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-rw-r--r--arch/powerpc/kvm/emulate.c447
1 files changed, 31 insertions, 416 deletions
diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c
index 0fce4fbdc20d..d1d38daa93fb 100644
--- a/arch/powerpc/kvm/emulate.c
+++ b/arch/powerpc/kvm/emulate.c
@@ -23,161 +23,14 @@
23#include <linux/string.h> 23#include <linux/string.h>
24#include <linux/kvm_host.h> 24#include <linux/kvm_host.h>
25 25
26#include <asm/dcr.h> 26#include <asm/reg.h>
27#include <asm/dcr-regs.h>
28#include <asm/time.h> 27#include <asm/time.h>
29#include <asm/byteorder.h> 28#include <asm/byteorder.h>
30#include <asm/kvm_ppc.h> 29#include <asm/kvm_ppc.h>
30#include <asm/disassemble.h>
31#include "timing.h"
31 32
32#include "44x_tlb.h" 33void kvmppc_emulate_dec(struct kvm_vcpu *vcpu)
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, get_tlb_end(tlbe), 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 KVMTRACE_5D(GTLB_WRITE, vcpu, index,
174 tlbe->tid, tlbe->word0, tlbe->word1, tlbe->word2,
175 handler);
176
177 return EMULATE_DONE;
178}
179
180static void kvmppc_emulate_dec(struct kvm_vcpu *vcpu)
181{ 34{
182 if (vcpu->arch.tcr & TCR_DIE) { 35 if (vcpu->arch.tcr & TCR_DIE) {
183 /* The decrementer ticks at the same rate as the timebase, so 36 /* The decrementer ticks at the same rate as the timebase, so
@@ -193,12 +46,6 @@ static void kvmppc_emulate_dec(struct kvm_vcpu *vcpu)
193 } 46 }
194} 47}
195 48
196static void kvmppc_emul_rfi(struct kvm_vcpu *vcpu)
197{
198 vcpu->arch.pc = vcpu->arch.srr0;
199 kvmppc_set_msr(vcpu, vcpu->arch.srr1);
200}
201
202/* XXX to do: 49/* XXX to do:
203 * lhax 50 * lhax
204 * lhaux 51 * lhaux
@@ -213,40 +60,30 @@ static void kvmppc_emul_rfi(struct kvm_vcpu *vcpu)
213 * 60 *
214 * XXX is_bigendian should depend on MMU mapping or MSR[LE] 61 * XXX is_bigendian should depend on MMU mapping or MSR[LE]
215 */ 62 */
63/* XXX Should probably auto-generate instruction decoding for a particular core
64 * from opcode tables in the future. */
216int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu) 65int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
217{ 66{
218 u32 inst = vcpu->arch.last_inst; 67 u32 inst = vcpu->arch.last_inst;
219 u32 ea; 68 u32 ea;
220 int ra; 69 int ra;
221 int rb; 70 int rb;
222 int rc;
223 int rs; 71 int rs;
224 int rt; 72 int rt;
225 int sprn; 73 int sprn;
226 int dcrn;
227 enum emulation_result emulated = EMULATE_DONE; 74 enum emulation_result emulated = EMULATE_DONE;
228 int advance = 1; 75 int advance = 1;
229 76
77 /* this default type might be overwritten by subcategories */
78 kvmppc_set_exit_type(vcpu, EMULATED_INST_EXITS);
79
230 switch (get_op(inst)) { 80 switch (get_op(inst)) {
231 case 3: /* trap */ 81 case 3: /* trap */
232 printk("trap!\n"); 82 vcpu->arch.esr |= ESR_PTR;
233 kvmppc_queue_exception(vcpu, BOOKE_INTERRUPT_PROGRAM); 83 kvmppc_core_queue_program(vcpu);
234 advance = 0; 84 advance = 0;
235 break; 85 break;
236 86
237 case 19:
238 switch (get_xop(inst)) {
239 case 50: /* rfi */
240 kvmppc_emul_rfi(vcpu);
241 advance = 0;
242 break;
243
244 default:
245 emulated = EMULATE_FAIL;
246 break;
247 }
248 break;
249
250 case 31: 87 case 31:
251 switch (get_xop(inst)) { 88 switch (get_xop(inst)) {
252 89
@@ -255,27 +92,11 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
255 emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1); 92 emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1);
256 break; 93 break;
257 94
258 case 83: /* mfmsr */
259 rt = get_rt(inst);
260 vcpu->arch.gpr[rt] = vcpu->arch.msr;
261 break;
262
263 case 87: /* lbzx */ 95 case 87: /* lbzx */
264 rt = get_rt(inst); 96 rt = get_rt(inst);
265 emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1); 97 emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1);
266 break; 98 break;
267 99
268 case 131: /* wrtee */
269 rs = get_rs(inst);
270 vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE)
271 | (vcpu->arch.gpr[rs] & MSR_EE);
272 break;
273
274 case 146: /* mtmsr */
275 rs = get_rs(inst);
276 kvmppc_set_msr(vcpu, vcpu->arch.gpr[rs]);
277 break;
278
279 case 151: /* stwx */ 100 case 151: /* stwx */
280 rs = get_rs(inst); 101 rs = get_rs(inst);
281 emulated = kvmppc_handle_store(run, vcpu, 102 emulated = kvmppc_handle_store(run, vcpu,
@@ -283,11 +104,6 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
283 4, 1); 104 4, 1);
284 break; 105 break;
285 106
286 case 163: /* wrteei */
287 vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE)
288 | (inst & MSR_EE);
289 break;
290
291 case 215: /* stbx */ 107 case 215: /* stbx */
292 rs = get_rs(inst); 108 rs = get_rs(inst);
293 emulated = kvmppc_handle_store(run, vcpu, 109 emulated = kvmppc_handle_store(run, vcpu,
@@ -328,42 +144,6 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
328 vcpu->arch.gpr[ra] = ea; 144 vcpu->arch.gpr[ra] = ea;
329 break; 145 break;
330 146
331 case 323: /* mfdcr */
332 dcrn = get_dcrn(inst);
333 rt = get_rt(inst);
334
335 /* The guest may access CPR0 registers to determine the timebase
336 * frequency, and it must know the real host frequency because it
337 * can directly access the timebase registers.
338 *
339 * It would be possible to emulate those accesses in userspace,
340 * but userspace can really only figure out the end frequency.
341 * We could decompose that into the factors that compute it, but
342 * that's tricky math, and it's easier to just report the real
343 * CPR0 values.
344 */
345 switch (dcrn) {
346 case DCRN_CPR0_CONFIG_ADDR:
347 vcpu->arch.gpr[rt] = vcpu->arch.cpr0_cfgaddr;
348 break;
349 case DCRN_CPR0_CONFIG_DATA:
350 local_irq_disable();
351 mtdcr(DCRN_CPR0_CONFIG_ADDR,
352 vcpu->arch.cpr0_cfgaddr);
353 vcpu->arch.gpr[rt] = mfdcr(DCRN_CPR0_CONFIG_DATA);
354 local_irq_enable();
355 break;
356 default:
357 run->dcr.dcrn = dcrn;
358 run->dcr.data = 0;
359 run->dcr.is_write = 0;
360 vcpu->arch.io_gpr = rt;
361 vcpu->arch.dcr_needed = 1;
362 emulated = EMULATE_DO_DCR;
363 }
364
365 break;
366
367 case 339: /* mfspr */ 147 case 339: /* mfspr */
368 sprn = get_sprn(inst); 148 sprn = get_sprn(inst);
369 rt = get_rt(inst); 149 rt = get_rt(inst);
@@ -373,26 +153,8 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
373 vcpu->arch.gpr[rt] = vcpu->arch.srr0; break; 153 vcpu->arch.gpr[rt] = vcpu->arch.srr0; break;
374 case SPRN_SRR1: 154 case SPRN_SRR1:
375 vcpu->arch.gpr[rt] = vcpu->arch.srr1; break; 155 vcpu->arch.gpr[rt] = vcpu->arch.srr1; break;
376 case SPRN_MMUCR:
377 vcpu->arch.gpr[rt] = vcpu->arch.mmucr; break;
378 case SPRN_PID:
379 vcpu->arch.gpr[rt] = vcpu->arch.pid; break;
380 case SPRN_IVPR:
381 vcpu->arch.gpr[rt] = vcpu->arch.ivpr; break;
382 case SPRN_CCR0:
383 vcpu->arch.gpr[rt] = vcpu->arch.ccr0; break;
384 case SPRN_CCR1:
385 vcpu->arch.gpr[rt] = vcpu->arch.ccr1; break;
386 case SPRN_PVR: 156 case SPRN_PVR:
387 vcpu->arch.gpr[rt] = vcpu->arch.pvr; break; 157 vcpu->arch.gpr[rt] = vcpu->arch.pvr; break;
388 case SPRN_DEAR:
389 vcpu->arch.gpr[rt] = vcpu->arch.dear; break;
390 case SPRN_ESR:
391 vcpu->arch.gpr[rt] = vcpu->arch.esr; break;
392 case SPRN_DBCR0:
393 vcpu->arch.gpr[rt] = vcpu->arch.dbcr0; break;
394 case SPRN_DBCR1:
395 vcpu->arch.gpr[rt] = vcpu->arch.dbcr1; break;
396 158
397 /* Note: mftb and TBRL/TBWL are user-accessible, so 159 /* Note: mftb and TBRL/TBWL are user-accessible, so
398 * the guest can always access the real TB anyways. 160 * the guest can always access the real TB anyways.
@@ -413,42 +175,12 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
413 /* Note: SPRG4-7 are user-readable, so we don't get 175 /* Note: SPRG4-7 are user-readable, so we don't get
414 * a trap. */ 176 * a trap. */
415 177
416 case SPRN_IVOR0:
417 vcpu->arch.gpr[rt] = vcpu->arch.ivor[0]; break;
418 case SPRN_IVOR1:
419 vcpu->arch.gpr[rt] = vcpu->arch.ivor[1]; break;
420 case SPRN_IVOR2:
421 vcpu->arch.gpr[rt] = vcpu->arch.ivor[2]; break;
422 case SPRN_IVOR3:
423 vcpu->arch.gpr[rt] = vcpu->arch.ivor[3]; break;
424 case SPRN_IVOR4:
425 vcpu->arch.gpr[rt] = vcpu->arch.ivor[4]; break;
426 case SPRN_IVOR5:
427 vcpu->arch.gpr[rt] = vcpu->arch.ivor[5]; break;
428 case SPRN_IVOR6:
429 vcpu->arch.gpr[rt] = vcpu->arch.ivor[6]; break;
430 case SPRN_IVOR7:
431 vcpu->arch.gpr[rt] = vcpu->arch.ivor[7]; break;
432 case SPRN_IVOR8:
433 vcpu->arch.gpr[rt] = vcpu->arch.ivor[8]; break;
434 case SPRN_IVOR9:
435 vcpu->arch.gpr[rt] = vcpu->arch.ivor[9]; break;
436 case SPRN_IVOR10:
437 vcpu->arch.gpr[rt] = vcpu->arch.ivor[10]; break;
438 case SPRN_IVOR11:
439 vcpu->arch.gpr[rt] = vcpu->arch.ivor[11]; break;
440 case SPRN_IVOR12:
441 vcpu->arch.gpr[rt] = vcpu->arch.ivor[12]; break;
442 case SPRN_IVOR13:
443 vcpu->arch.gpr[rt] = vcpu->arch.ivor[13]; break;
444 case SPRN_IVOR14:
445 vcpu->arch.gpr[rt] = vcpu->arch.ivor[14]; break;
446 case SPRN_IVOR15:
447 vcpu->arch.gpr[rt] = vcpu->arch.ivor[15]; break;
448
449 default: 178 default:
450 printk("mfspr: unknown spr %x\n", sprn); 179 emulated = kvmppc_core_emulate_mfspr(vcpu, sprn, rt);
451 vcpu->arch.gpr[rt] = 0; 180 if (emulated == EMULATE_FAIL) {
181 printk("mfspr: unknown spr %x\n", sprn);
182 vcpu->arch.gpr[rt] = 0;
183 }
452 break; 184 break;
453 } 185 }
454 break; 186 break;
@@ -478,25 +210,6 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
478 vcpu->arch.gpr[ra] = ea; 210 vcpu->arch.gpr[ra] = ea;
479 break; 211 break;
480 212
481 case 451: /* mtdcr */
482 dcrn = get_dcrn(inst);
483 rs = get_rs(inst);
484
485 /* emulate some access in kernel */
486 switch (dcrn) {
487 case DCRN_CPR0_CONFIG_ADDR:
488 vcpu->arch.cpr0_cfgaddr = vcpu->arch.gpr[rs];
489 break;
490 default:
491 run->dcr.dcrn = dcrn;
492 run->dcr.data = vcpu->arch.gpr[rs];
493 run->dcr.is_write = 1;
494 vcpu->arch.dcr_needed = 1;
495 emulated = EMULATE_DO_DCR;
496 }
497
498 break;
499
500 case 467: /* mtspr */ 213 case 467: /* mtspr */
501 sprn = get_sprn(inst); 214 sprn = get_sprn(inst);
502 rs = get_rs(inst); 215 rs = get_rs(inst);
@@ -505,22 +218,6 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
505 vcpu->arch.srr0 = vcpu->arch.gpr[rs]; break; 218 vcpu->arch.srr0 = vcpu->arch.gpr[rs]; break;
506 case SPRN_SRR1: 219 case SPRN_SRR1:
507 vcpu->arch.srr1 = vcpu->arch.gpr[rs]; break; 220 vcpu->arch.srr1 = vcpu->arch.gpr[rs]; break;
508 case SPRN_MMUCR:
509 vcpu->arch.mmucr = vcpu->arch.gpr[rs]; break;
510 case SPRN_PID:
511 kvmppc_set_pid(vcpu, vcpu->arch.gpr[rs]); break;
512 case SPRN_CCR0:
513 vcpu->arch.ccr0 = vcpu->arch.gpr[rs]; break;
514 case SPRN_CCR1:
515 vcpu->arch.ccr1 = vcpu->arch.gpr[rs]; break;
516 case SPRN_DEAR:
517 vcpu->arch.dear = vcpu->arch.gpr[rs]; break;
518 case SPRN_ESR:
519 vcpu->arch.esr = vcpu->arch.gpr[rs]; break;
520 case SPRN_DBCR0:
521 vcpu->arch.dbcr0 = vcpu->arch.gpr[rs]; break;
522 case SPRN_DBCR1:
523 vcpu->arch.dbcr1 = vcpu->arch.gpr[rs]; break;
524 221
525 /* XXX We need to context-switch the timebase for 222 /* XXX We need to context-switch the timebase for
526 * watchdog and FIT. */ 223 * watchdog and FIT. */
@@ -532,14 +229,6 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
532 kvmppc_emulate_dec(vcpu); 229 kvmppc_emulate_dec(vcpu);
533 break; 230 break;
534 231
535 case SPRN_TSR:
536 vcpu->arch.tsr &= ~vcpu->arch.gpr[rs]; break;
537
538 case SPRN_TCR:
539 vcpu->arch.tcr = vcpu->arch.gpr[rs];
540 kvmppc_emulate_dec(vcpu);
541 break;
542
543 case SPRN_SPRG0: 232 case SPRN_SPRG0:
544 vcpu->arch.sprg0 = vcpu->arch.gpr[rs]; break; 233 vcpu->arch.sprg0 = vcpu->arch.gpr[rs]; break;
545 case SPRN_SPRG1: 234 case SPRN_SPRG1:
@@ -549,56 +238,10 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
549 case SPRN_SPRG3: 238 case SPRN_SPRG3:
550 vcpu->arch.sprg3 = vcpu->arch.gpr[rs]; break; 239 vcpu->arch.sprg3 = vcpu->arch.gpr[rs]; break;
551 240
552 /* Note: SPRG4-7 are user-readable. These values are
553 * loaded into the real SPRGs when resuming the
554 * guest. */
555 case SPRN_SPRG4:
556 vcpu->arch.sprg4 = vcpu->arch.gpr[rs]; break;
557 case SPRN_SPRG5:
558 vcpu->arch.sprg5 = vcpu->arch.gpr[rs]; break;
559 case SPRN_SPRG6:
560 vcpu->arch.sprg6 = vcpu->arch.gpr[rs]; break;
561 case SPRN_SPRG7:
562 vcpu->arch.sprg7 = vcpu->arch.gpr[rs]; break;
563
564 case SPRN_IVPR:
565 vcpu->arch.ivpr = vcpu->arch.gpr[rs]; break;
566 case SPRN_IVOR0:
567 vcpu->arch.ivor[0] = vcpu->arch.gpr[rs]; break;
568 case SPRN_IVOR1:
569 vcpu->arch.ivor[1] = vcpu->arch.gpr[rs]; break;
570 case SPRN_IVOR2:
571 vcpu->arch.ivor[2] = vcpu->arch.gpr[rs]; break;
572 case SPRN_IVOR3:
573 vcpu->arch.ivor[3] = vcpu->arch.gpr[rs]; break;
574 case SPRN_IVOR4:
575 vcpu->arch.ivor[4] = vcpu->arch.gpr[rs]; break;
576 case SPRN_IVOR5:
577 vcpu->arch.ivor[5] = vcpu->arch.gpr[rs]; break;
578 case SPRN_IVOR6:
579 vcpu->arch.ivor[6] = vcpu->arch.gpr[rs]; break;
580 case SPRN_IVOR7:
581 vcpu->arch.ivor[7] = vcpu->arch.gpr[rs]; break;
582 case SPRN_IVOR8:
583 vcpu->arch.ivor[8] = vcpu->arch.gpr[rs]; break;
584 case SPRN_IVOR9:
585 vcpu->arch.ivor[9] = vcpu->arch.gpr[rs]; break;
586 case SPRN_IVOR10:
587 vcpu->arch.ivor[10] = vcpu->arch.gpr[rs]; break;
588 case SPRN_IVOR11:
589 vcpu->arch.ivor[11] = vcpu->arch.gpr[rs]; break;
590 case SPRN_IVOR12:
591 vcpu->arch.ivor[12] = vcpu->arch.gpr[rs]; break;
592 case SPRN_IVOR13:
593 vcpu->arch.ivor[13] = vcpu->arch.gpr[rs]; break;
594 case SPRN_IVOR14:
595 vcpu->arch.ivor[14] = vcpu->arch.gpr[rs]; break;
596 case SPRN_IVOR15:
597 vcpu->arch.ivor[15] = vcpu->arch.gpr[rs]; break;
598
599 default: 241 default:
600 printk("mtspr: unknown spr %x\n", sprn); 242 emulated = kvmppc_core_emulate_mtspr(vcpu, sprn, rs);
601 emulated = EMULATE_FAIL; 243 if (emulated == EMULATE_FAIL)
244 printk("mtspr: unknown spr %x\n", sprn);
602 break; 245 break;
603 } 246 }
604 break; 247 break;
@@ -629,36 +272,6 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
629 4, 0); 272 4, 0);
630 break; 273 break;
631 274
632 case 978: /* tlbwe */
633 emulated = kvmppc_emul_tlbwe(vcpu, inst);
634 break;
635
636 case 914: { /* tlbsx */
637 int index;
638 unsigned int as = get_mmucr_sts(vcpu);
639 unsigned int pid = get_mmucr_stid(vcpu);
640
641 rt = get_rt(inst);
642 ra = get_ra(inst);
643 rb = get_rb(inst);
644 rc = get_rc(inst);
645
646 ea = vcpu->arch.gpr[rb];
647 if (ra)
648 ea += vcpu->arch.gpr[ra];
649
650 index = kvmppc_44x_tlb_index(vcpu, ea, pid, as);
651 if (rc) {
652 if (index < 0)
653 vcpu->arch.cr &= ~0x20000000;
654 else
655 vcpu->arch.cr |= 0x20000000;
656 }
657 vcpu->arch.gpr[rt] = index;
658
659 }
660 break;
661
662 case 790: /* lhbrx */ 275 case 790: /* lhbrx */
663 rt = get_rt(inst); 276 rt = get_rt(inst);
664 emulated = kvmppc_handle_load(run, vcpu, rt, 2, 0); 277 emulated = kvmppc_handle_load(run, vcpu, rt, 2, 0);
@@ -674,14 +287,9 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
674 2, 0); 287 2, 0);
675 break; 288 break;
676 289
677 case 966: /* iccci */
678 break;
679
680 default: 290 default:
681 printk("unknown: op %d xop %d\n", get_op(inst), 291 /* Attempt core-specific emulation below. */
682 get_xop(inst));
683 emulated = EMULATE_FAIL; 292 emulated = EMULATE_FAIL;
684 break;
685 } 293 }
686 break; 294 break;
687 295
@@ -764,12 +372,19 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
764 break; 372 break;
765 373
766 default: 374 default:
767 printk("unknown op %d\n", get_op(inst));
768 emulated = EMULATE_FAIL; 375 emulated = EMULATE_FAIL;
769 break;
770 } 376 }
771 377
772 KVMTRACE_3D(PPC_INSTR, vcpu, inst, vcpu->arch.pc, emulated, entryexit); 378 if (emulated == EMULATE_FAIL) {
379 emulated = kvmppc_core_emulate_op(run, vcpu, inst, &advance);
380 if (emulated == EMULATE_FAIL) {
381 advance = 0;
382 printk(KERN_ERR "Couldn't emulate instruction 0x%08x "
383 "(op %d xop %d)\n", inst, get_op(inst), get_xop(inst));
384 }
385 }
386
387 KVMTRACE_3D(PPC_INSTR, vcpu, inst, (int)vcpu->arch.pc, emulated, entryexit);
773 388
774 if (advance) 389 if (advance)
775 vcpu->arch.pc += 4; /* Advance past emulated instruction. */ 390 vcpu->arch.pc += 4; /* Advance past emulated instruction. */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-07 16:45:15 -0500