1 /*
2 * PowerPC floating point and SPE emulation helpers for QEMU.
3 *
4 * Copyright (c) 2003-2007 Jocelyn Mayer
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 */
19 #include "qemu/osdep.h"
20 #include "cpu.h"
21 #include "exec/helper-proto.h"
22 #include "exec/exec-all.h"
23 #include "internal.h"
24 #include "fpu/softfloat.h"
25
float128_snan_to_qnan(float128 x)26 static inline float128 float128_snan_to_qnan(float128 x)
27 {
28 float128 r;
29
30 r.high = x.high | 0x0000800000000000;
31 r.low = x.low;
32 return r;
33 }
34
35 #define float64_snan_to_qnan(x) ((x) | 0x0008000000000000ULL)
36 #define float32_snan_to_qnan(x) ((x) | 0x00400000)
37 #define float16_snan_to_qnan(x) ((x) | 0x0200)
38
bfp32_neg(float32 a)39 static inline float32 bfp32_neg(float32 a)
40 {
41 if (unlikely(float32_is_any_nan(a))) {
42 return a;
43 } else {
44 return float32_chs(a);
45 }
46 }
47
fp_exceptions_enabled(CPUPPCState * env)48 static inline bool fp_exceptions_enabled(CPUPPCState *env)
49 {
50 #ifdef CONFIG_USER_ONLY
51 return true;
52 #else
53 return (env->msr & ((1U << MSR_FE0) | (1U << MSR_FE1))) != 0;
54 #endif
55 }
56
57 /*****************************************************************************/
58 /* Floating point operations helpers */
59
60 /*
61 * This is the non-arithmatic conversion that happens e.g. on loads.
62 * In the Power ISA pseudocode, this is called DOUBLE.
63 */
helper_todouble(uint32_t arg)64 uint64_t helper_todouble(uint32_t arg)
65 {
66 uint32_t abs_arg = arg & 0x7fffffff;
67 uint64_t ret;
68
69 if (likely(abs_arg >= 0x00800000)) {
70 if (unlikely(extract32(arg, 23, 8) == 0xff)) {
71 /* Inf or NAN. */
72 ret = (uint64_t)extract32(arg, 31, 1) << 63;
73 ret |= (uint64_t)0x7ff << 52;
74 ret |= (uint64_t)extract32(arg, 0, 23) << 29;
75 } else {
76 /* Normalized operand. */
77 ret = (uint64_t)extract32(arg, 30, 2) << 62;
78 ret |= ((extract32(arg, 30, 1) ^ 1) * (uint64_t)7) << 59;
79 ret |= (uint64_t)extract32(arg, 0, 30) << 29;
80 }
81 } else {
82 /* Zero or Denormalized operand. */
83 ret = (uint64_t)extract32(arg, 31, 1) << 63;
84 if (unlikely(abs_arg != 0)) {
85 /*
86 * Denormalized operand.
87 * Shift fraction so that the msb is in the implicit bit position.
88 * Thus, shift is in the range [1:23].
89 */
90 int shift = clz32(abs_arg) - 8;
91 /*
92 * The first 3 terms compute the float64 exponent. We then bias
93 * this result by -1 so that we can swallow the implicit bit below.
94 */
95 int exp = -126 - shift + 1023 - 1;
96
97 ret |= (uint64_t)exp << 52;
98 ret += (uint64_t)abs_arg << (52 - 23 + shift);
99 }
100 }
101 return ret;
102 }
103
104 /*
105 * This is the non-arithmatic conversion that happens e.g. on stores.
106 * In the Power ISA pseudocode, this is called SINGLE.
107 */
helper_tosingle(uint64_t arg)108 uint32_t helper_tosingle(uint64_t arg)
109 {
110 int exp = extract64(arg, 52, 11);
111 uint32_t ret;
112
113 if (likely(exp > 896)) {
114 /* No denormalization required (includes Inf, NaN). */
115 ret = extract64(arg, 62, 2) << 30;
116 ret |= extract64(arg, 29, 30);
117 } else {
118 /*
119 * Zero or Denormal result. If the exponent is in bounds for
120 * a single-precision denormal result, extract the proper
121 * bits. If the input is not zero, and the exponent is out of
122 * bounds, then the result is undefined; this underflows to
123 * zero.
124 */
125 ret = extract64(arg, 63, 1) << 31;
126 if (unlikely(exp >= 874)) {
127 /* Denormal result. */
128 ret |= ((1ULL << 52) | extract64(arg, 0, 52)) >> (896 + 30 - exp);
129 }
130 }
131 return ret;
132 }
133
ppc_float32_get_unbiased_exp(float32 f)134 static inline int ppc_float32_get_unbiased_exp(float32 f)
135 {
136 return ((f >> 23) & 0xFF) - 127;
137 }
138
ppc_float64_get_unbiased_exp(float64 f)139 static inline int ppc_float64_get_unbiased_exp(float64 f)
140 {
141 return ((f >> 52) & 0x7FF) - 1023;
142 }
143
144 #define COMPUTE_FPRF(tp) \
145 void helper_compute_fprf_##tp(CPUPPCState *env, tp arg) \
146 { \
147 bool neg = tp##_is_neg(arg); \
148 target_ulong fprf; \
149 if (likely(tp##_is_normal(arg))) { \
150 fprf = neg ? 0x08 << FPSCR_FPRF : 0x04 << FPSCR_FPRF; \
151 } else if (tp##_is_zero(arg)) { \
152 fprf = neg ? 0x12 << FPSCR_FPRF : 0x02 << FPSCR_FPRF; \
153 } else if (tp##_is_zero_or_denormal(arg)) { \
154 fprf = neg ? 0x18 << FPSCR_FPRF : 0x14 << FPSCR_FPRF; \
155 } else if (tp##_is_infinity(arg)) { \
156 fprf = neg ? 0x09 << FPSCR_FPRF : 0x05 << FPSCR_FPRF; \
157 } else { \
158 float_status dummy = { }; /* snan_bit_is_one = 0 */ \
159 if (tp##_is_signaling_nan(arg, &dummy)) { \
160 fprf = 0x00 << FPSCR_FPRF; \
161 } else { \
162 fprf = 0x11 << FPSCR_FPRF; \
163 } \
164 } \
165 env->fpscr = (env->fpscr & ~FP_FPRF) | fprf; \
166 }
167
168 COMPUTE_FPRF(float16)
COMPUTE_FPRF(float32)169 COMPUTE_FPRF(float32)
170 COMPUTE_FPRF(float64)
171 COMPUTE_FPRF(float128)
172
173 /* Floating-point invalid operations exception */
174 static void finish_invalid_op_excp(CPUPPCState *env, int op, uintptr_t retaddr)
175 {
176 /* Update the floating-point invalid operation summary */
177 env->fpscr |= FP_VX;
178 /* Update the floating-point exception summary */
179 env->fpscr |= FP_FX;
180 if (env->fpscr & FP_VE) {
181 /* Update the floating-point enabled exception summary */
182 env->fpscr |= FP_FEX;
183 if (fp_exceptions_enabled(env)) {
184 raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM,
185 POWERPC_EXCP_FP | op, retaddr);
186 }
187 }
188 }
189
finish_invalid_op_arith(CPUPPCState * env,int op,bool set_fpcc,uintptr_t retaddr)190 static void finish_invalid_op_arith(CPUPPCState *env, int op,
191 bool set_fpcc, uintptr_t retaddr)
192 {
193 env->fpscr &= ~(FP_FR | FP_FI);
194 if (!(env->fpscr & FP_VE)) {
195 if (set_fpcc) {
196 env->fpscr &= ~FP_FPCC;
197 env->fpscr |= (FP_C | FP_FU);
198 }
199 }
200 finish_invalid_op_excp(env, op, retaddr);
201 }
202
203 /* Signalling NaN */
float_invalid_op_vxsnan(CPUPPCState * env,uintptr_t retaddr)204 static void float_invalid_op_vxsnan(CPUPPCState *env, uintptr_t retaddr)
205 {
206 env->fpscr |= FP_VXSNAN;
207 finish_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, retaddr);
208 }
209
210 /* Magnitude subtraction of infinities */
float_invalid_op_vxisi(CPUPPCState * env,bool set_fpcc,uintptr_t retaddr)211 static void float_invalid_op_vxisi(CPUPPCState *env, bool set_fpcc,
212 uintptr_t retaddr)
213 {
214 env->fpscr |= FP_VXISI;
215 finish_invalid_op_arith(env, POWERPC_EXCP_FP_VXISI, set_fpcc, retaddr);
216 }
217
218 /* Division of infinity by infinity */
float_invalid_op_vxidi(CPUPPCState * env,bool set_fpcc,uintptr_t retaddr)219 static void float_invalid_op_vxidi(CPUPPCState *env, bool set_fpcc,
220 uintptr_t retaddr)
221 {
222 env->fpscr |= FP_VXIDI;
223 finish_invalid_op_arith(env, POWERPC_EXCP_FP_VXIDI, set_fpcc, retaddr);
224 }
225
226 /* Division of zero by zero */
float_invalid_op_vxzdz(CPUPPCState * env,bool set_fpcc,uintptr_t retaddr)227 static void float_invalid_op_vxzdz(CPUPPCState *env, bool set_fpcc,
228 uintptr_t retaddr)
229 {
230 env->fpscr |= FP_VXZDZ;
231 finish_invalid_op_arith(env, POWERPC_EXCP_FP_VXZDZ, set_fpcc, retaddr);
232 }
233
234 /* Multiplication of zero by infinity */
float_invalid_op_vximz(CPUPPCState * env,bool set_fpcc,uintptr_t retaddr)235 static void float_invalid_op_vximz(CPUPPCState *env, bool set_fpcc,
236 uintptr_t retaddr)
237 {
238 env->fpscr |= FP_VXIMZ;
239 finish_invalid_op_arith(env, POWERPC_EXCP_FP_VXIMZ, set_fpcc, retaddr);
240 }
241
242 /* Square root of a negative number */
float_invalid_op_vxsqrt(CPUPPCState * env,bool set_fpcc,uintptr_t retaddr)243 static void float_invalid_op_vxsqrt(CPUPPCState *env, bool set_fpcc,
244 uintptr_t retaddr)
245 {
246 env->fpscr |= FP_VXSQRT;
247 finish_invalid_op_arith(env, POWERPC_EXCP_FP_VXSQRT, set_fpcc, retaddr);
248 }
249
250 /* Ordered comparison of NaN */
float_invalid_op_vxvc(CPUPPCState * env,bool set_fpcc,uintptr_t retaddr)251 static void float_invalid_op_vxvc(CPUPPCState *env, bool set_fpcc,
252 uintptr_t retaddr)
253 {
254 env->fpscr |= FP_VXVC;
255 if (set_fpcc) {
256 env->fpscr &= ~FP_FPCC;
257 env->fpscr |= (FP_C | FP_FU);
258 }
259 /* Update the floating-point invalid operation summary */
260 env->fpscr |= FP_VX;
261 /* Update the floating-point exception summary */
262 env->fpscr |= FP_FX;
263 /* We must update the target FPR before raising the exception */
264 if (env->fpscr & FP_VE) {
265 CPUState *cs = env_cpu(env);
266
267 cs->exception_index = POWERPC_EXCP_PROGRAM;
268 env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_VXVC;
269 /* Update the floating-point enabled exception summary */
270 env->fpscr |= FP_FEX;
271 /* Exception is deferred */
272 }
273 }
274
275 /* Invalid conversion */
float_invalid_op_vxcvi(CPUPPCState * env,bool set_fpcc,uintptr_t retaddr)276 static void float_invalid_op_vxcvi(CPUPPCState *env, bool set_fpcc,
277 uintptr_t retaddr)
278 {
279 env->fpscr |= FP_VXCVI;
280 env->fpscr &= ~(FP_FR | FP_FI);
281 if (!(env->fpscr & FP_VE)) {
282 if (set_fpcc) {
283 env->fpscr &= ~FP_FPCC;
284 env->fpscr |= (FP_C | FP_FU);
285 }
286 }
287 finish_invalid_op_excp(env, POWERPC_EXCP_FP_VXCVI, retaddr);
288 }
289
float_zero_divide_excp(CPUPPCState * env,uintptr_t raddr)290 static inline void float_zero_divide_excp(CPUPPCState *env, uintptr_t raddr)
291 {
292 env->fpscr |= FP_ZX;
293 env->fpscr &= ~(FP_FR | FP_FI);
294 /* Update the floating-point exception summary */
295 env->fpscr |= FP_FX;
296 if (env->fpscr & FP_ZE) {
297 /* Update the floating-point enabled exception summary */
298 env->fpscr |= FP_FEX;
299 if (fp_exceptions_enabled(env)) {
300 raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM,
301 POWERPC_EXCP_FP | POWERPC_EXCP_FP_ZX,
302 raddr);
303 }
304 }
305 }
306
float_overflow_excp(CPUPPCState * env)307 static inline int float_overflow_excp(CPUPPCState *env)
308 {
309 CPUState *cs = env_cpu(env);
310
311 env->fpscr |= FP_OX;
312 /* Update the floating-point exception summary */
313 env->fpscr |= FP_FX;
314
315 bool overflow_enabled = !!(env->fpscr & FP_OE);
316 if (overflow_enabled) {
317 /* Update the floating-point enabled exception summary */
318 env->fpscr |= FP_FEX;
319 /* We must update the target FPR before raising the exception */
320 cs->exception_index = POWERPC_EXCP_PROGRAM;
321 env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_OX;
322 }
323
324 return overflow_enabled ? 0 : float_flag_inexact;
325 }
326
float_underflow_excp(CPUPPCState * env)327 static inline void float_underflow_excp(CPUPPCState *env)
328 {
329 CPUState *cs = env_cpu(env);
330
331 env->fpscr |= FP_UX;
332 /* Update the floating-point exception summary */
333 env->fpscr |= FP_FX;
334 if (env->fpscr & FP_UE) {
335 /* Update the floating-point enabled exception summary */
336 env->fpscr |= FP_FEX;
337 /* We must update the target FPR before raising the exception */
338 cs->exception_index = POWERPC_EXCP_PROGRAM;
339 env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_UX;
340 }
341 }
342
float_inexact_excp(CPUPPCState * env)343 static inline void float_inexact_excp(CPUPPCState *env)
344 {
345 CPUState *cs = env_cpu(env);
346
347 env->fpscr |= FP_XX;
348 /* Update the floating-point exception summary */
349 env->fpscr |= FP_FX;
350 if (env->fpscr & FP_XE) {
351 /* Update the floating-point enabled exception summary */
352 env->fpscr |= FP_FEX;
353 /* We must update the target FPR before raising the exception */
354 cs->exception_index = POWERPC_EXCP_PROGRAM;
355 env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_XX;
356 }
357 }
358
helper_fpscr_clrbit(CPUPPCState * env,uint32_t bit)359 void helper_fpscr_clrbit(CPUPPCState *env, uint32_t bit)
360 {
361 uint32_t mask = 1u << bit;
362 if (env->fpscr & mask) {
363 ppc_store_fpscr(env, env->fpscr & ~(target_ulong)mask);
364 }
365 }
366
helper_fpscr_setbit(CPUPPCState * env,uint32_t bit)367 void helper_fpscr_setbit(CPUPPCState *env, uint32_t bit)
368 {
369 uint32_t mask = 1u << bit;
370 if (!(env->fpscr & mask)) {
371 ppc_store_fpscr(env, env->fpscr | mask);
372 }
373 }
374
helper_store_fpscr(CPUPPCState * env,uint64_t val,uint32_t nibbles)375 void helper_store_fpscr(CPUPPCState *env, uint64_t val, uint32_t nibbles)
376 {
377 target_ulong mask = 0;
378 int i;
379
380 /* TODO: push this extension back to translation time */
381 for (i = 0; i < sizeof(target_ulong) * 2; i++) {
382 if (nibbles & (1 << i)) {
383 mask |= (target_ulong) 0xf << (4 * i);
384 }
385 }
386 val = (val & mask) | (env->fpscr & ~mask);
387 ppc_store_fpscr(env, val);
388 }
389
do_fpscr_check_status(CPUPPCState * env,uintptr_t raddr)390 static void do_fpscr_check_status(CPUPPCState *env, uintptr_t raddr)
391 {
392 CPUState *cs = env_cpu(env);
393 target_ulong fpscr = env->fpscr;
394 int error = 0;
395
396 if ((fpscr & FP_OX) && (fpscr & FP_OE)) {
397 error = POWERPC_EXCP_FP_OX;
398 } else if ((fpscr & FP_UX) && (fpscr & FP_UE)) {
399 error = POWERPC_EXCP_FP_UX;
400 } else if ((fpscr & FP_XX) && (fpscr & FP_XE)) {
401 error = POWERPC_EXCP_FP_XX;
402 } else if ((fpscr & FP_ZX) && (fpscr & FP_ZE)) {
403 error = POWERPC_EXCP_FP_ZX;
404 } else if (fpscr & FP_VE) {
405 if (fpscr & FP_VXSOFT) {
406 error = POWERPC_EXCP_FP_VXSOFT;
407 } else if (fpscr & FP_VXSNAN) {
408 error = POWERPC_EXCP_FP_VXSNAN;
409 } else if (fpscr & FP_VXISI) {
410 error = POWERPC_EXCP_FP_VXISI;
411 } else if (fpscr & FP_VXIDI) {
412 error = POWERPC_EXCP_FP_VXIDI;
413 } else if (fpscr & FP_VXZDZ) {
414 error = POWERPC_EXCP_FP_VXZDZ;
415 } else if (fpscr & FP_VXIMZ) {
416 error = POWERPC_EXCP_FP_VXIMZ;
417 } else if (fpscr & FP_VXVC) {
418 error = POWERPC_EXCP_FP_VXVC;
419 } else if (fpscr & FP_VXSQRT) {
420 error = POWERPC_EXCP_FP_VXSQRT;
421 } else if (fpscr & FP_VXCVI) {
422 error = POWERPC_EXCP_FP_VXCVI;
423 } else {
424 return;
425 }
426 } else {
427 return;
428 }
429 cs->exception_index = POWERPC_EXCP_PROGRAM;
430 env->error_code = error | POWERPC_EXCP_FP;
431 env->fpscr |= FP_FEX;
432 /* Deferred floating-point exception after target FPSCR update */
433 if (fp_exceptions_enabled(env)) {
434 raise_exception_err_ra(env, cs->exception_index,
435 env->error_code, raddr);
436 }
437 }
438
helper_fpscr_check_status(CPUPPCState * env)439 void helper_fpscr_check_status(CPUPPCState *env)
440 {
441 do_fpscr_check_status(env, GETPC());
442 }
443
do_float_check_status(CPUPPCState * env,bool change_fi,uintptr_t raddr)444 static void do_float_check_status(CPUPPCState *env, bool change_fi,
445 uintptr_t raddr)
446 {
447 CPUState *cs = env_cpu(env);
448 int status = get_float_exception_flags(&env->fp_status);
449
450 if (status & float_flag_overflow) {
451 status |= float_overflow_excp(env);
452 } else if (status & float_flag_underflow) {
453 float_underflow_excp(env);
454 }
455 if (status & float_flag_inexact) {
456 float_inexact_excp(env);
457 }
458 if (change_fi) {
459 env->fpscr = FIELD_DP64(env->fpscr, FPSCR, FI,
460 !!(status & float_flag_inexact));
461 }
462
463 if (cs->exception_index == POWERPC_EXCP_PROGRAM &&
464 (env->error_code & POWERPC_EXCP_FP)) {
465 /* Deferred floating-point exception after target FPR update */
466 if (fp_exceptions_enabled(env)) {
467 raise_exception_err_ra(env, cs->exception_index,
468 env->error_code, raddr);
469 }
470 }
471 }
472
helper_float_check_status(CPUPPCState * env)473 void helper_float_check_status(CPUPPCState *env)
474 {
475 do_float_check_status(env, true, GETPC());
476 }
477
helper_reset_fpstatus(CPUPPCState * env)478 void helper_reset_fpstatus(CPUPPCState *env)
479 {
480 set_float_exception_flags(0, &env->fp_status);
481 }
482
float_invalid_op_addsub(CPUPPCState * env,int flags,bool set_fpcc,uintptr_t retaddr)483 static void float_invalid_op_addsub(CPUPPCState *env, int flags,
484 bool set_fpcc, uintptr_t retaddr)
485 {
486 if (flags & float_flag_invalid_isi) {
487 float_invalid_op_vxisi(env, set_fpcc, retaddr);
488 } else if (flags & float_flag_invalid_snan) {
489 float_invalid_op_vxsnan(env, retaddr);
490 }
491 }
492
addsub_flags_handler(CPUPPCState * env,int flags,uintptr_t ra)493 static inline void addsub_flags_handler(CPUPPCState *env, int flags,
494 uintptr_t ra)
495 {
496 if (unlikely(flags & float_flag_invalid)) {
497 float_invalid_op_addsub(env, flags, 1, ra);
498 }
499 }
500
float_invalid_op_mul(CPUPPCState * env,int flags,bool set_fprc,uintptr_t retaddr)501 static void float_invalid_op_mul(CPUPPCState *env, int flags,
502 bool set_fprc, uintptr_t retaddr)
503 {
504 if (flags & float_flag_invalid_imz) {
505 float_invalid_op_vximz(env, set_fprc, retaddr);
506 } else if (flags & float_flag_invalid_snan) {
507 float_invalid_op_vxsnan(env, retaddr);
508 }
509 }
510
mul_flags_handler(CPUPPCState * env,int flags,uintptr_t ra)511 static inline void mul_flags_handler(CPUPPCState *env, int flags, uintptr_t ra)
512 {
513 if (unlikely(flags & float_flag_invalid)) {
514 float_invalid_op_mul(env, flags, 1, ra);
515 }
516 }
517
float_invalid_op_div(CPUPPCState * env,int flags,bool set_fprc,uintptr_t retaddr)518 static void float_invalid_op_div(CPUPPCState *env, int flags,
519 bool set_fprc, uintptr_t retaddr)
520 {
521 if (flags & float_flag_invalid_idi) {
522 float_invalid_op_vxidi(env, set_fprc, retaddr);
523 } else if (flags & float_flag_invalid_zdz) {
524 float_invalid_op_vxzdz(env, set_fprc, retaddr);
525 } else if (flags & float_flag_invalid_snan) {
526 float_invalid_op_vxsnan(env, retaddr);
527 }
528 }
529
div_flags_handler(CPUPPCState * env,int flags,uintptr_t ra)530 static inline void div_flags_handler(CPUPPCState *env, int flags, uintptr_t ra)
531 {
532 if (unlikely(flags & float_flag_invalid)) {
533 float_invalid_op_div(env, flags, 1, ra);
534 }
535 if (unlikely(flags & float_flag_divbyzero)) {
536 float_zero_divide_excp(env, ra);
537 }
538 }
539
float_invalid_cvt(CPUPPCState * env,int flags,uint64_t ret,uint64_t ret_nan,bool set_fprc,uintptr_t retaddr)540 static uint64_t float_invalid_cvt(CPUPPCState *env, int flags,
541 uint64_t ret, uint64_t ret_nan,
542 bool set_fprc, uintptr_t retaddr)
543 {
544 /*
545 * VXCVI is different from most in that it sets two exception bits,
546 * VXCVI and VXSNAN for an SNaN input.
547 */
548 if (flags & float_flag_invalid_snan) {
549 env->fpscr |= FP_VXSNAN;
550 }
551 float_invalid_op_vxcvi(env, set_fprc, retaddr);
552
553 return flags & float_flag_invalid_cvti ? ret : ret_nan;
554 }
555
556 #define FPU_FCTI(op, cvt, nanval) \
557 uint64_t helper_##op(CPUPPCState *env, float64 arg) \
558 { \
559 uint64_t ret = float64_to_##cvt(arg, &env->fp_status); \
560 int flags = get_float_exception_flags(&env->fp_status); \
561 if (unlikely(flags & float_flag_invalid)) { \
562 ret = float_invalid_cvt(env, flags, ret, nanval, 1, GETPC()); \
563 } \
564 return ret; \
565 }
566
567 FPU_FCTI(fctiw, int32, 0x80000000U)
568 FPU_FCTI(fctiwz, int32_round_to_zero, 0x80000000U)
569 FPU_FCTI(fctiwu, uint32, 0x00000000U)
570 FPU_FCTI(fctiwuz, uint32_round_to_zero, 0x00000000U)
571 FPU_FCTI(fctid, int64, 0x8000000000000000ULL)
572 FPU_FCTI(fctidz, int64_round_to_zero, 0x8000000000000000ULL)
573 FPU_FCTI(fctidu, uint64, 0x0000000000000000ULL)
574 FPU_FCTI(fctiduz, uint64_round_to_zero, 0x0000000000000000ULL)
575
576 #define FPU_FCFI(op, cvtr, is_single) \
577 uint64_t helper_##op(CPUPPCState *env, uint64_t arg) \
578 { \
579 CPU_DoubleU farg; \
580 \
581 if (is_single) { \
582 float32 tmp = cvtr(arg, &env->fp_status); \
583 farg.d = float32_to_float64(tmp, &env->fp_status); \
584 } else { \
585 farg.d = cvtr(arg, &env->fp_status); \
586 } \
587 do_float_check_status(env, true, GETPC()); \
588 return farg.ll; \
589 }
590
591 FPU_FCFI(fcfid, int64_to_float64, 0)
592 FPU_FCFI(fcfids, int64_to_float32, 1)
593 FPU_FCFI(fcfidu, uint64_to_float64, 0)
594 FPU_FCFI(fcfidus, uint64_to_float32, 1)
595
do_fri(CPUPPCState * env,uint64_t arg,FloatRoundMode rounding_mode)596 static uint64_t do_fri(CPUPPCState *env, uint64_t arg,
597 FloatRoundMode rounding_mode)
598 {
599 FloatRoundMode old_rounding_mode = get_float_rounding_mode(&env->fp_status);
600 int flags;
601
602 set_float_rounding_mode(rounding_mode, &env->fp_status);
603 arg = float64_round_to_int(arg, &env->fp_status);
604 set_float_rounding_mode(old_rounding_mode, &env->fp_status);
605
606 flags = get_float_exception_flags(&env->fp_status);
607 if (flags & float_flag_invalid_snan) {
608 float_invalid_op_vxsnan(env, GETPC());
609 }
610
611 /* fri* does not set FPSCR[XX] */
612 set_float_exception_flags(flags & ~float_flag_inexact, &env->fp_status);
613 do_float_check_status(env, true, GETPC());
614
615 return arg;
616 }
617
helper_frin(CPUPPCState * env,uint64_t arg)618 uint64_t helper_frin(CPUPPCState *env, uint64_t arg)
619 {
620 return do_fri(env, arg, float_round_ties_away);
621 }
622
helper_friz(CPUPPCState * env,uint64_t arg)623 uint64_t helper_friz(CPUPPCState *env, uint64_t arg)
624 {
625 return do_fri(env, arg, float_round_to_zero);
626 }
627
helper_frip(CPUPPCState * env,uint64_t arg)628 uint64_t helper_frip(CPUPPCState *env, uint64_t arg)
629 {
630 return do_fri(env, arg, float_round_up);
631 }
632
helper_frim(CPUPPCState * env,uint64_t arg)633 uint64_t helper_frim(CPUPPCState *env, uint64_t arg)
634 {
635 return do_fri(env, arg, float_round_down);
636 }
637
float_invalid_op_madd(CPUPPCState * env,int flags,bool set_fpcc,uintptr_t retaddr)638 static void float_invalid_op_madd(CPUPPCState *env, int flags,
639 bool set_fpcc, uintptr_t retaddr)
640 {
641 if (flags & float_flag_invalid_imz) {
642 float_invalid_op_vximz(env, set_fpcc, retaddr);
643 } else {
644 float_invalid_op_addsub(env, flags, set_fpcc, retaddr);
645 }
646 }
647
do_fmadd(CPUPPCState * env,float64 a,float64 b,float64 c,int madd_flags,uintptr_t retaddr)648 static float64 do_fmadd(CPUPPCState *env, float64 a, float64 b,
649 float64 c, int madd_flags, uintptr_t retaddr)
650 {
651 float64 ret = float64_muladd(a, b, c, madd_flags, &env->fp_status);
652 int flags = get_float_exception_flags(&env->fp_status);
653
654 if (unlikely(flags & float_flag_invalid)) {
655 float_invalid_op_madd(env, flags, 1, retaddr);
656 }
657 return ret;
658 }
659
do_fmadds(CPUPPCState * env,float64 a,float64 b,float64 c,int madd_flags,uintptr_t retaddr)660 static uint64_t do_fmadds(CPUPPCState *env, float64 a, float64 b,
661 float64 c, int madd_flags, uintptr_t retaddr)
662 {
663 float64 ret = float64r32_muladd(a, b, c, madd_flags, &env->fp_status);
664 int flags = get_float_exception_flags(&env->fp_status);
665
666 if (unlikely(flags & float_flag_invalid)) {
667 float_invalid_op_madd(env, flags, 1, retaddr);
668 }
669 return ret;
670 }
671
672 #define FPU_FMADD(op, madd_flags) \
673 uint64_t helper_##op(CPUPPCState *env, uint64_t arg1, \
674 uint64_t arg2, uint64_t arg3) \
675 { return do_fmadd(env, arg1, arg2, arg3, madd_flags, GETPC()); } \
676 uint64_t helper_##op##S(CPUPPCState *env, uint64_t arg1, \
677 uint64_t arg2, uint64_t arg3) \
678 { return do_fmadds(env, arg1, arg2, arg3, madd_flags, GETPC()); }
679
680 #define MADD_FLGS 0
681 #define MSUB_FLGS float_muladd_negate_c
682 #define NMADD_FLGS float_muladd_negate_result
683 #define NMSUB_FLGS (float_muladd_negate_c | float_muladd_negate_result)
684
FPU_FMADD(FMADD,MADD_FLGS)685 FPU_FMADD(FMADD, MADD_FLGS)
686 FPU_FMADD(FNMADD, NMADD_FLGS)
687 FPU_FMADD(FMSUB, MSUB_FLGS)
688 FPU_FMADD(FNMSUB, NMSUB_FLGS)
689
690 /* frsp - frsp. */
691 static uint64_t do_frsp(CPUPPCState *env, uint64_t arg, uintptr_t retaddr)
692 {
693 float32 f32 = float64_to_float32(arg, &env->fp_status);
694 int flags = get_float_exception_flags(&env->fp_status);
695
696 if (unlikely(flags & float_flag_invalid_snan)) {
697 float_invalid_op_vxsnan(env, retaddr);
698 }
699 return helper_todouble(f32);
700 }
701
helper_frsp(CPUPPCState * env,uint64_t arg)702 uint64_t helper_frsp(CPUPPCState *env, uint64_t arg)
703 {
704 return do_frsp(env, arg, GETPC());
705 }
706
float_invalid_op_sqrt(CPUPPCState * env,int flags,bool set_fpcc,uintptr_t retaddr)707 static void float_invalid_op_sqrt(CPUPPCState *env, int flags,
708 bool set_fpcc, uintptr_t retaddr)
709 {
710 if (unlikely(flags & float_flag_invalid_sqrt)) {
711 float_invalid_op_vxsqrt(env, set_fpcc, retaddr);
712 } else if (unlikely(flags & float_flag_invalid_snan)) {
713 float_invalid_op_vxsnan(env, retaddr);
714 }
715 }
716
717 #define FPU_FSQRT(name, op) \
718 float64 helper_##name(CPUPPCState *env, float64 arg) \
719 { \
720 float64 ret = op(arg, &env->fp_status); \
721 int flags = get_float_exception_flags(&env->fp_status); \
722 \
723 if (unlikely(flags & float_flag_invalid)) { \
724 float_invalid_op_sqrt(env, flags, 1, GETPC()); \
725 } \
726 \
727 return ret; \
728 }
729
FPU_FSQRT(FSQRT,float64_sqrt)730 FPU_FSQRT(FSQRT, float64_sqrt)
731 FPU_FSQRT(FSQRTS, float64r32_sqrt)
732
733 #define FPU_FRE(name, op) \
734 float64 helper_##name(CPUPPCState *env, float64 arg) \
735 { \
736 /* "Estimate" the reciprocal with actual division. */ \
737 float64 ret = op(float64_one, arg, &env->fp_status); \
738 int flags = get_float_exception_flags(&env->fp_status); \
739 \
740 if (unlikely(flags & float_flag_invalid_snan)) { \
741 float_invalid_op_vxsnan(env, GETPC()); \
742 } \
743 if (unlikely(flags & float_flag_divbyzero)) { \
744 float_zero_divide_excp(env, GETPC()); \
745 /* For FPSCR.ZE == 0, the result is 1/2. */ \
746 ret = float64_set_sign(float64_half, float64_is_neg(arg)); \
747 } \
748 \
749 return ret; \
750 }
751
752 #define FPU_FRSQRTE(name, op) \
753 float64 helper_##name(CPUPPCState *env, float64 arg) \
754 { \
755 /* "Estimate" the reciprocal with actual division. */ \
756 float64 rets = float64_sqrt(arg, &env->fp_status); \
757 float64 retd = op(float64_one, rets, &env->fp_status); \
758 int flags = get_float_exception_flags(&env->fp_status); \
759 \
760 if (unlikely(flags & float_flag_invalid)) { \
761 float_invalid_op_sqrt(env, flags, 1, GETPC()); \
762 } \
763 if (unlikely(flags & float_flag_divbyzero)) { \
764 /* Reciprocal of (square root of) zero. */ \
765 float_zero_divide_excp(env, GETPC()); \
766 } \
767 \
768 return retd; \
769 }
770
771 #define FPU_HELPER(name, op, flags_handler) \
772 float64 helper_##name(CPUPPCState *env, float64 arg1, float64 arg2) \
773 { \
774 float64 ret = op(arg1, arg2, &env->fp_status); \
775 int flags = get_float_exception_flags(&env->fp_status); \
776 uintptr_t ra = GETPC(); \
777 flags_handler(env, flags, ra); \
778 return ret; \
779 }
780
781 FPU_FRE(FRE, float64_div)
782 FPU_FRE(FRES, float64r32_div)
783 FPU_FRSQRTE(FRSQRTE, float64_div)
784 FPU_FRSQRTE(FRSQRTES, float64r32_div)
785 FPU_HELPER(FADD, float64_add, addsub_flags_handler)
786 FPU_HELPER(FADDS, float64r32_add, addsub_flags_handler)
787 FPU_HELPER(FSUB, float64_sub, addsub_flags_handler)
788 FPU_HELPER(FSUBS, float64r32_sub, addsub_flags_handler)
789 FPU_HELPER(FMUL, float64_mul, mul_flags_handler)
790 FPU_HELPER(FMULS, float64r32_mul, mul_flags_handler)
791 FPU_HELPER(FDIV, float64_div, div_flags_handler)
792 FPU_HELPER(FDIVS, float64r32_div, div_flags_handler)
793
794 /* fsel - fsel. */
795 uint64_t helper_FSEL(uint64_t a, uint64_t b, uint64_t c)
796 {
797 CPU_DoubleU fa;
798
799 fa.ll = a;
800
801 if ((!float64_is_neg(fa.d) || float64_is_zero(fa.d)) &&
802 !float64_is_any_nan(fa.d)) {
803 return c;
804 } else {
805 return b;
806 }
807 }
808
helper_FTDIV(uint64_t fra,uint64_t frb)809 uint32_t helper_FTDIV(uint64_t fra, uint64_t frb)
810 {
811 int fe_flag = 0;
812 int fg_flag = 0;
813
814 if (unlikely(float64_is_infinity(fra) ||
815 float64_is_infinity(frb) ||
816 float64_is_zero(frb))) {
817 fe_flag = 1;
818 fg_flag = 1;
819 } else {
820 int e_a = ppc_float64_get_unbiased_exp(fra);
821 int e_b = ppc_float64_get_unbiased_exp(frb);
822
823 if (unlikely(float64_is_any_nan(fra) ||
824 float64_is_any_nan(frb))) {
825 fe_flag = 1;
826 } else if ((e_b <= -1022) || (e_b >= 1021)) {
827 fe_flag = 1;
828 } else if (!float64_is_zero(fra) &&
829 (((e_a - e_b) >= 1023) ||
830 ((e_a - e_b) <= -1021) ||
831 (e_a <= -970))) {
832 fe_flag = 1;
833 }
834
835 if (unlikely(float64_is_zero_or_denormal(frb))) {
836 /* XB is not zero because of the above check and */
837 /* so must be denormalized. */
838 fg_flag = 1;
839 }
840 }
841
842 return 0x8 | (fg_flag ? 4 : 0) | (fe_flag ? 2 : 0);
843 }
844
helper_FTSQRT(uint64_t frb)845 uint32_t helper_FTSQRT(uint64_t frb)
846 {
847 int fe_flag = 0;
848 int fg_flag = 0;
849
850 if (unlikely(float64_is_infinity(frb) || float64_is_zero(frb))) {
851 fe_flag = 1;
852 fg_flag = 1;
853 } else {
854 int e_b = ppc_float64_get_unbiased_exp(frb);
855
856 if (unlikely(float64_is_any_nan(frb))) {
857 fe_flag = 1;
858 } else if (unlikely(float64_is_zero(frb))) {
859 fe_flag = 1;
860 } else if (unlikely(float64_is_neg(frb))) {
861 fe_flag = 1;
862 } else if (!float64_is_zero(frb) && (e_b <= (-1022 + 52))) {
863 fe_flag = 1;
864 }
865
866 if (unlikely(float64_is_zero_or_denormal(frb))) {
867 /* XB is not zero because of the above check and */
868 /* therefore must be denormalized. */
869 fg_flag = 1;
870 }
871 }
872
873 return 0x8 | (fg_flag ? 4 : 0) | (fe_flag ? 2 : 0);
874 }
875
helper_fcmpu(CPUPPCState * env,uint64_t arg1,uint64_t arg2,uint32_t crfD)876 void helper_fcmpu(CPUPPCState *env, uint64_t arg1, uint64_t arg2,
877 uint32_t crfD)
878 {
879 CPU_DoubleU farg1, farg2;
880 uint32_t ret = 0;
881
882 farg1.ll = arg1;
883 farg2.ll = arg2;
884
885 if (unlikely(float64_is_any_nan(farg1.d) ||
886 float64_is_any_nan(farg2.d))) {
887 ret = 0x01UL;
888 } else if (float64_lt(farg1.d, farg2.d, &env->fp_status)) {
889 ret = 0x08UL;
890 } else if (!float64_le(farg1.d, farg2.d, &env->fp_status)) {
891 ret = 0x04UL;
892 } else {
893 ret = 0x02UL;
894 }
895
896 env->fpscr &= ~FP_FPCC;
897 env->fpscr |= ret << FPSCR_FPCC;
898 env->crf[crfD] = ret;
899 if (unlikely(ret == 0x01UL
900 && (float64_is_signaling_nan(farg1.d, &env->fp_status) ||
901 float64_is_signaling_nan(farg2.d, &env->fp_status)))) {
902 /* sNaN comparison */
903 float_invalid_op_vxsnan(env, GETPC());
904 }
905 }
906
helper_fcmpo(CPUPPCState * env,uint64_t arg1,uint64_t arg2,uint32_t crfD)907 void helper_fcmpo(CPUPPCState *env, uint64_t arg1, uint64_t arg2,
908 uint32_t crfD)
909 {
910 CPU_DoubleU farg1, farg2;
911 uint32_t ret = 0;
912
913 farg1.ll = arg1;
914 farg2.ll = arg2;
915
916 if (unlikely(float64_is_any_nan(farg1.d) ||
917 float64_is_any_nan(farg2.d))) {
918 ret = 0x01UL;
919 } else if (float64_lt(farg1.d, farg2.d, &env->fp_status)) {
920 ret = 0x08UL;
921 } else if (!float64_le(farg1.d, farg2.d, &env->fp_status)) {
922 ret = 0x04UL;
923 } else {
924 ret = 0x02UL;
925 }
926
927 env->fpscr &= ~FP_FPCC;
928 env->fpscr |= ret << FPSCR_FPCC;
929 env->crf[crfD] = (uint32_t) ret;
930 if (unlikely(ret == 0x01UL)) {
931 float_invalid_op_vxvc(env, 1, GETPC());
932 if (float64_is_signaling_nan(farg1.d, &env->fp_status) ||
933 float64_is_signaling_nan(farg2.d, &env->fp_status)) {
934 /* sNaN comparison */
935 float_invalid_op_vxsnan(env, GETPC());
936 }
937 }
938 }
939
940 /* Single-precision floating-point conversions */
efscfsi(CPUPPCState * env,uint32_t val)941 static inline uint32_t efscfsi(CPUPPCState *env, uint32_t val)
942 {
943 CPU_FloatU u;
944
945 u.f = int32_to_float32(val, &env->vec_status);
946
947 return u.l;
948 }
949
efscfui(CPUPPCState * env,uint32_t val)950 static inline uint32_t efscfui(CPUPPCState *env, uint32_t val)
951 {
952 CPU_FloatU u;
953
954 u.f = uint32_to_float32(val, &env->vec_status);
955
956 return u.l;
957 }
958
efsctsi(CPUPPCState * env,uint32_t val)959 static inline int32_t efsctsi(CPUPPCState *env, uint32_t val)
960 {
961 CPU_FloatU u;
962
963 u.l = val;
964 /* NaN are not treated the same way IEEE 754 does */
965 if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
966 return 0;
967 }
968
969 return float32_to_int32(u.f, &env->vec_status);
970 }
971
efsctui(CPUPPCState * env,uint32_t val)972 static inline uint32_t efsctui(CPUPPCState *env, uint32_t val)
973 {
974 CPU_FloatU u;
975
976 u.l = val;
977 /* NaN are not treated the same way IEEE 754 does */
978 if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
979 return 0;
980 }
981
982 return float32_to_uint32(u.f, &env->vec_status);
983 }
984
efsctsiz(CPUPPCState * env,uint32_t val)985 static inline uint32_t efsctsiz(CPUPPCState *env, uint32_t val)
986 {
987 CPU_FloatU u;
988
989 u.l = val;
990 /* NaN are not treated the same way IEEE 754 does */
991 if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
992 return 0;
993 }
994
995 return float32_to_int32_round_to_zero(u.f, &env->vec_status);
996 }
997
efsctuiz(CPUPPCState * env,uint32_t val)998 static inline uint32_t efsctuiz(CPUPPCState *env, uint32_t val)
999 {
1000 CPU_FloatU u;
1001
1002 u.l = val;
1003 /* NaN are not treated the same way IEEE 754 does */
1004 if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
1005 return 0;
1006 }
1007
1008 return float32_to_uint32_round_to_zero(u.f, &env->vec_status);
1009 }
1010
efscfsf(CPUPPCState * env,uint32_t val)1011 static inline uint32_t efscfsf(CPUPPCState *env, uint32_t val)
1012 {
1013 CPU_FloatU u;
1014 float32 tmp;
1015
1016 u.f = int32_to_float32(val, &env->vec_status);
1017 tmp = int64_to_float32(1ULL << 32, &env->vec_status);
1018 u.f = float32_div(u.f, tmp, &env->vec_status);
1019
1020 return u.l;
1021 }
1022
efscfuf(CPUPPCState * env,uint32_t val)1023 static inline uint32_t efscfuf(CPUPPCState *env, uint32_t val)
1024 {
1025 CPU_FloatU u;
1026 float32 tmp;
1027
1028 u.f = uint32_to_float32(val, &env->vec_status);
1029 tmp = uint64_to_float32(1ULL << 32, &env->vec_status);
1030 u.f = float32_div(u.f, tmp, &env->vec_status);
1031
1032 return u.l;
1033 }
1034
efsctsf(CPUPPCState * env,uint32_t val)1035 static inline uint32_t efsctsf(CPUPPCState *env, uint32_t val)
1036 {
1037 CPU_FloatU u;
1038 float32 tmp;
1039
1040 u.l = val;
1041 /* NaN are not treated the same way IEEE 754 does */
1042 if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
1043 return 0;
1044 }
1045 tmp = uint64_to_float32(1ULL << 32, &env->vec_status);
1046 u.f = float32_mul(u.f, tmp, &env->vec_status);
1047
1048 return float32_to_int32(u.f, &env->vec_status);
1049 }
1050
efsctuf(CPUPPCState * env,uint32_t val)1051 static inline uint32_t efsctuf(CPUPPCState *env, uint32_t val)
1052 {
1053 CPU_FloatU u;
1054 float32 tmp;
1055
1056 u.l = val;
1057 /* NaN are not treated the same way IEEE 754 does */
1058 if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
1059 return 0;
1060 }
1061 tmp = uint64_to_float32(1ULL << 32, &env->vec_status);
1062 u.f = float32_mul(u.f, tmp, &env->vec_status);
1063
1064 return float32_to_uint32(u.f, &env->vec_status);
1065 }
1066
1067 #define HELPER_SPE_SINGLE_CONV(name) \
1068 uint32_t helper_e##name(CPUPPCState *env, uint32_t val) \
1069 { \
1070 return e##name(env, val); \
1071 }
1072 /* efscfsi */
1073 HELPER_SPE_SINGLE_CONV(fscfsi);
1074 /* efscfui */
1075 HELPER_SPE_SINGLE_CONV(fscfui);
1076 /* efscfuf */
1077 HELPER_SPE_SINGLE_CONV(fscfuf);
1078 /* efscfsf */
1079 HELPER_SPE_SINGLE_CONV(fscfsf);
1080 /* efsctsi */
1081 HELPER_SPE_SINGLE_CONV(fsctsi);
1082 /* efsctui */
1083 HELPER_SPE_SINGLE_CONV(fsctui);
1084 /* efsctsiz */
1085 HELPER_SPE_SINGLE_CONV(fsctsiz);
1086 /* efsctuiz */
1087 HELPER_SPE_SINGLE_CONV(fsctuiz);
1088 /* efsctsf */
1089 HELPER_SPE_SINGLE_CONV(fsctsf);
1090 /* efsctuf */
1091 HELPER_SPE_SINGLE_CONV(fsctuf);
1092
1093 #define HELPER_SPE_VECTOR_CONV(name) \
1094 uint64_t helper_ev##name(CPUPPCState *env, uint64_t val) \
1095 { \
1096 return ((uint64_t)e##name(env, val >> 32) << 32) | \
1097 (uint64_t)e##name(env, val); \
1098 }
1099 /* evfscfsi */
1100 HELPER_SPE_VECTOR_CONV(fscfsi);
1101 /* evfscfui */
1102 HELPER_SPE_VECTOR_CONV(fscfui);
1103 /* evfscfuf */
1104 HELPER_SPE_VECTOR_CONV(fscfuf);
1105 /* evfscfsf */
1106 HELPER_SPE_VECTOR_CONV(fscfsf);
1107 /* evfsctsi */
1108 HELPER_SPE_VECTOR_CONV(fsctsi);
1109 /* evfsctui */
1110 HELPER_SPE_VECTOR_CONV(fsctui);
1111 /* evfsctsiz */
1112 HELPER_SPE_VECTOR_CONV(fsctsiz);
1113 /* evfsctuiz */
1114 HELPER_SPE_VECTOR_CONV(fsctuiz);
1115 /* evfsctsf */
1116 HELPER_SPE_VECTOR_CONV(fsctsf);
1117 /* evfsctuf */
1118 HELPER_SPE_VECTOR_CONV(fsctuf);
1119
1120 /* Single-precision floating-point arithmetic */
efsadd(CPUPPCState * env,uint32_t op1,uint32_t op2)1121 static inline uint32_t efsadd(CPUPPCState *env, uint32_t op1, uint32_t op2)
1122 {
1123 CPU_FloatU u1, u2;
1124
1125 u1.l = op1;
1126 u2.l = op2;
1127 u1.f = float32_add(u1.f, u2.f, &env->vec_status);
1128 return u1.l;
1129 }
1130
efssub(CPUPPCState * env,uint32_t op1,uint32_t op2)1131 static inline uint32_t efssub(CPUPPCState *env, uint32_t op1, uint32_t op2)
1132 {
1133 CPU_FloatU u1, u2;
1134
1135 u1.l = op1;
1136 u2.l = op2;
1137 u1.f = float32_sub(u1.f, u2.f, &env->vec_status);
1138 return u1.l;
1139 }
1140
efsmul(CPUPPCState * env,uint32_t op1,uint32_t op2)1141 static inline uint32_t efsmul(CPUPPCState *env, uint32_t op1, uint32_t op2)
1142 {
1143 CPU_FloatU u1, u2;
1144
1145 u1.l = op1;
1146 u2.l = op2;
1147 u1.f = float32_mul(u1.f, u2.f, &env->vec_status);
1148 return u1.l;
1149 }
1150
efsdiv(CPUPPCState * env,uint32_t op1,uint32_t op2)1151 static inline uint32_t efsdiv(CPUPPCState *env, uint32_t op1, uint32_t op2)
1152 {
1153 CPU_FloatU u1, u2;
1154
1155 u1.l = op1;
1156 u2.l = op2;
1157 u1.f = float32_div(u1.f, u2.f, &env->vec_status);
1158 return u1.l;
1159 }
1160
1161 #define HELPER_SPE_SINGLE_ARITH(name) \
1162 uint32_t helper_e##name(CPUPPCState *env, uint32_t op1, uint32_t op2) \
1163 { \
1164 return e##name(env, op1, op2); \
1165 }
1166 /* efsadd */
1167 HELPER_SPE_SINGLE_ARITH(fsadd);
1168 /* efssub */
1169 HELPER_SPE_SINGLE_ARITH(fssub);
1170 /* efsmul */
1171 HELPER_SPE_SINGLE_ARITH(fsmul);
1172 /* efsdiv */
1173 HELPER_SPE_SINGLE_ARITH(fsdiv);
1174
1175 #define HELPER_SPE_VECTOR_ARITH(name) \
1176 uint64_t helper_ev##name(CPUPPCState *env, uint64_t op1, uint64_t op2) \
1177 { \
1178 return ((uint64_t)e##name(env, op1 >> 32, op2 >> 32) << 32) | \
1179 (uint64_t)e##name(env, op1, op2); \
1180 }
1181 /* evfsadd */
1182 HELPER_SPE_VECTOR_ARITH(fsadd);
1183 /* evfssub */
1184 HELPER_SPE_VECTOR_ARITH(fssub);
1185 /* evfsmul */
1186 HELPER_SPE_VECTOR_ARITH(fsmul);
1187 /* evfsdiv */
1188 HELPER_SPE_VECTOR_ARITH(fsdiv);
1189
1190 /* Single-precision floating-point comparisons */
efscmplt(CPUPPCState * env,uint32_t op1,uint32_t op2)1191 static inline uint32_t efscmplt(CPUPPCState *env, uint32_t op1, uint32_t op2)
1192 {
1193 CPU_FloatU u1, u2;
1194
1195 u1.l = op1;
1196 u2.l = op2;
1197 return float32_lt(u1.f, u2.f, &env->vec_status) ? 4 : 0;
1198 }
1199
efscmpgt(CPUPPCState * env,uint32_t op1,uint32_t op2)1200 static inline uint32_t efscmpgt(CPUPPCState *env, uint32_t op1, uint32_t op2)
1201 {
1202 CPU_FloatU u1, u2;
1203
1204 u1.l = op1;
1205 u2.l = op2;
1206 return float32_le(u1.f, u2.f, &env->vec_status) ? 0 : 4;
1207 }
1208
efscmpeq(CPUPPCState * env,uint32_t op1,uint32_t op2)1209 static inline uint32_t efscmpeq(CPUPPCState *env, uint32_t op1, uint32_t op2)
1210 {
1211 CPU_FloatU u1, u2;
1212
1213 u1.l = op1;
1214 u2.l = op2;
1215 return float32_eq(u1.f, u2.f, &env->vec_status) ? 4 : 0;
1216 }
1217
efststlt(CPUPPCState * env,uint32_t op1,uint32_t op2)1218 static inline uint32_t efststlt(CPUPPCState *env, uint32_t op1, uint32_t op2)
1219 {
1220 /* XXX: TODO: ignore special values (NaN, infinites, ...) */
1221 return efscmplt(env, op1, op2);
1222 }
1223
efststgt(CPUPPCState * env,uint32_t op1,uint32_t op2)1224 static inline uint32_t efststgt(CPUPPCState *env, uint32_t op1, uint32_t op2)
1225 {
1226 /* XXX: TODO: ignore special values (NaN, infinites, ...) */
1227 return efscmpgt(env, op1, op2);
1228 }
1229
efststeq(CPUPPCState * env,uint32_t op1,uint32_t op2)1230 static inline uint32_t efststeq(CPUPPCState *env, uint32_t op1, uint32_t op2)
1231 {
1232 /* XXX: TODO: ignore special values (NaN, infinites, ...) */
1233 return efscmpeq(env, op1, op2);
1234 }
1235
1236 #define HELPER_SINGLE_SPE_CMP(name) \
1237 uint32_t helper_e##name(CPUPPCState *env, uint32_t op1, uint32_t op2) \
1238 { \
1239 return e##name(env, op1, op2); \
1240 }
1241 /* efststlt */
1242 HELPER_SINGLE_SPE_CMP(fststlt);
1243 /* efststgt */
1244 HELPER_SINGLE_SPE_CMP(fststgt);
1245 /* efststeq */
1246 HELPER_SINGLE_SPE_CMP(fststeq);
1247 /* efscmplt */
1248 HELPER_SINGLE_SPE_CMP(fscmplt);
1249 /* efscmpgt */
1250 HELPER_SINGLE_SPE_CMP(fscmpgt);
1251 /* efscmpeq */
1252 HELPER_SINGLE_SPE_CMP(fscmpeq);
1253
evcmp_merge(int t0,int t1)1254 static inline uint32_t evcmp_merge(int t0, int t1)
1255 {
1256 return (t0 << 3) | (t1 << 2) | ((t0 | t1) << 1) | (t0 & t1);
1257 }
1258
1259 #define HELPER_VECTOR_SPE_CMP(name) \
1260 uint32_t helper_ev##name(CPUPPCState *env, uint64_t op1, uint64_t op2) \
1261 { \
1262 return evcmp_merge(e##name(env, op1 >> 32, op2 >> 32), \
1263 e##name(env, op1, op2)); \
1264 }
1265 /* evfststlt */
1266 HELPER_VECTOR_SPE_CMP(fststlt);
1267 /* evfststgt */
1268 HELPER_VECTOR_SPE_CMP(fststgt);
1269 /* evfststeq */
1270 HELPER_VECTOR_SPE_CMP(fststeq);
1271 /* evfscmplt */
1272 HELPER_VECTOR_SPE_CMP(fscmplt);
1273 /* evfscmpgt */
1274 HELPER_VECTOR_SPE_CMP(fscmpgt);
1275 /* evfscmpeq */
1276 HELPER_VECTOR_SPE_CMP(fscmpeq);
1277
1278 /* Double-precision floating-point conversion */
helper_efdcfsi(CPUPPCState * env,uint32_t val)1279 uint64_t helper_efdcfsi(CPUPPCState *env, uint32_t val)
1280 {
1281 CPU_DoubleU u;
1282
1283 u.d = int32_to_float64(val, &env->vec_status);
1284
1285 return u.ll;
1286 }
1287
helper_efdcfsid(CPUPPCState * env,uint64_t val)1288 uint64_t helper_efdcfsid(CPUPPCState *env, uint64_t val)
1289 {
1290 CPU_DoubleU u;
1291
1292 u.d = int64_to_float64(val, &env->vec_status);
1293
1294 return u.ll;
1295 }
1296
helper_efdcfui(CPUPPCState * env,uint32_t val)1297 uint64_t helper_efdcfui(CPUPPCState *env, uint32_t val)
1298 {
1299 CPU_DoubleU u;
1300
1301 u.d = uint32_to_float64(val, &env->vec_status);
1302
1303 return u.ll;
1304 }
1305
helper_efdcfuid(CPUPPCState * env,uint64_t val)1306 uint64_t helper_efdcfuid(CPUPPCState *env, uint64_t val)
1307 {
1308 CPU_DoubleU u;
1309
1310 u.d = uint64_to_float64(val, &env->vec_status);
1311
1312 return u.ll;
1313 }
1314
helper_efdctsi(CPUPPCState * env,uint64_t val)1315 uint32_t helper_efdctsi(CPUPPCState *env, uint64_t val)
1316 {
1317 CPU_DoubleU u;
1318
1319 u.ll = val;
1320 /* NaN are not treated the same way IEEE 754 does */
1321 if (unlikely(float64_is_any_nan(u.d))) {
1322 return 0;
1323 }
1324
1325 return float64_to_int32(u.d, &env->vec_status);
1326 }
1327
helper_efdctui(CPUPPCState * env,uint64_t val)1328 uint32_t helper_efdctui(CPUPPCState *env, uint64_t val)
1329 {
1330 CPU_DoubleU u;
1331
1332 u.ll = val;
1333 /* NaN are not treated the same way IEEE 754 does */
1334 if (unlikely(float64_is_any_nan(u.d))) {
1335 return 0;
1336 }
1337
1338 return float64_to_uint32(u.d, &env->vec_status);
1339 }
1340
helper_efdctsiz(CPUPPCState * env,uint64_t val)1341 uint32_t helper_efdctsiz(CPUPPCState *env, uint64_t val)
1342 {
1343 CPU_DoubleU u;
1344
1345 u.ll = val;
1346 /* NaN are not treated the same way IEEE 754 does */
1347 if (unlikely(float64_is_any_nan(u.d))) {
1348 return 0;
1349 }
1350
1351 return float64_to_int32_round_to_zero(u.d, &env->vec_status);
1352 }
1353
helper_efdctsidz(CPUPPCState * env,uint64_t val)1354 uint64_t helper_efdctsidz(CPUPPCState *env, uint64_t val)
1355 {
1356 CPU_DoubleU u;
1357
1358 u.ll = val;
1359 /* NaN are not treated the same way IEEE 754 does */
1360 if (unlikely(float64_is_any_nan(u.d))) {
1361 return 0;
1362 }
1363
1364 return float64_to_int64_round_to_zero(u.d, &env->vec_status);
1365 }
1366
helper_efdctuiz(CPUPPCState * env,uint64_t val)1367 uint32_t helper_efdctuiz(CPUPPCState *env, uint64_t val)
1368 {
1369 CPU_DoubleU u;
1370
1371 u.ll = val;
1372 /* NaN are not treated the same way IEEE 754 does */
1373 if (unlikely(float64_is_any_nan(u.d))) {
1374 return 0;
1375 }
1376
1377 return float64_to_uint32_round_to_zero(u.d, &env->vec_status);
1378 }
1379
helper_efdctuidz(CPUPPCState * env,uint64_t val)1380 uint64_t helper_efdctuidz(CPUPPCState *env, uint64_t val)
1381 {
1382 CPU_DoubleU u;
1383
1384 u.ll = val;
1385 /* NaN are not treated the same way IEEE 754 does */
1386 if (unlikely(float64_is_any_nan(u.d))) {
1387 return 0;
1388 }
1389
1390 return float64_to_uint64_round_to_zero(u.d, &env->vec_status);
1391 }
1392
helper_efdcfsf(CPUPPCState * env,uint32_t val)1393 uint64_t helper_efdcfsf(CPUPPCState *env, uint32_t val)
1394 {
1395 CPU_DoubleU u;
1396 float64 tmp;
1397
1398 u.d = int32_to_float64(val, &env->vec_status);
1399 tmp = int64_to_float64(1ULL << 32, &env->vec_status);
1400 u.d = float64_div(u.d, tmp, &env->vec_status);
1401
1402 return u.ll;
1403 }
1404
helper_efdcfuf(CPUPPCState * env,uint32_t val)1405 uint64_t helper_efdcfuf(CPUPPCState *env, uint32_t val)
1406 {
1407 CPU_DoubleU u;
1408 float64 tmp;
1409
1410 u.d = uint32_to_float64(val, &env->vec_status);
1411 tmp = int64_to_float64(1ULL << 32, &env->vec_status);
1412 u.d = float64_div(u.d, tmp, &env->vec_status);
1413
1414 return u.ll;
1415 }
1416
helper_efdctsf(CPUPPCState * env,uint64_t val)1417 uint32_t helper_efdctsf(CPUPPCState *env, uint64_t val)
1418 {
1419 CPU_DoubleU u;
1420 float64 tmp;
1421
1422 u.ll = val;
1423 /* NaN are not treated the same way IEEE 754 does */
1424 if (unlikely(float64_is_any_nan(u.d))) {
1425 return 0;
1426 }
1427 tmp = uint64_to_float64(1ULL << 32, &env->vec_status);
1428 u.d = float64_mul(u.d, tmp, &env->vec_status);
1429
1430 return float64_to_int32(u.d, &env->vec_status);
1431 }
1432
helper_efdctuf(CPUPPCState * env,uint64_t val)1433 uint32_t helper_efdctuf(CPUPPCState *env, uint64_t val)
1434 {
1435 CPU_DoubleU u;
1436 float64 tmp;
1437
1438 u.ll = val;
1439 /* NaN are not treated the same way IEEE 754 does */
1440 if (unlikely(float64_is_any_nan(u.d))) {
1441 return 0;
1442 }
1443 tmp = uint64_to_float64(1ULL << 32, &env->vec_status);
1444 u.d = float64_mul(u.d, tmp, &env->vec_status);
1445
1446 return float64_to_uint32(u.d, &env->vec_status);
1447 }
1448
helper_efscfd(CPUPPCState * env,uint64_t val)1449 uint32_t helper_efscfd(CPUPPCState *env, uint64_t val)
1450 {
1451 CPU_DoubleU u1;
1452 CPU_FloatU u2;
1453
1454 u1.ll = val;
1455 u2.f = float64_to_float32(u1.d, &env->vec_status);
1456
1457 return u2.l;
1458 }
1459
helper_efdcfs(CPUPPCState * env,uint32_t val)1460 uint64_t helper_efdcfs(CPUPPCState *env, uint32_t val)
1461 {
1462 CPU_DoubleU u2;
1463 CPU_FloatU u1;
1464
1465 u1.l = val;
1466 u2.d = float32_to_float64(u1.f, &env->vec_status);
1467
1468 return u2.ll;
1469 }
1470
1471 /* Double precision fixed-point arithmetic */
helper_efdadd(CPUPPCState * env,uint64_t op1,uint64_t op2)1472 uint64_t helper_efdadd(CPUPPCState *env, uint64_t op1, uint64_t op2)
1473 {
1474 CPU_DoubleU u1, u2;
1475
1476 u1.ll = op1;
1477 u2.ll = op2;
1478 u1.d = float64_add(u1.d, u2.d, &env->vec_status);
1479 return u1.ll;
1480 }
1481
helper_efdsub(CPUPPCState * env,uint64_t op1,uint64_t op2)1482 uint64_t helper_efdsub(CPUPPCState *env, uint64_t op1, uint64_t op2)
1483 {
1484 CPU_DoubleU u1, u2;
1485
1486 u1.ll = op1;
1487 u2.ll = op2;
1488 u1.d = float64_sub(u1.d, u2.d, &env->vec_status);
1489 return u1.ll;
1490 }
1491
helper_efdmul(CPUPPCState * env,uint64_t op1,uint64_t op2)1492 uint64_t helper_efdmul(CPUPPCState *env, uint64_t op1, uint64_t op2)
1493 {
1494 CPU_DoubleU u1, u2;
1495
1496 u1.ll = op1;
1497 u2.ll = op2;
1498 u1.d = float64_mul(u1.d, u2.d, &env->vec_status);
1499 return u1.ll;
1500 }
1501
helper_efddiv(CPUPPCState * env,uint64_t op1,uint64_t op2)1502 uint64_t helper_efddiv(CPUPPCState *env, uint64_t op1, uint64_t op2)
1503 {
1504 CPU_DoubleU u1, u2;
1505
1506 u1.ll = op1;
1507 u2.ll = op2;
1508 u1.d = float64_div(u1.d, u2.d, &env->vec_status);
1509 return u1.ll;
1510 }
1511
1512 /* Double precision floating point helpers */
helper_efdtstlt(CPUPPCState * env,uint64_t op1,uint64_t op2)1513 uint32_t helper_efdtstlt(CPUPPCState *env, uint64_t op1, uint64_t op2)
1514 {
1515 CPU_DoubleU u1, u2;
1516
1517 u1.ll = op1;
1518 u2.ll = op2;
1519 return float64_lt(u1.d, u2.d, &env->vec_status) ? 4 : 0;
1520 }
1521
helper_efdtstgt(CPUPPCState * env,uint64_t op1,uint64_t op2)1522 uint32_t helper_efdtstgt(CPUPPCState *env, uint64_t op1, uint64_t op2)
1523 {
1524 CPU_DoubleU u1, u2;
1525
1526 u1.ll = op1;
1527 u2.ll = op2;
1528 return float64_le(u1.d, u2.d, &env->vec_status) ? 0 : 4;
1529 }
1530
helper_efdtsteq(CPUPPCState * env,uint64_t op1,uint64_t op2)1531 uint32_t helper_efdtsteq(CPUPPCState *env, uint64_t op1, uint64_t op2)
1532 {
1533 CPU_DoubleU u1, u2;
1534
1535 u1.ll = op1;
1536 u2.ll = op2;
1537 return float64_eq_quiet(u1.d, u2.d, &env->vec_status) ? 4 : 0;
1538 }
1539
helper_efdcmplt(CPUPPCState * env,uint64_t op1,uint64_t op2)1540 uint32_t helper_efdcmplt(CPUPPCState *env, uint64_t op1, uint64_t op2)
1541 {
1542 /* XXX: TODO: test special values (NaN, infinites, ...) */
1543 return helper_efdtstlt(env, op1, op2);
1544 }
1545
helper_efdcmpgt(CPUPPCState * env,uint64_t op1,uint64_t op2)1546 uint32_t helper_efdcmpgt(CPUPPCState *env, uint64_t op1, uint64_t op2)
1547 {
1548 /* XXX: TODO: test special values (NaN, infinites, ...) */
1549 return helper_efdtstgt(env, op1, op2);
1550 }
1551
helper_efdcmpeq(CPUPPCState * env,uint64_t op1,uint64_t op2)1552 uint32_t helper_efdcmpeq(CPUPPCState *env, uint64_t op1, uint64_t op2)
1553 {
1554 /* XXX: TODO: test special values (NaN, infinites, ...) */
1555 return helper_efdtsteq(env, op1, op2);
1556 }
1557
1558 #define float64_to_float64(x, env) x
1559
1560
1561 /*
1562 * VSX_ADD_SUB - VSX floating point add/subtract
1563 * name - instruction mnemonic
1564 * op - operation (add or sub)
1565 * nels - number of elements (1, 2 or 4)
1566 * tp - type (float32 or float64)
1567 * fld - vsr_t field (VsrD(*) or VsrW(*))
1568 * sfifprf - set FI and FPRF
1569 */
1570 #define VSX_ADD_SUB(name, op, nels, tp, fld, sfifprf, r2sp) \
1571 void helper_##name(CPUPPCState *env, ppc_vsr_t *xt, \
1572 ppc_vsr_t *xa, ppc_vsr_t *xb) \
1573 { \
1574 ppc_vsr_t t = { }; \
1575 int i; \
1576 \
1577 helper_reset_fpstatus(env); \
1578 \
1579 for (i = 0; i < nels; i++) { \
1580 float_status tstat = env->fp_status; \
1581 set_float_exception_flags(0, &tstat); \
1582 t.fld = tp##_##op(xa->fld, xb->fld, &tstat); \
1583 env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
1584 \
1585 if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
1586 float_invalid_op_addsub(env, tstat.float_exception_flags, \
1587 sfifprf, GETPC()); \
1588 } \
1589 \
1590 if (r2sp) { \
1591 t.fld = do_frsp(env, t.fld, GETPC()); \
1592 } \
1593 \
1594 if (sfifprf) { \
1595 helper_compute_fprf_float64(env, t.fld); \
1596 } \
1597 } \
1598 *xt = t; \
1599 do_float_check_status(env, sfifprf, GETPC()); \
1600 }
1601
1602 VSX_ADD_SUB(XSADDDP, add, 1, float64, VsrD(0), 1, 0)
1603 VSX_ADD_SUB(XSADDSP, add, 1, float64, VsrD(0), 1, 1)
1604 VSX_ADD_SUB(XVADDDP, add, 2, float64, VsrD(i), 0, 0)
1605 VSX_ADD_SUB(XVADDSP, add, 4, float32, VsrW(i), 0, 0)
1606 VSX_ADD_SUB(XSSUBDP, sub, 1, float64, VsrD(0), 1, 0)
1607 VSX_ADD_SUB(XSSUBSP, sub, 1, float64, VsrD(0), 1, 1)
1608 VSX_ADD_SUB(XVSUBDP, sub, 2, float64, VsrD(i), 0, 0)
1609 VSX_ADD_SUB(XVSUBSP, sub, 4, float32, VsrW(i), 0, 0)
1610
helper_xsaddqp(CPUPPCState * env,uint32_t opcode,ppc_vsr_t * xt,ppc_vsr_t * xa,ppc_vsr_t * xb)1611 void helper_xsaddqp(CPUPPCState *env, uint32_t opcode,
1612 ppc_vsr_t *xt, ppc_vsr_t *xa, ppc_vsr_t *xb)
1613 {
1614 ppc_vsr_t t = *xt;
1615 float_status tstat;
1616
1617 helper_reset_fpstatus(env);
1618
1619 tstat = env->fp_status;
1620 if (unlikely(Rc(opcode) != 0)) {
1621 tstat.float_rounding_mode = float_round_to_odd;
1622 }
1623
1624 set_float_exception_flags(0, &tstat);
1625 t.f128 = float128_add(xa->f128, xb->f128, &tstat);
1626 env->fp_status.float_exception_flags |= tstat.float_exception_flags;
1627
1628 if (unlikely(tstat.float_exception_flags & float_flag_invalid)) {
1629 float_invalid_op_addsub(env, tstat.float_exception_flags, 1, GETPC());
1630 }
1631
1632 helper_compute_fprf_float128(env, t.f128);
1633
1634 *xt = t;
1635 do_float_check_status(env, true, GETPC());
1636 }
1637
1638 /*
1639 * VSX_MUL - VSX floating point multiply
1640 * op - instruction mnemonic
1641 * nels - number of elements (1, 2 or 4)
1642 * tp - type (float32 or float64)
1643 * fld - vsr_t field (VsrD(*) or VsrW(*))
1644 * sfifprf - set FI and FPRF
1645 */
1646 #define VSX_MUL(op, nels, tp, fld, sfifprf, r2sp) \
1647 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, \
1648 ppc_vsr_t *xa, ppc_vsr_t *xb) \
1649 { \
1650 ppc_vsr_t t = { }; \
1651 int i; \
1652 \
1653 helper_reset_fpstatus(env); \
1654 \
1655 for (i = 0; i < nels; i++) { \
1656 float_status tstat = env->fp_status; \
1657 set_float_exception_flags(0, &tstat); \
1658 t.fld = tp##_mul(xa->fld, xb->fld, &tstat); \
1659 env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
1660 \
1661 if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
1662 float_invalid_op_mul(env, tstat.float_exception_flags, \
1663 sfifprf, GETPC()); \
1664 } \
1665 \
1666 if (r2sp) { \
1667 t.fld = do_frsp(env, t.fld, GETPC()); \
1668 } \
1669 \
1670 if (sfifprf) { \
1671 helper_compute_fprf_float64(env, t.fld); \
1672 } \
1673 } \
1674 \
1675 *xt = t; \
1676 do_float_check_status(env, sfifprf, GETPC()); \
1677 }
1678
1679 VSX_MUL(XSMULDP, 1, float64, VsrD(0), 1, 0)
1680 VSX_MUL(XSMULSP, 1, float64, VsrD(0), 1, 1)
1681 VSX_MUL(XVMULDP, 2, float64, VsrD(i), 0, 0)
1682 VSX_MUL(XVMULSP, 4, float32, VsrW(i), 0, 0)
1683
helper_xsmulqp(CPUPPCState * env,uint32_t opcode,ppc_vsr_t * xt,ppc_vsr_t * xa,ppc_vsr_t * xb)1684 void helper_xsmulqp(CPUPPCState *env, uint32_t opcode,
1685 ppc_vsr_t *xt, ppc_vsr_t *xa, ppc_vsr_t *xb)
1686 {
1687 ppc_vsr_t t = *xt;
1688 float_status tstat;
1689
1690 helper_reset_fpstatus(env);
1691 tstat = env->fp_status;
1692 if (unlikely(Rc(opcode) != 0)) {
1693 tstat.float_rounding_mode = float_round_to_odd;
1694 }
1695
1696 set_float_exception_flags(0, &tstat);
1697 t.f128 = float128_mul(xa->f128, xb->f128, &tstat);
1698 env->fp_status.float_exception_flags |= tstat.float_exception_flags;
1699
1700 if (unlikely(tstat.float_exception_flags & float_flag_invalid)) {
1701 float_invalid_op_mul(env, tstat.float_exception_flags, 1, GETPC());
1702 }
1703 helper_compute_fprf_float128(env, t.f128);
1704
1705 *xt = t;
1706 do_float_check_status(env, true, GETPC());
1707 }
1708
1709 /*
1710 * VSX_DIV - VSX floating point divide
1711 * op - instruction mnemonic
1712 * nels - number of elements (1, 2 or 4)
1713 * tp - type (float32 or float64)
1714 * fld - vsr_t field (VsrD(*) or VsrW(*))
1715 * sfifprf - set FI and FPRF
1716 */
1717 #define VSX_DIV(op, nels, tp, fld, sfifprf, r2sp) \
1718 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, \
1719 ppc_vsr_t *xa, ppc_vsr_t *xb) \
1720 { \
1721 ppc_vsr_t t = { }; \
1722 int i; \
1723 \
1724 helper_reset_fpstatus(env); \
1725 \
1726 for (i = 0; i < nels; i++) { \
1727 float_status tstat = env->fp_status; \
1728 set_float_exception_flags(0, &tstat); \
1729 t.fld = tp##_div(xa->fld, xb->fld, &tstat); \
1730 env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
1731 \
1732 if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
1733 float_invalid_op_div(env, tstat.float_exception_flags, \
1734 sfifprf, GETPC()); \
1735 } \
1736 if (unlikely(tstat.float_exception_flags & float_flag_divbyzero)) { \
1737 float_zero_divide_excp(env, GETPC()); \
1738 } \
1739 \
1740 if (r2sp) { \
1741 t.fld = do_frsp(env, t.fld, GETPC()); \
1742 } \
1743 \
1744 if (sfifprf) { \
1745 helper_compute_fprf_float64(env, t.fld); \
1746 } \
1747 } \
1748 \
1749 *xt = t; \
1750 do_float_check_status(env, sfifprf, GETPC()); \
1751 }
1752
1753 VSX_DIV(XSDIVDP, 1, float64, VsrD(0), 1, 0)
1754 VSX_DIV(XSDIVSP, 1, float64, VsrD(0), 1, 1)
1755 VSX_DIV(XVDIVDP, 2, float64, VsrD(i), 0, 0)
1756 VSX_DIV(XVDIVSP, 4, float32, VsrW(i), 0, 0)
1757
helper_xsdivqp(CPUPPCState * env,uint32_t opcode,ppc_vsr_t * xt,ppc_vsr_t * xa,ppc_vsr_t * xb)1758 void helper_xsdivqp(CPUPPCState *env, uint32_t opcode,
1759 ppc_vsr_t *xt, ppc_vsr_t *xa, ppc_vsr_t *xb)
1760 {
1761 ppc_vsr_t t = *xt;
1762 float_status tstat;
1763
1764 helper_reset_fpstatus(env);
1765 tstat = env->fp_status;
1766 if (unlikely(Rc(opcode) != 0)) {
1767 tstat.float_rounding_mode = float_round_to_odd;
1768 }
1769
1770 set_float_exception_flags(0, &tstat);
1771 t.f128 = float128_div(xa->f128, xb->f128, &tstat);
1772 env->fp_status.float_exception_flags |= tstat.float_exception_flags;
1773
1774 if (unlikely(tstat.float_exception_flags & float_flag_invalid)) {
1775 float_invalid_op_div(env, tstat.float_exception_flags, 1, GETPC());
1776 }
1777 if (unlikely(tstat.float_exception_flags & float_flag_divbyzero)) {
1778 float_zero_divide_excp(env, GETPC());
1779 }
1780
1781 helper_compute_fprf_float128(env, t.f128);
1782 *xt = t;
1783 do_float_check_status(env, true, GETPC());
1784 }
1785
1786 /*
1787 * VSX_RE - VSX floating point reciprocal estimate
1788 * op - instruction mnemonic
1789 * nels - number of elements (1, 2 or 4)
1790 * tp - type (float32 or float64)
1791 * fld - vsr_t field (VsrD(*) or VsrW(*))
1792 * sfifprf - set FI and FPRF
1793 */
1794 #define VSX_RE(op, nels, tp, fld, sfifprf, r2sp) \
1795 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
1796 { \
1797 ppc_vsr_t t = { }; \
1798 int i; \
1799 \
1800 helper_reset_fpstatus(env); \
1801 \
1802 for (i = 0; i < nels; i++) { \
1803 if (unlikely(tp##_is_signaling_nan(xb->fld, &env->fp_status))) { \
1804 float_invalid_op_vxsnan(env, GETPC()); \
1805 } \
1806 t.fld = tp##_div(tp##_one, xb->fld, &env->fp_status); \
1807 \
1808 if (r2sp) { \
1809 t.fld = do_frsp(env, t.fld, GETPC()); \
1810 } \
1811 \
1812 if (sfifprf) { \
1813 helper_compute_fprf_float64(env, t.fld); \
1814 } \
1815 } \
1816 \
1817 *xt = t; \
1818 do_float_check_status(env, sfifprf, GETPC()); \
1819 }
1820
1821 VSX_RE(xsredp, 1, float64, VsrD(0), 1, 0)
1822 VSX_RE(xsresp, 1, float64, VsrD(0), 1, 1)
1823 VSX_RE(xvredp, 2, float64, VsrD(i), 0, 0)
1824 VSX_RE(xvresp, 4, float32, VsrW(i), 0, 0)
1825
1826 /*
1827 * VSX_SQRT - VSX floating point square root
1828 * op - instruction mnemonic
1829 * nels - number of elements (1, 2 or 4)
1830 * tp - type (float32 or float64)
1831 * fld - vsr_t field (VsrD(*) or VsrW(*))
1832 * sfifprf - set FI and FPRF
1833 */
1834 #define VSX_SQRT(op, nels, tp, fld, sfifprf, r2sp) \
1835 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
1836 { \
1837 ppc_vsr_t t = { }; \
1838 int i; \
1839 \
1840 helper_reset_fpstatus(env); \
1841 \
1842 for (i = 0; i < nels; i++) { \
1843 float_status tstat = env->fp_status; \
1844 set_float_exception_flags(0, &tstat); \
1845 t.fld = tp##_sqrt(xb->fld, &tstat); \
1846 env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
1847 \
1848 if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
1849 float_invalid_op_sqrt(env, tstat.float_exception_flags, \
1850 sfifprf, GETPC()); \
1851 } \
1852 \
1853 if (r2sp) { \
1854 t.fld = do_frsp(env, t.fld, GETPC()); \
1855 } \
1856 \
1857 if (sfifprf) { \
1858 helper_compute_fprf_float64(env, t.fld); \
1859 } \
1860 } \
1861 \
1862 *xt = t; \
1863 do_float_check_status(env, sfifprf, GETPC()); \
1864 }
1865
1866 VSX_SQRT(xssqrtdp, 1, float64, VsrD(0), 1, 0)
1867 VSX_SQRT(xssqrtsp, 1, float64, VsrD(0), 1, 1)
1868 VSX_SQRT(xvsqrtdp, 2, float64, VsrD(i), 0, 0)
1869 VSX_SQRT(xvsqrtsp, 4, float32, VsrW(i), 0, 0)
1870
1871 /*
1872 *VSX_RSQRTE - VSX floating point reciprocal square root estimate
1873 * op - instruction mnemonic
1874 * nels - number of elements (1, 2 or 4)
1875 * tp - type (float32 or float64)
1876 * fld - vsr_t field (VsrD(*) or VsrW(*))
1877 * sfifprf - set FI and FPRF
1878 */
1879 #define VSX_RSQRTE(op, nels, tp, fld, sfifprf, r2sp) \
1880 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
1881 { \
1882 ppc_vsr_t t = { }; \
1883 int i; \
1884 \
1885 helper_reset_fpstatus(env); \
1886 \
1887 for (i = 0; i < nels; i++) { \
1888 float_status tstat = env->fp_status; \
1889 set_float_exception_flags(0, &tstat); \
1890 t.fld = tp##_sqrt(xb->fld, &tstat); \
1891 t.fld = tp##_div(tp##_one, t.fld, &tstat); \
1892 env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
1893 if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
1894 float_invalid_op_sqrt(env, tstat.float_exception_flags, \
1895 sfifprf, GETPC()); \
1896 } \
1897 if (r2sp) { \
1898 t.fld = do_frsp(env, t.fld, GETPC()); \
1899 } \
1900 \
1901 if (sfifprf) { \
1902 helper_compute_fprf_float64(env, t.fld); \
1903 } \
1904 } \
1905 \
1906 *xt = t; \
1907 do_float_check_status(env, sfifprf, GETPC()); \
1908 }
1909
1910 VSX_RSQRTE(xsrsqrtedp, 1, float64, VsrD(0), 1, 0)
1911 VSX_RSQRTE(xsrsqrtesp, 1, float64, VsrD(0), 1, 1)
1912 VSX_RSQRTE(xvrsqrtedp, 2, float64, VsrD(i), 0, 0)
1913 VSX_RSQRTE(xvrsqrtesp, 4, float32, VsrW(i), 0, 0)
1914
1915 /*
1916 * VSX_TDIV - VSX floating point test for divide
1917 * op - instruction mnemonic
1918 * nels - number of elements (1, 2 or 4)
1919 * tp - type (float32 or float64)
1920 * fld - vsr_t field (VsrD(*) or VsrW(*))
1921 * emin - minimum unbiased exponent
1922 * emax - maximum unbiased exponent
1923 * nbits - number of fraction bits
1924 */
1925 #define VSX_TDIV(op, nels, tp, fld, emin, emax, nbits) \
1926 void helper_##op(CPUPPCState *env, uint32_t opcode, \
1927 ppc_vsr_t *xa, ppc_vsr_t *xb) \
1928 { \
1929 int i; \
1930 int fe_flag = 0; \
1931 int fg_flag = 0; \
1932 \
1933 for (i = 0; i < nels; i++) { \
1934 if (unlikely(tp##_is_infinity(xa->fld) || \
1935 tp##_is_infinity(xb->fld) || \
1936 tp##_is_zero(xb->fld))) { \
1937 fe_flag = 1; \
1938 fg_flag = 1; \
1939 } else { \
1940 int e_a = ppc_##tp##_get_unbiased_exp(xa->fld); \
1941 int e_b = ppc_##tp##_get_unbiased_exp(xb->fld); \
1942 \
1943 if (unlikely(tp##_is_any_nan(xa->fld) || \
1944 tp##_is_any_nan(xb->fld))) { \
1945 fe_flag = 1; \
1946 } else if ((e_b <= emin) || (e_b >= (emax - 2))) { \
1947 fe_flag = 1; \
1948 } else if (!tp##_is_zero(xa->fld) && \
1949 (((e_a - e_b) >= emax) || \
1950 ((e_a - e_b) <= (emin + 1)) || \
1951 (e_a <= (emin + nbits)))) { \
1952 fe_flag = 1; \
1953 } \
1954 \
1955 if (unlikely(tp##_is_zero_or_denormal(xb->fld))) { \
1956 /* \
1957 * XB is not zero because of the above check and so \
1958 * must be denormalized. \
1959 */ \
1960 fg_flag = 1; \
1961 } \
1962 } \
1963 } \
1964 \
1965 env->crf[BF(opcode)] = 0x8 | (fg_flag ? 4 : 0) | (fe_flag ? 2 : 0); \
1966 }
1967
1968 VSX_TDIV(xstdivdp, 1, float64, VsrD(0), -1022, 1023, 52)
1969 VSX_TDIV(xvtdivdp, 2, float64, VsrD(i), -1022, 1023, 52)
1970 VSX_TDIV(xvtdivsp, 4, float32, VsrW(i), -126, 127, 23)
1971
1972 /*
1973 * VSX_TSQRT - VSX floating point test for square root
1974 * op - instruction mnemonic
1975 * nels - number of elements (1, 2 or 4)
1976 * tp - type (float32 or float64)
1977 * fld - vsr_t field (VsrD(*) or VsrW(*))
1978 * emin - minimum unbiased exponent
1979 * emax - maximum unbiased exponent
1980 * nbits - number of fraction bits
1981 */
1982 #define VSX_TSQRT(op, nels, tp, fld, emin, nbits) \
1983 void helper_##op(CPUPPCState *env, uint32_t opcode, ppc_vsr_t *xb) \
1984 { \
1985 int i; \
1986 int fe_flag = 0; \
1987 int fg_flag = 0; \
1988 \
1989 for (i = 0; i < nels; i++) { \
1990 if (unlikely(tp##_is_infinity(xb->fld) || \
1991 tp##_is_zero(xb->fld))) { \
1992 fe_flag = 1; \
1993 fg_flag = 1; \
1994 } else { \
1995 int e_b = ppc_##tp##_get_unbiased_exp(xb->fld); \
1996 \
1997 if (unlikely(tp##_is_any_nan(xb->fld))) { \
1998 fe_flag = 1; \
1999 } else if (unlikely(tp##_is_zero(xb->fld))) { \
2000 fe_flag = 1; \
2001 } else if (unlikely(tp##_is_neg(xb->fld))) { \
2002 fe_flag = 1; \
2003 } else if (!tp##_is_zero(xb->fld) && \
2004 (e_b <= (emin + nbits))) { \
2005 fe_flag = 1; \
2006 } \
2007 \
2008 if (unlikely(tp##_is_zero_or_denormal(xb->fld))) { \
2009 /* \
2010 * XB is not zero because of the above check and \
2011 * therefore must be denormalized. \
2012 */ \
2013 fg_flag = 1; \
2014 } \
2015 } \
2016 } \
2017 \
2018 env->crf[BF(opcode)] = 0x8 | (fg_flag ? 4 : 0) | (fe_flag ? 2 : 0); \
2019 }
2020
2021 VSX_TSQRT(xstsqrtdp, 1, float64, VsrD(0), -1022, 52)
2022 VSX_TSQRT(xvtsqrtdp, 2, float64, VsrD(i), -1022, 52)
2023 VSX_TSQRT(xvtsqrtsp, 4, float32, VsrW(i), -126, 23)
2024
2025 /*
2026 * VSX_MADD - VSX floating point muliply/add variations
2027 * op - instruction mnemonic
2028 * nels - number of elements (1, 2 or 4)
2029 * tp - type (float32 or float64)
2030 * fld - vsr_t field (VsrD(*) or VsrW(*))
2031 * maddflgs - flags for the float*muladd routine that control the
2032 * various forms (madd, msub, nmadd, nmsub)
2033 * sfifprf - set FI and FPRF
2034 */
2035 #define VSX_MADD(op, nels, tp, fld, maddflgs, sfifprf) \
2036 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, \
2037 ppc_vsr_t *s1, ppc_vsr_t *s2, ppc_vsr_t *s3) \
2038 { \
2039 ppc_vsr_t t = { }; \
2040 int i; \
2041 \
2042 helper_reset_fpstatus(env); \
2043 \
2044 for (i = 0; i < nels; i++) { \
2045 float_status tstat = env->fp_status; \
2046 set_float_exception_flags(0, &tstat); \
2047 t.fld = tp##_muladd(s1->fld, s3->fld, s2->fld, maddflgs, &tstat); \
2048 env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
2049 \
2050 if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
2051 float_invalid_op_madd(env, tstat.float_exception_flags, \
2052 sfifprf, GETPC()); \
2053 } \
2054 \
2055 if (sfifprf) { \
2056 helper_compute_fprf_float64(env, t.fld); \
2057 } \
2058 } \
2059 *xt = t; \
2060 do_float_check_status(env, sfifprf, GETPC()); \
2061 }
2062
2063 VSX_MADD(XSMADDDP, 1, float64, VsrD(0), MADD_FLGS, 1)
2064 VSX_MADD(XSMSUBDP, 1, float64, VsrD(0), MSUB_FLGS, 1)
2065 VSX_MADD(XSNMADDDP, 1, float64, VsrD(0), NMADD_FLGS, 1)
2066 VSX_MADD(XSNMSUBDP, 1, float64, VsrD(0), NMSUB_FLGS, 1)
2067 VSX_MADD(XSMADDSP, 1, float64r32, VsrD(0), MADD_FLGS, 1)
2068 VSX_MADD(XSMSUBSP, 1, float64r32, VsrD(0), MSUB_FLGS, 1)
2069 VSX_MADD(XSNMADDSP, 1, float64r32, VsrD(0), NMADD_FLGS, 1)
2070 VSX_MADD(XSNMSUBSP, 1, float64r32, VsrD(0), NMSUB_FLGS, 1)
2071
2072 VSX_MADD(xvmadddp, 2, float64, VsrD(i), MADD_FLGS, 0)
2073 VSX_MADD(xvmsubdp, 2, float64, VsrD(i), MSUB_FLGS, 0)
2074 VSX_MADD(xvnmadddp, 2, float64, VsrD(i), NMADD_FLGS, 0)
2075 VSX_MADD(xvnmsubdp, 2, float64, VsrD(i), NMSUB_FLGS, 0)
2076
2077 VSX_MADD(xvmaddsp, 4, float32, VsrW(i), MADD_FLGS, 0)
2078 VSX_MADD(xvmsubsp, 4, float32, VsrW(i), MSUB_FLGS, 0)
2079 VSX_MADD(xvnmaddsp, 4, float32, VsrW(i), NMADD_FLGS, 0)
2080 VSX_MADD(xvnmsubsp, 4, float32, VsrW(i), NMSUB_FLGS, 0)
2081
2082 /*
2083 * VSX_MADDQ - VSX floating point quad-precision muliply/add
2084 * op - instruction mnemonic
2085 * maddflgs - flags for the float*muladd routine that control the
2086 * various forms (madd, msub, nmadd, nmsub)
2087 * ro - round to odd
2088 */
2089 #define VSX_MADDQ(op, maddflgs, ro) \
2090 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *s1, ppc_vsr_t *s2,\
2091 ppc_vsr_t *s3) \
2092 { \
2093 ppc_vsr_t t = *xt; \
2094 \
2095 helper_reset_fpstatus(env); \
2096 \
2097 float_status tstat = env->fp_status; \
2098 set_float_exception_flags(0, &tstat); \
2099 if (ro) { \
2100 tstat.float_rounding_mode = float_round_to_odd; \
2101 } \
2102 t.f128 = float128_muladd(s1->f128, s3->f128, s2->f128, maddflgs, &tstat); \
2103 env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
2104 \
2105 if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
2106 float_invalid_op_madd(env, tstat.float_exception_flags, \
2107 false, GETPC()); \
2108 } \
2109 \
2110 helper_compute_fprf_float128(env, t.f128); \
2111 *xt = t; \
2112 do_float_check_status(env, true, GETPC()); \
2113 }
2114
2115 VSX_MADDQ(XSMADDQP, MADD_FLGS, 0)
2116 VSX_MADDQ(XSMADDQPO, MADD_FLGS, 1)
2117 VSX_MADDQ(XSMSUBQP, MSUB_FLGS, 0)
2118 VSX_MADDQ(XSMSUBQPO, MSUB_FLGS, 1)
2119 VSX_MADDQ(XSNMADDQP, NMADD_FLGS, 0)
2120 VSX_MADDQ(XSNMADDQPO, NMADD_FLGS, 1)
2121 VSX_MADDQ(XSNMSUBQP, NMSUB_FLGS, 0)
2122 VSX_MADDQ(XSNMSUBQPO, NMSUB_FLGS, 0)
2123
2124 /*
2125 * VSX_SCALAR_CMP - VSX scalar floating point compare
2126 * op - instruction mnemonic
2127 * tp - type
2128 * cmp - comparison operation
2129 * fld - vsr_t field
2130 * svxvc - set VXVC bit
2131 */
2132 #define VSX_SCALAR_CMP(op, tp, cmp, fld, svxvc) \
2133 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, \
2134 ppc_vsr_t *xa, ppc_vsr_t *xb) \
2135 { \
2136 int flags; \
2137 bool r, vxvc; \
2138 \
2139 helper_reset_fpstatus(env); \
2140 \
2141 if (svxvc) { \
2142 r = tp##_##cmp(xb->fld, xa->fld, &env->fp_status); \
2143 } else { \
2144 r = tp##_##cmp##_quiet(xb->fld, xa->fld, &env->fp_status); \
2145 } \
2146 \
2147 flags = get_float_exception_flags(&env->fp_status); \
2148 if (unlikely(flags & float_flag_invalid)) { \
2149 vxvc = svxvc; \
2150 if (flags & float_flag_invalid_snan) { \
2151 float_invalid_op_vxsnan(env, GETPC()); \
2152 vxvc &= !(env->fpscr & FP_VE); \
2153 } \
2154 if (vxvc) { \
2155 float_invalid_op_vxvc(env, 0, GETPC()); \
2156 } \
2157 } \
2158 \
2159 memset(xt, 0, sizeof(*xt)); \
2160 memset(&xt->fld, -r, sizeof(xt->fld)); \
2161 do_float_check_status(env, false, GETPC()); \
2162 }
2163
2164 VSX_SCALAR_CMP(XSCMPEQDP, float64, eq, VsrD(0), 0)
2165 VSX_SCALAR_CMP(XSCMPGEDP, float64, le, VsrD(0), 1)
2166 VSX_SCALAR_CMP(XSCMPGTDP, float64, lt, VsrD(0), 1)
2167 VSX_SCALAR_CMP(XSCMPEQQP, float128, eq, f128, 0)
2168 VSX_SCALAR_CMP(XSCMPGEQP, float128, le, f128, 1)
2169 VSX_SCALAR_CMP(XSCMPGTQP, float128, lt, f128, 1)
2170
helper_xscmpexpdp(CPUPPCState * env,uint32_t opcode,ppc_vsr_t * xa,ppc_vsr_t * xb)2171 void helper_xscmpexpdp(CPUPPCState *env, uint32_t opcode,
2172 ppc_vsr_t *xa, ppc_vsr_t *xb)
2173 {
2174 int64_t exp_a, exp_b;
2175 uint32_t cc;
2176
2177 exp_a = extract64(xa->VsrD(0), 52, 11);
2178 exp_b = extract64(xb->VsrD(0), 52, 11);
2179
2180 if (unlikely(float64_is_any_nan(xa->VsrD(0)) ||
2181 float64_is_any_nan(xb->VsrD(0)))) {
2182 cc = CRF_SO;
2183 } else {
2184 if (exp_a < exp_b) {
2185 cc = CRF_LT;
2186 } else if (exp_a > exp_b) {
2187 cc = CRF_GT;
2188 } else {
2189 cc = CRF_EQ;
2190 }
2191 }
2192
2193 env->fpscr &= ~FP_FPCC;
2194 env->fpscr |= cc << FPSCR_FPCC;
2195 env->crf[BF(opcode)] = cc;
2196
2197 do_float_check_status(env, false, GETPC());
2198 }
2199
helper_xscmpexpqp(CPUPPCState * env,uint32_t opcode,ppc_vsr_t * xa,ppc_vsr_t * xb)2200 void helper_xscmpexpqp(CPUPPCState *env, uint32_t opcode,
2201 ppc_vsr_t *xa, ppc_vsr_t *xb)
2202 {
2203 int64_t exp_a, exp_b;
2204 uint32_t cc;
2205
2206 exp_a = extract64(xa->VsrD(0), 48, 15);
2207 exp_b = extract64(xb->VsrD(0), 48, 15);
2208
2209 if (unlikely(float128_is_any_nan(xa->f128) ||
2210 float128_is_any_nan(xb->f128))) {
2211 cc = CRF_SO;
2212 } else {
2213 if (exp_a < exp_b) {
2214 cc = CRF_LT;
2215 } else if (exp_a > exp_b) {
2216 cc = CRF_GT;
2217 } else {
2218 cc = CRF_EQ;
2219 }
2220 }
2221
2222 env->fpscr &= ~FP_FPCC;
2223 env->fpscr |= cc << FPSCR_FPCC;
2224 env->crf[BF(opcode)] = cc;
2225
2226 do_float_check_status(env, false, GETPC());
2227 }
2228
do_scalar_cmp(CPUPPCState * env,ppc_vsr_t * xa,ppc_vsr_t * xb,int crf_idx,bool ordered)2229 static inline void do_scalar_cmp(CPUPPCState *env, ppc_vsr_t *xa, ppc_vsr_t *xb,
2230 int crf_idx, bool ordered)
2231 {
2232 uint32_t cc;
2233 bool vxsnan_flag = false, vxvc_flag = false;
2234
2235 helper_reset_fpstatus(env);
2236
2237 switch (float64_compare(xa->VsrD(0), xb->VsrD(0), &env->fp_status)) {
2238 case float_relation_less:
2239 cc = CRF_LT;
2240 break;
2241 case float_relation_equal:
2242 cc = CRF_EQ;
2243 break;
2244 case float_relation_greater:
2245 cc = CRF_GT;
2246 break;
2247 case float_relation_unordered:
2248 cc = CRF_SO;
2249
2250 if (float64_is_signaling_nan(xa->VsrD(0), &env->fp_status) ||
2251 float64_is_signaling_nan(xb->VsrD(0), &env->fp_status)) {
2252 vxsnan_flag = true;
2253 if (!(env->fpscr & FP_VE) && ordered) {
2254 vxvc_flag = true;
2255 }
2256 } else if (float64_is_quiet_nan(xa->VsrD(0), &env->fp_status) ||
2257 float64_is_quiet_nan(xb->VsrD(0), &env->fp_status)) {
2258 if (ordered) {
2259 vxvc_flag = true;
2260 }
2261 }
2262
2263 break;
2264 default:
2265 g_assert_not_reached();
2266 }
2267
2268 env->fpscr &= ~FP_FPCC;
2269 env->fpscr |= cc << FPSCR_FPCC;
2270 env->crf[crf_idx] = cc;
2271
2272 if (vxsnan_flag) {
2273 float_invalid_op_vxsnan(env, GETPC());
2274 }
2275 if (vxvc_flag) {
2276 float_invalid_op_vxvc(env, 0, GETPC());
2277 }
2278
2279 do_float_check_status(env, false, GETPC());
2280 }
2281
helper_xscmpodp(CPUPPCState * env,uint32_t opcode,ppc_vsr_t * xa,ppc_vsr_t * xb)2282 void helper_xscmpodp(CPUPPCState *env, uint32_t opcode, ppc_vsr_t *xa,
2283 ppc_vsr_t *xb)
2284 {
2285 do_scalar_cmp(env, xa, xb, BF(opcode), true);
2286 }
2287
helper_xscmpudp(CPUPPCState * env,uint32_t opcode,ppc_vsr_t * xa,ppc_vsr_t * xb)2288 void helper_xscmpudp(CPUPPCState *env, uint32_t opcode, ppc_vsr_t *xa,
2289 ppc_vsr_t *xb)
2290 {
2291 do_scalar_cmp(env, xa, xb, BF(opcode), false);
2292 }
2293
do_scalar_cmpq(CPUPPCState * env,ppc_vsr_t * xa,ppc_vsr_t * xb,int crf_idx,bool ordered)2294 static inline void do_scalar_cmpq(CPUPPCState *env, ppc_vsr_t *xa,
2295 ppc_vsr_t *xb, int crf_idx, bool ordered)
2296 {
2297 uint32_t cc;
2298 bool vxsnan_flag = false, vxvc_flag = false;
2299
2300 helper_reset_fpstatus(env);
2301
2302 switch (float128_compare(xa->f128, xb->f128, &env->fp_status)) {
2303 case float_relation_less:
2304 cc = CRF_LT;
2305 break;
2306 case float_relation_equal:
2307 cc = CRF_EQ;
2308 break;
2309 case float_relation_greater:
2310 cc = CRF_GT;
2311 break;
2312 case float_relation_unordered:
2313 cc = CRF_SO;
2314
2315 if (float128_is_signaling_nan(xa->f128, &env->fp_status) ||
2316 float128_is_signaling_nan(xb->f128, &env->fp_status)) {
2317 vxsnan_flag = true;
2318 if (!(env->fpscr & FP_VE) && ordered) {
2319 vxvc_flag = true;
2320 }
2321 } else if (float128_is_quiet_nan(xa->f128, &env->fp_status) ||
2322 float128_is_quiet_nan(xb->f128, &env->fp_status)) {
2323 if (ordered) {
2324 vxvc_flag = true;
2325 }
2326 }
2327
2328 break;
2329 default:
2330 g_assert_not_reached();
2331 }
2332
2333 env->fpscr &= ~FP_FPCC;
2334 env->fpscr |= cc << FPSCR_FPCC;
2335 env->crf[crf_idx] = cc;
2336
2337 if (vxsnan_flag) {
2338 float_invalid_op_vxsnan(env, GETPC());
2339 }
2340 if (vxvc_flag) {
2341 float_invalid_op_vxvc(env, 0, GETPC());
2342 }
2343
2344 do_float_check_status(env, false, GETPC());
2345 }
2346
helper_xscmpoqp(CPUPPCState * env,uint32_t opcode,ppc_vsr_t * xa,ppc_vsr_t * xb)2347 void helper_xscmpoqp(CPUPPCState *env, uint32_t opcode, ppc_vsr_t *xa,
2348 ppc_vsr_t *xb)
2349 {
2350 do_scalar_cmpq(env, xa, xb, BF(opcode), true);
2351 }
2352
helper_xscmpuqp(CPUPPCState * env,uint32_t opcode,ppc_vsr_t * xa,ppc_vsr_t * xb)2353 void helper_xscmpuqp(CPUPPCState *env, uint32_t opcode, ppc_vsr_t *xa,
2354 ppc_vsr_t *xb)
2355 {
2356 do_scalar_cmpq(env, xa, xb, BF(opcode), false);
2357 }
2358
2359 /*
2360 * VSX_MAX_MIN - VSX floating point maximum/minimum
2361 * name - instruction mnemonic
2362 * op - operation (max or min)
2363 * nels - number of elements (1, 2 or 4)
2364 * tp - type (float32 or float64)
2365 * fld - vsr_t field (VsrD(*) or VsrW(*))
2366 */
2367 #define VSX_MAX_MIN(name, op, nels, tp, fld) \
2368 void helper_##name(CPUPPCState *env, ppc_vsr_t *xt, \
2369 ppc_vsr_t *xa, ppc_vsr_t *xb) \
2370 { \
2371 ppc_vsr_t t = { }; \
2372 int i; \
2373 \
2374 for (i = 0; i < nels; i++) { \
2375 t.fld = tp##_##op(xa->fld, xb->fld, &env->fp_status); \
2376 if (unlikely(tp##_is_signaling_nan(xa->fld, &env->fp_status) || \
2377 tp##_is_signaling_nan(xb->fld, &env->fp_status))) { \
2378 float_invalid_op_vxsnan(env, GETPC()); \
2379 } \
2380 } \
2381 \
2382 *xt = t; \
2383 do_float_check_status(env, false, GETPC()); \
2384 }
2385
2386 VSX_MAX_MIN(XSMAXDP, maxnum, 1, float64, VsrD(0))
2387 VSX_MAX_MIN(XVMAXDP, maxnum, 2, float64, VsrD(i))
2388 VSX_MAX_MIN(XVMAXSP, maxnum, 4, float32, VsrW(i))
2389 VSX_MAX_MIN(XSMINDP, minnum, 1, float64, VsrD(0))
2390 VSX_MAX_MIN(XVMINDP, minnum, 2, float64, VsrD(i))
2391 VSX_MAX_MIN(XVMINSP, minnum, 4, float32, VsrW(i))
2392
2393 #define VSX_MAX_MINC(name, max, tp, fld) \
2394 void helper_##name(CPUPPCState *env, \
2395 ppc_vsr_t *xt, ppc_vsr_t *xa, ppc_vsr_t *xb) \
2396 { \
2397 ppc_vsr_t t = { }; \
2398 bool first; \
2399 \
2400 helper_reset_fpstatus(env); \
2401 \
2402 if (max) { \
2403 first = tp##_le_quiet(xb->fld, xa->fld, &env->fp_status); \
2404 } else { \
2405 first = tp##_lt_quiet(xa->fld, xb->fld, &env->fp_status); \
2406 } \
2407 \
2408 if (first) { \
2409 t.fld = xa->fld; \
2410 } else { \
2411 t.fld = xb->fld; \
2412 if (env->fp_status.float_exception_flags & float_flag_invalid_snan) { \
2413 float_invalid_op_vxsnan(env, GETPC()); \
2414 } \
2415 } \
2416 \
2417 *xt = t; \
2418 }
2419
2420 VSX_MAX_MINC(XSMAXCDP, true, float64, VsrD(0));
2421 VSX_MAX_MINC(XSMINCDP, false, float64, VsrD(0));
2422 VSX_MAX_MINC(XSMAXCQP, true, float128, f128);
2423 VSX_MAX_MINC(XSMINCQP, false, float128, f128);
2424
2425 #define VSX_MAX_MINJ(name, max) \
2426 void helper_##name(CPUPPCState *env, \
2427 ppc_vsr_t *xt, ppc_vsr_t *xa, ppc_vsr_t *xb) \
2428 { \
2429 ppc_vsr_t t = { }; \
2430 bool vxsnan_flag = false, vex_flag = false; \
2431 \
2432 if (unlikely(float64_is_any_nan(xa->VsrD(0)))) { \
2433 if (float64_is_signaling_nan(xa->VsrD(0), &env->fp_status)) { \
2434 vxsnan_flag = true; \
2435 } \
2436 t.VsrD(0) = xa->VsrD(0); \
2437 } else if (unlikely(float64_is_any_nan(xb->VsrD(0)))) { \
2438 if (float64_is_signaling_nan(xb->VsrD(0), &env->fp_status)) { \
2439 vxsnan_flag = true; \
2440 } \
2441 t.VsrD(0) = xb->VsrD(0); \
2442 } else if (float64_is_zero(xa->VsrD(0)) && \
2443 float64_is_zero(xb->VsrD(0))) { \
2444 if (max) { \
2445 if (!float64_is_neg(xa->VsrD(0)) || \
2446 !float64_is_neg(xb->VsrD(0))) { \
2447 t.VsrD(0) = 0ULL; \
2448 } else { \
2449 t.VsrD(0) = 0x8000000000000000ULL; \
2450 } \
2451 } else { \
2452 if (float64_is_neg(xa->VsrD(0)) || \
2453 float64_is_neg(xb->VsrD(0))) { \
2454 t.VsrD(0) = 0x8000000000000000ULL; \
2455 } else { \
2456 t.VsrD(0) = 0ULL; \
2457 } \
2458 } \
2459 } else if ((max && \
2460 !float64_lt(xa->VsrD(0), xb->VsrD(0), &env->fp_status)) || \
2461 (!max && \
2462 float64_lt(xa->VsrD(0), xb->VsrD(0), &env->fp_status))) { \
2463 t.VsrD(0) = xa->VsrD(0); \
2464 } else { \
2465 t.VsrD(0) = xb->VsrD(0); \
2466 } \
2467 \
2468 vex_flag = (env->fpscr & FP_VE) && vxsnan_flag; \
2469 if (vxsnan_flag) { \
2470 float_invalid_op_vxsnan(env, GETPC()); \
2471 } \
2472 if (!vex_flag) { \
2473 *xt = t; \
2474 } \
2475 } \
2476
2477 VSX_MAX_MINJ(XSMAXJDP, 1);
2478 VSX_MAX_MINJ(XSMINJDP, 0);
2479
2480 /*
2481 * VSX_CMP - VSX floating point compare
2482 * op - instruction mnemonic
2483 * nels - number of elements (1, 2 or 4)
2484 * tp - type (float32 or float64)
2485 * fld - vsr_t field (VsrD(*) or VsrW(*))
2486 * cmp - comparison operation
2487 * svxvc - set VXVC bit
2488 * exp - expected result of comparison
2489 */
2490 #define VSX_CMP(op, nels, tp, fld, cmp, svxvc, exp) \
2491 uint32_t helper_##op(CPUPPCState *env, ppc_vsr_t *xt, \
2492 ppc_vsr_t *xa, ppc_vsr_t *xb) \
2493 { \
2494 ppc_vsr_t t = *xt; \
2495 uint32_t crf6 = 0; \
2496 int i; \
2497 int all_true = 1; \
2498 int all_false = 1; \
2499 \
2500 helper_reset_fpstatus(env); \
2501 \
2502 for (i = 0; i < nels; i++) { \
2503 if (unlikely(tp##_is_any_nan(xa->fld) || \
2504 tp##_is_any_nan(xb->fld))) { \
2505 if (tp##_is_signaling_nan(xa->fld, &env->fp_status) || \
2506 tp##_is_signaling_nan(xb->fld, &env->fp_status)) { \
2507 float_invalid_op_vxsnan(env, GETPC()); \
2508 } \
2509 if (svxvc) { \
2510 float_invalid_op_vxvc(env, 0, GETPC()); \
2511 } \
2512 t.fld = 0; \
2513 all_true = 0; \
2514 } else { \
2515 if (tp##_##cmp(xb->fld, xa->fld, &env->fp_status) == exp) { \
2516 t.fld = -1; \
2517 all_false = 0; \
2518 } else { \
2519 t.fld = 0; \
2520 all_true = 0; \
2521 } \
2522 } \
2523 } \
2524 \
2525 *xt = t; \
2526 crf6 = (all_true ? 0x8 : 0) | (all_false ? 0x2 : 0); \
2527 return crf6; \
2528 }
2529
2530 VSX_CMP(XVCMPEQDP, 2, float64, VsrD(i), eq, 0, 1)
2531 VSX_CMP(XVCMPGEDP, 2, float64, VsrD(i), le, 1, 1)
2532 VSX_CMP(XVCMPGTDP, 2, float64, VsrD(i), lt, 1, 1)
2533 VSX_CMP(XVCMPNEDP, 2, float64, VsrD(i), eq, 0, 0)
2534 VSX_CMP(XVCMPEQSP, 4, float32, VsrW(i), eq, 0, 1)
2535 VSX_CMP(XVCMPGESP, 4, float32, VsrW(i), le, 1, 1)
2536 VSX_CMP(XVCMPGTSP, 4, float32, VsrW(i), lt, 1, 1)
2537 VSX_CMP(XVCMPNESP, 4, float32, VsrW(i), eq, 0, 0)
2538
2539 /*
2540 * VSX_CVT_FP_TO_FP - VSX floating point/floating point conversion
2541 * op - instruction mnemonic
2542 * nels - number of elements (1, 2 or 4)
2543 * stp - source type (float32 or float64)
2544 * ttp - target type (float32 or float64)
2545 * sfld - source vsr_t field
2546 * tfld - target vsr_t field (f32 or f64)
2547 * sfifprf - set FI and FPRF
2548 */
2549 #define VSX_CVT_FP_TO_FP(op, nels, stp, ttp, sfld, tfld, sfifprf) \
2550 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
2551 { \
2552 ppc_vsr_t t = { }; \
2553 int i; \
2554 \
2555 helper_reset_fpstatus(env); \
2556 \
2557 for (i = 0; i < nels; i++) { \
2558 t.tfld = stp##_to_##ttp(xb->sfld, &env->fp_status); \
2559 if (unlikely(stp##_is_signaling_nan(xb->sfld, \
2560 &env->fp_status))) { \
2561 float_invalid_op_vxsnan(env, GETPC()); \
2562 t.tfld = ttp##_snan_to_qnan(t.tfld); \
2563 } \
2564 if (sfifprf) { \
2565 helper_compute_fprf_##ttp(env, t.tfld); \
2566 } \
2567 } \
2568 \
2569 *xt = t; \
2570 do_float_check_status(env, sfifprf, GETPC()); \
2571 }
2572
2573 VSX_CVT_FP_TO_FP(xscvspdp, 1, float32, float64, VsrW(0), VsrD(0), 1)
2574 VSX_CVT_FP_TO_FP(xvcvspdp, 2, float32, float64, VsrW(2 * i), VsrD(i), 0)
2575
2576 #define VSX_CVT_FP_TO_FP2(op, nels, stp, ttp, sfifprf) \
2577 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
2578 { \
2579 ppc_vsr_t t = { }; \
2580 int i; \
2581 \
2582 helper_reset_fpstatus(env); \
2583 \
2584 for (i = 0; i < nels; i++) { \
2585 t.VsrW(2 * i) = stp##_to_##ttp(xb->VsrD(i), &env->fp_status); \
2586 if (unlikely(stp##_is_signaling_nan(xb->VsrD(i), \
2587 &env->fp_status))) { \
2588 float_invalid_op_vxsnan(env, GETPC()); \
2589 t.VsrW(2 * i) = ttp##_snan_to_qnan(t.VsrW(2 * i)); \
2590 } \
2591 if (sfifprf) { \
2592 helper_compute_fprf_##ttp(env, t.VsrW(2 * i)); \
2593 } \
2594 t.VsrW(2 * i + 1) = t.VsrW(2 * i); \
2595 } \
2596 \
2597 *xt = t; \
2598 do_float_check_status(env, sfifprf, GETPC()); \
2599 }
2600
2601 VSX_CVT_FP_TO_FP2(xvcvdpsp, 2, float64, float32, 0)
2602 VSX_CVT_FP_TO_FP2(xscvdpsp, 1, float64, float32, 1)
2603
2604 /*
2605 * VSX_CVT_FP_TO_FP_VECTOR - VSX floating point/floating point conversion
2606 * op - instruction mnemonic
2607 * nels - number of elements (1, 2 or 4)
2608 * stp - source type (float32 or float64)
2609 * ttp - target type (float32 or float64)
2610 * sfld - source vsr_t field
2611 * tfld - target vsr_t field (f32 or f64)
2612 * sfprf - set FPRF
2613 */
2614 #define VSX_CVT_FP_TO_FP_VECTOR(op, nels, stp, ttp, sfld, tfld, sfprf) \
2615 void helper_##op(CPUPPCState *env, uint32_t opcode, \
2616 ppc_vsr_t *xt, ppc_vsr_t *xb) \
2617 { \
2618 ppc_vsr_t t = *xt; \
2619 int i; \
2620 \
2621 helper_reset_fpstatus(env); \
2622 \
2623 for (i = 0; i < nels; i++) { \
2624 t.tfld = stp##_to_##ttp(xb->sfld, &env->fp_status); \
2625 if (unlikely(stp##_is_signaling_nan(xb->sfld, \
2626 &env->fp_status))) { \
2627 float_invalid_op_vxsnan(env, GETPC()); \
2628 t.tfld = ttp##_snan_to_qnan(t.tfld); \
2629 } \
2630 if (sfprf) { \
2631 helper_compute_fprf_##ttp(env, t.tfld); \
2632 } \
2633 } \
2634 \
2635 *xt = t; \
2636 do_float_check_status(env, true, GETPC()); \
2637 }
2638
2639 VSX_CVT_FP_TO_FP_VECTOR(xscvdpqp, 1, float64, float128, VsrD(0), f128, 1)
2640
2641 /*
2642 * VSX_CVT_FP_TO_FP_HP - VSX floating point/floating point conversion
2643 * involving one half precision value
2644 * op - instruction mnemonic
2645 * nels - number of elements (1, 2 or 4)
2646 * stp - source type
2647 * ttp - target type
2648 * sfld - source vsr_t field
2649 * tfld - target vsr_t field
2650 * sfifprf - set FI and FPRF
2651 */
2652 #define VSX_CVT_FP_TO_FP_HP(op, nels, stp, ttp, sfld, tfld, sfifprf) \
2653 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
2654 { \
2655 ppc_vsr_t t = { }; \
2656 int i; \
2657 \
2658 helper_reset_fpstatus(env); \
2659 \
2660 for (i = 0; i < nels; i++) { \
2661 t.tfld = stp##_to_##ttp(xb->sfld, 1, &env->fp_status); \
2662 if (unlikely(stp##_is_signaling_nan(xb->sfld, \
2663 &env->fp_status))) { \
2664 float_invalid_op_vxsnan(env, GETPC()); \
2665 t.tfld = ttp##_snan_to_qnan(t.tfld); \
2666 } \
2667 if (sfifprf) { \
2668 helper_compute_fprf_##ttp(env, t.tfld); \
2669 } \
2670 } \
2671 \
2672 *xt = t; \
2673 do_float_check_status(env, sfifprf, GETPC()); \
2674 }
2675
2676 VSX_CVT_FP_TO_FP_HP(xscvdphp, 1, float64, float16, VsrD(0), VsrH(3), 1)
2677 VSX_CVT_FP_TO_FP_HP(xscvhpdp, 1, float16, float64, VsrH(3), VsrD(0), 1)
2678 VSX_CVT_FP_TO_FP_HP(xvcvsphp, 4, float32, float16, VsrW(i), VsrH(2 * i + 1), 0)
2679 VSX_CVT_FP_TO_FP_HP(xvcvhpsp, 4, float16, float32, VsrH(2 * i + 1), VsrW(i), 0)
2680
helper_XVCVSPBF16(CPUPPCState * env,ppc_vsr_t * xt,ppc_vsr_t * xb)2681 void helper_XVCVSPBF16(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb)
2682 {
2683 ppc_vsr_t t = { };
2684 int i, status;
2685
2686 helper_reset_fpstatus(env);
2687
2688 for (i = 0; i < 4; i++) {
2689 t.VsrH(2 * i + 1) = float32_to_bfloat16(xb->VsrW(i), &env->fp_status);
2690 }
2691
2692 status = get_float_exception_flags(&env->fp_status);
2693 if (unlikely(status & float_flag_invalid_snan)) {
2694 float_invalid_op_vxsnan(env, GETPC());
2695 }
2696
2697 *xt = t;
2698 do_float_check_status(env, false, GETPC());
2699 }
2700
helper_XSCVQPDP(CPUPPCState * env,uint32_t ro,ppc_vsr_t * xt,ppc_vsr_t * xb)2701 void helper_XSCVQPDP(CPUPPCState *env, uint32_t ro, ppc_vsr_t *xt,
2702 ppc_vsr_t *xb)
2703 {
2704 ppc_vsr_t t = { };
2705 float_status tstat;
2706
2707 helper_reset_fpstatus(env);
2708
2709 tstat = env->fp_status;
2710 if (ro != 0) {
2711 tstat.float_rounding_mode = float_round_to_odd;
2712 }
2713
2714 t.VsrD(0) = float128_to_float64(xb->f128, &tstat);
2715 env->fp_status.float_exception_flags |= tstat.float_exception_flags;
2716 if (unlikely(float128_is_signaling_nan(xb->f128, &tstat))) {
2717 float_invalid_op_vxsnan(env, GETPC());
2718 t.VsrD(0) = float64_snan_to_qnan(t.VsrD(0));
2719 }
2720 helper_compute_fprf_float64(env, t.VsrD(0));
2721
2722 *xt = t;
2723 do_float_check_status(env, true, GETPC());
2724 }
2725
helper_xscvdpspn(CPUPPCState * env,uint64_t xb)2726 uint64_t helper_xscvdpspn(CPUPPCState *env, uint64_t xb)
2727 {
2728 uint64_t result, sign, exp, frac;
2729
2730 helper_reset_fpstatus(env);
2731 float_status tstat = env->fp_status;
2732 set_float_exception_flags(0, &tstat);
2733
2734 sign = extract64(xb, 63, 1);
2735 exp = extract64(xb, 52, 11);
2736 frac = extract64(xb, 0, 52) | 0x10000000000000ULL;
2737
2738 if (unlikely(exp == 0 && extract64(frac, 0, 52) != 0)) {
2739 /* DP denormal operand. */
2740 /* Exponent override to DP min exp. */
2741 exp = 1;
2742 /* Implicit bit override to 0. */
2743 frac = deposit64(frac, 53, 1, 0);
2744 }
2745
2746 if (unlikely(exp < 897 && frac != 0)) {
2747 /* SP tiny operand. */
2748 if (897 - exp > 63) {
2749 frac = 0;
2750 } else {
2751 /* Denormalize until exp = SP min exp. */
2752 frac >>= (897 - exp);
2753 }
2754 /* Exponent override to SP min exp - 1. */
2755 exp = 896;
2756 }
2757
2758 result = sign << 31;
2759 result |= extract64(exp, 10, 1) << 30;
2760 result |= extract64(exp, 0, 7) << 23;
2761 result |= extract64(frac, 29, 23);
2762
2763 /* hardware replicates result to both words of the doubleword result. */
2764 return (result << 32) | result;
2765 }
2766
helper_XSCVSPDPN(uint64_t xb)2767 uint64_t helper_XSCVSPDPN(uint64_t xb)
2768 {
2769 return helper_todouble(xb >> 32);
2770 }
2771
2772 /*
2773 * VSX_CVT_FP_TO_INT - VSX floating point to integer conversion
2774 * op - instruction mnemonic
2775 * nels - number of elements (1, 2 or 4)
2776 * stp - source type (float32 or float64)
2777 * ttp - target type (int32, uint32, int64 or uint64)
2778 * sfld - source vsr_t field
2779 * tfld - target vsr_t field
2780 * sfi - set FI
2781 * rnan - resulting NaN
2782 */
2783 #define VSX_CVT_FP_TO_INT(op, nels, stp, ttp, sfld, tfld, sfi, rnan) \
2784 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
2785 { \
2786 int all_flags = 0; \
2787 ppc_vsr_t t = { }; \
2788 int i, flags; \
2789 \
2790 for (i = 0; i < nels; i++) { \
2791 helper_reset_fpstatus(env); \
2792 t.tfld = stp##_to_##ttp##_round_to_zero(xb->sfld, &env->fp_status); \
2793 flags = env->fp_status.float_exception_flags; \
2794 all_flags |= flags; \
2795 if (unlikely(flags & float_flag_invalid)) { \
2796 t.tfld = float_invalid_cvt(env, flags, t.tfld, rnan, 0, GETPC());\
2797 } \
2798 } \
2799 \
2800 *xt = t; \
2801 env->fp_status.float_exception_flags = all_flags; \
2802 do_float_check_status(env, sfi, GETPC()); \
2803 }
2804
2805 VSX_CVT_FP_TO_INT(xscvdpsxds, 1, float64, int64, VsrD(0), VsrD(0), true, \
2806 0x8000000000000000ULL)
2807 VSX_CVT_FP_TO_INT(xscvdpuxds, 1, float64, uint64, VsrD(0), VsrD(0), true, 0ULL)
2808 VSX_CVT_FP_TO_INT(xvcvdpsxds, 2, float64, int64, VsrD(i), VsrD(i), false, \
2809 0x8000000000000000ULL)
2810 VSX_CVT_FP_TO_INT(xvcvdpuxds, 2, float64, uint64, VsrD(i), VsrD(i), false, \
2811 0ULL)
2812 VSX_CVT_FP_TO_INT(xvcvspsxds, 2, float32, int64, VsrW(2 * i), VsrD(i), false, \
2813 0x8000000000000000ULL)
2814 VSX_CVT_FP_TO_INT(xvcvspsxws, 4, float32, int32, VsrW(i), VsrW(i), false, \
2815 0x80000000ULL)
2816 VSX_CVT_FP_TO_INT(xvcvspuxds, 2, float32, uint64, VsrW(2 * i), VsrD(i), \
2817 false, 0ULL)
2818 VSX_CVT_FP_TO_INT(xvcvspuxws, 4, float32, uint32, VsrW(i), VsrW(i), false, 0U)
2819
2820 #define VSX_CVT_FP_TO_INT128(op, tp, rnan) \
2821 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
2822 { \
2823 ppc_vsr_t t; \
2824 int flags; \
2825 \
2826 helper_reset_fpstatus(env); \
2827 t.s128 = float128_to_##tp##_round_to_zero(xb->f128, &env->fp_status); \
2828 flags = get_float_exception_flags(&env->fp_status); \
2829 if (unlikely(flags & float_flag_invalid)) { \
2830 t.VsrD(0) = float_invalid_cvt(env, flags, t.VsrD(0), rnan, 0, GETPC());\
2831 t.VsrD(1) = -(t.VsrD(0) & 1); \
2832 } \
2833 \
2834 *xt = t; \
2835 do_float_check_status(env, true, GETPC()); \
2836 }
2837
2838 VSX_CVT_FP_TO_INT128(XSCVQPUQZ, uint128, 0)
2839 VSX_CVT_FP_TO_INT128(XSCVQPSQZ, int128, 0x8000000000000000ULL);
2840
2841 /*
2842 * Likewise, except that the result is duplicated into both subwords.
2843 * Power ISA v3.1 has Programming Notes for these insns:
2844 * Previous versions of the architecture allowed the contents of
2845 * word 0 of the result register to be undefined. However, all
2846 * processors that support this instruction write the result into
2847 * words 0 and 1 (and words 2 and 3) of the result register, as
2848 * is required by this version of the architecture.
2849 */
2850 #define VSX_CVT_FP_TO_INT2(op, nels, stp, ttp, sfi, rnan) \
2851 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
2852 { \
2853 int all_flags = 0; \
2854 ppc_vsr_t t = { }; \
2855 int i, flags; \
2856 \
2857 for (i = 0; i < nels; i++) { \
2858 helper_reset_fpstatus(env); \
2859 t.VsrW(2 * i) = stp##_to_##ttp##_round_to_zero(xb->VsrD(i), \
2860 &env->fp_status); \
2861 flags = env->fp_status.float_exception_flags; \
2862 all_flags |= flags; \
2863 if (unlikely(flags & float_flag_invalid)) { \
2864 t.VsrW(2 * i) = float_invalid_cvt(env, flags, t.VsrW(2 * i), \
2865 rnan, 0, GETPC()); \
2866 } \
2867 t.VsrW(2 * i + 1) = t.VsrW(2 * i); \
2868 } \
2869 \
2870 *xt = t; \
2871 env->fp_status.float_exception_flags = all_flags; \
2872 do_float_check_status(env, sfi, GETPC()); \
2873 }
2874
2875 VSX_CVT_FP_TO_INT2(xscvdpsxws, 1, float64, int32, true, 0x80000000U)
2876 VSX_CVT_FP_TO_INT2(xscvdpuxws, 1, float64, uint32, true, 0U)
2877 VSX_CVT_FP_TO_INT2(xvcvdpsxws, 2, float64, int32, false, 0x80000000U)
2878 VSX_CVT_FP_TO_INT2(xvcvdpuxws, 2, float64, uint32, false, 0U)
2879
2880 /*
2881 * VSX_CVT_FP_TO_INT_VECTOR - VSX floating point to integer conversion
2882 * op - instruction mnemonic
2883 * stp - source type (float32 or float64)
2884 * ttp - target type (int32, uint32, int64 or uint64)
2885 * sfld - source vsr_t field
2886 * tfld - target vsr_t field
2887 * rnan - resulting NaN
2888 */
2889 #define VSX_CVT_FP_TO_INT_VECTOR(op, stp, ttp, sfld, tfld, rnan) \
2890 void helper_##op(CPUPPCState *env, uint32_t opcode, \
2891 ppc_vsr_t *xt, ppc_vsr_t *xb) \
2892 { \
2893 ppc_vsr_t t = { }; \
2894 int flags; \
2895 \
2896 helper_reset_fpstatus(env); \
2897 \
2898 t.tfld = stp##_to_##ttp##_round_to_zero(xb->sfld, &env->fp_status); \
2899 flags = get_float_exception_flags(&env->fp_status); \
2900 if (flags & float_flag_invalid) { \
2901 t.tfld = float_invalid_cvt(env, flags, t.tfld, rnan, 0, GETPC()); \
2902 } \
2903 \
2904 *xt = t; \
2905 do_float_check_status(env, true, GETPC()); \
2906 }
2907
2908 VSX_CVT_FP_TO_INT_VECTOR(xscvqpsdz, float128, int64, f128, VsrD(0), \
2909 0x8000000000000000ULL)
2910 VSX_CVT_FP_TO_INT_VECTOR(xscvqpswz, float128, int32, f128, VsrD(0), \
2911 0xffffffff80000000ULL)
2912 VSX_CVT_FP_TO_INT_VECTOR(xscvqpudz, float128, uint64, f128, VsrD(0), 0x0ULL)
2913 VSX_CVT_FP_TO_INT_VECTOR(xscvqpuwz, float128, uint32, f128, VsrD(0), 0x0ULL)
2914
2915 /*
2916 * VSX_CVT_INT_TO_FP - VSX integer to floating point conversion
2917 * op - instruction mnemonic
2918 * nels - number of elements (1, 2 or 4)
2919 * stp - source type (int32, uint32, int64 or uint64)
2920 * ttp - target type (float32 or float64)
2921 * sfld - source vsr_t field
2922 * tfld - target vsr_t field
2923 * jdef - definition of the j index (i or 2*i)
2924 * sfifprf - set FI and FPRF
2925 */
2926 #define VSX_CVT_INT_TO_FP(op, nels, stp, ttp, sfld, tfld, sfifprf, r2sp)\
2927 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
2928 { \
2929 ppc_vsr_t t = { }; \
2930 int i; \
2931 \
2932 helper_reset_fpstatus(env); \
2933 \
2934 for (i = 0; i < nels; i++) { \
2935 t.tfld = stp##_to_##ttp(xb->sfld, &env->fp_status); \
2936 if (r2sp) { \
2937 t.tfld = do_frsp(env, t.tfld, GETPC()); \
2938 } \
2939 if (sfifprf) { \
2940 helper_compute_fprf_float64(env, t.tfld); \
2941 } \
2942 } \
2943 \
2944 *xt = t; \
2945 do_float_check_status(env, sfifprf, GETPC()); \
2946 }
2947
2948 VSX_CVT_INT_TO_FP(xscvsxddp, 1, int64, float64, VsrD(0), VsrD(0), 1, 0)
2949 VSX_CVT_INT_TO_FP(xscvuxddp, 1, uint64, float64, VsrD(0), VsrD(0), 1, 0)
2950 VSX_CVT_INT_TO_FP(xscvsxdsp, 1, int64, float64, VsrD(0), VsrD(0), 1, 1)
2951 VSX_CVT_INT_TO_FP(xscvuxdsp, 1, uint64, float64, VsrD(0), VsrD(0), 1, 1)
2952 VSX_CVT_INT_TO_FP(xvcvsxddp, 2, int64, float64, VsrD(i), VsrD(i), 0, 0)
2953 VSX_CVT_INT_TO_FP(xvcvuxddp, 2, uint64, float64, VsrD(i), VsrD(i), 0, 0)
2954 VSX_CVT_INT_TO_FP(xvcvsxwdp, 2, int32, float64, VsrW(2 * i), VsrD(i), 0, 0)
2955 VSX_CVT_INT_TO_FP(xvcvuxwdp, 2, uint64, float64, VsrW(2 * i), VsrD(i), 0, 0)
2956 VSX_CVT_INT_TO_FP(xvcvsxwsp, 4, int32, float32, VsrW(i), VsrW(i), 0, 0)
2957 VSX_CVT_INT_TO_FP(xvcvuxwsp, 4, uint32, float32, VsrW(i), VsrW(i), 0, 0)
2958
2959 #define VSX_CVT_INT_TO_FP2(op, stp, ttp) \
2960 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
2961 { \
2962 ppc_vsr_t t = { }; \
2963 int i; \
2964 \
2965 for (i = 0; i < 2; i++) { \
2966 t.VsrW(2 * i) = stp##_to_##ttp(xb->VsrD(i), &env->fp_status); \
2967 t.VsrW(2 * i + 1) = t.VsrW(2 * i); \
2968 } \
2969 \
2970 *xt = t; \
2971 do_float_check_status(env, false, GETPC()); \
2972 }
2973
2974 VSX_CVT_INT_TO_FP2(xvcvsxdsp, int64, float32)
2975 VSX_CVT_INT_TO_FP2(xvcvuxdsp, uint64, float32)
2976
2977 #define VSX_CVT_INT128_TO_FP(op, tp) \
2978 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb)\
2979 { \
2980 helper_reset_fpstatus(env); \
2981 xt->f128 = tp##_to_float128(xb->s128, &env->fp_status); \
2982 helper_compute_fprf_float128(env, xt->f128); \
2983 do_float_check_status(env, true, GETPC()); \
2984 }
2985
2986 VSX_CVT_INT128_TO_FP(XSCVUQQP, uint128);
2987 VSX_CVT_INT128_TO_FP(XSCVSQQP, int128);
2988
2989 /*
2990 * VSX_CVT_INT_TO_FP_VECTOR - VSX integer to floating point conversion
2991 * op - instruction mnemonic
2992 * stp - source type (int32, uint32, int64 or uint64)
2993 * ttp - target type (float32 or float64)
2994 * sfld - source vsr_t field
2995 * tfld - target vsr_t field
2996 */
2997 #define VSX_CVT_INT_TO_FP_VECTOR(op, stp, ttp, sfld, tfld) \
2998 void helper_##op(CPUPPCState *env, uint32_t opcode, \
2999 ppc_vsr_t *xt, ppc_vsr_t *xb) \
3000 { \
3001 ppc_vsr_t t = *xt; \
3002 \
3003 helper_reset_fpstatus(env); \
3004 t.tfld = stp##_to_##ttp(xb->sfld, &env->fp_status); \
3005 helper_compute_fprf_##ttp(env, t.tfld); \
3006 \
3007 *xt = t; \
3008 do_float_check_status(env, true, GETPC()); \
3009 }
3010
3011 VSX_CVT_INT_TO_FP_VECTOR(xscvsdqp, int64, float128, VsrD(0), f128)
3012 VSX_CVT_INT_TO_FP_VECTOR(xscvudqp, uint64, float128, VsrD(0), f128)
3013
3014 /*
3015 * For "use current rounding mode", define a value that will not be
3016 * one of the existing rounding model enums.
3017 */
3018 #define FLOAT_ROUND_CURRENT (float_round_nearest_even + float_round_down + \
3019 float_round_up + float_round_to_zero)
3020
3021 /*
3022 * VSX_ROUND - VSX floating point round
3023 * op - instruction mnemonic
3024 * nels - number of elements (1, 2 or 4)
3025 * tp - type (float32 or float64)
3026 * fld - vsr_t field (VsrD(*) or VsrW(*))
3027 * rmode - rounding mode
3028 * sfifprf - set FI and FPRF
3029 */
3030 #define VSX_ROUND(op, nels, tp, fld, rmode, sfifprf) \
3031 void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
3032 { \
3033 ppc_vsr_t t = { }; \
3034 int i; \
3035 FloatRoundMode curr_rounding_mode; \
3036 \
3037 helper_reset_fpstatus(env); \
3038 \
3039 if (rmode != FLOAT_ROUND_CURRENT) { \
3040 curr_rounding_mode = get_float_rounding_mode(&env->fp_status); \
3041 set_float_rounding_mode(rmode, &env->fp_status); \
3042 } \
3043 \
3044 for (i = 0; i < nels; i++) { \
3045 if (unlikely(tp##_is_signaling_nan(xb->fld, \
3046 &env->fp_status))) { \
3047 float_invalid_op_vxsnan(env, GETPC()); \
3048 t.fld = tp##_snan_to_qnan(xb->fld); \
3049 } else { \
3050 t.fld = tp##_round_to_int(xb->fld, &env->fp_status); \
3051 } \
3052 if (sfifprf) { \
3053 helper_compute_fprf_float64(env, t.fld); \
3054 } \
3055 } \
3056 \
3057 /* \
3058 * If this is not a "use current rounding mode" instruction, \
3059 * then inhibit setting of the XX bit and restore rounding \
3060 * mode from FPSCR \
3061 */ \
3062 if (rmode != FLOAT_ROUND_CURRENT) { \
3063 set_float_rounding_mode(curr_rounding_mode, &env->fp_status); \
3064 env->fp_status.float_exception_flags &= ~float_flag_inexact; \
3065 } \
3066 \
3067 *xt = t; \
3068 do_float_check_status(env, sfifprf, GETPC()); \
3069 }
3070
3071 VSX_ROUND(xsrdpi, 1, float64, VsrD(0), float_round_ties_away, 1)
3072 VSX_ROUND(xsrdpic, 1, float64, VsrD(0), FLOAT_ROUND_CURRENT, 1)
3073 VSX_ROUND(xsrdpim, 1, float64, VsrD(0), float_round_down, 1)
3074 VSX_ROUND(xsrdpip, 1, float64, VsrD(0), float_round_up, 1)
3075 VSX_ROUND(xsrdpiz, 1, float64, VsrD(0), float_round_to_zero, 1)
3076
3077 VSX_ROUND(xvrdpi, 2, float64, VsrD(i), float_round_ties_away, 0)
3078 VSX_ROUND(xvrdpic, 2, float64, VsrD(i), FLOAT_ROUND_CURRENT, 0)
3079 VSX_ROUND(xvrdpim, 2, float64, VsrD(i), float_round_down, 0)
3080 VSX_ROUND(xvrdpip, 2, float64, VsrD(i), float_round_up, 0)
3081 VSX_ROUND(xvrdpiz, 2, float64, VsrD(i), float_round_to_zero, 0)
3082
3083 VSX_ROUND(xvrspi, 4, float32, VsrW(i), float_round_ties_away, 0)
3084 VSX_ROUND(xvrspic, 4, float32, VsrW(i), FLOAT_ROUND_CURRENT, 0)
3085 VSX_ROUND(xvrspim, 4, float32, VsrW(i), float_round_down, 0)
3086 VSX_ROUND(xvrspip, 4, float32, VsrW(i), float_round_up, 0)
3087 VSX_ROUND(xvrspiz, 4, float32, VsrW(i), float_round_to_zero, 0)
3088
helper_xsrsp(CPUPPCState * env,uint64_t xb)3089 uint64_t helper_xsrsp(CPUPPCState *env, uint64_t xb)
3090 {
3091 helper_reset_fpstatus(env);
3092
3093 uint64_t xt = do_frsp(env, xb, GETPC());
3094
3095 helper_compute_fprf_float64(env, xt);
3096 do_float_check_status(env, true, GETPC());
3097 return xt;
3098 }
3099
helper_XVXSIGSP(ppc_vsr_t * xt,ppc_vsr_t * xb)3100 void helper_XVXSIGSP(ppc_vsr_t *xt, ppc_vsr_t *xb)
3101 {
3102 ppc_vsr_t t = { };
3103 uint32_t exp, i, fraction;
3104
3105 for (i = 0; i < 4; i++) {
3106 exp = (xb->VsrW(i) >> 23) & 0xFF;
3107 fraction = xb->VsrW(i) & 0x7FFFFF;
3108 if (exp != 0 && exp != 255) {
3109 t.VsrW(i) = fraction | 0x00800000;
3110 } else {
3111 t.VsrW(i) = fraction;
3112 }
3113 }
3114 *xt = t;
3115 }
3116
3117 #define VSX_TSTDC(tp) \
3118 static int32_t tp##_tstdc(tp b, uint32_t dcmx) \
3119 { \
3120 uint32_t match = 0; \
3121 uint32_t sign = tp##_is_neg(b); \
3122 if (tp##_is_any_nan(b)) { \
3123 match = extract32(dcmx, 6, 1); \
3124 } else if (tp##_is_infinity(b)) { \
3125 match = extract32(dcmx, 4 + !sign, 1); \
3126 } else if (tp##_is_zero(b)) { \
3127 match = extract32(dcmx, 2 + !sign, 1); \
3128 } else if (tp##_is_zero_or_denormal(b)) { \
3129 match = extract32(dcmx, 0 + !sign, 1); \
3130 } \
3131 return (match != 0); \
3132 }
3133
3134 VSX_TSTDC(float32)
VSX_TSTDC(float64)3135 VSX_TSTDC(float64)
3136 VSX_TSTDC(float128)
3137 #undef VSX_TSTDC
3138
3139 void helper_XVTSTDCDP(ppc_vsr_t *t, ppc_vsr_t *b, uint64_t dcmx, uint32_t v)
3140 {
3141 int i;
3142 for (i = 0; i < 2; i++) {
3143 t->s64[i] = (int64_t)-float64_tstdc(b->f64[i], dcmx);
3144 }
3145 }
3146
helper_XVTSTDCSP(ppc_vsr_t * t,ppc_vsr_t * b,uint64_t dcmx,uint32_t v)3147 void helper_XVTSTDCSP(ppc_vsr_t *t, ppc_vsr_t *b, uint64_t dcmx, uint32_t v)
3148 {
3149 int i;
3150 for (i = 0; i < 4; i++) {
3151 t->s32[i] = (int32_t)-float32_tstdc(b->f32[i], dcmx);
3152 }
3153 }
3154
not_SP_value(float64 val)3155 static bool not_SP_value(float64 val)
3156 {
3157 return val != helper_todouble(helper_tosingle(val));
3158 }
3159
3160 /*
3161 * VSX_XS_TSTDC - VSX Scalar Test Data Class
3162 * NAME - instruction name
3163 * FLD - vsr_t field (VsrD(0) or f128)
3164 * TP - type (float64 or float128)
3165 */
3166 #define VSX_XS_TSTDC(NAME, FLD, TP) \
3167 void helper_##NAME(CPUPPCState *env, uint32_t bf, \
3168 uint32_t dcmx, ppc_vsr_t *b) \
3169 { \
3170 uint32_t cc, match, sign = TP##_is_neg(b->FLD); \
3171 match = TP##_tstdc(b->FLD, dcmx); \
3172 cc = sign << CRF_LT_BIT | match << CRF_EQ_BIT; \
3173 env->fpscr &= ~FP_FPCC; \
3174 env->fpscr |= cc << FPSCR_FPCC; \
3175 env->crf[bf] = cc; \
3176 }
3177
3178 VSX_XS_TSTDC(XSTSTDCDP, VsrD(0), float64)
VSX_XS_TSTDC(XSTSTDCQP,f128,float128)3179 VSX_XS_TSTDC(XSTSTDCQP, f128, float128)
3180 #undef VSX_XS_TSTDC
3181
3182 void helper_XSTSTDCSP(CPUPPCState *env, uint32_t bf,
3183 uint32_t dcmx, ppc_vsr_t *b)
3184 {
3185 uint32_t cc, match, sign = float64_is_neg(b->VsrD(0));
3186 uint32_t exp = (b->VsrD(0) >> 52) & 0x7FF;
3187 int not_sp = (int)not_SP_value(b->VsrD(0));
3188 match = float64_tstdc(b->VsrD(0), dcmx) || (exp > 0 && exp < 0x381);
3189 cc = sign << CRF_LT_BIT | match << CRF_EQ_BIT | not_sp << CRF_SO_BIT;
3190 env->fpscr &= ~FP_FPCC;
3191 env->fpscr |= cc << FPSCR_FPCC;
3192 env->crf[bf] = cc;
3193 }
3194
helper_xsrqpi(CPUPPCState * env,uint32_t opcode,ppc_vsr_t * xt,ppc_vsr_t * xb)3195 void helper_xsrqpi(CPUPPCState *env, uint32_t opcode,
3196 ppc_vsr_t *xt, ppc_vsr_t *xb)
3197 {
3198 ppc_vsr_t t = { };
3199 uint8_t r = Rrm(opcode);
3200 uint8_t ex = Rc(opcode);
3201 uint8_t rmc = RMC(opcode);
3202 uint8_t rmode = 0;
3203 float_status tstat;
3204
3205 helper_reset_fpstatus(env);
3206
3207 if (r == 0 && rmc == 0) {
3208 rmode = float_round_ties_away;
3209 } else if (r == 0 && rmc == 0x3) {
3210 rmode = env->fpscr & FP_RN;
3211 } else if (r == 1) {
3212 switch (rmc) {
3213 case 0:
3214 rmode = float_round_nearest_even;
3215 break;
3216 case 1:
3217 rmode = float_round_to_zero;
3218 break;
3219 case 2:
3220 rmode = float_round_up;
3221 break;
3222 case 3:
3223 rmode = float_round_down;
3224 break;
3225 default:
3226 abort();
3227 }
3228 }
3229
3230 tstat = env->fp_status;
3231 set_float_exception_flags(0, &tstat);
3232 set_float_rounding_mode(rmode, &tstat);
3233 t.f128 = float128_round_to_int(xb->f128, &tstat);
3234 env->fp_status.float_exception_flags |= tstat.float_exception_flags;
3235
3236 if (unlikely(tstat.float_exception_flags & float_flag_invalid_snan)) {
3237 float_invalid_op_vxsnan(env, GETPC());
3238 }
3239
3240 if (ex == 0 && (tstat.float_exception_flags & float_flag_inexact)) {
3241 env->fp_status.float_exception_flags &= ~float_flag_inexact;
3242 }
3243
3244 helper_compute_fprf_float128(env, t.f128);
3245 do_float_check_status(env, true, GETPC());
3246 *xt = t;
3247 }
3248
helper_xsrqpxp(CPUPPCState * env,uint32_t opcode,ppc_vsr_t * xt,ppc_vsr_t * xb)3249 void helper_xsrqpxp(CPUPPCState *env, uint32_t opcode,
3250 ppc_vsr_t *xt, ppc_vsr_t *xb)
3251 {
3252 ppc_vsr_t t = { };
3253 uint8_t r = Rrm(opcode);
3254 uint8_t rmc = RMC(opcode);
3255 uint8_t rmode = 0;
3256 floatx80 round_res;
3257 float_status tstat;
3258
3259 helper_reset_fpstatus(env);
3260
3261 if (r == 0 && rmc == 0) {
3262 rmode = float_round_ties_away;
3263 } else if (r == 0 && rmc == 0x3) {
3264 rmode = env->fpscr & FP_RN;
3265 } else if (r == 1) {
3266 switch (rmc) {
3267 case 0:
3268 rmode = float_round_nearest_even;
3269 break;
3270 case 1:
3271 rmode = float_round_to_zero;
3272 break;
3273 case 2:
3274 rmode = float_round_up;
3275 break;
3276 case 3:
3277 rmode = float_round_down;
3278 break;
3279 default:
3280 abort();
3281 }
3282 }
3283
3284 tstat = env->fp_status;
3285 set_float_exception_flags(0, &tstat);
3286 set_float_rounding_mode(rmode, &tstat);
3287 round_res = float128_to_floatx80(xb->f128, &tstat);
3288 t.f128 = floatx80_to_float128(round_res, &tstat);
3289 env->fp_status.float_exception_flags |= tstat.float_exception_flags;
3290
3291 if (unlikely(tstat.float_exception_flags & float_flag_invalid_snan)) {
3292 float_invalid_op_vxsnan(env, GETPC());
3293 t.f128 = float128_snan_to_qnan(t.f128);
3294 }
3295
3296 helper_compute_fprf_float128(env, t.f128);
3297 *xt = t;
3298 do_float_check_status(env, true, GETPC());
3299 }
3300
helper_xssqrtqp(CPUPPCState * env,uint32_t opcode,ppc_vsr_t * xt,ppc_vsr_t * xb)3301 void helper_xssqrtqp(CPUPPCState *env, uint32_t opcode,
3302 ppc_vsr_t *xt, ppc_vsr_t *xb)
3303 {
3304 ppc_vsr_t t = { };
3305 float_status tstat;
3306
3307 helper_reset_fpstatus(env);
3308
3309 tstat = env->fp_status;
3310 if (unlikely(Rc(opcode) != 0)) {
3311 tstat.float_rounding_mode = float_round_to_odd;
3312 }
3313
3314 set_float_exception_flags(0, &tstat);
3315 t.f128 = float128_sqrt(xb->f128, &tstat);
3316 env->fp_status.float_exception_flags |= tstat.float_exception_flags;
3317
3318 if (unlikely(tstat.float_exception_flags & float_flag_invalid)) {
3319 float_invalid_op_sqrt(env, tstat.float_exception_flags, 1, GETPC());
3320 }
3321
3322 helper_compute_fprf_float128(env, t.f128);
3323 *xt = t;
3324 do_float_check_status(env, true, GETPC());
3325 }
3326
helper_xssubqp(CPUPPCState * env,uint32_t opcode,ppc_vsr_t * xt,ppc_vsr_t * xa,ppc_vsr_t * xb)3327 void helper_xssubqp(CPUPPCState *env, uint32_t opcode,
3328 ppc_vsr_t *xt, ppc_vsr_t *xa, ppc_vsr_t *xb)
3329 {
3330 ppc_vsr_t t = *xt;
3331 float_status tstat;
3332
3333 helper_reset_fpstatus(env);
3334
3335 tstat = env->fp_status;
3336 if (unlikely(Rc(opcode) != 0)) {
3337 tstat.float_rounding_mode = float_round_to_odd;
3338 }
3339
3340 set_float_exception_flags(0, &tstat);
3341 t.f128 = float128_sub(xa->f128, xb->f128, &tstat);
3342 env->fp_status.float_exception_flags |= tstat.float_exception_flags;
3343
3344 if (unlikely(tstat.float_exception_flags & float_flag_invalid)) {
3345 float_invalid_op_addsub(env, tstat.float_exception_flags, 1, GETPC());
3346 }
3347
3348 helper_compute_fprf_float128(env, t.f128);
3349 *xt = t;
3350 do_float_check_status(env, true, GETPC());
3351 }
3352
vsxger_excp(CPUPPCState * env,uintptr_t retaddr)3353 static inline void vsxger_excp(CPUPPCState *env, uintptr_t retaddr)
3354 {
3355 /*
3356 * XV*GER instructions execute and set the FPSCR as if exceptions
3357 * are disabled and only at the end throw an exception
3358 */
3359 target_ulong enable;
3360 enable = env->fpscr & (FP_ENABLES | FP_FI | FP_FR);
3361 env->fpscr &= ~(FP_ENABLES | FP_FI | FP_FR);
3362 int status = get_float_exception_flags(&env->fp_status);
3363 if (unlikely(status & float_flag_invalid)) {
3364 if (status & float_flag_invalid_snan) {
3365 float_invalid_op_vxsnan(env, 0);
3366 }
3367 if (status & float_flag_invalid_imz) {
3368 float_invalid_op_vximz(env, false, 0);
3369 }
3370 if (status & float_flag_invalid_isi) {
3371 float_invalid_op_vxisi(env, false, 0);
3372 }
3373 }
3374 do_float_check_status(env, false, retaddr);
3375 env->fpscr |= enable;
3376 do_fpscr_check_status(env, retaddr);
3377 }
3378
3379 typedef float64 extract_f16(float16, float_status *);
3380
extract_hf16(float16 in,float_status * fp_status)3381 static float64 extract_hf16(float16 in, float_status *fp_status)
3382 {
3383 return float16_to_float64(in, true, fp_status);
3384 }
3385
extract_bf16(bfloat16 in,float_status * fp_status)3386 static float64 extract_bf16(bfloat16 in, float_status *fp_status)
3387 {
3388 return bfloat16_to_float64(in, fp_status);
3389 }
3390
vsxger16(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask,bool acc,bool neg_mul,bool neg_acc,extract_f16 extract)3391 static void vsxger16(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3392 ppc_acc_t *at, uint32_t mask, bool acc,
3393 bool neg_mul, bool neg_acc, extract_f16 extract)
3394 {
3395 float32 r, aux_acc;
3396 float64 psum, va, vb, vc, vd;
3397 int i, j, xmsk_bit, ymsk_bit;
3398 uint8_t pmsk = FIELD_EX32(mask, GER_MSK, PMSK),
3399 xmsk = FIELD_EX32(mask, GER_MSK, XMSK),
3400 ymsk = FIELD_EX32(mask, GER_MSK, YMSK);
3401 float_status *excp_ptr = &env->fp_status;
3402 for (i = 0, xmsk_bit = 1 << 3; i < 4; i++, xmsk_bit >>= 1) {
3403 for (j = 0, ymsk_bit = 1 << 3; j < 4; j++, ymsk_bit >>= 1) {
3404 if ((xmsk_bit & xmsk) && (ymsk_bit & ymsk)) {
3405 va = !(pmsk & 2) ? float64_zero :
3406 extract(a->VsrHF(2 * i), excp_ptr);
3407 vb = !(pmsk & 2) ? float64_zero :
3408 extract(b->VsrHF(2 * j), excp_ptr);
3409 vc = !(pmsk & 1) ? float64_zero :
3410 extract(a->VsrHF(2 * i + 1), excp_ptr);
3411 vd = !(pmsk & 1) ? float64_zero :
3412 extract(b->VsrHF(2 * j + 1), excp_ptr);
3413 psum = float64_mul(va, vb, excp_ptr);
3414 psum = float64r32_muladd(vc, vd, psum, 0, excp_ptr);
3415 r = float64_to_float32(psum, excp_ptr);
3416 if (acc) {
3417 aux_acc = at[i].VsrSF(j);
3418 if (neg_mul) {
3419 r = bfp32_neg(r);
3420 }
3421 if (neg_acc) {
3422 aux_acc = bfp32_neg(aux_acc);
3423 }
3424 r = float32_add(r, aux_acc, excp_ptr);
3425 }
3426 at[i].VsrSF(j) = r;
3427 } else {
3428 at[i].VsrSF(j) = float32_zero;
3429 }
3430 }
3431 }
3432 vsxger_excp(env, GETPC());
3433 }
3434
3435 typedef void vsxger_zero(ppc_vsr_t *at, int, int);
3436
3437 typedef void vsxger_muladd_f(ppc_vsr_t *, ppc_vsr_t *, ppc_vsr_t *, int, int,
3438 int flags, float_status *s);
3439
vsxger_muladd32(ppc_vsr_t * at,ppc_vsr_t * a,ppc_vsr_t * b,int i,int j,int flags,float_status * s)3440 static void vsxger_muladd32(ppc_vsr_t *at, ppc_vsr_t *a, ppc_vsr_t *b, int i,
3441 int j, int flags, float_status *s)
3442 {
3443 at[i].VsrSF(j) = float32_muladd(a->VsrSF(i), b->VsrSF(j),
3444 at[i].VsrSF(j), flags, s);
3445 }
3446
vsxger_mul32(ppc_vsr_t * at,ppc_vsr_t * a,ppc_vsr_t * b,int i,int j,int flags,float_status * s)3447 static void vsxger_mul32(ppc_vsr_t *at, ppc_vsr_t *a, ppc_vsr_t *b, int i,
3448 int j, int flags, float_status *s)
3449 {
3450 at[i].VsrSF(j) = float32_mul(a->VsrSF(i), b->VsrSF(j), s);
3451 }
3452
vsxger_zero32(ppc_vsr_t * at,int i,int j)3453 static void vsxger_zero32(ppc_vsr_t *at, int i, int j)
3454 {
3455 at[i].VsrSF(j) = float32_zero;
3456 }
3457
vsxger_muladd64(ppc_vsr_t * at,ppc_vsr_t * a,ppc_vsr_t * b,int i,int j,int flags,float_status * s)3458 static void vsxger_muladd64(ppc_vsr_t *at, ppc_vsr_t *a, ppc_vsr_t *b, int i,
3459 int j, int flags, float_status *s)
3460 {
3461 if (j >= 2) {
3462 j -= 2;
3463 at[i].VsrDF(j) = float64_muladd(a[i / 2].VsrDF(i % 2), b->VsrDF(j),
3464 at[i].VsrDF(j), flags, s);
3465 }
3466 }
3467
vsxger_mul64(ppc_vsr_t * at,ppc_vsr_t * a,ppc_vsr_t * b,int i,int j,int flags,float_status * s)3468 static void vsxger_mul64(ppc_vsr_t *at, ppc_vsr_t *a, ppc_vsr_t *b, int i,
3469 int j, int flags, float_status *s)
3470 {
3471 if (j >= 2) {
3472 j -= 2;
3473 at[i].VsrDF(j) = float64_mul(a[i / 2].VsrDF(i % 2), b->VsrDF(j), s);
3474 }
3475 }
3476
vsxger_zero64(ppc_vsr_t * at,int i,int j)3477 static void vsxger_zero64(ppc_vsr_t *at, int i, int j)
3478 {
3479 if (j >= 2) {
3480 j -= 2;
3481 at[i].VsrDF(j) = float64_zero;
3482 }
3483 }
3484
vsxger(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask,bool acc,bool neg_mul,bool neg_acc,vsxger_muladd_f mul,vsxger_muladd_f muladd,vsxger_zero zero)3485 static void vsxger(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3486 ppc_acc_t *at, uint32_t mask, bool acc, bool neg_mul,
3487 bool neg_acc, vsxger_muladd_f mul, vsxger_muladd_f muladd,
3488 vsxger_zero zero)
3489 {
3490 int i, j, xmsk_bit, ymsk_bit, op_flags;
3491 uint8_t xmsk = mask & 0x0F;
3492 uint8_t ymsk = (mask >> 4) & 0x0F;
3493 float_status *excp_ptr = &env->fp_status;
3494 op_flags = (neg_acc ^ neg_mul) ? float_muladd_negate_c : 0;
3495 op_flags |= (neg_mul) ? float_muladd_negate_result : 0;
3496 helper_reset_fpstatus(env);
3497 for (i = 0, xmsk_bit = 1 << 3; i < 4; i++, xmsk_bit >>= 1) {
3498 for (j = 0, ymsk_bit = 1 << 3; j < 4; j++, ymsk_bit >>= 1) {
3499 if ((xmsk_bit & xmsk) && (ymsk_bit & ymsk)) {
3500 if (acc) {
3501 muladd(at, a, b, i, j, op_flags, excp_ptr);
3502 } else {
3503 mul(at, a, b, i, j, op_flags, excp_ptr);
3504 }
3505 } else {
3506 zero(at, i, j);
3507 }
3508 }
3509 }
3510 vsxger_excp(env, GETPC());
3511 }
3512
3513 QEMU_FLATTEN
helper_XVBF16GER2(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3514 void helper_XVBF16GER2(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3515 ppc_acc_t *at, uint32_t mask)
3516 {
3517 vsxger16(env, a, b, at, mask, false, false, false, extract_bf16);
3518 }
3519
3520 QEMU_FLATTEN
helper_XVBF16GER2PP(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3521 void helper_XVBF16GER2PP(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3522 ppc_acc_t *at, uint32_t mask)
3523 {
3524 vsxger16(env, a, b, at, mask, true, false, false, extract_bf16);
3525 }
3526
3527 QEMU_FLATTEN
helper_XVBF16GER2PN(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3528 void helper_XVBF16GER2PN(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3529 ppc_acc_t *at, uint32_t mask)
3530 {
3531 vsxger16(env, a, b, at, mask, true, false, true, extract_bf16);
3532 }
3533
3534 QEMU_FLATTEN
helper_XVBF16GER2NP(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3535 void helper_XVBF16GER2NP(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3536 ppc_acc_t *at, uint32_t mask)
3537 {
3538 vsxger16(env, a, b, at, mask, true, true, false, extract_bf16);
3539 }
3540
3541 QEMU_FLATTEN
helper_XVBF16GER2NN(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3542 void helper_XVBF16GER2NN(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3543 ppc_acc_t *at, uint32_t mask)
3544 {
3545 vsxger16(env, a, b, at, mask, true, true, true, extract_bf16);
3546 }
3547
3548 QEMU_FLATTEN
helper_XVF16GER2(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3549 void helper_XVF16GER2(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3550 ppc_acc_t *at, uint32_t mask)
3551 {
3552 vsxger16(env, a, b, at, mask, false, false, false, extract_hf16);
3553 }
3554
3555 QEMU_FLATTEN
helper_XVF16GER2PP(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3556 void helper_XVF16GER2PP(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3557 ppc_acc_t *at, uint32_t mask)
3558 {
3559 vsxger16(env, a, b, at, mask, true, false, false, extract_hf16);
3560 }
3561
3562 QEMU_FLATTEN
helper_XVF16GER2PN(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3563 void helper_XVF16GER2PN(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3564 ppc_acc_t *at, uint32_t mask)
3565 {
3566 vsxger16(env, a, b, at, mask, true, false, true, extract_hf16);
3567 }
3568
3569 QEMU_FLATTEN
helper_XVF16GER2NP(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3570 void helper_XVF16GER2NP(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3571 ppc_acc_t *at, uint32_t mask)
3572 {
3573 vsxger16(env, a, b, at, mask, true, true, false, extract_hf16);
3574 }
3575
3576 QEMU_FLATTEN
helper_XVF16GER2NN(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3577 void helper_XVF16GER2NN(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3578 ppc_acc_t *at, uint32_t mask)
3579 {
3580 vsxger16(env, a, b, at, mask, true, true, true, extract_hf16);
3581 }
3582
3583 QEMU_FLATTEN
helper_XVF32GER(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3584 void helper_XVF32GER(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3585 ppc_acc_t *at, uint32_t mask)
3586 {
3587 vsxger(env, a, b, at, mask, false, false, false, vsxger_mul32,
3588 vsxger_muladd32, vsxger_zero32);
3589 }
3590
3591 QEMU_FLATTEN
helper_XVF32GERPP(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3592 void helper_XVF32GERPP(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3593 ppc_acc_t *at, uint32_t mask)
3594 {
3595 vsxger(env, a, b, at, mask, true, false, false, vsxger_mul32,
3596 vsxger_muladd32, vsxger_zero32);
3597 }
3598
3599 QEMU_FLATTEN
helper_XVF32GERPN(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3600 void helper_XVF32GERPN(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3601 ppc_acc_t *at, uint32_t mask)
3602 {
3603 vsxger(env, a, b, at, mask, true, false, true, vsxger_mul32,
3604 vsxger_muladd32, vsxger_zero32);
3605 }
3606
3607 QEMU_FLATTEN
helper_XVF32GERNP(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3608 void helper_XVF32GERNP(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3609 ppc_acc_t *at, uint32_t mask)
3610 {
3611 vsxger(env, a, b, at, mask, true, true, false, vsxger_mul32,
3612 vsxger_muladd32, vsxger_zero32);
3613 }
3614
3615 QEMU_FLATTEN
helper_XVF32GERNN(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3616 void helper_XVF32GERNN(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3617 ppc_acc_t *at, uint32_t mask)
3618 {
3619 vsxger(env, a, b, at, mask, true, true, true, vsxger_mul32,
3620 vsxger_muladd32, vsxger_zero32);
3621 }
3622
3623 QEMU_FLATTEN
helper_XVF64GER(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3624 void helper_XVF64GER(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3625 ppc_acc_t *at, uint32_t mask)
3626 {
3627 vsxger(env, a, b, at, mask, false, false, false, vsxger_mul64,
3628 vsxger_muladd64, vsxger_zero64);
3629 }
3630
3631 QEMU_FLATTEN
helper_XVF64GERPP(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3632 void helper_XVF64GERPP(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3633 ppc_acc_t *at, uint32_t mask)
3634 {
3635 vsxger(env, a, b, at, mask, true, false, false, vsxger_mul64,
3636 vsxger_muladd64, vsxger_zero64);
3637 }
3638
3639 QEMU_FLATTEN
helper_XVF64GERPN(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3640 void helper_XVF64GERPN(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3641 ppc_acc_t *at, uint32_t mask)
3642 {
3643 vsxger(env, a, b, at, mask, true, false, true, vsxger_mul64,
3644 vsxger_muladd64, vsxger_zero64);
3645 }
3646
3647 QEMU_FLATTEN
helper_XVF64GERNP(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3648 void helper_XVF64GERNP(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3649 ppc_acc_t *at, uint32_t mask)
3650 {
3651 vsxger(env, a, b, at, mask, true, true, false, vsxger_mul64,
3652 vsxger_muladd64, vsxger_zero64);
3653 }
3654
3655 QEMU_FLATTEN
helper_XVF64GERNN(CPUPPCState * env,ppc_vsr_t * a,ppc_vsr_t * b,ppc_acc_t * at,uint32_t mask)3656 void helper_XVF64GERNN(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
3657 ppc_acc_t *at, uint32_t mask)
3658 {
3659 vsxger(env, a, b, at, mask, true, true, true, vsxger_mul64,
3660 vsxger_muladd64, vsxger_zero64);
3661 }
3662