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authorHollis Blanchard <hollisb@us.ibm.com>2008-04-17 00:28:09 -0400
committerAvi Kivity <avi@qumranet.com>2008-04-27 11:21:39 -0400
commitbbf45ba57eaec56569918a8bab96ab653bd45ec1 (patch)
tree63c53b1c1d93ec6559c7695c16b2345238e270f5 /arch/powerpc/kvm/emulate.c
parent513014b717203d1d689652d0fda86eee959a6a8a (diff)
KVM: ppc: PowerPC 440 KVM implementation
This functionality is definitely experimental, but is capable of running unmodified PowerPC 440 Linux kernels as guests on a PowerPC 440 host. (Only tested with 440EP "Bamboo" guests so far, but with appropriate userspace support other SoC/board combinations should work.) See Documentation/powerpc/kvm_440.txt for technical details. [stephen: build fix] Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch/powerpc/kvm/emulate.c')
-rw-r--r--arch/powerpc/kvm/emulate.c760
1 files changed, 760 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c
new file mode 100644
index 000000000000..a03fe0c80698
--- /dev/null
+++ b/arch/powerpc/kvm/emulate.c
@@ -0,0 +1,760 @@
1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
10 *
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
14 *
15 * Copyright IBM Corp. 2007
16 *
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18 */
19
20#include <linux/jiffies.h>
21#include <linux/timer.h>
22#include <linux/types.h>
23#include <linux/string.h>
24#include <linux/kvm_host.h>
25
26#include <asm/dcr.h>
27#include <asm/dcr-regs.h>
28#include <asm/time.h>
29#include <asm/byteorder.h>
30#include <asm/kvm_ppc.h>
31
32#include "44x_tlb.h"
33
34/* Instruction decoding */
35static inline unsigned int get_op(u32 inst)
36{
37 return inst >> 26;
38}
39
40static inline unsigned int get_xop(u32 inst)
41{
42 return (inst >> 1) & 0x3ff;
43}
44
45static inline unsigned int get_sprn(u32 inst)
46{
47 return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
48}
49
50static inline unsigned int get_dcrn(u32 inst)
51{
52 return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0);
53}
54
55static inline unsigned int get_rt(u32 inst)
56{
57 return (inst >> 21) & 0x1f;
58}
59
60static inline unsigned int get_rs(u32 inst)
61{
62 return (inst >> 21) & 0x1f;
63}
64
65static inline unsigned int get_ra(u32 inst)
66{
67 return (inst >> 16) & 0x1f;
68}
69
70static inline unsigned int get_rb(u32 inst)
71{
72 return (inst >> 11) & 0x1f;
73}
74
75static inline unsigned int get_rc(u32 inst)
76{
77 return inst & 0x1;
78}
79
80static inline unsigned int get_ws(u32 inst)
81{
82 return (inst >> 11) & 0x1f;
83}
84
85static inline unsigned int get_d(u32 inst)
86{
87 return inst & 0xffff;
88}
89
90static int tlbe_is_host_safe(const struct kvm_vcpu *vcpu,
91 const struct tlbe *tlbe)
92{
93 gpa_t gpa;
94
95 if (!get_tlb_v(tlbe))
96 return 0;
97
98 /* Does it match current guest AS? */
99 /* XXX what about IS != DS? */
100 if (get_tlb_ts(tlbe) != !!(vcpu->arch.msr & MSR_IS))
101 return 0;
102
103 gpa = get_tlb_raddr(tlbe);
104 if (!gfn_to_memslot(vcpu->kvm, gpa >> PAGE_SHIFT))
105 /* Mapping is not for RAM. */
106 return 0;
107
108 return 1;
109}
110
111static int kvmppc_emul_tlbwe(struct kvm_vcpu *vcpu, u32 inst)
112{
113 u64 eaddr;
114 u64 raddr;
115 u64 asid;
116 u32 flags;
117 struct tlbe *tlbe;
118 unsigned int ra;
119 unsigned int rs;
120 unsigned int ws;
121 unsigned int index;
122
123 ra = get_ra(inst);
124 rs = get_rs(inst);
125 ws = get_ws(inst);
126
127 index = vcpu->arch.gpr[ra];
128 if (index > PPC44x_TLB_SIZE) {
129 printk("%s: index %d\n", __func__, index);
130 kvmppc_dump_vcpu(vcpu);
131 return EMULATE_FAIL;
132 }
133
134 tlbe = &vcpu->arch.guest_tlb[index];
135
136 /* Invalidate shadow mappings for the about-to-be-clobbered TLBE. */
137 if (tlbe->word0 & PPC44x_TLB_VALID) {
138 eaddr = get_tlb_eaddr(tlbe);
139 asid = (tlbe->word0 & PPC44x_TLB_TS) | tlbe->tid;
140 kvmppc_mmu_invalidate(vcpu, eaddr, asid);
141 }
142
143 switch (ws) {
144 case PPC44x_TLB_PAGEID:
145 tlbe->tid = vcpu->arch.mmucr & 0xff;
146 tlbe->word0 = vcpu->arch.gpr[rs];
147 break;
148
149 case PPC44x_TLB_XLAT:
150 tlbe->word1 = vcpu->arch.gpr[rs];
151 break;
152
153 case PPC44x_TLB_ATTRIB:
154 tlbe->word2 = vcpu->arch.gpr[rs];
155 break;
156
157 default:
158 return EMULATE_FAIL;
159 }
160
161 if (tlbe_is_host_safe(vcpu, tlbe)) {
162 eaddr = get_tlb_eaddr(tlbe);
163 raddr = get_tlb_raddr(tlbe);
164 asid = (tlbe->word0 & PPC44x_TLB_TS) | tlbe->tid;
165 flags = tlbe->word2 & 0xffff;
166
167 /* Create a 4KB mapping on the host. If the guest wanted a
168 * large page, only the first 4KB is mapped here and the rest
169 * are mapped on the fly. */
170 kvmppc_mmu_map(vcpu, eaddr, raddr >> PAGE_SHIFT, asid, flags);
171 }
172
173 return EMULATE_DONE;
174}
175
176static void kvmppc_emulate_dec(struct kvm_vcpu *vcpu)
177{
178 if (vcpu->arch.tcr & TCR_DIE) {
179 /* The decrementer ticks at the same rate as the timebase, so
180 * that's how we convert the guest DEC value to the number of
181 * host ticks. */
182 unsigned long nr_jiffies;
183
184 nr_jiffies = vcpu->arch.dec / tb_ticks_per_jiffy;
185 mod_timer(&vcpu->arch.dec_timer,
186 get_jiffies_64() + nr_jiffies);
187 } else {
188 del_timer(&vcpu->arch.dec_timer);
189 }
190}
191
192static void kvmppc_emul_rfi(struct kvm_vcpu *vcpu)
193{
194 vcpu->arch.pc = vcpu->arch.srr0;
195 kvmppc_set_msr(vcpu, vcpu->arch.srr1);
196}
197
198/* XXX to do:
199 * lhax
200 * lhaux
201 * lswx
202 * lswi
203 * stswx
204 * stswi
205 * lha
206 * lhau
207 * lmw
208 * stmw
209 *
210 * XXX is_bigendian should depend on MMU mapping or MSR[LE]
211 */
212int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
213{
214 u32 inst = vcpu->arch.last_inst;
215 u32 ea;
216 int ra;
217 int rb;
218 int rc;
219 int rs;
220 int rt;
221 int sprn;
222 int dcrn;
223 enum emulation_result emulated = EMULATE_DONE;
224 int advance = 1;
225
226 switch (get_op(inst)) {
227 case 3: /* trap */
228 printk("trap!\n");
229 kvmppc_queue_exception(vcpu, BOOKE_INTERRUPT_PROGRAM);
230 advance = 0;
231 break;
232
233 case 19:
234 switch (get_xop(inst)) {
235 case 50: /* rfi */
236 kvmppc_emul_rfi(vcpu);
237 advance = 0;
238 break;
239
240 default:
241 emulated = EMULATE_FAIL;
242 break;
243 }
244 break;
245
246 case 31:
247 switch (get_xop(inst)) {
248
249 case 83: /* mfmsr */
250 rt = get_rt(inst);
251 vcpu->arch.gpr[rt] = vcpu->arch.msr;
252 break;
253
254 case 87: /* lbzx */
255 rt = get_rt(inst);
256 emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1);
257 break;
258
259 case 131: /* wrtee */
260 rs = get_rs(inst);
261 vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE)
262 | (vcpu->arch.gpr[rs] & MSR_EE);
263 break;
264
265 case 146: /* mtmsr */
266 rs = get_rs(inst);
267 kvmppc_set_msr(vcpu, vcpu->arch.gpr[rs]);
268 break;
269
270 case 163: /* wrteei */
271 vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE)
272 | (inst & MSR_EE);
273 break;
274
275 case 215: /* stbx */
276 rs = get_rs(inst);
277 emulated = kvmppc_handle_store(run, vcpu,
278 vcpu->arch.gpr[rs],
279 1, 1);
280 break;
281
282 case 247: /* stbux */
283 rs = get_rs(inst);
284 ra = get_ra(inst);
285 rb = get_rb(inst);
286
287 ea = vcpu->arch.gpr[rb];
288 if (ra)
289 ea += vcpu->arch.gpr[ra];
290
291 emulated = kvmppc_handle_store(run, vcpu,
292 vcpu->arch.gpr[rs],
293 1, 1);
294 vcpu->arch.gpr[rs] = ea;
295 break;
296
297 case 279: /* lhzx */
298 rt = get_rt(inst);
299 emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1);
300 break;
301
302 case 311: /* lhzux */
303 rt = get_rt(inst);
304 ra = get_ra(inst);
305 rb = get_rb(inst);
306
307 ea = vcpu->arch.gpr[rb];
308 if (ra)
309 ea += vcpu->arch.gpr[ra];
310
311 emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1);
312 vcpu->arch.gpr[ra] = ea;
313 break;
314
315 case 323: /* mfdcr */
316 dcrn = get_dcrn(inst);
317 rt = get_rt(inst);
318
319 /* The guest may access CPR0 registers to determine the timebase
320 * frequency, and it must know the real host frequency because it
321 * can directly access the timebase registers.
322 *
323 * It would be possible to emulate those accesses in userspace,
324 * but userspace can really only figure out the end frequency.
325 * We could decompose that into the factors that compute it, but
326 * that's tricky math, and it's easier to just report the real
327 * CPR0 values.
328 */
329 switch (dcrn) {
330 case DCRN_CPR0_CONFIG_ADDR:
331 vcpu->arch.gpr[rt] = vcpu->arch.cpr0_cfgaddr;
332 break;
333 case DCRN_CPR0_CONFIG_DATA:
334 local_irq_disable();
335 mtdcr(DCRN_CPR0_CONFIG_ADDR,
336 vcpu->arch.cpr0_cfgaddr);
337 vcpu->arch.gpr[rt] = mfdcr(DCRN_CPR0_CONFIG_DATA);
338 local_irq_enable();
339 break;
340 default:
341 run->dcr.dcrn = dcrn;
342 run->dcr.data = 0;
343 run->dcr.is_write = 0;
344 vcpu->arch.io_gpr = rt;
345 vcpu->arch.dcr_needed = 1;
346 emulated = EMULATE_DO_DCR;
347 }
348
349 break;
350
351 case 339: /* mfspr */
352 sprn = get_sprn(inst);
353 rt = get_rt(inst);
354
355 switch (sprn) {
356 case SPRN_SRR0:
357 vcpu->arch.gpr[rt] = vcpu->arch.srr0; break;
358 case SPRN_SRR1:
359 vcpu->arch.gpr[rt] = vcpu->arch.srr1; break;
360 case SPRN_MMUCR:
361 vcpu->arch.gpr[rt] = vcpu->arch.mmucr; break;
362 case SPRN_PID:
363 vcpu->arch.gpr[rt] = vcpu->arch.pid; break;
364 case SPRN_IVPR:
365 vcpu->arch.gpr[rt] = vcpu->arch.ivpr; break;
366 case SPRN_CCR0:
367 vcpu->arch.gpr[rt] = vcpu->arch.ccr0; break;
368 case SPRN_CCR1:
369 vcpu->arch.gpr[rt] = vcpu->arch.ccr1; break;
370 case SPRN_PVR:
371 vcpu->arch.gpr[rt] = vcpu->arch.pvr; break;
372 case SPRN_DEAR:
373 vcpu->arch.gpr[rt] = vcpu->arch.dear; break;
374 case SPRN_ESR:
375 vcpu->arch.gpr[rt] = vcpu->arch.esr; break;
376 case SPRN_DBCR0:
377 vcpu->arch.gpr[rt] = vcpu->arch.dbcr0; break;
378 case SPRN_DBCR1:
379 vcpu->arch.gpr[rt] = vcpu->arch.dbcr1; break;
380
381 /* Note: mftb and TBRL/TBWL are user-accessible, so
382 * the guest can always access the real TB anyways.
383 * In fact, we probably will never see these traps. */
384 case SPRN_TBWL:
385 vcpu->arch.gpr[rt] = mftbl(); break;
386 case SPRN_TBWU:
387 vcpu->arch.gpr[rt] = mftbu(); break;
388
389 case SPRN_SPRG0:
390 vcpu->arch.gpr[rt] = vcpu->arch.sprg0; break;
391 case SPRN_SPRG1:
392 vcpu->arch.gpr[rt] = vcpu->arch.sprg1; break;
393 case SPRN_SPRG2:
394 vcpu->arch.gpr[rt] = vcpu->arch.sprg2; break;
395 case SPRN_SPRG3:
396 vcpu->arch.gpr[rt] = vcpu->arch.sprg3; break;
397 /* Note: SPRG4-7 are user-readable, so we don't get
398 * a trap. */
399
400 case SPRN_IVOR0:
401 vcpu->arch.gpr[rt] = vcpu->arch.ivor[0]; break;
402 case SPRN_IVOR1:
403 vcpu->arch.gpr[rt] = vcpu->arch.ivor[1]; break;
404 case SPRN_IVOR2:
405 vcpu->arch.gpr[rt] = vcpu->arch.ivor[2]; break;
406 case SPRN_IVOR3:
407 vcpu->arch.gpr[rt] = vcpu->arch.ivor[3]; break;
408 case SPRN_IVOR4:
409 vcpu->arch.gpr[rt] = vcpu->arch.ivor[4]; break;
410 case SPRN_IVOR5:
411 vcpu->arch.gpr[rt] = vcpu->arch.ivor[5]; break;
412 case SPRN_IVOR6:
413 vcpu->arch.gpr[rt] = vcpu->arch.ivor[6]; break;
414 case SPRN_IVOR7:
415 vcpu->arch.gpr[rt] = vcpu->arch.ivor[7]; break;
416 case SPRN_IVOR8:
417 vcpu->arch.gpr[rt] = vcpu->arch.ivor[8]; break;
418 case SPRN_IVOR9:
419 vcpu->arch.gpr[rt] = vcpu->arch.ivor[9]; break;
420 case SPRN_IVOR10:
421 vcpu->arch.gpr[rt] = vcpu->arch.ivor[10]; break;
422 case SPRN_IVOR11:
423 vcpu->arch.gpr[rt] = vcpu->arch.ivor[11]; break;
424 case SPRN_IVOR12:
425 vcpu->arch.gpr[rt] = vcpu->arch.ivor[12]; break;
426 case SPRN_IVOR13:
427 vcpu->arch.gpr[rt] = vcpu->arch.ivor[13]; break;
428 case SPRN_IVOR14:
429 vcpu->arch.gpr[rt] = vcpu->arch.ivor[14]; break;
430 case SPRN_IVOR15:
431 vcpu->arch.gpr[rt] = vcpu->arch.ivor[15]; break;
432
433 default:
434 printk("mfspr: unknown spr %x\n", sprn);
435 vcpu->arch.gpr[rt] = 0;
436 break;
437 }
438 break;
439
440 case 407: /* sthx */
441 rs = get_rs(inst);
442 ra = get_ra(inst);
443 rb = get_rb(inst);
444
445 emulated = kvmppc_handle_store(run, vcpu,
446 vcpu->arch.gpr[rs],
447 2, 1);
448 break;
449
450 case 439: /* sthux */
451 rs = get_rs(inst);
452 ra = get_ra(inst);
453 rb = get_rb(inst);
454
455 ea = vcpu->arch.gpr[rb];
456 if (ra)
457 ea += vcpu->arch.gpr[ra];
458
459 emulated = kvmppc_handle_store(run, vcpu,
460 vcpu->arch.gpr[rs],
461 2, 1);
462 vcpu->arch.gpr[ra] = ea;
463 break;
464
465 case 451: /* mtdcr */
466 dcrn = get_dcrn(inst);
467 rs = get_rs(inst);
468
469 /* emulate some access in kernel */
470 switch (dcrn) {
471 case DCRN_CPR0_CONFIG_ADDR:
472 vcpu->arch.cpr0_cfgaddr = vcpu->arch.gpr[rs];
473 break;
474 default:
475 run->dcr.dcrn = dcrn;
476 run->dcr.data = vcpu->arch.gpr[rs];
477 run->dcr.is_write = 1;
478 vcpu->arch.dcr_needed = 1;
479 emulated = EMULATE_DO_DCR;
480 }
481
482 break;
483
484 case 467: /* mtspr */
485 sprn = get_sprn(inst);
486 rs = get_rs(inst);
487 switch (sprn) {
488 case SPRN_SRR0:
489 vcpu->arch.srr0 = vcpu->arch.gpr[rs]; break;
490 case SPRN_SRR1:
491 vcpu->arch.srr1 = vcpu->arch.gpr[rs]; break;
492 case SPRN_MMUCR:
493 vcpu->arch.mmucr = vcpu->arch.gpr[rs]; break;
494 case SPRN_PID:
495 vcpu->arch.pid = vcpu->arch.gpr[rs]; break;
496 case SPRN_CCR0:
497 vcpu->arch.ccr0 = vcpu->arch.gpr[rs]; break;
498 case SPRN_CCR1:
499 vcpu->arch.ccr1 = vcpu->arch.gpr[rs]; break;
500 case SPRN_DEAR:
501 vcpu->arch.dear = vcpu->arch.gpr[rs]; break;
502 case SPRN_ESR:
503 vcpu->arch.esr = vcpu->arch.gpr[rs]; break;
504 case SPRN_DBCR0:
505 vcpu->arch.dbcr0 = vcpu->arch.gpr[rs]; break;
506 case SPRN_DBCR1:
507 vcpu->arch.dbcr1 = vcpu->arch.gpr[rs]; break;
508
509 /* XXX We need to context-switch the timebase for
510 * watchdog and FIT. */
511 case SPRN_TBWL: break;
512 case SPRN_TBWU: break;
513
514 case SPRN_DEC:
515 vcpu->arch.dec = vcpu->arch.gpr[rs];
516 kvmppc_emulate_dec(vcpu);
517 break;
518
519 case SPRN_TSR:
520 vcpu->arch.tsr &= ~vcpu->arch.gpr[rs]; break;
521
522 case SPRN_TCR:
523 vcpu->arch.tcr = vcpu->arch.gpr[rs];
524 kvmppc_emulate_dec(vcpu);
525 break;
526
527 case SPRN_SPRG0:
528 vcpu->arch.sprg0 = vcpu->arch.gpr[rs]; break;
529 case SPRN_SPRG1:
530 vcpu->arch.sprg1 = vcpu->arch.gpr[rs]; break;
531 case SPRN_SPRG2:
532 vcpu->arch.sprg2 = vcpu->arch.gpr[rs]; break;
533 case SPRN_SPRG3:
534 vcpu->arch.sprg3 = vcpu->arch.gpr[rs]; break;
535
536 /* Note: SPRG4-7 are user-readable. These values are
537 * loaded into the real SPRGs when resuming the
538 * guest. */
539 case SPRN_SPRG4:
540 vcpu->arch.sprg4 = vcpu->arch.gpr[rs]; break;
541 case SPRN_SPRG5:
542 vcpu->arch.sprg5 = vcpu->arch.gpr[rs]; break;
543 case SPRN_SPRG6:
544 vcpu->arch.sprg6 = vcpu->arch.gpr[rs]; break;
545 case SPRN_SPRG7:
546 vcpu->arch.sprg7 = vcpu->arch.gpr[rs]; break;
547
548 case SPRN_IVPR:
549 vcpu->arch.ivpr = vcpu->arch.gpr[rs]; break;
550 case SPRN_IVOR0:
551 vcpu->arch.ivor[0] = vcpu->arch.gpr[rs]; break;
552 case SPRN_IVOR1:
553 vcpu->arch.ivor[1] = vcpu->arch.gpr[rs]; break;
554 case SPRN_IVOR2:
555 vcpu->arch.ivor[2] = vcpu->arch.gpr[rs]; break;
556 case SPRN_IVOR3:
557 vcpu->arch.ivor[3] = vcpu->arch.gpr[rs]; break;
558 case SPRN_IVOR4:
559 vcpu->arch.ivor[4] = vcpu->arch.gpr[rs]; break;
560 case SPRN_IVOR5:
561 vcpu->arch.ivor[5] = vcpu->arch.gpr[rs]; break;
562 case SPRN_IVOR6:
563 vcpu->arch.ivor[6] = vcpu->arch.gpr[rs]; break;
564 case SPRN_IVOR7:
565 vcpu->arch.ivor[7] = vcpu->arch.gpr[rs]; break;
566 case SPRN_IVOR8:
567 vcpu->arch.ivor[8] = vcpu->arch.gpr[rs]; break;
568 case SPRN_IVOR9:
569 vcpu->arch.ivor[9] = vcpu->arch.gpr[rs]; break;
570 case SPRN_IVOR10:
571 vcpu->arch.ivor[10] = vcpu->arch.gpr[rs]; break;
572 case SPRN_IVOR11:
573 vcpu->arch.ivor[11] = vcpu->arch.gpr[rs]; break;
574 case SPRN_IVOR12:
575 vcpu->arch.ivor[12] = vcpu->arch.gpr[rs]; break;
576 case SPRN_IVOR13:
577 vcpu->arch.ivor[13] = vcpu->arch.gpr[rs]; break;
578 case SPRN_IVOR14:
579 vcpu->arch.ivor[14] = vcpu->arch.gpr[rs]; break;
580 case SPRN_IVOR15:
581 vcpu->arch.ivor[15] = vcpu->arch.gpr[rs]; break;
582
583 default:
584 printk("mtspr: unknown spr %x\n", sprn);
585 emulated = EMULATE_FAIL;
586 break;
587 }
588 break;
589
590 case 470: /* dcbi */
591 /* Do nothing. The guest is performing dcbi because
592 * hardware DMA is not snooped by the dcache, but
593 * emulated DMA either goes through the dcache as
594 * normal writes, or the host kernel has handled dcache
595 * coherence. */
596 break;
597
598 case 534: /* lwbrx */
599 rt = get_rt(inst);
600 emulated = kvmppc_handle_load(run, vcpu, rt, 4, 0);
601 break;
602
603 case 566: /* tlbsync */
604 break;
605
606 case 662: /* stwbrx */
607 rs = get_rs(inst);
608 ra = get_ra(inst);
609 rb = get_rb(inst);
610
611 emulated = kvmppc_handle_store(run, vcpu,
612 vcpu->arch.gpr[rs],
613 4, 0);
614 break;
615
616 case 978: /* tlbwe */
617 emulated = kvmppc_emul_tlbwe(vcpu, inst);
618 break;
619
620 case 914: { /* tlbsx */
621 int index;
622 unsigned int as = get_mmucr_sts(vcpu);
623 unsigned int pid = get_mmucr_stid(vcpu);
624
625 rt = get_rt(inst);
626 ra = get_ra(inst);
627 rb = get_rb(inst);
628 rc = get_rc(inst);
629
630 ea = vcpu->arch.gpr[rb];
631 if (ra)
632 ea += vcpu->arch.gpr[ra];
633
634 index = kvmppc_44x_tlb_index(vcpu, ea, pid, as);
635 if (rc) {
636 if (index < 0)
637 vcpu->arch.cr &= ~0x20000000;
638 else
639 vcpu->arch.cr |= 0x20000000;
640 }
641 vcpu->arch.gpr[rt] = index;
642
643 }
644 break;
645
646 case 790: /* lhbrx */
647 rt = get_rt(inst);
648 emulated = kvmppc_handle_load(run, vcpu, rt, 2, 0);
649 break;
650
651 case 918: /* sthbrx */
652 rs = get_rs(inst);
653 ra = get_ra(inst);
654 rb = get_rb(inst);
655
656 emulated = kvmppc_handle_store(run, vcpu,
657 vcpu->arch.gpr[rs],
658 2, 0);
659 break;
660
661 case 966: /* iccci */
662 break;
663
664 default:
665 printk("unknown: op %d xop %d\n", get_op(inst),
666 get_xop(inst));
667 emulated = EMULATE_FAIL;
668 break;
669 }
670 break;
671
672 case 32: /* lwz */
673 rt = get_rt(inst);
674 emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1);
675 break;
676
677 case 33: /* lwzu */
678 ra = get_ra(inst);
679 rt = get_rt(inst);
680 emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1);
681 vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed;
682 break;
683
684 case 34: /* lbz */
685 rt = get_rt(inst);
686 emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1);
687 break;
688
689 case 35: /* lbzu */
690 ra = get_ra(inst);
691 rt = get_rt(inst);
692 emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1);
693 vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed;
694 break;
695
696 case 36: /* stw */
697 rs = get_rs(inst);
698 emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
699 4, 1);
700 break;
701
702 case 37: /* stwu */
703 ra = get_ra(inst);
704 rs = get_rs(inst);
705 emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
706 4, 1);
707 vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed;
708 break;
709
710 case 38: /* stb */
711 rs = get_rs(inst);
712 emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
713 1, 1);
714 break;
715
716 case 39: /* stbu */
717 ra = get_ra(inst);
718 rs = get_rs(inst);
719 emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
720 1, 1);
721 vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed;
722 break;
723
724 case 40: /* lhz */
725 rt = get_rt(inst);
726 emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1);
727 break;
728
729 case 41: /* lhzu */
730 ra = get_ra(inst);
731 rt = get_rt(inst);
732 emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1);
733 vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed;
734 break;
735
736 case 44: /* sth */
737 rs = get_rs(inst);
738 emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
739 2, 1);
740 break;
741
742 case 45: /* sthu */
743 ra = get_ra(inst);
744 rs = get_rs(inst);
745 emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
746 2, 1);
747 vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed;
748 break;
749
750 default:
751 printk("unknown op %d\n", get_op(inst));
752 emulated = EMULATE_FAIL;
753 break;
754 }
755
756 if (advance)
757 vcpu->arch.pc += 4; /* Advance past emulated instruction. */
758
759 return emulated;
760}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-04 09:29:34 -0500