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multiboot: Prevent loading of x86_64 images
[qemu/mdroth.git] / linux-user / main.c
blobdbba8befe7448ae4f252100a3fd3f1c485ae8148
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 /* For tb_lock */
33 #include "exec-all.h"
34 #include "tcg.h"
35 #include "qemu-timer.h"
36 #include "envlist.h"
37
38 #define DEBUG_LOGFILE "/tmp/qemu.log"
39
40 char *exec_path;
41
42 int singlestep;
43 unsigned long mmap_min_addr;
44 #if defined(CONFIG_USE_GUEST_BASE)
45 unsigned long guest_base;
46 int have_guest_base;
47 unsigned long reserved_va;
48 #endif
49
50 static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
51 const char *qemu_uname_release = CONFIG_UNAME_RELEASE;
52
53 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
54 we allocate a bigger stack. Need a better solution, for example
55 by remapping the process stack directly at the right place */
56 unsigned long guest_stack_size = 8 * 1024 * 1024UL;
57
58 void gemu_log(const char *fmt, ...)
59 {
60 va_list ap;
61
62 va_start(ap, fmt);
63 vfprintf(stderr, fmt, ap);
64 va_end(ap);
65 }
66
67 #if defined(TARGET_I386)
68 int cpu_get_pic_interrupt(CPUState *env)
69 {
70 return -1;
71 }
72 #endif
73
74 /* timers for rdtsc */
75
76 #if 0
77
78 static uint64_t emu_time;
79
80 int64_t cpu_get_real_ticks(void)
81 {
82 return emu_time++;
83 }
84
85 #endif
86
87 #if defined(CONFIG_USE_NPTL)
88 /***********************************************************/
89 /* Helper routines for implementing atomic operations. */
90
91 /* To implement exclusive operations we force all cpus to syncronise.
92 We don't require a full sync, only that no cpus are executing guest code.
93 The alternative is to map target atomic ops onto host equivalents,
94 which requires quite a lot of per host/target work. */
95 static pthread_mutex_t cpu_list_mutex = PTHREAD_MUTEX_INITIALIZER;
96 static pthread_mutex_t exclusive_lock = PTHREAD_MUTEX_INITIALIZER;
97 static pthread_cond_t exclusive_cond = PTHREAD_COND_INITIALIZER;
98 static pthread_cond_t exclusive_resume = PTHREAD_COND_INITIALIZER;
99 static int pending_cpus;
100
101 /* Make sure everything is in a consistent state for calling fork(). */
102 void fork_start(void)
103 {
104 pthread_mutex_lock(&tb_lock);
105 pthread_mutex_lock(&exclusive_lock);
106 mmap_fork_start();
107 }
108
109 void fork_end(int child)
110 {
111 mmap_fork_end(child);
112 if (child) {
113 /* Child processes created by fork() only have a single thread.
114 Discard information about the parent threads. */
115 first_cpu = thread_env;
116 thread_env->next_cpu = NULL;
117 pending_cpus = 0;
118 pthread_mutex_init(&exclusive_lock, NULL);
119 pthread_mutex_init(&cpu_list_mutex, NULL);
120 pthread_cond_init(&exclusive_cond, NULL);
121 pthread_cond_init(&exclusive_resume, NULL);
122 pthread_mutex_init(&tb_lock, NULL);
123 gdbserver_fork(thread_env);
124 } else {
125 pthread_mutex_unlock(&exclusive_lock);
126 pthread_mutex_unlock(&tb_lock);
127 }
128 }
129
130 /* Wait for pending exclusive operations to complete. The exclusive lock
131 must be held. */
132 static inline void exclusive_idle(void)
133 {
134 while (pending_cpus) {
135 pthread_cond_wait(&exclusive_resume, &exclusive_lock);
136 }
137 }
138
139 /* Start an exclusive operation.
140 Must only be called from outside cpu_arm_exec. */
141 static inline void start_exclusive(void)
142 {
143 CPUState *other;
144 pthread_mutex_lock(&exclusive_lock);
145 exclusive_idle();
146
147 pending_cpus = 1;
148 /* Make all other cpus stop executing. */
149 for (other = first_cpu; other; other = other->next_cpu) {
150 if (other->running) {
151 pending_cpus++;
152 cpu_exit(other);
153 }
154 }
155 if (pending_cpus > 1) {
156 pthread_cond_wait(&exclusive_cond, &exclusive_lock);
157 }
158 }
159
160 /* Finish an exclusive operation. */
161 static inline void end_exclusive(void)
162 {
163 pending_cpus = 0;
164 pthread_cond_broadcast(&exclusive_resume);
165 pthread_mutex_unlock(&exclusive_lock);
166 }
167
168 /* Wait for exclusive ops to finish, and begin cpu execution. */
169 static inline void cpu_exec_start(CPUState *env)
170 {
171 pthread_mutex_lock(&exclusive_lock);
172 exclusive_idle();
173 env->running = 1;
174 pthread_mutex_unlock(&exclusive_lock);
175 }
176
177 /* Mark cpu as not executing, and release pending exclusive ops. */
178 static inline void cpu_exec_end(CPUState *env)
179 {
180 pthread_mutex_lock(&exclusive_lock);
181 env->running = 0;
182 if (pending_cpus > 1) {
183 pending_cpus--;
184 if (pending_cpus == 1) {
185 pthread_cond_signal(&exclusive_cond);
186 }
187 }
188 exclusive_idle();
189 pthread_mutex_unlock(&exclusive_lock);
190 }
191
192 void cpu_list_lock(void)
193 {
194 pthread_mutex_lock(&cpu_list_mutex);
195 }
196
197 void cpu_list_unlock(void)
198 {
199 pthread_mutex_unlock(&cpu_list_mutex);
200 }
201 #else /* if !CONFIG_USE_NPTL */
202 /* These are no-ops because we are not threadsafe. */
203 static inline void cpu_exec_start(CPUState *env)
204 {
205 }
206
207 static inline void cpu_exec_end(CPUState *env)
208 {
209 }
210
211 static inline void start_exclusive(void)
212 {
213 }
214
215 static inline void end_exclusive(void)
216 {
217 }
218
219 void fork_start(void)
220 {
221 }
222
223 void fork_end(int child)
224 {
225 if (child) {
226 gdbserver_fork(thread_env);
227 }
228 }
229
230 void cpu_list_lock(void)
231 {
232 }
233
234 void cpu_list_unlock(void)
235 {
236 }
237 #endif
238
239
240 #ifdef TARGET_I386
241 /***********************************************************/
242 /* CPUX86 core interface */
243
244 void cpu_smm_update(CPUState *env)
245 {
246 }
247
248 uint64_t cpu_get_tsc(CPUX86State *env)
249 {
250 return cpu_get_real_ticks();
251 }
252
253 static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
254 int flags)
255 {
256 unsigned int e1, e2;
257 uint32_t *p;
258 e1 = (addr << 16) | (limit & 0xffff);
259 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
260 e2 |= flags;
261 p = ptr;
262 p[0] = tswap32(e1);
263 p[1] = tswap32(e2);
264 }
265
266 static uint64_t *idt_table;
267 #ifdef TARGET_X86_64
268 static void set_gate64(void *ptr, unsigned int type, unsigned int dpl,
269 uint64_t addr, unsigned int sel)
270 {
271 uint32_t *p, e1, e2;
272 e1 = (addr & 0xffff) | (sel << 16);
273 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
274 p = ptr;
275 p[0] = tswap32(e1);
276 p[1] = tswap32(e2);
277 p[2] = tswap32(addr >> 32);
278 p[3] = 0;
279 }
280 /* only dpl matters as we do only user space emulation */
281 static void set_idt(int n, unsigned int dpl)
282 {
283 set_gate64(idt_table + n * 2, 0, dpl, 0, 0);
284 }
285 #else
286 static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
287 uint32_t addr, unsigned int sel)
288 {
289 uint32_t *p, e1, e2;
290 e1 = (addr & 0xffff) | (sel << 16);
291 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
292 p = ptr;
293 p[0] = tswap32(e1);
294 p[1] = tswap32(e2);
295 }
296
297 /* only dpl matters as we do only user space emulation */
298 static void set_idt(int n, unsigned int dpl)
299 {
300 set_gate(idt_table + n, 0, dpl, 0, 0);
301 }
302 #endif
303
304 void cpu_loop(CPUX86State *env)
305 {
306 int trapnr;
307 abi_ulong pc;
308 target_siginfo_t info;
309
310 for(;;) {
311 trapnr = cpu_x86_exec(env);
312 switch(trapnr) {
313 case 0x80:
314 /* linux syscall from int $0x80 */
315 env->regs[R_EAX] = do_syscall(env,
316 env->regs[R_EAX],
317 env->regs[R_EBX],
318 env->regs[R_ECX],
319 env->regs[R_EDX],
320 env->regs[R_ESI],
321 env->regs[R_EDI],
322 env->regs[R_EBP]);
323 break;
324 #ifndef TARGET_ABI32
325 case EXCP_SYSCALL:
326 /* linux syscall from syscall intruction */
327 env->regs[R_EAX] = do_syscall(env,
328 env->regs[R_EAX],
329 env->regs[R_EDI],
330 env->regs[R_ESI],
331 env->regs[R_EDX],
332 env->regs[10],
333 env->regs[8],
334 env->regs[9]);
335 env->eip = env->exception_next_eip;
336 break;
337 #endif
338 case EXCP0B_NOSEG:
339 case EXCP0C_STACK:
340 info.si_signo = SIGBUS;
341 info.si_errno = 0;
342 info.si_code = TARGET_SI_KERNEL;
343 info._sifields._sigfault._addr = 0;
344 queue_signal(env, info.si_signo, &info);
345 break;
346 case EXCP0D_GPF:
347 /* XXX: potential problem if ABI32 */
348 #ifndef TARGET_X86_64
349 if (env->eflags & VM_MASK) {
350 handle_vm86_fault(env);
351 } else
352 #endif
353 {
354 info.si_signo = SIGSEGV;
355 info.si_errno = 0;
356 info.si_code = TARGET_SI_KERNEL;
357 info._sifields._sigfault._addr = 0;
358 queue_signal(env, info.si_signo, &info);
359 }
360 break;
361 case EXCP0E_PAGE:
362 info.si_signo = SIGSEGV;
363 info.si_errno = 0;
364 if (!(env->error_code & 1))
365 info.si_code = TARGET_SEGV_MAPERR;
366 else
367 info.si_code = TARGET_SEGV_ACCERR;
368 info._sifields._sigfault._addr = env->cr[2];
369 queue_signal(env, info.si_signo, &info);
370 break;
371 case EXCP00_DIVZ:
372 #ifndef TARGET_X86_64
373 if (env->eflags & VM_MASK) {
374 handle_vm86_trap(env, trapnr);
375 } else
376 #endif
377 {
378 /* division by zero */
379 info.si_signo = SIGFPE;
380 info.si_errno = 0;
381 info.si_code = TARGET_FPE_INTDIV;
382 info._sifields._sigfault._addr = env->eip;
383 queue_signal(env, info.si_signo, &info);
384 }
385 break;
386 case EXCP01_DB:
387 case EXCP03_INT3:
388 #ifndef TARGET_X86_64
389 if (env->eflags & VM_MASK) {
390 handle_vm86_trap(env, trapnr);
391 } else
392 #endif
393 {
394 info.si_signo = SIGTRAP;
395 info.si_errno = 0;
396 if (trapnr == EXCP01_DB) {
397 info.si_code = TARGET_TRAP_BRKPT;
398 info._sifields._sigfault._addr = env->eip;
399 } else {
400 info.si_code = TARGET_SI_KERNEL;
401 info._sifields._sigfault._addr = 0;
402 }
403 queue_signal(env, info.si_signo, &info);
404 }
405 break;
406 case EXCP04_INTO:
407 case EXCP05_BOUND:
408 #ifndef TARGET_X86_64
409 if (env->eflags & VM_MASK) {
410 handle_vm86_trap(env, trapnr);
411 } else
412 #endif
413 {
414 info.si_signo = SIGSEGV;
415 info.si_errno = 0;
416 info.si_code = TARGET_SI_KERNEL;
417 info._sifields._sigfault._addr = 0;
418 queue_signal(env, info.si_signo, &info);
419 }
420 break;
421 case EXCP06_ILLOP:
422 info.si_signo = SIGILL;
423 info.si_errno = 0;
424 info.si_code = TARGET_ILL_ILLOPN;
425 info._sifields._sigfault._addr = env->eip;
426 queue_signal(env, info.si_signo, &info);
427 break;
428 case EXCP_INTERRUPT:
429 /* just indicate that signals should be handled asap */
430 break;
431 case EXCP_DEBUG:
432 {
433 int sig;
434
435 sig = gdb_handlesig (env, TARGET_SIGTRAP);
436 if (sig)
437 {
438 info.si_signo = sig;
439 info.si_errno = 0;
440 info.si_code = TARGET_TRAP_BRKPT;
441 queue_signal(env, info.si_signo, &info);
442 }
443 }
444 break;
445 default:
446 pc = env->segs[R_CS].base + env->eip;
447 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
448 (long)pc, trapnr);
449 abort();
450 }
451 process_pending_signals(env);
452 }
453 }
454 #endif
455
456 #ifdef TARGET_ARM
457
458 static void arm_cache_flush(abi_ulong start, abi_ulong last)
459 {
460 abi_ulong addr, last1;
461
462 if (last < start)
463 return;
464 addr = start;
465 for(;;) {
466 last1 = ((addr + TARGET_PAGE_SIZE) & TARGET_PAGE_MASK) - 1;
467 if (last1 > last)
468 last1 = last;
469 tb_invalidate_page_range(addr, last1 + 1);
470 if (last1 == last)
471 break;
472 addr = last1 + 1;
473 }
474 }
475
476 /* Handle a jump to the kernel code page. */
477 static int
478 do_kernel_trap(CPUARMState *env)
479 {
480 uint32_t addr;
481 uint32_t cpsr;
482 uint32_t val;
483
484 switch (env->regs[15]) {
485 case 0xffff0fa0: /* __kernel_memory_barrier */
486 /* ??? No-op. Will need to do better for SMP. */
487 break;
488 case 0xffff0fc0: /* __kernel_cmpxchg */
489 /* XXX: This only works between threads, not between processes.
490 It's probably possible to implement this with native host
491 operations. However things like ldrex/strex are much harder so
492 there's not much point trying. */
493 start_exclusive();
494 cpsr = cpsr_read(env);
495 addr = env->regs[2];
496 /* FIXME: This should SEGV if the access fails. */
497 if (get_user_u32(val, addr))
498 val = ~env->regs[0];
499 if (val == env->regs[0]) {
500 val = env->regs[1];
501 /* FIXME: Check for segfaults. */
502 put_user_u32(val, addr);
503 env->regs[0] = 0;
504 cpsr |= CPSR_C;
505 } else {
506 env->regs[0] = -1;
507 cpsr &= ~CPSR_C;
508 }
509 cpsr_write(env, cpsr, CPSR_C);
510 end_exclusive();
511 break;
512 case 0xffff0fe0: /* __kernel_get_tls */
513 env->regs[0] = env->cp15.c13_tls2;
514 break;
515 default:
516 return 1;
517 }
518 /* Jump back to the caller. */
519 addr = env->regs[14];
520 if (addr & 1) {
521 env->thumb = 1;
522 addr &= ~1;
523 }
524 env->regs[15] = addr;
525
526 return 0;
527 }
528
529 static int do_strex(CPUARMState *env)
530 {
531 uint32_t val;
532 int size;
533 int rc = 1;
534 int segv = 0;
535 uint32_t addr;
536 start_exclusive();
537 addr = env->exclusive_addr;
538 if (addr != env->exclusive_test) {
539 goto fail;
540 }
541 size = env->exclusive_info & 0xf;
542 switch (size) {
543 case 0:
544 segv = get_user_u8(val, addr);
545 break;
546 case 1:
547 segv = get_user_u16(val, addr);
548 break;
549 case 2:
550 case 3:
551 segv = get_user_u32(val, addr);
552 break;
553 default:
554 abort();
555 }
556 if (segv) {
557 env->cp15.c6_data = addr;
558 goto done;
559 }
560 if (val != env->exclusive_val) {
561 goto fail;
562 }
563 if (size == 3) {
564 segv = get_user_u32(val, addr + 4);
565 if (segv) {
566 env->cp15.c6_data = addr + 4;
567 goto done;
568 }
569 if (val != env->exclusive_high) {
570 goto fail;
571 }
572 }
573 val = env->regs[(env->exclusive_info >> 8) & 0xf];
574 switch (size) {
575 case 0:
576 segv = put_user_u8(val, addr);
577 break;
578 case 1:
579 segv = put_user_u16(val, addr);
580 break;
581 case 2:
582 case 3:
583 segv = put_user_u32(val, addr);
584 break;
585 }
586 if (segv) {
587 env->cp15.c6_data = addr;
588 goto done;
589 }
590 if (size == 3) {
591 val = env->regs[(env->exclusive_info >> 12) & 0xf];
592 segv = put_user_u32(val, addr);
593 if (segv) {
594 env->cp15.c6_data = addr + 4;
595 goto done;
596 }
597 }
598 rc = 0;
599 fail:
600 env->regs[15] += 4;
601 env->regs[(env->exclusive_info >> 4) & 0xf] = rc;
602 done:
603 end_exclusive();
604 return segv;
605 }
606
607 void cpu_loop(CPUARMState *env)
608 {
609 int trapnr;
610 unsigned int n, insn;
611 target_siginfo_t info;
612 uint32_t addr;
613
614 for(;;) {
615 cpu_exec_start(env);
616 trapnr = cpu_arm_exec(env);
617 cpu_exec_end(env);
618 switch(trapnr) {
619 case EXCP_UDEF:
620 {
621 TaskState *ts = env->opaque;
622 uint32_t opcode;
623 int rc;
624
625 /* we handle the FPU emulation here, as Linux */
626 /* we get the opcode */
627 /* FIXME - what to do if get_user() fails? */
628 get_user_u32(opcode, env->regs[15]);
629
630 rc = EmulateAll(opcode, &ts->fpa, env);
631 if (rc == 0) { /* illegal instruction */
632 info.si_signo = SIGILL;
633 info.si_errno = 0;
634 info.si_code = TARGET_ILL_ILLOPN;
635 info._sifields._sigfault._addr = env->regs[15];
636 queue_signal(env, info.si_signo, &info);
637 } else if (rc < 0) { /* FP exception */
638 int arm_fpe=0;
639
640 /* translate softfloat flags to FPSR flags */
641 if (-rc & float_flag_invalid)
642 arm_fpe |= BIT_IOC;
643 if (-rc & float_flag_divbyzero)
644 arm_fpe |= BIT_DZC;
645 if (-rc & float_flag_overflow)
646 arm_fpe |= BIT_OFC;
647 if (-rc & float_flag_underflow)
648 arm_fpe |= BIT_UFC;
649 if (-rc & float_flag_inexact)
650 arm_fpe |= BIT_IXC;
651
652 FPSR fpsr = ts->fpa.fpsr;
653 //printf("fpsr 0x%x, arm_fpe 0x%x\n",fpsr,arm_fpe);
654
655 if (fpsr & (arm_fpe << 16)) { /* exception enabled? */
656 info.si_signo = SIGFPE;
657 info.si_errno = 0;
658
659 /* ordered by priority, least first */
660 if (arm_fpe & BIT_IXC) info.si_code = TARGET_FPE_FLTRES;
661 if (arm_fpe & BIT_UFC) info.si_code = TARGET_FPE_FLTUND;
662 if (arm_fpe & BIT_OFC) info.si_code = TARGET_FPE_FLTOVF;
663 if (arm_fpe & BIT_DZC) info.si_code = TARGET_FPE_FLTDIV;
664 if (arm_fpe & BIT_IOC) info.si_code = TARGET_FPE_FLTINV;
665
666 info._sifields._sigfault._addr = env->regs[15];
667 queue_signal(env, info.si_signo, &info);
668 } else {
669 env->regs[15] += 4;
670 }
671
672 /* accumulate unenabled exceptions */
673 if ((!(fpsr & BIT_IXE)) && (arm_fpe & BIT_IXC))
674 fpsr |= BIT_IXC;
675 if ((!(fpsr & BIT_UFE)) && (arm_fpe & BIT_UFC))
676 fpsr |= BIT_UFC;
677 if ((!(fpsr & BIT_OFE)) && (arm_fpe & BIT_OFC))
678 fpsr |= BIT_OFC;
679 if ((!(fpsr & BIT_DZE)) && (arm_fpe & BIT_DZC))
680 fpsr |= BIT_DZC;
681 if ((!(fpsr & BIT_IOE)) && (arm_fpe & BIT_IOC))
682 fpsr |= BIT_IOC;
683 ts->fpa.fpsr=fpsr;
684 } else { /* everything OK */
685 /* increment PC */
686 env->regs[15] += 4;
687 }
688 }
689 break;
690 case EXCP_SWI:
691 case EXCP_BKPT:
692 {
693 env->eabi = 1;
694 /* system call */
695 if (trapnr == EXCP_BKPT) {
696 if (env->thumb) {
697 /* FIXME - what to do if get_user() fails? */
698 get_user_u16(insn, env->regs[15]);
699 n = insn & 0xff;
700 env->regs[15] += 2;
701 } else {
702 /* FIXME - what to do if get_user() fails? */
703 get_user_u32(insn, env->regs[15]);
704 n = (insn & 0xf) | ((insn >> 4) & 0xff0);
705 env->regs[15] += 4;
706 }
707 } else {
708 if (env->thumb) {
709 /* FIXME - what to do if get_user() fails? */
710 get_user_u16(insn, env->regs[15] - 2);
711 n = insn & 0xff;
712 } else {
713 /* FIXME - what to do if get_user() fails? */
714 get_user_u32(insn, env->regs[15] - 4);
715 n = insn & 0xffffff;
716 }
717 }
718
719 if (n == ARM_NR_cacheflush) {
720 arm_cache_flush(env->regs[0], env->regs[1]);
721 } else if (n == ARM_NR_semihosting
722 || n == ARM_NR_thumb_semihosting) {
723 env->regs[0] = do_arm_semihosting (env);
724 } else if (n == 0 || n >= ARM_SYSCALL_BASE
725 || (env->thumb && n == ARM_THUMB_SYSCALL)) {
726 /* linux syscall */
727 if (env->thumb || n == 0) {
728 n = env->regs[7];
729 } else {
730 n -= ARM_SYSCALL_BASE;
731 env->eabi = 0;
732 }
733 if ( n > ARM_NR_BASE) {
734 switch (n) {
735 case ARM_NR_cacheflush:
736 arm_cache_flush(env->regs[0], env->regs[1]);
737 break;
738 case ARM_NR_set_tls:
739 cpu_set_tls(env, env->regs[0]);
740 env->regs[0] = 0;
741 break;
742 default:
743 gemu_log("qemu: Unsupported ARM syscall: 0x%x\n",
744 n);
745 env->regs[0] = -TARGET_ENOSYS;
746 break;
747 }
748 } else {
749 env->regs[0] = do_syscall(env,
750 n,
751 env->regs[0],
752 env->regs[1],
753 env->regs[2],
754 env->regs[3],
755 env->regs[4],
756 env->regs[5]);
757 }
758 } else {
759 goto error;
760 }
761 }
762 break;
763 case EXCP_INTERRUPT:
764 /* just indicate that signals should be handled asap */
765 break;
766 case EXCP_PREFETCH_ABORT:
767 addr = env->cp15.c6_insn;
768 goto do_segv;
769 case EXCP_DATA_ABORT:
770 addr = env->cp15.c6_data;
771 goto do_segv;
772 do_segv:
773 {
774 info.si_signo = SIGSEGV;
775 info.si_errno = 0;
776 /* XXX: check env->error_code */
777 info.si_code = TARGET_SEGV_MAPERR;
778 info._sifields._sigfault._addr = addr;
779 queue_signal(env, info.si_signo, &info);
780 }
781 break;
782 case EXCP_DEBUG:
783 {
784 int sig;
785
786 sig = gdb_handlesig (env, TARGET_SIGTRAP);
787 if (sig)
788 {
789 info.si_signo = sig;
790 info.si_errno = 0;
791 info.si_code = TARGET_TRAP_BRKPT;
792 queue_signal(env, info.si_signo, &info);
793 }
794 }
795 break;
796 case EXCP_KERNEL_TRAP:
797 if (do_kernel_trap(env))
798 goto error;
799 break;
800 case EXCP_STREX:
801 if (do_strex(env)) {
802 addr = env->cp15.c6_data;
803 goto do_segv;
804 }
805 break;
806 default:
807 error:
808 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
809 trapnr);
810 cpu_dump_state(env, stderr, fprintf, 0);
811 abort();
812 }
813 process_pending_signals(env);
814 }
815 }
816
817 #endif
818
819 #ifdef TARGET_SPARC
820 #define SPARC64_STACK_BIAS 2047
821
822 //#define DEBUG_WIN
823
824 /* WARNING: dealing with register windows _is_ complicated. More info
825 can be found at http://www.sics.se/~psm/sparcstack.html */
826 static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
827 {
828 index = (index + cwp * 16) % (16 * env->nwindows);
829 /* wrap handling : if cwp is on the last window, then we use the
830 registers 'after' the end */
831 if (index < 8 && env->cwp == env->nwindows - 1)
832 index += 16 * env->nwindows;
833 return index;
834 }
835
836 /* save the register window 'cwp1' */
837 static inline void save_window_offset(CPUSPARCState *env, int cwp1)
838 {
839 unsigned int i;
840 abi_ulong sp_ptr;
841
842 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
843 #ifdef TARGET_SPARC64
844 if (sp_ptr & 3)
845 sp_ptr += SPARC64_STACK_BIAS;
846 #endif
847 #if defined(DEBUG_WIN)
848 printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n",
849 sp_ptr, cwp1);
850 #endif
851 for(i = 0; i < 16; i++) {
852 /* FIXME - what to do if put_user() fails? */
853 put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
854 sp_ptr += sizeof(abi_ulong);
855 }
856 }
857
858 static void save_window(CPUSPARCState *env)
859 {
860 #ifndef TARGET_SPARC64
861 unsigned int new_wim;
862 new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) &
863 ((1LL << env->nwindows) - 1);
864 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
865 env->wim = new_wim;
866 #else
867 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
868 env->cansave++;
869 env->canrestore--;
870 #endif
871 }
872
873 static void restore_window(CPUSPARCState *env)
874 {
875 #ifndef TARGET_SPARC64
876 unsigned int new_wim;
877 #endif
878 unsigned int i, cwp1;
879 abi_ulong sp_ptr;
880
881 #ifndef TARGET_SPARC64
882 new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) &
883 ((1LL << env->nwindows) - 1);
884 #endif
885
886 /* restore the invalid window */
887 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
888 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
889 #ifdef TARGET_SPARC64
890 if (sp_ptr & 3)
891 sp_ptr += SPARC64_STACK_BIAS;
892 #endif
893 #if defined(DEBUG_WIN)
894 printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n",
895 sp_ptr, cwp1);
896 #endif
897 for(i = 0; i < 16; i++) {
898 /* FIXME - what to do if get_user() fails? */
899 get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
900 sp_ptr += sizeof(abi_ulong);
901 }
902 #ifdef TARGET_SPARC64
903 env->canrestore++;
904 if (env->cleanwin < env->nwindows - 1)
905 env->cleanwin++;
906 env->cansave--;
907 #else
908 env->wim = new_wim;
909 #endif
910 }
911
912 static void flush_windows(CPUSPARCState *env)
913 {
914 int offset, cwp1;
915
916 offset = 1;
917 for(;;) {
918 /* if restore would invoke restore_window(), then we can stop */
919 cwp1 = cpu_cwp_inc(env, env->cwp + offset);
920 #ifndef TARGET_SPARC64
921 if (env->wim & (1 << cwp1))
922 break;
923 #else
924 if (env->canrestore == 0)
925 break;
926 env->cansave++;
927 env->canrestore--;
928 #endif
929 save_window_offset(env, cwp1);
930 offset++;
931 }
932 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
933 #ifndef TARGET_SPARC64
934 /* set wim so that restore will reload the registers */
935 env->wim = 1 << cwp1;
936 #endif
937 #if defined(DEBUG_WIN)
938 printf("flush_windows: nb=%d\n", offset - 1);
939 #endif
940 }
941
942 void cpu_loop (CPUSPARCState *env)
943 {
944 int trapnr;
945 abi_long ret;
946 target_siginfo_t info;
947
948 while (1) {
949 trapnr = cpu_sparc_exec (env);
950
951 switch (trapnr) {
952 #ifndef TARGET_SPARC64
953 case 0x88:
954 case 0x90:
955 #else
956 case 0x110:
957 case 0x16d:
958 #endif
959 ret = do_syscall (env, env->gregs[1],
960 env->regwptr[0], env->regwptr[1],
961 env->regwptr[2], env->regwptr[3],
962 env->regwptr[4], env->regwptr[5]);
963 if ((abi_ulong)ret >= (abi_ulong)(-515)) {
964 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
965 env->xcc |= PSR_CARRY;
966 #else
967 env->psr |= PSR_CARRY;
968 #endif
969 ret = -ret;
970 } else {
971 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
972 env->xcc &= ~PSR_CARRY;
973 #else
974 env->psr &= ~PSR_CARRY;
975 #endif
976 }
977 env->regwptr[0] = ret;
978 /* next instruction */
979 env->pc = env->npc;
980 env->npc = env->npc + 4;
981 break;
982 case 0x83: /* flush windows */
983 #ifdef TARGET_ABI32
984 case 0x103:
985 #endif
986 flush_windows(env);
987 /* next instruction */
988 env->pc = env->npc;
989 env->npc = env->npc + 4;
990 break;
991 #ifndef TARGET_SPARC64
992 case TT_WIN_OVF: /* window overflow */
993 save_window(env);
994 break;
995 case TT_WIN_UNF: /* window underflow */
996 restore_window(env);
997 break;
998 case TT_TFAULT:
999 case TT_DFAULT:
1000 {
1001 info.si_signo = SIGSEGV;
1002 info.si_errno = 0;
1003 /* XXX: check env->error_code */
1004 info.si_code = TARGET_SEGV_MAPERR;
1005 info._sifields._sigfault._addr = env->mmuregs[4];
1006 queue_signal(env, info.si_signo, &info);
1007 }
1008 break;
1009 #else
1010 case TT_SPILL: /* window overflow */
1011 save_window(env);
1012 break;
1013 case TT_FILL: /* window underflow */
1014 restore_window(env);
1015 break;
1016 case TT_TFAULT:
1017 case TT_DFAULT:
1018 {
1019 info.si_signo = SIGSEGV;
1020 info.si_errno = 0;
1021 /* XXX: check env->error_code */
1022 info.si_code = TARGET_SEGV_MAPERR;
1023 if (trapnr == TT_DFAULT)
1024 info._sifields._sigfault._addr = env->dmmuregs[4];
1025 else
1026 info._sifields._sigfault._addr = cpu_tsptr(env)->tpc;
1027 queue_signal(env, info.si_signo, &info);
1028 }
1029 break;
1030 #ifndef TARGET_ABI32
1031 case 0x16e:
1032 flush_windows(env);
1033 sparc64_get_context(env);
1034 break;
1035 case 0x16f:
1036 flush_windows(env);
1037 sparc64_set_context(env);
1038 break;
1039 #endif
1040 #endif
1041 case EXCP_INTERRUPT:
1042 /* just indicate that signals should be handled asap */
1043 break;
1044 case EXCP_DEBUG:
1045 {
1046 int sig;
1047
1048 sig = gdb_handlesig (env, TARGET_SIGTRAP);
1049 if (sig)
1050 {
1051 info.si_signo = sig;
1052 info.si_errno = 0;
1053 info.si_code = TARGET_TRAP_BRKPT;
1054 queue_signal(env, info.si_signo, &info);
1055 }
1056 }
1057 break;
1058 default:
1059 printf ("Unhandled trap: 0x%x\n", trapnr);
1060 cpu_dump_state(env, stderr, fprintf, 0);
1061 exit (1);
1062 }
1063 process_pending_signals (env);
1064 }
1065 }
1066
1067 #endif
1068
1069 #ifdef TARGET_PPC
1070 static inline uint64_t cpu_ppc_get_tb (CPUState *env)
1071 {
1072 /* TO FIX */
1073 return 0;
1074 }
1075
1076 uint64_t cpu_ppc_load_tbl (CPUState *env)
1077 {
1078 return cpu_ppc_get_tb(env);
1079 }
1080
1081 uint32_t cpu_ppc_load_tbu (CPUState *env)
1082 {
1083 return cpu_ppc_get_tb(env) >> 32;
1084 }
1085
1086 uint64_t cpu_ppc_load_atbl (CPUState *env)
1087 {
1088 return cpu_ppc_get_tb(env);
1089 }
1090
1091 uint32_t cpu_ppc_load_atbu (CPUState *env)
1092 {
1093 return cpu_ppc_get_tb(env) >> 32;
1094 }
1095
1096 uint32_t cpu_ppc601_load_rtcu (CPUState *env)
1097 __attribute__ (( alias ("cpu_ppc_load_tbu") ));
1098
1099 uint32_t cpu_ppc601_load_rtcl (CPUState *env)
1100 {
1101 return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
1102 }
1103
1104 /* XXX: to be fixed */
1105 int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, uint32_t *valp)
1106 {
1107 return -1;
1108 }
1109
1110 int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, uint32_t val)
1111 {
1112 return -1;
1113 }
1114
1115 #define EXCP_DUMP(env, fmt, ...) \
1116 do { \
1117 fprintf(stderr, fmt , ## __VA_ARGS__); \
1118 cpu_dump_state(env, stderr, fprintf, 0); \
1119 qemu_log(fmt, ## __VA_ARGS__); \
1120 if (logfile) \
1121 log_cpu_state(env, 0); \
1122 } while (0)
1123
1124 static int do_store_exclusive(CPUPPCState *env)
1125 {
1126 target_ulong addr;
1127 target_ulong page_addr;
1128 target_ulong val;
1129 int flags;
1130 int segv = 0;
1131
1132 addr = env->reserve_ea;
1133 page_addr = addr & TARGET_PAGE_MASK;
1134 start_exclusive();
1135 mmap_lock();
1136 flags = page_get_flags(page_addr);
1137 if ((flags & PAGE_READ) == 0) {
1138 segv = 1;
1139 } else {
1140 int reg = env->reserve_info & 0x1f;
1141 int size = (env->reserve_info >> 5) & 0xf;
1142 int stored = 0;
1143
1144 if (addr == env->reserve_addr) {
1145 switch (size) {
1146 case 1: segv = get_user_u8(val, addr); break;
1147 case 2: segv = get_user_u16(val, addr); break;
1148 case 4: segv = get_user_u32(val, addr); break;
1149 #if defined(TARGET_PPC64)
1150 case 8: segv = get_user_u64(val, addr); break;
1151 #endif
1152 default: abort();
1153 }
1154 if (!segv && val == env->reserve_val) {
1155 val = env->gpr[reg];
1156 switch (size) {
1157 case 1: segv = put_user_u8(val, addr); break;
1158 case 2: segv = put_user_u16(val, addr); break;
1159 case 4: segv = put_user_u32(val, addr); break;
1160 #if defined(TARGET_PPC64)
1161 case 8: segv = put_user_u64(val, addr); break;
1162 #endif
1163 default: abort();
1164 }
1165 if (!segv) {
1166 stored = 1;
1167 }
1168 }
1169 }
1170 env->crf[0] = (stored << 1) | xer_so;
1171 env->reserve_addr = (target_ulong)-1;
1172 }
1173 if (!segv) {
1174 env->nip += 4;
1175 }
1176 mmap_unlock();
1177 end_exclusive();
1178 return segv;
1179 }
1180
1181 void cpu_loop(CPUPPCState *env)
1182 {
1183 target_siginfo_t info;
1184 int trapnr;
1185 uint32_t ret;
1186
1187 for(;;) {
1188 cpu_exec_start(env);
1189 trapnr = cpu_ppc_exec(env);
1190 cpu_exec_end(env);
1191 switch(trapnr) {
1192 case POWERPC_EXCP_NONE:
1193 /* Just go on */
1194 break;
1195 case POWERPC_EXCP_CRITICAL: /* Critical input */
1196 cpu_abort(env, "Critical interrupt while in user mode. "
1197 "Aborting\n");
1198 break;
1199 case POWERPC_EXCP_MCHECK: /* Machine check exception */
1200 cpu_abort(env, "Machine check exception while in user mode. "
1201 "Aborting\n");
1202 break;
1203 case POWERPC_EXCP_DSI: /* Data storage exception */
1204 EXCP_DUMP(env, "Invalid data memory access: 0x" TARGET_FMT_lx "\n",
1205 env->spr[SPR_DAR]);
1206 /* XXX: check this. Seems bugged */
1207 switch (env->error_code & 0xFF000000) {
1208 case 0x40000000:
1209 info.si_signo = TARGET_SIGSEGV;
1210 info.si_errno = 0;
1211 info.si_code = TARGET_SEGV_MAPERR;
1212 break;
1213 case 0x04000000:
1214 info.si_signo = TARGET_SIGILL;
1215 info.si_errno = 0;
1216 info.si_code = TARGET_ILL_ILLADR;
1217 break;
1218 case 0x08000000:
1219 info.si_signo = TARGET_SIGSEGV;
1220 info.si_errno = 0;
1221 info.si_code = TARGET_SEGV_ACCERR;
1222 break;
1223 default:
1224 /* Let's send a regular segfault... */
1225 EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
1226 env->error_code);
1227 info.si_signo = TARGET_SIGSEGV;
1228 info.si_errno = 0;
1229 info.si_code = TARGET_SEGV_MAPERR;
1230 break;
1231 }
1232 info._sifields._sigfault._addr = env->nip;
1233 queue_signal(env, info.si_signo, &info);
1234 break;
1235 case POWERPC_EXCP_ISI: /* Instruction storage exception */
1236 EXCP_DUMP(env, "Invalid instruction fetch: 0x\n" TARGET_FMT_lx
1237 "\n", env->spr[SPR_SRR0]);
1238 /* XXX: check this */
1239 switch (env->error_code & 0xFF000000) {
1240 case 0x40000000:
1241 info.si_signo = TARGET_SIGSEGV;
1242 info.si_errno = 0;
1243 info.si_code = TARGET_SEGV_MAPERR;
1244 break;
1245 case 0x10000000:
1246 case 0x08000000:
1247 info.si_signo = TARGET_SIGSEGV;
1248 info.si_errno = 0;
1249 info.si_code = TARGET_SEGV_ACCERR;
1250 break;
1251 default:
1252 /* Let's send a regular segfault... */
1253 EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
1254 env->error_code);
1255 info.si_signo = TARGET_SIGSEGV;
1256 info.si_errno = 0;
1257 info.si_code = TARGET_SEGV_MAPERR;
1258 break;
1259 }
1260 info._sifields._sigfault._addr = env->nip - 4;
1261 queue_signal(env, info.si_signo, &info);
1262 break;
1263 case POWERPC_EXCP_EXTERNAL: /* External input */
1264 cpu_abort(env, "External interrupt while in user mode. "
1265 "Aborting\n");
1266 break;
1267 case POWERPC_EXCP_ALIGN: /* Alignment exception */
1268 EXCP_DUMP(env, "Unaligned memory access\n");
1269 /* XXX: check this */
1270 info.si_signo = TARGET_SIGBUS;
1271 info.si_errno = 0;
1272 info.si_code = TARGET_BUS_ADRALN;
1273 info._sifields._sigfault._addr = env->nip - 4;
1274 queue_signal(env, info.si_signo, &info);
1275 break;
1276 case POWERPC_EXCP_PROGRAM: /* Program exception */
1277 /* XXX: check this */
1278 switch (env->error_code & ~0xF) {
1279 case POWERPC_EXCP_FP:
1280 EXCP_DUMP(env, "Floating point program exception\n");
1281 info.si_signo = TARGET_SIGFPE;
1282 info.si_errno = 0;
1283 switch (env->error_code & 0xF) {
1284 case POWERPC_EXCP_FP_OX:
1285 info.si_code = TARGET_FPE_FLTOVF;
1286 break;
1287 case POWERPC_EXCP_FP_UX:
1288 info.si_code = TARGET_FPE_FLTUND;
1289 break;
1290 case POWERPC_EXCP_FP_ZX:
1291 case POWERPC_EXCP_FP_VXZDZ:
1292 info.si_code = TARGET_FPE_FLTDIV;
1293 break;
1294 case POWERPC_EXCP_FP_XX:
1295 info.si_code = TARGET_FPE_FLTRES;
1296 break;
1297 case POWERPC_EXCP_FP_VXSOFT:
1298 info.si_code = TARGET_FPE_FLTINV;
1299 break;
1300 case POWERPC_EXCP_FP_VXSNAN:
1301 case POWERPC_EXCP_FP_VXISI:
1302 case POWERPC_EXCP_FP_VXIDI:
1303 case POWERPC_EXCP_FP_VXIMZ:
1304 case POWERPC_EXCP_FP_VXVC:
1305 case POWERPC_EXCP_FP_VXSQRT:
1306 case POWERPC_EXCP_FP_VXCVI:
1307 info.si_code = TARGET_FPE_FLTSUB;
1308 break;
1309 default:
1310 EXCP_DUMP(env, "Unknown floating point exception (%02x)\n",
1311 env->error_code);
1312 break;
1313 }
1314 break;
1315 case POWERPC_EXCP_INVAL:
1316 EXCP_DUMP(env, "Invalid instruction\n");
1317 info.si_signo = TARGET_SIGILL;
1318 info.si_errno = 0;
1319 switch (env->error_code & 0xF) {
1320 case POWERPC_EXCP_INVAL_INVAL:
1321 info.si_code = TARGET_ILL_ILLOPC;
1322 break;
1323 case POWERPC_EXCP_INVAL_LSWX:
1324 info.si_code = TARGET_ILL_ILLOPN;
1325 break;
1326 case POWERPC_EXCP_INVAL_SPR:
1327 info.si_code = TARGET_ILL_PRVREG;
1328 break;
1329 case POWERPC_EXCP_INVAL_FP:
1330 info.si_code = TARGET_ILL_COPROC;
1331 break;
1332 default:
1333 EXCP_DUMP(env, "Unknown invalid operation (%02x)\n",
1334 env->error_code & 0xF);
1335 info.si_code = TARGET_ILL_ILLADR;
1336 break;
1337 }
1338 break;
1339 case POWERPC_EXCP_PRIV:
1340 EXCP_DUMP(env, "Privilege violation\n");
1341 info.si_signo = TARGET_SIGILL;
1342 info.si_errno = 0;
1343 switch (env->error_code & 0xF) {
1344 case POWERPC_EXCP_PRIV_OPC:
1345 info.si_code = TARGET_ILL_PRVOPC;
1346 break;
1347 case POWERPC_EXCP_PRIV_REG:
1348 info.si_code = TARGET_ILL_PRVREG;
1349 break;
1350 default:
1351 EXCP_DUMP(env, "Unknown privilege violation (%02x)\n",
1352 env->error_code & 0xF);
1353 info.si_code = TARGET_ILL_PRVOPC;
1354 break;
1355 }
1356 break;
1357 case POWERPC_EXCP_TRAP:
1358 cpu_abort(env, "Tried to call a TRAP\n");
1359 break;
1360 default:
1361 /* Should not happen ! */
1362 cpu_abort(env, "Unknown program exception (%02x)\n",
1363 env->error_code);
1364 break;
1365 }
1366 info._sifields._sigfault._addr = env->nip - 4;
1367 queue_signal(env, info.si_signo, &info);
1368 break;
1369 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
1370 EXCP_DUMP(env, "No floating point allowed\n");
1371 info.si_signo = TARGET_SIGILL;
1372 info.si_errno = 0;
1373 info.si_code = TARGET_ILL_COPROC;
1374 info._sifields._sigfault._addr = env->nip - 4;
1375 queue_signal(env, info.si_signo, &info);
1376 break;
1377 case POWERPC_EXCP_SYSCALL: /* System call exception */
1378 cpu_abort(env, "Syscall exception while in user mode. "
1379 "Aborting\n");
1380 break;
1381 case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
1382 EXCP_DUMP(env, "No APU instruction allowed\n");
1383 info.si_signo = TARGET_SIGILL;
1384 info.si_errno = 0;
1385 info.si_code = TARGET_ILL_COPROC;
1386 info._sifields._sigfault._addr = env->nip - 4;
1387 queue_signal(env, info.si_signo, &info);
1388 break;
1389 case POWERPC_EXCP_DECR: /* Decrementer exception */
1390 cpu_abort(env, "Decrementer interrupt while in user mode. "
1391 "Aborting\n");
1392 break;
1393 case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
1394 cpu_abort(env, "Fix interval timer interrupt while in user mode. "
1395 "Aborting\n");
1396 break;
1397 case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
1398 cpu_abort(env, "Watchdog timer interrupt while in user mode. "
1399 "Aborting\n");
1400 break;
1401 case POWERPC_EXCP_DTLB: /* Data TLB error */
1402 cpu_abort(env, "Data TLB exception while in user mode. "
1403 "Aborting\n");
1404 break;
1405 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
1406 cpu_abort(env, "Instruction TLB exception while in user mode. "
1407 "Aborting\n");
1408 break;
1409 case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */
1410 EXCP_DUMP(env, "No SPE/floating-point instruction allowed\n");
1411 info.si_signo = TARGET_SIGILL;
1412 info.si_errno = 0;
1413 info.si_code = TARGET_ILL_COPROC;
1414 info._sifields._sigfault._addr = env->nip - 4;
1415 queue_signal(env, info.si_signo, &info);
1416 break;
1417 case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */
1418 cpu_abort(env, "Embedded floating-point data IRQ not handled\n");
1419 break;
1420 case POWERPC_EXCP_EFPRI: /* Embedded floating-point round IRQ */
1421 cpu_abort(env, "Embedded floating-point round IRQ not handled\n");
1422 break;
1423 case POWERPC_EXCP_EPERFM: /* Embedded performance monitor IRQ */
1424 cpu_abort(env, "Performance monitor exception not handled\n");
1425 break;
1426 case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
1427 cpu_abort(env, "Doorbell interrupt while in user mode. "
1428 "Aborting\n");
1429 break;
1430 case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
1431 cpu_abort(env, "Doorbell critical interrupt while in user mode. "
1432 "Aborting\n");
1433 break;
1434 case POWERPC_EXCP_RESET: /* System reset exception */
1435 cpu_abort(env, "Reset interrupt while in user mode. "
1436 "Aborting\n");
1437 break;
1438 case POWERPC_EXCP_DSEG: /* Data segment exception */
1439 cpu_abort(env, "Data segment exception while in user mode. "
1440 "Aborting\n");
1441 break;
1442 case POWERPC_EXCP_ISEG: /* Instruction segment exception */
1443 cpu_abort(env, "Instruction segment exception "
1444 "while in user mode. Aborting\n");
1445 break;
1446 /* PowerPC 64 with hypervisor mode support */
1447 case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
1448 cpu_abort(env, "Hypervisor decrementer interrupt "
1449 "while in user mode. Aborting\n");
1450 break;
1451 case POWERPC_EXCP_TRACE: /* Trace exception */
1452 /* Nothing to do:
1453 * we use this exception to emulate step-by-step execution mode.
1454 */
1455 break;
1456 /* PowerPC 64 with hypervisor mode support */
1457 case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
1458 cpu_abort(env, "Hypervisor data storage exception "
1459 "while in user mode. Aborting\n");
1460 break;
1461 case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */
1462 cpu_abort(env, "Hypervisor instruction storage exception "
1463 "while in user mode. Aborting\n");
1464 break;
1465 case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
1466 cpu_abort(env, "Hypervisor data segment exception "
1467 "while in user mode. Aborting\n");
1468 break;
1469 case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */
1470 cpu_abort(env, "Hypervisor instruction segment exception "
1471 "while in user mode. Aborting\n");
1472 break;
1473 case POWERPC_EXCP_VPU: /* Vector unavailable exception */
1474 EXCP_DUMP(env, "No Altivec instructions allowed\n");
1475 info.si_signo = TARGET_SIGILL;
1476 info.si_errno = 0;
1477 info.si_code = TARGET_ILL_COPROC;
1478 info._sifields._sigfault._addr = env->nip - 4;
1479 queue_signal(env, info.si_signo, &info);
1480 break;
1481 case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */
1482 cpu_abort(env, "Programable interval timer interrupt "
1483 "while in user mode. Aborting\n");
1484 break;
1485 case POWERPC_EXCP_IO: /* IO error exception */
1486 cpu_abort(env, "IO error exception while in user mode. "
1487 "Aborting\n");
1488 break;
1489 case POWERPC_EXCP_RUNM: /* Run mode exception */
1490 cpu_abort(env, "Run mode exception while in user mode. "
1491 "Aborting\n");
1492 break;
1493 case POWERPC_EXCP_EMUL: /* Emulation trap exception */
1494 cpu_abort(env, "Emulation trap exception not handled\n");
1495 break;
1496 case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
1497 cpu_abort(env, "Instruction fetch TLB exception "
1498 "while in user-mode. Aborting");
1499 break;
1500 case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
1501 cpu_abort(env, "Data load TLB exception while in user-mode. "
1502 "Aborting");
1503 break;
1504 case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
1505 cpu_abort(env, "Data store TLB exception while in user-mode. "
1506 "Aborting");
1507 break;
1508 case POWERPC_EXCP_FPA: /* Floating-point assist exception */
1509 cpu_abort(env, "Floating-point assist exception not handled\n");
1510 break;
1511 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
1512 cpu_abort(env, "Instruction address breakpoint exception "
1513 "not handled\n");
1514 break;
1515 case POWERPC_EXCP_SMI: /* System management interrupt */
1516 cpu_abort(env, "System management interrupt while in user mode. "
1517 "Aborting\n");
1518 break;
1519 case POWERPC_EXCP_THERM: /* Thermal interrupt */
1520 cpu_abort(env, "Thermal interrupt interrupt while in user mode. "
1521 "Aborting\n");
1522 break;
1523 case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */
1524 cpu_abort(env, "Performance monitor exception not handled\n");
1525 break;
1526 case POWERPC_EXCP_VPUA: /* Vector assist exception */
1527 cpu_abort(env, "Vector assist exception not handled\n");
1528 break;
1529 case POWERPC_EXCP_SOFTP: /* Soft patch exception */
1530 cpu_abort(env, "Soft patch exception not handled\n");
1531 break;
1532 case POWERPC_EXCP_MAINT: /* Maintenance exception */
1533 cpu_abort(env, "Maintenance exception while in user mode. "
1534 "Aborting\n");
1535 break;
1536 case POWERPC_EXCP_STOP: /* stop translation */
1537 /* We did invalidate the instruction cache. Go on */
1538 break;
1539 case POWERPC_EXCP_BRANCH: /* branch instruction: */
1540 /* We just stopped because of a branch. Go on */
1541 break;
1542 case POWERPC_EXCP_SYSCALL_USER:
1543 /* system call in user-mode emulation */
1544 /* WARNING:
1545 * PPC ABI uses overflow flag in cr0 to signal an error
1546 * in syscalls.
1547 */
1548 #if 0
1549 printf("syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n", env->gpr[0],
1550 env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6]);
1551 #endif
1552 env->crf[0] &= ~0x1;
1553 ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
1554 env->gpr[5], env->gpr[6], env->gpr[7],
1555 env->gpr[8]);
1556 if (ret == (uint32_t)(-TARGET_QEMU_ESIGRETURN)) {
1557 /* Returning from a successful sigreturn syscall.
1558 Avoid corrupting register state. */
1559 break;
1560 }
1561 if (ret > (uint32_t)(-515)) {
1562 env->crf[0] |= 0x1;
1563 ret = -ret;
1564 }
1565 env->gpr[3] = ret;
1566 #if 0
1567 printf("syscall returned 0x%08x (%d)\n", ret, ret);
1568 #endif
1569 break;
1570 case POWERPC_EXCP_STCX:
1571 if (do_store_exclusive(env)) {
1572 info.si_signo = TARGET_SIGSEGV;
1573 info.si_errno = 0;
1574 info.si_code = TARGET_SEGV_MAPERR;
1575 info._sifields._sigfault._addr = env->nip;
1576 queue_signal(env, info.si_signo, &info);
1577 }
1578 break;
1579 case EXCP_DEBUG:
1580 {
1581 int sig;
1582
1583 sig = gdb_handlesig(env, TARGET_SIGTRAP);
1584 if (sig) {
1585 info.si_signo = sig;
1586 info.si_errno = 0;
1587 info.si_code = TARGET_TRAP_BRKPT;
1588 queue_signal(env, info.si_signo, &info);
1589 }
1590 }
1591 break;
1592 case EXCP_INTERRUPT:
1593 /* just indicate that signals should be handled asap */
1594 break;
1595 default:
1596 cpu_abort(env, "Unknown exception 0x%d. Aborting\n", trapnr);
1597 break;
1598 }
1599 process_pending_signals(env);
1600 }
1601 }
1602 #endif
1603
1604 #ifdef TARGET_MIPS
1605
1606 #define MIPS_SYS(name, args) args,
1607
1608 static const uint8_t mips_syscall_args[] = {
1609 MIPS_SYS(sys_syscall , 0) /* 4000 */
1610 MIPS_SYS(sys_exit , 1)
1611 MIPS_SYS(sys_fork , 0)
1612 MIPS_SYS(sys_read , 3)
1613 MIPS_SYS(sys_write , 3)
1614 MIPS_SYS(sys_open , 3) /* 4005 */
1615 MIPS_SYS(sys_close , 1)
1616 MIPS_SYS(sys_waitpid , 3)
1617 MIPS_SYS(sys_creat , 2)
1618 MIPS_SYS(sys_link , 2)
1619 MIPS_SYS(sys_unlink , 1) /* 4010 */
1620 MIPS_SYS(sys_execve , 0)
1621 MIPS_SYS(sys_chdir , 1)
1622 MIPS_SYS(sys_time , 1)
1623 MIPS_SYS(sys_mknod , 3)
1624 MIPS_SYS(sys_chmod , 2) /* 4015 */
1625 MIPS_SYS(sys_lchown , 3)
1626 MIPS_SYS(sys_ni_syscall , 0)
1627 MIPS_SYS(sys_ni_syscall , 0) /* was sys_stat */
1628 MIPS_SYS(sys_lseek , 3)
1629 MIPS_SYS(sys_getpid , 0) /* 4020 */
1630 MIPS_SYS(sys_mount , 5)
1631 MIPS_SYS(sys_oldumount , 1)
1632 MIPS_SYS(sys_setuid , 1)
1633 MIPS_SYS(sys_getuid , 0)
1634 MIPS_SYS(sys_stime , 1) /* 4025 */
1635 MIPS_SYS(sys_ptrace , 4)
1636 MIPS_SYS(sys_alarm , 1)
1637 MIPS_SYS(sys_ni_syscall , 0) /* was sys_fstat */
1638 MIPS_SYS(sys_pause , 0)
1639 MIPS_SYS(sys_utime , 2) /* 4030 */
1640 MIPS_SYS(sys_ni_syscall , 0)
1641 MIPS_SYS(sys_ni_syscall , 0)
1642 MIPS_SYS(sys_access , 2)
1643 MIPS_SYS(sys_nice , 1)
1644 MIPS_SYS(sys_ni_syscall , 0) /* 4035 */
1645 MIPS_SYS(sys_sync , 0)
1646 MIPS_SYS(sys_kill , 2)
1647 MIPS_SYS(sys_rename , 2)
1648 MIPS_SYS(sys_mkdir , 2)
1649 MIPS_SYS(sys_rmdir , 1) /* 4040 */
1650 MIPS_SYS(sys_dup , 1)
1651 MIPS_SYS(sys_pipe , 0)
1652 MIPS_SYS(sys_times , 1)
1653 MIPS_SYS(sys_ni_syscall , 0)
1654 MIPS_SYS(sys_brk , 1) /* 4045 */
1655 MIPS_SYS(sys_setgid , 1)
1656 MIPS_SYS(sys_getgid , 0)
1657 MIPS_SYS(sys_ni_syscall , 0) /* was signal(2) */
1658 MIPS_SYS(sys_geteuid , 0)
1659 MIPS_SYS(sys_getegid , 0) /* 4050 */
1660 MIPS_SYS(sys_acct , 0)
1661 MIPS_SYS(sys_umount , 2)
1662 MIPS_SYS(sys_ni_syscall , 0)
1663 MIPS_SYS(sys_ioctl , 3)
1664 MIPS_SYS(sys_fcntl , 3) /* 4055 */
1665 MIPS_SYS(sys_ni_syscall , 2)
1666 MIPS_SYS(sys_setpgid , 2)
1667 MIPS_SYS(sys_ni_syscall , 0)
1668 MIPS_SYS(sys_olduname , 1)
1669 MIPS_SYS(sys_umask , 1) /* 4060 */
1670 MIPS_SYS(sys_chroot , 1)
1671 MIPS_SYS(sys_ustat , 2)
1672 MIPS_SYS(sys_dup2 , 2)
1673 MIPS_SYS(sys_getppid , 0)
1674 MIPS_SYS(sys_getpgrp , 0) /* 4065 */
1675 MIPS_SYS(sys_setsid , 0)
1676 MIPS_SYS(sys_sigaction , 3)
1677 MIPS_SYS(sys_sgetmask , 0)
1678 MIPS_SYS(sys_ssetmask , 1)
1679 MIPS_SYS(sys_setreuid , 2) /* 4070 */
1680 MIPS_SYS(sys_setregid , 2)
1681 MIPS_SYS(sys_sigsuspend , 0)
1682 MIPS_SYS(sys_sigpending , 1)
1683 MIPS_SYS(sys_sethostname , 2)
1684 MIPS_SYS(sys_setrlimit , 2) /* 4075 */
1685 MIPS_SYS(sys_getrlimit , 2)
1686 MIPS_SYS(sys_getrusage , 2)
1687 MIPS_SYS(sys_gettimeofday, 2)
1688 MIPS_SYS(sys_settimeofday, 2)
1689 MIPS_SYS(sys_getgroups , 2) /* 4080 */
1690 MIPS_SYS(sys_setgroups , 2)
1691 MIPS_SYS(sys_ni_syscall , 0) /* old_select */
1692 MIPS_SYS(sys_symlink , 2)
1693 MIPS_SYS(sys_ni_syscall , 0) /* was sys_lstat */
1694 MIPS_SYS(sys_readlink , 3) /* 4085 */
1695 MIPS_SYS(sys_uselib , 1)
1696 MIPS_SYS(sys_swapon , 2)
1697 MIPS_SYS(sys_reboot , 3)
1698 MIPS_SYS(old_readdir , 3)
1699 MIPS_SYS(old_mmap , 6) /* 4090 */
1700 MIPS_SYS(sys_munmap , 2)
1701 MIPS_SYS(sys_truncate , 2)
1702 MIPS_SYS(sys_ftruncate , 2)
1703 MIPS_SYS(sys_fchmod , 2)
1704 MIPS_SYS(sys_fchown , 3) /* 4095 */
1705 MIPS_SYS(sys_getpriority , 2)
1706 MIPS_SYS(sys_setpriority , 3)
1707 MIPS_SYS(sys_ni_syscall , 0)
1708 MIPS_SYS(sys_statfs , 2)
1709 MIPS_SYS(sys_fstatfs , 2) /* 4100 */
1710 MIPS_SYS(sys_ni_syscall , 0) /* was ioperm(2) */
1711 MIPS_SYS(sys_socketcall , 2)
1712 MIPS_SYS(sys_syslog , 3)
1713 MIPS_SYS(sys_setitimer , 3)
1714 MIPS_SYS(sys_getitimer , 2) /* 4105 */
1715 MIPS_SYS(sys_newstat , 2)
1716 MIPS_SYS(sys_newlstat , 2)
1717 MIPS_SYS(sys_newfstat , 2)
1718 MIPS_SYS(sys_uname , 1)
1719 MIPS_SYS(sys_ni_syscall , 0) /* 4110 was iopl(2) */
1720 MIPS_SYS(sys_vhangup , 0)
1721 MIPS_SYS(sys_ni_syscall , 0) /* was sys_idle() */
1722 MIPS_SYS(sys_ni_syscall , 0) /* was sys_vm86 */
1723 MIPS_SYS(sys_wait4 , 4)
1724 MIPS_SYS(sys_swapoff , 1) /* 4115 */
1725 MIPS_SYS(sys_sysinfo , 1)
1726 MIPS_SYS(sys_ipc , 6)
1727 MIPS_SYS(sys_fsync , 1)
1728 MIPS_SYS(sys_sigreturn , 0)
1729 MIPS_SYS(sys_clone , 6) /* 4120 */
1730 MIPS_SYS(sys_setdomainname, 2)
1731 MIPS_SYS(sys_newuname , 1)
1732 MIPS_SYS(sys_ni_syscall , 0) /* sys_modify_ldt */
1733 MIPS_SYS(sys_adjtimex , 1)
1734 MIPS_SYS(sys_mprotect , 3) /* 4125 */
1735 MIPS_SYS(sys_sigprocmask , 3)
1736 MIPS_SYS(sys_ni_syscall , 0) /* was create_module */
1737 MIPS_SYS(sys_init_module , 5)
1738 MIPS_SYS(sys_delete_module, 1)
1739 MIPS_SYS(sys_ni_syscall , 0) /* 4130 was get_kernel_syms */
1740 MIPS_SYS(sys_quotactl , 0)
1741 MIPS_SYS(sys_getpgid , 1)
1742 MIPS_SYS(sys_fchdir , 1)
1743 MIPS_SYS(sys_bdflush , 2)
1744 MIPS_SYS(sys_sysfs , 3) /* 4135 */
1745 MIPS_SYS(sys_personality , 1)
1746 MIPS_SYS(sys_ni_syscall , 0) /* for afs_syscall */
1747 MIPS_SYS(sys_setfsuid , 1)
1748 MIPS_SYS(sys_setfsgid , 1)
1749 MIPS_SYS(sys_llseek , 5) /* 4140 */
1750 MIPS_SYS(sys_getdents , 3)
1751 MIPS_SYS(sys_select , 5)
1752 MIPS_SYS(sys_flock , 2)
1753 MIPS_SYS(sys_msync , 3)
1754 MIPS_SYS(sys_readv , 3) /* 4145 */
1755 MIPS_SYS(sys_writev , 3)
1756 MIPS_SYS(sys_cacheflush , 3)
1757 MIPS_SYS(sys_cachectl , 3)
1758 MIPS_SYS(sys_sysmips , 4)
1759 MIPS_SYS(sys_ni_syscall , 0) /* 4150 */
1760 MIPS_SYS(sys_getsid , 1)
1761 MIPS_SYS(sys_fdatasync , 0)
1762 MIPS_SYS(sys_sysctl , 1)
1763 MIPS_SYS(sys_mlock , 2)
1764 MIPS_SYS(sys_munlock , 2) /* 4155 */
1765 MIPS_SYS(sys_mlockall , 1)
1766 MIPS_SYS(sys_munlockall , 0)
1767 MIPS_SYS(sys_sched_setparam, 2)
1768 MIPS_SYS(sys_sched_getparam, 2)
1769 MIPS_SYS(sys_sched_setscheduler, 3) /* 4160 */
1770 MIPS_SYS(sys_sched_getscheduler, 1)
1771 MIPS_SYS(sys_sched_yield , 0)
1772 MIPS_SYS(sys_sched_get_priority_max, 1)
1773 MIPS_SYS(sys_sched_get_priority_min, 1)
1774 MIPS_SYS(sys_sched_rr_get_interval, 2) /* 4165 */
1775 MIPS_SYS(sys_nanosleep, 2)
1776 MIPS_SYS(sys_mremap , 4)
1777 MIPS_SYS(sys_accept , 3)
1778 MIPS_SYS(sys_bind , 3)
1779 MIPS_SYS(sys_connect , 3) /* 4170 */
1780 MIPS_SYS(sys_getpeername , 3)
1781 MIPS_SYS(sys_getsockname , 3)
1782 MIPS_SYS(sys_getsockopt , 5)
1783 MIPS_SYS(sys_listen , 2)
1784 MIPS_SYS(sys_recv , 4) /* 4175 */
1785 MIPS_SYS(sys_recvfrom , 6)
1786 MIPS_SYS(sys_recvmsg , 3)
1787 MIPS_SYS(sys_send , 4)
1788 MIPS_SYS(sys_sendmsg , 3)
1789 MIPS_SYS(sys_sendto , 6) /* 4180 */
1790 MIPS_SYS(sys_setsockopt , 5)
1791 MIPS_SYS(sys_shutdown , 2)
1792 MIPS_SYS(sys_socket , 3)
1793 MIPS_SYS(sys_socketpair , 4)
1794 MIPS_SYS(sys_setresuid , 3) /* 4185 */
1795 MIPS_SYS(sys_getresuid , 3)
1796 MIPS_SYS(sys_ni_syscall , 0) /* was sys_query_module */
1797 MIPS_SYS(sys_poll , 3)
1798 MIPS_SYS(sys_nfsservctl , 3)
1799 MIPS_SYS(sys_setresgid , 3) /* 4190 */
1800 MIPS_SYS(sys_getresgid , 3)
1801 MIPS_SYS(sys_prctl , 5)
1802 MIPS_SYS(sys_rt_sigreturn, 0)
1803 MIPS_SYS(sys_rt_sigaction, 4)
1804 MIPS_SYS(sys_rt_sigprocmask, 4) /* 4195 */
1805 MIPS_SYS(sys_rt_sigpending, 2)
1806 MIPS_SYS(sys_rt_sigtimedwait, 4)
1807 MIPS_SYS(sys_rt_sigqueueinfo, 3)
1808 MIPS_SYS(sys_rt_sigsuspend, 0)
1809 MIPS_SYS(sys_pread64 , 6) /* 4200 */
1810 MIPS_SYS(sys_pwrite64 , 6)
1811 MIPS_SYS(sys_chown , 3)
1812 MIPS_SYS(sys_getcwd , 2)
1813 MIPS_SYS(sys_capget , 2)
1814 MIPS_SYS(sys_capset , 2) /* 4205 */
1815 MIPS_SYS(sys_sigaltstack , 0)
1816 MIPS_SYS(sys_sendfile , 4)
1817 MIPS_SYS(sys_ni_syscall , 0)
1818 MIPS_SYS(sys_ni_syscall , 0)
1819 MIPS_SYS(sys_mmap2 , 6) /* 4210 */
1820 MIPS_SYS(sys_truncate64 , 4)
1821 MIPS_SYS(sys_ftruncate64 , 4)
1822 MIPS_SYS(sys_stat64 , 2)
1823 MIPS_SYS(sys_lstat64 , 2)
1824 MIPS_SYS(sys_fstat64 , 2) /* 4215 */
1825 MIPS_SYS(sys_pivot_root , 2)
1826 MIPS_SYS(sys_mincore , 3)
1827 MIPS_SYS(sys_madvise , 3)
1828 MIPS_SYS(sys_getdents64 , 3)
1829 MIPS_SYS(sys_fcntl64 , 3) /* 4220 */
1830 MIPS_SYS(sys_ni_syscall , 0)
1831 MIPS_SYS(sys_gettid , 0)
1832 MIPS_SYS(sys_readahead , 5)
1833 MIPS_SYS(sys_setxattr , 5)
1834 MIPS_SYS(sys_lsetxattr , 5) /* 4225 */
1835 MIPS_SYS(sys_fsetxattr , 5)
1836 MIPS_SYS(sys_getxattr , 4)
1837 MIPS_SYS(sys_lgetxattr , 4)
1838 MIPS_SYS(sys_fgetxattr , 4)
1839 MIPS_SYS(sys_listxattr , 3) /* 4230 */
1840 MIPS_SYS(sys_llistxattr , 3)
1841 MIPS_SYS(sys_flistxattr , 3)
1842 MIPS_SYS(sys_removexattr , 2)
1843 MIPS_SYS(sys_lremovexattr, 2)
1844 MIPS_SYS(sys_fremovexattr, 2) /* 4235 */
1845 MIPS_SYS(sys_tkill , 2)
1846 MIPS_SYS(sys_sendfile64 , 5)
1847 MIPS_SYS(sys_futex , 2)
1848 MIPS_SYS(sys_sched_setaffinity, 3)
1849 MIPS_SYS(sys_sched_getaffinity, 3) /* 4240 */
1850 MIPS_SYS(sys_io_setup , 2)
1851 MIPS_SYS(sys_io_destroy , 1)
1852 MIPS_SYS(sys_io_getevents, 5)
1853 MIPS_SYS(sys_io_submit , 3)
1854 MIPS_SYS(sys_io_cancel , 3) /* 4245 */
1855 MIPS_SYS(sys_exit_group , 1)
1856 MIPS_SYS(sys_lookup_dcookie, 3)
1857 MIPS_SYS(sys_epoll_create, 1)
1858 MIPS_SYS(sys_epoll_ctl , 4)
1859 MIPS_SYS(sys_epoll_wait , 3) /* 4250 */
1860 MIPS_SYS(sys_remap_file_pages, 5)
1861 MIPS_SYS(sys_set_tid_address, 1)
1862 MIPS_SYS(sys_restart_syscall, 0)
1863 MIPS_SYS(sys_fadvise64_64, 7)
1864 MIPS_SYS(sys_statfs64 , 3) /* 4255 */
1865 MIPS_SYS(sys_fstatfs64 , 2)
1866 MIPS_SYS(sys_timer_create, 3)
1867 MIPS_SYS(sys_timer_settime, 4)
1868 MIPS_SYS(sys_timer_gettime, 2)
1869 MIPS_SYS(sys_timer_getoverrun, 1) /* 4260 */
1870 MIPS_SYS(sys_timer_delete, 1)
1871 MIPS_SYS(sys_clock_settime, 2)
1872 MIPS_SYS(sys_clock_gettime, 2)
1873 MIPS_SYS(sys_clock_getres, 2)
1874 MIPS_SYS(sys_clock_nanosleep, 4) /* 4265 */
1875 MIPS_SYS(sys_tgkill , 3)
1876 MIPS_SYS(sys_utimes , 2)
1877 MIPS_SYS(sys_mbind , 4)
1878 MIPS_SYS(sys_ni_syscall , 0) /* sys_get_mempolicy */
1879 MIPS_SYS(sys_ni_syscall , 0) /* 4270 sys_set_mempolicy */
1880 MIPS_SYS(sys_mq_open , 4)
1881 MIPS_SYS(sys_mq_unlink , 1)
1882 MIPS_SYS(sys_mq_timedsend, 5)
1883 MIPS_SYS(sys_mq_timedreceive, 5)
1884 MIPS_SYS(sys_mq_notify , 2) /* 4275 */
1885 MIPS_SYS(sys_mq_getsetattr, 3)
1886 MIPS_SYS(sys_ni_syscall , 0) /* sys_vserver */
1887 MIPS_SYS(sys_waitid , 4)
1888 MIPS_SYS(sys_ni_syscall , 0) /* available, was setaltroot */
1889 MIPS_SYS(sys_add_key , 5)
1890 MIPS_SYS(sys_request_key, 4)
1891 MIPS_SYS(sys_keyctl , 5)
1892 MIPS_SYS(sys_set_thread_area, 1)
1893 MIPS_SYS(sys_inotify_init, 0)
1894 MIPS_SYS(sys_inotify_add_watch, 3) /* 4285 */
1895 MIPS_SYS(sys_inotify_rm_watch, 2)
1896 MIPS_SYS(sys_migrate_pages, 4)
1897 MIPS_SYS(sys_openat, 4)
1898 MIPS_SYS(sys_mkdirat, 3)
1899 MIPS_SYS(sys_mknodat, 4) /* 4290 */
1900 MIPS_SYS(sys_fchownat, 5)
1901 MIPS_SYS(sys_futimesat, 3)
1902 MIPS_SYS(sys_fstatat64, 4)
1903 MIPS_SYS(sys_unlinkat, 3)
1904 MIPS_SYS(sys_renameat, 4) /* 4295 */
1905 MIPS_SYS(sys_linkat, 5)
1906 MIPS_SYS(sys_symlinkat, 3)
1907 MIPS_SYS(sys_readlinkat, 4)
1908 MIPS_SYS(sys_fchmodat, 3)
1909 MIPS_SYS(sys_faccessat, 3) /* 4300 */
1910 MIPS_SYS(sys_pselect6, 6)
1911 MIPS_SYS(sys_ppoll, 5)
1912 MIPS_SYS(sys_unshare, 1)
1913 MIPS_SYS(sys_splice, 4)
1914 MIPS_SYS(sys_sync_file_range, 7) /* 4305 */
1915 MIPS_SYS(sys_tee, 4)
1916 MIPS_SYS(sys_vmsplice, 4)
1917 MIPS_SYS(sys_move_pages, 6)
1918 MIPS_SYS(sys_set_robust_list, 2)
1919 MIPS_SYS(sys_get_robust_list, 3) /* 4310 */
1920 MIPS_SYS(sys_kexec_load, 4)
1921 MIPS_SYS(sys_getcpu, 3)
1922 MIPS_SYS(sys_epoll_pwait, 6)
1923 MIPS_SYS(sys_ioprio_set, 3)
1924 MIPS_SYS(sys_ioprio_get, 2)
1925 };
1926
1927 #undef MIPS_SYS
1928
1929 static int do_store_exclusive(CPUMIPSState *env)
1930 {
1931 target_ulong addr;
1932 target_ulong page_addr;
1933 target_ulong val;
1934 int flags;
1935 int segv = 0;
1936 int reg;
1937 int d;
1938
1939 addr = env->lladdr;
1940 page_addr = addr & TARGET_PAGE_MASK;
1941 start_exclusive();
1942 mmap_lock();
1943 flags = page_get_flags(page_addr);
1944 if ((flags & PAGE_READ) == 0) {
1945 segv = 1;
1946 } else {
1947 reg = env->llreg & 0x1f;
1948 d = (env->llreg & 0x20) != 0;
1949 if (d) {
1950 segv = get_user_s64(val, addr);
1951 } else {
1952 segv = get_user_s32(val, addr);
1953 }
1954 if (!segv) {
1955 if (val != env->llval) {
1956 env->active_tc.gpr[reg] = 0;
1957 } else {
1958 if (d) {
1959 segv = put_user_u64(env->llnewval, addr);
1960 } else {
1961 segv = put_user_u32(env->llnewval, addr);
1962 }
1963 if (!segv) {
1964 env->active_tc.gpr[reg] = 1;
1965 }
1966 }
1967 }
1968 }
1969 env->lladdr = -1;
1970 if (!segv) {
1971 env->active_tc.PC += 4;
1972 }
1973 mmap_unlock();
1974 end_exclusive();
1975 return segv;
1976 }
1977
1978 void cpu_loop(CPUMIPSState *env)
1979 {
1980 target_siginfo_t info;
1981 int trapnr, ret;
1982 unsigned int syscall_num;
1983
1984 for(;;) {
1985 cpu_exec_start(env);
1986 trapnr = cpu_mips_exec(env);
1987 cpu_exec_end(env);
1988 switch(trapnr) {
1989 case EXCP_SYSCALL:
1990 syscall_num = env->active_tc.gpr[2] - 4000;
1991 env->active_tc.PC += 4;
1992 if (syscall_num >= sizeof(mips_syscall_args)) {
1993 ret = -ENOSYS;
1994 } else {
1995 int nb_args;
1996 abi_ulong sp_reg;
1997 abi_ulong arg5 = 0, arg6 = 0, arg7 = 0, arg8 = 0;
1998
1999 nb_args = mips_syscall_args[syscall_num];
2000 sp_reg = env->active_tc.gpr[29];
2001 switch (nb_args) {
2002 /* these arguments are taken from the stack */
2003 /* FIXME - what to do if get_user() fails? */
2004 case 8: get_user_ual(arg8, sp_reg + 28);
2005 case 7: get_user_ual(arg7, sp_reg + 24);
2006 case 6: get_user_ual(arg6, sp_reg + 20);
2007 case 5: get_user_ual(arg5, sp_reg + 16);
2008 default:
2009 break;
2010 }
2011 ret = do_syscall(env, env->active_tc.gpr[2],
2012 env->active_tc.gpr[4],
2013 env->active_tc.gpr[5],
2014 env->active_tc.gpr[6],
2015 env->active_tc.gpr[7],
2016 arg5, arg6/*, arg7, arg8*/);
2017 }
2018 if (ret == -TARGET_QEMU_ESIGRETURN) {
2019 /* Returning from a successful sigreturn syscall.
2020 Avoid clobbering register state. */
2021 break;
2022 }
2023 if ((unsigned int)ret >= (unsigned int)(-1133)) {
2024 env->active_tc.gpr[7] = 1; /* error flag */
2025 ret = -ret;
2026 } else {
2027 env->active_tc.gpr[7] = 0; /* error flag */
2028 }
2029 env->active_tc.gpr[2] = ret;
2030 break;
2031 case EXCP_TLBL:
2032 case EXCP_TLBS:
2033 info.si_signo = TARGET_SIGSEGV;
2034 info.si_errno = 0;
2035 /* XXX: check env->error_code */
2036 info.si_code = TARGET_SEGV_MAPERR;
2037 info._sifields._sigfault._addr = env->CP0_BadVAddr;
2038 queue_signal(env, info.si_signo, &info);
2039 break;
2040 case EXCP_CpU:
2041 case EXCP_RI:
2042 info.si_signo = TARGET_SIGILL;
2043 info.si_errno = 0;
2044 info.si_code = 0;
2045 queue_signal(env, info.si_signo, &info);
2046 break;
2047 case EXCP_INTERRUPT:
2048 /* just indicate that signals should be handled asap */
2049 break;
2050 case EXCP_DEBUG:
2051 {
2052 int sig;
2053
2054 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2055 if (sig)
2056 {
2057 info.si_signo = sig;
2058 info.si_errno = 0;
2059 info.si_code = TARGET_TRAP_BRKPT;
2060 queue_signal(env, info.si_signo, &info);
2061 }
2062 }
2063 break;
2064 case EXCP_SC:
2065 if (do_store_exclusive(env)) {
2066 info.si_signo = TARGET_SIGSEGV;
2067 info.si_errno = 0;
2068 info.si_code = TARGET_SEGV_MAPERR;
2069 info._sifields._sigfault._addr = env->active_tc.PC;
2070 queue_signal(env, info.si_signo, &info);
2071 }
2072 break;
2073 default:
2074 // error:
2075 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
2076 trapnr);
2077 cpu_dump_state(env, stderr, fprintf, 0);
2078 abort();
2079 }
2080 process_pending_signals(env);
2081 }
2082 }
2083 #endif
2084
2085 #ifdef TARGET_SH4
2086 void cpu_loop (CPUState *env)
2087 {
2088 int trapnr, ret;
2089 target_siginfo_t info;
2090
2091 while (1) {
2092 trapnr = cpu_sh4_exec (env);
2093
2094 switch (trapnr) {
2095 case 0x160:
2096 env->pc += 2;
2097 ret = do_syscall(env,
2098 env->gregs[3],
2099 env->gregs[4],
2100 env->gregs[5],
2101 env->gregs[6],
2102 env->gregs[7],
2103 env->gregs[0],
2104 env->gregs[1]);
2105 env->gregs[0] = ret;
2106 break;
2107 case EXCP_INTERRUPT:
2108 /* just indicate that signals should be handled asap */
2109 break;
2110 case EXCP_DEBUG:
2111 {
2112 int sig;
2113
2114 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2115 if (sig)
2116 {
2117 info.si_signo = sig;
2118 info.si_errno = 0;
2119 info.si_code = TARGET_TRAP_BRKPT;
2120 queue_signal(env, info.si_signo, &info);
2121 }
2122 }
2123 break;
2124 case 0xa0:
2125 case 0xc0:
2126 info.si_signo = SIGSEGV;
2127 info.si_errno = 0;
2128 info.si_code = TARGET_SEGV_MAPERR;
2129 info._sifields._sigfault._addr = env->tea;
2130 queue_signal(env, info.si_signo, &info);
2131 break;
2132
2133 default:
2134 printf ("Unhandled trap: 0x%x\n", trapnr);
2135 cpu_dump_state(env, stderr, fprintf, 0);
2136 exit (1);
2137 }
2138 process_pending_signals (env);
2139 }
2140 }
2141 #endif
2142
2143 #ifdef TARGET_CRIS
2144 void cpu_loop (CPUState *env)
2145 {
2146 int trapnr, ret;
2147 target_siginfo_t info;
2148
2149 while (1) {
2150 trapnr = cpu_cris_exec (env);
2151 switch (trapnr) {
2152 case 0xaa:
2153 {
2154 info.si_signo = SIGSEGV;
2155 info.si_errno = 0;
2156 /* XXX: check env->error_code */
2157 info.si_code = TARGET_SEGV_MAPERR;
2158 info._sifields._sigfault._addr = env->pregs[PR_EDA];
2159 queue_signal(env, info.si_signo, &info);
2160 }
2161 break;
2162 case EXCP_INTERRUPT:
2163 /* just indicate that signals should be handled asap */
2164 break;
2165 case EXCP_BREAK:
2166 ret = do_syscall(env,
2167 env->regs[9],
2168 env->regs[10],
2169 env->regs[11],
2170 env->regs[12],
2171 env->regs[13],
2172 env->pregs[7],
2173 env->pregs[11]);
2174 env->regs[10] = ret;
2175 break;
2176 case EXCP_DEBUG:
2177 {
2178 int sig;
2179
2180 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2181 if (sig)
2182 {
2183 info.si_signo = sig;
2184 info.si_errno = 0;
2185 info.si_code = TARGET_TRAP_BRKPT;
2186 queue_signal(env, info.si_signo, &info);
2187 }
2188 }
2189 break;
2190 default:
2191 printf ("Unhandled trap: 0x%x\n", trapnr);
2192 cpu_dump_state(env, stderr, fprintf, 0);
2193 exit (1);
2194 }
2195 process_pending_signals (env);
2196 }
2197 }
2198 #endif
2199
2200 #ifdef TARGET_MICROBLAZE
2201 void cpu_loop (CPUState *env)
2202 {
2203 int trapnr, ret;
2204 target_siginfo_t info;
2205
2206 while (1) {
2207 trapnr = cpu_mb_exec (env);
2208 switch (trapnr) {
2209 case 0xaa:
2210 {
2211 info.si_signo = SIGSEGV;
2212 info.si_errno = 0;
2213 /* XXX: check env->error_code */
2214 info.si_code = TARGET_SEGV_MAPERR;
2215 info._sifields._sigfault._addr = 0;
2216 queue_signal(env, info.si_signo, &info);
2217 }
2218 break;
2219 case EXCP_INTERRUPT:
2220 /* just indicate that signals should be handled asap */
2221 break;
2222 case EXCP_BREAK:
2223 /* Return address is 4 bytes after the call. */
2224 env->regs[14] += 4;
2225 ret = do_syscall(env,
2226 env->regs[12],
2227 env->regs[5],
2228 env->regs[6],
2229 env->regs[7],
2230 env->regs[8],
2231 env->regs[9],
2232 env->regs[10]);
2233 env->regs[3] = ret;
2234 env->sregs[SR_PC] = env->regs[14];
2235 break;
2236 case EXCP_HW_EXCP:
2237 env->regs[17] = env->sregs[SR_PC] + 4;
2238 if (env->iflags & D_FLAG) {
2239 env->sregs[SR_ESR] |= 1 << 12;
2240 env->sregs[SR_PC] -= 4;
2241 /* FIXME: if branch was immed, replay the imm aswell. */
2242 }
2243
2244 env->iflags &= ~(IMM_FLAG | D_FLAG);
2245
2246 switch (env->sregs[SR_ESR] & 31) {
2247 case ESR_EC_FPU:
2248 info.si_signo = SIGFPE;
2249 info.si_errno = 0;
2250 if (env->sregs[SR_FSR] & FSR_IO) {
2251 info.si_code = TARGET_FPE_FLTINV;
2252 }
2253 if (env->sregs[SR_FSR] & FSR_DZ) {
2254 info.si_code = TARGET_FPE_FLTDIV;
2255 }
2256 info._sifields._sigfault._addr = 0;
2257 queue_signal(env, info.si_signo, &info);
2258 break;
2259 default:
2260 printf ("Unhandled hw-exception: 0x%x\n",
2261 env->sregs[SR_ESR] & 5);
2262 cpu_dump_state(env, stderr, fprintf, 0);
2263 exit (1);
2264 break;
2265 }
2266 break;
2267 case EXCP_DEBUG:
2268 {
2269 int sig;
2270
2271 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2272 if (sig)
2273 {
2274 info.si_signo = sig;
2275 info.si_errno = 0;
2276 info.si_code = TARGET_TRAP_BRKPT;
2277 queue_signal(env, info.si_signo, &info);
2278 }
2279 }
2280 break;
2281 default:
2282 printf ("Unhandled trap: 0x%x\n", trapnr);
2283 cpu_dump_state(env, stderr, fprintf, 0);
2284 exit (1);
2285 }
2286 process_pending_signals (env);
2287 }
2288 }
2289 #endif
2290
2291 #ifdef TARGET_M68K
2292
2293 void cpu_loop(CPUM68KState *env)
2294 {
2295 int trapnr;
2296 unsigned int n;
2297 target_siginfo_t info;
2298 TaskState *ts = env->opaque;
2299
2300 for(;;) {
2301 trapnr = cpu_m68k_exec(env);
2302 switch(trapnr) {
2303 case EXCP_ILLEGAL:
2304 {
2305 if (ts->sim_syscalls) {
2306 uint16_t nr;
2307 nr = lduw(env->pc + 2);
2308 env->pc += 4;
2309 do_m68k_simcall(env, nr);
2310 } else {
2311 goto do_sigill;
2312 }
2313 }
2314 break;
2315 case EXCP_HALT_INSN:
2316 /* Semihosing syscall. */
2317 env->pc += 4;
2318 do_m68k_semihosting(env, env->dregs[0]);
2319 break;
2320 case EXCP_LINEA:
2321 case EXCP_LINEF:
2322 case EXCP_UNSUPPORTED:
2323 do_sigill:
2324 info.si_signo = SIGILL;
2325 info.si_errno = 0;
2326 info.si_code = TARGET_ILL_ILLOPN;
2327 info._sifields._sigfault._addr = env->pc;
2328 queue_signal(env, info.si_signo, &info);
2329 break;
2330 case EXCP_TRAP0:
2331 {
2332 ts->sim_syscalls = 0;
2333 n = env->dregs[0];
2334 env->pc += 2;
2335 env->dregs[0] = do_syscall(env,
2336 n,
2337 env->dregs[1],
2338 env->dregs[2],
2339 env->dregs[3],
2340 env->dregs[4],
2341 env->dregs[5],
2342 env->aregs[0]);
2343 }
2344 break;
2345 case EXCP_INTERRUPT:
2346 /* just indicate that signals should be handled asap */
2347 break;
2348 case EXCP_ACCESS:
2349 {
2350 info.si_signo = SIGSEGV;
2351 info.si_errno = 0;
2352 /* XXX: check env->error_code */
2353 info.si_code = TARGET_SEGV_MAPERR;
2354 info._sifields._sigfault._addr = env->mmu.ar;
2355 queue_signal(env, info.si_signo, &info);
2356 }
2357 break;
2358 case EXCP_DEBUG:
2359 {
2360 int sig;
2361
2362 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2363 if (sig)
2364 {
2365 info.si_signo = sig;
2366 info.si_errno = 0;
2367 info.si_code = TARGET_TRAP_BRKPT;
2368 queue_signal(env, info.si_signo, &info);
2369 }
2370 }
2371 break;
2372 default:
2373 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
2374 trapnr);
2375 cpu_dump_state(env, stderr, fprintf, 0);
2376 abort();
2377 }
2378 process_pending_signals(env);
2379 }
2380 }
2381 #endif /* TARGET_M68K */
2382
2383 #ifdef TARGET_ALPHA
2384 static void do_store_exclusive(CPUAlphaState *env, int reg, int quad)
2385 {
2386 target_ulong addr, val, tmp;
2387 target_siginfo_t info;
2388 int ret = 0;
2389
2390 addr = env->lock_addr;
2391 tmp = env->lock_st_addr;
2392 env->lock_addr = -1;
2393 env->lock_st_addr = 0;
2394
2395 start_exclusive();
2396 mmap_lock();
2397
2398 if (addr == tmp) {
2399 if (quad ? get_user_s64(val, addr) : get_user_s32(val, addr)) {
2400 goto do_sigsegv;
2401 }
2402
2403 if (val == env->lock_value) {
2404 tmp = env->ir[reg];
2405 if (quad ? put_user_u64(tmp, addr) : put_user_u32(tmp, addr)) {
2406 goto do_sigsegv;
2407 }
2408 ret = 1;
2409 }
2410 }
2411 env->ir[reg] = ret;
2412 env->pc += 4;
2413
2414 mmap_unlock();
2415 end_exclusive();
2416 return;
2417
2418 do_sigsegv:
2419 mmap_unlock();
2420 end_exclusive();
2421
2422 info.si_signo = TARGET_SIGSEGV;
2423 info.si_errno = 0;
2424 info.si_code = TARGET_SEGV_MAPERR;
2425 info._sifields._sigfault._addr = addr;
2426 queue_signal(env, TARGET_SIGSEGV, &info);
2427 }
2428
2429 void cpu_loop (CPUState *env)
2430 {
2431 int trapnr;
2432 target_siginfo_t info;
2433 abi_long sysret;
2434
2435 while (1) {
2436 trapnr = cpu_alpha_exec (env);
2437
2438 /* All of the traps imply a transition through PALcode, which
2439 implies an REI instruction has been executed. Which means
2440 that the intr_flag should be cleared. */
2441 env->intr_flag = 0;
2442
2443 switch (trapnr) {
2444 case EXCP_RESET:
2445 fprintf(stderr, "Reset requested. Exit\n");
2446 exit(1);
2447 break;
2448 case EXCP_MCHK:
2449 fprintf(stderr, "Machine check exception. Exit\n");
2450 exit(1);
2451 break;
2452 case EXCP_ARITH:
2453 env->lock_addr = -1;
2454 info.si_signo = TARGET_SIGFPE;
2455 info.si_errno = 0;
2456 info.si_code = TARGET_FPE_FLTINV;
2457 info._sifields._sigfault._addr = env->pc;
2458 queue_signal(env, info.si_signo, &info);
2459 break;
2460 case EXCP_HW_INTERRUPT:
2461 fprintf(stderr, "External interrupt. Exit\n");
2462 exit(1);
2463 break;
2464 case EXCP_DFAULT:
2465 env->lock_addr = -1;
2466 info.si_signo = TARGET_SIGSEGV;
2467 info.si_errno = 0;
2468 info.si_code = (page_get_flags(env->ipr[IPR_EXC_ADDR]) & PAGE_VALID
2469 ? TARGET_SEGV_ACCERR : TARGET_SEGV_MAPERR);
2470 info._sifields._sigfault._addr = env->ipr[IPR_EXC_ADDR];
2471 queue_signal(env, info.si_signo, &info);
2472 break;
2473 case EXCP_DTB_MISS_PAL:
2474 fprintf(stderr, "MMU data TLB miss in PALcode\n");
2475 exit(1);
2476 break;
2477 case EXCP_ITB_MISS:
2478 fprintf(stderr, "MMU instruction TLB miss\n");
2479 exit(1);
2480 break;
2481 case EXCP_ITB_ACV:
2482 fprintf(stderr, "MMU instruction access violation\n");
2483 exit(1);
2484 break;
2485 case EXCP_DTB_MISS_NATIVE:
2486 fprintf(stderr, "MMU data TLB miss\n");
2487 exit(1);
2488 break;
2489 case EXCP_UNALIGN:
2490 env->lock_addr = -1;
2491 info.si_signo = TARGET_SIGBUS;
2492 info.si_errno = 0;
2493 info.si_code = TARGET_BUS_ADRALN;
2494 info._sifields._sigfault._addr = env->ipr[IPR_EXC_ADDR];
2495 queue_signal(env, info.si_signo, &info);
2496 break;
2497 case EXCP_OPCDEC:
2498 do_sigill:
2499 env->lock_addr = -1;
2500 info.si_signo = TARGET_SIGILL;
2501 info.si_errno = 0;
2502 info.si_code = TARGET_ILL_ILLOPC;
2503 info._sifields._sigfault._addr = env->pc;
2504 queue_signal(env, info.si_signo, &info);
2505 break;
2506 case EXCP_FEN:
2507 /* No-op. Linux simply re-enables the FPU. */
2508 break;
2509 case EXCP_CALL_PAL ... (EXCP_CALL_PALP - 1):
2510 env->lock_addr = -1;
2511 switch ((trapnr >> 6) | 0x80) {
2512 case 0x80:
2513 /* BPT */
2514 info.si_signo = TARGET_SIGTRAP;
2515 info.si_errno = 0;
2516 info.si_code = TARGET_TRAP_BRKPT;
2517 info._sifields._sigfault._addr = env->pc;
2518 queue_signal(env, info.si_signo, &info);
2519 break;
2520 case 0x81:
2521 /* BUGCHK */
2522 info.si_signo = TARGET_SIGTRAP;
2523 info.si_errno = 0;
2524 info.si_code = 0;
2525 info._sifields._sigfault._addr = env->pc;
2526 queue_signal(env, info.si_signo, &info);
2527 break;
2528 case 0x83:
2529 /* CALLSYS */
2530 trapnr = env->ir[IR_V0];
2531 sysret = do_syscall(env, trapnr,
2532 env->ir[IR_A0], env->ir[IR_A1],
2533 env->ir[IR_A2], env->ir[IR_A3],
2534 env->ir[IR_A4], env->ir[IR_A5]);
2535 if (trapnr == TARGET_NR_sigreturn
2536 || trapnr == TARGET_NR_rt_sigreturn) {
2537 break;
2538 }
2539 /* Syscall writes 0 to V0 to bypass error check, similar
2540 to how this is handled internal to Linux kernel. */
2541 if (env->ir[IR_V0] == 0) {
2542 env->ir[IR_V0] = sysret;
2543 } else {
2544 env->ir[IR_V0] = (sysret < 0 ? -sysret : sysret);
2545 env->ir[IR_A3] = (sysret < 0);
2546 }
2547 break;
2548 case 0x86:
2549 /* IMB */
2550 /* ??? We can probably elide the code using page_unprotect
2551 that is checking for self-modifying code. Instead we
2552 could simply call tb_flush here. Until we work out the
2553 changes required to turn off the extra write protection,
2554 this can be a no-op. */
2555 break;
2556 case 0x9E:
2557 /* RDUNIQUE */
2558 /* Handled in the translator for usermode. */
2559 abort();
2560 case 0x9F:
2561 /* WRUNIQUE */
2562 /* Handled in the translator for usermode. */
2563 abort();
2564 case 0xAA:
2565 /* GENTRAP */
2566 info.si_signo = TARGET_SIGFPE;
2567 switch (env->ir[IR_A0]) {
2568 case TARGET_GEN_INTOVF:
2569 info.si_code = TARGET_FPE_INTOVF;
2570 break;
2571 case TARGET_GEN_INTDIV:
2572 info.si_code = TARGET_FPE_INTDIV;
2573 break;
2574 case TARGET_GEN_FLTOVF:
2575 info.si_code = TARGET_FPE_FLTOVF;
2576 break;
2577 case TARGET_GEN_FLTUND:
2578 info.si_code = TARGET_FPE_FLTUND;
2579 break;
2580 case TARGET_GEN_FLTINV:
2581 info.si_code = TARGET_FPE_FLTINV;
2582 break;
2583 case TARGET_GEN_FLTINE:
2584 info.si_code = TARGET_FPE_FLTRES;
2585 break;
2586 case TARGET_GEN_ROPRAND:
2587 info.si_code = 0;
2588 break;
2589 default:
2590 info.si_signo = TARGET_SIGTRAP;
2591 info.si_code = 0;
2592 break;
2593 }
2594 info.si_errno = 0;
2595 info._sifields._sigfault._addr = env->pc;
2596 queue_signal(env, info.si_signo, &info);
2597 break;
2598 default:
2599 goto do_sigill;
2600 }
2601 break;
2602 case EXCP_CALL_PALP ... (EXCP_CALL_PALE - 1):
2603 goto do_sigill;
2604 case EXCP_DEBUG:
2605 info.si_signo = gdb_handlesig (env, TARGET_SIGTRAP);
2606 if (info.si_signo) {
2607 env->lock_addr = -1;
2608 info.si_errno = 0;
2609 info.si_code = TARGET_TRAP_BRKPT;
2610 queue_signal(env, info.si_signo, &info);
2611 }
2612 break;
2613 case EXCP_STL_C:
2614 case EXCP_STQ_C:
2615 do_store_exclusive(env, env->error_code, trapnr - EXCP_STL_C);
2616 break;
2617 default:
2618 printf ("Unhandled trap: 0x%x\n", trapnr);
2619 cpu_dump_state(env, stderr, fprintf, 0);
2620 exit (1);
2621 }
2622 process_pending_signals (env);
2623 }
2624 }
2625 #endif /* TARGET_ALPHA */
2626
2627 static void usage(void)
2628 {
2629 printf("qemu-" TARGET_ARCH " version " QEMU_VERSION QEMU_PKGVERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n"
2630 "usage: qemu-" TARGET_ARCH " [options] program [arguments...]\n"
2631 "Linux CPU emulator (compiled for %s emulation)\n"
2632 "\n"
2633 "Standard options:\n"
2634 "-h print this help\n"
2635 "-g port wait gdb connection to port\n"
2636 "-L path set the elf interpreter prefix (default=%s)\n"
2637 "-s size set the stack size in bytes (default=%ld)\n"
2638 "-cpu model select CPU (-cpu ? for list)\n"
2639 "-drop-ld-preload drop LD_PRELOAD for target process\n"
2640 "-E var=value sets/modifies targets environment variable(s)\n"
2641 "-U var unsets targets environment variable(s)\n"
2642 "-0 argv0 forces target process argv[0] to be argv0\n"
2643 #if defined(CONFIG_USE_GUEST_BASE)
2644 "-B address set guest_base address to address\n"
2645 "-R size reserve size bytes for guest virtual address space\n"
2646 #endif
2647 "\n"
2648 "Debug options:\n"
2649 "-d options activate log (logfile=%s)\n"
2650 "-p pagesize set the host page size to 'pagesize'\n"
2651 "-singlestep always run in singlestep mode\n"
2652 "-strace log system calls\n"
2653 "\n"
2654 "Environment variables:\n"
2655 "QEMU_STRACE Print system calls and arguments similar to the\n"
2656 " 'strace' program. Enable by setting to any value.\n"
2657 "You can use -E and -U options to set/unset environment variables\n"
2658 "for target process. It is possible to provide several variables\n"
2659 "by repeating the option. For example:\n"
2660 " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
2661 "Note that if you provide several changes to single variable\n"
2662 "last change will stay in effect.\n"
2663 ,
2664 TARGET_ARCH,
2665 interp_prefix,
2666 guest_stack_size,
2667 DEBUG_LOGFILE);
2668 exit(1);
2669 }
2670
2671 THREAD CPUState *thread_env;
2672
2673 void task_settid(TaskState *ts)
2674 {
2675 if (ts->ts_tid == 0) {
2676 #ifdef CONFIG_USE_NPTL
2677 ts->ts_tid = (pid_t)syscall(SYS_gettid);
2678 #else
2679 /* when no threads are used, tid becomes pid */
2680 ts->ts_tid = getpid();
2681 #endif
2682 }
2683 }
2684
2685 void stop_all_tasks(void)
2686 {
2687 /*
2688 * We trust that when using NPTL, start_exclusive()
2689 * handles thread stopping correctly.
2690 */
2691 start_exclusive();
2692 }
2693
2694 /* Assumes contents are already zeroed. */
2695 void init_task_state(TaskState *ts)
2696 {
2697 int i;
2698
2699 ts->used = 1;
2700 ts->first_free = ts->sigqueue_table;
2701 for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) {
2702 ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1];
2703 }
2704 ts->sigqueue_table[i].next = NULL;
2705 }
2706
2707 int main(int argc, char **argv, char **envp)
2708 {
2709 const char *filename;
2710 const char *cpu_model;
2711 struct target_pt_regs regs1, *regs = &regs1;
2712 struct image_info info1, *info = &info1;
2713 struct linux_binprm bprm;
2714 TaskState ts1, *ts = &ts1;
2715 CPUState *env;
2716 int optind;
2717 const char *r;
2718 int gdbstub_port = 0;
2719 char **target_environ, **wrk;
2720 char **target_argv;
2721 int target_argc;
2722 envlist_t *envlist = NULL;
2723 const char *argv0 = NULL;
2724 int i;
2725 int ret;
2726
2727 if (argc <= 1)
2728 usage();
2729
2730 qemu_cache_utils_init(envp);
2731
2732 /* init debug */
2733 cpu_set_log_filename(DEBUG_LOGFILE);
2734
2735 if ((envlist = envlist_create()) == NULL) {
2736 (void) fprintf(stderr, "Unable to allocate envlist\n");
2737 exit(1);
2738 }
2739
2740 /* add current environment into the list */
2741 for (wrk = environ; *wrk != NULL; wrk++) {
2742 (void) envlist_setenv(envlist, *wrk);
2743 }
2744
2745 /* Read the stack limit from the kernel. If it's "unlimited",
2746 then we can do little else besides use the default. */
2747 {
2748 struct rlimit lim;
2749 if (getrlimit(RLIMIT_STACK, &lim) == 0
2750 && lim.rlim_cur != RLIM_INFINITY
2751 && lim.rlim_cur == (target_long)lim.rlim_cur) {
2752 guest_stack_size = lim.rlim_cur;
2753 }
2754 }
2755
2756 cpu_model = NULL;
2757 #if defined(cpudef_setup)
2758 cpudef_setup(); /* parse cpu definitions in target config file (TBD) */
2759 #endif
2760
2761 optind = 1;
2762 for(;;) {
2763 if (optind >= argc)
2764 break;
2765 r = argv[optind];
2766 if (r[0] != '-')
2767 break;
2768 optind++;
2769 r++;
2770 if (!strcmp(r, "-")) {
2771 break;
2772 } else if (!strcmp(r, "d")) {
2773 int mask;
2774 const CPULogItem *item;
2775
2776 if (optind >= argc)
2777 break;
2778
2779 r = argv[optind++];
2780 mask = cpu_str_to_log_mask(r);
2781 if (!mask) {
2782 printf("Log items (comma separated):\n");
2783 for(item = cpu_log_items; item->mask != 0; item++) {
2784 printf("%-10s %s\n", item->name, item->help);
2785 }
2786 exit(1);
2787 }
2788 cpu_set_log(mask);
2789 } else if (!strcmp(r, "E")) {
2790 r = argv[optind++];
2791 if (envlist_setenv(envlist, r) != 0)
2792 usage();
2793 } else if (!strcmp(r, "ignore-environment")) {
2794 envlist_free(envlist);
2795 if ((envlist = envlist_create()) == NULL) {
2796 (void) fprintf(stderr, "Unable to allocate envlist\n");
2797 exit(1);
2798 }
2799 } else if (!strcmp(r, "U")) {
2800 r = argv[optind++];
2801 if (envlist_unsetenv(envlist, r) != 0)
2802 usage();
2803 } else if (!strcmp(r, "0")) {
2804 r = argv[optind++];
2805 argv0 = r;
2806 } else if (!strcmp(r, "s")) {
2807 if (optind >= argc)
2808 break;
2809 r = argv[optind++];
2810 guest_stack_size = strtoul(r, (char **)&r, 0);
2811 if (guest_stack_size == 0)
2812 usage();
2813 if (*r == 'M')
2814 guest_stack_size *= 1024 * 1024;
2815 else if (*r == 'k' || *r == 'K')
2816 guest_stack_size *= 1024;
2817 } else if (!strcmp(r, "L")) {
2818 interp_prefix = argv[optind++];
2819 } else if (!strcmp(r, "p")) {
2820 if (optind >= argc)
2821 break;
2822 qemu_host_page_size = atoi(argv[optind++]);
2823 if (qemu_host_page_size == 0 ||
2824 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
2825 fprintf(stderr, "page size must be a power of two\n");
2826 exit(1);
2827 }
2828 } else if (!strcmp(r, "g")) {
2829 if (optind >= argc)
2830 break;
2831 gdbstub_port = atoi(argv[optind++]);
2832 } else if (!strcmp(r, "r")) {
2833 qemu_uname_release = argv[optind++];
2834 } else if (!strcmp(r, "cpu")) {
2835 cpu_model = argv[optind++];
2836 if (cpu_model == NULL || strcmp(cpu_model, "?") == 0) {
2837 /* XXX: implement xxx_cpu_list for targets that still miss it */
2838 #if defined(cpu_list_id)
2839 cpu_list_id(stdout, &fprintf, "");
2840 #elif defined(cpu_list)
2841 cpu_list(stdout, &fprintf); /* deprecated */
2842 #endif
2843 exit(1);
2844 }
2845 #if defined(CONFIG_USE_GUEST_BASE)
2846 } else if (!strcmp(r, "B")) {
2847 guest_base = strtol(argv[optind++], NULL, 0);
2848 have_guest_base = 1;
2849 } else if (!strcmp(r, "R")) {
2850 char *p;
2851 int shift = 0;
2852 reserved_va = strtoul(argv[optind++], &p, 0);
2853 switch (*p) {
2854 case 'k':
2855 case 'K':
2856 shift = 10;
2857 break;
2858 case 'M':
2859 shift = 20;
2860 break;
2861 case 'G':
2862 shift = 30;
2863 break;
2864 }
2865 if (shift) {
2866 unsigned long unshifted = reserved_va;
2867 p++;
2868 reserved_va <<= shift;
2869 if (((reserved_va >> shift) != unshifted)
2870 #if HOST_LONG_BITS > TARGET_VIRT_ADDR_SPACE_BITS
2871 || (reserved_va > (1ul << TARGET_VIRT_ADDR_SPACE_BITS))
2872 #endif
2873 ) {
2874 fprintf(stderr, "Reserved virtual address too big\n");
2875 exit(1);
2876 }
2877 }
2878 if (*p) {
2879 fprintf(stderr, "Unrecognised -R size suffix '%s'\n", p);
2880 exit(1);
2881 }
2882 #endif
2883 } else if (!strcmp(r, "drop-ld-preload")) {
2884 (void) envlist_unsetenv(envlist, "LD_PRELOAD");
2885 } else if (!strcmp(r, "singlestep")) {
2886 singlestep = 1;
2887 } else if (!strcmp(r, "strace")) {
2888 do_strace = 1;
2889 } else
2890 {
2891 usage();
2892 }
2893 }
2894 if (optind >= argc)
2895 usage();
2896 filename = argv[optind];
2897 exec_path = argv[optind];
2898
2899 /* Zero out regs */
2900 memset(regs, 0, sizeof(struct target_pt_regs));
2901
2902 /* Zero out image_info */
2903 memset(info, 0, sizeof(struct image_info));
2904
2905 memset(&bprm, 0, sizeof (bprm));
2906
2907 /* Scan interp_prefix dir for replacement files. */
2908 init_paths(interp_prefix);
2909
2910 if (cpu_model == NULL) {
2911 #if defined(TARGET_I386)
2912 #ifdef TARGET_X86_64
2913 cpu_model = "qemu64";
2914 #else
2915 cpu_model = "qemu32";
2916 #endif
2917 #elif defined(TARGET_ARM)
2918 cpu_model = "any";
2919 #elif defined(TARGET_M68K)
2920 cpu_model = "any";
2921 #elif defined(TARGET_SPARC)
2922 #ifdef TARGET_SPARC64
2923 cpu_model = "TI UltraSparc II";
2924 #else
2925 cpu_model = "Fujitsu MB86904";
2926 #endif
2927 #elif defined(TARGET_MIPS)
2928 #if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64)
2929 cpu_model = "20Kc";
2930 #else
2931 cpu_model = "24Kf";
2932 #endif
2933 #elif defined(TARGET_PPC)
2934 #ifdef TARGET_PPC64
2935 cpu_model = "970fx";
2936 #else
2937 cpu_model = "750";
2938 #endif
2939 #else
2940 cpu_model = "any";
2941 #endif
2942 }
2943 cpu_exec_init_all(0);
2944 /* NOTE: we need to init the CPU at this stage to get
2945 qemu_host_page_size */
2946 env = cpu_init(cpu_model);
2947 if (!env) {
2948 fprintf(stderr, "Unable to find CPU definition\n");
2949 exit(1);
2950 }
2951 #if defined(TARGET_I386) || defined(TARGET_SPARC) || defined(TARGET_PPC)
2952 cpu_reset(env);
2953 #endif
2954
2955 thread_env = env;
2956
2957 if (getenv("QEMU_STRACE")) {
2958 do_strace = 1;
2959 }
2960
2961 target_environ = envlist_to_environ(envlist, NULL);
2962 envlist_free(envlist);
2963
2964 #if defined(CONFIG_USE_GUEST_BASE)
2965 /*
2966 * Now that page sizes are configured in cpu_init() we can do
2967 * proper page alignment for guest_base.
2968 */
2969 guest_base = HOST_PAGE_ALIGN(guest_base);
2970
2971 if (reserved_va) {
2972 void *p;
2973 int flags;
2974
2975 flags = MAP_ANONYMOUS | MAP_PRIVATE | MAP_NORESERVE;
2976 if (have_guest_base) {
2977 flags |= MAP_FIXED;
2978 }
2979 p = mmap((void *)guest_base, reserved_va, PROT_NONE, flags, -1, 0);
2980 if (p == MAP_FAILED) {
2981 fprintf(stderr, "Unable to reserve guest address space\n");
2982 exit(1);
2983 }
2984 guest_base = (unsigned long)p;
2985 /* Make sure the address is properly aligned. */
2986 if (guest_base & ~qemu_host_page_mask) {
2987 munmap(p, reserved_va);
2988 p = mmap((void *)guest_base, reserved_va + qemu_host_page_size,
2989 PROT_NONE, flags, -1, 0);
2990 if (p == MAP_FAILED) {
2991 fprintf(stderr, "Unable to reserve guest address space\n");
2992 exit(1);
2993 }
2994 guest_base = HOST_PAGE_ALIGN((unsigned long)p);
2995 }
2996 qemu_log("Reserved 0x%lx bytes of guest address space\n", reserved_va);
2997 }
2998 #endif /* CONFIG_USE_GUEST_BASE */
2999
3000 /*
3001 * Read in mmap_min_addr kernel parameter. This value is used
3002 * When loading the ELF image to determine whether guest_base
3003 * is needed. It is also used in mmap_find_vma.
3004 */
3005 {
3006 FILE *fp;
3007
3008 if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) {
3009 unsigned long tmp;
3010 if (fscanf(fp, "%lu", &tmp) == 1) {
3011 mmap_min_addr = tmp;
3012 qemu_log("host mmap_min_addr=0x%lx\n", mmap_min_addr);
3013 }
3014 fclose(fp);
3015 }
3016 }
3017
3018 /*
3019 * Prepare copy of argv vector for target.
3020 */
3021 target_argc = argc - optind;
3022 target_argv = calloc(target_argc + 1, sizeof (char *));
3023 if (target_argv == NULL) {
3024 (void) fprintf(stderr, "Unable to allocate memory for target_argv\n");
3025 exit(1);
3026 }
3027
3028 /*
3029 * If argv0 is specified (using '-0' switch) we replace
3030 * argv[0] pointer with the given one.
3031 */
3032 i = 0;
3033 if (argv0 != NULL) {
3034 target_argv[i++] = strdup(argv0);
3035 }
3036 for (; i < target_argc; i++) {
3037 target_argv[i] = strdup(argv[optind + i]);
3038 }
3039 target_argv[target_argc] = NULL;
3040
3041 memset(ts, 0, sizeof(TaskState));
3042 init_task_state(ts);
3043 /* build Task State */
3044 ts->info = info;
3045 ts->bprm = &bprm;
3046 env->opaque = ts;
3047 task_settid(ts);
3048
3049 ret = loader_exec(filename, target_argv, target_environ, regs,
3050 info, &bprm);
3051 if (ret != 0) {
3052 printf("Error %d while loading %s\n", ret, filename);
3053 _exit(1);
3054 }
3055
3056 for (i = 0; i < target_argc; i++) {
3057 free(target_argv[i]);
3058 }
3059 free(target_argv);
3060
3061 for (wrk = target_environ; *wrk; wrk++) {
3062 free(*wrk);
3063 }
3064
3065 free(target_environ);
3066
3067 if (qemu_log_enabled()) {
3068 #if defined(CONFIG_USE_GUEST_BASE)
3069 qemu_log("guest_base 0x%lx\n", guest_base);
3070 #endif
3071 log_page_dump();
3072
3073 qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
3074 qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code);
3075 qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n",
3076 info->start_code);
3077 qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n",
3078 info->start_data);
3079 qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data);
3080 qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n",
3081 info->start_stack);
3082 qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
3083 qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
3084 }
3085
3086 target_set_brk(info->brk);
3087 syscall_init();
3088 signal_init();
3089
3090 #if defined(CONFIG_USE_GUEST_BASE)
3091 /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay
3092 generating the prologue until now so that the prologue can take
3093 the real value of GUEST_BASE into account. */
3094 tcg_prologue_init(&tcg_ctx);
3095 #endif
3096
3097 #if defined(TARGET_I386)
3098 cpu_x86_set_cpl(env, 3);
3099
3100 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
3101 env->hflags |= HF_PE_MASK;
3102 if (env->cpuid_features & CPUID_SSE) {
3103 env->cr[4] |= CR4_OSFXSR_MASK;
3104 env->hflags |= HF_OSFXSR_MASK;
3105 }
3106 #ifndef TARGET_ABI32
3107 /* enable 64 bit mode if possible */
3108 if (!(env->cpuid_ext2_features & CPUID_EXT2_LM)) {
3109 fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
3110 exit(1);
3111 }
3112 env->cr[4] |= CR4_PAE_MASK;
3113 env->efer |= MSR_EFER_LMA | MSR_EFER_LME;
3114 env->hflags |= HF_LMA_MASK;
3115 #endif
3116
3117 /* flags setup : we activate the IRQs by default as in user mode */
3118 env->eflags |= IF_MASK;
3119
3120 /* linux register setup */
3121 #ifndef TARGET_ABI32
3122 env->regs[R_EAX] = regs->rax;
3123 env->regs[R_EBX] = regs->rbx;
3124 env->regs[R_ECX] = regs->rcx;
3125 env->regs[R_EDX] = regs->rdx;
3126 env->regs[R_ESI] = regs->rsi;
3127 env->regs[R_EDI] = regs->rdi;
3128 env->regs[R_EBP] = regs->rbp;
3129 env->regs[R_ESP] = regs->rsp;
3130 env->eip = regs->rip;
3131 #else
3132 env->regs[R_EAX] = regs->eax;
3133 env->regs[R_EBX] = regs->ebx;
3134 env->regs[R_ECX] = regs->ecx;
3135 env->regs[R_EDX] = regs->edx;
3136 env->regs[R_ESI] = regs->esi;
3137 env->regs[R_EDI] = regs->edi;
3138 env->regs[R_EBP] = regs->ebp;
3139 env->regs[R_ESP] = regs->esp;
3140 env->eip = regs->eip;
3141 #endif
3142
3143 /* linux interrupt setup */
3144 #ifndef TARGET_ABI32
3145 env->idt.limit = 511;
3146 #else
3147 env->idt.limit = 255;
3148 #endif
3149 env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1),
3150 PROT_READ|PROT_WRITE,
3151 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
3152 idt_table = g2h(env->idt.base);
3153 set_idt(0, 0);
3154 set_idt(1, 0);
3155 set_idt(2, 0);
3156 set_idt(3, 3);
3157 set_idt(4, 3);
3158 set_idt(5, 0);
3159 set_idt(6, 0);
3160 set_idt(7, 0);
3161 set_idt(8, 0);
3162 set_idt(9, 0);
3163 set_idt(10, 0);
3164 set_idt(11, 0);
3165 set_idt(12, 0);
3166 set_idt(13, 0);
3167 set_idt(14, 0);
3168 set_idt(15, 0);
3169 set_idt(16, 0);
3170 set_idt(17, 0);
3171 set_idt(18, 0);
3172 set_idt(19, 0);
3173 set_idt(0x80, 3);
3174
3175 /* linux segment setup */
3176 {
3177 uint64_t *gdt_table;
3178 env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES,
3179 PROT_READ|PROT_WRITE,
3180 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
3181 env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1;
3182 gdt_table = g2h(env->gdt.base);
3183 #ifdef TARGET_ABI32
3184 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
3185 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
3186 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
3187 #else
3188 /* 64 bit code segment */
3189 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
3190 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
3191 DESC_L_MASK |
3192 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
3193 #endif
3194 write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
3195 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
3196 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
3197 }
3198 cpu_x86_load_seg(env, R_CS, __USER_CS);
3199 cpu_x86_load_seg(env, R_SS, __USER_DS);
3200 #ifdef TARGET_ABI32
3201 cpu_x86_load_seg(env, R_DS, __USER_DS);
3202 cpu_x86_load_seg(env, R_ES, __USER_DS);
3203 cpu_x86_load_seg(env, R_FS, __USER_DS);
3204 cpu_x86_load_seg(env, R_GS, __USER_DS);
3205 /* This hack makes Wine work... */
3206 env->segs[R_FS].selector = 0;
3207 #else
3208 cpu_x86_load_seg(env, R_DS, 0);
3209 cpu_x86_load_seg(env, R_ES, 0);
3210 cpu_x86_load_seg(env, R_FS, 0);
3211 cpu_x86_load_seg(env, R_GS, 0);
3212 #endif
3213 #elif defined(TARGET_ARM)
3214 {
3215 int i;
3216 cpsr_write(env, regs->uregs[16], 0xffffffff);
3217 for(i = 0; i < 16; i++) {
3218 env->regs[i] = regs->uregs[i];
3219 }
3220 }
3221 #elif defined(TARGET_SPARC)
3222 {
3223 int i;
3224 env->pc = regs->pc;
3225 env->npc = regs->npc;
3226 env->y = regs->y;
3227 for(i = 0; i < 8; i++)
3228 env->gregs[i] = regs->u_regs[i];
3229 for(i = 0; i < 8; i++)
3230 env->regwptr[i] = regs->u_regs[i + 8];
3231 }
3232 #elif defined(TARGET_PPC)
3233 {
3234 int i;
3235
3236 #if defined(TARGET_PPC64)
3237 #if defined(TARGET_ABI32)
3238 env->msr &= ~((target_ulong)1 << MSR_SF);
3239 #else
3240 env->msr |= (target_ulong)1 << MSR_SF;
3241 #endif
3242 #endif
3243 env->nip = regs->nip;
3244 for(i = 0; i < 32; i++) {
3245 env->gpr[i] = regs->gpr[i];
3246 }
3247 }
3248 #elif defined(TARGET_M68K)
3249 {
3250 env->pc = regs->pc;
3251 env->dregs[0] = regs->d0;
3252 env->dregs[1] = regs->d1;
3253 env->dregs[2] = regs->d2;
3254 env->dregs[3] = regs->d3;
3255 env->dregs[4] = regs->d4;
3256 env->dregs[5] = regs->d5;
3257 env->dregs[6] = regs->d6;
3258 env->dregs[7] = regs->d7;
3259 env->aregs[0] = regs->a0;
3260 env->aregs[1] = regs->a1;
3261 env->aregs[2] = regs->a2;
3262 env->aregs[3] = regs->a3;
3263 env->aregs[4] = regs->a4;
3264 env->aregs[5] = regs->a5;
3265 env->aregs[6] = regs->a6;
3266 env->aregs[7] = regs->usp;
3267 env->sr = regs->sr;
3268 ts->sim_syscalls = 1;
3269 }
3270 #elif defined(TARGET_MICROBLAZE)
3271 {
3272 env->regs[0] = regs->r0;
3273 env->regs[1] = regs->r1;
3274 env->regs[2] = regs->r2;
3275 env->regs[3] = regs->r3;
3276 env->regs[4] = regs->r4;
3277 env->regs[5] = regs->r5;
3278 env->regs[6] = regs->r6;
3279 env->regs[7] = regs->r7;
3280 env->regs[8] = regs->r8;
3281 env->regs[9] = regs->r9;
3282 env->regs[10] = regs->r10;
3283 env->regs[11] = regs->r11;
3284 env->regs[12] = regs->r12;
3285 env->regs[13] = regs->r13;
3286 env->regs[14] = regs->r14;
3287 env->regs[15] = regs->r15;
3288 env->regs[16] = regs->r16;
3289 env->regs[17] = regs->r17;
3290 env->regs[18] = regs->r18;
3291 env->regs[19] = regs->r19;
3292 env->regs[20] = regs->r20;
3293 env->regs[21] = regs->r21;
3294 env->regs[22] = regs->r22;
3295 env->regs[23] = regs->r23;
3296 env->regs[24] = regs->r24;
3297 env->regs[25] = regs->r25;
3298 env->regs[26] = regs->r26;
3299 env->regs[27] = regs->r27;
3300 env->regs[28] = regs->r28;
3301 env->regs[29] = regs->r29;
3302 env->regs[30] = regs->r30;
3303 env->regs[31] = regs->r31;
3304 env->sregs[SR_PC] = regs->pc;
3305 }
3306 #elif defined(TARGET_MIPS)
3307 {
3308 int i;
3309
3310 for(i = 0; i < 32; i++) {
3311 env->active_tc.gpr[i] = regs->regs[i];
3312 }
3313 env->active_tc.PC = regs->cp0_epc & ~(target_ulong)1;
3314 if (regs->cp0_epc & 1) {
3315 env->hflags |= MIPS_HFLAG_M16;
3316 }
3317 }
3318 #elif defined(TARGET_SH4)
3319 {
3320 int i;
3321
3322 for(i = 0; i < 16; i++) {
3323 env->gregs[i] = regs->regs[i];
3324 }
3325 env->pc = regs->pc;
3326 }
3327 #elif defined(TARGET_ALPHA)
3328 {
3329 int i;
3330
3331 for(i = 0; i < 28; i++) {
3332 env->ir[i] = ((abi_ulong *)regs)[i];
3333 }
3334 env->ir[IR_SP] = regs->usp;
3335 env->pc = regs->pc;
3336 }
3337 #elif defined(TARGET_CRIS)
3338 {
3339 env->regs[0] = regs->r0;
3340 env->regs[1] = regs->r1;
3341 env->regs[2] = regs->r2;
3342 env->regs[3] = regs->r3;
3343 env->regs[4] = regs->r4;
3344 env->regs[5] = regs->r5;
3345 env->regs[6] = regs->r6;
3346 env->regs[7] = regs->r7;
3347 env->regs[8] = regs->r8;
3348 env->regs[9] = regs->r9;
3349 env->regs[10] = regs->r10;
3350 env->regs[11] = regs->r11;
3351 env->regs[12] = regs->r12;
3352 env->regs[13] = regs->r13;
3353 env->regs[14] = info->start_stack;
3354 env->regs[15] = regs->acr;
3355 env->pc = regs->erp;
3356 }
3357 #else
3358 #error unsupported target CPU
3359 #endif
3360
3361 #if defined(TARGET_ARM) || defined(TARGET_M68K)
3362 ts->stack_base = info->start_stack;
3363 ts->heap_base = info->brk;
3364 /* This will be filled in on the first SYS_HEAPINFO call. */
3365 ts->heap_limit = 0;
3366 #endif
3367
3368 if (gdbstub_port) {
3369 gdbserver_start (gdbstub_port);
3370 gdb_handlesig(env, 0);
3371 }
3372 cpu_loop(env);
3373 /* never exits */
3374 return 0;
3375 }
various patches