xref: /openbmc/qemu/target/m68k/fpu_helper.c (revision 96746f7a) 
1 /*
2  *  m68k FPU helpers
3  *
4  *  Copyright (c) 2006-2007 CodeSourcery
5  *  Written by Paul Brook
6  *
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 2.1 of the License, or (at your option) any later version.
11  *
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.
16  *
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/>.
19  */
20 
21 #include "qemu/osdep.h"
22 #include "cpu.h"
23 #include "exec/helper-proto.h"
24 #include "exec/exec-all.h"
25 #include "exec/cpu_ldst.h"
26 #include "softfloat.h"
27 
28 /*
29  * Undefined offsets may be different on various FPU.
30  * On 68040 they return 0.0 (floatx80_zero)
31  */
32 
33 static const floatx80 fpu_rom[128] = {
34     [0x00] = make_floatx80_init(0x4000, 0xc90fdaa22168c235ULL),  /* Pi       */
35     [0x0b] = make_floatx80_init(0x3ffd, 0x9a209a84fbcff798ULL),  /* Log10(2) */
36     [0x0c] = make_floatx80_init(0x4000, 0xadf85458a2bb4a9aULL),  /* e        */
37     [0x0d] = make_floatx80_init(0x3fff, 0xb8aa3b295c17f0bcULL),  /* Log2(e)  */
38     [0x0e] = make_floatx80_init(0x3ffd, 0xde5bd8a937287195ULL),  /* Log10(e) */
39     [0x0f] = make_floatx80_init(0x0000, 0x0000000000000000ULL),  /* Zero     */
40     [0x30] = make_floatx80_init(0x3ffe, 0xb17217f7d1cf79acULL),  /* ln(2)    */
41     [0x31] = make_floatx80_init(0x4000, 0x935d8dddaaa8ac17ULL),  /* ln(10)   */
42     [0x32] = make_floatx80_init(0x3fff, 0x8000000000000000ULL),  /* 10^0     */
43     [0x33] = make_floatx80_init(0x4002, 0xa000000000000000ULL),  /* 10^1     */
44     [0x34] = make_floatx80_init(0x4005, 0xc800000000000000ULL),  /* 10^2     */
45     [0x35] = make_floatx80_init(0x400c, 0x9c40000000000000ULL),  /* 10^4     */
46     [0x36] = make_floatx80_init(0x4019, 0xbebc200000000000ULL),  /* 10^8     */
47     [0x37] = make_floatx80_init(0x4034, 0x8e1bc9bf04000000ULL),  /* 10^16    */
48     [0x38] = make_floatx80_init(0x4069, 0x9dc5ada82b70b59eULL),  /* 10^32    */
49     [0x39] = make_floatx80_init(0x40d3, 0xc2781f49ffcfa6d5ULL),  /* 10^64    */
50     [0x3a] = make_floatx80_init(0x41a8, 0x93ba47c980e98ce0ULL),  /* 10^128   */
51     [0x3b] = make_floatx80_init(0x4351, 0xaa7eebfb9df9de8eULL),  /* 10^256   */
52     [0x3c] = make_floatx80_init(0x46a3, 0xe319a0aea60e91c7ULL),  /* 10^512   */
53     [0x3d] = make_floatx80_init(0x4d48, 0xc976758681750c17ULL),  /* 10^1024  */
54     [0x3e] = make_floatx80_init(0x5a92, 0x9e8b3b5dc53d5de5ULL),  /* 10^2048  */
55     [0x3f] = make_floatx80_init(0x7525, 0xc46052028a20979bULL),  /* 10^4096  */
56 };
57 
58 int32_t HELPER(reds32)(CPUM68KState *env, FPReg *val)
59 {
60     return floatx80_to_int32(val->d, &env->fp_status);
61 }
62 
63 float32 HELPER(redf32)(CPUM68KState *env, FPReg *val)
64 {
65     return floatx80_to_float32(val->d, &env->fp_status);
66 }
67 
68 void HELPER(exts32)(CPUM68KState *env, FPReg *res, int32_t val)
69 {
70     res->d = int32_to_floatx80(val, &env->fp_status);
71 }
72 
73 void HELPER(extf32)(CPUM68KState *env, FPReg *res, float32 val)
74 {
75     res->d = float32_to_floatx80(val, &env->fp_status);
76 }
77 
78 void HELPER(extf64)(CPUM68KState *env, FPReg *res, float64 val)
79 {
80     res->d = float64_to_floatx80(val, &env->fp_status);
81 }
82 
83 float64 HELPER(redf64)(CPUM68KState *env, FPReg *val)
84 {
85     return floatx80_to_float64(val->d, &env->fp_status);
86 }
87 
88 void HELPER(firound)(CPUM68KState *env, FPReg *res, FPReg *val)
89 {
90     res->d = floatx80_round_to_int(val->d, &env->fp_status);
91 }
92 
93 static void m68k_restore_precision_mode(CPUM68KState *env)
94 {
95     switch (env->fpcr & FPCR_PREC_MASK) {
96     case FPCR_PREC_X: /* extended */
97         set_floatx80_rounding_precision(floatx80_precision_x, &env->fp_status);
98         break;
99     case FPCR_PREC_S: /* single */
100         set_floatx80_rounding_precision(floatx80_precision_s, &env->fp_status);
101         break;
102     case FPCR_PREC_D: /* double */
103         set_floatx80_rounding_precision(floatx80_precision_d, &env->fp_status);
104         break;
105     case FPCR_PREC_U: /* undefined */
106     default:
107         break;
108     }
109 }
110 
111 static void cf_restore_precision_mode(CPUM68KState *env)
112 {
113     if (env->fpcr & FPCR_PREC_S) { /* single */
114         set_floatx80_rounding_precision(floatx80_precision_s, &env->fp_status);
115     } else { /* double */
116         set_floatx80_rounding_precision(floatx80_precision_d, &env->fp_status);
117     }
118 }
119 
120 static void restore_rounding_mode(CPUM68KState *env)
121 {
122     switch (env->fpcr & FPCR_RND_MASK) {
123     case FPCR_RND_N: /* round to nearest */
124         set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
125         break;
126     case FPCR_RND_Z: /* round to zero */
127         set_float_rounding_mode(float_round_to_zero, &env->fp_status);
128         break;
129     case FPCR_RND_M: /* round toward minus infinity */
130         set_float_rounding_mode(float_round_down, &env->fp_status);
131         break;
132     case FPCR_RND_P: /* round toward positive infinity */
133         set_float_rounding_mode(float_round_up, &env->fp_status);
134         break;
135     }
136 }
137 
138 void cpu_m68k_restore_fp_status(CPUM68KState *env)
139 {
140     if (m68k_feature(env, M68K_FEATURE_CF_FPU)) {
141         cf_restore_precision_mode(env);
142     } else {
143         m68k_restore_precision_mode(env);
144     }
145     restore_rounding_mode(env);
146 }
147 
148 void cpu_m68k_set_fpcr(CPUM68KState *env, uint32_t val)
149 {
150     env->fpcr = val & 0xffff;
151     cpu_m68k_restore_fp_status(env);
152 }
153 
154 void HELPER(fitrunc)(CPUM68KState *env, FPReg *res, FPReg *val)
155 {
156     FloatRoundMode rounding_mode = get_float_rounding_mode(&env->fp_status);
157     set_float_rounding_mode(float_round_to_zero, &env->fp_status);
158     res->d = floatx80_round_to_int(val->d, &env->fp_status);
159     set_float_rounding_mode(rounding_mode, &env->fp_status);
160 }
161 
162 void HELPER(set_fpcr)(CPUM68KState *env, uint32_t val)
163 {
164     cpu_m68k_set_fpcr(env, val);
165 }
166 
167 /* Convert host exception flags to cpu_m68k form.  */
168 static int cpu_m68k_exceptbits_from_host(int host_bits)
169 {
170     int target_bits = 0;
171 
172     if (host_bits & float_flag_invalid) {
173         target_bits |= 0x80;
174     }
175     if (host_bits & float_flag_overflow) {
176         target_bits |= 0x40;
177     }
178     if (host_bits & (float_flag_underflow | float_flag_output_denormal)) {
179         target_bits |= 0x20;
180     }
181     if (host_bits & float_flag_divbyzero) {
182         target_bits |= 0x10;
183     }
184     if (host_bits & float_flag_inexact) {
185         target_bits |= 0x08;
186     }
187     return target_bits;
188 }
189 
190 /* Convert cpu_m68k exception flags to target form.  */
191 static int cpu_m68k_exceptbits_to_host(int target_bits)
192 {
193     int host_bits = 0;
194 
195     if (target_bits & 0x80) {
196         host_bits |= float_flag_invalid;
197     }
198     if (target_bits & 0x40) {
199         host_bits |= float_flag_overflow;
200     }
201     if (target_bits & 0x20) {
202         host_bits |= float_flag_underflow;
203     }
204     if (target_bits & 0x10) {
205         host_bits |= float_flag_divbyzero;
206     }
207     if (target_bits & 0x08) {
208         host_bits |= float_flag_inexact;
209     }
210     return host_bits;
211 }
212 
213 uint32_t cpu_m68k_get_fpsr(CPUM68KState *env)
214 {
215     int host_flags = get_float_exception_flags(&env->fp_status);
216     int target_flags = cpu_m68k_exceptbits_from_host(host_flags);
217     int except = (env->fpsr & ~(0xf8)) | target_flags;
218     return except;
219 }
220 
221 uint32_t HELPER(get_fpsr)(CPUM68KState *env)
222 {
223     return cpu_m68k_get_fpsr(env);
224 }
225 
226 void cpu_m68k_set_fpsr(CPUM68KState *env, uint32_t val)
227 {
228     env->fpsr = val;
229 
230     int host_flags = cpu_m68k_exceptbits_to_host((int) env->fpsr);
231     set_float_exception_flags(host_flags, &env->fp_status);
232 }
233 
234 void HELPER(set_fpsr)(CPUM68KState *env, uint32_t val)
235 {
236     cpu_m68k_set_fpsr(env, val);
237 }
238 
239 #define PREC_BEGIN(prec)                                        \
240     do {                                                        \
241         FloatX80RoundPrec old =                                 \
242             get_floatx80_rounding_precision(&env->fp_status);   \
243         set_floatx80_rounding_precision(prec, &env->fp_status)  \
244 
245 #define PREC_END()                                              \
246         set_floatx80_rounding_precision(old, &env->fp_status);  \
247     } while (0)
248 
249 void HELPER(fsround)(CPUM68KState *env, FPReg *res, FPReg *val)
250 {
251     PREC_BEGIN(floatx80_precision_s);
252     res->d = floatx80_round(val->d, &env->fp_status);
253     PREC_END();
254 }
255 
256 void HELPER(fdround)(CPUM68KState *env, FPReg *res, FPReg *val)
257 {
258     PREC_BEGIN(floatx80_precision_d);
259     res->d = floatx80_round(val->d, &env->fp_status);
260     PREC_END();
261 }
262 
263 void HELPER(fsqrt)(CPUM68KState *env, FPReg *res, FPReg *val)
264 {
265     res->d = floatx80_sqrt(val->d, &env->fp_status);
266 }
267 
268 void HELPER(fssqrt)(CPUM68KState *env, FPReg *res, FPReg *val)
269 {
270     PREC_BEGIN(floatx80_precision_s);
271     res->d = floatx80_sqrt(val->d, &env->fp_status);
272     PREC_END();
273 }
274 
275 void HELPER(fdsqrt)(CPUM68KState *env, FPReg *res, FPReg *val)
276 {
277     PREC_BEGIN(floatx80_precision_d);
278     res->d = floatx80_sqrt(val->d, &env->fp_status);
279     PREC_END();
280 }
281 
282 void HELPER(fabs)(CPUM68KState *env, FPReg *res, FPReg *val)
283 {
284     res->d = floatx80_round(floatx80_abs(val->d), &env->fp_status);
285 }
286 
287 void HELPER(fsabs)(CPUM68KState *env, FPReg *res, FPReg *val)
288 {
289     PREC_BEGIN(floatx80_precision_s);
290     res->d = floatx80_round(floatx80_abs(val->d), &env->fp_status);
291     PREC_END();
292 }
293 
294 void HELPER(fdabs)(CPUM68KState *env, FPReg *res, FPReg *val)
295 {
296     PREC_BEGIN(floatx80_precision_d);
297     res->d = floatx80_round(floatx80_abs(val->d), &env->fp_status);
298     PREC_END();
299 }
300 
301 void HELPER(fneg)(CPUM68KState *env, FPReg *res, FPReg *val)
302 {
303     res->d = floatx80_round(floatx80_chs(val->d), &env->fp_status);
304 }
305 
306 void HELPER(fsneg)(CPUM68KState *env, FPReg *res, FPReg *val)
307 {
308     PREC_BEGIN(floatx80_precision_s);
309     res->d = floatx80_round(floatx80_chs(val->d), &env->fp_status);
310     PREC_END();
311 }
312 
313 void HELPER(fdneg)(CPUM68KState *env, FPReg *res, FPReg *val)
314 {
315     PREC_BEGIN(floatx80_precision_d);
316     res->d = floatx80_round(floatx80_chs(val->d), &env->fp_status);
317     PREC_END();
318 }
319 
320 void HELPER(fadd)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
321 {
322     res->d = floatx80_add(val0->d, val1->d, &env->fp_status);
323 }
324 
325 void HELPER(fsadd)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
326 {
327     PREC_BEGIN(floatx80_precision_s);
328     res->d = floatx80_add(val0->d, val1->d, &env->fp_status);
329     PREC_END();
330 }
331 
332 void HELPER(fdadd)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
333 {
334     PREC_BEGIN(floatx80_precision_d);
335     res->d = floatx80_add(val0->d, val1->d, &env->fp_status);
336     PREC_END();
337 }
338 
339 void HELPER(fsub)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
340 {
341     res->d = floatx80_sub(val1->d, val0->d, &env->fp_status);
342 }
343 
344 void HELPER(fssub)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
345 {
346     PREC_BEGIN(floatx80_precision_s);
347     res->d = floatx80_sub(val1->d, val0->d, &env->fp_status);
348     PREC_END();
349 }
350 
351 void HELPER(fdsub)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
352 {
353     PREC_BEGIN(floatx80_precision_d);
354     res->d = floatx80_sub(val1->d, val0->d, &env->fp_status);
355     PREC_END();
356 }
357 
358 void HELPER(fmul)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
359 {
360     res->d = floatx80_mul(val0->d, val1->d, &env->fp_status);
361 }
362 
363 void HELPER(fsmul)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
364 {
365     PREC_BEGIN(floatx80_precision_s);
366     res->d = floatx80_mul(val0->d, val1->d, &env->fp_status);
367     PREC_END();
368 }
369 
370 void HELPER(fdmul)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
371 {
372     PREC_BEGIN(floatx80_precision_d);
373     res->d = floatx80_mul(val0->d, val1->d, &env->fp_status);
374     PREC_END();
375 }
376 
377 void HELPER(fsglmul)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
378 {
379     FloatRoundMode rounding_mode = get_float_rounding_mode(&env->fp_status);
380     floatx80 a, b;
381 
382     PREC_BEGIN(floatx80_precision_s);
383     set_float_rounding_mode(float_round_to_zero, &env->fp_status);
384     a = floatx80_round(val0->d, &env->fp_status);
385     b = floatx80_round(val1->d, &env->fp_status);
386     set_float_rounding_mode(rounding_mode, &env->fp_status);
387     res->d = floatx80_mul(a, b, &env->fp_status);
388     PREC_END();
389 }
390 
391 void HELPER(fdiv)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
392 {
393     res->d = floatx80_div(val1->d, val0->d, &env->fp_status);
394 }
395 
396 void HELPER(fsdiv)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
397 {
398     PREC_BEGIN(floatx80_precision_s);
399     res->d = floatx80_div(val1->d, val0->d, &env->fp_status);
400     PREC_END();
401 }
402 
403 void HELPER(fddiv)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
404 {
405     PREC_BEGIN(floatx80_precision_d);
406     res->d = floatx80_div(val1->d, val0->d, &env->fp_status);
407     PREC_END();
408 }
409 
410 void HELPER(fsgldiv)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
411 {
412     FloatRoundMode rounding_mode = get_float_rounding_mode(&env->fp_status);
413     floatx80 a, b;
414 
415     PREC_BEGIN(floatx80_precision_s);
416     set_float_rounding_mode(float_round_to_zero, &env->fp_status);
417     a = floatx80_round(val1->d, &env->fp_status);
418     b = floatx80_round(val0->d, &env->fp_status);
419     set_float_rounding_mode(rounding_mode, &env->fp_status);
420     res->d = floatx80_div(a, b, &env->fp_status);
421     PREC_END();
422 }
423 
424 static int float_comp_to_cc(FloatRelation float_compare)
425 {
426     switch (float_compare) {
427     case float_relation_equal:
428         return FPSR_CC_Z;
429     case float_relation_less:
430         return FPSR_CC_N;
431     case float_relation_unordered:
432         return FPSR_CC_A;
433     case float_relation_greater:
434         return 0;
435     default:
436         g_assert_not_reached();
437     }
438 }
439 
440 void HELPER(fcmp)(CPUM68KState *env, FPReg *val0, FPReg *val1)
441 {
442     FloatRelation float_compare;
443 
444     float_compare = floatx80_compare(val1->d, val0->d, &env->fp_status);
445     env->fpsr = (env->fpsr & ~FPSR_CC_MASK) | float_comp_to_cc(float_compare);
446 }
447 
448 void HELPER(ftst)(CPUM68KState *env, FPReg *val)
449 {
450     uint32_t cc = 0;
451 
452     if (floatx80_is_neg(val->d)) {
453         cc |= FPSR_CC_N;
454     }
455 
456     if (floatx80_is_any_nan(val->d)) {
457         cc |= FPSR_CC_A;
458     } else if (floatx80_is_infinity(val->d)) {
459         cc |= FPSR_CC_I;
460     } else if (floatx80_is_zero(val->d)) {
461         cc |= FPSR_CC_Z;
462     }
463     env->fpsr = (env->fpsr & ~FPSR_CC_MASK) | cc;
464 }
465 
466 void HELPER(fconst)(CPUM68KState *env, FPReg *val, uint32_t offset)
467 {
468     val->d = fpu_rom[offset];
469 }
470 
471 typedef int (*float_access)(CPUM68KState *env, uint32_t addr, FPReg *fp,
472                             uintptr_t ra);
473 
474 static uint32_t fmovem_predec(CPUM68KState *env, uint32_t addr, uint32_t mask,
475                               float_access access_fn)
476 {
477     uintptr_t ra = GETPC();
478     int i, size;
479 
480     for (i = 7; i >= 0; i--, mask <<= 1) {
481         if (mask & 0x80) {
482             size = access_fn(env, addr, &env->fregs[i], ra);
483             if ((mask & 0xff) != 0x80) {
484                 addr -= size;
485             }
486         }
487     }
488 
489     return addr;
490 }
491 
492 static uint32_t fmovem_postinc(CPUM68KState *env, uint32_t addr, uint32_t mask,
493                                float_access access_fn)
494 {
495     uintptr_t ra = GETPC();
496     int i, size;
497 
498     for (i = 0; i < 8; i++, mask <<= 1) {
499         if (mask & 0x80) {
500             size = access_fn(env, addr, &env->fregs[i], ra);
501             addr += size;
502         }
503     }
504 
505     return addr;
506 }
507 
508 static int cpu_ld_floatx80_ra(CPUM68KState *env, uint32_t addr, FPReg *fp,
509                               uintptr_t ra)
510 {
511     uint32_t high;
512     uint64_t low;
513 
514     high = cpu_ldl_data_ra(env, addr, ra);
515     low = cpu_ldq_data_ra(env, addr + 4, ra);
516 
517     fp->l.upper = high >> 16;
518     fp->l.lower = low;
519 
520     return 12;
521 }
522 
523 static int cpu_st_floatx80_ra(CPUM68KState *env, uint32_t addr, FPReg *fp,
524                                uintptr_t ra)
525 {
526     cpu_stl_data_ra(env, addr, fp->l.upper << 16, ra);
527     cpu_stq_data_ra(env, addr + 4, fp->l.lower, ra);
528 
529     return 12;
530 }
531 
532 static int cpu_ld_float64_ra(CPUM68KState *env, uint32_t addr, FPReg *fp,
533                              uintptr_t ra)
534 {
535     uint64_t val;
536 
537     val = cpu_ldq_data_ra(env, addr, ra);
538     fp->d = float64_to_floatx80(*(float64 *)&val, &env->fp_status);
539 
540     return 8;
541 }
542 
543 static int cpu_st_float64_ra(CPUM68KState *env, uint32_t addr, FPReg *fp,
544                              uintptr_t ra)
545 {
546     float64 val;
547 
548     val = floatx80_to_float64(fp->d, &env->fp_status);
549     cpu_stq_data_ra(env, addr, *(uint64_t *)&val, ra);
550 
551     return 8;
552 }
553 
554 uint32_t HELPER(fmovemx_st_predec)(CPUM68KState *env, uint32_t addr,
555                                    uint32_t mask)
556 {
557     return fmovem_predec(env, addr, mask, cpu_st_floatx80_ra);
558 }
559 
560 uint32_t HELPER(fmovemx_st_postinc)(CPUM68KState *env, uint32_t addr,
561                                     uint32_t mask)
562 {
563     return fmovem_postinc(env, addr, mask, cpu_st_floatx80_ra);
564 }
565 
566 uint32_t HELPER(fmovemx_ld_postinc)(CPUM68KState *env, uint32_t addr,
567                                     uint32_t mask)
568 {
569     return fmovem_postinc(env, addr, mask, cpu_ld_floatx80_ra);
570 }
571 
572 uint32_t HELPER(fmovemd_st_predec)(CPUM68KState *env, uint32_t addr,
573                                    uint32_t mask)
574 {
575     return fmovem_predec(env, addr, mask, cpu_st_float64_ra);
576 }
577 
578 uint32_t HELPER(fmovemd_st_postinc)(CPUM68KState *env, uint32_t addr,
579                                     uint32_t mask)
580 {
581     return fmovem_postinc(env, addr, mask, cpu_st_float64_ra);
582 }
583 
584 uint32_t HELPER(fmovemd_ld_postinc)(CPUM68KState *env, uint32_t addr,
585                                     uint32_t mask)
586 {
587     return fmovem_postinc(env, addr, mask, cpu_ld_float64_ra);
588 }
589 
590 static void make_quotient(CPUM68KState *env, int sign, uint32_t quotient)
591 {
592     quotient = (sign << 7) | (quotient & 0x7f);
593     env->fpsr = (env->fpsr & ~FPSR_QT_MASK) | (quotient << FPSR_QT_SHIFT);
594 }
595 
596 void HELPER(fmod)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
597 {
598     uint64_t quotient;
599     int sign = extractFloatx80Sign(val1->d) ^ extractFloatx80Sign(val0->d);
600 
601     res->d = floatx80_modrem(val1->d, val0->d, true, &quotient,
602                              &env->fp_status);
603 
604     if (floatx80_is_any_nan(res->d)) {
605         return;
606     }
607 
608     make_quotient(env, sign, quotient);
609 }
610 
611 void HELPER(frem)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
612 {
613     FPReg fp_quot;
614     floatx80 fp_rem;
615 
616     fp_rem = floatx80_rem(val1->d, val0->d, &env->fp_status);
617     if (!floatx80_is_any_nan(fp_rem)) {
618         float_status fp_status = { };
619         uint32_t quotient;
620         int sign;
621 
622         /* Calculate quotient directly using round to nearest mode */
623         set_float_2nan_prop_rule(float_2nan_prop_ab, &fp_status);
624         set_float_rounding_mode(float_round_nearest_even, &fp_status);
625         set_floatx80_rounding_precision(
626             get_floatx80_rounding_precision(&env->fp_status), &fp_status);
627         fp_quot.d = floatx80_div(val1->d, val0->d, &fp_status);
628 
629         sign = extractFloatx80Sign(fp_quot.d);
630         quotient = floatx80_to_int32(floatx80_abs(fp_quot.d), &env->fp_status);
631         make_quotient(env, sign, quotient);
632     }
633 
634     res->d = fp_rem;
635 }
636 
637 void HELPER(fgetexp)(CPUM68KState *env, FPReg *res, FPReg *val)
638 {
639     res->d = floatx80_getexp(val->d, &env->fp_status);
640 }
641 
642 void HELPER(fgetman)(CPUM68KState *env, FPReg *res, FPReg *val)
643 {
644     res->d = floatx80_getman(val->d, &env->fp_status);
645 }
646 
647 void HELPER(fscale)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
648 {
649     res->d = floatx80_scale(val1->d, val0->d, &env->fp_status);
650 }
651 
652 void HELPER(flognp1)(CPUM68KState *env, FPReg *res, FPReg *val)
653 {
654     res->d = floatx80_lognp1(val->d, &env->fp_status);
655 }
656 
657 void HELPER(flogn)(CPUM68KState *env, FPReg *res, FPReg *val)
658 {
659     res->d = floatx80_logn(val->d, &env->fp_status);
660 }
661 
662 void HELPER(flog10)(CPUM68KState *env, FPReg *res, FPReg *val)
663 {
664     res->d = floatx80_log10(val->d, &env->fp_status);
665 }
666 
667 void HELPER(flog2)(CPUM68KState *env, FPReg *res, FPReg *val)
668 {
669     res->d = floatx80_log2(val->d, &env->fp_status);
670 }
671 
672 void HELPER(fetox)(CPUM68KState *env, FPReg *res, FPReg *val)
673 {
674     res->d = floatx80_etox(val->d, &env->fp_status);
675 }
676 
677 void HELPER(ftwotox)(CPUM68KState *env, FPReg *res, FPReg *val)
678 {
679     res->d = floatx80_twotox(val->d, &env->fp_status);
680 }
681 
682 void HELPER(ftentox)(CPUM68KState *env, FPReg *res, FPReg *val)
683 {
684     res->d = floatx80_tentox(val->d, &env->fp_status);
685 }
686 
687 void HELPER(ftan)(CPUM68KState *env, FPReg *res, FPReg *val)
688 {
689     res->d = floatx80_tan(val->d, &env->fp_status);
690 }
691 
692 void HELPER(fsin)(CPUM68KState *env, FPReg *res, FPReg *val)
693 {
694     res->d = floatx80_sin(val->d, &env->fp_status);
695 }
696 
697 void HELPER(fcos)(CPUM68KState *env, FPReg *res, FPReg *val)
698 {
699     res->d = floatx80_cos(val->d, &env->fp_status);
700 }
701 
702 void HELPER(fsincos)(CPUM68KState *env, FPReg *res0, FPReg *res1, FPReg *val)
703 {
704     floatx80 a = val->d;
705     /*
706      * If res0 and res1 specify the same floating-point data register,
707      * the sine result is stored in the register, and the cosine
708      * result is discarded.
709      */
710     res1->d = floatx80_cos(a, &env->fp_status);
711     res0->d = floatx80_sin(a, &env->fp_status);
712 }
713 
714 void HELPER(fatan)(CPUM68KState *env, FPReg *res, FPReg *val)
715 {
716     res->d = floatx80_atan(val->d, &env->fp_status);
717 }
718 
719 void HELPER(fasin)(CPUM68KState *env, FPReg *res, FPReg *val)
720 {
721     res->d = floatx80_asin(val->d, &env->fp_status);
722 }
723 
724 void HELPER(facos)(CPUM68KState *env, FPReg *res, FPReg *val)
725 {
726     res->d = floatx80_acos(val->d, &env->fp_status);
727 }
728 
729 void HELPER(fatanh)(CPUM68KState *env, FPReg *res, FPReg *val)
730 {
731     res->d = floatx80_atanh(val->d, &env->fp_status);
732 }
733 
734 void HELPER(fetoxm1)(CPUM68KState *env, FPReg *res, FPReg *val)
735 {
736     res->d = floatx80_etoxm1(val->d, &env->fp_status);
737 }
738 
739 void HELPER(ftanh)(CPUM68KState *env, FPReg *res, FPReg *val)
740 {
741     res->d = floatx80_tanh(val->d, &env->fp_status);
742 }
743 
744 void HELPER(fsinh)(CPUM68KState *env, FPReg *res, FPReg *val)
745 {
746     res->d = floatx80_sinh(val->d, &env->fp_status);
747 }
748 
749 void HELPER(fcosh)(CPUM68KState *env, FPReg *res, FPReg *val)
750 {
751     res->d = floatx80_cosh(val->d, &env->fp_status);
752 }
753