2 * Helpers for HPPA instructions.
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
20 #include "qemu/osdep.h"
22 #include "exec/exec-all.h"
23 #include "exec/helper-proto.h"
24 #include "exec/cpu_ldst.h"
26 void QEMU_NORETURN HELPER(excp)(CPUHPPAState *env, int excp)
28 HPPACPU *cpu = hppa_env_get_cpu(env);
29 CPUState *cs = CPU(cpu);
31 cs->exception_index = excp;
35 static void QEMU_NORETURN dynexcp(CPUHPPAState *env, int excp, uintptr_t ra)
37 HPPACPU *cpu = hppa_env_get_cpu(env);
38 CPUState *cs = CPU(cpu);
40 cs->exception_index = excp;
41 cpu_loop_exit_restore(cs, ra);
44 void HELPER(tsv)(CPUHPPAState *env, target_ulong cond)
46 if (unlikely((target_long)cond < 0)) {
47 dynexcp(env, EXCP_SIGFPE, GETPC());
51 void HELPER(tcond)(CPUHPPAState *env, target_ulong cond)
54 dynexcp(env, EXCP_SIGFPE, GETPC());
58 static void atomic_store_3(CPUHPPAState *env, target_ulong addr, uint32_t val,
59 uint32_t mask, uintptr_t ra)
61 uint32_t old, new, cmp;
63 #ifdef CONFIG_USER_ONLY
64 uint32_t *haddr = g2h(addr - 1);
67 new = (old & ~mask) | (val & mask);
68 cmp = atomic_cmpxchg(haddr, old, new);
75 #error "Not implemented."
79 void HELPER(stby_b)(CPUHPPAState *env, target_ulong addr, target_ulong val)
81 uintptr_t ra = GETPC();
85 cpu_stb_data_ra(env, addr, val, ra);
88 cpu_stw_data_ra(env, addr, val, ra);
91 /* The 3 byte store must appear atomic. */
93 atomic_store_3(env, addr, val, 0x00ffffffu, ra);
95 cpu_stb_data_ra(env, addr, val >> 16, ra);
96 cpu_stw_data_ra(env, addr + 1, val, ra);
100 cpu_stl_data_ra(env, addr, val, ra);
105 void HELPER(stby_e)(CPUHPPAState *env, target_ulong addr, target_ulong val)
107 uintptr_t ra = GETPC();
111 /* The 3 byte store must appear atomic. */
113 atomic_store_3(env, addr - 3, val, 0xffffff00u, ra);
115 cpu_stw_data_ra(env, addr - 3, val >> 16, ra);
116 cpu_stb_data_ra(env, addr - 1, val >> 8, ra);
120 cpu_stw_data_ra(env, addr - 2, val >> 16, ra);
123 cpu_stb_data_ra(env, addr - 1, val >> 24, ra);
126 /* Nothing is stored, but protection is checked and the
127 cacheline is marked dirty. */
128 #ifndef CONFIG_USER_ONLY
129 probe_write(env, addr, cpu_mmu_index(env, 0), ra);
135 target_ulong HELPER(probe_r)(target_ulong addr)
137 return page_check_range(addr, 1, PAGE_READ);
140 target_ulong HELPER(probe_w)(target_ulong addr)
142 return page_check_range(addr, 1, PAGE_WRITE);
145 void HELPER(loaded_fr0)(CPUHPPAState *env)
147 uint32_t shadow = env->fr[0] >> 32;
150 env->fr0_shadow = shadow;
152 switch (extract32(shadow, 9, 2)) {
154 rm = float_round_nearest_even;
157 rm = float_round_to_zero;
163 rm = float_round_down;
166 set_float_rounding_mode(rm, &env->fp_status);
168 d = extract32(shadow, 5, 1);
169 set_flush_to_zero(d, &env->fp_status);
170 set_flush_inputs_to_zero(d, &env->fp_status);
173 void cpu_hppa_loaded_fr0(CPUHPPAState *env)
175 helper_loaded_fr0(env);
178 #define CONVERT_BIT(X, SRC, DST) \
180 ? (X) / ((SRC) / (DST)) & (DST) \
181 : ((X) & (SRC)) * ((DST) / (SRC)))
183 static void update_fr0_op(CPUHPPAState *env, uintptr_t ra)
185 uint32_t soft_exp = get_float_exception_flags(&env->fp_status);
186 uint32_t hard_exp = 0;
187 uint32_t shadow = env->fr0_shadow;
189 if (likely(soft_exp == 0)) {
190 env->fr[0] = (uint64_t)shadow << 32;
193 set_float_exception_flags(0, &env->fp_status);
195 hard_exp |= CONVERT_BIT(soft_exp, float_flag_inexact, 1u << 0);
196 hard_exp |= CONVERT_BIT(soft_exp, float_flag_underflow, 1u << 1);
197 hard_exp |= CONVERT_BIT(soft_exp, float_flag_overflow, 1u << 2);
198 hard_exp |= CONVERT_BIT(soft_exp, float_flag_divbyzero, 1u << 3);
199 hard_exp |= CONVERT_BIT(soft_exp, float_flag_invalid, 1u << 4);
200 shadow |= hard_exp << (32 - 5);
201 env->fr0_shadow = shadow;
202 env->fr[0] = (uint64_t)shadow << 32;
204 if (hard_exp & shadow) {
205 dynexcp(env, EXCP_SIGFPE, ra);
209 float32 HELPER(fsqrt_s)(CPUHPPAState *env, float32 arg)
211 float32 ret = float32_sqrt(arg, &env->fp_status);
212 update_fr0_op(env, GETPC());
216 float32 HELPER(frnd_s)(CPUHPPAState *env, float32 arg)
218 float32 ret = float32_round_to_int(arg, &env->fp_status);
219 update_fr0_op(env, GETPC());
223 float32 HELPER(fadd_s)(CPUHPPAState *env, float32 a, float32 b)
225 float32 ret = float32_add(a, b, &env->fp_status);
226 update_fr0_op(env, GETPC());
230 float32 HELPER(fsub_s)(CPUHPPAState *env, float32 a, float32 b)
232 float32 ret = float32_sub(a, b, &env->fp_status);
233 update_fr0_op(env, GETPC());
237 float32 HELPER(fmpy_s)(CPUHPPAState *env, float32 a, float32 b)
239 float32 ret = float32_mul(a, b, &env->fp_status);
240 update_fr0_op(env, GETPC());
244 float32 HELPER(fdiv_s)(CPUHPPAState *env, float32 a, float32 b)
246 float32 ret = float32_div(a, b, &env->fp_status);
247 update_fr0_op(env, GETPC());
251 float64 HELPER(fsqrt_d)(CPUHPPAState *env, float64 arg)
253 float64 ret = float64_sqrt(arg, &env->fp_status);
254 update_fr0_op(env, GETPC());
258 float64 HELPER(frnd_d)(CPUHPPAState *env, float64 arg)
260 float64 ret = float64_round_to_int(arg, &env->fp_status);
261 update_fr0_op(env, GETPC());
265 float64 HELPER(fadd_d)(CPUHPPAState *env, float64 a, float64 b)
267 float64 ret = float64_add(a, b, &env->fp_status);
268 update_fr0_op(env, GETPC());
272 float64 HELPER(fsub_d)(CPUHPPAState *env, float64 a, float64 b)
274 float64 ret = float64_sub(a, b, &env->fp_status);
275 update_fr0_op(env, GETPC());
279 float64 HELPER(fmpy_d)(CPUHPPAState *env, float64 a, float64 b)
281 float64 ret = float64_mul(a, b, &env->fp_status);
282 update_fr0_op(env, GETPC());
286 float64 HELPER(fdiv_d)(CPUHPPAState *env, float64 a, float64 b)
288 float64 ret = float64_div(a, b, &env->fp_status);
289 update_fr0_op(env, GETPC());
293 float64 HELPER(fcnv_s_d)(CPUHPPAState *env, float32 arg)
295 float64 ret = float32_to_float64(arg, &env->fp_status);
296 ret = float64_maybe_silence_nan(ret, &env->fp_status);
297 update_fr0_op(env, GETPC());
301 float32 HELPER(fcnv_d_s)(CPUHPPAState *env, float64 arg)
303 float32 ret = float64_to_float32(arg, &env->fp_status);
304 ret = float32_maybe_silence_nan(ret, &env->fp_status);
305 update_fr0_op(env, GETPC());
309 float32 HELPER(fcnv_w_s)(CPUHPPAState *env, int32_t arg)
311 float32 ret = int32_to_float32(arg, &env->fp_status);
312 update_fr0_op(env, GETPC());
316 float32 HELPER(fcnv_dw_s)(CPUHPPAState *env, int64_t arg)
318 float32 ret = int64_to_float32(arg, &env->fp_status);
319 update_fr0_op(env, GETPC());
323 float64 HELPER(fcnv_w_d)(CPUHPPAState *env, int32_t arg)
325 float64 ret = int32_to_float64(arg, &env->fp_status);
326 update_fr0_op(env, GETPC());
330 float64 HELPER(fcnv_dw_d)(CPUHPPAState *env, int64_t arg)
332 float64 ret = int64_to_float64(arg, &env->fp_status);
333 update_fr0_op(env, GETPC());
337 int32_t HELPER(fcnv_s_w)(CPUHPPAState *env, float32 arg)
339 int32_t ret = float32_to_int32(arg, &env->fp_status);
340 update_fr0_op(env, GETPC());
344 int32_t HELPER(fcnv_d_w)(CPUHPPAState *env, float64 arg)
346 int32_t ret = float64_to_int32(arg, &env->fp_status);
347 update_fr0_op(env, GETPC());
351 int64_t HELPER(fcnv_s_dw)(CPUHPPAState *env, float32 arg)
353 int64_t ret = float32_to_int64(arg, &env->fp_status);
354 update_fr0_op(env, GETPC());
358 int64_t HELPER(fcnv_d_dw)(CPUHPPAState *env, float64 arg)
360 int64_t ret = float64_to_int64(arg, &env->fp_status);
361 update_fr0_op(env, GETPC());
365 int32_t HELPER(fcnv_t_s_w)(CPUHPPAState *env, float32 arg)
367 int32_t ret = float32_to_int32_round_to_zero(arg, &env->fp_status);
368 update_fr0_op(env, GETPC());
372 int32_t HELPER(fcnv_t_d_w)(CPUHPPAState *env, float64 arg)
374 int32_t ret = float64_to_int32_round_to_zero(arg, &env->fp_status);
375 update_fr0_op(env, GETPC());
379 int64_t HELPER(fcnv_t_s_dw)(CPUHPPAState *env, float32 arg)
381 int64_t ret = float32_to_int64_round_to_zero(arg, &env->fp_status);
382 update_fr0_op(env, GETPC());
386 int64_t HELPER(fcnv_t_d_dw)(CPUHPPAState *env, float64 arg)
388 int64_t ret = float64_to_int64_round_to_zero(arg, &env->fp_status);
389 update_fr0_op(env, GETPC());
393 float32 HELPER(fcnv_uw_s)(CPUHPPAState *env, uint32_t arg)
395 float32 ret = uint32_to_float32(arg, &env->fp_status);
396 update_fr0_op(env, GETPC());
400 float32 HELPER(fcnv_udw_s)(CPUHPPAState *env, uint64_t arg)
402 float32 ret = uint64_to_float32(arg, &env->fp_status);
403 update_fr0_op(env, GETPC());
407 float64 HELPER(fcnv_uw_d)(CPUHPPAState *env, uint32_t arg)
409 float64 ret = uint32_to_float64(arg, &env->fp_status);
410 update_fr0_op(env, GETPC());
414 float64 HELPER(fcnv_udw_d)(CPUHPPAState *env, uint64_t arg)
416 float64 ret = uint64_to_float64(arg, &env->fp_status);
417 update_fr0_op(env, GETPC());
421 uint32_t HELPER(fcnv_s_uw)(CPUHPPAState *env, float32 arg)
423 uint32_t ret = float32_to_uint32(arg, &env->fp_status);
424 update_fr0_op(env, GETPC());
428 uint32_t HELPER(fcnv_d_uw)(CPUHPPAState *env, float64 arg)
430 uint32_t ret = float64_to_uint32(arg, &env->fp_status);
431 update_fr0_op(env, GETPC());
435 uint64_t HELPER(fcnv_s_udw)(CPUHPPAState *env, float32 arg)
437 uint64_t ret = float32_to_uint64(arg, &env->fp_status);
438 update_fr0_op(env, GETPC());
442 uint64_t HELPER(fcnv_d_udw)(CPUHPPAState *env, float64 arg)
444 uint64_t ret = float64_to_uint64(arg, &env->fp_status);
445 update_fr0_op(env, GETPC());
449 uint32_t HELPER(fcnv_t_s_uw)(CPUHPPAState *env, float32 arg)
451 uint32_t ret = float32_to_uint32_round_to_zero(arg, &env->fp_status);
452 update_fr0_op(env, GETPC());
456 uint32_t HELPER(fcnv_t_d_uw)(CPUHPPAState *env, float64 arg)
458 uint32_t ret = float64_to_uint32_round_to_zero(arg, &env->fp_status);
459 update_fr0_op(env, GETPC());
463 uint64_t HELPER(fcnv_t_s_udw)(CPUHPPAState *env, float32 arg)
465 uint64_t ret = float32_to_uint64_round_to_zero(arg, &env->fp_status);
466 update_fr0_op(env, GETPC());
470 uint64_t HELPER(fcnv_t_d_udw)(CPUHPPAState *env, float64 arg)
472 uint64_t ret = float64_to_uint64_round_to_zero(arg, &env->fp_status);
473 update_fr0_op(env, GETPC());
477 static void update_fr0_cmp(CPUHPPAState *env, uint32_t y, uint32_t c, int r)
479 uint32_t shadow = env->fr0_shadow;
482 case float_relation_greater:
483 c = extract32(c, 4, 1);
485 case float_relation_less:
486 c = extract32(c, 3, 1);
488 case float_relation_equal:
489 c = extract32(c, 2, 1);
491 case float_relation_unordered:
492 c = extract32(c, 1, 1);
495 g_assert_not_reached();
499 /* targeted comparison */
500 /* set fpsr[ca[y - 1]] to current compare */
501 shadow = deposit32(shadow, 21 - (y - 1), 1, c);
503 /* queued comparison */
504 /* shift cq right by one place */
505 shadow = deposit32(shadow, 11, 10, extract32(shadow, 12, 10));
506 /* move fpsr[c] to fpsr[cq[0]] */
507 shadow = deposit32(shadow, 21, 1, extract32(shadow, 26, 1));
508 /* set fpsr[c] to current compare */
509 shadow = deposit32(shadow, 26, 1, c);
512 env->fr0_shadow = shadow;
513 env->fr[0] = (uint64_t)shadow << 32;
516 void HELPER(fcmp_s)(CPUHPPAState *env, float32 a, float32 b,
517 uint32_t y, uint32_t c)
521 r = float32_compare(a, b, &env->fp_status);
523 r = float32_compare_quiet(a, b, &env->fp_status);
525 update_fr0_op(env, GETPC());
526 update_fr0_cmp(env, y, c, r);
529 void HELPER(fcmp_d)(CPUHPPAState *env, float64 a, float64 b,
530 uint32_t y, uint32_t c)
534 r = float64_compare(a, b, &env->fp_status);
536 r = float64_compare_quiet(a, b, &env->fp_status);
538 update_fr0_op(env, GETPC());
539 update_fr0_cmp(env, y, c, r);
542 float32 HELPER(fmpyfadd_s)(CPUHPPAState *env, float32 a, float32 b, float32 c)
544 float32 ret = float32_muladd(a, b, c, 0, &env->fp_status);
545 update_fr0_op(env, GETPC());
549 float32 HELPER(fmpynfadd_s)(CPUHPPAState *env, float32 a, float32 b, float32 c)
551 float32 ret = float32_muladd(a, b, c, float_muladd_negate_product,
553 update_fr0_op(env, GETPC());
557 float64 HELPER(fmpyfadd_d)(CPUHPPAState *env, float64 a, float64 b, float64 c)
559 float64 ret = float64_muladd(a, b, c, 0, &env->fp_status);
560 update_fr0_op(env, GETPC());
564 float64 HELPER(fmpynfadd_d)(CPUHPPAState *env, float64 a, float64 b, float64 c)
566 float64 ret = float64_muladd(a, b, c, float_muladd_negate_product,
568 update_fr0_op(env, GETPC());