2
* Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
5
* Redistribution and use in source and binary forms, with or without
6
* modification, are permitted provided that the following conditions are met:
7
* * Redistributions of source code must retain the above copyright
8
* notice, this list of conditions and the following disclaimer.
9
* * Redistributions in binary form must reproduce the above copyright
10
* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
12
* * Neither the name of the Open Source and Linux Lab nor the
13
* names of its contributors may be used to endorse or promote products
14
* derived from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
20
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
#include "qemu/osdep.h"
29
#include "qemu/main-loop.h"
31
#include "exec/helper-proto.h"
32
#include "qemu/host-utils.h"
33
#include "exec/exec-all.h"
34
#include "exec/cpu_ldst.h"
35
#include "exec/address-spaces.h"
36
#include "qemu/timer.h"
38
void xtensa_cpu_do_unaligned_access(CPUState *cs,
39
vaddr addr, MMUAccessType access_type,
40
int mmu_idx, uintptr_t retaddr)
42
XtensaCPU *cpu = XTENSA_CPU(cs);
43
CPUXtensaState *env = &cpu->env;
45
if (xtensa_option_enabled(env->config, XTENSA_OPTION_UNALIGNED_EXCEPTION) &&
46
!xtensa_option_enabled(env->config, XTENSA_OPTION_HW_ALIGNMENT)) {
47
cpu_restore_state(CPU(cpu), retaddr);
48
HELPER(exception_cause_vaddr)(env,
49
env->pc, LOAD_STORE_ALIGNMENT_CAUSE, addr);
53
void tlb_fill(CPUState *cs, target_ulong vaddr, MMUAccessType access_type,
54
int mmu_idx, uintptr_t retaddr)
56
XtensaCPU *cpu = XTENSA_CPU(cs);
57
CPUXtensaState *env = &cpu->env;
61
int ret = xtensa_get_physical_addr(env, true, vaddr, access_type, mmu_idx,
62
&paddr, &page_size, &access);
64
qemu_log_mask(CPU_LOG_MMU, "%s(%08x, %d, %d) -> %08x, ret = %d\n",
65
__func__, vaddr, access_type, mmu_idx, paddr, ret);
69
vaddr & TARGET_PAGE_MASK,
70
paddr & TARGET_PAGE_MASK,
71
access, mmu_idx, page_size);
73
cpu_restore_state(cs, retaddr);
74
HELPER(exception_cause_vaddr)(env, env->pc, ret, vaddr);
78
void xtensa_cpu_do_unassigned_access(CPUState *cs, hwaddr addr,
79
bool is_write, bool is_exec, int opaque,
82
XtensaCPU *cpu = XTENSA_CPU(cs);
83
CPUXtensaState *env = &cpu->env;
85
HELPER(exception_cause_vaddr)(env, env->pc,
87
INSTR_PIF_ADDR_ERROR_CAUSE :
88
LOAD_STORE_PIF_ADDR_ERROR_CAUSE,
89
is_exec ? addr : cs->mem_io_vaddr);
92
static void tb_invalidate_virtual_addr(CPUXtensaState *env, uint32_t vaddr)
97
int ret = xtensa_get_physical_addr(env, false, vaddr, 2, 0,
98
&paddr, &page_size, &access);
100
tb_invalidate_phys_addr(&address_space_memory, paddr);
104
void HELPER(exception)(CPUXtensaState *env, uint32_t excp)
106
CPUState *cs = CPU(xtensa_env_get_cpu(env));
108
cs->exception_index = excp;
109
if (excp == EXCP_YIELD) {
110
env->yield_needed = 0;
112
if (excp == EXCP_DEBUG) {
113
env->exception_taken = 0;
118
void HELPER(exception_cause)(CPUXtensaState *env, uint32_t pc, uint32_t cause)
123
if (env->sregs[PS] & PS_EXCM) {
124
if (env->config->ndepc) {
125
env->sregs[DEPC] = pc;
127
env->sregs[EPC1] = pc;
131
env->sregs[EPC1] = pc;
132
vector = (env->sregs[PS] & PS_UM) ? EXC_USER : EXC_KERNEL;
135
env->sregs[EXCCAUSE] = cause;
136
env->sregs[PS] |= PS_EXCM;
138
HELPER(exception)(env, vector);
141
void HELPER(exception_cause_vaddr)(CPUXtensaState *env,
142
uint32_t pc, uint32_t cause, uint32_t vaddr)
144
env->sregs[EXCVADDR] = vaddr;
145
HELPER(exception_cause)(env, pc, cause);
148
void debug_exception_env(CPUXtensaState *env, uint32_t cause)
150
if (xtensa_get_cintlevel(env) < env->config->debug_level) {
151
HELPER(debug_exception)(env, env->pc, cause);
155
void HELPER(debug_exception)(CPUXtensaState *env, uint32_t pc, uint32_t cause)
157
unsigned level = env->config->debug_level;
160
env->sregs[DEBUGCAUSE] = cause;
161
env->sregs[EPC1 + level - 1] = pc;
162
env->sregs[EPS2 + level - 2] = env->sregs[PS];
163
env->sregs[PS] = (env->sregs[PS] & ~PS_INTLEVEL) | PS_EXCM |
164
(level << PS_INTLEVEL_SHIFT);
165
HELPER(exception)(env, EXC_DEBUG);
168
static void copy_window_from_phys(CPUXtensaState *env,
169
uint32_t window, uint32_t phys, uint32_t n)
171
assert(phys < env->config->nareg);
172
if (phys + n <= env->config->nareg) {
173
memcpy(env->regs + window, env->phys_regs + phys,
174
n * sizeof(uint32_t));
176
uint32_t n1 = env->config->nareg - phys;
177
memcpy(env->regs + window, env->phys_regs + phys,
178
n1 * sizeof(uint32_t));
179
memcpy(env->regs + window + n1, env->phys_regs,
180
(n - n1) * sizeof(uint32_t));
184
static void copy_phys_from_window(CPUXtensaState *env,
185
uint32_t phys, uint32_t window, uint32_t n)
187
assert(phys < env->config->nareg);
188
if (phys + n <= env->config->nareg) {
189
memcpy(env->phys_regs + phys, env->regs + window,
190
n * sizeof(uint32_t));
192
uint32_t n1 = env->config->nareg - phys;
193
memcpy(env->phys_regs + phys, env->regs + window,
194
n1 * sizeof(uint32_t));
195
memcpy(env->phys_regs, env->regs + window + n1,
196
(n - n1) * sizeof(uint32_t));
201
static inline unsigned windowbase_bound(unsigned a, const CPUXtensaState *env)
203
return a & (env->config->nareg / 4 - 1);
206
static inline unsigned windowstart_bit(unsigned a, const CPUXtensaState *env)
208
return 1 << windowbase_bound(a, env);
211
void xtensa_sync_window_from_phys(CPUXtensaState *env)
213
copy_window_from_phys(env, 0, env->sregs[WINDOW_BASE] * 4, 16);
216
void xtensa_sync_phys_from_window(CPUXtensaState *env)
218
copy_phys_from_window(env, env->sregs[WINDOW_BASE] * 4, 0, 16);
221
static void rotate_window_abs(CPUXtensaState *env, uint32_t position)
223
xtensa_sync_phys_from_window(env);
224
env->sregs[WINDOW_BASE] = windowbase_bound(position, env);
225
xtensa_sync_window_from_phys(env);
228
static void rotate_window(CPUXtensaState *env, uint32_t delta)
230
rotate_window_abs(env, env->sregs[WINDOW_BASE] + delta);
233
void HELPER(wsr_windowbase)(CPUXtensaState *env, uint32_t v)
235
rotate_window_abs(env, v);
238
void HELPER(entry)(CPUXtensaState *env, uint32_t pc, uint32_t s, uint32_t imm)
240
int callinc = (env->sregs[PS] & PS_CALLINC) >> PS_CALLINC_SHIFT;
241
if (s > 3 || ((env->sregs[PS] & (PS_WOE | PS_EXCM)) ^ PS_WOE) != 0) {
242
qemu_log_mask(LOG_GUEST_ERROR, "Illegal entry instruction(pc = %08x), PS = %08x\n",
244
HELPER(exception_cause)(env, pc, ILLEGAL_INSTRUCTION_CAUSE);
246
uint32_t windowstart = xtensa_replicate_windowstart(env) >>
247
(env->sregs[WINDOW_BASE] + 1);
249
if (windowstart & ((1 << callinc) - 1)) {
250
HELPER(window_check)(env, pc, callinc);
252
env->regs[(callinc << 2) | (s & 3)] = env->regs[s] - (imm << 3);
253
rotate_window(env, callinc);
254
env->sregs[WINDOW_START] |=
255
windowstart_bit(env->sregs[WINDOW_BASE], env);
259
void HELPER(window_check)(CPUXtensaState *env, uint32_t pc, uint32_t w)
261
uint32_t windowbase = windowbase_bound(env->sregs[WINDOW_BASE], env);
262
uint32_t windowstart = xtensa_replicate_windowstart(env) >>
263
(env->sregs[WINDOW_BASE] + 1);
264
uint32_t n = ctz32(windowstart) + 1;
268
rotate_window(env, n);
269
env->sregs[PS] = (env->sregs[PS] & ~PS_OWB) |
270
(windowbase << PS_OWB_SHIFT) | PS_EXCM;
271
env->sregs[EPC1] = env->pc = pc;
273
switch (ctz32(windowstart >> n)) {
275
HELPER(exception)(env, EXC_WINDOW_OVERFLOW4);
278
HELPER(exception)(env, EXC_WINDOW_OVERFLOW8);
281
HELPER(exception)(env, EXC_WINDOW_OVERFLOW12);
286
uint32_t HELPER(retw)(CPUXtensaState *env, uint32_t pc)
288
int n = (env->regs[0] >> 30) & 0x3;
290
uint32_t windowbase = windowbase_bound(env->sregs[WINDOW_BASE], env);
291
uint32_t windowstart = env->sregs[WINDOW_START];
294
if (windowstart & windowstart_bit(windowbase - 1, env)) {
296
} else if (windowstart & windowstart_bit(windowbase - 2, env)) {
298
} else if (windowstart & windowstart_bit(windowbase - 3, env)) {
302
if (n == 0 || (m != 0 && m != n) ||
303
((env->sregs[PS] & (PS_WOE | PS_EXCM)) ^ PS_WOE) != 0) {
304
qemu_log_mask(LOG_GUEST_ERROR, "Illegal retw instruction(pc = %08x), "
305
"PS = %08x, m = %d, n = %d\n",
306
pc, env->sregs[PS], m, n);
307
HELPER(exception_cause)(env, pc, ILLEGAL_INSTRUCTION_CAUSE);
309
int owb = windowbase;
311
ret_pc = (pc & 0xc0000000) | (env->regs[0] & 0x3fffffff);
313
rotate_window(env, -n);
314
if (windowstart & windowstart_bit(env->sregs[WINDOW_BASE], env)) {
315
env->sregs[WINDOW_START] &= ~windowstart_bit(owb, env);
317
/* window underflow */
318
env->sregs[PS] = (env->sregs[PS] & ~PS_OWB) |
319
(windowbase << PS_OWB_SHIFT) | PS_EXCM;
320
env->sregs[EPC1] = env->pc = pc;
323
HELPER(exception)(env, EXC_WINDOW_UNDERFLOW4);
325
HELPER(exception)(env, EXC_WINDOW_UNDERFLOW8);
327
HELPER(exception)(env, EXC_WINDOW_UNDERFLOW12);
334
void HELPER(rotw)(CPUXtensaState *env, uint32_t imm4)
336
rotate_window(env, imm4);
339
void HELPER(restore_owb)(CPUXtensaState *env)
341
rotate_window_abs(env, (env->sregs[PS] & PS_OWB) >> PS_OWB_SHIFT);
344
void HELPER(movsp)(CPUXtensaState *env, uint32_t pc)
346
if ((env->sregs[WINDOW_START] &
347
(windowstart_bit(env->sregs[WINDOW_BASE] - 3, env) |
348
windowstart_bit(env->sregs[WINDOW_BASE] - 2, env) |
349
windowstart_bit(env->sregs[WINDOW_BASE] - 1, env))) == 0) {
350
HELPER(exception_cause)(env, pc, ALLOCA_CAUSE);
354
void HELPER(wsr_lbeg)(CPUXtensaState *env, uint32_t v)
356
if (env->sregs[LBEG] != v) {
357
tb_invalidate_virtual_addr(env, env->sregs[LEND] - 1);
358
env->sregs[LBEG] = v;
362
void HELPER(wsr_lend)(CPUXtensaState *env, uint32_t v)
364
if (env->sregs[LEND] != v) {
365
tb_invalidate_virtual_addr(env, env->sregs[LEND] - 1);
366
env->sregs[LEND] = v;
367
tb_invalidate_virtual_addr(env, env->sregs[LEND] - 1);
371
void HELPER(dump_state)(CPUXtensaState *env)
373
XtensaCPU *cpu = xtensa_env_get_cpu(env);
375
cpu_dump_state(CPU(cpu), stderr, fprintf, 0);
378
void HELPER(waiti)(CPUXtensaState *env, uint32_t pc, uint32_t intlevel)
383
env->sregs[PS] = (env->sregs[PS] & ~PS_INTLEVEL) |
384
(intlevel << PS_INTLEVEL_SHIFT);
386
qemu_mutex_lock_iothread();
387
check_interrupts(env);
388
qemu_mutex_unlock_iothread();
390
if (env->pending_irq_level) {
391
cpu_loop_exit(CPU(xtensa_env_get_cpu(env)));
395
cpu = CPU(xtensa_env_get_cpu(env));
397
HELPER(exception)(env, EXCP_HLT);
400
void HELPER(update_ccount)(CPUXtensaState *env)
402
uint64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
404
env->ccount_time = now;
405
env->sregs[CCOUNT] = env->ccount_base +
406
(uint32_t)((now - env->time_base) *
407
env->config->clock_freq_khz / 1000000);
410
void HELPER(wsr_ccount)(CPUXtensaState *env, uint32_t v)
414
HELPER(update_ccount)(env);
415
env->ccount_base += v - env->sregs[CCOUNT];
416
for (i = 0; i < env->config->nccompare; ++i) {
417
HELPER(update_ccompare)(env, i);
421
void HELPER(update_ccompare)(CPUXtensaState *env, uint32_t i)
425
HELPER(update_ccount)(env);
426
dcc = (uint64_t)(env->sregs[CCOMPARE + i] - env->sregs[CCOUNT] - 1) + 1;
427
timer_mod(env->ccompare[i].timer,
428
env->ccount_time + (dcc * 1000000) / env->config->clock_freq_khz);
429
env->yield_needed = 1;
432
void HELPER(check_interrupts)(CPUXtensaState *env)
434
qemu_mutex_lock_iothread();
435
check_interrupts(env);
436
qemu_mutex_unlock_iothread();
439
void HELPER(itlb_hit_test)(CPUXtensaState *env, uint32_t vaddr)
441
get_page_addr_code(env, vaddr);
445
* Check vaddr accessibility/cache attributes and raise an exception if
446
* specified by the ATOMCTL SR.
448
* Note: local memory exclusion is not implemented
450
void HELPER(check_atomctl)(CPUXtensaState *env, uint32_t pc, uint32_t vaddr)
452
uint32_t paddr, page_size, access;
453
uint32_t atomctl = env->sregs[ATOMCTL];
454
int rc = xtensa_get_physical_addr(env, true, vaddr, 1,
455
xtensa_get_cring(env), &paddr, &page_size, &access);
458
* s32c1i never causes LOAD_PROHIBITED_CAUSE exceptions,
459
* see opcode description in the ISA
462
(access & (PAGE_READ | PAGE_WRITE)) != (PAGE_READ | PAGE_WRITE)) {
463
rc = STORE_PROHIBITED_CAUSE;
467
HELPER(exception_cause_vaddr)(env, pc, rc, vaddr);
471
* When data cache is not configured use ATOMCTL bypass field.
472
* See ISA, 4.3.12.4 The Atomic Operation Control Register (ATOMCTL)
473
* under the Conditional Store Option.
475
if (!xtensa_option_enabled(env->config, XTENSA_OPTION_DCACHE)) {
476
access = PAGE_CACHE_BYPASS;
479
switch (access & PAGE_CACHE_MASK) {
486
case PAGE_CACHE_BYPASS:
487
if ((atomctl & 0x3) == 0) {
488
HELPER(exception_cause_vaddr)(env, pc,
489
LOAD_STORE_ERROR_CAUSE, vaddr);
493
case PAGE_CACHE_ISOLATE:
494
HELPER(exception_cause_vaddr)(env, pc,
495
LOAD_STORE_ERROR_CAUSE, vaddr);
503
void HELPER(wsr_memctl)(CPUXtensaState *env, uint32_t v)
505
if (xtensa_option_enabled(env->config, XTENSA_OPTION_ICACHE)) {
506
if (extract32(v, MEMCTL_IUSEWAYS_SHIFT, MEMCTL_IUSEWAYS_LEN) >
507
env->config->icache_ways) {
508
deposit32(v, MEMCTL_IUSEWAYS_SHIFT, MEMCTL_IUSEWAYS_LEN,
509
env->config->icache_ways);
512
if (xtensa_option_enabled(env->config, XTENSA_OPTION_DCACHE)) {
513
if (extract32(v, MEMCTL_DUSEWAYS_SHIFT, MEMCTL_DUSEWAYS_LEN) >
514
env->config->dcache_ways) {
515
deposit32(v, MEMCTL_DUSEWAYS_SHIFT, MEMCTL_DUSEWAYS_LEN,
516
env->config->dcache_ways);
518
if (extract32(v, MEMCTL_DALLOCWAYS_SHIFT, MEMCTL_DALLOCWAYS_LEN) >
519
env->config->dcache_ways) {
520
deposit32(v, MEMCTL_DALLOCWAYS_SHIFT, MEMCTL_DALLOCWAYS_LEN,
521
env->config->dcache_ways);
524
env->sregs[MEMCTL] = v & env->config->memctl_mask;
527
void HELPER(wsr_rasid)(CPUXtensaState *env, uint32_t v)
529
XtensaCPU *cpu = xtensa_env_get_cpu(env);
531
v = (v & 0xffffff00) | 0x1;
532
if (v != env->sregs[RASID]) {
533
env->sregs[RASID] = v;
538
static uint32_t get_page_size(const CPUXtensaState *env, bool dtlb, uint32_t way)
540
uint32_t tlbcfg = env->sregs[dtlb ? DTLBCFG : ITLBCFG];
544
return (tlbcfg >> 16) & 0x3;
547
return (tlbcfg >> 20) & 0x1;
550
return (tlbcfg >> 24) & 0x1;
558
* Get bit mask for the virtual address bits translated by the TLB way
560
uint32_t xtensa_tlb_get_addr_mask(const CPUXtensaState *env, bool dtlb, uint32_t way)
562
if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
563
bool varway56 = dtlb ?
564
env->config->dtlb.varway56 :
565
env->config->itlb.varway56;
569
return 0xfff00000 << get_page_size(env, dtlb, way) * 2;
573
return 0xf8000000 << get_page_size(env, dtlb, way);
580
return 0xf0000000 << (1 - get_page_size(env, dtlb, way));
589
return REGION_PAGE_MASK;
594
* Get bit mask for the 'VPN without index' field.
595
* See ISA, 4.6.5.6, data format for RxTLB0
597
static uint32_t get_vpn_mask(const CPUXtensaState *env, bool dtlb, uint32_t way)
601
env->config->dtlb.nrefillentries :
602
env->config->itlb.nrefillentries) == 32;
603
return is32 ? 0xffff8000 : 0xffffc000;
604
} else if (way == 4) {
605
return xtensa_tlb_get_addr_mask(env, dtlb, way) << 2;
606
} else if (way <= 6) {
607
uint32_t mask = xtensa_tlb_get_addr_mask(env, dtlb, way);
608
bool varway56 = dtlb ?
609
env->config->dtlb.varway56 :
610
env->config->itlb.varway56;
613
return mask << (way == 5 ? 2 : 3);
623
* Split virtual address into VPN (with index) and entry index
624
* for the given TLB way
626
void split_tlb_entry_spec_way(const CPUXtensaState *env, uint32_t v, bool dtlb,
627
uint32_t *vpn, uint32_t wi, uint32_t *ei)
629
bool varway56 = dtlb ?
630
env->config->dtlb.varway56 :
631
env->config->itlb.varway56;
639
env->config->dtlb.nrefillentries :
640
env->config->itlb.nrefillentries) == 32;
641
*ei = (v >> 12) & (is32 ? 0x7 : 0x3);
646
uint32_t eibase = 20 + get_page_size(env, dtlb, wi) * 2;
647
*ei = (v >> eibase) & 0x3;
653
uint32_t eibase = 27 + get_page_size(env, dtlb, wi);
654
*ei = (v >> eibase) & 0x3;
656
*ei = (v >> 27) & 0x1;
662
uint32_t eibase = 29 - get_page_size(env, dtlb, wi);
663
*ei = (v >> eibase) & 0x7;
665
*ei = (v >> 28) & 0x1;
674
*vpn = v & xtensa_tlb_get_addr_mask(env, dtlb, wi);
678
* Split TLB address into TLB way, entry index and VPN (with index).
679
* See ISA, 4.6.5.5 - 4.6.5.8 for the TLB addressing format
681
static void split_tlb_entry_spec(CPUXtensaState *env, uint32_t v, bool dtlb,
682
uint32_t *vpn, uint32_t *wi, uint32_t *ei)
684
if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
685
*wi = v & (dtlb ? 0xf : 0x7);
686
split_tlb_entry_spec_way(env, v, dtlb, vpn, *wi, ei);
688
*vpn = v & REGION_PAGE_MASK;
690
*ei = (v >> 29) & 0x7;
694
static xtensa_tlb_entry *get_tlb_entry(CPUXtensaState *env,
695
uint32_t v, bool dtlb, uint32_t *pwi)
701
split_tlb_entry_spec(env, v, dtlb, &vpn, &wi, &ei);
705
return xtensa_tlb_get_entry(env, dtlb, wi, ei);
708
uint32_t HELPER(rtlb0)(CPUXtensaState *env, uint32_t v, uint32_t dtlb)
710
if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
712
const xtensa_tlb_entry *entry = get_tlb_entry(env, v, dtlb, &wi);
713
return (entry->vaddr & get_vpn_mask(env, dtlb, wi)) | entry->asid;
715
return v & REGION_PAGE_MASK;
719
uint32_t HELPER(rtlb1)(CPUXtensaState *env, uint32_t v, uint32_t dtlb)
721
const xtensa_tlb_entry *entry = get_tlb_entry(env, v, dtlb, NULL);
722
return entry->paddr | entry->attr;
725
void HELPER(itlb)(CPUXtensaState *env, uint32_t v, uint32_t dtlb)
727
if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
729
xtensa_tlb_entry *entry = get_tlb_entry(env, v, dtlb, &wi);
730
if (entry->variable && entry->asid) {
731
tlb_flush_page(CPU(xtensa_env_get_cpu(env)), entry->vaddr);
737
uint32_t HELPER(ptlb)(CPUXtensaState *env, uint32_t v, uint32_t dtlb)
739
if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
743
int res = xtensa_tlb_lookup(env, v, dtlb, &wi, &ei, &ring);
747
if (ring >= xtensa_get_ring(env)) {
748
return (v & 0xfffff000) | wi | (dtlb ? 0x10 : 0x8);
752
case INST_TLB_MULTI_HIT_CAUSE:
753
case LOAD_STORE_TLB_MULTI_HIT_CAUSE:
754
HELPER(exception_cause_vaddr)(env, env->pc, res, v);
759
return (v & REGION_PAGE_MASK) | 0x1;
763
void xtensa_tlb_set_entry_mmu(const CPUXtensaState *env,
764
xtensa_tlb_entry *entry, bool dtlb,
765
unsigned wi, unsigned ei, uint32_t vpn, uint32_t pte)
768
entry->paddr = pte & xtensa_tlb_get_addr_mask(env, dtlb, wi);
769
entry->asid = (env->sregs[RASID] >> ((pte >> 1) & 0x18)) & 0xff;
770
entry->attr = pte & 0xf;
773
void xtensa_tlb_set_entry(CPUXtensaState *env, bool dtlb,
774
unsigned wi, unsigned ei, uint32_t vpn, uint32_t pte)
776
XtensaCPU *cpu = xtensa_env_get_cpu(env);
777
CPUState *cs = CPU(cpu);
778
xtensa_tlb_entry *entry = xtensa_tlb_get_entry(env, dtlb, wi, ei);
780
if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
781
if (entry->variable) {
783
tlb_flush_page(cs, entry->vaddr);
785
xtensa_tlb_set_entry_mmu(env, entry, dtlb, wi, ei, vpn, pte);
786
tlb_flush_page(cs, entry->vaddr);
788
qemu_log_mask(LOG_GUEST_ERROR, "%s %d, %d, %d trying to set immutable entry\n",
789
__func__, dtlb, wi, ei);
792
tlb_flush_page(cs, entry->vaddr);
793
if (xtensa_option_enabled(env->config,
794
XTENSA_OPTION_REGION_TRANSLATION)) {
795
entry->paddr = pte & REGION_PAGE_MASK;
797
entry->attr = pte & 0xf;
801
void HELPER(wtlb)(CPUXtensaState *env, uint32_t p, uint32_t v, uint32_t dtlb)
806
split_tlb_entry_spec(env, v, dtlb, &vpn, &wi, &ei);
807
xtensa_tlb_set_entry(env, dtlb, wi, ei, vpn, p);
811
void HELPER(wsr_ibreakenable)(CPUXtensaState *env, uint32_t v)
813
uint32_t change = v ^ env->sregs[IBREAKENABLE];
816
for (i = 0; i < env->config->nibreak; ++i) {
817
if (change & (1 << i)) {
818
tb_invalidate_virtual_addr(env, env->sregs[IBREAKA + i]);
821
env->sregs[IBREAKENABLE] = v & ((1 << env->config->nibreak) - 1);
824
void HELPER(wsr_ibreaka)(CPUXtensaState *env, uint32_t i, uint32_t v)
826
if (env->sregs[IBREAKENABLE] & (1 << i) && env->sregs[IBREAKA + i] != v) {
827
tb_invalidate_virtual_addr(env, env->sregs[IBREAKA + i]);
828
tb_invalidate_virtual_addr(env, v);
830
env->sregs[IBREAKA + i] = v;
833
static void set_dbreak(CPUXtensaState *env, unsigned i, uint32_t dbreaka,
836
CPUState *cs = CPU(xtensa_env_get_cpu(env));
837
int flags = BP_CPU | BP_STOP_BEFORE_ACCESS;
838
uint32_t mask = dbreakc | ~DBREAKC_MASK;
840
if (env->cpu_watchpoint[i]) {
841
cpu_watchpoint_remove_by_ref(cs, env->cpu_watchpoint[i]);
843
if (dbreakc & DBREAKC_SB) {
844
flags |= BP_MEM_WRITE;
846
if (dbreakc & DBREAKC_LB) {
847
flags |= BP_MEM_READ;
849
/* contiguous mask after inversion is one less than some power of 2 */
850
if ((~mask + 1) & ~mask) {
851
qemu_log_mask(LOG_GUEST_ERROR, "DBREAKC mask is not contiguous: 0x%08x\n", dbreakc);
852
/* cut mask after the first zero bit */
853
mask = 0xffffffff << (32 - clo32(mask));
855
if (cpu_watchpoint_insert(cs, dbreaka & mask, ~mask + 1,
856
flags, &env->cpu_watchpoint[i])) {
857
env->cpu_watchpoint[i] = NULL;
858
qemu_log_mask(LOG_GUEST_ERROR, "Failed to set data breakpoint at 0x%08x/%d\n",
859
dbreaka & mask, ~mask + 1);
863
void HELPER(wsr_dbreaka)(CPUXtensaState *env, uint32_t i, uint32_t v)
865
uint32_t dbreakc = env->sregs[DBREAKC + i];
867
if ((dbreakc & DBREAKC_SB_LB) &&
868
env->sregs[DBREAKA + i] != v) {
869
set_dbreak(env, i, v, dbreakc);
871
env->sregs[DBREAKA + i] = v;
874
void HELPER(wsr_dbreakc)(CPUXtensaState *env, uint32_t i, uint32_t v)
876
if ((env->sregs[DBREAKC + i] ^ v) & (DBREAKC_SB_LB | DBREAKC_MASK)) {
877
if (v & DBREAKC_SB_LB) {
878
set_dbreak(env, i, env->sregs[DBREAKA + i], v);
880
if (env->cpu_watchpoint[i]) {
881
CPUState *cs = CPU(xtensa_env_get_cpu(env));
883
cpu_watchpoint_remove_by_ref(cs, env->cpu_watchpoint[i]);
884
env->cpu_watchpoint[i] = NULL;
888
env->sregs[DBREAKC + i] = v;
891
void HELPER(wur_fcr)(CPUXtensaState *env, uint32_t v)
893
static const int rounding_mode[] = {
894
float_round_nearest_even,
900
env->uregs[FCR] = v & 0xfffff07f;
901
set_float_rounding_mode(rounding_mode[v & 3], &env->fp_status);
904
float32 HELPER(abs_s)(float32 v)
906
return float32_abs(v);
909
float32 HELPER(neg_s)(float32 v)
911
return float32_chs(v);
914
float32 HELPER(add_s)(CPUXtensaState *env, float32 a, float32 b)
916
return float32_add(a, b, &env->fp_status);
919
float32 HELPER(sub_s)(CPUXtensaState *env, float32 a, float32 b)
921
return float32_sub(a, b, &env->fp_status);
924
float32 HELPER(mul_s)(CPUXtensaState *env, float32 a, float32 b)
926
return float32_mul(a, b, &env->fp_status);
929
float32 HELPER(madd_s)(CPUXtensaState *env, float32 a, float32 b, float32 c)
931
return float32_muladd(b, c, a, 0,
935
float32 HELPER(msub_s)(CPUXtensaState *env, float32 a, float32 b, float32 c)
937
return float32_muladd(b, c, a, float_muladd_negate_product,
941
uint32_t HELPER(ftoi)(float32 v, uint32_t rounding_mode, uint32_t scale)
943
float_status fp_status = {0};
945
set_float_rounding_mode(rounding_mode, &fp_status);
946
return float32_to_int32(
947
float32_scalbn(v, scale, &fp_status), &fp_status);
950
uint32_t HELPER(ftoui)(float32 v, uint32_t rounding_mode, uint32_t scale)
952
float_status fp_status = {0};
955
set_float_rounding_mode(rounding_mode, &fp_status);
957
res = float32_scalbn(v, scale, &fp_status);
959
if (float32_is_neg(v) && !float32_is_any_nan(v)) {
960
return float32_to_int32(res, &fp_status);
962
return float32_to_uint32(res, &fp_status);
966
float32 HELPER(itof)(CPUXtensaState *env, uint32_t v, uint32_t scale)
968
return float32_scalbn(int32_to_float32(v, &env->fp_status),
969
(int32_t)scale, &env->fp_status);
972
float32 HELPER(uitof)(CPUXtensaState *env, uint32_t v, uint32_t scale)
974
return float32_scalbn(uint32_to_float32(v, &env->fp_status),
975
(int32_t)scale, &env->fp_status);
978
static inline void set_br(CPUXtensaState *env, bool v, uint32_t br)
981
env->sregs[BR] |= br;
983
env->sregs[BR] &= ~br;
987
void HELPER(un_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
989
set_br(env, float32_unordered_quiet(a, b, &env->fp_status), br);
992
void HELPER(oeq_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
994
set_br(env, float32_eq_quiet(a, b, &env->fp_status), br);
997
void HELPER(ueq_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
999
int v = float32_compare_quiet(a, b, &env->fp_status);
1000
set_br(env, v == float_relation_equal || v == float_relation_unordered, br);
1003
void HELPER(olt_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
1005
set_br(env, float32_lt_quiet(a, b, &env->fp_status), br);
1008
void HELPER(ult_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
1010
int v = float32_compare_quiet(a, b, &env->fp_status);
1011
set_br(env, v == float_relation_less || v == float_relation_unordered, br);
1014
void HELPER(ole_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
1016
set_br(env, float32_le_quiet(a, b, &env->fp_status), br);
1019
void HELPER(ule_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
1021
int v = float32_compare_quiet(a, b, &env->fp_status);
1022
set_br(env, v != float_relation_greater, br);
1025
uint32_t HELPER(rer)(CPUXtensaState *env, uint32_t addr)
1027
return address_space_ldl(env->address_space_er, addr,
1028
(MemTxAttrs){0}, NULL);
1031
void HELPER(wer)(CPUXtensaState *env, uint32_t data, uint32_t addr)
1033
address_space_stl(env->address_space_er, addr, data,
1034
(MemTxAttrs){0}, NULL);