?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
tracetool: Rewrite infrastructure as python modules
[qemu/qmp-unstable.git] / linux-user / main.c
blob191b75060d72e4d08ba88e5528f477a775c30e04
1 /*
2 * qemu user main
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 */
19 #include <stdlib.h>
20 #include <stdio.h>
21 #include <stdarg.h>
22 #include <string.h>
23 #include <errno.h>
24 #include <unistd.h>
25 #include <sys/mman.h>
26 #include <sys/syscall.h>
27 #include <sys/resource.h>
28
29 #include "qemu.h"
30 #include "qemu-common.h"
31 #include "cache-utils.h"
32 #include "cpu.h"
33 #include "tcg.h"
34 #include "qemu-timer.h"
35 #include "envlist.h"
36 #include "elf.h"
37
38 #define DEBUG_LOGFILE "/tmp/qemu.log"
39
40 char *exec_path;
41
42 int singlestep;
43 const char *filename;
44 const char *argv0;
45 int gdbstub_port;
46 envlist_t *envlist;
47 const char *cpu_model;
48 unsigned long mmap_min_addr;
49 #if defined(CONFIG_USE_GUEST_BASE)
50 unsigned long guest_base;
51 int have_guest_base;
52 #if (TARGET_LONG_BITS == 32) && (HOST_LONG_BITS == 64)
53 /*
54 * When running 32-on-64 we should make sure we can fit all of the possible
55 * guest address space into a contiguous chunk of virtual host memory.
56 *
57 * This way we will never overlap with our own libraries or binaries or stack
58 * or anything else that QEMU maps.
59 */
60 unsigned long reserved_va = 0xf7000000;
61 #else
62 unsigned long reserved_va;
63 #endif
64 #endif
65
66 static void usage(void);
67
68 static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
69 const char *qemu_uname_release = CONFIG_UNAME_RELEASE;
70
71 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
72 we allocate a bigger stack. Need a better solution, for example
73 by remapping the process stack directly at the right place */
74 unsigned long guest_stack_size = 8 * 1024 * 1024UL;
75
76 void gemu_log(const char *fmt, ...)
77 {
78 va_list ap;
79
80 va_start(ap, fmt);
81 vfprintf(stderr, fmt, ap);
82 va_end(ap);
83 }
84
85 #if defined(TARGET_I386)
86 int cpu_get_pic_interrupt(CPUX86State *env)
87 {
88 return -1;
89 }
90 #endif
91
92 /* timers for rdtsc */
93
94 #if 0
95
96 static uint64_t emu_time;
97
98 int64_t cpu_get_real_ticks(void)
99 {
100 return emu_time++;
101 }
102
103 #endif
104
105 #if defined(CONFIG_USE_NPTL)
106 /***********************************************************/
107 /* Helper routines for implementing atomic operations. */
108
109 /* To implement exclusive operations we force all cpus to syncronise.
110 We don't require a full sync, only that no cpus are executing guest code.
111 The alternative is to map target atomic ops onto host equivalents,
112 which requires quite a lot of per host/target work. */
113 static pthread_mutex_t cpu_list_mutex = PTHREAD_MUTEX_INITIALIZER;
114 static pthread_mutex_t exclusive_lock = PTHREAD_MUTEX_INITIALIZER;
115 static pthread_cond_t exclusive_cond = PTHREAD_COND_INITIALIZER;
116 static pthread_cond_t exclusive_resume = PTHREAD_COND_INITIALIZER;
117 static int pending_cpus;
118
119 /* Make sure everything is in a consistent state for calling fork(). */
120 void fork_start(void)
121 {
122 pthread_mutex_lock(&tb_lock);
123 pthread_mutex_lock(&exclusive_lock);
124 mmap_fork_start();
125 }
126
127 void fork_end(int child)
128 {
129 mmap_fork_end(child);
130 if (child) {
131 /* Child processes created by fork() only have a single thread.
132 Discard information about the parent threads. */
133 first_cpu = thread_env;
134 thread_env->next_cpu = NULL;
135 pending_cpus = 0;
136 pthread_mutex_init(&exclusive_lock, NULL);
137 pthread_mutex_init(&cpu_list_mutex, NULL);
138 pthread_cond_init(&exclusive_cond, NULL);
139 pthread_cond_init(&exclusive_resume, NULL);
140 pthread_mutex_init(&tb_lock, NULL);
141 gdbserver_fork(thread_env);
142 } else {
143 pthread_mutex_unlock(&exclusive_lock);
144 pthread_mutex_unlock(&tb_lock);
145 }
146 }
147
148 /* Wait for pending exclusive operations to complete. The exclusive lock
149 must be held. */
150 static inline void exclusive_idle(void)
151 {
152 while (pending_cpus) {
153 pthread_cond_wait(&exclusive_resume, &exclusive_lock);
154 }
155 }
156
157 /* Start an exclusive operation.
158 Must only be called from outside cpu_arm_exec. */
159 static inline void start_exclusive(void)
160 {
161 CPUArchState *other;
162 pthread_mutex_lock(&exclusive_lock);
163 exclusive_idle();
164
165 pending_cpus = 1;
166 /* Make all other cpus stop executing. */
167 for (other = first_cpu; other; other = other->next_cpu) {
168 if (other->running) {
169 pending_cpus++;
170 cpu_exit(other);
171 }
172 }
173 if (pending_cpus > 1) {
174 pthread_cond_wait(&exclusive_cond, &exclusive_lock);
175 }
176 }
177
178 /* Finish an exclusive operation. */
179 static inline void end_exclusive(void)
180 {
181 pending_cpus = 0;
182 pthread_cond_broadcast(&exclusive_resume);
183 pthread_mutex_unlock(&exclusive_lock);
184 }
185
186 /* Wait for exclusive ops to finish, and begin cpu execution. */
187 static inline void cpu_exec_start(CPUArchState *env)
188 {
189 pthread_mutex_lock(&exclusive_lock);
190 exclusive_idle();
191 env->running = 1;
192 pthread_mutex_unlock(&exclusive_lock);
193 }
194
195 /* Mark cpu as not executing, and release pending exclusive ops. */
196 static inline void cpu_exec_end(CPUArchState *env)
197 {
198 pthread_mutex_lock(&exclusive_lock);
199 env->running = 0;
200 if (pending_cpus > 1) {
201 pending_cpus--;
202 if (pending_cpus == 1) {
203 pthread_cond_signal(&exclusive_cond);
204 }
205 }
206 exclusive_idle();
207 pthread_mutex_unlock(&exclusive_lock);
208 }
209
210 void cpu_list_lock(void)
211 {
212 pthread_mutex_lock(&cpu_list_mutex);
213 }
214
215 void cpu_list_unlock(void)
216 {
217 pthread_mutex_unlock(&cpu_list_mutex);
218 }
219 #else /* if !CONFIG_USE_NPTL */
220 /* These are no-ops because we are not threadsafe. */
221 static inline void cpu_exec_start(CPUArchState *env)
222 {
223 }
224
225 static inline void cpu_exec_end(CPUArchState *env)
226 {
227 }
228
229 static inline void start_exclusive(void)
230 {
231 }
232
233 static inline void end_exclusive(void)
234 {
235 }
236
237 void fork_start(void)
238 {
239 }
240
241 void fork_end(int child)
242 {
243 if (child) {
244 gdbserver_fork(thread_env);
245 }
246 }
247
248 void cpu_list_lock(void)
249 {
250 }
251
252 void cpu_list_unlock(void)
253 {
254 }
255 #endif
256
257
258 #ifdef TARGET_I386
259 /***********************************************************/
260 /* CPUX86 core interface */
261
262 void cpu_smm_update(CPUX86State *env)
263 {
264 }
265
266 uint64_t cpu_get_tsc(CPUX86State *env)
267 {
268 return cpu_get_real_ticks();
269 }
270
271 static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
272 int flags)
273 {
274 unsigned int e1, e2;
275 uint32_t *p;
276 e1 = (addr << 16) | (limit & 0xffff);
277 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
278 e2 |= flags;
279 p = ptr;
280 p[0] = tswap32(e1);
281 p[1] = tswap32(e2);
282 }
283
284 static uint64_t *idt_table;
285 #ifdef TARGET_X86_64
286 static void set_gate64(void *ptr, unsigned int type, unsigned int dpl,
287 uint64_t addr, unsigned int sel)
288 {
289 uint32_t *p, e1, e2;
290 e1 = (addr & 0xffff) | (sel << 16);
291 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
292 p = ptr;
293 p[0] = tswap32(e1);
294 p[1] = tswap32(e2);
295 p[2] = tswap32(addr >> 32);
296 p[3] = 0;
297 }
298 /* only dpl matters as we do only user space emulation */
299 static void set_idt(int n, unsigned int dpl)
300 {
301 set_gate64(idt_table + n * 2, 0, dpl, 0, 0);
302 }
303 #else
304 static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
305 uint32_t addr, unsigned int sel)
306 {
307 uint32_t *p, e1, e2;
308 e1 = (addr & 0xffff) | (sel << 16);
309 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
310 p = ptr;
311 p[0] = tswap32(e1);
312 p[1] = tswap32(e2);
313 }
314
315 /* only dpl matters as we do only user space emulation */
316 static void set_idt(int n, unsigned int dpl)
317 {
318 set_gate(idt_table + n, 0, dpl, 0, 0);
319 }
320 #endif
321
322 void cpu_loop(CPUX86State *env)
323 {
324 int trapnr;
325 abi_ulong pc;
326 target_siginfo_t info;
327
328 for(;;) {
329 trapnr = cpu_x86_exec(env);
330 switch(trapnr) {
331 case 0x80:
332 /* linux syscall from int $0x80 */
333 env->regs[R_EAX] = do_syscall(env,
334 env->regs[R_EAX],
335 env->regs[R_EBX],
336 env->regs[R_ECX],
337 env->regs[R_EDX],
338 env->regs[R_ESI],
339 env->regs[R_EDI],
340 env->regs[R_EBP],
341 0, 0);
342 break;
343 #ifndef TARGET_ABI32
344 case EXCP_SYSCALL:
345 /* linux syscall from syscall instruction */
346 env->regs[R_EAX] = do_syscall(env,
347 env->regs[R_EAX],
348 env->regs[R_EDI],
349 env->regs[R_ESI],
350 env->regs[R_EDX],
351 env->regs[10],
352 env->regs[8],
353 env->regs[9],
354 0, 0);
355 env->eip = env->exception_next_eip;
356 break;
357 #endif
358 case EXCP0B_NOSEG:
359 case EXCP0C_STACK:
360 info.si_signo = SIGBUS;
361 info.si_errno = 0;
362 info.si_code = TARGET_SI_KERNEL;
363 info._sifields._sigfault._addr = 0;
364 queue_signal(env, info.si_signo, &info);
365 break;
366 case EXCP0D_GPF:
367 /* XXX: potential problem if ABI32 */
368 #ifndef TARGET_X86_64
369 if (env->eflags & VM_MASK) {
370 handle_vm86_fault(env);
371 } else
372 #endif
373 {
374 info.si_signo = SIGSEGV;
375 info.si_errno = 0;
376 info.si_code = TARGET_SI_KERNEL;
377 info._sifields._sigfault._addr = 0;
378 queue_signal(env, info.si_signo, &info);
379 }
380 break;
381 case EXCP0E_PAGE:
382 info.si_signo = SIGSEGV;
383 info.si_errno = 0;
384 if (!(env->error_code & 1))
385 info.si_code = TARGET_SEGV_MAPERR;
386 else
387 info.si_code = TARGET_SEGV_ACCERR;
388 info._sifields._sigfault._addr = env->cr[2];
389 queue_signal(env, info.si_signo, &info);
390 break;
391 case EXCP00_DIVZ:
392 #ifndef TARGET_X86_64
393 if (env->eflags & VM_MASK) {
394 handle_vm86_trap(env, trapnr);
395 } else
396 #endif
397 {
398 /* division by zero */
399 info.si_signo = SIGFPE;
400 info.si_errno = 0;
401 info.si_code = TARGET_FPE_INTDIV;
402 info._sifields._sigfault._addr = env->eip;
403 queue_signal(env, info.si_signo, &info);
404 }
405 break;
406 case EXCP01_DB:
407 case EXCP03_INT3:
408 #ifndef TARGET_X86_64
409 if (env->eflags & VM_MASK) {
410 handle_vm86_trap(env, trapnr);
411 } else
412 #endif
413 {
414 info.si_signo = SIGTRAP;
415 info.si_errno = 0;
416 if (trapnr == EXCP01_DB) {
417 info.si_code = TARGET_TRAP_BRKPT;
418 info._sifields._sigfault._addr = env->eip;
419 } else {
420 info.si_code = TARGET_SI_KERNEL;
421 info._sifields._sigfault._addr = 0;
422 }
423 queue_signal(env, info.si_signo, &info);
424 }
425 break;
426 case EXCP04_INTO:
427 case EXCP05_BOUND:
428 #ifndef TARGET_X86_64
429 if (env->eflags & VM_MASK) {
430 handle_vm86_trap(env, trapnr);
431 } else
432 #endif
433 {
434 info.si_signo = SIGSEGV;
435 info.si_errno = 0;
436 info.si_code = TARGET_SI_KERNEL;
437 info._sifields._sigfault._addr = 0;
438 queue_signal(env, info.si_signo, &info);
439 }
440 break;
441 case EXCP06_ILLOP:
442 info.si_signo = SIGILL;
443 info.si_errno = 0;
444 info.si_code = TARGET_ILL_ILLOPN;
445 info._sifields._sigfault._addr = env->eip;
446 queue_signal(env, info.si_signo, &info);
447 break;
448 case EXCP_INTERRUPT:
449 /* just indicate that signals should be handled asap */
450 break;
451 case EXCP_DEBUG:
452 {
453 int sig;
454
455 sig = gdb_handlesig (env, TARGET_SIGTRAP);
456 if (sig)
457 {
458 info.si_signo = sig;
459 info.si_errno = 0;
460 info.si_code = TARGET_TRAP_BRKPT;
461 queue_signal(env, info.si_signo, &info);
462 }
463 }
464 break;
465 default:
466 pc = env->segs[R_CS].base + env->eip;
467 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
468 (long)pc, trapnr);
469 abort();
470 }
471 process_pending_signals(env);
472 }
473 }
474 #endif
475
476 #ifdef TARGET_ARM
477
478 #define get_user_code_u32(x, gaddr, doswap) \
479 ({ abi_long __r = get_user_u32((x), (gaddr)); \
480 if (!__r && (doswap)) { \
481 (x) = bswap32(x); \
482 } \
483 __r; \
484 })
485
486 #define get_user_code_u16(x, gaddr, doswap) \
487 ({ abi_long __r = get_user_u16((x), (gaddr)); \
488 if (!__r && (doswap)) { \
489 (x) = bswap16(x); \
490 } \
491 __r; \
492 })
493
494 /*
495 * See the Linux kernel's Documentation/arm/kernel_user_helpers.txt
496 * Input:
497 * r0 = pointer to oldval
498 * r1 = pointer to newval
499 * r2 = pointer to target value
500 *
501 * Output:
502 * r0 = 0 if *ptr was changed, non-0 if no exchange happened
503 * C set if *ptr was changed, clear if no exchange happened
504 *
505 * Note segv's in kernel helpers are a bit tricky, we can set the
506 * data address sensibly but the PC address is just the entry point.
507 */
508 static void arm_kernel_cmpxchg64_helper(CPUARMState *env)
509 {
510 uint64_t oldval, newval, val;
511 uint32_t addr, cpsr;
512 target_siginfo_t info;
513
514 /* Based on the 32 bit code in do_kernel_trap */
515
516 /* XXX: This only works between threads, not between processes.
517 It's probably possible to implement this with native host
518 operations. However things like ldrex/strex are much harder so
519 there's not much point trying. */
520 start_exclusive();
521 cpsr = cpsr_read(env);
522 addr = env->regs[2];
523
524 if (get_user_u64(oldval, env->regs[0])) {
525 env->cp15.c6_data = env->regs[0];
526 goto segv;
527 };
528
529 if (get_user_u64(newval, env->regs[1])) {
530 env->cp15.c6_data = env->regs[1];
531 goto segv;
532 };
533
534 if (get_user_u64(val, addr)) {
535 env->cp15.c6_data = addr;
536 goto segv;
537 }
538
539 if (val == oldval) {
540 val = newval;
541
542 if (put_user_u64(val, addr)) {
543 env->cp15.c6_data = addr;
544 goto segv;
545 };
546
547 env->regs[0] = 0;
548 cpsr |= CPSR_C;
549 } else {
550 env->regs[0] = -1;
551 cpsr &= ~CPSR_C;
552 }
553 cpsr_write(env, cpsr, CPSR_C);
554 end_exclusive();
555 return;
556
557 segv:
558 end_exclusive();
559 /* We get the PC of the entry address - which is as good as anything,
560 on a real kernel what you get depends on which mode it uses. */
561 info.si_signo = SIGSEGV;
562 info.si_errno = 0;
563 /* XXX: check env->error_code */
564 info.si_code = TARGET_SEGV_MAPERR;
565 info._sifields._sigfault._addr = env->cp15.c6_data;
566 queue_signal(env, info.si_signo, &info);
567
568 end_exclusive();
569 }
570
571 /* Handle a jump to the kernel code page. */
572 static int
573 do_kernel_trap(CPUARMState *env)
574 {
575 uint32_t addr;
576 uint32_t cpsr;
577 uint32_t val;
578
579 switch (env->regs[15]) {
580 case 0xffff0fa0: /* __kernel_memory_barrier */
581 /* ??? No-op. Will need to do better for SMP. */
582 break;
583 case 0xffff0fc0: /* __kernel_cmpxchg */
584 /* XXX: This only works between threads, not between processes.
585 It's probably possible to implement this with native host
586 operations. However things like ldrex/strex are much harder so
587 there's not much point trying. */
588 start_exclusive();
589 cpsr = cpsr_read(env);
590 addr = env->regs[2];
591 /* FIXME: This should SEGV if the access fails. */
592 if (get_user_u32(val, addr))
593 val = ~env->regs[0];
594 if (val == env->regs[0]) {
595 val = env->regs[1];
596 /* FIXME: Check for segfaults. */
597 put_user_u32(val, addr);
598 env->regs[0] = 0;
599 cpsr |= CPSR_C;
600 } else {
601 env->regs[0] = -1;
602 cpsr &= ~CPSR_C;
603 }
604 cpsr_write(env, cpsr, CPSR_C);
605 end_exclusive();
606 break;
607 case 0xffff0fe0: /* __kernel_get_tls */
608 env->regs[0] = env->cp15.c13_tls2;
609 break;
610 case 0xffff0f60: /* __kernel_cmpxchg64 */
611 arm_kernel_cmpxchg64_helper(env);
612 break;
613
614 default:
615 return 1;
616 }
617 /* Jump back to the caller. */
618 addr = env->regs[14];
619 if (addr & 1) {
620 env->thumb = 1;
621 addr &= ~1;
622 }
623 env->regs[15] = addr;
624
625 return 0;
626 }
627
628 static int do_strex(CPUARMState *env)
629 {
630 uint32_t val;
631 int size;
632 int rc = 1;
633 int segv = 0;
634 uint32_t addr;
635 start_exclusive();
636 addr = env->exclusive_addr;
637 if (addr != env->exclusive_test) {
638 goto fail;
639 }
640 size = env->exclusive_info & 0xf;
641 switch (size) {
642 case 0:
643 segv = get_user_u8(val, addr);
644 break;
645 case 1:
646 segv = get_user_u16(val, addr);
647 break;
648 case 2:
649 case 3:
650 segv = get_user_u32(val, addr);
651 break;
652 default:
653 abort();
654 }
655 if (segv) {
656 env->cp15.c6_data = addr;
657 goto done;
658 }
659 if (val != env->exclusive_val) {
660 goto fail;
661 }
662 if (size == 3) {
663 segv = get_user_u32(val, addr + 4);
664 if (segv) {
665 env->cp15.c6_data = addr + 4;
666 goto done;
667 }
668 if (val != env->exclusive_high) {
669 goto fail;
670 }
671 }
672 val = env->regs[(env->exclusive_info >> 8) & 0xf];
673 switch (size) {
674 case 0:
675 segv = put_user_u8(val, addr);
676 break;
677 case 1:
678 segv = put_user_u16(val, addr);
679 break;
680 case 2:
681 case 3:
682 segv = put_user_u32(val, addr);
683 break;
684 }
685 if (segv) {
686 env->cp15.c6_data = addr;
687 goto done;
688 }
689 if (size == 3) {
690 val = env->regs[(env->exclusive_info >> 12) & 0xf];
691 segv = put_user_u32(val, addr + 4);
692 if (segv) {
693 env->cp15.c6_data = addr + 4;
694 goto done;
695 }
696 }
697 rc = 0;
698 fail:
699 env->regs[15] += 4;
700 env->regs[(env->exclusive_info >> 4) & 0xf] = rc;
701 done:
702 end_exclusive();
703 return segv;
704 }
705
706 void cpu_loop(CPUARMState *env)
707 {
708 int trapnr;
709 unsigned int n, insn;
710 target_siginfo_t info;
711 uint32_t addr;
712
713 for(;;) {
714 cpu_exec_start(env);
715 trapnr = cpu_arm_exec(env);
716 cpu_exec_end(env);
717 switch(trapnr) {
718 case EXCP_UDEF:
719 {
720 TaskState *ts = env->opaque;
721 uint32_t opcode;
722 int rc;
723
724 /* we handle the FPU emulation here, as Linux */
725 /* we get the opcode */
726 /* FIXME - what to do if get_user() fails? */
727 get_user_code_u32(opcode, env->regs[15], env->bswap_code);
728
729 rc = EmulateAll(opcode, &ts->fpa, env);
730 if (rc == 0) { /* illegal instruction */
731 info.si_signo = SIGILL;
732 info.si_errno = 0;
733 info.si_code = TARGET_ILL_ILLOPN;
734 info._sifields._sigfault._addr = env->regs[15];
735 queue_signal(env, info.si_signo, &info);
736 } else if (rc < 0) { /* FP exception */
737 int arm_fpe=0;
738
739 /* translate softfloat flags to FPSR flags */
740 if (-rc & float_flag_invalid)
741 arm_fpe |= BIT_IOC;
742 if (-rc & float_flag_divbyzero)
743 arm_fpe |= BIT_DZC;
744 if (-rc & float_flag_overflow)
745 arm_fpe |= BIT_OFC;
746 if (-rc & float_flag_underflow)
747 arm_fpe |= BIT_UFC;
748 if (-rc & float_flag_inexact)
749 arm_fpe |= BIT_IXC;
750
751 FPSR fpsr = ts->fpa.fpsr;
752 //printf("fpsr 0x%x, arm_fpe 0x%x\n",fpsr,arm_fpe);
753
754 if (fpsr & (arm_fpe << 16)) { /* exception enabled? */
755 info.si_signo = SIGFPE;
756 info.si_errno = 0;
757
758 /* ordered by priority, least first */
759 if (arm_fpe & BIT_IXC) info.si_code = TARGET_FPE_FLTRES;
760 if (arm_fpe & BIT_UFC) info.si_code = TARGET_FPE_FLTUND;
761 if (arm_fpe & BIT_OFC) info.si_code = TARGET_FPE_FLTOVF;
762 if (arm_fpe & BIT_DZC) info.si_code = TARGET_FPE_FLTDIV;
763 if (arm_fpe & BIT_IOC) info.si_code = TARGET_FPE_FLTINV;
764
765 info._sifields._sigfault._addr = env->regs[15];
766 queue_signal(env, info.si_signo, &info);
767 } else {
768 env->regs[15] += 4;
769 }
770
771 /* accumulate unenabled exceptions */
772 if ((!(fpsr & BIT_IXE)) && (arm_fpe & BIT_IXC))
773 fpsr |= BIT_IXC;
774 if ((!(fpsr & BIT_UFE)) && (arm_fpe & BIT_UFC))
775 fpsr |= BIT_UFC;
776 if ((!(fpsr & BIT_OFE)) && (arm_fpe & BIT_OFC))
777 fpsr |= BIT_OFC;
778 if ((!(fpsr & BIT_DZE)) && (arm_fpe & BIT_DZC))
779 fpsr |= BIT_DZC;
780 if ((!(fpsr & BIT_IOE)) && (arm_fpe & BIT_IOC))
781 fpsr |= BIT_IOC;
782 ts->fpa.fpsr=fpsr;
783 } else { /* everything OK */
784 /* increment PC */
785 env->regs[15] += 4;
786 }
787 }
788 break;
789 case EXCP_SWI:
790 case EXCP_BKPT:
791 {
792 env->eabi = 1;
793 /* system call */
794 if (trapnr == EXCP_BKPT) {
795 if (env->thumb) {
796 /* FIXME - what to do if get_user() fails? */
797 get_user_code_u16(insn, env->regs[15], env->bswap_code);
798 n = insn & 0xff;
799 env->regs[15] += 2;
800 } else {
801 /* FIXME - what to do if get_user() fails? */
802 get_user_code_u32(insn, env->regs[15], env->bswap_code);
803 n = (insn & 0xf) | ((insn >> 4) & 0xff0);
804 env->regs[15] += 4;
805 }
806 } else {
807 if (env->thumb) {
808 /* FIXME - what to do if get_user() fails? */
809 get_user_code_u16(insn, env->regs[15] - 2,
810 env->bswap_code);
811 n = insn & 0xff;
812 } else {
813 /* FIXME - what to do if get_user() fails? */
814 get_user_code_u32(insn, env->regs[15] - 4,
815 env->bswap_code);
816 n = insn & 0xffffff;
817 }
818 }
819
820 if (n == ARM_NR_cacheflush) {
821 /* nop */
822 } else if (n == ARM_NR_semihosting
823 || n == ARM_NR_thumb_semihosting) {
824 env->regs[0] = do_arm_semihosting (env);
825 } else if (n == 0 || n >= ARM_SYSCALL_BASE
826 || (env->thumb && n == ARM_THUMB_SYSCALL)) {
827 /* linux syscall */
828 if (env->thumb || n == 0) {
829 n = env->regs[7];
830 } else {
831 n -= ARM_SYSCALL_BASE;
832 env->eabi = 0;
833 }
834 if ( n > ARM_NR_BASE) {
835 switch (n) {
836 case ARM_NR_cacheflush:
837 /* nop */
838 break;
839 case ARM_NR_set_tls:
840 cpu_set_tls(env, env->regs[0]);
841 env->regs[0] = 0;
842 break;
843 default:
844 gemu_log("qemu: Unsupported ARM syscall: 0x%x\n",
845 n);
846 env->regs[0] = -TARGET_ENOSYS;
847 break;
848 }
849 } else {
850 env->regs[0] = do_syscall(env,
851 n,
852 env->regs[0],
853 env->regs[1],
854 env->regs[2],
855 env->regs[3],
856 env->regs[4],
857 env->regs[5],
858 0, 0);
859 }
860 } else {
861 goto error;
862 }
863 }
864 break;
865 case EXCP_INTERRUPT:
866 /* just indicate that signals should be handled asap */
867 break;
868 case EXCP_PREFETCH_ABORT:
869 addr = env->cp15.c6_insn;
870 goto do_segv;
871 case EXCP_DATA_ABORT:
872 addr = env->cp15.c6_data;
873 do_segv:
874 {
875 info.si_signo = SIGSEGV;
876 info.si_errno = 0;
877 /* XXX: check env->error_code */
878 info.si_code = TARGET_SEGV_MAPERR;
879 info._sifields._sigfault._addr = addr;
880 queue_signal(env, info.si_signo, &info);
881 }
882 break;
883 case EXCP_DEBUG:
884 {
885 int sig;
886
887 sig = gdb_handlesig (env, TARGET_SIGTRAP);
888 if (sig)
889 {
890 info.si_signo = sig;
891 info.si_errno = 0;
892 info.si_code = TARGET_TRAP_BRKPT;
893 queue_signal(env, info.si_signo, &info);
894 }
895 }
896 break;
897 case EXCP_KERNEL_TRAP:
898 if (do_kernel_trap(env))
899 goto error;
900 break;
901 case EXCP_STREX:
902 if (do_strex(env)) {
903 addr = env->cp15.c6_data;
904 goto do_segv;
905 }
906 break;
907 default:
908 error:
909 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
910 trapnr);
911 cpu_dump_state(env, stderr, fprintf, 0);
912 abort();
913 }
914 process_pending_signals(env);
915 }
916 }
917
918 #endif
919
920 #ifdef TARGET_UNICORE32
921
922 void cpu_loop(CPUUniCore32State *env)
923 {
924 int trapnr;
925 unsigned int n, insn;
926 target_siginfo_t info;
927
928 for (;;) {
929 cpu_exec_start(env);
930 trapnr = uc32_cpu_exec(env);
931 cpu_exec_end(env);
932 switch (trapnr) {
933 case UC32_EXCP_PRIV:
934 {
935 /* system call */
936 get_user_u32(insn, env->regs[31] - 4);
937 n = insn & 0xffffff;
938
939 if (n >= UC32_SYSCALL_BASE) {
940 /* linux syscall */
941 n -= UC32_SYSCALL_BASE;
942 if (n == UC32_SYSCALL_NR_set_tls) {
943 cpu_set_tls(env, env->regs[0]);
944 env->regs[0] = 0;
945 } else {
946 env->regs[0] = do_syscall(env,
947 n,
948 env->regs[0],
949 env->regs[1],
950 env->regs[2],
951 env->regs[3],
952 env->regs[4],
953 env->regs[5],
954 0, 0);
955 }
956 } else {
957 goto error;
958 }
959 }
960 break;
961 case UC32_EXCP_TRAP:
962 info.si_signo = SIGSEGV;
963 info.si_errno = 0;
964 /* XXX: check env->error_code */
965 info.si_code = TARGET_SEGV_MAPERR;
966 info._sifields._sigfault._addr = env->cp0.c4_faultaddr;
967 queue_signal(env, info.si_signo, &info);
968 break;
969 case EXCP_INTERRUPT:
970 /* just indicate that signals should be handled asap */
971 break;
972 case EXCP_DEBUG:
973 {
974 int sig;
975
976 sig = gdb_handlesig(env, TARGET_SIGTRAP);
977 if (sig) {
978 info.si_signo = sig;
979 info.si_errno = 0;
980 info.si_code = TARGET_TRAP_BRKPT;
981 queue_signal(env, info.si_signo, &info);
982 }
983 }
984 break;
985 default:
986 goto error;
987 }
988 process_pending_signals(env);
989 }
990
991 error:
992 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr);
993 cpu_dump_state(env, stderr, fprintf, 0);
994 abort();
995 }
996 #endif
997
998 #ifdef TARGET_SPARC
999 #define SPARC64_STACK_BIAS 2047
1000
1001 //#define DEBUG_WIN
1002
1003 /* WARNING: dealing with register windows _is_ complicated. More info
1004 can be found at http://www.sics.se/~psm/sparcstack.html */
1005 static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
1006 {
1007 index = (index + cwp * 16) % (16 * env->nwindows);
1008 /* wrap handling : if cwp is on the last window, then we use the
1009 registers 'after' the end */
1010 if (index < 8 && env->cwp == env->nwindows - 1)
1011 index += 16 * env->nwindows;
1012 return index;
1013 }
1014
1015 /* save the register window 'cwp1' */
1016 static inline void save_window_offset(CPUSPARCState *env, int cwp1)
1017 {
1018 unsigned int i;
1019 abi_ulong sp_ptr;
1020
1021 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
1022 #ifdef TARGET_SPARC64
1023 if (sp_ptr & 3)
1024 sp_ptr += SPARC64_STACK_BIAS;
1025 #endif
1026 #if defined(DEBUG_WIN)
1027 printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n",
1028 sp_ptr, cwp1);
1029 #endif
1030 for(i = 0; i < 16; i++) {
1031 /* FIXME - what to do if put_user() fails? */
1032 put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
1033 sp_ptr += sizeof(abi_ulong);
1034 }
1035 }
1036
1037 static void save_window(CPUSPARCState *env)
1038 {
1039 #ifndef TARGET_SPARC64
1040 unsigned int new_wim;
1041 new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) &
1042 ((1LL << env->nwindows) - 1);
1043 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
1044 env->wim = new_wim;
1045 #else
1046 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
1047 env->cansave++;
1048 env->canrestore--;
1049 #endif
1050 }
1051
1052 static void restore_window(CPUSPARCState *env)
1053 {
1054 #ifndef TARGET_SPARC64
1055 unsigned int new_wim;
1056 #endif
1057 unsigned int i, cwp1;
1058 abi_ulong sp_ptr;
1059
1060 #ifndef TARGET_SPARC64
1061 new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) &
1062 ((1LL << env->nwindows) - 1);
1063 #endif
1064
1065 /* restore the invalid window */
1066 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
1067 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
1068 #ifdef TARGET_SPARC64
1069 if (sp_ptr & 3)
1070 sp_ptr += SPARC64_STACK_BIAS;
1071 #endif
1072 #if defined(DEBUG_WIN)
1073 printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n",
1074 sp_ptr, cwp1);
1075 #endif
1076 for(i = 0; i < 16; i++) {
1077 /* FIXME - what to do if get_user() fails? */
1078 get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
1079 sp_ptr += sizeof(abi_ulong);
1080 }
1081 #ifdef TARGET_SPARC64
1082 env->canrestore++;
1083 if (env->cleanwin < env->nwindows - 1)
1084 env->cleanwin++;
1085 env->cansave--;
1086 #else
1087 env->wim = new_wim;
1088 #endif
1089 }
1090
1091 static void flush_windows(CPUSPARCState *env)
1092 {
1093 int offset, cwp1;
1094
1095 offset = 1;
1096 for(;;) {
1097 /* if restore would invoke restore_window(), then we can stop */
1098 cwp1 = cpu_cwp_inc(env, env->cwp + offset);
1099 #ifndef TARGET_SPARC64
1100 if (env->wim & (1 << cwp1))
1101 break;
1102 #else
1103 if (env->canrestore == 0)
1104 break;
1105 env->cansave++;
1106 env->canrestore--;
1107 #endif
1108 save_window_offset(env, cwp1);
1109 offset++;
1110 }
1111 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
1112 #ifndef TARGET_SPARC64
1113 /* set wim so that restore will reload the registers */
1114 env->wim = 1 << cwp1;
1115 #endif
1116 #if defined(DEBUG_WIN)
1117 printf("flush_windows: nb=%d\n", offset - 1);
1118 #endif
1119 }
1120
1121 void cpu_loop (CPUSPARCState *env)
1122 {
1123 int trapnr;
1124 abi_long ret;
1125 target_siginfo_t info;
1126
1127 while (1) {
1128 trapnr = cpu_sparc_exec (env);
1129
1130 switch (trapnr) {
1131 #ifndef TARGET_SPARC64
1132 case 0x88:
1133 case 0x90:
1134 #else
1135 case 0x110:
1136 case 0x16d:
1137 #endif
1138 ret = do_syscall (env, env->gregs[1],
1139 env->regwptr[0], env->regwptr[1],
1140 env->regwptr[2], env->regwptr[3],
1141 env->regwptr[4], env->regwptr[5],
1142 0, 0);
1143 if ((abi_ulong)ret >= (abi_ulong)(-515)) {
1144 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
1145 env->xcc |= PSR_CARRY;
1146 #else
1147 env->psr |= PSR_CARRY;
1148 #endif
1149 ret = -ret;
1150 } else {
1151 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
1152 env->xcc &= ~PSR_CARRY;
1153 #else
1154 env->psr &= ~PSR_CARRY;
1155 #endif
1156 }
1157 env->regwptr[0] = ret;
1158 /* next instruction */
1159 env->pc = env->npc;
1160 env->npc = env->npc + 4;
1161 break;
1162 case 0x83: /* flush windows */
1163 #ifdef TARGET_ABI32
1164 case 0x103:
1165 #endif
1166 flush_windows(env);
1167 /* next instruction */
1168 env->pc = env->npc;
1169 env->npc = env->npc + 4;
1170 break;
1171 #ifndef TARGET_SPARC64
1172 case TT_WIN_OVF: /* window overflow */
1173 save_window(env);
1174 break;
1175 case TT_WIN_UNF: /* window underflow */
1176 restore_window(env);
1177 break;
1178 case TT_TFAULT:
1179 case TT_DFAULT:
1180 {
1181 info.si_signo = TARGET_SIGSEGV;
1182 info.si_errno = 0;
1183 /* XXX: check env->error_code */
1184 info.si_code = TARGET_SEGV_MAPERR;
1185 info._sifields._sigfault._addr = env->mmuregs[4];
1186 queue_signal(env, info.si_signo, &info);
1187 }
1188 break;
1189 #else
1190 case TT_SPILL: /* window overflow */
1191 save_window(env);
1192 break;
1193 case TT_FILL: /* window underflow */
1194 restore_window(env);
1195 break;
1196 case TT_TFAULT:
1197 case TT_DFAULT:
1198 {
1199 info.si_signo = TARGET_SIGSEGV;
1200 info.si_errno = 0;
1201 /* XXX: check env->error_code */
1202 info.si_code = TARGET_SEGV_MAPERR;
1203 if (trapnr == TT_DFAULT)
1204 info._sifields._sigfault._addr = env->dmmuregs[4];
1205 else
1206 info._sifields._sigfault._addr = cpu_tsptr(env)->tpc;
1207 queue_signal(env, info.si_signo, &info);
1208 }
1209 break;
1210 #ifndef TARGET_ABI32
1211 case 0x16e:
1212 flush_windows(env);
1213 sparc64_get_context(env);
1214 break;
1215 case 0x16f:
1216 flush_windows(env);
1217 sparc64_set_context(env);
1218 break;
1219 #endif
1220 #endif
1221 case EXCP_INTERRUPT:
1222 /* just indicate that signals should be handled asap */
1223 break;
1224 case TT_ILL_INSN:
1225 {
1226 info.si_signo = TARGET_SIGILL;
1227 info.si_errno = 0;
1228 info.si_code = TARGET_ILL_ILLOPC;
1229 info._sifields._sigfault._addr = env->pc;
1230 queue_signal(env, info.si_signo, &info);
1231 }
1232 break;
1233 case EXCP_DEBUG:
1234 {
1235 int sig;
1236
1237 sig = gdb_handlesig (env, TARGET_SIGTRAP);
1238 if (sig)
1239 {
1240 info.si_signo = sig;
1241 info.si_errno = 0;
1242 info.si_code = TARGET_TRAP_BRKPT;
1243 queue_signal(env, info.si_signo, &info);
1244 }
1245 }
1246 break;
1247 default:
1248 printf ("Unhandled trap: 0x%x\n", trapnr);
1249 cpu_dump_state(env, stderr, fprintf, 0);
1250 exit (1);
1251 }
1252 process_pending_signals (env);
1253 }
1254 }
1255
1256 #endif
1257
1258 #ifdef TARGET_PPC
1259 static inline uint64_t cpu_ppc_get_tb(CPUPPCState *env)
1260 {
1261 /* TO FIX */
1262 return 0;
1263 }
1264
1265 uint64_t cpu_ppc_load_tbl(CPUPPCState *env)
1266 {
1267 return cpu_ppc_get_tb(env);
1268 }
1269
1270 uint32_t cpu_ppc_load_tbu(CPUPPCState *env)
1271 {
1272 return cpu_ppc_get_tb(env) >> 32;
1273 }
1274
1275 uint64_t cpu_ppc_load_atbl(CPUPPCState *env)
1276 {
1277 return cpu_ppc_get_tb(env);
1278 }
1279
1280 uint32_t cpu_ppc_load_atbu(CPUPPCState *env)
1281 {
1282 return cpu_ppc_get_tb(env) >> 32;
1283 }
1284
1285 uint32_t cpu_ppc601_load_rtcu(CPUPPCState *env)
1286 __attribute__ (( alias ("cpu_ppc_load_tbu") ));
1287
1288 uint32_t cpu_ppc601_load_rtcl(CPUPPCState *env)
1289 {
1290 return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
1291 }
1292
1293 /* XXX: to be fixed */
1294 int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, uint32_t *valp)
1295 {
1296 return -1;
1297 }
1298
1299 int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, uint32_t val)
1300 {
1301 return -1;
1302 }
1303
1304 #define EXCP_DUMP(env, fmt, ...) \
1305 do { \
1306 fprintf(stderr, fmt , ## __VA_ARGS__); \
1307 cpu_dump_state(env, stderr, fprintf, 0); \
1308 qemu_log(fmt, ## __VA_ARGS__); \
1309 if (logfile) \
1310 log_cpu_state(env, 0); \
1311 } while (0)
1312
1313 static int do_store_exclusive(CPUPPCState *env)
1314 {
1315 target_ulong addr;
1316 target_ulong page_addr;
1317 target_ulong val;
1318 int flags;
1319 int segv = 0;
1320
1321 addr = env->reserve_ea;
1322 page_addr = addr & TARGET_PAGE_MASK;
1323 start_exclusive();
1324 mmap_lock();
1325 flags = page_get_flags(page_addr);
1326 if ((flags & PAGE_READ) == 0) {
1327 segv = 1;
1328 } else {
1329 int reg = env->reserve_info & 0x1f;
1330 int size = (env->reserve_info >> 5) & 0xf;
1331 int stored = 0;
1332
1333 if (addr == env->reserve_addr) {
1334 switch (size) {
1335 case 1: segv = get_user_u8(val, addr); break;
1336 case 2: segv = get_user_u16(val, addr); break;
1337 case 4: segv = get_user_u32(val, addr); break;
1338 #if defined(TARGET_PPC64)
1339 case 8: segv = get_user_u64(val, addr); break;
1340 #endif
1341 default: abort();
1342 }
1343 if (!segv && val == env->reserve_val) {
1344 val = env->gpr[reg];
1345 switch (size) {
1346 case 1: segv = put_user_u8(val, addr); break;
1347 case 2: segv = put_user_u16(val, addr); break;
1348 case 4: segv = put_user_u32(val, addr); break;
1349 #if defined(TARGET_PPC64)
1350 case 8: segv = put_user_u64(val, addr); break;
1351 #endif
1352 default: abort();
1353 }
1354 if (!segv) {
1355 stored = 1;
1356 }
1357 }
1358 }
1359 env->crf[0] = (stored << 1) | xer_so;
1360 env->reserve_addr = (target_ulong)-1;
1361 }
1362 if (!segv) {
1363 env->nip += 4;
1364 }
1365 mmap_unlock();
1366 end_exclusive();
1367 return segv;
1368 }
1369
1370 void cpu_loop(CPUPPCState *env)
1371 {
1372 target_siginfo_t info;
1373 int trapnr;
1374 target_ulong ret;
1375
1376 for(;;) {
1377 cpu_exec_start(env);
1378 trapnr = cpu_ppc_exec(env);
1379 cpu_exec_end(env);
1380 switch(trapnr) {
1381 case POWERPC_EXCP_NONE:
1382 /* Just go on */
1383 break;
1384 case POWERPC_EXCP_CRITICAL: /* Critical input */
1385 cpu_abort(env, "Critical interrupt while in user mode. "
1386 "Aborting\n");
1387 break;
1388 case POWERPC_EXCP_MCHECK: /* Machine check exception */
1389 cpu_abort(env, "Machine check exception while in user mode. "
1390 "Aborting\n");
1391 break;
1392 case POWERPC_EXCP_DSI: /* Data storage exception */
1393 EXCP_DUMP(env, "Invalid data memory access: 0x" TARGET_FMT_lx "\n",
1394 env->spr[SPR_DAR]);
1395 /* XXX: check this. Seems bugged */
1396 switch (env->error_code & 0xFF000000) {
1397 case 0x40000000:
1398 info.si_signo = TARGET_SIGSEGV;
1399 info.si_errno = 0;
1400 info.si_code = TARGET_SEGV_MAPERR;
1401 break;
1402 case 0x04000000:
1403 info.si_signo = TARGET_SIGILL;
1404 info.si_errno = 0;
1405 info.si_code = TARGET_ILL_ILLADR;
1406 break;
1407 case 0x08000000:
1408 info.si_signo = TARGET_SIGSEGV;
1409 info.si_errno = 0;
1410 info.si_code = TARGET_SEGV_ACCERR;
1411 break;
1412 default:
1413 /* Let's send a regular segfault... */
1414 EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
1415 env->error_code);
1416 info.si_signo = TARGET_SIGSEGV;
1417 info.si_errno = 0;
1418 info.si_code = TARGET_SEGV_MAPERR;
1419 break;
1420 }
1421 info._sifields._sigfault._addr = env->nip;
1422 queue_signal(env, info.si_signo, &info);
1423 break;
1424 case POWERPC_EXCP_ISI: /* Instruction storage exception */
1425 EXCP_DUMP(env, "Invalid instruction fetch: 0x\n" TARGET_FMT_lx
1426 "\n", env->spr[SPR_SRR0]);
1427 /* XXX: check this */
1428 switch (env->error_code & 0xFF000000) {
1429 case 0x40000000:
1430 info.si_signo = TARGET_SIGSEGV;
1431 info.si_errno = 0;
1432 info.si_code = TARGET_SEGV_MAPERR;
1433 break;
1434 case 0x10000000:
1435 case 0x08000000:
1436 info.si_signo = TARGET_SIGSEGV;
1437 info.si_errno = 0;
1438 info.si_code = TARGET_SEGV_ACCERR;
1439 break;
1440 default:
1441 /* Let's send a regular segfault... */
1442 EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
1443 env->error_code);
1444 info.si_signo = TARGET_SIGSEGV;
1445 info.si_errno = 0;
1446 info.si_code = TARGET_SEGV_MAPERR;
1447 break;
1448 }
1449 info._sifields._sigfault._addr = env->nip - 4;
1450 queue_signal(env, info.si_signo, &info);
1451 break;
1452 case POWERPC_EXCP_EXTERNAL: /* External input */
1453 cpu_abort(env, "External interrupt while in user mode. "
1454 "Aborting\n");
1455 break;
1456 case POWERPC_EXCP_ALIGN: /* Alignment exception */
1457 EXCP_DUMP(env, "Unaligned memory access\n");
1458 /* XXX: check this */
1459 info.si_signo = TARGET_SIGBUS;
1460 info.si_errno = 0;
1461 info.si_code = TARGET_BUS_ADRALN;
1462 info._sifields._sigfault._addr = env->nip - 4;
1463 queue_signal(env, info.si_signo, &info);
1464 break;
1465 case POWERPC_EXCP_PROGRAM: /* Program exception */
1466 /* XXX: check this */
1467 switch (env->error_code & ~0xF) {
1468 case POWERPC_EXCP_FP:
1469 EXCP_DUMP(env, "Floating point program exception\n");
1470 info.si_signo = TARGET_SIGFPE;
1471 info.si_errno = 0;
1472 switch (env->error_code & 0xF) {
1473 case POWERPC_EXCP_FP_OX:
1474 info.si_code = TARGET_FPE_FLTOVF;
1475 break;
1476 case POWERPC_EXCP_FP_UX:
1477 info.si_code = TARGET_FPE_FLTUND;
1478 break;
1479 case POWERPC_EXCP_FP_ZX:
1480 case POWERPC_EXCP_FP_VXZDZ:
1481 info.si_code = TARGET_FPE_FLTDIV;
1482 break;
1483 case POWERPC_EXCP_FP_XX:
1484 info.si_code = TARGET_FPE_FLTRES;
1485 break;
1486 case POWERPC_EXCP_FP_VXSOFT:
1487 info.si_code = TARGET_FPE_FLTINV;
1488 break;
1489 case POWERPC_EXCP_FP_VXSNAN:
1490 case POWERPC_EXCP_FP_VXISI:
1491 case POWERPC_EXCP_FP_VXIDI:
1492 case POWERPC_EXCP_FP_VXIMZ:
1493 case POWERPC_EXCP_FP_VXVC:
1494 case POWERPC_EXCP_FP_VXSQRT:
1495 case POWERPC_EXCP_FP_VXCVI:
1496 info.si_code = TARGET_FPE_FLTSUB;
1497 break;
1498 default:
1499 EXCP_DUMP(env, "Unknown floating point exception (%02x)\n",
1500 env->error_code);
1501 break;
1502 }
1503 break;
1504 case POWERPC_EXCP_INVAL:
1505 EXCP_DUMP(env, "Invalid instruction\n");
1506 info.si_signo = TARGET_SIGILL;
1507 info.si_errno = 0;
1508 switch (env->error_code & 0xF) {
1509 case POWERPC_EXCP_INVAL_INVAL:
1510 info.si_code = TARGET_ILL_ILLOPC;
1511 break;
1512 case POWERPC_EXCP_INVAL_LSWX:
1513 info.si_code = TARGET_ILL_ILLOPN;
1514 break;
1515 case POWERPC_EXCP_INVAL_SPR:
1516 info.si_code = TARGET_ILL_PRVREG;
1517 break;
1518 case POWERPC_EXCP_INVAL_FP:
1519 info.si_code = TARGET_ILL_COPROC;
1520 break;
1521 default:
1522 EXCP_DUMP(env, "Unknown invalid operation (%02x)\n",
1523 env->error_code & 0xF);
1524 info.si_code = TARGET_ILL_ILLADR;
1525 break;
1526 }
1527 break;
1528 case POWERPC_EXCP_PRIV:
1529 EXCP_DUMP(env, "Privilege violation\n");
1530 info.si_signo = TARGET_SIGILL;
1531 info.si_errno = 0;
1532 switch (env->error_code & 0xF) {
1533 case POWERPC_EXCP_PRIV_OPC:
1534 info.si_code = TARGET_ILL_PRVOPC;
1535 break;
1536 case POWERPC_EXCP_PRIV_REG:
1537 info.si_code = TARGET_ILL_PRVREG;
1538 break;
1539 default:
1540 EXCP_DUMP(env, "Unknown privilege violation (%02x)\n",
1541 env->error_code & 0xF);
1542 info.si_code = TARGET_ILL_PRVOPC;
1543 break;
1544 }
1545 break;
1546 case POWERPC_EXCP_TRAP:
1547 cpu_abort(env, "Tried to call a TRAP\n");
1548 break;
1549 default:
1550 /* Should not happen ! */
1551 cpu_abort(env, "Unknown program exception (%02x)\n",
1552 env->error_code);
1553 break;
1554 }
1555 info._sifields._sigfault._addr = env->nip - 4;
1556 queue_signal(env, info.si_signo, &info);
1557 break;
1558 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
1559 EXCP_DUMP(env, "No floating point allowed\n");
1560 info.si_signo = TARGET_SIGILL;
1561 info.si_errno = 0;
1562 info.si_code = TARGET_ILL_COPROC;
1563 info._sifields._sigfault._addr = env->nip - 4;
1564 queue_signal(env, info.si_signo, &info);
1565 break;
1566 case POWERPC_EXCP_SYSCALL: /* System call exception */
1567 cpu_abort(env, "Syscall exception while in user mode. "
1568 "Aborting\n");
1569 break;
1570 case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
1571 EXCP_DUMP(env, "No APU instruction allowed\n");
1572 info.si_signo = TARGET_SIGILL;
1573 info.si_errno = 0;
1574 info.si_code = TARGET_ILL_COPROC;
1575 info._sifields._sigfault._addr = env->nip - 4;
1576 queue_signal(env, info.si_signo, &info);
1577 break;
1578 case POWERPC_EXCP_DECR: /* Decrementer exception */
1579 cpu_abort(env, "Decrementer interrupt while in user mode. "
1580 "Aborting\n");
1581 break;
1582 case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
1583 cpu_abort(env, "Fix interval timer interrupt while in user mode. "
1584 "Aborting\n");
1585 break;
1586 case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
1587 cpu_abort(env, "Watchdog timer interrupt while in user mode. "
1588 "Aborting\n");
1589 break;
1590 case POWERPC_EXCP_DTLB: /* Data TLB error */
1591 cpu_abort(env, "Data TLB exception while in user mode. "
1592 "Aborting\n");
1593 break;
1594 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
1595 cpu_abort(env, "Instruction TLB exception while in user mode. "
1596 "Aborting\n");
1597 break;
1598 case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */
1599 EXCP_DUMP(env, "No SPE/floating-point instruction allowed\n");
1600 info.si_signo = TARGET_SIGILL;
1601 info.si_errno = 0;
1602 info.si_code = TARGET_ILL_COPROC;
1603 info._sifields._sigfault._addr = env->nip - 4;
1604 queue_signal(env, info.si_signo, &info);
1605 break;
1606 case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */
1607 cpu_abort(env, "Embedded floating-point data IRQ not handled\n");
1608 break;
1609 case POWERPC_EXCP_EFPRI: /* Embedded floating-point round IRQ */
1610 cpu_abort(env, "Embedded floating-point round IRQ not handled\n");
1611 break;
1612 case POWERPC_EXCP_EPERFM: /* Embedded performance monitor IRQ */
1613 cpu_abort(env, "Performance monitor exception not handled\n");
1614 break;
1615 case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
1616 cpu_abort(env, "Doorbell interrupt while in user mode. "
1617 "Aborting\n");
1618 break;
1619 case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
1620 cpu_abort(env, "Doorbell critical interrupt while in user mode. "
1621 "Aborting\n");
1622 break;
1623 case POWERPC_EXCP_RESET: /* System reset exception */
1624 cpu_abort(env, "Reset interrupt while in user mode. "
1625 "Aborting\n");
1626 break;
1627 case POWERPC_EXCP_DSEG: /* Data segment exception */
1628 cpu_abort(env, "Data segment exception while in user mode. "
1629 "Aborting\n");
1630 break;
1631 case POWERPC_EXCP_ISEG: /* Instruction segment exception */
1632 cpu_abort(env, "Instruction segment exception "
1633 "while in user mode. Aborting\n");
1634 break;
1635 /* PowerPC 64 with hypervisor mode support */
1636 case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
1637 cpu_abort(env, "Hypervisor decrementer interrupt "
1638 "while in user mode. Aborting\n");
1639 break;
1640 case POWERPC_EXCP_TRACE: /* Trace exception */
1641 /* Nothing to do:
1642 * we use this exception to emulate step-by-step execution mode.
1643 */
1644 break;
1645 /* PowerPC 64 with hypervisor mode support */
1646 case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
1647 cpu_abort(env, "Hypervisor data storage exception "
1648 "while in user mode. Aborting\n");
1649 break;
1650 case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */
1651 cpu_abort(env, "Hypervisor instruction storage exception "
1652 "while in user mode. Aborting\n");
1653 break;
1654 case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
1655 cpu_abort(env, "Hypervisor data segment exception "
1656 "while in user mode. Aborting\n");
1657 break;
1658 case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */
1659 cpu_abort(env, "Hypervisor instruction segment exception "
1660 "while in user mode. Aborting\n");
1661 break;
1662 case POWERPC_EXCP_VPU: /* Vector unavailable exception */
1663 EXCP_DUMP(env, "No Altivec instructions allowed\n");
1664 info.si_signo = TARGET_SIGILL;
1665 info.si_errno = 0;
1666 info.si_code = TARGET_ILL_COPROC;
1667 info._sifields._sigfault._addr = env->nip - 4;
1668 queue_signal(env, info.si_signo, &info);
1669 break;
1670 case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */
1671 cpu_abort(env, "Programmable interval timer interrupt "
1672 "while in user mode. Aborting\n");
1673 break;
1674 case POWERPC_EXCP_IO: /* IO error exception */
1675 cpu_abort(env, "IO error exception while in user mode. "
1676 "Aborting\n");
1677 break;
1678 case POWERPC_EXCP_RUNM: /* Run mode exception */
1679 cpu_abort(env, "Run mode exception while in user mode. "
1680 "Aborting\n");
1681 break;
1682 case POWERPC_EXCP_EMUL: /* Emulation trap exception */
1683 cpu_abort(env, "Emulation trap exception not handled\n");
1684 break;
1685 case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
1686 cpu_abort(env, "Instruction fetch TLB exception "
1687 "while in user-mode. Aborting");
1688 break;
1689 case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
1690 cpu_abort(env, "Data load TLB exception while in user-mode. "
1691 "Aborting");
1692 break;
1693 case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
1694 cpu_abort(env, "Data store TLB exception while in user-mode. "
1695 "Aborting");
1696 break;
1697 case POWERPC_EXCP_FPA: /* Floating-point assist exception */
1698 cpu_abort(env, "Floating-point assist exception not handled\n");
1699 break;
1700 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
1701 cpu_abort(env, "Instruction address breakpoint exception "
1702 "not handled\n");
1703 break;
1704 case POWERPC_EXCP_SMI: /* System management interrupt */
1705 cpu_abort(env, "System management interrupt while in user mode. "
1706 "Aborting\n");
1707 break;
1708 case POWERPC_EXCP_THERM: /* Thermal interrupt */
1709 cpu_abort(env, "Thermal interrupt interrupt while in user mode. "
1710 "Aborting\n");
1711 break;
1712 case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */
1713 cpu_abort(env, "Performance monitor exception not handled\n");
1714 break;
1715 case POWERPC_EXCP_VPUA: /* Vector assist exception */
1716 cpu_abort(env, "Vector assist exception not handled\n");
1717 break;
1718 case POWERPC_EXCP_SOFTP: /* Soft patch exception */
1719 cpu_abort(env, "Soft patch exception not handled\n");
1720 break;
1721 case POWERPC_EXCP_MAINT: /* Maintenance exception */
1722 cpu_abort(env, "Maintenance exception while in user mode. "
1723 "Aborting\n");
1724 break;
1725 case POWERPC_EXCP_STOP: /* stop translation */
1726 /* We did invalidate the instruction cache. Go on */
1727 break;
1728 case POWERPC_EXCP_BRANCH: /* branch instruction: */
1729 /* We just stopped because of a branch. Go on */
1730 break;
1731 case POWERPC_EXCP_SYSCALL_USER:
1732 /* system call in user-mode emulation */
1733 /* WARNING:
1734 * PPC ABI uses overflow flag in cr0 to signal an error
1735 * in syscalls.
1736 */
1737 env->crf[0] &= ~0x1;
1738 ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
1739 env->gpr[5], env->gpr[6], env->gpr[7],
1740 env->gpr[8], 0, 0);
1741 if (ret == (target_ulong)(-TARGET_QEMU_ESIGRETURN)) {
1742 /* Returning from a successful sigreturn syscall.
1743 Avoid corrupting register state. */
1744 break;
1745 }
1746 if (ret > (target_ulong)(-515)) {
1747 env->crf[0] |= 0x1;
1748 ret = -ret;
1749 }
1750 env->gpr[3] = ret;
1751 break;
1752 case POWERPC_EXCP_STCX:
1753 if (do_store_exclusive(env)) {
1754 info.si_signo = TARGET_SIGSEGV;
1755 info.si_errno = 0;
1756 info.si_code = TARGET_SEGV_MAPERR;
1757 info._sifields._sigfault._addr = env->nip;
1758 queue_signal(env, info.si_signo, &info);
1759 }
1760 break;
1761 case EXCP_DEBUG:
1762 {
1763 int sig;
1764
1765 sig = gdb_handlesig(env, TARGET_SIGTRAP);
1766 if (sig) {
1767 info.si_signo = sig;
1768 info.si_errno = 0;
1769 info.si_code = TARGET_TRAP_BRKPT;
1770 queue_signal(env, info.si_signo, &info);
1771 }
1772 }
1773 break;
1774 case EXCP_INTERRUPT:
1775 /* just indicate that signals should be handled asap */
1776 break;
1777 default:
1778 cpu_abort(env, "Unknown exception 0x%d. Aborting\n", trapnr);
1779 break;
1780 }
1781 process_pending_signals(env);
1782 }
1783 }
1784 #endif
1785
1786 #ifdef TARGET_MIPS
1787
1788 #define MIPS_SYS(name, args) args,
1789
1790 static const uint8_t mips_syscall_args[] = {
1791 MIPS_SYS(sys_syscall , 8) /* 4000 */
1792 MIPS_SYS(sys_exit , 1)
1793 MIPS_SYS(sys_fork , 0)
1794 MIPS_SYS(sys_read , 3)
1795 MIPS_SYS(sys_write , 3)
1796 MIPS_SYS(sys_open , 3) /* 4005 */
1797 MIPS_SYS(sys_close , 1)
1798 MIPS_SYS(sys_waitpid , 3)
1799 MIPS_SYS(sys_creat , 2)
1800 MIPS_SYS(sys_link , 2)
1801 MIPS_SYS(sys_unlink , 1) /* 4010 */
1802 MIPS_SYS(sys_execve , 0)
1803 MIPS_SYS(sys_chdir , 1)
1804 MIPS_SYS(sys_time , 1)
1805 MIPS_SYS(sys_mknod , 3)
1806 MIPS_SYS(sys_chmod , 2) /* 4015 */
1807 MIPS_SYS(sys_lchown , 3)
1808 MIPS_SYS(sys_ni_syscall , 0)
1809 MIPS_SYS(sys_ni_syscall , 0) /* was sys_stat */
1810 MIPS_SYS(sys_lseek , 3)
1811 MIPS_SYS(sys_getpid , 0) /* 4020 */
1812 MIPS_SYS(sys_mount , 5)
1813 MIPS_SYS(sys_oldumount , 1)
1814 MIPS_SYS(sys_setuid , 1)
1815 MIPS_SYS(sys_getuid , 0)
1816 MIPS_SYS(sys_stime , 1) /* 4025 */
1817 MIPS_SYS(sys_ptrace , 4)
1818 MIPS_SYS(sys_alarm , 1)
1819 MIPS_SYS(sys_ni_syscall , 0) /* was sys_fstat */
1820 MIPS_SYS(sys_pause , 0)
1821 MIPS_SYS(sys_utime , 2) /* 4030 */
1822 MIPS_SYS(sys_ni_syscall , 0)
1823 MIPS_SYS(sys_ni_syscall , 0)
1824 MIPS_SYS(sys_access , 2)
1825 MIPS_SYS(sys_nice , 1)
1826 MIPS_SYS(sys_ni_syscall , 0) /* 4035 */
1827 MIPS_SYS(sys_sync , 0)
1828 MIPS_SYS(sys_kill , 2)
1829 MIPS_SYS(sys_rename , 2)
1830 MIPS_SYS(sys_mkdir , 2)
1831 MIPS_SYS(sys_rmdir , 1) /* 4040 */
1832 MIPS_SYS(sys_dup , 1)
1833 MIPS_SYS(sys_pipe , 0)
1834 MIPS_SYS(sys_times , 1)
1835 MIPS_SYS(sys_ni_syscall , 0)
1836 MIPS_SYS(sys_brk , 1) /* 4045 */
1837 MIPS_SYS(sys_setgid , 1)
1838 MIPS_SYS(sys_getgid , 0)
1839 MIPS_SYS(sys_ni_syscall , 0) /* was signal(2) */
1840 MIPS_SYS(sys_geteuid , 0)
1841 MIPS_SYS(sys_getegid , 0) /* 4050 */
1842 MIPS_SYS(sys_acct , 0)
1843 MIPS_SYS(sys_umount , 2)
1844 MIPS_SYS(sys_ni_syscall , 0)
1845 MIPS_SYS(sys_ioctl , 3)
1846 MIPS_SYS(sys_fcntl , 3) /* 4055 */
1847 MIPS_SYS(sys_ni_syscall , 2)
1848 MIPS_SYS(sys_setpgid , 2)
1849 MIPS_SYS(sys_ni_syscall , 0)
1850 MIPS_SYS(sys_olduname , 1)
1851 MIPS_SYS(sys_umask , 1) /* 4060 */
1852 MIPS_SYS(sys_chroot , 1)
1853 MIPS_SYS(sys_ustat , 2)
1854 MIPS_SYS(sys_dup2 , 2)
1855 MIPS_SYS(sys_getppid , 0)
1856 MIPS_SYS(sys_getpgrp , 0) /* 4065 */
1857 MIPS_SYS(sys_setsid , 0)
1858 MIPS_SYS(sys_sigaction , 3)
1859 MIPS_SYS(sys_sgetmask , 0)
1860 MIPS_SYS(sys_ssetmask , 1)
1861 MIPS_SYS(sys_setreuid , 2) /* 4070 */
1862 MIPS_SYS(sys_setregid , 2)
1863 MIPS_SYS(sys_sigsuspend , 0)
1864 MIPS_SYS(sys_sigpending , 1)
1865 MIPS_SYS(sys_sethostname , 2)
1866 MIPS_SYS(sys_setrlimit , 2) /* 4075 */
1867 MIPS_SYS(sys_getrlimit , 2)
1868 MIPS_SYS(sys_getrusage , 2)
1869 MIPS_SYS(sys_gettimeofday, 2)
1870 MIPS_SYS(sys_settimeofday, 2)
1871 MIPS_SYS(sys_getgroups , 2) /* 4080 */
1872 MIPS_SYS(sys_setgroups , 2)
1873 MIPS_SYS(sys_ni_syscall , 0) /* old_select */
1874 MIPS_SYS(sys_symlink , 2)
1875 MIPS_SYS(sys_ni_syscall , 0) /* was sys_lstat */
1876 MIPS_SYS(sys_readlink , 3) /* 4085 */
1877 MIPS_SYS(sys_uselib , 1)
1878 MIPS_SYS(sys_swapon , 2)
1879 MIPS_SYS(sys_reboot , 3)
1880 MIPS_SYS(old_readdir , 3)
1881 MIPS_SYS(old_mmap , 6) /* 4090 */
1882 MIPS_SYS(sys_munmap , 2)
1883 MIPS_SYS(sys_truncate , 2)
1884 MIPS_SYS(sys_ftruncate , 2)
1885 MIPS_SYS(sys_fchmod , 2)
1886 MIPS_SYS(sys_fchown , 3) /* 4095 */
1887 MIPS_SYS(sys_getpriority , 2)
1888 MIPS_SYS(sys_setpriority , 3)
1889 MIPS_SYS(sys_ni_syscall , 0)
1890 MIPS_SYS(sys_statfs , 2)
1891 MIPS_SYS(sys_fstatfs , 2) /* 4100 */
1892 MIPS_SYS(sys_ni_syscall , 0) /* was ioperm(2) */
1893 MIPS_SYS(sys_socketcall , 2)
1894 MIPS_SYS(sys_syslog , 3)
1895 MIPS_SYS(sys_setitimer , 3)
1896 MIPS_SYS(sys_getitimer , 2) /* 4105 */
1897 MIPS_SYS(sys_newstat , 2)
1898 MIPS_SYS(sys_newlstat , 2)
1899 MIPS_SYS(sys_newfstat , 2)
1900 MIPS_SYS(sys_uname , 1)
1901 MIPS_SYS(sys_ni_syscall , 0) /* 4110 was iopl(2) */
1902 MIPS_SYS(sys_vhangup , 0)
1903 MIPS_SYS(sys_ni_syscall , 0) /* was sys_idle() */
1904 MIPS_SYS(sys_ni_syscall , 0) /* was sys_vm86 */
1905 MIPS_SYS(sys_wait4 , 4)
1906 MIPS_SYS(sys_swapoff , 1) /* 4115 */
1907 MIPS_SYS(sys_sysinfo , 1)
1908 MIPS_SYS(sys_ipc , 6)
1909 MIPS_SYS(sys_fsync , 1)
1910 MIPS_SYS(sys_sigreturn , 0)
1911 MIPS_SYS(sys_clone , 6) /* 4120 */
1912 MIPS_SYS(sys_setdomainname, 2)
1913 MIPS_SYS(sys_newuname , 1)
1914 MIPS_SYS(sys_ni_syscall , 0) /* sys_modify_ldt */
1915 MIPS_SYS(sys_adjtimex , 1)
1916 MIPS_SYS(sys_mprotect , 3) /* 4125 */
1917 MIPS_SYS(sys_sigprocmask , 3)
1918 MIPS_SYS(sys_ni_syscall , 0) /* was create_module */
1919 MIPS_SYS(sys_init_module , 5)
1920 MIPS_SYS(sys_delete_module, 1)
1921 MIPS_SYS(sys_ni_syscall , 0) /* 4130 was get_kernel_syms */
1922 MIPS_SYS(sys_quotactl , 0)
1923 MIPS_SYS(sys_getpgid , 1)
1924 MIPS_SYS(sys_fchdir , 1)
1925 MIPS_SYS(sys_bdflush , 2)
1926 MIPS_SYS(sys_sysfs , 3) /* 4135 */
1927 MIPS_SYS(sys_personality , 1)
1928 MIPS_SYS(sys_ni_syscall , 0) /* for afs_syscall */
1929 MIPS_SYS(sys_setfsuid , 1)
1930 MIPS_SYS(sys_setfsgid , 1)
1931 MIPS_SYS(sys_llseek , 5) /* 4140 */
1932 MIPS_SYS(sys_getdents , 3)
1933 MIPS_SYS(sys_select , 5)
1934 MIPS_SYS(sys_flock , 2)
1935 MIPS_SYS(sys_msync , 3)
1936 MIPS_SYS(sys_readv , 3) /* 4145 */
1937 MIPS_SYS(sys_writev , 3)
1938 MIPS_SYS(sys_cacheflush , 3)
1939 MIPS_SYS(sys_cachectl , 3)
1940 MIPS_SYS(sys_sysmips , 4)
1941 MIPS_SYS(sys_ni_syscall , 0) /* 4150 */
1942 MIPS_SYS(sys_getsid , 1)
1943 MIPS_SYS(sys_fdatasync , 0)
1944 MIPS_SYS(sys_sysctl , 1)
1945 MIPS_SYS(sys_mlock , 2)
1946 MIPS_SYS(sys_munlock , 2) /* 4155 */
1947 MIPS_SYS(sys_mlockall , 1)
1948 MIPS_SYS(sys_munlockall , 0)
1949 MIPS_SYS(sys_sched_setparam, 2)
1950 MIPS_SYS(sys_sched_getparam, 2)
1951 MIPS_SYS(sys_sched_setscheduler, 3) /* 4160 */
1952 MIPS_SYS(sys_sched_getscheduler, 1)
1953 MIPS_SYS(sys_sched_yield , 0)
1954 MIPS_SYS(sys_sched_get_priority_max, 1)
1955 MIPS_SYS(sys_sched_get_priority_min, 1)
1956 MIPS_SYS(sys_sched_rr_get_interval, 2) /* 4165 */
1957 MIPS_SYS(sys_nanosleep, 2)
1958 MIPS_SYS(sys_mremap , 4)
1959 MIPS_SYS(sys_accept , 3)
1960 MIPS_SYS(sys_bind , 3)
1961 MIPS_SYS(sys_connect , 3) /* 4170 */
1962 MIPS_SYS(sys_getpeername , 3)
1963 MIPS_SYS(sys_getsockname , 3)
1964 MIPS_SYS(sys_getsockopt , 5)
1965 MIPS_SYS(sys_listen , 2)
1966 MIPS_SYS(sys_recv , 4) /* 4175 */
1967 MIPS_SYS(sys_recvfrom , 6)
1968 MIPS_SYS(sys_recvmsg , 3)
1969 MIPS_SYS(sys_send , 4)
1970 MIPS_SYS(sys_sendmsg , 3)
1971 MIPS_SYS(sys_sendto , 6) /* 4180 */
1972 MIPS_SYS(sys_setsockopt , 5)
1973 MIPS_SYS(sys_shutdown , 2)
1974 MIPS_SYS(sys_socket , 3)
1975 MIPS_SYS(sys_socketpair , 4)
1976 MIPS_SYS(sys_setresuid , 3) /* 4185 */
1977 MIPS_SYS(sys_getresuid , 3)
1978 MIPS_SYS(sys_ni_syscall , 0) /* was sys_query_module */
1979 MIPS_SYS(sys_poll , 3)
1980 MIPS_SYS(sys_nfsservctl , 3)
1981 MIPS_SYS(sys_setresgid , 3) /* 4190 */
1982 MIPS_SYS(sys_getresgid , 3)
1983 MIPS_SYS(sys_prctl , 5)
1984 MIPS_SYS(sys_rt_sigreturn, 0)
1985 MIPS_SYS(sys_rt_sigaction, 4)
1986 MIPS_SYS(sys_rt_sigprocmask, 4) /* 4195 */
1987 MIPS_SYS(sys_rt_sigpending, 2)
1988 MIPS_SYS(sys_rt_sigtimedwait, 4)
1989 MIPS_SYS(sys_rt_sigqueueinfo, 3)
1990 MIPS_SYS(sys_rt_sigsuspend, 0)
1991 MIPS_SYS(sys_pread64 , 6) /* 4200 */
1992 MIPS_SYS(sys_pwrite64 , 6)
1993 MIPS_SYS(sys_chown , 3)
1994 MIPS_SYS(sys_getcwd , 2)
1995 MIPS_SYS(sys_capget , 2)
1996 MIPS_SYS(sys_capset , 2) /* 4205 */
1997 MIPS_SYS(sys_sigaltstack , 2)
1998 MIPS_SYS(sys_sendfile , 4)
1999 MIPS_SYS(sys_ni_syscall , 0)
2000 MIPS_SYS(sys_ni_syscall , 0)
2001 MIPS_SYS(sys_mmap2 , 6) /* 4210 */
2002 MIPS_SYS(sys_truncate64 , 4)
2003 MIPS_SYS(sys_ftruncate64 , 4)
2004 MIPS_SYS(sys_stat64 , 2)
2005 MIPS_SYS(sys_lstat64 , 2)
2006 MIPS_SYS(sys_fstat64 , 2) /* 4215 */
2007 MIPS_SYS(sys_pivot_root , 2)
2008 MIPS_SYS(sys_mincore , 3)
2009 MIPS_SYS(sys_madvise , 3)
2010 MIPS_SYS(sys_getdents64 , 3)
2011 MIPS_SYS(sys_fcntl64 , 3) /* 4220 */
2012 MIPS_SYS(sys_ni_syscall , 0)
2013 MIPS_SYS(sys_gettid , 0)
2014 MIPS_SYS(sys_readahead , 5)
2015 MIPS_SYS(sys_setxattr , 5)
2016 MIPS_SYS(sys_lsetxattr , 5) /* 4225 */
2017 MIPS_SYS(sys_fsetxattr , 5)
2018 MIPS_SYS(sys_getxattr , 4)
2019 MIPS_SYS(sys_lgetxattr , 4)
2020 MIPS_SYS(sys_fgetxattr , 4)
2021 MIPS_SYS(sys_listxattr , 3) /* 4230 */
2022 MIPS_SYS(sys_llistxattr , 3)
2023 MIPS_SYS(sys_flistxattr , 3)
2024 MIPS_SYS(sys_removexattr , 2)
2025 MIPS_SYS(sys_lremovexattr, 2)
2026 MIPS_SYS(sys_fremovexattr, 2) /* 4235 */
2027 MIPS_SYS(sys_tkill , 2)
2028 MIPS_SYS(sys_sendfile64 , 5)
2029 MIPS_SYS(sys_futex , 2)
2030 MIPS_SYS(sys_sched_setaffinity, 3)
2031 MIPS_SYS(sys_sched_getaffinity, 3) /* 4240 */
2032 MIPS_SYS(sys_io_setup , 2)
2033 MIPS_SYS(sys_io_destroy , 1)
2034 MIPS_SYS(sys_io_getevents, 5)
2035 MIPS_SYS(sys_io_submit , 3)
2036 MIPS_SYS(sys_io_cancel , 3) /* 4245 */
2037 MIPS_SYS(sys_exit_group , 1)
2038 MIPS_SYS(sys_lookup_dcookie, 3)
2039 MIPS_SYS(sys_epoll_create, 1)
2040 MIPS_SYS(sys_epoll_ctl , 4)
2041 MIPS_SYS(sys_epoll_wait , 3) /* 4250 */
2042 MIPS_SYS(sys_remap_file_pages, 5)
2043 MIPS_SYS(sys_set_tid_address, 1)
2044 MIPS_SYS(sys_restart_syscall, 0)
2045 MIPS_SYS(sys_fadvise64_64, 7)
2046 MIPS_SYS(sys_statfs64 , 3) /* 4255 */
2047 MIPS_SYS(sys_fstatfs64 , 2)
2048 MIPS_SYS(sys_timer_create, 3)
2049 MIPS_SYS(sys_timer_settime, 4)
2050 MIPS_SYS(sys_timer_gettime, 2)
2051 MIPS_SYS(sys_timer_getoverrun, 1) /* 4260 */
2052 MIPS_SYS(sys_timer_delete, 1)
2053 MIPS_SYS(sys_clock_settime, 2)
2054 MIPS_SYS(sys_clock_gettime, 2)
2055 MIPS_SYS(sys_clock_getres, 2)
2056 MIPS_SYS(sys_clock_nanosleep, 4) /* 4265 */
2057 MIPS_SYS(sys_tgkill , 3)
2058 MIPS_SYS(sys_utimes , 2)
2059 MIPS_SYS(sys_mbind , 4)
2060 MIPS_SYS(sys_ni_syscall , 0) /* sys_get_mempolicy */
2061 MIPS_SYS(sys_ni_syscall , 0) /* 4270 sys_set_mempolicy */
2062 MIPS_SYS(sys_mq_open , 4)
2063 MIPS_SYS(sys_mq_unlink , 1)
2064 MIPS_SYS(sys_mq_timedsend, 5)
2065 MIPS_SYS(sys_mq_timedreceive, 5)
2066 MIPS_SYS(sys_mq_notify , 2) /* 4275 */
2067 MIPS_SYS(sys_mq_getsetattr, 3)
2068 MIPS_SYS(sys_ni_syscall , 0) /* sys_vserver */
2069 MIPS_SYS(sys_waitid , 4)
2070 MIPS_SYS(sys_ni_syscall , 0) /* available, was setaltroot */
2071 MIPS_SYS(sys_add_key , 5)
2072 MIPS_SYS(sys_request_key, 4)
2073 MIPS_SYS(sys_keyctl , 5)
2074 MIPS_SYS(sys_set_thread_area, 1)
2075 MIPS_SYS(sys_inotify_init, 0)
2076 MIPS_SYS(sys_inotify_add_watch, 3) /* 4285 */
2077 MIPS_SYS(sys_inotify_rm_watch, 2)
2078 MIPS_SYS(sys_migrate_pages, 4)
2079 MIPS_SYS(sys_openat, 4)
2080 MIPS_SYS(sys_mkdirat, 3)
2081 MIPS_SYS(sys_mknodat, 4) /* 4290 */
2082 MIPS_SYS(sys_fchownat, 5)
2083 MIPS_SYS(sys_futimesat, 3)
2084 MIPS_SYS(sys_fstatat64, 4)
2085 MIPS_SYS(sys_unlinkat, 3)
2086 MIPS_SYS(sys_renameat, 4) /* 4295 */
2087 MIPS_SYS(sys_linkat, 5)
2088 MIPS_SYS(sys_symlinkat, 3)
2089 MIPS_SYS(sys_readlinkat, 4)
2090 MIPS_SYS(sys_fchmodat, 3)
2091 MIPS_SYS(sys_faccessat, 3) /* 4300 */
2092 MIPS_SYS(sys_pselect6, 6)
2093 MIPS_SYS(sys_ppoll, 5)
2094 MIPS_SYS(sys_unshare, 1)
2095 MIPS_SYS(sys_splice, 4)
2096 MIPS_SYS(sys_sync_file_range, 7) /* 4305 */
2097 MIPS_SYS(sys_tee, 4)
2098 MIPS_SYS(sys_vmsplice, 4)
2099 MIPS_SYS(sys_move_pages, 6)
2100 MIPS_SYS(sys_set_robust_list, 2)
2101 MIPS_SYS(sys_get_robust_list, 3) /* 4310 */
2102 MIPS_SYS(sys_kexec_load, 4)
2103 MIPS_SYS(sys_getcpu, 3)
2104 MIPS_SYS(sys_epoll_pwait, 6)
2105 MIPS_SYS(sys_ioprio_set, 3)
2106 MIPS_SYS(sys_ioprio_get, 2)
2107 MIPS_SYS(sys_utimensat, 4)
2108 MIPS_SYS(sys_signalfd, 3)
2109 MIPS_SYS(sys_ni_syscall, 0) /* was timerfd */
2110 MIPS_SYS(sys_eventfd, 1)
2111 MIPS_SYS(sys_fallocate, 6) /* 4320 */
2112 MIPS_SYS(sys_timerfd_create, 2)
2113 MIPS_SYS(sys_timerfd_gettime, 2)
2114 MIPS_SYS(sys_timerfd_settime, 4)
2115 MIPS_SYS(sys_signalfd4, 4)
2116 MIPS_SYS(sys_eventfd2, 2) /* 4325 */
2117 MIPS_SYS(sys_epoll_create1, 1)
2118 MIPS_SYS(sys_dup3, 3)
2119 MIPS_SYS(sys_pipe2, 2)
2120 MIPS_SYS(sys_inotify_init1, 1)
2121 MIPS_SYS(sys_preadv, 6) /* 4330 */
2122 MIPS_SYS(sys_pwritev, 6)
2123 MIPS_SYS(sys_rt_tgsigqueueinfo, 4)
2124 MIPS_SYS(sys_perf_event_open, 5)
2125 MIPS_SYS(sys_accept4, 4)
2126 MIPS_SYS(sys_recvmmsg, 5) /* 4335 */
2127 MIPS_SYS(sys_fanotify_init, 2)
2128 MIPS_SYS(sys_fanotify_mark, 6)
2129 MIPS_SYS(sys_prlimit64, 4)
2130 MIPS_SYS(sys_name_to_handle_at, 5)
2131 MIPS_SYS(sys_open_by_handle_at, 3) /* 4340 */
2132 MIPS_SYS(sys_clock_adjtime, 2)
2133 MIPS_SYS(sys_syncfs, 1)
2134 };
2135
2136 #undef MIPS_SYS
2137
2138 static int do_store_exclusive(CPUMIPSState *env)
2139 {
2140 target_ulong addr;
2141 target_ulong page_addr;
2142 target_ulong val;
2143 int flags;
2144 int segv = 0;
2145 int reg;
2146 int d;
2147
2148 addr = env->lladdr;
2149 page_addr = addr & TARGET_PAGE_MASK;
2150 start_exclusive();
2151 mmap_lock();
2152 flags = page_get_flags(page_addr);
2153 if ((flags & PAGE_READ) == 0) {
2154 segv = 1;
2155 } else {
2156 reg = env->llreg & 0x1f;
2157 d = (env->llreg & 0x20) != 0;
2158 if (d) {
2159 segv = get_user_s64(val, addr);
2160 } else {
2161 segv = get_user_s32(val, addr);
2162 }
2163 if (!segv) {
2164 if (val != env->llval) {
2165 env->active_tc.gpr[reg] = 0;
2166 } else {
2167 if (d) {
2168 segv = put_user_u64(env->llnewval, addr);
2169 } else {
2170 segv = put_user_u32(env->llnewval, addr);
2171 }
2172 if (!segv) {
2173 env->active_tc.gpr[reg] = 1;
2174 }
2175 }
2176 }
2177 }
2178 env->lladdr = -1;
2179 if (!segv) {
2180 env->active_tc.PC += 4;
2181 }
2182 mmap_unlock();
2183 end_exclusive();
2184 return segv;
2185 }
2186
2187 void cpu_loop(CPUMIPSState *env)
2188 {
2189 target_siginfo_t info;
2190 int trapnr, ret;
2191 unsigned int syscall_num;
2192
2193 for(;;) {
2194 cpu_exec_start(env);
2195 trapnr = cpu_mips_exec(env);
2196 cpu_exec_end(env);
2197 switch(trapnr) {
2198 case EXCP_SYSCALL:
2199 syscall_num = env->active_tc.gpr[2] - 4000;
2200 env->active_tc.PC += 4;
2201 if (syscall_num >= sizeof(mips_syscall_args)) {
2202 ret = -TARGET_ENOSYS;
2203 } else {
2204 int nb_args;
2205 abi_ulong sp_reg;
2206 abi_ulong arg5 = 0, arg6 = 0, arg7 = 0, arg8 = 0;
2207
2208 nb_args = mips_syscall_args[syscall_num];
2209 sp_reg = env->active_tc.gpr[29];
2210 switch (nb_args) {
2211 /* these arguments are taken from the stack */
2212 case 8:
2213 if ((ret = get_user_ual(arg8, sp_reg + 28)) != 0) {
2214 goto done_syscall;
2215 }
2216 case 7:
2217 if ((ret = get_user_ual(arg7, sp_reg + 24)) != 0) {
2218 goto done_syscall;
2219 }
2220 case 6:
2221 if ((ret = get_user_ual(arg6, sp_reg + 20)) != 0) {
2222 goto done_syscall;
2223 }
2224 case 5:
2225 if ((ret = get_user_ual(arg5, sp_reg + 16)) != 0) {
2226 goto done_syscall;
2227 }
2228 default:
2229 break;
2230 }
2231 ret = do_syscall(env, env->active_tc.gpr[2],
2232 env->active_tc.gpr[4],
2233 env->active_tc.gpr[5],
2234 env->active_tc.gpr[6],
2235 env->active_tc.gpr[7],
2236 arg5, arg6, arg7, arg8);
2237 }
2238 done_syscall:
2239 if (ret == -TARGET_QEMU_ESIGRETURN) {
2240 /* Returning from a successful sigreturn syscall.
2241 Avoid clobbering register state. */
2242 break;
2243 }
2244 if ((unsigned int)ret >= (unsigned int)(-1133)) {
2245 env->active_tc.gpr[7] = 1; /* error flag */
2246 ret = -ret;
2247 } else {
2248 env->active_tc.gpr[7] = 0; /* error flag */
2249 }
2250 env->active_tc.gpr[2] = ret;
2251 break;
2252 case EXCP_TLBL:
2253 case EXCP_TLBS:
2254 case EXCP_AdEL:
2255 case EXCP_AdES:
2256 info.si_signo = TARGET_SIGSEGV;
2257 info.si_errno = 0;
2258 /* XXX: check env->error_code */
2259 info.si_code = TARGET_SEGV_MAPERR;
2260 info._sifields._sigfault._addr = env->CP0_BadVAddr;
2261 queue_signal(env, info.si_signo, &info);
2262 break;
2263 case EXCP_CpU:
2264 case EXCP_RI:
2265 info.si_signo = TARGET_SIGILL;
2266 info.si_errno = 0;
2267 info.si_code = 0;
2268 queue_signal(env, info.si_signo, &info);
2269 break;
2270 case EXCP_INTERRUPT:
2271 /* just indicate that signals should be handled asap */
2272 break;
2273 case EXCP_DEBUG:
2274 {
2275 int sig;
2276
2277 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2278 if (sig)
2279 {
2280 info.si_signo = sig;
2281 info.si_errno = 0;
2282 info.si_code = TARGET_TRAP_BRKPT;
2283 queue_signal(env, info.si_signo, &info);
2284 }
2285 }
2286 break;
2287 case EXCP_SC:
2288 if (do_store_exclusive(env)) {
2289 info.si_signo = TARGET_SIGSEGV;
2290 info.si_errno = 0;
2291 info.si_code = TARGET_SEGV_MAPERR;
2292 info._sifields._sigfault._addr = env->active_tc.PC;
2293 queue_signal(env, info.si_signo, &info);
2294 }
2295 break;
2296 default:
2297 // error:
2298 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
2299 trapnr);
2300 cpu_dump_state(env, stderr, fprintf, 0);
2301 abort();
2302 }
2303 process_pending_signals(env);
2304 }
2305 }
2306 #endif
2307
2308 #ifdef TARGET_SH4
2309 void cpu_loop(CPUSH4State *env)
2310 {
2311 int trapnr, ret;
2312 target_siginfo_t info;
2313
2314 while (1) {
2315 trapnr = cpu_sh4_exec (env);
2316
2317 switch (trapnr) {
2318 case 0x160:
2319 env->pc += 2;
2320 ret = do_syscall(env,
2321 env->gregs[3],
2322 env->gregs[4],
2323 env->gregs[5],
2324 env->gregs[6],
2325 env->gregs[7],
2326 env->gregs[0],
2327 env->gregs[1],
2328 0, 0);
2329 env->gregs[0] = ret;
2330 break;
2331 case EXCP_INTERRUPT:
2332 /* just indicate that signals should be handled asap */
2333 break;
2334 case EXCP_DEBUG:
2335 {
2336 int sig;
2337
2338 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2339 if (sig)
2340 {
2341 info.si_signo = sig;
2342 info.si_errno = 0;
2343 info.si_code = TARGET_TRAP_BRKPT;
2344 queue_signal(env, info.si_signo, &info);
2345 }
2346 }
2347 break;
2348 case 0xa0:
2349 case 0xc0:
2350 info.si_signo = SIGSEGV;
2351 info.si_errno = 0;
2352 info.si_code = TARGET_SEGV_MAPERR;
2353 info._sifields._sigfault._addr = env->tea;
2354 queue_signal(env, info.si_signo, &info);
2355 break;
2356
2357 default:
2358 printf ("Unhandled trap: 0x%x\n", trapnr);
2359 cpu_dump_state(env, stderr, fprintf, 0);
2360 exit (1);
2361 }
2362 process_pending_signals (env);
2363 }
2364 }
2365 #endif
2366
2367 #ifdef TARGET_CRIS
2368 void cpu_loop(CPUCRISState *env)
2369 {
2370 int trapnr, ret;
2371 target_siginfo_t info;
2372
2373 while (1) {
2374 trapnr = cpu_cris_exec (env);
2375 switch (trapnr) {
2376 case 0xaa:
2377 {
2378 info.si_signo = SIGSEGV;
2379 info.si_errno = 0;
2380 /* XXX: check env->error_code */
2381 info.si_code = TARGET_SEGV_MAPERR;
2382 info._sifields._sigfault._addr = env->pregs[PR_EDA];
2383 queue_signal(env, info.si_signo, &info);
2384 }
2385 break;
2386 case EXCP_INTERRUPT:
2387 /* just indicate that signals should be handled asap */
2388 break;
2389 case EXCP_BREAK:
2390 ret = do_syscall(env,
2391 env->regs[9],
2392 env->regs[10],
2393 env->regs[11],
2394 env->regs[12],
2395 env->regs[13],
2396 env->pregs[7],
2397 env->pregs[11],
2398 0, 0);
2399 env->regs[10] = ret;
2400 break;
2401 case EXCP_DEBUG:
2402 {
2403 int sig;
2404
2405 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2406 if (sig)
2407 {
2408 info.si_signo = sig;
2409 info.si_errno = 0;
2410 info.si_code = TARGET_TRAP_BRKPT;
2411 queue_signal(env, info.si_signo, &info);
2412 }
2413 }
2414 break;
2415 default:
2416 printf ("Unhandled trap: 0x%x\n", trapnr);
2417 cpu_dump_state(env, stderr, fprintf, 0);
2418 exit (1);
2419 }
2420 process_pending_signals (env);
2421 }
2422 }
2423 #endif
2424
2425 #ifdef TARGET_MICROBLAZE
2426 void cpu_loop(CPUMBState *env)
2427 {
2428 int trapnr, ret;
2429 target_siginfo_t info;
2430
2431 while (1) {
2432 trapnr = cpu_mb_exec (env);
2433 switch (trapnr) {
2434 case 0xaa:
2435 {
2436 info.si_signo = SIGSEGV;
2437 info.si_errno = 0;
2438 /* XXX: check env->error_code */
2439 info.si_code = TARGET_SEGV_MAPERR;
2440 info._sifields._sigfault._addr = 0;
2441 queue_signal(env, info.si_signo, &info);
2442 }
2443 break;
2444 case EXCP_INTERRUPT:
2445 /* just indicate that signals should be handled asap */
2446 break;
2447 case EXCP_BREAK:
2448 /* Return address is 4 bytes after the call. */
2449 env->regs[14] += 4;
2450 ret = do_syscall(env,
2451 env->regs[12],
2452 env->regs[5],
2453 env->regs[6],
2454 env->regs[7],
2455 env->regs[8],
2456 env->regs[9],
2457 env->regs[10],
2458 0, 0);
2459 env->regs[3] = ret;
2460 env->sregs[SR_PC] = env->regs[14];
2461 break;
2462 case EXCP_HW_EXCP:
2463 env->regs[17] = env->sregs[SR_PC] + 4;
2464 if (env->iflags & D_FLAG) {
2465 env->sregs[SR_ESR] |= 1 << 12;
2466 env->sregs[SR_PC] -= 4;
2467 /* FIXME: if branch was immed, replay the imm as well. */
2468 }
2469
2470 env->iflags &= ~(IMM_FLAG | D_FLAG);
2471
2472 switch (env->sregs[SR_ESR] & 31) {
2473 case ESR_EC_DIVZERO:
2474 info.si_signo = SIGFPE;
2475 info.si_errno = 0;
2476 info.si_code = TARGET_FPE_FLTDIV;
2477 info._sifields._sigfault._addr = 0;
2478 queue_signal(env, info.si_signo, &info);
2479 break;
2480 case ESR_EC_FPU:
2481 info.si_signo = SIGFPE;
2482 info.si_errno = 0;
2483 if (env->sregs[SR_FSR] & FSR_IO) {
2484 info.si_code = TARGET_FPE_FLTINV;
2485 }
2486 if (env->sregs[SR_FSR] & FSR_DZ) {
2487 info.si_code = TARGET_FPE_FLTDIV;
2488 }
2489 info._sifields._sigfault._addr = 0;
2490 queue_signal(env, info.si_signo, &info);
2491 break;
2492 default:
2493 printf ("Unhandled hw-exception: 0x%x\n",
2494 env->sregs[SR_ESR] & ESR_EC_MASK);
2495 cpu_dump_state(env, stderr, fprintf, 0);
2496 exit (1);
2497 break;
2498 }
2499 break;
2500 case EXCP_DEBUG:
2501 {
2502 int sig;
2503
2504 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2505 if (sig)
2506 {
2507 info.si_signo = sig;
2508 info.si_errno = 0;
2509 info.si_code = TARGET_TRAP_BRKPT;
2510 queue_signal(env, info.si_signo, &info);
2511 }
2512 }
2513 break;
2514 default:
2515 printf ("Unhandled trap: 0x%x\n", trapnr);
2516 cpu_dump_state(env, stderr, fprintf, 0);
2517 exit (1);
2518 }
2519 process_pending_signals (env);
2520 }
2521 }
2522 #endif
2523
2524 #ifdef TARGET_M68K
2525
2526 void cpu_loop(CPUM68KState *env)
2527 {
2528 int trapnr;
2529 unsigned int n;
2530 target_siginfo_t info;
2531 TaskState *ts = env->opaque;
2532
2533 for(;;) {
2534 trapnr = cpu_m68k_exec(env);
2535 switch(trapnr) {
2536 case EXCP_ILLEGAL:
2537 {
2538 if (ts->sim_syscalls) {
2539 uint16_t nr;
2540 nr = lduw(env->pc + 2);
2541 env->pc += 4;
2542 do_m68k_simcall(env, nr);
2543 } else {
2544 goto do_sigill;
2545 }
2546 }
2547 break;
2548 case EXCP_HALT_INSN:
2549 /* Semihosing syscall. */
2550 env->pc += 4;
2551 do_m68k_semihosting(env, env->dregs[0]);
2552 break;
2553 case EXCP_LINEA:
2554 case EXCP_LINEF:
2555 case EXCP_UNSUPPORTED:
2556 do_sigill:
2557 info.si_signo = SIGILL;
2558 info.si_errno = 0;
2559 info.si_code = TARGET_ILL_ILLOPN;
2560 info._sifields._sigfault._addr = env->pc;
2561 queue_signal(env, info.si_signo, &info);
2562 break;
2563 case EXCP_TRAP0:
2564 {
2565 ts->sim_syscalls = 0;
2566 n = env->dregs[0];
2567 env->pc += 2;
2568 env->dregs[0] = do_syscall(env,
2569 n,
2570 env->dregs[1],
2571 env->dregs[2],
2572 env->dregs[3],
2573 env->dregs[4],
2574 env->dregs[5],
2575 env->aregs[0],
2576 0, 0);
2577 }
2578 break;
2579 case EXCP_INTERRUPT:
2580 /* just indicate that signals should be handled asap */
2581 break;
2582 case EXCP_ACCESS:
2583 {
2584 info.si_signo = SIGSEGV;
2585 info.si_errno = 0;
2586 /* XXX: check env->error_code */
2587 info.si_code = TARGET_SEGV_MAPERR;
2588 info._sifields._sigfault._addr = env->mmu.ar;
2589 queue_signal(env, info.si_signo, &info);
2590 }
2591 break;
2592 case EXCP_DEBUG:
2593 {
2594 int sig;
2595
2596 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2597 if (sig)
2598 {
2599 info.si_signo = sig;
2600 info.si_errno = 0;
2601 info.si_code = TARGET_TRAP_BRKPT;
2602 queue_signal(env, info.si_signo, &info);
2603 }
2604 }
2605 break;
2606 default:
2607 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
2608 trapnr);
2609 cpu_dump_state(env, stderr, fprintf, 0);
2610 abort();
2611 }
2612 process_pending_signals(env);
2613 }
2614 }
2615 #endif /* TARGET_M68K */
2616
2617 #ifdef TARGET_ALPHA
2618 static void do_store_exclusive(CPUAlphaState *env, int reg, int quad)
2619 {
2620 target_ulong addr, val, tmp;
2621 target_siginfo_t info;
2622 int ret = 0;
2623
2624 addr = env->lock_addr;
2625 tmp = env->lock_st_addr;
2626 env->lock_addr = -1;
2627 env->lock_st_addr = 0;
2628
2629 start_exclusive();
2630 mmap_lock();
2631
2632 if (addr == tmp) {
2633 if (quad ? get_user_s64(val, addr) : get_user_s32(val, addr)) {
2634 goto do_sigsegv;
2635 }
2636
2637 if (val == env->lock_value) {
2638 tmp = env->ir[reg];
2639 if (quad ? put_user_u64(tmp, addr) : put_user_u32(tmp, addr)) {
2640 goto do_sigsegv;
2641 }
2642 ret = 1;
2643 }
2644 }
2645 env->ir[reg] = ret;
2646 env->pc += 4;
2647
2648 mmap_unlock();
2649 end_exclusive();
2650 return;
2651
2652 do_sigsegv:
2653 mmap_unlock();
2654 end_exclusive();
2655
2656 info.si_signo = TARGET_SIGSEGV;
2657 info.si_errno = 0;
2658 info.si_code = TARGET_SEGV_MAPERR;
2659 info._sifields._sigfault._addr = addr;
2660 queue_signal(env, TARGET_SIGSEGV, &info);
2661 }
2662
2663 void cpu_loop(CPUAlphaState *env)
2664 {
2665 int trapnr;
2666 target_siginfo_t info;
2667 abi_long sysret;
2668
2669 while (1) {
2670 trapnr = cpu_alpha_exec (env);
2671
2672 /* All of the traps imply a transition through PALcode, which
2673 implies an REI instruction has been executed. Which means
2674 that the intr_flag should be cleared. */
2675 env->intr_flag = 0;
2676
2677 switch (trapnr) {
2678 case EXCP_RESET:
2679 fprintf(stderr, "Reset requested. Exit\n");
2680 exit(1);
2681 break;
2682 case EXCP_MCHK:
2683 fprintf(stderr, "Machine check exception. Exit\n");
2684 exit(1);
2685 break;
2686 case EXCP_SMP_INTERRUPT:
2687 case EXCP_CLK_INTERRUPT:
2688 case EXCP_DEV_INTERRUPT:
2689 fprintf(stderr, "External interrupt. Exit\n");
2690 exit(1);
2691 break;
2692 case EXCP_MMFAULT:
2693 env->lock_addr = -1;
2694 info.si_signo = TARGET_SIGSEGV;
2695 info.si_errno = 0;
2696 info.si_code = (page_get_flags(env->trap_arg0) & PAGE_VALID
2697 ? TARGET_SEGV_ACCERR : TARGET_SEGV_MAPERR);
2698 info._sifields._sigfault._addr = env->trap_arg0;
2699 queue_signal(env, info.si_signo, &info);
2700 break;
2701 case EXCP_UNALIGN:
2702 env->lock_addr = -1;
2703 info.si_signo = TARGET_SIGBUS;
2704 info.si_errno = 0;
2705 info.si_code = TARGET_BUS_ADRALN;
2706 info._sifields._sigfault._addr = env->trap_arg0;
2707 queue_signal(env, info.si_signo, &info);
2708 break;
2709 case EXCP_OPCDEC:
2710 do_sigill:
2711 env->lock_addr = -1;
2712 info.si_signo = TARGET_SIGILL;
2713 info.si_errno = 0;
2714 info.si_code = TARGET_ILL_ILLOPC;
2715 info._sifields._sigfault._addr = env->pc;
2716 queue_signal(env, info.si_signo, &info);
2717 break;
2718 case EXCP_ARITH:
2719 env->lock_addr = -1;
2720 info.si_signo = TARGET_SIGFPE;
2721 info.si_errno = 0;
2722 info.si_code = TARGET_FPE_FLTINV;
2723 info._sifields._sigfault._addr = env->pc;
2724 queue_signal(env, info.si_signo, &info);
2725 break;
2726 case EXCP_FEN:
2727 /* No-op. Linux simply re-enables the FPU. */
2728 break;
2729 case EXCP_CALL_PAL:
2730 env->lock_addr = -1;
2731 switch (env->error_code) {
2732 case 0x80:
2733 /* BPT */
2734 info.si_signo = TARGET_SIGTRAP;
2735 info.si_errno = 0;
2736 info.si_code = TARGET_TRAP_BRKPT;
2737 info._sifields._sigfault._addr = env->pc;
2738 queue_signal(env, info.si_signo, &info);
2739 break;
2740 case 0x81:
2741 /* BUGCHK */
2742 info.si_signo = TARGET_SIGTRAP;
2743 info.si_errno = 0;
2744 info.si_code = 0;
2745 info._sifields._sigfault._addr = env->pc;
2746 queue_signal(env, info.si_signo, &info);
2747 break;
2748 case 0x83:
2749 /* CALLSYS */
2750 trapnr = env->ir[IR_V0];
2751 sysret = do_syscall(env, trapnr,
2752 env->ir[IR_A0], env->ir[IR_A1],
2753 env->ir[IR_A2], env->ir[IR_A3],
2754 env->ir[IR_A4], env->ir[IR_A5],
2755 0, 0);
2756 if (trapnr == TARGET_NR_sigreturn
2757 || trapnr == TARGET_NR_rt_sigreturn) {
2758 break;
2759 }
2760 /* Syscall writes 0 to V0 to bypass error check, similar
2761 to how this is handled internal to Linux kernel. */
2762 if (env->ir[IR_V0] == 0) {
2763 env->ir[IR_V0] = sysret;
2764 } else {
2765 env->ir[IR_V0] = (sysret < 0 ? -sysret : sysret);
2766 env->ir[IR_A3] = (sysret < 0);
2767 }
2768 break;
2769 case 0x86:
2770 /* IMB */
2771 /* ??? We can probably elide the code using page_unprotect
2772 that is checking for self-modifying code. Instead we
2773 could simply call tb_flush here. Until we work out the
2774 changes required to turn off the extra write protection,
2775 this can be a no-op. */
2776 break;
2777 case 0x9E:
2778 /* RDUNIQUE */
2779 /* Handled in the translator for usermode. */
2780 abort();
2781 case 0x9F:
2782 /* WRUNIQUE */
2783 /* Handled in the translator for usermode. */
2784 abort();
2785 case 0xAA:
2786 /* GENTRAP */
2787 info.si_signo = TARGET_SIGFPE;
2788 switch (env->ir[IR_A0]) {
2789 case TARGET_GEN_INTOVF:
2790 info.si_code = TARGET_FPE_INTOVF;
2791 break;
2792 case TARGET_GEN_INTDIV:
2793 info.si_code = TARGET_FPE_INTDIV;
2794 break;
2795 case TARGET_GEN_FLTOVF:
2796 info.si_code = TARGET_FPE_FLTOVF;
2797 break;
2798 case TARGET_GEN_FLTUND:
2799 info.si_code = TARGET_FPE_FLTUND;
2800 break;
2801 case TARGET_GEN_FLTINV:
2802 info.si_code = TARGET_FPE_FLTINV;
2803 break;
2804 case TARGET_GEN_FLTINE:
2805 info.si_code = TARGET_FPE_FLTRES;
2806 break;
2807 case TARGET_GEN_ROPRAND:
2808 info.si_code = 0;
2809 break;
2810 default:
2811 info.si_signo = TARGET_SIGTRAP;
2812 info.si_code = 0;
2813 break;
2814 }
2815 info.si_errno = 0;
2816 info._sifields._sigfault._addr = env->pc;
2817 queue_signal(env, info.si_signo, &info);
2818 break;
2819 default:
2820 goto do_sigill;
2821 }
2822 break;
2823 case EXCP_DEBUG:
2824 info.si_signo = gdb_handlesig (env, TARGET_SIGTRAP);
2825 if (info.si_signo) {
2826 env->lock_addr = -1;
2827 info.si_errno = 0;
2828 info.si_code = TARGET_TRAP_BRKPT;
2829 queue_signal(env, info.si_signo, &info);
2830 }
2831 break;
2832 case EXCP_STL_C:
2833 case EXCP_STQ_C:
2834 do_store_exclusive(env, env->error_code, trapnr - EXCP_STL_C);
2835 break;
2836 default:
2837 printf ("Unhandled trap: 0x%x\n", trapnr);
2838 cpu_dump_state(env, stderr, fprintf, 0);
2839 exit (1);
2840 }
2841 process_pending_signals (env);
2842 }
2843 }
2844 #endif /* TARGET_ALPHA */
2845
2846 #ifdef TARGET_S390X
2847 void cpu_loop(CPUS390XState *env)
2848 {
2849 int trapnr;
2850 target_siginfo_t info;
2851
2852 while (1) {
2853 trapnr = cpu_s390x_exec (env);
2854
2855 switch (trapnr) {
2856 case EXCP_INTERRUPT:
2857 /* just indicate that signals should be handled asap */
2858 break;
2859 case EXCP_DEBUG:
2860 {
2861 int sig;
2862
2863 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2864 if (sig) {
2865 info.si_signo = sig;
2866 info.si_errno = 0;
2867 info.si_code = TARGET_TRAP_BRKPT;
2868 queue_signal(env, info.si_signo, &info);
2869 }
2870 }
2871 break;
2872 case EXCP_SVC:
2873 {
2874 int n = env->int_svc_code;
2875 if (!n) {
2876 /* syscalls > 255 */
2877 n = env->regs[1];
2878 }
2879 env->psw.addr += env->int_svc_ilc;
2880 env->regs[2] = do_syscall(env, n,
2881 env->regs[2],
2882 env->regs[3],
2883 env->regs[4],
2884 env->regs[5],
2885 env->regs[6],
2886 env->regs[7],
2887 0, 0);
2888 }
2889 break;
2890 case EXCP_ADDR:
2891 {
2892 info.si_signo = SIGSEGV;
2893 info.si_errno = 0;
2894 /* XXX: check env->error_code */
2895 info.si_code = TARGET_SEGV_MAPERR;
2896 info._sifields._sigfault._addr = env->__excp_addr;
2897 queue_signal(env, info.si_signo, &info);
2898 }
2899 break;
2900 case EXCP_SPEC:
2901 {
2902 fprintf(stderr,"specification exception insn 0x%08x%04x\n", ldl(env->psw.addr), lduw(env->psw.addr + 4));
2903 info.si_signo = SIGILL;
2904 info.si_errno = 0;
2905 info.si_code = TARGET_ILL_ILLOPC;
2906 info._sifields._sigfault._addr = env->__excp_addr;
2907 queue_signal(env, info.si_signo, &info);
2908 }
2909 break;
2910 default:
2911 printf ("Unhandled trap: 0x%x\n", trapnr);
2912 cpu_dump_state(env, stderr, fprintf, 0);
2913 exit (1);
2914 }
2915 process_pending_signals (env);
2916 }
2917 }
2918
2919 #endif /* TARGET_S390X */
2920
2921 THREAD CPUArchState *thread_env;
2922
2923 void task_settid(TaskState *ts)
2924 {
2925 if (ts->ts_tid == 0) {
2926 #ifdef CONFIG_USE_NPTL
2927 ts->ts_tid = (pid_t)syscall(SYS_gettid);
2928 #else
2929 /* when no threads are used, tid becomes pid */
2930 ts->ts_tid = getpid();
2931 #endif
2932 }
2933 }
2934
2935 void stop_all_tasks(void)
2936 {
2937 /*
2938 * We trust that when using NPTL, start_exclusive()
2939 * handles thread stopping correctly.
2940 */
2941 start_exclusive();
2942 }
2943
2944 /* Assumes contents are already zeroed. */
2945 void init_task_state(TaskState *ts)
2946 {
2947 int i;
2948
2949 ts->used = 1;
2950 ts->first_free = ts->sigqueue_table;
2951 for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) {
2952 ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1];
2953 }
2954 ts->sigqueue_table[i].next = NULL;
2955 }
2956
2957 static void handle_arg_help(const char *arg)
2958 {
2959 usage();
2960 }
2961
2962 static void handle_arg_log(const char *arg)
2963 {
2964 int mask;
2965 const CPULogItem *item;
2966
2967 mask = cpu_str_to_log_mask(arg);
2968 if (!mask) {
2969 printf("Log items (comma separated):\n");
2970 for (item = cpu_log_items; item->mask != 0; item++) {
2971 printf("%-10s %s\n", item->name, item->help);
2972 }
2973 exit(1);
2974 }
2975 cpu_set_log(mask);
2976 }
2977
2978 static void handle_arg_log_filename(const char *arg)
2979 {
2980 cpu_set_log_filename(arg);
2981 }
2982
2983 static void handle_arg_set_env(const char *arg)
2984 {
2985 char *r, *p, *token;
2986 r = p = strdup(arg);
2987 while ((token = strsep(&p, ",")) != NULL) {
2988 if (envlist_setenv(envlist, token) != 0) {
2989 usage();
2990 }
2991 }
2992 free(r);
2993 }
2994
2995 static void handle_arg_unset_env(const char *arg)
2996 {
2997 char *r, *p, *token;
2998 r = p = strdup(arg);
2999 while ((token = strsep(&p, ",")) != NULL) {
3000 if (envlist_unsetenv(envlist, token) != 0) {
3001 usage();
3002 }
3003 }
3004 free(r);
3005 }
3006
3007 static void handle_arg_argv0(const char *arg)
3008 {
3009 argv0 = strdup(arg);
3010 }
3011
3012 static void handle_arg_stack_size(const char *arg)
3013 {
3014 char *p;
3015 guest_stack_size = strtoul(arg, &p, 0);
3016 if (guest_stack_size == 0) {
3017 usage();
3018 }
3019
3020 if (*p == 'M') {
3021 guest_stack_size *= 1024 * 1024;
3022 } else if (*p == 'k' || *p == 'K') {
3023 guest_stack_size *= 1024;
3024 }
3025 }
3026
3027 static void handle_arg_ld_prefix(const char *arg)
3028 {
3029 interp_prefix = strdup(arg);
3030 }
3031
3032 static void handle_arg_pagesize(const char *arg)
3033 {
3034 qemu_host_page_size = atoi(arg);
3035 if (qemu_host_page_size == 0 ||
3036 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
3037 fprintf(stderr, "page size must be a power of two\n");
3038 exit(1);
3039 }
3040 }
3041
3042 static void handle_arg_gdb(const char *arg)
3043 {
3044 gdbstub_port = atoi(arg);
3045 }
3046
3047 static void handle_arg_uname(const char *arg)
3048 {
3049 qemu_uname_release = strdup(arg);
3050 }
3051
3052 static void handle_arg_cpu(const char *arg)
3053 {
3054 cpu_model = strdup(arg);
3055 if (cpu_model == NULL || strcmp(cpu_model, "?") == 0) {
3056 /* XXX: implement xxx_cpu_list for targets that still miss it */
3057 #if defined(cpu_list_id)
3058 cpu_list_id(stdout, &fprintf, "");
3059 #elif defined(cpu_list)
3060 cpu_list(stdout, &fprintf); /* deprecated */
3061 #endif
3062 exit(1);
3063 }
3064 }
3065
3066 #if defined(CONFIG_USE_GUEST_BASE)
3067 static void handle_arg_guest_base(const char *arg)
3068 {
3069 guest_base = strtol(arg, NULL, 0);
3070 have_guest_base = 1;
3071 }
3072
3073 static void handle_arg_reserved_va(const char *arg)
3074 {
3075 char *p;
3076 int shift = 0;
3077 reserved_va = strtoul(arg, &p, 0);
3078 switch (*p) {
3079 case 'k':
3080 case 'K':
3081 shift = 10;
3082 break;
3083 case 'M':
3084 shift = 20;
3085 break;
3086 case 'G':
3087 shift = 30;
3088 break;
3089 }
3090 if (shift) {
3091 unsigned long unshifted = reserved_va;
3092 p++;
3093 reserved_va <<= shift;
3094 if (((reserved_va >> shift) != unshifted)
3095 #if HOST_LONG_BITS > TARGET_VIRT_ADDR_SPACE_BITS
3096 || (reserved_va > (1ul << TARGET_VIRT_ADDR_SPACE_BITS))
3097 #endif
3098 ) {
3099 fprintf(stderr, "Reserved virtual address too big\n");
3100 exit(1);
3101 }
3102 }
3103 if (*p) {
3104 fprintf(stderr, "Unrecognised -R size suffix '%s'\n", p);
3105 exit(1);
3106 }
3107 }
3108 #endif
3109
3110 static void handle_arg_singlestep(const char *arg)
3111 {
3112 singlestep = 1;
3113 }
3114
3115 static void handle_arg_strace(const char *arg)
3116 {
3117 do_strace = 1;
3118 }
3119
3120 static void handle_arg_version(const char *arg)
3121 {
3122 printf("qemu-" TARGET_ARCH " version " QEMU_VERSION QEMU_PKGVERSION
3123 ", Copyright (c) 2003-2008 Fabrice Bellard\n");
3124 exit(0);
3125 }
3126
3127 struct qemu_argument {
3128 const char *argv;
3129 const char *env;
3130 bool has_arg;
3131 void (*handle_opt)(const char *arg);
3132 const char *example;
3133 const char *help;
3134 };
3135
3136 struct qemu_argument arg_table[] = {
3137 {"h", "", false, handle_arg_help,
3138 "", "print this help"},
3139 {"g", "QEMU_GDB", true, handle_arg_gdb,
3140 "port", "wait gdb connection to 'port'"},
3141 {"L", "QEMU_LD_PREFIX", true, handle_arg_ld_prefix,
3142 "path", "set the elf interpreter prefix to 'path'"},
3143 {"s", "QEMU_STACK_SIZE", true, handle_arg_stack_size,
3144 "size", "set the stack size to 'size' bytes"},
3145 {"cpu", "QEMU_CPU", true, handle_arg_cpu,
3146 "model", "select CPU (-cpu ? for list)"},
3147 {"E", "QEMU_SET_ENV", true, handle_arg_set_env,
3148 "var=value", "sets targets environment variable (see below)"},
3149 {"U", "QEMU_UNSET_ENV", true, handle_arg_unset_env,
3150 "var", "unsets targets environment variable (see below)"},
3151 {"0", "QEMU_ARGV0", true, handle_arg_argv0,
3152 "argv0", "forces target process argv[0] to be 'argv0'"},
3153 {"r", "QEMU_UNAME", true, handle_arg_uname,
3154 "uname", "set qemu uname release string to 'uname'"},
3155 #if defined(CONFIG_USE_GUEST_BASE)
3156 {"B", "QEMU_GUEST_BASE", true, handle_arg_guest_base,
3157 "address", "set guest_base address to 'address'"},
3158 {"R", "QEMU_RESERVED_VA", true, handle_arg_reserved_va,
3159 "size", "reserve 'size' bytes for guest virtual address space"},
3160 #endif
3161 {"d", "QEMU_LOG", true, handle_arg_log,
3162 "options", "activate log"},
3163 {"D", "QEMU_LOG_FILENAME", true, handle_arg_log_filename,
3164 "logfile", "override default logfile location"},
3165 {"p", "QEMU_PAGESIZE", true, handle_arg_pagesize,
3166 "pagesize", "set the host page size to 'pagesize'"},
3167 {"singlestep", "QEMU_SINGLESTEP", false, handle_arg_singlestep,
3168 "", "run in singlestep mode"},
3169 {"strace", "QEMU_STRACE", false, handle_arg_strace,
3170 "", "log system calls"},
3171 {"version", "QEMU_VERSION", false, handle_arg_version,
3172 "", "display version information and exit"},
3173 {NULL, NULL, false, NULL, NULL, NULL}
3174 };
3175
3176 static void usage(void)
3177 {
3178 struct qemu_argument *arginfo;
3179 int maxarglen;
3180 int maxenvlen;
3181
3182 printf("usage: qemu-" TARGET_ARCH " [options] program [arguments...]\n"
3183 "Linux CPU emulator (compiled for " TARGET_ARCH " emulation)\n"
3184 "\n"
3185 "Options and associated environment variables:\n"
3186 "\n");
3187
3188 maxarglen = maxenvlen = 0;
3189
3190 for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
3191 if (strlen(arginfo->env) > maxenvlen) {
3192 maxenvlen = strlen(arginfo->env);
3193 }
3194 if (strlen(arginfo->argv) > maxarglen) {
3195 maxarglen = strlen(arginfo->argv);
3196 }
3197 }
3198
3199 printf("%-*s%-*sDescription\n", maxarglen+3, "Argument",
3200 maxenvlen+1, "Env-variable");
3201
3202 for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
3203 if (arginfo->has_arg) {
3204 printf("-%s %-*s %-*s %s\n", arginfo->argv,
3205 (int)(maxarglen-strlen(arginfo->argv)), arginfo->example,
3206 maxenvlen, arginfo->env, arginfo->help);
3207 } else {
3208 printf("-%-*s %-*s %s\n", maxarglen+1, arginfo->argv,
3209 maxenvlen, arginfo->env,
3210 arginfo->help);
3211 }
3212 }
3213
3214 printf("\n"
3215 "Defaults:\n"
3216 "QEMU_LD_PREFIX = %s\n"
3217 "QEMU_STACK_SIZE = %ld byte\n"
3218 "QEMU_LOG = %s\n",
3219 interp_prefix,
3220 guest_stack_size,
3221 DEBUG_LOGFILE);
3222
3223 printf("\n"
3224 "You can use -E and -U options or the QEMU_SET_ENV and\n"
3225 "QEMU_UNSET_ENV environment variables to set and unset\n"
3226 "environment variables for the target process.\n"
3227 "It is possible to provide several variables by separating them\n"
3228 "by commas in getsubopt(3) style. Additionally it is possible to\n"
3229 "provide the -E and -U options multiple times.\n"
3230 "The following lines are equivalent:\n"
3231 " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
3232 " -E var1=val2,var2=val2 -U LD_PRELOAD,LD_DEBUG\n"
3233 " QEMU_SET_ENV=var1=val2,var2=val2 QEMU_UNSET_ENV=LD_PRELOAD,LD_DEBUG\n"
3234 "Note that if you provide several changes to a single variable\n"
3235 "the last change will stay in effect.\n");
3236
3237 exit(1);
3238 }
3239
3240 static int parse_args(int argc, char **argv)
3241 {
3242 const char *r;
3243 int optind;
3244 struct qemu_argument *arginfo;
3245
3246 for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
3247 if (arginfo->env == NULL) {
3248 continue;
3249 }
3250
3251 r = getenv(arginfo->env);
3252 if (r != NULL) {
3253 arginfo->handle_opt(r);
3254 }
3255 }
3256
3257 optind = 1;
3258 for (;;) {
3259 if (optind >= argc) {
3260 break;
3261 }
3262 r = argv[optind];
3263 if (r[0] != '-') {
3264 break;
3265 }
3266 optind++;
3267 r++;
3268 if (!strcmp(r, "-")) {
3269 break;
3270 }
3271
3272 for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
3273 if (!strcmp(r, arginfo->argv)) {
3274 if (arginfo->has_arg) {
3275 if (optind >= argc) {
3276 usage();
3277 }
3278 arginfo->handle_opt(argv[optind]);
3279 optind++;
3280 } else {
3281 arginfo->handle_opt(NULL);
3282 }
3283 break;
3284 }
3285 }
3286
3287 /* no option matched the current argv */
3288 if (arginfo->handle_opt == NULL) {
3289 usage();
3290 }
3291 }
3292
3293 if (optind >= argc) {
3294 usage();
3295 }
3296
3297 filename = argv[optind];
3298 exec_path = argv[optind];
3299
3300 return optind;
3301 }
3302
3303 int main(int argc, char **argv, char **envp)
3304 {
3305 const char *log_file = DEBUG_LOGFILE;
3306 struct target_pt_regs regs1, *regs = &regs1;
3307 struct image_info info1, *info = &info1;
3308 struct linux_binprm bprm;
3309 TaskState *ts;
3310 CPUArchState *env;
3311 int optind;
3312 char **target_environ, **wrk;
3313 char **target_argv;
3314 int target_argc;
3315 int i;
3316 int ret;
3317
3318 module_call_init(MODULE_INIT_QOM);
3319
3320 qemu_cache_utils_init(envp);
3321
3322 if ((envlist = envlist_create()) == NULL) {
3323 (void) fprintf(stderr, "Unable to allocate envlist\n");
3324 exit(1);
3325 }
3326
3327 /* add current environment into the list */
3328 for (wrk = environ; *wrk != NULL; wrk++) {
3329 (void) envlist_setenv(envlist, *wrk);
3330 }
3331
3332 /* Read the stack limit from the kernel. If it's "unlimited",
3333 then we can do little else besides use the default. */
3334 {
3335 struct rlimit lim;
3336 if (getrlimit(RLIMIT_STACK, &lim) == 0
3337 && lim.rlim_cur != RLIM_INFINITY
3338 && lim.rlim_cur == (target_long)lim.rlim_cur) {
3339 guest_stack_size = lim.rlim_cur;
3340 }
3341 }
3342
3343 cpu_model = NULL;
3344 #if defined(cpudef_setup)
3345 cpudef_setup(); /* parse cpu definitions in target config file (TBD) */
3346 #endif
3347
3348 /* init debug */
3349 cpu_set_log_filename(log_file);
3350 optind = parse_args(argc, argv);
3351
3352 /* Zero out regs */
3353 memset(regs, 0, sizeof(struct target_pt_regs));
3354
3355 /* Zero out image_info */
3356 memset(info, 0, sizeof(struct image_info));
3357
3358 memset(&bprm, 0, sizeof (bprm));
3359
3360 /* Scan interp_prefix dir for replacement files. */
3361 init_paths(interp_prefix);
3362
3363 if (cpu_model == NULL) {
3364 #if defined(TARGET_I386)
3365 #ifdef TARGET_X86_64
3366 cpu_model = "qemu64";
3367 #else
3368 cpu_model = "qemu32";
3369 #endif
3370 #elif defined(TARGET_ARM)
3371 cpu_model = "any";
3372 #elif defined(TARGET_UNICORE32)
3373 cpu_model = "any";
3374 #elif defined(TARGET_M68K)
3375 cpu_model = "any";
3376 #elif defined(TARGET_SPARC)
3377 #ifdef TARGET_SPARC64
3378 cpu_model = "TI UltraSparc II";
3379 #else
3380 cpu_model = "Fujitsu MB86904";
3381 #endif
3382 #elif defined(TARGET_MIPS)
3383 #if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64)
3384 cpu_model = "20Kc";
3385 #else
3386 cpu_model = "24Kf";
3387 #endif
3388 #elif defined(TARGET_PPC)
3389 #ifdef TARGET_PPC64
3390 cpu_model = "970fx";
3391 #else
3392 cpu_model = "750";
3393 #endif
3394 #else
3395 cpu_model = "any";
3396 #endif
3397 }
3398 tcg_exec_init(0);
3399 cpu_exec_init_all();
3400 /* NOTE: we need to init the CPU at this stage to get
3401 qemu_host_page_size */
3402 env = cpu_init(cpu_model);
3403 if (!env) {
3404 fprintf(stderr, "Unable to find CPU definition\n");
3405 exit(1);
3406 }
3407 #if defined(TARGET_I386) || defined(TARGET_SPARC) || defined(TARGET_PPC)
3408 cpu_state_reset(env);
3409 #endif
3410
3411 thread_env = env;
3412
3413 if (getenv("QEMU_STRACE")) {
3414 do_strace = 1;
3415 }
3416
3417 target_environ = envlist_to_environ(envlist, NULL);
3418 envlist_free(envlist);
3419
3420 #if defined(CONFIG_USE_GUEST_BASE)
3421 /*
3422 * Now that page sizes are configured in cpu_init() we can do
3423 * proper page alignment for guest_base.
3424 */
3425 guest_base = HOST_PAGE_ALIGN(guest_base);
3426
3427 if (reserved_va) {
3428 void *p;
3429 int flags;
3430
3431 flags = MAP_ANONYMOUS | MAP_PRIVATE | MAP_NORESERVE;
3432 if (have_guest_base) {
3433 flags |= MAP_FIXED;
3434 }
3435 p = mmap((void *)guest_base, reserved_va, PROT_NONE, flags, -1, 0);
3436 if (p == MAP_FAILED) {
3437 fprintf(stderr, "Unable to reserve guest address space\n");
3438 exit(1);
3439 }
3440 guest_base = (unsigned long)p;
3441 /* Make sure the address is properly aligned. */
3442 if (guest_base & ~qemu_host_page_mask) {
3443 munmap(p, reserved_va);
3444 p = mmap((void *)guest_base, reserved_va + qemu_host_page_size,
3445 PROT_NONE, flags, -1, 0);
3446 if (p == MAP_FAILED) {
3447 fprintf(stderr, "Unable to reserve guest address space\n");
3448 exit(1);
3449 }
3450 guest_base = HOST_PAGE_ALIGN((unsigned long)p);
3451 }
3452 qemu_log("Reserved 0x%lx bytes of guest address space\n", reserved_va);
3453 mmap_next_start = reserved_va;
3454 }
3455
3456 if (reserved_va || have_guest_base) {
3457 if (!guest_validate_base(guest_base)) {
3458 fprintf(stderr, "Guest base/Reserved VA rejected by guest code\n");
3459 exit(1);
3460 }
3461 }
3462 #endif /* CONFIG_USE_GUEST_BASE */
3463
3464 /*
3465 * Read in mmap_min_addr kernel parameter. This value is used
3466 * When loading the ELF image to determine whether guest_base
3467 * is needed. It is also used in mmap_find_vma.
3468 */
3469 {
3470 FILE *fp;
3471
3472 if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) {
3473 unsigned long tmp;
3474 if (fscanf(fp, "%lu", &tmp) == 1) {
3475 mmap_min_addr = tmp;
3476 qemu_log("host mmap_min_addr=0x%lx\n", mmap_min_addr);
3477 }
3478 fclose(fp);
3479 }
3480 }
3481
3482 /*
3483 * Prepare copy of argv vector for target.
3484 */
3485 target_argc = argc - optind;
3486 target_argv = calloc(target_argc + 1, sizeof (char *));
3487 if (target_argv == NULL) {
3488 (void) fprintf(stderr, "Unable to allocate memory for target_argv\n");
3489 exit(1);
3490 }
3491
3492 /*
3493 * If argv0 is specified (using '-0' switch) we replace
3494 * argv[0] pointer with the given one.
3495 */
3496 i = 0;
3497 if (argv0 != NULL) {
3498 target_argv[i++] = strdup(argv0);
3499 }
3500 for (; i < target_argc; i++) {
3501 target_argv[i] = strdup(argv[optind + i]);
3502 }
3503 target_argv[target_argc] = NULL;
3504
3505 ts = g_malloc0 (sizeof(TaskState));
3506 init_task_state(ts);
3507 /* build Task State */
3508 ts->info = info;
3509 ts->bprm = &bprm;
3510 env->opaque = ts;
3511 task_settid(ts);
3512
3513 ret = loader_exec(filename, target_argv, target_environ, regs,
3514 info, &bprm);
3515 if (ret != 0) {
3516 printf("Error %d while loading %s\n", ret, filename);
3517 _exit(1);
3518 }
3519
3520 for (wrk = target_environ; *wrk; wrk++) {
3521 free(*wrk);
3522 }
3523
3524 free(target_environ);
3525
3526 if (qemu_log_enabled()) {
3527 #if defined(CONFIG_USE_GUEST_BASE)
3528 qemu_log("guest_base 0x%lx\n", guest_base);
3529 #endif
3530 log_page_dump();
3531
3532 qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
3533 qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code);
3534 qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n",
3535 info->start_code);
3536 qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n",
3537 info->start_data);
3538 qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data);
3539 qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n",
3540 info->start_stack);
3541 qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
3542 qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
3543 }
3544
3545 target_set_brk(info->brk);
3546 syscall_init();
3547 signal_init();
3548
3549 #if defined(CONFIG_USE_GUEST_BASE)
3550 /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay
3551 generating the prologue until now so that the prologue can take
3552 the real value of GUEST_BASE into account. */
3553 tcg_prologue_init(&tcg_ctx);
3554 #endif
3555
3556 #if defined(TARGET_I386)
3557 cpu_x86_set_cpl(env, 3);
3558
3559 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
3560 env->hflags |= HF_PE_MASK;
3561 if (env->cpuid_features & CPUID_SSE) {
3562 env->cr[4] |= CR4_OSFXSR_MASK;
3563 env->hflags |= HF_OSFXSR_MASK;
3564 }
3565 #ifndef TARGET_ABI32
3566 /* enable 64 bit mode if possible */
3567 if (!(env->cpuid_ext2_features & CPUID_EXT2_LM)) {
3568 fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
3569 exit(1);
3570 }
3571 env->cr[4] |= CR4_PAE_MASK;
3572 env->efer |= MSR_EFER_LMA | MSR_EFER_LME;
3573 env->hflags |= HF_LMA_MASK;
3574 #endif
3575
3576 /* flags setup : we activate the IRQs by default as in user mode */
3577 env->eflags |= IF_MASK;
3578
3579 /* linux register setup */
3580 #ifndef TARGET_ABI32
3581 env->regs[R_EAX] = regs->rax;
3582 env->regs[R_EBX] = regs->rbx;
3583 env->regs[R_ECX] = regs->rcx;
3584 env->regs[R_EDX] = regs->rdx;
3585 env->regs[R_ESI] = regs->rsi;
3586 env->regs[R_EDI] = regs->rdi;
3587 env->regs[R_EBP] = regs->rbp;
3588 env->regs[R_ESP] = regs->rsp;
3589 env->eip = regs->rip;
3590 #else
3591 env->regs[R_EAX] = regs->eax;
3592 env->regs[R_EBX] = regs->ebx;
3593 env->regs[R_ECX] = regs->ecx;
3594 env->regs[R_EDX] = regs->edx;
3595 env->regs[R_ESI] = regs->esi;
3596 env->regs[R_EDI] = regs->edi;
3597 env->regs[R_EBP] = regs->ebp;
3598 env->regs[R_ESP] = regs->esp;
3599 env->eip = regs->eip;
3600 #endif
3601
3602 /* linux interrupt setup */
3603 #ifndef TARGET_ABI32
3604 env->idt.limit = 511;
3605 #else
3606 env->idt.limit = 255;
3607 #endif
3608 env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1),
3609 PROT_READ|PROT_WRITE,
3610 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
3611 idt_table = g2h(env->idt.base);
3612 set_idt(0, 0);
3613 set_idt(1, 0);
3614 set_idt(2, 0);
3615 set_idt(3, 3);
3616 set_idt(4, 3);
3617 set_idt(5, 0);
3618 set_idt(6, 0);
3619 set_idt(7, 0);
3620 set_idt(8, 0);
3621 set_idt(9, 0);
3622 set_idt(10, 0);
3623 set_idt(11, 0);
3624 set_idt(12, 0);
3625 set_idt(13, 0);
3626 set_idt(14, 0);
3627 set_idt(15, 0);
3628 set_idt(16, 0);
3629 set_idt(17, 0);
3630 set_idt(18, 0);
3631 set_idt(19, 0);
3632 set_idt(0x80, 3);
3633
3634 /* linux segment setup */
3635 {
3636 uint64_t *gdt_table;
3637 env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES,
3638 PROT_READ|PROT_WRITE,
3639 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
3640 env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1;
3641 gdt_table = g2h(env->gdt.base);
3642 #ifdef TARGET_ABI32
3643 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
3644 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
3645 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
3646 #else
3647 /* 64 bit code segment */
3648 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
3649 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
3650 DESC_L_MASK |
3651 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
3652 #endif
3653 write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
3654 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
3655 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
3656 }
3657 cpu_x86_load_seg(env, R_CS, __USER_CS);
3658 cpu_x86_load_seg(env, R_SS, __USER_DS);
3659 #ifdef TARGET_ABI32
3660 cpu_x86_load_seg(env, R_DS, __USER_DS);
3661 cpu_x86_load_seg(env, R_ES, __USER_DS);
3662 cpu_x86_load_seg(env, R_FS, __USER_DS);
3663 cpu_x86_load_seg(env, R_GS, __USER_DS);
3664 /* This hack makes Wine work... */
3665 env->segs[R_FS].selector = 0;
3666 #else
3667 cpu_x86_load_seg(env, R_DS, 0);
3668 cpu_x86_load_seg(env, R_ES, 0);
3669 cpu_x86_load_seg(env, R_FS, 0);
3670 cpu_x86_load_seg(env, R_GS, 0);
3671 #endif
3672 #elif defined(TARGET_ARM)
3673 {
3674 int i;
3675 cpsr_write(env, regs->uregs[16], 0xffffffff);
3676 for(i = 0; i < 16; i++) {
3677 env->regs[i] = regs->uregs[i];
3678 }
3679 /* Enable BE8. */
3680 if (EF_ARM_EABI_VERSION(info->elf_flags) >= EF_ARM_EABI_VER4
3681 && (info->elf_flags & EF_ARM_BE8)) {
3682 env->bswap_code = 1;
3683 }
3684 }
3685 #elif defined(TARGET_UNICORE32)
3686 {
3687 int i;
3688 cpu_asr_write(env, regs->uregs[32], 0xffffffff);
3689 for (i = 0; i < 32; i++) {
3690 env->regs[i] = regs->uregs[i];
3691 }
3692 }
3693 #elif defined(TARGET_SPARC)
3694 {
3695 int i;
3696 env->pc = regs->pc;
3697 env->npc = regs->npc;
3698 env->y = regs->y;
3699 for(i = 0; i < 8; i++)
3700 env->gregs[i] = regs->u_regs[i];
3701 for(i = 0; i < 8; i++)
3702 env->regwptr[i] = regs->u_regs[i + 8];
3703 }
3704 #elif defined(TARGET_PPC)
3705 {
3706 int i;
3707
3708 #if defined(TARGET_PPC64)
3709 #if defined(TARGET_ABI32)
3710 env->msr &= ~((target_ulong)1 << MSR_SF);
3711 #else
3712 env->msr |= (target_ulong)1 << MSR_SF;
3713 #endif
3714 #endif
3715 env->nip = regs->nip;
3716 for(i = 0; i < 32; i++) {
3717 env->gpr[i] = regs->gpr[i];
3718 }
3719 }
3720 #elif defined(TARGET_M68K)
3721 {
3722 env->pc = regs->pc;
3723 env->dregs[0] = regs->d0;
3724 env->dregs[1] = regs->d1;
3725 env->dregs[2] = regs->d2;
3726 env->dregs[3] = regs->d3;
3727 env->dregs[4] = regs->d4;
3728 env->dregs[5] = regs->d5;
3729 env->dregs[6] = regs->d6;
3730 env->dregs[7] = regs->d7;
3731 env->aregs[0] = regs->a0;
3732 env->aregs[1] = regs->a1;
3733 env->aregs[2] = regs->a2;
3734 env->aregs[3] = regs->a3;
3735 env->aregs[4] = regs->a4;
3736 env->aregs[5] = regs->a5;
3737 env->aregs[6] = regs->a6;
3738 env->aregs[7] = regs->usp;
3739 env->sr = regs->sr;
3740 ts->sim_syscalls = 1;
3741 }
3742 #elif defined(TARGET_MICROBLAZE)
3743 {
3744 env->regs[0] = regs->r0;
3745 env->regs[1] = regs->r1;
3746 env->regs[2] = regs->r2;
3747 env->regs[3] = regs->r3;
3748 env->regs[4] = regs->r4;
3749 env->regs[5] = regs->r5;
3750 env->regs[6] = regs->r6;
3751 env->regs[7] = regs->r7;
3752 env->regs[8] = regs->r8;
3753 env->regs[9] = regs->r9;
3754 env->regs[10] = regs->r10;
3755 env->regs[11] = regs->r11;
3756 env->regs[12] = regs->r12;
3757 env->regs[13] = regs->r13;
3758 env->regs[14] = regs->r14;
3759 env->regs[15] = regs->r15;
3760 env->regs[16] = regs->r16;
3761 env->regs[17] = regs->r17;
3762 env->regs[18] = regs->r18;
3763 env->regs[19] = regs->r19;
3764 env->regs[20] = regs->r20;
3765 env->regs[21] = regs->r21;
3766 env->regs[22] = regs->r22;
3767 env->regs[23] = regs->r23;
3768 env->regs[24] = regs->r24;
3769 env->regs[25] = regs->r25;
3770 env->regs[26] = regs->r26;
3771 env->regs[27] = regs->r27;
3772 env->regs[28] = regs->r28;
3773 env->regs[29] = regs->r29;
3774 env->regs[30] = regs->r30;
3775 env->regs[31] = regs->r31;
3776 env->sregs[SR_PC] = regs->pc;
3777 }
3778 #elif defined(TARGET_MIPS)
3779 {
3780 int i;
3781
3782 for(i = 0; i < 32; i++) {
3783 env->active_tc.gpr[i] = regs->regs[i];
3784 }
3785 env->active_tc.PC = regs->cp0_epc & ~(target_ulong)1;
3786 if (regs->cp0_epc & 1) {
3787 env->hflags |= MIPS_HFLAG_M16;
3788 }
3789 }
3790 #elif defined(TARGET_SH4)
3791 {
3792 int i;
3793
3794 for(i = 0; i < 16; i++) {
3795 env->gregs[i] = regs->regs[i];
3796 }
3797 env->pc = regs->pc;
3798 }
3799 #elif defined(TARGET_ALPHA)
3800 {
3801 int i;
3802
3803 for(i = 0; i < 28; i++) {
3804 env->ir[i] = ((abi_ulong *)regs)[i];
3805 }
3806 env->ir[IR_SP] = regs->usp;
3807 env->pc = regs->pc;
3808 }
3809 #elif defined(TARGET_CRIS)
3810 {
3811 env->regs[0] = regs->r0;
3812 env->regs[1] = regs->r1;
3813 env->regs[2] = regs->r2;
3814 env->regs[3] = regs->r3;
3815 env->regs[4] = regs->r4;
3816 env->regs[5] = regs->r5;
3817 env->regs[6] = regs->r6;
3818 env->regs[7] = regs->r7;
3819 env->regs[8] = regs->r8;
3820 env->regs[9] = regs->r9;
3821 env->regs[10] = regs->r10;
3822 env->regs[11] = regs->r11;
3823 env->regs[12] = regs->r12;
3824 env->regs[13] = regs->r13;
3825 env->regs[14] = info->start_stack;
3826 env->regs[15] = regs->acr;
3827 env->pc = regs->erp;
3828 }
3829 #elif defined(TARGET_S390X)
3830 {
3831 int i;
3832 for (i = 0; i < 16; i++) {
3833 env->regs[i] = regs->gprs[i];
3834 }
3835 env->psw.mask = regs->psw.mask;
3836 env->psw.addr = regs->psw.addr;
3837 }
3838 #else
3839 #error unsupported target CPU
3840 #endif
3841
3842 #if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32)
3843 ts->stack_base = info->start_stack;
3844 ts->heap_base = info->brk;
3845 /* This will be filled in on the first SYS_HEAPINFO call. */
3846 ts->heap_limit = 0;
3847 #endif
3848
3849 if (gdbstub_port) {
3850 if (gdbserver_start(gdbstub_port) < 0) {
3851 fprintf(stderr, "qemu: could not open gdbserver on port %d\n",
3852 gdbstub_port);
3853 exit(1);
3854 }
3855 gdb_handlesig(env, 0);
3856 }
3857 cpu_loop(env);
3858 /* never exits */
3859 return 0;
3860 }
QEMU Monitor Protocol