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piix: symbolic constants
[qemu.git] / linux-user / main.c
blobd8bb8307efdd081323ee85491d81c561200ca0a9
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
28 #include "qemu.h"
29 #include "qemu-common.h"
30 #include "cache-utils.h"
31 /* For tb_lock */
32 #include "exec-all.h"
33
34
35 #include "envlist.h"
36
37 #define DEBUG_LOGFILE "/tmp/qemu.log"
38
39 char *exec_path;
40
41 int singlestep;
42 #if defined(CONFIG_USE_GUEST_BASE)
43 unsigned long mmap_min_addr;
44 unsigned long guest_base;
45 int have_guest_base;
46 #endif
47
48 static const char *interp_prefix = CONFIG_QEMU_PREFIX;
49 const char *qemu_uname_release = CONFIG_UNAME_RELEASE;
50
51 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
52 we allocate a bigger stack. Need a better solution, for example
53 by remapping the process stack directly at the right place */
54 unsigned long x86_stack_size = 512 * 1024;
55
56 void gemu_log(const char *fmt, ...)
57 {
58 va_list ap;
59
60 va_start(ap, fmt);
61 vfprintf(stderr, fmt, ap);
62 va_end(ap);
63 }
64
65 #if defined(TARGET_I386)
66 int cpu_get_pic_interrupt(CPUState *env)
67 {
68 return -1;
69 }
70 #endif
71
72 /* timers for rdtsc */
73
74 #if 0
75
76 static uint64_t emu_time;
77
78 int64_t cpu_get_real_ticks(void)
79 {
80 return emu_time++;
81 }
82
83 #endif
84
85 #if defined(CONFIG_USE_NPTL)
86 /***********************************************************/
87 /* Helper routines for implementing atomic operations. */
88
89 /* To implement exclusive operations we force all cpus to syncronise.
90 We don't require a full sync, only that no cpus are executing guest code.
91 The alternative is to map target atomic ops onto host equivalents,
92 which requires quite a lot of per host/target work. */
93 static pthread_mutex_t cpu_list_mutex = PTHREAD_MUTEX_INITIALIZER;
94 static pthread_mutex_t exclusive_lock = PTHREAD_MUTEX_INITIALIZER;
95 static pthread_cond_t exclusive_cond = PTHREAD_COND_INITIALIZER;
96 static pthread_cond_t exclusive_resume = PTHREAD_COND_INITIALIZER;
97 static int pending_cpus;
98
99 /* Make sure everything is in a consistent state for calling fork(). */
100 void fork_start(void)
101 {
102 pthread_mutex_lock(&tb_lock);
103 pthread_mutex_lock(&exclusive_lock);
104 mmap_fork_start();
105 }
106
107 void fork_end(int child)
108 {
109 mmap_fork_end(child);
110 if (child) {
111 /* Child processes created by fork() only have a single thread.
112 Discard information about the parent threads. */
113 first_cpu = thread_env;
114 thread_env->next_cpu = NULL;
115 pending_cpus = 0;
116 pthread_mutex_init(&exclusive_lock, NULL);
117 pthread_mutex_init(&cpu_list_mutex, NULL);
118 pthread_cond_init(&exclusive_cond, NULL);
119 pthread_cond_init(&exclusive_resume, NULL);
120 pthread_mutex_init(&tb_lock, NULL);
121 gdbserver_fork(thread_env);
122 } else {
123 pthread_mutex_unlock(&exclusive_lock);
124 pthread_mutex_unlock(&tb_lock);
125 }
126 }
127
128 /* Wait for pending exclusive operations to complete. The exclusive lock
129 must be held. */
130 static inline void exclusive_idle(void)
131 {
132 while (pending_cpus) {
133 pthread_cond_wait(&exclusive_resume, &exclusive_lock);
134 }
135 }
136
137 /* Start an exclusive operation.
138 Must only be called from outside cpu_arm_exec. */
139 static inline void start_exclusive(void)
140 {
141 CPUState *other;
142 pthread_mutex_lock(&exclusive_lock);
143 exclusive_idle();
144
145 pending_cpus = 1;
146 /* Make all other cpus stop executing. */
147 for (other = first_cpu; other; other = other->next_cpu) {
148 if (other->running) {
149 pending_cpus++;
150 cpu_exit(other);
151 }
152 }
153 if (pending_cpus > 1) {
154 pthread_cond_wait(&exclusive_cond, &exclusive_lock);
155 }
156 }
157
158 /* Finish an exclusive operation. */
159 static inline void end_exclusive(void)
160 {
161 pending_cpus = 0;
162 pthread_cond_broadcast(&exclusive_resume);
163 pthread_mutex_unlock(&exclusive_lock);
164 }
165
166 /* Wait for exclusive ops to finish, and begin cpu execution. */
167 static inline void cpu_exec_start(CPUState *env)
168 {
169 pthread_mutex_lock(&exclusive_lock);
170 exclusive_idle();
171 env->running = 1;
172 pthread_mutex_unlock(&exclusive_lock);
173 }
174
175 /* Mark cpu as not executing, and release pending exclusive ops. */
176 static inline void cpu_exec_end(CPUState *env)
177 {
178 pthread_mutex_lock(&exclusive_lock);
179 env->running = 0;
180 if (pending_cpus > 1) {
181 pending_cpus--;
182 if (pending_cpus == 1) {
183 pthread_cond_signal(&exclusive_cond);
184 }
185 }
186 exclusive_idle();
187 pthread_mutex_unlock(&exclusive_lock);
188 }
189
190 void cpu_list_lock(void)
191 {
192 pthread_mutex_lock(&cpu_list_mutex);
193 }
194
195 void cpu_list_unlock(void)
196 {
197 pthread_mutex_unlock(&cpu_list_mutex);
198 }
199 #else /* if !CONFIG_USE_NPTL */
200 /* These are no-ops because we are not threadsafe. */
201 static inline void cpu_exec_start(CPUState *env)
202 {
203 }
204
205 static inline void cpu_exec_end(CPUState *env)
206 {
207 }
208
209 static inline void start_exclusive(void)
210 {
211 }
212
213 static inline void end_exclusive(void)
214 {
215 }
216
217 void fork_start(void)
218 {
219 }
220
221 void fork_end(int child)
222 {
223 if (child) {
224 gdbserver_fork(thread_env);
225 }
226 }
227
228 void cpu_list_lock(void)
229 {
230 }
231
232 void cpu_list_unlock(void)
233 {
234 }
235 #endif
236
237
238 #ifdef TARGET_I386
239 /***********************************************************/
240 /* CPUX86 core interface */
241
242 void cpu_smm_update(CPUState *env)
243 {
244 }
245
246 uint64_t cpu_get_tsc(CPUX86State *env)
247 {
248 return cpu_get_real_ticks();
249 }
250
251 static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
252 int flags)
253 {
254 unsigned int e1, e2;
255 uint32_t *p;
256 e1 = (addr << 16) | (limit & 0xffff);
257 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
258 e2 |= flags;
259 p = ptr;
260 p[0] = tswap32(e1);
261 p[1] = tswap32(e2);
262 }
263
264 static uint64_t *idt_table;
265 #ifdef TARGET_X86_64
266 static void set_gate64(void *ptr, unsigned int type, unsigned int dpl,
267 uint64_t addr, unsigned int sel)
268 {
269 uint32_t *p, e1, e2;
270 e1 = (addr & 0xffff) | (sel << 16);
271 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
272 p = ptr;
273 p[0] = tswap32(e1);
274 p[1] = tswap32(e2);
275 p[2] = tswap32(addr >> 32);
276 p[3] = 0;
277 }
278 /* only dpl matters as we do only user space emulation */
279 static void set_idt(int n, unsigned int dpl)
280 {
281 set_gate64(idt_table + n * 2, 0, dpl, 0, 0);
282 }
283 #else
284 static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
285 uint32_t addr, unsigned int sel)
286 {
287 uint32_t *p, e1, e2;
288 e1 = (addr & 0xffff) | (sel << 16);
289 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
290 p = ptr;
291 p[0] = tswap32(e1);
292 p[1] = tswap32(e2);
293 }
294
295 /* only dpl matters as we do only user space emulation */
296 static void set_idt(int n, unsigned int dpl)
297 {
298 set_gate(idt_table + n, 0, dpl, 0, 0);
299 }
300 #endif
301
302 void cpu_loop(CPUX86State *env)
303 {
304 int trapnr;
305 abi_ulong pc;
306 target_siginfo_t info;
307
308 for(;;) {
309 trapnr = cpu_x86_exec(env);
310 switch(trapnr) {
311 case 0x80:
312 /* linux syscall from int $0x80 */
313 env->regs[R_EAX] = do_syscall(env,
314 env->regs[R_EAX],
315 env->regs[R_EBX],
316 env->regs[R_ECX],
317 env->regs[R_EDX],
318 env->regs[R_ESI],
319 env->regs[R_EDI],
320 env->regs[R_EBP]);
321 break;
322 #ifndef TARGET_ABI32
323 case EXCP_SYSCALL:
324 /* linux syscall from syscall intruction */
325 env->regs[R_EAX] = do_syscall(env,
326 env->regs[R_EAX],
327 env->regs[R_EDI],
328 env->regs[R_ESI],
329 env->regs[R_EDX],
330 env->regs[10],
331 env->regs[8],
332 env->regs[9]);
333 env->eip = env->exception_next_eip;
334 break;
335 #endif
336 case EXCP0B_NOSEG:
337 case EXCP0C_STACK:
338 info.si_signo = SIGBUS;
339 info.si_errno = 0;
340 info.si_code = TARGET_SI_KERNEL;
341 info._sifields._sigfault._addr = 0;
342 queue_signal(env, info.si_signo, &info);
343 break;
344 case EXCP0D_GPF:
345 /* XXX: potential problem if ABI32 */
346 #ifndef TARGET_X86_64
347 if (env->eflags & VM_MASK) {
348 handle_vm86_fault(env);
349 } else
350 #endif
351 {
352 info.si_signo = SIGSEGV;
353 info.si_errno = 0;
354 info.si_code = TARGET_SI_KERNEL;
355 info._sifields._sigfault._addr = 0;
356 queue_signal(env, info.si_signo, &info);
357 }
358 break;
359 case EXCP0E_PAGE:
360 info.si_signo = SIGSEGV;
361 info.si_errno = 0;
362 if (!(env->error_code & 1))
363 info.si_code = TARGET_SEGV_MAPERR;
364 else
365 info.si_code = TARGET_SEGV_ACCERR;
366 info._sifields._sigfault._addr = env->cr[2];
367 queue_signal(env, info.si_signo, &info);
368 break;
369 case EXCP00_DIVZ:
370 #ifndef TARGET_X86_64
371 if (env->eflags & VM_MASK) {
372 handle_vm86_trap(env, trapnr);
373 } else
374 #endif
375 {
376 /* division by zero */
377 info.si_signo = SIGFPE;
378 info.si_errno = 0;
379 info.si_code = TARGET_FPE_INTDIV;
380 info._sifields._sigfault._addr = env->eip;
381 queue_signal(env, info.si_signo, &info);
382 }
383 break;
384 case EXCP01_DB:
385 case EXCP03_INT3:
386 #ifndef TARGET_X86_64
387 if (env->eflags & VM_MASK) {
388 handle_vm86_trap(env, trapnr);
389 } else
390 #endif
391 {
392 info.si_signo = SIGTRAP;
393 info.si_errno = 0;
394 if (trapnr == EXCP01_DB) {
395 info.si_code = TARGET_TRAP_BRKPT;
396 info._sifields._sigfault._addr = env->eip;
397 } else {
398 info.si_code = TARGET_SI_KERNEL;
399 info._sifields._sigfault._addr = 0;
400 }
401 queue_signal(env, info.si_signo, &info);
402 }
403 break;
404 case EXCP04_INTO:
405 case EXCP05_BOUND:
406 #ifndef TARGET_X86_64
407 if (env->eflags & VM_MASK) {
408 handle_vm86_trap(env, trapnr);
409 } else
410 #endif
411 {
412 info.si_signo = SIGSEGV;
413 info.si_errno = 0;
414 info.si_code = TARGET_SI_KERNEL;
415 info._sifields._sigfault._addr = 0;
416 queue_signal(env, info.si_signo, &info);
417 }
418 break;
419 case EXCP06_ILLOP:
420 info.si_signo = SIGILL;
421 info.si_errno = 0;
422 info.si_code = TARGET_ILL_ILLOPN;
423 info._sifields._sigfault._addr = env->eip;
424 queue_signal(env, info.si_signo, &info);
425 break;
426 case EXCP_INTERRUPT:
427 /* just indicate that signals should be handled asap */
428 break;
429 case EXCP_DEBUG:
430 {
431 int sig;
432
433 sig = gdb_handlesig (env, TARGET_SIGTRAP);
434 if (sig)
435 {
436 info.si_signo = sig;
437 info.si_errno = 0;
438 info.si_code = TARGET_TRAP_BRKPT;
439 queue_signal(env, info.si_signo, &info);
440 }
441 }
442 break;
443 default:
444 pc = env->segs[R_CS].base + env->eip;
445 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
446 (long)pc, trapnr);
447 abort();
448 }
449 process_pending_signals(env);
450 }
451 }
452 #endif
453
454 #ifdef TARGET_ARM
455
456 static void arm_cache_flush(abi_ulong start, abi_ulong last)
457 {
458 abi_ulong addr, last1;
459
460 if (last < start)
461 return;
462 addr = start;
463 for(;;) {
464 last1 = ((addr + TARGET_PAGE_SIZE) & TARGET_PAGE_MASK) - 1;
465 if (last1 > last)
466 last1 = last;
467 tb_invalidate_page_range(addr, last1 + 1);
468 if (last1 == last)
469 break;
470 addr = last1 + 1;
471 }
472 }
473
474 /* Handle a jump to the kernel code page. */
475 static int
476 do_kernel_trap(CPUARMState *env)
477 {
478 uint32_t addr;
479 uint32_t cpsr;
480 uint32_t val;
481
482 switch (env->regs[15]) {
483 case 0xffff0fa0: /* __kernel_memory_barrier */
484 /* ??? No-op. Will need to do better for SMP. */
485 break;
486 case 0xffff0fc0: /* __kernel_cmpxchg */
487 /* XXX: This only works between threads, not between processes.
488 It's probably possible to implement this with native host
489 operations. However things like ldrex/strex are much harder so
490 there's not much point trying. */
491 start_exclusive();
492 cpsr = cpsr_read(env);
493 addr = env->regs[2];
494 /* FIXME: This should SEGV if the access fails. */
495 if (get_user_u32(val, addr))
496 val = ~env->regs[0];
497 if (val == env->regs[0]) {
498 val = env->regs[1];
499 /* FIXME: Check for segfaults. */
500 put_user_u32(val, addr);
501 env->regs[0] = 0;
502 cpsr |= CPSR_C;
503 } else {
504 env->regs[0] = -1;
505 cpsr &= ~CPSR_C;
506 }
507 cpsr_write(env, cpsr, CPSR_C);
508 end_exclusive();
509 break;
510 case 0xffff0fe0: /* __kernel_get_tls */
511 env->regs[0] = env->cp15.c13_tls2;
512 break;
513 default:
514 return 1;
515 }
516 /* Jump back to the caller. */
517 addr = env->regs[14];
518 if (addr & 1) {
519 env->thumb = 1;
520 addr &= ~1;
521 }
522 env->regs[15] = addr;
523
524 return 0;
525 }
526
527 static int do_strex(CPUARMState *env)
528 {
529 uint32_t val;
530 int size;
531 int rc = 1;
532 int segv = 0;
533 uint32_t addr;
534 start_exclusive();
535 addr = env->exclusive_addr;
536 if (addr != env->exclusive_test) {
537 goto fail;
538 }
539 size = env->exclusive_info & 0xf;
540 switch (size) {
541 case 0:
542 segv = get_user_u8(val, addr);
543 break;
544 case 1:
545 segv = get_user_u16(val, addr);
546 break;
547 case 2:
548 case 3:
549 segv = get_user_u32(val, addr);
550 break;
551 }
552 if (segv) {
553 env->cp15.c6_data = addr;
554 goto done;
555 }
556 if (val != env->exclusive_val) {
557 goto fail;
558 }
559 if (size == 3) {
560 segv = get_user_u32(val, addr + 4);
561 if (segv) {
562 env->cp15.c6_data = addr + 4;
563 goto done;
564 }
565 if (val != env->exclusive_high) {
566 goto fail;
567 }
568 }
569 val = env->regs[(env->exclusive_info >> 8) & 0xf];
570 switch (size) {
571 case 0:
572 segv = put_user_u8(val, addr);
573 break;
574 case 1:
575 segv = put_user_u16(val, addr);
576 break;
577 case 2:
578 case 3:
579 segv = put_user_u32(val, addr);
580 break;
581 }
582 if (segv) {
583 env->cp15.c6_data = addr;
584 goto done;
585 }
586 if (size == 3) {
587 val = env->regs[(env->exclusive_info >> 12) & 0xf];
588 segv = put_user_u32(val, addr);
589 if (segv) {
590 env->cp15.c6_data = addr + 4;
591 goto done;
592 }
593 }
594 rc = 0;
595 fail:
596 env->regs[15] += 4;
597 env->regs[(env->exclusive_info >> 4) & 0xf] = rc;
598 done:
599 end_exclusive();
600 return segv;
601 }
602
603 void cpu_loop(CPUARMState *env)
604 {
605 int trapnr;
606 unsigned int n, insn;
607 target_siginfo_t info;
608 uint32_t addr;
609
610 for(;;) {
611 cpu_exec_start(env);
612 trapnr = cpu_arm_exec(env);
613 cpu_exec_end(env);
614 switch(trapnr) {
615 case EXCP_UDEF:
616 {
617 TaskState *ts = env->opaque;
618 uint32_t opcode;
619 int rc;
620
621 /* we handle the FPU emulation here, as Linux */
622 /* we get the opcode */
623 /* FIXME - what to do if get_user() fails? */
624 get_user_u32(opcode, env->regs[15]);
625
626 rc = EmulateAll(opcode, &ts->fpa, env);
627 if (rc == 0) { /* illegal instruction */
628 info.si_signo = SIGILL;
629 info.si_errno = 0;
630 info.si_code = TARGET_ILL_ILLOPN;
631 info._sifields._sigfault._addr = env->regs[15];
632 queue_signal(env, info.si_signo, &info);
633 } else if (rc < 0) { /* FP exception */
634 int arm_fpe=0;
635
636 /* translate softfloat flags to FPSR flags */
637 if (-rc & float_flag_invalid)
638 arm_fpe |= BIT_IOC;
639 if (-rc & float_flag_divbyzero)
640 arm_fpe |= BIT_DZC;
641 if (-rc & float_flag_overflow)
642 arm_fpe |= BIT_OFC;
643 if (-rc & float_flag_underflow)
644 arm_fpe |= BIT_UFC;
645 if (-rc & float_flag_inexact)
646 arm_fpe |= BIT_IXC;
647
648 FPSR fpsr = ts->fpa.fpsr;
649 //printf("fpsr 0x%x, arm_fpe 0x%x\n",fpsr,arm_fpe);
650
651 if (fpsr & (arm_fpe << 16)) { /* exception enabled? */
652 info.si_signo = SIGFPE;
653 info.si_errno = 0;
654
655 /* ordered by priority, least first */
656 if (arm_fpe & BIT_IXC) info.si_code = TARGET_FPE_FLTRES;
657 if (arm_fpe & BIT_UFC) info.si_code = TARGET_FPE_FLTUND;
658 if (arm_fpe & BIT_OFC) info.si_code = TARGET_FPE_FLTOVF;
659 if (arm_fpe & BIT_DZC) info.si_code = TARGET_FPE_FLTDIV;
660 if (arm_fpe & BIT_IOC) info.si_code = TARGET_FPE_FLTINV;
661
662 info._sifields._sigfault._addr = env->regs[15];
663 queue_signal(env, info.si_signo, &info);
664 } else {
665 env->regs[15] += 4;
666 }
667
668 /* accumulate unenabled exceptions */
669 if ((!(fpsr & BIT_IXE)) && (arm_fpe & BIT_IXC))
670 fpsr |= BIT_IXC;
671 if ((!(fpsr & BIT_UFE)) && (arm_fpe & BIT_UFC))
672 fpsr |= BIT_UFC;
673 if ((!(fpsr & BIT_OFE)) && (arm_fpe & BIT_OFC))
674 fpsr |= BIT_OFC;
675 if ((!(fpsr & BIT_DZE)) && (arm_fpe & BIT_DZC))
676 fpsr |= BIT_DZC;
677 if ((!(fpsr & BIT_IOE)) && (arm_fpe & BIT_IOC))
678 fpsr |= BIT_IOC;
679 ts->fpa.fpsr=fpsr;
680 } else { /* everything OK */
681 /* increment PC */
682 env->regs[15] += 4;
683 }
684 }
685 break;
686 case EXCP_SWI:
687 case EXCP_BKPT:
688 {
689 env->eabi = 1;
690 /* system call */
691 if (trapnr == EXCP_BKPT) {
692 if (env->thumb) {
693 /* FIXME - what to do if get_user() fails? */
694 get_user_u16(insn, env->regs[15]);
695 n = insn & 0xff;
696 env->regs[15] += 2;
697 } else {
698 /* FIXME - what to do if get_user() fails? */
699 get_user_u32(insn, env->regs[15]);
700 n = (insn & 0xf) | ((insn >> 4) & 0xff0);
701 env->regs[15] += 4;
702 }
703 } else {
704 if (env->thumb) {
705 /* FIXME - what to do if get_user() fails? */
706 get_user_u16(insn, env->regs[15] - 2);
707 n = insn & 0xff;
708 } else {
709 /* FIXME - what to do if get_user() fails? */
710 get_user_u32(insn, env->regs[15] - 4);
711 n = insn & 0xffffff;
712 }
713 }
714
715 if (n == ARM_NR_cacheflush) {
716 arm_cache_flush(env->regs[0], env->regs[1]);
717 } else if (n == ARM_NR_semihosting
718 || n == ARM_NR_thumb_semihosting) {
719 env->regs[0] = do_arm_semihosting (env);
720 } else if (n == 0 || n >= ARM_SYSCALL_BASE
721 || (env->thumb && n == ARM_THUMB_SYSCALL)) {
722 /* linux syscall */
723 if (env->thumb || n == 0) {
724 n = env->regs[7];
725 } else {
726 n -= ARM_SYSCALL_BASE;
727 env->eabi = 0;
728 }
729 if ( n > ARM_NR_BASE) {
730 switch (n) {
731 case ARM_NR_cacheflush:
732 arm_cache_flush(env->regs[0], env->regs[1]);
733 break;
734 case ARM_NR_set_tls:
735 cpu_set_tls(env, env->regs[0]);
736 env->regs[0] = 0;
737 break;
738 default:
739 gemu_log("qemu: Unsupported ARM syscall: 0x%x\n",
740 n);
741 env->regs[0] = -TARGET_ENOSYS;
742 break;
743 }
744 } else {
745 env->regs[0] = do_syscall(env,
746 n,
747 env->regs[0],
748 env->regs[1],
749 env->regs[2],
750 env->regs[3],
751 env->regs[4],
752 env->regs[5]);
753 }
754 } else {
755 goto error;
756 }
757 }
758 break;
759 case EXCP_INTERRUPT:
760 /* just indicate that signals should be handled asap */
761 break;
762 case EXCP_PREFETCH_ABORT:
763 addr = env->cp15.c6_insn;
764 goto do_segv;
765 case EXCP_DATA_ABORT:
766 addr = env->cp15.c6_data;
767 goto do_segv;
768 do_segv:
769 {
770 info.si_signo = SIGSEGV;
771 info.si_errno = 0;
772 /* XXX: check env->error_code */
773 info.si_code = TARGET_SEGV_MAPERR;
774 info._sifields._sigfault._addr = addr;
775 queue_signal(env, info.si_signo, &info);
776 }
777 break;
778 case EXCP_DEBUG:
779 {
780 int sig;
781
782 sig = gdb_handlesig (env, TARGET_SIGTRAP);
783 if (sig)
784 {
785 info.si_signo = sig;
786 info.si_errno = 0;
787 info.si_code = TARGET_TRAP_BRKPT;
788 queue_signal(env, info.si_signo, &info);
789 }
790 }
791 break;
792 case EXCP_KERNEL_TRAP:
793 if (do_kernel_trap(env))
794 goto error;
795 break;
796 case EXCP_STREX:
797 if (do_strex(env)) {
798 addr = env->cp15.c6_data;
799 goto do_segv;
800 }
801 break;
802 default:
803 error:
804 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
805 trapnr);
806 cpu_dump_state(env, stderr, fprintf, 0);
807 abort();
808 }
809 process_pending_signals(env);
810 }
811 }
812
813 #endif
814
815 #ifdef TARGET_SPARC
816 #define SPARC64_STACK_BIAS 2047
817
818 //#define DEBUG_WIN
819
820 /* WARNING: dealing with register windows _is_ complicated. More info
821 can be found at http://www.sics.se/~psm/sparcstack.html */
822 static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
823 {
824 index = (index + cwp * 16) % (16 * env->nwindows);
825 /* wrap handling : if cwp is on the last window, then we use the
826 registers 'after' the end */
827 if (index < 8 && env->cwp == env->nwindows - 1)
828 index += 16 * env->nwindows;
829 return index;
830 }
831
832 /* save the register window 'cwp1' */
833 static inline void save_window_offset(CPUSPARCState *env, int cwp1)
834 {
835 unsigned int i;
836 abi_ulong sp_ptr;
837
838 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
839 #ifdef TARGET_SPARC64
840 if (sp_ptr & 3)
841 sp_ptr += SPARC64_STACK_BIAS;
842 #endif
843 #if defined(DEBUG_WIN)
844 printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n",
845 sp_ptr, cwp1);
846 #endif
847 for(i = 0; i < 16; i++) {
848 /* FIXME - what to do if put_user() fails? */
849 put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
850 sp_ptr += sizeof(abi_ulong);
851 }
852 }
853
854 static void save_window(CPUSPARCState *env)
855 {
856 #ifndef TARGET_SPARC64
857 unsigned int new_wim;
858 new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) &
859 ((1LL << env->nwindows) - 1);
860 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
861 env->wim = new_wim;
862 #else
863 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
864 env->cansave++;
865 env->canrestore--;
866 #endif
867 }
868
869 static void restore_window(CPUSPARCState *env)
870 {
871 #ifndef TARGET_SPARC64
872 unsigned int new_wim;
873 #endif
874 unsigned int i, cwp1;
875 abi_ulong sp_ptr;
876
877 #ifndef TARGET_SPARC64
878 new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) &
879 ((1LL << env->nwindows) - 1);
880 #endif
881
882 /* restore the invalid window */
883 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
884 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
885 #ifdef TARGET_SPARC64
886 if (sp_ptr & 3)
887 sp_ptr += SPARC64_STACK_BIAS;
888 #endif
889 #if defined(DEBUG_WIN)
890 printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n",
891 sp_ptr, cwp1);
892 #endif
893 for(i = 0; i < 16; i++) {
894 /* FIXME - what to do if get_user() fails? */
895 get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
896 sp_ptr += sizeof(abi_ulong);
897 }
898 #ifdef TARGET_SPARC64
899 env->canrestore++;
900 if (env->cleanwin < env->nwindows - 1)
901 env->cleanwin++;
902 env->cansave--;
903 #else
904 env->wim = new_wim;
905 #endif
906 }
907
908 static void flush_windows(CPUSPARCState *env)
909 {
910 int offset, cwp1;
911
912 offset = 1;
913 for(;;) {
914 /* if restore would invoke restore_window(), then we can stop */
915 cwp1 = cpu_cwp_inc(env, env->cwp + offset);
916 #ifndef TARGET_SPARC64
917 if (env->wim & (1 << cwp1))
918 break;
919 #else
920 if (env->canrestore == 0)
921 break;
922 env->cansave++;
923 env->canrestore--;
924 #endif
925 save_window_offset(env, cwp1);
926 offset++;
927 }
928 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
929 #ifndef TARGET_SPARC64
930 /* set wim so that restore will reload the registers */
931 env->wim = 1 << cwp1;
932 #endif
933 #if defined(DEBUG_WIN)
934 printf("flush_windows: nb=%d\n", offset - 1);
935 #endif
936 }
937
938 void cpu_loop (CPUSPARCState *env)
939 {
940 int trapnr, ret;
941 target_siginfo_t info;
942
943 while (1) {
944 trapnr = cpu_sparc_exec (env);
945
946 switch (trapnr) {
947 #ifndef TARGET_SPARC64
948 case 0x88:
949 case 0x90:
950 #else
951 case 0x110:
952 case 0x16d:
953 #endif
954 ret = do_syscall (env, env->gregs[1],
955 env->regwptr[0], env->regwptr[1],
956 env->regwptr[2], env->regwptr[3],
957 env->regwptr[4], env->regwptr[5]);
958 if ((unsigned int)ret >= (unsigned int)(-515)) {
959 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
960 env->xcc |= PSR_CARRY;
961 #else
962 env->psr |= PSR_CARRY;
963 #endif
964 ret = -ret;
965 } else {
966 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
967 env->xcc &= ~PSR_CARRY;
968 #else
969 env->psr &= ~PSR_CARRY;
970 #endif
971 }
972 env->regwptr[0] = ret;
973 /* next instruction */
974 env->pc = env->npc;
975 env->npc = env->npc + 4;
976 break;
977 case 0x83: /* flush windows */
978 #ifdef TARGET_ABI32
979 case 0x103:
980 #endif
981 flush_windows(env);
982 /* next instruction */
983 env->pc = env->npc;
984 env->npc = env->npc + 4;
985 break;
986 #ifndef TARGET_SPARC64
987 case TT_WIN_OVF: /* window overflow */
988 save_window(env);
989 break;
990 case TT_WIN_UNF: /* window underflow */
991 restore_window(env);
992 break;
993 case TT_TFAULT:
994 case TT_DFAULT:
995 {
996 info.si_signo = SIGSEGV;
997 info.si_errno = 0;
998 /* XXX: check env->error_code */
999 info.si_code = TARGET_SEGV_MAPERR;
1000 info._sifields._sigfault._addr = env->mmuregs[4];
1001 queue_signal(env, info.si_signo, &info);
1002 }
1003 break;
1004 #else
1005 case TT_SPILL: /* window overflow */
1006 save_window(env);
1007 break;
1008 case TT_FILL: /* window underflow */
1009 restore_window(env);
1010 break;
1011 case TT_TFAULT:
1012 case TT_DFAULT:
1013 {
1014 info.si_signo = SIGSEGV;
1015 info.si_errno = 0;
1016 /* XXX: check env->error_code */
1017 info.si_code = TARGET_SEGV_MAPERR;
1018 if (trapnr == TT_DFAULT)
1019 info._sifields._sigfault._addr = env->dmmuregs[4];
1020 else
1021 info._sifields._sigfault._addr = cpu_tsptr(env)->tpc;
1022 queue_signal(env, info.si_signo, &info);
1023 }
1024 break;
1025 #ifndef TARGET_ABI32
1026 case 0x16e:
1027 flush_windows(env);
1028 sparc64_get_context(env);
1029 break;
1030 case 0x16f:
1031 flush_windows(env);
1032 sparc64_set_context(env);
1033 break;
1034 #endif
1035 #endif
1036 case EXCP_INTERRUPT:
1037 /* just indicate that signals should be handled asap */
1038 break;
1039 case EXCP_DEBUG:
1040 {
1041 int sig;
1042
1043 sig = gdb_handlesig (env, TARGET_SIGTRAP);
1044 if (sig)
1045 {
1046 info.si_signo = sig;
1047 info.si_errno = 0;
1048 info.si_code = TARGET_TRAP_BRKPT;
1049 queue_signal(env, info.si_signo, &info);
1050 }
1051 }
1052 break;
1053 default:
1054 printf ("Unhandled trap: 0x%x\n", trapnr);
1055 cpu_dump_state(env, stderr, fprintf, 0);
1056 exit (1);
1057 }
1058 process_pending_signals (env);
1059 }
1060 }
1061
1062 #endif
1063
1064 #ifdef TARGET_PPC
1065 static inline uint64_t cpu_ppc_get_tb (CPUState *env)
1066 {
1067 /* TO FIX */
1068 return 0;
1069 }
1070
1071 uint64_t cpu_ppc_load_tbl (CPUState *env)
1072 {
1073 return cpu_ppc_get_tb(env);
1074 }
1075
1076 uint32_t cpu_ppc_load_tbu (CPUState *env)
1077 {
1078 return cpu_ppc_get_tb(env) >> 32;
1079 }
1080
1081 uint64_t cpu_ppc_load_atbl (CPUState *env)
1082 {
1083 return cpu_ppc_get_tb(env);
1084 }
1085
1086 uint32_t cpu_ppc_load_atbu (CPUState *env)
1087 {
1088 return cpu_ppc_get_tb(env) >> 32;
1089 }
1090
1091 uint32_t cpu_ppc601_load_rtcu (CPUState *env)
1092 __attribute__ (( alias ("cpu_ppc_load_tbu") ));
1093
1094 uint32_t cpu_ppc601_load_rtcl (CPUState *env)
1095 {
1096 return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
1097 }
1098
1099 /* XXX: to be fixed */
1100 int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, uint32_t *valp)
1101 {
1102 return -1;
1103 }
1104
1105 int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, uint32_t val)
1106 {
1107 return -1;
1108 }
1109
1110 #define EXCP_DUMP(env, fmt, ...) \
1111 do { \
1112 fprintf(stderr, fmt , ## __VA_ARGS__); \
1113 cpu_dump_state(env, stderr, fprintf, 0); \
1114 qemu_log(fmt, ## __VA_ARGS__); \
1115 if (logfile) \
1116 log_cpu_state(env, 0); \
1117 } while (0)
1118
1119 static int do_store_exclusive(CPUPPCState *env)
1120 {
1121 target_ulong addr;
1122 target_ulong page_addr;
1123 target_ulong val;
1124 int flags;
1125 int segv = 0;
1126
1127 addr = env->reserve_ea;
1128 page_addr = addr & TARGET_PAGE_MASK;
1129 start_exclusive();
1130 mmap_lock();
1131 flags = page_get_flags(page_addr);
1132 if ((flags & PAGE_READ) == 0) {
1133 segv = 1;
1134 } else {
1135 int reg = env->reserve_info & 0x1f;
1136 int size = (env->reserve_info >> 5) & 0xf;
1137 int stored = 0;
1138
1139 if (addr == env->reserve_addr) {
1140 switch (size) {
1141 case 1: segv = get_user_u8(val, addr); break;
1142 case 2: segv = get_user_u16(val, addr); break;
1143 case 4: segv = get_user_u32(val, addr); break;
1144 #if defined(TARGET_PPC64)
1145 case 8: segv = get_user_u64(val, addr); break;
1146 #endif
1147 default: abort();
1148 }
1149 if (!segv && val == env->reserve_val) {
1150 val = env->gpr[reg];
1151 switch (size) {
1152 case 1: segv = put_user_u8(val, addr); break;
1153 case 2: segv = put_user_u16(val, addr); break;
1154 case 4: segv = put_user_u32(val, addr); break;
1155 #if defined(TARGET_PPC64)
1156 case 8: segv = put_user_u64(val, addr); break;
1157 #endif
1158 default: abort();
1159 }
1160 if (!segv) {
1161 stored = 1;
1162 }
1163 }
1164 }
1165 env->crf[0] = (stored << 1) | xer_so;
1166 env->reserve_addr = (target_ulong)-1;
1167 }
1168 if (!segv) {
1169 env->nip += 4;
1170 }
1171 mmap_unlock();
1172 end_exclusive();
1173 return segv;
1174 }
1175
1176 void cpu_loop(CPUPPCState *env)
1177 {
1178 target_siginfo_t info;
1179 int trapnr;
1180 uint32_t ret;
1181
1182 for(;;) {
1183 cpu_exec_start(env);
1184 trapnr = cpu_ppc_exec(env);
1185 cpu_exec_end(env);
1186 switch(trapnr) {
1187 case POWERPC_EXCP_NONE:
1188 /* Just go on */
1189 break;
1190 case POWERPC_EXCP_CRITICAL: /* Critical input */
1191 cpu_abort(env, "Critical interrupt while in user mode. "
1192 "Aborting\n");
1193 break;
1194 case POWERPC_EXCP_MCHECK: /* Machine check exception */
1195 cpu_abort(env, "Machine check exception while in user mode. "
1196 "Aborting\n");
1197 break;
1198 case POWERPC_EXCP_DSI: /* Data storage exception */
1199 EXCP_DUMP(env, "Invalid data memory access: 0x" TARGET_FMT_lx "\n",
1200 env->spr[SPR_DAR]);
1201 /* XXX: check this. Seems bugged */
1202 switch (env->error_code & 0xFF000000) {
1203 case 0x40000000:
1204 info.si_signo = TARGET_SIGSEGV;
1205 info.si_errno = 0;
1206 info.si_code = TARGET_SEGV_MAPERR;
1207 break;
1208 case 0x04000000:
1209 info.si_signo = TARGET_SIGILL;
1210 info.si_errno = 0;
1211 info.si_code = TARGET_ILL_ILLADR;
1212 break;
1213 case 0x08000000:
1214 info.si_signo = TARGET_SIGSEGV;
1215 info.si_errno = 0;
1216 info.si_code = TARGET_SEGV_ACCERR;
1217 break;
1218 default:
1219 /* Let's send a regular segfault... */
1220 EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
1221 env->error_code);
1222 info.si_signo = TARGET_SIGSEGV;
1223 info.si_errno = 0;
1224 info.si_code = TARGET_SEGV_MAPERR;
1225 break;
1226 }
1227 info._sifields._sigfault._addr = env->nip;
1228 queue_signal(env, info.si_signo, &info);
1229 break;
1230 case POWERPC_EXCP_ISI: /* Instruction storage exception */
1231 EXCP_DUMP(env, "Invalid instruction fetch: 0x\n" TARGET_FMT_lx
1232 "\n", env->spr[SPR_SRR0]);
1233 /* XXX: check this */
1234 switch (env->error_code & 0xFF000000) {
1235 case 0x40000000:
1236 info.si_signo = TARGET_SIGSEGV;
1237 info.si_errno = 0;
1238 info.si_code = TARGET_SEGV_MAPERR;
1239 break;
1240 case 0x10000000:
1241 case 0x08000000:
1242 info.si_signo = TARGET_SIGSEGV;
1243 info.si_errno = 0;
1244 info.si_code = TARGET_SEGV_ACCERR;
1245 break;
1246 default:
1247 /* Let's send a regular segfault... */
1248 EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
1249 env->error_code);
1250 info.si_signo = TARGET_SIGSEGV;
1251 info.si_errno = 0;
1252 info.si_code = TARGET_SEGV_MAPERR;
1253 break;
1254 }
1255 info._sifields._sigfault._addr = env->nip - 4;
1256 queue_signal(env, info.si_signo, &info);
1257 break;
1258 case POWERPC_EXCP_EXTERNAL: /* External input */
1259 cpu_abort(env, "External interrupt while in user mode. "
1260 "Aborting\n");
1261 break;
1262 case POWERPC_EXCP_ALIGN: /* Alignment exception */
1263 EXCP_DUMP(env, "Unaligned memory access\n");
1264 /* XXX: check this */
1265 info.si_signo = TARGET_SIGBUS;
1266 info.si_errno = 0;
1267 info.si_code = TARGET_BUS_ADRALN;
1268 info._sifields._sigfault._addr = env->nip - 4;
1269 queue_signal(env, info.si_signo, &info);
1270 break;
1271 case POWERPC_EXCP_PROGRAM: /* Program exception */
1272 /* XXX: check this */
1273 switch (env->error_code & ~0xF) {
1274 case POWERPC_EXCP_FP:
1275 EXCP_DUMP(env, "Floating point program exception\n");
1276 info.si_signo = TARGET_SIGFPE;
1277 info.si_errno = 0;
1278 switch (env->error_code & 0xF) {
1279 case POWERPC_EXCP_FP_OX:
1280 info.si_code = TARGET_FPE_FLTOVF;
1281 break;
1282 case POWERPC_EXCP_FP_UX:
1283 info.si_code = TARGET_FPE_FLTUND;
1284 break;
1285 case POWERPC_EXCP_FP_ZX:
1286 case POWERPC_EXCP_FP_VXZDZ:
1287 info.si_code = TARGET_FPE_FLTDIV;
1288 break;
1289 case POWERPC_EXCP_FP_XX:
1290 info.si_code = TARGET_FPE_FLTRES;
1291 break;
1292 case POWERPC_EXCP_FP_VXSOFT:
1293 info.si_code = TARGET_FPE_FLTINV;
1294 break;
1295 case POWERPC_EXCP_FP_VXSNAN:
1296 case POWERPC_EXCP_FP_VXISI:
1297 case POWERPC_EXCP_FP_VXIDI:
1298 case POWERPC_EXCP_FP_VXIMZ:
1299 case POWERPC_EXCP_FP_VXVC:
1300 case POWERPC_EXCP_FP_VXSQRT:
1301 case POWERPC_EXCP_FP_VXCVI:
1302 info.si_code = TARGET_FPE_FLTSUB;
1303 break;
1304 default:
1305 EXCP_DUMP(env, "Unknown floating point exception (%02x)\n",
1306 env->error_code);
1307 break;
1308 }
1309 break;
1310 case POWERPC_EXCP_INVAL:
1311 EXCP_DUMP(env, "Invalid instruction\n");
1312 info.si_signo = TARGET_SIGILL;
1313 info.si_errno = 0;
1314 switch (env->error_code & 0xF) {
1315 case POWERPC_EXCP_INVAL_INVAL:
1316 info.si_code = TARGET_ILL_ILLOPC;
1317 break;
1318 case POWERPC_EXCP_INVAL_LSWX:
1319 info.si_code = TARGET_ILL_ILLOPN;
1320 break;
1321 case POWERPC_EXCP_INVAL_SPR:
1322 info.si_code = TARGET_ILL_PRVREG;
1323 break;
1324 case POWERPC_EXCP_INVAL_FP:
1325 info.si_code = TARGET_ILL_COPROC;
1326 break;
1327 default:
1328 EXCP_DUMP(env, "Unknown invalid operation (%02x)\n",
1329 env->error_code & 0xF);
1330 info.si_code = TARGET_ILL_ILLADR;
1331 break;
1332 }
1333 break;
1334 case POWERPC_EXCP_PRIV:
1335 EXCP_DUMP(env, "Privilege violation\n");
1336 info.si_signo = TARGET_SIGILL;
1337 info.si_errno = 0;
1338 switch (env->error_code & 0xF) {
1339 case POWERPC_EXCP_PRIV_OPC:
1340 info.si_code = TARGET_ILL_PRVOPC;
1341 break;
1342 case POWERPC_EXCP_PRIV_REG:
1343 info.si_code = TARGET_ILL_PRVREG;
1344 break;
1345 default:
1346 EXCP_DUMP(env, "Unknown privilege violation (%02x)\n",
1347 env->error_code & 0xF);
1348 info.si_code = TARGET_ILL_PRVOPC;
1349 break;
1350 }
1351 break;
1352 case POWERPC_EXCP_TRAP:
1353 cpu_abort(env, "Tried to call a TRAP\n");
1354 break;
1355 default:
1356 /* Should not happen ! */
1357 cpu_abort(env, "Unknown program exception (%02x)\n",
1358 env->error_code);
1359 break;
1360 }
1361 info._sifields._sigfault._addr = env->nip - 4;
1362 queue_signal(env, info.si_signo, &info);
1363 break;
1364 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
1365 EXCP_DUMP(env, "No floating point allowed\n");
1366 info.si_signo = TARGET_SIGILL;
1367 info.si_errno = 0;
1368 info.si_code = TARGET_ILL_COPROC;
1369 info._sifields._sigfault._addr = env->nip - 4;
1370 queue_signal(env, info.si_signo, &info);
1371 break;
1372 case POWERPC_EXCP_SYSCALL: /* System call exception */
1373 cpu_abort(env, "Syscall exception while in user mode. "
1374 "Aborting\n");
1375 break;
1376 case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
1377 EXCP_DUMP(env, "No APU instruction allowed\n");
1378 info.si_signo = TARGET_SIGILL;
1379 info.si_errno = 0;
1380 info.si_code = TARGET_ILL_COPROC;
1381 info._sifields._sigfault._addr = env->nip - 4;
1382 queue_signal(env, info.si_signo, &info);
1383 break;
1384 case POWERPC_EXCP_DECR: /* Decrementer exception */
1385 cpu_abort(env, "Decrementer interrupt while in user mode. "
1386 "Aborting\n");
1387 break;
1388 case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
1389 cpu_abort(env, "Fix interval timer interrupt while in user mode. "
1390 "Aborting\n");
1391 break;
1392 case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
1393 cpu_abort(env, "Watchdog timer interrupt while in user mode. "
1394 "Aborting\n");
1395 break;
1396 case POWERPC_EXCP_DTLB: /* Data TLB error */
1397 cpu_abort(env, "Data TLB exception while in user mode. "
1398 "Aborting\n");
1399 break;
1400 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
1401 cpu_abort(env, "Instruction TLB exception while in user mode. "
1402 "Aborting\n");
1403 break;
1404 case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */
1405 EXCP_DUMP(env, "No SPE/floating-point instruction allowed\n");
1406 info.si_signo = TARGET_SIGILL;
1407 info.si_errno = 0;
1408 info.si_code = TARGET_ILL_COPROC;
1409 info._sifields._sigfault._addr = env->nip - 4;
1410 queue_signal(env, info.si_signo, &info);
1411 break;
1412 case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */
1413 cpu_abort(env, "Embedded floating-point data IRQ not handled\n");
1414 break;
1415 case POWERPC_EXCP_EFPRI: /* Embedded floating-point round IRQ */
1416 cpu_abort(env, "Embedded floating-point round IRQ not handled\n");
1417 break;
1418 case POWERPC_EXCP_EPERFM: /* Embedded performance monitor IRQ */
1419 cpu_abort(env, "Performance monitor exception not handled\n");
1420 break;
1421 case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
1422 cpu_abort(env, "Doorbell interrupt while in user mode. "
1423 "Aborting\n");
1424 break;
1425 case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
1426 cpu_abort(env, "Doorbell critical interrupt while in user mode. "
1427 "Aborting\n");
1428 break;
1429 case POWERPC_EXCP_RESET: /* System reset exception */
1430 cpu_abort(env, "Reset interrupt while in user mode. "
1431 "Aborting\n");
1432 break;
1433 case POWERPC_EXCP_DSEG: /* Data segment exception */
1434 cpu_abort(env, "Data segment exception while in user mode. "
1435 "Aborting\n");
1436 break;
1437 case POWERPC_EXCP_ISEG: /* Instruction segment exception */
1438 cpu_abort(env, "Instruction segment exception "
1439 "while in user mode. Aborting\n");
1440 break;
1441 /* PowerPC 64 with hypervisor mode support */
1442 case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
1443 cpu_abort(env, "Hypervisor decrementer interrupt "
1444 "while in user mode. Aborting\n");
1445 break;
1446 case POWERPC_EXCP_TRACE: /* Trace exception */
1447 /* Nothing to do:
1448 * we use this exception to emulate step-by-step execution mode.
1449 */
1450 break;
1451 /* PowerPC 64 with hypervisor mode support */
1452 case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
1453 cpu_abort(env, "Hypervisor data storage exception "
1454 "while in user mode. Aborting\n");
1455 break;
1456 case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */
1457 cpu_abort(env, "Hypervisor instruction storage exception "
1458 "while in user mode. Aborting\n");
1459 break;
1460 case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
1461 cpu_abort(env, "Hypervisor data segment exception "
1462 "while in user mode. Aborting\n");
1463 break;
1464 case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */
1465 cpu_abort(env, "Hypervisor instruction segment exception "
1466 "while in user mode. Aborting\n");
1467 break;
1468 case POWERPC_EXCP_VPU: /* Vector unavailable exception */
1469 EXCP_DUMP(env, "No Altivec instructions allowed\n");
1470 info.si_signo = TARGET_SIGILL;
1471 info.si_errno = 0;
1472 info.si_code = TARGET_ILL_COPROC;
1473 info._sifields._sigfault._addr = env->nip - 4;
1474 queue_signal(env, info.si_signo, &info);
1475 break;
1476 case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */
1477 cpu_abort(env, "Programable interval timer interrupt "
1478 "while in user mode. Aborting\n");
1479 break;
1480 case POWERPC_EXCP_IO: /* IO error exception */
1481 cpu_abort(env, "IO error exception while in user mode. "
1482 "Aborting\n");
1483 break;
1484 case POWERPC_EXCP_RUNM: /* Run mode exception */
1485 cpu_abort(env, "Run mode exception while in user mode. "
1486 "Aborting\n");
1487 break;
1488 case POWERPC_EXCP_EMUL: /* Emulation trap exception */
1489 cpu_abort(env, "Emulation trap exception not handled\n");
1490 break;
1491 case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
1492 cpu_abort(env, "Instruction fetch TLB exception "
1493 "while in user-mode. Aborting");
1494 break;
1495 case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
1496 cpu_abort(env, "Data load TLB exception while in user-mode. "
1497 "Aborting");
1498 break;
1499 case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
1500 cpu_abort(env, "Data store TLB exception while in user-mode. "
1501 "Aborting");
1502 break;
1503 case POWERPC_EXCP_FPA: /* Floating-point assist exception */
1504 cpu_abort(env, "Floating-point assist exception not handled\n");
1505 break;
1506 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
1507 cpu_abort(env, "Instruction address breakpoint exception "
1508 "not handled\n");
1509 break;
1510 case POWERPC_EXCP_SMI: /* System management interrupt */
1511 cpu_abort(env, "System management interrupt while in user mode. "
1512 "Aborting\n");
1513 break;
1514 case POWERPC_EXCP_THERM: /* Thermal interrupt */
1515 cpu_abort(env, "Thermal interrupt interrupt while in user mode. "
1516 "Aborting\n");
1517 break;
1518 case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */
1519 cpu_abort(env, "Performance monitor exception not handled\n");
1520 break;
1521 case POWERPC_EXCP_VPUA: /* Vector assist exception */
1522 cpu_abort(env, "Vector assist exception not handled\n");
1523 break;
1524 case POWERPC_EXCP_SOFTP: /* Soft patch exception */
1525 cpu_abort(env, "Soft patch exception not handled\n");
1526 break;
1527 case POWERPC_EXCP_MAINT: /* Maintenance exception */
1528 cpu_abort(env, "Maintenance exception while in user mode. "
1529 "Aborting\n");
1530 break;
1531 case POWERPC_EXCP_STOP: /* stop translation */
1532 /* We did invalidate the instruction cache. Go on */
1533 break;
1534 case POWERPC_EXCP_BRANCH: /* branch instruction: */
1535 /* We just stopped because of a branch. Go on */
1536 break;
1537 case POWERPC_EXCP_SYSCALL_USER:
1538 /* system call in user-mode emulation */
1539 /* WARNING:
1540 * PPC ABI uses overflow flag in cr0 to signal an error
1541 * in syscalls.
1542 */
1543 #if 0
1544 printf("syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n", env->gpr[0],
1545 env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6]);
1546 #endif
1547 env->crf[0] &= ~0x1;
1548 ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
1549 env->gpr[5], env->gpr[6], env->gpr[7],
1550 env->gpr[8]);
1551 if (ret == (uint32_t)(-TARGET_QEMU_ESIGRETURN)) {
1552 /* Returning from a successful sigreturn syscall.
1553 Avoid corrupting register state. */
1554 break;
1555 }
1556 if (ret > (uint32_t)(-515)) {
1557 env->crf[0] |= 0x1;
1558 ret = -ret;
1559 }
1560 env->gpr[3] = ret;
1561 #if 0
1562 printf("syscall returned 0x%08x (%d)\n", ret, ret);
1563 #endif
1564 break;
1565 case POWERPC_EXCP_STCX:
1566 if (do_store_exclusive(env)) {
1567 info.si_signo = TARGET_SIGSEGV;
1568 info.si_errno = 0;
1569 info.si_code = TARGET_SEGV_MAPERR;
1570 info._sifields._sigfault._addr = env->nip;
1571 queue_signal(env, info.si_signo, &info);
1572 }
1573 break;
1574 case EXCP_DEBUG:
1575 {
1576 int sig;
1577
1578 sig = gdb_handlesig(env, TARGET_SIGTRAP);
1579 if (sig) {
1580 info.si_signo = sig;
1581 info.si_errno = 0;
1582 info.si_code = TARGET_TRAP_BRKPT;
1583 queue_signal(env, info.si_signo, &info);
1584 }
1585 }
1586 break;
1587 case EXCP_INTERRUPT:
1588 /* just indicate that signals should be handled asap */
1589 break;
1590 default:
1591 cpu_abort(env, "Unknown exception 0x%d. Aborting\n", trapnr);
1592 break;
1593 }
1594 process_pending_signals(env);
1595 }
1596 }
1597 #endif
1598
1599 #ifdef TARGET_MIPS
1600
1601 #define MIPS_SYS(name, args) args,
1602
1603 static const uint8_t mips_syscall_args[] = {
1604 MIPS_SYS(sys_syscall , 0) /* 4000 */
1605 MIPS_SYS(sys_exit , 1)
1606 MIPS_SYS(sys_fork , 0)
1607 MIPS_SYS(sys_read , 3)
1608 MIPS_SYS(sys_write , 3)
1609 MIPS_SYS(sys_open , 3) /* 4005 */
1610 MIPS_SYS(sys_close , 1)
1611 MIPS_SYS(sys_waitpid , 3)
1612 MIPS_SYS(sys_creat , 2)
1613 MIPS_SYS(sys_link , 2)
1614 MIPS_SYS(sys_unlink , 1) /* 4010 */
1615 MIPS_SYS(sys_execve , 0)
1616 MIPS_SYS(sys_chdir , 1)
1617 MIPS_SYS(sys_time , 1)
1618 MIPS_SYS(sys_mknod , 3)
1619 MIPS_SYS(sys_chmod , 2) /* 4015 */
1620 MIPS_SYS(sys_lchown , 3)
1621 MIPS_SYS(sys_ni_syscall , 0)
1622 MIPS_SYS(sys_ni_syscall , 0) /* was sys_stat */
1623 MIPS_SYS(sys_lseek , 3)
1624 MIPS_SYS(sys_getpid , 0) /* 4020 */
1625 MIPS_SYS(sys_mount , 5)
1626 MIPS_SYS(sys_oldumount , 1)
1627 MIPS_SYS(sys_setuid , 1)
1628 MIPS_SYS(sys_getuid , 0)
1629 MIPS_SYS(sys_stime , 1) /* 4025 */
1630 MIPS_SYS(sys_ptrace , 4)
1631 MIPS_SYS(sys_alarm , 1)
1632 MIPS_SYS(sys_ni_syscall , 0) /* was sys_fstat */
1633 MIPS_SYS(sys_pause , 0)
1634 MIPS_SYS(sys_utime , 2) /* 4030 */
1635 MIPS_SYS(sys_ni_syscall , 0)
1636 MIPS_SYS(sys_ni_syscall , 0)
1637 MIPS_SYS(sys_access , 2)
1638 MIPS_SYS(sys_nice , 1)
1639 MIPS_SYS(sys_ni_syscall , 0) /* 4035 */
1640 MIPS_SYS(sys_sync , 0)
1641 MIPS_SYS(sys_kill , 2)
1642 MIPS_SYS(sys_rename , 2)
1643 MIPS_SYS(sys_mkdir , 2)
1644 MIPS_SYS(sys_rmdir , 1) /* 4040 */
1645 MIPS_SYS(sys_dup , 1)
1646 MIPS_SYS(sys_pipe , 0)
1647 MIPS_SYS(sys_times , 1)
1648 MIPS_SYS(sys_ni_syscall , 0)
1649 MIPS_SYS(sys_brk , 1) /* 4045 */
1650 MIPS_SYS(sys_setgid , 1)
1651 MIPS_SYS(sys_getgid , 0)
1652 MIPS_SYS(sys_ni_syscall , 0) /* was signal(2) */
1653 MIPS_SYS(sys_geteuid , 0)
1654 MIPS_SYS(sys_getegid , 0) /* 4050 */
1655 MIPS_SYS(sys_acct , 0)
1656 MIPS_SYS(sys_umount , 2)
1657 MIPS_SYS(sys_ni_syscall , 0)
1658 MIPS_SYS(sys_ioctl , 3)
1659 MIPS_SYS(sys_fcntl , 3) /* 4055 */
1660 MIPS_SYS(sys_ni_syscall , 2)
1661 MIPS_SYS(sys_setpgid , 2)
1662 MIPS_SYS(sys_ni_syscall , 0)
1663 MIPS_SYS(sys_olduname , 1)
1664 MIPS_SYS(sys_umask , 1) /* 4060 */
1665 MIPS_SYS(sys_chroot , 1)
1666 MIPS_SYS(sys_ustat , 2)
1667 MIPS_SYS(sys_dup2 , 2)
1668 MIPS_SYS(sys_getppid , 0)
1669 MIPS_SYS(sys_getpgrp , 0) /* 4065 */
1670 MIPS_SYS(sys_setsid , 0)
1671 MIPS_SYS(sys_sigaction , 3)
1672 MIPS_SYS(sys_sgetmask , 0)
1673 MIPS_SYS(sys_ssetmask , 1)
1674 MIPS_SYS(sys_setreuid , 2) /* 4070 */
1675 MIPS_SYS(sys_setregid , 2)
1676 MIPS_SYS(sys_sigsuspend , 0)
1677 MIPS_SYS(sys_sigpending , 1)
1678 MIPS_SYS(sys_sethostname , 2)
1679 MIPS_SYS(sys_setrlimit , 2) /* 4075 */
1680 MIPS_SYS(sys_getrlimit , 2)
1681 MIPS_SYS(sys_getrusage , 2)
1682 MIPS_SYS(sys_gettimeofday, 2)
1683 MIPS_SYS(sys_settimeofday, 2)
1684 MIPS_SYS(sys_getgroups , 2) /* 4080 */
1685 MIPS_SYS(sys_setgroups , 2)
1686 MIPS_SYS(sys_ni_syscall , 0) /* old_select */
1687 MIPS_SYS(sys_symlink , 2)
1688 MIPS_SYS(sys_ni_syscall , 0) /* was sys_lstat */
1689 MIPS_SYS(sys_readlink , 3) /* 4085 */
1690 MIPS_SYS(sys_uselib , 1)
1691 MIPS_SYS(sys_swapon , 2)
1692 MIPS_SYS(sys_reboot , 3)
1693 MIPS_SYS(old_readdir , 3)
1694 MIPS_SYS(old_mmap , 6) /* 4090 */
1695 MIPS_SYS(sys_munmap , 2)
1696 MIPS_SYS(sys_truncate , 2)
1697 MIPS_SYS(sys_ftruncate , 2)
1698 MIPS_SYS(sys_fchmod , 2)
1699 MIPS_SYS(sys_fchown , 3) /* 4095 */
1700 MIPS_SYS(sys_getpriority , 2)
1701 MIPS_SYS(sys_setpriority , 3)
1702 MIPS_SYS(sys_ni_syscall , 0)
1703 MIPS_SYS(sys_statfs , 2)
1704 MIPS_SYS(sys_fstatfs , 2) /* 4100 */
1705 MIPS_SYS(sys_ni_syscall , 0) /* was ioperm(2) */
1706 MIPS_SYS(sys_socketcall , 2)
1707 MIPS_SYS(sys_syslog , 3)
1708 MIPS_SYS(sys_setitimer , 3)
1709 MIPS_SYS(sys_getitimer , 2) /* 4105 */
1710 MIPS_SYS(sys_newstat , 2)
1711 MIPS_SYS(sys_newlstat , 2)
1712 MIPS_SYS(sys_newfstat , 2)
1713 MIPS_SYS(sys_uname , 1)
1714 MIPS_SYS(sys_ni_syscall , 0) /* 4110 was iopl(2) */
1715 MIPS_SYS(sys_vhangup , 0)
1716 MIPS_SYS(sys_ni_syscall , 0) /* was sys_idle() */
1717 MIPS_SYS(sys_ni_syscall , 0) /* was sys_vm86 */
1718 MIPS_SYS(sys_wait4 , 4)
1719 MIPS_SYS(sys_swapoff , 1) /* 4115 */
1720 MIPS_SYS(sys_sysinfo , 1)
1721 MIPS_SYS(sys_ipc , 6)
1722 MIPS_SYS(sys_fsync , 1)
1723 MIPS_SYS(sys_sigreturn , 0)
1724 MIPS_SYS(sys_clone , 6) /* 4120 */
1725 MIPS_SYS(sys_setdomainname, 2)
1726 MIPS_SYS(sys_newuname , 1)
1727 MIPS_SYS(sys_ni_syscall , 0) /* sys_modify_ldt */
1728 MIPS_SYS(sys_adjtimex , 1)
1729 MIPS_SYS(sys_mprotect , 3) /* 4125 */
1730 MIPS_SYS(sys_sigprocmask , 3)
1731 MIPS_SYS(sys_ni_syscall , 0) /* was create_module */
1732 MIPS_SYS(sys_init_module , 5)
1733 MIPS_SYS(sys_delete_module, 1)
1734 MIPS_SYS(sys_ni_syscall , 0) /* 4130 was get_kernel_syms */
1735 MIPS_SYS(sys_quotactl , 0)
1736 MIPS_SYS(sys_getpgid , 1)
1737 MIPS_SYS(sys_fchdir , 1)
1738 MIPS_SYS(sys_bdflush , 2)
1739 MIPS_SYS(sys_sysfs , 3) /* 4135 */
1740 MIPS_SYS(sys_personality , 1)
1741 MIPS_SYS(sys_ni_syscall , 0) /* for afs_syscall */
1742 MIPS_SYS(sys_setfsuid , 1)
1743 MIPS_SYS(sys_setfsgid , 1)
1744 MIPS_SYS(sys_llseek , 5) /* 4140 */
1745 MIPS_SYS(sys_getdents , 3)
1746 MIPS_SYS(sys_select , 5)
1747 MIPS_SYS(sys_flock , 2)
1748 MIPS_SYS(sys_msync , 3)
1749 MIPS_SYS(sys_readv , 3) /* 4145 */
1750 MIPS_SYS(sys_writev , 3)
1751 MIPS_SYS(sys_cacheflush , 3)
1752 MIPS_SYS(sys_cachectl , 3)
1753 MIPS_SYS(sys_sysmips , 4)
1754 MIPS_SYS(sys_ni_syscall , 0) /* 4150 */
1755 MIPS_SYS(sys_getsid , 1)
1756 MIPS_SYS(sys_fdatasync , 0)
1757 MIPS_SYS(sys_sysctl , 1)
1758 MIPS_SYS(sys_mlock , 2)
1759 MIPS_SYS(sys_munlock , 2) /* 4155 */
1760 MIPS_SYS(sys_mlockall , 1)
1761 MIPS_SYS(sys_munlockall , 0)
1762 MIPS_SYS(sys_sched_setparam, 2)
1763 MIPS_SYS(sys_sched_getparam, 2)
1764 MIPS_SYS(sys_sched_setscheduler, 3) /* 4160 */
1765 MIPS_SYS(sys_sched_getscheduler, 1)
1766 MIPS_SYS(sys_sched_yield , 0)
1767 MIPS_SYS(sys_sched_get_priority_max, 1)
1768 MIPS_SYS(sys_sched_get_priority_min, 1)
1769 MIPS_SYS(sys_sched_rr_get_interval, 2) /* 4165 */
1770 MIPS_SYS(sys_nanosleep, 2)
1771 MIPS_SYS(sys_mremap , 4)
1772 MIPS_SYS(sys_accept , 3)
1773 MIPS_SYS(sys_bind , 3)
1774 MIPS_SYS(sys_connect , 3) /* 4170 */
1775 MIPS_SYS(sys_getpeername , 3)
1776 MIPS_SYS(sys_getsockname , 3)
1777 MIPS_SYS(sys_getsockopt , 5)
1778 MIPS_SYS(sys_listen , 2)
1779 MIPS_SYS(sys_recv , 4) /* 4175 */
1780 MIPS_SYS(sys_recvfrom , 6)
1781 MIPS_SYS(sys_recvmsg , 3)
1782 MIPS_SYS(sys_send , 4)
1783 MIPS_SYS(sys_sendmsg , 3)
1784 MIPS_SYS(sys_sendto , 6) /* 4180 */
1785 MIPS_SYS(sys_setsockopt , 5)
1786 MIPS_SYS(sys_shutdown , 2)
1787 MIPS_SYS(sys_socket , 3)
1788 MIPS_SYS(sys_socketpair , 4)
1789 MIPS_SYS(sys_setresuid , 3) /* 4185 */
1790 MIPS_SYS(sys_getresuid , 3)
1791 MIPS_SYS(sys_ni_syscall , 0) /* was sys_query_module */
1792 MIPS_SYS(sys_poll , 3)
1793 MIPS_SYS(sys_nfsservctl , 3)
1794 MIPS_SYS(sys_setresgid , 3) /* 4190 */
1795 MIPS_SYS(sys_getresgid , 3)
1796 MIPS_SYS(sys_prctl , 5)
1797 MIPS_SYS(sys_rt_sigreturn, 0)
1798 MIPS_SYS(sys_rt_sigaction, 4)
1799 MIPS_SYS(sys_rt_sigprocmask, 4) /* 4195 */
1800 MIPS_SYS(sys_rt_sigpending, 2)
1801 MIPS_SYS(sys_rt_sigtimedwait, 4)
1802 MIPS_SYS(sys_rt_sigqueueinfo, 3)
1803 MIPS_SYS(sys_rt_sigsuspend, 0)
1804 MIPS_SYS(sys_pread64 , 6) /* 4200 */
1805 MIPS_SYS(sys_pwrite64 , 6)
1806 MIPS_SYS(sys_chown , 3)
1807 MIPS_SYS(sys_getcwd , 2)
1808 MIPS_SYS(sys_capget , 2)
1809 MIPS_SYS(sys_capset , 2) /* 4205 */
1810 MIPS_SYS(sys_sigaltstack , 0)
1811 MIPS_SYS(sys_sendfile , 4)
1812 MIPS_SYS(sys_ni_syscall , 0)
1813 MIPS_SYS(sys_ni_syscall , 0)
1814 MIPS_SYS(sys_mmap2 , 6) /* 4210 */
1815 MIPS_SYS(sys_truncate64 , 4)
1816 MIPS_SYS(sys_ftruncate64 , 4)
1817 MIPS_SYS(sys_stat64 , 2)
1818 MIPS_SYS(sys_lstat64 , 2)
1819 MIPS_SYS(sys_fstat64 , 2) /* 4215 */
1820 MIPS_SYS(sys_pivot_root , 2)
1821 MIPS_SYS(sys_mincore , 3)
1822 MIPS_SYS(sys_madvise , 3)
1823 MIPS_SYS(sys_getdents64 , 3)
1824 MIPS_SYS(sys_fcntl64 , 3) /* 4220 */
1825 MIPS_SYS(sys_ni_syscall , 0)
1826 MIPS_SYS(sys_gettid , 0)
1827 MIPS_SYS(sys_readahead , 5)
1828 MIPS_SYS(sys_setxattr , 5)
1829 MIPS_SYS(sys_lsetxattr , 5) /* 4225 */
1830 MIPS_SYS(sys_fsetxattr , 5)
1831 MIPS_SYS(sys_getxattr , 4)
1832 MIPS_SYS(sys_lgetxattr , 4)
1833 MIPS_SYS(sys_fgetxattr , 4)
1834 MIPS_SYS(sys_listxattr , 3) /* 4230 */
1835 MIPS_SYS(sys_llistxattr , 3)
1836 MIPS_SYS(sys_flistxattr , 3)
1837 MIPS_SYS(sys_removexattr , 2)
1838 MIPS_SYS(sys_lremovexattr, 2)
1839 MIPS_SYS(sys_fremovexattr, 2) /* 4235 */
1840 MIPS_SYS(sys_tkill , 2)
1841 MIPS_SYS(sys_sendfile64 , 5)
1842 MIPS_SYS(sys_futex , 2)
1843 MIPS_SYS(sys_sched_setaffinity, 3)
1844 MIPS_SYS(sys_sched_getaffinity, 3) /* 4240 */
1845 MIPS_SYS(sys_io_setup , 2)
1846 MIPS_SYS(sys_io_destroy , 1)
1847 MIPS_SYS(sys_io_getevents, 5)
1848 MIPS_SYS(sys_io_submit , 3)
1849 MIPS_SYS(sys_io_cancel , 3) /* 4245 */
1850 MIPS_SYS(sys_exit_group , 1)
1851 MIPS_SYS(sys_lookup_dcookie, 3)
1852 MIPS_SYS(sys_epoll_create, 1)
1853 MIPS_SYS(sys_epoll_ctl , 4)
1854 MIPS_SYS(sys_epoll_wait , 3) /* 4250 */
1855 MIPS_SYS(sys_remap_file_pages, 5)
1856 MIPS_SYS(sys_set_tid_address, 1)
1857 MIPS_SYS(sys_restart_syscall, 0)
1858 MIPS_SYS(sys_fadvise64_64, 7)
1859 MIPS_SYS(sys_statfs64 , 3) /* 4255 */
1860 MIPS_SYS(sys_fstatfs64 , 2)
1861 MIPS_SYS(sys_timer_create, 3)
1862 MIPS_SYS(sys_timer_settime, 4)
1863 MIPS_SYS(sys_timer_gettime, 2)
1864 MIPS_SYS(sys_timer_getoverrun, 1) /* 4260 */
1865 MIPS_SYS(sys_timer_delete, 1)
1866 MIPS_SYS(sys_clock_settime, 2)
1867 MIPS_SYS(sys_clock_gettime, 2)
1868 MIPS_SYS(sys_clock_getres, 2)
1869 MIPS_SYS(sys_clock_nanosleep, 4) /* 4265 */
1870 MIPS_SYS(sys_tgkill , 3)
1871 MIPS_SYS(sys_utimes , 2)
1872 MIPS_SYS(sys_mbind , 4)
1873 MIPS_SYS(sys_ni_syscall , 0) /* sys_get_mempolicy */
1874 MIPS_SYS(sys_ni_syscall , 0) /* 4270 sys_set_mempolicy */
1875 MIPS_SYS(sys_mq_open , 4)
1876 MIPS_SYS(sys_mq_unlink , 1)
1877 MIPS_SYS(sys_mq_timedsend, 5)
1878 MIPS_SYS(sys_mq_timedreceive, 5)
1879 MIPS_SYS(sys_mq_notify , 2) /* 4275 */
1880 MIPS_SYS(sys_mq_getsetattr, 3)
1881 MIPS_SYS(sys_ni_syscall , 0) /* sys_vserver */
1882 MIPS_SYS(sys_waitid , 4)
1883 MIPS_SYS(sys_ni_syscall , 0) /* available, was setaltroot */
1884 MIPS_SYS(sys_add_key , 5)
1885 MIPS_SYS(sys_request_key, 4)
1886 MIPS_SYS(sys_keyctl , 5)
1887 MIPS_SYS(sys_set_thread_area, 1)
1888 MIPS_SYS(sys_inotify_init, 0)
1889 MIPS_SYS(sys_inotify_add_watch, 3) /* 4285 */
1890 MIPS_SYS(sys_inotify_rm_watch, 2)
1891 MIPS_SYS(sys_migrate_pages, 4)
1892 MIPS_SYS(sys_openat, 4)
1893 MIPS_SYS(sys_mkdirat, 3)
1894 MIPS_SYS(sys_mknodat, 4) /* 4290 */
1895 MIPS_SYS(sys_fchownat, 5)
1896 MIPS_SYS(sys_futimesat, 3)
1897 MIPS_SYS(sys_fstatat64, 4)
1898 MIPS_SYS(sys_unlinkat, 3)
1899 MIPS_SYS(sys_renameat, 4) /* 4295 */
1900 MIPS_SYS(sys_linkat, 5)
1901 MIPS_SYS(sys_symlinkat, 3)
1902 MIPS_SYS(sys_readlinkat, 4)
1903 MIPS_SYS(sys_fchmodat, 3)
1904 MIPS_SYS(sys_faccessat, 3) /* 4300 */
1905 MIPS_SYS(sys_pselect6, 6)
1906 MIPS_SYS(sys_ppoll, 5)
1907 MIPS_SYS(sys_unshare, 1)
1908 MIPS_SYS(sys_splice, 4)
1909 MIPS_SYS(sys_sync_file_range, 7) /* 4305 */
1910 MIPS_SYS(sys_tee, 4)
1911 MIPS_SYS(sys_vmsplice, 4)
1912 MIPS_SYS(sys_move_pages, 6)
1913 MIPS_SYS(sys_set_robust_list, 2)
1914 MIPS_SYS(sys_get_robust_list, 3) /* 4310 */
1915 MIPS_SYS(sys_kexec_load, 4)
1916 MIPS_SYS(sys_getcpu, 3)
1917 MIPS_SYS(sys_epoll_pwait, 6)
1918 MIPS_SYS(sys_ioprio_set, 3)
1919 MIPS_SYS(sys_ioprio_get, 2)
1920 };
1921
1922 #undef MIPS_SYS
1923
1924 static int do_store_exclusive(CPUMIPSState *env)
1925 {
1926 target_ulong addr;
1927 target_ulong page_addr;
1928 target_ulong val;
1929 int flags;
1930 int segv = 0;
1931 int reg;
1932 int d;
1933
1934 addr = env->lladdr;
1935 page_addr = addr & TARGET_PAGE_MASK;
1936 start_exclusive();
1937 mmap_lock();
1938 flags = page_get_flags(page_addr);
1939 if ((flags & PAGE_READ) == 0) {
1940 segv = 1;
1941 } else {
1942 reg = env->llreg & 0x1f;
1943 d = (env->llreg & 0x20) != 0;
1944 if (d) {
1945 segv = get_user_s64(val, addr);
1946 } else {
1947 segv = get_user_s32(val, addr);
1948 }
1949 if (!segv) {
1950 if (val != env->llval) {
1951 env->active_tc.gpr[reg] = 0;
1952 } else {
1953 if (d) {
1954 segv = put_user_u64(env->llnewval, addr);
1955 } else {
1956 segv = put_user_u32(env->llnewval, addr);
1957 }
1958 if (!segv) {
1959 env->active_tc.gpr[reg] = 1;
1960 }
1961 }
1962 }
1963 }
1964 env->lladdr = -1;
1965 if (!segv) {
1966 env->active_tc.PC += 4;
1967 }
1968 mmap_unlock();
1969 end_exclusive();
1970 return segv;
1971 }
1972
1973 void cpu_loop(CPUMIPSState *env)
1974 {
1975 target_siginfo_t info;
1976 int trapnr, ret;
1977 unsigned int syscall_num;
1978
1979 for(;;) {
1980 cpu_exec_start(env);
1981 trapnr = cpu_mips_exec(env);
1982 cpu_exec_end(env);
1983 switch(trapnr) {
1984 case EXCP_SYSCALL:
1985 syscall_num = env->active_tc.gpr[2] - 4000;
1986 env->active_tc.PC += 4;
1987 if (syscall_num >= sizeof(mips_syscall_args)) {
1988 ret = -ENOSYS;
1989 } else {
1990 int nb_args;
1991 abi_ulong sp_reg;
1992 abi_ulong arg5 = 0, arg6 = 0, arg7 = 0, arg8 = 0;
1993
1994 nb_args = mips_syscall_args[syscall_num];
1995 sp_reg = env->active_tc.gpr[29];
1996 switch (nb_args) {
1997 /* these arguments are taken from the stack */
1998 /* FIXME - what to do if get_user() fails? */
1999 case 8: get_user_ual(arg8, sp_reg + 28);
2000 case 7: get_user_ual(arg7, sp_reg + 24);
2001 case 6: get_user_ual(arg6, sp_reg + 20);
2002 case 5: get_user_ual(arg5, sp_reg + 16);
2003 default:
2004 break;
2005 }
2006 ret = do_syscall(env, env->active_tc.gpr[2],
2007 env->active_tc.gpr[4],
2008 env->active_tc.gpr[5],
2009 env->active_tc.gpr[6],
2010 env->active_tc.gpr[7],
2011 arg5, arg6/*, arg7, arg8*/);
2012 }
2013 if (ret == -TARGET_QEMU_ESIGRETURN) {
2014 /* Returning from a successful sigreturn syscall.
2015 Avoid clobbering register state. */
2016 break;
2017 }
2018 if ((unsigned int)ret >= (unsigned int)(-1133)) {
2019 env->active_tc.gpr[7] = 1; /* error flag */
2020 ret = -ret;
2021 } else {
2022 env->active_tc.gpr[7] = 0; /* error flag */
2023 }
2024 env->active_tc.gpr[2] = ret;
2025 break;
2026 case EXCP_TLBL:
2027 case EXCP_TLBS:
2028 info.si_signo = TARGET_SIGSEGV;
2029 info.si_errno = 0;
2030 /* XXX: check env->error_code */
2031 info.si_code = TARGET_SEGV_MAPERR;
2032 info._sifields._sigfault._addr = env->CP0_BadVAddr;
2033 queue_signal(env, info.si_signo, &info);
2034 break;
2035 case EXCP_CpU:
2036 case EXCP_RI:
2037 info.si_signo = TARGET_SIGILL;
2038 info.si_errno = 0;
2039 info.si_code = 0;
2040 queue_signal(env, info.si_signo, &info);
2041 break;
2042 case EXCP_INTERRUPT:
2043 /* just indicate that signals should be handled asap */
2044 break;
2045 case EXCP_DEBUG:
2046 {
2047 int sig;
2048
2049 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2050 if (sig)
2051 {
2052 info.si_signo = sig;
2053 info.si_errno = 0;
2054 info.si_code = TARGET_TRAP_BRKPT;
2055 queue_signal(env, info.si_signo, &info);
2056 }
2057 }
2058 break;
2059 case EXCP_SC:
2060 if (do_store_exclusive(env)) {
2061 info.si_signo = TARGET_SIGSEGV;
2062 info.si_errno = 0;
2063 info.si_code = TARGET_SEGV_MAPERR;
2064 info._sifields._sigfault._addr = env->active_tc.PC;
2065 queue_signal(env, info.si_signo, &info);
2066 }
2067 break;
2068 default:
2069 // error:
2070 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
2071 trapnr);
2072 cpu_dump_state(env, stderr, fprintf, 0);
2073 abort();
2074 }
2075 process_pending_signals(env);
2076 }
2077 }
2078 #endif
2079
2080 #ifdef TARGET_SH4
2081 void cpu_loop (CPUState *env)
2082 {
2083 int trapnr, ret;
2084 target_siginfo_t info;
2085
2086 while (1) {
2087 trapnr = cpu_sh4_exec (env);
2088
2089 switch (trapnr) {
2090 case 0x160:
2091 env->pc += 2;
2092 ret = do_syscall(env,
2093 env->gregs[3],
2094 env->gregs[4],
2095 env->gregs[5],
2096 env->gregs[6],
2097 env->gregs[7],
2098 env->gregs[0],
2099 env->gregs[1]);
2100 env->gregs[0] = ret;
2101 break;
2102 case EXCP_INTERRUPT:
2103 /* just indicate that signals should be handled asap */
2104 break;
2105 case EXCP_DEBUG:
2106 {
2107 int sig;
2108
2109 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2110 if (sig)
2111 {
2112 info.si_signo = sig;
2113 info.si_errno = 0;
2114 info.si_code = TARGET_TRAP_BRKPT;
2115 queue_signal(env, info.si_signo, &info);
2116 }
2117 }
2118 break;
2119 case 0xa0:
2120 case 0xc0:
2121 info.si_signo = SIGSEGV;
2122 info.si_errno = 0;
2123 info.si_code = TARGET_SEGV_MAPERR;
2124 info._sifields._sigfault._addr = env->tea;
2125 queue_signal(env, info.si_signo, &info);
2126 break;
2127
2128 default:
2129 printf ("Unhandled trap: 0x%x\n", trapnr);
2130 cpu_dump_state(env, stderr, fprintf, 0);
2131 exit (1);
2132 }
2133 process_pending_signals (env);
2134 }
2135 }
2136 #endif
2137
2138 #ifdef TARGET_CRIS
2139 void cpu_loop (CPUState *env)
2140 {
2141 int trapnr, ret;
2142 target_siginfo_t info;
2143
2144 while (1) {
2145 trapnr = cpu_cris_exec (env);
2146 switch (trapnr) {
2147 case 0xaa:
2148 {
2149 info.si_signo = SIGSEGV;
2150 info.si_errno = 0;
2151 /* XXX: check env->error_code */
2152 info.si_code = TARGET_SEGV_MAPERR;
2153 info._sifields._sigfault._addr = env->pregs[PR_EDA];
2154 queue_signal(env, info.si_signo, &info);
2155 }
2156 break;
2157 case EXCP_INTERRUPT:
2158 /* just indicate that signals should be handled asap */
2159 break;
2160 case EXCP_BREAK:
2161 ret = do_syscall(env,
2162 env->regs[9],
2163 env->regs[10],
2164 env->regs[11],
2165 env->regs[12],
2166 env->regs[13],
2167 env->pregs[7],
2168 env->pregs[11]);
2169 env->regs[10] = ret;
2170 break;
2171 case EXCP_DEBUG:
2172 {
2173 int sig;
2174
2175 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2176 if (sig)
2177 {
2178 info.si_signo = sig;
2179 info.si_errno = 0;
2180 info.si_code = TARGET_TRAP_BRKPT;
2181 queue_signal(env, info.si_signo, &info);
2182 }
2183 }
2184 break;
2185 default:
2186 printf ("Unhandled trap: 0x%x\n", trapnr);
2187 cpu_dump_state(env, stderr, fprintf, 0);
2188 exit (1);
2189 }
2190 process_pending_signals (env);
2191 }
2192 }
2193 #endif
2194
2195 #ifdef TARGET_MICROBLAZE
2196 void cpu_loop (CPUState *env)
2197 {
2198 int trapnr, ret;
2199 target_siginfo_t info;
2200
2201 while (1) {
2202 trapnr = cpu_mb_exec (env);
2203 switch (trapnr) {
2204 case 0xaa:
2205 {
2206 info.si_signo = SIGSEGV;
2207 info.si_errno = 0;
2208 /* XXX: check env->error_code */
2209 info.si_code = TARGET_SEGV_MAPERR;
2210 info._sifields._sigfault._addr = 0;
2211 queue_signal(env, info.si_signo, &info);
2212 }
2213 break;
2214 case EXCP_INTERRUPT:
2215 /* just indicate that signals should be handled asap */
2216 break;
2217 case EXCP_BREAK:
2218 /* Return address is 4 bytes after the call. */
2219 env->regs[14] += 4;
2220 ret = do_syscall(env,
2221 env->regs[12],
2222 env->regs[5],
2223 env->regs[6],
2224 env->regs[7],
2225 env->regs[8],
2226 env->regs[9],
2227 env->regs[10]);
2228 env->regs[3] = ret;
2229 env->sregs[SR_PC] = env->regs[14];
2230 break;
2231 case EXCP_DEBUG:
2232 {
2233 int sig;
2234
2235 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2236 if (sig)
2237 {
2238 info.si_signo = sig;
2239 info.si_errno = 0;
2240 info.si_code = TARGET_TRAP_BRKPT;
2241 queue_signal(env, info.si_signo, &info);
2242 }
2243 }
2244 break;
2245 default:
2246 printf ("Unhandled trap: 0x%x\n", trapnr);
2247 cpu_dump_state(env, stderr, fprintf, 0);
2248 exit (1);
2249 }
2250 process_pending_signals (env);
2251 }
2252 }
2253 #endif
2254
2255 #ifdef TARGET_M68K
2256
2257 void cpu_loop(CPUM68KState *env)
2258 {
2259 int trapnr;
2260 unsigned int n;
2261 target_siginfo_t info;
2262 TaskState *ts = env->opaque;
2263
2264 for(;;) {
2265 trapnr = cpu_m68k_exec(env);
2266 switch(trapnr) {
2267 case EXCP_ILLEGAL:
2268 {
2269 if (ts->sim_syscalls) {
2270 uint16_t nr;
2271 nr = lduw(env->pc + 2);
2272 env->pc += 4;
2273 do_m68k_simcall(env, nr);
2274 } else {
2275 goto do_sigill;
2276 }
2277 }
2278 break;
2279 case EXCP_HALT_INSN:
2280 /* Semihosing syscall. */
2281 env->pc += 4;
2282 do_m68k_semihosting(env, env->dregs[0]);
2283 break;
2284 case EXCP_LINEA:
2285 case EXCP_LINEF:
2286 case EXCP_UNSUPPORTED:
2287 do_sigill:
2288 info.si_signo = SIGILL;
2289 info.si_errno = 0;
2290 info.si_code = TARGET_ILL_ILLOPN;
2291 info._sifields._sigfault._addr = env->pc;
2292 queue_signal(env, info.si_signo, &info);
2293 break;
2294 case EXCP_TRAP0:
2295 {
2296 ts->sim_syscalls = 0;
2297 n = env->dregs[0];
2298 env->pc += 2;
2299 env->dregs[0] = do_syscall(env,
2300 n,
2301 env->dregs[1],
2302 env->dregs[2],
2303 env->dregs[3],
2304 env->dregs[4],
2305 env->dregs[5],
2306 env->aregs[0]);
2307 }
2308 break;
2309 case EXCP_INTERRUPT:
2310 /* just indicate that signals should be handled asap */
2311 break;
2312 case EXCP_ACCESS:
2313 {
2314 info.si_signo = SIGSEGV;
2315 info.si_errno = 0;
2316 /* XXX: check env->error_code */
2317 info.si_code = TARGET_SEGV_MAPERR;
2318 info._sifields._sigfault._addr = env->mmu.ar;
2319 queue_signal(env, info.si_signo, &info);
2320 }
2321 break;
2322 case EXCP_DEBUG:
2323 {
2324 int sig;
2325
2326 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2327 if (sig)
2328 {
2329 info.si_signo = sig;
2330 info.si_errno = 0;
2331 info.si_code = TARGET_TRAP_BRKPT;
2332 queue_signal(env, info.si_signo, &info);
2333 }
2334 }
2335 break;
2336 default:
2337 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
2338 trapnr);
2339 cpu_dump_state(env, stderr, fprintf, 0);
2340 abort();
2341 }
2342 process_pending_signals(env);
2343 }
2344 }
2345 #endif /* TARGET_M68K */
2346
2347 #ifdef TARGET_ALPHA
2348 void cpu_loop (CPUState *env)
2349 {
2350 int trapnr;
2351 target_siginfo_t info;
2352
2353 while (1) {
2354 trapnr = cpu_alpha_exec (env);
2355
2356 switch (trapnr) {
2357 case EXCP_RESET:
2358 fprintf(stderr, "Reset requested. Exit\n");
2359 exit(1);
2360 break;
2361 case EXCP_MCHK:
2362 fprintf(stderr, "Machine check exception. Exit\n");
2363 exit(1);
2364 break;
2365 case EXCP_ARITH:
2366 fprintf(stderr, "Arithmetic trap.\n");
2367 exit(1);
2368 break;
2369 case EXCP_HW_INTERRUPT:
2370 fprintf(stderr, "External interrupt. Exit\n");
2371 exit(1);
2372 break;
2373 case EXCP_DFAULT:
2374 fprintf(stderr, "MMU data fault\n");
2375 exit(1);
2376 break;
2377 case EXCP_DTB_MISS_PAL:
2378 fprintf(stderr, "MMU data TLB miss in PALcode\n");
2379 exit(1);
2380 break;
2381 case EXCP_ITB_MISS:
2382 fprintf(stderr, "MMU instruction TLB miss\n");
2383 exit(1);
2384 break;
2385 case EXCP_ITB_ACV:
2386 fprintf(stderr, "MMU instruction access violation\n");
2387 exit(1);
2388 break;
2389 case EXCP_DTB_MISS_NATIVE:
2390 fprintf(stderr, "MMU data TLB miss\n");
2391 exit(1);
2392 break;
2393 case EXCP_UNALIGN:
2394 fprintf(stderr, "Unaligned access\n");
2395 exit(1);
2396 break;
2397 case EXCP_OPCDEC:
2398 fprintf(stderr, "Invalid instruction\n");
2399 exit(1);
2400 break;
2401 case EXCP_FEN:
2402 fprintf(stderr, "Floating-point not allowed\n");
2403 exit(1);
2404 break;
2405 case EXCP_CALL_PAL ... (EXCP_CALL_PALP - 1):
2406 call_pal(env, (trapnr >> 6) | 0x80);
2407 break;
2408 case EXCP_CALL_PALP ... (EXCP_CALL_PALE - 1):
2409 fprintf(stderr, "Privileged call to PALcode\n");
2410 exit(1);
2411 break;
2412 case EXCP_DEBUG:
2413 {
2414 int sig;
2415
2416 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2417 if (sig)
2418 {
2419 info.si_signo = sig;
2420 info.si_errno = 0;
2421 info.si_code = TARGET_TRAP_BRKPT;
2422 queue_signal(env, info.si_signo, &info);
2423 }
2424 }
2425 break;
2426 default:
2427 printf ("Unhandled trap: 0x%x\n", trapnr);
2428 cpu_dump_state(env, stderr, fprintf, 0);
2429 exit (1);
2430 }
2431 process_pending_signals (env);
2432 }
2433 }
2434 #endif /* TARGET_ALPHA */
2435
2436 static void usage(void)
2437 {
2438 printf("qemu-" TARGET_ARCH " version " QEMU_VERSION QEMU_PKGVERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n"
2439 "usage: qemu-" TARGET_ARCH " [options] program [arguments...]\n"
2440 "Linux CPU emulator (compiled for %s emulation)\n"
2441 "\n"
2442 "Standard options:\n"
2443 "-h print this help\n"
2444 "-g port wait gdb connection to port\n"
2445 "-L path set the elf interpreter prefix (default=%s)\n"
2446 "-s size set the stack size in bytes (default=%ld)\n"
2447 "-cpu model select CPU (-cpu ? for list)\n"
2448 "-drop-ld-preload drop LD_PRELOAD for target process\n"
2449 "-E var=value sets/modifies targets environment variable(s)\n"
2450 "-U var unsets targets environment variable(s)\n"
2451 "-0 argv0 forces target process argv[0] to be argv0\n"
2452 #if defined(CONFIG_USE_GUEST_BASE)
2453 "-B address set guest_base address to address\n"
2454 #endif
2455 "\n"
2456 "Debug options:\n"
2457 "-d options activate log (logfile=%s)\n"
2458 "-p pagesize set the host page size to 'pagesize'\n"
2459 "-singlestep always run in singlestep mode\n"
2460 "-strace log system calls\n"
2461 "\n"
2462 "Environment variables:\n"
2463 "QEMU_STRACE Print system calls and arguments similar to the\n"
2464 " 'strace' program. Enable by setting to any value.\n"
2465 "You can use -E and -U options to set/unset environment variables\n"
2466 "for target process. It is possible to provide several variables\n"
2467 "by repeating the option. For example:\n"
2468 " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
2469 "Note that if you provide several changes to single variable\n"
2470 "last change will stay in effect.\n"
2471 ,
2472 TARGET_ARCH,
2473 interp_prefix,
2474 x86_stack_size,
2475 DEBUG_LOGFILE);
2476 exit(1);
2477 }
2478
2479 THREAD CPUState *thread_env;
2480
2481 void task_settid(TaskState *ts)
2482 {
2483 if (ts->ts_tid == 0) {
2484 #ifdef CONFIG_USE_NPTL
2485 ts->ts_tid = (pid_t)syscall(SYS_gettid);
2486 #else
2487 /* when no threads are used, tid becomes pid */
2488 ts->ts_tid = getpid();
2489 #endif
2490 }
2491 }
2492
2493 void stop_all_tasks(void)
2494 {
2495 /*
2496 * We trust that when using NPTL, start_exclusive()
2497 * handles thread stopping correctly.
2498 */
2499 start_exclusive();
2500 }
2501
2502 /* Assumes contents are already zeroed. */
2503 void init_task_state(TaskState *ts)
2504 {
2505 int i;
2506
2507 ts->used = 1;
2508 ts->first_free = ts->sigqueue_table;
2509 for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) {
2510 ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1];
2511 }
2512 ts->sigqueue_table[i].next = NULL;
2513 }
2514
2515 int main(int argc, char **argv, char **envp)
2516 {
2517 const char *filename;
2518 const char *cpu_model;
2519 struct target_pt_regs regs1, *regs = &regs1;
2520 struct image_info info1, *info = &info1;
2521 struct linux_binprm bprm;
2522 TaskState ts1, *ts = &ts1;
2523 CPUState *env;
2524 int optind;
2525 const char *r;
2526 int gdbstub_port = 0;
2527 char **target_environ, **wrk;
2528 char **target_argv;
2529 int target_argc;
2530 envlist_t *envlist = NULL;
2531 const char *argv0 = NULL;
2532 int i;
2533 int ret;
2534
2535 if (argc <= 1)
2536 usage();
2537
2538 qemu_cache_utils_init(envp);
2539
2540 /* init debug */
2541 cpu_set_log_filename(DEBUG_LOGFILE);
2542
2543 if ((envlist = envlist_create()) == NULL) {
2544 (void) fprintf(stderr, "Unable to allocate envlist\n");
2545 exit(1);
2546 }
2547
2548 /* add current environment into the list */
2549 for (wrk = environ; *wrk != NULL; wrk++) {
2550 (void) envlist_setenv(envlist, *wrk);
2551 }
2552
2553 cpu_model = NULL;
2554 optind = 1;
2555 for(;;) {
2556 if (optind >= argc)
2557 break;
2558 r = argv[optind];
2559 if (r[0] != '-')
2560 break;
2561 optind++;
2562 r++;
2563 if (!strcmp(r, "-")) {
2564 break;
2565 } else if (!strcmp(r, "d")) {
2566 int mask;
2567 const CPULogItem *item;
2568
2569 if (optind >= argc)
2570 break;
2571
2572 r = argv[optind++];
2573 mask = cpu_str_to_log_mask(r);
2574 if (!mask) {
2575 printf("Log items (comma separated):\n");
2576 for(item = cpu_log_items; item->mask != 0; item++) {
2577 printf("%-10s %s\n", item->name, item->help);
2578 }
2579 exit(1);
2580 }
2581 cpu_set_log(mask);
2582 } else if (!strcmp(r, "E")) {
2583 r = argv[optind++];
2584 if (envlist_setenv(envlist, r) != 0)
2585 usage();
2586 } else if (!strcmp(r, "U")) {
2587 r = argv[optind++];
2588 if (envlist_unsetenv(envlist, r) != 0)
2589 usage();
2590 } else if (!strcmp(r, "0")) {
2591 r = argv[optind++];
2592 argv0 = r;
2593 } else if (!strcmp(r, "s")) {
2594 if (optind >= argc)
2595 break;
2596 r = argv[optind++];
2597 x86_stack_size = strtol(r, (char **)&r, 0);
2598 if (x86_stack_size <= 0)
2599 usage();
2600 if (*r == 'M')
2601 x86_stack_size *= 1024 * 1024;
2602 else if (*r == 'k' || *r == 'K')
2603 x86_stack_size *= 1024;
2604 } else if (!strcmp(r, "L")) {
2605 interp_prefix = argv[optind++];
2606 } else if (!strcmp(r, "p")) {
2607 if (optind >= argc)
2608 break;
2609 qemu_host_page_size = atoi(argv[optind++]);
2610 if (qemu_host_page_size == 0 ||
2611 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
2612 fprintf(stderr, "page size must be a power of two\n");
2613 exit(1);
2614 }
2615 } else if (!strcmp(r, "g")) {
2616 if (optind >= argc)
2617 break;
2618 gdbstub_port = atoi(argv[optind++]);
2619 } else if (!strcmp(r, "r")) {
2620 qemu_uname_release = argv[optind++];
2621 } else if (!strcmp(r, "cpu")) {
2622 cpu_model = argv[optind++];
2623 if (cpu_model == NULL || strcmp(cpu_model, "?") == 0) {
2624 /* XXX: implement xxx_cpu_list for targets that still miss it */
2625 #if defined(cpu_list)
2626 cpu_list(stdout, &fprintf);
2627 #endif
2628 exit(1);
2629 }
2630 #if defined(CONFIG_USE_GUEST_BASE)
2631 } else if (!strcmp(r, "B")) {
2632 guest_base = strtol(argv[optind++], NULL, 0);
2633 have_guest_base = 1;
2634 #endif
2635 } else if (!strcmp(r, "drop-ld-preload")) {
2636 (void) envlist_unsetenv(envlist, "LD_PRELOAD");
2637 } else if (!strcmp(r, "singlestep")) {
2638 singlestep = 1;
2639 } else if (!strcmp(r, "strace")) {
2640 do_strace = 1;
2641 } else
2642 {
2643 usage();
2644 }
2645 }
2646 if (optind >= argc)
2647 usage();
2648 filename = argv[optind];
2649 exec_path = argv[optind];
2650
2651 /* Zero out regs */
2652 memset(regs, 0, sizeof(struct target_pt_regs));
2653
2654 /* Zero out image_info */
2655 memset(info, 0, sizeof(struct image_info));
2656
2657 memset(&bprm, 0, sizeof (bprm));
2658
2659 /* Scan interp_prefix dir for replacement files. */
2660 init_paths(interp_prefix);
2661
2662 if (cpu_model == NULL) {
2663 #if defined(TARGET_I386)
2664 #ifdef TARGET_X86_64
2665 cpu_model = "qemu64";
2666 #else
2667 cpu_model = "qemu32";
2668 #endif
2669 #elif defined(TARGET_ARM)
2670 cpu_model = "any";
2671 #elif defined(TARGET_M68K)
2672 cpu_model = "any";
2673 #elif defined(TARGET_SPARC)
2674 #ifdef TARGET_SPARC64
2675 cpu_model = "TI UltraSparc II";
2676 #else
2677 cpu_model = "Fujitsu MB86904";
2678 #endif
2679 #elif defined(TARGET_MIPS)
2680 #if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64)
2681 cpu_model = "20Kc";
2682 #else
2683 cpu_model = "24Kf";
2684 #endif
2685 #elif defined(TARGET_PPC)
2686 #ifdef TARGET_PPC64
2687 cpu_model = "970";
2688 #else
2689 cpu_model = "750";
2690 #endif
2691 #else
2692 cpu_model = "any";
2693 #endif
2694 }
2695 cpu_exec_init_all(0);
2696 /* NOTE: we need to init the CPU at this stage to get
2697 qemu_host_page_size */
2698 env = cpu_init(cpu_model);
2699 if (!env) {
2700 fprintf(stderr, "Unable to find CPU definition\n");
2701 exit(1);
2702 }
2703 #if defined(TARGET_I386) || defined(TARGET_SPARC) || defined(TARGET_PPC)
2704 cpu_reset(env);
2705 #endif
2706
2707 thread_env = env;
2708
2709 if (getenv("QEMU_STRACE")) {
2710 do_strace = 1;
2711 }
2712
2713 target_environ = envlist_to_environ(envlist, NULL);
2714 envlist_free(envlist);
2715
2716 #if defined(CONFIG_USE_GUEST_BASE)
2717 /*
2718 * Now that page sizes are configured in cpu_init() we can do
2719 * proper page alignment for guest_base.
2720 */
2721 guest_base = HOST_PAGE_ALIGN(guest_base);
2722
2723 /*
2724 * Read in mmap_min_addr kernel parameter. This value is used
2725 * When loading the ELF image to determine whether guest_base
2726 * is needed.
2727 *
2728 * When user has explicitly set the quest base, we skip this
2729 * test.
2730 */
2731 if (!have_guest_base) {
2732 FILE *fp;
2733
2734 if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) {
2735 unsigned long tmp;
2736 if (fscanf(fp, "%lu", &tmp) == 1) {
2737 mmap_min_addr = tmp;
2738 qemu_log("host mmap_min_addr=0x%lx\n", mmap_min_addr);
2739 }
2740 fclose(fp);
2741 }
2742 }
2743 #endif /* CONFIG_USE_GUEST_BASE */
2744
2745 /*
2746 * Prepare copy of argv vector for target.
2747 */
2748 target_argc = argc - optind;
2749 target_argv = calloc(target_argc + 1, sizeof (char *));
2750 if (target_argv == NULL) {
2751 (void) fprintf(stderr, "Unable to allocate memory for target_argv\n");
2752 exit(1);
2753 }
2754
2755 /*
2756 * If argv0 is specified (using '-0' switch) we replace
2757 * argv[0] pointer with the given one.
2758 */
2759 i = 0;
2760 if (argv0 != NULL) {
2761 target_argv[i++] = strdup(argv0);
2762 }
2763 for (; i < target_argc; i++) {
2764 target_argv[i] = strdup(argv[optind + i]);
2765 }
2766 target_argv[target_argc] = NULL;
2767
2768 memset(ts, 0, sizeof(TaskState));
2769 init_task_state(ts);
2770 /* build Task State */
2771 ts->info = info;
2772 ts->bprm = &bprm;
2773 env->opaque = ts;
2774 task_settid(ts);
2775
2776 ret = loader_exec(filename, target_argv, target_environ, regs,
2777 info, &bprm);
2778 if (ret != 0) {
2779 printf("Error %d while loading %s\n", ret, filename);
2780 _exit(1);
2781 }
2782
2783 for (i = 0; i < target_argc; i++) {
2784 free(target_argv[i]);
2785 }
2786 free(target_argv);
2787
2788 for (wrk = target_environ; *wrk; wrk++) {
2789 free(*wrk);
2790 }
2791
2792 free(target_environ);
2793
2794 if (qemu_log_enabled()) {
2795 #if defined(CONFIG_USE_GUEST_BASE)
2796 qemu_log("guest_base 0x%lx\n", guest_base);
2797 #endif
2798 log_page_dump();
2799
2800 qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
2801 qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code);
2802 qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n",
2803 info->start_code);
2804 qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n",
2805 info->start_data);
2806 qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data);
2807 qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n",
2808 info->start_stack);
2809 qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
2810 qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
2811 }
2812
2813 target_set_brk(info->brk);
2814 syscall_init();
2815 signal_init();
2816
2817 #if defined(TARGET_I386)
2818 cpu_x86_set_cpl(env, 3);
2819
2820 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
2821 env->hflags |= HF_PE_MASK;
2822 if (env->cpuid_features & CPUID_SSE) {
2823 env->cr[4] |= CR4_OSFXSR_MASK;
2824 env->hflags |= HF_OSFXSR_MASK;
2825 }
2826 #ifndef TARGET_ABI32
2827 /* enable 64 bit mode if possible */
2828 if (!(env->cpuid_ext2_features & CPUID_EXT2_LM)) {
2829 fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
2830 exit(1);
2831 }
2832 env->cr[4] |= CR4_PAE_MASK;
2833 env->efer |= MSR_EFER_LMA | MSR_EFER_LME;
2834 env->hflags |= HF_LMA_MASK;
2835 #endif
2836
2837 /* flags setup : we activate the IRQs by default as in user mode */
2838 env->eflags |= IF_MASK;
2839
2840 /* linux register setup */
2841 #ifndef TARGET_ABI32
2842 env->regs[R_EAX] = regs->rax;
2843 env->regs[R_EBX] = regs->rbx;
2844 env->regs[R_ECX] = regs->rcx;
2845 env->regs[R_EDX] = regs->rdx;
2846 env->regs[R_ESI] = regs->rsi;
2847 env->regs[R_EDI] = regs->rdi;
2848 env->regs[R_EBP] = regs->rbp;
2849 env->regs[R_ESP] = regs->rsp;
2850 env->eip = regs->rip;
2851 #else
2852 env->regs[R_EAX] = regs->eax;
2853 env->regs[R_EBX] = regs->ebx;
2854 env->regs[R_ECX] = regs->ecx;
2855 env->regs[R_EDX] = regs->edx;
2856 env->regs[R_ESI] = regs->esi;
2857 env->regs[R_EDI] = regs->edi;
2858 env->regs[R_EBP] = regs->ebp;
2859 env->regs[R_ESP] = regs->esp;
2860 env->eip = regs->eip;
2861 #endif
2862
2863 /* linux interrupt setup */
2864 #ifndef TARGET_ABI32
2865 env->idt.limit = 511;
2866 #else
2867 env->idt.limit = 255;
2868 #endif
2869 env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1),
2870 PROT_READ|PROT_WRITE,
2871 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
2872 idt_table = g2h(env->idt.base);
2873 set_idt(0, 0);
2874 set_idt(1, 0);
2875 set_idt(2, 0);
2876 set_idt(3, 3);
2877 set_idt(4, 3);
2878 set_idt(5, 0);
2879 set_idt(6, 0);
2880 set_idt(7, 0);
2881 set_idt(8, 0);
2882 set_idt(9, 0);
2883 set_idt(10, 0);
2884 set_idt(11, 0);
2885 set_idt(12, 0);
2886 set_idt(13, 0);
2887 set_idt(14, 0);
2888 set_idt(15, 0);
2889 set_idt(16, 0);
2890 set_idt(17, 0);
2891 set_idt(18, 0);
2892 set_idt(19, 0);
2893 set_idt(0x80, 3);
2894
2895 /* linux segment setup */
2896 {
2897 uint64_t *gdt_table;
2898 env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES,
2899 PROT_READ|PROT_WRITE,
2900 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
2901 env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1;
2902 gdt_table = g2h(env->gdt.base);
2903 #ifdef TARGET_ABI32
2904 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
2905 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
2906 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
2907 #else
2908 /* 64 bit code segment */
2909 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
2910 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
2911 DESC_L_MASK |
2912 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
2913 #endif
2914 write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
2915 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
2916 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
2917 }
2918 cpu_x86_load_seg(env, R_CS, __USER_CS);
2919 cpu_x86_load_seg(env, R_SS, __USER_DS);
2920 #ifdef TARGET_ABI32
2921 cpu_x86_load_seg(env, R_DS, __USER_DS);
2922 cpu_x86_load_seg(env, R_ES, __USER_DS);
2923 cpu_x86_load_seg(env, R_FS, __USER_DS);
2924 cpu_x86_load_seg(env, R_GS, __USER_DS);
2925 /* This hack makes Wine work... */
2926 env->segs[R_FS].selector = 0;
2927 #else
2928 cpu_x86_load_seg(env, R_DS, 0);
2929 cpu_x86_load_seg(env, R_ES, 0);
2930 cpu_x86_load_seg(env, R_FS, 0);
2931 cpu_x86_load_seg(env, R_GS, 0);
2932 #endif
2933 #elif defined(TARGET_ARM)
2934 {
2935 int i;
2936 cpsr_write(env, regs->uregs[16], 0xffffffff);
2937 for(i = 0; i < 16; i++) {
2938 env->regs[i] = regs->uregs[i];
2939 }
2940 }
2941 #elif defined(TARGET_SPARC)
2942 {
2943 int i;
2944 env->pc = regs->pc;
2945 env->npc = regs->npc;
2946 env->y = regs->y;
2947 for(i = 0; i < 8; i++)
2948 env->gregs[i] = regs->u_regs[i];
2949 for(i = 0; i < 8; i++)
2950 env->regwptr[i] = regs->u_regs[i + 8];
2951 }
2952 #elif defined(TARGET_PPC)
2953 {
2954 int i;
2955
2956 #if defined(TARGET_PPC64)
2957 #if defined(TARGET_ABI32)
2958 env->msr &= ~((target_ulong)1 << MSR_SF);
2959 #else
2960 env->msr |= (target_ulong)1 << MSR_SF;
2961 #endif
2962 #endif
2963 env->nip = regs->nip;
2964 for(i = 0; i < 32; i++) {
2965 env->gpr[i] = regs->gpr[i];
2966 }
2967 }
2968 #elif defined(TARGET_M68K)
2969 {
2970 env->pc = regs->pc;
2971 env->dregs[0] = regs->d0;
2972 env->dregs[1] = regs->d1;
2973 env->dregs[2] = regs->d2;
2974 env->dregs[3] = regs->d3;
2975 env->dregs[4] = regs->d4;
2976 env->dregs[5] = regs->d5;
2977 env->dregs[6] = regs->d6;
2978 env->dregs[7] = regs->d7;
2979 env->aregs[0] = regs->a0;
2980 env->aregs[1] = regs->a1;
2981 env->aregs[2] = regs->a2;
2982 env->aregs[3] = regs->a3;
2983 env->aregs[4] = regs->a4;
2984 env->aregs[5] = regs->a5;
2985 env->aregs[6] = regs->a6;
2986 env->aregs[7] = regs->usp;
2987 env->sr = regs->sr;
2988 ts->sim_syscalls = 1;
2989 }
2990 #elif defined(TARGET_MICROBLAZE)
2991 {
2992 env->regs[0] = regs->r0;
2993 env->regs[1] = regs->r1;
2994 env->regs[2] = regs->r2;
2995 env->regs[3] = regs->r3;
2996 env->regs[4] = regs->r4;
2997 env->regs[5] = regs->r5;
2998 env->regs[6] = regs->r6;
2999 env->regs[7] = regs->r7;
3000 env->regs[8] = regs->r8;
3001 env->regs[9] = regs->r9;
3002 env->regs[10] = regs->r10;
3003 env->regs[11] = regs->r11;
3004 env->regs[12] = regs->r12;
3005 env->regs[13] = regs->r13;
3006 env->regs[14] = regs->r14;
3007 env->regs[15] = regs->r15;
3008 env->regs[16] = regs->r16;
3009 env->regs[17] = regs->r17;
3010 env->regs[18] = regs->r18;
3011 env->regs[19] = regs->r19;
3012 env->regs[20] = regs->r20;
3013 env->regs[21] = regs->r21;
3014 env->regs[22] = regs->r22;
3015 env->regs[23] = regs->r23;
3016 env->regs[24] = regs->r24;
3017 env->regs[25] = regs->r25;
3018 env->regs[26] = regs->r26;
3019 env->regs[27] = regs->r27;
3020 env->regs[28] = regs->r28;
3021 env->regs[29] = regs->r29;
3022 env->regs[30] = regs->r30;
3023 env->regs[31] = regs->r31;
3024 env->sregs[SR_PC] = regs->pc;
3025 }
3026 #elif defined(TARGET_MIPS)
3027 {
3028 int i;
3029
3030 for(i = 0; i < 32; i++) {
3031 env->active_tc.gpr[i] = regs->regs[i];
3032 }
3033 env->active_tc.PC = regs->cp0_epc;
3034 }
3035 #elif defined(TARGET_SH4)
3036 {
3037 int i;
3038
3039 for(i = 0; i < 16; i++) {
3040 env->gregs[i] = regs->regs[i];
3041 }
3042 env->pc = regs->pc;
3043 }
3044 #elif defined(TARGET_ALPHA)
3045 {
3046 int i;
3047
3048 for(i = 0; i < 28; i++) {
3049 env->ir[i] = ((abi_ulong *)regs)[i];
3050 }
3051 env->ipr[IPR_USP] = regs->usp;
3052 env->ir[30] = regs->usp;
3053 env->pc = regs->pc;
3054 env->unique = regs->unique;
3055 }
3056 #elif defined(TARGET_CRIS)
3057 {
3058 env->regs[0] = regs->r0;
3059 env->regs[1] = regs->r1;
3060 env->regs[2] = regs->r2;
3061 env->regs[3] = regs->r3;
3062 env->regs[4] = regs->r4;
3063 env->regs[5] = regs->r5;
3064 env->regs[6] = regs->r6;
3065 env->regs[7] = regs->r7;
3066 env->regs[8] = regs->r8;
3067 env->regs[9] = regs->r9;
3068 env->regs[10] = regs->r10;
3069 env->regs[11] = regs->r11;
3070 env->regs[12] = regs->r12;
3071 env->regs[13] = regs->r13;
3072 env->regs[14] = info->start_stack;
3073 env->regs[15] = regs->acr;
3074 env->pc = regs->erp;
3075 }
3076 #else
3077 #error unsupported target CPU
3078 #endif
3079
3080 #if defined(TARGET_ARM) || defined(TARGET_M68K)
3081 ts->stack_base = info->start_stack;
3082 ts->heap_base = info->brk;
3083 /* This will be filled in on the first SYS_HEAPINFO call. */
3084 ts->heap_limit = 0;
3085 #endif
3086
3087 if (gdbstub_port) {
3088 gdbserver_start (gdbstub_port);
3089 gdb_handlesig(env, 0);
3090 }
3091 cpu_loop(env);
3092 /* never exits */
3093 return 0;
3094 }
QEmu