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[ARM] pxa/balloon3: Machine file cleanup
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / arch / powerpc / kvm / book3s_paired_singles.c
bloba9f66abafcb3e3a1a510b44b5f47fabeae886ee6
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 struct thread_struct t;
163
164 t.fpscr.val = vcpu->arch.fpscr;
165 cvt_df((double*)&vcpu->arch.fpr[rt], (float*)&vcpu->arch.qpr[rt], &t);
166 }
167
168 static void kvmppc_inject_pf(struct kvm_vcpu *vcpu, ulong eaddr, bool is_store)
169 {
170 u64 dsisr;
171
172 vcpu->arch.msr = kvmppc_set_field(vcpu->arch.msr, 33, 36, 0);
173 vcpu->arch.msr = kvmppc_set_field(vcpu->arch.msr, 42, 47, 0);
174 vcpu->arch.dear = eaddr;
175 /* Page Fault */
176 dsisr = kvmppc_set_field(0, 33, 33, 1);
177 if (is_store)
178 to_book3s(vcpu)->dsisr = kvmppc_set_field(dsisr, 38, 38, 1);
179 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE);
180 }
181
182 static int kvmppc_emulate_fpr_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
183 int rs, ulong addr, int ls_type)
184 {
185 int emulated = EMULATE_FAIL;
186 struct thread_struct t;
187 int r;
188 char tmp[8];
189 int len = sizeof(u32);
190
191 if (ls_type == FPU_LS_DOUBLE)
192 len = sizeof(u64);
193
194 t.fpscr.val = vcpu->arch.fpscr;
195
196 /* read from memory */
197 r = kvmppc_ld(vcpu, &addr, len, tmp, true);
198 vcpu->arch.paddr_accessed = addr;
199
200 if (r < 0) {
201 kvmppc_inject_pf(vcpu, addr, false);
202 goto done_load;
203 } else if (r == EMULATE_DO_MMIO) {
204 emulated = kvmppc_handle_load(run, vcpu, KVM_REG_FPR | rs, len, 1);
205 goto done_load;
206 }
207
208 emulated = EMULATE_DONE;
209
210 /* put in registers */
211 switch (ls_type) {
212 case FPU_LS_SINGLE:
213 cvt_fd((float*)tmp, (double*)&vcpu->arch.fpr[rs], &t);
214 vcpu->arch.qpr[rs] = *((u32*)tmp);
215 break;
216 case FPU_LS_DOUBLE:
217 vcpu->arch.fpr[rs] = *((u64*)tmp);
218 break;
219 }
220
221 dprintk(KERN_INFO "KVM: FPR_LD [0x%llx] at 0x%lx (%d)\n", *(u64*)tmp,
222 addr, len);
223
224 done_load:
225 return emulated;
226 }
227
228 static int kvmppc_emulate_fpr_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
229 int rs, ulong addr, int ls_type)
230 {
231 int emulated = EMULATE_FAIL;
232 struct thread_struct t;
233 int r;
234 char tmp[8];
235 u64 val;
236 int len;
237
238 t.fpscr.val = vcpu->arch.fpscr;
239
240 switch (ls_type) {
241 case FPU_LS_SINGLE:
242 cvt_df((double*)&vcpu->arch.fpr[rs], (float*)tmp, &t);
243 val = *((u32*)tmp);
244 len = sizeof(u32);
245 break;
246 case FPU_LS_SINGLE_LOW:
247 *((u32*)tmp) = vcpu->arch.fpr[rs];
248 val = vcpu->arch.fpr[rs] & 0xffffffff;
249 len = sizeof(u32);
250 break;
251 case FPU_LS_DOUBLE:
252 *((u64*)tmp) = vcpu->arch.fpr[rs];
253 val = vcpu->arch.fpr[rs];
254 len = sizeof(u64);
255 break;
256 default:
257 val = 0;
258 len = 0;
259 }
260
261 r = kvmppc_st(vcpu, &addr, len, tmp, true);
262 vcpu->arch.paddr_accessed = addr;
263 if (r < 0) {
264 kvmppc_inject_pf(vcpu, addr, true);
265 } else if (r == EMULATE_DO_MMIO) {
266 emulated = kvmppc_handle_store(run, vcpu, val, len, 1);
267 } else {
268 emulated = EMULATE_DONE;
269 }
270
271 dprintk(KERN_INFO "KVM: FPR_ST [0x%llx] at 0x%lx (%d)\n",
272 val, addr, len);
273
274 return emulated;
275 }
276
277 static int kvmppc_emulate_psq_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
278 int rs, ulong addr, bool w, int i)
279 {
280 int emulated = EMULATE_FAIL;
281 struct thread_struct t;
282 int r;
283 float one = 1.0;
284 u32 tmp[2];
285
286 t.fpscr.val = vcpu->arch.fpscr;
287
288 /* read from memory */
289 if (w) {
290 r = kvmppc_ld(vcpu, &addr, sizeof(u32), tmp, true);
291 memcpy(&tmp[1], &one, sizeof(u32));
292 } else {
293 r = kvmppc_ld(vcpu, &addr, sizeof(u32) * 2, tmp, true);
294 }
295 vcpu->arch.paddr_accessed = addr;
296 if (r < 0) {
297 kvmppc_inject_pf(vcpu, addr, false);
298 goto done_load;
299 } else if ((r == EMULATE_DO_MMIO) && w) {
300 emulated = kvmppc_handle_load(run, vcpu, KVM_REG_FPR | rs, 4, 1);
301 vcpu->arch.qpr[rs] = tmp[1];
302 goto done_load;
303 } else if (r == EMULATE_DO_MMIO) {
304 emulated = kvmppc_handle_load(run, vcpu, KVM_REG_FQPR | rs, 8, 1);
305 goto done_load;
306 }
307
308 emulated = EMULATE_DONE;
309
310 /* put in registers */
311 cvt_fd((float*)&tmp[0], (double*)&vcpu->arch.fpr[rs], &t);
312 vcpu->arch.qpr[rs] = tmp[1];
313
314 dprintk(KERN_INFO "KVM: PSQ_LD [0x%x, 0x%x] at 0x%lx (%d)\n", tmp[0],
315 tmp[1], addr, w ? 4 : 8);
316
317 done_load:
318 return emulated;
319 }
320
321 static int kvmppc_emulate_psq_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
322 int rs, ulong addr, bool w, int i)
323 {
324 int emulated = EMULATE_FAIL;
325 struct thread_struct t;
326 int r;
327 u32 tmp[2];
328 int len = w ? sizeof(u32) : sizeof(u64);
329
330 t.fpscr.val = vcpu->arch.fpscr;
331
332 cvt_df((double*)&vcpu->arch.fpr[rs], (float*)&tmp[0], &t);
333 tmp[1] = vcpu->arch.qpr[rs];
334
335 r = kvmppc_st(vcpu, &addr, len, tmp, true);
336 vcpu->arch.paddr_accessed = addr;
337 if (r < 0) {
338 kvmppc_inject_pf(vcpu, addr, true);
339 } else if ((r == EMULATE_DO_MMIO) && w) {
340 emulated = kvmppc_handle_store(run, vcpu, tmp[0], 4, 1);
341 } else if (r == EMULATE_DO_MMIO) {
342 u64 val = ((u64)tmp[0] << 32) | tmp[1];
343 emulated = kvmppc_handle_store(run, vcpu, val, 8, 1);
344 } else {
345 emulated = EMULATE_DONE;
346 }
347
348 dprintk(KERN_INFO "KVM: PSQ_ST [0x%x, 0x%x] at 0x%lx (%d)\n",
349 tmp[0], tmp[1], addr, len);
350
351 return emulated;
352 }
353
354 /*
355 * Cuts out inst bits with ordering according to spec.
356 * That means the leftmost bit is zero. All given bits are included.
357 */
358 static inline u32 inst_get_field(u32 inst, int msb, int lsb)
359 {
360 return kvmppc_get_field(inst, msb + 32, lsb + 32);
361 }
362
363 /*
364 * Replaces inst bits with ordering according to spec.
365 */
366 static inline u32 inst_set_field(u32 inst, int msb, int lsb, int value)
367 {
368 return kvmppc_set_field(inst, msb + 32, lsb + 32, value);
369 }
370
371 bool kvmppc_inst_is_paired_single(struct kvm_vcpu *vcpu, u32 inst)
372 {
373 if (!(vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE))
374 return false;
375
376 switch (get_op(inst)) {
377 case OP_PSQ_L:
378 case OP_PSQ_LU:
379 case OP_PSQ_ST:
380 case OP_PSQ_STU:
381 case OP_LFS:
382 case OP_LFSU:
383 case OP_LFD:
384 case OP_LFDU:
385 case OP_STFS:
386 case OP_STFSU:
387 case OP_STFD:
388 case OP_STFDU:
389 return true;
390 case 4:
391 /* X form */
392 switch (inst_get_field(inst, 21, 30)) {
393 case OP_4X_PS_CMPU0:
394 case OP_4X_PSQ_LX:
395 case OP_4X_PS_CMPO0:
396 case OP_4X_PSQ_LUX:
397 case OP_4X_PS_NEG:
398 case OP_4X_PS_CMPU1:
399 case OP_4X_PS_MR:
400 case OP_4X_PS_CMPO1:
401 case OP_4X_PS_NABS:
402 case OP_4X_PS_ABS:
403 case OP_4X_PS_MERGE00:
404 case OP_4X_PS_MERGE01:
405 case OP_4X_PS_MERGE10:
406 case OP_4X_PS_MERGE11:
407 return true;
408 }
409 /* XW form */
410 switch (inst_get_field(inst, 25, 30)) {
411 case OP_4XW_PSQ_STX:
412 case OP_4XW_PSQ_STUX:
413 return true;
414 }
415 /* A form */
416 switch (inst_get_field(inst, 26, 30)) {
417 case OP_4A_PS_SUM1:
418 case OP_4A_PS_SUM0:
419 case OP_4A_PS_MULS0:
420 case OP_4A_PS_MULS1:
421 case OP_4A_PS_MADDS0:
422 case OP_4A_PS_MADDS1:
423 case OP_4A_PS_DIV:
424 case OP_4A_PS_SUB:
425 case OP_4A_PS_ADD:
426 case OP_4A_PS_SEL:
427 case OP_4A_PS_RES:
428 case OP_4A_PS_MUL:
429 case OP_4A_PS_RSQRTE:
430 case OP_4A_PS_MSUB:
431 case OP_4A_PS_MADD:
432 case OP_4A_PS_NMSUB:
433 case OP_4A_PS_NMADD:
434 return true;
435 }
436 break;
437 case 59:
438 switch (inst_get_field(inst, 21, 30)) {
439 case OP_59_FADDS:
440 case OP_59_FSUBS:
441 case OP_59_FDIVS:
442 case OP_59_FRES:
443 case OP_59_FRSQRTES:
444 return true;
445 }
446 switch (inst_get_field(inst, 26, 30)) {
447 case OP_59_FMULS:
448 case OP_59_FMSUBS:
449 case OP_59_FMADDS:
450 case OP_59_FNMSUBS:
451 case OP_59_FNMADDS:
452 return true;
453 }
454 break;
455 case 63:
456 switch (inst_get_field(inst, 21, 30)) {
457 case OP_63_MTFSB0:
458 case OP_63_MTFSB1:
459 case OP_63_MTFSF:
460 case OP_63_MTFSFI:
461 case OP_63_MCRFS:
462 case OP_63_MFFS:
463 case OP_63_FCMPU:
464 case OP_63_FCMPO:
465 case OP_63_FNEG:
466 case OP_63_FMR:
467 case OP_63_FABS:
468 case OP_63_FRSP:
469 case OP_63_FDIV:
470 case OP_63_FADD:
471 case OP_63_FSUB:
472 case OP_63_FCTIW:
473 case OP_63_FCTIWZ:
474 case OP_63_FRSQRTE:
475 case OP_63_FCPSGN:
476 return true;
477 }
478 switch (inst_get_field(inst, 26, 30)) {
479 case OP_63_FMUL:
480 case OP_63_FSEL:
481 case OP_63_FMSUB:
482 case OP_63_FMADD:
483 case OP_63_FNMSUB:
484 case OP_63_FNMADD:
485 return true;
486 }
487 break;
488 case 31:
489 switch (inst_get_field(inst, 21, 30)) {
490 case OP_31_LFSX:
491 case OP_31_LFSUX:
492 case OP_31_LFDX:
493 case OP_31_LFDUX:
494 case OP_31_STFSX:
495 case OP_31_STFSUX:
496 case OP_31_STFX:
497 case OP_31_STFUX:
498 case OP_31_STFIWX:
499 return true;
500 }
501 break;
502 }
503
504 return false;
505 }
506
507 static int get_d_signext(u32 inst)
508 {
509 int d = inst & 0x8ff;
510
511 if (d & 0x800)
512 return -(d & 0x7ff);
513
514 return (d & 0x7ff);
515 }
516
517 static int kvmppc_ps_three_in(struct kvm_vcpu *vcpu, bool rc,
518 int reg_out, int reg_in1, int reg_in2,
519 int reg_in3, int scalar,
520 void (*func)(struct thread_struct *t,
521 u32 *dst, u32 *src1,
522 u32 *src2, u32 *src3))
523 {
524 u32 *qpr = vcpu->arch.qpr;
525 u64 *fpr = vcpu->arch.fpr;
526 u32 ps0_out;
527 u32 ps0_in1, ps0_in2, ps0_in3;
528 u32 ps1_in1, ps1_in2, ps1_in3;
529 struct thread_struct t;
530 t.fpscr.val = vcpu->arch.fpscr;
531
532 /* RC */
533 WARN_ON(rc);
534
535 /* PS0 */
536 cvt_df((double*)&fpr[reg_in1], (float*)&ps0_in1, &t);
537 cvt_df((double*)&fpr[reg_in2], (float*)&ps0_in2, &t);
538 cvt_df((double*)&fpr[reg_in3], (float*)&ps0_in3, &t);
539
540 if (scalar & SCALAR_LOW)
541 ps0_in2 = qpr[reg_in2];
542
543 func(&t, &ps0_out, &ps0_in1, &ps0_in2, &ps0_in3);
544
545 dprintk(KERN_INFO "PS3 ps0 -> f(0x%x, 0x%x, 0x%x) = 0x%x\n",
546 ps0_in1, ps0_in2, ps0_in3, ps0_out);
547
548 if (!(scalar & SCALAR_NO_PS0))
549 cvt_fd((float*)&ps0_out, (double*)&fpr[reg_out], &t);
550
551 /* PS1 */
552 ps1_in1 = qpr[reg_in1];
553 ps1_in2 = qpr[reg_in2];
554 ps1_in3 = qpr[reg_in3];
555
556 if (scalar & SCALAR_HIGH)
557 ps1_in2 = ps0_in2;
558
559 if (!(scalar & SCALAR_NO_PS1))
560 func(&t, &qpr[reg_out], &ps1_in1, &ps1_in2, &ps1_in3);
561
562 dprintk(KERN_INFO "PS3 ps1 -> f(0x%x, 0x%x, 0x%x) = 0x%x\n",
563 ps1_in1, ps1_in2, ps1_in3, qpr[reg_out]);
564
565 return EMULATE_DONE;
566 }
567
568 static int kvmppc_ps_two_in(struct kvm_vcpu *vcpu, bool rc,
569 int reg_out, int reg_in1, int reg_in2,
570 int scalar,
571 void (*func)(struct thread_struct *t,
572 u32 *dst, u32 *src1,
573 u32 *src2))
574 {
575 u32 *qpr = vcpu->arch.qpr;
576 u64 *fpr = vcpu->arch.fpr;
577 u32 ps0_out;
578 u32 ps0_in1, ps0_in2;
579 u32 ps1_out;
580 u32 ps1_in1, ps1_in2;
581 struct thread_struct t;
582 t.fpscr.val = vcpu->arch.fpscr;
583
584 /* RC */
585 WARN_ON(rc);
586
587 /* PS0 */
588 cvt_df((double*)&fpr[reg_in1], (float*)&ps0_in1, &t);
589
590 if (scalar & SCALAR_LOW)
591 ps0_in2 = qpr[reg_in2];
592 else
593 cvt_df((double*)&fpr[reg_in2], (float*)&ps0_in2, &t);
594
595 func(&t, &ps0_out, &ps0_in1, &ps0_in2);
596
597 if (!(scalar & SCALAR_NO_PS0)) {
598 dprintk(KERN_INFO "PS2 ps0 -> f(0x%x, 0x%x) = 0x%x\n",
599 ps0_in1, ps0_in2, ps0_out);
600
601 cvt_fd((float*)&ps0_out, (double*)&fpr[reg_out], &t);
602 }
603
604 /* PS1 */
605 ps1_in1 = qpr[reg_in1];
606 ps1_in2 = qpr[reg_in2];
607
608 if (scalar & SCALAR_HIGH)
609 ps1_in2 = ps0_in2;
610
611 func(&t, &ps1_out, &ps1_in1, &ps1_in2);
612
613 if (!(scalar & SCALAR_NO_PS1)) {
614 qpr[reg_out] = ps1_out;
615
616 dprintk(KERN_INFO "PS2 ps1 -> f(0x%x, 0x%x) = 0x%x\n",
617 ps1_in1, ps1_in2, qpr[reg_out]);
618 }
619
620 return EMULATE_DONE;
621 }
622
623 static int kvmppc_ps_one_in(struct kvm_vcpu *vcpu, bool rc,
624 int reg_out, int reg_in,
625 void (*func)(struct thread_struct *t,
626 u32 *dst, u32 *src1))
627 {
628 u32 *qpr = vcpu->arch.qpr;
629 u64 *fpr = vcpu->arch.fpr;
630 u32 ps0_out, ps0_in;
631 u32 ps1_in;
632 struct thread_struct t;
633 t.fpscr.val = vcpu->arch.fpscr;
634
635 /* RC */
636 WARN_ON(rc);
637
638 /* PS0 */
639 cvt_df((double*)&fpr[reg_in], (float*)&ps0_in, &t);
640 func(&t, &ps0_out, &ps0_in);
641
642 dprintk(KERN_INFO "PS1 ps0 -> f(0x%x) = 0x%x\n",
643 ps0_in, ps0_out);
644
645 cvt_fd((float*)&ps0_out, (double*)&fpr[reg_out], &t);
646
647 /* PS1 */
648 ps1_in = qpr[reg_in];
649 func(&t, &qpr[reg_out], &ps1_in);
650
651 dprintk(KERN_INFO "PS1 ps1 -> f(0x%x) = 0x%x\n",
652 ps1_in, qpr[reg_out]);
653
654 return EMULATE_DONE;
655 }
656
657 int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
658 {
659 u32 inst = kvmppc_get_last_inst(vcpu);
660 enum emulation_result emulated = EMULATE_DONE;
661
662 int ax_rd = inst_get_field(inst, 6, 10);
663 int ax_ra = inst_get_field(inst, 11, 15);
664 int ax_rb = inst_get_field(inst, 16, 20);
665 int ax_rc = inst_get_field(inst, 21, 25);
666 short full_d = inst_get_field(inst, 16, 31);
667
668 u64 *fpr_d = &vcpu->arch.fpr[ax_rd];
669 u64 *fpr_a = &vcpu->arch.fpr[ax_ra];
670 u64 *fpr_b = &vcpu->arch.fpr[ax_rb];
671 u64 *fpr_c = &vcpu->arch.fpr[ax_rc];
672
673 bool rcomp = (inst & 1) ? true : false;
674 u32 cr = kvmppc_get_cr(vcpu);
675 struct thread_struct t;
676 #ifdef DEBUG
677 int i;
678 #endif
679
680 t.fpscr.val = vcpu->arch.fpscr;
681
682 if (!kvmppc_inst_is_paired_single(vcpu, inst))
683 return EMULATE_FAIL;
684
685 if (!(vcpu->arch.msr & MSR_FP)) {
686 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL);
687 return EMULATE_AGAIN;
688 }
689
690 kvmppc_giveup_ext(vcpu, MSR_FP);
691 preempt_disable();
692 enable_kernel_fp();
693 /* Do we need to clear FE0 / FE1 here? Don't think so. */
694
695 #ifdef DEBUG
696 for (i = 0; i < ARRAY_SIZE(vcpu->arch.fpr); i++) {
697 u32 f;
698 cvt_df((double*)&vcpu->arch.fpr[i], (float*)&f, &t);
699 dprintk(KERN_INFO "FPR[%d] = 0x%x / 0x%llx QPR[%d] = 0x%x\n",
700 i, f, vcpu->arch.fpr[i], i, vcpu->arch.qpr[i]);
701 }
702 #endif
703
704 switch (get_op(inst)) {
705 case OP_PSQ_L:
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_load(run, vcpu, ax_rd, addr, w, i);
713 break;
714 }
715 case OP_PSQ_LU:
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_load(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 OP_PSQ_ST:
729 {
730 ulong addr = ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0;
731 bool w = inst_get_field(inst, 16, 16) ? true : false;
732 int i = inst_get_field(inst, 17, 19);
733
734 addr += get_d_signext(inst);
735 emulated = kvmppc_emulate_psq_store(run, vcpu, ax_rd, addr, w, i);
736 break;
737 }
738 case OP_PSQ_STU:
739 {
740 ulong addr = kvmppc_get_gpr(vcpu, ax_ra);
741 bool w = inst_get_field(inst, 16, 16) ? true : false;
742 int i = inst_get_field(inst, 17, 19);
743
744 addr += get_d_signext(inst);
745 emulated = kvmppc_emulate_psq_store(run, vcpu, ax_rd, addr, w, i);
746
747 if (emulated == EMULATE_DONE)
748 kvmppc_set_gpr(vcpu, ax_ra, addr);
749 break;
750 }
751 case 4:
752 /* X form */
753 switch (inst_get_field(inst, 21, 30)) {
754 case OP_4X_PS_CMPU0:
755 /* XXX */
756 emulated = EMULATE_FAIL;
757 break;
758 case OP_4X_PSQ_LX:
759 {
760 ulong addr = ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0;
761 bool w = inst_get_field(inst, 21, 21) ? true : false;
762 int i = inst_get_field(inst, 22, 24);
763
764 addr += kvmppc_get_gpr(vcpu, ax_rb);
765 emulated = kvmppc_emulate_psq_load(run, vcpu, ax_rd, addr, w, i);
766 break;
767 }
768 case OP_4X_PS_CMPO0:
769 /* XXX */
770 emulated = EMULATE_FAIL;
771 break;
772 case OP_4X_PSQ_LUX:
773 {
774 ulong addr = kvmppc_get_gpr(vcpu, ax_ra);
775 bool w = inst_get_field(inst, 21, 21) ? true : false;
776 int i = inst_get_field(inst, 22, 24);
777
778 addr += kvmppc_get_gpr(vcpu, ax_rb);
779 emulated = kvmppc_emulate_psq_load(run, vcpu, ax_rd, addr, w, i);
780
781 if (emulated == EMULATE_DONE)
782 kvmppc_set_gpr(vcpu, ax_ra, addr);
783 break;
784 }
785 case OP_4X_PS_NEG:
786 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_rb];
787 vcpu->arch.fpr[ax_rd] ^= 0x8000000000000000ULL;
788 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rb];
789 vcpu->arch.qpr[ax_rd] ^= 0x80000000;
790 break;
791 case OP_4X_PS_CMPU1:
792 /* XXX */
793 emulated = EMULATE_FAIL;
794 break;
795 case OP_4X_PS_MR:
796 WARN_ON(rcomp);
797 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_rb];
798 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rb];
799 break;
800 case OP_4X_PS_CMPO1:
801 /* XXX */
802 emulated = EMULATE_FAIL;
803 break;
804 case OP_4X_PS_NABS:
805 WARN_ON(rcomp);
806 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_rb];
807 vcpu->arch.fpr[ax_rd] |= 0x8000000000000000ULL;
808 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rb];
809 vcpu->arch.qpr[ax_rd] |= 0x80000000;
810 break;
811 case OP_4X_PS_ABS:
812 WARN_ON(rcomp);
813 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_rb];
814 vcpu->arch.fpr[ax_rd] &= ~0x8000000000000000ULL;
815 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rb];
816 vcpu->arch.qpr[ax_rd] &= ~0x80000000;
817 break;
818 case OP_4X_PS_MERGE00:
819 WARN_ON(rcomp);
820 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_ra];
821 /* vcpu->arch.qpr[ax_rd] = vcpu->arch.fpr[ax_rb]; */
822 cvt_df((double*)&vcpu->arch.fpr[ax_rb],
823 (float*)&vcpu->arch.qpr[ax_rd], &t);
824 break;
825 case OP_4X_PS_MERGE01:
826 WARN_ON(rcomp);
827 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_ra];
828 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rb];
829 break;
830 case OP_4X_PS_MERGE10:
831 WARN_ON(rcomp);
832 /* vcpu->arch.fpr[ax_rd] = vcpu->arch.qpr[ax_ra]; */
833 cvt_fd((float*)&vcpu->arch.qpr[ax_ra],
834 (double*)&vcpu->arch.fpr[ax_rd], &t);
835 /* vcpu->arch.qpr[ax_rd] = vcpu->arch.fpr[ax_rb]; */
836 cvt_df((double*)&vcpu->arch.fpr[ax_rb],
837 (float*)&vcpu->arch.qpr[ax_rd], &t);
838 break;
839 case OP_4X_PS_MERGE11:
840 WARN_ON(rcomp);
841 /* vcpu->arch.fpr[ax_rd] = vcpu->arch.qpr[ax_ra]; */
842 cvt_fd((float*)&vcpu->arch.qpr[ax_ra],
843 (double*)&vcpu->arch.fpr[ax_rd], &t);
844 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rb];
845 break;
846 }
847 /* XW form */
848 switch (inst_get_field(inst, 25, 30)) {
849 case OP_4XW_PSQ_STX:
850 {
851 ulong addr = ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0;
852 bool w = inst_get_field(inst, 21, 21) ? true : false;
853 int i = inst_get_field(inst, 22, 24);
854
855 addr += kvmppc_get_gpr(vcpu, ax_rb);
856 emulated = kvmppc_emulate_psq_store(run, vcpu, ax_rd, addr, w, i);
857 break;
858 }
859 case OP_4XW_PSQ_STUX:
860 {
861 ulong addr = kvmppc_get_gpr(vcpu, ax_ra);
862 bool w = inst_get_field(inst, 21, 21) ? true : false;
863 int i = inst_get_field(inst, 22, 24);
864
865 addr += kvmppc_get_gpr(vcpu, ax_rb);
866 emulated = kvmppc_emulate_psq_store(run, vcpu, ax_rd, addr, w, i);
867
868 if (emulated == EMULATE_DONE)
869 kvmppc_set_gpr(vcpu, ax_ra, addr);
870 break;
871 }
872 }
873 /* A form */
874 switch (inst_get_field(inst, 26, 30)) {
875 case OP_4A_PS_SUM1:
876 emulated = kvmppc_ps_two_in(vcpu, rcomp, ax_rd,
877 ax_rb, ax_ra, SCALAR_NO_PS0 | SCALAR_HIGH, fps_fadds);
878 vcpu->arch.fpr[ax_rd] = vcpu->arch.fpr[ax_rc];
879 break;
880 case OP_4A_PS_SUM0:
881 emulated = kvmppc_ps_two_in(vcpu, rcomp, ax_rd,
882 ax_ra, ax_rb, SCALAR_NO_PS1 | SCALAR_LOW, fps_fadds);
883 vcpu->arch.qpr[ax_rd] = vcpu->arch.qpr[ax_rc];
884 break;
885 case OP_4A_PS_MULS0:
886 emulated = kvmppc_ps_two_in(vcpu, rcomp, ax_rd,
887 ax_ra, ax_rc, SCALAR_HIGH, fps_fmuls);
888 break;
889 case OP_4A_PS_MULS1:
890 emulated = kvmppc_ps_two_in(vcpu, rcomp, ax_rd,
891 ax_ra, ax_rc, SCALAR_LOW, fps_fmuls);
892 break;
893 case OP_4A_PS_MADDS0:
894 emulated = kvmppc_ps_three_in(vcpu, rcomp, ax_rd,
895 ax_ra, ax_rc, ax_rb, SCALAR_HIGH, fps_fmadds);
896 break;
897 case OP_4A_PS_MADDS1:
898 emulated = kvmppc_ps_three_in(vcpu, rcomp, ax_rd,
899 ax_ra, ax_rc, ax_rb, SCALAR_LOW, fps_fmadds);
900 break;
901 case OP_4A_PS_DIV:
902 emulated = kvmppc_ps_two_in(vcpu, rcomp, ax_rd,
903 ax_ra, ax_rb, SCALAR_NONE, fps_fdivs);
904 break;
905 case OP_4A_PS_SUB:
906 emulated = kvmppc_ps_two_in(vcpu, rcomp, ax_rd,
907 ax_ra, ax_rb, SCALAR_NONE, fps_fsubs);
908 break;
909 case OP_4A_PS_ADD:
910 emulated = kvmppc_ps_two_in(vcpu, rcomp, ax_rd,
911 ax_ra, ax_rb, SCALAR_NONE, fps_fadds);
912 break;
913 case OP_4A_PS_SEL:
914 emulated = kvmppc_ps_three_in(vcpu, rcomp, ax_rd,
915 ax_ra, ax_rc, ax_rb, SCALAR_NONE, fps_fsel);
916 break;
917 case OP_4A_PS_RES:
918 emulated = kvmppc_ps_one_in(vcpu, rcomp, ax_rd,
919 ax_rb, fps_fres);
920 break;
921 case OP_4A_PS_MUL:
922 emulated = kvmppc_ps_two_in(vcpu, rcomp, ax_rd,
923 ax_ra, ax_rc, SCALAR_NONE, fps_fmuls);
924 break;
925 case OP_4A_PS_RSQRTE:
926 emulated = kvmppc_ps_one_in(vcpu, rcomp, ax_rd,
927 ax_rb, fps_frsqrte);
928 break;
929 case OP_4A_PS_MSUB:
930 emulated = kvmppc_ps_three_in(vcpu, rcomp, ax_rd,
931 ax_ra, ax_rc, ax_rb, SCALAR_NONE, fps_fmsubs);
932 break;
933 case OP_4A_PS_MADD:
934 emulated = kvmppc_ps_three_in(vcpu, rcomp, ax_rd,
935 ax_ra, ax_rc, ax_rb, SCALAR_NONE, fps_fmadds);
936 break;
937 case OP_4A_PS_NMSUB:
938 emulated = kvmppc_ps_three_in(vcpu, rcomp, ax_rd,
939 ax_ra, ax_rc, ax_rb, SCALAR_NONE, fps_fnmsubs);
940 break;
941 case OP_4A_PS_NMADD:
942 emulated = kvmppc_ps_three_in(vcpu, rcomp, ax_rd,
943 ax_ra, ax_rc, ax_rb, SCALAR_NONE, fps_fnmadds);
944 break;
945 }
946 break;
947
948 /* Real FPU operations */
949
950 case OP_LFS:
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_SINGLE);
956 break;
957 }
958 case OP_LFSU:
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_SINGLE);
964
965 if (emulated == EMULATE_DONE)
966 kvmppc_set_gpr(vcpu, ax_ra, addr);
967 break;
968 }
969 case OP_LFD:
970 {
971 ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) + full_d;
972
973 emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd, addr,
974 FPU_LS_DOUBLE);
975 break;
976 }
977 case OP_LFDU:
978 {
979 ulong addr = kvmppc_get_gpr(vcpu, ax_ra) + full_d;
980
981 emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd, addr,
982 FPU_LS_DOUBLE);
983
984 if (emulated == EMULATE_DONE)
985 kvmppc_set_gpr(vcpu, ax_ra, addr);
986 break;
987 }
988 case OP_STFS:
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_SINGLE);
994 break;
995 }
996 case OP_STFSU:
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_SINGLE);
1002
1003 if (emulated == EMULATE_DONE)
1004 kvmppc_set_gpr(vcpu, ax_ra, addr);
1005 break;
1006 }
1007 case OP_STFD:
1008 {
1009 ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) + full_d;
1010
1011 emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd, addr,
1012 FPU_LS_DOUBLE);
1013 break;
1014 }
1015 case OP_STFDU:
1016 {
1017 ulong addr = kvmppc_get_gpr(vcpu, ax_ra) + full_d;
1018
1019 emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd, addr,
1020 FPU_LS_DOUBLE);
1021
1022 if (emulated == EMULATE_DONE)
1023 kvmppc_set_gpr(vcpu, ax_ra, addr);
1024 break;
1025 }
1026 case 31:
1027 switch (inst_get_field(inst, 21, 30)) {
1028 case OP_31_LFSX:
1029 {
1030 ulong addr = ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0;
1031
1032 addr += kvmppc_get_gpr(vcpu, ax_rb);
1033 emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd,
1034 addr, FPU_LS_SINGLE);
1035 break;
1036 }
1037 case OP_31_LFSUX:
1038 {
1039 ulong addr = kvmppc_get_gpr(vcpu, ax_ra) +
1040 kvmppc_get_gpr(vcpu, ax_rb);
1041
1042 emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd,
1043 addr, FPU_LS_SINGLE);
1044
1045 if (emulated == EMULATE_DONE)
1046 kvmppc_set_gpr(vcpu, ax_ra, addr);
1047 break;
1048 }
1049 case OP_31_LFDX:
1050 {
1051 ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) +
1052 kvmppc_get_gpr(vcpu, ax_rb);
1053
1054 emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd,
1055 addr, FPU_LS_DOUBLE);
1056 break;
1057 }
1058 case OP_31_LFDUX:
1059 {
1060 ulong addr = kvmppc_get_gpr(vcpu, ax_ra) +
1061 kvmppc_get_gpr(vcpu, ax_rb);
1062
1063 emulated = kvmppc_emulate_fpr_load(run, vcpu, ax_rd,
1064 addr, FPU_LS_DOUBLE);
1065
1066 if (emulated == EMULATE_DONE)
1067 kvmppc_set_gpr(vcpu, ax_ra, addr);
1068 break;
1069 }
1070 case OP_31_STFSX:
1071 {
1072 ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) +
1073 kvmppc_get_gpr(vcpu, ax_rb);
1074
1075 emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd,
1076 addr, FPU_LS_SINGLE);
1077 break;
1078 }
1079 case OP_31_STFSUX:
1080 {
1081 ulong addr = kvmppc_get_gpr(vcpu, ax_ra) +
1082 kvmppc_get_gpr(vcpu, ax_rb);
1083
1084 emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd,
1085 addr, FPU_LS_SINGLE);
1086
1087 if (emulated == EMULATE_DONE)
1088 kvmppc_set_gpr(vcpu, ax_ra, addr);
1089 break;
1090 }
1091 case OP_31_STFX:
1092 {
1093 ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) +
1094 kvmppc_get_gpr(vcpu, ax_rb);
1095
1096 emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd,
1097 addr, FPU_LS_DOUBLE);
1098 break;
1099 }
1100 case OP_31_STFUX:
1101 {
1102 ulong addr = kvmppc_get_gpr(vcpu, ax_ra) +
1103 kvmppc_get_gpr(vcpu, ax_rb);
1104
1105 emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd,
1106 addr, FPU_LS_DOUBLE);
1107
1108 if (emulated == EMULATE_DONE)
1109 kvmppc_set_gpr(vcpu, ax_ra, addr);
1110 break;
1111 }
1112 case OP_31_STFIWX:
1113 {
1114 ulong addr = (ax_ra ? kvmppc_get_gpr(vcpu, ax_ra) : 0) +
1115 kvmppc_get_gpr(vcpu, ax_rb);
1116
1117 emulated = kvmppc_emulate_fpr_store(run, vcpu, ax_rd,
1118 addr,
1119 FPU_LS_SINGLE_LOW);
1120 break;
1121 }
1122 break;
1123 }
1124 break;
1125 case 59:
1126 switch (inst_get_field(inst, 21, 30)) {
1127 case OP_59_FADDS:
1128 fpd_fadds(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_b);
1129 kvmppc_sync_qpr(vcpu, ax_rd);
1130 break;
1131 case OP_59_FSUBS:
1132 fpd_fsubs(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_b);
1133 kvmppc_sync_qpr(vcpu, ax_rd);
1134 break;
1135 case OP_59_FDIVS:
1136 fpd_fdivs(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_b);
1137 kvmppc_sync_qpr(vcpu, ax_rd);
1138 break;
1139 case OP_59_FRES:
1140 fpd_fres(&vcpu->arch.fpscr, &cr, fpr_d, fpr_b);
1141 kvmppc_sync_qpr(vcpu, ax_rd);
1142 break;
1143 case OP_59_FRSQRTES:
1144 fpd_frsqrtes(&vcpu->arch.fpscr, &cr, fpr_d, fpr_b);
1145 kvmppc_sync_qpr(vcpu, ax_rd);
1146 break;
1147 }
1148 switch (inst_get_field(inst, 26, 30)) {
1149 case OP_59_FMULS:
1150 fpd_fmuls(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c);
1151 kvmppc_sync_qpr(vcpu, ax_rd);
1152 break;
1153 case OP_59_FMSUBS:
1154 fpd_fmsubs(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1155 kvmppc_sync_qpr(vcpu, ax_rd);
1156 break;
1157 case OP_59_FMADDS:
1158 fpd_fmadds(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1159 kvmppc_sync_qpr(vcpu, ax_rd);
1160 break;
1161 case OP_59_FNMSUBS:
1162 fpd_fnmsubs(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1163 kvmppc_sync_qpr(vcpu, ax_rd);
1164 break;
1165 case OP_59_FNMADDS:
1166 fpd_fnmadds(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1167 kvmppc_sync_qpr(vcpu, ax_rd);
1168 break;
1169 }
1170 break;
1171 case 63:
1172 switch (inst_get_field(inst, 21, 30)) {
1173 case OP_63_MTFSB0:
1174 case OP_63_MTFSB1:
1175 case OP_63_MCRFS:
1176 case OP_63_MTFSFI:
1177 /* XXX need to implement */
1178 break;
1179 case OP_63_MFFS:
1180 /* XXX missing CR */
1181 *fpr_d = vcpu->arch.fpscr;
1182 break;
1183 case OP_63_MTFSF:
1184 /* XXX missing fm bits */
1185 /* XXX missing CR */
1186 vcpu->arch.fpscr = *fpr_b;
1187 break;
1188 case OP_63_FCMPU:
1189 {
1190 u32 tmp_cr;
1191 u32 cr0_mask = 0xf0000000;
1192 u32 cr_shift = inst_get_field(inst, 6, 8) * 4;
1193
1194 fpd_fcmpu(&vcpu->arch.fpscr, &tmp_cr, fpr_a, fpr_b);
1195 cr &= ~(cr0_mask >> cr_shift);
1196 cr |= (cr & cr0_mask) >> cr_shift;
1197 break;
1198 }
1199 case OP_63_FCMPO:
1200 {
1201 u32 tmp_cr;
1202 u32 cr0_mask = 0xf0000000;
1203 u32 cr_shift = inst_get_field(inst, 6, 8) * 4;
1204
1205 fpd_fcmpo(&vcpu->arch.fpscr, &tmp_cr, fpr_a, fpr_b);
1206 cr &= ~(cr0_mask >> cr_shift);
1207 cr |= (cr & cr0_mask) >> cr_shift;
1208 break;
1209 }
1210 case OP_63_FNEG:
1211 fpd_fneg(&vcpu->arch.fpscr, &cr, fpr_d, fpr_b);
1212 break;
1213 case OP_63_FMR:
1214 *fpr_d = *fpr_b;
1215 break;
1216 case OP_63_FABS:
1217 fpd_fabs(&vcpu->arch.fpscr, &cr, fpr_d, fpr_b);
1218 break;
1219 case OP_63_FCPSGN:
1220 fpd_fcpsgn(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_b);
1221 break;
1222 case OP_63_FDIV:
1223 fpd_fdiv(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_b);
1224 break;
1225 case OP_63_FADD:
1226 fpd_fadd(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_b);
1227 break;
1228 case OP_63_FSUB:
1229 fpd_fsub(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_b);
1230 break;
1231 case OP_63_FCTIW:
1232 fpd_fctiw(&vcpu->arch.fpscr, &cr, fpr_d, fpr_b);
1233 break;
1234 case OP_63_FCTIWZ:
1235 fpd_fctiwz(&vcpu->arch.fpscr, &cr, fpr_d, fpr_b);
1236 break;
1237 case OP_63_FRSP:
1238 fpd_frsp(&vcpu->arch.fpscr, &cr, fpr_d, fpr_b);
1239 kvmppc_sync_qpr(vcpu, ax_rd);
1240 break;
1241 case OP_63_FRSQRTE:
1242 {
1243 double one = 1.0f;
1244
1245 /* fD = sqrt(fB) */
1246 fpd_fsqrt(&vcpu->arch.fpscr, &cr, fpr_d, fpr_b);
1247 /* fD = 1.0f / fD */
1248 fpd_fdiv(&vcpu->arch.fpscr, &cr, fpr_d, (u64*)&one, fpr_d);
1249 break;
1250 }
1251 }
1252 switch (inst_get_field(inst, 26, 30)) {
1253 case OP_63_FMUL:
1254 fpd_fmul(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c);
1255 break;
1256 case OP_63_FSEL:
1257 fpd_fsel(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1258 break;
1259 case OP_63_FMSUB:
1260 fpd_fmsub(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1261 break;
1262 case OP_63_FMADD:
1263 fpd_fmadd(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1264 break;
1265 case OP_63_FNMSUB:
1266 fpd_fnmsub(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1267 break;
1268 case OP_63_FNMADD:
1269 fpd_fnmadd(&vcpu->arch.fpscr, &cr, fpr_d, fpr_a, fpr_c, fpr_b);
1270 break;
1271 }
1272 break;
1273 }
1274
1275 #ifdef DEBUG
1276 for (i = 0; i < ARRAY_SIZE(vcpu->arch.fpr); i++) {
1277 u32 f;
1278 cvt_df((double*)&vcpu->arch.fpr[i], (float*)&f, &t);
1279 dprintk(KERN_INFO "FPR[%d] = 0x%x\n", i, f);
1280 }
1281 #endif
1282
1283 if (rcomp)
1284 kvmppc_set_cr(vcpu, cr);
1285
1286 preempt_enable();
1287
1288 return emulated;
1289 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree