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block/nfs: bump libnfs requirement to 1.9.3
[qemu/ar7.git] / linux-user / main.c
blobaf924dcc9df0f5cc94272cd4fdc7d0280db7d7dd
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 "qemu/cache-utils.h"
32 #include "cpu.h"
33 #include "tcg.h"
34 #include "qemu/timer.h"
35 #include "qemu/envlist.h"
36 #include "elf.h"
37
38 char *exec_path;
39
40 int singlestep;
41 const char *filename;
42 const char *argv0;
43 int gdbstub_port;
44 envlist_t *envlist;
45 static const char *cpu_model;
46 unsigned long mmap_min_addr;
47 #if defined(CONFIG_USE_GUEST_BASE)
48 unsigned long guest_base;
49 int have_guest_base;
50 #if (TARGET_LONG_BITS == 32) && (HOST_LONG_BITS == 64)
51 /*
52 * When running 32-on-64 we should make sure we can fit all of the possible
53 * guest address space into a contiguous chunk of virtual host memory.
54 *
55 * This way we will never overlap with our own libraries or binaries or stack
56 * or anything else that QEMU maps.
57 */
58 # ifdef TARGET_MIPS
59 /* MIPS only supports 31 bits of virtual address space for user space */
60 unsigned long reserved_va = 0x77000000;
61 # else
62 unsigned long reserved_va = 0xf7000000;
63 # endif
64 #else
65 unsigned long reserved_va;
66 #endif
67 #endif
68
69 static void usage(void);
70
71 static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
72 const char *qemu_uname_release = CONFIG_UNAME_RELEASE;
73
74 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
75 we allocate a bigger stack. Need a better solution, for example
76 by remapping the process stack directly at the right place */
77 unsigned long guest_stack_size = 8 * 1024 * 1024UL;
78
79 void gemu_log(const char *fmt, ...)
80 {
81 va_list ap;
82
83 va_start(ap, fmt);
84 vfprintf(stderr, fmt, ap);
85 va_end(ap);
86 }
87
88 #if defined(TARGET_I386)
89 int cpu_get_pic_interrupt(CPUX86State *env)
90 {
91 return -1;
92 }
93 #endif
94
95 /***********************************************************/
96 /* Helper routines for implementing atomic operations. */
97
98 /* To implement exclusive operations we force all cpus to syncronise.
99 We don't require a full sync, only that no cpus are executing guest code.
100 The alternative is to map target atomic ops onto host equivalents,
101 which requires quite a lot of per host/target work. */
102 static pthread_mutex_t cpu_list_mutex = PTHREAD_MUTEX_INITIALIZER;
103 static pthread_mutex_t exclusive_lock = PTHREAD_MUTEX_INITIALIZER;
104 static pthread_cond_t exclusive_cond = PTHREAD_COND_INITIALIZER;
105 static pthread_cond_t exclusive_resume = PTHREAD_COND_INITIALIZER;
106 static int pending_cpus;
107
108 /* Make sure everything is in a consistent state for calling fork(). */
109 void fork_start(void)
110 {
111 pthread_mutex_lock(&tcg_ctx.tb_ctx.tb_lock);
112 pthread_mutex_lock(&exclusive_lock);
113 mmap_fork_start();
114 }
115
116 void fork_end(int child)
117 {
118 mmap_fork_end(child);
119 if (child) {
120 CPUState *cpu, *next_cpu;
121 /* Child processes created by fork() only have a single thread.
122 Discard information about the parent threads. */
123 CPU_FOREACH_SAFE(cpu, next_cpu) {
124 if (cpu != thread_cpu) {
125 QTAILQ_REMOVE(&cpus, thread_cpu, node);
126 }
127 }
128 pending_cpus = 0;
129 pthread_mutex_init(&exclusive_lock, NULL);
130 pthread_mutex_init(&cpu_list_mutex, NULL);
131 pthread_cond_init(&exclusive_cond, NULL);
132 pthread_cond_init(&exclusive_resume, NULL);
133 pthread_mutex_init(&tcg_ctx.tb_ctx.tb_lock, NULL);
134 gdbserver_fork((CPUArchState *)thread_cpu->env_ptr);
135 } else {
136 pthread_mutex_unlock(&exclusive_lock);
137 pthread_mutex_unlock(&tcg_ctx.tb_ctx.tb_lock);
138 }
139 }
140
141 /* Wait for pending exclusive operations to complete. The exclusive lock
142 must be held. */
143 static inline void exclusive_idle(void)
144 {
145 while (pending_cpus) {
146 pthread_cond_wait(&exclusive_resume, &exclusive_lock);
147 }
148 }
149
150 /* Start an exclusive operation.
151 Must only be called from outside cpu_arm_exec. */
152 static inline void start_exclusive(void)
153 {
154 CPUState *other_cpu;
155
156 pthread_mutex_lock(&exclusive_lock);
157 exclusive_idle();
158
159 pending_cpus = 1;
160 /* Make all other cpus stop executing. */
161 CPU_FOREACH(other_cpu) {
162 if (other_cpu->running) {
163 pending_cpus++;
164 cpu_exit(other_cpu);
165 }
166 }
167 if (pending_cpus > 1) {
168 pthread_cond_wait(&exclusive_cond, &exclusive_lock);
169 }
170 }
171
172 /* Finish an exclusive operation. */
173 static inline void end_exclusive(void)
174 {
175 pending_cpus = 0;
176 pthread_cond_broadcast(&exclusive_resume);
177 pthread_mutex_unlock(&exclusive_lock);
178 }
179
180 /* Wait for exclusive ops to finish, and begin cpu execution. */
181 static inline void cpu_exec_start(CPUState *cpu)
182 {
183 pthread_mutex_lock(&exclusive_lock);
184 exclusive_idle();
185 cpu->running = true;
186 pthread_mutex_unlock(&exclusive_lock);
187 }
188
189 /* Mark cpu as not executing, and release pending exclusive ops. */
190 static inline void cpu_exec_end(CPUState *cpu)
191 {
192 pthread_mutex_lock(&exclusive_lock);
193 cpu->running = false;
194 if (pending_cpus > 1) {
195 pending_cpus--;
196 if (pending_cpus == 1) {
197 pthread_cond_signal(&exclusive_cond);
198 }
199 }
200 exclusive_idle();
201 pthread_mutex_unlock(&exclusive_lock);
202 }
203
204 void cpu_list_lock(void)
205 {
206 pthread_mutex_lock(&cpu_list_mutex);
207 }
208
209 void cpu_list_unlock(void)
210 {
211 pthread_mutex_unlock(&cpu_list_mutex);
212 }
213
214
215 #ifdef TARGET_I386
216 /***********************************************************/
217 /* CPUX86 core interface */
218
219 void cpu_smm_update(CPUX86State *env)
220 {
221 }
222
223 uint64_t cpu_get_tsc(CPUX86State *env)
224 {
225 return cpu_get_real_ticks();
226 }
227
228 static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
229 int flags)
230 {
231 unsigned int e1, e2;
232 uint32_t *p;
233 e1 = (addr << 16) | (limit & 0xffff);
234 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
235 e2 |= flags;
236 p = ptr;
237 p[0] = tswap32(e1);
238 p[1] = tswap32(e2);
239 }
240
241 static uint64_t *idt_table;
242 #ifdef TARGET_X86_64
243 static void set_gate64(void *ptr, unsigned int type, unsigned int dpl,
244 uint64_t addr, unsigned int sel)
245 {
246 uint32_t *p, e1, e2;
247 e1 = (addr & 0xffff) | (sel << 16);
248 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
249 p = ptr;
250 p[0] = tswap32(e1);
251 p[1] = tswap32(e2);
252 p[2] = tswap32(addr >> 32);
253 p[3] = 0;
254 }
255 /* only dpl matters as we do only user space emulation */
256 static void set_idt(int n, unsigned int dpl)
257 {
258 set_gate64(idt_table + n * 2, 0, dpl, 0, 0);
259 }
260 #else
261 static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
262 uint32_t addr, unsigned int sel)
263 {
264 uint32_t *p, e1, e2;
265 e1 = (addr & 0xffff) | (sel << 16);
266 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
267 p = ptr;
268 p[0] = tswap32(e1);
269 p[1] = tswap32(e2);
270 }
271
272 /* only dpl matters as we do only user space emulation */
273 static void set_idt(int n, unsigned int dpl)
274 {
275 set_gate(idt_table + n, 0, dpl, 0, 0);
276 }
277 #endif
278
279 void cpu_loop(CPUX86State *env)
280 {
281 CPUState *cs = CPU(x86_env_get_cpu(env));
282 int trapnr;
283 abi_ulong pc;
284 target_siginfo_t info;
285
286 for(;;) {
287 trapnr = cpu_x86_exec(env);
288 switch(trapnr) {
289 case 0x80:
290 /* linux syscall from int $0x80 */
291 env->regs[R_EAX] = do_syscall(env,
292 env->regs[R_EAX],
293 env->regs[R_EBX],
294 env->regs[R_ECX],
295 env->regs[R_EDX],
296 env->regs[R_ESI],
297 env->regs[R_EDI],
298 env->regs[R_EBP],
299 0, 0);
300 break;
301 #ifndef TARGET_ABI32
302 case EXCP_SYSCALL:
303 /* linux syscall from syscall instruction */
304 env->regs[R_EAX] = do_syscall(env,
305 env->regs[R_EAX],
306 env->regs[R_EDI],
307 env->regs[R_ESI],
308 env->regs[R_EDX],
309 env->regs[10],
310 env->regs[8],
311 env->regs[9],
312 0, 0);
313 env->eip = env->exception_next_eip;
314 break;
315 #endif
316 case EXCP0B_NOSEG:
317 case EXCP0C_STACK:
318 info.si_signo = SIGBUS;
319 info.si_errno = 0;
320 info.si_code = TARGET_SI_KERNEL;
321 info._sifields._sigfault._addr = 0;
322 queue_signal(env, info.si_signo, &info);
323 break;
324 case EXCP0D_GPF:
325 /* XXX: potential problem if ABI32 */
326 #ifndef TARGET_X86_64
327 if (env->eflags & VM_MASK) {
328 handle_vm86_fault(env);
329 } else
330 #endif
331 {
332 info.si_signo = SIGSEGV;
333 info.si_errno = 0;
334 info.si_code = TARGET_SI_KERNEL;
335 info._sifields._sigfault._addr = 0;
336 queue_signal(env, info.si_signo, &info);
337 }
338 break;
339 case EXCP0E_PAGE:
340 info.si_signo = SIGSEGV;
341 info.si_errno = 0;
342 if (!(env->error_code & 1))
343 info.si_code = TARGET_SEGV_MAPERR;
344 else
345 info.si_code = TARGET_SEGV_ACCERR;
346 info._sifields._sigfault._addr = env->cr[2];
347 queue_signal(env, info.si_signo, &info);
348 break;
349 case EXCP00_DIVZ:
350 #ifndef TARGET_X86_64
351 if (env->eflags & VM_MASK) {
352 handle_vm86_trap(env, trapnr);
353 } else
354 #endif
355 {
356 /* division by zero */
357 info.si_signo = SIGFPE;
358 info.si_errno = 0;
359 info.si_code = TARGET_FPE_INTDIV;
360 info._sifields._sigfault._addr = env->eip;
361 queue_signal(env, info.si_signo, &info);
362 }
363 break;
364 case EXCP01_DB:
365 case EXCP03_INT3:
366 #ifndef TARGET_X86_64
367 if (env->eflags & VM_MASK) {
368 handle_vm86_trap(env, trapnr);
369 } else
370 #endif
371 {
372 info.si_signo = SIGTRAP;
373 info.si_errno = 0;
374 if (trapnr == EXCP01_DB) {
375 info.si_code = TARGET_TRAP_BRKPT;
376 info._sifields._sigfault._addr = env->eip;
377 } else {
378 info.si_code = TARGET_SI_KERNEL;
379 info._sifields._sigfault._addr = 0;
380 }
381 queue_signal(env, info.si_signo, &info);
382 }
383 break;
384 case EXCP04_INTO:
385 case EXCP05_BOUND:
386 #ifndef TARGET_X86_64
387 if (env->eflags & VM_MASK) {
388 handle_vm86_trap(env, trapnr);
389 } else
390 #endif
391 {
392 info.si_signo = SIGSEGV;
393 info.si_errno = 0;
394 info.si_code = TARGET_SI_KERNEL;
395 info._sifields._sigfault._addr = 0;
396 queue_signal(env, info.si_signo, &info);
397 }
398 break;
399 case EXCP06_ILLOP:
400 info.si_signo = SIGILL;
401 info.si_errno = 0;
402 info.si_code = TARGET_ILL_ILLOPN;
403 info._sifields._sigfault._addr = env->eip;
404 queue_signal(env, info.si_signo, &info);
405 break;
406 case EXCP_INTERRUPT:
407 /* just indicate that signals should be handled asap */
408 break;
409 case EXCP_DEBUG:
410 {
411 int sig;
412
413 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
414 if (sig)
415 {
416 info.si_signo = sig;
417 info.si_errno = 0;
418 info.si_code = TARGET_TRAP_BRKPT;
419 queue_signal(env, info.si_signo, &info);
420 }
421 }
422 break;
423 default:
424 pc = env->segs[R_CS].base + env->eip;
425 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
426 (long)pc, trapnr);
427 abort();
428 }
429 process_pending_signals(env);
430 }
431 }
432 #endif
433
434 #ifdef TARGET_ARM
435
436 #define get_user_code_u32(x, gaddr, doswap) \
437 ({ abi_long __r = get_user_u32((x), (gaddr)); \
438 if (!__r && (doswap)) { \
439 (x) = bswap32(x); \
440 } \
441 __r; \
442 })
443
444 #define get_user_code_u16(x, gaddr, doswap) \
445 ({ abi_long __r = get_user_u16((x), (gaddr)); \
446 if (!__r && (doswap)) { \
447 (x) = bswap16(x); \
448 } \
449 __r; \
450 })
451
452 #ifdef TARGET_ABI32
453 /* Commpage handling -- there is no commpage for AArch64 */
454
455 /*
456 * See the Linux kernel's Documentation/arm/kernel_user_helpers.txt
457 * Input:
458 * r0 = pointer to oldval
459 * r1 = pointer to newval
460 * r2 = pointer to target value
461 *
462 * Output:
463 * r0 = 0 if *ptr was changed, non-0 if no exchange happened
464 * C set if *ptr was changed, clear if no exchange happened
465 *
466 * Note segv's in kernel helpers are a bit tricky, we can set the
467 * data address sensibly but the PC address is just the entry point.
468 */
469 static void arm_kernel_cmpxchg64_helper(CPUARMState *env)
470 {
471 uint64_t oldval, newval, val;
472 uint32_t addr, cpsr;
473 target_siginfo_t info;
474
475 /* Based on the 32 bit code in do_kernel_trap */
476
477 /* XXX: This only works between threads, not between processes.
478 It's probably possible to implement this with native host
479 operations. However things like ldrex/strex are much harder so
480 there's not much point trying. */
481 start_exclusive();
482 cpsr = cpsr_read(env);
483 addr = env->regs[2];
484
485 if (get_user_u64(oldval, env->regs[0])) {
486 env->cp15.c6_data = env->regs[0];
487 goto segv;
488 };
489
490 if (get_user_u64(newval, env->regs[1])) {
491 env->cp15.c6_data = env->regs[1];
492 goto segv;
493 };
494
495 if (get_user_u64(val, addr)) {
496 env->cp15.c6_data = addr;
497 goto segv;
498 }
499
500 if (val == oldval) {
501 val = newval;
502
503 if (put_user_u64(val, addr)) {
504 env->cp15.c6_data = addr;
505 goto segv;
506 };
507
508 env->regs[0] = 0;
509 cpsr |= CPSR_C;
510 } else {
511 env->regs[0] = -1;
512 cpsr &= ~CPSR_C;
513 }
514 cpsr_write(env, cpsr, CPSR_C);
515 end_exclusive();
516 return;
517
518 segv:
519 end_exclusive();
520 /* We get the PC of the entry address - which is as good as anything,
521 on a real kernel what you get depends on which mode it uses. */
522 info.si_signo = SIGSEGV;
523 info.si_errno = 0;
524 /* XXX: check env->error_code */
525 info.si_code = TARGET_SEGV_MAPERR;
526 info._sifields._sigfault._addr = env->cp15.c6_data;
527 queue_signal(env, info.si_signo, &info);
528
529 end_exclusive();
530 }
531
532 /* Handle a jump to the kernel code page. */
533 static int
534 do_kernel_trap(CPUARMState *env)
535 {
536 uint32_t addr;
537 uint32_t cpsr;
538 uint32_t val;
539
540 switch (env->regs[15]) {
541 case 0xffff0fa0: /* __kernel_memory_barrier */
542 /* ??? No-op. Will need to do better for SMP. */
543 break;
544 case 0xffff0fc0: /* __kernel_cmpxchg */
545 /* XXX: This only works between threads, not between processes.
546 It's probably possible to implement this with native host
547 operations. However things like ldrex/strex are much harder so
548 there's not much point trying. */
549 start_exclusive();
550 cpsr = cpsr_read(env);
551 addr = env->regs[2];
552 /* FIXME: This should SEGV if the access fails. */
553 if (get_user_u32(val, addr))
554 val = ~env->regs[0];
555 if (val == env->regs[0]) {
556 val = env->regs[1];
557 /* FIXME: Check for segfaults. */
558 put_user_u32(val, addr);
559 env->regs[0] = 0;
560 cpsr |= CPSR_C;
561 } else {
562 env->regs[0] = -1;
563 cpsr &= ~CPSR_C;
564 }
565 cpsr_write(env, cpsr, CPSR_C);
566 end_exclusive();
567 break;
568 case 0xffff0fe0: /* __kernel_get_tls */
569 env->regs[0] = env->cp15.tpidrro_el0;
570 break;
571 case 0xffff0f60: /* __kernel_cmpxchg64 */
572 arm_kernel_cmpxchg64_helper(env);
573 break;
574
575 default:
576 return 1;
577 }
578 /* Jump back to the caller. */
579 addr = env->regs[14];
580 if (addr & 1) {
581 env->thumb = 1;
582 addr &= ~1;
583 }
584 env->regs[15] = addr;
585
586 return 0;
587 }
588
589 /* Store exclusive handling for AArch32 */
590 static int do_strex(CPUARMState *env)
591 {
592 uint64_t val;
593 int size;
594 int rc = 1;
595 int segv = 0;
596 uint32_t addr;
597 start_exclusive();
598 if (env->exclusive_addr != env->exclusive_test) {
599 goto fail;
600 }
601 /* We know we're always AArch32 so the address is in uint32_t range
602 * unless it was the -1 exclusive-monitor-lost value (which won't
603 * match exclusive_test above).
604 */
605 assert(extract64(env->exclusive_addr, 32, 32) == 0);
606 addr = env->exclusive_addr;
607 size = env->exclusive_info & 0xf;
608 switch (size) {
609 case 0:
610 segv = get_user_u8(val, addr);
611 break;
612 case 1:
613 segv = get_user_u16(val, addr);
614 break;
615 case 2:
616 case 3:
617 segv = get_user_u32(val, addr);
618 break;
619 default:
620 abort();
621 }
622 if (segv) {
623 env->cp15.c6_data = addr;
624 goto done;
625 }
626 if (size == 3) {
627 uint32_t valhi;
628 segv = get_user_u32(valhi, addr + 4);
629 if (segv) {
630 env->cp15.c6_data = addr + 4;
631 goto done;
632 }
633 val = deposit64(val, 32, 32, valhi);
634 }
635 if (val != env->exclusive_val) {
636 goto fail;
637 }
638
639 val = env->regs[(env->exclusive_info >> 8) & 0xf];
640 switch (size) {
641 case 0:
642 segv = put_user_u8(val, addr);
643 break;
644 case 1:
645 segv = put_user_u16(val, addr);
646 break;
647 case 2:
648 case 3:
649 segv = put_user_u32(val, addr);
650 break;
651 }
652 if (segv) {
653 env->cp15.c6_data = addr;
654 goto done;
655 }
656 if (size == 3) {
657 val = env->regs[(env->exclusive_info >> 12) & 0xf];
658 segv = put_user_u32(val, addr + 4);
659 if (segv) {
660 env->cp15.c6_data = addr + 4;
661 goto done;
662 }
663 }
664 rc = 0;
665 fail:
666 env->regs[15] += 4;
667 env->regs[(env->exclusive_info >> 4) & 0xf] = rc;
668 done:
669 end_exclusive();
670 return segv;
671 }
672
673 void cpu_loop(CPUARMState *env)
674 {
675 CPUState *cs = CPU(arm_env_get_cpu(env));
676 int trapnr;
677 unsigned int n, insn;
678 target_siginfo_t info;
679 uint32_t addr;
680
681 for(;;) {
682 cpu_exec_start(cs);
683 trapnr = cpu_arm_exec(env);
684 cpu_exec_end(cs);
685 switch(trapnr) {
686 case EXCP_UDEF:
687 {
688 TaskState *ts = cs->opaque;
689 uint32_t opcode;
690 int rc;
691
692 /* we handle the FPU emulation here, as Linux */
693 /* we get the opcode */
694 /* FIXME - what to do if get_user() fails? */
695 get_user_code_u32(opcode, env->regs[15], env->bswap_code);
696
697 rc = EmulateAll(opcode, &ts->fpa, env);
698 if (rc == 0) { /* illegal instruction */
699 info.si_signo = SIGILL;
700 info.si_errno = 0;
701 info.si_code = TARGET_ILL_ILLOPN;
702 info._sifields._sigfault._addr = env->regs[15];
703 queue_signal(env, info.si_signo, &info);
704 } else if (rc < 0) { /* FP exception */
705 int arm_fpe=0;
706
707 /* translate softfloat flags to FPSR flags */
708 if (-rc & float_flag_invalid)
709 arm_fpe |= BIT_IOC;
710 if (-rc & float_flag_divbyzero)
711 arm_fpe |= BIT_DZC;
712 if (-rc & float_flag_overflow)
713 arm_fpe |= BIT_OFC;
714 if (-rc & float_flag_underflow)
715 arm_fpe |= BIT_UFC;
716 if (-rc & float_flag_inexact)
717 arm_fpe |= BIT_IXC;
718
719 FPSR fpsr = ts->fpa.fpsr;
720 //printf("fpsr 0x%x, arm_fpe 0x%x\n",fpsr,arm_fpe);
721
722 if (fpsr & (arm_fpe << 16)) { /* exception enabled? */
723 info.si_signo = SIGFPE;
724 info.si_errno = 0;
725
726 /* ordered by priority, least first */
727 if (arm_fpe & BIT_IXC) info.si_code = TARGET_FPE_FLTRES;
728 if (arm_fpe & BIT_UFC) info.si_code = TARGET_FPE_FLTUND;
729 if (arm_fpe & BIT_OFC) info.si_code = TARGET_FPE_FLTOVF;
730 if (arm_fpe & BIT_DZC) info.si_code = TARGET_FPE_FLTDIV;
731 if (arm_fpe & BIT_IOC) info.si_code = TARGET_FPE_FLTINV;
732
733 info._sifields._sigfault._addr = env->regs[15];
734 queue_signal(env, info.si_signo, &info);
735 } else {
736 env->regs[15] += 4;
737 }
738
739 /* accumulate unenabled exceptions */
740 if ((!(fpsr & BIT_IXE)) && (arm_fpe & BIT_IXC))
741 fpsr |= BIT_IXC;
742 if ((!(fpsr & BIT_UFE)) && (arm_fpe & BIT_UFC))
743 fpsr |= BIT_UFC;
744 if ((!(fpsr & BIT_OFE)) && (arm_fpe & BIT_OFC))
745 fpsr |= BIT_OFC;
746 if ((!(fpsr & BIT_DZE)) && (arm_fpe & BIT_DZC))
747 fpsr |= BIT_DZC;
748 if ((!(fpsr & BIT_IOE)) && (arm_fpe & BIT_IOC))
749 fpsr |= BIT_IOC;
750 ts->fpa.fpsr=fpsr;
751 } else { /* everything OK */
752 /* increment PC */
753 env->regs[15] += 4;
754 }
755 }
756 break;
757 case EXCP_SWI:
758 case EXCP_BKPT:
759 {
760 env->eabi = 1;
761 /* system call */
762 if (trapnr == EXCP_BKPT) {
763 if (env->thumb) {
764 /* FIXME - what to do if get_user() fails? */
765 get_user_code_u16(insn, env->regs[15], env->bswap_code);
766 n = insn & 0xff;
767 env->regs[15] += 2;
768 } else {
769 /* FIXME - what to do if get_user() fails? */
770 get_user_code_u32(insn, env->regs[15], env->bswap_code);
771 n = (insn & 0xf) | ((insn >> 4) & 0xff0);
772 env->regs[15] += 4;
773 }
774 } else {
775 if (env->thumb) {
776 /* FIXME - what to do if get_user() fails? */
777 get_user_code_u16(insn, env->regs[15] - 2,
778 env->bswap_code);
779 n = insn & 0xff;
780 } else {
781 /* FIXME - what to do if get_user() fails? */
782 get_user_code_u32(insn, env->regs[15] - 4,
783 env->bswap_code);
784 n = insn & 0xffffff;
785 }
786 }
787
788 if (n == ARM_NR_cacheflush) {
789 /* nop */
790 } else if (n == ARM_NR_semihosting
791 || n == ARM_NR_thumb_semihosting) {
792 env->regs[0] = do_arm_semihosting (env);
793 } else if (n == 0 || n >= ARM_SYSCALL_BASE || env->thumb) {
794 /* linux syscall */
795 if (env->thumb || n == 0) {
796 n = env->regs[7];
797 } else {
798 n -= ARM_SYSCALL_BASE;
799 env->eabi = 0;
800 }
801 if ( n > ARM_NR_BASE) {
802 switch (n) {
803 case ARM_NR_cacheflush:
804 /* nop */
805 break;
806 case ARM_NR_set_tls:
807 cpu_set_tls(env, env->regs[0]);
808 env->regs[0] = 0;
809 break;
810 default:
811 gemu_log("qemu: Unsupported ARM syscall: 0x%x\n",
812 n);
813 env->regs[0] = -TARGET_ENOSYS;
814 break;
815 }
816 } else {
817 env->regs[0] = do_syscall(env,
818 n,
819 env->regs[0],
820 env->regs[1],
821 env->regs[2],
822 env->regs[3],
823 env->regs[4],
824 env->regs[5],
825 0, 0);
826 }
827 } else {
828 goto error;
829 }
830 }
831 break;
832 case EXCP_INTERRUPT:
833 /* just indicate that signals should be handled asap */
834 break;
835 case EXCP_PREFETCH_ABORT:
836 addr = env->cp15.c6_insn;
837 goto do_segv;
838 case EXCP_DATA_ABORT:
839 addr = env->cp15.c6_data;
840 do_segv:
841 {
842 info.si_signo = SIGSEGV;
843 info.si_errno = 0;
844 /* XXX: check env->error_code */
845 info.si_code = TARGET_SEGV_MAPERR;
846 info._sifields._sigfault._addr = addr;
847 queue_signal(env, info.si_signo, &info);
848 }
849 break;
850 case EXCP_DEBUG:
851 {
852 int sig;
853
854 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
855 if (sig)
856 {
857 info.si_signo = sig;
858 info.si_errno = 0;
859 info.si_code = TARGET_TRAP_BRKPT;
860 queue_signal(env, info.si_signo, &info);
861 }
862 }
863 break;
864 case EXCP_KERNEL_TRAP:
865 if (do_kernel_trap(env))
866 goto error;
867 break;
868 case EXCP_STREX:
869 if (do_strex(env)) {
870 addr = env->cp15.c6_data;
871 goto do_segv;
872 }
873 break;
874 default:
875 error:
876 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
877 trapnr);
878 cpu_dump_state(cs, stderr, fprintf, 0);
879 abort();
880 }
881 process_pending_signals(env);
882 }
883 }
884
885 #else
886
887 /*
888 * Handle AArch64 store-release exclusive
889 *
890 * rs = gets the status result of store exclusive
891 * rt = is the register that is stored
892 * rt2 = is the second register store (in STP)
893 *
894 */
895 static int do_strex_a64(CPUARMState *env)
896 {
897 uint64_t val;
898 int size;
899 bool is_pair;
900 int rc = 1;
901 int segv = 0;
902 uint64_t addr;
903 int rs, rt, rt2;
904
905 start_exclusive();
906 /* size | is_pair << 2 | (rs << 4) | (rt << 9) | (rt2 << 14)); */
907 size = extract32(env->exclusive_info, 0, 2);
908 is_pair = extract32(env->exclusive_info, 2, 1);
909 rs = extract32(env->exclusive_info, 4, 5);
910 rt = extract32(env->exclusive_info, 9, 5);
911 rt2 = extract32(env->exclusive_info, 14, 5);
912
913 addr = env->exclusive_addr;
914
915 if (addr != env->exclusive_test) {
916 goto finish;
917 }
918
919 switch (size) {
920 case 0:
921 segv = get_user_u8(val, addr);
922 break;
923 case 1:
924 segv = get_user_u16(val, addr);
925 break;
926 case 2:
927 segv = get_user_u32(val, addr);
928 break;
929 case 3:
930 segv = get_user_u64(val, addr);
931 break;
932 default:
933 abort();
934 }
935 if (segv) {
936 env->cp15.c6_data = addr;
937 goto error;
938 }
939 if (val != env->exclusive_val) {
940 goto finish;
941 }
942 if (is_pair) {
943 if (size == 2) {
944 segv = get_user_u32(val, addr + 4);
945 } else {
946 segv = get_user_u64(val, addr + 8);
947 }
948 if (segv) {
949 env->cp15.c6_data = addr + (size == 2 ? 4 : 8);
950 goto error;
951 }
952 if (val != env->exclusive_high) {
953 goto finish;
954 }
955 }
956 /* handle the zero register */
957 val = rt == 31 ? 0 : env->xregs[rt];
958 switch (size) {
959 case 0:
960 segv = put_user_u8(val, addr);
961 break;
962 case 1:
963 segv = put_user_u16(val, addr);
964 break;
965 case 2:
966 segv = put_user_u32(val, addr);
967 break;
968 case 3:
969 segv = put_user_u64(val, addr);
970 break;
971 }
972 if (segv) {
973 goto error;
974 }
975 if (is_pair) {
976 /* handle the zero register */
977 val = rt2 == 31 ? 0 : env->xregs[rt2];
978 if (size == 2) {
979 segv = put_user_u32(val, addr + 4);
980 } else {
981 segv = put_user_u64(val, addr + 8);
982 }
983 if (segv) {
984 env->cp15.c6_data = addr + (size == 2 ? 4 : 8);
985 goto error;
986 }
987 }
988 rc = 0;
989 finish:
990 env->pc += 4;
991 /* rs == 31 encodes a write to the ZR, thus throwing away
992 * the status return. This is rather silly but valid.
993 */
994 if (rs < 31) {
995 env->xregs[rs] = rc;
996 }
997 error:
998 /* instruction faulted, PC does not advance */
999 /* either way a strex releases any exclusive lock we have */
1000 env->exclusive_addr = -1;
1001 end_exclusive();
1002 return segv;
1003 }
1004
1005 /* AArch64 main loop */
1006 void cpu_loop(CPUARMState *env)
1007 {
1008 CPUState *cs = CPU(arm_env_get_cpu(env));
1009 int trapnr, sig;
1010 target_siginfo_t info;
1011 uint32_t addr;
1012
1013 for (;;) {
1014 cpu_exec_start(cs);
1015 trapnr = cpu_arm_exec(env);
1016 cpu_exec_end(cs);
1017
1018 switch (trapnr) {
1019 case EXCP_SWI:
1020 env->xregs[0] = do_syscall(env,
1021 env->xregs[8],
1022 env->xregs[0],
1023 env->xregs[1],
1024 env->xregs[2],
1025 env->xregs[3],
1026 env->xregs[4],
1027 env->xregs[5],
1028 0, 0);
1029 break;
1030 case EXCP_INTERRUPT:
1031 /* just indicate that signals should be handled asap */
1032 break;
1033 case EXCP_UDEF:
1034 info.si_signo = SIGILL;
1035 info.si_errno = 0;
1036 info.si_code = TARGET_ILL_ILLOPN;
1037 info._sifields._sigfault._addr = env->pc;
1038 queue_signal(env, info.si_signo, &info);
1039 break;
1040 case EXCP_PREFETCH_ABORT:
1041 addr = env->cp15.c6_insn;
1042 goto do_segv;
1043 case EXCP_DATA_ABORT:
1044 addr = env->cp15.c6_data;
1045 do_segv:
1046 info.si_signo = SIGSEGV;
1047 info.si_errno = 0;
1048 /* XXX: check env->error_code */
1049 info.si_code = TARGET_SEGV_MAPERR;
1050 info._sifields._sigfault._addr = addr;
1051 queue_signal(env, info.si_signo, &info);
1052 break;
1053 case EXCP_DEBUG:
1054 case EXCP_BKPT:
1055 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
1056 if (sig) {
1057 info.si_signo = sig;
1058 info.si_errno = 0;
1059 info.si_code = TARGET_TRAP_BRKPT;
1060 queue_signal(env, info.si_signo, &info);
1061 }
1062 break;
1063 case EXCP_STREX:
1064 if (do_strex_a64(env)) {
1065 addr = env->cp15.c6_data;
1066 goto do_segv;
1067 }
1068 break;
1069 default:
1070 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
1071 trapnr);
1072 cpu_dump_state(cs, stderr, fprintf, 0);
1073 abort();
1074 }
1075 process_pending_signals(env);
1076 /* Exception return on AArch64 always clears the exclusive monitor,
1077 * so any return to running guest code implies this.
1078 * A strex (successful or otherwise) also clears the monitor, so
1079 * we don't need to specialcase EXCP_STREX.
1080 */
1081 env->exclusive_addr = -1;
1082 }
1083 }
1084 #endif /* ndef TARGET_ABI32 */
1085
1086 #endif
1087
1088 #ifdef TARGET_UNICORE32
1089
1090 void cpu_loop(CPUUniCore32State *env)
1091 {
1092 CPUState *cs = CPU(uc32_env_get_cpu(env));
1093 int trapnr;
1094 unsigned int n, insn;
1095 target_siginfo_t info;
1096
1097 for (;;) {
1098 cpu_exec_start(cs);
1099 trapnr = uc32_cpu_exec(env);
1100 cpu_exec_end(cs);
1101 switch (trapnr) {
1102 case UC32_EXCP_PRIV:
1103 {
1104 /* system call */
1105 get_user_u32(insn, env->regs[31] - 4);
1106 n = insn & 0xffffff;
1107
1108 if (n >= UC32_SYSCALL_BASE) {
1109 /* linux syscall */
1110 n -= UC32_SYSCALL_BASE;
1111 if (n == UC32_SYSCALL_NR_set_tls) {
1112 cpu_set_tls(env, env->regs[0]);
1113 env->regs[0] = 0;
1114 } else {
1115 env->regs[0] = do_syscall(env,
1116 n,
1117 env->regs[0],
1118 env->regs[1],
1119 env->regs[2],
1120 env->regs[3],
1121 env->regs[4],
1122 env->regs[5],
1123 0, 0);
1124 }
1125 } else {
1126 goto error;
1127 }
1128 }
1129 break;
1130 case UC32_EXCP_DTRAP:
1131 case UC32_EXCP_ITRAP:
1132 info.si_signo = SIGSEGV;
1133 info.si_errno = 0;
1134 /* XXX: check env->error_code */
1135 info.si_code = TARGET_SEGV_MAPERR;
1136 info._sifields._sigfault._addr = env->cp0.c4_faultaddr;
1137 queue_signal(env, info.si_signo, &info);
1138 break;
1139 case EXCP_INTERRUPT:
1140 /* just indicate that signals should be handled asap */
1141 break;
1142 case EXCP_DEBUG:
1143 {
1144 int sig;
1145
1146 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
1147 if (sig) {
1148 info.si_signo = sig;
1149 info.si_errno = 0;
1150 info.si_code = TARGET_TRAP_BRKPT;
1151 queue_signal(env, info.si_signo, &info);
1152 }
1153 }
1154 break;
1155 default:
1156 goto error;
1157 }
1158 process_pending_signals(env);
1159 }
1160
1161 error:
1162 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr);
1163 cpu_dump_state(cs, stderr, fprintf, 0);
1164 abort();
1165 }
1166 #endif
1167
1168 #ifdef TARGET_SPARC
1169 #define SPARC64_STACK_BIAS 2047
1170
1171 //#define DEBUG_WIN
1172
1173 /* WARNING: dealing with register windows _is_ complicated. More info
1174 can be found at http://www.sics.se/~psm/sparcstack.html */
1175 static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
1176 {
1177 index = (index + cwp * 16) % (16 * env->nwindows);
1178 /* wrap handling : if cwp is on the last window, then we use the
1179 registers 'after' the end */
1180 if (index < 8 && env->cwp == env->nwindows - 1)
1181 index += 16 * env->nwindows;
1182 return index;
1183 }
1184
1185 /* save the register window 'cwp1' */
1186 static inline void save_window_offset(CPUSPARCState *env, int cwp1)
1187 {
1188 unsigned int i;
1189 abi_ulong sp_ptr;
1190
1191 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
1192 #ifdef TARGET_SPARC64
1193 if (sp_ptr & 3)
1194 sp_ptr += SPARC64_STACK_BIAS;
1195 #endif
1196 #if defined(DEBUG_WIN)
1197 printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n",
1198 sp_ptr, cwp1);
1199 #endif
1200 for(i = 0; i < 16; i++) {
1201 /* FIXME - what to do if put_user() fails? */
1202 put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
1203 sp_ptr += sizeof(abi_ulong);
1204 }
1205 }
1206
1207 static void save_window(CPUSPARCState *env)
1208 {
1209 #ifndef TARGET_SPARC64
1210 unsigned int new_wim;
1211 new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) &
1212 ((1LL << env->nwindows) - 1);
1213 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
1214 env->wim = new_wim;
1215 #else
1216 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
1217 env->cansave++;
1218 env->canrestore--;
1219 #endif
1220 }
1221
1222 static void restore_window(CPUSPARCState *env)
1223 {
1224 #ifndef TARGET_SPARC64
1225 unsigned int new_wim;
1226 #endif
1227 unsigned int i, cwp1;
1228 abi_ulong sp_ptr;
1229
1230 #ifndef TARGET_SPARC64
1231 new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) &
1232 ((1LL << env->nwindows) - 1);
1233 #endif
1234
1235 /* restore the invalid window */
1236 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
1237 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
1238 #ifdef TARGET_SPARC64
1239 if (sp_ptr & 3)
1240 sp_ptr += SPARC64_STACK_BIAS;
1241 #endif
1242 #if defined(DEBUG_WIN)
1243 printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n",
1244 sp_ptr, cwp1);
1245 #endif
1246 for(i = 0; i < 16; i++) {
1247 /* FIXME - what to do if get_user() fails? */
1248 get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
1249 sp_ptr += sizeof(abi_ulong);
1250 }
1251 #ifdef TARGET_SPARC64
1252 env->canrestore++;
1253 if (env->cleanwin < env->nwindows - 1)
1254 env->cleanwin++;
1255 env->cansave--;
1256 #else
1257 env->wim = new_wim;
1258 #endif
1259 }
1260
1261 static void flush_windows(CPUSPARCState *env)
1262 {
1263 int offset, cwp1;
1264
1265 offset = 1;
1266 for(;;) {
1267 /* if restore would invoke restore_window(), then we can stop */
1268 cwp1 = cpu_cwp_inc(env, env->cwp + offset);
1269 #ifndef TARGET_SPARC64
1270 if (env->wim & (1 << cwp1))
1271 break;
1272 #else
1273 if (env->canrestore == 0)
1274 break;
1275 env->cansave++;
1276 env->canrestore--;
1277 #endif
1278 save_window_offset(env, cwp1);
1279 offset++;
1280 }
1281 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
1282 #ifndef TARGET_SPARC64
1283 /* set wim so that restore will reload the registers */
1284 env->wim = 1 << cwp1;
1285 #endif
1286 #if defined(DEBUG_WIN)
1287 printf("flush_windows: nb=%d\n", offset - 1);
1288 #endif
1289 }
1290
1291 void cpu_loop (CPUSPARCState *env)
1292 {
1293 CPUState *cs = CPU(sparc_env_get_cpu(env));
1294 int trapnr;
1295 abi_long ret;
1296 target_siginfo_t info;
1297
1298 while (1) {
1299 trapnr = cpu_sparc_exec (env);
1300
1301 /* Compute PSR before exposing state. */
1302 if (env->cc_op != CC_OP_FLAGS) {
1303 cpu_get_psr(env);
1304 }
1305
1306 switch (trapnr) {
1307 #ifndef TARGET_SPARC64
1308 case 0x88:
1309 case 0x90:
1310 #else
1311 case 0x110:
1312 case 0x16d:
1313 #endif
1314 ret = do_syscall (env, env->gregs[1],
1315 env->regwptr[0], env->regwptr[1],
1316 env->regwptr[2], env->regwptr[3],
1317 env->regwptr[4], env->regwptr[5],
1318 0, 0);
1319 if ((abi_ulong)ret >= (abi_ulong)(-515)) {
1320 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
1321 env->xcc |= PSR_CARRY;
1322 #else
1323 env->psr |= PSR_CARRY;
1324 #endif
1325 ret = -ret;
1326 } else {
1327 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
1328 env->xcc &= ~PSR_CARRY;
1329 #else
1330 env->psr &= ~PSR_CARRY;
1331 #endif
1332 }
1333 env->regwptr[0] = ret;
1334 /* next instruction */
1335 env->pc = env->npc;
1336 env->npc = env->npc + 4;
1337 break;
1338 case 0x83: /* flush windows */
1339 #ifdef TARGET_ABI32
1340 case 0x103:
1341 #endif
1342 flush_windows(env);
1343 /* next instruction */
1344 env->pc = env->npc;
1345 env->npc = env->npc + 4;
1346 break;
1347 #ifndef TARGET_SPARC64
1348 case TT_WIN_OVF: /* window overflow */
1349 save_window(env);
1350 break;
1351 case TT_WIN_UNF: /* window underflow */
1352 restore_window(env);
1353 break;
1354 case TT_TFAULT:
1355 case TT_DFAULT:
1356 {
1357 info.si_signo = TARGET_SIGSEGV;
1358 info.si_errno = 0;
1359 /* XXX: check env->error_code */
1360 info.si_code = TARGET_SEGV_MAPERR;
1361 info._sifields._sigfault._addr = env->mmuregs[4];
1362 queue_signal(env, info.si_signo, &info);
1363 }
1364 break;
1365 #else
1366 case TT_SPILL: /* window overflow */
1367 save_window(env);
1368 break;
1369 case TT_FILL: /* window underflow */
1370 restore_window(env);
1371 break;
1372 case TT_TFAULT:
1373 case TT_DFAULT:
1374 {
1375 info.si_signo = TARGET_SIGSEGV;
1376 info.si_errno = 0;
1377 /* XXX: check env->error_code */
1378 info.si_code = TARGET_SEGV_MAPERR;
1379 if (trapnr == TT_DFAULT)
1380 info._sifields._sigfault._addr = env->dmmuregs[4];
1381 else
1382 info._sifields._sigfault._addr = cpu_tsptr(env)->tpc;
1383 queue_signal(env, info.si_signo, &info);
1384 }
1385 break;
1386 #ifndef TARGET_ABI32
1387 case 0x16e:
1388 flush_windows(env);
1389 sparc64_get_context(env);
1390 break;
1391 case 0x16f:
1392 flush_windows(env);
1393 sparc64_set_context(env);
1394 break;
1395 #endif
1396 #endif
1397 case EXCP_INTERRUPT:
1398 /* just indicate that signals should be handled asap */
1399 break;
1400 case TT_ILL_INSN:
1401 {
1402 info.si_signo = TARGET_SIGILL;
1403 info.si_errno = 0;
1404 info.si_code = TARGET_ILL_ILLOPC;
1405 info._sifields._sigfault._addr = env->pc;
1406 queue_signal(env, info.si_signo, &info);
1407 }
1408 break;
1409 case EXCP_DEBUG:
1410 {
1411 int sig;
1412
1413 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
1414 if (sig)
1415 {
1416 info.si_signo = sig;
1417 info.si_errno = 0;
1418 info.si_code = TARGET_TRAP_BRKPT;
1419 queue_signal(env, info.si_signo, &info);
1420 }
1421 }
1422 break;
1423 default:
1424 printf ("Unhandled trap: 0x%x\n", trapnr);
1425 cpu_dump_state(cs, stderr, fprintf, 0);
1426 exit (1);
1427 }
1428 process_pending_signals (env);
1429 }
1430 }
1431
1432 #endif
1433
1434 #ifdef TARGET_PPC
1435 static inline uint64_t cpu_ppc_get_tb(CPUPPCState *env)
1436 {
1437 /* TO FIX */
1438 return 0;
1439 }
1440
1441 uint64_t cpu_ppc_load_tbl(CPUPPCState *env)
1442 {
1443 return cpu_ppc_get_tb(env);
1444 }
1445
1446 uint32_t cpu_ppc_load_tbu(CPUPPCState *env)
1447 {
1448 return cpu_ppc_get_tb(env) >> 32;
1449 }
1450
1451 uint64_t cpu_ppc_load_atbl(CPUPPCState *env)
1452 {
1453 return cpu_ppc_get_tb(env);
1454 }
1455
1456 uint32_t cpu_ppc_load_atbu(CPUPPCState *env)
1457 {
1458 return cpu_ppc_get_tb(env) >> 32;
1459 }
1460
1461 uint32_t cpu_ppc601_load_rtcu(CPUPPCState *env)
1462 __attribute__ (( alias ("cpu_ppc_load_tbu") ));
1463
1464 uint32_t cpu_ppc601_load_rtcl(CPUPPCState *env)
1465 {
1466 return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
1467 }
1468
1469 /* XXX: to be fixed */
1470 int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, uint32_t *valp)
1471 {
1472 return -1;
1473 }
1474
1475 int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, uint32_t val)
1476 {
1477 return -1;
1478 }
1479
1480 #define EXCP_DUMP(env, fmt, ...) \
1481 do { \
1482 CPUState *cs = ENV_GET_CPU(env); \
1483 fprintf(stderr, fmt , ## __VA_ARGS__); \
1484 cpu_dump_state(cs, stderr, fprintf, 0); \
1485 qemu_log(fmt, ## __VA_ARGS__); \
1486 if (qemu_log_enabled()) { \
1487 log_cpu_state(cs, 0); \
1488 } \
1489 } while (0)
1490
1491 static int do_store_exclusive(CPUPPCState *env)
1492 {
1493 target_ulong addr;
1494 target_ulong page_addr;
1495 target_ulong val, val2 __attribute__((unused));
1496 int flags;
1497 int segv = 0;
1498
1499 addr = env->reserve_ea;
1500 page_addr = addr & TARGET_PAGE_MASK;
1501 start_exclusive();
1502 mmap_lock();
1503 flags = page_get_flags(page_addr);
1504 if ((flags & PAGE_READ) == 0) {
1505 segv = 1;
1506 } else {
1507 int reg = env->reserve_info & 0x1f;
1508 int size = (env->reserve_info >> 5) & 0xf;
1509 int stored = 0;
1510
1511 if (addr == env->reserve_addr) {
1512 switch (size) {
1513 case 1: segv = get_user_u8(val, addr); break;
1514 case 2: segv = get_user_u16(val, addr); break;
1515 case 4: segv = get_user_u32(val, addr); break;
1516 #if defined(TARGET_PPC64)
1517 case 8: segv = get_user_u64(val, addr); break;
1518 case 16: {
1519 segv = get_user_u64(val, addr);
1520 if (!segv) {
1521 segv = get_user_u64(val2, addr + 8);
1522 }
1523 break;
1524 }
1525 #endif
1526 default: abort();
1527 }
1528 if (!segv && val == env->reserve_val) {
1529 val = env->gpr[reg];
1530 switch (size) {
1531 case 1: segv = put_user_u8(val, addr); break;
1532 case 2: segv = put_user_u16(val, addr); break;
1533 case 4: segv = put_user_u32(val, addr); break;
1534 #if defined(TARGET_PPC64)
1535 case 8: segv = put_user_u64(val, addr); break;
1536 case 16: {
1537 if (val2 == env->reserve_val2) {
1538 segv = put_user_u64(val, addr);
1539 if (!segv) {
1540 segv = put_user_u64(val2, addr + 8);
1541 }
1542 }
1543 break;
1544 }
1545 #endif
1546 default: abort();
1547 }
1548 if (!segv) {
1549 stored = 1;
1550 }
1551 }
1552 }
1553 env->crf[0] = (stored << 1) | xer_so;
1554 env->reserve_addr = (target_ulong)-1;
1555 }
1556 if (!segv) {
1557 env->nip += 4;
1558 }
1559 mmap_unlock();
1560 end_exclusive();
1561 return segv;
1562 }
1563
1564 void cpu_loop(CPUPPCState *env)
1565 {
1566 CPUState *cs = CPU(ppc_env_get_cpu(env));
1567 target_siginfo_t info;
1568 int trapnr;
1569 target_ulong ret;
1570
1571 for(;;) {
1572 cpu_exec_start(cs);
1573 trapnr = cpu_ppc_exec(env);
1574 cpu_exec_end(cs);
1575 switch(trapnr) {
1576 case POWERPC_EXCP_NONE:
1577 /* Just go on */
1578 break;
1579 case POWERPC_EXCP_CRITICAL: /* Critical input */
1580 cpu_abort(cs, "Critical interrupt while in user mode. "
1581 "Aborting\n");
1582 break;
1583 case POWERPC_EXCP_MCHECK: /* Machine check exception */
1584 cpu_abort(cs, "Machine check exception while in user mode. "
1585 "Aborting\n");
1586 break;
1587 case POWERPC_EXCP_DSI: /* Data storage exception */
1588 EXCP_DUMP(env, "Invalid data memory access: 0x" TARGET_FMT_lx "\n",
1589 env->spr[SPR_DAR]);
1590 /* XXX: check this. Seems bugged */
1591 switch (env->error_code & 0xFF000000) {
1592 case 0x40000000:
1593 info.si_signo = TARGET_SIGSEGV;
1594 info.si_errno = 0;
1595 info.si_code = TARGET_SEGV_MAPERR;
1596 break;
1597 case 0x04000000:
1598 info.si_signo = TARGET_SIGILL;
1599 info.si_errno = 0;
1600 info.si_code = TARGET_ILL_ILLADR;
1601 break;
1602 case 0x08000000:
1603 info.si_signo = TARGET_SIGSEGV;
1604 info.si_errno = 0;
1605 info.si_code = TARGET_SEGV_ACCERR;
1606 break;
1607 default:
1608 /* Let's send a regular segfault... */
1609 EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
1610 env->error_code);
1611 info.si_signo = TARGET_SIGSEGV;
1612 info.si_errno = 0;
1613 info.si_code = TARGET_SEGV_MAPERR;
1614 break;
1615 }
1616 info._sifields._sigfault._addr = env->nip;
1617 queue_signal(env, info.si_signo, &info);
1618 break;
1619 case POWERPC_EXCP_ISI: /* Instruction storage exception */
1620 EXCP_DUMP(env, "Invalid instruction fetch: 0x\n" TARGET_FMT_lx
1621 "\n", env->spr[SPR_SRR0]);
1622 /* XXX: check this */
1623 switch (env->error_code & 0xFF000000) {
1624 case 0x40000000:
1625 info.si_signo = TARGET_SIGSEGV;
1626 info.si_errno = 0;
1627 info.si_code = TARGET_SEGV_MAPERR;
1628 break;
1629 case 0x10000000:
1630 case 0x08000000:
1631 info.si_signo = TARGET_SIGSEGV;
1632 info.si_errno = 0;
1633 info.si_code = TARGET_SEGV_ACCERR;
1634 break;
1635 default:
1636 /* Let's send a regular segfault... */
1637 EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
1638 env->error_code);
1639 info.si_signo = TARGET_SIGSEGV;
1640 info.si_errno = 0;
1641 info.si_code = TARGET_SEGV_MAPERR;
1642 break;
1643 }
1644 info._sifields._sigfault._addr = env->nip - 4;
1645 queue_signal(env, info.si_signo, &info);
1646 break;
1647 case POWERPC_EXCP_EXTERNAL: /* External input */
1648 cpu_abort(cs, "External interrupt while in user mode. "
1649 "Aborting\n");
1650 break;
1651 case POWERPC_EXCP_ALIGN: /* Alignment exception */
1652 EXCP_DUMP(env, "Unaligned memory access\n");
1653 /* XXX: check this */
1654 info.si_signo = TARGET_SIGBUS;
1655 info.si_errno = 0;
1656 info.si_code = TARGET_BUS_ADRALN;
1657 info._sifields._sigfault._addr = env->nip - 4;
1658 queue_signal(env, info.si_signo, &info);
1659 break;
1660 case POWERPC_EXCP_PROGRAM: /* Program exception */
1661 /* XXX: check this */
1662 switch (env->error_code & ~0xF) {
1663 case POWERPC_EXCP_FP:
1664 EXCP_DUMP(env, "Floating point program exception\n");
1665 info.si_signo = TARGET_SIGFPE;
1666 info.si_errno = 0;
1667 switch (env->error_code & 0xF) {
1668 case POWERPC_EXCP_FP_OX:
1669 info.si_code = TARGET_FPE_FLTOVF;
1670 break;
1671 case POWERPC_EXCP_FP_UX:
1672 info.si_code = TARGET_FPE_FLTUND;
1673 break;
1674 case POWERPC_EXCP_FP_ZX:
1675 case POWERPC_EXCP_FP_VXZDZ:
1676 info.si_code = TARGET_FPE_FLTDIV;
1677 break;
1678 case POWERPC_EXCP_FP_XX:
1679 info.si_code = TARGET_FPE_FLTRES;
1680 break;
1681 case POWERPC_EXCP_FP_VXSOFT:
1682 info.si_code = TARGET_FPE_FLTINV;
1683 break;
1684 case POWERPC_EXCP_FP_VXSNAN:
1685 case POWERPC_EXCP_FP_VXISI:
1686 case POWERPC_EXCP_FP_VXIDI:
1687 case POWERPC_EXCP_FP_VXIMZ:
1688 case POWERPC_EXCP_FP_VXVC:
1689 case POWERPC_EXCP_FP_VXSQRT:
1690 case POWERPC_EXCP_FP_VXCVI:
1691 info.si_code = TARGET_FPE_FLTSUB;
1692 break;
1693 default:
1694 EXCP_DUMP(env, "Unknown floating point exception (%02x)\n",
1695 env->error_code);
1696 break;
1697 }
1698 break;
1699 case POWERPC_EXCP_INVAL:
1700 EXCP_DUMP(env, "Invalid instruction\n");
1701 info.si_signo = TARGET_SIGILL;
1702 info.si_errno = 0;
1703 switch (env->error_code & 0xF) {
1704 case POWERPC_EXCP_INVAL_INVAL:
1705 info.si_code = TARGET_ILL_ILLOPC;
1706 break;
1707 case POWERPC_EXCP_INVAL_LSWX:
1708 info.si_code = TARGET_ILL_ILLOPN;
1709 break;
1710 case POWERPC_EXCP_INVAL_SPR:
1711 info.si_code = TARGET_ILL_PRVREG;
1712 break;
1713 case POWERPC_EXCP_INVAL_FP:
1714 info.si_code = TARGET_ILL_COPROC;
1715 break;
1716 default:
1717 EXCP_DUMP(env, "Unknown invalid operation (%02x)\n",
1718 env->error_code & 0xF);
1719 info.si_code = TARGET_ILL_ILLADR;
1720 break;
1721 }
1722 break;
1723 case POWERPC_EXCP_PRIV:
1724 EXCP_DUMP(env, "Privilege violation\n");
1725 info.si_signo = TARGET_SIGILL;
1726 info.si_errno = 0;
1727 switch (env->error_code & 0xF) {
1728 case POWERPC_EXCP_PRIV_OPC:
1729 info.si_code = TARGET_ILL_PRVOPC;
1730 break;
1731 case POWERPC_EXCP_PRIV_REG:
1732 info.si_code = TARGET_ILL_PRVREG;
1733 break;
1734 default:
1735 EXCP_DUMP(env, "Unknown privilege violation (%02x)\n",
1736 env->error_code & 0xF);
1737 info.si_code = TARGET_ILL_PRVOPC;
1738 break;
1739 }
1740 break;
1741 case POWERPC_EXCP_TRAP:
1742 cpu_abort(cs, "Tried to call a TRAP\n");
1743 break;
1744 default:
1745 /* Should not happen ! */
1746 cpu_abort(cs, "Unknown program exception (%02x)\n",
1747 env->error_code);
1748 break;
1749 }
1750 info._sifields._sigfault._addr = env->nip - 4;
1751 queue_signal(env, info.si_signo, &info);
1752 break;
1753 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
1754 EXCP_DUMP(env, "No floating point allowed\n");
1755 info.si_signo = TARGET_SIGILL;
1756 info.si_errno = 0;
1757 info.si_code = TARGET_ILL_COPROC;
1758 info._sifields._sigfault._addr = env->nip - 4;
1759 queue_signal(env, info.si_signo, &info);
1760 break;
1761 case POWERPC_EXCP_SYSCALL: /* System call exception */
1762 cpu_abort(cs, "Syscall exception while in user mode. "
1763 "Aborting\n");
1764 break;
1765 case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
1766 EXCP_DUMP(env, "No APU instruction allowed\n");
1767 info.si_signo = TARGET_SIGILL;
1768 info.si_errno = 0;
1769 info.si_code = TARGET_ILL_COPROC;
1770 info._sifields._sigfault._addr = env->nip - 4;
1771 queue_signal(env, info.si_signo, &info);
1772 break;
1773 case POWERPC_EXCP_DECR: /* Decrementer exception */
1774 cpu_abort(cs, "Decrementer interrupt while in user mode. "
1775 "Aborting\n");
1776 break;
1777 case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
1778 cpu_abort(cs, "Fix interval timer interrupt while in user mode. "
1779 "Aborting\n");
1780 break;
1781 case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
1782 cpu_abort(cs, "Watchdog timer interrupt while in user mode. "
1783 "Aborting\n");
1784 break;
1785 case POWERPC_EXCP_DTLB: /* Data TLB error */
1786 cpu_abort(cs, "Data TLB exception while in user mode. "
1787 "Aborting\n");
1788 break;
1789 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
1790 cpu_abort(cs, "Instruction TLB exception while in user mode. "
1791 "Aborting\n");
1792 break;
1793 case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */
1794 EXCP_DUMP(env, "No SPE/floating-point instruction allowed\n");
1795 info.si_signo = TARGET_SIGILL;
1796 info.si_errno = 0;
1797 info.si_code = TARGET_ILL_COPROC;
1798 info._sifields._sigfault._addr = env->nip - 4;
1799 queue_signal(env, info.si_signo, &info);
1800 break;
1801 case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */
1802 cpu_abort(cs, "Embedded floating-point data IRQ not handled\n");
1803 break;
1804 case POWERPC_EXCP_EFPRI: /* Embedded floating-point round IRQ */
1805 cpu_abort(cs, "Embedded floating-point round IRQ not handled\n");
1806 break;
1807 case POWERPC_EXCP_EPERFM: /* Embedded performance monitor IRQ */
1808 cpu_abort(cs, "Performance monitor exception not handled\n");
1809 break;
1810 case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
1811 cpu_abort(cs, "Doorbell interrupt while in user mode. "
1812 "Aborting\n");
1813 break;
1814 case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
1815 cpu_abort(cs, "Doorbell critical interrupt while in user mode. "
1816 "Aborting\n");
1817 break;
1818 case POWERPC_EXCP_RESET: /* System reset exception */
1819 cpu_abort(cs, "Reset interrupt while in user mode. "
1820 "Aborting\n");
1821 break;
1822 case POWERPC_EXCP_DSEG: /* Data segment exception */
1823 cpu_abort(cs, "Data segment exception while in user mode. "
1824 "Aborting\n");
1825 break;
1826 case POWERPC_EXCP_ISEG: /* Instruction segment exception */
1827 cpu_abort(cs, "Instruction segment exception "
1828 "while in user mode. Aborting\n");
1829 break;
1830 /* PowerPC 64 with hypervisor mode support */
1831 case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
1832 cpu_abort(cs, "Hypervisor decrementer interrupt "
1833 "while in user mode. Aborting\n");
1834 break;
1835 case POWERPC_EXCP_TRACE: /* Trace exception */
1836 /* Nothing to do:
1837 * we use this exception to emulate step-by-step execution mode.
1838 */
1839 break;
1840 /* PowerPC 64 with hypervisor mode support */
1841 case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
1842 cpu_abort(cs, "Hypervisor data storage exception "
1843 "while in user mode. Aborting\n");
1844 break;
1845 case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */
1846 cpu_abort(cs, "Hypervisor instruction storage exception "
1847 "while in user mode. Aborting\n");
1848 break;
1849 case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
1850 cpu_abort(cs, "Hypervisor data segment exception "
1851 "while in user mode. Aborting\n");
1852 break;
1853 case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */
1854 cpu_abort(cs, "Hypervisor instruction segment exception "
1855 "while in user mode. Aborting\n");
1856 break;
1857 case POWERPC_EXCP_VPU: /* Vector unavailable exception */
1858 EXCP_DUMP(env, "No Altivec instructions allowed\n");
1859 info.si_signo = TARGET_SIGILL;
1860 info.si_errno = 0;
1861 info.si_code = TARGET_ILL_COPROC;
1862 info._sifields._sigfault._addr = env->nip - 4;
1863 queue_signal(env, info.si_signo, &info);
1864 break;
1865 case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */
1866 cpu_abort(cs, "Programmable interval timer interrupt "
1867 "while in user mode. Aborting\n");
1868 break;
1869 case POWERPC_EXCP_IO: /* IO error exception */
1870 cpu_abort(cs, "IO error exception while in user mode. "
1871 "Aborting\n");
1872 break;
1873 case POWERPC_EXCP_RUNM: /* Run mode exception */
1874 cpu_abort(cs, "Run mode exception while in user mode. "
1875 "Aborting\n");
1876 break;
1877 case POWERPC_EXCP_EMUL: /* Emulation trap exception */
1878 cpu_abort(cs, "Emulation trap exception not handled\n");
1879 break;
1880 case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
1881 cpu_abort(cs, "Instruction fetch TLB exception "
1882 "while in user-mode. Aborting");
1883 break;
1884 case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
1885 cpu_abort(cs, "Data load TLB exception while in user-mode. "
1886 "Aborting");
1887 break;
1888 case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
1889 cpu_abort(cs, "Data store TLB exception while in user-mode. "
1890 "Aborting");
1891 break;
1892 case POWERPC_EXCP_FPA: /* Floating-point assist exception */
1893 cpu_abort(cs, "Floating-point assist exception not handled\n");
1894 break;
1895 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
1896 cpu_abort(cs, "Instruction address breakpoint exception "
1897 "not handled\n");
1898 break;
1899 case POWERPC_EXCP_SMI: /* System management interrupt */
1900 cpu_abort(cs, "System management interrupt while in user mode. "
1901 "Aborting\n");
1902 break;
1903 case POWERPC_EXCP_THERM: /* Thermal interrupt */
1904 cpu_abort(cs, "Thermal interrupt interrupt while in user mode. "
1905 "Aborting\n");
1906 break;
1907 case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */
1908 cpu_abort(cs, "Performance monitor exception not handled\n");
1909 break;
1910 case POWERPC_EXCP_VPUA: /* Vector assist exception */
1911 cpu_abort(cs, "Vector assist exception not handled\n");
1912 break;
1913 case POWERPC_EXCP_SOFTP: /* Soft patch exception */
1914 cpu_abort(cs, "Soft patch exception not handled\n");
1915 break;
1916 case POWERPC_EXCP_MAINT: /* Maintenance exception */
1917 cpu_abort(cs, "Maintenance exception while in user mode. "
1918 "Aborting\n");
1919 break;
1920 case POWERPC_EXCP_STOP: /* stop translation */
1921 /* We did invalidate the instruction cache. Go on */
1922 break;
1923 case POWERPC_EXCP_BRANCH: /* branch instruction: */
1924 /* We just stopped because of a branch. Go on */
1925 break;
1926 case POWERPC_EXCP_SYSCALL_USER:
1927 /* system call in user-mode emulation */
1928 /* WARNING:
1929 * PPC ABI uses overflow flag in cr0 to signal an error
1930 * in syscalls.
1931 */
1932 env->crf[0] &= ~0x1;
1933 ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
1934 env->gpr[5], env->gpr[6], env->gpr[7],
1935 env->gpr[8], 0, 0);
1936 if (ret == (target_ulong)(-TARGET_QEMU_ESIGRETURN)) {
1937 /* Returning from a successful sigreturn syscall.
1938 Avoid corrupting register state. */
1939 break;
1940 }
1941 if (ret > (target_ulong)(-515)) {
1942 env->crf[0] |= 0x1;
1943 ret = -ret;
1944 }
1945 env->gpr[3] = ret;
1946 break;
1947 case POWERPC_EXCP_STCX:
1948 if (do_store_exclusive(env)) {
1949 info.si_signo = TARGET_SIGSEGV;
1950 info.si_errno = 0;
1951 info.si_code = TARGET_SEGV_MAPERR;
1952 info._sifields._sigfault._addr = env->nip;
1953 queue_signal(env, info.si_signo, &info);
1954 }
1955 break;
1956 case EXCP_DEBUG:
1957 {
1958 int sig;
1959
1960 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
1961 if (sig) {
1962 info.si_signo = sig;
1963 info.si_errno = 0;
1964 info.si_code = TARGET_TRAP_BRKPT;
1965 queue_signal(env, info.si_signo, &info);
1966 }
1967 }
1968 break;
1969 case EXCP_INTERRUPT:
1970 /* just indicate that signals should be handled asap */
1971 break;
1972 default:
1973 cpu_abort(cs, "Unknown exception 0x%d. Aborting\n", trapnr);
1974 break;
1975 }
1976 process_pending_signals(env);
1977 }
1978 }
1979 #endif
1980
1981 #ifdef TARGET_MIPS
1982
1983 # ifdef TARGET_ABI_MIPSO32
1984 # define MIPS_SYS(name, args) args,
1985 static const uint8_t mips_syscall_args[] = {
1986 MIPS_SYS(sys_syscall , 8) /* 4000 */
1987 MIPS_SYS(sys_exit , 1)
1988 MIPS_SYS(sys_fork , 0)
1989 MIPS_SYS(sys_read , 3)
1990 MIPS_SYS(sys_write , 3)
1991 MIPS_SYS(sys_open , 3) /* 4005 */
1992 MIPS_SYS(sys_close , 1)
1993 MIPS_SYS(sys_waitpid , 3)
1994 MIPS_SYS(sys_creat , 2)
1995 MIPS_SYS(sys_link , 2)
1996 MIPS_SYS(sys_unlink , 1) /* 4010 */
1997 MIPS_SYS(sys_execve , 0)
1998 MIPS_SYS(sys_chdir , 1)
1999 MIPS_SYS(sys_time , 1)
2000 MIPS_SYS(sys_mknod , 3)
2001 MIPS_SYS(sys_chmod , 2) /* 4015 */
2002 MIPS_SYS(sys_lchown , 3)
2003 MIPS_SYS(sys_ni_syscall , 0)
2004 MIPS_SYS(sys_ni_syscall , 0) /* was sys_stat */
2005 MIPS_SYS(sys_lseek , 3)
2006 MIPS_SYS(sys_getpid , 0) /* 4020 */
2007 MIPS_SYS(sys_mount , 5)
2008 MIPS_SYS(sys_umount , 1)
2009 MIPS_SYS(sys_setuid , 1)
2010 MIPS_SYS(sys_getuid , 0)
2011 MIPS_SYS(sys_stime , 1) /* 4025 */
2012 MIPS_SYS(sys_ptrace , 4)
2013 MIPS_SYS(sys_alarm , 1)
2014 MIPS_SYS(sys_ni_syscall , 0) /* was sys_fstat */
2015 MIPS_SYS(sys_pause , 0)
2016 MIPS_SYS(sys_utime , 2) /* 4030 */
2017 MIPS_SYS(sys_ni_syscall , 0)
2018 MIPS_SYS(sys_ni_syscall , 0)
2019 MIPS_SYS(sys_access , 2)
2020 MIPS_SYS(sys_nice , 1)
2021 MIPS_SYS(sys_ni_syscall , 0) /* 4035 */
2022 MIPS_SYS(sys_sync , 0)
2023 MIPS_SYS(sys_kill , 2)
2024 MIPS_SYS(sys_rename , 2)
2025 MIPS_SYS(sys_mkdir , 2)
2026 MIPS_SYS(sys_rmdir , 1) /* 4040 */
2027 MIPS_SYS(sys_dup , 1)
2028 MIPS_SYS(sys_pipe , 0)
2029 MIPS_SYS(sys_times , 1)
2030 MIPS_SYS(sys_ni_syscall , 0)
2031 MIPS_SYS(sys_brk , 1) /* 4045 */
2032 MIPS_SYS(sys_setgid , 1)
2033 MIPS_SYS(sys_getgid , 0)
2034 MIPS_SYS(sys_ni_syscall , 0) /* was signal(2) */
2035 MIPS_SYS(sys_geteuid , 0)
2036 MIPS_SYS(sys_getegid , 0) /* 4050 */
2037 MIPS_SYS(sys_acct , 0)
2038 MIPS_SYS(sys_umount2 , 2)
2039 MIPS_SYS(sys_ni_syscall , 0)
2040 MIPS_SYS(sys_ioctl , 3)
2041 MIPS_SYS(sys_fcntl , 3) /* 4055 */
2042 MIPS_SYS(sys_ni_syscall , 2)
2043 MIPS_SYS(sys_setpgid , 2)
2044 MIPS_SYS(sys_ni_syscall , 0)
2045 MIPS_SYS(sys_olduname , 1)
2046 MIPS_SYS(sys_umask , 1) /* 4060 */
2047 MIPS_SYS(sys_chroot , 1)
2048 MIPS_SYS(sys_ustat , 2)
2049 MIPS_SYS(sys_dup2 , 2)
2050 MIPS_SYS(sys_getppid , 0)
2051 MIPS_SYS(sys_getpgrp , 0) /* 4065 */
2052 MIPS_SYS(sys_setsid , 0)
2053 MIPS_SYS(sys_sigaction , 3)
2054 MIPS_SYS(sys_sgetmask , 0)
2055 MIPS_SYS(sys_ssetmask , 1)
2056 MIPS_SYS(sys_setreuid , 2) /* 4070 */
2057 MIPS_SYS(sys_setregid , 2)
2058 MIPS_SYS(sys_sigsuspend , 0)
2059 MIPS_SYS(sys_sigpending , 1)
2060 MIPS_SYS(sys_sethostname , 2)
2061 MIPS_SYS(sys_setrlimit , 2) /* 4075 */
2062 MIPS_SYS(sys_getrlimit , 2)
2063 MIPS_SYS(sys_getrusage , 2)
2064 MIPS_SYS(sys_gettimeofday, 2)
2065 MIPS_SYS(sys_settimeofday, 2)
2066 MIPS_SYS(sys_getgroups , 2) /* 4080 */
2067 MIPS_SYS(sys_setgroups , 2)
2068 MIPS_SYS(sys_ni_syscall , 0) /* old_select */
2069 MIPS_SYS(sys_symlink , 2)
2070 MIPS_SYS(sys_ni_syscall , 0) /* was sys_lstat */
2071 MIPS_SYS(sys_readlink , 3) /* 4085 */
2072 MIPS_SYS(sys_uselib , 1)
2073 MIPS_SYS(sys_swapon , 2)
2074 MIPS_SYS(sys_reboot , 3)
2075 MIPS_SYS(old_readdir , 3)
2076 MIPS_SYS(old_mmap , 6) /* 4090 */
2077 MIPS_SYS(sys_munmap , 2)
2078 MIPS_SYS(sys_truncate , 2)
2079 MIPS_SYS(sys_ftruncate , 2)
2080 MIPS_SYS(sys_fchmod , 2)
2081 MIPS_SYS(sys_fchown , 3) /* 4095 */
2082 MIPS_SYS(sys_getpriority , 2)
2083 MIPS_SYS(sys_setpriority , 3)
2084 MIPS_SYS(sys_ni_syscall , 0)
2085 MIPS_SYS(sys_statfs , 2)
2086 MIPS_SYS(sys_fstatfs , 2) /* 4100 */
2087 MIPS_SYS(sys_ni_syscall , 0) /* was ioperm(2) */
2088 MIPS_SYS(sys_socketcall , 2)
2089 MIPS_SYS(sys_syslog , 3)
2090 MIPS_SYS(sys_setitimer , 3)
2091 MIPS_SYS(sys_getitimer , 2) /* 4105 */
2092 MIPS_SYS(sys_newstat , 2)
2093 MIPS_SYS(sys_newlstat , 2)
2094 MIPS_SYS(sys_newfstat , 2)
2095 MIPS_SYS(sys_uname , 1)
2096 MIPS_SYS(sys_ni_syscall , 0) /* 4110 was iopl(2) */
2097 MIPS_SYS(sys_vhangup , 0)
2098 MIPS_SYS(sys_ni_syscall , 0) /* was sys_idle() */
2099 MIPS_SYS(sys_ni_syscall , 0) /* was sys_vm86 */
2100 MIPS_SYS(sys_wait4 , 4)
2101 MIPS_SYS(sys_swapoff , 1) /* 4115 */
2102 MIPS_SYS(sys_sysinfo , 1)
2103 MIPS_SYS(sys_ipc , 6)
2104 MIPS_SYS(sys_fsync , 1)
2105 MIPS_SYS(sys_sigreturn , 0)
2106 MIPS_SYS(sys_clone , 6) /* 4120 */
2107 MIPS_SYS(sys_setdomainname, 2)
2108 MIPS_SYS(sys_newuname , 1)
2109 MIPS_SYS(sys_ni_syscall , 0) /* sys_modify_ldt */
2110 MIPS_SYS(sys_adjtimex , 1)
2111 MIPS_SYS(sys_mprotect , 3) /* 4125 */
2112 MIPS_SYS(sys_sigprocmask , 3)
2113 MIPS_SYS(sys_ni_syscall , 0) /* was create_module */
2114 MIPS_SYS(sys_init_module , 5)
2115 MIPS_SYS(sys_delete_module, 1)
2116 MIPS_SYS(sys_ni_syscall , 0) /* 4130 was get_kernel_syms */
2117 MIPS_SYS(sys_quotactl , 0)
2118 MIPS_SYS(sys_getpgid , 1)
2119 MIPS_SYS(sys_fchdir , 1)
2120 MIPS_SYS(sys_bdflush , 2)
2121 MIPS_SYS(sys_sysfs , 3) /* 4135 */
2122 MIPS_SYS(sys_personality , 1)
2123 MIPS_SYS(sys_ni_syscall , 0) /* for afs_syscall */
2124 MIPS_SYS(sys_setfsuid , 1)
2125 MIPS_SYS(sys_setfsgid , 1)
2126 MIPS_SYS(sys_llseek , 5) /* 4140 */
2127 MIPS_SYS(sys_getdents , 3)
2128 MIPS_SYS(sys_select , 5)
2129 MIPS_SYS(sys_flock , 2)
2130 MIPS_SYS(sys_msync , 3)
2131 MIPS_SYS(sys_readv , 3) /* 4145 */
2132 MIPS_SYS(sys_writev , 3)
2133 MIPS_SYS(sys_cacheflush , 3)
2134 MIPS_SYS(sys_cachectl , 3)
2135 MIPS_SYS(sys_sysmips , 4)
2136 MIPS_SYS(sys_ni_syscall , 0) /* 4150 */
2137 MIPS_SYS(sys_getsid , 1)
2138 MIPS_SYS(sys_fdatasync , 0)
2139 MIPS_SYS(sys_sysctl , 1)
2140 MIPS_SYS(sys_mlock , 2)
2141 MIPS_SYS(sys_munlock , 2) /* 4155 */
2142 MIPS_SYS(sys_mlockall , 1)
2143 MIPS_SYS(sys_munlockall , 0)
2144 MIPS_SYS(sys_sched_setparam, 2)
2145 MIPS_SYS(sys_sched_getparam, 2)
2146 MIPS_SYS(sys_sched_setscheduler, 3) /* 4160 */
2147 MIPS_SYS(sys_sched_getscheduler, 1)
2148 MIPS_SYS(sys_sched_yield , 0)
2149 MIPS_SYS(sys_sched_get_priority_max, 1)
2150 MIPS_SYS(sys_sched_get_priority_min, 1)
2151 MIPS_SYS(sys_sched_rr_get_interval, 2) /* 4165 */
2152 MIPS_SYS(sys_nanosleep, 2)
2153 MIPS_SYS(sys_mremap , 5)
2154 MIPS_SYS(sys_accept , 3)
2155 MIPS_SYS(sys_bind , 3)
2156 MIPS_SYS(sys_connect , 3) /* 4170 */
2157 MIPS_SYS(sys_getpeername , 3)
2158 MIPS_SYS(sys_getsockname , 3)
2159 MIPS_SYS(sys_getsockopt , 5)
2160 MIPS_SYS(sys_listen , 2)
2161 MIPS_SYS(sys_recv , 4) /* 4175 */
2162 MIPS_SYS(sys_recvfrom , 6)
2163 MIPS_SYS(sys_recvmsg , 3)
2164 MIPS_SYS(sys_send , 4)
2165 MIPS_SYS(sys_sendmsg , 3)
2166 MIPS_SYS(sys_sendto , 6) /* 4180 */
2167 MIPS_SYS(sys_setsockopt , 5)
2168 MIPS_SYS(sys_shutdown , 2)
2169 MIPS_SYS(sys_socket , 3)
2170 MIPS_SYS(sys_socketpair , 4)
2171 MIPS_SYS(sys_setresuid , 3) /* 4185 */
2172 MIPS_SYS(sys_getresuid , 3)
2173 MIPS_SYS(sys_ni_syscall , 0) /* was sys_query_module */
2174 MIPS_SYS(sys_poll , 3)
2175 MIPS_SYS(sys_nfsservctl , 3)
2176 MIPS_SYS(sys_setresgid , 3) /* 4190 */
2177 MIPS_SYS(sys_getresgid , 3)
2178 MIPS_SYS(sys_prctl , 5)
2179 MIPS_SYS(sys_rt_sigreturn, 0)
2180 MIPS_SYS(sys_rt_sigaction, 4)
2181 MIPS_SYS(sys_rt_sigprocmask, 4) /* 4195 */
2182 MIPS_SYS(sys_rt_sigpending, 2)
2183 MIPS_SYS(sys_rt_sigtimedwait, 4)
2184 MIPS_SYS(sys_rt_sigqueueinfo, 3)
2185 MIPS_SYS(sys_rt_sigsuspend, 0)
2186 MIPS_SYS(sys_pread64 , 6) /* 4200 */
2187 MIPS_SYS(sys_pwrite64 , 6)
2188 MIPS_SYS(sys_chown , 3)
2189 MIPS_SYS(sys_getcwd , 2)
2190 MIPS_SYS(sys_capget , 2)
2191 MIPS_SYS(sys_capset , 2) /* 4205 */
2192 MIPS_SYS(sys_sigaltstack , 2)
2193 MIPS_SYS(sys_sendfile , 4)
2194 MIPS_SYS(sys_ni_syscall , 0)
2195 MIPS_SYS(sys_ni_syscall , 0)
2196 MIPS_SYS(sys_mmap2 , 6) /* 4210 */
2197 MIPS_SYS(sys_truncate64 , 4)
2198 MIPS_SYS(sys_ftruncate64 , 4)
2199 MIPS_SYS(sys_stat64 , 2)
2200 MIPS_SYS(sys_lstat64 , 2)
2201 MIPS_SYS(sys_fstat64 , 2) /* 4215 */
2202 MIPS_SYS(sys_pivot_root , 2)
2203 MIPS_SYS(sys_mincore , 3)
2204 MIPS_SYS(sys_madvise , 3)
2205 MIPS_SYS(sys_getdents64 , 3)
2206 MIPS_SYS(sys_fcntl64 , 3) /* 4220 */
2207 MIPS_SYS(sys_ni_syscall , 0)
2208 MIPS_SYS(sys_gettid , 0)
2209 MIPS_SYS(sys_readahead , 5)
2210 MIPS_SYS(sys_setxattr , 5)
2211 MIPS_SYS(sys_lsetxattr , 5) /* 4225 */
2212 MIPS_SYS(sys_fsetxattr , 5)
2213 MIPS_SYS(sys_getxattr , 4)
2214 MIPS_SYS(sys_lgetxattr , 4)
2215 MIPS_SYS(sys_fgetxattr , 4)
2216 MIPS_SYS(sys_listxattr , 3) /* 4230 */
2217 MIPS_SYS(sys_llistxattr , 3)
2218 MIPS_SYS(sys_flistxattr , 3)
2219 MIPS_SYS(sys_removexattr , 2)
2220 MIPS_SYS(sys_lremovexattr, 2)
2221 MIPS_SYS(sys_fremovexattr, 2) /* 4235 */
2222 MIPS_SYS(sys_tkill , 2)
2223 MIPS_SYS(sys_sendfile64 , 5)
2224 MIPS_SYS(sys_futex , 6)
2225 MIPS_SYS(sys_sched_setaffinity, 3)
2226 MIPS_SYS(sys_sched_getaffinity, 3) /* 4240 */
2227 MIPS_SYS(sys_io_setup , 2)
2228 MIPS_SYS(sys_io_destroy , 1)
2229 MIPS_SYS(sys_io_getevents, 5)
2230 MIPS_SYS(sys_io_submit , 3)
2231 MIPS_SYS(sys_io_cancel , 3) /* 4245 */
2232 MIPS_SYS(sys_exit_group , 1)
2233 MIPS_SYS(sys_lookup_dcookie, 3)
2234 MIPS_SYS(sys_epoll_create, 1)
2235 MIPS_SYS(sys_epoll_ctl , 4)
2236 MIPS_SYS(sys_epoll_wait , 3) /* 4250 */
2237 MIPS_SYS(sys_remap_file_pages, 5)
2238 MIPS_SYS(sys_set_tid_address, 1)
2239 MIPS_SYS(sys_restart_syscall, 0)
2240 MIPS_SYS(sys_fadvise64_64, 7)
2241 MIPS_SYS(sys_statfs64 , 3) /* 4255 */
2242 MIPS_SYS(sys_fstatfs64 , 2)
2243 MIPS_SYS(sys_timer_create, 3)
2244 MIPS_SYS(sys_timer_settime, 4)
2245 MIPS_SYS(sys_timer_gettime, 2)
2246 MIPS_SYS(sys_timer_getoverrun, 1) /* 4260 */
2247 MIPS_SYS(sys_timer_delete, 1)
2248 MIPS_SYS(sys_clock_settime, 2)
2249 MIPS_SYS(sys_clock_gettime, 2)
2250 MIPS_SYS(sys_clock_getres, 2)
2251 MIPS_SYS(sys_clock_nanosleep, 4) /* 4265 */
2252 MIPS_SYS(sys_tgkill , 3)
2253 MIPS_SYS(sys_utimes , 2)
2254 MIPS_SYS(sys_mbind , 4)
2255 MIPS_SYS(sys_ni_syscall , 0) /* sys_get_mempolicy */
2256 MIPS_SYS(sys_ni_syscall , 0) /* 4270 sys_set_mempolicy */
2257 MIPS_SYS(sys_mq_open , 4)
2258 MIPS_SYS(sys_mq_unlink , 1)
2259 MIPS_SYS(sys_mq_timedsend, 5)
2260 MIPS_SYS(sys_mq_timedreceive, 5)
2261 MIPS_SYS(sys_mq_notify , 2) /* 4275 */
2262 MIPS_SYS(sys_mq_getsetattr, 3)
2263 MIPS_SYS(sys_ni_syscall , 0) /* sys_vserver */
2264 MIPS_SYS(sys_waitid , 4)
2265 MIPS_SYS(sys_ni_syscall , 0) /* available, was setaltroot */
2266 MIPS_SYS(sys_add_key , 5)
2267 MIPS_SYS(sys_request_key, 4)
2268 MIPS_SYS(sys_keyctl , 5)
2269 MIPS_SYS(sys_set_thread_area, 1)
2270 MIPS_SYS(sys_inotify_init, 0)
2271 MIPS_SYS(sys_inotify_add_watch, 3) /* 4285 */
2272 MIPS_SYS(sys_inotify_rm_watch, 2)
2273 MIPS_SYS(sys_migrate_pages, 4)
2274 MIPS_SYS(sys_openat, 4)
2275 MIPS_SYS(sys_mkdirat, 3)
2276 MIPS_SYS(sys_mknodat, 4) /* 4290 */
2277 MIPS_SYS(sys_fchownat, 5)
2278 MIPS_SYS(sys_futimesat, 3)
2279 MIPS_SYS(sys_fstatat64, 4)
2280 MIPS_SYS(sys_unlinkat, 3)
2281 MIPS_SYS(sys_renameat, 4) /* 4295 */
2282 MIPS_SYS(sys_linkat, 5)
2283 MIPS_SYS(sys_symlinkat, 3)
2284 MIPS_SYS(sys_readlinkat, 4)
2285 MIPS_SYS(sys_fchmodat, 3)
2286 MIPS_SYS(sys_faccessat, 3) /* 4300 */
2287 MIPS_SYS(sys_pselect6, 6)
2288 MIPS_SYS(sys_ppoll, 5)
2289 MIPS_SYS(sys_unshare, 1)
2290 MIPS_SYS(sys_splice, 6)
2291 MIPS_SYS(sys_sync_file_range, 7) /* 4305 */
2292 MIPS_SYS(sys_tee, 4)
2293 MIPS_SYS(sys_vmsplice, 4)
2294 MIPS_SYS(sys_move_pages, 6)
2295 MIPS_SYS(sys_set_robust_list, 2)
2296 MIPS_SYS(sys_get_robust_list, 3) /* 4310 */
2297 MIPS_SYS(sys_kexec_load, 4)
2298 MIPS_SYS(sys_getcpu, 3)
2299 MIPS_SYS(sys_epoll_pwait, 6)
2300 MIPS_SYS(sys_ioprio_set, 3)
2301 MIPS_SYS(sys_ioprio_get, 2)
2302 MIPS_SYS(sys_utimensat, 4)
2303 MIPS_SYS(sys_signalfd, 3)
2304 MIPS_SYS(sys_ni_syscall, 0) /* was timerfd */
2305 MIPS_SYS(sys_eventfd, 1)
2306 MIPS_SYS(sys_fallocate, 6) /* 4320 */
2307 MIPS_SYS(sys_timerfd_create, 2)
2308 MIPS_SYS(sys_timerfd_gettime, 2)
2309 MIPS_SYS(sys_timerfd_settime, 4)
2310 MIPS_SYS(sys_signalfd4, 4)
2311 MIPS_SYS(sys_eventfd2, 2) /* 4325 */
2312 MIPS_SYS(sys_epoll_create1, 1)
2313 MIPS_SYS(sys_dup3, 3)
2314 MIPS_SYS(sys_pipe2, 2)
2315 MIPS_SYS(sys_inotify_init1, 1)
2316 MIPS_SYS(sys_preadv, 6) /* 4330 */
2317 MIPS_SYS(sys_pwritev, 6)
2318 MIPS_SYS(sys_rt_tgsigqueueinfo, 4)
2319 MIPS_SYS(sys_perf_event_open, 5)
2320 MIPS_SYS(sys_accept4, 4)
2321 MIPS_SYS(sys_recvmmsg, 5) /* 4335 */
2322 MIPS_SYS(sys_fanotify_init, 2)
2323 MIPS_SYS(sys_fanotify_mark, 6)
2324 MIPS_SYS(sys_prlimit64, 4)
2325 MIPS_SYS(sys_name_to_handle_at, 5)
2326 MIPS_SYS(sys_open_by_handle_at, 3) /* 4340 */
2327 MIPS_SYS(sys_clock_adjtime, 2)
2328 MIPS_SYS(sys_syncfs, 1)
2329 };
2330 # undef MIPS_SYS
2331 # endif /* O32 */
2332
2333 static int do_store_exclusive(CPUMIPSState *env)
2334 {
2335 target_ulong addr;
2336 target_ulong page_addr;
2337 target_ulong val;
2338 int flags;
2339 int segv = 0;
2340 int reg;
2341 int d;
2342
2343 addr = env->lladdr;
2344 page_addr = addr & TARGET_PAGE_MASK;
2345 start_exclusive();
2346 mmap_lock();
2347 flags = page_get_flags(page_addr);
2348 if ((flags & PAGE_READ) == 0) {
2349 segv = 1;
2350 } else {
2351 reg = env->llreg & 0x1f;
2352 d = (env->llreg & 0x20) != 0;
2353 if (d) {
2354 segv = get_user_s64(val, addr);
2355 } else {
2356 segv = get_user_s32(val, addr);
2357 }
2358 if (!segv) {
2359 if (val != env->llval) {
2360 env->active_tc.gpr[reg] = 0;
2361 } else {
2362 if (d) {
2363 segv = put_user_u64(env->llnewval, addr);
2364 } else {
2365 segv = put_user_u32(env->llnewval, addr);
2366 }
2367 if (!segv) {
2368 env->active_tc.gpr[reg] = 1;
2369 }
2370 }
2371 }
2372 }
2373 env->lladdr = -1;
2374 if (!segv) {
2375 env->active_tc.PC += 4;
2376 }
2377 mmap_unlock();
2378 end_exclusive();
2379 return segv;
2380 }
2381
2382 /* Break codes */
2383 enum {
2384 BRK_OVERFLOW = 6,
2385 BRK_DIVZERO = 7
2386 };
2387
2388 static int do_break(CPUMIPSState *env, target_siginfo_t *info,
2389 unsigned int code)
2390 {
2391 int ret = -1;
2392
2393 switch (code) {
2394 case BRK_OVERFLOW:
2395 case BRK_DIVZERO:
2396 info->si_signo = TARGET_SIGFPE;
2397 info->si_errno = 0;
2398 info->si_code = (code == BRK_OVERFLOW) ? FPE_INTOVF : FPE_INTDIV;
2399 queue_signal(env, info->si_signo, &*info);
2400 ret = 0;
2401 break;
2402 default:
2403 info->si_signo = TARGET_SIGTRAP;
2404 info->si_errno = 0;
2405 queue_signal(env, info->si_signo, &*info);
2406 ret = 0;
2407 break;
2408 }
2409
2410 return ret;
2411 }
2412
2413 void cpu_loop(CPUMIPSState *env)
2414 {
2415 CPUState *cs = CPU(mips_env_get_cpu(env));
2416 target_siginfo_t info;
2417 int trapnr;
2418 abi_long ret;
2419 # ifdef TARGET_ABI_MIPSO32
2420 unsigned int syscall_num;
2421 # endif
2422
2423 for(;;) {
2424 cpu_exec_start(cs);
2425 trapnr = cpu_mips_exec(env);
2426 cpu_exec_end(cs);
2427 switch(trapnr) {
2428 case EXCP_SYSCALL:
2429 env->active_tc.PC += 4;
2430 # ifdef TARGET_ABI_MIPSO32
2431 syscall_num = env->active_tc.gpr[2] - 4000;
2432 if (syscall_num >= sizeof(mips_syscall_args)) {
2433 ret = -TARGET_ENOSYS;
2434 } else {
2435 int nb_args;
2436 abi_ulong sp_reg;
2437 abi_ulong arg5 = 0, arg6 = 0, arg7 = 0, arg8 = 0;
2438
2439 nb_args = mips_syscall_args[syscall_num];
2440 sp_reg = env->active_tc.gpr[29];
2441 switch (nb_args) {
2442 /* these arguments are taken from the stack */
2443 case 8:
2444 if ((ret = get_user_ual(arg8, sp_reg + 28)) != 0) {
2445 goto done_syscall;
2446 }
2447 case 7:
2448 if ((ret = get_user_ual(arg7, sp_reg + 24)) != 0) {
2449 goto done_syscall;
2450 }
2451 case 6:
2452 if ((ret = get_user_ual(arg6, sp_reg + 20)) != 0) {
2453 goto done_syscall;
2454 }
2455 case 5:
2456 if ((ret = get_user_ual(arg5, sp_reg + 16)) != 0) {
2457 goto done_syscall;
2458 }
2459 default:
2460 break;
2461 }
2462 ret = do_syscall(env, env->active_tc.gpr[2],
2463 env->active_tc.gpr[4],
2464 env->active_tc.gpr[5],
2465 env->active_tc.gpr[6],
2466 env->active_tc.gpr[7],
2467 arg5, arg6, arg7, arg8);
2468 }
2469 done_syscall:
2470 # else
2471 ret = do_syscall(env, env->active_tc.gpr[2],
2472 env->active_tc.gpr[4], env->active_tc.gpr[5],
2473 env->active_tc.gpr[6], env->active_tc.gpr[7],
2474 env->active_tc.gpr[8], env->active_tc.gpr[9],
2475 env->active_tc.gpr[10], env->active_tc.gpr[11]);
2476 # endif /* O32 */
2477 if (ret == -TARGET_QEMU_ESIGRETURN) {
2478 /* Returning from a successful sigreturn syscall.
2479 Avoid clobbering register state. */
2480 break;
2481 }
2482 if ((abi_ulong)ret >= (abi_ulong)-1133) {
2483 env->active_tc.gpr[7] = 1; /* error flag */
2484 ret = -ret;
2485 } else {
2486 env->active_tc.gpr[7] = 0; /* error flag */
2487 }
2488 env->active_tc.gpr[2] = ret;
2489 break;
2490 case EXCP_TLBL:
2491 case EXCP_TLBS:
2492 case EXCP_AdEL:
2493 case EXCP_AdES:
2494 info.si_signo = TARGET_SIGSEGV;
2495 info.si_errno = 0;
2496 /* XXX: check env->error_code */
2497 info.si_code = TARGET_SEGV_MAPERR;
2498 info._sifields._sigfault._addr = env->CP0_BadVAddr;
2499 queue_signal(env, info.si_signo, &info);
2500 break;
2501 case EXCP_CpU:
2502 case EXCP_RI:
2503 info.si_signo = TARGET_SIGILL;
2504 info.si_errno = 0;
2505 info.si_code = 0;
2506 queue_signal(env, info.si_signo, &info);
2507 break;
2508 case EXCP_INTERRUPT:
2509 /* just indicate that signals should be handled asap */
2510 break;
2511 case EXCP_DEBUG:
2512 {
2513 int sig;
2514
2515 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
2516 if (sig)
2517 {
2518 info.si_signo = sig;
2519 info.si_errno = 0;
2520 info.si_code = TARGET_TRAP_BRKPT;
2521 queue_signal(env, info.si_signo, &info);
2522 }
2523 }
2524 break;
2525 case EXCP_SC:
2526 if (do_store_exclusive(env)) {
2527 info.si_signo = TARGET_SIGSEGV;
2528 info.si_errno = 0;
2529 info.si_code = TARGET_SEGV_MAPERR;
2530 info._sifields._sigfault._addr = env->active_tc.PC;
2531 queue_signal(env, info.si_signo, &info);
2532 }
2533 break;
2534 case EXCP_DSPDIS:
2535 info.si_signo = TARGET_SIGILL;
2536 info.si_errno = 0;
2537 info.si_code = TARGET_ILL_ILLOPC;
2538 queue_signal(env, info.si_signo, &info);
2539 break;
2540 /* The code below was inspired by the MIPS Linux kernel trap
2541 * handling code in arch/mips/kernel/traps.c.
2542 */
2543 case EXCP_BREAK:
2544 {
2545 abi_ulong trap_instr;
2546 unsigned int code;
2547
2548 if (env->hflags & MIPS_HFLAG_M16) {
2549 if (env->insn_flags & ASE_MICROMIPS) {
2550 /* microMIPS mode */
2551 ret = get_user_u16(trap_instr, env->active_tc.PC);
2552 if (ret != 0) {
2553 goto error;
2554 }
2555
2556 if ((trap_instr >> 10) == 0x11) {
2557 /* 16-bit instruction */
2558 code = trap_instr & 0xf;
2559 } else {
2560 /* 32-bit instruction */
2561 abi_ulong instr_lo;
2562
2563 ret = get_user_u16(instr_lo,
2564 env->active_tc.PC + 2);
2565 if (ret != 0) {
2566 goto error;
2567 }
2568 trap_instr = (trap_instr << 16) | instr_lo;
2569 code = ((trap_instr >> 6) & ((1 << 20) - 1));
2570 /* Unfortunately, microMIPS also suffers from
2571 the old assembler bug... */
2572 if (code >= (1 << 10)) {
2573 code >>= 10;
2574 }
2575 }
2576 } else {
2577 /* MIPS16e mode */
2578 ret = get_user_u16(trap_instr, env->active_tc.PC);
2579 if (ret != 0) {
2580 goto error;
2581 }
2582 code = (trap_instr >> 6) & 0x3f;
2583 }
2584 } else {
2585 ret = get_user_ual(trap_instr, env->active_tc.PC);
2586 if (ret != 0) {
2587 goto error;
2588 }
2589
2590 /* As described in the original Linux kernel code, the
2591 * below checks on 'code' are to work around an old
2592 * assembly bug.
2593 */
2594 code = ((trap_instr >> 6) & ((1 << 20) - 1));
2595 if (code >= (1 << 10)) {
2596 code >>= 10;
2597 }
2598 }
2599
2600 if (do_break(env, &info, code) != 0) {
2601 goto error;
2602 }
2603 }
2604 break;
2605 case EXCP_TRAP:
2606 {
2607 abi_ulong trap_instr;
2608 unsigned int code = 0;
2609
2610 if (env->hflags & MIPS_HFLAG_M16) {
2611 /* microMIPS mode */
2612 abi_ulong instr[2];
2613
2614 ret = get_user_u16(instr[0], env->active_tc.PC) ||
2615 get_user_u16(instr[1], env->active_tc.PC + 2);
2616
2617 trap_instr = (instr[0] << 16) | instr[1];
2618 } else {
2619 ret = get_user_ual(trap_instr, env->active_tc.PC);
2620 }
2621
2622 if (ret != 0) {
2623 goto error;
2624 }
2625
2626 /* The immediate versions don't provide a code. */
2627 if (!(trap_instr & 0xFC000000)) {
2628 if (env->hflags & MIPS_HFLAG_M16) {
2629 /* microMIPS mode */
2630 code = ((trap_instr >> 12) & ((1 << 4) - 1));
2631 } else {
2632 code = ((trap_instr >> 6) & ((1 << 10) - 1));
2633 }
2634 }
2635
2636 if (do_break(env, &info, code) != 0) {
2637 goto error;
2638 }
2639 }
2640 break;
2641 default:
2642 error:
2643 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
2644 trapnr);
2645 cpu_dump_state(cs, stderr, fprintf, 0);
2646 abort();
2647 }
2648 process_pending_signals(env);
2649 }
2650 }
2651 #endif
2652
2653 #ifdef TARGET_OPENRISC
2654
2655 void cpu_loop(CPUOpenRISCState *env)
2656 {
2657 CPUState *cs = CPU(openrisc_env_get_cpu(env));
2658 int trapnr, gdbsig;
2659
2660 for (;;) {
2661 trapnr = cpu_exec(env);
2662 gdbsig = 0;
2663
2664 switch (trapnr) {
2665 case EXCP_RESET:
2666 qemu_log("\nReset request, exit, pc is %#x\n", env->pc);
2667 exit(1);
2668 break;
2669 case EXCP_BUSERR:
2670 qemu_log("\nBus error, exit, pc is %#x\n", env->pc);
2671 gdbsig = SIGBUS;
2672 break;
2673 case EXCP_DPF:
2674 case EXCP_IPF:
2675 cpu_dump_state(cs, stderr, fprintf, 0);
2676 gdbsig = TARGET_SIGSEGV;
2677 break;
2678 case EXCP_TICK:
2679 qemu_log("\nTick time interrupt pc is %#x\n", env->pc);
2680 break;
2681 case EXCP_ALIGN:
2682 qemu_log("\nAlignment pc is %#x\n", env->pc);
2683 gdbsig = SIGBUS;
2684 break;
2685 case EXCP_ILLEGAL:
2686 qemu_log("\nIllegal instructionpc is %#x\n", env->pc);
2687 gdbsig = SIGILL;
2688 break;
2689 case EXCP_INT:
2690 qemu_log("\nExternal interruptpc is %#x\n", env->pc);
2691 break;
2692 case EXCP_DTLBMISS:
2693 case EXCP_ITLBMISS:
2694 qemu_log("\nTLB miss\n");
2695 break;
2696 case EXCP_RANGE:
2697 qemu_log("\nRange\n");
2698 gdbsig = SIGSEGV;
2699 break;
2700 case EXCP_SYSCALL:
2701 env->pc += 4; /* 0xc00; */
2702 env->gpr[11] = do_syscall(env,
2703 env->gpr[11], /* return value */
2704 env->gpr[3], /* r3 - r7 are params */
2705 env->gpr[4],
2706 env->gpr[5],
2707 env->gpr[6],
2708 env->gpr[7],
2709 env->gpr[8], 0, 0);
2710 break;
2711 case EXCP_FPE:
2712 qemu_log("\nFloating point error\n");
2713 break;
2714 case EXCP_TRAP:
2715 qemu_log("\nTrap\n");
2716 gdbsig = SIGTRAP;
2717 break;
2718 case EXCP_NR:
2719 qemu_log("\nNR\n");
2720 break;
2721 default:
2722 qemu_log("\nqemu: unhandled CPU exception %#x - aborting\n",
2723 trapnr);
2724 cpu_dump_state(cs, stderr, fprintf, 0);
2725 gdbsig = TARGET_SIGILL;
2726 break;
2727 }
2728 if (gdbsig) {
2729 gdb_handlesig(cs, gdbsig);
2730 if (gdbsig != TARGET_SIGTRAP) {
2731 exit(1);
2732 }
2733 }
2734
2735 process_pending_signals(env);
2736 }
2737 }
2738
2739 #endif /* TARGET_OPENRISC */
2740
2741 #ifdef TARGET_SH4
2742 void cpu_loop(CPUSH4State *env)
2743 {
2744 CPUState *cs = CPU(sh_env_get_cpu(env));
2745 int trapnr, ret;
2746 target_siginfo_t info;
2747
2748 while (1) {
2749 trapnr = cpu_sh4_exec (env);
2750
2751 switch (trapnr) {
2752 case 0x160:
2753 env->pc += 2;
2754 ret = do_syscall(env,
2755 env->gregs[3],
2756 env->gregs[4],
2757 env->gregs[5],
2758 env->gregs[6],
2759 env->gregs[7],
2760 env->gregs[0],
2761 env->gregs[1],
2762 0, 0);
2763 env->gregs[0] = ret;
2764 break;
2765 case EXCP_INTERRUPT:
2766 /* just indicate that signals should be handled asap */
2767 break;
2768 case EXCP_DEBUG:
2769 {
2770 int sig;
2771
2772 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
2773 if (sig)
2774 {
2775 info.si_signo = sig;
2776 info.si_errno = 0;
2777 info.si_code = TARGET_TRAP_BRKPT;
2778 queue_signal(env, info.si_signo, &info);
2779 }
2780 }
2781 break;
2782 case 0xa0:
2783 case 0xc0:
2784 info.si_signo = SIGSEGV;
2785 info.si_errno = 0;
2786 info.si_code = TARGET_SEGV_MAPERR;
2787 info._sifields._sigfault._addr = env->tea;
2788 queue_signal(env, info.si_signo, &info);
2789 break;
2790
2791 default:
2792 printf ("Unhandled trap: 0x%x\n", trapnr);
2793 cpu_dump_state(cs, stderr, fprintf, 0);
2794 exit (1);
2795 }
2796 process_pending_signals (env);
2797 }
2798 }
2799 #endif
2800
2801 #ifdef TARGET_CRIS
2802 void cpu_loop(CPUCRISState *env)
2803 {
2804 CPUState *cs = CPU(cris_env_get_cpu(env));
2805 int trapnr, ret;
2806 target_siginfo_t info;
2807
2808 while (1) {
2809 trapnr = cpu_cris_exec (env);
2810 switch (trapnr) {
2811 case 0xaa:
2812 {
2813 info.si_signo = SIGSEGV;
2814 info.si_errno = 0;
2815 /* XXX: check env->error_code */
2816 info.si_code = TARGET_SEGV_MAPERR;
2817 info._sifields._sigfault._addr = env->pregs[PR_EDA];
2818 queue_signal(env, info.si_signo, &info);
2819 }
2820 break;
2821 case EXCP_INTERRUPT:
2822 /* just indicate that signals should be handled asap */
2823 break;
2824 case EXCP_BREAK:
2825 ret = do_syscall(env,
2826 env->regs[9],
2827 env->regs[10],
2828 env->regs[11],
2829 env->regs[12],
2830 env->regs[13],
2831 env->pregs[7],
2832 env->pregs[11],
2833 0, 0);
2834 env->regs[10] = ret;
2835 break;
2836 case EXCP_DEBUG:
2837 {
2838 int sig;
2839
2840 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
2841 if (sig)
2842 {
2843 info.si_signo = sig;
2844 info.si_errno = 0;
2845 info.si_code = TARGET_TRAP_BRKPT;
2846 queue_signal(env, info.si_signo, &info);
2847 }
2848 }
2849 break;
2850 default:
2851 printf ("Unhandled trap: 0x%x\n", trapnr);
2852 cpu_dump_state(cs, stderr, fprintf, 0);
2853 exit (1);
2854 }
2855 process_pending_signals (env);
2856 }
2857 }
2858 #endif
2859
2860 #ifdef TARGET_MICROBLAZE
2861 void cpu_loop(CPUMBState *env)
2862 {
2863 CPUState *cs = CPU(mb_env_get_cpu(env));
2864 int trapnr, ret;
2865 target_siginfo_t info;
2866
2867 while (1) {
2868 trapnr = cpu_mb_exec (env);
2869 switch (trapnr) {
2870 case 0xaa:
2871 {
2872 info.si_signo = SIGSEGV;
2873 info.si_errno = 0;
2874 /* XXX: check env->error_code */
2875 info.si_code = TARGET_SEGV_MAPERR;
2876 info._sifields._sigfault._addr = 0;
2877 queue_signal(env, info.si_signo, &info);
2878 }
2879 break;
2880 case EXCP_INTERRUPT:
2881 /* just indicate that signals should be handled asap */
2882 break;
2883 case EXCP_BREAK:
2884 /* Return address is 4 bytes after the call. */
2885 env->regs[14] += 4;
2886 env->sregs[SR_PC] = env->regs[14];
2887 ret = do_syscall(env,
2888 env->regs[12],
2889 env->regs[5],
2890 env->regs[6],
2891 env->regs[7],
2892 env->regs[8],
2893 env->regs[9],
2894 env->regs[10],
2895 0, 0);
2896 env->regs[3] = ret;
2897 break;
2898 case EXCP_HW_EXCP:
2899 env->regs[17] = env->sregs[SR_PC] + 4;
2900 if (env->iflags & D_FLAG) {
2901 env->sregs[SR_ESR] |= 1 << 12;
2902 env->sregs[SR_PC] -= 4;
2903 /* FIXME: if branch was immed, replay the imm as well. */
2904 }
2905
2906 env->iflags &= ~(IMM_FLAG | D_FLAG);
2907
2908 switch (env->sregs[SR_ESR] & 31) {
2909 case ESR_EC_DIVZERO:
2910 info.si_signo = SIGFPE;
2911 info.si_errno = 0;
2912 info.si_code = TARGET_FPE_FLTDIV;
2913 info._sifields._sigfault._addr = 0;
2914 queue_signal(env, info.si_signo, &info);
2915 break;
2916 case ESR_EC_FPU:
2917 info.si_signo = SIGFPE;
2918 info.si_errno = 0;
2919 if (env->sregs[SR_FSR] & FSR_IO) {
2920 info.si_code = TARGET_FPE_FLTINV;
2921 }
2922 if (env->sregs[SR_FSR] & FSR_DZ) {
2923 info.si_code = TARGET_FPE_FLTDIV;
2924 }
2925 info._sifields._sigfault._addr = 0;
2926 queue_signal(env, info.si_signo, &info);
2927 break;
2928 default:
2929 printf ("Unhandled hw-exception: 0x%x\n",
2930 env->sregs[SR_ESR] & ESR_EC_MASK);
2931 cpu_dump_state(cs, stderr, fprintf, 0);
2932 exit (1);
2933 break;
2934 }
2935 break;
2936 case EXCP_DEBUG:
2937 {
2938 int sig;
2939
2940 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
2941 if (sig)
2942 {
2943 info.si_signo = sig;
2944 info.si_errno = 0;
2945 info.si_code = TARGET_TRAP_BRKPT;
2946 queue_signal(env, info.si_signo, &info);
2947 }
2948 }
2949 break;
2950 default:
2951 printf ("Unhandled trap: 0x%x\n", trapnr);
2952 cpu_dump_state(cs, stderr, fprintf, 0);
2953 exit (1);
2954 }
2955 process_pending_signals (env);
2956 }
2957 }
2958 #endif
2959
2960 #ifdef TARGET_M68K
2961
2962 void cpu_loop(CPUM68KState *env)
2963 {
2964 CPUState *cs = CPU(m68k_env_get_cpu(env));
2965 int trapnr;
2966 unsigned int n;
2967 target_siginfo_t info;
2968 TaskState *ts = cs->opaque;
2969
2970 for(;;) {
2971 trapnr = cpu_m68k_exec(env);
2972 switch(trapnr) {
2973 case EXCP_ILLEGAL:
2974 {
2975 if (ts->sim_syscalls) {
2976 uint16_t nr;
2977 nr = lduw(env->pc + 2);
2978 env->pc += 4;
2979 do_m68k_simcall(env, nr);
2980 } else {
2981 goto do_sigill;
2982 }
2983 }
2984 break;
2985 case EXCP_HALT_INSN:
2986 /* Semihosing syscall. */
2987 env->pc += 4;
2988 do_m68k_semihosting(env, env->dregs[0]);
2989 break;
2990 case EXCP_LINEA:
2991 case EXCP_LINEF:
2992 case EXCP_UNSUPPORTED:
2993 do_sigill:
2994 info.si_signo = SIGILL;
2995 info.si_errno = 0;
2996 info.si_code = TARGET_ILL_ILLOPN;
2997 info._sifields._sigfault._addr = env->pc;
2998 queue_signal(env, info.si_signo, &info);
2999 break;
3000 case EXCP_TRAP0:
3001 {
3002 ts->sim_syscalls = 0;
3003 n = env->dregs[0];
3004 env->pc += 2;
3005 env->dregs[0] = do_syscall(env,
3006 n,
3007 env->dregs[1],
3008 env->dregs[2],
3009 env->dregs[3],
3010 env->dregs[4],
3011 env->dregs[5],
3012 env->aregs[0],
3013 0, 0);
3014 }
3015 break;
3016 case EXCP_INTERRUPT:
3017 /* just indicate that signals should be handled asap */
3018 break;
3019 case EXCP_ACCESS:
3020 {
3021 info.si_signo = SIGSEGV;
3022 info.si_errno = 0;
3023 /* XXX: check env->error_code */
3024 info.si_code = TARGET_SEGV_MAPERR;
3025 info._sifields._sigfault._addr = env->mmu.ar;
3026 queue_signal(env, info.si_signo, &info);
3027 }
3028 break;
3029 case EXCP_DEBUG:
3030 {
3031 int sig;
3032
3033 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
3034 if (sig)
3035 {
3036 info.si_signo = sig;
3037 info.si_errno = 0;
3038 info.si_code = TARGET_TRAP_BRKPT;
3039 queue_signal(env, info.si_signo, &info);
3040 }
3041 }
3042 break;
3043 default:
3044 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
3045 trapnr);
3046 cpu_dump_state(cs, stderr, fprintf, 0);
3047 abort();
3048 }
3049 process_pending_signals(env);
3050 }
3051 }
3052 #endif /* TARGET_M68K */
3053
3054 #ifdef TARGET_ALPHA
3055 static void do_store_exclusive(CPUAlphaState *env, int reg, int quad)
3056 {
3057 target_ulong addr, val, tmp;
3058 target_siginfo_t info;
3059 int ret = 0;
3060
3061 addr = env->lock_addr;
3062 tmp = env->lock_st_addr;
3063 env->lock_addr = -1;
3064 env->lock_st_addr = 0;
3065
3066 start_exclusive();
3067 mmap_lock();
3068
3069 if (addr == tmp) {
3070 if (quad ? get_user_s64(val, addr) : get_user_s32(val, addr)) {
3071 goto do_sigsegv;
3072 }
3073
3074 if (val == env->lock_value) {
3075 tmp = env->ir[reg];
3076 if (quad ? put_user_u64(tmp, addr) : put_user_u32(tmp, addr)) {
3077 goto do_sigsegv;
3078 }
3079 ret = 1;
3080 }
3081 }
3082 env->ir[reg] = ret;
3083 env->pc += 4;
3084
3085 mmap_unlock();
3086 end_exclusive();
3087 return;
3088
3089 do_sigsegv:
3090 mmap_unlock();
3091 end_exclusive();
3092
3093 info.si_signo = TARGET_SIGSEGV;
3094 info.si_errno = 0;
3095 info.si_code = TARGET_SEGV_MAPERR;
3096 info._sifields._sigfault._addr = addr;
3097 queue_signal(env, TARGET_SIGSEGV, &info);
3098 }
3099
3100 void cpu_loop(CPUAlphaState *env)
3101 {
3102 CPUState *cs = CPU(alpha_env_get_cpu(env));
3103 int trapnr;
3104 target_siginfo_t info;
3105 abi_long sysret;
3106
3107 while (1) {
3108 trapnr = cpu_alpha_exec (env);
3109
3110 /* All of the traps imply a transition through PALcode, which
3111 implies an REI instruction has been executed. Which means
3112 that the intr_flag should be cleared. */
3113 env->intr_flag = 0;
3114
3115 switch (trapnr) {
3116 case EXCP_RESET:
3117 fprintf(stderr, "Reset requested. Exit\n");
3118 exit(1);
3119 break;
3120 case EXCP_MCHK:
3121 fprintf(stderr, "Machine check exception. Exit\n");
3122 exit(1);
3123 break;
3124 case EXCP_SMP_INTERRUPT:
3125 case EXCP_CLK_INTERRUPT:
3126 case EXCP_DEV_INTERRUPT:
3127 fprintf(stderr, "External interrupt. Exit\n");
3128 exit(1);
3129 break;
3130 case EXCP_MMFAULT:
3131 env->lock_addr = -1;
3132 info.si_signo = TARGET_SIGSEGV;
3133 info.si_errno = 0;
3134 info.si_code = (page_get_flags(env->trap_arg0) & PAGE_VALID
3135 ? TARGET_SEGV_ACCERR : TARGET_SEGV_MAPERR);
3136 info._sifields._sigfault._addr = env->trap_arg0;
3137 queue_signal(env, info.si_signo, &info);
3138 break;
3139 case EXCP_UNALIGN:
3140 env->lock_addr = -1;
3141 info.si_signo = TARGET_SIGBUS;
3142 info.si_errno = 0;
3143 info.si_code = TARGET_BUS_ADRALN;
3144 info._sifields._sigfault._addr = env->trap_arg0;
3145 queue_signal(env, info.si_signo, &info);
3146 break;
3147 case EXCP_OPCDEC:
3148 do_sigill:
3149 env->lock_addr = -1;
3150 info.si_signo = TARGET_SIGILL;
3151 info.si_errno = 0;
3152 info.si_code = TARGET_ILL_ILLOPC;
3153 info._sifields._sigfault._addr = env->pc;
3154 queue_signal(env, info.si_signo, &info);
3155 break;
3156 case EXCP_ARITH:
3157 env->lock_addr = -1;
3158 info.si_signo = TARGET_SIGFPE;
3159 info.si_errno = 0;
3160 info.si_code = TARGET_FPE_FLTINV;
3161 info._sifields._sigfault._addr = env->pc;
3162 queue_signal(env, info.si_signo, &info);
3163 break;
3164 case EXCP_FEN:
3165 /* No-op. Linux simply re-enables the FPU. */
3166 break;
3167 case EXCP_CALL_PAL:
3168 env->lock_addr = -1;
3169 switch (env->error_code) {
3170 case 0x80:
3171 /* BPT */
3172 info.si_signo = TARGET_SIGTRAP;
3173 info.si_errno = 0;
3174 info.si_code = TARGET_TRAP_BRKPT;
3175 info._sifields._sigfault._addr = env->pc;
3176 queue_signal(env, info.si_signo, &info);
3177 break;
3178 case 0x81:
3179 /* BUGCHK */
3180 info.si_signo = TARGET_SIGTRAP;
3181 info.si_errno = 0;
3182 info.si_code = 0;
3183 info._sifields._sigfault._addr = env->pc;
3184 queue_signal(env, info.si_signo, &info);
3185 break;
3186 case 0x83:
3187 /* CALLSYS */
3188 trapnr = env->ir[IR_V0];
3189 sysret = do_syscall(env, trapnr,
3190 env->ir[IR_A0], env->ir[IR_A1],
3191 env->ir[IR_A2], env->ir[IR_A3],
3192 env->ir[IR_A4], env->ir[IR_A5],
3193 0, 0);
3194 if (trapnr == TARGET_NR_sigreturn
3195 || trapnr == TARGET_NR_rt_sigreturn) {
3196 break;
3197 }
3198 /* Syscall writes 0 to V0 to bypass error check, similar
3199 to how this is handled internal to Linux kernel.
3200 (Ab)use trapnr temporarily as boolean indicating error. */
3201 trapnr = (env->ir[IR_V0] != 0 && sysret < 0);
3202 env->ir[IR_V0] = (trapnr ? -sysret : sysret);
3203 env->ir[IR_A3] = trapnr;
3204 break;
3205 case 0x86:
3206 /* IMB */
3207 /* ??? We can probably elide the code using page_unprotect
3208 that is checking for self-modifying code. Instead we
3209 could simply call tb_flush here. Until we work out the
3210 changes required to turn off the extra write protection,
3211 this can be a no-op. */
3212 break;
3213 case 0x9E:
3214 /* RDUNIQUE */
3215 /* Handled in the translator for usermode. */
3216 abort();
3217 case 0x9F:
3218 /* WRUNIQUE */
3219 /* Handled in the translator for usermode. */
3220 abort();
3221 case 0xAA:
3222 /* GENTRAP */
3223 info.si_signo = TARGET_SIGFPE;
3224 switch (env->ir[IR_A0]) {
3225 case TARGET_GEN_INTOVF:
3226 info.si_code = TARGET_FPE_INTOVF;
3227 break;
3228 case TARGET_GEN_INTDIV:
3229 info.si_code = TARGET_FPE_INTDIV;
3230 break;
3231 case TARGET_GEN_FLTOVF:
3232 info.si_code = TARGET_FPE_FLTOVF;
3233 break;
3234 case TARGET_GEN_FLTUND:
3235 info.si_code = TARGET_FPE_FLTUND;
3236 break;
3237 case TARGET_GEN_FLTINV:
3238 info.si_code = TARGET_FPE_FLTINV;
3239 break;
3240 case TARGET_GEN_FLTINE:
3241 info.si_code = TARGET_FPE_FLTRES;
3242 break;
3243 case TARGET_GEN_ROPRAND:
3244 info.si_code = 0;
3245 break;
3246 default:
3247 info.si_signo = TARGET_SIGTRAP;
3248 info.si_code = 0;
3249 break;
3250 }
3251 info.si_errno = 0;
3252 info._sifields._sigfault._addr = env->pc;
3253 queue_signal(env, info.si_signo, &info);
3254 break;
3255 default:
3256 goto do_sigill;
3257 }
3258 break;
3259 case EXCP_DEBUG:
3260 info.si_signo = gdb_handlesig(cs, TARGET_SIGTRAP);
3261 if (info.si_signo) {
3262 env->lock_addr = -1;
3263 info.si_errno = 0;
3264 info.si_code = TARGET_TRAP_BRKPT;
3265 queue_signal(env, info.si_signo, &info);
3266 }
3267 break;
3268 case EXCP_STL_C:
3269 case EXCP_STQ_C:
3270 do_store_exclusive(env, env->error_code, trapnr - EXCP_STL_C);
3271 break;
3272 case EXCP_INTERRUPT:
3273 /* Just indicate that signals should be handled asap. */
3274 break;
3275 default:
3276 printf ("Unhandled trap: 0x%x\n", trapnr);
3277 cpu_dump_state(cs, stderr, fprintf, 0);
3278 exit (1);
3279 }
3280 process_pending_signals (env);
3281 }
3282 }
3283 #endif /* TARGET_ALPHA */
3284
3285 #ifdef TARGET_S390X
3286 void cpu_loop(CPUS390XState *env)
3287 {
3288 CPUState *cs = CPU(s390_env_get_cpu(env));
3289 int trapnr, n, sig;
3290 target_siginfo_t info;
3291 target_ulong addr;
3292
3293 while (1) {
3294 trapnr = cpu_s390x_exec(env);
3295 switch (trapnr) {
3296 case EXCP_INTERRUPT:
3297 /* Just indicate that signals should be handled asap. */
3298 break;
3299
3300 case EXCP_SVC:
3301 n = env->int_svc_code;
3302 if (!n) {
3303 /* syscalls > 255 */
3304 n = env->regs[1];
3305 }
3306 env->psw.addr += env->int_svc_ilen;
3307 env->regs[2] = do_syscall(env, n, env->regs[2], env->regs[3],
3308 env->regs[4], env->regs[5],
3309 env->regs[6], env->regs[7], 0, 0);
3310 break;
3311
3312 case EXCP_DEBUG:
3313 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
3314 if (sig) {
3315 n = TARGET_TRAP_BRKPT;
3316 goto do_signal_pc;
3317 }
3318 break;
3319 case EXCP_PGM:
3320 n = env->int_pgm_code;
3321 switch (n) {
3322 case PGM_OPERATION:
3323 case PGM_PRIVILEGED:
3324 sig = SIGILL;
3325 n = TARGET_ILL_ILLOPC;
3326 goto do_signal_pc;
3327 case PGM_PROTECTION:
3328 case PGM_ADDRESSING:
3329 sig = SIGSEGV;
3330 /* XXX: check env->error_code */
3331 n = TARGET_SEGV_MAPERR;
3332 addr = env->__excp_addr;
3333 goto do_signal;
3334 case PGM_EXECUTE:
3335 case PGM_SPECIFICATION:
3336 case PGM_SPECIAL_OP:
3337 case PGM_OPERAND:
3338 do_sigill_opn:
3339 sig = SIGILL;
3340 n = TARGET_ILL_ILLOPN;
3341 goto do_signal_pc;
3342
3343 case PGM_FIXPT_OVERFLOW:
3344 sig = SIGFPE;
3345 n = TARGET_FPE_INTOVF;
3346 goto do_signal_pc;
3347 case PGM_FIXPT_DIVIDE:
3348 sig = SIGFPE;
3349 n = TARGET_FPE_INTDIV;
3350 goto do_signal_pc;
3351
3352 case PGM_DATA:
3353 n = (env->fpc >> 8) & 0xff;
3354 if (n == 0xff) {
3355 /* compare-and-trap */
3356 goto do_sigill_opn;
3357 } else {
3358 /* An IEEE exception, simulated or otherwise. */
3359 if (n & 0x80) {
3360 n = TARGET_FPE_FLTINV;
3361 } else if (n & 0x40) {
3362 n = TARGET_FPE_FLTDIV;
3363 } else if (n & 0x20) {
3364 n = TARGET_FPE_FLTOVF;
3365 } else if (n & 0x10) {
3366 n = TARGET_FPE_FLTUND;
3367 } else if (n & 0x08) {
3368 n = TARGET_FPE_FLTRES;
3369 } else {
3370 /* ??? Quantum exception; BFP, DFP error. */
3371 goto do_sigill_opn;
3372 }
3373 sig = SIGFPE;
3374 goto do_signal_pc;
3375 }
3376
3377 default:
3378 fprintf(stderr, "Unhandled program exception: %#x\n", n);
3379 cpu_dump_state(cs, stderr, fprintf, 0);
3380 exit(1);
3381 }
3382 break;
3383
3384 do_signal_pc:
3385 addr = env->psw.addr;
3386 do_signal:
3387 info.si_signo = sig;
3388 info.si_errno = 0;
3389 info.si_code = n;
3390 info._sifields._sigfault._addr = addr;
3391 queue_signal(env, info.si_signo, &info);
3392 break;
3393
3394 default:
3395 fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr);
3396 cpu_dump_state(cs, stderr, fprintf, 0);
3397 exit(1);
3398 }
3399 process_pending_signals (env);
3400 }
3401 }
3402
3403 #endif /* TARGET_S390X */
3404
3405 THREAD CPUState *thread_cpu;
3406
3407 void task_settid(TaskState *ts)
3408 {
3409 if (ts->ts_tid == 0) {
3410 ts->ts_tid = (pid_t)syscall(SYS_gettid);
3411 }
3412 }
3413
3414 void stop_all_tasks(void)
3415 {
3416 /*
3417 * We trust that when using NPTL, start_exclusive()
3418 * handles thread stopping correctly.
3419 */
3420 start_exclusive();
3421 }
3422
3423 /* Assumes contents are already zeroed. */
3424 void init_task_state(TaskState *ts)
3425 {
3426 int i;
3427
3428 ts->used = 1;
3429 ts->first_free = ts->sigqueue_table;
3430 for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) {
3431 ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1];
3432 }
3433 ts->sigqueue_table[i].next = NULL;
3434 }
3435
3436 CPUArchState *cpu_copy(CPUArchState *env)
3437 {
3438 CPUState *cpu = ENV_GET_CPU(env);
3439 CPUArchState *new_env = cpu_init(cpu_model);
3440 CPUState *new_cpu = ENV_GET_CPU(new_env);
3441 #if defined(TARGET_HAS_ICE)
3442 CPUBreakpoint *bp;
3443 CPUWatchpoint *wp;
3444 #endif
3445
3446 /* Reset non arch specific state */
3447 cpu_reset(new_cpu);
3448
3449 memcpy(new_env, env, sizeof(CPUArchState));
3450
3451 /* Clone all break/watchpoints.
3452 Note: Once we support ptrace with hw-debug register access, make sure
3453 BP_CPU break/watchpoints are handled correctly on clone. */
3454 QTAILQ_INIT(&cpu->breakpoints);
3455 QTAILQ_INIT(&cpu->watchpoints);
3456 #if defined(TARGET_HAS_ICE)
3457 QTAILQ_FOREACH(bp, &cpu->breakpoints, entry) {
3458 cpu_breakpoint_insert(new_cpu, bp->pc, bp->flags, NULL);
3459 }
3460 QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) {
3461 cpu_watchpoint_insert(new_cpu, wp->vaddr, (~wp->len_mask) + 1,
3462 wp->flags, NULL);
3463 }
3464 #endif
3465
3466 return new_env;
3467 }
3468
3469 static void handle_arg_help(const char *arg)
3470 {
3471 usage();
3472 }
3473
3474 static void handle_arg_log(const char *arg)
3475 {
3476 int mask;
3477
3478 mask = qemu_str_to_log_mask(arg);
3479 if (!mask) {
3480 qemu_print_log_usage(stdout);
3481 exit(1);
3482 }
3483 qemu_set_log(mask);
3484 }
3485
3486 static void handle_arg_log_filename(const char *arg)
3487 {
3488 qemu_set_log_filename(arg);
3489 }
3490
3491 static void handle_arg_set_env(const char *arg)
3492 {
3493 char *r, *p, *token;
3494 r = p = strdup(arg);
3495 while ((token = strsep(&p, ",")) != NULL) {
3496 if (envlist_setenv(envlist, token) != 0) {
3497 usage();
3498 }
3499 }
3500 free(r);
3501 }
3502
3503 static void handle_arg_unset_env(const char *arg)
3504 {
3505 char *r, *p, *token;
3506 r = p = strdup(arg);
3507 while ((token = strsep(&p, ",")) != NULL) {
3508 if (envlist_unsetenv(envlist, token) != 0) {
3509 usage();
3510 }
3511 }
3512 free(r);
3513 }
3514
3515 static void handle_arg_argv0(const char *arg)
3516 {
3517 argv0 = strdup(arg);
3518 }
3519
3520 static void handle_arg_stack_size(const char *arg)
3521 {
3522 char *p;
3523 guest_stack_size = strtoul(arg, &p, 0);
3524 if (guest_stack_size == 0) {
3525 usage();
3526 }
3527
3528 if (*p == 'M') {
3529 guest_stack_size *= 1024 * 1024;
3530 } else if (*p == 'k' || *p == 'K') {
3531 guest_stack_size *= 1024;
3532 }
3533 }
3534
3535 static void handle_arg_ld_prefix(const char *arg)
3536 {
3537 interp_prefix = strdup(arg);
3538 }
3539
3540 static void handle_arg_pagesize(const char *arg)
3541 {
3542 qemu_host_page_size = atoi(arg);
3543 if (qemu_host_page_size == 0 ||
3544 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
3545 fprintf(stderr, "page size must be a power of two\n");
3546 exit(1);
3547 }
3548 }
3549
3550 static void handle_arg_gdb(const char *arg)
3551 {
3552 gdbstub_port = atoi(arg);
3553 }
3554
3555 static void handle_arg_uname(const char *arg)
3556 {
3557 qemu_uname_release = strdup(arg);
3558 }
3559
3560 static void handle_arg_cpu(const char *arg)
3561 {
3562 cpu_model = strdup(arg);
3563 if (cpu_model == NULL || is_help_option(cpu_model)) {
3564 /* XXX: implement xxx_cpu_list for targets that still miss it */
3565 #if defined(cpu_list)
3566 cpu_list(stdout, &fprintf);
3567 #endif
3568 exit(1);
3569 }
3570 }
3571
3572 #if defined(CONFIG_USE_GUEST_BASE)
3573 static void handle_arg_guest_base(const char *arg)
3574 {
3575 guest_base = strtol(arg, NULL, 0);
3576 have_guest_base = 1;
3577 }
3578
3579 static void handle_arg_reserved_va(const char *arg)
3580 {
3581 char *p;
3582 int shift = 0;
3583 reserved_va = strtoul(arg, &p, 0);
3584 switch (*p) {
3585 case 'k':
3586 case 'K':
3587 shift = 10;
3588 break;
3589 case 'M':
3590 shift = 20;
3591 break;
3592 case 'G':
3593 shift = 30;
3594 break;
3595 }
3596 if (shift) {
3597 unsigned long unshifted = reserved_va;
3598 p++;
3599 reserved_va <<= shift;
3600 if (((reserved_va >> shift) != unshifted)
3601 #if HOST_LONG_BITS > TARGET_VIRT_ADDR_SPACE_BITS
3602 || (reserved_va > (1ul << TARGET_VIRT_ADDR_SPACE_BITS))
3603 #endif
3604 ) {
3605 fprintf(stderr, "Reserved virtual address too big\n");
3606 exit(1);
3607 }
3608 }
3609 if (*p) {
3610 fprintf(stderr, "Unrecognised -R size suffix '%s'\n", p);
3611 exit(1);
3612 }
3613 }
3614 #endif
3615
3616 static void handle_arg_singlestep(const char *arg)
3617 {
3618 singlestep = 1;
3619 }
3620
3621 static void handle_arg_strace(const char *arg)
3622 {
3623 do_strace = 1;
3624 }
3625
3626 static void handle_arg_version(const char *arg)
3627 {
3628 printf("qemu-" TARGET_NAME " version " QEMU_VERSION QEMU_PKGVERSION
3629 ", Copyright (c) 2003-2008 Fabrice Bellard\n");
3630 exit(0);
3631 }
3632
3633 struct qemu_argument {
3634 const char *argv;
3635 const char *env;
3636 bool has_arg;
3637 void (*handle_opt)(const char *arg);
3638 const char *example;
3639 const char *help;
3640 };
3641
3642 static const struct qemu_argument arg_table[] = {
3643 {"h", "", false, handle_arg_help,
3644 "", "print this help"},
3645 {"g", "QEMU_GDB", true, handle_arg_gdb,
3646 "port", "wait gdb connection to 'port'"},
3647 {"L", "QEMU_LD_PREFIX", true, handle_arg_ld_prefix,
3648 "path", "set the elf interpreter prefix to 'path'"},
3649 {"s", "QEMU_STACK_SIZE", true, handle_arg_stack_size,
3650 "size", "set the stack size to 'size' bytes"},
3651 {"cpu", "QEMU_CPU", true, handle_arg_cpu,
3652 "model", "select CPU (-cpu help for list)"},
3653 {"E", "QEMU_SET_ENV", true, handle_arg_set_env,
3654 "var=value", "sets targets environment variable (see below)"},
3655 {"U", "QEMU_UNSET_ENV", true, handle_arg_unset_env,
3656 "var", "unsets targets environment variable (see below)"},
3657 {"0", "QEMU_ARGV0", true, handle_arg_argv0,
3658 "argv0", "forces target process argv[0] to be 'argv0'"},
3659 {"r", "QEMU_UNAME", true, handle_arg_uname,
3660 "uname", "set qemu uname release string to 'uname'"},
3661 #if defined(CONFIG_USE_GUEST_BASE)
3662 {"B", "QEMU_GUEST_BASE", true, handle_arg_guest_base,
3663 "address", "set guest_base address to 'address'"},
3664 {"R", "QEMU_RESERVED_VA", true, handle_arg_reserved_va,
3665 "size", "reserve 'size' bytes for guest virtual address space"},
3666 #endif
3667 {"d", "QEMU_LOG", true, handle_arg_log,
3668 "item[,...]", "enable logging of specified items "
3669 "(use '-d help' for a list of items)"},
3670 {"D", "QEMU_LOG_FILENAME", true, handle_arg_log_filename,
3671 "logfile", "write logs to 'logfile' (default stderr)"},
3672 {"p", "QEMU_PAGESIZE", true, handle_arg_pagesize,
3673 "pagesize", "set the host page size to 'pagesize'"},
3674 {"singlestep", "QEMU_SINGLESTEP", false, handle_arg_singlestep,
3675 "", "run in singlestep mode"},
3676 {"strace", "QEMU_STRACE", false, handle_arg_strace,
3677 "", "log system calls"},
3678 {"version", "QEMU_VERSION", false, handle_arg_version,
3679 "", "display version information and exit"},
3680 {NULL, NULL, false, NULL, NULL, NULL}
3681 };
3682
3683 static void usage(void)
3684 {
3685 const struct qemu_argument *arginfo;
3686 int maxarglen;
3687 int maxenvlen;
3688
3689 printf("usage: qemu-" TARGET_NAME " [options] program [arguments...]\n"
3690 "Linux CPU emulator (compiled for " TARGET_NAME " emulation)\n"
3691 "\n"
3692 "Options and associated environment variables:\n"
3693 "\n");
3694
3695 /* Calculate column widths. We must always have at least enough space
3696 * for the column header.
3697 */
3698 maxarglen = strlen("Argument");
3699 maxenvlen = strlen("Env-variable");
3700
3701 for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
3702 int arglen = strlen(arginfo->argv);
3703 if (arginfo->has_arg) {
3704 arglen += strlen(arginfo->example) + 1;
3705 }
3706 if (strlen(arginfo->env) > maxenvlen) {
3707 maxenvlen = strlen(arginfo->env);
3708 }
3709 if (arglen > maxarglen) {
3710 maxarglen = arglen;
3711 }
3712 }
3713
3714 printf("%-*s %-*s Description\n", maxarglen+1, "Argument",
3715 maxenvlen, "Env-variable");
3716
3717 for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
3718 if (arginfo->has_arg) {
3719 printf("-%s %-*s %-*s %s\n", arginfo->argv,
3720 (int)(maxarglen - strlen(arginfo->argv) - 1),
3721 arginfo->example, maxenvlen, arginfo->env, arginfo->help);
3722 } else {
3723 printf("-%-*s %-*s %s\n", maxarglen, arginfo->argv,
3724 maxenvlen, arginfo->env,
3725 arginfo->help);
3726 }
3727 }
3728
3729 printf("\n"
3730 "Defaults:\n"
3731 "QEMU_LD_PREFIX = %s\n"
3732 "QEMU_STACK_SIZE = %ld byte\n",
3733 interp_prefix,
3734 guest_stack_size);
3735
3736 printf("\n"
3737 "You can use -E and -U options or the QEMU_SET_ENV and\n"
3738 "QEMU_UNSET_ENV environment variables to set and unset\n"
3739 "environment variables for the target process.\n"
3740 "It is possible to provide several variables by separating them\n"
3741 "by commas in getsubopt(3) style. Additionally it is possible to\n"
3742 "provide the -E and -U options multiple times.\n"
3743 "The following lines are equivalent:\n"
3744 " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
3745 " -E var1=val2,var2=val2 -U LD_PRELOAD,LD_DEBUG\n"
3746 " QEMU_SET_ENV=var1=val2,var2=val2 QEMU_UNSET_ENV=LD_PRELOAD,LD_DEBUG\n"
3747 "Note that if you provide several changes to a single variable\n"
3748 "the last change will stay in effect.\n");
3749
3750 exit(1);
3751 }
3752
3753 static int parse_args(int argc, char **argv)
3754 {
3755 const char *r;
3756 int optind;
3757 const struct qemu_argument *arginfo;
3758
3759 for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
3760 if (arginfo->env == NULL) {
3761 continue;
3762 }
3763
3764 r = getenv(arginfo->env);
3765 if (r != NULL) {
3766 arginfo->handle_opt(r);
3767 }
3768 }
3769
3770 optind = 1;
3771 for (;;) {
3772 if (optind >= argc) {
3773 break;
3774 }
3775 r = argv[optind];
3776 if (r[0] != '-') {
3777 break;
3778 }
3779 optind++;
3780 r++;
3781 if (!strcmp(r, "-")) {
3782 break;
3783 }
3784
3785 for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
3786 if (!strcmp(r, arginfo->argv)) {
3787 if (arginfo->has_arg) {
3788 if (optind >= argc) {
3789 usage();
3790 }
3791 arginfo->handle_opt(argv[optind]);
3792 optind++;
3793 } else {
3794 arginfo->handle_opt(NULL);
3795 }
3796 break;
3797 }
3798 }
3799
3800 /* no option matched the current argv */
3801 if (arginfo->handle_opt == NULL) {
3802 usage();
3803 }
3804 }
3805
3806 if (optind >= argc) {
3807 usage();
3808 }
3809
3810 filename = argv[optind];
3811 exec_path = argv[optind];
3812
3813 return optind;
3814 }
3815
3816 int main(int argc, char **argv, char **envp)
3817 {
3818 struct target_pt_regs regs1, *regs = &regs1;
3819 struct image_info info1, *info = &info1;
3820 struct linux_binprm bprm;
3821 TaskState *ts;
3822 CPUArchState *env;
3823 CPUState *cpu;
3824 int optind;
3825 char **target_environ, **wrk;
3826 char **target_argv;
3827 int target_argc;
3828 int i;
3829 int ret;
3830 int execfd;
3831
3832 module_call_init(MODULE_INIT_QOM);
3833
3834 qemu_init_auxval(envp);
3835 qemu_cache_utils_init();
3836
3837 if ((envlist = envlist_create()) == NULL) {
3838 (void) fprintf(stderr, "Unable to allocate envlist\n");
3839 exit(1);
3840 }
3841
3842 /* add current environment into the list */
3843 for (wrk = environ; *wrk != NULL; wrk++) {
3844 (void) envlist_setenv(envlist, *wrk);
3845 }
3846
3847 /* Read the stack limit from the kernel. If it's "unlimited",
3848 then we can do little else besides use the default. */
3849 {
3850 struct rlimit lim;
3851 if (getrlimit(RLIMIT_STACK, &lim) == 0
3852 && lim.rlim_cur != RLIM_INFINITY
3853 && lim.rlim_cur == (target_long)lim.rlim_cur) {
3854 guest_stack_size = lim.rlim_cur;
3855 }
3856 }
3857
3858 cpu_model = NULL;
3859 #if defined(cpudef_setup)
3860 cpudef_setup(); /* parse cpu definitions in target config file (TBD) */
3861 #endif
3862
3863 optind = parse_args(argc, argv);
3864
3865 /* Zero out regs */
3866 memset(regs, 0, sizeof(struct target_pt_regs));
3867
3868 /* Zero out image_info */
3869 memset(info, 0, sizeof(struct image_info));
3870
3871 memset(&bprm, 0, sizeof (bprm));
3872
3873 /* Scan interp_prefix dir for replacement files. */
3874 init_paths(interp_prefix);
3875
3876 init_qemu_uname_release();
3877
3878 if (cpu_model == NULL) {
3879 #if defined(TARGET_I386)
3880 #ifdef TARGET_X86_64
3881 cpu_model = "qemu64";
3882 #else
3883 cpu_model = "qemu32";
3884 #endif
3885 #elif defined(TARGET_ARM)
3886 cpu_model = "any";
3887 #elif defined(TARGET_UNICORE32)
3888 cpu_model = "any";
3889 #elif defined(TARGET_M68K)
3890 cpu_model = "any";
3891 #elif defined(TARGET_SPARC)
3892 #ifdef TARGET_SPARC64
3893 cpu_model = "TI UltraSparc II";
3894 #else
3895 cpu_model = "Fujitsu MB86904";
3896 #endif
3897 #elif defined(TARGET_MIPS)
3898 #if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64)
3899 cpu_model = "20Kc";
3900 #else
3901 cpu_model = "24Kf";
3902 #endif
3903 #elif defined TARGET_OPENRISC
3904 cpu_model = "or1200";
3905 #elif defined(TARGET_PPC)
3906 #ifdef TARGET_PPC64
3907 cpu_model = "970fx";
3908 #else
3909 cpu_model = "750";
3910 #endif
3911 #else
3912 cpu_model = "any";
3913 #endif
3914 }
3915 tcg_exec_init(0);
3916 cpu_exec_init_all();
3917 /* NOTE: we need to init the CPU at this stage to get
3918 qemu_host_page_size */
3919 env = cpu_init(cpu_model);
3920 if (!env) {
3921 fprintf(stderr, "Unable to find CPU definition\n");
3922 exit(1);
3923 }
3924 cpu = ENV_GET_CPU(env);
3925 cpu_reset(cpu);
3926
3927 thread_cpu = cpu;
3928
3929 if (getenv("QEMU_STRACE")) {
3930 do_strace = 1;
3931 }
3932
3933 target_environ = envlist_to_environ(envlist, NULL);
3934 envlist_free(envlist);
3935
3936 #if defined(CONFIG_USE_GUEST_BASE)
3937 /*
3938 * Now that page sizes are configured in cpu_init() we can do
3939 * proper page alignment for guest_base.
3940 */
3941 guest_base = HOST_PAGE_ALIGN(guest_base);
3942
3943 if (reserved_va || have_guest_base) {
3944 guest_base = init_guest_space(guest_base, reserved_va, 0,
3945 have_guest_base);
3946 if (guest_base == (unsigned long)-1) {
3947 fprintf(stderr, "Unable to reserve 0x%lx bytes of virtual address "
3948 "space for use as guest address space (check your virtual "
3949 "memory ulimit setting or reserve less using -R option)\n",
3950 reserved_va);
3951 exit(1);
3952 }
3953
3954 if (reserved_va) {
3955 mmap_next_start = reserved_va;
3956 }
3957 }
3958 #endif /* CONFIG_USE_GUEST_BASE */
3959
3960 /*
3961 * Read in mmap_min_addr kernel parameter. This value is used
3962 * When loading the ELF image to determine whether guest_base
3963 * is needed. It is also used in mmap_find_vma.
3964 */
3965 {
3966 FILE *fp;
3967
3968 if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) {
3969 unsigned long tmp;
3970 if (fscanf(fp, "%lu", &tmp) == 1) {
3971 mmap_min_addr = tmp;
3972 qemu_log("host mmap_min_addr=0x%lx\n", mmap_min_addr);
3973 }
3974 fclose(fp);
3975 }
3976 }
3977
3978 /*
3979 * Prepare copy of argv vector for target.
3980 */
3981 target_argc = argc - optind;
3982 target_argv = calloc(target_argc + 1, sizeof (char *));
3983 if (target_argv == NULL) {
3984 (void) fprintf(stderr, "Unable to allocate memory for target_argv\n");
3985 exit(1);
3986 }
3987
3988 /*
3989 * If argv0 is specified (using '-0' switch) we replace
3990 * argv[0] pointer with the given one.
3991 */
3992 i = 0;
3993 if (argv0 != NULL) {
3994 target_argv[i++] = strdup(argv0);
3995 }
3996 for (; i < target_argc; i++) {
3997 target_argv[i] = strdup(argv[optind + i]);
3998 }
3999 target_argv[target_argc] = NULL;
4000
4001 ts = g_malloc0 (sizeof(TaskState));
4002 init_task_state(ts);
4003 /* build Task State */
4004 ts->info = info;
4005 ts->bprm = &bprm;
4006 cpu->opaque = ts;
4007 task_settid(ts);
4008
4009 execfd = qemu_getauxval(AT_EXECFD);
4010 if (execfd == 0) {
4011 execfd = open(filename, O_RDONLY);
4012 if (execfd < 0) {
4013 printf("Error while loading %s: %s\n", filename, strerror(errno));
4014 _exit(1);
4015 }
4016 }
4017
4018 ret = loader_exec(execfd, filename, target_argv, target_environ, regs,
4019 info, &bprm);
4020 if (ret != 0) {
4021 printf("Error while loading %s: %s\n", filename, strerror(-ret));
4022 _exit(1);
4023 }
4024
4025 for (wrk = target_environ; *wrk; wrk++) {
4026 free(*wrk);
4027 }
4028
4029 free(target_environ);
4030
4031 if (qemu_log_enabled()) {
4032 #if defined(CONFIG_USE_GUEST_BASE)
4033 qemu_log("guest_base 0x%lx\n", guest_base);
4034 #endif
4035 log_page_dump();
4036
4037 qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
4038 qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code);
4039 qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n",
4040 info->start_code);
4041 qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n",
4042 info->start_data);
4043 qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data);
4044 qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n",
4045 info->start_stack);
4046 qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
4047 qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
4048 }
4049
4050 target_set_brk(info->brk);
4051 syscall_init();
4052 signal_init();
4053
4054 #if defined(CONFIG_USE_GUEST_BASE)
4055 /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay
4056 generating the prologue until now so that the prologue can take
4057 the real value of GUEST_BASE into account. */
4058 tcg_prologue_init(&tcg_ctx);
4059 #endif
4060
4061 #if defined(TARGET_I386)
4062 cpu_x86_set_cpl(env, 3);
4063
4064 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
4065 env->hflags |= HF_PE_MASK;
4066 if (env->features[FEAT_1_EDX] & CPUID_SSE) {
4067 env->cr[4] |= CR4_OSFXSR_MASK;
4068 env->hflags |= HF_OSFXSR_MASK;
4069 }
4070 #ifndef TARGET_ABI32
4071 /* enable 64 bit mode if possible */
4072 if (!(env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM)) {
4073 fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
4074 exit(1);
4075 }
4076 env->cr[4] |= CR4_PAE_MASK;
4077 env->efer |= MSR_EFER_LMA | MSR_EFER_LME;
4078 env->hflags |= HF_LMA_MASK;
4079 #endif
4080
4081 /* flags setup : we activate the IRQs by default as in user mode */
4082 env->eflags |= IF_MASK;
4083
4084 /* linux register setup */
4085 #ifndef TARGET_ABI32
4086 env->regs[R_EAX] = regs->rax;
4087 env->regs[R_EBX] = regs->rbx;
4088 env->regs[R_ECX] = regs->rcx;
4089 env->regs[R_EDX] = regs->rdx;
4090 env->regs[R_ESI] = regs->rsi;
4091 env->regs[R_EDI] = regs->rdi;
4092 env->regs[R_EBP] = regs->rbp;
4093 env->regs[R_ESP] = regs->rsp;
4094 env->eip = regs->rip;
4095 #else
4096 env->regs[R_EAX] = regs->eax;
4097 env->regs[R_EBX] = regs->ebx;
4098 env->regs[R_ECX] = regs->ecx;
4099 env->regs[R_EDX] = regs->edx;
4100 env->regs[R_ESI] = regs->esi;
4101 env->regs[R_EDI] = regs->edi;
4102 env->regs[R_EBP] = regs->ebp;
4103 env->regs[R_ESP] = regs->esp;
4104 env->eip = regs->eip;
4105 #endif
4106
4107 /* linux interrupt setup */
4108 #ifndef TARGET_ABI32
4109 env->idt.limit = 511;
4110 #else
4111 env->idt.limit = 255;
4112 #endif
4113 env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1),
4114 PROT_READ|PROT_WRITE,
4115 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
4116 idt_table = g2h(env->idt.base);
4117 set_idt(0, 0);
4118 set_idt(1, 0);
4119 set_idt(2, 0);
4120 set_idt(3, 3);
4121 set_idt(4, 3);
4122 set_idt(5, 0);
4123 set_idt(6, 0);
4124 set_idt(7, 0);
4125 set_idt(8, 0);
4126 set_idt(9, 0);
4127 set_idt(10, 0);
4128 set_idt(11, 0);
4129 set_idt(12, 0);
4130 set_idt(13, 0);
4131 set_idt(14, 0);
4132 set_idt(15, 0);
4133 set_idt(16, 0);
4134 set_idt(17, 0);
4135 set_idt(18, 0);
4136 set_idt(19, 0);
4137 set_idt(0x80, 3);
4138
4139 /* linux segment setup */
4140 {
4141 uint64_t *gdt_table;
4142 env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES,
4143 PROT_READ|PROT_WRITE,
4144 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
4145 env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1;
4146 gdt_table = g2h(env->gdt.base);
4147 #ifdef TARGET_ABI32
4148 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
4149 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
4150 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
4151 #else
4152 /* 64 bit code segment */
4153 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
4154 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
4155 DESC_L_MASK |
4156 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
4157 #endif
4158 write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
4159 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
4160 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
4161 }
4162 cpu_x86_load_seg(env, R_CS, __USER_CS);
4163 cpu_x86_load_seg(env, R_SS, __USER_DS);
4164 #ifdef TARGET_ABI32
4165 cpu_x86_load_seg(env, R_DS, __USER_DS);
4166 cpu_x86_load_seg(env, R_ES, __USER_DS);
4167 cpu_x86_load_seg(env, R_FS, __USER_DS);
4168 cpu_x86_load_seg(env, R_GS, __USER_DS);
4169 /* This hack makes Wine work... */
4170 env->segs[R_FS].selector = 0;
4171 #else
4172 cpu_x86_load_seg(env, R_DS, 0);
4173 cpu_x86_load_seg(env, R_ES, 0);
4174 cpu_x86_load_seg(env, R_FS, 0);
4175 cpu_x86_load_seg(env, R_GS, 0);
4176 #endif
4177 #elif defined(TARGET_AARCH64)
4178 {
4179 int i;
4180
4181 if (!(arm_feature(env, ARM_FEATURE_AARCH64))) {
4182 fprintf(stderr,
4183 "The selected ARM CPU does not support 64 bit mode\n");
4184 exit(1);
4185 }
4186
4187 for (i = 0; i < 31; i++) {
4188 env->xregs[i] = regs->regs[i];
4189 }
4190 env->pc = regs->pc;
4191 env->xregs[31] = regs->sp;
4192 }
4193 #elif defined(TARGET_ARM)
4194 {
4195 int i;
4196 cpsr_write(env, regs->uregs[16], 0xffffffff);
4197 for(i = 0; i < 16; i++) {
4198 env->regs[i] = regs->uregs[i];
4199 }
4200 /* Enable BE8. */
4201 if (EF_ARM_EABI_VERSION(info->elf_flags) >= EF_ARM_EABI_VER4
4202 && (info->elf_flags & EF_ARM_BE8)) {
4203 env->bswap_code = 1;
4204 }
4205 }
4206 #elif defined(TARGET_UNICORE32)
4207 {
4208 int i;
4209 cpu_asr_write(env, regs->uregs[32], 0xffffffff);
4210 for (i = 0; i < 32; i++) {
4211 env->regs[i] = regs->uregs[i];
4212 }
4213 }
4214 #elif defined(TARGET_SPARC)
4215 {
4216 int i;
4217 env->pc = regs->pc;
4218 env->npc = regs->npc;
4219 env->y = regs->y;
4220 for(i = 0; i < 8; i++)
4221 env->gregs[i] = regs->u_regs[i];
4222 for(i = 0; i < 8; i++)
4223 env->regwptr[i] = regs->u_regs[i + 8];
4224 }
4225 #elif defined(TARGET_PPC)
4226 {
4227 int i;
4228
4229 #if defined(TARGET_PPC64)
4230 #if defined(TARGET_ABI32)
4231 env->msr &= ~((target_ulong)1 << MSR_SF);
4232 #else
4233 env->msr |= (target_ulong)1 << MSR_SF;
4234 #endif
4235 #endif
4236 env->nip = regs->nip;
4237 for(i = 0; i < 32; i++) {
4238 env->gpr[i] = regs->gpr[i];
4239 }
4240 }
4241 #elif defined(TARGET_M68K)
4242 {
4243 env->pc = regs->pc;
4244 env->dregs[0] = regs->d0;
4245 env->dregs[1] = regs->d1;
4246 env->dregs[2] = regs->d2;
4247 env->dregs[3] = regs->d3;
4248 env->dregs[4] = regs->d4;
4249 env->dregs[5] = regs->d5;
4250 env->dregs[6] = regs->d6;
4251 env->dregs[7] = regs->d7;
4252 env->aregs[0] = regs->a0;
4253 env->aregs[1] = regs->a1;
4254 env->aregs[2] = regs->a2;
4255 env->aregs[3] = regs->a3;
4256 env->aregs[4] = regs->a4;
4257 env->aregs[5] = regs->a5;
4258 env->aregs[6] = regs->a6;
4259 env->aregs[7] = regs->usp;
4260 env->sr = regs->sr;
4261 ts->sim_syscalls = 1;
4262 }
4263 #elif defined(TARGET_MICROBLAZE)
4264 {
4265 env->regs[0] = regs->r0;
4266 env->regs[1] = regs->r1;
4267 env->regs[2] = regs->r2;
4268 env->regs[3] = regs->r3;
4269 env->regs[4] = regs->r4;
4270 env->regs[5] = regs->r5;
4271 env->regs[6] = regs->r6;
4272 env->regs[7] = regs->r7;
4273 env->regs[8] = regs->r8;
4274 env->regs[9] = regs->r9;
4275 env->regs[10] = regs->r10;
4276 env->regs[11] = regs->r11;
4277 env->regs[12] = regs->r12;
4278 env->regs[13] = regs->r13;
4279 env->regs[14] = regs->r14;
4280 env->regs[15] = regs->r15;
4281 env->regs[16] = regs->r16;
4282 env->regs[17] = regs->r17;
4283 env->regs[18] = regs->r18;
4284 env->regs[19] = regs->r19;
4285 env->regs[20] = regs->r20;
4286 env->regs[21] = regs->r21;
4287 env->regs[22] = regs->r22;
4288 env->regs[23] = regs->r23;
4289 env->regs[24] = regs->r24;
4290 env->regs[25] = regs->r25;
4291 env->regs[26] = regs->r26;
4292 env->regs[27] = regs->r27;
4293 env->regs[28] = regs->r28;
4294 env->regs[29] = regs->r29;
4295 env->regs[30] = regs->r30;
4296 env->regs[31] = regs->r31;
4297 env->sregs[SR_PC] = regs->pc;
4298 }
4299 #elif defined(TARGET_MIPS)
4300 {
4301 int i;
4302
4303 for(i = 0; i < 32; i++) {
4304 env->active_tc.gpr[i] = regs->regs[i];
4305 }
4306 env->active_tc.PC = regs->cp0_epc & ~(target_ulong)1;
4307 if (regs->cp0_epc & 1) {
4308 env->hflags |= MIPS_HFLAG_M16;
4309 }
4310 }
4311 #elif defined(TARGET_OPENRISC)
4312 {
4313 int i;
4314
4315 for (i = 0; i < 32; i++) {
4316 env->gpr[i] = regs->gpr[i];
4317 }
4318
4319 env->sr = regs->sr;
4320 env->pc = regs->pc;
4321 }
4322 #elif defined(TARGET_SH4)
4323 {
4324 int i;
4325
4326 for(i = 0; i < 16; i++) {
4327 env->gregs[i] = regs->regs[i];
4328 }
4329 env->pc = regs->pc;
4330 }
4331 #elif defined(TARGET_ALPHA)
4332 {
4333 int i;
4334
4335 for(i = 0; i < 28; i++) {
4336 env->ir[i] = ((abi_ulong *)regs)[i];
4337 }
4338 env->ir[IR_SP] = regs->usp;
4339 env->pc = regs->pc;
4340 }
4341 #elif defined(TARGET_CRIS)
4342 {
4343 env->regs[0] = regs->r0;
4344 env->regs[1] = regs->r1;
4345 env->regs[2] = regs->r2;
4346 env->regs[3] = regs->r3;
4347 env->regs[4] = regs->r4;
4348 env->regs[5] = regs->r5;
4349 env->regs[6] = regs->r6;
4350 env->regs[7] = regs->r7;
4351 env->regs[8] = regs->r8;
4352 env->regs[9] = regs->r9;
4353 env->regs[10] = regs->r10;
4354 env->regs[11] = regs->r11;
4355 env->regs[12] = regs->r12;
4356 env->regs[13] = regs->r13;
4357 env->regs[14] = info->start_stack;
4358 env->regs[15] = regs->acr;
4359 env->pc = regs->erp;
4360 }
4361 #elif defined(TARGET_S390X)
4362 {
4363 int i;
4364 for (i = 0; i < 16; i++) {
4365 env->regs[i] = regs->gprs[i];
4366 }
4367 env->psw.mask = regs->psw.mask;
4368 env->psw.addr = regs->psw.addr;
4369 }
4370 #else
4371 #error unsupported target CPU
4372 #endif
4373
4374 #if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32)
4375 ts->stack_base = info->start_stack;
4376 ts->heap_base = info->brk;
4377 /* This will be filled in on the first SYS_HEAPINFO call. */
4378 ts->heap_limit = 0;
4379 #endif
4380
4381 if (gdbstub_port) {
4382 if (gdbserver_start(gdbstub_port) < 0) {
4383 fprintf(stderr, "qemu: could not open gdbserver on port %d\n",
4384 gdbstub_port);
4385 exit(1);
4386 }
4387 gdb_handlesig(cpu, 0);
4388 }
4389 cpu_loop(env);
4390 /* never exits */
4391 return 0;
4392 }
AR7 emulation for QEMU