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KVM: PPC: Convert MSR to shared page
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / arch / powerpc / kvm / book3s_paired_singles.c
blob626e6efaa79f4dc5b6494c21c37ab737f42ff0e1
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 Novell Inc 2010
16 *
17 * Authors: Alexander Graf <agraf@suse.de>
18 */
19
20 #include <asm/kvm.h>
21 #include <asm/kvm_ppc.h>
22 #include <asm/disassemble.h>
23 #include <asm/kvm_book3s.h>
24 #include <asm/kvm_fpu.h>
25 #include <asm/reg.h>
26 #include <asm/cacheflush.h>
27 #include <linux/vmalloc.h>
28
29 /* #define DEBUG */
30
31 #ifdef DEBUG
32 #define dprintk printk
33 #else
34 #define dprintk(...) do { } while(0);
35 #endif
36
37 #define OP_LFS 48
38 #define OP_LFSU 49
39 #define OP_LFD 50
40 #define OP_LFDU 51
41 #define OP_STFS 52
42 #define OP_STFSU 53
43 #define OP_STFD 54
44 #define OP_STFDU 55
45 #define OP_PSQ_L 56
46 #define OP_PSQ_LU 57
47 #define OP_PSQ_ST 60
48 #define OP_PSQ_STU 61
49
50 #define OP_31_LFSX 535
51 #define OP_31_LFSUX 567
52 #define OP_31_LFDX 599
53 #define OP_31_LFDUX 631
54 #define OP_31_STFSX 663
55 #define OP_31_STFSUX 695
56 #define OP_31_STFX 727
57 #define OP_31_STFUX 759
58 #define OP_31_LWIZX 887
59 #define OP_31_STFIWX 983
60
61 #define OP_59_FADDS 21
62 #define OP_59_FSUBS 20
63 #define OP_59_FSQRTS 22
64 #define OP_59_FDIVS 18
65 #define OP_59_FRES 24
66 #define OP_59_FMULS 25
67 #define OP_59_FRSQRTES 26
68 #define OP_59_FMSUBS 28
69 #define OP_59_FMADDS 29
70 #define OP_59_FNMSUBS 30
71 #define OP_59_FNMADDS 31
72
73 #define OP_63_FCMPU 0
74 #define OP_63_FCPSGN 8
75 #define OP_63_FRSP 12
76 #define OP_63_FCTIW 14
77 #define OP_63_FCTIWZ 15
78 #define OP_63_FDIV 18
79 #define OP_63_FADD 21
80 #define OP_63_FSQRT 22
81 #define OP_63_FSEL 23
82 #define OP_63_FRE 24
83 #define OP_63_FMUL 25
84 #define OP_63_FRSQRTE 26
85 #define OP_63_FMSUB 28
86 #define OP_63_FMADD 29
87 #define OP_63_FNMSUB 30
88 #define OP_63_FNMADD 31
89 #define OP_63_FCMPO 32
90 #define OP_63_MTFSB1 38 // XXX
91 #define OP_63_FSUB 20
92 #define OP_63_FNEG 40
93 #define OP_63_MCRFS 64
94 #define OP_63_MTFSB0 70
95 #define OP_63_FMR 72
96 #define OP_63_MTFSFI 134
97 #define OP_63_FABS 264
98 #define OP_63_MFFS 583
99 #define OP_63_MTFSF 711
100
101 #define OP_4X_PS_CMPU0 0
102 #define OP_4X_PSQ_LX 6
103 #define OP_4XW_PSQ_STX 7
104 #define OP_4A_PS_SUM0 10
105 #define OP_4A_PS_SUM1 11
106 #define OP_4A_PS_MULS0 12
107 #define OP_4A_PS_MULS1 13
108 #define OP_4A_PS_MADDS0 14
109 #define OP_4A_PS_MADDS1 15
110 #define OP_4A_PS_DIV 18
111 #define OP_4A_PS_SUB 20
112 #define OP_4A_PS_ADD 21
113 #define OP_4A_PS_SEL 23
114 #define OP_4A_PS_RES 24
115 #define OP_4A_PS_MUL 25
116 #define OP_4A_PS_RSQRTE 26
117 #define OP_4A_PS_MSUB 28
118 #define OP_4A_PS_MADD 29
119 #define OP_4A_PS_NMSUB 30
120 #define OP_4A_PS_NMADD 31
121 #define OP_4X_PS_CMPO0 32
122 #define OP_4X_PSQ_LUX 38
123 #define OP_4XW_PSQ_STUX 39
124 #define OP_4X_PS_NEG 40
125 #define OP_4X_PS_CMPU1 64
126 #define OP_4X_PS_MR 72
127 #define OP_4X_PS_CMPO1 96
128 #define OP_4X_PS_NABS 136
129 #define OP_4X_PS_ABS 264
130 #define OP_4X_PS_MERGE00 528
131 #define OP_4X_PS_MERGE01 560
132 #define OP_4X_PS_MERGE10 592
133 #define OP_4X_PS_MERGE11 624
134
135 #define SCALAR_NONE 0
136 #define SCALAR_HIGH (1 << 0)
137 #define SCALAR_LOW (1 << 1)
138 #define SCALAR_NO_PS0 (1 << 2)
139 #define SCALAR_NO_PS1 (1 << 3)
140
141 #define GQR_ST_TYPE_MASK 0x00000007
142 #define GQR_ST_TYPE_SHIFT 0
143 #define GQR_ST_SCALE_MASK 0x00003f00
144 #define GQR_ST_SCALE_SHIFT 8
145 #define GQR_LD_TYPE_MASK 0x00070000
146 #define GQR_LD_TYPE_SHIFT 16
147 #define GQR_LD_SCALE_MASK 0x3f000000
148 #define GQR_LD_SCALE_SHIFT 24
149
150 #define GQR_QUANTIZE_FLOAT 0
151 #define GQR_QUANTIZE_U8 4
152 #define GQR_QUANTIZE_U16 5
153 #define GQR_QUANTIZE_S8 6
154 #define GQR_QUANTIZE_S16 7
155
156 #define FPU_LS_SINGLE 0
157 #define FPU_LS_DOUBLE 1
158 #define FPU_LS_SINGLE_LOW 2
159
160 static inline void kvmppc_sync_qpr(struct kvm_vcpu *vcpu, int rt)
161 {
162 kvm_cvt_df(&vcpu->arch.fpr[rt], &vcpu->arch.qpr[rt], &vcpu->arch.fpscr);
163 }
164
165 static void kvmppc_inject_pf(struct kvm_vcpu *vcpu, ulong eaddr, bool is_store)
166 {
167 u64 dsisr;
168 struct kvm_vcpu_arch_shared *shared = vcpu->arch.shared;
169
170 shared->msr = kvmppc_set_field(shared->msr, 33, 36, 0);
171 shared->msr = kvmppc_set_field(shared->msr, 42, 47, 0);
172 vcpu->arch.dear = eaddr;
173 /* Page Fault */
174 dsisr = kvmppc_set_field(0, 33, 33, 1);
175 if (is_store)
176 to_book3s(vcpu)->dsisr = kvmppc_set_field(dsisr, 38, 38, 1);
177 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE);
178 }
179
180 static int kvmppc_emulate_fpr_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
181 int rs, ulong addr, int ls_type)
182 {
183 int emulated = EMULATE_FAIL;
184 int r;
185 char tmp[8];
186 int len = sizeof(u32);
187
188 if (ls_type == FPU_LS_DOUBLE)
189 len = sizeof(u64);
190
191 /* read from memory */
192 r = kvmppc_ld(vcpu, &addr, len, tmp, true);
193 vcpu->arch.paddr_accessed = addr;
194
195 if (r < 0) {
196 kvmppc_inject_pf(vcpu, addr, false);
197 goto done_load;
198 } else if (r == EMULATE_DO_MMIO) {
199 emulated = kvmppc_handle_load(run, vcpu, KVM_REG_FPR | rs, len, 1);
200 goto done_load;
201 }
202
203 emulated = EMULATE_DONE;
204
205 /* put in registers */
206 switch (ls_type) {
207 case FPU_LS_SINGLE:
208 kvm_cvt_fd((u32*)tmp, &vcpu->arch.fpr[rs], &vcpu->arch.fpscr);
209 vcpu->arch.qpr[rs] = *((u32*)tmp);
210 break;
211 case FPU_LS_DOUBLE:
212 vcpu->arch.fpr[rs] = *((u64*)tmp);
213 break;
214 }
215
216 dprintk(KERN_INFO "KVM: FPR_LD [0x%llx] at 0x%lx (%d)\n", *(u64*)tmp,
217 addr, len);
218
219 done_load:
220 return emulated;
221 }
222
223 static int kvmppc_emulate_fpr_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
224 int rs, ulong addr, int ls_type)
225 {
226 int emulated = EMULATE_FAIL;
227 int r;
228 char tmp[8];
229 u64 val;
230 int len;
231
232 switch (ls_type) {
233 case FPU_LS_SINGLE:
234 kvm_cvt_df(&vcpu->arch.fpr[rs], (u32*)tmp, &vcpu->arch.fpscr);
235 val = *((u32*)tmp);
236 len = sizeof(u32);
237 break;
238 case FPU_LS_SINGLE_LOW:
239 *((u32*)tmp) = vcpu->arch.fpr[rs];
240 val = vcpu->arch.fpr[rs] & 0xffffffff;
241 len = sizeof(u32);
242 break;
243 case FPU_LS_DOUBLE:
244 *((u64*)tmp) = vcpu->arch.fpr[rs];
245 val = vcpu->arch.fpr[rs];
246 len = sizeof(u64);
247 break;
248 default:
249 val = 0;
250 len = 0;
251 }
252
253 r = kvmppc_st(vcpu, &addr, len, tmp, true);
254 vcpu->arch.paddr_accessed = addr;
255 if (r < 0) {
256 kvmppc_inject_pf(vcpu, addr, true);
257 } else if (r == EMULATE_DO_MMIO) {
258 emulated = kvmppc_handle_store(run, vcpu, val, len, 1);
259 } else {
260 emulated = EMULATE_DONE;
261 }
262
263 dprintk(KERN_INFO "KVM: FPR_ST [0x%llx] at 0x%lx (%d)\n",
264 val, addr, len);
265
266 return emulated;
267 }
268
269 static int kvmppc_emulate_psq_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
270 int rs, ulong addr, bool w, int i)
271 {
272 int emulated = EMULATE_FAIL;
273 int r;
274 float one = 1.0;
275 u32 tmp[2];
276
277 /* read from memory */
278 if (w) {
279 r = kvmppc_ld(vcpu, &addr, sizeof(u32), tmp, true);
280 memcpy(&tmp[1], &one, sizeof(u32));
281 } else {
282 r = kvmppc_ld(vcpu, &addr, sizeof(u32) * 2, tmp, true);
283 }
284 vcpu->arch.paddr_accessed = addr;
285 if (r < 0) {
286 kvmppc_inject_pf(vcpu, addr, false);
287 goto done_load;
288 } else if ((r == EMULATE_DO_MMIO) && w) {
289 emulated = kvmppc_handle_load(run, vcpu, KVM_REG_FPR | rs, 4, 1);
290 vcpu->arch.qpr[rs] = tmp[1];
291 goto done_load;
292 } else if (r == EMULATE_DO_MMIO) {
293 emulated = kvmppc_handle_load(run, vcpu, KVM_REG_FQPR | rs, 8, 1);
294 goto done_load;
295 }
296
297 emulated = EMULATE_DONE;
298
299 /* put in registers */
300 kvm_cvt_fd(&tmp[0], &vcpu->arch.fpr[rs], &vcpu->arch.fpscr);
301 vcpu->arch.qpr[rs] = tmp[1];
302
303 dprintk(KERN_INFO "KVM: PSQ_LD [0x%x, 0x%x] at 0x%lx (%d)\n", tmp[0],
304 tmp[1], addr, w ? 4 : 8);
305
306 done_load:
307 return emulated;
308 }
309
310 static int kvmppc_emulate_psq_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
311 int rs, ulong addr, bool w, int i)
312 {
313 int emulated = EMULATE_FAIL;
314 int r;
315 u32 tmp[2];
316 int len = w ? sizeof(u32) : sizeof(u64);
317
318 kvm_cvt_df(&vcpu->arch.fpr[rs], &tmp[0], &vcpu->arch.fpscr);
319 tmp[1] = vcpu->arch.qpr[rs];
320
321 r = kvmppc_st(vcpu, &addr, len, tmp, true);
322 vcpu->arch.paddr_accessed = addr;
323 if (r < 0) {
324 kvmppc_inject_pf(vcpu, addr, true);
325 } else if ((r == EMULATE_DO_MMIO) && w) {
326 emulated = kvmppc_handle_store(run, vcpu, tmp[0], 4, 1);
327 } else if (r == EMULATE_DO_MMIO) {
328 u64 val = ((u64)tmp[0] << 32) | tmp[1];
329 emulated = kvmppc_handle_store(run, vcpu, val, 8, 1);
330 } else {
331 emulated = EMULATE_DONE;
332 }
333
334 dprintk(KERN_INFO "KVM: PSQ_ST [0x%x, 0x%x] at 0x%lx (%d)\n",
335 tmp[0], tmp[1], addr, len);
336
337 return emulated;
338 }
339
340 /*
341 * Cuts out inst bits with ordering according to spec.
342 * That means the leftmost bit is zero. All given bits are included.
343 */
344 static inline u32 inst_get_field(u32 inst, int msb, int lsb)
345 {
346 return kvmppc_get_field(inst, msb + 32, lsb + 32);
347 }
348
349 /*
350 * Replaces inst bits with ordering according to spec.
351 */
352 static inline u32 inst_set_field(u32 inst, int msb, int lsb, int value)
353 {
354 return kvmppc_set_field(inst, msb + 32, lsb + 32, value);
355 }
356
357 bool kvmppc_inst_is_paired_single(struct kvm_vcpu *vcpu, u32 inst)
358 {
359 if (!(vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE))
360 return false;
361
362 switch (get_op(inst)) {
363 case OP_PSQ_L:
364 case OP_PSQ_LU:
365 case OP_PSQ_ST:
366 case OP_PSQ_STU:
367 case OP_LFS:
368 case OP_LFSU:
369 case OP_LFD:
370 case OP_LFDU:
371 case OP_STFS:
372 case OP_STFSU:
373 case OP_STFD:
374 case OP_STFDU:
375 return true;
376 case 4:
377 /* X form */
378 switch (inst_get_field(inst, 21, 30)) {
379 case OP_4X_PS_CMPU0:
380 case OP_4X_PSQ_LX:
381 case OP_4X_PS_CMPO0:
382 case OP_4X_PSQ_LUX:
383 case OP_4X_PS_NEG:
384 case OP_4X_PS_CMPU1:
385 case OP_4X_PS_MR:
386 case OP_4X_PS_CMPO1:
387 case OP_4X_PS_NABS:
388 case OP_4X_PS_ABS:
389 case OP_4X_PS_MERGE00:
390 case OP_4X_PS_MERGE01:
391 case OP_4X_PS_MERGE10:
392 case OP_4X_PS_MERGE11:
393 return true;
394 }
395 /* XW form */
396 switch (inst_get_field(inst, 25, 30)) {
397 case OP_4XW_PSQ_STX:
398 case OP_4XW_PSQ_STUX:
399 return true;
400 }
401 /* A form */
402 switch (inst_get_field(inst, 26, 30)) {
403 case OP_4A_PS_SUM1:
404 case OP_4A_PS_SUM0:
405 case OP_4A_PS_MULS0:
406 case OP_4A_PS_MULS1:
407 case OP_4A_PS_MADDS0:
408 case OP_4A_PS_MADDS1:
409 case OP_4A_PS_DIV:
410 case OP_4A_PS_SUB:
411 case OP_4A_PS_ADD:
412 case OP_4A_PS_SEL:
413 case OP_4A_PS_RES:
414 case OP_4A_PS_MUL:
415 case OP_4A_PS_RSQRTE:
416 case OP_4A_PS_MSUB:
417 case OP_4A_PS_MADD:
418 case OP_4A_PS_NMSUB:
419 case OP_4A_PS_NMADD:
420 return true;
421 }
422 break;
423 case 59:
424 switch (inst_get_field(inst, 21, 30)) {
425 case OP_59_FADDS:
426 case OP_59_FSUBS:
427 case OP_59_FDIVS:
428 case OP_59_FRES:
429 case OP_59_FRSQRTES:
430 return true;
431 }
432 switch (inst_get_field(inst, 26, 30)) {
433 case OP_59_FMULS:
434 case OP_59_FMSUBS:
435 case OP_59_FMADDS:
436 case OP_59_FNMSUBS:
437 case OP_59_FNMADDS:
438 return true;
439 }
440 break;
441 case 63:
442 switch (inst_get_field(inst, 21, 30)) {
443 case OP_63_MTFSB0:
444 case OP_63_MTFSB1:
445 case OP_63_MTFSF:
446 case OP_63_MTFSFI:
447 case OP_63_MCRFS:
448 case OP_63_MFFS:
449 case OP_63_FCMPU:
450 case OP_63_FCMPO:
451 case OP_63_FNEG:
452 case OP_63_FMR:
453 case OP_63_FABS:
454 case OP_63_FRSP:
455 case OP_63_FDIV:
456 case OP_63_FADD:
457 case OP_63_FSUB:
458 case OP_63_FCTIW:
459 case OP_63_FCTIWZ:
460 case OP_63_FRSQRTE:
461 case OP_63_FCPSGN:
462 return true;
463 }
464 switch (inst_get_field(inst, 26, 30)) {
465 case OP_63_FMUL:
466 case OP_63_FSEL:
467 case OP_63_FMSUB:
468 case OP_63_FMADD:
469 case OP_63_FNMSUB:
470 case OP_63_FNMADD:
471 return true;
472 }
473 break;
474 case 31:
475 switch (inst_get_field(inst, 21, 30)) {
476 case OP_31_LFSX:
477 case OP_31_LFSUX:
478 case OP_31_LFDX:
479 case OP_31_LFDUX:
480 case OP_31_STFSX:
481 case OP_31_STFSUX:
482 case OP_31_STFX:
483 case OP_31_STFUX:
484 case OP_31_STFIWX:
485 return true;
486 }
487 break;
488 }
489
490 return false;
491 }
492
493 static int get_d_signext(u32 inst)
494 {
495 int d = inst & 0x8ff;
496
497 if (d & 0x800)
498 return -(d & 0x7ff);
499
500 return (d & 0x7ff);
501 }
502
503 static int kvmppc_ps_three_in(struct kvm_vcpu *vcpu, bool rc,
504 int reg_out, int reg_in1, int reg_in2,
505 int reg_in3, int scalar,
506 void (*func)(u64 *fpscr,
507 u32 *dst, u32 *src1,
508 u32 *src2, u32 *src3))
509 {
510 u32 *qpr = vcpu->arch.qpr;
511 u64 *fpr = vcpu->arch.fpr;
512 u32 ps0_out;
513 u32 ps0_in1, ps0_in2, ps0_in3;
514 u32 ps1_in1, ps1_in2, ps1_in3;
515
516 /* RC */
517 WARN_ON(rc);
518
519 /* PS0 */
520 kvm_cvt_df(&fpr[reg_in1], &ps0_in1, &vcpu->arch.fpscr);
521 kvm_cvt_df(&fpr[reg_in2], &ps0_in2, &vcpu->arch.fpscr);
522 kvm_cvt_df(&fpr[reg_in3], &ps0_in3, &vcpu->arch.fpscr);
523
524 if (scalar & SCALAR_LOW)
525 ps0_in2 = qpr[reg_in2];
526
527 func(&vcpu->arch.fpscr, &ps0_out, &ps0_in1, &ps0_in2, &ps0_in3);
528
529 dprintk(KERN_INFO "PS3 ps0 -> f(0x%x, 0x%x, 0x%x) = 0x%x\n",
530 ps0_in1, ps0_in2, ps0_in3, ps0_out);
531
532 if (!(scalar & SCALAR_NO_PS0))
533 kvm_cvt_fd(&ps0_out, &fpr[reg_out], &vcpu->arch.fpscr);
534
535 /* PS1 */
536 ps1_in1 = qpr[reg_in1];
537 ps1_in2 = qpr[reg_in2];
538 ps1_in3 = qpr[reg_in3];
539
540 if (scalar & SCALAR_HIGH)
541 ps1_in2 = ps0_in2;
542
543 if (!(scalar & SCALAR_NO_PS1))
544 func(&vcpu->arch.fpscr, &qpr[reg_out], &ps1_in1, &ps1_in2, &ps1_in3);
545
546 dprintk(KERN_INFO "PS3 ps1 -> f(0x%x, 0x%x, 0x%x) = 0x%x\n",
547 ps1_in1, ps1_in2, ps1_in3, qpr[reg_out]);
548
549 return EMULATE_DONE;
550 }
551
552 static int kvmppc_ps_two_in(struct kvm_vcpu *vcpu, bool rc,
553 int reg_out, int reg_in1, int reg_in2,
554 int scalar,
555 void (*func)(u64 *fpscr,
556 u32 *dst, u32 *src1,
557 u32 *src2))
558 {
559 u32 *qpr = vcpu->arch.qpr;
560 u64 *fpr = vcpu->arch.fpr;
561 u32 ps0_out;
562 u32 ps0_in1, ps0_in2;
563 u32 ps1_out;
564 u32 ps1_in1, ps1_in2;
565
566 /* RC */
567 WARN_ON(rc);
568
569 /* PS0 */
570 kvm_cvt_df(&fpr[reg_in1], &ps0_in1, &vcpu->arch.fpscr);
571
572 if (scalar & SCALAR_LOW)
573 ps0_in2 = qpr[reg_in2];
574 else
575 kvm_cvt_df(&fpr[reg_in2], &ps0_in2, &vcpu->arch.fpscr);
576
577 func(&vcpu->arch.fpscr, &ps0_out, &ps0_in1, &ps0_in2);
578
579 if (!(scalar & SCALAR_NO_PS0)) {
580 dprintk(KERN_INFO "PS2 ps0 -> f(0x%x, 0x%x) = 0x%x\n",
581 ps0_in1, ps0_in2, ps0_out);
582
583 kvm_cvt_fd(&ps0_out, &fpr[reg_out], &vcpu->arch.fpscr);
584 }
585
586 /* PS1 */
587 ps1_in1 = qpr[reg_in1];
588 ps1_in2 = qpr[reg_in2];
589
590 if (scalar & SCALAR_HIGH)
591 ps1_in2 = ps0_in2;
592
593 func(&vcpu->arch.fpscr, &ps1_out, &ps1_in1, &ps1_in2);
594
595 if (!(scalar & SCALAR_NO_PS1)) {
596 qpr[reg_out] = ps1_out;
597
598 dprintk(KERN_INFO "PS2 ps1 -> f(0x%x, 0x%x) = 0x%x\n",
599 ps1_in1, ps1_in2, qpr[reg_out]);
600 }
601
602 return EMULATE_DONE;
603 }
604
605 static int kvmppc_ps_one_in(struct kvm_vcpu *vcpu, bool rc,
606 int reg_out, int reg_in,
607 void (*func)(u64 *t,
608 u32 *dst, u32 *src1))
609 {
610 u32 *qpr = vcpu->arch.qpr;
611 u64 *fpr = vcpu->arch.fpr;
612 u32 ps0_out, ps0_in;
613 u32 ps1_in;
614
615 /* RC */
616 WARN_ON(rc);
617
618 /* PS0 */
619 kvm_cvt_df(&fpr[reg_in], &ps0_in, &vcpu->arch.fpscr);
620 func(&vcpu->arch.fpscr, &ps0_out, &ps0_in);
621
622 dprintk(KERN_INFO "PS1 ps0 -> f(0x%x) = 0x%x\n",
623 ps0_in, ps0_out);
624
625 kvm_cvt_fd(&ps0_out, &fpr[reg_out], &vcpu->arch.fpscr);
626
627 /* PS1 */
628 ps1_in = qpr[reg_in];
629 func(&vcpu->arch.fpscr, &qpr[reg_out], &ps1_in);
630
631 dprintk(KERN_INFO "PS1 ps1 -> f(0x%x) = 0x%x\n",
632 ps1_in, qpr[reg_out]);
633
634 return EMULATE_DONE;
635 }
636
637 int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
638 {
639 u32 inst = kvmppc_get_last_inst(vcpu);
640 enum emulation_result emulated = EMULATE_DONE;
641
642 int ax_rd = inst_get_field(inst, 6, 10);
643 int ax_ra = inst_get_field(inst, 11, 15);
644 int ax_rb = inst_get_field(inst, 16, 20);
645 int ax_rc = inst_get_field(inst, 21, 25);
646 short full_d = inst_get_field(inst, 16, 31);
647
648 u64 *fpr_d = &vcpu->arch.fpr[ax_rd];
649 u64 *fpr_a = &vcpu->arch.fpr[ax_ra];
650 u64 *fpr_b = &vcpu->arch.fpr[ax_rb];
651 u64 *fpr_c = &vcpu->arch.fpr[ax_rc];
652
653 bool rcomp = (inst & 1) ? true : false;
654 u32 cr = kvmppc_get_cr(vcpu);
655 #ifdef DEBUG
656 int i;
657 #endif
658
659 if (!kvmppc_inst_is_paired_single(vcpu, inst))
660 return EMULATE_FAIL;
661
662 if (!(vcpu->arch.shared->msr & MSR_FP)) {
663 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL);
664 return EMULATE_AGAIN;
665 }
666
667 kvmppc_giveup_ext(vcpu, MSR_FP);
668 preempt_disable();
669 enable_kernel_fp();
670 /* Do we need to clear FE0 / FE1 here? Don't think so. */
671
672 #ifdef DEBUG
673 for (i = 0; i < ARRAY_SIZE(vcpu->arch.fpr); i++) {
674 u32 f;
675 kvm_cvt_df(&vcpu->arch.fpr[i], &f, &vcpu->arch.fpscr);
676 dprintk(KERN_INFO "FPR[%d] = 0x%x / 0x%llx QPR[%d] = 0x%x\n",
677 i, f, vcpu->arch.fpr[i], i, vcpu->arch.qpr[i]);
678 }
679 #endif
680
681 switch (get_op(inst)) {
682 case OP_PSQ_L:
683 {
684 ulong addr = ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0;
685 bool w = inst_get_field(inst, 16, 16) ? true : false;
686 int i = inst_get_field(inst, 17, 19);
687
688 addr += get_d_signext(inst);
689 emulated = kvmppc_emulate_psq_load(run, vcpu, ax_rd, addr, w, i);
690 break;
691 }
692 case OP_PSQ_LU:
693 {
694 ulong addr = kvmppc_get_gpr(vcpu, ax_ra);
695 bool w = inst_get_field(inst, 16, 16) ? true : false;
696 int i = inst_get_field(inst, 17, 19);
697
698 addr += get_d_signext(inst);
699 emulated = kvmppc_emulate_psq_load(run, vcpu, ax_rd, addr, w, i);
700
701 if (emulated == EMULATE_DONE)
702 kvmppc_set_gpr(vcpu, ax_ra, addr);
703 break;
704 }
705 case OP_PSQ_ST:
706 {
707 ulong addr = ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0;
708 bool w = inst_get_field(inst, 16, 16) ? true : false;
709 int i = inst_get_field(inst, 17, 19);
710
711 addr += get_d_signext(inst);
712 emulated = kvmppc_emulate_psq_store(run, vcpu, ax_rd, addr, w, i);
713 break;
714 }
715 case OP_PSQ_STU:
716 {
717 ulong addr = kvmppc_get_gpr(vcpu, ax_ra);
718 bool w = inst_get_field(inst, 16, 16) ? true : false;
719 int i = inst_get_field(inst, 17, 19);
720
721 addr += get_d_signext(inst);
722 emulated = kvmppc_emulate_psq_store(run, vcpu, ax_rd, addr, w, i);
723
724 if (emulated == EMULATE_DONE)
725 kvmppc_set_gpr(vcpu, ax_ra, addr);
726 break;
727 }
728 case 4:
729 /* X form */
730 switch (inst_get_field(inst, 21, 30)) {
731 case OP_4X_PS_CMPU0:
732 /* XXX */
733 emulated = EMULATE_FAIL;
734 break;
735 case OP_4X_PSQ_LX:
736 {
737 ulong addr = ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0;
738 bool w = inst_get_field(inst, 21, 21) ? true : false;
739 int i = inst_get_field(inst, 22, 24);
740
741 addr += kvmppc_get_gpr(vcpu, ax_rb);
742 emulated = kvmppc_emulate_psq_load(run, vcpu, ax_rd, addr, w, i);
743 break;
744 }
745 case OP_4X_PS_CMPO0:
746 /* XXX */
747 emulated = EMULATE_FAIL;
748 break;
749 case OP_4X_PSQ_LUX:
750 {
751 ulong addr = kvmppc_get_gpr(vcpu, ax_ra);
752 bool w = inst_get_field(inst, 21, 21) ? true : false;
753 int i = inst_get_field(inst, 22, 24);
754
755 addr += kvmppc_get_gpr(vcpu, ax_rb);
756 emulated = kvmppc_emulate_psq_load(run, vcpu, ax_rd, addr, w, i);
757
758 if (emulated == EMULATE_DONE)
759 kvmppc_set_gpr(vcpu, ax_ra, addr);
760 break;
761 }
762 case OP_4X_PS_NEG:
763 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_rb];
764 vcpu->arch.fpr[ax_rd] ^= 0x8000000000000000ULL;
765 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rb];
766 vcpu->arch.qpr[ax_rd] ^= 0x80000000;
767 break;
768 case OP_4X_PS_CMPU1:
769 /* XXX */
770 emulated = EMULATE_FAIL;
771 break;
772 case OP_4X_PS_MR:
773 WARN_ON(rcomp);
774 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_rb];
775 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rb];
776 break;
777 case OP_4X_PS_CMPO1:
778 /* XXX */
779 emulated = EMULATE_FAIL;
780 break;
781 case OP_4X_PS_NABS:
782 WARN_ON(rcomp);
783 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_rb];
784 vcpu->arch.fpr[ax_rd] |= 0x8000000000000000ULL;
785 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rb];
786 vcpu->arch.qpr[ax_rd] |= 0x80000000;
787 break;
788 case OP_4X_PS_ABS:
789 WARN_ON(rcomp);
790 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_rb];
791 vcpu->arch.fpr[ax_rd] &= ~0x8000000000000000ULL;
792 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rb];
793 vcpu->arch.qpr[ax_rd] &= ~0x80000000;
794 break;
795 case OP_4X_PS_MERGE00:
796 WARN_ON(rcomp);
797 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_ra];
798 /* vcpu->arch.qpr[ax_rd] = vcpu->arch.fpr[ax_rb]; */
799 kvm_cvt_df(&vcpu->arch.fpr[ax_rb],
800 &vcpu->arch.qpr[ax_rd],
801 &vcpu->arch.fpscr);
802 break;
803 case OP_4X_PS_MERGE01:
804 WARN_ON(rcomp);
805 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_ra];
806 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rb];
807 break;
808 case OP_4X_PS_MERGE10:
809 WARN_ON(rcomp);
810 /* vcpu->arch.fpr[ax_rd] = vcpu->arch.qpr[ax_ra]; */
811 kvm_cvt_fd(&vcpu->arch.qpr[ax_ra],
812 &vcpu->arch.fpr[ax_rd],
813 &vcpu->arch.fpscr);
814 /* vcpu->arch.qpr[ax_rd] = vcpu->arch.fpr[ax_rb]; */
815 kvm_cvt_df(&vcpu->arch.fpr[ax_rb],
816 &vcpu->arch.qpr[ax_rd],
817 &vcpu->arch.fpscr);
818 break;
819 case OP_4X_PS_MERGE11:
820 WARN_ON(rcomp);
821 /* vcpu->arch.fpr[ax_rd] = vcpu->arch.qpr[ax_ra]; */
822 kvm_cvt_fd(&vcpu->arch.qpr[ax_ra],
823 &vcpu->arch.fpr[ax_rd],
824 &vcpu->arch.fpscr);
825 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rb];
826 break;
827 }
828 /* XW form */
829 switch (inst_get_field(inst, 25, 30)) {
830 case OP_4XW_PSQ_STX:
831 {
832 ulong addr = ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0;
833 bool w = inst_get_field(inst, 21, 21) ? true : false;
834 int i = inst_get_field(inst, 22, 24);
835
836 addr += kvmppc_get_gpr(vcpu, ax_rb);
837 emulated = kvmppc_emulate_psq_store(run, vcpu, ax_rd, addr, w, i);
838 break;
839 }
840 case OP_4XW_PSQ_STUX:
841 {
842 ulong addr = kvmppc_get_gpr(vcpu, ax_ra);
843 bool w = inst_get_field(inst, 21, 21) ? true : false;
844 int i = inst_get_field(inst, 22, 24);
845
846 addr += kvmppc_get_gpr(vcpu, ax_rb);
847 emulated = kvmppc_emulate_psq_store(run, vcpu, ax_rd, addr, w, i);
848
849 if (emulated == EMULATE_DONE)
850 kvmppc_set_gpr(vcpu, ax_ra, addr);
851 break;
852 }
853 }
854 /* A form */
855 switch (inst_get_field(inst, 26, 30)) {
856 case OP_4A_PS_SUM1:
857 emulated = kvmppc_ps_two_in(vcpu, rcomp, ax_rd,
858 ax_rb, ax_ra, SCALAR_NO_PS0 | SCALAR_HIGH, fps_fadds);
859 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_rc];
860 break;
861 case OP_4A_PS_SUM0:
862 emulated = kvmppc_ps_two_in(vcpu, rcomp, ax_rd,
863 ax_ra, ax_rb, SCALAR_NO_PS1 | SCALAR_LOW, fps_fadds);
864 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rc];
865 break;
866 case OP_4A_PS_MULS0:
867 emulated = kvmppc_ps_two_in(vcpu, rcomp, ax_rd,
868 ax_ra, ax_rc, SCALAR_HIGH, fps_fmuls);
869 break;
870 case OP_4A_PS_MULS1:
871 emulated = kvmppc_ps_two_in(vcpu, rcomp, ax_rd,
872 ax_ra, ax_rc, SCALAR_LOW, fps_fmuls);
873 break;
874 case OP_4A_PS_MADDS0:
875 emulated = kvmppc_ps_three_in(vcpu, rcomp, ax_rd,
876 ax_ra, ax_rc, ax_rb, SCALAR_HIGH, fps_fmadds);
877 break;
878 case OP_4A_PS_MADDS1:
879 emulated = kvmppc_ps_three_in(vcpu, rcomp, ax_rd,
880 ax_ra, ax_rc, ax_rb, SCALAR_LOW, fps_fmadds);
881 break;
882 case OP_4A_PS_DIV:
883 emulated = kvmppc_ps_two_in(vcpu, rcomp, ax_rd,
884 ax_ra, ax_rb, SCALAR_NONE, fps_fdivs);
885 break;
886 case OP_4A_PS_SUB:
887 emulated = kvmppc_ps_two_in(vcpu, rcomp, ax_rd,
888 ax_ra, ax_rb, SCALAR_NONE, fps_fsubs);
889 break;
890 case OP_4A_PS_ADD:
891 emulated = kvmppc_ps_two_in(vcpu, rcomp, ax_rd,
892 ax_ra, ax_rb, SCALAR_NONE, fps_fadds);
893 break;
894 case OP_4A_PS_SEL:
895 emulated = kvmppc_ps_three_in(vcpu, rcomp, ax_rd,
896 ax_ra, ax_rc, ax_rb, SCALAR_NONE, fps_fsel);
897 break;
898 case OP_4A_PS_RES:
899 emulated = kvmppc_ps_one_in(vcpu, rcomp, ax_rd,
900 ax_rb, fps_fres);
901 break;
902 case OP_4A_PS_MUL:
903 emulated = kvmppc_ps_two_in(vcpu, rcomp, ax_rd,
904 ax_ra, ax_rc, SCALAR_NONE, fps_fmuls);
905 break;
906 case OP_4A_PS_RSQRTE:
907 emulated = kvmppc_ps_one_in(vcpu, rcomp, ax_rd,
908 ax_rb, fps_frsqrte);
909 break;
910 case OP_4A_PS_MSUB:
911 emulated = kvmppc_ps_three_in(vcpu, rcomp, ax_rd,
912 ax_ra, ax_rc, ax_rb, SCALAR_NONE, fps_fmsubs);
913 break;
914 case OP_4A_PS_MADD:
915 emulated = kvmppc_ps_three_in(vcpu, rcomp, ax_rd,
916 ax_ra, ax_rc, ax_rb, SCALAR_NONE, fps_fmadds);
917 break;
918 case OP_4A_PS_NMSUB:
919 emulated = kvmppc_ps_three_in(vcpu, rcomp, ax_rd,
920 ax_ra, ax_rc, ax_rb, SCALAR_NONE, fps_fnmsubs);
921 break;
922 case OP_4A_PS_NMADD:
923 emulated = kvmppc_ps_three_in(vcpu, rcomp, ax_rd,
924 ax_ra, ax_rc, ax_rb, SCALAR_NONE, fps_fnmadds);
925 break;
926 }
927 break;
928
929 /* Real FPU operations */
930
931 case OP_LFS:
932 {
933 ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) + full_d;
934
935 emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd, addr,
936 FPU_LS_SINGLE);
937 break;
938 }
939 case OP_LFSU:
940 {
941 ulong addr = kvmppc_get_gpr(vcpu, ax_ra) + full_d;
942
943 emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd, addr,
944 FPU_LS_SINGLE);
945
946 if (emulated == EMULATE_DONE)
947 kvmppc_set_gpr(vcpu, ax_ra, addr);
948 break;
949 }
950 case OP_LFD:
951 {
952 ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) + full_d;
953
954 emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd, addr,
955 FPU_LS_DOUBLE);
956 break;
957 }
958 case OP_LFDU:
959 {
960 ulong addr = kvmppc_get_gpr(vcpu, ax_ra) + full_d;
961
962 emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd, addr,
963 FPU_LS_DOUBLE);
964
965 if (emulated == EMULATE_DONE)
966 kvmppc_set_gpr(vcpu, ax_ra, addr);
967 break;
968 }
969 case OP_STFS:
970 {
971 ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) + full_d;
972
973 emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd, addr,
974 FPU_LS_SINGLE);
975 break;
976 }
977 case OP_STFSU:
978 {
979 ulong addr = kvmppc_get_gpr(vcpu, ax_ra) + full_d;
980
981 emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd, addr,
982 FPU_LS_SINGLE);
983
984 if (emulated == EMULATE_DONE)
985 kvmppc_set_gpr(vcpu, ax_ra, addr);
986 break;
987 }
988 case OP_STFD:
989 {
990 ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) + full_d;
991
992 emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd, addr,
993 FPU_LS_DOUBLE);
994 break;
995 }
996 case OP_STFDU:
997 {
998 ulong addr = kvmppc_get_gpr(vcpu, ax_ra) + full_d;
999
1000 emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd, addr,
1001 FPU_LS_DOUBLE);
1002
1003 if (emulated == EMULATE_DONE)
1004 kvmppc_set_gpr(vcpu, ax_ra, addr);
1005 break;
1006 }
1007 case 31:
1008 switch (inst_get_field(inst, 21, 30)) {
1009 case OP_31_LFSX:
1010 {
1011 ulong addr = ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0;
1012
1013 addr += kvmppc_get_gpr(vcpu, ax_rb);
1014 emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd,
1015 addr, FPU_LS_SINGLE);
1016 break;
1017 }
1018 case OP_31_LFSUX:
1019 {
1020 ulong addr = kvmppc_get_gpr(vcpu, ax_ra) +
1021 kvmppc_get_gpr(vcpu, ax_rb);
1022
1023 emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd,
1024 addr, FPU_LS_SINGLE);
1025
1026 if (emulated == EMULATE_DONE)
1027 kvmppc_set_gpr(vcpu, ax_ra, addr);
1028 break;
1029 }
1030 case OP_31_LFDX:
1031 {
1032 ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) +
1033 kvmppc_get_gpr(vcpu, ax_rb);
1034
1035 emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd,
1036 addr, FPU_LS_DOUBLE);
1037 break;
1038 }
1039 case OP_31_LFDUX:
1040 {
1041 ulong addr = kvmppc_get_gpr(vcpu, ax_ra) +
1042 kvmppc_get_gpr(vcpu, ax_rb);
1043
1044 emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd,
1045 addr, FPU_LS_DOUBLE);
1046
1047 if (emulated == EMULATE_DONE)
1048 kvmppc_set_gpr(vcpu, ax_ra, addr);
1049 break;
1050 }
1051 case OP_31_STFSX:
1052 {
1053 ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) +
1054 kvmppc_get_gpr(vcpu, ax_rb);
1055
1056 emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd,
1057 addr, FPU_LS_SINGLE);
1058 break;
1059 }
1060 case OP_31_STFSUX:
1061 {
1062 ulong addr = kvmppc_get_gpr(vcpu, ax_ra) +
1063 kvmppc_get_gpr(vcpu, ax_rb);
1064
1065 emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd,
1066 addr, FPU_LS_SINGLE);
1067
1068 if (emulated == EMULATE_DONE)
1069 kvmppc_set_gpr(vcpu, ax_ra, addr);
1070 break;
1071 }
1072 case OP_31_STFX:
1073 {
1074 ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) +
1075 kvmppc_get_gpr(vcpu, ax_rb);
1076
1077 emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd,
1078 addr, FPU_LS_DOUBLE);
1079 break;
1080 }
1081 case OP_31_STFUX:
1082 {
1083 ulong addr = kvmppc_get_gpr(vcpu, ax_ra) +
1084 kvmppc_get_gpr(vcpu, ax_rb);
1085
1086 emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd,
1087 addr, FPU_LS_DOUBLE);
1088
1089 if (emulated == EMULATE_DONE)
1090 kvmppc_set_gpr(vcpu, ax_ra, addr);
1091 break;
1092 }
1093 case OP_31_STFIWX:
1094 {
1095 ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) +
1096 kvmppc_get_gpr(vcpu, ax_rb);
1097
1098 emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd,
1099 addr,
1100 FPU_LS_SINGLE_LOW);
1101 break;
1102 }
1103 break;
1104 }
1105 break;
1106 case 59:
1107 switch (inst_get_field(inst, 21, 30)) {
1108 case OP_59_FADDS:
1109 fpd_fadds(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_b);
1110 kvmppc_sync_qpr(vcpu, ax_rd);
1111 break;
1112 case OP_59_FSUBS:
1113 fpd_fsubs(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_b);
1114 kvmppc_sync_qpr(vcpu, ax_rd);
1115 break;
1116 case OP_59_FDIVS:
1117 fpd_fdivs(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_b);
1118 kvmppc_sync_qpr(vcpu, ax_rd);
1119 break;
1120 case OP_59_FRES:
1121 fpd_fres(&vcpu->arch.fpscr, &cr, fpr_d, fpr_b);
1122 kvmppc_sync_qpr(vcpu, ax_rd);
1123 break;
1124 case OP_59_FRSQRTES:
1125 fpd_frsqrtes(&vcpu->arch.fpscr, &cr, fpr_d, fpr_b);
1126 kvmppc_sync_qpr(vcpu, ax_rd);
1127 break;
1128 }
1129 switch (inst_get_field(inst, 26, 30)) {
1130 case OP_59_FMULS:
1131 fpd_fmuls(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c);
1132 kvmppc_sync_qpr(vcpu, ax_rd);
1133 break;
1134 case OP_59_FMSUBS:
1135 fpd_fmsubs(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1136 kvmppc_sync_qpr(vcpu, ax_rd);
1137 break;
1138 case OP_59_FMADDS:
1139 fpd_fmadds(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1140 kvmppc_sync_qpr(vcpu, ax_rd);
1141 break;
1142 case OP_59_FNMSUBS:
1143 fpd_fnmsubs(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1144 kvmppc_sync_qpr(vcpu, ax_rd);
1145 break;
1146 case OP_59_FNMADDS:
1147 fpd_fnmadds(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1148 kvmppc_sync_qpr(vcpu, ax_rd);
1149 break;
1150 }
1151 break;
1152 case 63:
1153 switch (inst_get_field(inst, 21, 30)) {
1154 case OP_63_MTFSB0:
1155 case OP_63_MTFSB1:
1156 case OP_63_MCRFS:
1157 case OP_63_MTFSFI:
1158 /* XXX need to implement */
1159 break;
1160 case OP_63_MFFS:
1161 /* XXX missing CR */
1162 *fpr_d = vcpu->arch.fpscr;
1163 break;
1164 case OP_63_MTFSF:
1165 /* XXX missing fm bits */
1166 /* XXX missing CR */
1167 vcpu->arch.fpscr = *fpr_b;
1168 break;
1169 case OP_63_FCMPU:
1170 {
1171 u32 tmp_cr;
1172 u32 cr0_mask = 0xf0000000;
1173 u32 cr_shift = inst_get_field(inst, 6, 8) * 4;
1174
1175 fpd_fcmpu(&vcpu->arch.fpscr, &tmp_cr, fpr_a, fpr_b);
1176 cr &= ~(cr0_mask >> cr_shift);
1177 cr |= (cr & cr0_mask) >> cr_shift;
1178 break;
1179 }
1180 case OP_63_FCMPO:
1181 {
1182 u32 tmp_cr;
1183 u32 cr0_mask = 0xf0000000;
1184 u32 cr_shift = inst_get_field(inst, 6, 8) * 4;
1185
1186 fpd_fcmpo(&vcpu->arch.fpscr, &tmp_cr, fpr_a, fpr_b);
1187 cr &= ~(cr0_mask >> cr_shift);
1188 cr |= (cr & cr0_mask) >> cr_shift;
1189 break;
1190 }
1191 case OP_63_FNEG:
1192 fpd_fneg(&vcpu->arch.fpscr, &cr, fpr_d, fpr_b);
1193 break;
1194 case OP_63_FMR:
1195 *fpr_d = *fpr_b;
1196 break;
1197 case OP_63_FABS:
1198 fpd_fabs(&vcpu->arch.fpscr, &cr, fpr_d, fpr_b);
1199 break;
1200 case OP_63_FCPSGN:
1201 fpd_fcpsgn(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_b);
1202 break;
1203 case OP_63_FDIV:
1204 fpd_fdiv(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_b);
1205 break;
1206 case OP_63_FADD:
1207 fpd_fadd(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_b);
1208 break;
1209 case OP_63_FSUB:
1210 fpd_fsub(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_b);
1211 break;
1212 case OP_63_FCTIW:
1213 fpd_fctiw(&vcpu->arch.fpscr, &cr, fpr_d, fpr_b);
1214 break;
1215 case OP_63_FCTIWZ:
1216 fpd_fctiwz(&vcpu->arch.fpscr, &cr, fpr_d, fpr_b);
1217 break;
1218 case OP_63_FRSP:
1219 fpd_frsp(&vcpu->arch.fpscr, &cr, fpr_d, fpr_b);
1220 kvmppc_sync_qpr(vcpu, ax_rd);
1221 break;
1222 case OP_63_FRSQRTE:
1223 {
1224 double one = 1.0f;
1225
1226 /* fD = sqrt(fB) */
1227 fpd_fsqrt(&vcpu->arch.fpscr, &cr, fpr_d, fpr_b);
1228 /* fD = 1.0f / fD */
1229 fpd_fdiv(&vcpu->arch.fpscr, &cr, fpr_d, (u64*)&one, fpr_d);
1230 break;
1231 }
1232 }
1233 switch (inst_get_field(inst, 26, 30)) {
1234 case OP_63_FMUL:
1235 fpd_fmul(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c);
1236 break;
1237 case OP_63_FSEL:
1238 fpd_fsel(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1239 break;
1240 case OP_63_FMSUB:
1241 fpd_fmsub(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1242 break;
1243 case OP_63_FMADD:
1244 fpd_fmadd(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1245 break;
1246 case OP_63_FNMSUB:
1247 fpd_fnmsub(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1248 break;
1249 case OP_63_FNMADD:
1250 fpd_fnmadd(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1251 break;
1252 }
1253 break;
1254 }
1255
1256 #ifdef DEBUG
1257 for (i = 0; i < ARRAY_SIZE(vcpu->arch.fpr); i++) {
1258 u32 f;
1259 kvm_cvt_df(&vcpu->arch.fpr[i], &f, &vcpu->arch.fpscr);
1260 dprintk(KERN_INFO "FPR[%d] = 0x%x\n", i, f);
1261 }
1262 #endif
1263
1264 if (rcomp)
1265 kvmppc_set_cr(vcpu, cr);
1266
1267 preempt_enable();
1268
1269 return emulated;
1270 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree