xref: /openbmc/qemu/target/m68k/fpu_helper.c (revision 243705aa) 
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 #define PREC_BEGIN(prec)                                        \
168     do {                                                        \
169         FloatX80RoundPrec old =                                 \
170             get_floatx80_rounding_precision(&env->fp_status);   \
171         set_floatx80_rounding_precision(prec, &env->fp_status)  \
172 
173 #define PREC_END()                                              \
174         set_floatx80_rounding_precision(old, &env->fp_status);  \
175     } while (0)
176 
177 void HELPER(fsround)(CPUM68KState *env, FPReg *res, FPReg *val)
178 {
179     PREC_BEGIN(floatx80_precision_s);
180     res->d = floatx80_round(val->d, &env->fp_status);
181     PREC_END();
182 }
183 
184 void HELPER(fdround)(CPUM68KState *env, FPReg *res, FPReg *val)
185 {
186     PREC_BEGIN(floatx80_precision_d);
187     res->d = floatx80_round(val->d, &env->fp_status);
188     PREC_END();
189 }
190 
191 void HELPER(fsqrt)(CPUM68KState *env, FPReg *res, FPReg *val)
192 {
193     res->d = floatx80_sqrt(val->d, &env->fp_status);
194 }
195 
196 void HELPER(fssqrt)(CPUM68KState *env, FPReg *res, FPReg *val)
197 {
198     PREC_BEGIN(floatx80_precision_s);
199     res->d = floatx80_sqrt(val->d, &env->fp_status);
200     PREC_END();
201 }
202 
203 void HELPER(fdsqrt)(CPUM68KState *env, FPReg *res, FPReg *val)
204 {
205     PREC_BEGIN(floatx80_precision_d);
206     res->d = floatx80_sqrt(val->d, &env->fp_status);
207     PREC_END();
208 }
209 
210 void HELPER(fabs)(CPUM68KState *env, FPReg *res, FPReg *val)
211 {
212     res->d = floatx80_round(floatx80_abs(val->d), &env->fp_status);
213 }
214 
215 void HELPER(fsabs)(CPUM68KState *env, FPReg *res, FPReg *val)
216 {
217     PREC_BEGIN(floatx80_precision_s);
218     res->d = floatx80_round(floatx80_abs(val->d), &env->fp_status);
219     PREC_END();
220 }
221 
222 void HELPER(fdabs)(CPUM68KState *env, FPReg *res, FPReg *val)
223 {
224     PREC_BEGIN(floatx80_precision_d);
225     res->d = floatx80_round(floatx80_abs(val->d), &env->fp_status);
226     PREC_END();
227 }
228 
229 void HELPER(fneg)(CPUM68KState *env, FPReg *res, FPReg *val)
230 {
231     res->d = floatx80_round(floatx80_chs(val->d), &env->fp_status);
232 }
233 
234 void HELPER(fsneg)(CPUM68KState *env, FPReg *res, FPReg *val)
235 {
236     PREC_BEGIN(floatx80_precision_s);
237     res->d = floatx80_round(floatx80_chs(val->d), &env->fp_status);
238     PREC_END();
239 }
240 
241 void HELPER(fdneg)(CPUM68KState *env, FPReg *res, FPReg *val)
242 {
243     PREC_BEGIN(floatx80_precision_d);
244     res->d = floatx80_round(floatx80_chs(val->d), &env->fp_status);
245     PREC_END();
246 }
247 
248 void HELPER(fadd)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
249 {
250     res->d = floatx80_add(val0->d, val1->d, &env->fp_status);
251 }
252 
253 void HELPER(fsadd)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
254 {
255     PREC_BEGIN(floatx80_precision_s);
256     res->d = floatx80_add(val0->d, val1->d, &env->fp_status);
257     PREC_END();
258 }
259 
260 void HELPER(fdadd)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
261 {
262     PREC_BEGIN(floatx80_precision_d);
263     res->d = floatx80_add(val0->d, val1->d, &env->fp_status);
264     PREC_END();
265 }
266 
267 void HELPER(fsub)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
268 {
269     res->d = floatx80_sub(val1->d, val0->d, &env->fp_status);
270 }
271 
272 void HELPER(fssub)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
273 {
274     PREC_BEGIN(floatx80_precision_s);
275     res->d = floatx80_sub(val1->d, val0->d, &env->fp_status);
276     PREC_END();
277 }
278 
279 void HELPER(fdsub)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
280 {
281     PREC_BEGIN(floatx80_precision_d);
282     res->d = floatx80_sub(val1->d, val0->d, &env->fp_status);
283     PREC_END();
284 }
285 
286 void HELPER(fmul)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
287 {
288     res->d = floatx80_mul(val0->d, val1->d, &env->fp_status);
289 }
290 
291 void HELPER(fsmul)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
292 {
293     PREC_BEGIN(floatx80_precision_s);
294     res->d = floatx80_mul(val0->d, val1->d, &env->fp_status);
295     PREC_END();
296 }
297 
298 void HELPER(fdmul)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
299 {
300     PREC_BEGIN(floatx80_precision_d);
301     res->d = floatx80_mul(val0->d, val1->d, &env->fp_status);
302     PREC_END();
303 }
304 
305 void HELPER(fsglmul)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
306 {
307     FloatRoundMode rounding_mode = get_float_rounding_mode(&env->fp_status);
308     floatx80 a, b;
309 
310     PREC_BEGIN(floatx80_precision_s);
311     set_float_rounding_mode(float_round_to_zero, &env->fp_status);
312     a = floatx80_round(val0->d, &env->fp_status);
313     b = floatx80_round(val1->d, &env->fp_status);
314     set_float_rounding_mode(rounding_mode, &env->fp_status);
315     res->d = floatx80_mul(a, b, &env->fp_status);
316     PREC_END();
317 }
318 
319 void HELPER(fdiv)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
320 {
321     res->d = floatx80_div(val1->d, val0->d, &env->fp_status);
322 }
323 
324 void HELPER(fsdiv)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
325 {
326     PREC_BEGIN(floatx80_precision_s);
327     res->d = floatx80_div(val1->d, val0->d, &env->fp_status);
328     PREC_END();
329 }
330 
331 void HELPER(fddiv)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
332 {
333     PREC_BEGIN(floatx80_precision_d);
334     res->d = floatx80_div(val1->d, val0->d, &env->fp_status);
335     PREC_END();
336 }
337 
338 void HELPER(fsgldiv)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
339 {
340     FloatRoundMode rounding_mode = get_float_rounding_mode(&env->fp_status);
341     floatx80 a, b;
342 
343     PREC_BEGIN(floatx80_precision_s);
344     set_float_rounding_mode(float_round_to_zero, &env->fp_status);
345     a = floatx80_round(val1->d, &env->fp_status);
346     b = floatx80_round(val0->d, &env->fp_status);
347     set_float_rounding_mode(rounding_mode, &env->fp_status);
348     res->d = floatx80_div(a, b, &env->fp_status);
349     PREC_END();
350 }
351 
352 static int float_comp_to_cc(FloatRelation float_compare)
353 {
354     switch (float_compare) {
355     case float_relation_equal:
356         return FPSR_CC_Z;
357     case float_relation_less:
358         return FPSR_CC_N;
359     case float_relation_unordered:
360         return FPSR_CC_A;
361     case float_relation_greater:
362         return 0;
363     default:
364         g_assert_not_reached();
365     }
366 }
367 
368 void HELPER(fcmp)(CPUM68KState *env, FPReg *val0, FPReg *val1)
369 {
370     FloatRelation float_compare;
371 
372     float_compare = floatx80_compare(val1->d, val0->d, &env->fp_status);
373     env->fpsr = (env->fpsr & ~FPSR_CC_MASK) | float_comp_to_cc(float_compare);
374 }
375 
376 void HELPER(ftst)(CPUM68KState *env, FPReg *val)
377 {
378     uint32_t cc = 0;
379 
380     if (floatx80_is_neg(val->d)) {
381         cc |= FPSR_CC_N;
382     }
383 
384     if (floatx80_is_any_nan(val->d)) {
385         cc |= FPSR_CC_A;
386     } else if (floatx80_is_infinity(val->d)) {
387         cc |= FPSR_CC_I;
388     } else if (floatx80_is_zero(val->d)) {
389         cc |= FPSR_CC_Z;
390     }
391     env->fpsr = (env->fpsr & ~FPSR_CC_MASK) | cc;
392 }
393 
394 void HELPER(fconst)(CPUM68KState *env, FPReg *val, uint32_t offset)
395 {
396     val->d = fpu_rom[offset];
397 }
398 
399 typedef int (*float_access)(CPUM68KState *env, uint32_t addr, FPReg *fp,
400                             uintptr_t ra);
401 
402 static uint32_t fmovem_predec(CPUM68KState *env, uint32_t addr, uint32_t mask,
403                               float_access access_fn)
404 {
405     uintptr_t ra = GETPC();
406     int i, size;
407 
408     for (i = 7; i >= 0; i--, mask <<= 1) {
409         if (mask & 0x80) {
410             size = access_fn(env, addr, &env->fregs[i], ra);
411             if ((mask & 0xff) != 0x80) {
412                 addr -= size;
413             }
414         }
415     }
416 
417     return addr;
418 }
419 
420 static uint32_t fmovem_postinc(CPUM68KState *env, uint32_t addr, uint32_t mask,
421                                float_access access_fn)
422 {
423     uintptr_t ra = GETPC();
424     int i, size;
425 
426     for (i = 0; i < 8; i++, mask <<= 1) {
427         if (mask & 0x80) {
428             size = access_fn(env, addr, &env->fregs[i], ra);
429             addr += size;
430         }
431     }
432 
433     return addr;
434 }
435 
436 static int cpu_ld_floatx80_ra(CPUM68KState *env, uint32_t addr, FPReg *fp,
437                               uintptr_t ra)
438 {
439     uint32_t high;
440     uint64_t low;
441 
442     high = cpu_ldl_data_ra(env, addr, ra);
443     low = cpu_ldq_data_ra(env, addr + 4, ra);
444 
445     fp->l.upper = high >> 16;
446     fp->l.lower = low;
447 
448     return 12;
449 }
450 
451 static int cpu_st_floatx80_ra(CPUM68KState *env, uint32_t addr, FPReg *fp,
452                                uintptr_t ra)
453 {
454     cpu_stl_data_ra(env, addr, fp->l.upper << 16, ra);
455     cpu_stq_data_ra(env, addr + 4, fp->l.lower, ra);
456 
457     return 12;
458 }
459 
460 static int cpu_ld_float64_ra(CPUM68KState *env, uint32_t addr, FPReg *fp,
461                              uintptr_t ra)
462 {
463     uint64_t val;
464 
465     val = cpu_ldq_data_ra(env, addr, ra);
466     fp->d = float64_to_floatx80(*(float64 *)&val, &env->fp_status);
467 
468     return 8;
469 }
470 
471 static int cpu_st_float64_ra(CPUM68KState *env, uint32_t addr, FPReg *fp,
472                              uintptr_t ra)
473 {
474     float64 val;
475 
476     val = floatx80_to_float64(fp->d, &env->fp_status);
477     cpu_stq_data_ra(env, addr, *(uint64_t *)&val, ra);
478 
479     return 8;
480 }
481 
482 uint32_t HELPER(fmovemx_st_predec)(CPUM68KState *env, uint32_t addr,
483                                    uint32_t mask)
484 {
485     return fmovem_predec(env, addr, mask, cpu_st_floatx80_ra);
486 }
487 
488 uint32_t HELPER(fmovemx_st_postinc)(CPUM68KState *env, uint32_t addr,
489                                     uint32_t mask)
490 {
491     return fmovem_postinc(env, addr, mask, cpu_st_floatx80_ra);
492 }
493 
494 uint32_t HELPER(fmovemx_ld_postinc)(CPUM68KState *env, uint32_t addr,
495                                     uint32_t mask)
496 {
497     return fmovem_postinc(env, addr, mask, cpu_ld_floatx80_ra);
498 }
499 
500 uint32_t HELPER(fmovemd_st_predec)(CPUM68KState *env, uint32_t addr,
501                                    uint32_t mask)
502 {
503     return fmovem_predec(env, addr, mask, cpu_st_float64_ra);
504 }
505 
506 uint32_t HELPER(fmovemd_st_postinc)(CPUM68KState *env, uint32_t addr,
507                                     uint32_t mask)
508 {
509     return fmovem_postinc(env, addr, mask, cpu_st_float64_ra);
510 }
511 
512 uint32_t HELPER(fmovemd_ld_postinc)(CPUM68KState *env, uint32_t addr,
513                                     uint32_t mask)
514 {
515     return fmovem_postinc(env, addr, mask, cpu_ld_float64_ra);
516 }
517 
518 static void make_quotient(CPUM68KState *env, int sign, uint32_t quotient)
519 {
520     quotient = (sign << 7) | (quotient & 0x7f);
521     env->fpsr = (env->fpsr & ~FPSR_QT_MASK) | (quotient << FPSR_QT_SHIFT);
522 }
523 
524 void HELPER(fmod)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
525 {
526     uint64_t quotient;
527     int sign = extractFloatx80Sign(val1->d) ^ extractFloatx80Sign(val0->d);
528 
529     res->d = floatx80_modrem(val1->d, val0->d, true, &quotient,
530                              &env->fp_status);
531 
532     if (floatx80_is_any_nan(res->d)) {
533         return;
534     }
535 
536     make_quotient(env, sign, quotient);
537 }
538 
539 void HELPER(frem)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
540 {
541     FPReg fp_quot;
542     floatx80 fp_rem;
543 
544     fp_rem = floatx80_rem(val1->d, val0->d, &env->fp_status);
545     if (!floatx80_is_any_nan(fp_rem)) {
546         float_status fp_status = { };
547         uint32_t quotient;
548         int sign;
549 
550         /* Calculate quotient directly using round to nearest mode */
551         set_float_rounding_mode(float_round_nearest_even, &fp_status);
552         set_floatx80_rounding_precision(
553             get_floatx80_rounding_precision(&env->fp_status), &fp_status);
554         fp_quot.d = floatx80_div(val1->d, val0->d, &fp_status);
555 
556         sign = extractFloatx80Sign(fp_quot.d);
557         quotient = floatx80_to_int32(floatx80_abs(fp_quot.d), &env->fp_status);
558         make_quotient(env, sign, quotient);
559     }
560 
561     res->d = fp_rem;
562 }
563 
564 void HELPER(fgetexp)(CPUM68KState *env, FPReg *res, FPReg *val)
565 {
566     res->d = floatx80_getexp(val->d, &env->fp_status);
567 }
568 
569 void HELPER(fgetman)(CPUM68KState *env, FPReg *res, FPReg *val)
570 {
571     res->d = floatx80_getman(val->d, &env->fp_status);
572 }
573 
574 void HELPER(fscale)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
575 {
576     res->d = floatx80_scale(val1->d, val0->d, &env->fp_status);
577 }
578 
579 void HELPER(flognp1)(CPUM68KState *env, FPReg *res, FPReg *val)
580 {
581     res->d = floatx80_lognp1(val->d, &env->fp_status);
582 }
583 
584 void HELPER(flogn)(CPUM68KState *env, FPReg *res, FPReg *val)
585 {
586     res->d = floatx80_logn(val->d, &env->fp_status);
587 }
588 
589 void HELPER(flog10)(CPUM68KState *env, FPReg *res, FPReg *val)
590 {
591     res->d = floatx80_log10(val->d, &env->fp_status);
592 }
593 
594 void HELPER(flog2)(CPUM68KState *env, FPReg *res, FPReg *val)
595 {
596     res->d = floatx80_log2(val->d, &env->fp_status);
597 }
598 
599 void HELPER(fetox)(CPUM68KState *env, FPReg *res, FPReg *val)
600 {
601     res->d = floatx80_etox(val->d, &env->fp_status);
602 }
603 
604 void HELPER(ftwotox)(CPUM68KState *env, FPReg *res, FPReg *val)
605 {
606     res->d = floatx80_twotox(val->d, &env->fp_status);
607 }
608 
609 void HELPER(ftentox)(CPUM68KState *env, FPReg *res, FPReg *val)
610 {
611     res->d = floatx80_tentox(val->d, &env->fp_status);
612 }
613 
614 void HELPER(ftan)(CPUM68KState *env, FPReg *res, FPReg *val)
615 {
616     res->d = floatx80_tan(val->d, &env->fp_status);
617 }
618 
619 void HELPER(fsin)(CPUM68KState *env, FPReg *res, FPReg *val)
620 {
621     res->d = floatx80_sin(val->d, &env->fp_status);
622 }
623 
624 void HELPER(fcos)(CPUM68KState *env, FPReg *res, FPReg *val)
625 {
626     res->d = floatx80_cos(val->d, &env->fp_status);
627 }
628 
629 void HELPER(fsincos)(CPUM68KState *env, FPReg *res0, FPReg *res1, FPReg *val)
630 {
631     floatx80 a = val->d;
632     /*
633      * If res0 and res1 specify the same floating-point data register,
634      * the sine result is stored in the register, and the cosine
635      * result is discarded.
636      */
637     res1->d = floatx80_cos(a, &env->fp_status);
638     res0->d = floatx80_sin(a, &env->fp_status);
639 }
640 
641 void HELPER(fatan)(CPUM68KState *env, FPReg *res, FPReg *val)
642 {
643     res->d = floatx80_atan(val->d, &env->fp_status);
644 }
645 
646 void HELPER(fasin)(CPUM68KState *env, FPReg *res, FPReg *val)
647 {
648     res->d = floatx80_asin(val->d, &env->fp_status);
649 }
650 
651 void HELPER(facos)(CPUM68KState *env, FPReg *res, FPReg *val)
652 {
653     res->d = floatx80_acos(val->d, &env->fp_status);
654 }
655 
656 void HELPER(fatanh)(CPUM68KState *env, FPReg *res, FPReg *val)
657 {
658     res->d = floatx80_atanh(val->d, &env->fp_status);
659 }
660 
661 void HELPER(fetoxm1)(CPUM68KState *env, FPReg *res, FPReg *val)
662 {
663     res->d = floatx80_etoxm1(val->d, &env->fp_status);
664 }
665 
666 void HELPER(ftanh)(CPUM68KState *env, FPReg *res, FPReg *val)
667 {
668     res->d = floatx80_tanh(val->d, &env->fp_status);
669 }
670 
671 void HELPER(fsinh)(CPUM68KState *env, FPReg *res, FPReg *val)
672 {
673     res->d = floatx80_sinh(val->d, &env->fp_status);
674 }
675 
676 void HELPER(fcosh)(CPUM68KState *env, FPReg *res, FPReg *val)
677 {
678     res->d = floatx80_cosh(val->d, &env->fp_status);
679 }
680