root / cpus.c @ 09f1bbcd
History | View | Annotate | Download (32.7 kB)
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 |
#include "qmp-commands.h" |
34 |
|
35 |
#include "qemu-thread.h" |
36 |
#include "cpus.h" |
37 |
#include "qtest.h" |
38 |
#include "main-loop.h" |
39 |
|
40 |
#ifndef _WIN32
|
41 |
#include "compatfd.h" |
42 |
#endif
|
43 |
|
44 |
#ifdef CONFIG_LINUX
|
45 |
|
46 |
#include <sys/prctl.h> |
47 |
|
48 |
#ifndef PR_MCE_KILL
|
49 |
#define PR_MCE_KILL 33 |
50 |
#endif
|
51 |
|
52 |
#ifndef PR_MCE_KILL_SET
|
53 |
#define PR_MCE_KILL_SET 1 |
54 |
#endif
|
55 |
|
56 |
#ifndef PR_MCE_KILL_EARLY
|
57 |
#define PR_MCE_KILL_EARLY 1 |
58 |
#endif
|
59 |
|
60 |
#endif /* CONFIG_LINUX */ |
61 |
|
62 |
static CPUArchState *next_cpu;
|
63 |
|
64 |
/***********************************************************/
|
65 |
/* guest cycle counter */
|
66 |
|
67 |
/* Conversion factor from emulated instructions to virtual clock ticks. */
|
68 |
static int icount_time_shift; |
69 |
/* Arbitrarily pick 1MIPS as the minimum allowable speed. */
|
70 |
#define MAX_ICOUNT_SHIFT 10 |
71 |
/* Compensate for varying guest execution speed. */
|
72 |
static int64_t qemu_icount_bias;
|
73 |
static QEMUTimer *icount_rt_timer;
|
74 |
static QEMUTimer *icount_vm_timer;
|
75 |
static QEMUTimer *icount_warp_timer;
|
76 |
static int64_t vm_clock_warp_start;
|
77 |
static int64_t qemu_icount;
|
78 |
|
79 |
typedef struct TimersState { |
80 |
int64_t cpu_ticks_prev; |
81 |
int64_t cpu_ticks_offset; |
82 |
int64_t cpu_clock_offset; |
83 |
int32_t cpu_ticks_enabled; |
84 |
int64_t dummy; |
85 |
} TimersState; |
86 |
|
87 |
TimersState timers_state; |
88 |
|
89 |
/* Return the virtual CPU time, based on the instruction counter. */
|
90 |
int64_t cpu_get_icount(void)
|
91 |
{ |
92 |
int64_t icount; |
93 |
CPUArchState *env = cpu_single_env; |
94 |
|
95 |
icount = qemu_icount; |
96 |
if (env) {
|
97 |
if (!can_do_io(env)) {
|
98 |
fprintf(stderr, "Bad clock read\n");
|
99 |
} |
100 |
icount -= (env->icount_decr.u16.low + env->icount_extra); |
101 |
} |
102 |
return qemu_icount_bias + (icount << icount_time_shift);
|
103 |
} |
104 |
|
105 |
/* return the host CPU cycle counter and handle stop/restart */
|
106 |
int64_t cpu_get_ticks(void)
|
107 |
{ |
108 |
if (use_icount) {
|
109 |
return cpu_get_icount();
|
110 |
} |
111 |
if (!timers_state.cpu_ticks_enabled) {
|
112 |
return timers_state.cpu_ticks_offset;
|
113 |
} else {
|
114 |
int64_t ticks; |
115 |
ticks = cpu_get_real_ticks(); |
116 |
if (timers_state.cpu_ticks_prev > ticks) {
|
117 |
/* Note: non increasing ticks may happen if the host uses
|
118 |
software suspend */
|
119 |
timers_state.cpu_ticks_offset += timers_state.cpu_ticks_prev - ticks; |
120 |
} |
121 |
timers_state.cpu_ticks_prev = ticks; |
122 |
return ticks + timers_state.cpu_ticks_offset;
|
123 |
} |
124 |
} |
125 |
|
126 |
/* return the host CPU monotonic timer and handle stop/restart */
|
127 |
int64_t cpu_get_clock(void)
|
128 |
{ |
129 |
int64_t ti; |
130 |
if (!timers_state.cpu_ticks_enabled) {
|
131 |
return timers_state.cpu_clock_offset;
|
132 |
} else {
|
133 |
ti = get_clock(); |
134 |
return ti + timers_state.cpu_clock_offset;
|
135 |
} |
136 |
} |
137 |
|
138 |
/* enable cpu_get_ticks() */
|
139 |
void cpu_enable_ticks(void) |
140 |
{ |
141 |
if (!timers_state.cpu_ticks_enabled) {
|
142 |
timers_state.cpu_ticks_offset -= cpu_get_real_ticks(); |
143 |
timers_state.cpu_clock_offset -= get_clock(); |
144 |
timers_state.cpu_ticks_enabled = 1;
|
145 |
} |
146 |
} |
147 |
|
148 |
/* disable cpu_get_ticks() : the clock is stopped. You must not call
|
149 |
cpu_get_ticks() after that. */
|
150 |
void cpu_disable_ticks(void) |
151 |
{ |
152 |
if (timers_state.cpu_ticks_enabled) {
|
153 |
timers_state.cpu_ticks_offset = cpu_get_ticks(); |
154 |
timers_state.cpu_clock_offset = cpu_get_clock(); |
155 |
timers_state.cpu_ticks_enabled = 0;
|
156 |
} |
157 |
} |
158 |
|
159 |
/* Correlation between real and virtual time is always going to be
|
160 |
fairly approximate, so ignore small variation.
|
161 |
When the guest is idle real and virtual time will be aligned in
|
162 |
the IO wait loop. */
|
163 |
#define ICOUNT_WOBBLE (get_ticks_per_sec() / 10) |
164 |
|
165 |
static void icount_adjust(void) |
166 |
{ |
167 |
int64_t cur_time; |
168 |
int64_t cur_icount; |
169 |
int64_t delta; |
170 |
static int64_t last_delta;
|
171 |
/* If the VM is not running, then do nothing. */
|
172 |
if (!runstate_is_running()) {
|
173 |
return;
|
174 |
} |
175 |
cur_time = cpu_get_clock(); |
176 |
cur_icount = qemu_get_clock_ns(vm_clock); |
177 |
delta = cur_icount - cur_time; |
178 |
/* FIXME: This is a very crude algorithm, somewhat prone to oscillation. */
|
179 |
if (delta > 0 |
180 |
&& last_delta + ICOUNT_WOBBLE < delta * 2
|
181 |
&& icount_time_shift > 0) {
|
182 |
/* The guest is getting too far ahead. Slow time down. */
|
183 |
icount_time_shift--; |
184 |
} |
185 |
if (delta < 0 |
186 |
&& last_delta - ICOUNT_WOBBLE > delta * 2
|
187 |
&& icount_time_shift < MAX_ICOUNT_SHIFT) { |
188 |
/* The guest is getting too far behind. Speed time up. */
|
189 |
icount_time_shift++; |
190 |
} |
191 |
last_delta = delta; |
192 |
qemu_icount_bias = cur_icount - (qemu_icount << icount_time_shift); |
193 |
} |
194 |
|
195 |
static void icount_adjust_rt(void *opaque) |
196 |
{ |
197 |
qemu_mod_timer(icount_rt_timer, |
198 |
qemu_get_clock_ms(rt_clock) + 1000);
|
199 |
icount_adjust(); |
200 |
} |
201 |
|
202 |
static void icount_adjust_vm(void *opaque) |
203 |
{ |
204 |
qemu_mod_timer(icount_vm_timer, |
205 |
qemu_get_clock_ns(vm_clock) + get_ticks_per_sec() / 10);
|
206 |
icount_adjust(); |
207 |
} |
208 |
|
209 |
static int64_t qemu_icount_round(int64_t count)
|
210 |
{ |
211 |
return (count + (1 << icount_time_shift) - 1) >> icount_time_shift; |
212 |
} |
213 |
|
214 |
static void icount_warp_rt(void *opaque) |
215 |
{ |
216 |
if (vm_clock_warp_start == -1) { |
217 |
return;
|
218 |
} |
219 |
|
220 |
if (runstate_is_running()) {
|
221 |
int64_t clock = qemu_get_clock_ns(rt_clock); |
222 |
int64_t warp_delta = clock - vm_clock_warp_start; |
223 |
if (use_icount == 1) { |
224 |
qemu_icount_bias += warp_delta; |
225 |
} else {
|
226 |
/*
|
227 |
* In adaptive mode, do not let the vm_clock run too
|
228 |
* far ahead of real time.
|
229 |
*/
|
230 |
int64_t cur_time = cpu_get_clock(); |
231 |
int64_t cur_icount = qemu_get_clock_ns(vm_clock); |
232 |
int64_t delta = cur_time - cur_icount; |
233 |
qemu_icount_bias += MIN(warp_delta, delta); |
234 |
} |
235 |
if (qemu_clock_expired(vm_clock)) {
|
236 |
qemu_notify_event(); |
237 |
} |
238 |
} |
239 |
vm_clock_warp_start = -1;
|
240 |
} |
241 |
|
242 |
void qtest_clock_warp(int64_t dest)
|
243 |
{ |
244 |
int64_t clock = qemu_get_clock_ns(vm_clock); |
245 |
assert(qtest_enabled()); |
246 |
while (clock < dest) {
|
247 |
int64_t deadline = qemu_clock_deadline(vm_clock); |
248 |
int64_t warp = MIN(dest - clock, deadline); |
249 |
qemu_icount_bias += warp; |
250 |
qemu_run_timers(vm_clock); |
251 |
clock = qemu_get_clock_ns(vm_clock); |
252 |
} |
253 |
qemu_notify_event(); |
254 |
} |
255 |
|
256 |
void qemu_clock_warp(QEMUClock *clock)
|
257 |
{ |
258 |
int64_t deadline; |
259 |
|
260 |
/*
|
261 |
* There are too many global variables to make the "warp" behavior
|
262 |
* applicable to other clocks. But a clock argument removes the
|
263 |
* need for if statements all over the place.
|
264 |
*/
|
265 |
if (clock != vm_clock || !use_icount) {
|
266 |
return;
|
267 |
} |
268 |
|
269 |
/*
|
270 |
* If the CPUs have been sleeping, advance the vm_clock timer now. This
|
271 |
* ensures that the deadline for the timer is computed correctly below.
|
272 |
* This also makes sure that the insn counter is synchronized before the
|
273 |
* CPU starts running, in case the CPU is woken by an event other than
|
274 |
* the earliest vm_clock timer.
|
275 |
*/
|
276 |
icount_warp_rt(NULL);
|
277 |
if (!all_cpu_threads_idle() || !qemu_clock_has_timers(vm_clock)) {
|
278 |
qemu_del_timer(icount_warp_timer); |
279 |
return;
|
280 |
} |
281 |
|
282 |
if (qtest_enabled()) {
|
283 |
/* When testing, qtest commands advance icount. */
|
284 |
return;
|
285 |
} |
286 |
|
287 |
vm_clock_warp_start = qemu_get_clock_ns(rt_clock); |
288 |
deadline = qemu_clock_deadline(vm_clock); |
289 |
if (deadline > 0) { |
290 |
/*
|
291 |
* Ensure the vm_clock proceeds even when the virtual CPU goes to
|
292 |
* sleep. Otherwise, the CPU might be waiting for a future timer
|
293 |
* interrupt to wake it up, but the interrupt never comes because
|
294 |
* the vCPU isn't running any insns and thus doesn't advance the
|
295 |
* vm_clock.
|
296 |
*
|
297 |
* An extreme solution for this problem would be to never let VCPUs
|
298 |
* sleep in icount mode if there is a pending vm_clock timer; rather
|
299 |
* time could just advance to the next vm_clock event. Instead, we
|
300 |
* do stop VCPUs and only advance vm_clock after some "real" time,
|
301 |
* (related to the time left until the next event) has passed. This
|
302 |
* rt_clock timer will do this. This avoids that the warps are too
|
303 |
* visible externally---for example, you will not be sending network
|
304 |
* packets continuously instead of every 100ms.
|
305 |
*/
|
306 |
qemu_mod_timer(icount_warp_timer, vm_clock_warp_start + deadline); |
307 |
} else {
|
308 |
qemu_notify_event(); |
309 |
} |
310 |
} |
311 |
|
312 |
static const VMStateDescription vmstate_timers = { |
313 |
.name = "timer",
|
314 |
.version_id = 2,
|
315 |
.minimum_version_id = 1,
|
316 |
.minimum_version_id_old = 1,
|
317 |
.fields = (VMStateField[]) { |
318 |
VMSTATE_INT64(cpu_ticks_offset, TimersState), |
319 |
VMSTATE_INT64(dummy, TimersState), |
320 |
VMSTATE_INT64_V(cpu_clock_offset, TimersState, 2),
|
321 |
VMSTATE_END_OF_LIST() |
322 |
} |
323 |
}; |
324 |
|
325 |
void configure_icount(const char *option) |
326 |
{ |
327 |
vmstate_register(NULL, 0, &vmstate_timers, &timers_state); |
328 |
if (!option) {
|
329 |
return;
|
330 |
} |
331 |
|
332 |
icount_warp_timer = qemu_new_timer_ns(rt_clock, icount_warp_rt, NULL);
|
333 |
if (strcmp(option, "auto") != 0) { |
334 |
icount_time_shift = strtol(option, NULL, 0); |
335 |
use_icount = 1;
|
336 |
return;
|
337 |
} |
338 |
|
339 |
use_icount = 2;
|
340 |
|
341 |
/* 125MIPS seems a reasonable initial guess at the guest speed.
|
342 |
It will be corrected fairly quickly anyway. */
|
343 |
icount_time_shift = 3;
|
344 |
|
345 |
/* Have both realtime and virtual time triggers for speed adjustment.
|
346 |
The realtime trigger catches emulated time passing too slowly,
|
347 |
the virtual time trigger catches emulated time passing too fast.
|
348 |
Realtime triggers occur even when idle, so use them less frequently
|
349 |
than VM triggers. */
|
350 |
icount_rt_timer = qemu_new_timer_ms(rt_clock, icount_adjust_rt, NULL);
|
351 |
qemu_mod_timer(icount_rt_timer, |
352 |
qemu_get_clock_ms(rt_clock) + 1000);
|
353 |
icount_vm_timer = qemu_new_timer_ns(vm_clock, icount_adjust_vm, NULL);
|
354 |
qemu_mod_timer(icount_vm_timer, |
355 |
qemu_get_clock_ns(vm_clock) + get_ticks_per_sec() / 10);
|
356 |
} |
357 |
|
358 |
/***********************************************************/
|
359 |
void hw_error(const char *fmt, ...) |
360 |
{ |
361 |
va_list ap; |
362 |
CPUArchState *env; |
363 |
|
364 |
va_start(ap, fmt); |
365 |
fprintf(stderr, "qemu: hardware error: ");
|
366 |
vfprintf(stderr, fmt, ap); |
367 |
fprintf(stderr, "\n");
|
368 |
for(env = first_cpu; env != NULL; env = env->next_cpu) { |
369 |
fprintf(stderr, "CPU #%d:\n", env->cpu_index);
|
370 |
#ifdef TARGET_I386
|
371 |
cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU); |
372 |
#else
|
373 |
cpu_dump_state(env, stderr, fprintf, 0);
|
374 |
#endif
|
375 |
} |
376 |
va_end(ap); |
377 |
abort(); |
378 |
} |
379 |
|
380 |
void cpu_synchronize_all_states(void) |
381 |
{ |
382 |
CPUArchState *cpu; |
383 |
|
384 |
for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
|
385 |
cpu_synchronize_state(cpu); |
386 |
} |
387 |
} |
388 |
|
389 |
void cpu_synchronize_all_post_reset(void) |
390 |
{ |
391 |
CPUArchState *cpu; |
392 |
|
393 |
for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
|
394 |
cpu_synchronize_post_reset(cpu); |
395 |
} |
396 |
} |
397 |
|
398 |
void cpu_synchronize_all_post_init(void) |
399 |
{ |
400 |
CPUArchState *cpu; |
401 |
|
402 |
for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
|
403 |
cpu_synchronize_post_init(cpu); |
404 |
} |
405 |
} |
406 |
|
407 |
int cpu_is_stopped(CPUArchState *env)
|
408 |
{ |
409 |
return !runstate_is_running() || env->stopped;
|
410 |
} |
411 |
|
412 |
static void do_vm_stop(RunState state) |
413 |
{ |
414 |
if (runstate_is_running()) {
|
415 |
cpu_disable_ticks(); |
416 |
pause_all_vcpus(); |
417 |
runstate_set(state); |
418 |
vm_state_notify(0, state);
|
419 |
bdrv_drain_all(); |
420 |
bdrv_flush_all(); |
421 |
monitor_protocol_event(QEVENT_STOP, NULL);
|
422 |
} |
423 |
} |
424 |
|
425 |
static int cpu_can_run(CPUArchState *env) |
426 |
{ |
427 |
if (env->stop) {
|
428 |
return 0; |
429 |
} |
430 |
if (env->stopped || !runstate_is_running()) {
|
431 |
return 0; |
432 |
} |
433 |
return 1; |
434 |
} |
435 |
|
436 |
static bool cpu_thread_is_idle(CPUArchState *env) |
437 |
{ |
438 |
if (env->stop || env->queued_work_first) {
|
439 |
return false; |
440 |
} |
441 |
if (env->stopped || !runstate_is_running()) {
|
442 |
return true; |
443 |
} |
444 |
if (!env->halted || qemu_cpu_has_work(env) || kvm_irqchip_in_kernel()) {
|
445 |
return false; |
446 |
} |
447 |
return true; |
448 |
} |
449 |
|
450 |
bool all_cpu_threads_idle(void) |
451 |
{ |
452 |
CPUArchState *env; |
453 |
|
454 |
for (env = first_cpu; env != NULL; env = env->next_cpu) { |
455 |
if (!cpu_thread_is_idle(env)) {
|
456 |
return false; |
457 |
} |
458 |
} |
459 |
return true; |
460 |
} |
461 |
|
462 |
static void cpu_handle_guest_debug(CPUArchState *env) |
463 |
{ |
464 |
gdb_set_stop_cpu(env); |
465 |
qemu_system_debug_request(); |
466 |
env->stopped = 1;
|
467 |
} |
468 |
|
469 |
static void cpu_signal(int sig) |
470 |
{ |
471 |
if (cpu_single_env) {
|
472 |
cpu_exit(cpu_single_env); |
473 |
} |
474 |
exit_request = 1;
|
475 |
} |
476 |
|
477 |
#ifdef CONFIG_LINUX
|
478 |
static void sigbus_reraise(void) |
479 |
{ |
480 |
sigset_t set; |
481 |
struct sigaction action;
|
482 |
|
483 |
memset(&action, 0, sizeof(action)); |
484 |
action.sa_handler = SIG_DFL; |
485 |
if (!sigaction(SIGBUS, &action, NULL)) { |
486 |
raise(SIGBUS); |
487 |
sigemptyset(&set); |
488 |
sigaddset(&set, SIGBUS); |
489 |
sigprocmask(SIG_UNBLOCK, &set, NULL);
|
490 |
} |
491 |
perror("Failed to re-raise SIGBUS!\n");
|
492 |
abort(); |
493 |
} |
494 |
|
495 |
static void sigbus_handler(int n, struct qemu_signalfd_siginfo *siginfo, |
496 |
void *ctx)
|
497 |
{ |
498 |
if (kvm_on_sigbus(siginfo->ssi_code,
|
499 |
(void *)(intptr_t)siginfo->ssi_addr)) {
|
500 |
sigbus_reraise(); |
501 |
} |
502 |
} |
503 |
|
504 |
static void qemu_init_sigbus(void) |
505 |
{ |
506 |
struct sigaction action;
|
507 |
|
508 |
memset(&action, 0, sizeof(action)); |
509 |
action.sa_flags = SA_SIGINFO; |
510 |
action.sa_sigaction = (void (*)(int, siginfo_t*, void*))sigbus_handler; |
511 |
sigaction(SIGBUS, &action, NULL);
|
512 |
|
513 |
prctl(PR_MCE_KILL, PR_MCE_KILL_SET, PR_MCE_KILL_EARLY, 0, 0); |
514 |
} |
515 |
|
516 |
static void qemu_kvm_eat_signals(CPUArchState *env) |
517 |
{ |
518 |
struct timespec ts = { 0, 0 }; |
519 |
siginfo_t siginfo; |
520 |
sigset_t waitset; |
521 |
sigset_t chkset; |
522 |
int r;
|
523 |
|
524 |
sigemptyset(&waitset); |
525 |
sigaddset(&waitset, SIG_IPI); |
526 |
sigaddset(&waitset, SIGBUS); |
527 |
|
528 |
do {
|
529 |
r = sigtimedwait(&waitset, &siginfo, &ts); |
530 |
if (r == -1 && !(errno == EAGAIN || errno == EINTR)) { |
531 |
perror("sigtimedwait");
|
532 |
exit(1);
|
533 |
} |
534 |
|
535 |
switch (r) {
|
536 |
case SIGBUS:
|
537 |
if (kvm_on_sigbus_vcpu(env, siginfo.si_code, siginfo.si_addr)) {
|
538 |
sigbus_reraise(); |
539 |
} |
540 |
break;
|
541 |
default:
|
542 |
break;
|
543 |
} |
544 |
|
545 |
r = sigpending(&chkset); |
546 |
if (r == -1) { |
547 |
perror("sigpending");
|
548 |
exit(1);
|
549 |
} |
550 |
} while (sigismember(&chkset, SIG_IPI) || sigismember(&chkset, SIGBUS));
|
551 |
} |
552 |
|
553 |
#else /* !CONFIG_LINUX */ |
554 |
|
555 |
static void qemu_init_sigbus(void) |
556 |
{ |
557 |
} |
558 |
|
559 |
static void qemu_kvm_eat_signals(CPUArchState *env) |
560 |
{ |
561 |
} |
562 |
#endif /* !CONFIG_LINUX */ |
563 |
|
564 |
#ifndef _WIN32
|
565 |
static void dummy_signal(int sig) |
566 |
{ |
567 |
} |
568 |
|
569 |
static void qemu_kvm_init_cpu_signals(CPUArchState *env) |
570 |
{ |
571 |
int r;
|
572 |
sigset_t set; |
573 |
struct sigaction sigact;
|
574 |
|
575 |
memset(&sigact, 0, sizeof(sigact)); |
576 |
sigact.sa_handler = dummy_signal; |
577 |
sigaction(SIG_IPI, &sigact, NULL);
|
578 |
|
579 |
pthread_sigmask(SIG_BLOCK, NULL, &set);
|
580 |
sigdelset(&set, SIG_IPI); |
581 |
sigdelset(&set, SIGBUS); |
582 |
r = kvm_set_signal_mask(env, &set); |
583 |
if (r) {
|
584 |
fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r));
|
585 |
exit(1);
|
586 |
} |
587 |
} |
588 |
|
589 |
static void qemu_tcg_init_cpu_signals(void) |
590 |
{ |
591 |
sigset_t set; |
592 |
struct sigaction sigact;
|
593 |
|
594 |
memset(&sigact, 0, sizeof(sigact)); |
595 |
sigact.sa_handler = cpu_signal; |
596 |
sigaction(SIG_IPI, &sigact, NULL);
|
597 |
|
598 |
sigemptyset(&set); |
599 |
sigaddset(&set, SIG_IPI); |
600 |
pthread_sigmask(SIG_UNBLOCK, &set, NULL);
|
601 |
} |
602 |
|
603 |
#else /* _WIN32 */ |
604 |
static void qemu_kvm_init_cpu_signals(CPUArchState *env) |
605 |
{ |
606 |
abort(); |
607 |
} |
608 |
|
609 |
static void qemu_tcg_init_cpu_signals(void) |
610 |
{ |
611 |
} |
612 |
#endif /* _WIN32 */ |
613 |
|
614 |
QemuMutex qemu_global_mutex; |
615 |
static QemuCond qemu_io_proceeded_cond;
|
616 |
static bool iothread_requesting_mutex; |
617 |
|
618 |
static QemuThread io_thread;
|
619 |
|
620 |
static QemuThread *tcg_cpu_thread;
|
621 |
static QemuCond *tcg_halt_cond;
|
622 |
|
623 |
/* cpu creation */
|
624 |
static QemuCond qemu_cpu_cond;
|
625 |
/* system init */
|
626 |
static QemuCond qemu_pause_cond;
|
627 |
static QemuCond qemu_work_cond;
|
628 |
|
629 |
void qemu_init_cpu_loop(void) |
630 |
{ |
631 |
qemu_init_sigbus(); |
632 |
qemu_cond_init(&qemu_cpu_cond); |
633 |
qemu_cond_init(&qemu_pause_cond); |
634 |
qemu_cond_init(&qemu_work_cond); |
635 |
qemu_cond_init(&qemu_io_proceeded_cond); |
636 |
qemu_mutex_init(&qemu_global_mutex); |
637 |
|
638 |
qemu_thread_get_self(&io_thread); |
639 |
} |
640 |
|
641 |
void run_on_cpu(CPUArchState *env, void (*func)(void *data), void *data) |
642 |
{ |
643 |
struct qemu_work_item wi;
|
644 |
|
645 |
if (qemu_cpu_is_self(env)) {
|
646 |
func(data); |
647 |
return;
|
648 |
} |
649 |
|
650 |
wi.func = func; |
651 |
wi.data = data; |
652 |
if (!env->queued_work_first) {
|
653 |
env->queued_work_first = &wi; |
654 |
} else {
|
655 |
env->queued_work_last->next = &wi; |
656 |
} |
657 |
env->queued_work_last = &wi; |
658 |
wi.next = NULL;
|
659 |
wi.done = false;
|
660 |
|
661 |
qemu_cpu_kick(env); |
662 |
while (!wi.done) {
|
663 |
CPUArchState *self_env = cpu_single_env; |
664 |
|
665 |
qemu_cond_wait(&qemu_work_cond, &qemu_global_mutex); |
666 |
cpu_single_env = self_env; |
667 |
} |
668 |
} |
669 |
|
670 |
static void flush_queued_work(CPUArchState *env) |
671 |
{ |
672 |
struct qemu_work_item *wi;
|
673 |
|
674 |
if (!env->queued_work_first) {
|
675 |
return;
|
676 |
} |
677 |
|
678 |
while ((wi = env->queued_work_first)) {
|
679 |
env->queued_work_first = wi->next; |
680 |
wi->func(wi->data); |
681 |
wi->done = true;
|
682 |
} |
683 |
env->queued_work_last = NULL;
|
684 |
qemu_cond_broadcast(&qemu_work_cond); |
685 |
} |
686 |
|
687 |
static void qemu_wait_io_event_common(CPUArchState *env) |
688 |
{ |
689 |
if (env->stop) {
|
690 |
env->stop = 0;
|
691 |
env->stopped = 1;
|
692 |
qemu_cond_signal(&qemu_pause_cond); |
693 |
} |
694 |
flush_queued_work(env); |
695 |
env->thread_kicked = false;
|
696 |
} |
697 |
|
698 |
static void qemu_tcg_wait_io_event(void) |
699 |
{ |
700 |
CPUArchState *env; |
701 |
|
702 |
while (all_cpu_threads_idle()) {
|
703 |
/* Start accounting real time to the virtual clock if the CPUs
|
704 |
are idle. */
|
705 |
qemu_clock_warp(vm_clock); |
706 |
qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex); |
707 |
} |
708 |
|
709 |
while (iothread_requesting_mutex) {
|
710 |
qemu_cond_wait(&qemu_io_proceeded_cond, &qemu_global_mutex); |
711 |
} |
712 |
|
713 |
for (env = first_cpu; env != NULL; env = env->next_cpu) { |
714 |
qemu_wait_io_event_common(env); |
715 |
} |
716 |
} |
717 |
|
718 |
static void qemu_kvm_wait_io_event(CPUArchState *env) |
719 |
{ |
720 |
while (cpu_thread_is_idle(env)) {
|
721 |
qemu_cond_wait(env->halt_cond, &qemu_global_mutex); |
722 |
} |
723 |
|
724 |
qemu_kvm_eat_signals(env); |
725 |
qemu_wait_io_event_common(env); |
726 |
} |
727 |
|
728 |
static void *qemu_kvm_cpu_thread_fn(void *arg) |
729 |
{ |
730 |
CPUArchState *env = arg; |
731 |
int r;
|
732 |
|
733 |
qemu_mutex_lock(&qemu_global_mutex); |
734 |
qemu_thread_get_self(env->thread); |
735 |
env->thread_id = qemu_get_thread_id(); |
736 |
cpu_single_env = env; |
737 |
|
738 |
r = kvm_init_vcpu(env); |
739 |
if (r < 0) { |
740 |
fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r));
|
741 |
exit(1);
|
742 |
} |
743 |
|
744 |
qemu_kvm_init_cpu_signals(env); |
745 |
|
746 |
/* signal CPU creation */
|
747 |
env->created = 1;
|
748 |
qemu_cond_signal(&qemu_cpu_cond); |
749 |
|
750 |
while (1) { |
751 |
if (cpu_can_run(env)) {
|
752 |
r = kvm_cpu_exec(env); |
753 |
if (r == EXCP_DEBUG) {
|
754 |
cpu_handle_guest_debug(env); |
755 |
} |
756 |
} |
757 |
qemu_kvm_wait_io_event(env); |
758 |
} |
759 |
|
760 |
return NULL; |
761 |
} |
762 |
|
763 |
static void *qemu_dummy_cpu_thread_fn(void *arg) |
764 |
{ |
765 |
#ifdef _WIN32
|
766 |
fprintf(stderr, "qtest is not supported under Windows\n");
|
767 |
exit(1);
|
768 |
#else
|
769 |
CPUArchState *env = arg; |
770 |
sigset_t waitset; |
771 |
int r;
|
772 |
|
773 |
qemu_mutex_lock_iothread(); |
774 |
qemu_thread_get_self(env->thread); |
775 |
env->thread_id = qemu_get_thread_id(); |
776 |
|
777 |
sigemptyset(&waitset); |
778 |
sigaddset(&waitset, SIG_IPI); |
779 |
|
780 |
/* signal CPU creation */
|
781 |
env->created = 1;
|
782 |
qemu_cond_signal(&qemu_cpu_cond); |
783 |
|
784 |
cpu_single_env = env; |
785 |
while (1) { |
786 |
cpu_single_env = NULL;
|
787 |
qemu_mutex_unlock_iothread(); |
788 |
do {
|
789 |
int sig;
|
790 |
r = sigwait(&waitset, &sig); |
791 |
} while (r == -1 && (errno == EAGAIN || errno == EINTR)); |
792 |
if (r == -1) { |
793 |
perror("sigwait");
|
794 |
exit(1);
|
795 |
} |
796 |
qemu_mutex_lock_iothread(); |
797 |
cpu_single_env = env; |
798 |
qemu_wait_io_event_common(env); |
799 |
} |
800 |
|
801 |
return NULL; |
802 |
#endif
|
803 |
} |
804 |
|
805 |
static void tcg_exec_all(void); |
806 |
|
807 |
static void *qemu_tcg_cpu_thread_fn(void *arg) |
808 |
{ |
809 |
CPUArchState *env = arg; |
810 |
|
811 |
qemu_tcg_init_cpu_signals(); |
812 |
qemu_thread_get_self(env->thread); |
813 |
|
814 |
/* signal CPU creation */
|
815 |
qemu_mutex_lock(&qemu_global_mutex); |
816 |
for (env = first_cpu; env != NULL; env = env->next_cpu) { |
817 |
env->thread_id = qemu_get_thread_id(); |
818 |
env->created = 1;
|
819 |
} |
820 |
qemu_cond_signal(&qemu_cpu_cond); |
821 |
|
822 |
/* wait for initial kick-off after machine start */
|
823 |
while (first_cpu->stopped) {
|
824 |
qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex); |
825 |
|
826 |
/* process any pending work */
|
827 |
for (env = first_cpu; env != NULL; env = env->next_cpu) { |
828 |
qemu_wait_io_event_common(env); |
829 |
} |
830 |
} |
831 |
|
832 |
while (1) { |
833 |
tcg_exec_all(); |
834 |
if (use_icount && qemu_clock_deadline(vm_clock) <= 0) { |
835 |
qemu_notify_event(); |
836 |
} |
837 |
qemu_tcg_wait_io_event(); |
838 |
} |
839 |
|
840 |
return NULL; |
841 |
} |
842 |
|
843 |
static void qemu_cpu_kick_thread(CPUArchState *env) |
844 |
{ |
845 |
#ifndef _WIN32
|
846 |
int err;
|
847 |
|
848 |
err = pthread_kill(env->thread->thread, SIG_IPI); |
849 |
if (err) {
|
850 |
fprintf(stderr, "qemu:%s: %s", __func__, strerror(err));
|
851 |
exit(1);
|
852 |
} |
853 |
#else /* _WIN32 */ |
854 |
if (!qemu_cpu_is_self(env)) {
|
855 |
SuspendThread(env->hThread); |
856 |
cpu_signal(0);
|
857 |
ResumeThread(env->hThread); |
858 |
} |
859 |
#endif
|
860 |
} |
861 |
|
862 |
void qemu_cpu_kick(void *_env) |
863 |
{ |
864 |
CPUArchState *env = _env; |
865 |
|
866 |
qemu_cond_broadcast(env->halt_cond); |
867 |
if (!tcg_enabled() && !env->thread_kicked) {
|
868 |
qemu_cpu_kick_thread(env); |
869 |
env->thread_kicked = true;
|
870 |
} |
871 |
} |
872 |
|
873 |
void qemu_cpu_kick_self(void) |
874 |
{ |
875 |
#ifndef _WIN32
|
876 |
assert(cpu_single_env); |
877 |
|
878 |
if (!cpu_single_env->thread_kicked) {
|
879 |
qemu_cpu_kick_thread(cpu_single_env); |
880 |
cpu_single_env->thread_kicked = true;
|
881 |
} |
882 |
#else
|
883 |
abort(); |
884 |
#endif
|
885 |
} |
886 |
|
887 |
int qemu_cpu_is_self(void *_env) |
888 |
{ |
889 |
CPUArchState *env = _env; |
890 |
|
891 |
return qemu_thread_is_self(env->thread);
|
892 |
} |
893 |
|
894 |
void qemu_mutex_lock_iothread(void) |
895 |
{ |
896 |
if (!tcg_enabled()) {
|
897 |
qemu_mutex_lock(&qemu_global_mutex); |
898 |
} else {
|
899 |
iothread_requesting_mutex = true;
|
900 |
if (qemu_mutex_trylock(&qemu_global_mutex)) {
|
901 |
qemu_cpu_kick_thread(first_cpu); |
902 |
qemu_mutex_lock(&qemu_global_mutex); |
903 |
} |
904 |
iothread_requesting_mutex = false;
|
905 |
qemu_cond_broadcast(&qemu_io_proceeded_cond); |
906 |
} |
907 |
} |
908 |
|
909 |
void qemu_mutex_unlock_iothread(void) |
910 |
{ |
911 |
qemu_mutex_unlock(&qemu_global_mutex); |
912 |
} |
913 |
|
914 |
static int all_vcpus_paused(void) |
915 |
{ |
916 |
CPUArchState *penv = first_cpu; |
917 |
|
918 |
while (penv) {
|
919 |
if (!penv->stopped) {
|
920 |
return 0; |
921 |
} |
922 |
penv = penv->next_cpu; |
923 |
} |
924 |
|
925 |
return 1; |
926 |
} |
927 |
|
928 |
void pause_all_vcpus(void) |
929 |
{ |
930 |
CPUArchState *penv = first_cpu; |
931 |
|
932 |
qemu_clock_enable(vm_clock, false);
|
933 |
while (penv) {
|
934 |
penv->stop = 1;
|
935 |
qemu_cpu_kick(penv); |
936 |
penv = penv->next_cpu; |
937 |
} |
938 |
|
939 |
if (!qemu_thread_is_self(&io_thread)) {
|
940 |
cpu_stop_current(); |
941 |
if (!kvm_enabled()) {
|
942 |
while (penv) {
|
943 |
penv->stop = 0;
|
944 |
penv->stopped = 1;
|
945 |
penv = penv->next_cpu; |
946 |
} |
947 |
return;
|
948 |
} |
949 |
} |
950 |
|
951 |
while (!all_vcpus_paused()) {
|
952 |
qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex); |
953 |
penv = first_cpu; |
954 |
while (penv) {
|
955 |
qemu_cpu_kick(penv); |
956 |
penv = penv->next_cpu; |
957 |
} |
958 |
} |
959 |
} |
960 |
|
961 |
void resume_all_vcpus(void) |
962 |
{ |
963 |
CPUArchState *penv = first_cpu; |
964 |
|
965 |
qemu_clock_enable(vm_clock, true);
|
966 |
while (penv) {
|
967 |
penv->stop = 0;
|
968 |
penv->stopped = 0;
|
969 |
qemu_cpu_kick(penv); |
970 |
penv = penv->next_cpu; |
971 |
} |
972 |
} |
973 |
|
974 |
static void qemu_tcg_init_vcpu(void *_env) |
975 |
{ |
976 |
CPUArchState *env = _env; |
977 |
|
978 |
/* share a single thread for all cpus with TCG */
|
979 |
if (!tcg_cpu_thread) {
|
980 |
env->thread = g_malloc0(sizeof(QemuThread));
|
981 |
env->halt_cond = g_malloc0(sizeof(QemuCond));
|
982 |
qemu_cond_init(env->halt_cond); |
983 |
tcg_halt_cond = env->halt_cond; |
984 |
qemu_thread_create(env->thread, qemu_tcg_cpu_thread_fn, env, |
985 |
QEMU_THREAD_JOINABLE); |
986 |
#ifdef _WIN32
|
987 |
env->hThread = qemu_thread_get_handle(env->thread); |
988 |
#endif
|
989 |
while (env->created == 0) { |
990 |
qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
991 |
} |
992 |
tcg_cpu_thread = env->thread; |
993 |
} else {
|
994 |
env->thread = tcg_cpu_thread; |
995 |
env->halt_cond = tcg_halt_cond; |
996 |
} |
997 |
} |
998 |
|
999 |
static void qemu_kvm_start_vcpu(CPUArchState *env) |
1000 |
{ |
1001 |
env->thread = g_malloc0(sizeof(QemuThread));
|
1002 |
env->halt_cond = g_malloc0(sizeof(QemuCond));
|
1003 |
qemu_cond_init(env->halt_cond); |
1004 |
qemu_thread_create(env->thread, qemu_kvm_cpu_thread_fn, env, |
1005 |
QEMU_THREAD_JOINABLE); |
1006 |
while (env->created == 0) { |
1007 |
qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
1008 |
} |
1009 |
} |
1010 |
|
1011 |
static void qemu_dummy_start_vcpu(CPUArchState *env) |
1012 |
{ |
1013 |
env->thread = g_malloc0(sizeof(QemuThread));
|
1014 |
env->halt_cond = g_malloc0(sizeof(QemuCond));
|
1015 |
qemu_cond_init(env->halt_cond); |
1016 |
qemu_thread_create(env->thread, qemu_dummy_cpu_thread_fn, env, |
1017 |
QEMU_THREAD_JOINABLE); |
1018 |
while (env->created == 0) { |
1019 |
qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
1020 |
} |
1021 |
} |
1022 |
|
1023 |
void qemu_init_vcpu(void *_env) |
1024 |
{ |
1025 |
CPUArchState *env = _env; |
1026 |
|
1027 |
env->nr_cores = smp_cores; |
1028 |
env->nr_threads = smp_threads; |
1029 |
env->stopped = 1;
|
1030 |
if (kvm_enabled()) {
|
1031 |
qemu_kvm_start_vcpu(env); |
1032 |
} else if (tcg_enabled()) { |
1033 |
qemu_tcg_init_vcpu(env); |
1034 |
} else {
|
1035 |
qemu_dummy_start_vcpu(env); |
1036 |
} |
1037 |
} |
1038 |
|
1039 |
void cpu_stop_current(void) |
1040 |
{ |
1041 |
if (cpu_single_env) {
|
1042 |
cpu_single_env->stop = 0;
|
1043 |
cpu_single_env->stopped = 1;
|
1044 |
cpu_exit(cpu_single_env); |
1045 |
qemu_cond_signal(&qemu_pause_cond); |
1046 |
} |
1047 |
} |
1048 |
|
1049 |
void vm_stop(RunState state)
|
1050 |
{ |
1051 |
if (!qemu_thread_is_self(&io_thread)) {
|
1052 |
qemu_system_vmstop_request(state); |
1053 |
/*
|
1054 |
* FIXME: should not return to device code in case
|
1055 |
* vm_stop() has been requested.
|
1056 |
*/
|
1057 |
cpu_stop_current(); |
1058 |
return;
|
1059 |
} |
1060 |
do_vm_stop(state); |
1061 |
} |
1062 |
|
1063 |
/* does a state transition even if the VM is already stopped,
|
1064 |
current state is forgotten forever */
|
1065 |
void vm_stop_force_state(RunState state)
|
1066 |
{ |
1067 |
if (runstate_is_running()) {
|
1068 |
vm_stop(state); |
1069 |
} else {
|
1070 |
runstate_set(state); |
1071 |
} |
1072 |
} |
1073 |
|
1074 |
static int tcg_cpu_exec(CPUArchState *env) |
1075 |
{ |
1076 |
int ret;
|
1077 |
#ifdef CONFIG_PROFILER
|
1078 |
int64_t ti; |
1079 |
#endif
|
1080 |
|
1081 |
#ifdef CONFIG_PROFILER
|
1082 |
ti = profile_getclock(); |
1083 |
#endif
|
1084 |
if (use_icount) {
|
1085 |
int64_t count; |
1086 |
int decr;
|
1087 |
qemu_icount -= (env->icount_decr.u16.low + env->icount_extra); |
1088 |
env->icount_decr.u16.low = 0;
|
1089 |
env->icount_extra = 0;
|
1090 |
count = qemu_icount_round(qemu_clock_deadline(vm_clock)); |
1091 |
qemu_icount += count; |
1092 |
decr = (count > 0xffff) ? 0xffff : count; |
1093 |
count -= decr; |
1094 |
env->icount_decr.u16.low = decr; |
1095 |
env->icount_extra = count; |
1096 |
} |
1097 |
ret = cpu_exec(env); |
1098 |
#ifdef CONFIG_PROFILER
|
1099 |
qemu_time += profile_getclock() - ti; |
1100 |
#endif
|
1101 |
if (use_icount) {
|
1102 |
/* Fold pending instructions back into the
|
1103 |
instruction counter, and clear the interrupt flag. */
|
1104 |
qemu_icount -= (env->icount_decr.u16.low |
1105 |
+ env->icount_extra); |
1106 |
env->icount_decr.u32 = 0;
|
1107 |
env->icount_extra = 0;
|
1108 |
} |
1109 |
return ret;
|
1110 |
} |
1111 |
|
1112 |
static void tcg_exec_all(void) |
1113 |
{ |
1114 |
int r;
|
1115 |
|
1116 |
/* Account partial waits to the vm_clock. */
|
1117 |
qemu_clock_warp(vm_clock); |
1118 |
|
1119 |
if (next_cpu == NULL) { |
1120 |
next_cpu = first_cpu; |
1121 |
} |
1122 |
for (; next_cpu != NULL && !exit_request; next_cpu = next_cpu->next_cpu) { |
1123 |
CPUArchState *env = next_cpu; |
1124 |
|
1125 |
qemu_clock_enable(vm_clock, |
1126 |
(env->singlestep_enabled & SSTEP_NOTIMER) == 0);
|
1127 |
|
1128 |
if (cpu_can_run(env)) {
|
1129 |
r = tcg_cpu_exec(env); |
1130 |
if (r == EXCP_DEBUG) {
|
1131 |
cpu_handle_guest_debug(env); |
1132 |
break;
|
1133 |
} |
1134 |
} else if (env->stop || env->stopped) { |
1135 |
break;
|
1136 |
} |
1137 |
} |
1138 |
exit_request = 0;
|
1139 |
} |
1140 |
|
1141 |
void set_numa_modes(void) |
1142 |
{ |
1143 |
CPUArchState *env; |
1144 |
int i;
|
1145 |
|
1146 |
for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1147 |
for (i = 0; i < nb_numa_nodes; i++) { |
1148 |
if (node_cpumask[i] & (1 << env->cpu_index)) { |
1149 |
env->numa_node = i; |
1150 |
} |
1151 |
} |
1152 |
} |
1153 |
} |
1154 |
|
1155 |
void set_cpu_log(const char *optarg) |
1156 |
{ |
1157 |
int mask;
|
1158 |
const CPULogItem *item;
|
1159 |
|
1160 |
mask = cpu_str_to_log_mask(optarg); |
1161 |
if (!mask) {
|
1162 |
printf("Log items (comma separated):\n");
|
1163 |
for (item = cpu_log_items; item->mask != 0; item++) { |
1164 |
printf("%-10s %s\n", item->name, item->help);
|
1165 |
} |
1166 |
exit(1);
|
1167 |
} |
1168 |
cpu_set_log(mask); |
1169 |
} |
1170 |
|
1171 |
void set_cpu_log_filename(const char *optarg) |
1172 |
{ |
1173 |
cpu_set_log_filename(optarg); |
1174 |
} |
1175 |
|
1176 |
void list_cpus(FILE *f, fprintf_function cpu_fprintf, const char *optarg) |
1177 |
{ |
1178 |
/* XXX: implement xxx_cpu_list for targets that still miss it */
|
1179 |
#if defined(cpu_list_id)
|
1180 |
cpu_list_id(f, cpu_fprintf, optarg); |
1181 |
#elif defined(cpu_list)
|
1182 |
cpu_list(f, cpu_fprintf); /* deprecated */
|
1183 |
#endif
|
1184 |
} |
1185 |
|
1186 |
CpuInfoList *qmp_query_cpus(Error **errp) |
1187 |
{ |
1188 |
CpuInfoList *head = NULL, *cur_item = NULL; |
1189 |
CPUArchState *env; |
1190 |
|
1191 |
for(env = first_cpu; env != NULL; env = env->next_cpu) { |
1192 |
CpuInfoList *info; |
1193 |
|
1194 |
cpu_synchronize_state(env); |
1195 |
|
1196 |
info = g_malloc0(sizeof(*info));
|
1197 |
info->value = g_malloc0(sizeof(*info->value));
|
1198 |
info->value->CPU = env->cpu_index; |
1199 |
info->value->current = (env == first_cpu); |
1200 |
info->value->halted = env->halted; |
1201 |
info->value->thread_id = env->thread_id; |
1202 |
#if defined(TARGET_I386)
|
1203 |
info->value->has_pc = true;
|
1204 |
info->value->pc = env->eip + env->segs[R_CS].base; |
1205 |
#elif defined(TARGET_PPC)
|
1206 |
info->value->has_nip = true;
|
1207 |
info->value->nip = env->nip; |
1208 |
#elif defined(TARGET_SPARC)
|
1209 |
info->value->has_pc = true;
|
1210 |
info->value->pc = env->pc; |
1211 |
info->value->has_npc = true;
|
1212 |
info->value->npc = env->npc; |
1213 |
#elif defined(TARGET_MIPS)
|
1214 |
info->value->has_PC = true;
|
1215 |
info->value->PC = env->active_tc.PC; |
1216 |
#endif
|
1217 |
|
1218 |
/* XXX: waiting for the qapi to support GSList */
|
1219 |
if (!cur_item) {
|
1220 |
head = cur_item = info; |
1221 |
} else {
|
1222 |
cur_item->next = info; |
1223 |
cur_item = info; |
1224 |
} |
1225 |
} |
1226 |
|
1227 |
return head;
|
1228 |
} |
1229 |
|
1230 |
void qmp_memsave(int64_t addr, int64_t size, const char *filename, |
1231 |
bool has_cpu, int64_t cpu_index, Error **errp)
|
1232 |
{ |
1233 |
FILE *f; |
1234 |
uint32_t l; |
1235 |
CPUArchState *env; |
1236 |
uint8_t buf[1024];
|
1237 |
|
1238 |
if (!has_cpu) {
|
1239 |
cpu_index = 0;
|
1240 |
} |
1241 |
|
1242 |
for (env = first_cpu; env; env = env->next_cpu) {
|
1243 |
if (cpu_index == env->cpu_index) {
|
1244 |
break;
|
1245 |
} |
1246 |
} |
1247 |
|
1248 |
if (env == NULL) { |
1249 |
error_set(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index",
|
1250 |
"a CPU number");
|
1251 |
return;
|
1252 |
} |
1253 |
|
1254 |
f = fopen(filename, "wb");
|
1255 |
if (!f) {
|
1256 |
error_set(errp, QERR_OPEN_FILE_FAILED, filename); |
1257 |
return;
|
1258 |
} |
1259 |
|
1260 |
while (size != 0) { |
1261 |
l = sizeof(buf);
|
1262 |
if (l > size)
|
1263 |
l = size; |
1264 |
cpu_memory_rw_debug(env, addr, buf, l, 0);
|
1265 |
if (fwrite(buf, 1, l, f) != l) { |
1266 |
error_set(errp, QERR_IO_ERROR); |
1267 |
goto exit;
|
1268 |
} |
1269 |
addr += l; |
1270 |
size -= l; |
1271 |
} |
1272 |
|
1273 |
exit:
|
1274 |
fclose(f); |
1275 |
} |
1276 |
|
1277 |
void qmp_pmemsave(int64_t addr, int64_t size, const char *filename, |
1278 |
Error **errp) |
1279 |
{ |
1280 |
FILE *f; |
1281 |
uint32_t l; |
1282 |
uint8_t buf[1024];
|
1283 |
|
1284 |
f = fopen(filename, "wb");
|
1285 |
if (!f) {
|
1286 |
error_set(errp, QERR_OPEN_FILE_FAILED, filename); |
1287 |
return;
|
1288 |
} |
1289 |
|
1290 |
while (size != 0) { |
1291 |
l = sizeof(buf);
|
1292 |
if (l > size)
|
1293 |
l = size; |
1294 |
cpu_physical_memory_rw(addr, buf, l, 0);
|
1295 |
if (fwrite(buf, 1, l, f) != l) { |
1296 |
error_set(errp, QERR_IO_ERROR); |
1297 |
goto exit;
|
1298 |
} |
1299 |
addr += l; |
1300 |
size -= l; |
1301 |
} |
1302 |
|
1303 |
exit:
|
1304 |
fclose(f); |
1305 |
} |
1306 |
|
1307 |
void qmp_inject_nmi(Error **errp)
|
1308 |
{ |
1309 |
#if defined(TARGET_I386)
|
1310 |
CPUArchState *env; |
1311 |
|
1312 |
for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1313 |
if (!env->apic_state) {
|
1314 |
cpu_interrupt(env, CPU_INTERRUPT_NMI); |
1315 |
} else {
|
1316 |
apic_deliver_nmi(env->apic_state); |
1317 |
} |
1318 |
} |
1319 |
#else
|
1320 |
error_set(errp, QERR_UNSUPPORTED); |
1321 |
#endif
|
1322 |
} |