2 * S/390 FPU helper routines
4 * Copyright (c) 2009 Ulrich Hecht
5 * Copyright (c) 2009 Alexander Graf
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
24 #if !defined(CONFIG_USER_ONLY)
25 #include "exec/softmmu_exec.h"
28 /* #define DEBUG_HELPER */
30 #define HELPER_LOG(x...) qemu_log(x)
32 #define HELPER_LOG(x...)
35 static inline int float_comp_to_cc(CPUS390XState *env, int float_compare)
37 switch (float_compare) {
38 case float_relation_equal:
40 case float_relation_less:
42 case float_relation_greater:
44 case float_relation_unordered:
47 cpu_abort(env, "unknown return value for float compare\n");
51 /* condition codes for binary FP ops */
52 uint32_t set_cc_f32(CPUS390XState *env, float32 v1, float32 v2)
54 return float_comp_to_cc(env, float32_compare_quiet(v1, v2,
58 uint32_t set_cc_f64(CPUS390XState *env, float64 v1, float64 v2)
60 return float_comp_to_cc(env, float64_compare_quiet(v1, v2,
64 /* condition codes for unary FP ops */
65 uint32_t set_cc_nz_f32(float32 v)
67 if (float32_is_any_nan(v)) {
69 } else if (float32_is_zero(v)) {
71 } else if (float32_is_neg(v)) {
78 uint32_t set_cc_nz_f64(float64 v)
80 if (float64_is_any_nan(v)) {
82 } else if (float64_is_zero(v)) {
84 } else if (float64_is_neg(v)) {
91 static uint32_t set_cc_nz_f128(float128 v)
93 if (float128_is_any_nan(v)) {
95 } else if (float128_is_zero(v)) {
97 } else if (float128_is_neg(v)) {
104 /* convert 32-bit int to 64-bit float */
105 void HELPER(cdfbr)(CPUS390XState *env, uint32_t f1, int32_t v2)
107 HELPER_LOG("%s: converting %d to f%d\n", __func__, v2, f1);
108 env->fregs[f1].d = int32_to_float64(v2, &env->fpu_status);
111 /* convert 32-bit int to 128-bit float */
112 void HELPER(cxfbr)(CPUS390XState *env, uint32_t f1, int32_t v2)
116 v1.q = int32_to_float128(v2, &env->fpu_status);
117 env->fregs[f1].ll = v1.ll.upper;
118 env->fregs[f1 + 2].ll = v1.ll.lower;
121 /* convert 64-bit int to 32-bit float */
122 void HELPER(cegbr)(CPUS390XState *env, uint32_t f1, int64_t v2)
124 HELPER_LOG("%s: converting %ld to f%d\n", __func__, v2, f1);
125 env->fregs[f1].l.upper = int64_to_float32(v2, &env->fpu_status);
128 /* convert 64-bit int to 64-bit float */
129 void HELPER(cdgbr)(CPUS390XState *env, uint32_t f1, int64_t v2)
131 HELPER_LOG("%s: converting %ld to f%d\n", __func__, v2, f1);
132 env->fregs[f1].d = int64_to_float64(v2, &env->fpu_status);
135 /* convert 64-bit int to 128-bit float */
136 void HELPER(cxgbr)(CPUS390XState *env, uint32_t f1, int64_t v2)
140 x1.q = int64_to_float128(v2, &env->fpu_status);
141 HELPER_LOG("%s: converted %ld to 0x%lx and 0x%lx\n", __func__, v2,
142 x1.ll.upper, x1.ll.lower);
143 env->fregs[f1].ll = x1.ll.upper;
144 env->fregs[f1 + 2].ll = x1.ll.lower;
147 /* convert 32-bit int to 32-bit float */
148 void HELPER(cefbr)(CPUS390XState *env, uint32_t f1, int32_t v2)
150 env->fregs[f1].l.upper = int32_to_float32(v2, &env->fpu_status);
151 HELPER_LOG("%s: converting %d to 0x%d in f%d\n", __func__, v2,
152 env->fregs[f1].l.upper, f1);
155 /* 32-bit FP addition RR */
156 uint32_t HELPER(aebr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
158 env->fregs[f1].l.upper = float32_add(env->fregs[f1].l.upper,
159 env->fregs[f2].l.upper,
161 HELPER_LOG("%s: adding 0x%d resulting in 0x%d in f%d\n", __func__,
162 env->fregs[f2].l.upper, env->fregs[f1].l.upper, f1);
164 return set_cc_nz_f32(env->fregs[f1].l.upper);
167 /* 64-bit FP addition RR */
168 uint32_t HELPER(adbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
170 env->fregs[f1].d = float64_add(env->fregs[f1].d, env->fregs[f2].d,
172 HELPER_LOG("%s: adding 0x%ld resulting in 0x%ld in f%d\n", __func__,
173 env->fregs[f2].d, env->fregs[f1].d, f1);
175 return set_cc_nz_f64(env->fregs[f1].d);
178 /* 32-bit FP subtraction RR */
179 uint32_t HELPER(sebr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
181 env->fregs[f1].l.upper = float32_sub(env->fregs[f1].l.upper,
182 env->fregs[f2].l.upper,
184 HELPER_LOG("%s: adding 0x%d resulting in 0x%d in f%d\n", __func__,
185 env->fregs[f2].l.upper, env->fregs[f1].l.upper, f1);
187 return set_cc_nz_f32(env->fregs[f1].l.upper);
190 /* 64-bit FP subtraction RR */
191 uint32_t HELPER(sdbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
193 env->fregs[f1].d = float64_sub(env->fregs[f1].d, env->fregs[f2].d,
195 HELPER_LOG("%s: subtracting 0x%ld resulting in 0x%ld in f%d\n",
196 __func__, env->fregs[f2].d, env->fregs[f1].d, f1);
198 return set_cc_nz_f64(env->fregs[f1].d);
201 /* 32-bit FP division RR */
202 void HELPER(debr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
204 env->fregs[f1].l.upper = float32_div(env->fregs[f1].l.upper,
205 env->fregs[f2].l.upper,
209 /* 128-bit FP division RR */
210 void HELPER(dxbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
216 v1.ll.upper = env->fregs[f1].ll;
217 v1.ll.lower = env->fregs[f1 + 2].ll;
218 v2.ll.upper = env->fregs[f2].ll;
219 v2.ll.lower = env->fregs[f2 + 2].ll;
220 res.q = float128_div(v1.q, v2.q, &env->fpu_status);
221 env->fregs[f1].ll = res.ll.upper;
222 env->fregs[f1 + 2].ll = res.ll.lower;
225 /* 64-bit FP multiplication RR */
226 void HELPER(mdbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
228 env->fregs[f1].d = float64_mul(env->fregs[f1].d, env->fregs[f2].d,
232 /* 128-bit FP multiplication RR */
233 void HELPER(mxbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
239 v1.ll.upper = env->fregs[f1].ll;
240 v1.ll.lower = env->fregs[f1 + 2].ll;
241 v2.ll.upper = env->fregs[f2].ll;
242 v2.ll.lower = env->fregs[f2 + 2].ll;
243 res.q = float128_mul(v1.q, v2.q, &env->fpu_status);
244 env->fregs[f1].ll = res.ll.upper;
245 env->fregs[f1 + 2].ll = res.ll.lower;
248 /* convert 32-bit float to 64-bit float */
249 void HELPER(ldebr)(CPUS390XState *env, uint32_t r1, uint32_t r2)
251 env->fregs[r1].d = float32_to_float64(env->fregs[r2].l.upper,
255 /* convert 128-bit float to 64-bit float */
256 void HELPER(ldxbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
260 x2.ll.upper = env->fregs[f2].ll;
261 x2.ll.lower = env->fregs[f2 + 2].ll;
262 env->fregs[f1].d = float128_to_float64(x2.q, &env->fpu_status);
263 HELPER_LOG("%s: to 0x%ld\n", __func__, env->fregs[f1].d);
266 /* convert 64-bit float to 128-bit float */
267 void HELPER(lxdbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
271 res.q = float64_to_float128(env->fregs[f2].d, &env->fpu_status);
272 env->fregs[f1].ll = res.ll.upper;
273 env->fregs[f1 + 2].ll = res.ll.lower;
276 /* convert 64-bit float to 32-bit float */
277 void HELPER(ledbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
279 float64 d2 = env->fregs[f2].d;
281 env->fregs[f1].l.upper = float64_to_float32(d2, &env->fpu_status);
284 /* convert 128-bit float to 32-bit float */
285 void HELPER(lexbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
289 x2.ll.upper = env->fregs[f2].ll;
290 x2.ll.lower = env->fregs[f2 + 2].ll;
291 env->fregs[f1].l.upper = float128_to_float32(x2.q, &env->fpu_status);
292 HELPER_LOG("%s: to 0x%d\n", __func__, env->fregs[f1].l.upper);
295 /* absolute value of 32-bit float */
296 uint32_t HELPER(lpebr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
299 float32 v2 = env->fregs[f2].d;
301 v1 = float32_abs(v2);
302 env->fregs[f1].d = v1;
303 return set_cc_nz_f32(v1);
306 /* absolute value of 64-bit float */
307 uint32_t HELPER(lpdbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
310 float64 v2 = env->fregs[f2].d;
312 v1 = float64_abs(v2);
313 env->fregs[f1].d = v1;
314 return set_cc_nz_f64(v1);
317 /* absolute value of 128-bit float */
318 uint32_t HELPER(lpxbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
323 v2.ll.upper = env->fregs[f2].ll;
324 v2.ll.lower = env->fregs[f2 + 2].ll;
325 v1.q = float128_abs(v2.q);
326 env->fregs[f1].ll = v1.ll.upper;
327 env->fregs[f1 + 2].ll = v1.ll.lower;
328 return set_cc_nz_f128(v1.q);
331 /* load and test 64-bit float */
332 uint32_t HELPER(ltdbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
334 env->fregs[f1].d = env->fregs[f2].d;
335 return set_cc_nz_f64(env->fregs[f1].d);
338 /* load and test 32-bit float */
339 uint32_t HELPER(ltebr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
341 env->fregs[f1].l.upper = env->fregs[f2].l.upper;
342 return set_cc_nz_f32(env->fregs[f1].l.upper);
345 /* load and test 128-bit float */
346 uint32_t HELPER(ltxbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
350 x.ll.upper = env->fregs[f2].ll;
351 x.ll.lower = env->fregs[f2 + 2].ll;
352 env->fregs[f1].ll = x.ll.upper;
353 env->fregs[f1 + 2].ll = x.ll.lower;
354 return set_cc_nz_f128(x.q);
357 /* load complement of 32-bit float */
358 uint32_t HELPER(lcebr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
360 env->fregs[f1].l.upper = float32_chs(env->fregs[f2].l.upper);
362 return set_cc_nz_f32(env->fregs[f1].l.upper);
365 /* load complement of 64-bit float */
366 uint32_t HELPER(lcdbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
368 env->fregs[f1].d = float64_chs(env->fregs[f2].d);
370 return set_cc_nz_f64(env->fregs[f1].d);
373 /* load complement of 128-bit float */
374 uint32_t HELPER(lcxbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
378 x2.ll.upper = env->fregs[f2].ll;
379 x2.ll.lower = env->fregs[f2 + 2].ll;
380 x1.q = float128_chs(x2.q);
381 env->fregs[f1].ll = x1.ll.upper;
382 env->fregs[f1 + 2].ll = x1.ll.lower;
383 return set_cc_nz_f128(x1.q);
386 /* 32-bit FP addition RM */
387 void HELPER(aeb)(CPUS390XState *env, uint32_t f1, uint32_t val)
389 float32 v1 = env->fregs[f1].l.upper;
393 HELPER_LOG("%s: adding 0x%d from f%d and 0x%d\n", __func__,
395 env->fregs[f1].l.upper = float32_add(v1, v2.f, &env->fpu_status);
398 /* 32-bit FP division RM */
399 void HELPER(deb)(CPUS390XState *env, uint32_t f1, uint32_t val)
401 float32 v1 = env->fregs[f1].l.upper;
405 HELPER_LOG("%s: dividing 0x%d from f%d by 0x%d\n", __func__,
407 env->fregs[f1].l.upper = float32_div(v1, v2.f, &env->fpu_status);
410 /* 32-bit FP multiplication RM */
411 void HELPER(meeb)(CPUS390XState *env, uint32_t f1, uint32_t val)
413 float32 v1 = env->fregs[f1].l.upper;
417 HELPER_LOG("%s: multiplying 0x%d from f%d and 0x%d\n", __func__,
419 env->fregs[f1].l.upper = float32_mul(v1, v2.f, &env->fpu_status);
422 /* 32-bit FP compare RR */
423 uint32_t HELPER(cebr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
425 float32 v1 = env->fregs[f1].l.upper;
426 float32 v2 = env->fregs[f2].l.upper;
428 HELPER_LOG("%s: comparing 0x%d from f%d and 0x%d\n", __func__,
430 return set_cc_f32(env, v1, v2);
433 /* 64-bit FP compare RR */
434 uint32_t HELPER(cdbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
436 float64 v1 = env->fregs[f1].d;
437 float64 v2 = env->fregs[f2].d;
439 HELPER_LOG("%s: comparing 0x%ld from f%d and 0x%ld\n", __func__,
441 return set_cc_f64(env, v1, v2);
444 /* 128-bit FP compare RR */
445 uint32_t HELPER(cxbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
450 v1.ll.upper = env->fregs[f1].ll;
451 v1.ll.lower = env->fregs[f1 + 2].ll;
452 v2.ll.upper = env->fregs[f2].ll;
453 v2.ll.lower = env->fregs[f2 + 2].ll;
455 return float_comp_to_cc(env, float128_compare_quiet(v1.q, v2.q,
459 /* 64-bit FP compare RM */
460 uint32_t HELPER(cdb)(CPUS390XState *env, uint32_t f1, uint64_t a2)
462 float64 v1 = env->fregs[f1].d;
465 v2.ll = cpu_ldq_data(env, a2);
466 HELPER_LOG("%s: comparing 0x%ld from f%d and 0x%lx\n", __func__, v1,
468 return set_cc_f64(env, v1, v2.d);
471 /* 64-bit FP addition RM */
472 uint32_t HELPER(adb)(CPUS390XState *env, uint32_t f1, uint64_t a2)
474 float64 v1 = env->fregs[f1].d;
477 v2.ll = cpu_ldq_data(env, a2);
478 HELPER_LOG("%s: adding 0x%lx from f%d and 0x%lx\n", __func__,
480 env->fregs[f1].d = v1 = float64_add(v1, v2.d, &env->fpu_status);
481 return set_cc_nz_f64(v1);
484 /* 32-bit FP subtraction RM */
485 void HELPER(seb)(CPUS390XState *env, uint32_t f1, uint32_t val)
487 float32 v1 = env->fregs[f1].l.upper;
491 env->fregs[f1].l.upper = float32_sub(v1, v2.f, &env->fpu_status);
494 /* 64-bit FP subtraction RM */
495 uint32_t HELPER(sdb)(CPUS390XState *env, uint32_t f1, uint64_t a2)
497 float64 v1 = env->fregs[f1].d;
500 v2.ll = cpu_ldq_data(env, a2);
501 env->fregs[f1].d = v1 = float64_sub(v1, v2.d, &env->fpu_status);
502 return set_cc_nz_f64(v1);
505 /* 64-bit FP multiplication RM */
506 void HELPER(mdb)(CPUS390XState *env, uint32_t f1, uint64_t a2)
508 float64 v1 = env->fregs[f1].d;
511 v2.ll = cpu_ldq_data(env, a2);
512 HELPER_LOG("%s: multiplying 0x%lx from f%d and 0x%ld\n", __func__,
514 env->fregs[f1].d = float64_mul(v1, v2.d, &env->fpu_status);
517 /* 64-bit FP division RM */
518 void HELPER(ddb)(CPUS390XState *env, uint32_t f1, uint64_t a2)
520 float64 v1 = env->fregs[f1].d;
523 v2.ll = cpu_ldq_data(env, a2);
524 HELPER_LOG("%s: dividing 0x%lx from f%d by 0x%ld\n", __func__,
526 env->fregs[f1].d = float64_div(v1, v2.d, &env->fpu_status);
529 static void set_round_mode(CPUS390XState *env, int m3)
536 /* biased round no nearest */
538 /* round to nearest */
539 set_float_rounding_mode(float_round_nearest_even, &env->fpu_status);
543 set_float_rounding_mode(float_round_to_zero, &env->fpu_status);
547 set_float_rounding_mode(float_round_up, &env->fpu_status);
551 set_float_rounding_mode(float_round_down, &env->fpu_status);
556 /* convert 32-bit float to 64-bit int */
557 uint32_t HELPER(cgebr)(CPUS390XState *env, uint32_t r1, uint32_t f2,
560 float32 v2 = env->fregs[f2].l.upper;
562 set_round_mode(env, m3);
563 env->regs[r1] = float32_to_int64(v2, &env->fpu_status);
564 return set_cc_nz_f32(v2);
567 /* convert 64-bit float to 64-bit int */
568 uint32_t HELPER(cgdbr)(CPUS390XState *env, uint32_t r1, uint32_t f2,
571 float64 v2 = env->fregs[f2].d;
573 set_round_mode(env, m3);
574 env->regs[r1] = float64_to_int64(v2, &env->fpu_status);
575 return set_cc_nz_f64(v2);
578 /* convert 128-bit float to 64-bit int */
579 uint32_t HELPER(cgxbr)(CPUS390XState *env, uint32_t r1, uint32_t f2,
584 v2.ll.upper = env->fregs[f2].ll;
585 v2.ll.lower = env->fregs[f2 + 2].ll;
586 set_round_mode(env, m3);
587 env->regs[r1] = float128_to_int64(v2.q, &env->fpu_status);
588 if (float128_is_any_nan(v2.q)) {
590 } else if (float128_is_zero(v2.q)) {
592 } else if (float128_is_neg(v2.q)) {
599 /* convert 32-bit float to 32-bit int */
600 uint32_t HELPER(cfebr)(CPUS390XState *env, uint32_t r1, uint32_t f2,
603 float32 v2 = env->fregs[f2].l.upper;
605 set_round_mode(env, m3);
606 env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) |
607 float32_to_int32(v2, &env->fpu_status);
608 return set_cc_nz_f32(v2);
611 /* convert 64-bit float to 32-bit int */
612 uint32_t HELPER(cfdbr)(CPUS390XState *env, uint32_t r1, uint32_t f2,
615 float64 v2 = env->fregs[f2].d;
617 set_round_mode(env, m3);
618 env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) |
619 float64_to_int32(v2, &env->fpu_status);
620 return set_cc_nz_f64(v2);
623 /* convert 128-bit float to 32-bit int */
624 uint32_t HELPER(cfxbr)(CPUS390XState *env, uint32_t r1, uint32_t f2,
629 v2.ll.upper = env->fregs[f2].ll;
630 v2.ll.lower = env->fregs[f2 + 2].ll;
631 env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) |
632 float128_to_int32(v2.q, &env->fpu_status);
633 return set_cc_nz_f128(v2.q);
636 /* load 32-bit FP zero */
637 void HELPER(lzer)(CPUS390XState *env, uint32_t f1)
639 env->fregs[f1].l.upper = float32_zero;
642 /* load 64-bit FP zero */
643 void HELPER(lzdr)(CPUS390XState *env, uint32_t f1)
645 env->fregs[f1].d = float64_zero;
648 /* load 128-bit FP zero */
649 void HELPER(lzxr)(CPUS390XState *env, uint32_t f1)
653 x.q = float64_to_float128(float64_zero, &env->fpu_status);
654 env->fregs[f1].ll = x.ll.upper;
655 env->fregs[f1 + 1].ll = x.ll.lower;
658 /* 128-bit FP subtraction RR */
659 uint32_t HELPER(sxbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
665 v1.ll.upper = env->fregs[f1].ll;
666 v1.ll.lower = env->fregs[f1 + 2].ll;
667 v2.ll.upper = env->fregs[f2].ll;
668 v2.ll.lower = env->fregs[f2 + 2].ll;
669 res.q = float128_sub(v1.q, v2.q, &env->fpu_status);
670 env->fregs[f1].ll = res.ll.upper;
671 env->fregs[f1 + 2].ll = res.ll.lower;
672 return set_cc_nz_f128(res.q);
675 /* 128-bit FP addition RR */
676 uint32_t HELPER(axbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
682 v1.ll.upper = env->fregs[f1].ll;
683 v1.ll.lower = env->fregs[f1 + 2].ll;
684 v2.ll.upper = env->fregs[f2].ll;
685 v2.ll.lower = env->fregs[f2 + 2].ll;
686 res.q = float128_add(v1.q, v2.q, &env->fpu_status);
687 env->fregs[f1].ll = res.ll.upper;
688 env->fregs[f1 + 2].ll = res.ll.lower;
689 return set_cc_nz_f128(res.q);
692 /* 32-bit FP multiplication RR */
693 void HELPER(meebr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
695 env->fregs[f1].l.upper = float32_mul(env->fregs[f1].l.upper,
696 env->fregs[f2].l.upper,
700 /* 64-bit FP division RR */
701 void HELPER(ddbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
703 env->fregs[f1].d = float64_div(env->fregs[f1].d, env->fregs[f2].d,
707 /* 64-bit FP multiply and add RM */
708 void HELPER(madb)(CPUS390XState *env, uint32_t f1, uint64_t a2, uint32_t f3)
712 HELPER_LOG("%s: f1 %d a2 0x%lx f3 %d\n", __func__, f1, a2, f3);
713 v2.ll = cpu_ldq_data(env, a2);
714 env->fregs[f1].d = float64_add(env->fregs[f1].d,
715 float64_mul(v2.d, env->fregs[f3].d,
720 /* 64-bit FP multiply and add RR */
721 void HELPER(madbr)(CPUS390XState *env, uint32_t f1, uint32_t f3, uint32_t f2)
723 HELPER_LOG("%s: f1 %d f2 %d f3 %d\n", __func__, f1, f2, f3);
724 env->fregs[f1].d = float64_add(float64_mul(env->fregs[f2].d,
727 env->fregs[f1].d, &env->fpu_status);
730 /* 64-bit FP multiply and subtract RR */
731 void HELPER(msdbr)(CPUS390XState *env, uint32_t f1, uint32_t f3, uint32_t f2)
733 HELPER_LOG("%s: f1 %d f2 %d f3 %d\n", __func__, f1, f2, f3);
734 env->fregs[f1].d = float64_sub(float64_mul(env->fregs[f2].d,
737 env->fregs[f1].d, &env->fpu_status);
740 /* 32-bit FP multiply and add RR */
741 void HELPER(maebr)(CPUS390XState *env, uint32_t f1, uint32_t f3, uint32_t f2)
743 env->fregs[f1].l.upper = float32_add(env->fregs[f1].l.upper,
744 float32_mul(env->fregs[f2].l.upper,
745 env->fregs[f3].l.upper,
750 /* convert 32-bit float to 64-bit float */
751 void HELPER(ldeb)(CPUS390XState *env, uint32_t f1, uint64_t a2)
755 v2 = cpu_ldl_data(env, a2);
756 env->fregs[f1].d = float32_to_float64(v2,
760 /* convert 64-bit float to 128-bit float */
761 void HELPER(lxdb)(CPUS390XState *env, uint32_t f1, uint64_t a2)
766 v2.ll = cpu_ldq_data(env, a2);
767 v1.q = float64_to_float128(v2.d, &env->fpu_status);
768 env->fregs[f1].ll = v1.ll.upper;
769 env->fregs[f1 + 2].ll = v1.ll.lower;
772 /* test data class 32-bit */
773 uint32_t HELPER(tceb)(CPUS390XState *env, uint32_t f1, uint64_t m2)
775 float32 v1 = env->fregs[f1].l.upper;
776 int neg = float32_is_neg(v1);
779 HELPER_LOG("%s: v1 0x%lx m2 0x%lx neg %d\n", __func__, (long)v1, m2, neg);
780 if ((float32_is_zero(v1) && (m2 & (1 << (11-neg)))) ||
781 (float32_is_infinity(v1) && (m2 & (1 << (5-neg)))) ||
782 (float32_is_any_nan(v1) && (m2 & (1 << (3-neg)))) ||
783 (float32_is_signaling_nan(v1) && (m2 & (1 << (1-neg))))) {
785 } else if (m2 & (1 << (9-neg))) {
786 /* assume normalized number */
790 /* FIXME: denormalized? */
794 /* test data class 64-bit */
795 uint32_t HELPER(tcdb)(CPUS390XState *env, uint32_t f1, uint64_t m2)
797 float64 v1 = env->fregs[f1].d;
798 int neg = float64_is_neg(v1);
801 HELPER_LOG("%s: v1 0x%lx m2 0x%lx neg %d\n", __func__, v1, m2, neg);
802 if ((float64_is_zero(v1) && (m2 & (1 << (11-neg)))) ||
803 (float64_is_infinity(v1) && (m2 & (1 << (5-neg)))) ||
804 (float64_is_any_nan(v1) && (m2 & (1 << (3-neg)))) ||
805 (float64_is_signaling_nan(v1) && (m2 & (1 << (1-neg))))) {
807 } else if (m2 & (1 << (9-neg))) {
808 /* assume normalized number */
811 /* FIXME: denormalized? */
815 /* test data class 128-bit */
816 uint32_t HELPER(tcxb)(CPUS390XState *env, uint32_t f1, uint64_t m2)
822 v1.ll.upper = env->fregs[f1].ll;
823 v1.ll.lower = env->fregs[f1 + 2].ll;
825 neg = float128_is_neg(v1.q);
826 if ((float128_is_zero(v1.q) && (m2 & (1 << (11-neg)))) ||
827 (float128_is_infinity(v1.q) && (m2 & (1 << (5-neg)))) ||
828 (float128_is_any_nan(v1.q) && (m2 & (1 << (3-neg)))) ||
829 (float128_is_signaling_nan(v1.q) && (m2 & (1 << (1-neg))))) {
831 } else if (m2 & (1 << (9-neg))) {
832 /* assume normalized number */
835 /* FIXME: denormalized? */
839 /* square root 64-bit RR */
840 void HELPER(sqdbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
842 env->fregs[f1].d = float64_sqrt(env->fregs[f2].d, &env->fpu_status);