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Commit | Line | Data |
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296af7c9 BS |
1 | /* |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | ||
25 | /* Needed early for CONFIG_BSD etc. */ | |
26 | #include "config-host.h" | |
27 | ||
28 | #include "monitor.h" | |
29 | #include "sysemu.h" | |
30 | #include "gdbstub.h" | |
31 | #include "dma.h" | |
32 | #include "kvm.h" | |
33 | ||
96284e89 | 34 | #include "qemu-thread.h" |
296af7c9 | 35 | #include "cpus.h" |
0ff0fc19 JK |
36 | |
37 | #ifndef _WIN32 | |
a8486bc9 | 38 | #include "compatfd.h" |
0ff0fc19 | 39 | #endif |
296af7c9 | 40 | |
7277e027 BS |
41 | #ifdef SIGRTMIN |
42 | #define SIG_IPI (SIGRTMIN+4) | |
43 | #else | |
44 | #define SIG_IPI SIGUSR1 | |
45 | #endif | |
46 | ||
6d9cb73c JK |
47 | #ifdef CONFIG_LINUX |
48 | ||
49 | #include <sys/prctl.h> | |
50 | ||
c0532a76 MT |
51 | #ifndef PR_MCE_KILL |
52 | #define PR_MCE_KILL 33 | |
53 | #endif | |
54 | ||
6d9cb73c JK |
55 | #ifndef PR_MCE_KILL_SET |
56 | #define PR_MCE_KILL_SET 1 | |
57 | #endif | |
58 | ||
59 | #ifndef PR_MCE_KILL_EARLY | |
60 | #define PR_MCE_KILL_EARLY 1 | |
61 | #endif | |
62 | ||
63 | #endif /* CONFIG_LINUX */ | |
64 | ||
296af7c9 BS |
65 | static CPUState *next_cpu; |
66 | ||
67 | /***********************************************************/ | |
68 | void hw_error(const char *fmt, ...) | |
69 | { | |
70 | va_list ap; | |
71 | CPUState *env; | |
72 | ||
73 | va_start(ap, fmt); | |
74 | fprintf(stderr, "qemu: hardware error: "); | |
75 | vfprintf(stderr, fmt, ap); | |
76 | fprintf(stderr, "\n"); | |
77 | for(env = first_cpu; env != NULL; env = env->next_cpu) { | |
78 | fprintf(stderr, "CPU #%d:\n", env->cpu_index); | |
79 | #ifdef TARGET_I386 | |
80 | cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU); | |
81 | #else | |
82 | cpu_dump_state(env, stderr, fprintf, 0); | |
83 | #endif | |
84 | } | |
85 | va_end(ap); | |
86 | abort(); | |
87 | } | |
88 | ||
89 | void cpu_synchronize_all_states(void) | |
90 | { | |
91 | CPUState *cpu; | |
92 | ||
93 | for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) { | |
94 | cpu_synchronize_state(cpu); | |
95 | } | |
96 | } | |
97 | ||
98 | void cpu_synchronize_all_post_reset(void) | |
99 | { | |
100 | CPUState *cpu; | |
101 | ||
102 | for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) { | |
103 | cpu_synchronize_post_reset(cpu); | |
104 | } | |
105 | } | |
106 | ||
107 | void cpu_synchronize_all_post_init(void) | |
108 | { | |
109 | CPUState *cpu; | |
110 | ||
111 | for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) { | |
112 | cpu_synchronize_post_init(cpu); | |
113 | } | |
114 | } | |
115 | ||
3ae9501c MT |
116 | int cpu_is_stopped(CPUState *env) |
117 | { | |
118 | return !vm_running || env->stopped; | |
119 | } | |
120 | ||
296af7c9 BS |
121 | static void do_vm_stop(int reason) |
122 | { | |
123 | if (vm_running) { | |
124 | cpu_disable_ticks(); | |
125 | vm_running = 0; | |
126 | pause_all_vcpus(); | |
127 | vm_state_notify(0, reason); | |
55df6f33 MT |
128 | qemu_aio_flush(); |
129 | bdrv_flush_all(); | |
296af7c9 BS |
130 | monitor_protocol_event(QEVENT_STOP, NULL); |
131 | } | |
132 | } | |
133 | ||
134 | static int cpu_can_run(CPUState *env) | |
135 | { | |
0ab07c62 | 136 | if (env->stop) { |
296af7c9 | 137 | return 0; |
0ab07c62 JK |
138 | } |
139 | if (env->stopped || !vm_running) { | |
296af7c9 | 140 | return 0; |
0ab07c62 | 141 | } |
296af7c9 BS |
142 | return 1; |
143 | } | |
144 | ||
16400322 | 145 | static bool cpu_thread_is_idle(CPUState *env) |
296af7c9 | 146 | { |
16400322 JK |
147 | if (env->stop || env->queued_work_first) { |
148 | return false; | |
149 | } | |
150 | if (env->stopped || !vm_running) { | |
151 | return true; | |
152 | } | |
f2c1cc81 JK |
153 | if (!env->halted || qemu_cpu_has_work(env) || |
154 | (kvm_enabled() && kvm_irqchip_in_kernel())) { | |
16400322 JK |
155 | return false; |
156 | } | |
157 | return true; | |
296af7c9 BS |
158 | } |
159 | ||
ab33fcda | 160 | bool all_cpu_threads_idle(void) |
296af7c9 BS |
161 | { |
162 | CPUState *env; | |
163 | ||
16400322 JK |
164 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
165 | if (!cpu_thread_is_idle(env)) { | |
166 | return false; | |
167 | } | |
168 | } | |
169 | return true; | |
296af7c9 BS |
170 | } |
171 | ||
1009d2ed | 172 | static void cpu_handle_guest_debug(CPUState *env) |
83f338f7 | 173 | { |
3c638d06 | 174 | gdb_set_stop_cpu(env); |
8cf71710 | 175 | qemu_system_debug_request(); |
83f338f7 JK |
176 | #ifdef CONFIG_IOTHREAD |
177 | env->stopped = 1; | |
178 | #endif | |
3c638d06 JK |
179 | } |
180 | ||
714bd040 PB |
181 | #ifdef CONFIG_IOTHREAD |
182 | static void cpu_signal(int sig) | |
183 | { | |
184 | if (cpu_single_env) { | |
185 | cpu_exit(cpu_single_env); | |
186 | } | |
187 | exit_request = 1; | |
188 | } | |
189 | #endif | |
190 | ||
6d9cb73c JK |
191 | #ifdef CONFIG_LINUX |
192 | static void sigbus_reraise(void) | |
193 | { | |
194 | sigset_t set; | |
195 | struct sigaction action; | |
196 | ||
197 | memset(&action, 0, sizeof(action)); | |
198 | action.sa_handler = SIG_DFL; | |
199 | if (!sigaction(SIGBUS, &action, NULL)) { | |
200 | raise(SIGBUS); | |
201 | sigemptyset(&set); | |
202 | sigaddset(&set, SIGBUS); | |
203 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
204 | } | |
205 | perror("Failed to re-raise SIGBUS!\n"); | |
206 | abort(); | |
207 | } | |
208 | ||
209 | static void sigbus_handler(int n, struct qemu_signalfd_siginfo *siginfo, | |
210 | void *ctx) | |
211 | { | |
212 | if (kvm_on_sigbus(siginfo->ssi_code, | |
213 | (void *)(intptr_t)siginfo->ssi_addr)) { | |
214 | sigbus_reraise(); | |
215 | } | |
216 | } | |
217 | ||
218 | static void qemu_init_sigbus(void) | |
219 | { | |
220 | struct sigaction action; | |
221 | ||
222 | memset(&action, 0, sizeof(action)); | |
223 | action.sa_flags = SA_SIGINFO; | |
224 | action.sa_sigaction = (void (*)(int, siginfo_t*, void*))sigbus_handler; | |
225 | sigaction(SIGBUS, &action, NULL); | |
226 | ||
227 | prctl(PR_MCE_KILL, PR_MCE_KILL_SET, PR_MCE_KILL_EARLY, 0, 0); | |
228 | } | |
229 | ||
1ab3c6c0 JK |
230 | static void qemu_kvm_eat_signals(CPUState *env) |
231 | { | |
232 | struct timespec ts = { 0, 0 }; | |
233 | siginfo_t siginfo; | |
234 | sigset_t waitset; | |
235 | sigset_t chkset; | |
236 | int r; | |
237 | ||
238 | sigemptyset(&waitset); | |
239 | sigaddset(&waitset, SIG_IPI); | |
240 | sigaddset(&waitset, SIGBUS); | |
241 | ||
242 | do { | |
243 | r = sigtimedwait(&waitset, &siginfo, &ts); | |
244 | if (r == -1 && !(errno == EAGAIN || errno == EINTR)) { | |
245 | perror("sigtimedwait"); | |
246 | exit(1); | |
247 | } | |
248 | ||
249 | switch (r) { | |
250 | case SIGBUS: | |
251 | if (kvm_on_sigbus_vcpu(env, siginfo.si_code, siginfo.si_addr)) { | |
252 | sigbus_reraise(); | |
253 | } | |
254 | break; | |
255 | default: | |
256 | break; | |
257 | } | |
258 | ||
259 | r = sigpending(&chkset); | |
260 | if (r == -1) { | |
261 | perror("sigpending"); | |
262 | exit(1); | |
263 | } | |
264 | } while (sigismember(&chkset, SIG_IPI) || sigismember(&chkset, SIGBUS)); | |
265 | ||
266 | #ifndef CONFIG_IOTHREAD | |
267 | if (sigismember(&chkset, SIGIO) || sigismember(&chkset, SIGALRM)) { | |
268 | qemu_notify_event(); | |
269 | } | |
270 | #endif | |
271 | } | |
272 | ||
6d9cb73c JK |
273 | #else /* !CONFIG_LINUX */ |
274 | ||
275 | static void qemu_init_sigbus(void) | |
276 | { | |
277 | } | |
1ab3c6c0 JK |
278 | |
279 | static void qemu_kvm_eat_signals(CPUState *env) | |
280 | { | |
281 | } | |
6d9cb73c JK |
282 | #endif /* !CONFIG_LINUX */ |
283 | ||
296af7c9 BS |
284 | #ifndef _WIN32 |
285 | static int io_thread_fd = -1; | |
286 | ||
287 | static void qemu_event_increment(void) | |
288 | { | |
289 | /* Write 8 bytes to be compatible with eventfd. */ | |
26a82330 | 290 | static const uint64_t val = 1; |
296af7c9 BS |
291 | ssize_t ret; |
292 | ||
0ab07c62 | 293 | if (io_thread_fd == -1) { |
296af7c9 | 294 | return; |
0ab07c62 | 295 | } |
296af7c9 BS |
296 | do { |
297 | ret = write(io_thread_fd, &val, sizeof(val)); | |
298 | } while (ret < 0 && errno == EINTR); | |
299 | ||
300 | /* EAGAIN is fine, a read must be pending. */ | |
301 | if (ret < 0 && errno != EAGAIN) { | |
77bec686 | 302 | fprintf(stderr, "qemu_event_increment: write() failed: %s\n", |
296af7c9 BS |
303 | strerror(errno)); |
304 | exit (1); | |
305 | } | |
306 | } | |
307 | ||
308 | static void qemu_event_read(void *opaque) | |
309 | { | |
e0efb993 | 310 | int fd = (intptr_t)opaque; |
296af7c9 BS |
311 | ssize_t len; |
312 | char buffer[512]; | |
313 | ||
314 | /* Drain the notify pipe. For eventfd, only 8 bytes will be read. */ | |
315 | do { | |
316 | len = read(fd, buffer, sizeof(buffer)); | |
317 | } while ((len == -1 && errno == EINTR) || len == sizeof(buffer)); | |
318 | } | |
319 | ||
320 | static int qemu_event_init(void) | |
321 | { | |
322 | int err; | |
323 | int fds[2]; | |
324 | ||
325 | err = qemu_eventfd(fds); | |
0ab07c62 | 326 | if (err == -1) { |
296af7c9 | 327 | return -errno; |
0ab07c62 | 328 | } |
296af7c9 | 329 | err = fcntl_setfl(fds[0], O_NONBLOCK); |
0ab07c62 | 330 | if (err < 0) { |
296af7c9 | 331 | goto fail; |
0ab07c62 | 332 | } |
296af7c9 | 333 | err = fcntl_setfl(fds[1], O_NONBLOCK); |
0ab07c62 | 334 | if (err < 0) { |
296af7c9 | 335 | goto fail; |
0ab07c62 | 336 | } |
296af7c9 | 337 | qemu_set_fd_handler2(fds[0], NULL, qemu_event_read, NULL, |
e0efb993 | 338 | (void *)(intptr_t)fds[0]); |
296af7c9 BS |
339 | |
340 | io_thread_fd = fds[1]; | |
341 | return 0; | |
342 | ||
343 | fail: | |
344 | close(fds[0]); | |
345 | close(fds[1]); | |
346 | return err; | |
347 | } | |
55f8d6ac | 348 | |
55f8d6ac JK |
349 | static void dummy_signal(int sig) |
350 | { | |
351 | } | |
55f8d6ac | 352 | |
d0f294ce JK |
353 | /* If we have signalfd, we mask out the signals we want to handle and then |
354 | * use signalfd to listen for them. We rely on whatever the current signal | |
355 | * handler is to dispatch the signals when we receive them. | |
356 | */ | |
357 | static void sigfd_handler(void *opaque) | |
358 | { | |
e0efb993 | 359 | int fd = (intptr_t)opaque; |
d0f294ce JK |
360 | struct qemu_signalfd_siginfo info; |
361 | struct sigaction action; | |
362 | ssize_t len; | |
363 | ||
364 | while (1) { | |
365 | do { | |
366 | len = read(fd, &info, sizeof(info)); | |
367 | } while (len == -1 && errno == EINTR); | |
368 | ||
369 | if (len == -1 && errno == EAGAIN) { | |
370 | break; | |
371 | } | |
372 | ||
373 | if (len != sizeof(info)) { | |
374 | printf("read from sigfd returned %zd: %m\n", len); | |
375 | return; | |
376 | } | |
377 | ||
378 | sigaction(info.ssi_signo, NULL, &action); | |
379 | if ((action.sa_flags & SA_SIGINFO) && action.sa_sigaction) { | |
380 | action.sa_sigaction(info.ssi_signo, | |
381 | (siginfo_t *)&info, NULL); | |
382 | } else if (action.sa_handler) { | |
383 | action.sa_handler(info.ssi_signo); | |
384 | } | |
385 | } | |
386 | } | |
387 | ||
712ae480 | 388 | static int qemu_signal_init(void) |
d0f294ce JK |
389 | { |
390 | int sigfd; | |
712ae480 | 391 | sigset_t set; |
d0f294ce | 392 | |
712ae480 PB |
393 | #ifdef CONFIG_IOTHREAD |
394 | /* SIGUSR2 used by posix-aio-compat.c */ | |
395 | sigemptyset(&set); | |
396 | sigaddset(&set, SIGUSR2); | |
397 | pthread_sigmask(SIG_UNBLOCK, &set, NULL); | |
398 | ||
399 | sigemptyset(&set); | |
400 | sigaddset(&set, SIGIO); | |
401 | sigaddset(&set, SIGALRM); | |
402 | sigaddset(&set, SIG_IPI); | |
403 | sigaddset(&set, SIGBUS); | |
404 | pthread_sigmask(SIG_BLOCK, &set, NULL); | |
405 | #else | |
406 | sigemptyset(&set); | |
407 | sigaddset(&set, SIGBUS); | |
408 | if (kvm_enabled()) { | |
409 | /* | |
410 | * We need to process timer signals synchronously to avoid a race | |
411 | * between exit_request check and KVM vcpu entry. | |
412 | */ | |
413 | sigaddset(&set, SIGIO); | |
414 | sigaddset(&set, SIGALRM); | |
415 | } | |
416 | #endif | |
417 | ||
418 | sigfd = qemu_signalfd(&set); | |
d0f294ce JK |
419 | if (sigfd == -1) { |
420 | fprintf(stderr, "failed to create signalfd\n"); | |
421 | return -errno; | |
422 | } | |
423 | ||
424 | fcntl_setfl(sigfd, O_NONBLOCK); | |
425 | ||
426 | qemu_set_fd_handler2(sigfd, NULL, sigfd_handler, NULL, | |
e0efb993 | 427 | (void *)(intptr_t)sigfd); |
d0f294ce JK |
428 | |
429 | return 0; | |
430 | } | |
431 | ||
714bd040 PB |
432 | static void qemu_kvm_init_cpu_signals(CPUState *env) |
433 | { | |
434 | int r; | |
435 | sigset_t set; | |
436 | struct sigaction sigact; | |
437 | ||
438 | memset(&sigact, 0, sizeof(sigact)); | |
439 | sigact.sa_handler = dummy_signal; | |
440 | sigaction(SIG_IPI, &sigact, NULL); | |
441 | ||
442 | #ifdef CONFIG_IOTHREAD | |
443 | pthread_sigmask(SIG_BLOCK, NULL, &set); | |
444 | sigdelset(&set, SIG_IPI); | |
445 | sigdelset(&set, SIGBUS); | |
446 | r = kvm_set_signal_mask(env, &set); | |
447 | if (r) { | |
448 | fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r)); | |
449 | exit(1); | |
450 | } | |
451 | #else | |
452 | sigemptyset(&set); | |
453 | sigaddset(&set, SIG_IPI); | |
454 | sigaddset(&set, SIGIO); | |
455 | sigaddset(&set, SIGALRM); | |
456 | pthread_sigmask(SIG_BLOCK, &set, NULL); | |
457 | ||
458 | pthread_sigmask(SIG_BLOCK, NULL, &set); | |
459 | sigdelset(&set, SIGIO); | |
460 | sigdelset(&set, SIGALRM); | |
461 | #endif | |
462 | sigdelset(&set, SIG_IPI); | |
463 | sigdelset(&set, SIGBUS); | |
464 | r = kvm_set_signal_mask(env, &set); | |
465 | if (r) { | |
466 | fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r)); | |
467 | exit(1); | |
468 | } | |
469 | } | |
470 | ||
471 | static void qemu_tcg_init_cpu_signals(void) | |
472 | { | |
473 | #ifdef CONFIG_IOTHREAD | |
474 | sigset_t set; | |
475 | struct sigaction sigact; | |
476 | ||
477 | memset(&sigact, 0, sizeof(sigact)); | |
478 | sigact.sa_handler = cpu_signal; | |
479 | sigaction(SIG_IPI, &sigact, NULL); | |
480 | ||
481 | sigemptyset(&set); | |
482 | sigaddset(&set, SIG_IPI); | |
483 | pthread_sigmask(SIG_UNBLOCK, &set, NULL); | |
484 | #endif | |
485 | } | |
486 | ||
55f8d6ac JK |
487 | #else /* _WIN32 */ |
488 | ||
296af7c9 BS |
489 | HANDLE qemu_event_handle; |
490 | ||
491 | static void dummy_event_handler(void *opaque) | |
492 | { | |
493 | } | |
494 | ||
495 | static int qemu_event_init(void) | |
496 | { | |
497 | qemu_event_handle = CreateEvent(NULL, FALSE, FALSE, NULL); | |
498 | if (!qemu_event_handle) { | |
499 | fprintf(stderr, "Failed CreateEvent: %ld\n", GetLastError()); | |
500 | return -1; | |
501 | } | |
502 | qemu_add_wait_object(qemu_event_handle, dummy_event_handler, NULL); | |
503 | return 0; | |
504 | } | |
505 | ||
506 | static void qemu_event_increment(void) | |
507 | { | |
508 | if (!SetEvent(qemu_event_handle)) { | |
509 | fprintf(stderr, "qemu_event_increment: SetEvent failed: %ld\n", | |
510 | GetLastError()); | |
511 | exit (1); | |
512 | } | |
513 | } | |
9a36085b | 514 | |
712ae480 PB |
515 | static int qemu_signal_init(void) |
516 | { | |
517 | return 0; | |
518 | } | |
519 | ||
ff48eb5f JK |
520 | static void qemu_kvm_init_cpu_signals(CPUState *env) |
521 | { | |
714bd040 PB |
522 | abort(); |
523 | } | |
ff48eb5f | 524 | |
714bd040 PB |
525 | static void qemu_tcg_init_cpu_signals(void) |
526 | { | |
ff48eb5f | 527 | } |
714bd040 | 528 | #endif /* _WIN32 */ |
ff48eb5f | 529 | |
714bd040 | 530 | #ifndef CONFIG_IOTHREAD |
296af7c9 BS |
531 | int qemu_init_main_loop(void) |
532 | { | |
d0f294ce JK |
533 | int ret; |
534 | ||
712ae480 | 535 | ret = qemu_signal_init(); |
d0f294ce JK |
536 | if (ret) { |
537 | return ret; | |
538 | } | |
3c638d06 | 539 | |
6d9cb73c | 540 | qemu_init_sigbus(); |
3c638d06 | 541 | |
296af7c9 BS |
542 | return qemu_event_init(); |
543 | } | |
544 | ||
7277e027 BS |
545 | void qemu_main_loop_start(void) |
546 | { | |
547 | } | |
548 | ||
296af7c9 BS |
549 | void qemu_init_vcpu(void *_env) |
550 | { | |
551 | CPUState *env = _env; | |
84b4915d | 552 | int r; |
296af7c9 BS |
553 | |
554 | env->nr_cores = smp_cores; | |
555 | env->nr_threads = smp_threads; | |
84b4915d JK |
556 | |
557 | if (kvm_enabled()) { | |
558 | r = kvm_init_vcpu(env); | |
559 | if (r < 0) { | |
560 | fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r)); | |
561 | exit(1); | |
562 | } | |
ff48eb5f | 563 | qemu_kvm_init_cpu_signals(env); |
714bd040 PB |
564 | } else { |
565 | qemu_tcg_init_cpu_signals(); | |
84b4915d | 566 | } |
296af7c9 BS |
567 | } |
568 | ||
b7680cb6 | 569 | int qemu_cpu_is_self(void *env) |
296af7c9 BS |
570 | { |
571 | return 1; | |
572 | } | |
573 | ||
e82bcec2 MT |
574 | void run_on_cpu(CPUState *env, void (*func)(void *data), void *data) |
575 | { | |
576 | func(data); | |
577 | } | |
578 | ||
296af7c9 BS |
579 | void resume_all_vcpus(void) |
580 | { | |
581 | } | |
582 | ||
583 | void pause_all_vcpus(void) | |
584 | { | |
585 | } | |
586 | ||
587 | void qemu_cpu_kick(void *env) | |
588 | { | |
296af7c9 BS |
589 | } |
590 | ||
46d62fac JK |
591 | void qemu_cpu_kick_self(void) |
592 | { | |
593 | #ifndef _WIN32 | |
594 | assert(cpu_single_env); | |
595 | ||
596 | raise(SIG_IPI); | |
597 | #else | |
598 | abort(); | |
599 | #endif | |
296af7c9 BS |
600 | } |
601 | ||
602 | void qemu_notify_event(void) | |
603 | { | |
604 | CPUState *env = cpu_single_env; | |
605 | ||
606 | qemu_event_increment (); | |
607 | if (env) { | |
608 | cpu_exit(env); | |
609 | } | |
610 | if (next_cpu && env != next_cpu) { | |
611 | cpu_exit(next_cpu); | |
612 | } | |
38145df2 | 613 | exit_request = 1; |
296af7c9 BS |
614 | } |
615 | ||
616 | void qemu_mutex_lock_iothread(void) {} | |
617 | void qemu_mutex_unlock_iothread(void) {} | |
618 | ||
b4a3d965 JK |
619 | void cpu_stop_current(void) |
620 | { | |
621 | } | |
622 | ||
296af7c9 BS |
623 | void vm_stop(int reason) |
624 | { | |
625 | do_vm_stop(reason); | |
626 | } | |
627 | ||
628 | #else /* CONFIG_IOTHREAD */ | |
629 | ||
296af7c9 BS |
630 | QemuMutex qemu_global_mutex; |
631 | static QemuMutex qemu_fair_mutex; | |
632 | ||
633 | static QemuThread io_thread; | |
634 | ||
635 | static QemuThread *tcg_cpu_thread; | |
636 | static QemuCond *tcg_halt_cond; | |
637 | ||
638 | static int qemu_system_ready; | |
639 | /* cpu creation */ | |
640 | static QemuCond qemu_cpu_cond; | |
641 | /* system init */ | |
642 | static QemuCond qemu_system_cond; | |
643 | static QemuCond qemu_pause_cond; | |
e82bcec2 | 644 | static QemuCond qemu_work_cond; |
296af7c9 | 645 | |
296af7c9 BS |
646 | int qemu_init_main_loop(void) |
647 | { | |
648 | int ret; | |
649 | ||
6d9cb73c | 650 | qemu_init_sigbus(); |
3c638d06 | 651 | |
712ae480 | 652 | ret = qemu_signal_init(); |
0ab07c62 | 653 | if (ret) { |
a8486bc9 | 654 | return ret; |
0ab07c62 | 655 | } |
a8486bc9 MT |
656 | |
657 | /* Note eventfd must be drained before signalfd handlers run */ | |
296af7c9 | 658 | ret = qemu_event_init(); |
0ab07c62 | 659 | if (ret) { |
296af7c9 | 660 | return ret; |
0ab07c62 | 661 | } |
296af7c9 | 662 | |
ed94592b | 663 | qemu_cond_init(&qemu_cpu_cond); |
f8ca7b43 | 664 | qemu_cond_init(&qemu_system_cond); |
ed94592b AL |
665 | qemu_cond_init(&qemu_pause_cond); |
666 | qemu_cond_init(&qemu_work_cond); | |
296af7c9 BS |
667 | qemu_mutex_init(&qemu_fair_mutex); |
668 | qemu_mutex_init(&qemu_global_mutex); | |
669 | qemu_mutex_lock(&qemu_global_mutex); | |
670 | ||
b7680cb6 | 671 | qemu_thread_get_self(&io_thread); |
296af7c9 BS |
672 | |
673 | return 0; | |
674 | } | |
675 | ||
7277e027 BS |
676 | void qemu_main_loop_start(void) |
677 | { | |
678 | qemu_system_ready = 1; | |
679 | qemu_cond_broadcast(&qemu_system_cond); | |
680 | } | |
681 | ||
e82bcec2 MT |
682 | void run_on_cpu(CPUState *env, void (*func)(void *data), void *data) |
683 | { | |
684 | struct qemu_work_item wi; | |
685 | ||
b7680cb6 | 686 | if (qemu_cpu_is_self(env)) { |
e82bcec2 MT |
687 | func(data); |
688 | return; | |
689 | } | |
690 | ||
691 | wi.func = func; | |
692 | wi.data = data; | |
0ab07c62 | 693 | if (!env->queued_work_first) { |
e82bcec2 | 694 | env->queued_work_first = &wi; |
0ab07c62 | 695 | } else { |
e82bcec2 | 696 | env->queued_work_last->next = &wi; |
0ab07c62 | 697 | } |
e82bcec2 MT |
698 | env->queued_work_last = &wi; |
699 | wi.next = NULL; | |
700 | wi.done = false; | |
701 | ||
702 | qemu_cpu_kick(env); | |
703 | while (!wi.done) { | |
704 | CPUState *self_env = cpu_single_env; | |
705 | ||
706 | qemu_cond_wait(&qemu_work_cond, &qemu_global_mutex); | |
707 | cpu_single_env = self_env; | |
708 | } | |
709 | } | |
710 | ||
711 | static void flush_queued_work(CPUState *env) | |
712 | { | |
713 | struct qemu_work_item *wi; | |
714 | ||
0ab07c62 | 715 | if (!env->queued_work_first) { |
e82bcec2 | 716 | return; |
0ab07c62 | 717 | } |
e82bcec2 MT |
718 | |
719 | while ((wi = env->queued_work_first)) { | |
720 | env->queued_work_first = wi->next; | |
721 | wi->func(wi->data); | |
722 | wi->done = true; | |
723 | } | |
724 | env->queued_work_last = NULL; | |
725 | qemu_cond_broadcast(&qemu_work_cond); | |
726 | } | |
727 | ||
296af7c9 BS |
728 | static void qemu_wait_io_event_common(CPUState *env) |
729 | { | |
730 | if (env->stop) { | |
731 | env->stop = 0; | |
732 | env->stopped = 1; | |
733 | qemu_cond_signal(&qemu_pause_cond); | |
734 | } | |
e82bcec2 | 735 | flush_queued_work(env); |
aa2c364b | 736 | env->thread_kicked = false; |
296af7c9 BS |
737 | } |
738 | ||
6cabe1f3 | 739 | static void qemu_tcg_wait_io_event(void) |
296af7c9 | 740 | { |
6cabe1f3 JK |
741 | CPUState *env; |
742 | ||
16400322 | 743 | while (all_cpu_threads_idle()) { |
ab33fcda PB |
744 | /* Start accounting real time to the virtual clock if the CPUs |
745 | are idle. */ | |
746 | qemu_clock_warp(vm_clock); | |
9705fbb5 | 747 | qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex); |
16400322 | 748 | } |
296af7c9 BS |
749 | |
750 | qemu_mutex_unlock(&qemu_global_mutex); | |
751 | ||
752 | /* | |
753 | * Users of qemu_global_mutex can be starved, having no chance | |
754 | * to acquire it since this path will get to it first. | |
755 | * So use another lock to provide fairness. | |
756 | */ | |
757 | qemu_mutex_lock(&qemu_fair_mutex); | |
758 | qemu_mutex_unlock(&qemu_fair_mutex); | |
759 | ||
760 | qemu_mutex_lock(&qemu_global_mutex); | |
6cabe1f3 JK |
761 | |
762 | for (env = first_cpu; env != NULL; env = env->next_cpu) { | |
763 | qemu_wait_io_event_common(env); | |
764 | } | |
296af7c9 BS |
765 | } |
766 | ||
296af7c9 BS |
767 | static void qemu_kvm_wait_io_event(CPUState *env) |
768 | { | |
16400322 | 769 | while (cpu_thread_is_idle(env)) { |
9705fbb5 | 770 | qemu_cond_wait(env->halt_cond, &qemu_global_mutex); |
16400322 | 771 | } |
296af7c9 | 772 | |
5db5bdac | 773 | qemu_kvm_eat_signals(env); |
296af7c9 BS |
774 | qemu_wait_io_event_common(env); |
775 | } | |
776 | ||
7e97cd88 | 777 | static void *qemu_kvm_cpu_thread_fn(void *arg) |
296af7c9 BS |
778 | { |
779 | CPUState *env = arg; | |
84b4915d | 780 | int r; |
296af7c9 | 781 | |
6164e6d6 | 782 | qemu_mutex_lock(&qemu_global_mutex); |
b7680cb6 | 783 | qemu_thread_get_self(env->thread); |
dc7a09cf | 784 | env->thread_id = qemu_get_thread_id(); |
296af7c9 | 785 | |
84b4915d JK |
786 | r = kvm_init_vcpu(env); |
787 | if (r < 0) { | |
788 | fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r)); | |
789 | exit(1); | |
790 | } | |
296af7c9 | 791 | |
55f8d6ac | 792 | qemu_kvm_init_cpu_signals(env); |
296af7c9 BS |
793 | |
794 | /* signal CPU creation */ | |
296af7c9 BS |
795 | env->created = 1; |
796 | qemu_cond_signal(&qemu_cpu_cond); | |
797 | ||
798 | /* and wait for machine initialization */ | |
0ab07c62 | 799 | while (!qemu_system_ready) { |
e009894f | 800 | qemu_cond_wait(&qemu_system_cond, &qemu_global_mutex); |
0ab07c62 | 801 | } |
296af7c9 BS |
802 | |
803 | while (1) { | |
0ab07c62 | 804 | if (cpu_can_run(env)) { |
6792a57b | 805 | r = kvm_cpu_exec(env); |
83f338f7 | 806 | if (r == EXCP_DEBUG) { |
1009d2ed | 807 | cpu_handle_guest_debug(env); |
83f338f7 | 808 | } |
0ab07c62 | 809 | } |
296af7c9 BS |
810 | qemu_kvm_wait_io_event(env); |
811 | } | |
812 | ||
813 | return NULL; | |
814 | } | |
815 | ||
7e97cd88 | 816 | static void *qemu_tcg_cpu_thread_fn(void *arg) |
296af7c9 BS |
817 | { |
818 | CPUState *env = arg; | |
819 | ||
55f8d6ac | 820 | qemu_tcg_init_cpu_signals(); |
b7680cb6 | 821 | qemu_thread_get_self(env->thread); |
296af7c9 BS |
822 | |
823 | /* signal CPU creation */ | |
824 | qemu_mutex_lock(&qemu_global_mutex); | |
0ab07c62 | 825 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
dc7a09cf | 826 | env->thread_id = qemu_get_thread_id(); |
296af7c9 | 827 | env->created = 1; |
0ab07c62 | 828 | } |
296af7c9 BS |
829 | qemu_cond_signal(&qemu_cpu_cond); |
830 | ||
831 | /* and wait for machine initialization */ | |
0ab07c62 | 832 | while (!qemu_system_ready) { |
e009894f | 833 | qemu_cond_wait(&qemu_system_cond, &qemu_global_mutex); |
0ab07c62 | 834 | } |
296af7c9 BS |
835 | |
836 | while (1) { | |
472fb0c4 | 837 | cpu_exec_all(); |
cb842c90 | 838 | if (use_icount && qemu_next_icount_deadline() <= 0) { |
3b2319a3 PB |
839 | qemu_notify_event(); |
840 | } | |
6cabe1f3 | 841 | qemu_tcg_wait_io_event(); |
296af7c9 BS |
842 | } |
843 | ||
844 | return NULL; | |
845 | } | |
846 | ||
cc015e9a PB |
847 | static void qemu_cpu_kick_thread(CPUState *env) |
848 | { | |
849 | #ifndef _WIN32 | |
850 | int err; | |
851 | ||
852 | err = pthread_kill(env->thread->thread, SIG_IPI); | |
853 | if (err) { | |
854 | fprintf(stderr, "qemu:%s: %s", __func__, strerror(err)); | |
855 | exit(1); | |
856 | } | |
857 | #else /* _WIN32 */ | |
858 | if (!qemu_cpu_is_self(env)) { | |
859 | SuspendThread(env->thread->thread); | |
860 | cpu_signal(0); | |
861 | ResumeThread(env->thread->thread); | |
862 | } | |
863 | #endif | |
864 | } | |
865 | ||
296af7c9 BS |
866 | void qemu_cpu_kick(void *_env) |
867 | { | |
868 | CPUState *env = _env; | |
296af7c9 | 869 | |
296af7c9 | 870 | qemu_cond_broadcast(env->halt_cond); |
aa2c364b | 871 | if (!env->thread_kicked) { |
cc015e9a | 872 | qemu_cpu_kick_thread(env); |
aa2c364b JK |
873 | env->thread_kicked = true; |
874 | } | |
296af7c9 BS |
875 | } |
876 | ||
46d62fac | 877 | void qemu_cpu_kick_self(void) |
296af7c9 | 878 | { |
b55c22c6 | 879 | #ifndef _WIN32 |
46d62fac | 880 | assert(cpu_single_env); |
296af7c9 | 881 | |
46d62fac | 882 | if (!cpu_single_env->thread_kicked) { |
cc015e9a | 883 | qemu_cpu_kick_thread(cpu_single_env); |
46d62fac | 884 | cpu_single_env->thread_kicked = true; |
296af7c9 | 885 | } |
b55c22c6 PB |
886 | #else |
887 | abort(); | |
888 | #endif | |
296af7c9 BS |
889 | } |
890 | ||
b7680cb6 | 891 | int qemu_cpu_is_self(void *_env) |
296af7c9 | 892 | { |
296af7c9 | 893 | CPUState *env = _env; |
a8486bc9 | 894 | |
b7680cb6 | 895 | return qemu_thread_is_self(env->thread); |
296af7c9 BS |
896 | } |
897 | ||
296af7c9 BS |
898 | void qemu_mutex_lock_iothread(void) |
899 | { | |
900 | if (kvm_enabled()) { | |
296af7c9 | 901 | qemu_mutex_lock(&qemu_global_mutex); |
1a28cac3 MT |
902 | } else { |
903 | qemu_mutex_lock(&qemu_fair_mutex); | |
904 | if (qemu_mutex_trylock(&qemu_global_mutex)) { | |
cc015e9a | 905 | qemu_cpu_kick_thread(first_cpu); |
1a28cac3 MT |
906 | qemu_mutex_lock(&qemu_global_mutex); |
907 | } | |
908 | qemu_mutex_unlock(&qemu_fair_mutex); | |
909 | } | |
296af7c9 BS |
910 | } |
911 | ||
912 | void qemu_mutex_unlock_iothread(void) | |
913 | { | |
914 | qemu_mutex_unlock(&qemu_global_mutex); | |
915 | } | |
916 | ||
917 | static int all_vcpus_paused(void) | |
918 | { | |
919 | CPUState *penv = first_cpu; | |
920 | ||
921 | while (penv) { | |
0ab07c62 | 922 | if (!penv->stopped) { |
296af7c9 | 923 | return 0; |
0ab07c62 | 924 | } |
296af7c9 BS |
925 | penv = (CPUState *)penv->next_cpu; |
926 | } | |
927 | ||
928 | return 1; | |
929 | } | |
930 | ||
931 | void pause_all_vcpus(void) | |
932 | { | |
933 | CPUState *penv = first_cpu; | |
934 | ||
935 | while (penv) { | |
936 | penv->stop = 1; | |
296af7c9 BS |
937 | qemu_cpu_kick(penv); |
938 | penv = (CPUState *)penv->next_cpu; | |
939 | } | |
940 | ||
941 | while (!all_vcpus_paused()) { | |
be7d6c57 | 942 | qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex); |
296af7c9 BS |
943 | penv = first_cpu; |
944 | while (penv) { | |
1fbb22e5 | 945 | qemu_cpu_kick(penv); |
296af7c9 BS |
946 | penv = (CPUState *)penv->next_cpu; |
947 | } | |
948 | } | |
949 | } | |
950 | ||
951 | void resume_all_vcpus(void) | |
952 | { | |
953 | CPUState *penv = first_cpu; | |
954 | ||
955 | while (penv) { | |
956 | penv->stop = 0; | |
957 | penv->stopped = 0; | |
296af7c9 BS |
958 | qemu_cpu_kick(penv); |
959 | penv = (CPUState *)penv->next_cpu; | |
960 | } | |
961 | } | |
962 | ||
7e97cd88 | 963 | static void qemu_tcg_init_vcpu(void *_env) |
296af7c9 BS |
964 | { |
965 | CPUState *env = _env; | |
0ab07c62 | 966 | |
296af7c9 BS |
967 | /* share a single thread for all cpus with TCG */ |
968 | if (!tcg_cpu_thread) { | |
969 | env->thread = qemu_mallocz(sizeof(QemuThread)); | |
970 | env->halt_cond = qemu_mallocz(sizeof(QemuCond)); | |
971 | qemu_cond_init(env->halt_cond); | |
7e97cd88 | 972 | qemu_thread_create(env->thread, qemu_tcg_cpu_thread_fn, env); |
0ab07c62 | 973 | while (env->created == 0) { |
18a85728 | 974 | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
0ab07c62 | 975 | } |
296af7c9 BS |
976 | tcg_cpu_thread = env->thread; |
977 | tcg_halt_cond = env->halt_cond; | |
978 | } else { | |
979 | env->thread = tcg_cpu_thread; | |
980 | env->halt_cond = tcg_halt_cond; | |
981 | } | |
982 | } | |
983 | ||
7e97cd88 | 984 | static void qemu_kvm_start_vcpu(CPUState *env) |
296af7c9 BS |
985 | { |
986 | env->thread = qemu_mallocz(sizeof(QemuThread)); | |
987 | env->halt_cond = qemu_mallocz(sizeof(QemuCond)); | |
988 | qemu_cond_init(env->halt_cond); | |
7e97cd88 | 989 | qemu_thread_create(env->thread, qemu_kvm_cpu_thread_fn, env); |
0ab07c62 | 990 | while (env->created == 0) { |
18a85728 | 991 | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
0ab07c62 | 992 | } |
296af7c9 BS |
993 | } |
994 | ||
995 | void qemu_init_vcpu(void *_env) | |
996 | { | |
997 | CPUState *env = _env; | |
998 | ||
999 | env->nr_cores = smp_cores; | |
1000 | env->nr_threads = smp_threads; | |
0ab07c62 | 1001 | if (kvm_enabled()) { |
7e97cd88 | 1002 | qemu_kvm_start_vcpu(env); |
0ab07c62 | 1003 | } else { |
7e97cd88 | 1004 | qemu_tcg_init_vcpu(env); |
0ab07c62 | 1005 | } |
296af7c9 BS |
1006 | } |
1007 | ||
1008 | void qemu_notify_event(void) | |
1009 | { | |
1010 | qemu_event_increment(); | |
1011 | } | |
1012 | ||
b4a3d965 | 1013 | void cpu_stop_current(void) |
296af7c9 | 1014 | { |
b4a3d965 | 1015 | if (cpu_single_env) { |
67bb172f | 1016 | cpu_single_env->stop = 0; |
b4a3d965 JK |
1017 | cpu_single_env->stopped = 1; |
1018 | cpu_exit(cpu_single_env); | |
67bb172f | 1019 | qemu_cond_signal(&qemu_pause_cond); |
b4a3d965 | 1020 | } |
296af7c9 BS |
1021 | } |
1022 | ||
1023 | void vm_stop(int reason) | |
1024 | { | |
b7680cb6 | 1025 | if (!qemu_thread_is_self(&io_thread)) { |
296af7c9 BS |
1026 | qemu_system_vmstop_request(reason); |
1027 | /* | |
1028 | * FIXME: should not return to device code in case | |
1029 | * vm_stop() has been requested. | |
1030 | */ | |
b4a3d965 | 1031 | cpu_stop_current(); |
296af7c9 BS |
1032 | return; |
1033 | } | |
1034 | do_vm_stop(reason); | |
1035 | } | |
1036 | ||
1037 | #endif | |
1038 | ||
6792a57b | 1039 | static int tcg_cpu_exec(CPUState *env) |
296af7c9 BS |
1040 | { |
1041 | int ret; | |
1042 | #ifdef CONFIG_PROFILER | |
1043 | int64_t ti; | |
1044 | #endif | |
1045 | ||
1046 | #ifdef CONFIG_PROFILER | |
1047 | ti = profile_getclock(); | |
1048 | #endif | |
1049 | if (use_icount) { | |
1050 | int64_t count; | |
1051 | int decr; | |
1052 | qemu_icount -= (env->icount_decr.u16.low + env->icount_extra); | |
1053 | env->icount_decr.u16.low = 0; | |
1054 | env->icount_extra = 0; | |
cb842c90 | 1055 | count = qemu_icount_round(qemu_next_icount_deadline()); |
296af7c9 BS |
1056 | qemu_icount += count; |
1057 | decr = (count > 0xffff) ? 0xffff : count; | |
1058 | count -= decr; | |
1059 | env->icount_decr.u16.low = decr; | |
1060 | env->icount_extra = count; | |
1061 | } | |
1062 | ret = cpu_exec(env); | |
1063 | #ifdef CONFIG_PROFILER | |
1064 | qemu_time += profile_getclock() - ti; | |
1065 | #endif | |
1066 | if (use_icount) { | |
1067 | /* Fold pending instructions back into the | |
1068 | instruction counter, and clear the interrupt flag. */ | |
1069 | qemu_icount -= (env->icount_decr.u16.low | |
1070 | + env->icount_extra); | |
1071 | env->icount_decr.u32 = 0; | |
1072 | env->icount_extra = 0; | |
1073 | } | |
1074 | return ret; | |
1075 | } | |
1076 | ||
472fb0c4 | 1077 | bool cpu_exec_all(void) |
296af7c9 | 1078 | { |
9a36085b JK |
1079 | int r; |
1080 | ||
ab33fcda PB |
1081 | /* Account partial waits to the vm_clock. */ |
1082 | qemu_clock_warp(vm_clock); | |
1083 | ||
0ab07c62 | 1084 | if (next_cpu == NULL) { |
296af7c9 | 1085 | next_cpu = first_cpu; |
0ab07c62 | 1086 | } |
c629a4bc | 1087 | for (; next_cpu != NULL && !exit_request; next_cpu = next_cpu->next_cpu) { |
345f4426 | 1088 | CPUState *env = next_cpu; |
296af7c9 BS |
1089 | |
1090 | qemu_clock_enable(vm_clock, | |
345f4426 | 1091 | (env->singlestep_enabled & SSTEP_NOTIMER) == 0); |
296af7c9 | 1092 | |
8cf3f22b | 1093 | #ifndef CONFIG_IOTHREAD |
0ab07c62 | 1094 | if (qemu_alarm_pending()) { |
296af7c9 | 1095 | break; |
0ab07c62 | 1096 | } |
8cf3f22b | 1097 | #endif |
3c638d06 | 1098 | if (cpu_can_run(env)) { |
9a36085b | 1099 | if (kvm_enabled()) { |
6792a57b | 1100 | r = kvm_cpu_exec(env); |
9a36085b | 1101 | qemu_kvm_eat_signals(env); |
6792a57b JK |
1102 | } else { |
1103 | r = tcg_cpu_exec(env); | |
9a36085b JK |
1104 | } |
1105 | if (r == EXCP_DEBUG) { | |
1009d2ed | 1106 | cpu_handle_guest_debug(env); |
3c638d06 JK |
1107 | break; |
1108 | } | |
df646dfd | 1109 | } else if (env->stop || env->stopped) { |
296af7c9 BS |
1110 | break; |
1111 | } | |
1112 | } | |
c629a4bc | 1113 | exit_request = 0; |
16400322 | 1114 | return !all_cpu_threads_idle(); |
296af7c9 BS |
1115 | } |
1116 | ||
1117 | void set_numa_modes(void) | |
1118 | { | |
1119 | CPUState *env; | |
1120 | int i; | |
1121 | ||
1122 | for (env = first_cpu; env != NULL; env = env->next_cpu) { | |
1123 | for (i = 0; i < nb_numa_nodes; i++) { | |
1124 | if (node_cpumask[i] & (1 << env->cpu_index)) { | |
1125 | env->numa_node = i; | |
1126 | } | |
1127 | } | |
1128 | } | |
1129 | } | |
1130 | ||
1131 | void set_cpu_log(const char *optarg) | |
1132 | { | |
1133 | int mask; | |
1134 | const CPULogItem *item; | |
1135 | ||
1136 | mask = cpu_str_to_log_mask(optarg); | |
1137 | if (!mask) { | |
1138 | printf("Log items (comma separated):\n"); | |
1139 | for (item = cpu_log_items; item->mask != 0; item++) { | |
1140 | printf("%-10s %s\n", item->name, item->help); | |
1141 | } | |
1142 | exit(1); | |
1143 | } | |
1144 | cpu_set_log(mask); | |
1145 | } | |
29e922b6 | 1146 | |
c235d738 MF |
1147 | void set_cpu_log_filename(const char *optarg) |
1148 | { | |
1149 | cpu_set_log_filename(optarg); | |
1150 | } | |
1151 | ||
29e922b6 BS |
1152 | /* Return the virtual CPU time, based on the instruction counter. */ |
1153 | int64_t cpu_get_icount(void) | |
1154 | { | |
1155 | int64_t icount; | |
1156 | CPUState *env = cpu_single_env;; | |
1157 | ||
1158 | icount = qemu_icount; | |
1159 | if (env) { | |
1160 | if (!can_do_io(env)) { | |
1161 | fprintf(stderr, "Bad clock read\n"); | |
1162 | } | |
1163 | icount -= (env->icount_decr.u16.low + env->icount_extra); | |
1164 | } | |
1165 | return qemu_icount_bias + (icount << icount_time_shift); | |
1166 | } | |
262353cb | 1167 | |
9a78eead | 1168 | void list_cpus(FILE *f, fprintf_function cpu_fprintf, const char *optarg) |
262353cb BS |
1169 | { |
1170 | /* XXX: implement xxx_cpu_list for targets that still miss it */ | |
1171 | #if defined(cpu_list_id) | |
1172 | cpu_list_id(f, cpu_fprintf, optarg); | |
1173 | #elif defined(cpu_list) | |
1174 | cpu_list(f, cpu_fprintf); /* deprecated */ | |
1175 | #endif | |
1176 | } |