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virtio-net: remove useless codes
[qemu/ar7.git] / linux-user / main.c
blobfdee9813519758e47abf0753c45930f731b8e080
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 "cpu.h"
32 #include "tcg.h"
33 #include "qemu/timer.h"
34 #include "qemu/envlist.h"
35 #include "elf.h"
36
37 char *exec_path;
38
39 int singlestep;
40 const char *filename;
41 const char *argv0;
42 int gdbstub_port;
43 envlist_t *envlist;
44 static const char *cpu_model;
45 unsigned long mmap_min_addr;
46 #if defined(CONFIG_USE_GUEST_BASE)
47 unsigned long guest_base;
48 int have_guest_base;
49 #if (TARGET_LONG_BITS == 32) && (HOST_LONG_BITS == 64)
50 /*
51 * When running 32-on-64 we should make sure we can fit all of the possible
52 * guest address space into a contiguous chunk of virtual host memory.
53 *
54 * This way we will never overlap with our own libraries or binaries or stack
55 * or anything else that QEMU maps.
56 */
57 # ifdef TARGET_MIPS
58 /* MIPS only supports 31 bits of virtual address space for user space */
59 unsigned long reserved_va = 0x77000000;
60 # else
61 unsigned long reserved_va = 0xf7000000;
62 # endif
63 #else
64 unsigned long reserved_va;
65 #endif
66 #endif
67
68 static void usage(void);
69
70 static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
71 const char *qemu_uname_release;
72
73 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
74 we allocate a bigger stack. Need a better solution, for example
75 by remapping the process stack directly at the right place */
76 unsigned long guest_stack_size = 8 * 1024 * 1024UL;
77
78 void gemu_log(const char *fmt, ...)
79 {
80 va_list ap;
81
82 va_start(ap, fmt);
83 vfprintf(stderr, fmt, ap);
84 va_end(ap);
85 }
86
87 #if defined(TARGET_I386)
88 int cpu_get_pic_interrupt(CPUX86State *env)
89 {
90 return -1;
91 }
92 #endif
93
94 /***********************************************************/
95 /* Helper routines for implementing atomic operations. */
96
97 /* To implement exclusive operations we force all cpus to syncronise.
98 We don't require a full sync, only that no cpus are executing guest code.
99 The alternative is to map target atomic ops onto host equivalents,
100 which requires quite a lot of per host/target work. */
101 static pthread_mutex_t cpu_list_mutex = PTHREAD_MUTEX_INITIALIZER;
102 static pthread_mutex_t exclusive_lock = PTHREAD_MUTEX_INITIALIZER;
103 static pthread_cond_t exclusive_cond = PTHREAD_COND_INITIALIZER;
104 static pthread_cond_t exclusive_resume = PTHREAD_COND_INITIALIZER;
105 static int pending_cpus;
106
107 /* Make sure everything is in a consistent state for calling fork(). */
108 void fork_start(void)
109 {
110 pthread_mutex_lock(&tcg_ctx.tb_ctx.tb_lock);
111 pthread_mutex_lock(&exclusive_lock);
112 mmap_fork_start();
113 }
114
115 void fork_end(int child)
116 {
117 mmap_fork_end(child);
118 if (child) {
119 CPUState *cpu, *next_cpu;
120 /* Child processes created by fork() only have a single thread.
121 Discard information about the parent threads. */
122 CPU_FOREACH_SAFE(cpu, next_cpu) {
123 if (cpu != thread_cpu) {
124 QTAILQ_REMOVE(&cpus, thread_cpu, node);
125 }
126 }
127 pending_cpus = 0;
128 pthread_mutex_init(&exclusive_lock, NULL);
129 pthread_mutex_init(&cpu_list_mutex, NULL);
130 pthread_cond_init(&exclusive_cond, NULL);
131 pthread_cond_init(&exclusive_resume, NULL);
132 pthread_mutex_init(&tcg_ctx.tb_ctx.tb_lock, NULL);
133 gdbserver_fork(thread_cpu);
134 } else {
135 pthread_mutex_unlock(&exclusive_lock);
136 pthread_mutex_unlock(&tcg_ctx.tb_ctx.tb_lock);
137 }
138 }
139
140 /* Wait for pending exclusive operations to complete. The exclusive lock
141 must be held. */
142 static inline void exclusive_idle(void)
143 {
144 while (pending_cpus) {
145 pthread_cond_wait(&exclusive_resume, &exclusive_lock);
146 }
147 }
148
149 /* Start an exclusive operation.
150 Must only be called from outside cpu_arm_exec. */
151 static inline void start_exclusive(void)
152 {
153 CPUState *other_cpu;
154
155 pthread_mutex_lock(&exclusive_lock);
156 exclusive_idle();
157
158 pending_cpus = 1;
159 /* Make all other cpus stop executing. */
160 CPU_FOREACH(other_cpu) {
161 if (other_cpu->running) {
162 pending_cpus++;
163 cpu_exit(other_cpu);
164 }
165 }
166 if (pending_cpus > 1) {
167 pthread_cond_wait(&exclusive_cond, &exclusive_lock);
168 }
169 }
170
171 /* Finish an exclusive operation. */
172 static inline void __attribute__((unused)) end_exclusive(void)
173 {
174 pending_cpus = 0;
175 pthread_cond_broadcast(&exclusive_resume);
176 pthread_mutex_unlock(&exclusive_lock);
177 }
178
179 /* Wait for exclusive ops to finish, and begin cpu execution. */
180 static inline void cpu_exec_start(CPUState *cpu)
181 {
182 pthread_mutex_lock(&exclusive_lock);
183 exclusive_idle();
184 cpu->running = true;
185 pthread_mutex_unlock(&exclusive_lock);
186 }
187
188 /* Mark cpu as not executing, and release pending exclusive ops. */
189 static inline void cpu_exec_end(CPUState *cpu)
190 {
191 pthread_mutex_lock(&exclusive_lock);
192 cpu->running = false;
193 if (pending_cpus > 1) {
194 pending_cpus--;
195 if (pending_cpus == 1) {
196 pthread_cond_signal(&exclusive_cond);
197 }
198 }
199 exclusive_idle();
200 pthread_mutex_unlock(&exclusive_lock);
201 }
202
203 void cpu_list_lock(void)
204 {
205 pthread_mutex_lock(&cpu_list_mutex);
206 }
207
208 void cpu_list_unlock(void)
209 {
210 pthread_mutex_unlock(&cpu_list_mutex);
211 }
212
213
214 #ifdef TARGET_I386
215 /***********************************************************/
216 /* CPUX86 core interface */
217
218 uint64_t cpu_get_tsc(CPUX86State *env)
219 {
220 return cpu_get_real_ticks();
221 }
222
223 static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
224 int flags)
225 {
226 unsigned int e1, e2;
227 uint32_t *p;
228 e1 = (addr << 16) | (limit & 0xffff);
229 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
230 e2 |= flags;
231 p = ptr;
232 p[0] = tswap32(e1);
233 p[1] = tswap32(e2);
234 }
235
236 static uint64_t *idt_table;
237 #ifdef TARGET_X86_64
238 static void set_gate64(void *ptr, unsigned int type, unsigned int dpl,
239 uint64_t addr, unsigned int sel)
240 {
241 uint32_t *p, e1, e2;
242 e1 = (addr & 0xffff) | (sel << 16);
243 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
244 p = ptr;
245 p[0] = tswap32(e1);
246 p[1] = tswap32(e2);
247 p[2] = tswap32(addr >> 32);
248 p[3] = 0;
249 }
250 /* only dpl matters as we do only user space emulation */
251 static void set_idt(int n, unsigned int dpl)
252 {
253 set_gate64(idt_table + n * 2, 0, dpl, 0, 0);
254 }
255 #else
256 static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
257 uint32_t addr, unsigned int sel)
258 {
259 uint32_t *p, e1, e2;
260 e1 = (addr & 0xffff) | (sel << 16);
261 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
262 p = ptr;
263 p[0] = tswap32(e1);
264 p[1] = tswap32(e2);
265 }
266
267 /* only dpl matters as we do only user space emulation */
268 static void set_idt(int n, unsigned int dpl)
269 {
270 set_gate(idt_table + n, 0, dpl, 0, 0);
271 }
272 #endif
273
274 void cpu_loop(CPUX86State *env)
275 {
276 CPUState *cs = CPU(x86_env_get_cpu(env));
277 int trapnr;
278 abi_ulong pc;
279 target_siginfo_t info;
280
281 for(;;) {
282 cpu_exec_start(cs);
283 trapnr = cpu_x86_exec(cs);
284 cpu_exec_end(cs);
285 switch(trapnr) {
286 case 0x80:
287 /* linux syscall from int $0x80 */
288 env->regs[R_EAX] = do_syscall(env,
289 env->regs[R_EAX],
290 env->regs[R_EBX],
291 env->regs[R_ECX],
292 env->regs[R_EDX],
293 env->regs[R_ESI],
294 env->regs[R_EDI],
295 env->regs[R_EBP],
296 0, 0);
297 break;
298 #ifndef TARGET_ABI32
299 case EXCP_SYSCALL:
300 /* linux syscall from syscall instruction */
301 env->regs[R_EAX] = do_syscall(env,
302 env->regs[R_EAX],
303 env->regs[R_EDI],
304 env->regs[R_ESI],
305 env->regs[R_EDX],
306 env->regs[10],
307 env->regs[8],
308 env->regs[9],
309 0, 0);
310 break;
311 #endif
312 case EXCP0B_NOSEG:
313 case EXCP0C_STACK:
314 info.si_signo = TARGET_SIGBUS;
315 info.si_errno = 0;
316 info.si_code = TARGET_SI_KERNEL;
317 info._sifields._sigfault._addr = 0;
318 queue_signal(env, info.si_signo, &info);
319 break;
320 case EXCP0D_GPF:
321 /* XXX: potential problem if ABI32 */
322 #ifndef TARGET_X86_64
323 if (env->eflags & VM_MASK) {
324 handle_vm86_fault(env);
325 } else
326 #endif
327 {
328 info.si_signo = TARGET_SIGSEGV;
329 info.si_errno = 0;
330 info.si_code = TARGET_SI_KERNEL;
331 info._sifields._sigfault._addr = 0;
332 queue_signal(env, info.si_signo, &info);
333 }
334 break;
335 case EXCP0E_PAGE:
336 info.si_signo = TARGET_SIGSEGV;
337 info.si_errno = 0;
338 if (!(env->error_code & 1))
339 info.si_code = TARGET_SEGV_MAPERR;
340 else
341 info.si_code = TARGET_SEGV_ACCERR;
342 info._sifields._sigfault._addr = env->cr[2];
343 queue_signal(env, info.si_signo, &info);
344 break;
345 case EXCP00_DIVZ:
346 #ifndef TARGET_X86_64
347 if (env->eflags & VM_MASK) {
348 handle_vm86_trap(env, trapnr);
349 } else
350 #endif
351 {
352 /* division by zero */
353 info.si_signo = TARGET_SIGFPE;
354 info.si_errno = 0;
355 info.si_code = TARGET_FPE_INTDIV;
356 info._sifields._sigfault._addr = env->eip;
357 queue_signal(env, info.si_signo, &info);
358 }
359 break;
360 case EXCP01_DB:
361 case EXCP03_INT3:
362 #ifndef TARGET_X86_64
363 if (env->eflags & VM_MASK) {
364 handle_vm86_trap(env, trapnr);
365 } else
366 #endif
367 {
368 info.si_signo = TARGET_SIGTRAP;
369 info.si_errno = 0;
370 if (trapnr == EXCP01_DB) {
371 info.si_code = TARGET_TRAP_BRKPT;
372 info._sifields._sigfault._addr = env->eip;
373 } else {
374 info.si_code = TARGET_SI_KERNEL;
375 info._sifields._sigfault._addr = 0;
376 }
377 queue_signal(env, info.si_signo, &info);
378 }
379 break;
380 case EXCP04_INTO:
381 case EXCP05_BOUND:
382 #ifndef TARGET_X86_64
383 if (env->eflags & VM_MASK) {
384 handle_vm86_trap(env, trapnr);
385 } else
386 #endif
387 {
388 info.si_signo = TARGET_SIGSEGV;
389 info.si_errno = 0;
390 info.si_code = TARGET_SI_KERNEL;
391 info._sifields._sigfault._addr = 0;
392 queue_signal(env, info.si_signo, &info);
393 }
394 break;
395 case EXCP06_ILLOP:
396 info.si_signo = TARGET_SIGILL;
397 info.si_errno = 0;
398 info.si_code = TARGET_ILL_ILLOPN;
399 info._sifields._sigfault._addr = env->eip;
400 queue_signal(env, info.si_signo, &info);
401 break;
402 case EXCP_INTERRUPT:
403 /* just indicate that signals should be handled asap */
404 break;
405 case EXCP_DEBUG:
406 {
407 int sig;
408
409 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
410 if (sig)
411 {
412 info.si_signo = sig;
413 info.si_errno = 0;
414 info.si_code = TARGET_TRAP_BRKPT;
415 queue_signal(env, info.si_signo, &info);
416 }
417 }
418 break;
419 default:
420 pc = env->segs[R_CS].base + env->eip;
421 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
422 (long)pc, trapnr);
423 abort();
424 }
425 process_pending_signals(env);
426 }
427 }
428 #endif
429
430 #ifdef TARGET_ARM
431
432 #define get_user_code_u32(x, gaddr, doswap) \
433 ({ abi_long __r = get_user_u32((x), (gaddr)); \
434 if (!__r && (doswap)) { \
435 (x) = bswap32(x); \
436 } \
437 __r; \
438 })
439
440 #define get_user_code_u16(x, gaddr, doswap) \
441 ({ abi_long __r = get_user_u16((x), (gaddr)); \
442 if (!__r && (doswap)) { \
443 (x) = bswap16(x); \
444 } \
445 __r; \
446 })
447
448 #ifdef TARGET_ABI32
449 /* Commpage handling -- there is no commpage for AArch64 */
450
451 /*
452 * See the Linux kernel's Documentation/arm/kernel_user_helpers.txt
453 * Input:
454 * r0 = pointer to oldval
455 * r1 = pointer to newval
456 * r2 = pointer to target value
457 *
458 * Output:
459 * r0 = 0 if *ptr was changed, non-0 if no exchange happened
460 * C set if *ptr was changed, clear if no exchange happened
461 *
462 * Note segv's in kernel helpers are a bit tricky, we can set the
463 * data address sensibly but the PC address is just the entry point.
464 */
465 static void arm_kernel_cmpxchg64_helper(CPUARMState *env)
466 {
467 uint64_t oldval, newval, val;
468 uint32_t addr, cpsr;
469 target_siginfo_t info;
470
471 /* Based on the 32 bit code in do_kernel_trap */
472
473 /* XXX: This only works between threads, not between processes.
474 It's probably possible to implement this with native host
475 operations. However things like ldrex/strex are much harder so
476 there's not much point trying. */
477 start_exclusive();
478 cpsr = cpsr_read(env);
479 addr = env->regs[2];
480
481 if (get_user_u64(oldval, env->regs[0])) {
482 env->exception.vaddress = env->regs[0];
483 goto segv;
484 };
485
486 if (get_user_u64(newval, env->regs[1])) {
487 env->exception.vaddress = env->regs[1];
488 goto segv;
489 };
490
491 if (get_user_u64(val, addr)) {
492 env->exception.vaddress = addr;
493 goto segv;
494 }
495
496 if (val == oldval) {
497 val = newval;
498
499 if (put_user_u64(val, addr)) {
500 env->exception.vaddress = addr;
501 goto segv;
502 };
503
504 env->regs[0] = 0;
505 cpsr |= CPSR_C;
506 } else {
507 env->regs[0] = -1;
508 cpsr &= ~CPSR_C;
509 }
510 cpsr_write(env, cpsr, CPSR_C);
511 end_exclusive();
512 return;
513
514 segv:
515 end_exclusive();
516 /* We get the PC of the entry address - which is as good as anything,
517 on a real kernel what you get depends on which mode it uses. */
518 info.si_signo = TARGET_SIGSEGV;
519 info.si_errno = 0;
520 /* XXX: check env->error_code */
521 info.si_code = TARGET_SEGV_MAPERR;
522 info._sifields._sigfault._addr = env->exception.vaddress;
523 queue_signal(env, info.si_signo, &info);
524 }
525
526 /* Handle a jump to the kernel code page. */
527 static int
528 do_kernel_trap(CPUARMState *env)
529 {
530 uint32_t addr;
531 uint32_t cpsr;
532 uint32_t val;
533
534 switch (env->regs[15]) {
535 case 0xffff0fa0: /* __kernel_memory_barrier */
536 /* ??? No-op. Will need to do better for SMP. */
537 break;
538 case 0xffff0fc0: /* __kernel_cmpxchg */
539 /* XXX: This only works between threads, not between processes.
540 It's probably possible to implement this with native host
541 operations. However things like ldrex/strex are much harder so
542 there's not much point trying. */
543 start_exclusive();
544 cpsr = cpsr_read(env);
545 addr = env->regs[2];
546 /* FIXME: This should SEGV if the access fails. */
547 if (get_user_u32(val, addr))
548 val = ~env->regs[0];
549 if (val == env->regs[0]) {
550 val = env->regs[1];
551 /* FIXME: Check for segfaults. */
552 put_user_u32(val, addr);
553 env->regs[0] = 0;
554 cpsr |= CPSR_C;
555 } else {
556 env->regs[0] = -1;
557 cpsr &= ~CPSR_C;
558 }
559 cpsr_write(env, cpsr, CPSR_C);
560 end_exclusive();
561 break;
562 case 0xffff0fe0: /* __kernel_get_tls */
563 env->regs[0] = cpu_get_tls(env);
564 break;
565 case 0xffff0f60: /* __kernel_cmpxchg64 */
566 arm_kernel_cmpxchg64_helper(env);
567 break;
568
569 default:
570 return 1;
571 }
572 /* Jump back to the caller. */
573 addr = env->regs[14];
574 if (addr & 1) {
575 env->thumb = 1;
576 addr &= ~1;
577 }
578 env->regs[15] = addr;
579
580 return 0;
581 }
582
583 /* Store exclusive handling for AArch32 */
584 static int do_strex(CPUARMState *env)
585 {
586 uint64_t val;
587 int size;
588 int rc = 1;
589 int segv = 0;
590 uint32_t addr;
591 start_exclusive();
592 if (env->exclusive_addr != env->exclusive_test) {
593 goto fail;
594 }
595 /* We know we're always AArch32 so the address is in uint32_t range
596 * unless it was the -1 exclusive-monitor-lost value (which won't
597 * match exclusive_test above).
598 */
599 assert(extract64(env->exclusive_addr, 32, 32) == 0);
600 addr = env->exclusive_addr;
601 size = env->exclusive_info & 0xf;
602 switch (size) {
603 case 0:
604 segv = get_user_u8(val, addr);
605 break;
606 case 1:
607 segv = get_user_u16(val, addr);
608 break;
609 case 2:
610 case 3:
611 segv = get_user_u32(val, addr);
612 break;
613 default:
614 abort();
615 }
616 if (segv) {
617 env->exception.vaddress = addr;
618 goto done;
619 }
620 if (size == 3) {
621 uint32_t valhi;
622 segv = get_user_u32(valhi, addr + 4);
623 if (segv) {
624 env->exception.vaddress = addr + 4;
625 goto done;
626 }
627 val = deposit64(val, 32, 32, valhi);
628 }
629 if (val != env->exclusive_val) {
630 goto fail;
631 }
632
633 val = env->regs[(env->exclusive_info >> 8) & 0xf];
634 switch (size) {
635 case 0:
636 segv = put_user_u8(val, addr);
637 break;
638 case 1:
639 segv = put_user_u16(val, addr);
640 break;
641 case 2:
642 case 3:
643 segv = put_user_u32(val, addr);
644 break;
645 }
646 if (segv) {
647 env->exception.vaddress = addr;
648 goto done;
649 }
650 if (size == 3) {
651 val = env->regs[(env->exclusive_info >> 12) & 0xf];
652 segv = put_user_u32(val, addr + 4);
653 if (segv) {
654 env->exception.vaddress = addr + 4;
655 goto done;
656 }
657 }
658 rc = 0;
659 fail:
660 env->regs[15] += 4;
661 env->regs[(env->exclusive_info >> 4) & 0xf] = rc;
662 done:
663 end_exclusive();
664 return segv;
665 }
666
667 void cpu_loop(CPUARMState *env)
668 {
669 CPUState *cs = CPU(arm_env_get_cpu(env));
670 int trapnr;
671 unsigned int n, insn;
672 target_siginfo_t info;
673 uint32_t addr;
674
675 for(;;) {
676 cpu_exec_start(cs);
677 trapnr = cpu_arm_exec(cs);
678 cpu_exec_end(cs);
679 switch(trapnr) {
680 case EXCP_UDEF:
681 {
682 TaskState *ts = cs->opaque;
683 uint32_t opcode;
684 int rc;
685
686 /* we handle the FPU emulation here, as Linux */
687 /* we get the opcode */
688 /* FIXME - what to do if get_user() fails? */
689 get_user_code_u32(opcode, env->regs[15], env->bswap_code);
690
691 rc = EmulateAll(opcode, &ts->fpa, env);
692 if (rc == 0) { /* illegal instruction */
693 info.si_signo = TARGET_SIGILL;
694 info.si_errno = 0;
695 info.si_code = TARGET_ILL_ILLOPN;
696 info._sifields._sigfault._addr = env->regs[15];
697 queue_signal(env, info.si_signo, &info);
698 } else if (rc < 0) { /* FP exception */
699 int arm_fpe=0;
700
701 /* translate softfloat flags to FPSR flags */
702 if (-rc & float_flag_invalid)
703 arm_fpe |= BIT_IOC;
704 if (-rc & float_flag_divbyzero)
705 arm_fpe |= BIT_DZC;
706 if (-rc & float_flag_overflow)
707 arm_fpe |= BIT_OFC;
708 if (-rc & float_flag_underflow)
709 arm_fpe |= BIT_UFC;
710 if (-rc & float_flag_inexact)
711 arm_fpe |= BIT_IXC;
712
713 FPSR fpsr = ts->fpa.fpsr;
714 //printf("fpsr 0x%x, arm_fpe 0x%x\n",fpsr,arm_fpe);
715
716 if (fpsr & (arm_fpe << 16)) { /* exception enabled? */
717 info.si_signo = TARGET_SIGFPE;
718 info.si_errno = 0;
719
720 /* ordered by priority, least first */
721 if (arm_fpe & BIT_IXC) info.si_code = TARGET_FPE_FLTRES;
722 if (arm_fpe & BIT_UFC) info.si_code = TARGET_FPE_FLTUND;
723 if (arm_fpe & BIT_OFC) info.si_code = TARGET_FPE_FLTOVF;
724 if (arm_fpe & BIT_DZC) info.si_code = TARGET_FPE_FLTDIV;
725 if (arm_fpe & BIT_IOC) info.si_code = TARGET_FPE_FLTINV;
726
727 info._sifields._sigfault._addr = env->regs[15];
728 queue_signal(env, info.si_signo, &info);
729 } else {
730 env->regs[15] += 4;
731 }
732
733 /* accumulate unenabled exceptions */
734 if ((!(fpsr & BIT_IXE)) && (arm_fpe & BIT_IXC))
735 fpsr |= BIT_IXC;
736 if ((!(fpsr & BIT_UFE)) && (arm_fpe & BIT_UFC))
737 fpsr |= BIT_UFC;
738 if ((!(fpsr & BIT_OFE)) && (arm_fpe & BIT_OFC))
739 fpsr |= BIT_OFC;
740 if ((!(fpsr & BIT_DZE)) && (arm_fpe & BIT_DZC))
741 fpsr |= BIT_DZC;
742 if ((!(fpsr & BIT_IOE)) && (arm_fpe & BIT_IOC))
743 fpsr |= BIT_IOC;
744 ts->fpa.fpsr=fpsr;
745 } else { /* everything OK */
746 /* increment PC */
747 env->regs[15] += 4;
748 }
749 }
750 break;
751 case EXCP_SWI:
752 case EXCP_BKPT:
753 {
754 env->eabi = 1;
755 /* system call */
756 if (trapnr == EXCP_BKPT) {
757 if (env->thumb) {
758 /* FIXME - what to do if get_user() fails? */
759 get_user_code_u16(insn, env->regs[15], env->bswap_code);
760 n = insn & 0xff;
761 env->regs[15] += 2;
762 } else {
763 /* FIXME - what to do if get_user() fails? */
764 get_user_code_u32(insn, env->regs[15], env->bswap_code);
765 n = (insn & 0xf) | ((insn >> 4) & 0xff0);
766 env->regs[15] += 4;
767 }
768 } else {
769 if (env->thumb) {
770 /* FIXME - what to do if get_user() fails? */
771 get_user_code_u16(insn, env->regs[15] - 2,
772 env->bswap_code);
773 n = insn & 0xff;
774 } else {
775 /* FIXME - what to do if get_user() fails? */
776 get_user_code_u32(insn, env->regs[15] - 4,
777 env->bswap_code);
778 n = insn & 0xffffff;
779 }
780 }
781
782 if (n == ARM_NR_cacheflush) {
783 /* nop */
784 } else if (n == ARM_NR_semihosting
785 || n == ARM_NR_thumb_semihosting) {
786 env->regs[0] = do_arm_semihosting (env);
787 } else if (n == 0 || n >= ARM_SYSCALL_BASE || env->thumb) {
788 /* linux syscall */
789 if (env->thumb || n == 0) {
790 n = env->regs[7];
791 } else {
792 n -= ARM_SYSCALL_BASE;
793 env->eabi = 0;
794 }
795 if ( n > ARM_NR_BASE) {
796 switch (n) {
797 case ARM_NR_cacheflush:
798 /* nop */
799 break;
800 case ARM_NR_set_tls:
801 cpu_set_tls(env, env->regs[0]);
802 env->regs[0] = 0;
803 break;
804 case ARM_NR_breakpoint:
805 env->regs[15] -= env->thumb ? 2 : 4;
806 goto excp_debug;
807 default:
808 gemu_log("qemu: Unsupported ARM syscall: 0x%x\n",
809 n);
810 env->regs[0] = -TARGET_ENOSYS;
811 break;
812 }
813 } else {
814 env->regs[0] = do_syscall(env,
815 n,
816 env->regs[0],
817 env->regs[1],
818 env->regs[2],
819 env->regs[3],
820 env->regs[4],
821 env->regs[5],
822 0, 0);
823 }
824 } else {
825 goto error;
826 }
827 }
828 break;
829 case EXCP_INTERRUPT:
830 /* just indicate that signals should be handled asap */
831 break;
832 case EXCP_STREX:
833 if (!do_strex(env)) {
834 break;
835 }
836 /* fall through for segv */
837 case EXCP_PREFETCH_ABORT:
838 case EXCP_DATA_ABORT:
839 addr = env->exception.vaddress;
840 {
841 info.si_signo = TARGET_SIGSEGV;
842 info.si_errno = 0;
843 /* XXX: check env->error_code */
844 info.si_code = TARGET_SEGV_MAPERR;
845 info._sifields._sigfault._addr = addr;
846 queue_signal(env, info.si_signo, &info);
847 }
848 break;
849 case EXCP_DEBUG:
850 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 default:
869 error:
870 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
871 trapnr);
872 cpu_dump_state(cs, stderr, fprintf, 0);
873 abort();
874 }
875 process_pending_signals(env);
876 }
877 }
878
879 #else
880
881 /*
882 * Handle AArch64 store-release exclusive
883 *
884 * rs = gets the status result of store exclusive
885 * rt = is the register that is stored
886 * rt2 = is the second register store (in STP)
887 *
888 */
889 static int do_strex_a64(CPUARMState *env)
890 {
891 uint64_t val;
892 int size;
893 bool is_pair;
894 int rc = 1;
895 int segv = 0;
896 uint64_t addr;
897 int rs, rt, rt2;
898
899 start_exclusive();
900 /* size | is_pair << 2 | (rs << 4) | (rt << 9) | (rt2 << 14)); */
901 size = extract32(env->exclusive_info, 0, 2);
902 is_pair = extract32(env->exclusive_info, 2, 1);
903 rs = extract32(env->exclusive_info, 4, 5);
904 rt = extract32(env->exclusive_info, 9, 5);
905 rt2 = extract32(env->exclusive_info, 14, 5);
906
907 addr = env->exclusive_addr;
908
909 if (addr != env->exclusive_test) {
910 goto finish;
911 }
912
913 switch (size) {
914 case 0:
915 segv = get_user_u8(val, addr);
916 break;
917 case 1:
918 segv = get_user_u16(val, addr);
919 break;
920 case 2:
921 segv = get_user_u32(val, addr);
922 break;
923 case 3:
924 segv = get_user_u64(val, addr);
925 break;
926 default:
927 abort();
928 }
929 if (segv) {
930 env->exception.vaddress = addr;
931 goto error;
932 }
933 if (val != env->exclusive_val) {
934 goto finish;
935 }
936 if (is_pair) {
937 if (size == 2) {
938 segv = get_user_u32(val, addr + 4);
939 } else {
940 segv = get_user_u64(val, addr + 8);
941 }
942 if (segv) {
943 env->exception.vaddress = addr + (size == 2 ? 4 : 8);
944 goto error;
945 }
946 if (val != env->exclusive_high) {
947 goto finish;
948 }
949 }
950 /* handle the zero register */
951 val = rt == 31 ? 0 : env->xregs[rt];
952 switch (size) {
953 case 0:
954 segv = put_user_u8(val, addr);
955 break;
956 case 1:
957 segv = put_user_u16(val, addr);
958 break;
959 case 2:
960 segv = put_user_u32(val, addr);
961 break;
962 case 3:
963 segv = put_user_u64(val, addr);
964 break;
965 }
966 if (segv) {
967 goto error;
968 }
969 if (is_pair) {
970 /* handle the zero register */
971 val = rt2 == 31 ? 0 : env->xregs[rt2];
972 if (size == 2) {
973 segv = put_user_u32(val, addr + 4);
974 } else {
975 segv = put_user_u64(val, addr + 8);
976 }
977 if (segv) {
978 env->exception.vaddress = addr + (size == 2 ? 4 : 8);
979 goto error;
980 }
981 }
982 rc = 0;
983 finish:
984 env->pc += 4;
985 /* rs == 31 encodes a write to the ZR, thus throwing away
986 * the status return. This is rather silly but valid.
987 */
988 if (rs < 31) {
989 env->xregs[rs] = rc;
990 }
991 error:
992 /* instruction faulted, PC does not advance */
993 /* either way a strex releases any exclusive lock we have */
994 env->exclusive_addr = -1;
995 end_exclusive();
996 return segv;
997 }
998
999 /* AArch64 main loop */
1000 void cpu_loop(CPUARMState *env)
1001 {
1002 CPUState *cs = CPU(arm_env_get_cpu(env));
1003 int trapnr, sig;
1004 target_siginfo_t info;
1005
1006 for (;;) {
1007 cpu_exec_start(cs);
1008 trapnr = cpu_arm_exec(cs);
1009 cpu_exec_end(cs);
1010
1011 switch (trapnr) {
1012 case EXCP_SWI:
1013 env->xregs[0] = do_syscall(env,
1014 env->xregs[8],
1015 env->xregs[0],
1016 env->xregs[1],
1017 env->xregs[2],
1018 env->xregs[3],
1019 env->xregs[4],
1020 env->xregs[5],
1021 0, 0);
1022 break;
1023 case EXCP_INTERRUPT:
1024 /* just indicate that signals should be handled asap */
1025 break;
1026 case EXCP_UDEF:
1027 info.si_signo = TARGET_SIGILL;
1028 info.si_errno = 0;
1029 info.si_code = TARGET_ILL_ILLOPN;
1030 info._sifields._sigfault._addr = env->pc;
1031 queue_signal(env, info.si_signo, &info);
1032 break;
1033 case EXCP_STREX:
1034 if (!do_strex_a64(env)) {
1035 break;
1036 }
1037 /* fall through for segv */
1038 case EXCP_PREFETCH_ABORT:
1039 case EXCP_DATA_ABORT:
1040 info.si_signo = TARGET_SIGSEGV;
1041 info.si_errno = 0;
1042 /* XXX: check env->error_code */
1043 info.si_code = TARGET_SEGV_MAPERR;
1044 info._sifields._sigfault._addr = env->exception.vaddress;
1045 queue_signal(env, info.si_signo, &info);
1046 break;
1047 case EXCP_DEBUG:
1048 case EXCP_BKPT:
1049 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
1050 if (sig) {
1051 info.si_signo = sig;
1052 info.si_errno = 0;
1053 info.si_code = TARGET_TRAP_BRKPT;
1054 queue_signal(env, info.si_signo, &info);
1055 }
1056 break;
1057 default:
1058 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
1059 trapnr);
1060 cpu_dump_state(cs, stderr, fprintf, 0);
1061 abort();
1062 }
1063 process_pending_signals(env);
1064 /* Exception return on AArch64 always clears the exclusive monitor,
1065 * so any return to running guest code implies this.
1066 * A strex (successful or otherwise) also clears the monitor, so
1067 * we don't need to specialcase EXCP_STREX.
1068 */
1069 env->exclusive_addr = -1;
1070 }
1071 }
1072 #endif /* ndef TARGET_ABI32 */
1073
1074 #endif
1075
1076 #ifdef TARGET_UNICORE32
1077
1078 void cpu_loop(CPUUniCore32State *env)
1079 {
1080 CPUState *cs = CPU(uc32_env_get_cpu(env));
1081 int trapnr;
1082 unsigned int n, insn;
1083 target_siginfo_t info;
1084
1085 for (;;) {
1086 cpu_exec_start(cs);
1087 trapnr = uc32_cpu_exec(cs);
1088 cpu_exec_end(cs);
1089 switch (trapnr) {
1090 case UC32_EXCP_PRIV:
1091 {
1092 /* system call */
1093 get_user_u32(insn, env->regs[31] - 4);
1094 n = insn & 0xffffff;
1095
1096 if (n >= UC32_SYSCALL_BASE) {
1097 /* linux syscall */
1098 n -= UC32_SYSCALL_BASE;
1099 if (n == UC32_SYSCALL_NR_set_tls) {
1100 cpu_set_tls(env, env->regs[0]);
1101 env->regs[0] = 0;
1102 } else {
1103 env->regs[0] = do_syscall(env,
1104 n,
1105 env->regs[0],
1106 env->regs[1],
1107 env->regs[2],
1108 env->regs[3],
1109 env->regs[4],
1110 env->regs[5],
1111 0, 0);
1112 }
1113 } else {
1114 goto error;
1115 }
1116 }
1117 break;
1118 case UC32_EXCP_DTRAP:
1119 case UC32_EXCP_ITRAP:
1120 info.si_signo = TARGET_SIGSEGV;
1121 info.si_errno = 0;
1122 /* XXX: check env->error_code */
1123 info.si_code = TARGET_SEGV_MAPERR;
1124 info._sifields._sigfault._addr = env->cp0.c4_faultaddr;
1125 queue_signal(env, info.si_signo, &info);
1126 break;
1127 case EXCP_INTERRUPT:
1128 /* just indicate that signals should be handled asap */
1129 break;
1130 case EXCP_DEBUG:
1131 {
1132 int sig;
1133
1134 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
1135 if (sig) {
1136 info.si_signo = sig;
1137 info.si_errno = 0;
1138 info.si_code = TARGET_TRAP_BRKPT;
1139 queue_signal(env, info.si_signo, &info);
1140 }
1141 }
1142 break;
1143 default:
1144 goto error;
1145 }
1146 process_pending_signals(env);
1147 }
1148
1149 error:
1150 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr);
1151 cpu_dump_state(cs, stderr, fprintf, 0);
1152 abort();
1153 }
1154 #endif
1155
1156 #ifdef TARGET_SPARC
1157 #define SPARC64_STACK_BIAS 2047
1158
1159 //#define DEBUG_WIN
1160
1161 /* WARNING: dealing with register windows _is_ complicated. More info
1162 can be found at http://www.sics.se/~psm/sparcstack.html */
1163 static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
1164 {
1165 index = (index + cwp * 16) % (16 * env->nwindows);
1166 /* wrap handling : if cwp is on the last window, then we use the
1167 registers 'after' the end */
1168 if (index < 8 && env->cwp == env->nwindows - 1)
1169 index += 16 * env->nwindows;
1170 return index;
1171 }
1172
1173 /* save the register window 'cwp1' */
1174 static inline void save_window_offset(CPUSPARCState *env, int cwp1)
1175 {
1176 unsigned int i;
1177 abi_ulong sp_ptr;
1178
1179 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
1180 #ifdef TARGET_SPARC64
1181 if (sp_ptr & 3)
1182 sp_ptr += SPARC64_STACK_BIAS;
1183 #endif
1184 #if defined(DEBUG_WIN)
1185 printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n",
1186 sp_ptr, cwp1);
1187 #endif
1188 for(i = 0; i < 16; i++) {
1189 /* FIXME - what to do if put_user() fails? */
1190 put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
1191 sp_ptr += sizeof(abi_ulong);
1192 }
1193 }
1194
1195 static void save_window(CPUSPARCState *env)
1196 {
1197 #ifndef TARGET_SPARC64
1198 unsigned int new_wim;
1199 new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) &
1200 ((1LL << env->nwindows) - 1);
1201 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
1202 env->wim = new_wim;
1203 #else
1204 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
1205 env->cansave++;
1206 env->canrestore--;
1207 #endif
1208 }
1209
1210 static void restore_window(CPUSPARCState *env)
1211 {
1212 #ifndef TARGET_SPARC64
1213 unsigned int new_wim;
1214 #endif
1215 unsigned int i, cwp1;
1216 abi_ulong sp_ptr;
1217
1218 #ifndef TARGET_SPARC64
1219 new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) &
1220 ((1LL << env->nwindows) - 1);
1221 #endif
1222
1223 /* restore the invalid window */
1224 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
1225 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
1226 #ifdef TARGET_SPARC64
1227 if (sp_ptr & 3)
1228 sp_ptr += SPARC64_STACK_BIAS;
1229 #endif
1230 #if defined(DEBUG_WIN)
1231 printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n",
1232 sp_ptr, cwp1);
1233 #endif
1234 for(i = 0; i < 16; i++) {
1235 /* FIXME - what to do if get_user() fails? */
1236 get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
1237 sp_ptr += sizeof(abi_ulong);
1238 }
1239 #ifdef TARGET_SPARC64
1240 env->canrestore++;
1241 if (env->cleanwin < env->nwindows - 1)
1242 env->cleanwin++;
1243 env->cansave--;
1244 #else
1245 env->wim = new_wim;
1246 #endif
1247 }
1248
1249 static void flush_windows(CPUSPARCState *env)
1250 {
1251 int offset, cwp1;
1252
1253 offset = 1;
1254 for(;;) {
1255 /* if restore would invoke restore_window(), then we can stop */
1256 cwp1 = cpu_cwp_inc(env, env->cwp + offset);
1257 #ifndef TARGET_SPARC64
1258 if (env->wim & (1 << cwp1))
1259 break;
1260 #else
1261 if (env->canrestore == 0)
1262 break;
1263 env->cansave++;
1264 env->canrestore--;
1265 #endif
1266 save_window_offset(env, cwp1);
1267 offset++;
1268 }
1269 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
1270 #ifndef TARGET_SPARC64
1271 /* set wim so that restore will reload the registers */
1272 env->wim = 1 << cwp1;
1273 #endif
1274 #if defined(DEBUG_WIN)
1275 printf("flush_windows: nb=%d\n", offset - 1);
1276 #endif
1277 }
1278
1279 void cpu_loop (CPUSPARCState *env)
1280 {
1281 CPUState *cs = CPU(sparc_env_get_cpu(env));
1282 int trapnr;
1283 abi_long ret;
1284 target_siginfo_t info;
1285
1286 while (1) {
1287 cpu_exec_start(cs);
1288 trapnr = cpu_sparc_exec(cs);
1289 cpu_exec_end(cs);
1290
1291 /* Compute PSR before exposing state. */
1292 if (env->cc_op != CC_OP_FLAGS) {
1293 cpu_get_psr(env);
1294 }
1295
1296 switch (trapnr) {
1297 #ifndef TARGET_SPARC64
1298 case 0x88:
1299 case 0x90:
1300 #else
1301 case 0x110:
1302 case 0x16d:
1303 #endif
1304 ret = do_syscall (env, env->gregs[1],
1305 env->regwptr[0], env->regwptr[1],
1306 env->regwptr[2], env->regwptr[3],
1307 env->regwptr[4], env->regwptr[5],
1308 0, 0);
1309 if ((abi_ulong)ret >= (abi_ulong)(-515)) {
1310 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
1311 env->xcc |= PSR_CARRY;
1312 #else
1313 env->psr |= PSR_CARRY;
1314 #endif
1315 ret = -ret;
1316 } else {
1317 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
1318 env->xcc &= ~PSR_CARRY;
1319 #else
1320 env->psr &= ~PSR_CARRY;
1321 #endif
1322 }
1323 env->regwptr[0] = ret;
1324 /* next instruction */
1325 env->pc = env->npc;
1326 env->npc = env->npc + 4;
1327 break;
1328 case 0x83: /* flush windows */
1329 #ifdef TARGET_ABI32
1330 case 0x103:
1331 #endif
1332 flush_windows(env);
1333 /* next instruction */
1334 env->pc = env->npc;
1335 env->npc = env->npc + 4;
1336 break;
1337 #ifndef TARGET_SPARC64
1338 case TT_WIN_OVF: /* window overflow */
1339 save_window(env);
1340 break;
1341 case TT_WIN_UNF: /* window underflow */
1342 restore_window(env);
1343 break;
1344 case TT_TFAULT:
1345 case TT_DFAULT:
1346 {
1347 info.si_signo = TARGET_SIGSEGV;
1348 info.si_errno = 0;
1349 /* XXX: check env->error_code */
1350 info.si_code = TARGET_SEGV_MAPERR;
1351 info._sifields._sigfault._addr = env->mmuregs[4];
1352 queue_signal(env, info.si_signo, &info);
1353 }
1354 break;
1355 #else
1356 case TT_SPILL: /* window overflow */
1357 save_window(env);
1358 break;
1359 case TT_FILL: /* window underflow */
1360 restore_window(env);
1361 break;
1362 case TT_TFAULT:
1363 case TT_DFAULT:
1364 {
1365 info.si_signo = TARGET_SIGSEGV;
1366 info.si_errno = 0;
1367 /* XXX: check env->error_code */
1368 info.si_code = TARGET_SEGV_MAPERR;
1369 if (trapnr == TT_DFAULT)
1370 info._sifields._sigfault._addr = env->dmmuregs[4];
1371 else
1372 info._sifields._sigfault._addr = cpu_tsptr(env)->tpc;
1373 queue_signal(env, info.si_signo, &info);
1374 }
1375 break;
1376 #ifndef TARGET_ABI32
1377 case 0x16e:
1378 flush_windows(env);
1379 sparc64_get_context(env);
1380 break;
1381 case 0x16f:
1382 flush_windows(env);
1383 sparc64_set_context(env);
1384 break;
1385 #endif
1386 #endif
1387 case EXCP_INTERRUPT:
1388 /* just indicate that signals should be handled asap */
1389 break;
1390 case TT_ILL_INSN:
1391 {
1392 info.si_signo = TARGET_SIGILL;
1393 info.si_errno = 0;
1394 info.si_code = TARGET_ILL_ILLOPC;
1395 info._sifields._sigfault._addr = env->pc;
1396 queue_signal(env, info.si_signo, &info);
1397 }
1398 break;
1399 case EXCP_DEBUG:
1400 {
1401 int sig;
1402
1403 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
1404 if (sig)
1405 {
1406 info.si_signo = sig;
1407 info.si_errno = 0;
1408 info.si_code = TARGET_TRAP_BRKPT;
1409 queue_signal(env, info.si_signo, &info);
1410 }
1411 }
1412 break;
1413 default:
1414 printf ("Unhandled trap: 0x%x\n", trapnr);
1415 cpu_dump_state(cs, stderr, fprintf, 0);
1416 exit (1);
1417 }
1418 process_pending_signals (env);
1419 }
1420 }
1421
1422 #endif
1423
1424 #ifdef TARGET_PPC
1425 static inline uint64_t cpu_ppc_get_tb(CPUPPCState *env)
1426 {
1427 return cpu_get_real_ticks();
1428 }
1429
1430 uint64_t cpu_ppc_load_tbl(CPUPPCState *env)
1431 {
1432 return cpu_ppc_get_tb(env);
1433 }
1434
1435 uint32_t cpu_ppc_load_tbu(CPUPPCState *env)
1436 {
1437 return cpu_ppc_get_tb(env) >> 32;
1438 }
1439
1440 uint64_t cpu_ppc_load_atbl(CPUPPCState *env)
1441 {
1442 return cpu_ppc_get_tb(env);
1443 }
1444
1445 uint32_t cpu_ppc_load_atbu(CPUPPCState *env)
1446 {
1447 return cpu_ppc_get_tb(env) >> 32;
1448 }
1449
1450 uint32_t cpu_ppc601_load_rtcu(CPUPPCState *env)
1451 __attribute__ (( alias ("cpu_ppc_load_tbu") ));
1452
1453 uint32_t cpu_ppc601_load_rtcl(CPUPPCState *env)
1454 {
1455 return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
1456 }
1457
1458 /* XXX: to be fixed */
1459 int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, uint32_t *valp)
1460 {
1461 return -1;
1462 }
1463
1464 int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, uint32_t val)
1465 {
1466 return -1;
1467 }
1468
1469 #define EXCP_DUMP(env, fmt, ...) \
1470 do { \
1471 CPUState *cs = ENV_GET_CPU(env); \
1472 fprintf(stderr, fmt , ## __VA_ARGS__); \
1473 cpu_dump_state(cs, stderr, fprintf, 0); \
1474 qemu_log(fmt, ## __VA_ARGS__); \
1475 if (qemu_log_enabled()) { \
1476 log_cpu_state(cs, 0); \
1477 } \
1478 } while (0)
1479
1480 static int do_store_exclusive(CPUPPCState *env)
1481 {
1482 target_ulong addr;
1483 target_ulong page_addr;
1484 target_ulong val, val2 __attribute__((unused)) = 0;
1485 int flags;
1486 int segv = 0;
1487
1488 addr = env->reserve_ea;
1489 page_addr = addr & TARGET_PAGE_MASK;
1490 start_exclusive();
1491 mmap_lock();
1492 flags = page_get_flags(page_addr);
1493 if ((flags & PAGE_READ) == 0) {
1494 segv = 1;
1495 } else {
1496 int reg = env->reserve_info & 0x1f;
1497 int size = env->reserve_info >> 5;
1498 int stored = 0;
1499
1500 if (addr == env->reserve_addr) {
1501 switch (size) {
1502 case 1: segv = get_user_u8(val, addr); break;
1503 case 2: segv = get_user_u16(val, addr); break;
1504 case 4: segv = get_user_u32(val, addr); break;
1505 #if defined(TARGET_PPC64)
1506 case 8: segv = get_user_u64(val, addr); break;
1507 case 16: {
1508 segv = get_user_u64(val, addr);
1509 if (!segv) {
1510 segv = get_user_u64(val2, addr + 8);
1511 }
1512 break;
1513 }
1514 #endif
1515 default: abort();
1516 }
1517 if (!segv && val == env->reserve_val) {
1518 val = env->gpr[reg];
1519 switch (size) {
1520 case 1: segv = put_user_u8(val, addr); break;
1521 case 2: segv = put_user_u16(val, addr); break;
1522 case 4: segv = put_user_u32(val, addr); break;
1523 #if defined(TARGET_PPC64)
1524 case 8: segv = put_user_u64(val, addr); break;
1525 case 16: {
1526 if (val2 == env->reserve_val2) {
1527 if (msr_le) {
1528 val2 = val;
1529 val = env->gpr[reg+1];
1530 } else {
1531 val2 = env->gpr[reg+1];
1532 }
1533 segv = put_user_u64(val, addr);
1534 if (!segv) {
1535 segv = put_user_u64(val2, addr + 8);
1536 }
1537 }
1538 break;
1539 }
1540 #endif
1541 default: abort();
1542 }
1543 if (!segv) {
1544 stored = 1;
1545 }
1546 }
1547 }
1548 env->crf[0] = (stored << 1) | xer_so;
1549 env->reserve_addr = (target_ulong)-1;
1550 }
1551 if (!segv) {
1552 env->nip += 4;
1553 }
1554 mmap_unlock();
1555 end_exclusive();
1556 return segv;
1557 }
1558
1559 void cpu_loop(CPUPPCState *env)
1560 {
1561 CPUState *cs = CPU(ppc_env_get_cpu(env));
1562 target_siginfo_t info;
1563 int trapnr;
1564 target_ulong ret;
1565
1566 for(;;) {
1567 cpu_exec_start(cs);
1568 trapnr = cpu_ppc_exec(cs);
1569 cpu_exec_end(cs);
1570 switch(trapnr) {
1571 case POWERPC_EXCP_NONE:
1572 /* Just go on */
1573 break;
1574 case POWERPC_EXCP_CRITICAL: /* Critical input */
1575 cpu_abort(cs, "Critical interrupt while in user mode. "
1576 "Aborting\n");
1577 break;
1578 case POWERPC_EXCP_MCHECK: /* Machine check exception */
1579 cpu_abort(cs, "Machine check exception while in user mode. "
1580 "Aborting\n");
1581 break;
1582 case POWERPC_EXCP_DSI: /* Data storage exception */
1583 EXCP_DUMP(env, "Invalid data memory access: 0x" TARGET_FMT_lx "\n",
1584 env->spr[SPR_DAR]);
1585 /* XXX: check this. Seems bugged */
1586 switch (env->error_code & 0xFF000000) {
1587 case 0x40000000:
1588 info.si_signo = TARGET_SIGSEGV;
1589 info.si_errno = 0;
1590 info.si_code = TARGET_SEGV_MAPERR;
1591 break;
1592 case 0x04000000:
1593 info.si_signo = TARGET_SIGILL;
1594 info.si_errno = 0;
1595 info.si_code = TARGET_ILL_ILLADR;
1596 break;
1597 case 0x08000000:
1598 info.si_signo = TARGET_SIGSEGV;
1599 info.si_errno = 0;
1600 info.si_code = TARGET_SEGV_ACCERR;
1601 break;
1602 default:
1603 /* Let's send a regular segfault... */
1604 EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
1605 env->error_code);
1606 info.si_signo = TARGET_SIGSEGV;
1607 info.si_errno = 0;
1608 info.si_code = TARGET_SEGV_MAPERR;
1609 break;
1610 }
1611 info._sifields._sigfault._addr = env->nip;
1612 queue_signal(env, info.si_signo, &info);
1613 break;
1614 case POWERPC_EXCP_ISI: /* Instruction storage exception */
1615 EXCP_DUMP(env, "Invalid instruction fetch: 0x\n" TARGET_FMT_lx
1616 "\n", env->spr[SPR_SRR0]);
1617 /* XXX: check this */
1618 switch (env->error_code & 0xFF000000) {
1619 case 0x40000000:
1620 info.si_signo = TARGET_SIGSEGV;
1621 info.si_errno = 0;
1622 info.si_code = TARGET_SEGV_MAPERR;
1623 break;
1624 case 0x10000000:
1625 case 0x08000000:
1626 info.si_signo = TARGET_SIGSEGV;
1627 info.si_errno = 0;
1628 info.si_code = TARGET_SEGV_ACCERR;
1629 break;
1630 default:
1631 /* Let's send a regular segfault... */
1632 EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
1633 env->error_code);
1634 info.si_signo = TARGET_SIGSEGV;
1635 info.si_errno = 0;
1636 info.si_code = TARGET_SEGV_MAPERR;
1637 break;
1638 }
1639 info._sifields._sigfault._addr = env->nip - 4;
1640 queue_signal(env, info.si_signo, &info);
1641 break;
1642 case POWERPC_EXCP_EXTERNAL: /* External input */
1643 cpu_abort(cs, "External interrupt while in user mode. "
1644 "Aborting\n");
1645 break;
1646 case POWERPC_EXCP_ALIGN: /* Alignment exception */
1647 EXCP_DUMP(env, "Unaligned memory access\n");
1648 /* XXX: check this */
1649 info.si_signo = TARGET_SIGBUS;
1650 info.si_errno = 0;
1651 info.si_code = TARGET_BUS_ADRALN;
1652 info._sifields._sigfault._addr = env->nip - 4;
1653 queue_signal(env, info.si_signo, &info);
1654 break;
1655 case POWERPC_EXCP_PROGRAM: /* Program exception */
1656 /* XXX: check this */
1657 switch (env->error_code & ~0xF) {
1658 case POWERPC_EXCP_FP:
1659 EXCP_DUMP(env, "Floating point program exception\n");
1660 info.si_signo = TARGET_SIGFPE;
1661 info.si_errno = 0;
1662 switch (env->error_code & 0xF) {
1663 case POWERPC_EXCP_FP_OX:
1664 info.si_code = TARGET_FPE_FLTOVF;
1665 break;
1666 case POWERPC_EXCP_FP_UX:
1667 info.si_code = TARGET_FPE_FLTUND;
1668 break;
1669 case POWERPC_EXCP_FP_ZX:
1670 case POWERPC_EXCP_FP_VXZDZ:
1671 info.si_code = TARGET_FPE_FLTDIV;
1672 break;
1673 case POWERPC_EXCP_FP_XX:
1674 info.si_code = TARGET_FPE_FLTRES;
1675 break;
1676 case POWERPC_EXCP_FP_VXSOFT:
1677 info.si_code = TARGET_FPE_FLTINV;
1678 break;
1679 case POWERPC_EXCP_FP_VXSNAN:
1680 case POWERPC_EXCP_FP_VXISI:
1681 case POWERPC_EXCP_FP_VXIDI:
1682 case POWERPC_EXCP_FP_VXIMZ:
1683 case POWERPC_EXCP_FP_VXVC:
1684 case POWERPC_EXCP_FP_VXSQRT:
1685 case POWERPC_EXCP_FP_VXCVI:
1686 info.si_code = TARGET_FPE_FLTSUB;
1687 break;
1688 default:
1689 EXCP_DUMP(env, "Unknown floating point exception (%02x)\n",
1690 env->error_code);
1691 break;
1692 }
1693 break;
1694 case POWERPC_EXCP_INVAL:
1695 EXCP_DUMP(env, "Invalid instruction\n");
1696 info.si_signo = TARGET_SIGILL;
1697 info.si_errno = 0;
1698 switch (env->error_code & 0xF) {
1699 case POWERPC_EXCP_INVAL_INVAL:
1700 info.si_code = TARGET_ILL_ILLOPC;
1701 break;
1702 case POWERPC_EXCP_INVAL_LSWX:
1703 info.si_code = TARGET_ILL_ILLOPN;
1704 break;
1705 case POWERPC_EXCP_INVAL_SPR:
1706 info.si_code = TARGET_ILL_PRVREG;
1707 break;
1708 case POWERPC_EXCP_INVAL_FP:
1709 info.si_code = TARGET_ILL_COPROC;
1710 break;
1711 default:
1712 EXCP_DUMP(env, "Unknown invalid operation (%02x)\n",
1713 env->error_code & 0xF);
1714 info.si_code = TARGET_ILL_ILLADR;
1715 break;
1716 }
1717 break;
1718 case POWERPC_EXCP_PRIV:
1719 EXCP_DUMP(env, "Privilege violation\n");
1720 info.si_signo = TARGET_SIGILL;
1721 info.si_errno = 0;
1722 switch (env->error_code & 0xF) {
1723 case POWERPC_EXCP_PRIV_OPC:
1724 info.si_code = TARGET_ILL_PRVOPC;
1725 break;
1726 case POWERPC_EXCP_PRIV_REG:
1727 info.si_code = TARGET_ILL_PRVREG;
1728 break;
1729 default:
1730 EXCP_DUMP(env, "Unknown privilege violation (%02x)\n",
1731 env->error_code & 0xF);
1732 info.si_code = TARGET_ILL_PRVOPC;
1733 break;
1734 }
1735 break;
1736 case POWERPC_EXCP_TRAP:
1737 cpu_abort(cs, "Tried to call a TRAP\n");
1738 break;
1739 default:
1740 /* Should not happen ! */
1741 cpu_abort(cs, "Unknown program exception (%02x)\n",
1742 env->error_code);
1743 break;
1744 }
1745 info._sifields._sigfault._addr = env->nip - 4;
1746 queue_signal(env, info.si_signo, &info);
1747 break;
1748 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
1749 EXCP_DUMP(env, "No floating point allowed\n");
1750 info.si_signo = TARGET_SIGILL;
1751 info.si_errno = 0;
1752 info.si_code = TARGET_ILL_COPROC;
1753 info._sifields._sigfault._addr = env->nip - 4;
1754 queue_signal(env, info.si_signo, &info);
1755 break;
1756 case POWERPC_EXCP_SYSCALL: /* System call exception */
1757 cpu_abort(cs, "Syscall exception while in user mode. "
1758 "Aborting\n");
1759 break;
1760 case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
1761 EXCP_DUMP(env, "No APU instruction allowed\n");
1762 info.si_signo = TARGET_SIGILL;
1763 info.si_errno = 0;
1764 info.si_code = TARGET_ILL_COPROC;
1765 info._sifields._sigfault._addr = env->nip - 4;
1766 queue_signal(env, info.si_signo, &info);
1767 break;
1768 case POWERPC_EXCP_DECR: /* Decrementer exception */
1769 cpu_abort(cs, "Decrementer interrupt while in user mode. "
1770 "Aborting\n");
1771 break;
1772 case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
1773 cpu_abort(cs, "Fix interval timer interrupt while in user mode. "
1774 "Aborting\n");
1775 break;
1776 case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
1777 cpu_abort(cs, "Watchdog timer interrupt while in user mode. "
1778 "Aborting\n");
1779 break;
1780 case POWERPC_EXCP_DTLB: /* Data TLB error */
1781 cpu_abort(cs, "Data TLB exception while in user mode. "
1782 "Aborting\n");
1783 break;
1784 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
1785 cpu_abort(cs, "Instruction TLB exception while in user mode. "
1786 "Aborting\n");
1787 break;
1788 case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */
1789 EXCP_DUMP(env, "No SPE/floating-point instruction allowed\n");
1790 info.si_signo = TARGET_SIGILL;
1791 info.si_errno = 0;
1792 info.si_code = TARGET_ILL_COPROC;
1793 info._sifields._sigfault._addr = env->nip - 4;
1794 queue_signal(env, info.si_signo, &info);
1795 break;
1796 case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */
1797 cpu_abort(cs, "Embedded floating-point data IRQ not handled\n");
1798 break;
1799 case POWERPC_EXCP_EFPRI: /* Embedded floating-point round IRQ */
1800 cpu_abort(cs, "Embedded floating-point round IRQ not handled\n");
1801 break;
1802 case POWERPC_EXCP_EPERFM: /* Embedded performance monitor IRQ */
1803 cpu_abort(cs, "Performance monitor exception not handled\n");
1804 break;
1805 case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
1806 cpu_abort(cs, "Doorbell interrupt while in user mode. "
1807 "Aborting\n");
1808 break;
1809 case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
1810 cpu_abort(cs, "Doorbell critical interrupt while in user mode. "
1811 "Aborting\n");
1812 break;
1813 case POWERPC_EXCP_RESET: /* System reset exception */
1814 cpu_abort(cs, "Reset interrupt while in user mode. "
1815 "Aborting\n");
1816 break;
1817 case POWERPC_EXCP_DSEG: /* Data segment exception */
1818 cpu_abort(cs, "Data segment exception while in user mode. "
1819 "Aborting\n");
1820 break;
1821 case POWERPC_EXCP_ISEG: /* Instruction segment exception */
1822 cpu_abort(cs, "Instruction segment exception "
1823 "while in user mode. Aborting\n");
1824 break;
1825 /* PowerPC 64 with hypervisor mode support */
1826 case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
1827 cpu_abort(cs, "Hypervisor decrementer interrupt "
1828 "while in user mode. Aborting\n");
1829 break;
1830 case POWERPC_EXCP_TRACE: /* Trace exception */
1831 /* Nothing to do:
1832 * we use this exception to emulate step-by-step execution mode.
1833 */
1834 break;
1835 /* PowerPC 64 with hypervisor mode support */
1836 case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
1837 cpu_abort(cs, "Hypervisor data storage exception "
1838 "while in user mode. Aborting\n");
1839 break;
1840 case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */
1841 cpu_abort(cs, "Hypervisor instruction storage exception "
1842 "while in user mode. Aborting\n");
1843 break;
1844 case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
1845 cpu_abort(cs, "Hypervisor data segment exception "
1846 "while in user mode. Aborting\n");
1847 break;
1848 case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */
1849 cpu_abort(cs, "Hypervisor instruction segment exception "
1850 "while in user mode. Aborting\n");
1851 break;
1852 case POWERPC_EXCP_VPU: /* Vector unavailable exception */
1853 EXCP_DUMP(env, "No Altivec instructions allowed\n");
1854 info.si_signo = TARGET_SIGILL;
1855 info.si_errno = 0;
1856 info.si_code = TARGET_ILL_COPROC;
1857 info._sifields._sigfault._addr = env->nip - 4;
1858 queue_signal(env, info.si_signo, &info);
1859 break;
1860 case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */
1861 cpu_abort(cs, "Programmable interval timer interrupt "
1862 "while in user mode. Aborting\n");
1863 break;
1864 case POWERPC_EXCP_IO: /* IO error exception */
1865 cpu_abort(cs, "IO error exception while in user mode. "
1866 "Aborting\n");
1867 break;
1868 case POWERPC_EXCP_RUNM: /* Run mode exception */
1869 cpu_abort(cs, "Run mode exception while in user mode. "
1870 "Aborting\n");
1871 break;
1872 case POWERPC_EXCP_EMUL: /* Emulation trap exception */
1873 cpu_abort(cs, "Emulation trap exception not handled\n");
1874 break;
1875 case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
1876 cpu_abort(cs, "Instruction fetch TLB exception "
1877 "while in user-mode. Aborting");
1878 break;
1879 case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
1880 cpu_abort(cs, "Data load TLB exception while in user-mode. "
1881 "Aborting");
1882 break;
1883 case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
1884 cpu_abort(cs, "Data store TLB exception while in user-mode. "
1885 "Aborting");
1886 break;
1887 case POWERPC_EXCP_FPA: /* Floating-point assist exception */
1888 cpu_abort(cs, "Floating-point assist exception not handled\n");
1889 break;
1890 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
1891 cpu_abort(cs, "Instruction address breakpoint exception "
1892 "not handled\n");
1893 break;
1894 case POWERPC_EXCP_SMI: /* System management interrupt */
1895 cpu_abort(cs, "System management interrupt while in user mode. "
1896 "Aborting\n");
1897 break;
1898 case POWERPC_EXCP_THERM: /* Thermal interrupt */
1899 cpu_abort(cs, "Thermal interrupt interrupt while in user mode. "
1900 "Aborting\n");
1901 break;
1902 case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */
1903 cpu_abort(cs, "Performance monitor exception not handled\n");
1904 break;
1905 case POWERPC_EXCP_VPUA: /* Vector assist exception */
1906 cpu_abort(cs, "Vector assist exception not handled\n");
1907 break;
1908 case POWERPC_EXCP_SOFTP: /* Soft patch exception */
1909 cpu_abort(cs, "Soft patch exception not handled\n");
1910 break;
1911 case POWERPC_EXCP_MAINT: /* Maintenance exception */
1912 cpu_abort(cs, "Maintenance exception while in user mode. "
1913 "Aborting\n");
1914 break;
1915 case POWERPC_EXCP_STOP: /* stop translation */
1916 /* We did invalidate the instruction cache. Go on */
1917 break;
1918 case POWERPC_EXCP_BRANCH: /* branch instruction: */
1919 /* We just stopped because of a branch. Go on */
1920 break;
1921 case POWERPC_EXCP_SYSCALL_USER:
1922 /* system call in user-mode emulation */
1923 /* WARNING:
1924 * PPC ABI uses overflow flag in cr0 to signal an error
1925 * in syscalls.
1926 */
1927 env->crf[0] &= ~0x1;
1928 ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
1929 env->gpr[5], env->gpr[6], env->gpr[7],
1930 env->gpr[8], 0, 0);
1931 if (ret == (target_ulong)(-TARGET_QEMU_ESIGRETURN)) {
1932 /* Returning from a successful sigreturn syscall.
1933 Avoid corrupting register state. */
1934 break;
1935 }
1936 if (ret > (target_ulong)(-515)) {
1937 env->crf[0] |= 0x1;
1938 ret = -ret;
1939 }
1940 env->gpr[3] = ret;
1941 break;
1942 case POWERPC_EXCP_STCX:
1943 if (do_store_exclusive(env)) {
1944 info.si_signo = TARGET_SIGSEGV;
1945 info.si_errno = 0;
1946 info.si_code = TARGET_SEGV_MAPERR;
1947 info._sifields._sigfault._addr = env->nip;
1948 queue_signal(env, info.si_signo, &info);
1949 }
1950 break;
1951 case EXCP_DEBUG:
1952 {
1953 int sig;
1954
1955 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
1956 if (sig) {
1957 info.si_signo = sig;
1958 info.si_errno = 0;
1959 info.si_code = TARGET_TRAP_BRKPT;
1960 queue_signal(env, info.si_signo, &info);
1961 }
1962 }
1963 break;
1964 case EXCP_INTERRUPT:
1965 /* just indicate that signals should be handled asap */
1966 break;
1967 default:
1968 cpu_abort(cs, "Unknown exception 0x%d. Aborting\n", trapnr);
1969 break;
1970 }
1971 process_pending_signals(env);
1972 }
1973 }
1974 #endif
1975
1976 #ifdef TARGET_MIPS
1977
1978 # ifdef TARGET_ABI_MIPSO32
1979 # define MIPS_SYS(name, args) args,
1980 static const uint8_t mips_syscall_args[] = {
1981 MIPS_SYS(sys_syscall , 8) /* 4000 */
1982 MIPS_SYS(sys_exit , 1)
1983 MIPS_SYS(sys_fork , 0)
1984 MIPS_SYS(sys_read , 3)
1985 MIPS_SYS(sys_write , 3)
1986 MIPS_SYS(sys_open , 3) /* 4005 */
1987 MIPS_SYS(sys_close , 1)
1988 MIPS_SYS(sys_waitpid , 3)
1989 MIPS_SYS(sys_creat , 2)
1990 MIPS_SYS(sys_link , 2)
1991 MIPS_SYS(sys_unlink , 1) /* 4010 */
1992 MIPS_SYS(sys_execve , 0)
1993 MIPS_SYS(sys_chdir , 1)
1994 MIPS_SYS(sys_time , 1)
1995 MIPS_SYS(sys_mknod , 3)
1996 MIPS_SYS(sys_chmod , 2) /* 4015 */
1997 MIPS_SYS(sys_lchown , 3)
1998 MIPS_SYS(sys_ni_syscall , 0)
1999 MIPS_SYS(sys_ni_syscall , 0) /* was sys_stat */
2000 MIPS_SYS(sys_lseek , 3)
2001 MIPS_SYS(sys_getpid , 0) /* 4020 */
2002 MIPS_SYS(sys_mount , 5)
2003 MIPS_SYS(sys_umount , 1)
2004 MIPS_SYS(sys_setuid , 1)
2005 MIPS_SYS(sys_getuid , 0)
2006 MIPS_SYS(sys_stime , 1) /* 4025 */
2007 MIPS_SYS(sys_ptrace , 4)
2008 MIPS_SYS(sys_alarm , 1)
2009 MIPS_SYS(sys_ni_syscall , 0) /* was sys_fstat */
2010 MIPS_SYS(sys_pause , 0)
2011 MIPS_SYS(sys_utime , 2) /* 4030 */
2012 MIPS_SYS(sys_ni_syscall , 0)
2013 MIPS_SYS(sys_ni_syscall , 0)
2014 MIPS_SYS(sys_access , 2)
2015 MIPS_SYS(sys_nice , 1)
2016 MIPS_SYS(sys_ni_syscall , 0) /* 4035 */
2017 MIPS_SYS(sys_sync , 0)
2018 MIPS_SYS(sys_kill , 2)
2019 MIPS_SYS(sys_rename , 2)
2020 MIPS_SYS(sys_mkdir , 2)
2021 MIPS_SYS(sys_rmdir , 1) /* 4040 */
2022 MIPS_SYS(sys_dup , 1)
2023 MIPS_SYS(sys_pipe , 0)
2024 MIPS_SYS(sys_times , 1)
2025 MIPS_SYS(sys_ni_syscall , 0)
2026 MIPS_SYS(sys_brk , 1) /* 4045 */
2027 MIPS_SYS(sys_setgid , 1)
2028 MIPS_SYS(sys_getgid , 0)
2029 MIPS_SYS(sys_ni_syscall , 0) /* was signal(2) */
2030 MIPS_SYS(sys_geteuid , 0)
2031 MIPS_SYS(sys_getegid , 0) /* 4050 */
2032 MIPS_SYS(sys_acct , 0)
2033 MIPS_SYS(sys_umount2 , 2)
2034 MIPS_SYS(sys_ni_syscall , 0)
2035 MIPS_SYS(sys_ioctl , 3)
2036 MIPS_SYS(sys_fcntl , 3) /* 4055 */
2037 MIPS_SYS(sys_ni_syscall , 2)
2038 MIPS_SYS(sys_setpgid , 2)
2039 MIPS_SYS(sys_ni_syscall , 0)
2040 MIPS_SYS(sys_olduname , 1)
2041 MIPS_SYS(sys_umask , 1) /* 4060 */
2042 MIPS_SYS(sys_chroot , 1)
2043 MIPS_SYS(sys_ustat , 2)
2044 MIPS_SYS(sys_dup2 , 2)
2045 MIPS_SYS(sys_getppid , 0)
2046 MIPS_SYS(sys_getpgrp , 0) /* 4065 */
2047 MIPS_SYS(sys_setsid , 0)
2048 MIPS_SYS(sys_sigaction , 3)
2049 MIPS_SYS(sys_sgetmask , 0)
2050 MIPS_SYS(sys_ssetmask , 1)
2051 MIPS_SYS(sys_setreuid , 2) /* 4070 */
2052 MIPS_SYS(sys_setregid , 2)
2053 MIPS_SYS(sys_sigsuspend , 0)
2054 MIPS_SYS(sys_sigpending , 1)
2055 MIPS_SYS(sys_sethostname , 2)
2056 MIPS_SYS(sys_setrlimit , 2) /* 4075 */
2057 MIPS_SYS(sys_getrlimit , 2)
2058 MIPS_SYS(sys_getrusage , 2)
2059 MIPS_SYS(sys_gettimeofday, 2)
2060 MIPS_SYS(sys_settimeofday, 2)
2061 MIPS_SYS(sys_getgroups , 2) /* 4080 */
2062 MIPS_SYS(sys_setgroups , 2)
2063 MIPS_SYS(sys_ni_syscall , 0) /* old_select */
2064 MIPS_SYS(sys_symlink , 2)
2065 MIPS_SYS(sys_ni_syscall , 0) /* was sys_lstat */
2066 MIPS_SYS(sys_readlink , 3) /* 4085 */
2067 MIPS_SYS(sys_uselib , 1)
2068 MIPS_SYS(sys_swapon , 2)
2069 MIPS_SYS(sys_reboot , 3)
2070 MIPS_SYS(old_readdir , 3)
2071 MIPS_SYS(old_mmap , 6) /* 4090 */
2072 MIPS_SYS(sys_munmap , 2)
2073 MIPS_SYS(sys_truncate , 2)
2074 MIPS_SYS(sys_ftruncate , 2)
2075 MIPS_SYS(sys_fchmod , 2)
2076 MIPS_SYS(sys_fchown , 3) /* 4095 */
2077 MIPS_SYS(sys_getpriority , 2)
2078 MIPS_SYS(sys_setpriority , 3)
2079 MIPS_SYS(sys_ni_syscall , 0)
2080 MIPS_SYS(sys_statfs , 2)
2081 MIPS_SYS(sys_fstatfs , 2) /* 4100 */
2082 MIPS_SYS(sys_ni_syscall , 0) /* was ioperm(2) */
2083 MIPS_SYS(sys_socketcall , 2)
2084 MIPS_SYS(sys_syslog , 3)
2085 MIPS_SYS(sys_setitimer , 3)
2086 MIPS_SYS(sys_getitimer , 2) /* 4105 */
2087 MIPS_SYS(sys_newstat , 2)
2088 MIPS_SYS(sys_newlstat , 2)
2089 MIPS_SYS(sys_newfstat , 2)
2090 MIPS_SYS(sys_uname , 1)
2091 MIPS_SYS(sys_ni_syscall , 0) /* 4110 was iopl(2) */
2092 MIPS_SYS(sys_vhangup , 0)
2093 MIPS_SYS(sys_ni_syscall , 0) /* was sys_idle() */
2094 MIPS_SYS(sys_ni_syscall , 0) /* was sys_vm86 */
2095 MIPS_SYS(sys_wait4 , 4)
2096 MIPS_SYS(sys_swapoff , 1) /* 4115 */
2097 MIPS_SYS(sys_sysinfo , 1)
2098 MIPS_SYS(sys_ipc , 6)
2099 MIPS_SYS(sys_fsync , 1)
2100 MIPS_SYS(sys_sigreturn , 0)
2101 MIPS_SYS(sys_clone , 6) /* 4120 */
2102 MIPS_SYS(sys_setdomainname, 2)
2103 MIPS_SYS(sys_newuname , 1)
2104 MIPS_SYS(sys_ni_syscall , 0) /* sys_modify_ldt */
2105 MIPS_SYS(sys_adjtimex , 1)
2106 MIPS_SYS(sys_mprotect , 3) /* 4125 */
2107 MIPS_SYS(sys_sigprocmask , 3)
2108 MIPS_SYS(sys_ni_syscall , 0) /* was create_module */
2109 MIPS_SYS(sys_init_module , 5)
2110 MIPS_SYS(sys_delete_module, 1)
2111 MIPS_SYS(sys_ni_syscall , 0) /* 4130 was get_kernel_syms */
2112 MIPS_SYS(sys_quotactl , 0)
2113 MIPS_SYS(sys_getpgid , 1)
2114 MIPS_SYS(sys_fchdir , 1)
2115 MIPS_SYS(sys_bdflush , 2)
2116 MIPS_SYS(sys_sysfs , 3) /* 4135 */
2117 MIPS_SYS(sys_personality , 1)
2118 MIPS_SYS(sys_ni_syscall , 0) /* for afs_syscall */
2119 MIPS_SYS(sys_setfsuid , 1)
2120 MIPS_SYS(sys_setfsgid , 1)
2121 MIPS_SYS(sys_llseek , 5) /* 4140 */
2122 MIPS_SYS(sys_getdents , 3)
2123 MIPS_SYS(sys_select , 5)
2124 MIPS_SYS(sys_flock , 2)
2125 MIPS_SYS(sys_msync , 3)
2126 MIPS_SYS(sys_readv , 3) /* 4145 */
2127 MIPS_SYS(sys_writev , 3)
2128 MIPS_SYS(sys_cacheflush , 3)
2129 MIPS_SYS(sys_cachectl , 3)
2130 MIPS_SYS(sys_sysmips , 4)
2131 MIPS_SYS(sys_ni_syscall , 0) /* 4150 */
2132 MIPS_SYS(sys_getsid , 1)
2133 MIPS_SYS(sys_fdatasync , 0)
2134 MIPS_SYS(sys_sysctl , 1)
2135 MIPS_SYS(sys_mlock , 2)
2136 MIPS_SYS(sys_munlock , 2) /* 4155 */
2137 MIPS_SYS(sys_mlockall , 1)
2138 MIPS_SYS(sys_munlockall , 0)
2139 MIPS_SYS(sys_sched_setparam, 2)
2140 MIPS_SYS(sys_sched_getparam, 2)
2141 MIPS_SYS(sys_sched_setscheduler, 3) /* 4160 */
2142 MIPS_SYS(sys_sched_getscheduler, 1)
2143 MIPS_SYS(sys_sched_yield , 0)
2144 MIPS_SYS(sys_sched_get_priority_max, 1)
2145 MIPS_SYS(sys_sched_get_priority_min, 1)
2146 MIPS_SYS(sys_sched_rr_get_interval, 2) /* 4165 */
2147 MIPS_SYS(sys_nanosleep, 2)
2148 MIPS_SYS(sys_mremap , 5)
2149 MIPS_SYS(sys_accept , 3)
2150 MIPS_SYS(sys_bind , 3)
2151 MIPS_SYS(sys_connect , 3) /* 4170 */
2152 MIPS_SYS(sys_getpeername , 3)
2153 MIPS_SYS(sys_getsockname , 3)
2154 MIPS_SYS(sys_getsockopt , 5)
2155 MIPS_SYS(sys_listen , 2)
2156 MIPS_SYS(sys_recv , 4) /* 4175 */
2157 MIPS_SYS(sys_recvfrom , 6)
2158 MIPS_SYS(sys_recvmsg , 3)
2159 MIPS_SYS(sys_send , 4)
2160 MIPS_SYS(sys_sendmsg , 3)
2161 MIPS_SYS(sys_sendto , 6) /* 4180 */
2162 MIPS_SYS(sys_setsockopt , 5)
2163 MIPS_SYS(sys_shutdown , 2)
2164 MIPS_SYS(sys_socket , 3)
2165 MIPS_SYS(sys_socketpair , 4)
2166 MIPS_SYS(sys_setresuid , 3) /* 4185 */
2167 MIPS_SYS(sys_getresuid , 3)
2168 MIPS_SYS(sys_ni_syscall , 0) /* was sys_query_module */
2169 MIPS_SYS(sys_poll , 3)
2170 MIPS_SYS(sys_nfsservctl , 3)
2171 MIPS_SYS(sys_setresgid , 3) /* 4190 */
2172 MIPS_SYS(sys_getresgid , 3)
2173 MIPS_SYS(sys_prctl , 5)
2174 MIPS_SYS(sys_rt_sigreturn, 0)
2175 MIPS_SYS(sys_rt_sigaction, 4)
2176 MIPS_SYS(sys_rt_sigprocmask, 4) /* 4195 */
2177 MIPS_SYS(sys_rt_sigpending, 2)
2178 MIPS_SYS(sys_rt_sigtimedwait, 4)
2179 MIPS_SYS(sys_rt_sigqueueinfo, 3)
2180 MIPS_SYS(sys_rt_sigsuspend, 0)
2181 MIPS_SYS(sys_pread64 , 6) /* 4200 */
2182 MIPS_SYS(sys_pwrite64 , 6)
2183 MIPS_SYS(sys_chown , 3)
2184 MIPS_SYS(sys_getcwd , 2)
2185 MIPS_SYS(sys_capget , 2)
2186 MIPS_SYS(sys_capset , 2) /* 4205 */
2187 MIPS_SYS(sys_sigaltstack , 2)
2188 MIPS_SYS(sys_sendfile , 4)
2189 MIPS_SYS(sys_ni_syscall , 0)
2190 MIPS_SYS(sys_ni_syscall , 0)
2191 MIPS_SYS(sys_mmap2 , 6) /* 4210 */
2192 MIPS_SYS(sys_truncate64 , 4)
2193 MIPS_SYS(sys_ftruncate64 , 4)
2194 MIPS_SYS(sys_stat64 , 2)
2195 MIPS_SYS(sys_lstat64 , 2)
2196 MIPS_SYS(sys_fstat64 , 2) /* 4215 */
2197 MIPS_SYS(sys_pivot_root , 2)
2198 MIPS_SYS(sys_mincore , 3)
2199 MIPS_SYS(sys_madvise , 3)
2200 MIPS_SYS(sys_getdents64 , 3)
2201 MIPS_SYS(sys_fcntl64 , 3) /* 4220 */
2202 MIPS_SYS(sys_ni_syscall , 0)
2203 MIPS_SYS(sys_gettid , 0)
2204 MIPS_SYS(sys_readahead , 5)
2205 MIPS_SYS(sys_setxattr , 5)
2206 MIPS_SYS(sys_lsetxattr , 5) /* 4225 */
2207 MIPS_SYS(sys_fsetxattr , 5)
2208 MIPS_SYS(sys_getxattr , 4)
2209 MIPS_SYS(sys_lgetxattr , 4)
2210 MIPS_SYS(sys_fgetxattr , 4)
2211 MIPS_SYS(sys_listxattr , 3) /* 4230 */
2212 MIPS_SYS(sys_llistxattr , 3)
2213 MIPS_SYS(sys_flistxattr , 3)
2214 MIPS_SYS(sys_removexattr , 2)
2215 MIPS_SYS(sys_lremovexattr, 2)
2216 MIPS_SYS(sys_fremovexattr, 2) /* 4235 */
2217 MIPS_SYS(sys_tkill , 2)
2218 MIPS_SYS(sys_sendfile64 , 5)
2219 MIPS_SYS(sys_futex , 6)
2220 MIPS_SYS(sys_sched_setaffinity, 3)
2221 MIPS_SYS(sys_sched_getaffinity, 3) /* 4240 */
2222 MIPS_SYS(sys_io_setup , 2)
2223 MIPS_SYS(sys_io_destroy , 1)
2224 MIPS_SYS(sys_io_getevents, 5)
2225 MIPS_SYS(sys_io_submit , 3)
2226 MIPS_SYS(sys_io_cancel , 3) /* 4245 */
2227 MIPS_SYS(sys_exit_group , 1)
2228 MIPS_SYS(sys_lookup_dcookie, 3)
2229 MIPS_SYS(sys_epoll_create, 1)
2230 MIPS_SYS(sys_epoll_ctl , 4)
2231 MIPS_SYS(sys_epoll_wait , 3) /* 4250 */
2232 MIPS_SYS(sys_remap_file_pages, 5)
2233 MIPS_SYS(sys_set_tid_address, 1)
2234 MIPS_SYS(sys_restart_syscall, 0)
2235 MIPS_SYS(sys_fadvise64_64, 7)
2236 MIPS_SYS(sys_statfs64 , 3) /* 4255 */
2237 MIPS_SYS(sys_fstatfs64 , 2)
2238 MIPS_SYS(sys_timer_create, 3)
2239 MIPS_SYS(sys_timer_settime, 4)
2240 MIPS_SYS(sys_timer_gettime, 2)
2241 MIPS_SYS(sys_timer_getoverrun, 1) /* 4260 */
2242 MIPS_SYS(sys_timer_delete, 1)
2243 MIPS_SYS(sys_clock_settime, 2)
2244 MIPS_SYS(sys_clock_gettime, 2)
2245 MIPS_SYS(sys_clock_getres, 2)
2246 MIPS_SYS(sys_clock_nanosleep, 4) /* 4265 */
2247 MIPS_SYS(sys_tgkill , 3)
2248 MIPS_SYS(sys_utimes , 2)
2249 MIPS_SYS(sys_mbind , 4)
2250 MIPS_SYS(sys_ni_syscall , 0) /* sys_get_mempolicy */
2251 MIPS_SYS(sys_ni_syscall , 0) /* 4270 sys_set_mempolicy */
2252 MIPS_SYS(sys_mq_open , 4)
2253 MIPS_SYS(sys_mq_unlink , 1)
2254 MIPS_SYS(sys_mq_timedsend, 5)
2255 MIPS_SYS(sys_mq_timedreceive, 5)
2256 MIPS_SYS(sys_mq_notify , 2) /* 4275 */
2257 MIPS_SYS(sys_mq_getsetattr, 3)
2258 MIPS_SYS(sys_ni_syscall , 0) /* sys_vserver */
2259 MIPS_SYS(sys_waitid , 4)
2260 MIPS_SYS(sys_ni_syscall , 0) /* available, was setaltroot */
2261 MIPS_SYS(sys_add_key , 5)
2262 MIPS_SYS(sys_request_key, 4)
2263 MIPS_SYS(sys_keyctl , 5)
2264 MIPS_SYS(sys_set_thread_area, 1)
2265 MIPS_SYS(sys_inotify_init, 0)
2266 MIPS_SYS(sys_inotify_add_watch, 3) /* 4285 */
2267 MIPS_SYS(sys_inotify_rm_watch, 2)
2268 MIPS_SYS(sys_migrate_pages, 4)
2269 MIPS_SYS(sys_openat, 4)
2270 MIPS_SYS(sys_mkdirat, 3)
2271 MIPS_SYS(sys_mknodat, 4) /* 4290 */
2272 MIPS_SYS(sys_fchownat, 5)
2273 MIPS_SYS(sys_futimesat, 3)
2274 MIPS_SYS(sys_fstatat64, 4)
2275 MIPS_SYS(sys_unlinkat, 3)
2276 MIPS_SYS(sys_renameat, 4) /* 4295 */
2277 MIPS_SYS(sys_linkat, 5)
2278 MIPS_SYS(sys_symlinkat, 3)
2279 MIPS_SYS(sys_readlinkat, 4)
2280 MIPS_SYS(sys_fchmodat, 3)
2281 MIPS_SYS(sys_faccessat, 3) /* 4300 */
2282 MIPS_SYS(sys_pselect6, 6)
2283 MIPS_SYS(sys_ppoll, 5)
2284 MIPS_SYS(sys_unshare, 1)
2285 MIPS_SYS(sys_splice, 6)
2286 MIPS_SYS(sys_sync_file_range, 7) /* 4305 */
2287 MIPS_SYS(sys_tee, 4)
2288 MIPS_SYS(sys_vmsplice, 4)
2289 MIPS_SYS(sys_move_pages, 6)
2290 MIPS_SYS(sys_set_robust_list, 2)
2291 MIPS_SYS(sys_get_robust_list, 3) /* 4310 */
2292 MIPS_SYS(sys_kexec_load, 4)
2293 MIPS_SYS(sys_getcpu, 3)
2294 MIPS_SYS(sys_epoll_pwait, 6)
2295 MIPS_SYS(sys_ioprio_set, 3)
2296 MIPS_SYS(sys_ioprio_get, 2)
2297 MIPS_SYS(sys_utimensat, 4)
2298 MIPS_SYS(sys_signalfd, 3)
2299 MIPS_SYS(sys_ni_syscall, 0) /* was timerfd */
2300 MIPS_SYS(sys_eventfd, 1)
2301 MIPS_SYS(sys_fallocate, 6) /* 4320 */
2302 MIPS_SYS(sys_timerfd_create, 2)
2303 MIPS_SYS(sys_timerfd_gettime, 2)
2304 MIPS_SYS(sys_timerfd_settime, 4)
2305 MIPS_SYS(sys_signalfd4, 4)
2306 MIPS_SYS(sys_eventfd2, 2) /* 4325 */
2307 MIPS_SYS(sys_epoll_create1, 1)
2308 MIPS_SYS(sys_dup3, 3)
2309 MIPS_SYS(sys_pipe2, 2)
2310 MIPS_SYS(sys_inotify_init1, 1)
2311 MIPS_SYS(sys_preadv, 6) /* 4330 */
2312 MIPS_SYS(sys_pwritev, 6)
2313 MIPS_SYS(sys_rt_tgsigqueueinfo, 4)
2314 MIPS_SYS(sys_perf_event_open, 5)
2315 MIPS_SYS(sys_accept4, 4)
2316 MIPS_SYS(sys_recvmmsg, 5) /* 4335 */
2317 MIPS_SYS(sys_fanotify_init, 2)
2318 MIPS_SYS(sys_fanotify_mark, 6)
2319 MIPS_SYS(sys_prlimit64, 4)
2320 MIPS_SYS(sys_name_to_handle_at, 5)
2321 MIPS_SYS(sys_open_by_handle_at, 3) /* 4340 */
2322 MIPS_SYS(sys_clock_adjtime, 2)
2323 MIPS_SYS(sys_syncfs, 1)
2324 };
2325 # undef MIPS_SYS
2326 # endif /* O32 */
2327
2328 static int do_store_exclusive(CPUMIPSState *env)
2329 {
2330 target_ulong addr;
2331 target_ulong page_addr;
2332 target_ulong val;
2333 int flags;
2334 int segv = 0;
2335 int reg;
2336 int d;
2337
2338 addr = env->lladdr;
2339 page_addr = addr & TARGET_PAGE_MASK;
2340 start_exclusive();
2341 mmap_lock();
2342 flags = page_get_flags(page_addr);
2343 if ((flags & PAGE_READ) == 0) {
2344 segv = 1;
2345 } else {
2346 reg = env->llreg & 0x1f;
2347 d = (env->llreg & 0x20) != 0;
2348 if (d) {
2349 segv = get_user_s64(val, addr);
2350 } else {
2351 segv = get_user_s32(val, addr);
2352 }
2353 if (!segv) {
2354 if (val != env->llval) {
2355 env->active_tc.gpr[reg] = 0;
2356 } else {
2357 if (d) {
2358 segv = put_user_u64(env->llnewval, addr);
2359 } else {
2360 segv = put_user_u32(env->llnewval, addr);
2361 }
2362 if (!segv) {
2363 env->active_tc.gpr[reg] = 1;
2364 }
2365 }
2366 }
2367 }
2368 env->lladdr = -1;
2369 if (!segv) {
2370 env->active_tc.PC += 4;
2371 }
2372 mmap_unlock();
2373 end_exclusive();
2374 return segv;
2375 }
2376
2377 /* Break codes */
2378 enum {
2379 BRK_OVERFLOW = 6,
2380 BRK_DIVZERO = 7
2381 };
2382
2383 static int do_break(CPUMIPSState *env, target_siginfo_t *info,
2384 unsigned int code)
2385 {
2386 int ret = -1;
2387
2388 switch (code) {
2389 case BRK_OVERFLOW:
2390 case BRK_DIVZERO:
2391 info->si_signo = TARGET_SIGFPE;
2392 info->si_errno = 0;
2393 info->si_code = (code == BRK_OVERFLOW) ? FPE_INTOVF : FPE_INTDIV;
2394 queue_signal(env, info->si_signo, &*info);
2395 ret = 0;
2396 break;
2397 default:
2398 info->si_signo = TARGET_SIGTRAP;
2399 info->si_errno = 0;
2400 queue_signal(env, info->si_signo, &*info);
2401 ret = 0;
2402 break;
2403 }
2404
2405 return ret;
2406 }
2407
2408 void cpu_loop(CPUMIPSState *env)
2409 {
2410 CPUState *cs = CPU(mips_env_get_cpu(env));
2411 target_siginfo_t info;
2412 int trapnr;
2413 abi_long ret;
2414 # ifdef TARGET_ABI_MIPSO32
2415 unsigned int syscall_num;
2416 # endif
2417
2418 for(;;) {
2419 cpu_exec_start(cs);
2420 trapnr = cpu_mips_exec(cs);
2421 cpu_exec_end(cs);
2422 switch(trapnr) {
2423 case EXCP_SYSCALL:
2424 env->active_tc.PC += 4;
2425 # ifdef TARGET_ABI_MIPSO32
2426 syscall_num = env->active_tc.gpr[2] - 4000;
2427 if (syscall_num >= sizeof(mips_syscall_args)) {
2428 ret = -TARGET_ENOSYS;
2429 } else {
2430 int nb_args;
2431 abi_ulong sp_reg;
2432 abi_ulong arg5 = 0, arg6 = 0, arg7 = 0, arg8 = 0;
2433
2434 nb_args = mips_syscall_args[syscall_num];
2435 sp_reg = env->active_tc.gpr[29];
2436 switch (nb_args) {
2437 /* these arguments are taken from the stack */
2438 case 8:
2439 if ((ret = get_user_ual(arg8, sp_reg + 28)) != 0) {
2440 goto done_syscall;
2441 }
2442 case 7:
2443 if ((ret = get_user_ual(arg7, sp_reg + 24)) != 0) {
2444 goto done_syscall;
2445 }
2446 case 6:
2447 if ((ret = get_user_ual(arg6, sp_reg + 20)) != 0) {
2448 goto done_syscall;
2449 }
2450 case 5:
2451 if ((ret = get_user_ual(arg5, sp_reg + 16)) != 0) {
2452 goto done_syscall;
2453 }
2454 default:
2455 break;
2456 }
2457 ret = do_syscall(env, env->active_tc.gpr[2],
2458 env->active_tc.gpr[4],
2459 env->active_tc.gpr[5],
2460 env->active_tc.gpr[6],
2461 env->active_tc.gpr[7],
2462 arg5, arg6, arg7, arg8);
2463 }
2464 done_syscall:
2465 # else
2466 ret = do_syscall(env, env->active_tc.gpr[2],
2467 env->active_tc.gpr[4], env->active_tc.gpr[5],
2468 env->active_tc.gpr[6], env->active_tc.gpr[7],
2469 env->active_tc.gpr[8], env->active_tc.gpr[9],
2470 env->active_tc.gpr[10], env->active_tc.gpr[11]);
2471 # endif /* O32 */
2472 if (ret == -TARGET_QEMU_ESIGRETURN) {
2473 /* Returning from a successful sigreturn syscall.
2474 Avoid clobbering register state. */
2475 break;
2476 }
2477 if ((abi_ulong)ret >= (abi_ulong)-1133) {
2478 env->active_tc.gpr[7] = 1; /* error flag */
2479 ret = -ret;
2480 } else {
2481 env->active_tc.gpr[7] = 0; /* error flag */
2482 }
2483 env->active_tc.gpr[2] = ret;
2484 break;
2485 case EXCP_TLBL:
2486 case EXCP_TLBS:
2487 case EXCP_AdEL:
2488 case EXCP_AdES:
2489 info.si_signo = TARGET_SIGSEGV;
2490 info.si_errno = 0;
2491 /* XXX: check env->error_code */
2492 info.si_code = TARGET_SEGV_MAPERR;
2493 info._sifields._sigfault._addr = env->CP0_BadVAddr;
2494 queue_signal(env, info.si_signo, &info);
2495 break;
2496 case EXCP_CpU:
2497 case EXCP_RI:
2498 info.si_signo = TARGET_SIGILL;
2499 info.si_errno = 0;
2500 info.si_code = 0;
2501 queue_signal(env, info.si_signo, &info);
2502 break;
2503 case EXCP_INTERRUPT:
2504 /* just indicate that signals should be handled asap */
2505 break;
2506 case EXCP_DEBUG:
2507 {
2508 int sig;
2509
2510 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
2511 if (sig)
2512 {
2513 info.si_signo = sig;
2514 info.si_errno = 0;
2515 info.si_code = TARGET_TRAP_BRKPT;
2516 queue_signal(env, info.si_signo, &info);
2517 }
2518 }
2519 break;
2520 case EXCP_SC:
2521 if (do_store_exclusive(env)) {
2522 info.si_signo = TARGET_SIGSEGV;
2523 info.si_errno = 0;
2524 info.si_code = TARGET_SEGV_MAPERR;
2525 info._sifields._sigfault._addr = env->active_tc.PC;
2526 queue_signal(env, info.si_signo, &info);
2527 }
2528 break;
2529 case EXCP_DSPDIS:
2530 info.si_signo = TARGET_SIGILL;
2531 info.si_errno = 0;
2532 info.si_code = TARGET_ILL_ILLOPC;
2533 queue_signal(env, info.si_signo, &info);
2534 break;
2535 /* The code below was inspired by the MIPS Linux kernel trap
2536 * handling code in arch/mips/kernel/traps.c.
2537 */
2538 case EXCP_BREAK:
2539 {
2540 abi_ulong trap_instr;
2541 unsigned int code;
2542
2543 if (env->hflags & MIPS_HFLAG_M16) {
2544 if (env->insn_flags & ASE_MICROMIPS) {
2545 /* microMIPS mode */
2546 ret = get_user_u16(trap_instr, env->active_tc.PC);
2547 if (ret != 0) {
2548 goto error;
2549 }
2550
2551 if ((trap_instr >> 10) == 0x11) {
2552 /* 16-bit instruction */
2553 code = trap_instr & 0xf;
2554 } else {
2555 /* 32-bit instruction */
2556 abi_ulong instr_lo;
2557
2558 ret = get_user_u16(instr_lo,
2559 env->active_tc.PC + 2);
2560 if (ret != 0) {
2561 goto error;
2562 }
2563 trap_instr = (trap_instr << 16) | instr_lo;
2564 code = ((trap_instr >> 6) & ((1 << 20) - 1));
2565 /* Unfortunately, microMIPS also suffers from
2566 the old assembler bug... */
2567 if (code >= (1 << 10)) {
2568 code >>= 10;
2569 }
2570 }
2571 } else {
2572 /* MIPS16e mode */
2573 ret = get_user_u16(trap_instr, env->active_tc.PC);
2574 if (ret != 0) {
2575 goto error;
2576 }
2577 code = (trap_instr >> 6) & 0x3f;
2578 }
2579 } else {
2580 ret = get_user_u32(trap_instr, env->active_tc.PC);
2581 if (ret != 0) {
2582 goto error;
2583 }
2584
2585 /* As described in the original Linux kernel code, the
2586 * below checks on 'code' are to work around an old
2587 * assembly bug.
2588 */
2589 code = ((trap_instr >> 6) & ((1 << 20) - 1));
2590 if (code >= (1 << 10)) {
2591 code >>= 10;
2592 }
2593 }
2594
2595 if (do_break(env, &info, code) != 0) {
2596 goto error;
2597 }
2598 }
2599 break;
2600 case EXCP_TRAP:
2601 {
2602 abi_ulong trap_instr;
2603 unsigned int code = 0;
2604
2605 if (env->hflags & MIPS_HFLAG_M16) {
2606 /* microMIPS mode */
2607 abi_ulong instr[2];
2608
2609 ret = get_user_u16(instr[0], env->active_tc.PC) ||
2610 get_user_u16(instr[1], env->active_tc.PC + 2);
2611
2612 trap_instr = (instr[0] << 16) | instr[1];
2613 } else {
2614 ret = get_user_u32(trap_instr, env->active_tc.PC);
2615 }
2616
2617 if (ret != 0) {
2618 goto error;
2619 }
2620
2621 /* The immediate versions don't provide a code. */
2622 if (!(trap_instr & 0xFC000000)) {
2623 if (env->hflags & MIPS_HFLAG_M16) {
2624 /* microMIPS mode */
2625 code = ((trap_instr >> 12) & ((1 << 4) - 1));
2626 } else {
2627 code = ((trap_instr >> 6) & ((1 << 10) - 1));
2628 }
2629 }
2630
2631 if (do_break(env, &info, code) != 0) {
2632 goto error;
2633 }
2634 }
2635 break;
2636 default:
2637 error:
2638 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
2639 trapnr);
2640 cpu_dump_state(cs, stderr, fprintf, 0);
2641 abort();
2642 }
2643 process_pending_signals(env);
2644 }
2645 }
2646 #endif
2647
2648 #ifdef TARGET_OPENRISC
2649
2650 void cpu_loop(CPUOpenRISCState *env)
2651 {
2652 CPUState *cs = CPU(openrisc_env_get_cpu(env));
2653 int trapnr, gdbsig;
2654
2655 for (;;) {
2656 cpu_exec_start(cs);
2657 trapnr = cpu_openrisc_exec(cs);
2658 cpu_exec_end(cs);
2659 gdbsig = 0;
2660
2661 switch (trapnr) {
2662 case EXCP_RESET:
2663 qemu_log("\nReset request, exit, pc is %#x\n", env->pc);
2664 exit(1);
2665 break;
2666 case EXCP_BUSERR:
2667 qemu_log("\nBus error, exit, pc is %#x\n", env->pc);
2668 gdbsig = TARGET_SIGBUS;
2669 break;
2670 case EXCP_DPF:
2671 case EXCP_IPF:
2672 cpu_dump_state(cs, stderr, fprintf, 0);
2673 gdbsig = TARGET_SIGSEGV;
2674 break;
2675 case EXCP_TICK:
2676 qemu_log("\nTick time interrupt pc is %#x\n", env->pc);
2677 break;
2678 case EXCP_ALIGN:
2679 qemu_log("\nAlignment pc is %#x\n", env->pc);
2680 gdbsig = TARGET_SIGBUS;
2681 break;
2682 case EXCP_ILLEGAL:
2683 qemu_log("\nIllegal instructionpc is %#x\n", env->pc);
2684 gdbsig = TARGET_SIGILL;
2685 break;
2686 case EXCP_INT:
2687 qemu_log("\nExternal interruptpc is %#x\n", env->pc);
2688 break;
2689 case EXCP_DTLBMISS:
2690 case EXCP_ITLBMISS:
2691 qemu_log("\nTLB miss\n");
2692 break;
2693 case EXCP_RANGE:
2694 qemu_log("\nRange\n");
2695 gdbsig = TARGET_SIGSEGV;
2696 break;
2697 case EXCP_SYSCALL:
2698 env->pc += 4; /* 0xc00; */
2699 env->gpr[11] = do_syscall(env,
2700 env->gpr[11], /* return value */
2701 env->gpr[3], /* r3 - r7 are params */
2702 env->gpr[4],
2703 env->gpr[5],
2704 env->gpr[6],
2705 env->gpr[7],
2706 env->gpr[8], 0, 0);
2707 break;
2708 case EXCP_FPE:
2709 qemu_log("\nFloating point error\n");
2710 break;
2711 case EXCP_TRAP:
2712 qemu_log("\nTrap\n");
2713 gdbsig = TARGET_SIGTRAP;
2714 break;
2715 case EXCP_NR:
2716 qemu_log("\nNR\n");
2717 break;
2718 default:
2719 qemu_log("\nqemu: unhandled CPU exception %#x - aborting\n",
2720 trapnr);
2721 cpu_dump_state(cs, stderr, fprintf, 0);
2722 gdbsig = TARGET_SIGILL;
2723 break;
2724 }
2725 if (gdbsig) {
2726 gdb_handlesig(cs, gdbsig);
2727 if (gdbsig != TARGET_SIGTRAP) {
2728 exit(1);
2729 }
2730 }
2731
2732 process_pending_signals(env);
2733 }
2734 }
2735
2736 #endif /* TARGET_OPENRISC */
2737
2738 #ifdef TARGET_SH4
2739 void cpu_loop(CPUSH4State *env)
2740 {
2741 CPUState *cs = CPU(sh_env_get_cpu(env));
2742 int trapnr, ret;
2743 target_siginfo_t info;
2744
2745 while (1) {
2746 cpu_exec_start(cs);
2747 trapnr = cpu_sh4_exec(cs);
2748 cpu_exec_end(cs);
2749
2750 switch (trapnr) {
2751 case 0x160:
2752 env->pc += 2;
2753 ret = do_syscall(env,
2754 env->gregs[3],
2755 env->gregs[4],
2756 env->gregs[5],
2757 env->gregs[6],
2758 env->gregs[7],
2759 env->gregs[0],
2760 env->gregs[1],
2761 0, 0);
2762 env->gregs[0] = ret;
2763 break;
2764 case EXCP_INTERRUPT:
2765 /* just indicate that signals should be handled asap */
2766 break;
2767 case EXCP_DEBUG:
2768 {
2769 int sig;
2770
2771 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
2772 if (sig)
2773 {
2774 info.si_signo = sig;
2775 info.si_errno = 0;
2776 info.si_code = TARGET_TRAP_BRKPT;
2777 queue_signal(env, info.si_signo, &info);
2778 }
2779 }
2780 break;
2781 case 0xa0:
2782 case 0xc0:
2783 info.si_signo = TARGET_SIGSEGV;
2784 info.si_errno = 0;
2785 info.si_code = TARGET_SEGV_MAPERR;
2786 info._sifields._sigfault._addr = env->tea;
2787 queue_signal(env, info.si_signo, &info);
2788 break;
2789
2790 default:
2791 printf ("Unhandled trap: 0x%x\n", trapnr);
2792 cpu_dump_state(cs, stderr, fprintf, 0);
2793 exit (1);
2794 }
2795 process_pending_signals (env);
2796 }
2797 }
2798 #endif
2799
2800 #ifdef TARGET_CRIS
2801 void cpu_loop(CPUCRISState *env)
2802 {
2803 CPUState *cs = CPU(cris_env_get_cpu(env));
2804 int trapnr, ret;
2805 target_siginfo_t info;
2806
2807 while (1) {
2808 cpu_exec_start(cs);
2809 trapnr = cpu_cris_exec(cs);
2810 cpu_exec_end(cs);
2811 switch (trapnr) {
2812 case 0xaa:
2813 {
2814 info.si_signo = TARGET_SIGSEGV;
2815 info.si_errno = 0;
2816 /* XXX: check env->error_code */
2817 info.si_code = TARGET_SEGV_MAPERR;
2818 info._sifields._sigfault._addr = env->pregs[PR_EDA];
2819 queue_signal(env, info.si_signo, &info);
2820 }
2821 break;
2822 case EXCP_INTERRUPT:
2823 /* just indicate that signals should be handled asap */
2824 break;
2825 case EXCP_BREAK:
2826 ret = do_syscall(env,
2827 env->regs[9],
2828 env->regs[10],
2829 env->regs[11],
2830 env->regs[12],
2831 env->regs[13],
2832 env->pregs[7],
2833 env->pregs[11],
2834 0, 0);
2835 env->regs[10] = ret;
2836 break;
2837 case EXCP_DEBUG:
2838 {
2839 int sig;
2840
2841 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
2842 if (sig)
2843 {
2844 info.si_signo = sig;
2845 info.si_errno = 0;
2846 info.si_code = TARGET_TRAP_BRKPT;
2847 queue_signal(env, info.si_signo, &info);
2848 }
2849 }
2850 break;
2851 default:
2852 printf ("Unhandled trap: 0x%x\n", trapnr);
2853 cpu_dump_state(cs, stderr, fprintf, 0);
2854 exit (1);
2855 }
2856 process_pending_signals (env);
2857 }
2858 }
2859 #endif
2860
2861 #ifdef TARGET_MICROBLAZE
2862 void cpu_loop(CPUMBState *env)
2863 {
2864 CPUState *cs = CPU(mb_env_get_cpu(env));
2865 int trapnr, ret;
2866 target_siginfo_t info;
2867
2868 while (1) {
2869 cpu_exec_start(cs);
2870 trapnr = cpu_mb_exec(cs);
2871 cpu_exec_end(cs);
2872 switch (trapnr) {
2873 case 0xaa:
2874 {
2875 info.si_signo = TARGET_SIGSEGV;
2876 info.si_errno = 0;
2877 /* XXX: check env->error_code */
2878 info.si_code = TARGET_SEGV_MAPERR;
2879 info._sifields._sigfault._addr = 0;
2880 queue_signal(env, info.si_signo, &info);
2881 }
2882 break;
2883 case EXCP_INTERRUPT:
2884 /* just indicate that signals should be handled asap */
2885 break;
2886 case EXCP_BREAK:
2887 /* Return address is 4 bytes after the call. */
2888 env->regs[14] += 4;
2889 env->sregs[SR_PC] = env->regs[14];
2890 ret = do_syscall(env,
2891 env->regs[12],
2892 env->regs[5],
2893 env->regs[6],
2894 env->regs[7],
2895 env->regs[8],
2896 env->regs[9],
2897 env->regs[10],
2898 0, 0);
2899 env->regs[3] = ret;
2900 break;
2901 case EXCP_HW_EXCP:
2902 env->regs[17] = env->sregs[SR_PC] + 4;
2903 if (env->iflags & D_FLAG) {
2904 env->sregs[SR_ESR] |= 1 << 12;
2905 env->sregs[SR_PC] -= 4;
2906 /* FIXME: if branch was immed, replay the imm as well. */
2907 }
2908
2909 env->iflags &= ~(IMM_FLAG | D_FLAG);
2910
2911 switch (env->sregs[SR_ESR] & 31) {
2912 case ESR_EC_DIVZERO:
2913 info.si_signo = TARGET_SIGFPE;
2914 info.si_errno = 0;
2915 info.si_code = TARGET_FPE_FLTDIV;
2916 info._sifields._sigfault._addr = 0;
2917 queue_signal(env, info.si_signo, &info);
2918 break;
2919 case ESR_EC_FPU:
2920 info.si_signo = TARGET_SIGFPE;
2921 info.si_errno = 0;
2922 if (env->sregs[SR_FSR] & FSR_IO) {
2923 info.si_code = TARGET_FPE_FLTINV;
2924 }
2925 if (env->sregs[SR_FSR] & FSR_DZ) {
2926 info.si_code = TARGET_FPE_FLTDIV;
2927 }
2928 info._sifields._sigfault._addr = 0;
2929 queue_signal(env, info.si_signo, &info);
2930 break;
2931 default:
2932 printf ("Unhandled hw-exception: 0x%x\n",
2933 env->sregs[SR_ESR] & ESR_EC_MASK);
2934 cpu_dump_state(cs, stderr, fprintf, 0);
2935 exit (1);
2936 break;
2937 }
2938 break;
2939 case EXCP_DEBUG:
2940 {
2941 int sig;
2942
2943 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
2944 if (sig)
2945 {
2946 info.si_signo = sig;
2947 info.si_errno = 0;
2948 info.si_code = TARGET_TRAP_BRKPT;
2949 queue_signal(env, info.si_signo, &info);
2950 }
2951 }
2952 break;
2953 default:
2954 printf ("Unhandled trap: 0x%x\n", trapnr);
2955 cpu_dump_state(cs, stderr, fprintf, 0);
2956 exit (1);
2957 }
2958 process_pending_signals (env);
2959 }
2960 }
2961 #endif
2962
2963 #ifdef TARGET_M68K
2964
2965 void cpu_loop(CPUM68KState *env)
2966 {
2967 CPUState *cs = CPU(m68k_env_get_cpu(env));
2968 int trapnr;
2969 unsigned int n;
2970 target_siginfo_t info;
2971 TaskState *ts = cs->opaque;
2972
2973 for(;;) {
2974 cpu_exec_start(cs);
2975 trapnr = cpu_m68k_exec(cs);
2976 cpu_exec_end(cs);
2977 switch(trapnr) {
2978 case EXCP_ILLEGAL:
2979 {
2980 if (ts->sim_syscalls) {
2981 uint16_t nr;
2982 get_user_u16(nr, env->pc + 2);
2983 env->pc += 4;
2984 do_m68k_simcall(env, nr);
2985 } else {
2986 goto do_sigill;
2987 }
2988 }
2989 break;
2990 case EXCP_HALT_INSN:
2991 /* Semihosing syscall. */
2992 env->pc += 4;
2993 do_m68k_semihosting(env, env->dregs[0]);
2994 break;
2995 case EXCP_LINEA:
2996 case EXCP_LINEF:
2997 case EXCP_UNSUPPORTED:
2998 do_sigill:
2999 info.si_signo = TARGET_SIGILL;
3000 info.si_errno = 0;
3001 info.si_code = TARGET_ILL_ILLOPN;
3002 info._sifields._sigfault._addr = env->pc;
3003 queue_signal(env, info.si_signo, &info);
3004 break;
3005 case EXCP_TRAP0:
3006 {
3007 ts->sim_syscalls = 0;
3008 n = env->dregs[0];
3009 env->pc += 2;
3010 env->dregs[0] = do_syscall(env,
3011 n,
3012 env->dregs[1],
3013 env->dregs[2],
3014 env->dregs[3],
3015 env->dregs[4],
3016 env->dregs[5],
3017 env->aregs[0],
3018 0, 0);
3019 }
3020 break;
3021 case EXCP_INTERRUPT:
3022 /* just indicate that signals should be handled asap */
3023 break;
3024 case EXCP_ACCESS:
3025 {
3026 info.si_signo = TARGET_SIGSEGV;
3027 info.si_errno = 0;
3028 /* XXX: check env->error_code */
3029 info.si_code = TARGET_SEGV_MAPERR;
3030 info._sifields._sigfault._addr = env->mmu.ar;
3031 queue_signal(env, info.si_signo, &info);
3032 }
3033 break;
3034 case EXCP_DEBUG:
3035 {
3036 int sig;
3037
3038 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
3039 if (sig)
3040 {
3041 info.si_signo = sig;
3042 info.si_errno = 0;
3043 info.si_code = TARGET_TRAP_BRKPT;
3044 queue_signal(env, info.si_signo, &info);
3045 }
3046 }
3047 break;
3048 default:
3049 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
3050 trapnr);
3051 cpu_dump_state(cs, stderr, fprintf, 0);
3052 abort();
3053 }
3054 process_pending_signals(env);
3055 }
3056 }
3057 #endif /* TARGET_M68K */
3058
3059 #ifdef TARGET_ALPHA
3060 static void do_store_exclusive(CPUAlphaState *env, int reg, int quad)
3061 {
3062 target_ulong addr, val, tmp;
3063 target_siginfo_t info;
3064 int ret = 0;
3065
3066 addr = env->lock_addr;
3067 tmp = env->lock_st_addr;
3068 env->lock_addr = -1;
3069 env->lock_st_addr = 0;
3070
3071 start_exclusive();
3072 mmap_lock();
3073
3074 if (addr == tmp) {
3075 if (quad ? get_user_s64(val, addr) : get_user_s32(val, addr)) {
3076 goto do_sigsegv;
3077 }
3078
3079 if (val == env->lock_value) {
3080 tmp = env->ir[reg];
3081 if (quad ? put_user_u64(tmp, addr) : put_user_u32(tmp, addr)) {
3082 goto do_sigsegv;
3083 }
3084 ret = 1;
3085 }
3086 }
3087 env->ir[reg] = ret;
3088 env->pc += 4;
3089
3090 mmap_unlock();
3091 end_exclusive();
3092 return;
3093
3094 do_sigsegv:
3095 mmap_unlock();
3096 end_exclusive();
3097
3098 info.si_signo = TARGET_SIGSEGV;
3099 info.si_errno = 0;
3100 info.si_code = TARGET_SEGV_MAPERR;
3101 info._sifields._sigfault._addr = addr;
3102 queue_signal(env, TARGET_SIGSEGV, &info);
3103 }
3104
3105 void cpu_loop(CPUAlphaState *env)
3106 {
3107 CPUState *cs = CPU(alpha_env_get_cpu(env));
3108 int trapnr;
3109 target_siginfo_t info;
3110 abi_long sysret;
3111
3112 while (1) {
3113 cpu_exec_start(cs);
3114 trapnr = cpu_alpha_exec(cs);
3115 cpu_exec_end(cs);
3116
3117 /* All of the traps imply a transition through PALcode, which
3118 implies an REI instruction has been executed. Which means
3119 that the intr_flag should be cleared. */
3120 env->intr_flag = 0;
3121
3122 switch (trapnr) {
3123 case EXCP_RESET:
3124 fprintf(stderr, "Reset requested. Exit\n");
3125 exit(1);
3126 break;
3127 case EXCP_MCHK:
3128 fprintf(stderr, "Machine check exception. Exit\n");
3129 exit(1);
3130 break;
3131 case EXCP_SMP_INTERRUPT:
3132 case EXCP_CLK_INTERRUPT:
3133 case EXCP_DEV_INTERRUPT:
3134 fprintf(stderr, "External interrupt. Exit\n");
3135 exit(1);
3136 break;
3137 case EXCP_MMFAULT:
3138 env->lock_addr = -1;
3139 info.si_signo = TARGET_SIGSEGV;
3140 info.si_errno = 0;
3141 info.si_code = (page_get_flags(env->trap_arg0) & PAGE_VALID
3142 ? TARGET_SEGV_ACCERR : TARGET_SEGV_MAPERR);
3143 info._sifields._sigfault._addr = env->trap_arg0;
3144 queue_signal(env, info.si_signo, &info);
3145 break;
3146 case EXCP_UNALIGN:
3147 env->lock_addr = -1;
3148 info.si_signo = TARGET_SIGBUS;
3149 info.si_errno = 0;
3150 info.si_code = TARGET_BUS_ADRALN;
3151 info._sifields._sigfault._addr = env->trap_arg0;
3152 queue_signal(env, info.si_signo, &info);
3153 break;
3154 case EXCP_OPCDEC:
3155 do_sigill:
3156 env->lock_addr = -1;
3157 info.si_signo = TARGET_SIGILL;
3158 info.si_errno = 0;
3159 info.si_code = TARGET_ILL_ILLOPC;
3160 info._sifields._sigfault._addr = env->pc;
3161 queue_signal(env, info.si_signo, &info);
3162 break;
3163 case EXCP_ARITH:
3164 env->lock_addr = -1;
3165 info.si_signo = TARGET_SIGFPE;
3166 info.si_errno = 0;
3167 info.si_code = TARGET_FPE_FLTINV;
3168 info._sifields._sigfault._addr = env->pc;
3169 queue_signal(env, info.si_signo, &info);
3170 break;
3171 case EXCP_FEN:
3172 /* No-op. Linux simply re-enables the FPU. */
3173 break;
3174 case EXCP_CALL_PAL:
3175 env->lock_addr = -1;
3176 switch (env->error_code) {
3177 case 0x80:
3178 /* BPT */
3179 info.si_signo = TARGET_SIGTRAP;
3180 info.si_errno = 0;
3181 info.si_code = TARGET_TRAP_BRKPT;
3182 info._sifields._sigfault._addr = env->pc;
3183 queue_signal(env, info.si_signo, &info);
3184 break;
3185 case 0x81:
3186 /* BUGCHK */
3187 info.si_signo = TARGET_SIGTRAP;
3188 info.si_errno = 0;
3189 info.si_code = 0;
3190 info._sifields._sigfault._addr = env->pc;
3191 queue_signal(env, info.si_signo, &info);
3192 break;
3193 case 0x83:
3194 /* CALLSYS */
3195 trapnr = env->ir[IR_V0];
3196 sysret = do_syscall(env, trapnr,
3197 env->ir[IR_A0], env->ir[IR_A1],
3198 env->ir[IR_A2], env->ir[IR_A3],
3199 env->ir[IR_A4], env->ir[IR_A5],
3200 0, 0);
3201 if (trapnr == TARGET_NR_sigreturn
3202 || trapnr == TARGET_NR_rt_sigreturn) {
3203 break;
3204 }
3205 /* Syscall writes 0 to V0 to bypass error check, similar
3206 to how this is handled internal to Linux kernel.
3207 (Ab)use trapnr temporarily as boolean indicating error. */
3208 trapnr = (env->ir[IR_V0] != 0 && sysret < 0);
3209 env->ir[IR_V0] = (trapnr ? -sysret : sysret);
3210 env->ir[IR_A3] = trapnr;
3211 break;
3212 case 0x86:
3213 /* IMB */
3214 /* ??? We can probably elide the code using page_unprotect
3215 that is checking for self-modifying code. Instead we
3216 could simply call tb_flush here. Until we work out the
3217 changes required to turn off the extra write protection,
3218 this can be a no-op. */
3219 break;
3220 case 0x9E:
3221 /* RDUNIQUE */
3222 /* Handled in the translator for usermode. */
3223 abort();
3224 case 0x9F:
3225 /* WRUNIQUE */
3226 /* Handled in the translator for usermode. */
3227 abort();
3228 case 0xAA:
3229 /* GENTRAP */
3230 info.si_signo = TARGET_SIGFPE;
3231 switch (env->ir[IR_A0]) {
3232 case TARGET_GEN_INTOVF:
3233 info.si_code = TARGET_FPE_INTOVF;
3234 break;
3235 case TARGET_GEN_INTDIV:
3236 info.si_code = TARGET_FPE_INTDIV;
3237 break;
3238 case TARGET_GEN_FLTOVF:
3239 info.si_code = TARGET_FPE_FLTOVF;
3240 break;
3241 case TARGET_GEN_FLTUND:
3242 info.si_code = TARGET_FPE_FLTUND;
3243 break;
3244 case TARGET_GEN_FLTINV:
3245 info.si_code = TARGET_FPE_FLTINV;
3246 break;
3247 case TARGET_GEN_FLTINE:
3248 info.si_code = TARGET_FPE_FLTRES;
3249 break;
3250 case TARGET_GEN_ROPRAND:
3251 info.si_code = 0;
3252 break;
3253 default:
3254 info.si_signo = TARGET_SIGTRAP;
3255 info.si_code = 0;
3256 break;
3257 }
3258 info.si_errno = 0;
3259 info._sifields._sigfault._addr = env->pc;
3260 queue_signal(env, info.si_signo, &info);
3261 break;
3262 default:
3263 goto do_sigill;
3264 }
3265 break;
3266 case EXCP_DEBUG:
3267 info.si_signo = gdb_handlesig(cs, TARGET_SIGTRAP);
3268 if (info.si_signo) {
3269 env->lock_addr = -1;
3270 info.si_errno = 0;
3271 info.si_code = TARGET_TRAP_BRKPT;
3272 queue_signal(env, info.si_signo, &info);
3273 }
3274 break;
3275 case EXCP_STL_C:
3276 case EXCP_STQ_C:
3277 do_store_exclusive(env, env->error_code, trapnr - EXCP_STL_C);
3278 break;
3279 case EXCP_INTERRUPT:
3280 /* Just indicate that signals should be handled asap. */
3281 break;
3282 default:
3283 printf ("Unhandled trap: 0x%x\n", trapnr);
3284 cpu_dump_state(cs, stderr, fprintf, 0);
3285 exit (1);
3286 }
3287 process_pending_signals (env);
3288 }
3289 }
3290 #endif /* TARGET_ALPHA */
3291
3292 #ifdef TARGET_S390X
3293 void cpu_loop(CPUS390XState *env)
3294 {
3295 CPUState *cs = CPU(s390_env_get_cpu(env));
3296 int trapnr, n, sig;
3297 target_siginfo_t info;
3298 target_ulong addr;
3299
3300 while (1) {
3301 cpu_exec_start(cs);
3302 trapnr = cpu_s390x_exec(cs);
3303 cpu_exec_end(cs);
3304 switch (trapnr) {
3305 case EXCP_INTERRUPT:
3306 /* Just indicate that signals should be handled asap. */
3307 break;
3308
3309 case EXCP_SVC:
3310 n = env->int_svc_code;
3311 if (!n) {
3312 /* syscalls > 255 */
3313 n = env->regs[1];
3314 }
3315 env->psw.addr += env->int_svc_ilen;
3316 env->regs[2] = do_syscall(env, n, env->regs[2], env->regs[3],
3317 env->regs[4], env->regs[5],
3318 env->regs[6], env->regs[7], 0, 0);
3319 break;
3320
3321 case EXCP_DEBUG:
3322 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
3323 if (sig) {
3324 n = TARGET_TRAP_BRKPT;
3325 goto do_signal_pc;
3326 }
3327 break;
3328 case EXCP_PGM:
3329 n = env->int_pgm_code;
3330 switch (n) {
3331 case PGM_OPERATION:
3332 case PGM_PRIVILEGED:
3333 sig = TARGET_SIGILL;
3334 n = TARGET_ILL_ILLOPC;
3335 goto do_signal_pc;
3336 case PGM_PROTECTION:
3337 case PGM_ADDRESSING:
3338 sig = TARGET_SIGSEGV;
3339 /* XXX: check env->error_code */
3340 n = TARGET_SEGV_MAPERR;
3341 addr = env->__excp_addr;
3342 goto do_signal;
3343 case PGM_EXECUTE:
3344 case PGM_SPECIFICATION:
3345 case PGM_SPECIAL_OP:
3346 case PGM_OPERAND:
3347 do_sigill_opn:
3348 sig = TARGET_SIGILL;
3349 n = TARGET_ILL_ILLOPN;
3350 goto do_signal_pc;
3351
3352 case PGM_FIXPT_OVERFLOW:
3353 sig = TARGET_SIGFPE;
3354 n = TARGET_FPE_INTOVF;
3355 goto do_signal_pc;
3356 case PGM_FIXPT_DIVIDE:
3357 sig = TARGET_SIGFPE;
3358 n = TARGET_FPE_INTDIV;
3359 goto do_signal_pc;
3360
3361 case PGM_DATA:
3362 n = (env->fpc >> 8) & 0xff;
3363 if (n == 0xff) {
3364 /* compare-and-trap */
3365 goto do_sigill_opn;
3366 } else {
3367 /* An IEEE exception, simulated or otherwise. */
3368 if (n & 0x80) {
3369 n = TARGET_FPE_FLTINV;
3370 } else if (n & 0x40) {
3371 n = TARGET_FPE_FLTDIV;
3372 } else if (n & 0x20) {
3373 n = TARGET_FPE_FLTOVF;
3374 } else if (n & 0x10) {
3375 n = TARGET_FPE_FLTUND;
3376 } else if (n & 0x08) {
3377 n = TARGET_FPE_FLTRES;
3378 } else {
3379 /* ??? Quantum exception; BFP, DFP error. */
3380 goto do_sigill_opn;
3381 }
3382 sig = TARGET_SIGFPE;
3383 goto do_signal_pc;
3384 }
3385
3386 default:
3387 fprintf(stderr, "Unhandled program exception: %#x\n", n);
3388 cpu_dump_state(cs, stderr, fprintf, 0);
3389 exit(1);
3390 }
3391 break;
3392
3393 do_signal_pc:
3394 addr = env->psw.addr;
3395 do_signal:
3396 info.si_signo = sig;
3397 info.si_errno = 0;
3398 info.si_code = n;
3399 info._sifields._sigfault._addr = addr;
3400 queue_signal(env, info.si_signo, &info);
3401 break;
3402
3403 default:
3404 fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr);
3405 cpu_dump_state(cs, stderr, fprintf, 0);
3406 exit(1);
3407 }
3408 process_pending_signals (env);
3409 }
3410 }
3411
3412 #endif /* TARGET_S390X */
3413
3414 THREAD CPUState *thread_cpu;
3415
3416 void task_settid(TaskState *ts)
3417 {
3418 if (ts->ts_tid == 0) {
3419 ts->ts_tid = (pid_t)syscall(SYS_gettid);
3420 }
3421 }
3422
3423 void stop_all_tasks(void)
3424 {
3425 /*
3426 * We trust that when using NPTL, start_exclusive()
3427 * handles thread stopping correctly.
3428 */
3429 start_exclusive();
3430 }
3431
3432 /* Assumes contents are already zeroed. */
3433 void init_task_state(TaskState *ts)
3434 {
3435 int i;
3436
3437 ts->used = 1;
3438 ts->first_free = ts->sigqueue_table;
3439 for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) {
3440 ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1];
3441 }
3442 ts->sigqueue_table[i].next = NULL;
3443 }
3444
3445 CPUArchState *cpu_copy(CPUArchState *env)
3446 {
3447 CPUState *cpu = ENV_GET_CPU(env);
3448 CPUState *new_cpu = cpu_init(cpu_model);
3449 CPUArchState *new_env = new_cpu->env_ptr;
3450 CPUBreakpoint *bp;
3451 CPUWatchpoint *wp;
3452
3453 /* Reset non arch specific state */
3454 cpu_reset(new_cpu);
3455
3456 memcpy(new_env, env, sizeof(CPUArchState));
3457
3458 /* Clone all break/watchpoints.
3459 Note: Once we support ptrace with hw-debug register access, make sure
3460 BP_CPU break/watchpoints are handled correctly on clone. */
3461 QTAILQ_INIT(&new_cpu->breakpoints);
3462 QTAILQ_INIT(&new_cpu->watchpoints);
3463 QTAILQ_FOREACH(bp, &cpu->breakpoints, entry) {
3464 cpu_breakpoint_insert(new_cpu, bp->pc, bp->flags, NULL);
3465 }
3466 QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) {
3467 cpu_watchpoint_insert(new_cpu, wp->vaddr, wp->len, wp->flags, NULL);
3468 }
3469
3470 return new_env;
3471 }
3472
3473 static void handle_arg_help(const char *arg)
3474 {
3475 usage();
3476 }
3477
3478 static void handle_arg_log(const char *arg)
3479 {
3480 int mask;
3481
3482 mask = qemu_str_to_log_mask(arg);
3483 if (!mask) {
3484 qemu_print_log_usage(stdout);
3485 exit(1);
3486 }
3487 qemu_set_log(mask);
3488 }
3489
3490 static void handle_arg_log_filename(const char *arg)
3491 {
3492 qemu_set_log_filename(arg);
3493 }
3494
3495 static void handle_arg_set_env(const char *arg)
3496 {
3497 char *r, *p, *token;
3498 r = p = strdup(arg);
3499 while ((token = strsep(&p, ",")) != NULL) {
3500 if (envlist_setenv(envlist, token) != 0) {
3501 usage();
3502 }
3503 }
3504 free(r);
3505 }
3506
3507 static void handle_arg_unset_env(const char *arg)
3508 {
3509 char *r, *p, *token;
3510 r = p = strdup(arg);
3511 while ((token = strsep(&p, ",")) != NULL) {
3512 if (envlist_unsetenv(envlist, token) != 0) {
3513 usage();
3514 }
3515 }
3516 free(r);
3517 }
3518
3519 static void handle_arg_argv0(const char *arg)
3520 {
3521 argv0 = strdup(arg);
3522 }
3523
3524 static void handle_arg_stack_size(const char *arg)
3525 {
3526 char *p;
3527 guest_stack_size = strtoul(arg, &p, 0);
3528 if (guest_stack_size == 0) {
3529 usage();
3530 }
3531
3532 if (*p == 'M') {
3533 guest_stack_size *= 1024 * 1024;
3534 } else if (*p == 'k' || *p == 'K') {
3535 guest_stack_size *= 1024;
3536 }
3537 }
3538
3539 static void handle_arg_ld_prefix(const char *arg)
3540 {
3541 interp_prefix = strdup(arg);
3542 }
3543
3544 static void handle_arg_pagesize(const char *arg)
3545 {
3546 qemu_host_page_size = atoi(arg);
3547 if (qemu_host_page_size == 0 ||
3548 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
3549 fprintf(stderr, "page size must be a power of two\n");
3550 exit(1);
3551 }
3552 }
3553
3554 static void handle_arg_randseed(const char *arg)
3555 {
3556 unsigned long long seed;
3557
3558 if (parse_uint_full(arg, &seed, 0) != 0 || seed > UINT_MAX) {
3559 fprintf(stderr, "Invalid seed number: %s\n", arg);
3560 exit(1);
3561 }
3562 srand(seed);
3563 }
3564
3565 static void handle_arg_gdb(const char *arg)
3566 {
3567 gdbstub_port = atoi(arg);
3568 }
3569
3570 static void handle_arg_uname(const char *arg)
3571 {
3572 qemu_uname_release = strdup(arg);
3573 }
3574
3575 static void handle_arg_cpu(const char *arg)
3576 {
3577 cpu_model = strdup(arg);
3578 if (cpu_model == NULL || is_help_option(cpu_model)) {
3579 /* XXX: implement xxx_cpu_list for targets that still miss it */
3580 #if defined(cpu_list)
3581 cpu_list(stdout, &fprintf);
3582 #endif
3583 exit(1);
3584 }
3585 }
3586
3587 #if defined(CONFIG_USE_GUEST_BASE)
3588 static void handle_arg_guest_base(const char *arg)
3589 {
3590 guest_base = strtol(arg, NULL, 0);
3591 have_guest_base = 1;
3592 }
3593
3594 static void handle_arg_reserved_va(const char *arg)
3595 {
3596 char *p;
3597 int shift = 0;
3598 reserved_va = strtoul(arg, &p, 0);
3599 switch (*p) {
3600 case 'k':
3601 case 'K':
3602 shift = 10;
3603 break;
3604 case 'M':
3605 shift = 20;
3606 break;
3607 case 'G':
3608 shift = 30;
3609 break;
3610 }
3611 if (shift) {
3612 unsigned long unshifted = reserved_va;
3613 p++;
3614 reserved_va <<= shift;
3615 if (((reserved_va >> shift) != unshifted)
3616 #if HOST_LONG_BITS > TARGET_VIRT_ADDR_SPACE_BITS
3617 || (reserved_va > (1ul << TARGET_VIRT_ADDR_SPACE_BITS))
3618 #endif
3619 ) {
3620 fprintf(stderr, "Reserved virtual address too big\n");
3621 exit(1);
3622 }
3623 }
3624 if (*p) {
3625 fprintf(stderr, "Unrecognised -R size suffix '%s'\n", p);
3626 exit(1);
3627 }
3628 }
3629 #endif
3630
3631 static void handle_arg_singlestep(const char *arg)
3632 {
3633 singlestep = 1;
3634 }
3635
3636 static void handle_arg_strace(const char *arg)
3637 {
3638 do_strace = 1;
3639 }
3640
3641 static void handle_arg_version(const char *arg)
3642 {
3643 printf("qemu-" TARGET_NAME " version " QEMU_VERSION QEMU_PKGVERSION
3644 ", Copyright (c) 2003-2008 Fabrice Bellard\n");
3645 exit(0);
3646 }
3647
3648 struct qemu_argument {
3649 const char *argv;
3650 const char *env;
3651 bool has_arg;
3652 void (*handle_opt)(const char *arg);
3653 const char *example;
3654 const char *help;
3655 };
3656
3657 static const struct qemu_argument arg_table[] = {
3658 {"h", "", false, handle_arg_help,
3659 "", "print this help"},
3660 {"g", "QEMU_GDB", true, handle_arg_gdb,
3661 "port", "wait gdb connection to 'port'"},
3662 {"L", "QEMU_LD_PREFIX", true, handle_arg_ld_prefix,
3663 "path", "set the elf interpreter prefix to 'path'"},
3664 {"s", "QEMU_STACK_SIZE", true, handle_arg_stack_size,
3665 "size", "set the stack size to 'size' bytes"},
3666 {"cpu", "QEMU_CPU", true, handle_arg_cpu,
3667 "model", "select CPU (-cpu help for list)"},
3668 {"E", "QEMU_SET_ENV", true, handle_arg_set_env,
3669 "var=value", "sets targets environment variable (see below)"},
3670 {"U", "QEMU_UNSET_ENV", true, handle_arg_unset_env,
3671 "var", "unsets targets environment variable (see below)"},
3672 {"0", "QEMU_ARGV0", true, handle_arg_argv0,
3673 "argv0", "forces target process argv[0] to be 'argv0'"},
3674 {"r", "QEMU_UNAME", true, handle_arg_uname,
3675 "uname", "set qemu uname release string to 'uname'"},
3676 #if defined(CONFIG_USE_GUEST_BASE)
3677 {"B", "QEMU_GUEST_BASE", true, handle_arg_guest_base,
3678 "address", "set guest_base address to 'address'"},
3679 {"R", "QEMU_RESERVED_VA", true, handle_arg_reserved_va,
3680 "size", "reserve 'size' bytes for guest virtual address space"},
3681 #endif
3682 {"d", "QEMU_LOG", true, handle_arg_log,
3683 "item[,...]", "enable logging of specified items "
3684 "(use '-d help' for a list of items)"},
3685 {"D", "QEMU_LOG_FILENAME", true, handle_arg_log_filename,
3686 "logfile", "write logs to 'logfile' (default stderr)"},
3687 {"p", "QEMU_PAGESIZE", true, handle_arg_pagesize,
3688 "pagesize", "set the host page size to 'pagesize'"},
3689 {"singlestep", "QEMU_SINGLESTEP", false, handle_arg_singlestep,
3690 "", "run in singlestep mode"},
3691 {"strace", "QEMU_STRACE", false, handle_arg_strace,
3692 "", "log system calls"},
3693 {"seed", "QEMU_RAND_SEED", true, handle_arg_randseed,
3694 "", "Seed for pseudo-random number generator"},
3695 {"version", "QEMU_VERSION", false, handle_arg_version,
3696 "", "display version information and exit"},
3697 {NULL, NULL, false, NULL, NULL, NULL}
3698 };
3699
3700 static void usage(void)
3701 {
3702 const struct qemu_argument *arginfo;
3703 int maxarglen;
3704 int maxenvlen;
3705
3706 printf("usage: qemu-" TARGET_NAME " [options] program [arguments...]\n"
3707 "Linux CPU emulator (compiled for " TARGET_NAME " emulation)\n"
3708 "\n"
3709 "Options and associated environment variables:\n"
3710 "\n");
3711
3712 /* Calculate column widths. We must always have at least enough space
3713 * for the column header.
3714 */
3715 maxarglen = strlen("Argument");
3716 maxenvlen = strlen("Env-variable");
3717
3718 for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
3719 int arglen = strlen(arginfo->argv);
3720 if (arginfo->has_arg) {
3721 arglen += strlen(arginfo->example) + 1;
3722 }
3723 if (strlen(arginfo->env) > maxenvlen) {
3724 maxenvlen = strlen(arginfo->env);
3725 }
3726 if (arglen > maxarglen) {
3727 maxarglen = arglen;
3728 }
3729 }
3730
3731 printf("%-*s %-*s Description\n", maxarglen+1, "Argument",
3732 maxenvlen, "Env-variable");
3733
3734 for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
3735 if (arginfo->has_arg) {
3736 printf("-%s %-*s %-*s %s\n", arginfo->argv,
3737 (int)(maxarglen - strlen(arginfo->argv) - 1),
3738 arginfo->example, maxenvlen, arginfo->env, arginfo->help);
3739 } else {
3740 printf("-%-*s %-*s %s\n", maxarglen, arginfo->argv,
3741 maxenvlen, arginfo->env,
3742 arginfo->help);
3743 }
3744 }
3745
3746 printf("\n"
3747 "Defaults:\n"
3748 "QEMU_LD_PREFIX = %s\n"
3749 "QEMU_STACK_SIZE = %ld byte\n",
3750 interp_prefix,
3751 guest_stack_size);
3752
3753 printf("\n"
3754 "You can use -E and -U options or the QEMU_SET_ENV and\n"
3755 "QEMU_UNSET_ENV environment variables to set and unset\n"
3756 "environment variables for the target process.\n"
3757 "It is possible to provide several variables by separating them\n"
3758 "by commas in getsubopt(3) style. Additionally it is possible to\n"
3759 "provide the -E and -U options multiple times.\n"
3760 "The following lines are equivalent:\n"
3761 " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
3762 " -E var1=val2,var2=val2 -U LD_PRELOAD,LD_DEBUG\n"
3763 " QEMU_SET_ENV=var1=val2,var2=val2 QEMU_UNSET_ENV=LD_PRELOAD,LD_DEBUG\n"
3764 "Note that if you provide several changes to a single variable\n"
3765 "the last change will stay in effect.\n");
3766
3767 exit(1);
3768 }
3769
3770 static int parse_args(int argc, char **argv)
3771 {
3772 const char *r;
3773 int optind;
3774 const struct qemu_argument *arginfo;
3775
3776 for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
3777 if (arginfo->env == NULL) {
3778 continue;
3779 }
3780
3781 r = getenv(arginfo->env);
3782 if (r != NULL) {
3783 arginfo->handle_opt(r);
3784 }
3785 }
3786
3787 optind = 1;
3788 for (;;) {
3789 if (optind >= argc) {
3790 break;
3791 }
3792 r = argv[optind];
3793 if (r[0] != '-') {
3794 break;
3795 }
3796 optind++;
3797 r++;
3798 if (!strcmp(r, "-")) {
3799 break;
3800 }
3801
3802 for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
3803 if (!strcmp(r, arginfo->argv)) {
3804 if (arginfo->has_arg) {
3805 if (optind >= argc) {
3806 usage();
3807 }
3808 arginfo->handle_opt(argv[optind]);
3809 optind++;
3810 } else {
3811 arginfo->handle_opt(NULL);
3812 }
3813 break;
3814 }
3815 }
3816
3817 /* no option matched the current argv */
3818 if (arginfo->handle_opt == NULL) {
3819 usage();
3820 }
3821 }
3822
3823 if (optind >= argc) {
3824 usage();
3825 }
3826
3827 filename = argv[optind];
3828 exec_path = argv[optind];
3829
3830 return optind;
3831 }
3832
3833 int main(int argc, char **argv, char **envp)
3834 {
3835 struct target_pt_regs regs1, *regs = &regs1;
3836 struct image_info info1, *info = &info1;
3837 struct linux_binprm bprm;
3838 TaskState *ts;
3839 CPUArchState *env;
3840 CPUState *cpu;
3841 int optind;
3842 char **target_environ, **wrk;
3843 char **target_argv;
3844 int target_argc;
3845 int i;
3846 int ret;
3847 int execfd;
3848
3849 module_call_init(MODULE_INIT_QOM);
3850
3851 if ((envlist = envlist_create()) == NULL) {
3852 (void) fprintf(stderr, "Unable to allocate envlist\n");
3853 exit(1);
3854 }
3855
3856 /* add current environment into the list */
3857 for (wrk = environ; *wrk != NULL; wrk++) {
3858 (void) envlist_setenv(envlist, *wrk);
3859 }
3860
3861 /* Read the stack limit from the kernel. If it's "unlimited",
3862 then we can do little else besides use the default. */
3863 {
3864 struct rlimit lim;
3865 if (getrlimit(RLIMIT_STACK, &lim) == 0
3866 && lim.rlim_cur != RLIM_INFINITY
3867 && lim.rlim_cur == (target_long)lim.rlim_cur) {
3868 guest_stack_size = lim.rlim_cur;
3869 }
3870 }
3871
3872 cpu_model = NULL;
3873 #if defined(cpudef_setup)
3874 cpudef_setup(); /* parse cpu definitions in target config file (TBD) */
3875 #endif
3876
3877 srand(time(NULL));
3878
3879 optind = parse_args(argc, argv);
3880
3881 /* Zero out regs */
3882 memset(regs, 0, sizeof(struct target_pt_regs));
3883
3884 /* Zero out image_info */
3885 memset(info, 0, sizeof(struct image_info));
3886
3887 memset(&bprm, 0, sizeof (bprm));
3888
3889 /* Scan interp_prefix dir for replacement files. */
3890 init_paths(interp_prefix);
3891
3892 init_qemu_uname_release();
3893
3894 if (cpu_model == NULL) {
3895 #if defined(TARGET_I386)
3896 #ifdef TARGET_X86_64
3897 cpu_model = "qemu64";
3898 #else
3899 cpu_model = "qemu32";
3900 #endif
3901 #elif defined(TARGET_ARM)
3902 cpu_model = "any";
3903 #elif defined(TARGET_UNICORE32)
3904 cpu_model = "any";
3905 #elif defined(TARGET_M68K)
3906 cpu_model = "any";
3907 #elif defined(TARGET_SPARC)
3908 #ifdef TARGET_SPARC64
3909 cpu_model = "TI UltraSparc II";
3910 #else
3911 cpu_model = "Fujitsu MB86904";
3912 #endif
3913 #elif defined(TARGET_MIPS)
3914 #if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64)
3915 cpu_model = "5KEf";
3916 #else
3917 cpu_model = "24Kf";
3918 #endif
3919 #elif defined TARGET_OPENRISC
3920 cpu_model = "or1200";
3921 #elif defined(TARGET_PPC)
3922 # ifdef TARGET_PPC64
3923 cpu_model = "POWER7";
3924 # else
3925 cpu_model = "750";
3926 # endif
3927 #elif defined TARGET_SH4
3928 cpu_model = TYPE_SH7785_CPU;
3929 #else
3930 cpu_model = "any";
3931 #endif
3932 }
3933 tcg_exec_init(0);
3934 /* NOTE: we need to init the CPU at this stage to get
3935 qemu_host_page_size */
3936 cpu = cpu_init(cpu_model);
3937 if (!cpu) {
3938 fprintf(stderr, "Unable to find CPU definition\n");
3939 exit(1);
3940 }
3941 env = cpu->env_ptr;
3942 cpu_reset(cpu);
3943
3944 thread_cpu = cpu;
3945
3946 if (getenv("QEMU_STRACE")) {
3947 do_strace = 1;
3948 }
3949
3950 if (getenv("QEMU_RAND_SEED")) {
3951 handle_arg_randseed(getenv("QEMU_RAND_SEED"));
3952 }
3953
3954 target_environ = envlist_to_environ(envlist, NULL);
3955 envlist_free(envlist);
3956
3957 #if defined(CONFIG_USE_GUEST_BASE)
3958 /*
3959 * Now that page sizes are configured in cpu_init() we can do
3960 * proper page alignment for guest_base.
3961 */
3962 guest_base = HOST_PAGE_ALIGN(guest_base);
3963
3964 if (reserved_va || have_guest_base) {
3965 guest_base = init_guest_space(guest_base, reserved_va, 0,
3966 have_guest_base);
3967 if (guest_base == (unsigned long)-1) {
3968 fprintf(stderr, "Unable to reserve 0x%lx bytes of virtual address "
3969 "space for use as guest address space (check your virtual "
3970 "memory ulimit setting or reserve less using -R option)\n",
3971 reserved_va);
3972 exit(1);
3973 }
3974
3975 if (reserved_va) {
3976 mmap_next_start = reserved_va;
3977 }
3978 }
3979 #endif /* CONFIG_USE_GUEST_BASE */
3980
3981 /*
3982 * Read in mmap_min_addr kernel parameter. This value is used
3983 * When loading the ELF image to determine whether guest_base
3984 * is needed. It is also used in mmap_find_vma.
3985 */
3986 {
3987 FILE *fp;
3988
3989 if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) {
3990 unsigned long tmp;
3991 if (fscanf(fp, "%lu", &tmp) == 1) {
3992 mmap_min_addr = tmp;
3993 qemu_log("host mmap_min_addr=0x%lx\n", mmap_min_addr);
3994 }
3995 fclose(fp);
3996 }
3997 }
3998
3999 /*
4000 * Prepare copy of argv vector for target.
4001 */
4002 target_argc = argc - optind;
4003 target_argv = calloc(target_argc + 1, sizeof (char *));
4004 if (target_argv == NULL) {
4005 (void) fprintf(stderr, "Unable to allocate memory for target_argv\n");
4006 exit(1);
4007 }
4008
4009 /*
4010 * If argv0 is specified (using '-0' switch) we replace
4011 * argv[0] pointer with the given one.
4012 */
4013 i = 0;
4014 if (argv0 != NULL) {
4015 target_argv[i++] = strdup(argv0);
4016 }
4017 for (; i < target_argc; i++) {
4018 target_argv[i] = strdup(argv[optind + i]);
4019 }
4020 target_argv[target_argc] = NULL;
4021
4022 ts = g_malloc0 (sizeof(TaskState));
4023 init_task_state(ts);
4024 /* build Task State */
4025 ts->info = info;
4026 ts->bprm = &bprm;
4027 cpu->opaque = ts;
4028 task_settid(ts);
4029
4030 execfd = qemu_getauxval(AT_EXECFD);
4031 if (execfd == 0) {
4032 execfd = open(filename, O_RDONLY);
4033 if (execfd < 0) {
4034 printf("Error while loading %s: %s\n", filename, strerror(errno));
4035 _exit(1);
4036 }
4037 }
4038
4039 ret = loader_exec(execfd, filename, target_argv, target_environ, regs,
4040 info, &bprm);
4041 if (ret != 0) {
4042 printf("Error while loading %s: %s\n", filename, strerror(-ret));
4043 _exit(1);
4044 }
4045
4046 for (wrk = target_environ; *wrk; wrk++) {
4047 free(*wrk);
4048 }
4049
4050 free(target_environ);
4051
4052 if (qemu_log_enabled()) {
4053 #if defined(CONFIG_USE_GUEST_BASE)
4054 qemu_log("guest_base 0x%lx\n", guest_base);
4055 #endif
4056 log_page_dump();
4057
4058 qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
4059 qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code);
4060 qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n",
4061 info->start_code);
4062 qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n",
4063 info->start_data);
4064 qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data);
4065 qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n",
4066 info->start_stack);
4067 qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
4068 qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
4069 }
4070
4071 target_set_brk(info->brk);
4072 syscall_init();
4073 signal_init();
4074
4075 #if defined(CONFIG_USE_GUEST_BASE)
4076 /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay
4077 generating the prologue until now so that the prologue can take
4078 the real value of GUEST_BASE into account. */
4079 tcg_prologue_init(&tcg_ctx);
4080 #endif
4081
4082 #if defined(TARGET_I386)
4083 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
4084 env->hflags |= HF_PE_MASK | HF_CPL_MASK;
4085 if (env->features[FEAT_1_EDX] & CPUID_SSE) {
4086 env->cr[4] |= CR4_OSFXSR_MASK;
4087 env->hflags |= HF_OSFXSR_MASK;
4088 }
4089 #ifndef TARGET_ABI32
4090 /* enable 64 bit mode if possible */
4091 if (!(env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM)) {
4092 fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
4093 exit(1);
4094 }
4095 env->cr[4] |= CR4_PAE_MASK;
4096 env->efer |= MSR_EFER_LMA | MSR_EFER_LME;
4097 env->hflags |= HF_LMA_MASK;
4098 #endif
4099
4100 /* flags setup : we activate the IRQs by default as in user mode */
4101 env->eflags |= IF_MASK;
4102
4103 /* linux register setup */
4104 #ifndef TARGET_ABI32
4105 env->regs[R_EAX] = regs->rax;
4106 env->regs[R_EBX] = regs->rbx;
4107 env->regs[R_ECX] = regs->rcx;
4108 env->regs[R_EDX] = regs->rdx;
4109 env->regs[R_ESI] = regs->rsi;
4110 env->regs[R_EDI] = regs->rdi;
4111 env->regs[R_EBP] = regs->rbp;
4112 env->regs[R_ESP] = regs->rsp;
4113 env->eip = regs->rip;
4114 #else
4115 env->regs[R_EAX] = regs->eax;
4116 env->regs[R_EBX] = regs->ebx;
4117 env->regs[R_ECX] = regs->ecx;
4118 env->regs[R_EDX] = regs->edx;
4119 env->regs[R_ESI] = regs->esi;
4120 env->regs[R_EDI] = regs->edi;
4121 env->regs[R_EBP] = regs->ebp;
4122 env->regs[R_ESP] = regs->esp;
4123 env->eip = regs->eip;
4124 #endif
4125
4126 /* linux interrupt setup */
4127 #ifndef TARGET_ABI32
4128 env->idt.limit = 511;
4129 #else
4130 env->idt.limit = 255;
4131 #endif
4132 env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1),
4133 PROT_READ|PROT_WRITE,
4134 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
4135 idt_table = g2h(env->idt.base);
4136 set_idt(0, 0);
4137 set_idt(1, 0);
4138 set_idt(2, 0);
4139 set_idt(3, 3);
4140 set_idt(4, 3);
4141 set_idt(5, 0);
4142 set_idt(6, 0);
4143 set_idt(7, 0);
4144 set_idt(8, 0);
4145 set_idt(9, 0);
4146 set_idt(10, 0);
4147 set_idt(11, 0);
4148 set_idt(12, 0);
4149 set_idt(13, 0);
4150 set_idt(14, 0);
4151 set_idt(15, 0);
4152 set_idt(16, 0);
4153 set_idt(17, 0);
4154 set_idt(18, 0);
4155 set_idt(19, 0);
4156 set_idt(0x80, 3);
4157
4158 /* linux segment setup */
4159 {
4160 uint64_t *gdt_table;
4161 env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES,
4162 PROT_READ|PROT_WRITE,
4163 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
4164 env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1;
4165 gdt_table = g2h(env->gdt.base);
4166 #ifdef TARGET_ABI32
4167 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
4168 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
4169 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
4170 #else
4171 /* 64 bit code segment */
4172 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
4173 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
4174 DESC_L_MASK |
4175 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
4176 #endif
4177 write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
4178 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
4179 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
4180 }
4181 cpu_x86_load_seg(env, R_CS, __USER_CS);
4182 cpu_x86_load_seg(env, R_SS, __USER_DS);
4183 #ifdef TARGET_ABI32
4184 cpu_x86_load_seg(env, R_DS, __USER_DS);
4185 cpu_x86_load_seg(env, R_ES, __USER_DS);
4186 cpu_x86_load_seg(env, R_FS, __USER_DS);
4187 cpu_x86_load_seg(env, R_GS, __USER_DS);
4188 /* This hack makes Wine work... */
4189 env->segs[R_FS].selector = 0;
4190 #else
4191 cpu_x86_load_seg(env, R_DS, 0);
4192 cpu_x86_load_seg(env, R_ES, 0);
4193 cpu_x86_load_seg(env, R_FS, 0);
4194 cpu_x86_load_seg(env, R_GS, 0);
4195 #endif
4196 #elif defined(TARGET_AARCH64)
4197 {
4198 int i;
4199
4200 if (!(arm_feature(env, ARM_FEATURE_AARCH64))) {
4201 fprintf(stderr,
4202 "The selected ARM CPU does not support 64 bit mode\n");
4203 exit(1);
4204 }
4205
4206 for (i = 0; i < 31; i++) {
4207 env->xregs[i] = regs->regs[i];
4208 }
4209 env->pc = regs->pc;
4210 env->xregs[31] = regs->sp;
4211 }
4212 #elif defined(TARGET_ARM)
4213 {
4214 int i;
4215 cpsr_write(env, regs->uregs[16], 0xffffffff);
4216 for(i = 0; i < 16; i++) {
4217 env->regs[i] = regs->uregs[i];
4218 }
4219 /* Enable BE8. */
4220 if (EF_ARM_EABI_VERSION(info->elf_flags) >= EF_ARM_EABI_VER4
4221 && (info->elf_flags & EF_ARM_BE8)) {
4222 env->bswap_code = 1;
4223 }
4224 }
4225 #elif defined(TARGET_UNICORE32)
4226 {
4227 int i;
4228 cpu_asr_write(env, regs->uregs[32], 0xffffffff);
4229 for (i = 0; i < 32; i++) {
4230 env->regs[i] = regs->uregs[i];
4231 }
4232 }
4233 #elif defined(TARGET_SPARC)
4234 {
4235 int i;
4236 env->pc = regs->pc;
4237 env->npc = regs->npc;
4238 env->y = regs->y;
4239 for(i = 0; i < 8; i++)
4240 env->gregs[i] = regs->u_regs[i];
4241 for(i = 0; i < 8; i++)
4242 env->regwptr[i] = regs->u_regs[i + 8];
4243 }
4244 #elif defined(TARGET_PPC)
4245 {
4246 int i;
4247
4248 #if defined(TARGET_PPC64)
4249 #if defined(TARGET_ABI32)
4250 env->msr &= ~((target_ulong)1 << MSR_SF);
4251 #else
4252 env->msr |= (target_ulong)1 << MSR_SF;
4253 #endif
4254 #endif
4255 env->nip = regs->nip;
4256 for(i = 0; i < 32; i++) {
4257 env->gpr[i] = regs->gpr[i];
4258 }
4259 }
4260 #elif defined(TARGET_M68K)
4261 {
4262 env->pc = regs->pc;
4263 env->dregs[0] = regs->d0;
4264 env->dregs[1] = regs->d1;
4265 env->dregs[2] = regs->d2;
4266 env->dregs[3] = regs->d3;
4267 env->dregs[4] = regs->d4;
4268 env->dregs[5] = regs->d5;
4269 env->dregs[6] = regs->d6;
4270 env->dregs[7] = regs->d7;
4271 env->aregs[0] = regs->a0;
4272 env->aregs[1] = regs->a1;
4273 env->aregs[2] = regs->a2;
4274 env->aregs[3] = regs->a3;
4275 env->aregs[4] = regs->a4;
4276 env->aregs[5] = regs->a5;
4277 env->aregs[6] = regs->a6;
4278 env->aregs[7] = regs->usp;
4279 env->sr = regs->sr;
4280 ts->sim_syscalls = 1;
4281 }
4282 #elif defined(TARGET_MICROBLAZE)
4283 {
4284 env->regs[0] = regs->r0;
4285 env->regs[1] = regs->r1;
4286 env->regs[2] = regs->r2;
4287 env->regs[3] = regs->r3;
4288 env->regs[4] = regs->r4;
4289 env->regs[5] = regs->r5;
4290 env->regs[6] = regs->r6;
4291 env->regs[7] = regs->r7;
4292 env->regs[8] = regs->r8;
4293 env->regs[9] = regs->r9;
4294 env->regs[10] = regs->r10;
4295 env->regs[11] = regs->r11;
4296 env->regs[12] = regs->r12;
4297 env->regs[13] = regs->r13;
4298 env->regs[14] = regs->r14;
4299 env->regs[15] = regs->r15;
4300 env->regs[16] = regs->r16;
4301 env->regs[17] = regs->r17;
4302 env->regs[18] = regs->r18;
4303 env->regs[19] = regs->r19;
4304 env->regs[20] = regs->r20;
4305 env->regs[21] = regs->r21;
4306 env->regs[22] = regs->r22;
4307 env->regs[23] = regs->r23;
4308 env->regs[24] = regs->r24;
4309 env->regs[25] = regs->r25;
4310 env->regs[26] = regs->r26;
4311 env->regs[27] = regs->r27;
4312 env->regs[28] = regs->r28;
4313 env->regs[29] = regs->r29;
4314 env->regs[30] = regs->r30;
4315 env->regs[31] = regs->r31;
4316 env->sregs[SR_PC] = regs->pc;
4317 }
4318 #elif defined(TARGET_MIPS)
4319 {
4320 int i;
4321
4322 for(i = 0; i < 32; i++) {
4323 env->active_tc.gpr[i] = regs->regs[i];
4324 }
4325 env->active_tc.PC = regs->cp0_epc & ~(target_ulong)1;
4326 if (regs->cp0_epc & 1) {
4327 env->hflags |= MIPS_HFLAG_M16;
4328 }
4329 }
4330 #elif defined(TARGET_OPENRISC)
4331 {
4332 int i;
4333
4334 for (i = 0; i < 32; i++) {
4335 env->gpr[i] = regs->gpr[i];
4336 }
4337
4338 env->sr = regs->sr;
4339 env->pc = regs->pc;
4340 }
4341 #elif defined(TARGET_SH4)
4342 {
4343 int i;
4344
4345 for(i = 0; i < 16; i++) {
4346 env->gregs[i] = regs->regs[i];
4347 }
4348 env->pc = regs->pc;
4349 }
4350 #elif defined(TARGET_ALPHA)
4351 {
4352 int i;
4353
4354 for(i = 0; i < 28; i++) {
4355 env->ir[i] = ((abi_ulong *)regs)[i];
4356 }
4357 env->ir[IR_SP] = regs->usp;
4358 env->pc = regs->pc;
4359 }
4360 #elif defined(TARGET_CRIS)
4361 {
4362 env->regs[0] = regs->r0;
4363 env->regs[1] = regs->r1;
4364 env->regs[2] = regs->r2;
4365 env->regs[3] = regs->r3;
4366 env->regs[4] = regs->r4;
4367 env->regs[5] = regs->r5;
4368 env->regs[6] = regs->r6;
4369 env->regs[7] = regs->r7;
4370 env->regs[8] = regs->r8;
4371 env->regs[9] = regs->r9;
4372 env->regs[10] = regs->r10;
4373 env->regs[11] = regs->r11;
4374 env->regs[12] = regs->r12;
4375 env->regs[13] = regs->r13;
4376 env->regs[14] = info->start_stack;
4377 env->regs[15] = regs->acr;
4378 env->pc = regs->erp;
4379 }
4380 #elif defined(TARGET_S390X)
4381 {
4382 int i;
4383 for (i = 0; i < 16; i++) {
4384 env->regs[i] = regs->gprs[i];
4385 }
4386 env->psw.mask = regs->psw.mask;
4387 env->psw.addr = regs->psw.addr;
4388 }
4389 #else
4390 #error unsupported target CPU
4391 #endif
4392
4393 #if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32)
4394 ts->stack_base = info->start_stack;
4395 ts->heap_base = info->brk;
4396 /* This will be filled in on the first SYS_HEAPINFO call. */
4397 ts->heap_limit = 0;
4398 #endif
4399
4400 if (gdbstub_port) {
4401 if (gdbserver_start(gdbstub_port) < 0) {
4402 fprintf(stderr, "qemu: could not open gdbserver on port %d\n",
4403 gdbstub_port);
4404 exit(1);
4405 }
4406 gdb_handlesig(cpu, 0);
4407 }
4408 cpu_loop(env);
4409 /* never exits */
4410 return 0;
4411 }
AR7 emulation for QEMU