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Merge tag 'trace-3.8-rc3-regression-fix' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / arch / powerpc / kvm / book3s_paired_singles.c
bloba59a25a1321843ff5fe72caf385b80aba0302f95
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 <asm/switch_to.h>
28 #include <linux/vmalloc.h>
29
30 /* #define DEBUG */
31
32 #ifdef DEBUG
33 #define dprintk printk
34 #else
35 #define dprintk(...) do { } while(0);
36 #endif
37
38 #define OP_LFS 48
39 #define OP_LFSU 49
40 #define OP_LFD 50
41 #define OP_LFDU 51
42 #define OP_STFS 52
43 #define OP_STFSU 53
44 #define OP_STFD 54
45 #define OP_STFDU 55
46 #define OP_PSQ_L 56
47 #define OP_PSQ_LU 57
48 #define OP_PSQ_ST 60
49 #define OP_PSQ_STU 61
50
51 #define OP_31_LFSX 535
52 #define OP_31_LFSUX 567
53 #define OP_31_LFDX 599
54 #define OP_31_LFDUX 631
55 #define OP_31_STFSX 663
56 #define OP_31_STFSUX 695
57 #define OP_31_STFX 727
58 #define OP_31_STFUX 759
59 #define OP_31_LWIZX 887
60 #define OP_31_STFIWX 983
61
62 #define OP_59_FADDS 21
63 #define OP_59_FSUBS 20
64 #define OP_59_FSQRTS 22
65 #define OP_59_FDIVS 18
66 #define OP_59_FRES 24
67 #define OP_59_FMULS 25
68 #define OP_59_FRSQRTES 26
69 #define OP_59_FMSUBS 28
70 #define OP_59_FMADDS 29
71 #define OP_59_FNMSUBS 30
72 #define OP_59_FNMADDS 31
73
74 #define OP_63_FCMPU 0
75 #define OP_63_FCPSGN 8
76 #define OP_63_FRSP 12
77 #define OP_63_FCTIW 14
78 #define OP_63_FCTIWZ 15
79 #define OP_63_FDIV 18
80 #define OP_63_FADD 21
81 #define OP_63_FSQRT 22
82 #define OP_63_FSEL 23
83 #define OP_63_FRE 24
84 #define OP_63_FMUL 25
85 #define OP_63_FRSQRTE 26
86 #define OP_63_FMSUB 28
87 #define OP_63_FMADD 29
88 #define OP_63_FNMSUB 30
89 #define OP_63_FNMADD 31
90 #define OP_63_FCMPO 32
91 #define OP_63_MTFSB1 38 // XXX
92 #define OP_63_FSUB 20
93 #define OP_63_FNEG 40
94 #define OP_63_MCRFS 64
95 #define OP_63_MTFSB0 70
96 #define OP_63_FMR 72
97 #define OP_63_MTFSFI 134
98 #define OP_63_FABS 264
99 #define OP_63_MFFS 583
100 #define OP_63_MTFSF 711
101
102 #define OP_4X_PS_CMPU0 0
103 #define OP_4X_PSQ_LX 6
104 #define OP_4XW_PSQ_STX 7
105 #define OP_4A_PS_SUM0 10
106 #define OP_4A_PS_SUM1 11
107 #define OP_4A_PS_MULS0 12
108 #define OP_4A_PS_MULS1 13
109 #define OP_4A_PS_MADDS0 14
110 #define OP_4A_PS_MADDS1 15
111 #define OP_4A_PS_DIV 18
112 #define OP_4A_PS_SUB 20
113 #define OP_4A_PS_ADD 21
114 #define OP_4A_PS_SEL 23
115 #define OP_4A_PS_RES 24
116 #define OP_4A_PS_MUL 25
117 #define OP_4A_PS_RSQRTE 26
118 #define OP_4A_PS_MSUB 28
119 #define OP_4A_PS_MADD 29
120 #define OP_4A_PS_NMSUB 30
121 #define OP_4A_PS_NMADD 31
122 #define OP_4X_PS_CMPO0 32
123 #define OP_4X_PSQ_LUX 38
124 #define OP_4XW_PSQ_STUX 39
125 #define OP_4X_PS_NEG 40
126 #define OP_4X_PS_CMPU1 64
127 #define OP_4X_PS_MR 72
128 #define OP_4X_PS_CMPO1 96
129 #define OP_4X_PS_NABS 136
130 #define OP_4X_PS_ABS 264
131 #define OP_4X_PS_MERGE00 528
132 #define OP_4X_PS_MERGE01 560
133 #define OP_4X_PS_MERGE10 592
134 #define OP_4X_PS_MERGE11 624
135
136 #define SCALAR_NONE 0
137 #define SCALAR_HIGH (1 << 0)
138 #define SCALAR_LOW (1 << 1)
139 #define SCALAR_NO_PS0 (1 << 2)
140 #define SCALAR_NO_PS1 (1 << 3)
141
142 #define GQR_ST_TYPE_MASK 0x00000007
143 #define GQR_ST_TYPE_SHIFT 0
144 #define GQR_ST_SCALE_MASK 0x00003f00
145 #define GQR_ST_SCALE_SHIFT 8
146 #define GQR_LD_TYPE_MASK 0x00070000
147 #define GQR_LD_TYPE_SHIFT 16
148 #define GQR_LD_SCALE_MASK 0x3f000000
149 #define GQR_LD_SCALE_SHIFT 24
150
151 #define GQR_QUANTIZE_FLOAT 0
152 #define GQR_QUANTIZE_U8 4
153 #define GQR_QUANTIZE_U16 5
154 #define GQR_QUANTIZE_S8 6
155 #define GQR_QUANTIZE_S16 7
156
157 #define FPU_LS_SINGLE 0
158 #define FPU_LS_DOUBLE 1
159 #define FPU_LS_SINGLE_LOW 2
160
161 static inline void kvmppc_sync_qpr(struct kvm_vcpu *vcpu, int rt)
162 {
163 kvm_cvt_df(&vcpu->arch.fpr[rt], &vcpu->arch.qpr[rt]);
164 }
165
166 static void kvmppc_inject_pf(struct kvm_vcpu *vcpu, ulong eaddr, bool is_store)
167 {
168 u64 dsisr;
169 struct kvm_vcpu_arch_shared *shared = vcpu->arch.shared;
170
171 shared->msr = kvmppc_set_field(shared->msr, 33, 36, 0);
172 shared->msr = kvmppc_set_field(shared->msr, 42, 47, 0);
173 shared->dar = eaddr;
174 /* Page Fault */
175 dsisr = kvmppc_set_field(0, 33, 33, 1);
176 if (is_store)
177 shared->dsisr = kvmppc_set_field(dsisr, 38, 38, 1);
178 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE);
179 }
180
181 static int kvmppc_emulate_fpr_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
182 int rs, ulong addr, int ls_type)
183 {
184 int emulated = EMULATE_FAIL;
185 int r;
186 char tmp[8];
187 int len = sizeof(u32);
188
189 if (ls_type == FPU_LS_DOUBLE)
190 len = sizeof(u64);
191
192 /* read from memory */
193 r = kvmppc_ld(vcpu, &addr, len, tmp, true);
194 vcpu->arch.paddr_accessed = addr;
195
196 if (r < 0) {
197 kvmppc_inject_pf(vcpu, addr, false);
198 goto done_load;
199 } else if (r == EMULATE_DO_MMIO) {
200 emulated = kvmppc_handle_load(run, vcpu, KVM_MMIO_REG_FPR | rs,
201 len, 1);
202 goto done_load;
203 }
204
205 emulated = EMULATE_DONE;
206
207 /* put in registers */
208 switch (ls_type) {
209 case FPU_LS_SINGLE:
210 kvm_cvt_fd((u32*)tmp, &vcpu->arch.fpr[rs]);
211 vcpu->arch.qpr[rs] = *((u32*)tmp);
212 break;
213 case FPU_LS_DOUBLE:
214 vcpu->arch.fpr[rs] = *((u64*)tmp);
215 break;
216 }
217
218 dprintk(KERN_INFO "KVM: FPR_LD [0x%llx] at 0x%lx (%d)\n", *(u64*)tmp,
219 addr, len);
220
221 done_load:
222 return emulated;
223 }
224
225 static int kvmppc_emulate_fpr_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
226 int rs, ulong addr, int ls_type)
227 {
228 int emulated = EMULATE_FAIL;
229 int r;
230 char tmp[8];
231 u64 val;
232 int len;
233
234 switch (ls_type) {
235 case FPU_LS_SINGLE:
236 kvm_cvt_df(&vcpu->arch.fpr[rs], (u32*)tmp);
237 val = *((u32*)tmp);
238 len = sizeof(u32);
239 break;
240 case FPU_LS_SINGLE_LOW:
241 *((u32*)tmp) = vcpu->arch.fpr[rs];
242 val = vcpu->arch.fpr[rs] & 0xffffffff;
243 len = sizeof(u32);
244 break;
245 case FPU_LS_DOUBLE:
246 *((u64*)tmp) = vcpu->arch.fpr[rs];
247 val = vcpu->arch.fpr[rs];
248 len = sizeof(u64);
249 break;
250 default:
251 val = 0;
252 len = 0;
253 }
254
255 r = kvmppc_st(vcpu, &addr, len, tmp, true);
256 vcpu->arch.paddr_accessed = addr;
257 if (r < 0) {
258 kvmppc_inject_pf(vcpu, addr, true);
259 } else if (r == EMULATE_DO_MMIO) {
260 emulated = kvmppc_handle_store(run, vcpu, val, len, 1);
261 } else {
262 emulated = EMULATE_DONE;
263 }
264
265 dprintk(KERN_INFO "KVM: FPR_ST [0x%llx] at 0x%lx (%d)\n",
266 val, addr, len);
267
268 return emulated;
269 }
270
271 static int kvmppc_emulate_psq_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
272 int rs, ulong addr, bool w, int i)
273 {
274 int emulated = EMULATE_FAIL;
275 int r;
276 float one = 1.0;
277 u32 tmp[2];
278
279 /* read from memory */
280 if (w) {
281 r = kvmppc_ld(vcpu, &addr, sizeof(u32), tmp, true);
282 memcpy(&tmp[1], &one, sizeof(u32));
283 } else {
284 r = kvmppc_ld(vcpu, &addr, sizeof(u32) * 2, tmp, true);
285 }
286 vcpu->arch.paddr_accessed = addr;
287 if (r < 0) {
288 kvmppc_inject_pf(vcpu, addr, false);
289 goto done_load;
290 } else if ((r == EMULATE_DO_MMIO) && w) {
291 emulated = kvmppc_handle_load(run, vcpu, KVM_MMIO_REG_FPR | rs,
292 4, 1);
293 vcpu->arch.qpr[rs] = tmp[1];
294 goto done_load;
295 } else if (r == EMULATE_DO_MMIO) {
296 emulated = kvmppc_handle_load(run, vcpu, KVM_MMIO_REG_FQPR | rs,
297 8, 1);
298 goto done_load;
299 }
300
301 emulated = EMULATE_DONE;
302
303 /* put in registers */
304 kvm_cvt_fd(&tmp[0], &vcpu->arch.fpr[rs]);
305 vcpu->arch.qpr[rs] = tmp[1];
306
307 dprintk(KERN_INFO "KVM: PSQ_LD [0x%x, 0x%x] at 0x%lx (%d)\n", tmp[0],
308 tmp[1], addr, w ? 4 : 8);
309
310 done_load:
311 return emulated;
312 }
313
314 static int kvmppc_emulate_psq_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
315 int rs, ulong addr, bool w, int i)
316 {
317 int emulated = EMULATE_FAIL;
318 int r;
319 u32 tmp[2];
320 int len = w ? sizeof(u32) : sizeof(u64);
321
322 kvm_cvt_df(&vcpu->arch.fpr[rs], &tmp[0]);
323 tmp[1] = vcpu->arch.qpr[rs];
324
325 r = kvmppc_st(vcpu, &addr, len, tmp, true);
326 vcpu->arch.paddr_accessed = addr;
327 if (r < 0) {
328 kvmppc_inject_pf(vcpu, addr, true);
329 } else if ((r == EMULATE_DO_MMIO) && w) {
330 emulated = kvmppc_handle_store(run, vcpu, tmp[0], 4, 1);
331 } else if (r == EMULATE_DO_MMIO) {
332 u64 val = ((u64)tmp[0] << 32) | tmp[1];
333 emulated = kvmppc_handle_store(run, vcpu, val, 8, 1);
334 } else {
335 emulated = EMULATE_DONE;
336 }
337
338 dprintk(KERN_INFO "KVM: PSQ_ST [0x%x, 0x%x] at 0x%lx (%d)\n",
339 tmp[0], tmp[1], addr, len);
340
341 return emulated;
342 }
343
344 /*
345 * Cuts out inst bits with ordering according to spec.
346 * That means the leftmost bit is zero. All given bits are included.
347 */
348 static inline u32 inst_get_field(u32 inst, int msb, int lsb)
349 {
350 return kvmppc_get_field(inst, msb + 32, lsb + 32);
351 }
352
353 /*
354 * Replaces inst bits with ordering according to spec.
355 */
356 static inline u32 inst_set_field(u32 inst, int msb, int lsb, int value)
357 {
358 return kvmppc_set_field(inst, msb + 32, lsb + 32, value);
359 }
360
361 bool kvmppc_inst_is_paired_single(struct kvm_vcpu *vcpu, u32 inst)
362 {
363 if (!(vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE))
364 return false;
365
366 switch (get_op(inst)) {
367 case OP_PSQ_L:
368 case OP_PSQ_LU:
369 case OP_PSQ_ST:
370 case OP_PSQ_STU:
371 case OP_LFS:
372 case OP_LFSU:
373 case OP_LFD:
374 case OP_LFDU:
375 case OP_STFS:
376 case OP_STFSU:
377 case OP_STFD:
378 case OP_STFDU:
379 return true;
380 case 4:
381 /* X form */
382 switch (inst_get_field(inst, 21, 30)) {
383 case OP_4X_PS_CMPU0:
384 case OP_4X_PSQ_LX:
385 case OP_4X_PS_CMPO0:
386 case OP_4X_PSQ_LUX:
387 case OP_4X_PS_NEG:
388 case OP_4X_PS_CMPU1:
389 case OP_4X_PS_MR:
390 case OP_4X_PS_CMPO1:
391 case OP_4X_PS_NABS:
392 case OP_4X_PS_ABS:
393 case OP_4X_PS_MERGE00:
394 case OP_4X_PS_MERGE01:
395 case OP_4X_PS_MERGE10:
396 case OP_4X_PS_MERGE11:
397 return true;
398 }
399 /* XW form */
400 switch (inst_get_field(inst, 25, 30)) {
401 case OP_4XW_PSQ_STX:
402 case OP_4XW_PSQ_STUX:
403 return true;
404 }
405 /* A form */
406 switch (inst_get_field(inst, 26, 30)) {
407 case OP_4A_PS_SUM1:
408 case OP_4A_PS_SUM0:
409 case OP_4A_PS_MULS0:
410 case OP_4A_PS_MULS1:
411 case OP_4A_PS_MADDS0:
412 case OP_4A_PS_MADDS1:
413 case OP_4A_PS_DIV:
414 case OP_4A_PS_SUB:
415 case OP_4A_PS_ADD:
416 case OP_4A_PS_SEL:
417 case OP_4A_PS_RES:
418 case OP_4A_PS_MUL:
419 case OP_4A_PS_RSQRTE:
420 case OP_4A_PS_MSUB:
421 case OP_4A_PS_MADD:
422 case OP_4A_PS_NMSUB:
423 case OP_4A_PS_NMADD:
424 return true;
425 }
426 break;
427 case 59:
428 switch (inst_get_field(inst, 21, 30)) {
429 case OP_59_FADDS:
430 case OP_59_FSUBS:
431 case OP_59_FDIVS:
432 case OP_59_FRES:
433 case OP_59_FRSQRTES:
434 return true;
435 }
436 switch (inst_get_field(inst, 26, 30)) {
437 case OP_59_FMULS:
438 case OP_59_FMSUBS:
439 case OP_59_FMADDS:
440 case OP_59_FNMSUBS:
441 case OP_59_FNMADDS:
442 return true;
443 }
444 break;
445 case 63:
446 switch (inst_get_field(inst, 21, 30)) {
447 case OP_63_MTFSB0:
448 case OP_63_MTFSB1:
449 case OP_63_MTFSF:
450 case OP_63_MTFSFI:
451 case OP_63_MCRFS:
452 case OP_63_MFFS:
453 case OP_63_FCMPU:
454 case OP_63_FCMPO:
455 case OP_63_FNEG:
456 case OP_63_FMR:
457 case OP_63_FABS:
458 case OP_63_FRSP:
459 case OP_63_FDIV:
460 case OP_63_FADD:
461 case OP_63_FSUB:
462 case OP_63_FCTIW:
463 case OP_63_FCTIWZ:
464 case OP_63_FRSQRTE:
465 case OP_63_FCPSGN:
466 return true;
467 }
468 switch (inst_get_field(inst, 26, 30)) {
469 case OP_63_FMUL:
470 case OP_63_FSEL:
471 case OP_63_FMSUB:
472 case OP_63_FMADD:
473 case OP_63_FNMSUB:
474 case OP_63_FNMADD:
475 return true;
476 }
477 break;
478 case 31:
479 switch (inst_get_field(inst, 21, 30)) {
480 case OP_31_LFSX:
481 case OP_31_LFSUX:
482 case OP_31_LFDX:
483 case OP_31_LFDUX:
484 case OP_31_STFSX:
485 case OP_31_STFSUX:
486 case OP_31_STFX:
487 case OP_31_STFUX:
488 case OP_31_STFIWX:
489 return true;
490 }
491 break;
492 }
493
494 return false;
495 }
496
497 static int get_d_signext(u32 inst)
498 {
499 int d = inst & 0x8ff;
500
501 if (d & 0x800)
502 return -(d & 0x7ff);
503
504 return (d & 0x7ff);
505 }
506
507 static int kvmppc_ps_three_in(struct kvm_vcpu *vcpu, bool rc,
508 int reg_out, int reg_in1, int reg_in2,
509 int reg_in3, int scalar,
510 void (*func)(u64 *fpscr,
511 u32 *dst, u32 *src1,
512 u32 *src2, u32 *src3))
513 {
514 u32 *qpr = vcpu->arch.qpr;
515 u64 *fpr = vcpu->arch.fpr;
516 u32 ps0_out;
517 u32 ps0_in1, ps0_in2, ps0_in3;
518 u32 ps1_in1, ps1_in2, ps1_in3;
519
520 /* RC */
521 WARN_ON(rc);
522
523 /* PS0 */
524 kvm_cvt_df(&fpr[reg_in1], &ps0_in1);
525 kvm_cvt_df(&fpr[reg_in2], &ps0_in2);
526 kvm_cvt_df(&fpr[reg_in3], &ps0_in3);
527
528 if (scalar & SCALAR_LOW)
529 ps0_in2 = qpr[reg_in2];
530
531 func(&vcpu->arch.fpscr, &ps0_out, &ps0_in1, &ps0_in2, &ps0_in3);
532
533 dprintk(KERN_INFO "PS3 ps0 -> f(0x%x, 0x%x, 0x%x) = 0x%x\n",
534 ps0_in1, ps0_in2, ps0_in3, ps0_out);
535
536 if (!(scalar & SCALAR_NO_PS0))
537 kvm_cvt_fd(&ps0_out, &fpr[reg_out]);
538
539 /* PS1 */
540 ps1_in1 = qpr[reg_in1];
541 ps1_in2 = qpr[reg_in2];
542 ps1_in3 = qpr[reg_in3];
543
544 if (scalar & SCALAR_HIGH)
545 ps1_in2 = ps0_in2;
546
547 if (!(scalar & SCALAR_NO_PS1))
548 func(&vcpu->arch.fpscr, &qpr[reg_out], &ps1_in1, &ps1_in2, &ps1_in3);
549
550 dprintk(KERN_INFO "PS3 ps1 -> f(0x%x, 0x%x, 0x%x) = 0x%x\n",
551 ps1_in1, ps1_in2, ps1_in3, qpr[reg_out]);
552
553 return EMULATE_DONE;
554 }
555
556 static int kvmppc_ps_two_in(struct kvm_vcpu *vcpu, bool rc,
557 int reg_out, int reg_in1, int reg_in2,
558 int scalar,
559 void (*func)(u64 *fpscr,
560 u32 *dst, u32 *src1,
561 u32 *src2))
562 {
563 u32 *qpr = vcpu->arch.qpr;
564 u64 *fpr = vcpu->arch.fpr;
565 u32 ps0_out;
566 u32 ps0_in1, ps0_in2;
567 u32 ps1_out;
568 u32 ps1_in1, ps1_in2;
569
570 /* RC */
571 WARN_ON(rc);
572
573 /* PS0 */
574 kvm_cvt_df(&fpr[reg_in1], &ps0_in1);
575
576 if (scalar & SCALAR_LOW)
577 ps0_in2 = qpr[reg_in2];
578 else
579 kvm_cvt_df(&fpr[reg_in2], &ps0_in2);
580
581 func(&vcpu->arch.fpscr, &ps0_out, &ps0_in1, &ps0_in2);
582
583 if (!(scalar & SCALAR_NO_PS0)) {
584 dprintk(KERN_INFO "PS2 ps0 -> f(0x%x, 0x%x) = 0x%x\n",
585 ps0_in1, ps0_in2, ps0_out);
586
587 kvm_cvt_fd(&ps0_out, &fpr[reg_out]);
588 }
589
590 /* PS1 */
591 ps1_in1 = qpr[reg_in1];
592 ps1_in2 = qpr[reg_in2];
593
594 if (scalar & SCALAR_HIGH)
595 ps1_in2 = ps0_in2;
596
597 func(&vcpu->arch.fpscr, &ps1_out, &ps1_in1, &ps1_in2);
598
599 if (!(scalar & SCALAR_NO_PS1)) {
600 qpr[reg_out] = ps1_out;
601
602 dprintk(KERN_INFO "PS2 ps1 -> f(0x%x, 0x%x) = 0x%x\n",
603 ps1_in1, ps1_in2, qpr[reg_out]);
604 }
605
606 return EMULATE_DONE;
607 }
608
609 static int kvmppc_ps_one_in(struct kvm_vcpu *vcpu, bool rc,
610 int reg_out, int reg_in,
611 void (*func)(u64 *t,
612 u32 *dst, u32 *src1))
613 {
614 u32 *qpr = vcpu->arch.qpr;
615 u64 *fpr = vcpu->arch.fpr;
616 u32 ps0_out, ps0_in;
617 u32 ps1_in;
618
619 /* RC */
620 WARN_ON(rc);
621
622 /* PS0 */
623 kvm_cvt_df(&fpr[reg_in], &ps0_in);
624 func(&vcpu->arch.fpscr, &ps0_out, &ps0_in);
625
626 dprintk(KERN_INFO "PS1 ps0 -> f(0x%x) = 0x%x\n",
627 ps0_in, ps0_out);
628
629 kvm_cvt_fd(&ps0_out, &fpr[reg_out]);
630
631 /* PS1 */
632 ps1_in = qpr[reg_in];
633 func(&vcpu->arch.fpscr, &qpr[reg_out], &ps1_in);
634
635 dprintk(KERN_INFO "PS1 ps1 -> f(0x%x) = 0x%x\n",
636 ps1_in, qpr[reg_out]);
637
638 return EMULATE_DONE;
639 }
640
641 int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
642 {
643 u32 inst = kvmppc_get_last_inst(vcpu);
644 enum emulation_result emulated = EMULATE_DONE;
645
646 int ax_rd = inst_get_field(inst, 6, 10);
647 int ax_ra = inst_get_field(inst, 11, 15);
648 int ax_rb = inst_get_field(inst, 16, 20);
649 int ax_rc = inst_get_field(inst, 21, 25);
650 short full_d = inst_get_field(inst, 16, 31);
651
652 u64 *fpr_d = &vcpu->arch.fpr[ax_rd];
653 u64 *fpr_a = &vcpu->arch.fpr[ax_ra];
654 u64 *fpr_b = &vcpu->arch.fpr[ax_rb];
655 u64 *fpr_c = &vcpu->arch.fpr[ax_rc];
656
657 bool rcomp = (inst & 1) ? true : false;
658 u32 cr = kvmppc_get_cr(vcpu);
659 #ifdef DEBUG
660 int i;
661 #endif
662
663 if (!kvmppc_inst_is_paired_single(vcpu, inst))
664 return EMULATE_FAIL;
665
666 if (!(vcpu->arch.shared->msr & MSR_FP)) {
667 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL);
668 return EMULATE_AGAIN;
669 }
670
671 kvmppc_giveup_ext(vcpu, MSR_FP);
672 preempt_disable();
673 enable_kernel_fp();
674 /* Do we need to clear FE0 / FE1 here? Don't think so. */
675
676 #ifdef DEBUG
677 for (i = 0; i < ARRAY_SIZE(vcpu->arch.fpr); i++) {
678 u32 f;
679 kvm_cvt_df(&vcpu->arch.fpr[i], &f);
680 dprintk(KERN_INFO "FPR[%d] = 0x%x / 0x%llx QPR[%d] = 0x%x\n",
681 i, f, vcpu->arch.fpr[i], i, vcpu->arch.qpr[i]);
682 }
683 #endif
684
685 switch (get_op(inst)) {
686 case OP_PSQ_L:
687 {
688 ulong addr = ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0;
689 bool w = inst_get_field(inst, 16, 16) ? true : false;
690 int i = inst_get_field(inst, 17, 19);
691
692 addr += get_d_signext(inst);
693 emulated = kvmppc_emulate_psq_load(run, vcpu, ax_rd, addr, w, i);
694 break;
695 }
696 case OP_PSQ_LU:
697 {
698 ulong addr = kvmppc_get_gpr(vcpu, ax_ra);
699 bool w = inst_get_field(inst, 16, 16) ? true : false;
700 int i = inst_get_field(inst, 17, 19);
701
702 addr += get_d_signext(inst);
703 emulated = kvmppc_emulate_psq_load(run, vcpu, ax_rd, addr, w, i);
704
705 if (emulated == EMULATE_DONE)
706 kvmppc_set_gpr(vcpu, ax_ra, addr);
707 break;
708 }
709 case OP_PSQ_ST:
710 {
711 ulong addr = ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0;
712 bool w = inst_get_field(inst, 16, 16) ? true : false;
713 int i = inst_get_field(inst, 17, 19);
714
715 addr += get_d_signext(inst);
716 emulated = kvmppc_emulate_psq_store(run, vcpu, ax_rd, addr, w, i);
717 break;
718 }
719 case OP_PSQ_STU:
720 {
721 ulong addr = kvmppc_get_gpr(vcpu, ax_ra);
722 bool w = inst_get_field(inst, 16, 16) ? true : false;
723 int i = inst_get_field(inst, 17, 19);
724
725 addr += get_d_signext(inst);
726 emulated = kvmppc_emulate_psq_store(run, vcpu, ax_rd, addr, w, i);
727
728 if (emulated == EMULATE_DONE)
729 kvmppc_set_gpr(vcpu, ax_ra, addr);
730 break;
731 }
732 case 4:
733 /* X form */
734 switch (inst_get_field(inst, 21, 30)) {
735 case OP_4X_PS_CMPU0:
736 /* XXX */
737 emulated = EMULATE_FAIL;
738 break;
739 case OP_4X_PSQ_LX:
740 {
741 ulong addr = ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0;
742 bool w = inst_get_field(inst, 21, 21) ? true : false;
743 int i = inst_get_field(inst, 22, 24);
744
745 addr += kvmppc_get_gpr(vcpu, ax_rb);
746 emulated = kvmppc_emulate_psq_load(run, vcpu, ax_rd, addr, w, i);
747 break;
748 }
749 case OP_4X_PS_CMPO0:
750 /* XXX */
751 emulated = EMULATE_FAIL;
752 break;
753 case OP_4X_PSQ_LUX:
754 {
755 ulong addr = kvmppc_get_gpr(vcpu, ax_ra);
756 bool w = inst_get_field(inst, 21, 21) ? true : false;
757 int i = inst_get_field(inst, 22, 24);
758
759 addr += kvmppc_get_gpr(vcpu, ax_rb);
760 emulated = kvmppc_emulate_psq_load(run, vcpu, ax_rd, addr, w, i);
761
762 if (emulated == EMULATE_DONE)
763 kvmppc_set_gpr(vcpu, ax_ra, addr);
764 break;
765 }
766 case OP_4X_PS_NEG:
767 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_rb];
768 vcpu->arch.fpr[ax_rd] ^= 0x8000000000000000ULL;
769 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rb];
770 vcpu->arch.qpr[ax_rd] ^= 0x80000000;
771 break;
772 case OP_4X_PS_CMPU1:
773 /* XXX */
774 emulated = EMULATE_FAIL;
775 break;
776 case OP_4X_PS_MR:
777 WARN_ON(rcomp);
778 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_rb];
779 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rb];
780 break;
781 case OP_4X_PS_CMPO1:
782 /* XXX */
783 emulated = EMULATE_FAIL;
784 break;
785 case OP_4X_PS_NABS:
786 WARN_ON(rcomp);
787 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_rb];
788 vcpu->arch.fpr[ax_rd] |= 0x8000000000000000ULL;
789 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rb];
790 vcpu->arch.qpr[ax_rd] |= 0x80000000;
791 break;
792 case OP_4X_PS_ABS:
793 WARN_ON(rcomp);
794 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_rb];
795 vcpu->arch.fpr[ax_rd] &= ~0x8000000000000000ULL;
796 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rb];
797 vcpu->arch.qpr[ax_rd] &= ~0x80000000;
798 break;
799 case OP_4X_PS_MERGE00:
800 WARN_ON(rcomp);
801 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_ra];
802 /* vcpu->arch.qpr[ax_rd] = vcpu->arch.fpr[ax_rb]; */
803 kvm_cvt_df(&vcpu->arch.fpr[ax_rb],
804 &vcpu->arch.qpr[ax_rd]);
805 break;
806 case OP_4X_PS_MERGE01:
807 WARN_ON(rcomp);
808 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_ra];
809 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rb];
810 break;
811 case OP_4X_PS_MERGE10:
812 WARN_ON(rcomp);
813 /* vcpu->arch.fpr[ax_rd] = vcpu->arch.qpr[ax_ra]; */
814 kvm_cvt_fd(&vcpu->arch.qpr[ax_ra],
815 &vcpu->arch.fpr[ax_rd]);
816 /* vcpu->arch.qpr[ax_rd] = vcpu->arch.fpr[ax_rb]; */
817 kvm_cvt_df(&vcpu->arch.fpr[ax_rb],
818 &vcpu->arch.qpr[ax_rd]);
819 break;
820 case OP_4X_PS_MERGE11:
821 WARN_ON(rcomp);
822 /* vcpu->arch.fpr[ax_rd] = vcpu->arch.qpr[ax_ra]; */
823 kvm_cvt_fd(&vcpu->arch.qpr[ax_ra],
824 &vcpu->arch.fpr[ax_rd]);
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);
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