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