?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge remote-tracking branch 'remotes/kraxel/tags/pull-ui-20161028-1' into staging
[qemu/ar7.git] / target-ppc / translate / fp-impl.inc.c
blob872af7b56f1f9d5c15b9441f428424281b2fa039
1 /*
2 * translate-fp.c
3 *
4 * Standard FPU translation
5 */
6
7 static inline void gen_reset_fpstatus(void)
8 {
9 gen_helper_reset_fpstatus(cpu_env);
10 }
11
12 static inline void gen_compute_fprf(TCGv_i64 arg)
13 {
14 gen_helper_compute_fprf(cpu_env, arg);
15 gen_helper_float_check_status(cpu_env);
16 }
17
18 #if defined(TARGET_PPC64)
19 static void gen_set_cr1_from_fpscr(DisasContext *ctx)
20 {
21 TCGv_i32 tmp = tcg_temp_new_i32();
22 tcg_gen_trunc_tl_i32(tmp, cpu_fpscr);
23 tcg_gen_shri_i32(cpu_crf[1], tmp, 28);
24 tcg_temp_free_i32(tmp);
25 }
26 #else
27 static void gen_set_cr1_from_fpscr(DisasContext *ctx)
28 {
29 tcg_gen_shri_tl(cpu_crf[1], cpu_fpscr, 28);
30 }
31 #endif
32
33 /*** Floating-Point arithmetic ***/
34 #define _GEN_FLOAT_ACB(name, op, op1, op2, isfloat, set_fprf, type) \
35 static void gen_f##name(DisasContext *ctx) \
36 { \
37 if (unlikely(!ctx->fpu_enabled)) { \
38 gen_exception(ctx, POWERPC_EXCP_FPU); \
39 return; \
40 } \
41 gen_reset_fpstatus(); \
42 gen_helper_f##op(cpu_fpr[rD(ctx->opcode)], cpu_env, \
43 cpu_fpr[rA(ctx->opcode)], \
44 cpu_fpr[rC(ctx->opcode)], cpu_fpr[rB(ctx->opcode)]); \
45 if (isfloat) { \
46 gen_helper_frsp(cpu_fpr[rD(ctx->opcode)], cpu_env, \
47 cpu_fpr[rD(ctx->opcode)]); \
48 } \
49 if (set_fprf) { \
50 gen_compute_fprf(cpu_fpr[rD(ctx->opcode)]); \
51 } \
52 if (unlikely(Rc(ctx->opcode) != 0)) { \
53 gen_set_cr1_from_fpscr(ctx); \
54 } \
55 }
56
57 #define GEN_FLOAT_ACB(name, op2, set_fprf, type) \
58 _GEN_FLOAT_ACB(name, name, 0x3F, op2, 0, set_fprf, type); \
59 _GEN_FLOAT_ACB(name##s, name, 0x3B, op2, 1, set_fprf, type);
60
61 #define _GEN_FLOAT_AB(name, op, op1, op2, inval, isfloat, set_fprf, type) \
62 static void gen_f##name(DisasContext *ctx) \
63 { \
64 if (unlikely(!ctx->fpu_enabled)) { \
65 gen_exception(ctx, POWERPC_EXCP_FPU); \
66 return; \
67 } \
68 gen_reset_fpstatus(); \
69 gen_helper_f##op(cpu_fpr[rD(ctx->opcode)], cpu_env, \
70 cpu_fpr[rA(ctx->opcode)], \
71 cpu_fpr[rB(ctx->opcode)]); \
72 if (isfloat) { \
73 gen_helper_frsp(cpu_fpr[rD(ctx->opcode)], cpu_env, \
74 cpu_fpr[rD(ctx->opcode)]); \
75 } \
76 if (set_fprf) { \
77 gen_compute_fprf(cpu_fpr[rD(ctx->opcode)]); \
78 } \
79 if (unlikely(Rc(ctx->opcode) != 0)) { \
80 gen_set_cr1_from_fpscr(ctx); \
81 } \
82 }
83 #define GEN_FLOAT_AB(name, op2, inval, set_fprf, type) \
84 _GEN_FLOAT_AB(name, name, 0x3F, op2, inval, 0, set_fprf, type); \
85 _GEN_FLOAT_AB(name##s, name, 0x3B, op2, inval, 1, set_fprf, type);
86
87 #define _GEN_FLOAT_AC(name, op, op1, op2, inval, isfloat, set_fprf, type) \
88 static void gen_f##name(DisasContext *ctx) \
89 { \
90 if (unlikely(!ctx->fpu_enabled)) { \
91 gen_exception(ctx, POWERPC_EXCP_FPU); \
92 return; \
93 } \
94 gen_reset_fpstatus(); \
95 gen_helper_f##op(cpu_fpr[rD(ctx->opcode)], cpu_env, \
96 cpu_fpr[rA(ctx->opcode)], \
97 cpu_fpr[rC(ctx->opcode)]); \
98 if (isfloat) { \
99 gen_helper_frsp(cpu_fpr[rD(ctx->opcode)], cpu_env, \
100 cpu_fpr[rD(ctx->opcode)]); \
101 } \
102 if (set_fprf) { \
103 gen_compute_fprf(cpu_fpr[rD(ctx->opcode)]); \
104 } \
105 if (unlikely(Rc(ctx->opcode) != 0)) { \
106 gen_set_cr1_from_fpscr(ctx); \
107 } \
108 }
109 #define GEN_FLOAT_AC(name, op2, inval, set_fprf, type) \
110 _GEN_FLOAT_AC(name, name, 0x3F, op2, inval, 0, set_fprf, type); \
111 _GEN_FLOAT_AC(name##s, name, 0x3B, op2, inval, 1, set_fprf, type);
112
113 #define GEN_FLOAT_B(name, op2, op3, set_fprf, type) \
114 static void gen_f##name(DisasContext *ctx) \
115 { \
116 if (unlikely(!ctx->fpu_enabled)) { \
117 gen_exception(ctx, POWERPC_EXCP_FPU); \
118 return; \
119 } \
120 gen_reset_fpstatus(); \
121 gen_helper_f##name(cpu_fpr[rD(ctx->opcode)], cpu_env, \
122 cpu_fpr[rB(ctx->opcode)]); \
123 if (set_fprf) { \
124 gen_compute_fprf(cpu_fpr[rD(ctx->opcode)]); \
125 } \
126 if (unlikely(Rc(ctx->opcode) != 0)) { \
127 gen_set_cr1_from_fpscr(ctx); \
128 } \
129 }
130
131 #define GEN_FLOAT_BS(name, op1, op2, set_fprf, type) \
132 static void gen_f##name(DisasContext *ctx) \
133 { \
134 if (unlikely(!ctx->fpu_enabled)) { \
135 gen_exception(ctx, POWERPC_EXCP_FPU); \
136 return; \
137 } \
138 gen_reset_fpstatus(); \
139 gen_helper_f##name(cpu_fpr[rD(ctx->opcode)], cpu_env, \
140 cpu_fpr[rB(ctx->opcode)]); \
141 if (set_fprf) { \
142 gen_compute_fprf(cpu_fpr[rD(ctx->opcode)]); \
143 } \
144 if (unlikely(Rc(ctx->opcode) != 0)) { \
145 gen_set_cr1_from_fpscr(ctx); \
146 } \
147 }
148
149 /* fadd - fadds */
150 GEN_FLOAT_AB(add, 0x15, 0x000007C0, 1, PPC_FLOAT);
151 /* fdiv - fdivs */
152 GEN_FLOAT_AB(div, 0x12, 0x000007C0, 1, PPC_FLOAT);
153 /* fmul - fmuls */
154 GEN_FLOAT_AC(mul, 0x19, 0x0000F800, 1, PPC_FLOAT);
155
156 /* fre */
157 GEN_FLOAT_BS(re, 0x3F, 0x18, 1, PPC_FLOAT_EXT);
158
159 /* fres */
160 GEN_FLOAT_BS(res, 0x3B, 0x18, 1, PPC_FLOAT_FRES);
161
162 /* frsqrte */
163 GEN_FLOAT_BS(rsqrte, 0x3F, 0x1A, 1, PPC_FLOAT_FRSQRTE);
164
165 /* frsqrtes */
166 static void gen_frsqrtes(DisasContext *ctx)
167 {
168 if (unlikely(!ctx->fpu_enabled)) {
169 gen_exception(ctx, POWERPC_EXCP_FPU);
170 return;
171 }
172 gen_reset_fpstatus();
173 gen_helper_frsqrte(cpu_fpr[rD(ctx->opcode)], cpu_env,
174 cpu_fpr[rB(ctx->opcode)]);
175 gen_helper_frsp(cpu_fpr[rD(ctx->opcode)], cpu_env,
176 cpu_fpr[rD(ctx->opcode)]);
177 gen_compute_fprf(cpu_fpr[rD(ctx->opcode)]);
178 if (unlikely(Rc(ctx->opcode) != 0)) {
179 gen_set_cr1_from_fpscr(ctx);
180 }
181 }
182
183 /* fsel */
184 _GEN_FLOAT_ACB(sel, sel, 0x3F, 0x17, 0, 0, PPC_FLOAT_FSEL);
185 /* fsub - fsubs */
186 GEN_FLOAT_AB(sub, 0x14, 0x000007C0, 1, PPC_FLOAT);
187 /* Optional: */
188
189 /* fsqrt */
190 static void gen_fsqrt(DisasContext *ctx)
191 {
192 if (unlikely(!ctx->fpu_enabled)) {
193 gen_exception(ctx, POWERPC_EXCP_FPU);
194 return;
195 }
196 gen_reset_fpstatus();
197 gen_helper_fsqrt(cpu_fpr[rD(ctx->opcode)], cpu_env,
198 cpu_fpr[rB(ctx->opcode)]);
199 gen_compute_fprf(cpu_fpr[rD(ctx->opcode)]);
200 if (unlikely(Rc(ctx->opcode) != 0)) {
201 gen_set_cr1_from_fpscr(ctx);
202 }
203 }
204
205 static void gen_fsqrts(DisasContext *ctx)
206 {
207 if (unlikely(!ctx->fpu_enabled)) {
208 gen_exception(ctx, POWERPC_EXCP_FPU);
209 return;
210 }
211 gen_reset_fpstatus();
212 gen_helper_fsqrt(cpu_fpr[rD(ctx->opcode)], cpu_env,
213 cpu_fpr[rB(ctx->opcode)]);
214 gen_helper_frsp(cpu_fpr[rD(ctx->opcode)], cpu_env,
215 cpu_fpr[rD(ctx->opcode)]);
216 gen_compute_fprf(cpu_fpr[rD(ctx->opcode)]);
217 if (unlikely(Rc(ctx->opcode) != 0)) {
218 gen_set_cr1_from_fpscr(ctx);
219 }
220 }
221
222 /*** Floating-Point multiply-and-add ***/
223 /* fmadd - fmadds */
224 GEN_FLOAT_ACB(madd, 0x1D, 1, PPC_FLOAT);
225 /* fmsub - fmsubs */
226 GEN_FLOAT_ACB(msub, 0x1C, 1, PPC_FLOAT);
227 /* fnmadd - fnmadds */
228 GEN_FLOAT_ACB(nmadd, 0x1F, 1, PPC_FLOAT);
229 /* fnmsub - fnmsubs */
230 GEN_FLOAT_ACB(nmsub, 0x1E, 1, PPC_FLOAT);
231
232 /*** Floating-Point round & convert ***/
233 /* fctiw */
234 GEN_FLOAT_B(ctiw, 0x0E, 0x00, 0, PPC_FLOAT);
235 /* fctiwu */
236 GEN_FLOAT_B(ctiwu, 0x0E, 0x04, 0, PPC2_FP_CVT_ISA206);
237 /* fctiwz */
238 GEN_FLOAT_B(ctiwz, 0x0F, 0x00, 0, PPC_FLOAT);
239 /* fctiwuz */
240 GEN_FLOAT_B(ctiwuz, 0x0F, 0x04, 0, PPC2_FP_CVT_ISA206);
241 /* frsp */
242 GEN_FLOAT_B(rsp, 0x0C, 0x00, 1, PPC_FLOAT);
243 /* fcfid */
244 GEN_FLOAT_B(cfid, 0x0E, 0x1A, 1, PPC2_FP_CVT_S64);
245 /* fcfids */
246 GEN_FLOAT_B(cfids, 0x0E, 0x1A, 0, PPC2_FP_CVT_ISA206);
247 /* fcfidu */
248 GEN_FLOAT_B(cfidu, 0x0E, 0x1E, 0, PPC2_FP_CVT_ISA206);
249 /* fcfidus */
250 GEN_FLOAT_B(cfidus, 0x0E, 0x1E, 0, PPC2_FP_CVT_ISA206);
251 /* fctid */
252 GEN_FLOAT_B(ctid, 0x0E, 0x19, 0, PPC2_FP_CVT_S64);
253 /* fctidu */
254 GEN_FLOAT_B(ctidu, 0x0E, 0x1D, 0, PPC2_FP_CVT_ISA206);
255 /* fctidz */
256 GEN_FLOAT_B(ctidz, 0x0F, 0x19, 0, PPC2_FP_CVT_S64);
257 /* fctidu */
258 GEN_FLOAT_B(ctiduz, 0x0F, 0x1D, 0, PPC2_FP_CVT_ISA206);
259
260 /* frin */
261 GEN_FLOAT_B(rin, 0x08, 0x0C, 1, PPC_FLOAT_EXT);
262 /* friz */
263 GEN_FLOAT_B(riz, 0x08, 0x0D, 1, PPC_FLOAT_EXT);
264 /* frip */
265 GEN_FLOAT_B(rip, 0x08, 0x0E, 1, PPC_FLOAT_EXT);
266 /* frim */
267 GEN_FLOAT_B(rim, 0x08, 0x0F, 1, PPC_FLOAT_EXT);
268
269 static void gen_ftdiv(DisasContext *ctx)
270 {
271 if (unlikely(!ctx->fpu_enabled)) {
272 gen_exception(ctx, POWERPC_EXCP_FPU);
273 return;
274 }
275 gen_helper_ftdiv(cpu_crf[crfD(ctx->opcode)], cpu_fpr[rA(ctx->opcode)],
276 cpu_fpr[rB(ctx->opcode)]);
277 }
278
279 static void gen_ftsqrt(DisasContext *ctx)
280 {
281 if (unlikely(!ctx->fpu_enabled)) {
282 gen_exception(ctx, POWERPC_EXCP_FPU);
283 return;
284 }
285 gen_helper_ftsqrt(cpu_crf[crfD(ctx->opcode)], cpu_fpr[rB(ctx->opcode)]);
286 }
287
288
289
290 /*** Floating-Point compare ***/
291
292 /* fcmpo */
293 static void gen_fcmpo(DisasContext *ctx)
294 {
295 TCGv_i32 crf;
296 if (unlikely(!ctx->fpu_enabled)) {
297 gen_exception(ctx, POWERPC_EXCP_FPU);
298 return;
299 }
300 gen_reset_fpstatus();
301 crf = tcg_const_i32(crfD(ctx->opcode));
302 gen_helper_fcmpo(cpu_env, cpu_fpr[rA(ctx->opcode)],
303 cpu_fpr[rB(ctx->opcode)], crf);
304 tcg_temp_free_i32(crf);
305 gen_helper_float_check_status(cpu_env);
306 }
307
308 /* fcmpu */
309 static void gen_fcmpu(DisasContext *ctx)
310 {
311 TCGv_i32 crf;
312 if (unlikely(!ctx->fpu_enabled)) {
313 gen_exception(ctx, POWERPC_EXCP_FPU);
314 return;
315 }
316 gen_reset_fpstatus();
317 crf = tcg_const_i32(crfD(ctx->opcode));
318 gen_helper_fcmpu(cpu_env, cpu_fpr[rA(ctx->opcode)],
319 cpu_fpr[rB(ctx->opcode)], crf);
320 tcg_temp_free_i32(crf);
321 gen_helper_float_check_status(cpu_env);
322 }
323
324 /*** Floating-point move ***/
325 /* fabs */
326 /* XXX: beware that fabs never checks for NaNs nor update FPSCR */
327 static void gen_fabs(DisasContext *ctx)
328 {
329 if (unlikely(!ctx->fpu_enabled)) {
330 gen_exception(ctx, POWERPC_EXCP_FPU);
331 return;
332 }
333 tcg_gen_andi_i64(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rB(ctx->opcode)],
334 ~(1ULL << 63));
335 if (unlikely(Rc(ctx->opcode))) {
336 gen_set_cr1_from_fpscr(ctx);
337 }
338 }
339
340 /* fmr - fmr. */
341 /* XXX: beware that fmr never checks for NaNs nor update FPSCR */
342 static void gen_fmr(DisasContext *ctx)
343 {
344 if (unlikely(!ctx->fpu_enabled)) {
345 gen_exception(ctx, POWERPC_EXCP_FPU);
346 return;
347 }
348 tcg_gen_mov_i64(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rB(ctx->opcode)]);
349 if (unlikely(Rc(ctx->opcode))) {
350 gen_set_cr1_from_fpscr(ctx);
351 }
352 }
353
354 /* fnabs */
355 /* XXX: beware that fnabs never checks for NaNs nor update FPSCR */
356 static void gen_fnabs(DisasContext *ctx)
357 {
358 if (unlikely(!ctx->fpu_enabled)) {
359 gen_exception(ctx, POWERPC_EXCP_FPU);
360 return;
361 }
362 tcg_gen_ori_i64(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rB(ctx->opcode)],
363 1ULL << 63);
364 if (unlikely(Rc(ctx->opcode))) {
365 gen_set_cr1_from_fpscr(ctx);
366 }
367 }
368
369 /* fneg */
370 /* XXX: beware that fneg never checks for NaNs nor update FPSCR */
371 static void gen_fneg(DisasContext *ctx)
372 {
373 if (unlikely(!ctx->fpu_enabled)) {
374 gen_exception(ctx, POWERPC_EXCP_FPU);
375 return;
376 }
377 tcg_gen_xori_i64(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rB(ctx->opcode)],
378 1ULL << 63);
379 if (unlikely(Rc(ctx->opcode))) {
380 gen_set_cr1_from_fpscr(ctx);
381 }
382 }
383
384 /* fcpsgn: PowerPC 2.05 specification */
385 /* XXX: beware that fcpsgn never checks for NaNs nor update FPSCR */
386 static void gen_fcpsgn(DisasContext *ctx)
387 {
388 if (unlikely(!ctx->fpu_enabled)) {
389 gen_exception(ctx, POWERPC_EXCP_FPU);
390 return;
391 }
392 tcg_gen_deposit_i64(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rA(ctx->opcode)],
393 cpu_fpr[rB(ctx->opcode)], 0, 63);
394 if (unlikely(Rc(ctx->opcode))) {
395 gen_set_cr1_from_fpscr(ctx);
396 }
397 }
398
399 static void gen_fmrgew(DisasContext *ctx)
400 {
401 TCGv_i64 b0;
402 if (unlikely(!ctx->fpu_enabled)) {
403 gen_exception(ctx, POWERPC_EXCP_FPU);
404 return;
405 }
406 b0 = tcg_temp_new_i64();
407 tcg_gen_shri_i64(b0, cpu_fpr[rB(ctx->opcode)], 32);
408 tcg_gen_deposit_i64(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rA(ctx->opcode)],
409 b0, 0, 32);
410 tcg_temp_free_i64(b0);
411 }
412
413 static void gen_fmrgow(DisasContext *ctx)
414 {
415 if (unlikely(!ctx->fpu_enabled)) {
416 gen_exception(ctx, POWERPC_EXCP_FPU);
417 return;
418 }
419 tcg_gen_deposit_i64(cpu_fpr[rD(ctx->opcode)],
420 cpu_fpr[rB(ctx->opcode)],
421 cpu_fpr[rA(ctx->opcode)],
422 32, 32);
423 }
424
425 /*** Floating-Point status & ctrl register ***/
426
427 /* mcrfs */
428 static void gen_mcrfs(DisasContext *ctx)
429 {
430 TCGv tmp = tcg_temp_new();
431 TCGv_i32 tmask;
432 TCGv_i64 tnew_fpscr = tcg_temp_new_i64();
433 int bfa;
434 int nibble;
435 int shift;
436
437 if (unlikely(!ctx->fpu_enabled)) {
438 gen_exception(ctx, POWERPC_EXCP_FPU);
439 return;
440 }
441 bfa = crfS(ctx->opcode);
442 nibble = 7 - bfa;
443 shift = 4 * nibble;
444 tcg_gen_shri_tl(tmp, cpu_fpscr, shift);
445 tcg_gen_trunc_tl_i32(cpu_crf[crfD(ctx->opcode)], tmp);
446 tcg_gen_andi_i32(cpu_crf[crfD(ctx->opcode)], cpu_crf[crfD(ctx->opcode)], 0xf);
447 tcg_temp_free(tmp);
448 tcg_gen_extu_tl_i64(tnew_fpscr, cpu_fpscr);
449 /* Only the exception bits (including FX) should be cleared if read */
450 tcg_gen_andi_i64(tnew_fpscr, tnew_fpscr, ~((0xF << shift) & FP_EX_CLEAR_BITS));
451 /* FEX and VX need to be updated, so don't set fpscr directly */
452 tmask = tcg_const_i32(1 << nibble);
453 gen_helper_store_fpscr(cpu_env, tnew_fpscr, tmask);
454 tcg_temp_free_i32(tmask);
455 tcg_temp_free_i64(tnew_fpscr);
456 }
457
458 /* mffs */
459 static void gen_mffs(DisasContext *ctx)
460 {
461 if (unlikely(!ctx->fpu_enabled)) {
462 gen_exception(ctx, POWERPC_EXCP_FPU);
463 return;
464 }
465 gen_reset_fpstatus();
466 tcg_gen_extu_tl_i64(cpu_fpr[rD(ctx->opcode)], cpu_fpscr);
467 if (unlikely(Rc(ctx->opcode))) {
468 gen_set_cr1_from_fpscr(ctx);
469 }
470 }
471
472 /* mtfsb0 */
473 static void gen_mtfsb0(DisasContext *ctx)
474 {
475 uint8_t crb;
476
477 if (unlikely(!ctx->fpu_enabled)) {
478 gen_exception(ctx, POWERPC_EXCP_FPU);
479 return;
480 }
481 crb = 31 - crbD(ctx->opcode);
482 gen_reset_fpstatus();
483 if (likely(crb != FPSCR_FEX && crb != FPSCR_VX)) {
484 TCGv_i32 t0;
485 t0 = tcg_const_i32(crb);
486 gen_helper_fpscr_clrbit(cpu_env, t0);
487 tcg_temp_free_i32(t0);
488 }
489 if (unlikely(Rc(ctx->opcode) != 0)) {
490 tcg_gen_trunc_tl_i32(cpu_crf[1], cpu_fpscr);
491 tcg_gen_shri_i32(cpu_crf[1], cpu_crf[1], FPSCR_OX);
492 }
493 }
494
495 /* mtfsb1 */
496 static void gen_mtfsb1(DisasContext *ctx)
497 {
498 uint8_t crb;
499
500 if (unlikely(!ctx->fpu_enabled)) {
501 gen_exception(ctx, POWERPC_EXCP_FPU);
502 return;
503 }
504 crb = 31 - crbD(ctx->opcode);
505 gen_reset_fpstatus();
506 /* XXX: we pretend we can only do IEEE floating-point computations */
507 if (likely(crb != FPSCR_FEX && crb != FPSCR_VX && crb != FPSCR_NI)) {
508 TCGv_i32 t0;
509 t0 = tcg_const_i32(crb);
510 gen_helper_fpscr_setbit(cpu_env, t0);
511 tcg_temp_free_i32(t0);
512 }
513 if (unlikely(Rc(ctx->opcode) != 0)) {
514 tcg_gen_trunc_tl_i32(cpu_crf[1], cpu_fpscr);
515 tcg_gen_shri_i32(cpu_crf[1], cpu_crf[1], FPSCR_OX);
516 }
517 /* We can raise a differed exception */
518 gen_helper_float_check_status(cpu_env);
519 }
520
521 /* mtfsf */
522 static void gen_mtfsf(DisasContext *ctx)
523 {
524 TCGv_i32 t0;
525 int flm, l, w;
526
527 if (unlikely(!ctx->fpu_enabled)) {
528 gen_exception(ctx, POWERPC_EXCP_FPU);
529 return;
530 }
531 flm = FPFLM(ctx->opcode);
532 l = FPL(ctx->opcode);
533 w = FPW(ctx->opcode);
534 if (unlikely(w & !(ctx->insns_flags2 & PPC2_ISA205))) {
535 gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL);
536 return;
537 }
538 gen_reset_fpstatus();
539 if (l) {
540 t0 = tcg_const_i32((ctx->insns_flags2 & PPC2_ISA205) ? 0xffff : 0xff);
541 } else {
542 t0 = tcg_const_i32(flm << (w * 8));
543 }
544 gen_helper_store_fpscr(cpu_env, cpu_fpr[rB(ctx->opcode)], t0);
545 tcg_temp_free_i32(t0);
546 if (unlikely(Rc(ctx->opcode) != 0)) {
547 tcg_gen_trunc_tl_i32(cpu_crf[1], cpu_fpscr);
548 tcg_gen_shri_i32(cpu_crf[1], cpu_crf[1], FPSCR_OX);
549 }
550 /* We can raise a differed exception */
551 gen_helper_float_check_status(cpu_env);
552 }
553
554 /* mtfsfi */
555 static void gen_mtfsfi(DisasContext *ctx)
556 {
557 int bf, sh, w;
558 TCGv_i64 t0;
559 TCGv_i32 t1;
560
561 if (unlikely(!ctx->fpu_enabled)) {
562 gen_exception(ctx, POWERPC_EXCP_FPU);
563 return;
564 }
565 w = FPW(ctx->opcode);
566 bf = FPBF(ctx->opcode);
567 if (unlikely(w & !(ctx->insns_flags2 & PPC2_ISA205))) {
568 gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL);
569 return;
570 }
571 sh = (8 * w) + 7 - bf;
572 gen_reset_fpstatus();
573 t0 = tcg_const_i64(((uint64_t)FPIMM(ctx->opcode)) << (4 * sh));
574 t1 = tcg_const_i32(1 << sh);
575 gen_helper_store_fpscr(cpu_env, t0, t1);
576 tcg_temp_free_i64(t0);
577 tcg_temp_free_i32(t1);
578 if (unlikely(Rc(ctx->opcode) != 0)) {
579 tcg_gen_trunc_tl_i32(cpu_crf[1], cpu_fpscr);
580 tcg_gen_shri_i32(cpu_crf[1], cpu_crf[1], FPSCR_OX);
581 }
582 /* We can raise a differed exception */
583 gen_helper_float_check_status(cpu_env);
584 }
585
586 /*** Floating-point load ***/
587 #define GEN_LDF(name, ldop, opc, type) \
588 static void glue(gen_, name)(DisasContext *ctx) \
589 { \
590 TCGv EA; \
591 if (unlikely(!ctx->fpu_enabled)) { \
592 gen_exception(ctx, POWERPC_EXCP_FPU); \
593 return; \
594 } \
595 gen_set_access_type(ctx, ACCESS_FLOAT); \
596 EA = tcg_temp_new(); \
597 gen_addr_imm_index(ctx, EA, 0); \
598 gen_qemu_##ldop(ctx, cpu_fpr[rD(ctx->opcode)], EA); \
599 tcg_temp_free(EA); \
600 }
601
602 #define GEN_LDUF(name, ldop, opc, type) \
603 static void glue(gen_, name##u)(DisasContext *ctx) \
604 { \
605 TCGv EA; \
606 if (unlikely(!ctx->fpu_enabled)) { \
607 gen_exception(ctx, POWERPC_EXCP_FPU); \
608 return; \
609 } \
610 if (unlikely(rA(ctx->opcode) == 0)) { \
611 gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL); \
612 return; \
613 } \
614 gen_set_access_type(ctx, ACCESS_FLOAT); \
615 EA = tcg_temp_new(); \
616 gen_addr_imm_index(ctx, EA, 0); \
617 gen_qemu_##ldop(ctx, cpu_fpr[rD(ctx->opcode)], EA); \
618 tcg_gen_mov_tl(cpu_gpr[rA(ctx->opcode)], EA); \
619 tcg_temp_free(EA); \
620 }
621
622 #define GEN_LDUXF(name, ldop, opc, type) \
623 static void glue(gen_, name##ux)(DisasContext *ctx) \
624 { \
625 TCGv EA; \
626 if (unlikely(!ctx->fpu_enabled)) { \
627 gen_exception(ctx, POWERPC_EXCP_FPU); \
628 return; \
629 } \
630 if (unlikely(rA(ctx->opcode) == 0)) { \
631 gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL); \
632 return; \
633 } \
634 gen_set_access_type(ctx, ACCESS_FLOAT); \
635 EA = tcg_temp_new(); \
636 gen_addr_reg_index(ctx, EA); \
637 gen_qemu_##ldop(ctx, cpu_fpr[rD(ctx->opcode)], EA); \
638 tcg_gen_mov_tl(cpu_gpr[rA(ctx->opcode)], EA); \
639 tcg_temp_free(EA); \
640 }
641
642 #define GEN_LDXF(name, ldop, opc2, opc3, type) \
643 static void glue(gen_, name##x)(DisasContext *ctx) \
644 { \
645 TCGv EA; \
646 if (unlikely(!ctx->fpu_enabled)) { \
647 gen_exception(ctx, POWERPC_EXCP_FPU); \
648 return; \
649 } \
650 gen_set_access_type(ctx, ACCESS_FLOAT); \
651 EA = tcg_temp_new(); \
652 gen_addr_reg_index(ctx, EA); \
653 gen_qemu_##ldop(ctx, cpu_fpr[rD(ctx->opcode)], EA); \
654 tcg_temp_free(EA); \
655 }
656
657 #define GEN_LDFS(name, ldop, op, type) \
658 GEN_LDF(name, ldop, op | 0x20, type); \
659 GEN_LDUF(name, ldop, op | 0x21, type); \
660 GEN_LDUXF(name, ldop, op | 0x01, type); \
661 GEN_LDXF(name, ldop, 0x17, op | 0x00, type)
662
663 static inline void gen_qemu_ld32fs(DisasContext *ctx, TCGv_i64 arg1, TCGv arg2)
664 {
665 TCGv t0 = tcg_temp_new();
666 TCGv_i32 t1 = tcg_temp_new_i32();
667 gen_qemu_ld32u(ctx, t0, arg2);
668 tcg_gen_trunc_tl_i32(t1, t0);
669 tcg_temp_free(t0);
670 gen_helper_float32_to_float64(arg1, cpu_env, t1);
671 tcg_temp_free_i32(t1);
672 }
673
674 /* lfd lfdu lfdux lfdx */
675 GEN_LDFS(lfd, ld64_i64, 0x12, PPC_FLOAT);
676 /* lfs lfsu lfsux lfsx */
677 GEN_LDFS(lfs, ld32fs, 0x10, PPC_FLOAT);
678
679 /* lfdp */
680 static void gen_lfdp(DisasContext *ctx)
681 {
682 TCGv EA;
683 if (unlikely(!ctx->fpu_enabled)) {
684 gen_exception(ctx, POWERPC_EXCP_FPU);
685 return;
686 }
687 gen_set_access_type(ctx, ACCESS_FLOAT);
688 EA = tcg_temp_new();
689 gen_addr_imm_index(ctx, EA, 0);
690 /* We only need to swap high and low halves. gen_qemu_ld64_i64 does
691 necessary 64-bit byteswap already. */
692 if (unlikely(ctx->le_mode)) {
693 gen_qemu_ld64_i64(ctx, cpu_fpr[rD(ctx->opcode) + 1], EA);
694 tcg_gen_addi_tl(EA, EA, 8);
695 gen_qemu_ld64_i64(ctx, cpu_fpr[rD(ctx->opcode)], EA);
696 } else {
697 gen_qemu_ld64_i64(ctx, cpu_fpr[rD(ctx->opcode)], EA);
698 tcg_gen_addi_tl(EA, EA, 8);
699 gen_qemu_ld64_i64(ctx, cpu_fpr[rD(ctx->opcode) + 1], EA);
700 }
701 tcg_temp_free(EA);
702 }
703
704 /* lfdpx */
705 static void gen_lfdpx(DisasContext *ctx)
706 {
707 TCGv EA;
708 if (unlikely(!ctx->fpu_enabled)) {
709 gen_exception(ctx, POWERPC_EXCP_FPU);
710 return;
711 }
712 gen_set_access_type(ctx, ACCESS_FLOAT);
713 EA = tcg_temp_new();
714 gen_addr_reg_index(ctx, EA);
715 /* We only need to swap high and low halves. gen_qemu_ld64_i64 does
716 necessary 64-bit byteswap already. */
717 if (unlikely(ctx->le_mode)) {
718 gen_qemu_ld64_i64(ctx, cpu_fpr[rD(ctx->opcode) + 1], EA);
719 tcg_gen_addi_tl(EA, EA, 8);
720 gen_qemu_ld64_i64(ctx, cpu_fpr[rD(ctx->opcode)], EA);
721 } else {
722 gen_qemu_ld64_i64(ctx, cpu_fpr[rD(ctx->opcode)], EA);
723 tcg_gen_addi_tl(EA, EA, 8);
724 gen_qemu_ld64_i64(ctx, cpu_fpr[rD(ctx->opcode) + 1], EA);
725 }
726 tcg_temp_free(EA);
727 }
728
729 /* lfiwax */
730 static void gen_lfiwax(DisasContext *ctx)
731 {
732 TCGv EA;
733 TCGv t0;
734 if (unlikely(!ctx->fpu_enabled)) {
735 gen_exception(ctx, POWERPC_EXCP_FPU);
736 return;
737 }
738 gen_set_access_type(ctx, ACCESS_FLOAT);
739 EA = tcg_temp_new();
740 t0 = tcg_temp_new();
741 gen_addr_reg_index(ctx, EA);
742 gen_qemu_ld32s(ctx, t0, EA);
743 tcg_gen_ext_tl_i64(cpu_fpr[rD(ctx->opcode)], t0);
744 tcg_temp_free(EA);
745 tcg_temp_free(t0);
746 }
747
748 /* lfiwzx */
749 static void gen_lfiwzx(DisasContext *ctx)
750 {
751 TCGv EA;
752 if (unlikely(!ctx->fpu_enabled)) {
753 gen_exception(ctx, POWERPC_EXCP_FPU);
754 return;
755 }
756 gen_set_access_type(ctx, ACCESS_FLOAT);
757 EA = tcg_temp_new();
758 gen_addr_reg_index(ctx, EA);
759 gen_qemu_ld32u_i64(ctx, cpu_fpr[rD(ctx->opcode)], EA);
760 tcg_temp_free(EA);
761 }
762 /*** Floating-point store ***/
763 #define GEN_STF(name, stop, opc, type) \
764 static void glue(gen_, name)(DisasContext *ctx) \
765 { \
766 TCGv EA; \
767 if (unlikely(!ctx->fpu_enabled)) { \
768 gen_exception(ctx, POWERPC_EXCP_FPU); \
769 return; \
770 } \
771 gen_set_access_type(ctx, ACCESS_FLOAT); \
772 EA = tcg_temp_new(); \
773 gen_addr_imm_index(ctx, EA, 0); \
774 gen_qemu_##stop(ctx, cpu_fpr[rS(ctx->opcode)], EA); \
775 tcg_temp_free(EA); \
776 }
777
778 #define GEN_STUF(name, stop, opc, type) \
779 static void glue(gen_, name##u)(DisasContext *ctx) \
780 { \
781 TCGv EA; \
782 if (unlikely(!ctx->fpu_enabled)) { \
783 gen_exception(ctx, POWERPC_EXCP_FPU); \
784 return; \
785 } \
786 if (unlikely(rA(ctx->opcode) == 0)) { \
787 gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL); \
788 return; \
789 } \
790 gen_set_access_type(ctx, ACCESS_FLOAT); \
791 EA = tcg_temp_new(); \
792 gen_addr_imm_index(ctx, EA, 0); \
793 gen_qemu_##stop(ctx, cpu_fpr[rS(ctx->opcode)], EA); \
794 tcg_gen_mov_tl(cpu_gpr[rA(ctx->opcode)], EA); \
795 tcg_temp_free(EA); \
796 }
797
798 #define GEN_STUXF(name, stop, opc, type) \
799 static void glue(gen_, name##ux)(DisasContext *ctx) \
800 { \
801 TCGv EA; \
802 if (unlikely(!ctx->fpu_enabled)) { \
803 gen_exception(ctx, POWERPC_EXCP_FPU); \
804 return; \
805 } \
806 if (unlikely(rA(ctx->opcode) == 0)) { \
807 gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL); \
808 return; \
809 } \
810 gen_set_access_type(ctx, ACCESS_FLOAT); \
811 EA = tcg_temp_new(); \
812 gen_addr_reg_index(ctx, EA); \
813 gen_qemu_##stop(ctx, cpu_fpr[rS(ctx->opcode)], EA); \
814 tcg_gen_mov_tl(cpu_gpr[rA(ctx->opcode)], EA); \
815 tcg_temp_free(EA); \
816 }
817
818 #define GEN_STXF(name, stop, opc2, opc3, type) \
819 static void glue(gen_, name##x)(DisasContext *ctx) \
820 { \
821 TCGv EA; \
822 if (unlikely(!ctx->fpu_enabled)) { \
823 gen_exception(ctx, POWERPC_EXCP_FPU); \
824 return; \
825 } \
826 gen_set_access_type(ctx, ACCESS_FLOAT); \
827 EA = tcg_temp_new(); \
828 gen_addr_reg_index(ctx, EA); \
829 gen_qemu_##stop(ctx, cpu_fpr[rS(ctx->opcode)], EA); \
830 tcg_temp_free(EA); \
831 }
832
833 #define GEN_STFS(name, stop, op, type) \
834 GEN_STF(name, stop, op | 0x20, type); \
835 GEN_STUF(name, stop, op | 0x21, type); \
836 GEN_STUXF(name, stop, op | 0x01, type); \
837 GEN_STXF(name, stop, 0x17, op | 0x00, type)
838
839 static inline void gen_qemu_st32fs(DisasContext *ctx, TCGv_i64 arg1, TCGv arg2)
840 {
841 TCGv_i32 t0 = tcg_temp_new_i32();
842 TCGv t1 = tcg_temp_new();
843 gen_helper_float64_to_float32(t0, cpu_env, arg1);
844 tcg_gen_extu_i32_tl(t1, t0);
845 tcg_temp_free_i32(t0);
846 gen_qemu_st32(ctx, t1, arg2);
847 tcg_temp_free(t1);
848 }
849
850 /* stfd stfdu stfdux stfdx */
851 GEN_STFS(stfd, st64_i64, 0x16, PPC_FLOAT);
852 /* stfs stfsu stfsux stfsx */
853 GEN_STFS(stfs, st32fs, 0x14, PPC_FLOAT);
854
855 /* stfdp */
856 static void gen_stfdp(DisasContext *ctx)
857 {
858 TCGv EA;
859 if (unlikely(!ctx->fpu_enabled)) {
860 gen_exception(ctx, POWERPC_EXCP_FPU);
861 return;
862 }
863 gen_set_access_type(ctx, ACCESS_FLOAT);
864 EA = tcg_temp_new();
865 gen_addr_imm_index(ctx, EA, 0);
866 /* We only need to swap high and low halves. gen_qemu_st64_i64 does
867 necessary 64-bit byteswap already. */
868 if (unlikely(ctx->le_mode)) {
869 gen_qemu_st64_i64(ctx, cpu_fpr[rD(ctx->opcode) + 1], EA);
870 tcg_gen_addi_tl(EA, EA, 8);
871 gen_qemu_st64_i64(ctx, cpu_fpr[rD(ctx->opcode)], EA);
872 } else {
873 gen_qemu_st64_i64(ctx, cpu_fpr[rD(ctx->opcode)], EA);
874 tcg_gen_addi_tl(EA, EA, 8);
875 gen_qemu_st64_i64(ctx, cpu_fpr[rD(ctx->opcode) + 1], EA);
876 }
877 tcg_temp_free(EA);
878 }
879
880 /* stfdpx */
881 static void gen_stfdpx(DisasContext *ctx)
882 {
883 TCGv EA;
884 if (unlikely(!ctx->fpu_enabled)) {
885 gen_exception(ctx, POWERPC_EXCP_FPU);
886 return;
887 }
888 gen_set_access_type(ctx, ACCESS_FLOAT);
889 EA = tcg_temp_new();
890 gen_addr_reg_index(ctx, EA);
891 /* We only need to swap high and low halves. gen_qemu_st64_i64 does
892 necessary 64-bit byteswap already. */
893 if (unlikely(ctx->le_mode)) {
894 gen_qemu_st64_i64(ctx, cpu_fpr[rD(ctx->opcode) + 1], EA);
895 tcg_gen_addi_tl(EA, EA, 8);
896 gen_qemu_st64_i64(ctx, cpu_fpr[rD(ctx->opcode)], EA);
897 } else {
898 gen_qemu_st64_i64(ctx, cpu_fpr[rD(ctx->opcode)], EA);
899 tcg_gen_addi_tl(EA, EA, 8);
900 gen_qemu_st64_i64(ctx, cpu_fpr[rD(ctx->opcode) + 1], EA);
901 }
902 tcg_temp_free(EA);
903 }
904
905 /* Optional: */
906 static inline void gen_qemu_st32fiw(DisasContext *ctx, TCGv_i64 arg1, TCGv arg2)
907 {
908 TCGv t0 = tcg_temp_new();
909 tcg_gen_trunc_i64_tl(t0, arg1),
910 gen_qemu_st32(ctx, t0, arg2);
911 tcg_temp_free(t0);
912 }
913 /* stfiwx */
914 GEN_STXF(stfiw, st32fiw, 0x17, 0x1E, PPC_FLOAT_STFIWX);
915
916 /* POWER2 specific instructions */
917 /* Quad manipulation (load/store two floats at a time) */
918
919 /* lfq */
920 static void gen_lfq(DisasContext *ctx)
921 {
922 int rd = rD(ctx->opcode);
923 TCGv t0;
924 gen_set_access_type(ctx, ACCESS_FLOAT);
925 t0 = tcg_temp_new();
926 gen_addr_imm_index(ctx, t0, 0);
927 gen_qemu_ld64_i64(ctx, cpu_fpr[rd], t0);
928 gen_addr_add(ctx, t0, t0, 8);
929 gen_qemu_ld64_i64(ctx, cpu_fpr[(rd + 1) % 32], t0);
930 tcg_temp_free(t0);
931 }
932
933 /* lfqu */
934 static void gen_lfqu(DisasContext *ctx)
935 {
936 int ra = rA(ctx->opcode);
937 int rd = rD(ctx->opcode);
938 TCGv t0, t1;
939 gen_set_access_type(ctx, ACCESS_FLOAT);
940 t0 = tcg_temp_new();
941 t1 = tcg_temp_new();
942 gen_addr_imm_index(ctx, t0, 0);
943 gen_qemu_ld64_i64(ctx, cpu_fpr[rd], t0);
944 gen_addr_add(ctx, t1, t0, 8);
945 gen_qemu_ld64_i64(ctx, cpu_fpr[(rd + 1) % 32], t1);
946 if (ra != 0)
947 tcg_gen_mov_tl(cpu_gpr[ra], t0);
948 tcg_temp_free(t0);
949 tcg_temp_free(t1);
950 }
951
952 /* lfqux */
953 static void gen_lfqux(DisasContext *ctx)
954 {
955 int ra = rA(ctx->opcode);
956 int rd = rD(ctx->opcode);
957 gen_set_access_type(ctx, ACCESS_FLOAT);
958 TCGv t0, t1;
959 t0 = tcg_temp_new();
960 gen_addr_reg_index(ctx, t0);
961 gen_qemu_ld64_i64(ctx, cpu_fpr[rd], t0);
962 t1 = tcg_temp_new();
963 gen_addr_add(ctx, t1, t0, 8);
964 gen_qemu_ld64_i64(ctx, cpu_fpr[(rd + 1) % 32], t1);
965 tcg_temp_free(t1);
966 if (ra != 0)
967 tcg_gen_mov_tl(cpu_gpr[ra], t0);
968 tcg_temp_free(t0);
969 }
970
971 /* lfqx */
972 static void gen_lfqx(DisasContext *ctx)
973 {
974 int rd = rD(ctx->opcode);
975 TCGv t0;
976 gen_set_access_type(ctx, ACCESS_FLOAT);
977 t0 = tcg_temp_new();
978 gen_addr_reg_index(ctx, t0);
979 gen_qemu_ld64_i64(ctx, cpu_fpr[rd], t0);
980 gen_addr_add(ctx, t0, t0, 8);
981 gen_qemu_ld64_i64(ctx, cpu_fpr[(rd + 1) % 32], t0);
982 tcg_temp_free(t0);
983 }
984
985 /* stfq */
986 static void gen_stfq(DisasContext *ctx)
987 {
988 int rd = rD(ctx->opcode);
989 TCGv t0;
990 gen_set_access_type(ctx, ACCESS_FLOAT);
991 t0 = tcg_temp_new();
992 gen_addr_imm_index(ctx, t0, 0);
993 gen_qemu_st64_i64(ctx, cpu_fpr[rd], t0);
994 gen_addr_add(ctx, t0, t0, 8);
995 gen_qemu_st64_i64(ctx, cpu_fpr[(rd + 1) % 32], t0);
996 tcg_temp_free(t0);
997 }
998
999 /* stfqu */
1000 static void gen_stfqu(DisasContext *ctx)
1001 {
1002 int ra = rA(ctx->opcode);
1003 int rd = rD(ctx->opcode);
1004 TCGv t0, t1;
1005 gen_set_access_type(ctx, ACCESS_FLOAT);
1006 t0 = tcg_temp_new();
1007 gen_addr_imm_index(ctx, t0, 0);
1008 gen_qemu_st64_i64(ctx, cpu_fpr[rd], t0);
1009 t1 = tcg_temp_new();
1010 gen_addr_add(ctx, t1, t0, 8);
1011 gen_qemu_st64_i64(ctx, cpu_fpr[(rd + 1) % 32], t1);
1012 tcg_temp_free(t1);
1013 if (ra != 0)
1014 tcg_gen_mov_tl(cpu_gpr[ra], t0);
1015 tcg_temp_free(t0);
1016 }
1017
1018 /* stfqux */
1019 static void gen_stfqux(DisasContext *ctx)
1020 {
1021 int ra = rA(ctx->opcode);
1022 int rd = rD(ctx->opcode);
1023 TCGv t0, t1;
1024 gen_set_access_type(ctx, ACCESS_FLOAT);
1025 t0 = tcg_temp_new();
1026 gen_addr_reg_index(ctx, t0);
1027 gen_qemu_st64_i64(ctx, cpu_fpr[rd], t0);
1028 t1 = tcg_temp_new();
1029 gen_addr_add(ctx, t1, t0, 8);
1030 gen_qemu_st64_i64(ctx, cpu_fpr[(rd + 1) % 32], t1);
1031 tcg_temp_free(t1);
1032 if (ra != 0)
1033 tcg_gen_mov_tl(cpu_gpr[ra], t0);
1034 tcg_temp_free(t0);
1035 }
1036
1037 /* stfqx */
1038 static void gen_stfqx(DisasContext *ctx)
1039 {
1040 int rd = rD(ctx->opcode);
1041 TCGv t0;
1042 gen_set_access_type(ctx, ACCESS_FLOAT);
1043 t0 = tcg_temp_new();
1044 gen_addr_reg_index(ctx, t0);
1045 gen_qemu_st64_i64(ctx, cpu_fpr[rd], t0);
1046 gen_addr_add(ctx, t0, t0, 8);
1047 gen_qemu_st64_i64(ctx, cpu_fpr[(rd + 1) % 32], t0);
1048 tcg_temp_free(t0);
1049 }
1050
1051 #undef _GEN_FLOAT_ACB
1052 #undef GEN_FLOAT_ACB
1053 #undef _GEN_FLOAT_AB
1054 #undef GEN_FLOAT_AB
1055 #undef _GEN_FLOAT_AC
1056 #undef GEN_FLOAT_AC
1057 #undef GEN_FLOAT_B
1058 #undef GEN_FLOAT_BS
1059
1060 #undef GEN_LDF
1061 #undef GEN_LDUF
1062 #undef GEN_LDUXF
1063 #undef GEN_LDXF
1064 #undef GEN_LDFS
1065
1066 #undef GEN_STF
1067 #undef GEN_STUF
1068 #undef GEN_STUXF
1069 #undef GEN_STXF
1070 #undef GEN_STFS
AR7 emulation for QEMU