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Clarify -soundhw documentation as to avoid hda confusion
[qemu-kvm/fedora.git] / linux-user / main.c
blob66be107611acde5fd7deb58fa17f0b18cdc66a01
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, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20 #include <stdlib.h>
21 #include <stdio.h>
22 #include <stdarg.h>
23 #include <string.h>
24 #include <errno.h>
25 #include <unistd.h>
26 #include <sys/mman.h>
27
28 #include "qemu.h"
29 #include "qemu-common.h"
30 /* For tb_lock */
31 #include "exec-all.h"
32
33 #define DEBUG_LOGFILE "/tmp/qemu.log"
34
35 static const char *interp_prefix = CONFIG_QEMU_PREFIX;
36 const char *qemu_uname_release = CONFIG_UNAME_RELEASE;
37
38 #if defined(__i386__) && !defined(CONFIG_STATIC)
39 /* Force usage of an ELF interpreter even if it is an ELF shared
40 object ! */
41 const char interp[] __attribute__((section(".interp"))) = "/lib/ld-linux.so.2";
42 #endif
43
44 /* for recent libc, we add these dummy symbols which are not declared
45 when generating a linked object (bug in ld ?) */
46 #if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined(CONFIG_STATIC)
47 asm(".globl __preinit_array_start\n"
48 ".globl __preinit_array_end\n"
49 ".globl __init_array_start\n"
50 ".globl __init_array_end\n"
51 ".globl __fini_array_start\n"
52 ".globl __fini_array_end\n"
53 ".section \".rodata\"\n"
54 "__preinit_array_start:\n"
55 "__preinit_array_end:\n"
56 "__init_array_start:\n"
57 "__init_array_end:\n"
58 "__fini_array_start:\n"
59 "__fini_array_end:\n"
60 ".long 0\n"
61 ".previous\n");
62 #endif
63
64 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
65 we allocate a bigger stack. Need a better solution, for example
66 by remapping the process stack directly at the right place */
67 unsigned long x86_stack_size = 512 * 1024;
68
69 void gemu_log(const char *fmt, ...)
70 {
71 va_list ap;
72
73 va_start(ap, fmt);
74 vfprintf(stderr, fmt, ap);
75 va_end(ap);
76 }
77
78 void cpu_outb(CPUState *env, int addr, int val)
79 {
80 fprintf(stderr, "outb: port=0x%04x, data=%02x\n", addr, val);
81 }
82
83 void cpu_outw(CPUState *env, int addr, int val)
84 {
85 fprintf(stderr, "outw: port=0x%04x, data=%04x\n", addr, val);
86 }
87
88 void cpu_outl(CPUState *env, int addr, int val)
89 {
90 fprintf(stderr, "outl: port=0x%04x, data=%08x\n", addr, val);
91 }
92
93 int cpu_inb(CPUState *env, int addr)
94 {
95 fprintf(stderr, "inb: port=0x%04x\n", addr);
96 return 0;
97 }
98
99 int cpu_inw(CPUState *env, int addr)
100 {
101 fprintf(stderr, "inw: port=0x%04x\n", addr);
102 return 0;
103 }
104
105 int cpu_inl(CPUState *env, int addr)
106 {
107 fprintf(stderr, "inl: port=0x%04x\n", addr);
108 return 0;
109 }
110
111 #if defined(TARGET_I386)
112 int cpu_get_pic_interrupt(CPUState *env)
113 {
114 return -1;
115 }
116 #endif
117
118 /* timers for rdtsc */
119
120 #if 0
121
122 static uint64_t emu_time;
123
124 int64_t cpu_get_real_ticks(void)
125 {
126 return emu_time++;
127 }
128
129 #endif
130
131 #if defined(USE_NPTL)
132 /***********************************************************/
133 /* Helper routines for implementing atomic operations. */
134
135 /* To implement exclusive operations we force all cpus to syncronise.
136 We don't require a full sync, only that no cpus are executing guest code.
137 The alternative is to map target atomic ops onto host equivalents,
138 which requires quite a lot of per host/target work. */
139 static pthread_mutex_t exclusive_lock = PTHREAD_MUTEX_INITIALIZER;
140 static pthread_cond_t exclusive_cond = PTHREAD_COND_INITIALIZER;
141 static pthread_cond_t exclusive_resume = PTHREAD_COND_INITIALIZER;
142 static int pending_cpus;
143
144 /* Make sure everything is in a consistent state for calling fork(). */
145 void fork_start(void)
146 {
147 mmap_fork_start();
148 pthread_mutex_lock(&tb_lock);
149 pthread_mutex_lock(&exclusive_lock);
150 }
151
152 void fork_end(int child)
153 {
154 if (child) {
155 /* Child processes created by fork() only have a single thread.
156 Discard information about the parent threads. */
157 first_cpu = thread_env;
158 thread_env->next_cpu = NULL;
159 pending_cpus = 0;
160 pthread_mutex_init(&exclusive_lock, NULL);
161 pthread_cond_init(&exclusive_cond, NULL);
162 pthread_cond_init(&exclusive_resume, NULL);
163 pthread_mutex_init(&tb_lock, NULL);
164 } else {
165 pthread_mutex_unlock(&exclusive_lock);
166 pthread_mutex_unlock(&tb_lock);
167 }
168 mmap_fork_end(child);
169 }
170
171 /* Wait for pending exclusive operations to complete. The exclusive lock
172 must be held. */
173 static inline void exclusive_idle(void)
174 {
175 while (pending_cpus) {
176 pthread_cond_wait(&exclusive_resume, &exclusive_lock);
177 }
178 }
179
180 /* Start an exclusive operation.
181 Must only be called from outside cpu_arm_exec. */
182 static inline void start_exclusive(void)
183 {
184 CPUState *other;
185 pthread_mutex_lock(&exclusive_lock);
186 exclusive_idle();
187
188 pending_cpus = 1;
189 /* Make all other cpus stop executing. */
190 for (other = first_cpu; other; other = other->next_cpu) {
191 if (other->running) {
192 pending_cpus++;
193 cpu_interrupt(other, CPU_INTERRUPT_EXIT);
194 }
195 }
196 if (pending_cpus > 1) {
197 pthread_cond_wait(&exclusive_cond, &exclusive_lock);
198 }
199 }
200
201 /* Finish an exclusive operation. */
202 static inline void end_exclusive(void)
203 {
204 pending_cpus = 0;
205 pthread_cond_broadcast(&exclusive_resume);
206 pthread_mutex_unlock(&exclusive_lock);
207 }
208
209 /* Wait for exclusive ops to finish, and begin cpu execution. */
210 static inline void cpu_exec_start(CPUState *env)
211 {
212 pthread_mutex_lock(&exclusive_lock);
213 exclusive_idle();
214 env->running = 1;
215 pthread_mutex_unlock(&exclusive_lock);
216 }
217
218 /* Mark cpu as not executing, and release pending exclusive ops. */
219 static inline void cpu_exec_end(CPUState *env)
220 {
221 pthread_mutex_lock(&exclusive_lock);
222 env->running = 0;
223 if (pending_cpus > 1) {
224 pending_cpus--;
225 if (pending_cpus == 1) {
226 pthread_cond_signal(&exclusive_cond);
227 }
228 }
229 exclusive_idle();
230 pthread_mutex_unlock(&exclusive_lock);
231 }
232 #else /* if !USE_NPTL */
233 /* These are no-ops because we are not threadsafe. */
234 static inline void cpu_exec_start(CPUState *env)
235 {
236 }
237
238 static inline void cpu_exec_end(CPUState *env)
239 {
240 }
241
242 static inline void start_exclusive(void)
243 {
244 }
245
246 static inline void end_exclusive(void)
247 {
248 }
249
250 void fork_start(void)
251 {
252 }
253
254 void fork_end(int child)
255 {
256 }
257 #endif
258
259
260 #ifdef TARGET_I386
261 /***********************************************************/
262 /* CPUX86 core interface */
263
264 void cpu_smm_update(CPUState *env)
265 {
266 }
267
268 uint64_t cpu_get_tsc(CPUX86State *env)
269 {
270 return cpu_get_real_ticks();
271 }
272
273 static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
274 int flags)
275 {
276 unsigned int e1, e2;
277 uint32_t *p;
278 e1 = (addr << 16) | (limit & 0xffff);
279 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
280 e2 |= flags;
281 p = ptr;
282 p[0] = tswap32(e1);
283 p[1] = tswap32(e2);
284 }
285
286 static uint64_t *idt_table;
287 #ifdef TARGET_X86_64
288 static void set_gate64(void *ptr, unsigned int type, unsigned int dpl,
289 uint64_t addr, unsigned int sel)
290 {
291 uint32_t *p, e1, e2;
292 e1 = (addr & 0xffff) | (sel << 16);
293 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
294 p = ptr;
295 p[0] = tswap32(e1);
296 p[1] = tswap32(e2);
297 p[2] = tswap32(addr >> 32);
298 p[3] = 0;
299 }
300 /* only dpl matters as we do only user space emulation */
301 static void set_idt(int n, unsigned int dpl)
302 {
303 set_gate64(idt_table + n * 2, 0, dpl, 0, 0);
304 }
305 #else
306 static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
307 uint32_t addr, unsigned int sel)
308 {
309 uint32_t *p, e1, e2;
310 e1 = (addr & 0xffff) | (sel << 16);
311 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
312 p = ptr;
313 p[0] = tswap32(e1);
314 p[1] = tswap32(e2);
315 }
316
317 /* only dpl matters as we do only user space emulation */
318 static void set_idt(int n, unsigned int dpl)
319 {
320 set_gate(idt_table + n, 0, dpl, 0, 0);
321 }
322 #endif
323
324 void cpu_loop(CPUX86State *env)
325 {
326 int trapnr;
327 abi_ulong pc;
328 target_siginfo_t info;
329
330 for(;;) {
331 trapnr = cpu_x86_exec(env);
332 switch(trapnr) {
333 case 0x80:
334 /* linux syscall from int $0x80 */
335 env->regs[R_EAX] = do_syscall(env,
336 env->regs[R_EAX],
337 env->regs[R_EBX],
338 env->regs[R_ECX],
339 env->regs[R_EDX],
340 env->regs[R_ESI],
341 env->regs[R_EDI],
342 env->regs[R_EBP]);
343 break;
344 #ifndef TARGET_ABI32
345 case EXCP_SYSCALL:
346 /* linux syscall from syscall intruction */
347 env->regs[R_EAX] = do_syscall(env,
348 env->regs[R_EAX],
349 env->regs[R_EDI],
350 env->regs[R_ESI],
351 env->regs[R_EDX],
352 env->regs[10],
353 env->regs[8],
354 env->regs[9]);
355 env->eip = env->exception_next_eip;
356 break;
357 #endif
358 case EXCP0B_NOSEG:
359 case EXCP0C_STACK:
360 info.si_signo = SIGBUS;
361 info.si_errno = 0;
362 info.si_code = TARGET_SI_KERNEL;
363 info._sifields._sigfault._addr = 0;
364 queue_signal(env, info.si_signo, &info);
365 break;
366 case EXCP0D_GPF:
367 /* XXX: potential problem if ABI32 */
368 #ifndef TARGET_X86_64
369 if (env->eflags & VM_MASK) {
370 handle_vm86_fault(env);
371 } else
372 #endif
373 {
374 info.si_signo = SIGSEGV;
375 info.si_errno = 0;
376 info.si_code = TARGET_SI_KERNEL;
377 info._sifields._sigfault._addr = 0;
378 queue_signal(env, info.si_signo, &info);
379 }
380 break;
381 case EXCP0E_PAGE:
382 info.si_signo = SIGSEGV;
383 info.si_errno = 0;
384 if (!(env->error_code & 1))
385 info.si_code = TARGET_SEGV_MAPERR;
386 else
387 info.si_code = TARGET_SEGV_ACCERR;
388 info._sifields._sigfault._addr = env->cr[2];
389 queue_signal(env, info.si_signo, &info);
390 break;
391 case EXCP00_DIVZ:
392 #ifndef TARGET_X86_64
393 if (env->eflags & VM_MASK) {
394 handle_vm86_trap(env, trapnr);
395 } else
396 #endif
397 {
398 /* division by zero */
399 info.si_signo = SIGFPE;
400 info.si_errno = 0;
401 info.si_code = TARGET_FPE_INTDIV;
402 info._sifields._sigfault._addr = env->eip;
403 queue_signal(env, info.si_signo, &info);
404 }
405 break;
406 case EXCP01_DB:
407 case EXCP03_INT3:
408 #ifndef TARGET_X86_64
409 if (env->eflags & VM_MASK) {
410 handle_vm86_trap(env, trapnr);
411 } else
412 #endif
413 {
414 info.si_signo = SIGTRAP;
415 info.si_errno = 0;
416 if (trapnr == EXCP01_DB) {
417 info.si_code = TARGET_TRAP_BRKPT;
418 info._sifields._sigfault._addr = env->eip;
419 } else {
420 info.si_code = TARGET_SI_KERNEL;
421 info._sifields._sigfault._addr = 0;
422 }
423 queue_signal(env, info.si_signo, &info);
424 }
425 break;
426 case EXCP04_INTO:
427 case EXCP05_BOUND:
428 #ifndef TARGET_X86_64
429 if (env->eflags & VM_MASK) {
430 handle_vm86_trap(env, trapnr);
431 } else
432 #endif
433 {
434 info.si_signo = SIGSEGV;
435 info.si_errno = 0;
436 info.si_code = TARGET_SI_KERNEL;
437 info._sifields._sigfault._addr = 0;
438 queue_signal(env, info.si_signo, &info);
439 }
440 break;
441 case EXCP06_ILLOP:
442 info.si_signo = SIGILL;
443 info.si_errno = 0;
444 info.si_code = TARGET_ILL_ILLOPN;
445 info._sifields._sigfault._addr = env->eip;
446 queue_signal(env, info.si_signo, &info);
447 break;
448 case EXCP_INTERRUPT:
449 /* just indicate that signals should be handled asap */
450 break;
451 case EXCP_DEBUG:
452 {
453 int sig;
454
455 sig = gdb_handlesig (env, TARGET_SIGTRAP);
456 if (sig)
457 {
458 info.si_signo = sig;
459 info.si_errno = 0;
460 info.si_code = TARGET_TRAP_BRKPT;
461 queue_signal(env, info.si_signo, &info);
462 }
463 }
464 break;
465 default:
466 pc = env->segs[R_CS].base + env->eip;
467 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
468 (long)pc, trapnr);
469 abort();
470 }
471 process_pending_signals(env);
472 }
473 }
474 #endif
475
476 #ifdef TARGET_ARM
477
478 static void arm_cache_flush(abi_ulong start, abi_ulong last)
479 {
480 abi_ulong addr, last1;
481
482 if (last < start)
483 return;
484 addr = start;
485 for(;;) {
486 last1 = ((addr + TARGET_PAGE_SIZE) & TARGET_PAGE_MASK) - 1;
487 if (last1 > last)
488 last1 = last;
489 tb_invalidate_page_range(addr, last1 + 1);
490 if (last1 == last)
491 break;
492 addr = last1 + 1;
493 }
494 }
495
496 /* Handle a jump to the kernel code page. */
497 static int
498 do_kernel_trap(CPUARMState *env)
499 {
500 uint32_t addr;
501 uint32_t cpsr;
502 uint32_t val;
503
504 switch (env->regs[15]) {
505 case 0xffff0fa0: /* __kernel_memory_barrier */
506 /* ??? No-op. Will need to do better for SMP. */
507 break;
508 case 0xffff0fc0: /* __kernel_cmpxchg */
509 /* XXX: This only works between threads, not between processes.
510 It's probably possible to implement this with native host
511 operations. However things like ldrex/strex are much harder so
512 there's not much point trying. */
513 start_exclusive();
514 cpsr = cpsr_read(env);
515 addr = env->regs[2];
516 /* FIXME: This should SEGV if the access fails. */
517 if (get_user_u32(val, addr))
518 val = ~env->regs[0];
519 if (val == env->regs[0]) {
520 val = env->regs[1];
521 /* FIXME: Check for segfaults. */
522 put_user_u32(val, addr);
523 env->regs[0] = 0;
524 cpsr |= CPSR_C;
525 } else {
526 env->regs[0] = -1;
527 cpsr &= ~CPSR_C;
528 }
529 cpsr_write(env, cpsr, CPSR_C);
530 end_exclusive();
531 break;
532 case 0xffff0fe0: /* __kernel_get_tls */
533 env->regs[0] = env->cp15.c13_tls2;
534 break;
535 default:
536 return 1;
537 }
538 /* Jump back to the caller. */
539 addr = env->regs[14];
540 if (addr & 1) {
541 env->thumb = 1;
542 addr &= ~1;
543 }
544 env->regs[15] = addr;
545
546 return 0;
547 }
548
549 void cpu_loop(CPUARMState *env)
550 {
551 int trapnr;
552 unsigned int n, insn;
553 target_siginfo_t info;
554 uint32_t addr;
555
556 for(;;) {
557 cpu_exec_start(env);
558 trapnr = cpu_arm_exec(env);
559 cpu_exec_end(env);
560 switch(trapnr) {
561 case EXCP_UDEF:
562 {
563 TaskState *ts = env->opaque;
564 uint32_t opcode;
565 int rc;
566
567 /* we handle the FPU emulation here, as Linux */
568 /* we get the opcode */
569 /* FIXME - what to do if get_user() fails? */
570 get_user_u32(opcode, env->regs[15]);
571
572 rc = EmulateAll(opcode, &ts->fpa, env);
573 if (rc == 0) { /* illegal instruction */
574 info.si_signo = SIGILL;
575 info.si_errno = 0;
576 info.si_code = TARGET_ILL_ILLOPN;
577 info._sifields._sigfault._addr = env->regs[15];
578 queue_signal(env, info.si_signo, &info);
579 } else if (rc < 0) { /* FP exception */
580 int arm_fpe=0;
581
582 /* translate softfloat flags to FPSR flags */
583 if (-rc & float_flag_invalid)
584 arm_fpe |= BIT_IOC;
585 if (-rc & float_flag_divbyzero)
586 arm_fpe |= BIT_DZC;
587 if (-rc & float_flag_overflow)
588 arm_fpe |= BIT_OFC;
589 if (-rc & float_flag_underflow)
590 arm_fpe |= BIT_UFC;
591 if (-rc & float_flag_inexact)
592 arm_fpe |= BIT_IXC;
593
594 FPSR fpsr = ts->fpa.fpsr;
595 //printf("fpsr 0x%x, arm_fpe 0x%x\n",fpsr,arm_fpe);
596
597 if (fpsr & (arm_fpe << 16)) { /* exception enabled? */
598 info.si_signo = SIGFPE;
599 info.si_errno = 0;
600
601 /* ordered by priority, least first */
602 if (arm_fpe & BIT_IXC) info.si_code = TARGET_FPE_FLTRES;
603 if (arm_fpe & BIT_UFC) info.si_code = TARGET_FPE_FLTUND;
604 if (arm_fpe & BIT_OFC) info.si_code = TARGET_FPE_FLTOVF;
605 if (arm_fpe & BIT_DZC) info.si_code = TARGET_FPE_FLTDIV;
606 if (arm_fpe & BIT_IOC) info.si_code = TARGET_FPE_FLTINV;
607
608 info._sifields._sigfault._addr = env->regs[15];
609 queue_signal(env, info.si_signo, &info);
610 } else {
611 env->regs[15] += 4;
612 }
613
614 /* accumulate unenabled exceptions */
615 if ((!(fpsr & BIT_IXE)) && (arm_fpe & BIT_IXC))
616 fpsr |= BIT_IXC;
617 if ((!(fpsr & BIT_UFE)) && (arm_fpe & BIT_UFC))
618 fpsr |= BIT_UFC;
619 if ((!(fpsr & BIT_OFE)) && (arm_fpe & BIT_OFC))
620 fpsr |= BIT_OFC;
621 if ((!(fpsr & BIT_DZE)) && (arm_fpe & BIT_DZC))
622 fpsr |= BIT_DZC;
623 if ((!(fpsr & BIT_IOE)) && (arm_fpe & BIT_IOC))
624 fpsr |= BIT_IOC;
625 ts->fpa.fpsr=fpsr;
626 } else { /* everything OK */
627 /* increment PC */
628 env->regs[15] += 4;
629 }
630 }
631 break;
632 case EXCP_SWI:
633 case EXCP_BKPT:
634 {
635 env->eabi = 1;
636 /* system call */
637 if (trapnr == EXCP_BKPT) {
638 if (env->thumb) {
639 /* FIXME - what to do if get_user() fails? */
640 get_user_u16(insn, env->regs[15]);
641 n = insn & 0xff;
642 env->regs[15] += 2;
643 } else {
644 /* FIXME - what to do if get_user() fails? */
645 get_user_u32(insn, env->regs[15]);
646 n = (insn & 0xf) | ((insn >> 4) & 0xff0);
647 env->regs[15] += 4;
648 }
649 } else {
650 if (env->thumb) {
651 /* FIXME - what to do if get_user() fails? */
652 get_user_u16(insn, env->regs[15] - 2);
653 n = insn & 0xff;
654 } else {
655 /* FIXME - what to do if get_user() fails? */
656 get_user_u32(insn, env->regs[15] - 4);
657 n = insn & 0xffffff;
658 }
659 }
660
661 if (n == ARM_NR_cacheflush) {
662 arm_cache_flush(env->regs[0], env->regs[1]);
663 } else if (n == ARM_NR_semihosting
664 || n == ARM_NR_thumb_semihosting) {
665 env->regs[0] = do_arm_semihosting (env);
666 } else if (n == 0 || n >= ARM_SYSCALL_BASE
667 || (env->thumb && n == ARM_THUMB_SYSCALL)) {
668 /* linux syscall */
669 if (env->thumb || n == 0) {
670 n = env->regs[7];
671 } else {
672 n -= ARM_SYSCALL_BASE;
673 env->eabi = 0;
674 }
675 if ( n > ARM_NR_BASE) {
676 switch (n) {
677 case ARM_NR_cacheflush:
678 arm_cache_flush(env->regs[0], env->regs[1]);
679 break;
680 case ARM_NR_set_tls:
681 cpu_set_tls(env, env->regs[0]);
682 env->regs[0] = 0;
683 break;
684 default:
685 gemu_log("qemu: Unsupported ARM syscall: 0x%x\n",
686 n);
687 env->regs[0] = -TARGET_ENOSYS;
688 break;
689 }
690 } else {
691 env->regs[0] = do_syscall(env,
692 n,
693 env->regs[0],
694 env->regs[1],
695 env->regs[2],
696 env->regs[3],
697 env->regs[4],
698 env->regs[5]);
699 }
700 } else {
701 goto error;
702 }
703 }
704 break;
705 case EXCP_INTERRUPT:
706 /* just indicate that signals should be handled asap */
707 break;
708 case EXCP_PREFETCH_ABORT:
709 addr = env->cp15.c6_insn;
710 goto do_segv;
711 case EXCP_DATA_ABORT:
712 addr = env->cp15.c6_data;
713 goto do_segv;
714 do_segv:
715 {
716 info.si_signo = SIGSEGV;
717 info.si_errno = 0;
718 /* XXX: check env->error_code */
719 info.si_code = TARGET_SEGV_MAPERR;
720 info._sifields._sigfault._addr = addr;
721 queue_signal(env, info.si_signo, &info);
722 }
723 break;
724 case EXCP_DEBUG:
725 {
726 int sig;
727
728 sig = gdb_handlesig (env, TARGET_SIGTRAP);
729 if (sig)
730 {
731 info.si_signo = sig;
732 info.si_errno = 0;
733 info.si_code = TARGET_TRAP_BRKPT;
734 queue_signal(env, info.si_signo, &info);
735 }
736 }
737 break;
738 case EXCP_KERNEL_TRAP:
739 if (do_kernel_trap(env))
740 goto error;
741 break;
742 default:
743 error:
744 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
745 trapnr);
746 cpu_dump_state(env, stderr, fprintf, 0);
747 abort();
748 }
749 process_pending_signals(env);
750 }
751 }
752
753 #endif
754
755 #ifdef TARGET_SPARC
756 #define SPARC64_STACK_BIAS 2047
757
758 //#define DEBUG_WIN
759
760 /* WARNING: dealing with register windows _is_ complicated. More info
761 can be found at http://www.sics.se/~psm/sparcstack.html */
762 static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
763 {
764 index = (index + cwp * 16) % (16 * env->nwindows);
765 /* wrap handling : if cwp is on the last window, then we use the
766 registers 'after' the end */
767 if (index < 8 && env->cwp == env->nwindows - 1)
768 index += 16 * env->nwindows;
769 return index;
770 }
771
772 /* save the register window 'cwp1' */
773 static inline void save_window_offset(CPUSPARCState *env, int cwp1)
774 {
775 unsigned int i;
776 abi_ulong sp_ptr;
777
778 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
779 #ifdef TARGET_SPARC64
780 if (sp_ptr & 3)
781 sp_ptr += SPARC64_STACK_BIAS;
782 #endif
783 #if defined(DEBUG_WIN)
784 printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n",
785 sp_ptr, cwp1);
786 #endif
787 for(i = 0; i < 16; i++) {
788 /* FIXME - what to do if put_user() fails? */
789 put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
790 sp_ptr += sizeof(abi_ulong);
791 }
792 }
793
794 static void save_window(CPUSPARCState *env)
795 {
796 #ifndef TARGET_SPARC64
797 unsigned int new_wim;
798 new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) &
799 ((1LL << env->nwindows) - 1);
800 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
801 env->wim = new_wim;
802 #else
803 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
804 env->cansave++;
805 env->canrestore--;
806 #endif
807 }
808
809 static void restore_window(CPUSPARCState *env)
810 {
811 #ifndef TARGET_SPARC64
812 unsigned int new_wim;
813 #endif
814 unsigned int i, cwp1;
815 abi_ulong sp_ptr;
816
817 #ifndef TARGET_SPARC64
818 new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) &
819 ((1LL << env->nwindows) - 1);
820 #endif
821
822 /* restore the invalid window */
823 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
824 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
825 #ifdef TARGET_SPARC64
826 if (sp_ptr & 3)
827 sp_ptr += SPARC64_STACK_BIAS;
828 #endif
829 #if defined(DEBUG_WIN)
830 printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n",
831 sp_ptr, cwp1);
832 #endif
833 for(i = 0; i < 16; i++) {
834 /* FIXME - what to do if get_user() fails? */
835 get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
836 sp_ptr += sizeof(abi_ulong);
837 }
838 #ifdef TARGET_SPARC64
839 env->canrestore++;
840 if (env->cleanwin < env->nwindows - 1)
841 env->cleanwin++;
842 env->cansave--;
843 #else
844 env->wim = new_wim;
845 #endif
846 }
847
848 static void flush_windows(CPUSPARCState *env)
849 {
850 int offset, cwp1;
851
852 offset = 1;
853 for(;;) {
854 /* if restore would invoke restore_window(), then we can stop */
855 cwp1 = cpu_cwp_inc(env, env->cwp + offset);
856 #ifndef TARGET_SPARC64
857 if (env->wim & (1 << cwp1))
858 break;
859 #else
860 if (env->canrestore == 0)
861 break;
862 env->cansave++;
863 env->canrestore--;
864 #endif
865 save_window_offset(env, cwp1);
866 offset++;
867 }
868 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
869 #ifndef TARGET_SPARC64
870 /* set wim so that restore will reload the registers */
871 env->wim = 1 << cwp1;
872 #endif
873 #if defined(DEBUG_WIN)
874 printf("flush_windows: nb=%d\n", offset - 1);
875 #endif
876 }
877
878 void cpu_loop (CPUSPARCState *env)
879 {
880 int trapnr, ret;
881 target_siginfo_t info;
882
883 while (1) {
884 trapnr = cpu_sparc_exec (env);
885
886 switch (trapnr) {
887 #ifndef TARGET_SPARC64
888 case 0x88:
889 case 0x90:
890 #else
891 case 0x110:
892 case 0x16d:
893 #endif
894 ret = do_syscall (env, env->gregs[1],
895 env->regwptr[0], env->regwptr[1],
896 env->regwptr[2], env->regwptr[3],
897 env->regwptr[4], env->regwptr[5]);
898 if ((unsigned int)ret >= (unsigned int)(-515)) {
899 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
900 env->xcc |= PSR_CARRY;
901 #else
902 env->psr |= PSR_CARRY;
903 #endif
904 ret = -ret;
905 } else {
906 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
907 env->xcc &= ~PSR_CARRY;
908 #else
909 env->psr &= ~PSR_CARRY;
910 #endif
911 }
912 env->regwptr[0] = ret;
913 /* next instruction */
914 env->pc = env->npc;
915 env->npc = env->npc + 4;
916 break;
917 case 0x83: /* flush windows */
918 #ifdef TARGET_ABI32
919 case 0x103:
920 #endif
921 flush_windows(env);
922 /* next instruction */
923 env->pc = env->npc;
924 env->npc = env->npc + 4;
925 break;
926 #ifndef TARGET_SPARC64
927 case TT_WIN_OVF: /* window overflow */
928 save_window(env);
929 break;
930 case TT_WIN_UNF: /* window underflow */
931 restore_window(env);
932 break;
933 case TT_TFAULT:
934 case TT_DFAULT:
935 {
936 info.si_signo = SIGSEGV;
937 info.si_errno = 0;
938 /* XXX: check env->error_code */
939 info.si_code = TARGET_SEGV_MAPERR;
940 info._sifields._sigfault._addr = env->mmuregs[4];
941 queue_signal(env, info.si_signo, &info);
942 }
943 break;
944 #else
945 case TT_SPILL: /* window overflow */
946 save_window(env);
947 break;
948 case TT_FILL: /* window underflow */
949 restore_window(env);
950 break;
951 case TT_TFAULT:
952 case TT_DFAULT:
953 {
954 info.si_signo = SIGSEGV;
955 info.si_errno = 0;
956 /* XXX: check env->error_code */
957 info.si_code = TARGET_SEGV_MAPERR;
958 if (trapnr == TT_DFAULT)
959 info._sifields._sigfault._addr = env->dmmuregs[4];
960 else
961 info._sifields._sigfault._addr = env->tsptr->tpc;
962 queue_signal(env, info.si_signo, &info);
963 }
964 break;
965 #ifndef TARGET_ABI32
966 case 0x16e:
967 flush_windows(env);
968 sparc64_get_context(env);
969 break;
970 case 0x16f:
971 flush_windows(env);
972 sparc64_set_context(env);
973 break;
974 #endif
975 #endif
976 case EXCP_INTERRUPT:
977 /* just indicate that signals should be handled asap */
978 break;
979 case EXCP_DEBUG:
980 {
981 int sig;
982
983 sig = gdb_handlesig (env, TARGET_SIGTRAP);
984 if (sig)
985 {
986 info.si_signo = sig;
987 info.si_errno = 0;
988 info.si_code = TARGET_TRAP_BRKPT;
989 queue_signal(env, info.si_signo, &info);
990 }
991 }
992 break;
993 default:
994 printf ("Unhandled trap: 0x%x\n", trapnr);
995 cpu_dump_state(env, stderr, fprintf, 0);
996 exit (1);
997 }
998 process_pending_signals (env);
999 }
1000 }
1001
1002 #endif
1003
1004 #ifdef TARGET_PPC
1005 static inline uint64_t cpu_ppc_get_tb (CPUState *env)
1006 {
1007 /* TO FIX */
1008 return 0;
1009 }
1010
1011 uint32_t cpu_ppc_load_tbl (CPUState *env)
1012 {
1013 return cpu_ppc_get_tb(env) & 0xFFFFFFFF;
1014 }
1015
1016 uint32_t cpu_ppc_load_tbu (CPUState *env)
1017 {
1018 return cpu_ppc_get_tb(env) >> 32;
1019 }
1020
1021 uint32_t cpu_ppc_load_atbl (CPUState *env)
1022 {
1023 return cpu_ppc_get_tb(env) & 0xFFFFFFFF;
1024 }
1025
1026 uint32_t cpu_ppc_load_atbu (CPUState *env)
1027 {
1028 return cpu_ppc_get_tb(env) >> 32;
1029 }
1030
1031 uint32_t cpu_ppc601_load_rtcu (CPUState *env)
1032 __attribute__ (( alias ("cpu_ppc_load_tbu") ));
1033
1034 uint32_t cpu_ppc601_load_rtcl (CPUState *env)
1035 {
1036 return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
1037 }
1038
1039 /* XXX: to be fixed */
1040 int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, target_ulong *valp)
1041 {
1042 return -1;
1043 }
1044
1045 int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, target_ulong val)
1046 {
1047 return -1;
1048 }
1049
1050 #define EXCP_DUMP(env, fmt, args...) \
1051 do { \
1052 fprintf(stderr, fmt , ##args); \
1053 cpu_dump_state(env, stderr, fprintf, 0); \
1054 if (loglevel != 0) { \
1055 fprintf(logfile, fmt , ##args); \
1056 cpu_dump_state(env, logfile, fprintf, 0); \
1057 } \
1058 } while (0)
1059
1060 void cpu_loop(CPUPPCState *env)
1061 {
1062 target_siginfo_t info;
1063 int trapnr;
1064 uint32_t ret;
1065
1066 for(;;) {
1067 trapnr = cpu_ppc_exec(env);
1068 switch(trapnr) {
1069 case POWERPC_EXCP_NONE:
1070 /* Just go on */
1071 break;
1072 case POWERPC_EXCP_CRITICAL: /* Critical input */
1073 cpu_abort(env, "Critical interrupt while in user mode. "
1074 "Aborting\n");
1075 break;
1076 case POWERPC_EXCP_MCHECK: /* Machine check exception */
1077 cpu_abort(env, "Machine check exception while in user mode. "
1078 "Aborting\n");
1079 break;
1080 case POWERPC_EXCP_DSI: /* Data storage exception */
1081 EXCP_DUMP(env, "Invalid data memory access: 0x" ADDRX "\n",
1082 env->spr[SPR_DAR]);
1083 /* XXX: check this. Seems bugged */
1084 switch (env->error_code & 0xFF000000) {
1085 case 0x40000000:
1086 info.si_signo = TARGET_SIGSEGV;
1087 info.si_errno = 0;
1088 info.si_code = TARGET_SEGV_MAPERR;
1089 break;
1090 case 0x04000000:
1091 info.si_signo = TARGET_SIGILL;
1092 info.si_errno = 0;
1093 info.si_code = TARGET_ILL_ILLADR;
1094 break;
1095 case 0x08000000:
1096 info.si_signo = TARGET_SIGSEGV;
1097 info.si_errno = 0;
1098 info.si_code = TARGET_SEGV_ACCERR;
1099 break;
1100 default:
1101 /* Let's send a regular segfault... */
1102 EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
1103 env->error_code);
1104 info.si_signo = TARGET_SIGSEGV;
1105 info.si_errno = 0;
1106 info.si_code = TARGET_SEGV_MAPERR;
1107 break;
1108 }
1109 info._sifields._sigfault._addr = env->nip;
1110 queue_signal(env, info.si_signo, &info);
1111 break;
1112 case POWERPC_EXCP_ISI: /* Instruction storage exception */
1113 EXCP_DUMP(env, "Invalid instruction fetch: 0x\n" ADDRX "\n",
1114 env->spr[SPR_SRR0]);
1115 /* XXX: check this */
1116 switch (env->error_code & 0xFF000000) {
1117 case 0x40000000:
1118 info.si_signo = TARGET_SIGSEGV;
1119 info.si_errno = 0;
1120 info.si_code = TARGET_SEGV_MAPERR;
1121 break;
1122 case 0x10000000:
1123 case 0x08000000:
1124 info.si_signo = TARGET_SIGSEGV;
1125 info.si_errno = 0;
1126 info.si_code = TARGET_SEGV_ACCERR;
1127 break;
1128 default:
1129 /* Let's send a regular segfault... */
1130 EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
1131 env->error_code);
1132 info.si_signo = TARGET_SIGSEGV;
1133 info.si_errno = 0;
1134 info.si_code = TARGET_SEGV_MAPERR;
1135 break;
1136 }
1137 info._sifields._sigfault._addr = env->nip - 4;
1138 queue_signal(env, info.si_signo, &info);
1139 break;
1140 case POWERPC_EXCP_EXTERNAL: /* External input */
1141 cpu_abort(env, "External interrupt while in user mode. "
1142 "Aborting\n");
1143 break;
1144 case POWERPC_EXCP_ALIGN: /* Alignment exception */
1145 EXCP_DUMP(env, "Unaligned memory access\n");
1146 /* XXX: check this */
1147 info.si_signo = TARGET_SIGBUS;
1148 info.si_errno = 0;
1149 info.si_code = TARGET_BUS_ADRALN;
1150 info._sifields._sigfault._addr = env->nip - 4;
1151 queue_signal(env, info.si_signo, &info);
1152 break;
1153 case POWERPC_EXCP_PROGRAM: /* Program exception */
1154 /* XXX: check this */
1155 switch (env->error_code & ~0xF) {
1156 case POWERPC_EXCP_FP:
1157 EXCP_DUMP(env, "Floating point program exception\n");
1158 info.si_signo = TARGET_SIGFPE;
1159 info.si_errno = 0;
1160 switch (env->error_code & 0xF) {
1161 case POWERPC_EXCP_FP_OX:
1162 info.si_code = TARGET_FPE_FLTOVF;
1163 break;
1164 case POWERPC_EXCP_FP_UX:
1165 info.si_code = TARGET_FPE_FLTUND;
1166 break;
1167 case POWERPC_EXCP_FP_ZX:
1168 case POWERPC_EXCP_FP_VXZDZ:
1169 info.si_code = TARGET_FPE_FLTDIV;
1170 break;
1171 case POWERPC_EXCP_FP_XX:
1172 info.si_code = TARGET_FPE_FLTRES;
1173 break;
1174 case POWERPC_EXCP_FP_VXSOFT:
1175 info.si_code = TARGET_FPE_FLTINV;
1176 break;
1177 case POWERPC_EXCP_FP_VXSNAN:
1178 case POWERPC_EXCP_FP_VXISI:
1179 case POWERPC_EXCP_FP_VXIDI:
1180 case POWERPC_EXCP_FP_VXIMZ:
1181 case POWERPC_EXCP_FP_VXVC:
1182 case POWERPC_EXCP_FP_VXSQRT:
1183 case POWERPC_EXCP_FP_VXCVI:
1184 info.si_code = TARGET_FPE_FLTSUB;
1185 break;
1186 default:
1187 EXCP_DUMP(env, "Unknown floating point exception (%02x)\n",
1188 env->error_code);
1189 break;
1190 }
1191 break;
1192 case POWERPC_EXCP_INVAL:
1193 EXCP_DUMP(env, "Invalid instruction\n");
1194 info.si_signo = TARGET_SIGILL;
1195 info.si_errno = 0;
1196 switch (env->error_code & 0xF) {
1197 case POWERPC_EXCP_INVAL_INVAL:
1198 info.si_code = TARGET_ILL_ILLOPC;
1199 break;
1200 case POWERPC_EXCP_INVAL_LSWX:
1201 info.si_code = TARGET_ILL_ILLOPN;
1202 break;
1203 case POWERPC_EXCP_INVAL_SPR:
1204 info.si_code = TARGET_ILL_PRVREG;
1205 break;
1206 case POWERPC_EXCP_INVAL_FP:
1207 info.si_code = TARGET_ILL_COPROC;
1208 break;
1209 default:
1210 EXCP_DUMP(env, "Unknown invalid operation (%02x)\n",
1211 env->error_code & 0xF);
1212 info.si_code = TARGET_ILL_ILLADR;
1213 break;
1214 }
1215 break;
1216 case POWERPC_EXCP_PRIV:
1217 EXCP_DUMP(env, "Privilege violation\n");
1218 info.si_signo = TARGET_SIGILL;
1219 info.si_errno = 0;
1220 switch (env->error_code & 0xF) {
1221 case POWERPC_EXCP_PRIV_OPC:
1222 info.si_code = TARGET_ILL_PRVOPC;
1223 break;
1224 case POWERPC_EXCP_PRIV_REG:
1225 info.si_code = TARGET_ILL_PRVREG;
1226 break;
1227 default:
1228 EXCP_DUMP(env, "Unknown privilege violation (%02x)\n",
1229 env->error_code & 0xF);
1230 info.si_code = TARGET_ILL_PRVOPC;
1231 break;
1232 }
1233 break;
1234 case POWERPC_EXCP_TRAP:
1235 cpu_abort(env, "Tried to call a TRAP\n");
1236 break;
1237 default:
1238 /* Should not happen ! */
1239 cpu_abort(env, "Unknown program exception (%02x)\n",
1240 env->error_code);
1241 break;
1242 }
1243 info._sifields._sigfault._addr = env->nip - 4;
1244 queue_signal(env, info.si_signo, &info);
1245 break;
1246 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
1247 EXCP_DUMP(env, "No floating point allowed\n");
1248 info.si_signo = TARGET_SIGILL;
1249 info.si_errno = 0;
1250 info.si_code = TARGET_ILL_COPROC;
1251 info._sifields._sigfault._addr = env->nip - 4;
1252 queue_signal(env, info.si_signo, &info);
1253 break;
1254 case POWERPC_EXCP_SYSCALL: /* System call exception */
1255 cpu_abort(env, "Syscall exception while in user mode. "
1256 "Aborting\n");
1257 break;
1258 case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
1259 EXCP_DUMP(env, "No APU instruction allowed\n");
1260 info.si_signo = TARGET_SIGILL;
1261 info.si_errno = 0;
1262 info.si_code = TARGET_ILL_COPROC;
1263 info._sifields._sigfault._addr = env->nip - 4;
1264 queue_signal(env, info.si_signo, &info);
1265 break;
1266 case POWERPC_EXCP_DECR: /* Decrementer exception */
1267 cpu_abort(env, "Decrementer interrupt while in user mode. "
1268 "Aborting\n");
1269 break;
1270 case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
1271 cpu_abort(env, "Fix interval timer interrupt while in user mode. "
1272 "Aborting\n");
1273 break;
1274 case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
1275 cpu_abort(env, "Watchdog timer interrupt while in user mode. "
1276 "Aborting\n");
1277 break;
1278 case POWERPC_EXCP_DTLB: /* Data TLB error */
1279 cpu_abort(env, "Data TLB exception while in user mode. "
1280 "Aborting\n");
1281 break;
1282 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
1283 cpu_abort(env, "Instruction TLB exception while in user mode. "
1284 "Aborting\n");
1285 break;
1286 case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */
1287 EXCP_DUMP(env, "No SPE/floating-point instruction allowed\n");
1288 info.si_signo = TARGET_SIGILL;
1289 info.si_errno = 0;
1290 info.si_code = TARGET_ILL_COPROC;
1291 info._sifields._sigfault._addr = env->nip - 4;
1292 queue_signal(env, info.si_signo, &info);
1293 break;
1294 case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */
1295 cpu_abort(env, "Embedded floating-point data IRQ not handled\n");
1296 break;
1297 case POWERPC_EXCP_EFPRI: /* Embedded floating-point round IRQ */
1298 cpu_abort(env, "Embedded floating-point round IRQ not handled\n");
1299 break;
1300 case POWERPC_EXCP_EPERFM: /* Embedded performance monitor IRQ */
1301 cpu_abort(env, "Performance monitor exception not handled\n");
1302 break;
1303 case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
1304 cpu_abort(env, "Doorbell interrupt while in user mode. "
1305 "Aborting\n");
1306 break;
1307 case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
1308 cpu_abort(env, "Doorbell critical interrupt while in user mode. "
1309 "Aborting\n");
1310 break;
1311 case POWERPC_EXCP_RESET: /* System reset exception */
1312 cpu_abort(env, "Reset interrupt while in user mode. "
1313 "Aborting\n");
1314 break;
1315 case POWERPC_EXCP_DSEG: /* Data segment exception */
1316 cpu_abort(env, "Data segment exception while in user mode. "
1317 "Aborting\n");
1318 break;
1319 case POWERPC_EXCP_ISEG: /* Instruction segment exception */
1320 cpu_abort(env, "Instruction segment exception "
1321 "while in user mode. Aborting\n");
1322 break;
1323 /* PowerPC 64 with hypervisor mode support */
1324 case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
1325 cpu_abort(env, "Hypervisor decrementer interrupt "
1326 "while in user mode. Aborting\n");
1327 break;
1328 case POWERPC_EXCP_TRACE: /* Trace exception */
1329 /* Nothing to do:
1330 * we use this exception to emulate step-by-step execution mode.
1331 */
1332 break;
1333 /* PowerPC 64 with hypervisor mode support */
1334 case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
1335 cpu_abort(env, "Hypervisor data storage exception "
1336 "while in user mode. Aborting\n");
1337 break;
1338 case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */
1339 cpu_abort(env, "Hypervisor instruction storage exception "
1340 "while in user mode. Aborting\n");
1341 break;
1342 case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
1343 cpu_abort(env, "Hypervisor data segment exception "
1344 "while in user mode. Aborting\n");
1345 break;
1346 case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */
1347 cpu_abort(env, "Hypervisor instruction segment exception "
1348 "while in user mode. Aborting\n");
1349 break;
1350 case POWERPC_EXCP_VPU: /* Vector unavailable exception */
1351 EXCP_DUMP(env, "No Altivec instructions allowed\n");
1352 info.si_signo = TARGET_SIGILL;
1353 info.si_errno = 0;
1354 info.si_code = TARGET_ILL_COPROC;
1355 info._sifields._sigfault._addr = env->nip - 4;
1356 queue_signal(env, info.si_signo, &info);
1357 break;
1358 case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */
1359 cpu_abort(env, "Programable interval timer interrupt "
1360 "while in user mode. Aborting\n");
1361 break;
1362 case POWERPC_EXCP_IO: /* IO error exception */
1363 cpu_abort(env, "IO error exception while in user mode. "
1364 "Aborting\n");
1365 break;
1366 case POWERPC_EXCP_RUNM: /* Run mode exception */
1367 cpu_abort(env, "Run mode exception while in user mode. "
1368 "Aborting\n");
1369 break;
1370 case POWERPC_EXCP_EMUL: /* Emulation trap exception */
1371 cpu_abort(env, "Emulation trap exception not handled\n");
1372 break;
1373 case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
1374 cpu_abort(env, "Instruction fetch TLB exception "
1375 "while in user-mode. Aborting");
1376 break;
1377 case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
1378 cpu_abort(env, "Data load TLB exception while in user-mode. "
1379 "Aborting");
1380 break;
1381 case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
1382 cpu_abort(env, "Data store TLB exception while in user-mode. "
1383 "Aborting");
1384 break;
1385 case POWERPC_EXCP_FPA: /* Floating-point assist exception */
1386 cpu_abort(env, "Floating-point assist exception not handled\n");
1387 break;
1388 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
1389 cpu_abort(env, "Instruction address breakpoint exception "
1390 "not handled\n");
1391 break;
1392 case POWERPC_EXCP_SMI: /* System management interrupt */
1393 cpu_abort(env, "System management interrupt while in user mode. "
1394 "Aborting\n");
1395 break;
1396 case POWERPC_EXCP_THERM: /* Thermal interrupt */
1397 cpu_abort(env, "Thermal interrupt interrupt while in user mode. "
1398 "Aborting\n");
1399 break;
1400 case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */
1401 cpu_abort(env, "Performance monitor exception not handled\n");
1402 break;
1403 case POWERPC_EXCP_VPUA: /* Vector assist exception */
1404 cpu_abort(env, "Vector assist exception not handled\n");
1405 break;
1406 case POWERPC_EXCP_SOFTP: /* Soft patch exception */
1407 cpu_abort(env, "Soft patch exception not handled\n");
1408 break;
1409 case POWERPC_EXCP_MAINT: /* Maintenance exception */
1410 cpu_abort(env, "Maintenance exception while in user mode. "
1411 "Aborting\n");
1412 break;
1413 case POWERPC_EXCP_STOP: /* stop translation */
1414 /* We did invalidate the instruction cache. Go on */
1415 break;
1416 case POWERPC_EXCP_BRANCH: /* branch instruction: */
1417 /* We just stopped because of a branch. Go on */
1418 break;
1419 case POWERPC_EXCP_SYSCALL_USER:
1420 /* system call in user-mode emulation */
1421 /* WARNING:
1422 * PPC ABI uses overflow flag in cr0 to signal an error
1423 * in syscalls.
1424 */
1425 #if 0
1426 printf("syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n", env->gpr[0],
1427 env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6]);
1428 #endif
1429 env->crf[0] &= ~0x1;
1430 ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
1431 env->gpr[5], env->gpr[6], env->gpr[7],
1432 env->gpr[8]);
1433 if (ret > (uint32_t)(-515)) {
1434 env->crf[0] |= 0x1;
1435 ret = -ret;
1436 }
1437 env->gpr[3] = ret;
1438 #if 0
1439 printf("syscall returned 0x%08x (%d)\n", ret, ret);
1440 #endif
1441 break;
1442 case EXCP_DEBUG:
1443 {
1444 int sig;
1445
1446 sig = gdb_handlesig(env, TARGET_SIGTRAP);
1447 if (sig) {
1448 info.si_signo = sig;
1449 info.si_errno = 0;
1450 info.si_code = TARGET_TRAP_BRKPT;
1451 queue_signal(env, info.si_signo, &info);
1452 }
1453 }
1454 break;
1455 case EXCP_INTERRUPT:
1456 /* just indicate that signals should be handled asap */
1457 break;
1458 default:
1459 cpu_abort(env, "Unknown exception 0x%d. Aborting\n", trapnr);
1460 break;
1461 }
1462 process_pending_signals(env);
1463 }
1464 }
1465 #endif
1466
1467 #ifdef TARGET_MIPS
1468
1469 #define MIPS_SYS(name, args) args,
1470
1471 static const uint8_t mips_syscall_args[] = {
1472 MIPS_SYS(sys_syscall , 0) /* 4000 */
1473 MIPS_SYS(sys_exit , 1)
1474 MIPS_SYS(sys_fork , 0)
1475 MIPS_SYS(sys_read , 3)
1476 MIPS_SYS(sys_write , 3)
1477 MIPS_SYS(sys_open , 3) /* 4005 */
1478 MIPS_SYS(sys_close , 1)
1479 MIPS_SYS(sys_waitpid , 3)
1480 MIPS_SYS(sys_creat , 2)
1481 MIPS_SYS(sys_link , 2)
1482 MIPS_SYS(sys_unlink , 1) /* 4010 */
1483 MIPS_SYS(sys_execve , 0)
1484 MIPS_SYS(sys_chdir , 1)
1485 MIPS_SYS(sys_time , 1)
1486 MIPS_SYS(sys_mknod , 3)
1487 MIPS_SYS(sys_chmod , 2) /* 4015 */
1488 MIPS_SYS(sys_lchown , 3)
1489 MIPS_SYS(sys_ni_syscall , 0)
1490 MIPS_SYS(sys_ni_syscall , 0) /* was sys_stat */
1491 MIPS_SYS(sys_lseek , 3)
1492 MIPS_SYS(sys_getpid , 0) /* 4020 */
1493 MIPS_SYS(sys_mount , 5)
1494 MIPS_SYS(sys_oldumount , 1)
1495 MIPS_SYS(sys_setuid , 1)
1496 MIPS_SYS(sys_getuid , 0)
1497 MIPS_SYS(sys_stime , 1) /* 4025 */
1498 MIPS_SYS(sys_ptrace , 4)
1499 MIPS_SYS(sys_alarm , 1)
1500 MIPS_SYS(sys_ni_syscall , 0) /* was sys_fstat */
1501 MIPS_SYS(sys_pause , 0)
1502 MIPS_SYS(sys_utime , 2) /* 4030 */
1503 MIPS_SYS(sys_ni_syscall , 0)
1504 MIPS_SYS(sys_ni_syscall , 0)
1505 MIPS_SYS(sys_access , 2)
1506 MIPS_SYS(sys_nice , 1)
1507 MIPS_SYS(sys_ni_syscall , 0) /* 4035 */
1508 MIPS_SYS(sys_sync , 0)
1509 MIPS_SYS(sys_kill , 2)
1510 MIPS_SYS(sys_rename , 2)
1511 MIPS_SYS(sys_mkdir , 2)
1512 MIPS_SYS(sys_rmdir , 1) /* 4040 */
1513 MIPS_SYS(sys_dup , 1)
1514 MIPS_SYS(sys_pipe , 0)
1515 MIPS_SYS(sys_times , 1)
1516 MIPS_SYS(sys_ni_syscall , 0)
1517 MIPS_SYS(sys_brk , 1) /* 4045 */
1518 MIPS_SYS(sys_setgid , 1)
1519 MIPS_SYS(sys_getgid , 0)
1520 MIPS_SYS(sys_ni_syscall , 0) /* was signal(2) */
1521 MIPS_SYS(sys_geteuid , 0)
1522 MIPS_SYS(sys_getegid , 0) /* 4050 */
1523 MIPS_SYS(sys_acct , 0)
1524 MIPS_SYS(sys_umount , 2)
1525 MIPS_SYS(sys_ni_syscall , 0)
1526 MIPS_SYS(sys_ioctl , 3)
1527 MIPS_SYS(sys_fcntl , 3) /* 4055 */
1528 MIPS_SYS(sys_ni_syscall , 2)
1529 MIPS_SYS(sys_setpgid , 2)
1530 MIPS_SYS(sys_ni_syscall , 0)
1531 MIPS_SYS(sys_olduname , 1)
1532 MIPS_SYS(sys_umask , 1) /* 4060 */
1533 MIPS_SYS(sys_chroot , 1)
1534 MIPS_SYS(sys_ustat , 2)
1535 MIPS_SYS(sys_dup2 , 2)
1536 MIPS_SYS(sys_getppid , 0)
1537 MIPS_SYS(sys_getpgrp , 0) /* 4065 */
1538 MIPS_SYS(sys_setsid , 0)
1539 MIPS_SYS(sys_sigaction , 3)
1540 MIPS_SYS(sys_sgetmask , 0)
1541 MIPS_SYS(sys_ssetmask , 1)
1542 MIPS_SYS(sys_setreuid , 2) /* 4070 */
1543 MIPS_SYS(sys_setregid , 2)
1544 MIPS_SYS(sys_sigsuspend , 0)
1545 MIPS_SYS(sys_sigpending , 1)
1546 MIPS_SYS(sys_sethostname , 2)
1547 MIPS_SYS(sys_setrlimit , 2) /* 4075 */
1548 MIPS_SYS(sys_getrlimit , 2)
1549 MIPS_SYS(sys_getrusage , 2)
1550 MIPS_SYS(sys_gettimeofday, 2)
1551 MIPS_SYS(sys_settimeofday, 2)
1552 MIPS_SYS(sys_getgroups , 2) /* 4080 */
1553 MIPS_SYS(sys_setgroups , 2)
1554 MIPS_SYS(sys_ni_syscall , 0) /* old_select */
1555 MIPS_SYS(sys_symlink , 2)
1556 MIPS_SYS(sys_ni_syscall , 0) /* was sys_lstat */
1557 MIPS_SYS(sys_readlink , 3) /* 4085 */
1558 MIPS_SYS(sys_uselib , 1)
1559 MIPS_SYS(sys_swapon , 2)
1560 MIPS_SYS(sys_reboot , 3)
1561 MIPS_SYS(old_readdir , 3)
1562 MIPS_SYS(old_mmap , 6) /* 4090 */
1563 MIPS_SYS(sys_munmap , 2)
1564 MIPS_SYS(sys_truncate , 2)
1565 MIPS_SYS(sys_ftruncate , 2)
1566 MIPS_SYS(sys_fchmod , 2)
1567 MIPS_SYS(sys_fchown , 3) /* 4095 */
1568 MIPS_SYS(sys_getpriority , 2)
1569 MIPS_SYS(sys_setpriority , 3)
1570 MIPS_SYS(sys_ni_syscall , 0)
1571 MIPS_SYS(sys_statfs , 2)
1572 MIPS_SYS(sys_fstatfs , 2) /* 4100 */
1573 MIPS_SYS(sys_ni_syscall , 0) /* was ioperm(2) */
1574 MIPS_SYS(sys_socketcall , 2)
1575 MIPS_SYS(sys_syslog , 3)
1576 MIPS_SYS(sys_setitimer , 3)
1577 MIPS_SYS(sys_getitimer , 2) /* 4105 */
1578 MIPS_SYS(sys_newstat , 2)
1579 MIPS_SYS(sys_newlstat , 2)
1580 MIPS_SYS(sys_newfstat , 2)
1581 MIPS_SYS(sys_uname , 1)
1582 MIPS_SYS(sys_ni_syscall , 0) /* 4110 was iopl(2) */
1583 MIPS_SYS(sys_vhangup , 0)
1584 MIPS_SYS(sys_ni_syscall , 0) /* was sys_idle() */
1585 MIPS_SYS(sys_ni_syscall , 0) /* was sys_vm86 */
1586 MIPS_SYS(sys_wait4 , 4)
1587 MIPS_SYS(sys_swapoff , 1) /* 4115 */
1588 MIPS_SYS(sys_sysinfo , 1)
1589 MIPS_SYS(sys_ipc , 6)
1590 MIPS_SYS(sys_fsync , 1)
1591 MIPS_SYS(sys_sigreturn , 0)
1592 MIPS_SYS(sys_clone , 0) /* 4120 */
1593 MIPS_SYS(sys_setdomainname, 2)
1594 MIPS_SYS(sys_newuname , 1)
1595 MIPS_SYS(sys_ni_syscall , 0) /* sys_modify_ldt */
1596 MIPS_SYS(sys_adjtimex , 1)
1597 MIPS_SYS(sys_mprotect , 3) /* 4125 */
1598 MIPS_SYS(sys_sigprocmask , 3)
1599 MIPS_SYS(sys_ni_syscall , 0) /* was create_module */
1600 MIPS_SYS(sys_init_module , 5)
1601 MIPS_SYS(sys_delete_module, 1)
1602 MIPS_SYS(sys_ni_syscall , 0) /* 4130 was get_kernel_syms */
1603 MIPS_SYS(sys_quotactl , 0)
1604 MIPS_SYS(sys_getpgid , 1)
1605 MIPS_SYS(sys_fchdir , 1)
1606 MIPS_SYS(sys_bdflush , 2)
1607 MIPS_SYS(sys_sysfs , 3) /* 4135 */
1608 MIPS_SYS(sys_personality , 1)
1609 MIPS_SYS(sys_ni_syscall , 0) /* for afs_syscall */
1610 MIPS_SYS(sys_setfsuid , 1)
1611 MIPS_SYS(sys_setfsgid , 1)
1612 MIPS_SYS(sys_llseek , 5) /* 4140 */
1613 MIPS_SYS(sys_getdents , 3)
1614 MIPS_SYS(sys_select , 5)
1615 MIPS_SYS(sys_flock , 2)
1616 MIPS_SYS(sys_msync , 3)
1617 MIPS_SYS(sys_readv , 3) /* 4145 */
1618 MIPS_SYS(sys_writev , 3)
1619 MIPS_SYS(sys_cacheflush , 3)
1620 MIPS_SYS(sys_cachectl , 3)
1621 MIPS_SYS(sys_sysmips , 4)
1622 MIPS_SYS(sys_ni_syscall , 0) /* 4150 */
1623 MIPS_SYS(sys_getsid , 1)
1624 MIPS_SYS(sys_fdatasync , 0)
1625 MIPS_SYS(sys_sysctl , 1)
1626 MIPS_SYS(sys_mlock , 2)
1627 MIPS_SYS(sys_munlock , 2) /* 4155 */
1628 MIPS_SYS(sys_mlockall , 1)
1629 MIPS_SYS(sys_munlockall , 0)
1630 MIPS_SYS(sys_sched_setparam, 2)
1631 MIPS_SYS(sys_sched_getparam, 2)
1632 MIPS_SYS(sys_sched_setscheduler, 3) /* 4160 */
1633 MIPS_SYS(sys_sched_getscheduler, 1)
1634 MIPS_SYS(sys_sched_yield , 0)
1635 MIPS_SYS(sys_sched_get_priority_max, 1)
1636 MIPS_SYS(sys_sched_get_priority_min, 1)
1637 MIPS_SYS(sys_sched_rr_get_interval, 2) /* 4165 */
1638 MIPS_SYS(sys_nanosleep, 2)
1639 MIPS_SYS(sys_mremap , 4)
1640 MIPS_SYS(sys_accept , 3)
1641 MIPS_SYS(sys_bind , 3)
1642 MIPS_SYS(sys_connect , 3) /* 4170 */
1643 MIPS_SYS(sys_getpeername , 3)
1644 MIPS_SYS(sys_getsockname , 3)
1645 MIPS_SYS(sys_getsockopt , 5)
1646 MIPS_SYS(sys_listen , 2)
1647 MIPS_SYS(sys_recv , 4) /* 4175 */
1648 MIPS_SYS(sys_recvfrom , 6)
1649 MIPS_SYS(sys_recvmsg , 3)
1650 MIPS_SYS(sys_send , 4)
1651 MIPS_SYS(sys_sendmsg , 3)
1652 MIPS_SYS(sys_sendto , 6) /* 4180 */
1653 MIPS_SYS(sys_setsockopt , 5)
1654 MIPS_SYS(sys_shutdown , 2)
1655 MIPS_SYS(sys_socket , 3)
1656 MIPS_SYS(sys_socketpair , 4)
1657 MIPS_SYS(sys_setresuid , 3) /* 4185 */
1658 MIPS_SYS(sys_getresuid , 3)
1659 MIPS_SYS(sys_ni_syscall , 0) /* was sys_query_module */
1660 MIPS_SYS(sys_poll , 3)
1661 MIPS_SYS(sys_nfsservctl , 3)
1662 MIPS_SYS(sys_setresgid , 3) /* 4190 */
1663 MIPS_SYS(sys_getresgid , 3)
1664 MIPS_SYS(sys_prctl , 5)
1665 MIPS_SYS(sys_rt_sigreturn, 0)
1666 MIPS_SYS(sys_rt_sigaction, 4)
1667 MIPS_SYS(sys_rt_sigprocmask, 4) /* 4195 */
1668 MIPS_SYS(sys_rt_sigpending, 2)
1669 MIPS_SYS(sys_rt_sigtimedwait, 4)
1670 MIPS_SYS(sys_rt_sigqueueinfo, 3)
1671 MIPS_SYS(sys_rt_sigsuspend, 0)
1672 MIPS_SYS(sys_pread64 , 6) /* 4200 */
1673 MIPS_SYS(sys_pwrite64 , 6)
1674 MIPS_SYS(sys_chown , 3)
1675 MIPS_SYS(sys_getcwd , 2)
1676 MIPS_SYS(sys_capget , 2)
1677 MIPS_SYS(sys_capset , 2) /* 4205 */
1678 MIPS_SYS(sys_sigaltstack , 0)
1679 MIPS_SYS(sys_sendfile , 4)
1680 MIPS_SYS(sys_ni_syscall , 0)
1681 MIPS_SYS(sys_ni_syscall , 0)
1682 MIPS_SYS(sys_mmap2 , 6) /* 4210 */
1683 MIPS_SYS(sys_truncate64 , 4)
1684 MIPS_SYS(sys_ftruncate64 , 4)
1685 MIPS_SYS(sys_stat64 , 2)
1686 MIPS_SYS(sys_lstat64 , 2)
1687 MIPS_SYS(sys_fstat64 , 2) /* 4215 */
1688 MIPS_SYS(sys_pivot_root , 2)
1689 MIPS_SYS(sys_mincore , 3)
1690 MIPS_SYS(sys_madvise , 3)
1691 MIPS_SYS(sys_getdents64 , 3)
1692 MIPS_SYS(sys_fcntl64 , 3) /* 4220 */
1693 MIPS_SYS(sys_ni_syscall , 0)
1694 MIPS_SYS(sys_gettid , 0)
1695 MIPS_SYS(sys_readahead , 5)
1696 MIPS_SYS(sys_setxattr , 5)
1697 MIPS_SYS(sys_lsetxattr , 5) /* 4225 */
1698 MIPS_SYS(sys_fsetxattr , 5)
1699 MIPS_SYS(sys_getxattr , 4)
1700 MIPS_SYS(sys_lgetxattr , 4)
1701 MIPS_SYS(sys_fgetxattr , 4)
1702 MIPS_SYS(sys_listxattr , 3) /* 4230 */
1703 MIPS_SYS(sys_llistxattr , 3)
1704 MIPS_SYS(sys_flistxattr , 3)
1705 MIPS_SYS(sys_removexattr , 2)
1706 MIPS_SYS(sys_lremovexattr, 2)
1707 MIPS_SYS(sys_fremovexattr, 2) /* 4235 */
1708 MIPS_SYS(sys_tkill , 2)
1709 MIPS_SYS(sys_sendfile64 , 5)
1710 MIPS_SYS(sys_futex , 2)
1711 MIPS_SYS(sys_sched_setaffinity, 3)
1712 MIPS_SYS(sys_sched_getaffinity, 3) /* 4240 */
1713 MIPS_SYS(sys_io_setup , 2)
1714 MIPS_SYS(sys_io_destroy , 1)
1715 MIPS_SYS(sys_io_getevents, 5)
1716 MIPS_SYS(sys_io_submit , 3)
1717 MIPS_SYS(sys_io_cancel , 3) /* 4245 */
1718 MIPS_SYS(sys_exit_group , 1)
1719 MIPS_SYS(sys_lookup_dcookie, 3)
1720 MIPS_SYS(sys_epoll_create, 1)
1721 MIPS_SYS(sys_epoll_ctl , 4)
1722 MIPS_SYS(sys_epoll_wait , 3) /* 4250 */
1723 MIPS_SYS(sys_remap_file_pages, 5)
1724 MIPS_SYS(sys_set_tid_address, 1)
1725 MIPS_SYS(sys_restart_syscall, 0)
1726 MIPS_SYS(sys_fadvise64_64, 7)
1727 MIPS_SYS(sys_statfs64 , 3) /* 4255 */
1728 MIPS_SYS(sys_fstatfs64 , 2)
1729 MIPS_SYS(sys_timer_create, 3)
1730 MIPS_SYS(sys_timer_settime, 4)
1731 MIPS_SYS(sys_timer_gettime, 2)
1732 MIPS_SYS(sys_timer_getoverrun, 1) /* 4260 */
1733 MIPS_SYS(sys_timer_delete, 1)
1734 MIPS_SYS(sys_clock_settime, 2)
1735 MIPS_SYS(sys_clock_gettime, 2)
1736 MIPS_SYS(sys_clock_getres, 2)
1737 MIPS_SYS(sys_clock_nanosleep, 4) /* 4265 */
1738 MIPS_SYS(sys_tgkill , 3)
1739 MIPS_SYS(sys_utimes , 2)
1740 MIPS_SYS(sys_mbind , 4)
1741 MIPS_SYS(sys_ni_syscall , 0) /* sys_get_mempolicy */
1742 MIPS_SYS(sys_ni_syscall , 0) /* 4270 sys_set_mempolicy */
1743 MIPS_SYS(sys_mq_open , 4)
1744 MIPS_SYS(sys_mq_unlink , 1)
1745 MIPS_SYS(sys_mq_timedsend, 5)
1746 MIPS_SYS(sys_mq_timedreceive, 5)
1747 MIPS_SYS(sys_mq_notify , 2) /* 4275 */
1748 MIPS_SYS(sys_mq_getsetattr, 3)
1749 MIPS_SYS(sys_ni_syscall , 0) /* sys_vserver */
1750 MIPS_SYS(sys_waitid , 4)
1751 MIPS_SYS(sys_ni_syscall , 0) /* available, was setaltroot */
1752 MIPS_SYS(sys_add_key , 5)
1753 MIPS_SYS(sys_request_key, 4)
1754 MIPS_SYS(sys_keyctl , 5)
1755 MIPS_SYS(sys_set_thread_area, 1)
1756 MIPS_SYS(sys_inotify_init, 0)
1757 MIPS_SYS(sys_inotify_add_watch, 3) /* 4285 */
1758 MIPS_SYS(sys_inotify_rm_watch, 2)
1759 MIPS_SYS(sys_migrate_pages, 4)
1760 MIPS_SYS(sys_openat, 4)
1761 MIPS_SYS(sys_mkdirat, 3)
1762 MIPS_SYS(sys_mknodat, 4) /* 4290 */
1763 MIPS_SYS(sys_fchownat, 5)
1764 MIPS_SYS(sys_futimesat, 3)
1765 MIPS_SYS(sys_fstatat64, 4)
1766 MIPS_SYS(sys_unlinkat, 3)
1767 MIPS_SYS(sys_renameat, 4) /* 4295 */
1768 MIPS_SYS(sys_linkat, 5)
1769 MIPS_SYS(sys_symlinkat, 3)
1770 MIPS_SYS(sys_readlinkat, 4)
1771 MIPS_SYS(sys_fchmodat, 3)
1772 MIPS_SYS(sys_faccessat, 3) /* 4300 */
1773 MIPS_SYS(sys_pselect6, 6)
1774 MIPS_SYS(sys_ppoll, 5)
1775 MIPS_SYS(sys_unshare, 1)
1776 MIPS_SYS(sys_splice, 4)
1777 MIPS_SYS(sys_sync_file_range, 7) /* 4305 */
1778 MIPS_SYS(sys_tee, 4)
1779 MIPS_SYS(sys_vmsplice, 4)
1780 MIPS_SYS(sys_move_pages, 6)
1781 MIPS_SYS(sys_set_robust_list, 2)
1782 MIPS_SYS(sys_get_robust_list, 3) /* 4310 */
1783 MIPS_SYS(sys_kexec_load, 4)
1784 MIPS_SYS(sys_getcpu, 3)
1785 MIPS_SYS(sys_epoll_pwait, 6)
1786 MIPS_SYS(sys_ioprio_set, 3)
1787 MIPS_SYS(sys_ioprio_get, 2)
1788 };
1789
1790 #undef MIPS_SYS
1791
1792 void cpu_loop(CPUMIPSState *env)
1793 {
1794 target_siginfo_t info;
1795 int trapnr, ret;
1796 unsigned int syscall_num;
1797
1798 for(;;) {
1799 trapnr = cpu_mips_exec(env);
1800 switch(trapnr) {
1801 case EXCP_SYSCALL:
1802 syscall_num = env->active_tc.gpr[2] - 4000;
1803 env->active_tc.PC += 4;
1804 if (syscall_num >= sizeof(mips_syscall_args)) {
1805 ret = -ENOSYS;
1806 } else {
1807 int nb_args;
1808 abi_ulong sp_reg;
1809 abi_ulong arg5 = 0, arg6 = 0, arg7 = 0, arg8 = 0;
1810
1811 nb_args = mips_syscall_args[syscall_num];
1812 sp_reg = env->active_tc.gpr[29];
1813 switch (nb_args) {
1814 /* these arguments are taken from the stack */
1815 /* FIXME - what to do if get_user() fails? */
1816 case 8: get_user_ual(arg8, sp_reg + 28);
1817 case 7: get_user_ual(arg7, sp_reg + 24);
1818 case 6: get_user_ual(arg6, sp_reg + 20);
1819 case 5: get_user_ual(arg5, sp_reg + 16);
1820 default:
1821 break;
1822 }
1823 ret = do_syscall(env, env->active_tc.gpr[2],
1824 env->active_tc.gpr[4],
1825 env->active_tc.gpr[5],
1826 env->active_tc.gpr[6],
1827 env->active_tc.gpr[7],
1828 arg5, arg6/*, arg7, arg8*/);
1829 }
1830 if ((unsigned int)ret >= (unsigned int)(-1133)) {
1831 env->active_tc.gpr[7] = 1; /* error flag */
1832 ret = -ret;
1833 } else {
1834 env->active_tc.gpr[7] = 0; /* error flag */
1835 }
1836 env->active_tc.gpr[2] = ret;
1837 break;
1838 case EXCP_TLBL:
1839 case EXCP_TLBS:
1840 case EXCP_CpU:
1841 case EXCP_RI:
1842 info.si_signo = TARGET_SIGILL;
1843 info.si_errno = 0;
1844 info.si_code = 0;
1845 queue_signal(env, info.si_signo, &info);
1846 break;
1847 case EXCP_INTERRUPT:
1848 /* just indicate that signals should be handled asap */
1849 break;
1850 case EXCP_DEBUG:
1851 {
1852 int sig;
1853
1854 sig = gdb_handlesig (env, TARGET_SIGTRAP);
1855 if (sig)
1856 {
1857 info.si_signo = sig;
1858 info.si_errno = 0;
1859 info.si_code = TARGET_TRAP_BRKPT;
1860 queue_signal(env, info.si_signo, &info);
1861 }
1862 }
1863 break;
1864 default:
1865 // error:
1866 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
1867 trapnr);
1868 cpu_dump_state(env, stderr, fprintf, 0);
1869 abort();
1870 }
1871 process_pending_signals(env);
1872 }
1873 }
1874 #endif
1875
1876 #ifdef TARGET_SH4
1877 void cpu_loop (CPUState *env)
1878 {
1879 int trapnr, ret;
1880 target_siginfo_t info;
1881
1882 while (1) {
1883 trapnr = cpu_sh4_exec (env);
1884
1885 switch (trapnr) {
1886 case 0x160:
1887 env->pc += 2;
1888 ret = do_syscall(env,
1889 env->gregs[3],
1890 env->gregs[4],
1891 env->gregs[5],
1892 env->gregs[6],
1893 env->gregs[7],
1894 env->gregs[0],
1895 env->gregs[1]);
1896 env->gregs[0] = ret;
1897 break;
1898 case EXCP_INTERRUPT:
1899 /* just indicate that signals should be handled asap */
1900 break;
1901 case EXCP_DEBUG:
1902 {
1903 int sig;
1904
1905 sig = gdb_handlesig (env, TARGET_SIGTRAP);
1906 if (sig)
1907 {
1908 info.si_signo = sig;
1909 info.si_errno = 0;
1910 info.si_code = TARGET_TRAP_BRKPT;
1911 queue_signal(env, info.si_signo, &info);
1912 }
1913 }
1914 break;
1915 case 0xa0:
1916 case 0xc0:
1917 info.si_signo = SIGSEGV;
1918 info.si_errno = 0;
1919 info.si_code = TARGET_SEGV_MAPERR;
1920 info._sifields._sigfault._addr = env->tea;
1921 queue_signal(env, info.si_signo, &info);
1922 break;
1923
1924 default:
1925 printf ("Unhandled trap: 0x%x\n", trapnr);
1926 cpu_dump_state(env, stderr, fprintf, 0);
1927 exit (1);
1928 }
1929 process_pending_signals (env);
1930 }
1931 }
1932 #endif
1933
1934 #ifdef TARGET_CRIS
1935 void cpu_loop (CPUState *env)
1936 {
1937 int trapnr, ret;
1938 target_siginfo_t info;
1939
1940 while (1) {
1941 trapnr = cpu_cris_exec (env);
1942 switch (trapnr) {
1943 case 0xaa:
1944 {
1945 info.si_signo = SIGSEGV;
1946 info.si_errno = 0;
1947 /* XXX: check env->error_code */
1948 info.si_code = TARGET_SEGV_MAPERR;
1949 info._sifields._sigfault._addr = env->pregs[PR_EDA];
1950 queue_signal(env, info.si_signo, &info);
1951 }
1952 break;
1953 case EXCP_INTERRUPT:
1954 /* just indicate that signals should be handled asap */
1955 break;
1956 case EXCP_BREAK:
1957 ret = do_syscall(env,
1958 env->regs[9],
1959 env->regs[10],
1960 env->regs[11],
1961 env->regs[12],
1962 env->regs[13],
1963 env->pregs[7],
1964 env->pregs[11]);
1965 env->regs[10] = ret;
1966 break;
1967 case EXCP_DEBUG:
1968 {
1969 int sig;
1970
1971 sig = gdb_handlesig (env, TARGET_SIGTRAP);
1972 if (sig)
1973 {
1974 info.si_signo = sig;
1975 info.si_errno = 0;
1976 info.si_code = TARGET_TRAP_BRKPT;
1977 queue_signal(env, info.si_signo, &info);
1978 }
1979 }
1980 break;
1981 default:
1982 printf ("Unhandled trap: 0x%x\n", trapnr);
1983 cpu_dump_state(env, stderr, fprintf, 0);
1984 exit (1);
1985 }
1986 process_pending_signals (env);
1987 }
1988 }
1989 #endif
1990
1991 #ifdef TARGET_M68K
1992
1993 void cpu_loop(CPUM68KState *env)
1994 {
1995 int trapnr;
1996 unsigned int n;
1997 target_siginfo_t info;
1998 TaskState *ts = env->opaque;
1999
2000 for(;;) {
2001 trapnr = cpu_m68k_exec(env);
2002 switch(trapnr) {
2003 case EXCP_ILLEGAL:
2004 {
2005 if (ts->sim_syscalls) {
2006 uint16_t nr;
2007 nr = lduw(env->pc + 2);
2008 env->pc += 4;
2009 do_m68k_simcall(env, nr);
2010 } else {
2011 goto do_sigill;
2012 }
2013 }
2014 break;
2015 case EXCP_HALT_INSN:
2016 /* Semihosing syscall. */
2017 env->pc += 4;
2018 do_m68k_semihosting(env, env->dregs[0]);
2019 break;
2020 case EXCP_LINEA:
2021 case EXCP_LINEF:
2022 case EXCP_UNSUPPORTED:
2023 do_sigill:
2024 info.si_signo = SIGILL;
2025 info.si_errno = 0;
2026 info.si_code = TARGET_ILL_ILLOPN;
2027 info._sifields._sigfault._addr = env->pc;
2028 queue_signal(env, info.si_signo, &info);
2029 break;
2030 case EXCP_TRAP0:
2031 {
2032 ts->sim_syscalls = 0;
2033 n = env->dregs[0];
2034 env->pc += 2;
2035 env->dregs[0] = do_syscall(env,
2036 n,
2037 env->dregs[1],
2038 env->dregs[2],
2039 env->dregs[3],
2040 env->dregs[4],
2041 env->dregs[5],
2042 env->aregs[0]);
2043 }
2044 break;
2045 case EXCP_INTERRUPT:
2046 /* just indicate that signals should be handled asap */
2047 break;
2048 case EXCP_ACCESS:
2049 {
2050 info.si_signo = SIGSEGV;
2051 info.si_errno = 0;
2052 /* XXX: check env->error_code */
2053 info.si_code = TARGET_SEGV_MAPERR;
2054 info._sifields._sigfault._addr = env->mmu.ar;
2055 queue_signal(env, info.si_signo, &info);
2056 }
2057 break;
2058 case EXCP_DEBUG:
2059 {
2060 int sig;
2061
2062 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2063 if (sig)
2064 {
2065 info.si_signo = sig;
2066 info.si_errno = 0;
2067 info.si_code = TARGET_TRAP_BRKPT;
2068 queue_signal(env, info.si_signo, &info);
2069 }
2070 }
2071 break;
2072 default:
2073 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
2074 trapnr);
2075 cpu_dump_state(env, stderr, fprintf, 0);
2076 abort();
2077 }
2078 process_pending_signals(env);
2079 }
2080 }
2081 #endif /* TARGET_M68K */
2082
2083 #ifdef TARGET_ALPHA
2084 void cpu_loop (CPUState *env)
2085 {
2086 int trapnr;
2087 target_siginfo_t info;
2088
2089 while (1) {
2090 trapnr = cpu_alpha_exec (env);
2091
2092 switch (trapnr) {
2093 case EXCP_RESET:
2094 fprintf(stderr, "Reset requested. Exit\n");
2095 exit(1);
2096 break;
2097 case EXCP_MCHK:
2098 fprintf(stderr, "Machine check exception. Exit\n");
2099 exit(1);
2100 break;
2101 case EXCP_ARITH:
2102 fprintf(stderr, "Arithmetic trap.\n");
2103 exit(1);
2104 break;
2105 case EXCP_HW_INTERRUPT:
2106 fprintf(stderr, "External interrupt. Exit\n");
2107 exit(1);
2108 break;
2109 case EXCP_DFAULT:
2110 fprintf(stderr, "MMU data fault\n");
2111 exit(1);
2112 break;
2113 case EXCP_DTB_MISS_PAL:
2114 fprintf(stderr, "MMU data TLB miss in PALcode\n");
2115 exit(1);
2116 break;
2117 case EXCP_ITB_MISS:
2118 fprintf(stderr, "MMU instruction TLB miss\n");
2119 exit(1);
2120 break;
2121 case EXCP_ITB_ACV:
2122 fprintf(stderr, "MMU instruction access violation\n");
2123 exit(1);
2124 break;
2125 case EXCP_DTB_MISS_NATIVE:
2126 fprintf(stderr, "MMU data TLB miss\n");
2127 exit(1);
2128 break;
2129 case EXCP_UNALIGN:
2130 fprintf(stderr, "Unaligned access\n");
2131 exit(1);
2132 break;
2133 case EXCP_OPCDEC:
2134 fprintf(stderr, "Invalid instruction\n");
2135 exit(1);
2136 break;
2137 case EXCP_FEN:
2138 fprintf(stderr, "Floating-point not allowed\n");
2139 exit(1);
2140 break;
2141 case EXCP_CALL_PAL ... (EXCP_CALL_PALP - 1):
2142 call_pal(env, (trapnr >> 6) | 0x80);
2143 break;
2144 case EXCP_CALL_PALP ... (EXCP_CALL_PALE - 1):
2145 fprintf(stderr, "Privileged call to PALcode\n");
2146 exit(1);
2147 break;
2148 case EXCP_DEBUG:
2149 {
2150 int sig;
2151
2152 sig = gdb_handlesig (env, TARGET_SIGTRAP);
2153 if (sig)
2154 {
2155 info.si_signo = sig;
2156 info.si_errno = 0;
2157 info.si_code = TARGET_TRAP_BRKPT;
2158 queue_signal(env, info.si_signo, &info);
2159 }
2160 }
2161 break;
2162 default:
2163 printf ("Unhandled trap: 0x%x\n", trapnr);
2164 cpu_dump_state(env, stderr, fprintf, 0);
2165 exit (1);
2166 }
2167 process_pending_signals (env);
2168 }
2169 }
2170 #endif /* TARGET_ALPHA */
2171
2172 static void usage(void)
2173 {
2174 printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n"
2175 "usage: qemu-" TARGET_ARCH " [options] program [arguments...]\n"
2176 "Linux CPU emulator (compiled for %s emulation)\n"
2177 "\n"
2178 "Standard options:\n"
2179 "-h print this help\n"
2180 "-g port wait gdb connection to port\n"
2181 "-L path set the elf interpreter prefix (default=%s)\n"
2182 "-s size set the stack size in bytes (default=%ld)\n"
2183 "-cpu model select CPU (-cpu ? for list)\n"
2184 "-drop-ld-preload drop LD_PRELOAD for target process\n"
2185 "\n"
2186 "Debug options:\n"
2187 "-d options activate log (logfile=%s)\n"
2188 "-p pagesize set the host page size to 'pagesize'\n"
2189 "-strace log system calls\n"
2190 "\n"
2191 "Environment variables:\n"
2192 "QEMU_STRACE Print system calls and arguments similar to the\n"
2193 " 'strace' program. Enable by setting to any value.\n"
2194 ,
2195 TARGET_ARCH,
2196 interp_prefix,
2197 x86_stack_size,
2198 DEBUG_LOGFILE);
2199 _exit(1);
2200 }
2201
2202 THREAD CPUState *thread_env;
2203
2204 /* Assumes contents are already zeroed. */
2205 void init_task_state(TaskState *ts)
2206 {
2207 int i;
2208
2209 ts->used = 1;
2210 ts->first_free = ts->sigqueue_table;
2211 for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) {
2212 ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1];
2213 }
2214 ts->sigqueue_table[i].next = NULL;
2215 }
2216
2217 int main(int argc, char **argv)
2218 {
2219 const char *filename;
2220 const char *cpu_model;
2221 struct target_pt_regs regs1, *regs = &regs1;
2222 struct image_info info1, *info = &info1;
2223 TaskState ts1, *ts = &ts1;
2224 CPUState *env;
2225 int optind;
2226 const char *r;
2227 int gdbstub_port = 0;
2228 int drop_ld_preload = 0, environ_count = 0;
2229 char **target_environ, **wrk, **dst;
2230
2231 if (argc <= 1)
2232 usage();
2233
2234 /* init debug */
2235 cpu_set_log_filename(DEBUG_LOGFILE);
2236
2237 cpu_model = NULL;
2238 optind = 1;
2239 for(;;) {
2240 if (optind >= argc)
2241 break;
2242 r = argv[optind];
2243 if (r[0] != '-')
2244 break;
2245 optind++;
2246 r++;
2247 if (!strcmp(r, "-")) {
2248 break;
2249 } else if (!strcmp(r, "d")) {
2250 int mask;
2251 const CPULogItem *item;
2252
2253 if (optind >= argc)
2254 break;
2255
2256 r = argv[optind++];
2257 mask = cpu_str_to_log_mask(r);
2258 if (!mask) {
2259 printf("Log items (comma separated):\n");
2260 for(item = cpu_log_items; item->mask != 0; item++) {
2261 printf("%-10s %s\n", item->name, item->help);
2262 }
2263 exit(1);
2264 }
2265 cpu_set_log(mask);
2266 } else if (!strcmp(r, "s")) {
2267 r = argv[optind++];
2268 x86_stack_size = strtol(r, (char **)&r, 0);
2269 if (x86_stack_size <= 0)
2270 usage();
2271 if (*r == 'M')
2272 x86_stack_size *= 1024 * 1024;
2273 else if (*r == 'k' || *r == 'K')
2274 x86_stack_size *= 1024;
2275 } else if (!strcmp(r, "L")) {
2276 interp_prefix = argv[optind++];
2277 } else if (!strcmp(r, "p")) {
2278 qemu_host_page_size = atoi(argv[optind++]);
2279 if (qemu_host_page_size == 0 ||
2280 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
2281 fprintf(stderr, "page size must be a power of two\n");
2282 exit(1);
2283 }
2284 } else if (!strcmp(r, "g")) {
2285 gdbstub_port = atoi(argv[optind++]);
2286 } else if (!strcmp(r, "r")) {
2287 qemu_uname_release = argv[optind++];
2288 } else if (!strcmp(r, "cpu")) {
2289 cpu_model = argv[optind++];
2290 if (strcmp(cpu_model, "?") == 0) {
2291 /* XXX: implement xxx_cpu_list for targets that still miss it */
2292 #if defined(cpu_list)
2293 cpu_list(stdout, &fprintf);
2294 #endif
2295 _exit(1);
2296 }
2297 } else if (!strcmp(r, "drop-ld-preload")) {
2298 drop_ld_preload = 1;
2299 } else if (!strcmp(r, "strace")) {
2300 do_strace = 1;
2301 } else
2302 {
2303 usage();
2304 }
2305 }
2306 if (optind >= argc)
2307 usage();
2308 filename = argv[optind];
2309
2310 /* Zero out regs */
2311 memset(regs, 0, sizeof(struct target_pt_regs));
2312
2313 /* Zero out image_info */
2314 memset(info, 0, sizeof(struct image_info));
2315
2316 /* Scan interp_prefix dir for replacement files. */
2317 init_paths(interp_prefix);
2318
2319 if (cpu_model == NULL) {
2320 #if defined(TARGET_I386)
2321 #ifdef TARGET_X86_64
2322 cpu_model = "qemu64";
2323 #else
2324 cpu_model = "qemu32";
2325 #endif
2326 #elif defined(TARGET_ARM)
2327 cpu_model = "arm926";
2328 #elif defined(TARGET_M68K)
2329 cpu_model = "any";
2330 #elif defined(TARGET_SPARC)
2331 #ifdef TARGET_SPARC64
2332 cpu_model = "TI UltraSparc II";
2333 #else
2334 cpu_model = "Fujitsu MB86904";
2335 #endif
2336 #elif defined(TARGET_MIPS)
2337 #if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64)
2338 cpu_model = "20Kc";
2339 #else
2340 cpu_model = "24Kf";
2341 #endif
2342 #elif defined(TARGET_PPC)
2343 #ifdef TARGET_PPC64
2344 cpu_model = "970";
2345 #else
2346 cpu_model = "750";
2347 #endif
2348 #else
2349 cpu_model = "any";
2350 #endif
2351 }
2352 cpu_exec_init_all(0);
2353 /* NOTE: we need to init the CPU at this stage to get
2354 qemu_host_page_size */
2355 env = cpu_init(cpu_model);
2356 if (!env) {
2357 fprintf(stderr, "Unable to find CPU definition\n");
2358 exit(1);
2359 }
2360 thread_env = env;
2361
2362 if (getenv("QEMU_STRACE")) {
2363 do_strace = 1;
2364 }
2365
2366 wrk = environ;
2367 while (*(wrk++))
2368 environ_count++;
2369
2370 target_environ = malloc((environ_count + 1) * sizeof(char *));
2371 if (!target_environ)
2372 abort();
2373 for (wrk = environ, dst = target_environ; *wrk; wrk++) {
2374 if (drop_ld_preload && !strncmp(*wrk, "LD_PRELOAD=", 11))
2375 continue;
2376 *(dst++) = strdup(*wrk);
2377 }
2378 *dst = NULL; /* NULL terminate target_environ */
2379
2380 if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) {
2381 printf("Error loading %s\n", filename);
2382 _exit(1);
2383 }
2384
2385 for (wrk = target_environ; *wrk; wrk++) {
2386 free(*wrk);
2387 }
2388
2389 free(target_environ);
2390
2391 if (loglevel) {
2392 page_dump(logfile);
2393
2394 fprintf(logfile, "start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
2395 fprintf(logfile, "end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code);
2396 fprintf(logfile, "start_code 0x" TARGET_ABI_FMT_lx "\n",
2397 info->start_code);
2398 fprintf(logfile, "start_data 0x" TARGET_ABI_FMT_lx "\n",
2399 info->start_data);
2400 fprintf(logfile, "end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data);
2401 fprintf(logfile, "start_stack 0x" TARGET_ABI_FMT_lx "\n",
2402 info->start_stack);
2403 fprintf(logfile, "brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
2404 fprintf(logfile, "entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
2405 }
2406
2407 target_set_brk(info->brk);
2408 syscall_init();
2409 signal_init();
2410
2411 /* build Task State */
2412 memset(ts, 0, sizeof(TaskState));
2413 init_task_state(ts);
2414 ts->info = info;
2415 env->opaque = ts;
2416 env->user_mode_only = 1;
2417
2418 #if defined(TARGET_I386)
2419 cpu_x86_set_cpl(env, 3);
2420
2421 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
2422 env->hflags |= HF_PE_MASK;
2423 if (env->cpuid_features & CPUID_SSE) {
2424 env->cr[4] |= CR4_OSFXSR_MASK;
2425 env->hflags |= HF_OSFXSR_MASK;
2426 }
2427 #ifndef TARGET_ABI32
2428 /* enable 64 bit mode if possible */
2429 if (!(env->cpuid_ext2_features & CPUID_EXT2_LM)) {
2430 fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
2431 exit(1);
2432 }
2433 env->cr[4] |= CR4_PAE_MASK;
2434 env->efer |= MSR_EFER_LMA | MSR_EFER_LME;
2435 env->hflags |= HF_LMA_MASK;
2436 #endif
2437
2438 /* flags setup : we activate the IRQs by default as in user mode */
2439 env->eflags |= IF_MASK;
2440
2441 /* linux register setup */
2442 #ifndef TARGET_ABI32
2443 env->regs[R_EAX] = regs->rax;
2444 env->regs[R_EBX] = regs->rbx;
2445 env->regs[R_ECX] = regs->rcx;
2446 env->regs[R_EDX] = regs->rdx;
2447 env->regs[R_ESI] = regs->rsi;
2448 env->regs[R_EDI] = regs->rdi;
2449 env->regs[R_EBP] = regs->rbp;
2450 env->regs[R_ESP] = regs->rsp;
2451 env->eip = regs->rip;
2452 #else
2453 env->regs[R_EAX] = regs->eax;
2454 env->regs[R_EBX] = regs->ebx;
2455 env->regs[R_ECX] = regs->ecx;
2456 env->regs[R_EDX] = regs->edx;
2457 env->regs[R_ESI] = regs->esi;
2458 env->regs[R_EDI] = regs->edi;
2459 env->regs[R_EBP] = regs->ebp;
2460 env->regs[R_ESP] = regs->esp;
2461 env->eip = regs->eip;
2462 #endif
2463
2464 /* linux interrupt setup */
2465 #ifndef TARGET_ABI32
2466 env->idt.limit = 511;
2467 #else
2468 env->idt.limit = 255;
2469 #endif
2470 env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1),
2471 PROT_READ|PROT_WRITE,
2472 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
2473 idt_table = g2h(env->idt.base);
2474 set_idt(0, 0);
2475 set_idt(1, 0);
2476 set_idt(2, 0);
2477 set_idt(3, 3);
2478 set_idt(4, 3);
2479 set_idt(5, 0);
2480 set_idt(6, 0);
2481 set_idt(7, 0);
2482 set_idt(8, 0);
2483 set_idt(9, 0);
2484 set_idt(10, 0);
2485 set_idt(11, 0);
2486 set_idt(12, 0);
2487 set_idt(13, 0);
2488 set_idt(14, 0);
2489 set_idt(15, 0);
2490 set_idt(16, 0);
2491 set_idt(17, 0);
2492 set_idt(18, 0);
2493 set_idt(19, 0);
2494 set_idt(0x80, 3);
2495
2496 /* linux segment setup */
2497 {
2498 uint64_t *gdt_table;
2499 env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES,
2500 PROT_READ|PROT_WRITE,
2501 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
2502 env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1;
2503 gdt_table = g2h(env->gdt.base);
2504 #ifdef TARGET_ABI32
2505 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
2506 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
2507 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
2508 #else
2509 /* 64 bit code segment */
2510 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
2511 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
2512 DESC_L_MASK |
2513 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
2514 #endif
2515 write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
2516 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
2517 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
2518 }
2519 cpu_x86_load_seg(env, R_CS, __USER_CS);
2520 cpu_x86_load_seg(env, R_SS, __USER_DS);
2521 #ifdef TARGET_ABI32
2522 cpu_x86_load_seg(env, R_DS, __USER_DS);
2523 cpu_x86_load_seg(env, R_ES, __USER_DS);
2524 cpu_x86_load_seg(env, R_FS, __USER_DS);
2525 cpu_x86_load_seg(env, R_GS, __USER_DS);
2526 /* This hack makes Wine work... */
2527 env->segs[R_FS].selector = 0;
2528 #else
2529 cpu_x86_load_seg(env, R_DS, 0);
2530 cpu_x86_load_seg(env, R_ES, 0);
2531 cpu_x86_load_seg(env, R_FS, 0);
2532 cpu_x86_load_seg(env, R_GS, 0);
2533 #endif
2534 #elif defined(TARGET_ARM)
2535 {
2536 int i;
2537 cpsr_write(env, regs->uregs[16], 0xffffffff);
2538 for(i = 0; i < 16; i++) {
2539 env->regs[i] = regs->uregs[i];
2540 }
2541 }
2542 #elif defined(TARGET_SPARC)
2543 {
2544 int i;
2545 env->pc = regs->pc;
2546 env->npc = regs->npc;
2547 env->y = regs->y;
2548 for(i = 0; i < 8; i++)
2549 env->gregs[i] = regs->u_regs[i];
2550 for(i = 0; i < 8; i++)
2551 env->regwptr[i] = regs->u_regs[i + 8];
2552 }
2553 #elif defined(TARGET_PPC)
2554 {
2555 int i;
2556
2557 #if defined(TARGET_PPC64)
2558 #if defined(TARGET_ABI32)
2559 env->msr &= ~((target_ulong)1 << MSR_SF);
2560 #else
2561 env->msr |= (target_ulong)1 << MSR_SF;
2562 #endif
2563 #endif
2564 env->nip = regs->nip;
2565 for(i = 0; i < 32; i++) {
2566 env->gpr[i] = regs->gpr[i];
2567 }
2568 }
2569 #elif defined(TARGET_M68K)
2570 {
2571 env->pc = regs->pc;
2572 env->dregs[0] = regs->d0;
2573 env->dregs[1] = regs->d1;
2574 env->dregs[2] = regs->d2;
2575 env->dregs[3] = regs->d3;
2576 env->dregs[4] = regs->d4;
2577 env->dregs[5] = regs->d5;
2578 env->dregs[6] = regs->d6;
2579 env->dregs[7] = regs->d7;
2580 env->aregs[0] = regs->a0;
2581 env->aregs[1] = regs->a1;
2582 env->aregs[2] = regs->a2;
2583 env->aregs[3] = regs->a3;
2584 env->aregs[4] = regs->a4;
2585 env->aregs[5] = regs->a5;
2586 env->aregs[6] = regs->a6;
2587 env->aregs[7] = regs->usp;
2588 env->sr = regs->sr;
2589 ts->sim_syscalls = 1;
2590 }
2591 #elif defined(TARGET_MIPS)
2592 {
2593 int i;
2594
2595 for(i = 0; i < 32; i++) {
2596 env->active_tc.gpr[i] = regs->regs[i];
2597 }
2598 env->active_tc.PC = regs->cp0_epc;
2599 }
2600 #elif defined(TARGET_SH4)
2601 {
2602 int i;
2603
2604 for(i = 0; i < 16; i++) {
2605 env->gregs[i] = regs->regs[i];
2606 }
2607 env->pc = regs->pc;
2608 }
2609 #elif defined(TARGET_ALPHA)
2610 {
2611 int i;
2612
2613 for(i = 0; i < 28; i++) {
2614 env->ir[i] = ((abi_ulong *)regs)[i];
2615 }
2616 env->ipr[IPR_USP] = regs->usp;
2617 env->ir[30] = regs->usp;
2618 env->pc = regs->pc;
2619 env->unique = regs->unique;
2620 }
2621 #elif defined(TARGET_CRIS)
2622 {
2623 env->regs[0] = regs->r0;
2624 env->regs[1] = regs->r1;
2625 env->regs[2] = regs->r2;
2626 env->regs[3] = regs->r3;
2627 env->regs[4] = regs->r4;
2628 env->regs[5] = regs->r5;
2629 env->regs[6] = regs->r6;
2630 env->regs[7] = regs->r7;
2631 env->regs[8] = regs->r8;
2632 env->regs[9] = regs->r9;
2633 env->regs[10] = regs->r10;
2634 env->regs[11] = regs->r11;
2635 env->regs[12] = regs->r12;
2636 env->regs[13] = regs->r13;
2637 env->regs[14] = info->start_stack;
2638 env->regs[15] = regs->acr;
2639 env->pc = regs->erp;
2640 }
2641 #else
2642 #error unsupported target CPU
2643 #endif
2644
2645 #if defined(TARGET_ARM) || defined(TARGET_M68K)
2646 ts->stack_base = info->start_stack;
2647 ts->heap_base = info->brk;
2648 /* This will be filled in on the first SYS_HEAPINFO call. */
2649 ts->heap_limit = 0;
2650 #endif
2651
2652 if (gdbstub_port) {
2653 gdbserver_start (gdbstub_port);
2654 gdb_handlesig(env, 0);
2655 }
2656 cpu_loop(env);
2657 /* never exits */
2658 return 0;
2659 }
Patches shipped by Fedora