assert (31, 21, 0x2F7);
9054 NYI_assert (15, 10, 0x21);
9055
9056 Fd = INSTR (4, 0);
9057 Fm = INSTR (9, 5);
9058 Fn = INSTR (20, 16);
9059
9060 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9061 val1 = aarch64_get_FP_double (cpu, Fm);
9062 val2 = aarch64_get_FP_double (cpu, Fn);
9063
9064 aarch64_set_FP_double (cpu, Fd, val1 + val2);
9065 }
9066
9067 static void
9068 do_scalar_UCVTF (sim_cpu *cpu)
9069 {
9070 /* instr [31,23] = 0111 1110 0
9071 instr [22] = single(0)/double(1)
9072 instr [21,10] = 10 0001 1101 10
9073 instr [9,5] = rn
9074 instr [4,0] = rd. */
9075
9076 unsigned rn = INSTR (9, 5);
9077 unsigned rd = INSTR (4, 0);
9078
9079 NYI_assert (31, 23, 0x0FC);
9080 NYI_assert (21, 10, 0x876);
9081
9082 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9083 if (INSTR (22, 22))
9084 {
9085 uint64_t val = aarch64_get_vec_u64 (cpu, rn, 0);
9086
9087 aarch64_set_vec_double (cpu, rd, 0, (double) val);
9088 }
9089 else
9090 {
9091 uint32_t val = aarch64_get_vec_u32 (cpu, rn, 0);
9092
9093 aarch64_set_vec_float (cpu, rd, 0, (float) val);
9094 }
9095 }
9096
9097 static void
9098 do_scalar_vec (sim_cpu *cpu)
9099 {
9100 /* instr [30] = 1. */
9101 /* instr [28,25] = 1111. */
9102 switch (INSTR (31, 23))
9103 {
9104 case 0xBC:
9105 switch (INSTR (15, 10))
9106 {
9107 case 0x01: do_scalar_MOV (cpu); return;
9108 case 0x39: do_scalar_FCM (cpu); return;
9109 case 0x3B: do_scalar_FCM (cpu); return;
9110 }
9111 break;
9112
9113 case 0xBE: do_scalar_shift (cpu); return;
9114
9115 case 0xFC:
9116 switch (INSTR (15, 10))
9117 {
9118 case 0x36:
9119 switch (INSTR (21, 16))
9120 {
9121 case 0x30: do_scalar_FADDP (cpu); return;
9122 case 0x21: do_scalar_UCVTF (cpu); return;
9123 }
9124 HALT_NYI;
9125 case 0x39: do_scalar_FCM (cpu); return;
9126 case 0x3B: do_scalar_FCM (cpu); return;
9127 }
9128 break;
9129
9130 case 0xFD:
9131 switch (INSTR (15, 10))
9132 {
9133 case 0x0D: do_scalar_CMGT (cpu); return;
9134 case 0x11: do_scalar_USHL (cpu); return;
9135 case 0x2E: do_scalar_NEG (cpu); return;
9136 case 0x35: do_scalar_FABD (cpu); return;
9137 case 0x39: do_scalar_FCM (cpu); return;
9138 case 0x3B: do_scalar_FCM (cpu); return;
9139 default:
9140 HALT_NYI;
9141 }
9142
9143 case 0xFE: do_scalar_USHR (cpu); return;
9144
9145 case 0xBD:
9146 switch (INSTR (15, 10))
9147 {
9148 case 0x21: do_double_add (cpu); return;
9149 case 0x11: do_scalar_SSHL (cpu); return;
9150 default:
9151 HALT_NYI;
9152 }
9153
9154 default:
9155 HALT_NYI;
9156 }
9157 }
9158
9159 static void
9160 dexAdvSIMD1 (sim_cpu *cpu)
9161 {
9162 /* instr [28,25] = 1 111. */
9163
9164 /* We are currently only interested in the basic
9165 scalar fp routines which all have bit 30 = 0. */
9166 if (INSTR (30, 30))
9167 do_scalar_vec (cpu);
9168
9169 /* instr[24] is set for FP data processing 3-source and clear for
9170 all other basic scalar fp instruction groups. */
9171 else if (INSTR (24, 24))
9172 dexSimpleFPDataProc3Source (cpu);
9173
9174 /* instr[21] is clear for floating <-> fixed conversions and set for
9175 all other basic scalar fp instruction groups. */
9176 else if (!INSTR (21, 21))
9177 dexSimpleFPFixedConvert (cpu);
9178
9179 /* instr[11,10] : 01 ==> cond compare, 10 ==> Data Proc 2 Source
9180 11 ==> cond select, 00 ==> other. */
9181 else
9182 switch (INSTR (11, 10))
9183 {
9184 case 1: dexSimpleFPCondCompare (cpu); return;
9185 case 2: dexSimpleFPDataProc2Source (cpu); return;
9186 case 3: dexSimpleFPCondSelect (cpu); return;
9187
9188 default:
9189 /* Now an ordered cascade of tests.
9190 FP immediate has instr [12] == 1.
9191 FP compare has instr [13] == 1.
9192 FP Data Proc 1 Source has instr [14] == 1.
9193 FP floating <--> integer conversions has instr [15] == 0. */
9194 if (INSTR (12, 12))
9195 dexSimpleFPImmediate (cpu);
9196
9197 else if (INSTR (13, 13))
9198 dexSimpleFPCompare (cpu);
9199
9200 else if (INSTR (14, 14))
9201 dexSimpleFPDataProc1Source (cpu);
9202
9203 else if (!INSTR (15, 15))
9204 dexSimpleFPIntegerConvert (cpu);
9205
9206 else
9207 /* If we get here then instr[15] == 1 which means UNALLOC. */
9208 HALT_UNALLOC;
9209 }
9210 }
9211
9212 /* PC relative addressing. */
9213
9214 static void
9215 pcadr (sim_cpu *cpu)
9216 {
9217 /* instr[31] = op : 0 ==> ADR, 1 ==> ADRP
9218 instr[30,29] = immlo
9219 instr[23,5] = immhi. */
9220 uint64_t address;
9221 unsigned rd = INSTR (4, 0);
9222 uint32_t isPage = INSTR (31, 31);
9223 union { int64_t u64; uint64_t s64; } imm;
9224 uint64_t offset;
9225
9226 imm.s64 = simm64 (aarch64_get_instr (cpu), 23, 5);
9227 offset = imm.u64;
9228 offset = (offset << 2) | INSTR (30, 29);
9229
9230 address = aarch64_get_PC (cpu);
9231
9232 if (isPage)
9233 {
9234 offset <<= 12;
9235 address &= ~0xfff;
9236 }
9237
9238 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9239 aarch64_set_reg_u64 (cpu, rd, NO_SP, address + offset);
9240 }
9241
9242 /* Specific decode and execute for group Data Processing Immediate. */
9243
9244 static void
9245 dexPCRelAddressing (sim_cpu *cpu)
9246 {
9247 /* assert instr[28,24] = 10000. */
9248 pcadr (cpu);
9249 }
9250
9251 /* Immediate logical.
9252 The bimm32/64 argument is constructed by replicating a 2, 4, 8,
9253 16, 32 or 64 bit sequence pulled out at decode and possibly
9254 inverting it..
9255
9256 N.B. the output register (dest) can normally be Xn or SP
9257 the exception occurs for flag setting instructions which may
9258 only use Xn for the output (dest). The input register can
9259 never be SP. */
9260
9261 /* 32 bit and immediate. */
9262 static void
9263 and32 (sim_cpu *cpu, uint32_t bimm)
9264 {
9265 unsigned rn = INSTR (9, 5);
9266 unsigned rd = INSTR (4, 0);
9267
9268 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9269 aarch64_set_reg_u64 (cpu, rd, SP_OK,
9270 aarch64_get_reg_u32 (cpu, rn, NO_SP) & bimm);
9271 }
9272
9273 /* 64 bit and immediate. */
9274 static void
9275 and64 (sim_cpu *cpu, uint64_t bimm)
9276 {
9277 unsigned rn = INSTR (9, 5);
9278 unsigned rd = INSTR (4, 0);
9279
9280 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9281 aarch64_set_reg_u64 (cpu, rd, SP_OK,
9282 aarch64_get_reg_u64 (cpu, rn, NO_SP) & bimm);
9283 }
9284
9285 /* 32 bit and immediate set flags. */
9286 static void
9287 ands32 (sim_cpu *cpu, uint32_t bimm)
9288 {
9289 unsigned rn = INSTR (9, 5);
9290 unsigned rd = INSTR (4, 0);
9291
9292 uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, NO_SP);
9293 uint32_t value2 = bimm;
9294
9295 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9296 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 & value2);
9297 set_flags_for_binop32 (cpu, value1 & value2);
9298 }
9299
9300 /* 64 bit and immediate set flags. */
9301 static void
9302 ands64 (sim_cpu *cpu, uint64_t bimm)
9303 {
9304 unsigned rn = INSTR (9, 5);
9305 unsigned rd = INSTR (4, 0);
9306
9307 uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, NO_SP);
9308 uint64_t value2 = bimm;
9309
9310 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9311 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 & value2);
9312 set_flags_for_binop64 (cpu, value1 & value2);
9313 }
9314
9315 /* 32 bit exclusive or immediate. */
9316 static void
9317 eor32 (sim_cpu *cpu, uint32_t bimm)
9318 {
9319 unsigned rn = INSTR (9, 5);
9320 unsigned rd = INSTR (4, 0);
9321
9322 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9323 aarch64_set_reg_u64 (cpu, rd, SP_OK,
9324 aarch64_get_reg_u32 (cpu, rn, NO_SP) ^ bimm);
9325 }
9326
9327 /* 64 bit exclusive or immediate. */
9328 static void
9329 eor64 (sim_cpu *cpu, uint64_t bimm)
9330 {
9331 unsigned rn = INSTR (9, 5);
9332 unsigned rd = INSTR (4, 0);
9333
9334 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9335 aarch64_set_reg_u64 (cpu, rd, SP_OK,
9336 aarch64_get_reg_u64 (cpu, rn, NO_SP) ^ bimm);
9337 }
9338
9339 /* 32 bit or immediate. */
9340 static void
9341 orr32 (sim_cpu *cpu, uint32_t bimm)
9342 {
9343 unsigned rn = INSTR (9, 5);
9344 unsigned rd = INSTR (4, 0);
9345
9346 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9347 aarch64_set_reg_u64 (cpu, rd, SP_OK,
9348 aarch64_get_reg_u32 (cpu, rn, NO_SP) | bimm);
9349 }
9350
9351 /* 64 bit or immediate. */
9352 static void
9353 orr64 (sim_cpu *cpu, uint64_t bimm)
9354 {
9355 unsigned rn = INSTR (9, 5);
9356 unsigned rd = INSTR (4, 0);
9357
9358 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9359 aarch64_set_reg_u64 (cpu, rd, SP_OK,
9360 aarch64_get_reg_u64 (cpu, rn, NO_SP) | bimm);
9361 }
9362
9363 /* Logical shifted register.
9364 These allow an optional LSL, ASR, LSR or ROR to the second source
9365 register with a count up to the register bit count.
9366 N.B register args may not be SP. */
9367
9368 /* 32 bit AND shifted register. */
9369 static void
9370 and32_shift (sim_cpu *cpu, Shift shift, uint32_t count)
9371 {
9372 unsigned rm = INSTR (20, 16);
9373 unsigned rn = INSTR (9, 5);
9374 unsigned rd = INSTR (4, 0);
9375
9376 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9377 aarch64_set_reg_u64
9378 (cpu, rd, NO_SP, aarch64_get_reg_u32 (cpu, rn, NO_SP)
9379 & shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), shift, count));
9380 }
9381
9382 /* 64 bit AND shifted register. */
9383 static void
9384 and64_shift (sim_cpu *cpu, Shift shift, uint32_t count)
9385 {
9386 unsigned rm = INSTR (20, 16);
9387 unsigned rn = INSTR (9, 5);
9388 unsigned rd = INSTR (4, 0);
9389
9390 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9391 aarch64_set_reg_u64
9392 (cpu, rd, NO_SP, aarch64_get_reg_u64 (cpu, rn, NO_SP)
9393 & shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), shift, count));
9394 }
9395
9396 /* 32 bit AND shifted register setting flags. */
9397 static void
9398 ands32_shift (sim_cpu *cpu, Shift shift, uint32_t count)
9399 {
9400 unsigned rm = INSTR (20, 16);
9401 unsigned rn = INSTR (9, 5);
9402 unsigned rd = INSTR (4, 0);
9403
9404 uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, NO_SP);
9405 uint32_t value2 = shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP),
9406 shift, count);
9407
9408 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9409 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 & value2);
9410 set_flags_for_binop32 (cpu, value1 & value2);
9411 }
9412
9413 /* 64 bit AND shifted register setting flags. */
9414 static void
9415 ands64_shift (sim_cpu *cpu, Shift shift, uint32_t count)
9416 {
9417 unsigned rm = INSTR (20, 16);
9418 unsigned rn = INSTR (9, 5);
9419 unsigned rd = INSTR (4, 0);
9420
9421 uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, NO_SP);
9422 uint64_t value2 = shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP),
9423 shift, count);
9424
9425 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9426 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 & value2);
9427 set_flags_for_binop64 (cpu, value1 & value2);
9428 }
9429
9430 /* 32 bit BIC shifted register. */
9431 static void
9432 bic32_shift (sim_cpu *cpu, Shift shift, uint32_t count)
9433 {
9434 unsigned rm = INSTR (20, 16);
9435 unsigned rn = INSTR (9, 5);
9436 unsigned rd = INSTR (4, 0);
9437
9438 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9439 aarch64_set_reg_u64
9440 (cpu, rd, NO_SP, aarch64_get_reg_u32 (cpu, rn, NO_SP)
9441 & ~ shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), shift, count));
9442 }
9443
9444 /* 64 bit BIC shifted register. */
9445 static void
9446 bic64_shift (sim_cpu *cpu, Shift shift, uint32_t count)
9447 {
9448 unsigned rm = INSTR (20, 16);
9449 unsigned rn = INSTR (9, 5);
9450 unsigned rd = INSTR (4, 0);
9451
9452 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9453 aarch64_set_reg_u64
9454 (cpu, rd, NO_SP, aarch64_get_reg_u64 (cpu, rn, NO_SP)
9455 & ~ shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), shift, count));
9456 }
9457
9458 /* 32 bit BIC shifted register setting flags. */
9459 static void
9460 bics32_shift (sim_cpu *cpu, Shift shift, uint32_t count)
9461 {
9462 unsigned rm = INSTR (20, 16);
9463 unsigned rn = INSTR (9, 5);
9464 unsigned rd = INSTR (4, 0);
9465
9466 uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, NO_SP);
9467 uint32_t value2 = ~ shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP),
9468 shift, count);
9469
9470 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9471 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 & value2);
9472 set_flags_for_binop32 (cpu, value1 & value2);
9473 }
9474
9475 /* 64 bit BIC shifted register setting flags. */
9476 static void
9477 bics64_shift (sim_cpu *cpu, Shift shift, uint32_t count)
9478 {
9479 unsigned rm = INSTR (20, 16);
9480 unsigned rn = INSTR (9, 5);
9481 unsigned rd = INSTR (4, 0);
9482
9483 uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, NO_SP);
9484 uint64_t value2 = ~ shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP),
9485 shift, count);
9486
9487 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9488 aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 & value2);
9489 set_flags_for_binop64 (cpu, value1 & value2);
9490 }
9491
9492 /* 32 bit EON shifted register. */
9493 static void
9494 eon32_shift (sim_cpu *cpu, Shift shift, uint32_t count)
9495 {
9496 unsigned rm = INSTR (20, 16);
9497 unsigned rn = INSTR (9, 5);
9498 unsigned rd = INSTR (4, 0);
9499
9500 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9501 aarch64_set_reg_u64
9502 (cpu, rd, NO_SP, aarch64_get_reg_u32 (cpu, rn, NO_SP)
9503 ^ ~ shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), shift, count));
9504 }
9505
9506 /* 64 bit EON shifted register. */
9507 static void
9508 eon64_shift (sim_cpu *cpu, Shift shift, uint32_t count)
9509 {
9510 unsigned rm = INSTR (20, 16);
9511 unsigned rn = INSTR (9, 5);
9512 unsigned rd = INSTR (4, 0);
9513
9514 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9515 aarch64_set_reg_u64
9516 (cpu, rd, NO_SP, aarch64_get_reg_u64 (cpu, rn, NO_SP)
9517 ^ ~ shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), shift, count));
9518 }
9519
9520 /* 32 bit EOR shifted register. */
9521 static void
9522 eor32_shift (sim_cpu *cpu, Shift shift, uint32_t count)
9523 {
9524 unsigned rm = INSTR (20, 16);
9525 unsigned rn = INSTR (9, 5);
9526 unsigned rd = INSTR (4, 0);
9527
9528 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9529 aarch64_set_reg_u64
9530 (cpu, rd, NO_SP, aarch64_get_reg_u32 (cpu, rn, NO_SP)
9531 ^ shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), shift, count));
9532 }
9533
9534 /* 64 bit EOR shifted register. */
9535 static void
9536 eor64_shift (sim_cpu *cpu, Shift shift, uint32_t count)
9537 {
9538 unsigned rm = INSTR (20, 16);
9539 unsigned rn = INSTR (9, 5);
9540 unsigned rd = INSTR (4, 0);
9541
9542 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9543 aarch64_set_reg_u64
9544 (cpu, rd, NO_SP, aarch64_get_reg_u64 (cpu, rn, NO_SP)
9545 ^ shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), shift, count));
9546 }
9547
9548 /* 32 bit ORR shifted register. */
9549 static void
9550 orr32_shift (sim_cpu *cpu, Shift shift, uint32_t count)
9551 {
9552 unsigned rm = INSTR (20, 16);
9553 unsigned rn = INSTR (9, 5);
9554 unsigned rd = INSTR (4, 0);
9555
9556 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9557 aarch64_set_reg_u64
9558 (cpu, rd, NO_SP, aarch64_get_reg_u32 (cpu, rn, NO_SP)
9559 | shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), shift, count));
9560 }
9561
9562 /* 64 bit ORR shifted register. */
9563 static void
9564 orr64_shift (sim_cpu *cpu, Shift shift, uint32_t count)
9565 {
9566 unsigned rm = INSTR (20, 16);
9567 unsigned rn = INSTR (9, 5);
9568 unsigned rd = INSTR (4, 0);
9569
9570 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9571 aarch64_set_reg_u64
9572 (cpu, rd, NO_SP, aarch64_get_reg_u64 (cpu, rn, NO_SP)
9573 | shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), shift, count));
9574 }
9575
9576 /* 32 bit ORN shifted register. */
9577 static void
9578 orn32_shift (sim_cpu *cpu, Shift shift, uint32_t count)
9579 {
9580 unsigned rm = INSTR (20, 16);
9581 unsigned rn = INSTR (9, 5);
9582 unsigned rd = INSTR (4, 0);
9583
9584 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9585 aarch64_set_reg_u64
9586 (cpu, rd, NO_SP, aarch64_get_reg_u32 (cpu, rn, NO_SP)
9587 | ~ shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), shift, count));
9588 }
9589
9590 /* 64 bit ORN shifted register. */
9591 static void
9592 orn64_shift (sim_cpu *cpu, Shift shift, uint32_t count)
9593 {
9594 unsigned rm = INSTR (20, 16);
9595 unsigned rn = INSTR (9, 5);
9596 unsigned rd = INSTR (4, 0);
9597
9598 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9599 aarch64_set_reg_u64
9600 (cpu, rd, NO_SP, aarch64_get_reg_u64 (cpu, rn, NO_SP)
9601 | ~ shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), shift, count));
9602 }
9603
9604 static void
9605 dexLogicalImmediate (sim_cpu *cpu)
9606 {
9607 /* assert instr[28,23] = 1001000
9608 instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit
9609 instr[30,29] = op : 0 ==> AND, 1 ==> ORR, 2 ==> EOR, 3 ==> ANDS
9610 instr[22] = N : used to construct immediate mask
9611 instr[21,16] = immr
9612 instr[15,10] = imms
9613 instr[9,5] = Rn
9614 instr[4,0] = Rd */
9615
9616 /* 32 bit operations must have N = 0 or else we have an UNALLOC. */
9617 uint32_t size = INSTR (31, 31);
9618 uint32_t N = INSTR (22, 22);
9619 /* uint32_t immr = INSTR (21, 16);. */
9620 /* uint32_t imms = INSTR (15, 10);. */
9621 uint32_t index = INSTR (22, 10);
9622 uint64_t bimm64 = LITable [index];
9623 uint32_t dispatch = INSTR (30, 29);
9624
9625 if (~size & N)
9626 HALT_UNALLOC;
9627
9628 if (!bimm64)
9629 HALT_UNALLOC;
9630
9631 if (size == 0)
9632 {
9633 uint32_t bimm = (uint32_t) bimm64;
9634
9635 switch (dispatch)
9636 {
9637 case 0: and32 (cpu, bimm); return;
9638 case 1: orr32 (cpu, bimm); return;
9639 case 2: eor32 (cpu, bimm); return;
9640 case 3: ands32 (cpu, bimm); return;
9641 }
9642 }
9643 else
9644 {
9645 switch (dispatch)
9646 {
9647 case 0: and64 (cpu, bimm64); return;
9648 case 1: orr64 (cpu, bimm64); return;
9649 case 2: eor64 (cpu, bimm64); return;
9650 case 3: ands64 (cpu, bimm64); return;
9651 }
9652 }
9653 HALT_UNALLOC;
9654 }
9655
9656 /* Immediate move.
9657 The uimm argument is a 16 bit value to be inserted into the
9658 target register the pos argument locates the 16 bit word in the
9659 dest register i.e. it is in {0, 1} for 32 bit and {0, 1, 2,
9660 3} for 64 bit.
9661 N.B register arg may not be SP so it should be.
9662 accessed using the setGZRegisterXXX accessors. */
9663
9664 /* 32 bit move 16 bit immediate zero remaining shorts. */
9665 static void
9666 movz32 (sim_cpu *cpu, uint32_t val, uint32_t pos)
9667 {
9668 unsigned rd = INSTR (4, 0);
9669
9670 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9671 aarch64_set_reg_u64 (cpu, rd, NO_SP, val << (pos * 16));
9672 }
9673
9674 /* 64 bit move 16 bit immediate zero remaining shorts. */
9675 static void
9676 movz64 (sim_cpu *cpu, uint32_t val, uint32_t pos)
9677 {
9678 unsigned rd = INSTR (4, 0);
9679
9680 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9681 aarch64_set_reg_u64 (cpu, rd, NO_SP, ((uint64_t) val) << (pos * 16));
9682 }
9683
9684 /* 32 bit move 16 bit immediate negated. */
9685 static void
9686 movn32 (sim_cpu *cpu, uint32_t val, uint32_t pos)
9687 {
9688 unsigned rd = INSTR (4, 0);
9689
9690 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9691 aarch64_set_reg_u64 (cpu, rd, NO_SP, ((val << (pos * 16)) ^ 0xffffffffU));
9692 }
9693
9694 /* 64 bit move 16 bit immediate negated. */
9695 static void
9696 movn64 (sim_cpu *cpu, uint32_t val, uint32_t pos)
9697 {
9698 unsigned rd = INSTR (4, 0);
9699
9700 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9701 aarch64_set_reg_u64
9702 (cpu, rd, NO_SP, ((((uint64_t) val) << (pos * 16))
9703 ^ 0xffffffffffffffffULL));
9704 }
9705
9706 /* 32 bit move 16 bit immediate keep remaining shorts. */
9707 static void
9708 movk32 (sim_cpu *cpu, uint32_t val, uint32_t pos)
9709 {
9710 unsigned rd = INSTR (4, 0);
9711 uint32_t current = aarch64_get_reg_u32 (cpu, rd, NO_SP);
9712 uint32_t value = val << (pos * 16);
9713 uint32_t mask = ~(0xffffU << (pos * 16));
9714
9715 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9716 aarch64_set_reg_u64 (cpu, rd, NO_SP, (value | (current & mask)));
9717 }
9718
9719 /* 64 bit move 16 it immediate keep remaining shorts. */
9720 static void
9721 movk64 (sim_cpu *cpu, uint32_t val, uint32_t pos)
9722 {
9723 unsigned rd = INSTR (4, 0);
9724 uint64_t current = aarch64_get_reg_u64 (cpu, rd, NO_SP);
9725 uint64_t value = (uint64_t) val << (pos * 16);
9726 uint64_t mask = ~(0xffffULL << (pos * 16));
9727
9728 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9729 aarch64_set_reg_u64 (cpu, rd, NO_SP, (value | (current & mask)));
9730 }
9731
9732 static void
9733 dexMoveWideImmediate (sim_cpu *cpu)
9734 {
9735 /* assert instr[28:23] = 100101
9736 instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit
9737 instr[30,29] = op : 0 ==> MOVN, 1 ==> UNALLOC, 2 ==> MOVZ, 3 ==> MOVK
9738 instr[22,21] = shift : 00 == LSL#0, 01 = LSL#16, 10 = LSL#32, 11 = LSL#48
9739 instr[20,5] = uimm16
9740 instr[4,0] = Rd */
9741
9742 /* N.B. the (multiple of 16) shift is applied by the called routine,
9743 we just pass the multiplier. */
9744
9745 uint32_t imm;
9746 uint32_t size = INSTR (31, 31);
9747 uint32_t op = INSTR (30, 29);
9748 uint32_t shift = INSTR (22, 21);
9749
9750 /* 32 bit can only shift 0 or 1 lot of 16.
9751 anything else is an unallocated instruction. */
9752 if (size == 0 && (shift > 1))
9753 HALT_UNALLOC;
9754
9755 if (op == 1)
9756 HALT_UNALLOC;
9757
9758 imm = INSTR (20, 5);
9759
9760 if (size == 0)
9761 {
9762 if (op == 0)
9763 movn32 (cpu, imm, shift);
9764 else if (op == 2)
9765 movz32 (cpu, imm, shift);
9766 else
9767 movk32 (cpu, imm, shift);
9768 }
9769 else
9770 {
9771 if (op == 0)
9772 movn64 (cpu, imm, shift);
9773 else if (op == 2)
9774 movz64 (cpu, imm, shift);
9775 else
9776 movk64 (cpu, imm, shift);
9777 }
9778 }
9779
9780 /* Bitfield operations.
9781 These take a pair of bit positions r and s which are in {0..31}
9782 or {0..63} depending on the instruction word size.
9783 N.B register args may not be SP. */
9784
9785 /* OK, we start with ubfm which just needs to pick
9786 some bits out of source zero the rest and write
9787 the result to dest. Just need two logical shifts. */
9788
9789 /* 32 bit bitfield move, left and right of affected zeroed
9790 if r <= s Wd<s-r:0> = Wn<s:r> else Wd<32+s-r,32-r> = Wn<s:0>. */
9791 static void
9792 ubfm32 (sim_cpu *cpu, uint32_t r, uint32_t s)
9793 {
9794 unsigned rd;
9795 unsigned rn = INSTR (9, 5);
9796 uint32_t value = aarch64_get_reg_u32 (cpu, rn, NO_SP);
9797
9798 /* Pick either s+1-r or s+1 consecutive bits out of the original word. */
9799 if (r <= s)
9800 {
9801 /* 31:...:s:xxx:r:...:0 ==> 31:...:s-r:xxx:0.
9802 We want only bits s:xxx:r at the bottom of the word
9803 so we LSL bit s up to bit 31 i.e. by 31 - s
9804 and then we LSR to bring bit 31 down to bit s - r
9805 i.e. by 31 + r - s. */
9806 value <<= 31 - s;
9807 value >>= 31 + r - s;
9808 }
9809 else
9810 {
9811 /* 31:...:s:xxx:0 ==> 31:...:31-(r-1)+s:xxx:31-(r-1):...:0
9812 We want only bits s:xxx:0 starting at it 31-(r-1)
9813 so we LSL bit s up to bit 31 i.e. by 31 - s
9814 and then we LSL to bring bit 31 down to 31-(r-1)+s
9815 i.e. by r - (s + 1). */
9816 value <<= 31 - s;
9817 value >>= r - (s + 1);
9818 }
9819
9820 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9821 rd = INSTR (4, 0);
9822 aarch64_set_reg_u64 (cpu, rd, NO_SP, value);
9823 }
9824
9825 /* 64 bit bitfield move, left and right of affected zeroed
9826 if r <= s Wd<s-r:0> = Wn<s:r> else Wd<64+s-r,64-r> = Wn<s:0>. */
9827 static void
9828 ubfm (sim_cpu *cpu, uint32_t r, uint32_t s)
9829 {
9830 unsigned rd;
9831 unsigned rn = INSTR (9, 5);
9832 uint64_t value = aarch64_get_reg_u64 (cpu, rn, NO_SP);
9833
9834 if (r <= s)
9835 {
9836 /* 63:...:s:xxx:r:...:0 ==> 63:...:s-r:xxx:0.
9837 We want only bits s:xxx:r at the bottom of the word.
9838 So we LSL bit s up to bit 63 i.e. by 63 - s
9839 and then we LSR to bring bit 63 down to bit s - r
9840 i.e. by 63 + r - s. */
9841 value <<= 63 - s;
9842 value >>= 63 + r - s;
9843 }
9844 else
9845 {
9846 /* 63:...:s:xxx:0 ==> 63:...:63-(r-1)+s:xxx:63-(r-1):...:0.
9847 We want only bits s:xxx:0 starting at it 63-(r-1).
9848 So we LSL bit s up to bit 63 i.e. by 63 - s
9849 and then we LSL to bring bit 63 down to 63-(r-1)+s
9850 i.e. by r - (s + 1). */
9851 value <<= 63 - s;
9852 value >>= r - (s + 1);
9853 }
9854
9855 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9856 rd = INSTR (4, 0);
9857 aarch64_set_reg_u64 (cpu, rd, NO_SP, value);
9858 }
9859
9860 /* The signed versions need to insert sign bits
9861 on the left of the inserted bit field. so we do
9862 much the same as the unsigned version except we
9863 use an arithmetic shift right -- this just means
9864 we need to operate on signed values. */
9865
9866 /* 32 bit bitfield move, left of affected sign-extended, right zeroed. */
9867 /* If r <= s Wd<s-r:0> = Wn<s:r> else Wd<32+s-r,32-r> = Wn<s:0>. */
9868 static void
9869 sbfm32 (sim_cpu *cpu, uint32_t r, uint32_t s)
9870 {
9871 unsigned rd;
9872 unsigned rn = INSTR (9, 5);
9873 /* as per ubfm32 but use an ASR instead of an LSR. */
9874 int32_t value = aarch64_get_reg_s32 (cpu, rn, NO_SP);
9875
9876 if (r <= s)
9877 {
9878 value <<= 31 - s;
9879 value >>= 31 + r - s;
9880 }
9881 else
9882 {
9883 value <<= 31 - s;
9884 value >>= r - (s + 1);
9885 }
9886
9887 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9888 rd = INSTR (4, 0);
9889 aarch64_set_reg_u64 (cpu, rd, NO_SP, (uint32_t) value);
9890 }
9891
9892 /* 64 bit bitfield move, left of affected sign-extended, right zeroed. */
9893 /* If r <= s Wd<s-r:0> = Wn<s:r> else Wd<64+s-r,64-r> = Wn<s:0>. */
9894 static void
9895 sbfm (sim_cpu *cpu, uint32_t r, uint32_t s)
9896 {
9897 unsigned rd;
9898 unsigned rn = INSTR (9, 5);
9899 /* acpu per ubfm but use an ASR instead of an LSR. */
9900 int64_t value = aarch64_get_reg_s64 (cpu, rn, NO_SP);
9901
9902 if (r <= s)
9903 {
9904 value <<= 63 - s;
9905 value >>= 63 + r - s;
9906 }
9907 else
9908 {
9909 value <<= 63 - s;
9910 value >>= r - (s + 1);
9911 }
9912
9913 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9914 rd = INSTR (4, 0);
9915 aarch64_set_reg_s64 (cpu, rd, NO_SP, value);
9916 }
9917
9918 /* Finally, these versions leave non-affected bits
9919 as is. so we need to generate the bits as per
9920 ubfm and also generate a mask to pick the
9921 bits from the original and computed values. */
9922
9923 /* 32 bit bitfield move, non-affected bits left as is.
9924 If r <= s Wd<s-r:0> = Wn<s:r> else Wd<32+s-r,32-r> = Wn<s:0>. */
9925 static void
9926 bfm32 (sim_cpu *cpu, uint32_t r, uint32_t s)
9927 {
9928 unsigned rn = INSTR (9, 5);
9929 uint32_t value = aarch64_get_reg_u32 (cpu, rn, NO_SP);
9930 uint32_t mask = -1;
9931 unsigned rd;
9932 uint32_t value2;
9933
9934 /* Pick either s+1-r or s+1 consecutive bits out of the original word. */
9935 if (r <= s)
9936 {
9937 /* 31:...:s:xxx:r:...:0 ==> 31:...:s-r:xxx:0.
9938 We want only bits s:xxx:r at the bottom of the word
9939 so we LSL bit s up to bit 31 i.e. by 31 - s
9940 and then we LSR to bring bit 31 down to bit s - r
9941 i.e. by 31 + r - s. */
9942 value <<= 31 - s;
9943 value >>= 31 + r - s;
9944 /* the mask must include the same bits. */
9945 mask <<= 31 - s;
9946 mask >>= 31 + r - s;
9947 }
9948 else
9949 {
9950 /* 31:...:s:xxx:0 ==> 31:...:31-(r-1)+s:xxx:31-(r-1):...:0.
9951 We want only bits s:xxx:0 starting at it 31-(r-1)
9952 so we LSL bit s up to bit 31 i.e. by 31 - s
9953 and then we LSL to bring bit 31 down to 31-(r-1)+s
9954 i.e. by r - (s + 1). */
9955 value <<= 31 - s;
9956 value >>= r - (s + 1);
9957 /* The mask must include the same bits. */
9958 mask <<= 31 - s;
9959 mask >>= r - (s + 1);
9960 }
9961
9962 rd = INSTR (4, 0);
9963 value2 = aarch64_get_reg_u32 (cpu, rd, NO_SP);
9964
9965 value2 &= ~mask;
9966 value2 |= value;
9967
9968 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
9969 aarch64_set_reg_u64
9970 (cpu, rd, NO_SP, (aarch64_get_reg_u32 (cpu, rd, NO_SP) & ~mask) | value);
9971 }
9972
9973 /* 64 bit bitfield move, non-affected bits left as is.
9974 If r <= s Wd<s-r:0> = Wn<s:r> else Wd<64+s-r,64-r> = Wn<s:0>. */
9975 static void
9976 bfm (sim_cpu *cpu, uint32_t r, uint32_t s)
9977 {
9978 unsigned rd;
9979 unsigned rn = INSTR (9, 5);
9980 uint64_t value = aarch64_get_reg_u64 (cpu, rn, NO_SP);
9981 uint64_t mask = 0xffffffffffffffffULL;
9982
9983 if (r <= s)
9984 {
9985 /* 63:...:s:xxx:r:...:0 ==> 63:...:s-r:xxx:0.
9986 We want only bits s:xxx:r at the bottom of the word
9987 so we LSL bit s up to bit 63 i.e. by 63 - s
9988 and then we LSR to bring bit 63 down to bit s - r
9989 i.e. by 63 + r - s. */
9990 value <<= 63 - s;
9991 value >>= 63 + r - s;
9992 /* The mask must include the same bits. */
9993 mask <<= 63 - s;
9994 mask >>= 63 + r - s;
9995 }
9996 else
9997 {
9998 /* 63:...:s:xxx:0 ==> 63:...:63-(r-1)+s:xxx:63-(r-1):...:0
9999 We want only bits s:xxx:0 starting at it 63-(r-1)
10000 so we LSL bit s up to bit 63 i.e. by 63 - s
10001 and then we LSL to bring bit 63 down to 63-(r-1)+s
10002 i.e. by r - (s + 1). */
10003 value <<= 63 - s;
10004 value >>= r - (s + 1);
10005 /* The mask must include the same bits. */
10006 mask <<= 63 - s;
10007 mask >>= r - (s + 1);
10008 }
10009
10010 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
10011 rd = INSTR (4, 0);
10012 aarch64_set_reg_u64
10013 (cpu, rd, NO_SP, (aarch64_get_reg_u64 (cpu, rd, NO_SP) & ~mask) | value);
10014 }
10015
10016 static void
10017 dexBitfieldImmediate (sim_cpu *cpu)
10018 {
10019 /* assert instr[28:23] = 100110
10020 instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit
10021 instr[30,29] = op : 0 ==> SBFM, 1 ==> BFM, 2 ==> UBFM, 3 ==> UNALLOC
10022 instr[22] = N : must be 0 for 32 bit, 1 for 64 bit ow UNALLOC
10023 instr[21,16] = immr : 0xxxxx for 32 bit, xxxxxx for 64 bit
10024 instr[15,10] = imms : 0xxxxx for 32 bit, xxxxxx for 64 bit
10025 instr[9,5] = Rn
10026 instr[4,0] = Rd */
10027
10028 /* 32 bit operations must have N = 0 or else we have an UNALLOC. */
10029 uint32_t dispatch;
10030 uint32_t imms;
10031 uint32_t size = INSTR (31, 31);
10032 uint32_t N = INSTR (22, 22);
10033 /* 32 bit operations must have immr[5] = 0 and imms[5] = 0. */
10034 /* or else we have an UNALLOC. */
10035 uint32_t immr = INSTR (21, 16);
10036
10037 if (~size & N)
10038 HALT_UNALLOC;
10039
10040 if (!size && uimm (immr, 5, 5))
10041 HALT_UNALLOC;
10042
10043 imms = INSTR (15, 10);
10044 if (!size && uimm (imms, 5, 5))
10045 HALT_UNALLOC;
10046
10047 /* Switch on combined size and op. */
10048 dispatch = INSTR (31, 29);
10049 switch (dispatch)
10050 {
10051 case 0: sbfm32 (cpu, immr, imms); return;
10052 case 1: bfm32 (cpu, immr, imms); return;
10053 case 2: ubfm32 (cpu, immr, imms); return;
10054 case 4: sbfm (cpu, immr, imms); return;
10055 case 5: bfm (cpu, immr, imms); return;
10056 case 6: ubfm (cpu, immr, imms); return;
10057 default: HALT_UNALLOC;
10058 }
10059 }
10060
10061 static void
10062 do_EXTR_32 (sim_cpu *cpu)
10063 {
10064 /* instr[31:21] = 00010011100
10065 instr[20,16] = Rm
10066 instr[15,10] = imms : 0xxxxx for 32 bit
10067 instr[9,5] = Rn
10068 instr[4,0] = Rd */
10069 unsigned rm = INSTR (20, 16);
10070 unsigned imms = INSTR (15, 10) & 31;
10071 unsigned rn = INSTR ( 9, 5);
10072 unsigned rd = INSTR ( 4, 0);
10073 uint64_t val1;
10074 uint64_t val2;
10075
10076 val1 = aarch64_get_reg_u32 (cpu, rm, NO_SP);
10077 val1 >>= imms;
10078 val2 = aarch64_get_reg_u32 (cpu, rn, NO_SP);
10079 val2 <<= (32 - imms);
10080
10081 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
10082 aarch64_set_reg_u64 (cpu, rd, NO_SP, val1 | val2);
10083 }
10084
10085 static void
10086 do_EXTR_64 (sim_cpu *cpu)
10087 {
10088 /* instr[31:21] = 10010011100
10089 instr[20,16] = Rm
10090 instr[15,10] = imms
10091 instr[9,5] = Rn
10092 instr[4,0] = Rd */
10093 unsigned rm = INSTR (20, 16);
10094 unsigned imms = INSTR (15, 10) & 63;
10095 unsigned rn = INSTR ( 9, 5);
10096 unsigned rd = INSTR ( 4, 0);
10097 uint64_t val;
10098
10099 val = aarch64_get_reg_u64 (cpu, rm, NO_SP);
10100 val >>= imms;
10101 val |= (aarch64_get_reg_u64 (cpu, rn, NO_SP) << (64 - imms));
10102
10103 aarch64_set_reg_u64 (cpu, rd, NO_SP, val);
10104 }
10105
10106 static void
10107 dexExtractImmediate (sim_cpu *cpu)
10108 {
10109 /* assert instr[28:23] = 100111
10110 instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit
10111 instr[30,29] = op21 : 0 ==> EXTR, 1,2,3 ==> UNALLOC
10112 instr[22] = N : must be 0 for 32 bit, 1 for 64 bit or UNALLOC
10113 instr[21] = op0 : must be 0 or UNALLOC
10114 instr[20,16] = Rm
10115 instr[15,10] = imms : 0xxxxx for 32 bit, xxxxxx for 64 bit
10116 instr[9,5] = Rn
10117 instr[4,0] = Rd */
10118
10119 /* 32 bit operations must have N = 0 or else we have an UNALLOC. */
10120 /* 64 bit operations must have N = 1 or else we have an UNALLOC. */
10121 uint32_t dispatch;
10122 uint32_t size = INSTR (31, 31);
10123 uint32_t N = INSTR (22, 22);
10124 /* 32 bit operations must have imms[5] = 0
10125 or else we have an UNALLOC. */
10126 uint32_t imms = INSTR (15, 10);
10127
10128 if (size ^ N)
10129 HALT_UNALLOC;
10130
10131 if (!size && uimm (imms, 5, 5))
10132 HALT_UNALLOC;
10133
10134 /* Switch on combined size and op. */
10135 dispatch = INSTR (31, 29);
10136
10137 if (dispatch == 0)
10138 do_EXTR_32 (cpu);
10139
10140 else if (dispatch == 4)
10141 do_EXTR_64 (cpu);
10142
10143 else if (dispatch == 1)
10144 HALT_NYI;
10145 else
10146 HALT_UNALLOC;
10147 }
10148
10149 static void
10150 dexDPImm (sim_cpu *cpu)
10151 {
10152 /* uint32_t group = dispatchGroup (aarch64_get_instr (cpu));
10153 assert group == GROUP_DPIMM_1000 || grpoup == GROUP_DPIMM_1001
10154 bits [25,23] of a DPImm are the secondary dispatch vector. */
10155 uint32_t group2 = dispatchDPImm (aarch64_get_instr (cpu));
10156
10157 switch (group2)
10158 {
10159 case DPIMM_PCADR_000:
10160 case DPIMM_PCADR_001:
10161 dexPCRelAddressing (cpu);
10162 return;
10163
10164 case DPIMM_ADDSUB_010:
10165 case DPIMM_ADDSUB_011:
10166 dexAddSubtractImmediate (cpu);
10167 return;
10168
10169 case DPIMM_LOG_100:
10170 dexLogicalImmediate (cpu);
10171 return;
10172
10173 case DPIMM_MOV_101:
10174 dexMoveWideImmediate (cpu);
10175 return;
10176
10177 case DPIMM_BITF_110:
10178 dexBitfieldImmediate (cpu);
10179 return;
10180
10181 case DPIMM_EXTR_111:
10182 dexExtractImmediate (cpu);
10183 return;
10184
10185 default:
10186 /* Should never reach here. */
10187 HALT_NYI;
10188 }
10189 }
10190
10191 static void
10192 dexLoadUnscaledImmediate (sim_cpu *cpu)
10193 {
10194 /* instr[29,24] == 111_00
10195 instr[21] == 0
10196 instr[11,10] == 00
10197 instr[31,30] = size
10198 instr[26] = V
10199 instr[23,22] = opc
10200 instr[20,12] = simm9
10201 instr[9,5] = rn may be SP. */
10202 /* unsigned rt = INSTR (4, 0); */
10203 uint32_t V = INSTR (26, 26);
10204 uint32_t dispatch = ((INSTR (31, 30) << 2) | INSTR (23, 22));
10205 int32_t imm = simm32 (aarch64_get_instr (cpu), 20, 12);
10206
10207 if (!V)
10208 {
10209 /* GReg operations. */
10210 switch (dispatch)
10211 {
10212 case 0: sturb (cpu, imm); return;
10213 case 1: ldurb32 (cpu, imm); return;
10214 case 2: ldursb64 (cpu, imm); return;
10215 case 3: ldursb32 (cpu, imm); return;
10216 case 4: sturh (cpu, imm); return;
10217 case 5: ldurh32 (cpu, imm); return;
10218 case 6: ldursh64 (cpu, imm); return;
10219 case 7: ldursh32 (cpu, imm); return;
10220 case 8: stur32 (cpu, imm); return;
10221 case 9: ldur32 (cpu, imm); return;
10222 case 10: ldursw (cpu, imm); return;
10223 case 12: stur64 (cpu, imm); return;
10224 case 13: ldur64 (cpu, imm); return;
10225
10226 case 14:
10227 /* PRFUM NYI. */
10228 HALT_NYI;
10229
10230 default:
10231 case 11:
10232 case 15:
10233 HALT_UNALLOC;
10234 }
10235 }
10236
10237 /* FReg operations. */
10238 switch (dispatch)
10239 {
10240 case 2: fsturq (cpu, imm); return;
10241 case 3: fldurq (cpu, imm); return;
10242 case 8: fsturs (cpu, imm); return;
10243 case 9: fldurs (cpu, imm); return;
10244 case 12: fsturd (cpu, imm); return;
10245 case 13: fldurd (cpu, imm); return;
10246
10247 case 0: /* STUR 8 bit FP. */
10248 case 1: /* LDUR 8 bit FP. */
10249 case 4: /* STUR 16 bit FP. */
10250 case 5: /* LDUR 8 bit FP. */
10251 HALT_NYI;
10252
10253 default:
10254 case 6:
10255 case 7:
10256 case 10:
10257 case 11:
10258 case 14:
10259 case 15:
10260 HALT_UNALLOC;
10261 }
10262 }
10263
10264 /* N.B. A preliminary note regarding all the ldrs<x>32
10265 instructions
10266
10267 The signed value loaded by these instructions is cast to unsigned
10268 before being assigned to aarch64_get_reg_u64 (cpu, N) i.e. to the
10269 64 bit element of the GReg union. this performs a 32 bit sign extension
10270 (as required) but avoids 64 bit sign extension, thus ensuring that the
10271 top half of the register word is zero. this is what the spec demands
10272 when a 32 bit load occurs. */
10273
10274 /* 32 bit load sign-extended byte scaled unsigned 12 bit. */
10275 static void
10276 ldrsb32_abs (sim_cpu *cpu, uint32_t offset)
10277 {
10278 unsigned int rn = INSTR (9, 5);
10279 unsigned int rt = INSTR (4, 0);
10280
10281 /* The target register may not be SP but the source may be
10282 there is no scaling required for a byte load. */
10283 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset;
10284 aarch64_set_reg_u64 (cpu, rt, NO_SP,
10285 (int64_t) aarch64_get_mem_s8 (cpu, address));
10286 }
10287
10288 /* 32 bit load sign-extended byte scaled or unscaled zero-
10289 or sign-extended 32-bit register offset. */
10290 static void
10291 ldrsb32_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
10292 {
10293 unsigned int rm = INSTR (20, 16);
10294 unsigned int rn = INSTR (9, 5);
10295 unsigned int rt = INSTR (4, 0);
10296
10297 /* rn may reference SP, rm and rt must reference ZR. */
10298
10299 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
10300 int64_t displacement = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP),
10301 extension);
10302
10303 /* There is no scaling required for a byte load. */
10304 aarch64_set_reg_u64
10305 (cpu, rt, NO_SP, (int64_t) aarch64_get_mem_s8 (cpu, address
10306 + displacement));
10307 }
10308
10309 /* 32 bit load sign-extended byte unscaled signed 9 bit with
10310 pre- or post-writeback. */
10311 static void
10312 ldrsb32_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
10313 {
10314 uint64_t address;
10315 unsigned int rn = INSTR (9, 5);
10316 unsigned int rt = INSTR (4, 0);
10317
10318 if (rn == rt && wb != NoWriteBack)
10319 HALT_UNALLOC;
10320
10321 address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
10322
10323 if (wb == Pre)
10324 address += offset;
10325
10326 aarch64_set_reg_u64 (cpu, rt, NO_SP,
10327 (int64_t) aarch64_get_mem_s8 (cpu, address));
10328
10329 if (wb == Post)
10330 address += offset;
10331
10332 if (wb != NoWriteBack)
10333 aarch64_set_reg_u64 (cpu, rn, NO_SP, address);
10334 }
10335
10336 /* 8 bit store scaled. */
10337 static void
10338 fstrb_abs (sim_cpu *cpu, uint32_t offset)
10339 {
10340 unsigned st = INSTR (4, 0);
10341 unsigned rn = INSTR (9, 5);
10342
10343 aarch64_set_mem_u8 (cpu,
10344 aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset,
10345 aarch64_get_vec_u8 (cpu, st, 0));
10346 }
10347
10348 /* 8 bit store scaled or unscaled zero- or
10349 sign-extended 8-bit register offset. */
10350 static void
10351 fstrb_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
10352 {
10353 unsigned rm = INSTR (20, 16);
10354 unsigned rn = INSTR (9, 5);
10355 unsigned st = INSTR (4, 0);
10356
10357 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
10358 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP),
10359 extension);
10360 uint64_t displacement = scaling == Scaled ? extended : 0;
10361
10362 aarch64_set_mem_u8
10363 (cpu, address + displacement, aarch64_get_vec_u8 (cpu, st, 0));
10364 }
10365
10366 /* 16 bit store scaled. */
10367 static void
10368 fstrh_abs (sim_cpu *cpu, uint32_t offset)
10369 {
10370 unsigned st = INSTR (4, 0);
10371 unsigned rn = INSTR (9, 5);
10372
10373 aarch64_set_mem_u16
10374 (cpu,
10375 aarch64_get_reg_u64 (cpu, rn, SP_OK) + SCALE (offset, 16),
10376 aarch64_get_vec_u16 (cpu, st, 0));
10377 }
10378
10379 /* 16 bit store scaled or unscaled zero-
10380 or sign-extended 16-bit register offset. */
10381 static void
10382 fstrh_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
10383 {
10384 unsigned rm = INSTR (20, 16);
10385 unsigned rn = INSTR (9, 5);
10386 unsigned st = INSTR (4, 0);
10387
10388 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
10389 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP),
10390 extension);
10391 uint64_t displacement = OPT_SCALE (extended, 16, scaling);
10392
10393 aarch64_set_mem_u16
10394 (cpu, address + displacement, aarch64_get_vec_u16 (cpu, st, 0));
10395 }
10396
10397 /* 32 bit store scaled unsigned 12 bit. */
10398 static void
10399 fstrs_abs (sim_cpu *cpu, uint32_t offset)
10400 {
10401 unsigned st = INSTR (4, 0);
10402 unsigned rn = INSTR (9, 5);
10403
10404 aarch64_set_mem_u32
10405 (cpu,
10406 aarch64_get_reg_u64 (cpu, rn, SP_OK) + SCALE (offset, 32),
10407 aarch64_get_vec_u32 (cpu, st, 0));
10408 }
10409
10410 /* 32 bit store unscaled signed 9 bit with pre- or post-writeback. */
10411 static void
10412 fstrs_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
10413 {
10414 unsigned rn = INSTR (9, 5);
10415 unsigned st = INSTR (4, 0);
10416
10417 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
10418
10419 if (wb != Post)
10420 address += offset;
10421
10422 aarch64_set_mem_u32 (cpu, address, aarch64_get_vec_u32 (cpu, st, 0));
10423
10424 if (wb == Post)
10425 address += offset;
10426
10427 if (wb != NoWriteBack)
10428 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
10429 }
10430
10431 /* 32 bit store scaled or unscaled zero-
10432 or sign-extended 32-bit register offset. */
10433 static void
10434 fstrs_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
10435 {
10436 unsigned rm = INSTR (20, 16);
10437 unsigned rn = INSTR (9, 5);
10438 unsigned st = INSTR (4, 0);
10439
10440 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
10441 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP),
10442 extension);
10443 uint64_t displacement = OPT_SCALE (extended, 32, scaling);
10444
10445 aarch64_set_mem_u32
10446 (cpu, address + displacement, aarch64_get_vec_u32 (cpu, st, 0));
10447 }
10448
10449 /* 64 bit store scaled unsigned 12 bit. */
10450 static void
10451 fstrd_abs (sim_cpu *cpu, uint32_t offset)
10452 {
10453 unsigned st = INSTR (4, 0);
10454 unsigned rn = INSTR (9, 5);
10455
10456 aarch64_set_mem_u64
10457 (cpu,
10458 aarch64_get_reg_u64 (cpu, rn, SP_OK) + SCALE (offset, 64),
10459 aarch64_get_vec_u64 (cpu, st, 0));
10460 }
10461
10462 /* 64 bit store unscaled signed 9 bit with pre- or post-writeback. */
10463 static void
10464 fstrd_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
10465 {
10466 unsigned rn = INSTR (9, 5);
10467 unsigned st = INSTR (4, 0);
10468
10469 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
10470
10471 if (wb != Post)
10472 address += offset;
10473
10474 aarch64_set_mem_u64 (cpu, address, aarch64_get_vec_u64 (cpu, st, 0));
10475
10476 if (wb == Post)
10477 address += offset;
10478
10479 if (wb != NoWriteBack)
10480 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
10481 }
10482
10483 /* 64 bit store scaled or unscaled zero-
10484 or sign-extended 32-bit register offset. */
10485 static void
10486 fstrd_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
10487 {
10488 unsigned rm = INSTR (20, 16);
10489 unsigned rn = INSTR (9, 5);
10490 unsigned st = INSTR (4, 0);
10491
10492 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
10493 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP),
10494 extension);
10495 uint64_t displacement = OPT_SCALE (extended, 64, scaling);
10496
10497 aarch64_set_mem_u64
10498 (cpu, address + displacement, aarch64_get_vec_u64 (cpu, st, 0));
10499 }
10500
10501 /* 128 bit store scaled unsigned 12 bit. */
10502 static void
10503 fstrq_abs (sim_cpu *cpu, uint32_t offset)
10504 {
10505 FRegister a;
10506 unsigned st = INSTR (4, 0);
10507 unsigned rn = INSTR (9, 5);
10508 uint64_t addr;
10509
10510 aarch64_get_FP_long_double (cpu, st, & a);
10511
10512 addr = aarch64_get_reg_u64 (cpu, rn, SP_OK) + SCALE (offset, 128);
10513 aarch64_set_mem_long_double (cpu, addr, a);
10514 }
10515
10516 /* 128 bit store unscaled signed 9 bit with pre- or post-writeback. */
10517 static void
10518 fstrq_wb (sim_cpu *cpu, int32_t offset, WriteBack wb)
10519 {
10520 FRegister a;
10521 unsigned rn = INSTR (9, 5);
10522 unsigned st = INSTR (4, 0);
10523 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
10524
10525 if (wb != Post)
10526 address += offset;
10527
10528 aarch64_get_FP_long_double (cpu, st, & a);
10529 aarch64_set_mem_long_double (cpu, address, a);
10530
10531 if (wb == Post)
10532 address += offset;
10533
10534 if (wb != NoWriteBack)
10535 aarch64_set_reg_u64 (cpu, rn, SP_OK, address);
10536 }
10537
10538 /* 128 bit store scaled or unscaled zero-
10539 or sign-extended 32-bit register offset. */
10540 static void
10541 fstrq_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension)
10542 {
10543 unsigned rm = INSTR (20, 16);
10544 unsigned rn = INSTR (9, 5);
10545 unsigned st = INSTR (4, 0);
10546
10547 uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK);
10548 int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP),
10549 extension);
10550 uint64_t displacement = OPT_SCALE (extended, 128, scaling);
10551
10552 FRegister a;
10553
10554 aarch64_get_FP_long_double (cpu, st, & a);
10555 aarch64_set_mem_long_double (cpu, address + displacement, a);
10556 }
10557
10558 static void
10559 dexLoadImmediatePrePost (sim_cpu *cpu)
10560 {
10561 /* instr[31,30] = size
10562 instr[29,27] = 111
10563 instr[26] = V
10564 instr[25,24] = 00
10565 instr[23,22] = opc
10566 instr[21] = 0
10567 instr[20,12] = simm9
10568 instr[11] = wb : 0 ==> Post, 1 ==> Pre
10569 instr[10] = 0
10570 instr[9,5] = Rn may be SP.
10571 instr[4,0] = Rt */
10572
10573 uint32_t V = INSTR (26, 26);
10574 uint32_t dispatch = ((INSTR (31, 30) << 2) | INSTR (23, 22));
10575 int32_t imm = simm32 (aarch64_get_instr (cpu), 20, 12);
10576 WriteBack wb = INSTR (11, 11);
10577
10578 if (!V)
10579 {
10580 /* GReg operations. */
10581 switch (dispatch)
10582 {
10583 case 0: strb_wb (cpu, imm, wb); return;
10584 case 1: ldrb32_wb (cpu, imm, wb); return;
10585 case 2: ldrsb_wb (cpu, imm, wb); return;
10586 case 3: ldrsb32_wb (cpu, imm, wb); return;
10587 case 4: strh_wb (cpu, imm, wb); return;
10588 case 5: ldrh32_wb (cpu, imm, wb); return;
10589 case 6: ldrsh64_wb (cpu, imm, wb); return;
10590 case 7: ldrsh32_wb (cpu, imm, wb); return;
10591 case 8: str32_wb (cpu, imm, wb); return;
10592 case 9: ldr32_wb (cpu, imm, wb); return;
10593 case 10: ldrsw_wb (cpu, imm, wb); return;
10594 case 12: str_wb (cpu, imm, wb); return;
10595 case 13: ldr_wb (cpu, imm, wb); return;
10596
10597 default:
10598 case 11:
10599 case 14:
10600 case 15:
10601 HALT_UNALLOC;
10602 }
10603 }
10604
10605 /* FReg operations. */
10606 switch (dispatch)
10607 {
10608 case 2: fstrq_wb (cpu, imm, wb); return;
10609 case 3: fldrq_wb (cpu, imm, wb); return;
10610 case 8: fstrs_wb (cpu, imm, wb); return;
10611 case 9: fldrs_wb (cpu, imm, wb); return;
10612 case 12: fstrd_wb (cpu, imm, wb); return;
10613 case 13: fldrd_wb (cpu, imm, wb); return;
10614
10615 case 0: /* STUR 8 bit FP. */
10616 case 1: /* LDUR 8 bit FP. */
10617 case 4: /* STUR 16 bit FP. */
10618 case 5: /* LDUR 8 bit FP. */
10619 HALT_NYI;
10620
10621 default:
10622 case 6:
10623 case 7:
10624 case 10:
10625 case 11:
10626 case 14:
10627 case 15:
10628 HALT_UNALLOC;
10629 }
10630 }
10631
10632 static void
10633 dexLoadRegisterOffset (sim_cpu *cpu)
10634 {
10635 /* instr[31,30] = size
10636 instr[29,27] = 111
10637 instr[26] = V
10638 instr[25,24] = 00
10639 instr[23,22] = opc
10640 instr[21] = 1
10641 instr[20,16] = rm
10642 instr[15,13] = option : 010 ==> UXTW, 011 ==> UXTX/LSL,
10643 110 ==> SXTW, 111 ==> SXTX,
10644 ow ==> RESERVED
10645 instr[12] = scaled
10646 instr[11,10] = 10
10647 instr[9,5] = rn
10648 instr[4,0] = rt. */
10649
10650 uint32_t V = INSTR (26, 26);
10651 uint32_t dispatch = ((INSTR (31, 30) << 2) | INSTR (23, 22));
10652 Scaling scale = INSTR (12, 12);
10653 Extension extensionType = INSTR (15, 13);
10654
10655 /* Check for illegal extension types. */
10656 if (uimm (extensionType, 1, 1) == 0)
10657 HALT_UNALLOC;
10658
10659 if (extensionType == UXTX || extensionType == SXTX)
10660 extensionType = NoExtension;
10661
10662 if (!V)
10663 {
10664 /* GReg operations. */
10665 switch (dispatch)
10666 {
10667 case 0: strb_scale_ext (cpu, scale, extensionType); return;
10668 case 1: ldrb32_scale_ext (cpu, scale, extensionType); return;
10669 case 2: ldrsb_scale_ext (cpu, scale, extensionType); return;
10670 case 3: ldrsb32_scale_ext (cpu, scale, extensionType); return;
10671 case 4: strh_scale_ext (cpu, scale, extensionType); return;
10672 case 5: ldrh32_scale_ext (cpu, scale, extensionType); return;
10673 case 6: ldrsh_scale_ext (cpu, scale, extensionType); return;
10674 case 7: ldrsh32_scale_ext (cpu, scale, extensionType); return;
10675 case 8: str32_scale_ext (cpu, scale, extensionType); return;
10676 case 9: ldr32_scale_ext (cpu, scale, extensionType); return;
10677 case 10: ldrsw_scale_ext (cpu, scale, extensionType); return;
10678 case 12: str_scale_ext (cpu, scale, extensionType); return;
10679 case 13: ldr_scale_ext (cpu, scale, extensionType); return;
10680 case 14: prfm_scale_ext (cpu, scale, extensionType); return;
10681
10682 default:
10683 case 11:
10684 case 15:
10685 HALT_UNALLOC;
10686 }
10687 }
10688
10689 /* FReg operations. */
10690 switch (dispatch)
10691 {
10692 case 1: /* LDUR 8 bit FP. */
10693 HALT_NYI;
10694 case 3: fldrq_scale_ext (cpu, scale, extensionType); return;
10695 case 5: /* LDUR 8 bit FP. */
10696 HALT_NYI;
10697 case 9: fldrs_scale_ext (cpu, scale, extensionType); return;
10698 case 13: fldrd_scale_ext (cpu, scale, extensionType); return;
10699
10700 case 0: fstrb_scale_ext (cpu, scale, extensionType); return;
10701 case 2: fstrq_scale_ext (cpu, scale, extensionType); return;
10702 case 4: fstrh_scale_ext (cpu, scale, extensionType); return;
10703 case 8: fstrs_scale_ext (cpu, scale, extensionType); return;
10704 case 12: fstrd_scale_ext (cpu, scale, extensionType); return;
10705
10706 default:
10707 case 6:
10708 case 7:
10709 case 10:
10710 case 11:
10711 case 14:
10712 case 15:
10713 HALT_UNALLOC;
10714 }
10715 }
10716
10717 static void
10718 dexLoadUnsignedImmediate (sim_cpu *cpu)
10719 {
10720 /* instr[29,24] == 111_01
10721 instr[31,30] = size
10722 instr[26] = V
10723 instr[23,22] = opc
10724 instr[21,10] = uimm12 : unsigned immediate offset
10725 instr[9,5] = rn may be SP.
10726 instr[4,0] = rt. */
10727
10728 uint32_t V = INSTR (26,26);
10729 uint32_t dispatch = ((INSTR (31, 30) << 2) | INSTR (23, 22));
10730 uint32_t imm = INSTR (21, 10);
10731
10732 if (!V)
10733 {
10734 /* GReg operations. */
10735 switch (dispatch)
10736 {
10737 case 0: strb_abs (cpu, imm); return;
10738 case 1: ldrb32_abs (cpu, imm); return;
10739 case 2: ldrsb_abs (cpu, imm); return;
10740 case 3: ldrsb32_abs (cpu, imm); return;
10741 case 4: strh_abs (cpu, imm); return;
10742 case 5: ldrh32_abs (cpu, imm); return;
10743 case 6: ldrsh_abs (cpu, imm); return;
10744 case 7: ldrsh32_abs (cpu, imm); return;
10745 case 8: str32_abs (cpu, imm); return;
10746 case 9: ldr32_abs (cpu, imm); return;
10747 case 10: ldrsw_abs (cpu, imm); return;
10748 case 12: str_abs (cpu, imm); return;
10749 case 13: ldr_abs (cpu, imm); return;
10750 case 14: prfm_abs (cpu, imm); return;
10751
10752 default:
10753 case 11:
10754 case 15:
10755 HALT_UNALLOC;
10756 }
10757 }
10758
10759 /* FReg operations. */
10760 switch (dispatch)
10761 {
10762 case 0: fstrb_abs (cpu, imm); return;
10763 case 4: fstrh_abs (cpu, imm); return;
10764 case 8: fstrs_abs (cpu, imm); return;
10765 case 12: fstrd_abs (cpu, imm); return;
10766 case 2: fstrq_abs (cpu, imm); return;
10767
10768 case 1: fldrb_abs (cpu, imm); return;
10769 case 5: fldrh_abs (cpu, imm); return;
10770 case 9: fldrs_abs (cpu, imm); return;
10771 case 13: fldrd_abs (cpu, imm); return;
10772 case 3: fldrq_abs (cpu, imm); return;
10773
10774 default:
10775 case 6:
10776 case 7:
10777 case 10:
10778 case 11:
10779 case 14:
10780 case 15:
10781 HALT_UNALLOC;
10782 }
10783 }
10784
10785 static void
10786 dexLoadExclusive (sim_cpu *cpu)
10787 {
10788 /* assert instr[29:24] = 001000;
10789 instr[31,30] = size
10790 instr[23] = 0 if exclusive
10791 instr[22] = L : 1 if load, 0 if store
10792 instr[21] = 1 if pair
10793 instr[20,16] = Rs
10794 instr[15] = o0 : 1 if ordered
10795 instr[14,10] = Rt2
10796 instr[9,5] = Rn
10797 instr[4.0] = Rt. */
10798
10799 switch (INSTR (22, 21))
10800 {
10801 case 2: ldxr (cpu); return;
10802 case 0: stxr (cpu); return;
10803 default: HALT_NYI;
10804 }
10805 }
10806
10807 static void
10808 dexLoadOther (sim_cpu *cpu)
10809 {
10810 uint32_t dispatch;
10811
10812 /* instr[29,25] = 111_0
10813 instr[24] == 0 ==> dispatch, 1 ==> ldst reg unsigned immediate
10814 instr[21:11,10] is the secondary dispatch. */
10815 if (INSTR (24, 24))
10816 {
10817 dexLoadUnsignedImmediate (cpu);
10818 return;
10819 }
10820
10821 dispatch = ((INSTR (21, 21) << 2) | INSTR (11, 10));
10822 switch (dispatch)
10823 {
10824 case 0: dexLoadUnscaledImmediate (cpu); return;
10825 case 1: dexLoadImmediatePrePost (cpu); return;
10826 case 3: dexLoadImmediatePrePost (cpu); return;
10827 case 6: dexLoadRegisterOffset (cpu); return;
10828
10829 default:
10830 case 2:
10831 case 4:
10832 case 5:
10833 case 7:
10834 HALT_NYI;
10835 }
10836 }
10837
10838 static void
10839 store_pair_u32 (sim_cpu *cpu, int32_t offset, WriteBack wb)
10840 {
10841 unsigned rn = INSTR (14, 10);
10842 unsigned rd = INSTR (9, 5);
10843 unsigned rm = INSTR (4, 0);
10844 uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK);
10845
10846 if ((rn == rd || rm == rd) && wb != NoWriteBack)
10847 HALT_UNALLOC; /* ??? */
10848
10849 offset <<= 2;
10850
10851 if (wb != Post)
10852 address += offset;
10853
10854 aarch64_set_mem_u32 (cpu, address,
10855 aarch64_get_reg_u32 (cpu, rm, NO_SP));
10856 aarch64_set_mem_u32 (cpu, address + 4,
10857 aarch64_get_reg_u32 (cpu, rn, NO_SP));
10858
10859 if (wb == Post)
10860 address += offset;
10861
10862 if (wb != NoWriteBack)
10863 aarch64_set_reg_u64 (cpu, rd, SP_OK, address);
10864 }
10865
10866 static void
10867 store_pair_u64 (sim_cpu *cpu, int32_t offset, WriteBack wb)
10868 {
10869 unsigned rn = INSTR (14, 10);
10870 unsigned rd = INSTR (9, 5);
10871 unsigned rm = INSTR (4, 0);
10872 uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK);
10873
10874 if ((rn == rd || rm == rd) && wb != NoWriteBack)
10875 HALT_UNALLOC; /* ??? */
10876
10877 offset <<= 3;
10878
10879 if (wb != Post)
10880 address += offset;
10881
10882 aarch64_set_mem_u64 (cpu, address,
10883 aarch64_get_reg_u64 (cpu, rm, NO_SP));
10884 aarch64_set_mem_u64 (cpu, address + 8,
10885 aarch64_get_reg_u64 (cpu, rn, NO_SP));
10886
10887 if (wb == Post)
10888 address += offset;
10889
10890 if (wb != NoWriteBack)
10891 aarch64_set_reg_u64 (cpu, rd, SP_OK, address);
10892 }
10893
10894 static void
10895 load_pair_u32 (sim_cpu *cpu, int32_t offset, WriteBack wb)
10896 {
10897 unsigned rn = INSTR (14, 10);
10898 unsigned rd = INSTR (9, 5);
10899 unsigned rm = INSTR (4, 0);
10900 uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK);
10901
10902 /* Treat this as unalloc to make sure we don't do it. */
10903 if (rn == rm)
10904 HALT_UNALLOC;
10905
10906 offset <<= 2;
10907
10908 if (wb != Post)
10909 address += offset;
10910
10911 aarch64_set_reg_u64 (cpu, rm, SP_OK, aarch64_get_mem_u32 (cpu, address));
10912 aarch64_set_reg_u64 (cpu, rn, SP_OK, aarch64_get_mem_u32 (cpu, address + 4));
10913
10914 if (wb == Post)
10915 address += offset;
10916
10917 if (wb != NoWriteBack)
10918 aarch64_set_reg_u64 (cpu, rd, SP_OK, address);
10919 }
10920
10921 static void
10922 load_pair_s32 (sim_cpu *cpu, int32_t offset, WriteBack wb)
10923 {
10924 unsigned rn = INSTR (14, 10);
10925 unsigned rd = INSTR (9, 5);
10926 unsigned rm = INSTR (4, 0);
10927 uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK);
10928
10929 /* Treat this as unalloc to make sure we don't do it. */
10930 if (rn == rm)
10931 HALT_UNALLOC;
10932
10933 offset <<= 2;
10934
10935 if (wb != Post)
10936 address += offset;
10937
10938 aarch64_set_reg_s64 (cpu, rm, SP_OK, aarch64_get_mem_s32 (cpu, address));
10939 aarch64_set_reg_s64 (cpu, rn, SP_OK, aarch64_get_mem_s32 (cpu, address + 4));
10940
10941 if (wb == Post)
10942 address += offset;
10943
10944 if (wb != NoWriteBack)
10945 aarch64_set_reg_u64 (cpu, rd, SP_OK, address);
10946 }
10947
10948 static void
10949 load_pair_u64 (sim_cpu *cpu, int32_t offset, WriteBack wb)
10950 {
10951 unsigned rn = INSTR (14, 10);
10952 unsigned rd = INSTR (9, 5);
10953 unsigned rm = INSTR (4, 0);
10954 uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK);
10955
10956 /* Treat this as unalloc to make sure we don't do it. */
10957 if (rn == rm)
10958 HALT_UNALLOC;
10959
10960 offset <<= 3;
10961
10962 if (wb != Post)
10963 address += offset;
10964
10965 aarch64_set_reg_u64 (cpu, rm, SP_OK, aarch64_get_mem_u64 (cpu, address));
10966 aarch64_set_reg_u64 (cpu, rn, SP_OK, aarch64_get_mem_u64 (cpu, address + 8));
10967
10968 if (wb == Post)
10969 address += offset;
10970
10971 if (wb != NoWriteBack)
10972 aarch64_set_reg_u64 (cpu, rd, SP_OK, address);
10973 }
10974
10975 static void
10976 dex_load_store_pair_gr (sim_cpu *cpu)
10977 {
10978 /* instr[31,30] = size (10=> 64-bit, 01=> signed 32-bit, 00=> 32-bit)
10979 instr[29,25] = instruction encoding: 101_0
10980 instr[26] = V : 1 if fp 0 if gp
10981 instr[24,23] = addressing mode (10=> offset, 01=> post, 11=> pre)
10982 instr[22] = load/store (1=> load)
10983 instr[21,15] = signed, scaled, offset
10984 instr[14,10] = Rn
10985 instr[ 9, 5] = Rd
10986 instr[ 4, 0] = Rm. */
10987
10988 uint32_t dispatch = ((INSTR (31, 30) << 3) | INSTR (24, 22));
10989 int32_t offset = simm32 (aarch64_get_instr (cpu), 21, 15);
10990
10991 switch (dispatch)
10992 {
10993 case 2: store_pair_u32 (cpu, offset, Post); return;
10994 case 3: load_pair_u32 (cpu, offset, Post); return;
10995 case 4: store_pair_u32 (cpu, offset, NoWriteBack); return;
10996 case 5: load_pair_u32 (cpu, offset, NoWriteBack); return;
10997 case 6: store_pair_u32 (cpu, offset, Pre); return;
10998 case 7: load_pair_u32 (cpu, offset, Pre); return;
10999
11000 case 11: load_pair_s32 (cpu, offset, Post); return;
11001 case 13: load_pair_s32 (cpu, offset, NoWriteBack); return;
11002 case 15: load_pair_s32 (cpu, offset, Pre); return;
11003
11004 case 18: store_pair_u64 (cpu, offset, Post); return;
11005 case 19: load_pair_u64 (cpu, offset, Post); return;
11006 case 20: store_pair_u64 (cpu, offset, NoWriteBack); return;
11007 case 21: load_pair_u64 (cpu, offset, NoWriteBack); return;
11008 case 22: store_pair_u64 (cpu, offset, Pre); return;
11009 case 23: load_pair_u64 (cpu, offset, Pre); return;
11010
11011 default:
11012 HALT_UNALLOC;
11013 }
11014 }
11015
11016 static void
11017 store_pair_float (sim_cpu *cpu, int32_t offset, WriteBack wb)
11018 {
11019 unsigned rn = INSTR (14, 10);
11020 unsigned rd = INSTR (9, 5);
11021 unsigned rm = INSTR (4, 0);
11022 uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK);
11023
11024 offset <<= 2;
11025
11026 if (wb != Post)
11027 address += offset;
11028
11029 aarch64_set_mem_u32 (cpu, address, aarch64_get_vec_u32 (cpu, rm, 0));
11030 aarch64_set_mem_u32 (cpu, address + 4, aarch64_get_vec_u32 (cpu, rn, 0));
11031
11032 if (wb == Post)
11033 address += offset;
11034
11035 if (wb != NoWriteBack)
11036 aarch64_set_reg_u64 (cpu, rd, SP_OK, address);
11037 }
11038
11039 static void
11040 store_pair_double (sim_cpu *cpu, int32_t offset, WriteBack wb)
11041 {
11042 unsigned rn = INSTR (14, 10);
11043 unsigned rd = INSTR (9, 5);
11044 unsigned rm = INSTR (4, 0);
11045 uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK);
11046
11047 offset <<= 3;
11048
11049 if (wb != Post)
11050 address += offset;
11051
11052 aarch64_set_mem_u64 (cpu, address, aarch64_get_vec_u64 (cpu, rm, 0));
11053 aarch64_set_mem_u64 (cpu, address + 8, aarch64_get_vec_u64 (cpu, rn, 0));
11054
11055 if (wb == Post)
11056 address += offset;
11057
11058 if (wb != NoWriteBack)
11059 aarch64_set_reg_u64 (cpu, rd, SP_OK, address);
11060 }
11061
11062 static void
11063 store_pair_long_double (sim_cpu *cpu, int32_t offset, WriteBack wb)
11064 {
11065 FRegister a;
11066 unsigned rn = INSTR (14, 10);
11067 unsigned rd = INSTR (9, 5);
11068 unsigned rm = INSTR (4, 0);
11069 uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK);
11070
11071 offset <<= 4;
11072
11073 if (wb != Post)
11074 address += offset;
11075
11076 aarch64_get_FP_long_double (cpu, rm, & a);
11077 aarch64_set_mem_long_double (cpu, address, a);
11078 aarch64_get_FP_long_double (cpu, rn, & a);
11079 aarch64_set_mem_long_double (cpu, address + 16, a);
11080
11081 if (wb == Post)
11082 address += offset;
11083
11084 if (wb != NoWriteBack)
11085 aarch64_set_reg_u64 (cpu, rd, SP_OK, address);
11086 }
11087
11088 static void
11089 load_pair_float (sim_cpu *cpu, int32_t offset, WriteBack wb)
11090 {
11091 unsigned rn = INSTR (14, 10);
11092 unsigned rd = INSTR (9, 5);
11093 unsigned rm = INSTR (4, 0);
11094 uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK);
11095
11096 if (rm == rn)
11097 HALT_UNALLOC;
11098
11099 offset <<= 2;
11100
11101 if (wb != Post)
11102 address += offset;
11103
11104 aarch64_set_vec_u32 (cpu, rm, 0, aarch64_get_mem_u32 (cpu, address));
11105 aarch64_set_vec_u32 (cpu, rn, 0, aarch64_get_mem_u32 (cpu, address + 4));
11106
11107 if (wb == Post)
11108 address += offset;
11109
11110 if (wb != NoWriteBack)
11111 aarch64_set_reg_u64 (cpu, rd, SP_OK, address);
11112 }
11113
11114 static void
11115 load_pair_double (sim_cpu *cpu, int32_t offset, WriteBack wb)
11116 {
11117 unsigned rn = INSTR (14, 10);
11118 unsigned rd = INSTR (9, 5);
11119 unsigned rm = INSTR (4, 0);
11120 uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK);
11121
11122 if (rm == rn)
11123 HALT_UNALLOC;
11124
11125 offset <<= 3;
11126
11127 if (wb != Post)
11128 address += offset;
11129
11130 aarch64_set_vec_u64 (cpu, rm, 0, aarch64_get_mem_u64 (cpu, address));
11131 aarch64_set_vec_u64 (cpu, rn, 0, aarch64_get_mem_u64 (cpu, address + 8));
11132
11133 if (wb == Post)
11134 address += offset;
11135
11136 if (wb != NoWriteBack)
11137 aarch64_set_reg_u64 (cpu, rd, SP_OK, address);
11138 }
11139
11140 static void
11141 load_pair_long_double (sim_cpu *cpu, int32_t offset, WriteBack wb)
11142 {
11143 FRegister a;
11144 unsigned rn = INSTR (14, 10);
11145 unsigned rd = INSTR (9, 5);
11146 unsigned rm = INSTR (4, 0);
11147 uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK);
11148
11149 if (rm == rn)
11150 HALT_UNALLOC;
11151
11152 offset <<= 4;
11153
11154 if (wb != Post)
11155 address += offset;
11156
11157 aarch64_get_mem_long_double (cpu, address, & a);
11158 aarch64_set_FP_long_double (cpu, rm, a);
11159 aarch64_get_mem_long_double (cpu, address + 16, & a);
11160 aarch64_set_FP_long_double (cpu, rn, a);
11161
11162 if (wb == Post)
11163 address += offset;
11164
11165 if (wb != NoWriteBack)
11166 aarch64_set_reg_u64 (cpu, rd, SP_OK, address);
11167 }
11168
11169 static void
11170 dex_load_store_pair_fp (sim_cpu *cpu)
11171 {
11172 /* instr[31,30] = size (10=> 128-bit, 01=> 64-bit, 00=> 32-bit)
11173 instr[29,25] = instruction encoding
11174 instr[24,23] = addressing mode (10=> offset, 01=> post, 11=> pre)
11175 instr[22] = load/store (1=> load)
11176 instr[21,15] = signed, scaled, offset
11177 instr[14,10] = Rn
11178 instr[ 9, 5] = Rd
11179 instr[ 4, 0] = Rm */
11180
11181 uint32_t dispatch = ((INSTR (31, 30) << 3) | INSTR (24, 22));
11182 int32_t offset = simm32 (aarch64_get_instr (cpu), 21, 15);
11183
11184 switch (dispatch)
11185 {
11186 case 2: store_pair_float (cpu, offset, Post); return;
11187 case 3: load_pair_float (cpu, offset, Post); return;
11188 case 4: store_pair_float (cpu, offset, NoWriteBack); return;
11189 case 5: load_pair_float (cpu, offset, NoWriteBack); return;
11190 case 6: store_pair_float (cpu, offset, Pre); return;
11191 case 7: load_pair_float (cpu, offset, Pre); return;
11192
11193 case 10: store_pair_double (cpu, offset, Post); return;
11194 case 11: load_pair_double (cpu, offset, Post); return;
11195 case 12: store_pair_double (cpu, offset, NoWriteBack); return;
11196 case 13: load_pair_double (cpu, offset, NoWriteBack); return;
11197 case 14: store_pair_double (cpu, offset, Pre); return;
11198 case 15: load_pair_double (cpu, offset, Pre); return;
11199
11200 case 18: store_pair_long_double (cpu, offset, Post); return;
11201 case 19: load_pair_long_double (cpu, offset, Post); return;
11202 case 20: store_pair_long_double (cpu, offset, NoWriteBack); return;
11203 case 21: load_pair_long_double (cpu, offset, NoWriteBack); return;
11204 case 22: store_pair_long_double (cpu, offset, Pre); return;
11205 case 23: load_pair_long_double (cpu, offset, Pre); return;
11206
11207 default:
11208 HALT_UNALLOC;
11209 }
11210 }
11211
11212 static inline unsigned
11213 vec_reg (unsigned v, unsigned o)
11214 {
11215 return (v + o) & 0x3F;
11216 }
11217
11218 /* Load multiple N-element structures to N consecutive registers. */
11219 static void
11220 vec_load (sim_cpu *cpu, uint64_t address, unsigned N)
11221 {
11222 int all = INSTR (30, 30);
11223 unsigned size = INSTR (11, 10);
11224 unsigned vd = INSTR (4, 0);
11225 unsigned i;
11226
11227 switch (size)
11228 {
11229 case 0: /* 8-bit operations. */
11230 if (all)
11231 for (i = 0; i < (16 * N); i++)
11232 aarch64_set_vec_u8 (cpu, vec_reg (vd, i >> 4), i & 15,
11233 aarch64_get_mem_u8 (cpu, address + i));
11234 else
11235 for (i = 0; i < (8 * N); i++)
11236 aarch64_set_vec_u8 (cpu, vec_reg (vd, i >> 3), i & 7,
11237 aarch64_get_mem_u8 (cpu, address + i));
11238 return;
11239
11240 case 1: /* 16-bit operations. */
11241 if (all)
11242 for (i = 0; i < (8 * N); i++)
11243 aarch64_set_vec_u16 (cpu, vec_reg (vd, i >> 3), i & 7,
11244 aarch64_get_mem_u16 (cpu, address + i * 2));
11245 else
11246 for (i = 0; i < (4 * N); i++)
11247 aarch64_set_vec_u16 (cpu, vec_reg (vd, i >> 2), i & 3,
11248 aarch64_get_mem_u16 (cpu, address + i * 2));
11249 return;
11250
11251 case 2: /* 32-bit operations. */
11252 if (all)
11253 for (i = 0; i < (4 * N); i++)
11254 aarch64_set_vec_u32 (cpu, vec_reg (vd, i >> 2), i & 3,
11255 aarch64_get_mem_u32 (cpu, address + i * 4));
11256 else
11257 for (i = 0; i < (2 * N); i++)
11258 aarch64_set_vec_u32 (cpu, vec_reg (vd, i >> 1), i & 1,
11259 aarch64_get_mem_u32 (cpu, address + i * 4));
11260 return;
11261
11262 case 3: /* 64-bit operations. */
11263 if (all)
11264 for (i = 0; i < (2 * N); i++)
11265 aarch64_set_vec_u64 (cpu, vec_reg (vd, i >> 1), i & 1,
11266 aarch64_get_mem_u64 (cpu, address + i * 8));
11267 else
11268 for (i = 0; i < N; i++)
11269 aarch64_set_vec_u64 (cpu, vec_reg (vd, i), 0,
11270 aarch64_get_mem_u64 (cpu, address + i * 8));
11271 return;
11272 }
11273 }
11274
11275 /* LD4: load multiple 4-element to four consecutive registers. */
11276 static void
11277 LD4 (sim_cpu *cpu, uint64_t address)
11278 {
11279 vec_load (cpu, address, 4);
11280 }
11281
11282 /* LD3: load multiple 3-element structures to three consecutive registers. */
11283 static void
11284 LD3 (sim_cpu *cpu, uint64_t address)
11285 {
11286 vec_load (cpu, address, 3);
11287 }
11288
11289 /* LD2: load multiple 2-element structures to two consecutive registers. */
11290 static void
11291 LD2 (sim_cpu *cpu, uint64_t address)
11292 {
11293 vec_load (cpu, address, 2);
11294 }
11295
11296 /* Load multiple 1-element structures into one register. */
11297 static void
11298 LD1_1 (sim_cpu *cpu, uint64_t address)
11299 {
11300 int all = INSTR (30, 30);
11301 unsigned size = INSTR (11, 10);
11302 unsigned vd = INSTR (4, 0);
11303 unsigned i;
11304
11305 switch (size)
11306 {
11307 case 0:
11308 /* LD1 {Vd.16b}, addr, #16 */
11309 /* LD1 {Vd.8b}, addr, #8 */
11310 for (i = 0; i < (all ? 16 : 8); i++)
11311 aarch64_set_vec_u8 (cpu, vd, i,
11312 aarch64_get_mem_u8 (cpu, address + i));
11313 return;
11314
11315 case 1:
11316 /* LD1 {Vd.8h}, addr, #16 */
11317 /* LD1 {Vd.4h}, addr, #8 */
11318 for (i = 0; i < (all ? 8 : 4); i++)
11319 aarch64_set_vec_u16 (cpu, vd, i,
11320 aarch64_get_mem_u16 (cpu, address + i * 2));
11321 return;
11322
11323 case 2:
11324 /* LD1 {Vd.4s}, addr, #16 */
11325 /* LD1 {Vd.2s}, addr, #8 */
11326 for (i = 0; i < (all ? 4 : 2); i++)
11327 aarch64_set_vec_u32 (cpu, vd, i,
11328 aarch64_get_mem_u32 (cpu, address + i * 4));
11329 return;
11330
11331 case 3:
11332 /* LD1 {Vd.2d}, addr, #16 */
11333 /* LD1 {Vd.1d}, addr, #8 */
11334 for (i = 0; i < (all ? 2 : 1); i++)
11335 aarch64_set_vec_u64 (cpu, vd, i,
11336 aarch64_get_mem_u64 (cpu, address + i * 8));
11337 return;
11338 }
11339 }
11340
11341 /* Load multiple 1-element structures into two registers. */
11342 static void
11343 LD1_2 (sim_cpu *cpu, uint64_t address)
11344 {
11345 /* FIXME: This algorithm is *exactly* the same as the LD2 version.
11346 So why have two different instructions ? There must be something
11347 wrong somewhere. */
11348 vec_load (cpu, address, 2);
11349 }
11350
11351 /* Load multiple 1-element structures into three registers. */
11352 static void
11353 LD1_3 (sim_cpu *cpu, uint64_t address)
11354 {
11355 /* FIXME: This algorithm is *exactly* the same as the LD3 version.
11356 So why have two different instructions ? There must be something
11357 wrong somewhere. */
11358 vec_load (cpu, address, 3);
11359 }
11360
11361 /* Load multiple 1-element structures into four registers. */
11362 static void
11363 LD1_4 (sim_cpu *cpu, uint64_t address)
11364 {
11365 /* FIXME: This algorithm is *exactly* the same as the LD4 version.
11366 So why have two different instructions ? There must be something
11367 wrong somewhere. */
11368 vec_load (cpu, address, 4);
11369 }
11370
11371 /* Store multiple N-element structures to N consecutive registers. */
11372 static void
11373 vec_store (sim_cpu *cpu, uint64_t address, unsigned N)
11374 {
11375 int all = INSTR (30, 30);
11376 unsigned size = INSTR (11, 10);
11377 unsigned vd = INSTR (4, 0);
11378 unsigned i;
11379
11380 switch (size)
11381 {
11382 case 0: /* 8-bit operations. */
11383 if (all)
11384 for (i = 0; i < (16 * N); i++)
11385 aarch64_set_mem_u8
11386 (cpu, address + i,
11387 aarch64_get_vec_u8 (cpu, vec_reg (vd, i >> 4), i & 15));
11388 else
11389 for (i = 0; i < (8 * N); i++)
11390 aarch64_set_mem_u8
11391 (cpu, address + i,
11392 aarch64_get_vec_u8 (cpu, vec_reg (vd, i >> 3), i & 7));
11393 return;
11394
11395 case 1: /* 16-bit operations. */
11396 if (all)
11397 for (i = 0; i < (8 * N); i++)
11398 aarch64_set_mem_u16
11399 (cpu, address + i * 2,
11400 aarch64_get_vec_u16 (cpu, vec_reg (vd, i >> 3), i & 7));
11401 else
11402 for (i = 0; i < (4 * N); i++)
11403 aarch64_set_mem_u16
11404 (cpu, address + i * 2,
11405 aarch64_get_vec_u16 (cpu, vec_reg (vd, i >> 2), i & 3));
11406 return;
11407
11408 case 2: /* 32-bit operations. */
11409 if (all)
11410 for (i = 0; i < (4 * N); i++)
11411 aarch64_set_mem_u32
11412 (cpu, address + i * 4,
11413 aarch64_get_vec_u32 (cpu, vec_reg (vd, i >> 2), i & 3));
11414 else
11415 for (i = 0; i < (2 * N); i++)
11416 aarch64_set_mem_u32
11417 (cpu, address + i * 4,
11418 aarch64_get_vec_u32 (cpu, vec_reg (vd, i >> 1), i & 1));
11419 return;
11420
11421 case 3: /* 64-bit operations. */
11422 if (all)
11423 for (i = 0; i < (2 * N); i++)
11424 aarch64_set_mem_u64
11425 (cpu, address + i * 8,
11426 aarch64_get_vec_u64 (cpu, vec_reg (vd, i >> 1), i & 1));
11427 else
11428 for (i = 0; i < N; i++)
11429 aarch64_set_mem_u64
11430 (cpu, address + i * 8,
11431 aarch64_get_vec_u64 (cpu, vec_reg (vd, i), 0));
11432 return;
11433 }
11434 }
11435
11436 /* Store multiple 4-element structure to four consecutive registers. */
11437 static void
11438 ST4 (sim_cpu *cpu, uint64_t address)
11439 {
11440 vec_store (cpu, address, 4);
11441 }
11442
11443 /* Store multiple 3-element structures to three consecutive registers. */
11444 static void
11445 ST3 (sim_cpu *cpu, uint64_t address)
11446 {
11447 vec_store (cpu, address, 3);
11448 }
11449
11450 /* Store multiple 2-element structures to two consecutive registers. */
11451 static void
11452 ST2 (sim_cpu *cpu, uint64_t address)
11453 {
11454 vec_store (cpu, address, 2);
11455 }
11456
11457 /* Store multiple 1-element structures into one register. */
11458 static void
11459 ST1_1 (sim_cpu *cpu, uint64_t address)
11460 {
11461 int all = INSTR (30, 30);
11462 unsigned size = INSTR (11, 10);
11463 unsigned vd = INSTR (4, 0);
11464 unsigned i;
11465
11466 switch (size)
11467 {
11468 case 0:
11469 for (i = 0; i < (all ? 16 : 8); i++)
11470 aarch64_set_mem_u8 (cpu, address + i,
11471 aarch64_get_vec_u8 (cpu, vd, i));
11472 return;
11473
11474 case 1:
11475 for (i = 0; i < (all ? 8 : 4); i++)
11476 aarch64_set_mem_u16 (cpu, address + i * 2,
11477 aarch64_get_vec_u16 (cpu, vd, i));
11478 return;
11479
11480 case 2:
11481 for (i = 0; i < (all ? 4 : 2); i++)
11482 aarch64_set_mem_u32 (cpu, address + i * 4,
11483 aarch64_get_vec_u32 (cpu, vd, i));
11484 return;
11485
11486 case 3:
11487 for (i = 0; i < (all ? 2 : 1); i++)
11488 aarch64_set_mem_u64 (cpu, address + i * 8,
11489 aarch64_get_vec_u64 (cpu, vd, i));
11490 return;
11491 }
11492 }
11493
11494 /* Store multiple 1-element structures into two registers. */
11495 static void
11496 ST1_2 (sim_cpu *cpu, uint64_t address)
11497 {
11498 /* FIXME: This algorithm is *exactly* the same as the ST2 version.
11499 So why have two different instructions ? There must be
11500 something wrong somewhere. */
11501 vec_store (cpu, address, 2);
11502 }
11503
11504 /* Store multiple 1-element structures into three registers. */
11505 static void
11506 ST1_3 (sim_cpu *cpu, uint64_t address)
11507 {
11508 /* FIXME: This algorithm is *exactly* the same as the ST3 version.
11509 So why have two different instructions ? There must be
11510 something wrong somewhere. */
11511 vec_store (cpu, address, 3);
11512 }
11513
11514 /* Store multiple 1-element structures into four registers. */
11515 static void
11516 ST1_4 (sim_cpu *cpu, uint64_t address)
11517 {
11518 /* FIXME: This algorithm is *exactly* the same as the ST4 version.
11519 So why have two different instructions ? There must be
11520 something wrong somewhere. */
11521 vec_store (cpu, address, 4);
11522 }
11523
11524 static void
11525 do_vec_LDnR (sim_cpu *cpu, uint64_t address)
11526 {
11527 /* instr[31] = 0
11528 instr[30] = element selector 0=>half, 1=>all elements
11529 instr[29,24] = 00 1101
11530 instr[23] = 0=>simple, 1=>post
11531 instr[22] = 1
11532 instr[21] = width: LD1R-or-LD3R (0) / LD2R-or-LD4R (1)
11533 instr[20,16] = 0 0000 (simple), Vinc (reg-post-inc, no SP),
11534 11111 (immediate post inc)
11535 instr[15,14] = 11
11536 instr[13] = width: LD1R-or-LD2R (0) / LD3R-or-LD4R (1)
11537 instr[12] = 0
11538 instr[11,10] = element size 00=> byte(b), 01=> half(h),
11539 10=> word(s), 11=> double(d)
11540 instr[9,5] = address
11541 instr[4,0] = Vd */
11542
11543 unsigned full = INSTR (30, 30);
11544 unsigned vd = INSTR (4, 0);
11545 unsigned size = INSTR (11, 10);
11546 int i;
11547
11548 NYI_assert (29, 24, 0x0D);
11549 NYI_assert (22, 22, 1);
11550 NYI_assert (15, 14, 3);
11551 NYI_assert (12, 12, 0);
11552
11553 switch ((INSTR (13, 13) << 1) | INSTR (21, 21))
11554 {
11555 case 0: /* LD1R. */
11556 switch (size)
11557 {
11558 case 0:
11559 {
11560 uint8_t val = aarch64_get_mem_u8 (cpu, address);
11561 for (i = 0; i < (full ? 16 : 8); i++)
11562 aarch64_set_vec_u8 (cpu, vd, i, val);
11563 break;
11564 }
11565
11566 case 1:
11567 {
11568 uint16_t val = aarch64_get_mem_u16 (cpu, address);
11569 for (i = 0; i < (full ? 8 : 4); i++)
11570 aarch64_set_vec_u16 (cpu, vd, i, val);
11571 break;
11572 }
11573
11574 case 2:
11575 {
11576 uint32_t val = aarch64_get_mem_u32 (cpu, address);
11577 for (i = 0; i < (full ? 4 : 2); i++)
11578 aarch64_set_vec_u32 (cpu, vd, i, val);
11579 break;
11580 }
11581
11582 case 3:
11583 {
11584 uint64_t val = aarch64_get_mem_u64 (cpu, address);
11585 for (i = 0; i < (full ? 2 : 1); i++)
11586 aarch64_set_vec_u64 (cpu, vd, i, val);
11587 break;
11588 }
11589
11590 default:
11591 HALT_UNALLOC;
11592 }
11593 break;
11594
11595 case 1: /* LD2R. */
11596 switch (size)
11597 {
11598 case 0:
11599 {
11600 uint8_t val1 = aarch64_get_mem_u8 (cpu, address);
11601 uint8_t val2 = aarch64_get_mem_u8 (cpu, address + 1);
11602
11603 for (i = 0; i < (full ? 16 : 8); i++)
11604 {
11605 aarch64_set_vec_u8 (cpu, vd, 0, val1);
11606 aarch64_set_vec_u8 (cpu, vd + 1, 0, val2);
11607 }
11608 break;
11609 }
11610
11611 case 1:
11612 {
11613 uint16_t val1 = aarch64_get_mem_u16 (cpu, address);
11614 uint16_t val2 = aarch64_get_mem_u16 (cpu, address + 2);
11615
11616 for (i = 0; i < (full ? 8 : 4); i++)
11617 {
11618 aarch64_set_vec_u16 (cpu, vd, 0, val1);
11619 aarch64_set_vec_u16 (cpu, vd + 1, 0, val2);
11620 }
11621 break;
11622 }
11623
11624 case 2:
11625 {
11626 uint32_t val1 = aarch64_get_mem_u32 (cpu, address);
11627 uint32_t val2 = aarch64_get_mem_u32 (cpu, address + 4);
11628
11629 for (i = 0; i < (full ? 4 : 2); i++)
11630 {
11631 aarch64_set_vec_u32 (cpu, vd, 0, val1);
11632 aarch64_set_vec_u32 (cpu, vd + 1, 0, val2);
11633 }
11634 break;
11635 }
11636
11637 case 3:
11638 {
11639 uint64_t val1 = aarch64_get_mem_u64 (cpu, address);
11640 uint64_t val2 = aarch64_get_mem_u64 (cpu, address + 8);
11641
11642 for (i = 0; i < (full ? 2 : 1); i++)
11643 {
11644 aarch64_set_vec_u64 (cpu, vd, 0, val1);
11645 aarch64_set_vec_u64 (cpu, vd + 1, 0, val2);
11646 }
11647 break;
11648 }
11649
11650 default:
11651 HALT_UNALLOC;
11652 }
11653 break;
11654
11655 case 2: /* LD3R. */
11656 switch (size)
11657 {
11658 case 0:
11659 {
11660 uint8_t val1 = aarch64_get_mem_u8 (cpu, address);
11661 uint8_t val2 = aarch64_get_mem_u8 (cpu, address + 1);
11662 uint8_t val3 = aarch64_get_mem_u8 (cpu, address + 2);
11663
11664 for (i = 0; i < (full ? 16 : 8); i++)
11665 {
11666 aarch64_set_vec_u8 (cpu, vd, 0, val1);
11667 aarch64_set_vec_u8 (cpu, vd + 1, 0, val2);
11668 aarch64_set_vec_u8 (cpu, vd + 2, 0, val3);
11669 }
11670 }
11671 break;
11672
11673 case 1:
11674 {
11675 uint32_t val1 = aarch64_get_mem_u16 (cpu, address);
11676 uint32_t val2 = aarch64_get_mem_u16 (cpu, address + 2);
11677 uint32_t val3 = aarch64_get_mem_u16 (cpu, address + 4);
11678
11679 for (i = 0; i < (full ? 8 : 4); i++)
11680 {
11681 aarch64_set_vec_u16 (cpu, vd, 0, val1);
11682 aarch64_set_vec_u16 (cpu, vd + 1, 0, val2);
11683 aarch64_set_vec_u16 (cpu, vd + 2, 0, val3);
11684 }
11685 }
11686 break;
11687
11688 case 2:
11689 {
11690 uint32_t val1 = aarch64_get_mem_u32 (cpu, address);
11691 uint32_t val2 = aarch64_get_mem_u32 (cpu, address + 4);
11692 uint32_t val3 = aarch64_get_mem_u32 (cpu, address + 8);
11693
11694 for (i = 0; i < (full ? 4 : 2); i++)
11695 {
11696 aarch64_set_vec_u32 (cpu, vd, 0, val1);
11697 aarch64_set_vec_u32 (cpu, vd + 1, 0, val2);
11698 aarch64_set_vec_u32 (cpu, vd + 2, 0, val3);
11699 }
11700 }
11701 break;
11702
11703 case 3:
11704 {
11705 uint64_t val1 = aarch64_get_mem_u64 (cpu, address);
11706 uint64_t val2 = aarch64_get_mem_u64 (cpu, address + 8);
11707 uint64_t val3 = aarch64_get_mem_u64 (cpu, address + 16);
11708
11709 for (i = 0; i < (full ? 2 : 1); i++)
11710 {
11711 aarch64_set_vec_u64 (cpu, vd, 0, val1);
11712 aarch64_set_vec_u64 (cpu, vd + 1, 0, val2);
11713 aarch64_set_vec_u64 (cpu, vd + 2, 0, val3);
11714 }
11715 }
11716 break;
11717
11718 default:
11719 HALT_UNALLOC;
11720 }
11721 break;
11722
11723 case 3: /* LD4R. */
11724 switch (size)
11725 {
11726 case 0:
11727 {
11728 uint8_t val1 = aarch64_get_mem_u8 (cpu, address);
11729 uint8_t val2 = aarch64_get_mem_u8 (cpu, address + 1);
11730 uint8_t val3 = aarch64_get_mem_u8 (cpu, address + 2);
11731 uint8_t val4 = aarch64_get_mem_u8 (cpu, address + 3);
11732
11733 for (i = 0; i < (full ? 16 : 8); i++)
11734 {
11735 aarch64_set_vec_u8 (cpu, vd, 0, val1);
11736 aarch64_set_vec_u8 (cpu, vd + 1, 0, val2);
11737 aarch64_set_vec_u8 (cpu, vd + 2, 0, val3);
11738 aarch64_set_vec_u8 (cpu, vd + 3, 0, val4);
11739 }
11740 }
11741 break;
11742
11743 case 1:
11744 {
11745 uint32_t val1 = aarch64_get_mem_u16 (cpu, address);
11746 uint32_t val2 = aarch64_get_mem_u16 (cpu, address + 2);
11747 uint32_t val3 = aarch64_get_mem_u16 (cpu, address + 4);
11748 uint32_t val4 = aarch64_get_mem_u16 (cpu, address + 6);
11749
11750 for (i = 0; i < (full ? 8 : 4); i++)
11751 {
11752 aarch64_set_vec_u16 (cpu, vd, 0, val1);
11753 aarch64_set_vec_u16 (cpu, vd + 1, 0, val2);
11754 aarch64_set_vec_u16 (cpu, vd + 2, 0, val3);
11755 aarch64_set_vec_u16 (cpu, vd + 3, 0, val4);
11756 }
11757 }
11758 break;
11759
11760 case 2:
11761 {
11762 uint32_t val1 = aarch64_get_mem_u32 (cpu, address);
11763 uint32_t val2 = aarch64_get_mem_u32 (cpu, address + 4);
11764 uint32_t val3 = aarch64_get_mem_u32 (cpu, address + 8);
11765 uint32_t val4 = aarch64_get_mem_u32 (cpu, address + 12);
11766
11767 for (i = 0; i < (full ? 4 : 2); i++)
11768 {
11769 aarch64_set_vec_u32 (cpu, vd, 0, val1);
11770 aarch64_set_vec_u32 (cpu, vd + 1, 0, val2);
11771 aarch64_set_vec_u32 (cpu, vd + 2, 0, val3);
11772 aarch64_set_vec_u32 (cpu, vd + 3, 0, val4);
11773 }
11774 }
11775 break;
11776
11777 case 3:
11778 {
11779 uint64_t val1 = aarch64_get_mem_u64 (cpu, address);
11780 uint64_t val2 = aarch64_get_mem_u64 (cpu, address + 8);
11781 uint64_t val3 = aarch64_get_mem_u64 (cpu, address + 16);
11782 uint64_t val4 = aarch64_get_mem_u64 (cpu, address + 24);
11783
11784 for (i = 0; i < (full ? 2 : 1); i++)
11785 {
11786 aarch64_set_vec_u64 (cpu, vd, 0, val1);
11787 aarch64_set_vec_u64 (cpu, vd + 1, 0, val2);
11788 aarch64_set_vec_u64 (cpu, vd + 2, 0, val3);
11789 aarch64_set_vec_u64 (cpu, vd + 3, 0, val4);
11790 }
11791 }
11792 break;
11793
11794 default:
11795 HALT_UNALLOC;
11796 }
11797 break;
11798
11799 default:
11800 HALT_UNALLOC;
11801 }
11802 }
11803
11804 static void
11805 do_vec_load_store (sim_cpu *cpu)
11806 {
11807 /* {LD|ST}<N> {Vd..Vd+N}, vaddr
11808
11809 instr[31] = 0
11810 instr[30] = element selector 0=>half, 1=>all elements
11811 instr[29,25] = 00110
11812 instr[24] = ?
11813 instr[23] = 0=>simple, 1=>post
11814 instr[22] = 0=>store, 1=>load
11815 instr[21] = 0 (LDn) / small(0)-large(1) selector (LDnR)
11816 instr[20,16] = 00000 (simple), Vinc (reg-post-inc, no SP),
11817 11111 (immediate post inc)
11818 instr[15,12] = elements and destinations. eg for load:
11819 0000=>LD4 => load multiple 4-element to
11820 four consecutive registers
11821 0100=>LD3 => load multiple 3-element to
11822 three consecutive registers
11823 1000=>LD2 => load multiple 2-element to
11824 two consecutive registers
11825 0010=>LD1 => load multiple 1-element to
11826 four consecutive registers
11827 0110=>LD1 => load multiple 1-element to
11828 three consecutive registers
11829 1010=>LD1 => load multiple 1-element to
11830 two consecutive registers
11831 0111=>LD1 => load multiple 1-element to
11832 one register
11833 1100=>LDR1,LDR2
11834 1110=>LDR3,LDR4
11835 instr[11,10] = element size 00=> byte(b), 01=> half(h),
11836 10=> word(s), 11=> double(d)
11837 instr[9,5] = Vn, can be SP
11838 instr[4,0] = Vd */
11839
11840 int post;
11841 int load;
11842 unsigned vn;
11843 uint64_t address;
11844 int type;
11845
11846 if (INSTR (31, 31) != 0 || INSTR (29, 25) != 0x06)
11847 HALT_NYI;
11848
11849 type = INSTR (15, 12);
11850 if (type != 0xE && type != 0xE && INSTR (21, 21) != 0)
11851 HALT_NYI;
11852
11853 post = INSTR (23, 23);
11854 load = INSTR (22, 22);
11855 vn = INSTR (9, 5);
11856 address = aarch64_get_reg_u64 (cpu, vn, SP_OK);
11857
11858 if (post)
11859 {
11860 unsigned vm = INSTR (20, 16);
11861
11862 if (vm == R31)
11863 {
11864 unsigned sizeof_operation;
11865
11866 switch (type)
11867 {
11868 case 0: sizeof_operation = 32; break;
11869 case 4: sizeof_operation = 24; break;
11870 case 8: sizeof_operation = 16; break;
11871
11872 case 0xC:
11873 sizeof_operation = INSTR (21, 21) ? 2 : 1;
11874 sizeof_operation <<= INSTR (11, 10);
11875 break;
11876
11877 case 0xE:
11878 sizeof_operation = INSTR (21, 21) ? 8 : 4;
11879 sizeof_operation <<= INSTR (11, 10);
11880 break;
11881
11882 case 7:
11883 /* One register, immediate offset variant. */
11884 sizeof_operation = 8;
11885 break;
11886
11887 case 10:
11888 /* Two registers, immediate offset variant. */
11889 sizeof_operation = 16;
11890 break;
11891
11892 case 6:
11893 /* Three registers, immediate offset variant. */
11894 sizeof_operation = 24;
11895 break;
11896
11897 case 2:
11898 /* Four registers, immediate offset variant. */
11899 sizeof_operation = 32;
11900 break;
11901
11902 default:
11903 HALT_UNALLOC;
11904 }
11905
11906 if (INSTR (30, 30))
11907 sizeof_operation *= 2;
11908
11909 aarch64_set_reg_u64 (cpu, vn, SP_OK, address + sizeof_operation);
11910 }
11911 else
11912 aarch64_set_reg_u64 (cpu, vn, SP_OK,
11913 address + aarch64_get_reg_u64 (cpu, vm, NO_SP));
11914 }
11915 else
11916 {
11917 NYI_assert (20, 16, 0);
11918 }
11919
11920 if (load)
11921 {
11922 switch (type)
11923 {
11924 case 0: LD4 (cpu, address); return;
11925 case 4: LD3 (cpu, address); return;
11926 case 8: LD2 (cpu, address); return;
11927 case 2: LD1_4 (cpu, address); return;
11928 case 6: LD1_3 (cpu, address); return;
11929 case 10: LD1_2 (cpu, address); return;
11930 case 7: LD1_1 (cpu, address); return;
11931
11932 case 0xE:
11933 case 0xC: do_vec_LDnR (cpu, address); return;
11934
11935 default:
11936 HALT_NYI;
11937 }
11938 }
11939
11940 /* Stores. */
11941 switch (type)
11942 {
11943 case 0: ST4 (cpu, address); return;
11944 case 4: ST3 (cpu, address); return;
11945 case 8: ST2 (cpu, address); return;
11946 case 2: ST1_4 (cpu, address); return;
11947 case 6: ST1_3 (cpu, address); return;
11948 case 10: ST1_2 (cpu, address); return;
11949 case 7: ST1_1 (cpu, address); return;
11950 default:
11951 HALT_NYI;
11952 }
11953 }
11954
11955 static void
11956 dexLdSt (sim_cpu *cpu)
11957 {
11958 /* uint32_t group = dispatchGroup (aarch64_get_instr (cpu));
11959 assert group == GROUP_LDST_0100 || group == GROUP_LDST_0110 ||
11960 group == GROUP_LDST_1100 || group == GROUP_LDST_1110
11961 bits [29,28:26] of a LS are the secondary dispatch vector. */
11962 uint32_t group2 = dispatchLS (aarch64_get_instr (cpu));
11963
11964 switch (group2)
11965 {
11966 case LS_EXCL_000:
11967 dexLoadExclusive (cpu); return;
11968
11969 case LS_LIT_010:
11970 case LS_LIT_011:
11971 dexLoadLiteral (cpu); return;
11972
11973 case LS_OTHER_110:
11974 case LS_OTHER_111:
11975 dexLoadOther (cpu); return;
11976
11977 case LS_ADVSIMD_001:
11978 do_vec_load_store (cpu); return;
11979
11980 case LS_PAIR_100:
11981 dex_load_store_pair_gr (cpu); return;
11982
11983 case LS_PAIR_101:
11984 dex_load_store_pair_fp (cpu); return;
11985
11986 default:
11987 /* Should never reach here. */
11988 HALT_NYI;
11989 }
11990 }
11991
11992 /* Specific decode and execute for group Data Processing Register. */
11993
11994 static void
11995 dexLogicalShiftedRegister (sim_cpu *cpu)
11996 {
11997 /* instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit
11998 instr[30,29] = op
11999 instr[28:24] = 01010
12000 instr[23,22] = shift : 0 ==> LSL, 1 ==> LSR, 2 ==> ASR, 3 ==> ROR
12001 instr[21] = N
12002 instr[20,16] = Rm
12003 instr[15,10] = count : must be 0xxxxx for 32 bit
12004 instr[9,5] = Rn
12005 instr[4,0] = Rd */
12006
12007 uint32_t size = INSTR (31, 31);
12008 Shift shiftType = INSTR (23, 22);
12009 uint32_t count = INSTR (15, 10);
12010
12011 /* 32 bit operations must have count[5] = 0.
12012 or else we have an UNALLOC. */
12013 if (size == 0 && uimm (count, 5, 5))
12014 HALT_UNALLOC;
12015
12016 /* Dispatch on size:op:N. */
12017 switch ((INSTR (31, 29) << 1) | INSTR (21, 21))
12018 {
12019 case 0: and32_shift (cpu, shiftType, count); return;
12020 case 1: bic32_shift (cpu, shiftType, count); return;
12021 case 2: orr32_shift (cpu, shiftType, count); return;
12022 case 3: orn32_shift (cpu, shiftType, count); return;
12023 case 4: eor32_shift (cpu, shiftType, count); return;
12024 case 5: eon32_shift (cpu, shiftType, count); return;
12025 case 6: ands32_shift (cpu, shiftType, count); return;
12026 case 7: bics32_shift (cpu, shiftType, count); return;
12027 case 8: and64_shift (cpu, shiftType, count); return;
12028 case 9: bic64_shift (cpu, shiftType, count); return;
12029 case 10:orr64_shift (cpu, shiftType, count); return;
12030 case 11:orn64_shift (cpu, shiftType, count); return;
12031 case 12:eor64_shift (cpu, shiftType, count); return;
12032 case 13:eon64_shift (cpu, shiftType, count); return;
12033 case 14:ands64_shift (cpu, shiftType, count); return;
12034 case 15:bics64_shift (cpu, shiftType, count); return;
12035 }
12036 }
12037
12038 /* 32 bit conditional select. */
12039 static void
12040 csel32 (sim_cpu *cpu, CondCode cc)
12041 {
12042 unsigned rm = INSTR (20, 16);
12043 unsigned rn = INSTR (9, 5);
12044 unsigned rd = INSTR (4, 0);
12045
12046 aarch64_set_reg_u64 (cpu, rd, NO_SP,
12047 testConditionCode (cpu, cc)
12048 ? aarch64_get_reg_u32 (cpu, rn, NO_SP)
12049 : aarch64_get_reg_u32 (cpu, rm, NO_SP));
12050 }
12051
12052 /* 64 bit conditional select. */
12053 static void
12054 csel64 (sim_cpu *cpu, CondCode cc)
12055 {
12056 unsigned rm = INSTR (20, 16);
12057 unsigned rn = INSTR (9, 5);
12058 unsigned rd = INSTR (4, 0);
12059
12060 aarch64_set_reg_u64 (cpu, rd, NO_SP,
12061 testConditionCode (cpu, cc)
12062 ? aarch64_get_reg_u64 (cpu, rn, NO_SP)
12063 : aarch64_get_reg_u64 (cpu, rm, NO_SP));
12064 }
12065
12066 /* 32 bit conditional increment. */
12067 static void
12068 csinc32 (sim_cpu *cpu, CondCode cc)
12069 {
12070 unsigned rm = INSTR (20, 16);
12071 unsigned rn = INSTR (9, 5);
12072 unsigned rd = INSTR (4, 0);
12073
12074 aarch64_set_reg_u64 (cpu, rd, NO_SP,
12075 testConditionCode (cpu, cc)
12076 ? aarch64_get_reg_u32 (cpu, rn, NO_SP)
12077 : aarch64_get_reg_u32 (cpu, rm, NO_SP) + 1);
12078 }
12079
12080 /* 64 bit conditional increment. */
12081 static void
12082 csinc64 (sim_cpu *cpu, CondCode cc)
12083 {
12084 unsigned rm = INSTR (20, 16);
12085 unsigned rn = INSTR (9, 5);
12086 unsigned rd = INSTR (4, 0);
12087
12088 aarch64_set_reg_u64 (cpu, rd, NO_SP,
12089 testConditionCode (cpu, cc)
12090 ? aarch64_get_reg_u64 (cpu, rn, NO_SP)
12091 : aarch64_get_reg_u64 (cpu, rm, NO_SP) + 1);
12092 }
12093
12094 /* 32 bit conditional invert. */
12095 static void
12096 csinv32 (sim_cpu *cpu, CondCode cc)
12097 {
12098 unsigned rm = INSTR (20, 16);
12099 unsigned rn = INSTR (9, 5);
12100 unsigned rd = INSTR (4, 0);
12101
12102 aarch64_set_reg_u64 (cpu, rd, NO_SP,
12103 testConditionCode (cpu, cc)
12104 ? aarch64_get_reg_u32 (cpu, rn, NO_SP)
12105 : ~ aarch64_get_reg_u32 (cpu, rm, NO_SP));
12106 }
12107
12108 /* 64 bit conditional invert. */
12109 static void
12110 csinv64 (sim_cpu *cpu, CondCode cc)
12111 {
12112 unsigned rm = INSTR (20, 16);
12113 unsigned rn = INSTR (9, 5);
12114 unsigned rd = INSTR (4, 0);
12115
12116 aarch64_set_reg_u64 (cpu, rd, NO_SP,
12117 testConditionCode (cpu, cc)
12118 ? aarch64_get_reg_u64 (cpu, rn, NO_SP)
12119 : ~ aarch64_get_reg_u64 (cpu, rm, NO_SP));
12120 }
12121
12122 /* 32 bit conditional negate. */
12123 static void
12124 csneg32 (sim_cpu *cpu, CondCode cc)
12125 {
12126 unsigned rm = INSTR (20, 16);
12127 unsigned rn = INSTR (9, 5);
12128 unsigned rd = INSTR (4, 0);
12129
12130 aarch64_set_reg_u64 (cpu, rd, NO_SP,
12131 testConditionCode (cpu, cc)
12132 ? aarch64_get_reg_u32 (cpu, rn, NO_SP)
12133 : - aarch64_get_reg_u32 (cpu, rm, NO_SP));
12134 }
12135
12136 /* 64 bit conditional negate. */
12137 static void
12138 csneg64 (sim_cpu *cpu, CondCode cc)
12139 {
12140 unsigned rm = INSTR (20, 16);
12141 unsigned rn = INSTR (9, 5);
12142 unsigned rd = INSTR (4, 0);
12143
12144 aarch64_set_reg_u64 (cpu, rd, NO_SP,
12145 testConditionCode (cpu, cc)
12146 ? aarch64_get_reg_u64 (cpu, rn, NO_SP)
12147 : - aarch64_get_reg_u64 (cpu, rm, NO_SP));
12148 }
12149
12150 static void
12151 dexCondSelect (sim_cpu *cpu)
12152 {
12153 /* instr[28,21] = 11011011
12154 instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit
12155 instr[30:11,10] = op : 000 ==> CSEL, 001 ==> CSINC,
12156 100 ==> CSINV, 101 ==> CSNEG,
12157 _1_ ==> UNALLOC
12158 instr[29] = S : 0 ==> ok, 1 ==> UNALLOC
12159 instr[15,12] = cond
12160 instr[29] = S : 0 ==> ok, 1 ==> UNALLOC */
12161
12162 CondCode cc = INSTR (15, 12);
12163 uint32_t S = INSTR (29, 29);
12164 uint32_t op2 = INSTR (11, 10);
12165
12166 if (S == 1)
12167 HALT_UNALLOC;
12168
12169 if (op2 & 0x2)
12170 HALT_UNALLOC;
12171
12172 switch ((INSTR (31, 30) << 1) | op2)
12173 {
12174 case 0: csel32 (cpu, cc); return;
12175 case 1: csinc32 (cpu, cc); return;
12176 case 2: csinv32 (cpu, cc); return;
12177 case 3: csneg32 (cpu, cc); return;
12178 case 4: csel64 (cpu, cc); return;
12179 case 5: csinc64 (cpu, cc); return;
12180 case 6: csinv64 (cpu, cc); return;
12181 case 7: csneg64 (cpu, cc); return;
12182 }
12183 }
12184
12185 /* Some helpers for counting leading 1 or 0 bits. */
12186
12187 /* Counts the number of leading bits which are the same
12188 in a 32 bit value in the range 1 to 32. */
12189 static uint32_t
12190 leading32 (uint32_t value)
12191 {
12192 int32_t mask= 0xffff0000;
12193 uint32_t count= 16; /* Counts number of bits set in mask. */
12194 uint32_t lo = 1; /* Lower bound for number of sign bits. */
12195 uint32_t hi = 32; /* Upper bound for number of sign bits. */
12196
12197 while (lo + 1 < hi)
12198 {
12199 int32_t test = (value & mask);
12200
12201 if (test == 0 || test == mask)
12202 {
12203 lo = count;
12204 count = (lo + hi) / 2;
12205 mask >>= (count - lo);
12206 }
12207 else
12208 {
12209 hi = count;
12210 count = (lo + hi) / 2;
12211 mask <<= hi - count;
12212 }
12213 }
12214
12215 if (lo != hi)
12216 {
12217 int32_t test;
12218
12219 mask >>= 1;
12220 test = (value & mask);
12221
12222 if (test == 0 || test == mask)
12223 count = hi;
12224 else
12225 count = lo;
12226 }
12227
12228 return count;
12229 }
12230
12231 /* Counts the number of leading bits which are the same
12232 in a 64 bit value in the range 1 to 64. */
12233 static uint64_t
12234 leading64 (uint64_t value)
12235 {
12236 int64_t mask= 0xffffffff00000000LL;
12237 uint64_t count = 32; /* Counts number of bits set in mask. */
12238 uint64_t lo = 1; /* Lower bound for number of sign bits. */
12239 uint64_t hi = 64; /* Upper bound for number of sign bits. */
12240
12241 while (lo + 1 < hi)
12242 {
12243 int64_t test = (value & mask);
12244
12245 if (test == 0 || test == mask)
12246 {
12247 lo = count;
12248 count = (lo + hi) / 2;
12249 mask >>= (count - lo);
12250 }
12251 else
12252 {
12253 hi = count;
12254 count = (lo + hi) / 2;
12255 mask <<= hi - count;
12256 }
12257 }
12258
12259 if (lo != hi)
12260 {
12261 int64_t test;
12262
12263 mask >>= 1;
12264 test = (value & mask);
12265
12266 if (test == 0 || test == mask)
12267 count = hi;
12268 else
12269 count = lo;
12270 }
12271
12272 return count;
12273 }
12274
12275 /* Bit operations. */
12276 /* N.B register args may not be SP. */
12277
12278 /* 32 bit count leading sign bits. */
12279 static void
12280 cls32 (sim_cpu *cpu)
12281 {
12282 unsigned rn = INSTR (9, 5);
12283 unsigned rd = INSTR (4, 0);
12284
12285 /* N.B. the result needs to exclude the leading bit. */
12286 aarch64_set_reg_u64
12287 (cpu, rd, NO_SP, leading32 (aarch64_get_reg_u32 (cpu, rn, NO_SP)) - 1);
12288 }
12289
12290 /* 64 bit count leading sign bits. */
12291 static void
12292 cls64 (sim_cpu *cpu)
12293 {
12294 unsigned rn = INSTR (9, 5);
12295 unsigned rd = INSTR (4, 0);
12296
12297 /* N.B. the result needs to exclude the leading bit. */
12298 aarch64_set_reg_u64
12299 (cpu, rd, NO_SP, leading64 (aarch64_get_reg_u64 (cpu, rn, NO_SP)) - 1);
12300 }
12301
12302 /* 32 bit count leading zero bits. */
12303 static void
12304 clz32 (sim_cpu *cpu)
12305 {
12306 unsigned rn = INSTR (9, 5);
12307 unsigned rd = INSTR (4, 0);
12308 uint32_t value = aarch64_get_reg_u32 (cpu, rn, NO_SP);
12309
12310 /* if the sign (top) bit is set then the count is 0. */
12311 if (pick32 (value, 31, 31))
12312 aarch64_set_reg_u64 (cpu, rd, NO_SP, 0L);
12313 else
12314 aarch64_set_reg_u64 (cpu, rd, NO_SP, leading32 (value));
12315 }
12316
12317 /* 64 bit count leading zero bits. */
12318 static void
12319 clz64 (sim_cpu *cpu)
12320 {
12321 unsigned rn = INSTR (9, 5);
12322 unsigned rd = INSTR (4, 0);
12323 uint64_t value = aarch64_get_reg_u64 (cpu, rn, NO_SP);
12324
12325 /* if the sign (top) bit is set then the count is 0. */
12326 if (pick64 (value, 63, 63))
12327 aarch64_set_reg_u64 (cpu, rd, NO_SP, 0L);
12328 else
12329 aarch64_set_reg_u64 (cpu, rd, NO_SP, leading64 (value));
12330 }
12331
12332 /* 32 bit reverse bits. */
12333 static void
12334 rbit32 (sim_cpu *cpu)
12335 {
12336 unsigned rn = INSTR (9, 5);
12337 unsigned rd = INSTR (4, 0);
12338 uint32_t value = aarch64_get_reg_u32 (cpu, rn, NO_SP);
12339 uint32_t result = 0;
12340 int i;
12341
12342 for (i = 0; i < 32; i++)
12343 {
12344 result <<= 1;
12345 result |= (value & 1);
12346 value >>= 1;
12347 }
12348 aarch64_set_reg_u64 (cpu, rd, NO_SP, result);
12349 }
12350
12351 /* 64 bit reverse bits. */
12352 static void
12353 rbit64 (sim_cpu *cpu)
12354 {
12355 unsigned rn = INSTR (9, 5);
12356 unsigned rd = INSTR (4, 0);
12357 uint64_t value = aarch64_get_reg_u64 (cpu, rn, NO_SP);
12358 uint64_t result = 0;
12359 int i;
12360
12361 for (i = 0; i < 64; i++)
12362 {
12363 result <<= 1;
12364 result |= (value & 1UL);
12365 value >>= 1;
12366 }
12367 aarch64_set_reg_u64 (cpu, rd, NO_SP, result);
12368 }
12369
12370 /* 32 bit reverse bytes. */
12371 static void
12372 rev32 (sim_cpu *cpu)
12373 {
12374 unsigned rn = INSTR (9, 5);
12375 unsigned rd = INSTR (4, 0);
12376 uint32_t value = aarch64_get_reg_u32 (cpu, rn, NO_SP);
12377 uint32_t result = 0;
12378 int i;
12379
12380 for (i = 0; i < 4; i++)
12381 {
12382 result <<= 8;
12383 result |= (value & 0xff);
12384 value >>= 8;
12385 }
12386 aarch64_set_reg_u64 (cpu, rd, NO_SP, result);
12387 }
12388
12389 /* 64 bit reverse bytes. */
12390 static void
12391 rev64 (sim_cpu *cpu)
12392 {
12393 unsigned rn = INSTR (9, 5);
12394 unsigned rd = INSTR (4, 0);
12395 uint64_t value = aarch64_get_reg_u64 (cpu, rn, NO_SP);
12396 uint64_t result = 0;
12397 int i;
12398
12399 for (i = 0; i < 8; i++)
12400 {
12401 result <<= 8;
12402 result |= (value & 0xffULL);
12403 value >>= 8;
12404 }
12405 aarch64_set_reg_u64 (cpu, rd, NO_SP, result);
12406 }
12407
12408 /* 32 bit reverse shorts. */
12409 /* N.B.this reverses the order of the bytes in each half word. */
12410 static void
12411 revh32 (sim_cpu *cpu)
12412 {
12413 unsigned rn = INSTR (9, 5);
12414 unsigned rd = INSTR (4, 0);
12415 uint32_t value = aarch64_get_reg_u32 (cpu, rn, NO_SP);
12416 uint32_t result = 0;
12417 int i;
12418
12419 for (i = 0; i < 2; i++)
12420 {
12421 result <<= 8;
12422 result |= (value & 0x00ff00ff);
12423 value >>= 8;
12424 }
12425 aarch64_set_reg_u64 (cpu, rd, NO_SP, result);
12426 }
12427
12428 /* 64 bit reverse shorts. */
12429 /* N.B.this reverses the order of the bytes in each half word. */
12430 static void
12431 revh64 (sim_cpu *cpu)
12432 {
12433 unsigned rn = INSTR (9, 5);
12434 unsigned rd = INSTR (4, 0);
12435 uint64_t value = aarch64_get_reg_u64 (cpu, rn, NO_SP);
12436 uint64_t result = 0;
12437 int i;
12438
12439 for (i = 0; i < 2; i++)
12440 {
12441 result <<= 8;
12442 result |= (value & 0x00ff00ff00ff00ffULL);
12443 value >>= 8;
12444 }
12445 aarch64_set_reg_u64 (cpu, rd, NO_SP, result);
12446 }
12447
12448 static void
12449 dexDataProc1Source (sim_cpu *cpu)
12450 {
12451 /* instr[30] = 1
12452 instr[28,21] = 111010110
12453 instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit
12454 instr[29] = S : 0 ==> ok, 1 ==> UNALLOC
12455 instr[20,16] = opcode2 : 00000 ==> ok, ow ==> UNALLOC
12456 instr[15,10] = opcode : 000000 ==> RBIT, 000001 ==> REV16,
12457 000010 ==> REV, 000011 ==> UNALLOC
12458 000100 ==> CLZ, 000101 ==> CLS
12459 ow ==> UNALLOC
12460 instr[9,5] = rn : may not be SP
12461 instr[4,0] = rd : may not be SP. */
12462
12463 uint32_t S = INSTR (29, 29);
12464 uint32_t opcode2 = INSTR (20, 16);
12465 uint32_t opcode = INSTR (15, 10);
12466 uint32_t dispatch = ((INSTR (31, 31) << 3) | opcode);
12467
12468 if (S == 1)
12469 HALT_UNALLOC;
12470
12471 if (opcode2 != 0)
12472 HALT_UNALLOC;
12473
12474 if (opcode & 0x38)
12475 HALT_UNALLOC;
12476
12477 switch (dispatch)
12478 {
12479 case 0: rbit32 (cpu); return;
12480 case 1: revh32 (cpu); return;
12481 case 2: rev32 (cpu); return;
12482 case 4: clz32 (cpu); return;
12483 case 5: cls32 (cpu); return;
12484 case 8: rbit64 (cpu); return;
12485 case 9: revh64 (cpu); return;
12486 case 10:rev32 (cpu); return;
12487 case 11:rev64 (cpu); return;
12488 case 12:clz64 (cpu); return;
12489 case 13:cls64 (cpu); return;
12490 default: HALT_UNALLOC;
12491 }
12492 }
12493
12494 /* Variable shift.
12495 Shifts by count supplied in register.
12496 N.B register args may not be SP.
12497 These all use the shifted auxiliary function for
12498 simplicity and clarity. Writing the actual shift
12499 inline would avoid a branch and so be faster but
12500 would also necessitate getting signs right. */
12501
12502 /* 32 bit arithmetic shift right. */
12503 static void
12504 asrv32 (sim_cpu *cpu)
12505 {
12506 unsigned rm = INSTR (20, 16);
12507 unsigned rn = INSTR (9, 5);
12508 unsigned rd = INSTR (4, 0);
12509
12510 aarch64_set_reg_u64
12511 (cpu, rd, NO_SP,
12512 shifted32 (aarch64_get_reg_u32 (cpu, rn, NO_SP), ASR,
12513 (aarch64_get_reg_u32 (cpu, rm, NO_SP) & 0x1f)));
12514 }
12515
12516 /* 64 bit arithmetic shift right. */
12517 static void
12518 asrv64 (sim_cpu *cpu)
12519 {
12520 unsigned rm = INSTR (20, 16);
12521 unsigned rn = INSTR (9, 5);
12522 unsigned rd = INSTR (4, 0);
12523
12524 aarch64_set_reg_u64
12525 (cpu, rd, NO_SP,
12526 shifted64 (aarch64_get_reg_u64 (cpu, rn, NO_SP), ASR,
12527 (aarch64_get_reg_u64 (cpu, rm, NO_SP) & 0x3f)));
12528 }
12529
12530 /* 32 bit logical shift left. */
12531 static void
12532 lslv32 (sim_cpu *cpu)
12533 {
12534 unsigned rm = INSTR (20, 16);
12535 unsigned rn = INSTR (9, 5);
12536 unsigned rd = INSTR (4, 0);
12537
12538 aarch64_set_reg_u64
12539 (cpu, rd, NO_SP,
12540 shifted32 (aarch64_get_reg_u32 (cpu, rn, NO_SP), LSL,
12541 (aarch64_get_reg_u32 (cpu, rm, NO_SP) & 0x1f)));
12542 }
12543
12544 /* 64 bit arithmetic shift left. */
12545 static void
12546 lslv64 (sim_cpu *cpu)
12547 {
12548 unsigned rm = INSTR (20, 16);
12549 unsigned rn = INSTR (9, 5);
12550 unsigned rd = INSTR (4, 0);
12551
12552 aarch64_set_reg_u64
12553 (cpu, rd, NO_SP,
12554 shifted64 (aarch64_get_reg_u64 (cpu, rn, NO_SP), LSL,
12555 (aarch64_get_reg_u64 (cpu, rm, NO_SP) & 0x3f)));
12556 }
12557
12558 /* 32 bit logical shift right. */
12559 static void
12560 lsrv32 (sim_cpu *cpu)
12561 {
12562 unsigned rm = INSTR (20, 16);
12563 unsigned rn = INSTR (9, 5);
12564 unsigned rd = INSTR (4, 0);
12565
12566 aarch64_set_reg_u64
12567 (cpu, rd, NO_SP,
12568 shifted32 (aarch64_get_reg_u32 (cpu, rn, NO_SP), LSR,
12569 (aarch64_get_reg_u32 (cpu, rm, NO_SP) & 0x1f)));
12570 }
12571
12572 /* 64 bit logical shift right. */
12573 static void
12574 lsrv64 (sim_cpu *cpu)
12575 {
12576 unsigned rm = INSTR (20, 16);
12577 unsigned rn = INSTR (9, 5);
12578 unsigned rd = INSTR (4, 0);
12579
12580 aarch64_set_reg_u64
12581 (cpu, rd, NO_SP,
12582 shifted64 (aarch64_get_reg_u64 (cpu, rn, NO_SP), LSR,
12583 (aarch64_get_reg_u64 (cpu, rm, NO_SP) & 0x3f)));
12584 }
12585
12586 /* 32 bit rotate right. */
12587 static void
12588 rorv32 (sim_cpu *cpu)
12589 {
12590 unsigned rm = INSTR (20, 16);
12591 unsigned rn = INSTR (9, 5);
12592 unsigned rd = INSTR (4, 0);
12593
12594 aarch64_set_reg_u64
12595 (cpu, rd, NO_SP,
12596 shifted32 (aarch64_get_reg_u32 (cpu, rn, NO_SP), ROR,
12597 (aarch64_get_reg_u32 (cpu, rm, NO_SP) & 0x1f)));
12598 }
12599
12600 /* 64 bit rotate right. */
12601 static void
12602 rorv64 (sim_cpu *cpu)
12603 {
12604 unsigned rm = INSTR (20, 16);
12605 unsigned rn = INSTR (9, 5);
12606 unsigned rd = INSTR (4, 0);
12607
12608 aarch64_set_reg_u64
12609 (cpu, rd, NO_SP,
12610 shifted64 (aarch64_get_reg_u64 (cpu, rn, NO_SP), ROR,
12611 (aarch64_get_reg_u64 (cpu, rm, NO_SP) & 0x3f)));
12612 }
12613
12614
12615 /* divide. */
12616
12617 /* 32 bit signed divide. */
12618 static void
12619 cpuiv32 (sim_cpu *cpu)
12620 {
12621 unsigned rm = INSTR (20, 16);
12622 unsigned rn = INSTR (9, 5);
12623 unsigned rd = INSTR (4, 0);
12624 /* N.B. the pseudo-code does the divide using 64 bit data. */
12625 /* TODO : check that this rounds towards zero as required. */
12626 int64_t dividend = aarch64_get_reg_s32 (cpu, rn, NO_SP);
12627 int64_t divisor = aarch64_get_reg_s32 (cpu, rm, NO_SP);
12628
12629 aarch64_set_reg_s64 (cpu, rd, NO_SP,
12630 divisor ? ((int32_t) (dividend / divisor)) : 0);
12631 }
12632
12633 /* 64 bit signed divide. */
12634 static void
12635 cpuiv64 (sim_cpu *cpu)
12636 {
12637 unsigned rm = INSTR (20, 16);
12638 unsigned rn = INSTR (9, 5);
12639 unsigned rd = INSTR (4, 0);
12640
12641 /* TODO : check that this rounds towards zero as required. */
12642 int64_t divisor = aarch64_get_reg_s64 (cpu, rm, NO_SP);
12643
12644 aarch64_set_reg_s64
12645 (cpu, rd, NO_SP,
12646 divisor ? (aarch64_get_reg_s64 (cpu, rn, NO_SP) / divisor) : 0);
12647 }
12648
12649 /* 32 bit unsigned divide. */
12650 static void
12651 udiv32 (sim_cpu *cpu)
12652 {
12653 unsigned rm = INSTR (20, 16);
12654 unsigned rn = INSTR (9, 5);
12655 unsigned rd = INSTR (4, 0);
12656
12657 /* N.B. the pseudo-code does the divide using 64 bit data. */
12658 uint64_t dividend = aarch64_get_reg_u32 (cpu, rn, NO_SP);
12659 uint64_t divisor = aarch64_get_reg_u32 (cpu, rm, NO_SP);
12660
12661 aarch64_set_reg_u64 (cpu, rd, NO_SP,
12662 divisor ? (uint32_t) (dividend / divisor) : 0);
12663 }
12664
12665 /* 64 bit unsigned divide. */
12666 static void
12667 udiv64 (sim_cpu *cpu)
12668 {
12669 unsigned rm = INSTR (20, 16);
12670 unsigned rn = INSTR (9, 5);
12671 unsigned rd = INSTR (4, 0);
12672
12673 /* TODO : check that this rounds towards zero as required. */
12674 uint64_t divisor = aarch64_get_reg_u64 (cpu, rm, NO_SP);
12675
12676 aarch64_set_reg_u64
12677 (cpu, rd, NO_SP,
12678 divisor ? (aarch64_get_reg_u64 (cpu, rn, NO_SP) / divisor) : 0);
12679 }
12680
12681 static void
12682 dexDataProc2Source (sim_cpu *cpu)
12683 {
12684 /* assert instr[30] == 0
12685 instr[28,21] == 11010110
12686 instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit
12687 instr[29] = S : 0 ==> ok, 1 ==> UNALLOC
12688 instr[15,10] = opcode : 000010 ==> UDIV, 000011 ==> CPUIV,
12689 001000 ==> LSLV, 001001 ==> LSRV
12690 001010 ==> ASRV, 001011 ==> RORV
12691 ow ==> UNALLOC. */
12692
12693 uint32_t dispatch;
12694 uint32_t S = INSTR (29, 29);
12695 uint32_t opcode = INSTR (15, 10);
12696
12697 if (S == 1)
12698 HALT_UNALLOC;
12699
12700 if (opcode & 0x34)
12701 HALT_UNALLOC;
12702
12703 dispatch = ( (INSTR (31, 31) << 3)
12704 | (uimm (opcode, 3, 3) << 2)
12705 | uimm (opcode, 1, 0));
12706 switch (dispatch)
12707 {
12708 case 2: udiv32 (cpu); return;
12709 case 3: cpuiv32 (cpu); return;
12710 case 4: lslv32 (cpu); return;
12711 case 5: lsrv32 (cpu); return;
12712 case 6: asrv32 (cpu); return;
12713 case 7: rorv32 (cpu); return;
12714 case 10: udiv64 (cpu); return;
12715 case 11: cpuiv64 (cpu); return;
12716 case 12: lslv64 (cpu); return;
12717 case 13: lsrv64 (cpu); return;
12718 case 14: asrv64 (cpu); return;
12719 case 15: rorv64 (cpu); return;
12720 default: HALT_UNALLOC;
12721 }
12722 }
12723
12724
12725 /* Multiply. */
12726
12727 /* 32 bit multiply and add. */
12728 static void
12729 madd32 (sim_cpu *cpu)
12730 {
12731 unsigned rm = INSTR (20, 16);
12732 unsigned ra = INSTR (14, 10);
12733 unsigned rn = INSTR (9, 5);
12734 unsigned rd = INSTR (4, 0);
12735
12736 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
12737 aarch64_set_reg_u64 (cpu, rd, NO_SP,
12738 aarch64_get_reg_u32 (cpu, ra, NO_SP)
12739 + aarch64_get_reg_u32 (cpu, rn, NO_SP)
12740 * aarch64_get_reg_u32 (cpu, rm, NO_SP));
12741 }
12742
12743 /* 64 bit multiply and add. */
12744 static void
12745 madd64 (sim_cpu *cpu)
12746 {
12747 unsigned rm = INSTR (20, 16);
12748 unsigned ra = INSTR (14, 10);
12749 unsigned rn = INSTR (9, 5);
12750 unsigned rd = INSTR (4, 0);
12751
12752 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
12753 aarch64_set_reg_u64 (cpu, rd, NO_SP,
12754 aarch64_get_reg_u64 (cpu, ra, NO_SP)
12755 + (aarch64_get_reg_u64 (cpu, rn, NO_SP)
12756 * aarch64_get_reg_u64 (cpu, rm, NO_SP)));
12757 }
12758
12759 /* 32 bit multiply and sub. */
12760 static void
12761 msub32 (sim_cpu *cpu)
12762 {
12763 unsigned rm = INSTR (20, 16);
12764 unsigned ra = INSTR (14, 10);
12765 unsigned rn = INSTR (9, 5);
12766 unsigned rd = INSTR (4, 0);
12767
12768 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
12769 aarch64_set_reg_u64 (cpu, rd, NO_SP,
12770 aarch64_get_reg_u32 (cpu, ra, NO_SP)
12771 - aarch64_get_reg_u32 (cpu, rn, NO_SP)
12772 * aarch64_get_reg_u32 (cpu, rm, NO_SP));
12773 }
12774
12775 /* 64 bit multiply and sub. */
12776 static void
12777 msub64 (sim_cpu *cpu)
12778 {
12779 unsigned rm = INSTR (20, 16);
12780 unsigned ra = INSTR (14, 10);
12781 unsigned rn = INSTR (9, 5);
12782 unsigned rd = INSTR (4, 0);
12783
12784 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
12785 aarch64_set_reg_u64 (cpu, rd, NO_SP,
12786 aarch64_get_reg_u64 (cpu, ra, NO_SP)
12787 - aarch64_get_reg_u64 (cpu, rn, NO_SP)
12788 * aarch64_get_reg_u64 (cpu, rm, NO_SP));
12789 }
12790
12791 /* Signed multiply add long -- source, source2 : 32 bit, source3 : 64 bit. */
12792 static void
12793 smaddl (sim_cpu *cpu)
12794 {
12795 unsigned rm = INSTR (20, 16);
12796 unsigned ra = INSTR (14, 10);
12797 unsigned rn = INSTR (9, 5);
12798 unsigned rd = INSTR (4, 0);
12799
12800 /* N.B. we need to multiply the signed 32 bit values in rn, rm to
12801 obtain a 64 bit product. */
12802 aarch64_set_reg_s64
12803 (cpu, rd, NO_SP,
12804 aarch64_get_reg_s64 (cpu, ra, NO_SP)
12805 + ((int64_t) aarch64_get_reg_s32 (cpu, rn, NO_SP))
12806 * ((int64_t) aarch64_get_reg_s32 (cpu, rm, NO_SP)));
12807 }
12808
12809 /* Signed multiply sub long -- source, source2 : 32 bit, source3 : 64 bit. */
12810 static void
12811 smsubl (sim_cpu *cpu)
12812 {
12813 unsigned rm = INSTR (20, 16);
12814 unsigned ra = INSTR (14, 10);
12815 unsigned rn = INSTR (9, 5);
12816 unsigned rd = INSTR (4, 0);
12817
12818 /* N.B. we need to multiply the signed 32 bit values in rn, rm to
12819 obtain a 64 bit product. */
12820 aarch64_set_reg_s64
12821 (cpu, rd, NO_SP,
12822 aarch64_get_reg_s64 (cpu, ra, NO_SP)
12823 - ((int64_t) aarch64_get_reg_s32 (cpu, rn, NO_SP))
12824 * ((int64_t) aarch64_get_reg_s32 (cpu, rm, NO_SP)));
12825 }
12826
12827 /* Integer Multiply/Divide. */
12828
12829 /* First some macros and a helper function. */
12830 /* Macros to test or access elements of 64 bit words. */
12831
12832 /* Mask used to access lo 32 bits of 64 bit unsigned int. */
12833 #define LOW_WORD_MASK ((1ULL << 32) - 1)
12834 /* Return the lo 32 bit word of a 64 bit unsigned int as a 64 bit unsigned int. */
12835 #define lowWordToU64(_value_u64) ((_value_u64) & LOW_WORD_MASK)
12836 /* Return the hi 32 bit word of a 64 bit unsigned int as a 64 bit unsigned int. */
12837 #define highWordToU64(_value_u64) ((_value_u64) >> 32)
12838
12839 /* Offset of sign bit in 64 bit signed integger. */
12840 #define SIGN_SHIFT_U64 63
12841 /* The sign bit itself -- also identifies the minimum negative int value. */
12842 #define SIGN_BIT_U64 (1UL << SIGN_SHIFT_U64)
12843 /* Return true if a 64 bit signed int presented as an unsigned int is the
12844 most negative value. */
12845 #define isMinimumU64(_value_u64) ((_value_u64) == SIGN_BIT_U64)
12846 /* Return true (non-zero) if a 64 bit signed int presented as an unsigned
12847 int has its sign bit set to false. */
12848 #define isSignSetU64(_value_u64) ((_value_u64) & SIGN_BIT_U64)
12849 /* Return 1L or -1L according to whether a 64 bit signed int presented as
12850 an unsigned int has its sign bit set or not. */
12851 #define signOfU64(_value_u64) (1L + (((value_u64) >> SIGN_SHIFT_U64) * -2L)
12852 /* Clear the sign bit of a 64 bit signed int presented as an unsigned int. */
12853 #define clearSignU64(_value_u64) ((_value_u64) &= ~SIGN_BIT_U64)
12854
12855 /* Multiply two 64 bit ints and return.
12856 the hi 64 bits of the 128 bit product. */
12857
12858 static uint64_t
12859 mul64hi (uint64_t value1, uint64_t value2)
12860 {
12861 uint64_t resultmid1;
12862 uint64_t result;
12863 uint64_t value1_lo = lowWordToU64 (value1);
12864 uint64_t value1_hi = highWordToU64 (value1) ;
12865 uint64_t value2_lo = lowWordToU64 (value2);
12866 uint64_t value2_hi = highWordToU64 (value2);
12867
12868 /* Cross-multiply and collect results. */
12869 uint64_t xproductlo = value1_lo * value2_lo;
12870 uint64_t xproductmid1 = value1_lo * value2_hi;
12871 uint64_t xproductmid2 = value1_hi * value2_lo;
12872 uint64_t xproducthi = value1_hi * value2_hi;
12873 uint64_t carry = 0;
12874 /* Start accumulating 64 bit results. */
12875 /* Drop bottom half of lowest cross-product. */
12876 uint64_t resultmid = xproductlo >> 32;
12877 /* Add in middle products. */
12878 resultmid = resultmid + xproductmid1;
12879
12880 /* Check for overflow. */
12881 if (resultmid < xproductmid1)
12882 /* Carry over 1 into top cross-product. */
12883 carry++;
12884
12885 resultmid1 = resultmid + xproductmid2;
12886
12887 /* Check for overflow. */
12888 if (resultmid1 < xproductmid2)
12889 /* Carry over 1 into top cross-product. */
12890 carry++;
12891
12892 /* Drop lowest 32 bits of middle cross-product. */
12893 result = resultmid1 >> 32;
12894
12895 /* Add top cross-product plus and any carry. */
12896 result += xproducthi + carry;
12897
12898 return result;
12899 }
12900
12901 /* Signed multiply high, source, source2 :
12902 64 bit, dest <-- high 64-bit of result. */
12903 static void
12904 smulh (sim_cpu *cpu)
12905 {
12906 uint64_t uresult;
12907 int64_t result;
12908 unsigned rm = INSTR (20, 16);
12909 unsigned rn = INSTR (9, 5);
12910 unsigned rd = INSTR (4, 0);
12911 GReg ra = INSTR (14, 10);
12912 int64_t value1 = aarch64_get_reg_u64 (cpu, rn, NO_SP);
12913 int64_t value2 = aarch64_get_reg_u64 (cpu, rm, NO_SP);
12914 uint64_t uvalue1;
12915 uint64_t uvalue2;
12916 int64_t signum = 1;
12917
12918 if (ra != R31)
12919 HALT_UNALLOC;
12920
12921 /* Convert to unsigned and use the unsigned mul64hi routine
12922 the fix the sign up afterwards. */
12923 if (value1 < 0)
12924 {
12925 signum *= -1L;
12926 uvalue1 = -value1;
12927 }
12928 else
12929 {
12930 uvalue1 = value1;
12931 }
12932
12933 if (value2 < 0)
12934 {
12935 signum *= -1L;
12936 uvalue2 = -value2;
12937 }
12938 else
12939 {
12940 uvalue2 = value2;
12941 }
12942
12943 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
12944 uresult = mul64hi (uvalue1, uvalue2);
12945 result = uresult;
12946 result *= signum;
12947
12948 aarch64_set_reg_s64 (cpu, rd, NO_SP, result);
12949 }
12950
12951 /* Unsigned multiply add long -- source, source2 :
12952 32 bit, source3 : 64 bit. */
12953 static void
12954 umaddl (sim_cpu *cpu)
12955 {
12956 unsigned rm = INSTR (20, 16);
12957 unsigned ra = INSTR (14, 10);
12958 unsigned rn = INSTR (9, 5);
12959 unsigned rd = INSTR (4, 0);
12960
12961 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
12962 /* N.B. we need to multiply the signed 32 bit values in rn, rm to
12963 obtain a 64 bit product. */
12964 aarch64_set_reg_u64
12965 (cpu, rd, NO_SP,
12966 aarch64_get_reg_u64 (cpu, ra, NO_SP)
12967 + ((uint64_t) aarch64_get_reg_u32 (cpu, rn, NO_SP))
12968 * ((uint64_t) aarch64_get_reg_u32 (cpu, rm, NO_SP)));
12969 }
12970
12971 /* Unsigned multiply sub long -- source, source2 : 32 bit, source3 : 64 bit. */
12972 static void
12973 umsubl (sim_cpu *cpu)
12974 {
12975 unsigned rm = INSTR (20, 16);
12976 unsigned ra = INSTR (14, 10);
12977 unsigned rn = INSTR (9, 5);
12978 unsigned rd = INSTR (4, 0);
12979
12980 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
12981 /* N.B. we need to multiply the signed 32 bit values in rn, rm to
12982 obtain a 64 bit product. */
12983 aarch64_set_reg_u64
12984 (cpu, rd, NO_SP,
12985 aarch64_get_reg_u64 (cpu, ra, NO_SP)
12986 - ((uint64_t) aarch64_get_reg_u32 (cpu, rn, NO_SP))
12987 * ((uint64_t) aarch64_get_reg_u32 (cpu, rm, NO_SP)));
12988 }
12989
12990 /* Unsigned multiply high, source, source2 :
12991 64 bit, dest <-- high 64-bit of result. */
12992 static void
12993 umulh (sim_cpu *cpu)
12994 {
12995 unsigned rm = INSTR (20, 16);
12996 unsigned rn = INSTR (9, 5);
12997 unsigned rd = INSTR (4, 0);
12998 GReg ra = INSTR (14, 10);
12999
13000 if (ra != R31)
13001 HALT_UNALLOC;
13002
13003 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13004 aarch64_set_reg_u64 (cpu, rd, NO_SP,
13005 mul64hi (aarch64_get_reg_u64 (cpu, rn, NO_SP),
13006 aarch64_get_reg_u64 (cpu, rm, NO_SP)));
13007 }
13008
13009 static void
13010 dexDataProc3Source (sim_cpu *cpu)
13011 {
13012 /* assert instr[28,24] == 11011. */
13013 /* instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit (for rd at least)
13014 instr[30,29] = op54 : 00 ==> ok, ow ==> UNALLOC
13015 instr[23,21] = op31 : 111 ==> UNALLOC, o2 ==> ok
13016 instr[15] = o0 : 0/1 ==> ok
13017 instr[23,21:15] ==> op : 0000 ==> MADD, 0001 ==> MSUB, (32/64 bit)
13018 0010 ==> SMADDL, 0011 ==> SMSUBL, (64 bit only)
13019 0100 ==> SMULH, (64 bit only)
13020 1010 ==> UMADDL, 1011 ==> UNSUBL, (64 bit only)
13021 1100 ==> UMULH (64 bit only)
13022 ow ==> UNALLOC. */
13023
13024 uint32_t dispatch;
13025 uint32_t size = INSTR (31, 31);
13026 uint32_t op54 = INSTR (30, 29);
13027 uint32_t op31 = INSTR (23, 21);
13028 uint32_t o0 = INSTR (15, 15);
13029
13030 if (op54 != 0)
13031 HALT_UNALLOC;
13032
13033 if (size == 0)
13034 {
13035 if (op31 != 0)
13036 HALT_UNALLOC;
13037
13038 if (o0 == 0)
13039 madd32 (cpu);
13040 else
13041 msub32 (cpu);
13042 return;
13043 }
13044
13045 dispatch = (op31 << 1) | o0;
13046
13047 switch (dispatch)
13048 {
13049 case 0: madd64 (cpu); return;
13050 case 1: msub64 (cpu); return;
13051 case 2: smaddl (cpu); return;
13052 case 3: smsubl (cpu); return;
13053 case 4: smulh (cpu); return;
13054 case 10: umaddl (cpu); return;
13055 case 11: umsubl (cpu); return;
13056 case 12: umulh (cpu); return;
13057 default: HALT_UNALLOC;
13058 }
13059 }
13060
13061 static void
13062 dexDPReg (sim_cpu *cpu)
13063 {
13064 /* uint32_t group = dispatchGroup (aarch64_get_instr (cpu));
13065 assert group == GROUP_DPREG_0101 || group == GROUP_DPREG_1101
13066 bits [28:24:21] of a DPReg are the secondary dispatch vector. */
13067 uint32_t group2 = dispatchDPReg (aarch64_get_instr (cpu));
13068
13069 switch (group2)
13070 {
13071 case DPREG_LOG_000:
13072 case DPREG_LOG_001:
13073 dexLogicalShiftedRegister (cpu); return;
13074
13075 case DPREG_ADDSHF_010:
13076 dexAddSubtractShiftedRegister (cpu); return;
13077
13078 case DPREG_ADDEXT_011:
13079 dexAddSubtractExtendedRegister (cpu); return;
13080
13081 case DPREG_ADDCOND_100:
13082 {
13083 /* This set bundles a variety of different operations. */
13084 /* Check for. */
13085 /* 1) add/sub w carry. */
13086 uint32_t mask1 = 0x1FE00000U;
13087 uint32_t val1 = 0x1A000000U;
13088 /* 2) cond compare register/immediate. */
13089 uint32_t mask2 = 0x1FE00000U;
13090 uint32_t val2 = 0x1A400000U;
13091 /* 3) cond select. */
13092 uint32_t mask3 = 0x1FE00000U;
13093 uint32_t val3 = 0x1A800000U;
13094 /* 4) data proc 1/2 source. */
13095 uint32_t mask4 = 0x1FE00000U;
13096 uint32_t val4 = 0x1AC00000U;
13097
13098 if ((aarch64_get_instr (cpu) & mask1) == val1)
13099 dexAddSubtractWithCarry (cpu);
13100
13101 else if ((aarch64_get_instr (cpu) & mask2) == val2)
13102 CondCompare (cpu);
13103
13104 else if ((aarch64_get_instr (cpu) & mask3) == val3)
13105 dexCondSelect (cpu);
13106
13107 else if ((aarch64_get_instr (cpu) & mask4) == val4)
13108 {
13109 /* Bit 30 is clear for data proc 2 source
13110 and set for data proc 1 source. */
13111 if (aarch64_get_instr (cpu) & (1U << 30))
13112 dexDataProc1Source (cpu);
13113 else
13114 dexDataProc2Source (cpu);
13115 }
13116
13117 else
13118 /* Should not reach here. */
13119 HALT_NYI;
13120
13121 return;
13122 }
13123
13124 case DPREG_3SRC_110:
13125 dexDataProc3Source (cpu); return;
13126
13127 case DPREG_UNALLOC_101:
13128 HALT_UNALLOC;
13129
13130 case DPREG_3SRC_111:
13131 dexDataProc3Source (cpu); return;
13132
13133 default:
13134 /* Should never reach here. */
13135 HALT_NYI;
13136 }
13137 }
13138
13139 /* Unconditional Branch immediate.
13140 Offset is a PC-relative byte offset in the range +/- 128MiB.
13141 The offset is assumed to be raw from the decode i.e. the
13142 simulator is expected to scale them from word offsets to byte. */
13143
13144 /* Unconditional branch. */
13145 static void
13146 buc (sim_cpu *cpu, int32_t offset)
13147 {
13148 aarch64_set_next_PC_by_offset (cpu, offset);
13149 }
13150
13151 static unsigned stack_depth = 0;
13152
13153 /* Unconditional branch and link -- writes return PC to LR. */
13154 static void
13155 bl (sim_cpu *cpu, int32_t offset)
13156 {
13157 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13158 aarch64_save_LR (cpu);
13159 aarch64_set_next_PC_by_offset (cpu, offset);
13160
13161 if (TRACE_BRANCH_P (cpu))
13162 {
13163 ++ stack_depth;
13164 TRACE_BRANCH (cpu,
13165 " %*scall %" PRIx64 " [%s]"
13166 " [args: %" PRIx64 " %" PRIx64 " %" PRIx64 "]",
13167 stack_depth, " ", aarch64_get_next_PC (cpu),
13168 aarch64_get_func (aarch64_get_next_PC (cpu)),
13169 aarch64_get_reg_u64 (cpu, 0, NO_SP),
13170 aarch64_get_reg_u64 (cpu, 1, NO_SP),
13171 aarch64_get_reg_u64 (cpu, 2, NO_SP)
13172 );
13173 }
13174 }
13175
13176 /* Unconditional Branch register.
13177 Branch/return address is in source register. */
13178
13179 /* Unconditional branch. */
13180 static void
13181 br (sim_cpu *cpu)
13182 {
13183 unsigned rn = INSTR (9, 5);
13184 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13185 aarch64_set_next_PC (cpu, aarch64_get_reg_u64 (cpu, rn, NO_SP));
13186 }
13187
13188 /* Unconditional branch and link -- writes return PC to LR. */
13189 static void
13190 blr (sim_cpu *cpu)
13191 {
13192 unsigned rn = INSTR (9, 5);
13193
13194 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13195 /* The pseudo code in the spec says we update LR before fetching.
13196 the value from the rn. */
13197 aarch64_save_LR (cpu);
13198 aarch64_set_next_PC (cpu, aarch64_get_reg_u64 (cpu, rn, NO_SP));
13199
13200 if (TRACE_BRANCH_P (cpu))
13201 {
13202 ++ stack_depth;
13203 TRACE_BRANCH (cpu,
13204 " %*scall %" PRIx64 " [%s]"
13205 " [args: %" PRIx64 " %" PRIx64 " %" PRIx64 "]",
13206 stack_depth, " ", aarch64_get_next_PC (cpu),
13207 aarch64_get_func (aarch64_get_next_PC (cpu)),
13208 aarch64_get_reg_u64 (cpu, 0, NO_SP),
13209 aarch64_get_reg_u64 (cpu, 1, NO_SP),
13210 aarch64_get_reg_u64 (cpu, 2, NO_SP)
13211 );
13212 }
13213 }
13214
13215 /* Return -- assembler will default source to LR this is functionally
13216 equivalent to br but, presumably, unlike br it side effects the
13217 branch predictor. */
13218 static void
13219 ret (sim_cpu *cpu)
13220 {
13221 unsigned rn = INSTR (9, 5);
13222 aarch64_set_next_PC (cpu, aarch64_get_reg_u64 (cpu, rn, NO_SP));
13223
13224 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13225 if (TRACE_BRANCH_P (cpu))
13226 {
13227 TRACE_BRANCH (cpu,
13228 " %*sreturn [result: %" PRIx64 "]",
13229 stack_depth, " ", aarch64_get_reg_u64 (cpu, 0, NO_SP));
13230 -- stack_depth;
13231 }
13232 }
13233
13234 /* NOP -- we implement this and call it from the decode in case we
13235 want to intercept it later. */
13236
13237 static void
13238 nop (sim_cpu *cpu)
13239 {
13240 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13241 }
13242
13243 /* Data synchronization barrier. */
13244
13245 static void
13246 dsb (sim_cpu *cpu)
13247 {
13248 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13249 }
13250
13251 /* Data memory barrier. */
13252
13253 static void
13254 dmb (sim_cpu *cpu)
13255 {
13256 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13257 }
13258
13259 /* Instruction synchronization barrier. */
13260
13261 static void
13262 isb (sim_cpu *cpu)
13263 {
13264 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13265 }
13266
13267 static void
13268 dexBranchImmediate (sim_cpu *cpu)
13269 {
13270 /* assert instr[30,26] == 00101
13271 instr[31] ==> 0 == B, 1 == BL
13272 instr[25,0] == imm26 branch offset counted in words. */
13273
13274 uint32_t top = INSTR (31, 31);
13275 /* We have a 26 byte signed word offset which we need to pass to the
13276 execute routine as a signed byte offset. */
13277 int32_t offset = simm32 (aarch64_get_instr (cpu), 25, 0) << 2;
13278
13279 if (top)
13280 bl (cpu, offset);
13281 else
13282 buc (cpu, offset);
13283 }
13284
13285 /* Control Flow. */
13286
13287 /* Conditional branch
13288
13289 Offset is a PC-relative byte offset in the range +/- 1MiB pos is
13290 a bit position in the range 0 .. 63
13291
13292 cc is a CondCode enum value as pulled out of the decode
13293
13294 N.B. any offset register (source) can only be Xn or Wn. */
13295
13296 static void
13297 bcc (sim_cpu *cpu, int32_t offset, CondCode cc)
13298 {
13299 /* The test returns TRUE if CC is met. */
13300 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13301 if (testConditionCode (cpu, cc))
13302 aarch64_set_next_PC_by_offset (cpu, offset);
13303 }
13304
13305 /* 32 bit branch on register non-zero. */
13306 static void
13307 cbnz32 (sim_cpu *cpu, int32_t offset)
13308 {
13309 unsigned rt = INSTR (4, 0);
13310
13311 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13312 if (aarch64_get_reg_u32 (cpu, rt, NO_SP) != 0)
13313 aarch64_set_next_PC_by_offset (cpu, offset);
13314 }
13315
13316 /* 64 bit branch on register zero. */
13317 static void
13318 cbnz (sim_cpu *cpu, int32_t offset)
13319 {
13320 unsigned rt = INSTR (4, 0);
13321
13322 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13323 if (aarch64_get_reg_u64 (cpu, rt, NO_SP) != 0)
13324 aarch64_set_next_PC_by_offset (cpu, offset);
13325 }
13326
13327 /* 32 bit branch on register non-zero. */
13328 static void
13329 cbz32 (sim_cpu *cpu, int32_t offset)
13330 {
13331 unsigned rt = INSTR (4, 0);
13332
13333 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13334 if (aarch64_get_reg_u32 (cpu, rt, NO_SP) == 0)
13335 aarch64_set_next_PC_by_offset (cpu, offset);
13336 }
13337
13338 /* 64 bit branch on register zero. */
13339 static void
13340 cbz (sim_cpu *cpu, int32_t offset)
13341 {
13342 unsigned rt = INSTR (4, 0);
13343
13344 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13345 if (aarch64_get_reg_u64 (cpu, rt, NO_SP) == 0)
13346 aarch64_set_next_PC_by_offset (cpu, offset);
13347 }
13348
13349 /* Branch on register bit test non-zero -- one size fits all. */
13350 static void
13351 tbnz (sim_cpu *cpu, uint32_t pos, int32_t offset)
13352 {
13353 unsigned rt = INSTR (4, 0);
13354
13355 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13356 if (aarch64_get_reg_u64 (cpu, rt, NO_SP) & (1 << pos))
13357 aarch64_set_next_PC_by_offset (cpu, offset);
13358 }
13359
13360 /* Branch on register bit test zero -- one size fits all. */
13361 static void
13362 tbz (sim_cpu *cpu, uint32_t pos, int32_t offset)
13363 {
13364 unsigned rt = INSTR (4, 0);
13365
13366 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13367 if (!(aarch64_get_reg_u64 (cpu, rt, NO_SP) & (1 << pos)))
13368 aarch64_set_next_PC_by_offset (cpu, offset);
13369 }
13370
13371 static void
13372 dexCompareBranchImmediate (sim_cpu *cpu)
13373 {
13374 /* instr[30,25] = 01 1010
13375 instr[31] = size : 0 ==> 32, 1 ==> 64
13376 instr[24] = op : 0 ==> CBZ, 1 ==> CBNZ
13377 instr[23,5] = simm19 branch offset counted in words
13378 instr[4,0] = rt */
13379
13380 uint32_t size = INSTR (31, 31);
13381 uint32_t op = INSTR (24, 24);
13382 int32_t offset = simm32 (aarch64_get_instr (cpu), 23, 5) << 2;
13383
13384 if (size == 0)
13385 {
13386 if (op == 0)
13387 cbz32 (cpu, offset);
13388 else
13389 cbnz32 (cpu, offset);
13390 }
13391 else
13392 {
13393 if (op == 0)
13394 cbz (cpu, offset);
13395 else
13396 cbnz (cpu, offset);
13397 }
13398 }
13399
13400 static void
13401 dexTestBranchImmediate (sim_cpu *cpu)
13402 {
13403 /* instr[31] = b5 : bit 5 of test bit idx
13404 instr[30,25] = 01 1011
13405 instr[24] = op : 0 ==> TBZ, 1 == TBNZ
13406 instr[23,19] = b40 : bits 4 to 0 of test bit idx
13407 instr[18,5] = simm14 : signed offset counted in words
13408 instr[4,0] = uimm5 */
13409
13410 uint32_t pos = ((INSTR (31, 31) << 4) | INSTR (23, 19));
13411 int32_t offset = simm32 (aarch64_get_instr (cpu), 18, 5) << 2;
13412
13413 NYI_assert (30, 25, 0x1b);
13414
13415 if (INSTR (24, 24) == 0)
13416 tbz (cpu, pos, offset);
13417 else
13418 tbnz (cpu, pos, offset);
13419 }
13420
13421 static void
13422 dexCondBranchImmediate (sim_cpu *cpu)
13423 {
13424 /* instr[31,25] = 010 1010
13425 instr[24] = op1; op => 00 ==> B.cond
13426 instr[23,5] = simm19 : signed offset counted in words
13427 instr[4] = op0
13428 instr[3,0] = cond */
13429
13430 int32_t offset;
13431 uint32_t op = ((INSTR (24, 24) << 1) | INSTR (4, 4));
13432
13433 NYI_assert (31, 25, 0x2a);
13434
13435 if (op != 0)
13436 HALT_UNALLOC;
13437
13438 offset = simm32 (aarch64_get_instr (cpu), 23, 5) << 2;
13439
13440 bcc (cpu, offset, INSTR (3, 0));
13441 }
13442
13443 static void
13444 dexBranchRegister (sim_cpu *cpu)
13445 {
13446 /* instr[31,25] = 110 1011
13447 instr[24,21] = op : 0 ==> BR, 1 => BLR, 2 => RET, 3 => ERET, 4 => DRPS
13448 instr[20,16] = op2 : must be 11111
13449 instr[15,10] = op3 : must be 000000
13450 instr[4,0] = op2 : must be 11111. */
13451
13452 uint32_t op = INSTR (24, 21);
13453 uint32_t op2 = INSTR (20, 16);
13454 uint32_t op3 = INSTR (15, 10);
13455 uint32_t op4 = INSTR (4, 0);
13456
13457 NYI_assert (31, 25, 0x6b);
13458
13459 if (op2 != 0x1F || op3 != 0 || op4 != 0)
13460 HALT_UNALLOC;
13461
13462 if (op == 0)
13463 br (cpu);
13464
13465 else if (op == 1)
13466 blr (cpu);
13467
13468 else if (op == 2)
13469 ret (cpu);
13470
13471 else
13472 {
13473 /* ERET and DRPS accept 0b11111 for rn = instr [4,0]. */
13474 /* anything else is unallocated. */
13475 uint32_t rn = INSTR (4, 0);
13476
13477 if (rn != 0x1f)
13478 HALT_UNALLOC;
13479
13480 if (op == 4 || op == 5)
13481 HALT_NYI;
13482
13483 HALT_UNALLOC;
13484 }
13485 }
13486
13487 /* FIXME: We should get the Angel SWI values from ../../libgloss/aarch64/svc.h
13488 but this may not be available. So instead we define the values we need
13489 here. */
13490 #define AngelSVC_Reason_Open 0x01
13491 #define AngelSVC_Reason_Close 0x02
13492 #define AngelSVC_Reason_Write 0x05
13493 #define AngelSVC_Reason_Read 0x06
13494 #define AngelSVC_Reason_IsTTY 0x09
13495 #define AngelSVC_Reason_Seek 0x0A
13496 #define AngelSVC_Reason_FLen 0x0C
13497 #define AngelSVC_Reason_Remove 0x0E
13498 #define AngelSVC_Reason_Rename 0x0F
13499 #define AngelSVC_Reason_Clock 0x10
13500 #define AngelSVC_Reason_Time 0x11
13501 #define AngelSVC_Reason_System 0x12
13502 #define AngelSVC_Reason_Errno 0x13
13503 #define AngelSVC_Reason_GetCmdLine 0x15
13504 #define AngelSVC_Reason_HeapInfo 0x16
13505 #define AngelSVC_Reason_ReportException 0x18
13506 #define AngelSVC_Reason_Elapsed 0x30
13507
13508
13509 static void
13510 handle_halt (sim_cpu *cpu, uint32_t val)
13511 {
13512 uint64_t result = 0;
13513
13514 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13515 if (val != 0xf000)
13516 {
13517 TRACE_SYSCALL (cpu, " HLT [0x%x]", val);
13518 sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu),
13519 sim_stopped, SIM_SIGTRAP);
13520 }
13521
13522 /* We have encountered an Angel SVC call. See if we can process it. */
13523 switch (aarch64_get_reg_u32 (cpu, 0, NO_SP))
13524 {
13525 case AngelSVC_Reason_HeapInfo:
13526 {
13527 /* Get the values. */
13528 uint64_t stack_top = aarch64_get_stack_start (cpu);
13529 uint64_t heap_base = aarch64_get_heap_start (cpu);
13530
13531 /* Get the pointer */
13532 uint64_t ptr = aarch64_get_reg_u64 (cpu, 1, SP_OK);
13533 ptr = aarch64_get_mem_u64 (cpu, ptr);
13534
13535 /* Fill in the memory block. */
13536 /* Start addr of heap. */
13537 aarch64_set_mem_u64 (cpu, ptr + 0, heap_base);
13538 /* End addr of heap. */
13539 aarch64_set_mem_u64 (cpu, ptr + 8, stack_top);
13540 /* Lowest stack addr. */
13541 aarch64_set_mem_u64 (cpu, ptr + 16, heap_base);
13542 /* Initial stack addr. */
13543 aarch64_set_mem_u64 (cpu, ptr + 24, stack_top);
13544
13545 TRACE_SYSCALL (cpu, " AngelSVC: Get Heap Info");
13546 }
13547 break;
13548
13549 case AngelSVC_Reason_Open:
13550 {
13551 /* Get the pointer */
13552 /* uint64_t ptr = aarch64_get_reg_u64 (cpu, 1, SP_OK);. */
13553 /* FIXME: For now we just assume that we will only be asked
13554 to open the standard file descriptors. */
13555 static int fd = 0;
13556 result = fd ++;
13557
13558 TRACE_SYSCALL (cpu, " AngelSVC: Open file %d", fd - 1);
13559 }
13560 break;
13561
13562 case AngelSVC_Reason_Close:
13563 {
13564 uint64_t fh = aarch64_get_reg_u64 (cpu, 1, SP_OK);
13565 TRACE_SYSCALL (cpu, " AngelSVC: Close file %d", (int) fh);
13566 result = 0;
13567 }
13568 break;
13569
13570 case AngelSVC_Reason_Errno:
13571 result = 0;
13572 TRACE_SYSCALL (cpu, " AngelSVC: Get Errno");
13573 break;
13574
13575 case AngelSVC_Reason_Clock:
13576 result =
13577 #ifdef CLOCKS_PER_SEC
13578 (CLOCKS_PER_SEC >= 100)
13579 ? (clock () / (CLOCKS_PER_SEC / 100))
13580 : ((clock () * 100) / CLOCKS_PER_SEC)
13581 #else
13582 /* Presume unix... clock() returns microseconds. */
13583 (clock () / 10000)
13584 #endif
13585 ;
13586 TRACE_SYSCALL (cpu, " AngelSVC: Get Clock");
13587 break;
13588
13589 case AngelSVC_Reason_GetCmdLine:
13590 {
13591 /* Get the pointer */
13592 uint64_t ptr = aarch64_get_reg_u64 (cpu, 1, SP_OK);
13593 ptr = aarch64_get_mem_u64 (cpu, ptr);
13594
13595 /* FIXME: No command line for now. */
13596 aarch64_set_mem_u64 (cpu, ptr, 0);
13597 TRACE_SYSCALL (cpu, " AngelSVC: Get Command Line");
13598 }
13599 break;
13600
13601 case AngelSVC_Reason_IsTTY:
13602 result = 1;
13603 TRACE_SYSCALL (cpu, " AngelSVC: IsTTY ?");
13604 break;
13605
13606 case AngelSVC_Reason_Write:
13607 {
13608 /* Get the pointer */
13609 uint64_t ptr = aarch64_get_reg_u64 (cpu, 1, SP_OK);
13610 /* Get the write control block. */
13611 uint64_t fd = aarch64_get_mem_u64 (cpu, ptr);
13612 uint64_t buf = aarch64_get_mem_u64 (cpu, ptr + 8);
13613 uint64_t len = aarch64_get_mem_u64 (cpu, ptr + 16);
13614
13615 TRACE_SYSCALL (cpu, "write of %" PRIx64 " bytes from %"
13616 PRIx64 " on descriptor %" PRIx64,
13617 len, buf, fd);
13618
13619 if (len > 1280)
13620 {
13621 TRACE_SYSCALL (cpu,
13622 " AngelSVC: Write: Suspiciously long write: %ld",
13623 (long) len);
13624 sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu),
13625 sim_stopped, SIM_SIGBUS);
13626 }
13627 else if (fd == 1)
13628 {
13629 printf ("%.*s", (int) len, aarch64_get_mem_ptr (cpu, buf));
13630 }
13631 else if (fd == 2)
13632 {
13633 TRACE (cpu, 0, "\n");
13634 sim_io_eprintf (CPU_STATE (cpu), "%.*s",
13635 (int) len, aarch64_get_mem_ptr (cpu, buf));
13636 TRACE (cpu, 0, "\n");
13637 }
13638 else
13639 {
13640 TRACE_SYSCALL (cpu,
13641 " AngelSVC: Write: Unexpected file handle: %d",
13642 (int) fd);
13643 sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu),
13644 sim_stopped, SIM_SIGABRT);
13645 }
13646 }
13647 break;
13648
13649 case AngelSVC_Reason_ReportException:
13650 {
13651 /* Get the pointer */
13652 uint64_t ptr = aarch64_get_reg_u64 (cpu, 1, SP_OK);
13653 /*ptr = aarch64_get_mem_u64 (cpu, ptr);. */
13654 uint64_t type = aarch64_get_mem_u64 (cpu, ptr);
13655 uint64_t state = aarch64_get_mem_u64 (cpu, ptr + 8);
13656
13657 TRACE_SYSCALL (cpu,
13658 "Angel Exception: type 0x%" PRIx64 " state %" PRIx64,
13659 type, state);
13660
13661 if (type == 0x20026)
13662 sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu),
13663 sim_exited, state);
13664 else
13665 sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu),
13666 sim_stopped, SIM_SIGINT);
13667 }
13668 break;
13669
13670 case AngelSVC_Reason_Read:
13671 case AngelSVC_Reason_FLen:
13672 case AngelSVC_Reason_Seek:
13673 case AngelSVC_Reason_Remove:
13674 case AngelSVC_Reason_Time:
13675 case AngelSVC_Reason_System:
13676 case AngelSVC_Reason_Rename:
13677 case AngelSVC_Reason_Elapsed:
13678 default:
13679 TRACE_SYSCALL (cpu, " HLT [Unknown angel %x]",
13680 aarch64_get_reg_u32 (cpu, 0, NO_SP));
13681 sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu),
13682 sim_stopped, SIM_SIGTRAP);
13683 }
13684
13685 aarch64_set_reg_u64 (cpu, 0, NO_SP, result);
13686 }
13687
13688 static void
13689 dexExcpnGen (sim_cpu *cpu)
13690 {
13691 /* instr[31:24] = 11010100
13692 instr[23,21] = opc : 000 ==> GEN EXCPN, 001 ==> BRK
13693 010 ==> HLT, 101 ==> DBG GEN EXCPN
13694 instr[20,5] = imm16
13695 instr[4,2] = opc2 000 ==> OK, ow ==> UNALLOC
13696 instr[1,0] = LL : discriminates opc */
13697
13698 uint32_t opc = INSTR (23, 21);
13699 uint32_t imm16 = INSTR (20, 5);
13700 uint32_t opc2 = INSTR (4, 2);
13701 uint32_t LL;
13702
13703 NYI_assert (31, 24, 0xd4);
13704
13705 if (opc2 != 0)
13706 HALT_UNALLOC;
13707
13708 LL = INSTR (1, 0);
13709
13710 /* We only implement HLT and BRK for now. */
13711 if (opc == 1 && LL == 0)
13712 {
13713 TRACE_EVENTS (cpu, " BRK [0x%x]", imm16);
13714 sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu),
13715 sim_exited, aarch64_get_reg_s32 (cpu, R0, SP_OK));
13716 }
13717
13718 if (opc == 2 && LL == 0)
13719 handle_halt (cpu, imm16);
13720
13721 else if (opc == 0 || opc == 5)
13722 HALT_NYI;
13723
13724 else
13725 HALT_UNALLOC;
13726 }
13727
13728 /* Stub for accessing system registers. */
13729
13730 static uint64_t
13731 system_get (sim_cpu *cpu, unsigned op0, unsigned op1, unsigned crn,
13732 unsigned crm, unsigned op2)
13733 {
13734 if (crn == 0 && op1 == 3 && crm == 0 && op2 == 7)
13735 /* DCZID_EL0 - the Data Cache Zero ID register.
13736 We do not support DC ZVA at the moment, so
13737 we return a value with the disable bit set.
13738 We implement support for the DCZID register since
13739 it is used by the C library's memset function. */
13740 return ((uint64_t) 1) << 4;
13741
13742 if (crn == 0 && op1 == 3 && crm == 0 && op2 == 1)
13743 /* Cache Type Register. */
13744 return 0x80008000UL;
13745
13746 if (crn == 13 && op1 == 3 && crm == 0 && op2 == 2)
13747 /* TPIDR_EL0 - thread pointer id. */
13748 return aarch64_get_thread_id (cpu);
13749
13750 if (op1 == 3 && crm == 4 && op2 == 0)
13751 return aarch64_get_FPCR (cpu);
13752
13753 if (op1 == 3 && crm == 4 && op2 == 1)
13754 return aarch64_get_FPSR (cpu);
13755
13756 else if (op1 == 3 && crm == 2 && op2 == 0)
13757 return aarch64_get_CPSR (cpu);
13758
13759 HALT_NYI;
13760 }
13761
13762 static void
13763 system_set (sim_cpu *cpu, unsigned op0, unsigned op1, unsigned crn,
13764 unsigned crm, unsigned op2, uint64_t val)
13765 {
13766 if (op1 == 3 && crm == 4 && op2 == 0)
13767 aarch64_set_FPCR (cpu, val);
13768
13769 else if (op1 == 3 && crm == 4 && op2 == 1)
13770 aarch64_set_FPSR (cpu, val);
13771
13772 else if (op1 == 3 && crm == 2 && op2 == 0)
13773 aarch64_set_CPSR (cpu, val);
13774
13775 else
13776 HALT_NYI;
13777 }
13778
13779 static void
13780 do_mrs (sim_cpu *cpu)
13781 {
13782 /* instr[31:20] = 1101 0101 0001 1
13783 instr[19] = op0
13784 instr[18,16] = op1
13785 instr[15,12] = CRn
13786 instr[11,8] = CRm
13787 instr[7,5] = op2
13788 instr[4,0] = Rt */
13789 unsigned sys_op0 = INSTR (19, 19) + 2;
13790 unsigned sys_op1 = INSTR (18, 16);
13791 unsigned sys_crn = INSTR (15, 12);
13792 unsigned sys_crm = INSTR (11, 8);
13793 unsigned sys_op2 = INSTR (7, 5);
13794 unsigned rt = INSTR (4, 0);
13795
13796 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13797 aarch64_set_reg_u64 (cpu, rt, NO_SP,
13798 system_get (cpu, sys_op0, sys_op1, sys_crn, sys_crm, sys_op2));
13799 }
13800
13801 static void
13802 do_MSR_immediate (sim_cpu *cpu)
13803 {
13804 /* instr[31:19] = 1101 0101 0000 0
13805 instr[18,16] = op1
13806 instr[15,12] = 0100
13807 instr[11,8] = CRm
13808 instr[7,5] = op2
13809 instr[4,0] = 1 1111 */
13810
13811 unsigned op1 = INSTR (18, 16);
13812 /*unsigned crm = INSTR (11, 8);*/
13813 unsigned op2 = INSTR (7, 5);
13814
13815 NYI_assert (31, 19, 0x1AA0);
13816 NYI_assert (15, 12, 0x4);
13817 NYI_assert (4, 0, 0x1F);
13818
13819 if (op1 == 0)
13820 {
13821 if (op2 == 5)
13822 HALT_NYI; /* set SPSel. */
13823 else
13824 HALT_UNALLOC;
13825 }
13826 else if (op1 == 3)
13827 {
13828 if (op2 == 6)
13829 HALT_NYI; /* set DAIFset. */
13830 else if (op2 == 7)
13831 HALT_NYI; /* set DAIFclr. */
13832 else
13833 HALT_UNALLOC;
13834 }
13835 else
13836 HALT_UNALLOC;
13837 }
13838
13839 static void
13840 do_MSR_reg (sim_cpu *cpu)
13841 {
13842 /* instr[31:20] = 1101 0101 0001
13843 instr[19] = op0
13844 instr[18,16] = op1
13845 instr[15,12] = CRn
13846 instr[11,8] = CRm
13847 instr[7,5] = op2
13848 instr[4,0] = Rt */
13849
13850 unsigned sys_op0 = INSTR (19, 19) + 2;
13851 unsigned sys_op1 = INSTR (18, 16);
13852 unsigned sys_crn = INSTR (15, 12);
13853 unsigned sys_crm = INSTR (11, 8);
13854 unsigned sys_op2 = INSTR (7, 5);
13855 unsigned rt = INSTR (4, 0);
13856
13857 NYI_assert (31, 20, 0xD51);
13858
13859 TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
13860 system_set (cpu, sys_op0, sys_op1, sys_crn, sys_crm, sys_op2,
13861 aarch64_get_reg_u64 (cpu, rt, NO_SP));
13862 }
13863
13864 static void
13865 do_SYS (sim_cpu *cpu)
13866 {
13867 /* instr[31,19] = 1101 0101 0000 1
13868 instr[18,16] = op1
13869 instr[15,12] = CRn
13870 instr[11,8] = CRm
13871 instr[7,5] = op2
13872 instr[4,0] = Rt */
13873 NYI_assert (31, 19, 0x1AA1);
13874
13875 /* FIXME: For now we just silently accept system ops. */
13876 }
13877
13878 static void
13879 dexSystem (sim_cpu *cpu)
13880 {
13881 /* instr[31:22] = 1101 01010 0
13882 instr[21] = L
13883 instr[20,19] = op0
13884 instr[18,16] = op1
13885 instr[15,12] = CRn
13886 instr[11,8] = CRm
13887 instr[7,5] = op2
13888 instr[4,0] = uimm5 */
13889
13890 /* We are interested in HINT, DSB, DMB and ISB
13891
13892 Hint #0 encodes NOOP (this is the only hint we care about)
13893 L == 0, op0 == 0, op1 = 011, CRn = 0010, Rt = 11111,
13894 CRm op2 != 0000 000 OR CRm op2 == 0000 000 || CRm op > 0000 101
13895
13896 DSB, DMB, ISB are data store barrier, data memory barrier and
13897 instruction store barrier, respectively, where
13898
13899 L == 0, op0 == 0, op1 = 011, CRn = 0011, Rt = 11111,
13900 op2 : DSB ==> 100, DMB ==> 101, ISB ==> 110
13901 CRm<3:2> ==> domain, CRm<1:0> ==> types,
13902 domain : 00 ==> OuterShareable, 01 ==> Nonshareable,
13903 10 ==> InerShareable, 11 ==> FullSystem
13904 types : 01 ==> Reads, 10 ==> Writes,
13905 11 ==> All, 00 ==> All (domain == FullSystem). */
13906
13907 unsigned rt = INSTR (4, 0);
13908
13909 NYI_assert (31, 22, 0x354);
13910
13911 switch (INSTR (21, 12))
13912 {
13913 case 0x032:
13914 if (rt == 0x1F)
13915 {
13916 /* NOP has CRm != 0000 OR. */
13917 /* (CRm == 0000 AND (op2 == 000 OR op2 > 101)). */
13918 uint32_t crm = INSTR (11, 8);
13919 uint32_t op2 = INSTR (7, 5);
13920
13921 if (crm != 0 || (op2 == 0 || op2 > 5))
13922 {
13923 /* Actually call nop method so we can reimplement it later. */
13924 nop (cpu);
13925 return;
13926 }
13927 }
13928 HALT_NYI;
13929
13930 case 0x033:
13931 {
13932 uint32_t op2 = INSTR (7, 5);
13933
13934 switch (op2)
13935 {
13936 case 2: HALT_NYI;
13937 case 4: dsb (cpu); return;
13938 case 5: dmb (cpu); return;
13939 case 6: isb (cpu); return;
13940 default: HALT_UNALLOC;
13941 }
13942 }
13943
13944 case 0x3B0:
13945 case 0x3B4:
13946 case 0x3BD:
13947 do_mrs (cpu);
13948 return;
13949
13950 case 0x0B7:
13951 do_SYS (cpu); /* DC is an alias of SYS. */
13952 return;
13953
13954 default:
13955 if (INSTR (21, 20) == 0x1)
13956 do_MSR_reg (cpu);
13957 else if (INSTR (21, 19) == 0 && INSTR (15, 12) == 0x4)
13958 do_MSR_immediate (cpu);
13959 else
13960 HALT_NYI;
13961 return;
13962 }
13963 }
13964
13965 static void
13966 dexBr (sim_cpu *cpu)
13967 {
13968 /* uint32_t group = dispatchGroup (aarch64_get_instr (cpu));
13969 assert group == GROUP_BREXSYS_1010 || group == GROUP_BREXSYS_1011
13970 bits [31,29] of a BrExSys are the secondary dispatch vector. */
13971 uint32_t group2 = dispatchBrExSys (aarch64_get_instr (cpu));
13972
13973 switch (group2)
13974 {
13975 case BR_IMM_000:
13976 return dexBranchImmediate (cpu);
13977
13978 case BR_IMMCMP_001:
13979 /* Compare has bit 25 clear while test has it set. */
13980 if (!INSTR (25, 25))
13981 dexCompareBranchImmediate (cpu);
13982 else
13983 dexTestBranchImmediate (cpu);
13984 return;
13985
13986 case BR_IMMCOND_010:
13987 /* This is a conditional branch if bit 25 is clear otherwise
13988 unallocated. */
13989 if (!INSTR (25, 25))
13990 dexCondBranchImmediate (cpu);
13991 else
13992 HALT_UNALLOC;
13993 return;
13994
13995 case BR_UNALLOC_011:
13996 HALT_UNALLOC;
13997
13998 case BR_IMM_100:
13999 dexBranchImmediate (cpu);
14000 return;
14001
14002 case BR_IMMCMP_101:
14003 /* Compare has bit 25 clear while test has it set. */
14004 if (!INSTR (25, 25))
14005 dexCompareBranchImmediate (cpu);
14006 else
14007 dexTestBranchImmediate (cpu);
14008 return;
14009
14010 case BR_REG_110:
14011 /* Unconditional branch reg has bit 25 set. */
14012 if (INSTR (25, 25))
14013 dexBranchRegister (cpu);
14014
14015 /* This includes both Excpn Gen, System and unalloc operations.
14016 We need to decode the Excpn Gen operation BRK so we can plant
14017 debugger entry points.
14018 Excpn Gen operations have instr [24] = 0.
14019 we need to decode at least one of the System operations NOP
14020 which is an alias for HINT #0.
14021 System operations have instr [24,22] = 100. */
14022 else if (INSTR (24, 24) == 0)
14023 dexExcpnGen (cpu);
14024
14025 else if (INSTR (24, 22) == 4)
14026 dexSystem (cpu);
14027
14028 else
14029 HALT_UNALLOC;
14030
14031 return;
14032
14033 case BR_UNALLOC_111:
14034 HALT_UNALLOC;
14035
14036 default:
14037 /* Should never reach here. */
14038 HALT_NYI;
14039 }
14040 }
14041
14042 static void
14043 aarch64_decode_and_execute (sim_cpu *cpu, uint64_t pc)
14044 {
14045 /* We need to check if gdb wants an in here. */
14046 /* checkBreak (cpu);. */
14047
14048 uint64_t group = dispatchGroup (aarch64_get_instr (cpu));
14049
14050 switch (group)
14051 {
14052 case GROUP_PSEUDO_0000: dexPseudo (cpu); break;
14053 case GROUP_LDST_0100: dexLdSt (cpu); break;
14054 case GROUP_DPREG_0101: dexDPReg (cpu); break;
14055 case GROUP_LDST_0110: dexLdSt (cpu); break;
14056 case GROUP_ADVSIMD_0111: dexAdvSIMD0 (cpu); break;
14057 case GROUP_DPIMM_1000: dexDPImm (cpu); break;
14058 case GROUP_DPIMM_1001: dexDPImm (cpu); break;
14059 case GROUP_BREXSYS_1010: dexBr (cpu); break;
14060 case GROUP_BREXSYS_1011: dexBr (cpu); break;
14061 case GROUP_LDST_1100: dexLdSt (cpu); break;
14062 case GROUP_DPREG_1101: dexDPReg (cpu); break;
14063 case GROUP_LDST_1110: dexLdSt (cpu); break;
14064 case GROUP_ADVSIMD_1111: dexAdvSIMD1 (cpu); break;
14065
14066 case GROUP_UNALLOC_0001:
14067 case GROUP_UNALLOC_0010:
14068 case GROUP_UNALLOC_0011:
14069 HALT_UNALLOC;
14070
14071 default:
14072 /* Should never reach here. */
14073 HALT_NYI;
14074 }
14075 }
14076
14077 static bfd_boolean
14078 aarch64_step (sim_cpu *cpu)
14079 {
14080 uint64_t pc = aarch64_get_PC (cpu);
14081
14082 if (pc == TOP_LEVEL_RETURN_PC)
14083 return FALSE;
14084
14085 aarch64_set_next_PC (cpu, pc + 4);
14086
14087 /* Code is always little-endian. */
14088 sim_core_read_buffer (CPU_STATE (cpu), cpu, read_map,
14089 & aarch64_get_instr (cpu), pc, 4);
14090 aarch64_get_instr (cpu) = endian_le2h_4 (aarch64_get_instr (cpu));
14091
14092 TRACE_INSN (cpu, " pc = %" PRIx64 " instr = %08x", pc,
14093 aarch64_get_instr (cpu));
14094 TRACE_DISASM (cpu, pc);
14095
14096 aarch64_decode_and_execute (cpu, pc);
14097
14098 return TRUE;
14099 }
14100
14101 void
14102 aarch64_run (SIM_DESC sd)
14103 {
14104 sim_cpu *cpu = STATE_CPU (sd, 0);
14105
14106 while (aarch64_step (cpu))
14107 aarch64_update_PC (cpu);
14108
14109 sim_engine_halt (sd, NULL, NULL, aarch64_get_PC (cpu),
14110 sim_exited, aarch64_get_reg_s32 (cpu, R0, SP_OK));
14111 }
14112
14113 void
14114 aarch64_init (sim_cpu *cpu, uint64_t pc)
14115 {
14116 uint64_t sp = aarch64_get_stack_start (cpu);
14117
14118 /* Install SP, FP and PC and set LR to -20
14119 so we can detect a top-level return. */
14120 aarch64_set_reg_u64 (cpu, SP, SP_OK, sp);
14121 aarch64_set_reg_u64 (cpu, FP, SP_OK, sp);
14122 aarch64_set_reg_u64 (cpu, LR, SP_OK, TOP_LEVEL_RETURN_PC);
14123 aarch64_set_next_PC (cpu, pc);
14124 aarch64_update_PC (cpu);
14125 aarch64_init_LIT_table ();
14126 }
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