root / bsd-user / main.c @ 31fc12df
History | View | Annotate | Download (29.3 kB)
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., 51 Franklin Street - Fifth Floor, Boston,
|
19 |
* MA 02110-1301, USA.
|
20 |
*/
|
21 |
#include <stdlib.h> |
22 |
#include <stdio.h> |
23 |
#include <stdarg.h> |
24 |
#include <string.h> |
25 |
#include <errno.h> |
26 |
#include <unistd.h> |
27 |
#include <machine/trap.h> |
28 |
#include <sys/types.h> |
29 |
#include <sys/mman.h> |
30 |
|
31 |
#include "qemu.h" |
32 |
#include "qemu-common.h" |
33 |
/* For tb_lock */
|
34 |
#include "exec-all.h" |
35 |
|
36 |
#define DEBUG_LOGFILE "/tmp/qemu.log" |
37 |
|
38 |
int singlestep;
|
39 |
|
40 |
static const char *interp_prefix = CONFIG_QEMU_PREFIX; |
41 |
const char *qemu_uname_release = CONFIG_UNAME_RELEASE; |
42 |
extern char **environ; |
43 |
|
44 |
/* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
|
45 |
we allocate a bigger stack. Need a better solution, for example
|
46 |
by remapping the process stack directly at the right place */
|
47 |
unsigned long x86_stack_size = 512 * 1024; |
48 |
|
49 |
void gemu_log(const char *fmt, ...) |
50 |
{ |
51 |
va_list ap; |
52 |
|
53 |
va_start(ap, fmt); |
54 |
vfprintf(stderr, fmt, ap); |
55 |
va_end(ap); |
56 |
} |
57 |
|
58 |
void cpu_outb(CPUState *env, int addr, int val) |
59 |
{ |
60 |
fprintf(stderr, "outb: port=0x%04x, data=%02x\n", addr, val);
|
61 |
} |
62 |
|
63 |
void cpu_outw(CPUState *env, int addr, int val) |
64 |
{ |
65 |
fprintf(stderr, "outw: port=0x%04x, data=%04x\n", addr, val);
|
66 |
} |
67 |
|
68 |
void cpu_outl(CPUState *env, int addr, int val) |
69 |
{ |
70 |
fprintf(stderr, "outl: port=0x%04x, data=%08x\n", addr, val);
|
71 |
} |
72 |
|
73 |
int cpu_inb(CPUState *env, int addr) |
74 |
{ |
75 |
fprintf(stderr, "inb: port=0x%04x\n", addr);
|
76 |
return 0; |
77 |
} |
78 |
|
79 |
int cpu_inw(CPUState *env, int addr) |
80 |
{ |
81 |
fprintf(stderr, "inw: port=0x%04x\n", addr);
|
82 |
return 0; |
83 |
} |
84 |
|
85 |
int cpu_inl(CPUState *env, int addr) |
86 |
{ |
87 |
fprintf(stderr, "inl: port=0x%04x\n", addr);
|
88 |
return 0; |
89 |
} |
90 |
|
91 |
#if defined(TARGET_I386)
|
92 |
int cpu_get_pic_interrupt(CPUState *env)
|
93 |
{ |
94 |
return -1; |
95 |
} |
96 |
#endif
|
97 |
|
98 |
/* These are no-ops because we are not threadsafe. */
|
99 |
static inline void cpu_exec_start(CPUState *env) |
100 |
{ |
101 |
} |
102 |
|
103 |
static inline void cpu_exec_end(CPUState *env) |
104 |
{ |
105 |
} |
106 |
|
107 |
static inline void start_exclusive(void) |
108 |
{ |
109 |
} |
110 |
|
111 |
static inline void end_exclusive(void) |
112 |
{ |
113 |
} |
114 |
|
115 |
void fork_start(void) |
116 |
{ |
117 |
} |
118 |
|
119 |
void fork_end(int child) |
120 |
{ |
121 |
if (child) {
|
122 |
gdbserver_fork(thread_env); |
123 |
} |
124 |
} |
125 |
|
126 |
void cpu_list_lock(void) |
127 |
{ |
128 |
} |
129 |
|
130 |
void cpu_list_unlock(void) |
131 |
{ |
132 |
} |
133 |
|
134 |
#ifdef TARGET_I386
|
135 |
/***********************************************************/
|
136 |
/* CPUX86 core interface */
|
137 |
|
138 |
void cpu_smm_update(CPUState *env)
|
139 |
{ |
140 |
} |
141 |
|
142 |
uint64_t cpu_get_tsc(CPUX86State *env) |
143 |
{ |
144 |
return cpu_get_real_ticks();
|
145 |
} |
146 |
|
147 |
static void write_dt(void *ptr, unsigned long addr, unsigned long limit, |
148 |
int flags)
|
149 |
{ |
150 |
unsigned int e1, e2; |
151 |
uint32_t *p; |
152 |
e1 = (addr << 16) | (limit & 0xffff); |
153 |
e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); |
154 |
e2 |= flags; |
155 |
p = ptr; |
156 |
p[0] = tswap32(e1);
|
157 |
p[1] = tswap32(e2);
|
158 |
} |
159 |
|
160 |
static uint64_t *idt_table;
|
161 |
#ifdef TARGET_X86_64
|
162 |
static void set_gate64(void *ptr, unsigned int type, unsigned int dpl, |
163 |
uint64_t addr, unsigned int sel) |
164 |
{ |
165 |
uint32_t *p, e1, e2; |
166 |
e1 = (addr & 0xffff) | (sel << 16); |
167 |
e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); |
168 |
p = ptr; |
169 |
p[0] = tswap32(e1);
|
170 |
p[1] = tswap32(e2);
|
171 |
p[2] = tswap32(addr >> 32); |
172 |
p[3] = 0; |
173 |
} |
174 |
/* only dpl matters as we do only user space emulation */
|
175 |
static void set_idt(int n, unsigned int dpl) |
176 |
{ |
177 |
set_gate64(idt_table + n * 2, 0, dpl, 0, 0); |
178 |
} |
179 |
#else
|
180 |
static void set_gate(void *ptr, unsigned int type, unsigned int dpl, |
181 |
uint32_t addr, unsigned int sel) |
182 |
{ |
183 |
uint32_t *p, e1, e2; |
184 |
e1 = (addr & 0xffff) | (sel << 16); |
185 |
e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); |
186 |
p = ptr; |
187 |
p[0] = tswap32(e1);
|
188 |
p[1] = tswap32(e2);
|
189 |
} |
190 |
|
191 |
/* only dpl matters as we do only user space emulation */
|
192 |
static void set_idt(int n, unsigned int dpl) |
193 |
{ |
194 |
set_gate(idt_table + n, 0, dpl, 0, 0); |
195 |
} |
196 |
#endif
|
197 |
|
198 |
void cpu_loop(CPUX86State *env, enum BSDType bsd_type) |
199 |
{ |
200 |
int trapnr;
|
201 |
abi_ulong pc; |
202 |
//target_siginfo_t info;
|
203 |
|
204 |
for(;;) {
|
205 |
trapnr = cpu_x86_exec(env); |
206 |
switch(trapnr) {
|
207 |
case 0x80: |
208 |
/* syscall from int $0x80 */
|
209 |
env->regs[R_EAX] = do_openbsd_syscall(env, |
210 |
env->regs[R_EAX], |
211 |
env->regs[R_EBX], |
212 |
env->regs[R_ECX], |
213 |
env->regs[R_EDX], |
214 |
env->regs[R_ESI], |
215 |
env->regs[R_EDI], |
216 |
env->regs[R_EBP]); |
217 |
break;
|
218 |
#ifndef TARGET_ABI32
|
219 |
case EXCP_SYSCALL:
|
220 |
/* linux syscall from syscall intruction */
|
221 |
env->regs[R_EAX] = do_openbsd_syscall(env, |
222 |
env->regs[R_EAX], |
223 |
env->regs[R_EDI], |
224 |
env->regs[R_ESI], |
225 |
env->regs[R_EDX], |
226 |
env->regs[10],
|
227 |
env->regs[8],
|
228 |
env->regs[9]);
|
229 |
env->eip = env->exception_next_eip; |
230 |
break;
|
231 |
#endif
|
232 |
#if 0
|
233 |
case EXCP0B_NOSEG:
|
234 |
case EXCP0C_STACK:
|
235 |
info.si_signo = SIGBUS;
|
236 |
info.si_errno = 0;
|
237 |
info.si_code = TARGET_SI_KERNEL;
|
238 |
info._sifields._sigfault._addr = 0;
|
239 |
queue_signal(env, info.si_signo, &info);
|
240 |
break;
|
241 |
case EXCP0D_GPF:
|
242 |
/* XXX: potential problem if ABI32 */
|
243 |
#ifndef TARGET_X86_64
|
244 |
if (env->eflags & VM_MASK) {
|
245 |
handle_vm86_fault(env);
|
246 |
} else
|
247 |
#endif
|
248 |
{ |
249 |
info.si_signo = SIGSEGV; |
250 |
info.si_errno = 0;
|
251 |
info.si_code = TARGET_SI_KERNEL; |
252 |
info._sifields._sigfault._addr = 0;
|
253 |
queue_signal(env, info.si_signo, &info); |
254 |
} |
255 |
break;
|
256 |
case EXCP0E_PAGE:
|
257 |
info.si_signo = SIGSEGV; |
258 |
info.si_errno = 0;
|
259 |
if (!(env->error_code & 1)) |
260 |
info.si_code = TARGET_SEGV_MAPERR; |
261 |
else
|
262 |
info.si_code = TARGET_SEGV_ACCERR; |
263 |
info._sifields._sigfault._addr = env->cr[2];
|
264 |
queue_signal(env, info.si_signo, &info); |
265 |
break;
|
266 |
case EXCP00_DIVZ:
|
267 |
#ifndef TARGET_X86_64
|
268 |
if (env->eflags & VM_MASK) {
|
269 |
handle_vm86_trap(env, trapnr); |
270 |
} else
|
271 |
#endif
|
272 |
{ |
273 |
/* division by zero */
|
274 |
info.si_signo = SIGFPE; |
275 |
info.si_errno = 0;
|
276 |
info.si_code = TARGET_FPE_INTDIV; |
277 |
info._sifields._sigfault._addr = env->eip; |
278 |
queue_signal(env, info.si_signo, &info); |
279 |
} |
280 |
break;
|
281 |
case EXCP01_DB:
|
282 |
case EXCP03_INT3:
|
283 |
#ifndef TARGET_X86_64
|
284 |
if (env->eflags & VM_MASK) {
|
285 |
handle_vm86_trap(env, trapnr); |
286 |
} else
|
287 |
#endif
|
288 |
{ |
289 |
info.si_signo = SIGTRAP; |
290 |
info.si_errno = 0;
|
291 |
if (trapnr == EXCP01_DB) {
|
292 |
info.si_code = TARGET_TRAP_BRKPT; |
293 |
info._sifields._sigfault._addr = env->eip; |
294 |
} else {
|
295 |
info.si_code = TARGET_SI_KERNEL; |
296 |
info._sifields._sigfault._addr = 0;
|
297 |
} |
298 |
queue_signal(env, info.si_signo, &info); |
299 |
} |
300 |
break;
|
301 |
case EXCP04_INTO:
|
302 |
case EXCP05_BOUND:
|
303 |
#ifndef TARGET_X86_64
|
304 |
if (env->eflags & VM_MASK) {
|
305 |
handle_vm86_trap(env, trapnr); |
306 |
} else
|
307 |
#endif
|
308 |
{ |
309 |
info.si_signo = SIGSEGV; |
310 |
info.si_errno = 0;
|
311 |
info.si_code = TARGET_SI_KERNEL; |
312 |
info._sifields._sigfault._addr = 0;
|
313 |
queue_signal(env, info.si_signo, &info); |
314 |
} |
315 |
break;
|
316 |
case EXCP06_ILLOP:
|
317 |
info.si_signo = SIGILL; |
318 |
info.si_errno = 0;
|
319 |
info.si_code = TARGET_ILL_ILLOPN; |
320 |
info._sifields._sigfault._addr = env->eip; |
321 |
queue_signal(env, info.si_signo, &info); |
322 |
break;
|
323 |
#endif
|
324 |
case EXCP_INTERRUPT:
|
325 |
/* just indicate that signals should be handled asap */
|
326 |
break;
|
327 |
#if 0
|
328 |
case EXCP_DEBUG:
|
329 |
{
|
330 |
int sig;
|
331 |
|
332 |
sig = gdb_handlesig (env, TARGET_SIGTRAP);
|
333 |
if (sig)
|
334 |
{
|
335 |
info.si_signo = sig;
|
336 |
info.si_errno = 0;
|
337 |
info.si_code = TARGET_TRAP_BRKPT;
|
338 |
queue_signal(env, info.si_signo, &info);
|
339 |
}
|
340 |
}
|
341 |
break;
|
342 |
#endif
|
343 |
default:
|
344 |
pc = env->segs[R_CS].base + env->eip; |
345 |
fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
|
346 |
(long)pc, trapnr);
|
347 |
abort(); |
348 |
} |
349 |
process_pending_signals(env); |
350 |
} |
351 |
} |
352 |
#endif
|
353 |
|
354 |
#ifdef TARGET_SPARC
|
355 |
#define SPARC64_STACK_BIAS 2047 |
356 |
|
357 |
//#define DEBUG_WIN
|
358 |
/* WARNING: dealing with register windows _is_ complicated. More info
|
359 |
can be found at http://www.sics.se/~psm/sparcstack.html */
|
360 |
static inline int get_reg_index(CPUSPARCState *env, int cwp, int index) |
361 |
{ |
362 |
index = (index + cwp * 16) % (16 * env->nwindows); |
363 |
/* wrap handling : if cwp is on the last window, then we use the
|
364 |
registers 'after' the end */
|
365 |
if (index < 8 && env->cwp == env->nwindows - 1) |
366 |
index += 16 * env->nwindows;
|
367 |
return index;
|
368 |
} |
369 |
|
370 |
/* save the register window 'cwp1' */
|
371 |
static inline void save_window_offset(CPUSPARCState *env, int cwp1) |
372 |
{ |
373 |
unsigned int i; |
374 |
abi_ulong sp_ptr; |
375 |
|
376 |
sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
|
377 |
#ifdef TARGET_SPARC64
|
378 |
if (sp_ptr & 3) |
379 |
sp_ptr += SPARC64_STACK_BIAS; |
380 |
#endif
|
381 |
#if defined(DEBUG_WIN)
|
382 |
printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n", |
383 |
sp_ptr, cwp1); |
384 |
#endif
|
385 |
for(i = 0; i < 16; i++) { |
386 |
/* FIXME - what to do if put_user() fails? */
|
387 |
put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
|
388 |
sp_ptr += sizeof(abi_ulong);
|
389 |
} |
390 |
} |
391 |
|
392 |
static void save_window(CPUSPARCState *env) |
393 |
{ |
394 |
#ifndef TARGET_SPARC64
|
395 |
unsigned int new_wim; |
396 |
new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) & |
397 |
((1LL << env->nwindows) - 1); |
398 |
save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
|
399 |
env->wim = new_wim; |
400 |
#else
|
401 |
save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
|
402 |
env->cansave++; |
403 |
env->canrestore--; |
404 |
#endif
|
405 |
} |
406 |
|
407 |
static void restore_window(CPUSPARCState *env) |
408 |
{ |
409 |
#ifndef TARGET_SPARC64
|
410 |
unsigned int new_wim; |
411 |
#endif
|
412 |
unsigned int i, cwp1; |
413 |
abi_ulong sp_ptr; |
414 |
|
415 |
#ifndef TARGET_SPARC64
|
416 |
new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) & |
417 |
((1LL << env->nwindows) - 1); |
418 |
#endif
|
419 |
|
420 |
/* restore the invalid window */
|
421 |
cwp1 = cpu_cwp_inc(env, env->cwp + 1);
|
422 |
sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
|
423 |
#ifdef TARGET_SPARC64
|
424 |
if (sp_ptr & 3) |
425 |
sp_ptr += SPARC64_STACK_BIAS; |
426 |
#endif
|
427 |
#if defined(DEBUG_WIN)
|
428 |
printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n", |
429 |
sp_ptr, cwp1); |
430 |
#endif
|
431 |
for(i = 0; i < 16; i++) { |
432 |
/* FIXME - what to do if get_user() fails? */
|
433 |
get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
|
434 |
sp_ptr += sizeof(abi_ulong);
|
435 |
} |
436 |
#ifdef TARGET_SPARC64
|
437 |
env->canrestore++; |
438 |
if (env->cleanwin < env->nwindows - 1) |
439 |
env->cleanwin++; |
440 |
env->cansave--; |
441 |
#else
|
442 |
env->wim = new_wim; |
443 |
#endif
|
444 |
} |
445 |
|
446 |
static void flush_windows(CPUSPARCState *env) |
447 |
{ |
448 |
int offset, cwp1;
|
449 |
|
450 |
offset = 1;
|
451 |
for(;;) {
|
452 |
/* if restore would invoke restore_window(), then we can stop */
|
453 |
cwp1 = cpu_cwp_inc(env, env->cwp + offset); |
454 |
#ifndef TARGET_SPARC64
|
455 |
if (env->wim & (1 << cwp1)) |
456 |
break;
|
457 |
#else
|
458 |
if (env->canrestore == 0) |
459 |
break;
|
460 |
env->cansave++; |
461 |
env->canrestore--; |
462 |
#endif
|
463 |
save_window_offset(env, cwp1); |
464 |
offset++; |
465 |
} |
466 |
cwp1 = cpu_cwp_inc(env, env->cwp + 1);
|
467 |
#ifndef TARGET_SPARC64
|
468 |
/* set wim so that restore will reload the registers */
|
469 |
env->wim = 1 << cwp1;
|
470 |
#endif
|
471 |
#if defined(DEBUG_WIN)
|
472 |
printf("flush_windows: nb=%d\n", offset - 1); |
473 |
#endif
|
474 |
} |
475 |
|
476 |
void cpu_loop(CPUSPARCState *env, enum BSDType bsd_type) |
477 |
{ |
478 |
int trapnr, ret, syscall_nr;
|
479 |
//target_siginfo_t info;
|
480 |
|
481 |
while (1) { |
482 |
trapnr = cpu_sparc_exec (env); |
483 |
|
484 |
switch (trapnr) {
|
485 |
#ifndef TARGET_SPARC64
|
486 |
case 0x80: |
487 |
#else
|
488 |
case 0x100: |
489 |
#endif
|
490 |
syscall_nr = env->gregs[1];
|
491 |
if (bsd_type == target_freebsd)
|
492 |
ret = do_freebsd_syscall(env, syscall_nr, |
493 |
env->regwptr[0], env->regwptr[1], |
494 |
env->regwptr[2], env->regwptr[3], |
495 |
env->regwptr[4], env->regwptr[5]); |
496 |
else if (bsd_type == target_netbsd) |
497 |
ret = do_netbsd_syscall(env, syscall_nr, |
498 |
env->regwptr[0], env->regwptr[1], |
499 |
env->regwptr[2], env->regwptr[3], |
500 |
env->regwptr[4], env->regwptr[5]); |
501 |
else { //if (bsd_type == target_openbsd) |
502 |
#if defined(TARGET_SPARC64)
|
503 |
syscall_nr &= ~(TARGET_OPENBSD_SYSCALL_G7RFLAG | |
504 |
TARGET_OPENBSD_SYSCALL_G2RFLAG); |
505 |
#endif
|
506 |
ret = do_openbsd_syscall(env, syscall_nr, |
507 |
env->regwptr[0], env->regwptr[1], |
508 |
env->regwptr[2], env->regwptr[3], |
509 |
env->regwptr[4], env->regwptr[5]); |
510 |
} |
511 |
if ((unsigned int)ret >= (unsigned int)(-515)) { |
512 |
#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
|
513 |
env->xcc |= PSR_CARRY; |
514 |
#else
|
515 |
env->psr |= PSR_CARRY; |
516 |
#endif
|
517 |
} else {
|
518 |
#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
|
519 |
env->xcc &= ~PSR_CARRY; |
520 |
#else
|
521 |
env->psr &= ~PSR_CARRY; |
522 |
#endif
|
523 |
} |
524 |
env->regwptr[0] = ret;
|
525 |
/* next instruction */
|
526 |
#if defined(TARGET_SPARC64)
|
527 |
if (bsd_type == target_openbsd &&
|
528 |
env->gregs[1] & TARGET_OPENBSD_SYSCALL_G2RFLAG) {
|
529 |
env->pc = env->gregs[2];
|
530 |
env->npc = env->pc + 4;
|
531 |
} else if (bsd_type == target_openbsd && |
532 |
env->gregs[1] & TARGET_OPENBSD_SYSCALL_G7RFLAG) {
|
533 |
env->pc = env->gregs[7];
|
534 |
env->npc = env->pc + 4;
|
535 |
} else {
|
536 |
env->pc = env->npc; |
537 |
env->npc = env->npc + 4;
|
538 |
} |
539 |
#else
|
540 |
env->pc = env->npc; |
541 |
env->npc = env->npc + 4;
|
542 |
#endif
|
543 |
break;
|
544 |
case 0x83: /* flush windows */ |
545 |
#ifdef TARGET_ABI32
|
546 |
case 0x103: |
547 |
#endif
|
548 |
flush_windows(env); |
549 |
/* next instruction */
|
550 |
env->pc = env->npc; |
551 |
env->npc = env->npc + 4;
|
552 |
break;
|
553 |
#ifndef TARGET_SPARC64
|
554 |
case TT_WIN_OVF: /* window overflow */ |
555 |
save_window(env); |
556 |
break;
|
557 |
case TT_WIN_UNF: /* window underflow */ |
558 |
restore_window(env); |
559 |
break;
|
560 |
case TT_TFAULT:
|
561 |
case TT_DFAULT:
|
562 |
#if 0
|
563 |
{
|
564 |
info.si_signo = SIGSEGV;
|
565 |
info.si_errno = 0;
|
566 |
/* XXX: check env->error_code */
|
567 |
info.si_code = TARGET_SEGV_MAPERR;
|
568 |
info._sifields._sigfault._addr = env->mmuregs[4];
|
569 |
queue_signal(env, info.si_signo, &info);
|
570 |
}
|
571 |
#endif
|
572 |
break;
|
573 |
#else
|
574 |
case TT_SPILL: /* window overflow */ |
575 |
save_window(env); |
576 |
break;
|
577 |
case TT_FILL: /* window underflow */ |
578 |
restore_window(env); |
579 |
break;
|
580 |
case TT_TFAULT:
|
581 |
case TT_DFAULT:
|
582 |
#if 0
|
583 |
{
|
584 |
info.si_signo = SIGSEGV;
|
585 |
info.si_errno = 0;
|
586 |
/* XXX: check env->error_code */
|
587 |
info.si_code = TARGET_SEGV_MAPERR;
|
588 |
if (trapnr == TT_DFAULT)
|
589 |
info._sifields._sigfault._addr = env->dmmuregs[4];
|
590 |
else
|
591 |
info._sifields._sigfault._addr = env->tsptr->tpc;
|
592 |
//queue_signal(env, info.si_signo, &info);
|
593 |
}
|
594 |
#endif
|
595 |
break;
|
596 |
#endif
|
597 |
case EXCP_INTERRUPT:
|
598 |
/* just indicate that signals should be handled asap */
|
599 |
break;
|
600 |
case EXCP_DEBUG:
|
601 |
{ |
602 |
int sig;
|
603 |
|
604 |
sig = gdb_handlesig (env, TARGET_SIGTRAP); |
605 |
#if 0
|
606 |
if (sig)
|
607 |
{
|
608 |
info.si_signo = sig;
|
609 |
info.si_errno = 0;
|
610 |
info.si_code = TARGET_TRAP_BRKPT;
|
611 |
//queue_signal(env, info.si_signo, &info);
|
612 |
}
|
613 |
#endif
|
614 |
} |
615 |
break;
|
616 |
default:
|
617 |
printf ("Unhandled trap: 0x%x\n", trapnr);
|
618 |
cpu_dump_state(env, stderr, fprintf, 0);
|
619 |
exit (1);
|
620 |
} |
621 |
process_pending_signals (env); |
622 |
} |
623 |
} |
624 |
|
625 |
#endif
|
626 |
|
627 |
static void usage(void) |
628 |
{ |
629 |
printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n" |
630 |
"usage: qemu-" TARGET_ARCH " [options] program [arguments...]\n" |
631 |
"BSD CPU emulator (compiled for %s emulation)\n"
|
632 |
"\n"
|
633 |
"Standard options:\n"
|
634 |
"-h print this help\n"
|
635 |
"-g port wait gdb connection to port\n"
|
636 |
"-L path set the elf interpreter prefix (default=%s)\n"
|
637 |
"-s size set the stack size in bytes (default=%ld)\n"
|
638 |
"-cpu model select CPU (-cpu ? for list)\n"
|
639 |
"-drop-ld-preload drop LD_PRELOAD for target process\n"
|
640 |
"-bsd type select emulated BSD type FreeBSD/NetBSD/OpenBSD (default)\n"
|
641 |
"\n"
|
642 |
"Debug options:\n"
|
643 |
"-d options activate log (logfile=%s)\n"
|
644 |
"-p pagesize set the host page size to 'pagesize'\n"
|
645 |
"-singlestep always run in singlestep mode\n"
|
646 |
"-strace log system calls\n"
|
647 |
"\n"
|
648 |
"Environment variables:\n"
|
649 |
"QEMU_STRACE Print system calls and arguments similar to the\n"
|
650 |
" 'strace' program. Enable by setting to any value.\n"
|
651 |
, |
652 |
TARGET_ARCH, |
653 |
interp_prefix, |
654 |
x86_stack_size, |
655 |
DEBUG_LOGFILE); |
656 |
exit(1);
|
657 |
} |
658 |
|
659 |
THREAD CPUState *thread_env; |
660 |
|
661 |
/* Assumes contents are already zeroed. */
|
662 |
void init_task_state(TaskState *ts)
|
663 |
{ |
664 |
int i;
|
665 |
|
666 |
ts->used = 1;
|
667 |
ts->first_free = ts->sigqueue_table; |
668 |
for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) { |
669 |
ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1];
|
670 |
} |
671 |
ts->sigqueue_table[i].next = NULL;
|
672 |
} |
673 |
|
674 |
int main(int argc, char **argv) |
675 |
{ |
676 |
const char *filename; |
677 |
const char *cpu_model; |
678 |
struct target_pt_regs regs1, *regs = ®s1;
|
679 |
struct image_info info1, *info = &info1;
|
680 |
TaskState ts1, *ts = &ts1; |
681 |
CPUState *env; |
682 |
int optind;
|
683 |
const char *r; |
684 |
int gdbstub_port = 0; |
685 |
int drop_ld_preload = 0, environ_count = 0; |
686 |
char **target_environ, **wrk, **dst;
|
687 |
enum BSDType bsd_type = target_openbsd;
|
688 |
|
689 |
if (argc <= 1) |
690 |
usage(); |
691 |
|
692 |
/* init debug */
|
693 |
cpu_set_log_filename(DEBUG_LOGFILE); |
694 |
|
695 |
cpu_model = NULL;
|
696 |
optind = 1;
|
697 |
for(;;) {
|
698 |
if (optind >= argc)
|
699 |
break;
|
700 |
r = argv[optind]; |
701 |
if (r[0] != '-') |
702 |
break;
|
703 |
optind++; |
704 |
r++; |
705 |
if (!strcmp(r, "-")) { |
706 |
break;
|
707 |
} else if (!strcmp(r, "d")) { |
708 |
int mask;
|
709 |
const CPULogItem *item;
|
710 |
|
711 |
if (optind >= argc)
|
712 |
break;
|
713 |
|
714 |
r = argv[optind++]; |
715 |
mask = cpu_str_to_log_mask(r); |
716 |
if (!mask) {
|
717 |
printf("Log items (comma separated):\n");
|
718 |
for(item = cpu_log_items; item->mask != 0; item++) { |
719 |
printf("%-10s %s\n", item->name, item->help);
|
720 |
} |
721 |
exit(1);
|
722 |
} |
723 |
cpu_set_log(mask); |
724 |
} else if (!strcmp(r, "s")) { |
725 |
r = argv[optind++]; |
726 |
x86_stack_size = strtol(r, (char **)&r, 0); |
727 |
if (x86_stack_size <= 0) |
728 |
usage(); |
729 |
if (*r == 'M') |
730 |
x86_stack_size *= 1024 * 1024; |
731 |
else if (*r == 'k' || *r == 'K') |
732 |
x86_stack_size *= 1024;
|
733 |
} else if (!strcmp(r, "L")) { |
734 |
interp_prefix = argv[optind++]; |
735 |
} else if (!strcmp(r, "p")) { |
736 |
qemu_host_page_size = atoi(argv[optind++]); |
737 |
if (qemu_host_page_size == 0 || |
738 |
(qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { |
739 |
fprintf(stderr, "page size must be a power of two\n");
|
740 |
exit(1);
|
741 |
} |
742 |
} else if (!strcmp(r, "g")) { |
743 |
gdbstub_port = atoi(argv[optind++]); |
744 |
} else if (!strcmp(r, "r")) { |
745 |
qemu_uname_release = argv[optind++]; |
746 |
} else if (!strcmp(r, "cpu")) { |
747 |
cpu_model = argv[optind++]; |
748 |
if (strcmp(cpu_model, "?") == 0) { |
749 |
/* XXX: implement xxx_cpu_list for targets that still miss it */
|
750 |
#if defined(cpu_list)
|
751 |
cpu_list(stdout, &fprintf); |
752 |
#endif
|
753 |
exit(1);
|
754 |
} |
755 |
} else if (!strcmp(r, "drop-ld-preload")) { |
756 |
drop_ld_preload = 1;
|
757 |
} else if (!strcmp(r, "bsd")) { |
758 |
if (!strcasecmp(argv[optind], "freebsd")) { |
759 |
bsd_type = target_freebsd; |
760 |
} else if (!strcasecmp(argv[optind], "netbsd")) { |
761 |
bsd_type = target_netbsd; |
762 |
} else if (!strcasecmp(argv[optind], "openbsd")) { |
763 |
bsd_type = target_openbsd; |
764 |
} else {
|
765 |
usage(); |
766 |
} |
767 |
optind++; |
768 |
} else if (!strcmp(r, "singlestep")) { |
769 |
singlestep = 1;
|
770 |
} else if (!strcmp(r, "strace")) { |
771 |
do_strace = 1;
|
772 |
} else
|
773 |
{ |
774 |
usage(); |
775 |
} |
776 |
} |
777 |
if (optind >= argc)
|
778 |
usage(); |
779 |
filename = argv[optind]; |
780 |
|
781 |
/* Zero out regs */
|
782 |
memset(regs, 0, sizeof(struct target_pt_regs)); |
783 |
|
784 |
/* Zero out image_info */
|
785 |
memset(info, 0, sizeof(struct image_info)); |
786 |
|
787 |
/* Scan interp_prefix dir for replacement files. */
|
788 |
init_paths(interp_prefix); |
789 |
|
790 |
if (cpu_model == NULL) { |
791 |
#if defined(TARGET_I386)
|
792 |
#ifdef TARGET_X86_64
|
793 |
cpu_model = "qemu64";
|
794 |
#else
|
795 |
cpu_model = "qemu32";
|
796 |
#endif
|
797 |
#elif defined(TARGET_SPARC)
|
798 |
#ifdef TARGET_SPARC64
|
799 |
cpu_model = "TI UltraSparc II";
|
800 |
#else
|
801 |
cpu_model = "Fujitsu MB86904";
|
802 |
#endif
|
803 |
#else
|
804 |
cpu_model = "any";
|
805 |
#endif
|
806 |
} |
807 |
cpu_exec_init_all(0);
|
808 |
/* NOTE: we need to init the CPU at this stage to get
|
809 |
qemu_host_page_size */
|
810 |
env = cpu_init(cpu_model); |
811 |
if (!env) {
|
812 |
fprintf(stderr, "Unable to find CPU definition\n");
|
813 |
exit(1);
|
814 |
} |
815 |
thread_env = env; |
816 |
|
817 |
if (getenv("QEMU_STRACE")) { |
818 |
do_strace = 1;
|
819 |
} |
820 |
|
821 |
wrk = environ; |
822 |
while (*(wrk++))
|
823 |
environ_count++; |
824 |
|
825 |
target_environ = malloc((environ_count + 1) * sizeof(char *)); |
826 |
if (!target_environ)
|
827 |
abort(); |
828 |
for (wrk = environ, dst = target_environ; *wrk; wrk++) {
|
829 |
if (drop_ld_preload && !strncmp(*wrk, "LD_PRELOAD=", 11)) |
830 |
continue;
|
831 |
*(dst++) = strdup(*wrk); |
832 |
} |
833 |
*dst = NULL; /* NULL terminate target_environ */ |
834 |
|
835 |
if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) { |
836 |
printf("Error loading %s\n", filename);
|
837 |
_exit(1);
|
838 |
} |
839 |
|
840 |
for (wrk = target_environ; *wrk; wrk++) {
|
841 |
free(*wrk); |
842 |
} |
843 |
|
844 |
free(target_environ); |
845 |
|
846 |
if (qemu_log_enabled()) {
|
847 |
log_page_dump(); |
848 |
|
849 |
qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk); |
850 |
qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code); |
851 |
qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n", |
852 |
info->start_code); |
853 |
qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n", |
854 |
info->start_data); |
855 |
qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data); |
856 |
qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n", |
857 |
info->start_stack); |
858 |
qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk); |
859 |
qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry); |
860 |
} |
861 |
|
862 |
target_set_brk(info->brk); |
863 |
syscall_init(); |
864 |
signal_init(); |
865 |
|
866 |
/* build Task State */
|
867 |
memset(ts, 0, sizeof(TaskState)); |
868 |
init_task_state(ts); |
869 |
ts->info = info; |
870 |
env->opaque = ts; |
871 |
|
872 |
#if defined(TARGET_I386)
|
873 |
cpu_x86_set_cpl(env, 3);
|
874 |
|
875 |
env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
|
876 |
env->hflags |= HF_PE_MASK; |
877 |
if (env->cpuid_features & CPUID_SSE) {
|
878 |
env->cr[4] |= CR4_OSFXSR_MASK;
|
879 |
env->hflags |= HF_OSFXSR_MASK; |
880 |
} |
881 |
#ifndef TARGET_ABI32
|
882 |
/* enable 64 bit mode if possible */
|
883 |
if (!(env->cpuid_ext2_features & CPUID_EXT2_LM)) {
|
884 |
fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
|
885 |
exit(1);
|
886 |
} |
887 |
env->cr[4] |= CR4_PAE_MASK;
|
888 |
env->efer |= MSR_EFER_LMA | MSR_EFER_LME; |
889 |
env->hflags |= HF_LMA_MASK; |
890 |
#endif
|
891 |
|
892 |
/* flags setup : we activate the IRQs by default as in user mode */
|
893 |
env->eflags |= IF_MASK; |
894 |
|
895 |
/* linux register setup */
|
896 |
#ifndef TARGET_ABI32
|
897 |
env->regs[R_EAX] = regs->rax; |
898 |
env->regs[R_EBX] = regs->rbx; |
899 |
env->regs[R_ECX] = regs->rcx; |
900 |
env->regs[R_EDX] = regs->rdx; |
901 |
env->regs[R_ESI] = regs->rsi; |
902 |
env->regs[R_EDI] = regs->rdi; |
903 |
env->regs[R_EBP] = regs->rbp; |
904 |
env->regs[R_ESP] = regs->rsp; |
905 |
env->eip = regs->rip; |
906 |
#else
|
907 |
env->regs[R_EAX] = regs->eax; |
908 |
env->regs[R_EBX] = regs->ebx; |
909 |
env->regs[R_ECX] = regs->ecx; |
910 |
env->regs[R_EDX] = regs->edx; |
911 |
env->regs[R_ESI] = regs->esi; |
912 |
env->regs[R_EDI] = regs->edi; |
913 |
env->regs[R_EBP] = regs->ebp; |
914 |
env->regs[R_ESP] = regs->esp; |
915 |
env->eip = regs->eip; |
916 |
#endif
|
917 |
|
918 |
/* linux interrupt setup */
|
919 |
#ifndef TARGET_ABI32
|
920 |
env->idt.limit = 511;
|
921 |
#else
|
922 |
env->idt.limit = 255;
|
923 |
#endif
|
924 |
env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1), |
925 |
PROT_READ|PROT_WRITE, |
926 |
MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); |
927 |
idt_table = g2h(env->idt.base); |
928 |
set_idt(0, 0); |
929 |
set_idt(1, 0); |
930 |
set_idt(2, 0); |
931 |
set_idt(3, 3); |
932 |
set_idt(4, 3); |
933 |
set_idt(5, 0); |
934 |
set_idt(6, 0); |
935 |
set_idt(7, 0); |
936 |
set_idt(8, 0); |
937 |
set_idt(9, 0); |
938 |
set_idt(10, 0); |
939 |
set_idt(11, 0); |
940 |
set_idt(12, 0); |
941 |
set_idt(13, 0); |
942 |
set_idt(14, 0); |
943 |
set_idt(15, 0); |
944 |
set_idt(16, 0); |
945 |
set_idt(17, 0); |
946 |
set_idt(18, 0); |
947 |
set_idt(19, 0); |
948 |
set_idt(0x80, 3); |
949 |
|
950 |
/* linux segment setup */
|
951 |
{ |
952 |
uint64_t *gdt_table; |
953 |
env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES, |
954 |
PROT_READ|PROT_WRITE, |
955 |
MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); |
956 |
env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1; |
957 |
gdt_table = g2h(env->gdt.base); |
958 |
#ifdef TARGET_ABI32
|
959 |
write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, |
960 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
961 |
(3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); |
962 |
#else
|
963 |
/* 64 bit code segment */
|
964 |
write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, |
965 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
966 |
DESC_L_MASK | |
967 |
(3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); |
968 |
#endif
|
969 |
write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff, |
970 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
971 |
(3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); |
972 |
} |
973 |
|
974 |
cpu_x86_load_seg(env, R_CS, __USER_CS); |
975 |
cpu_x86_load_seg(env, R_SS, __USER_DS); |
976 |
#ifdef TARGET_ABI32
|
977 |
cpu_x86_load_seg(env, R_DS, __USER_DS); |
978 |
cpu_x86_load_seg(env, R_ES, __USER_DS); |
979 |
cpu_x86_load_seg(env, R_FS, __USER_DS); |
980 |
cpu_x86_load_seg(env, R_GS, __USER_DS); |
981 |
/* This hack makes Wine work... */
|
982 |
env->segs[R_FS].selector = 0;
|
983 |
#else
|
984 |
cpu_x86_load_seg(env, R_DS, 0);
|
985 |
cpu_x86_load_seg(env, R_ES, 0);
|
986 |
cpu_x86_load_seg(env, R_FS, 0);
|
987 |
cpu_x86_load_seg(env, R_GS, 0);
|
988 |
#endif
|
989 |
#elif defined(TARGET_SPARC)
|
990 |
{ |
991 |
int i;
|
992 |
env->pc = regs->pc; |
993 |
env->npc = regs->npc; |
994 |
env->y = regs->y; |
995 |
for(i = 0; i < 8; i++) |
996 |
env->gregs[i] = regs->u_regs[i]; |
997 |
for(i = 0; i < 8; i++) |
998 |
env->regwptr[i] = regs->u_regs[i + 8];
|
999 |
} |
1000 |
#else
|
1001 |
#error unsupported target CPU
|
1002 |
#endif
|
1003 |
|
1004 |
if (gdbstub_port) {
|
1005 |
gdbserver_start (gdbstub_port); |
1006 |
gdb_handlesig(env, 0);
|
1007 |
} |
1008 |
cpu_loop(env, bsd_type); |
1009 |
/* never exits */
|
1010 |
return 0; |
1011 |
} |