root / linux-user / main.c @ 192c7bd9
History | View | Annotate | Download (39.2 kB)
1 |
/*
|
---|---|
2 |
* qemu user main
|
3 |
*
|
4 |
* Copyright (c) 2003 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 |
|
27 |
#include "qemu.h" |
28 |
|
29 |
#define DEBUG_LOGFILE "/tmp/qemu.log" |
30 |
|
31 |
#ifdef __APPLE__
|
32 |
#include <crt_externs.h> |
33 |
# define environ (*_NSGetEnviron())
|
34 |
#endif
|
35 |
|
36 |
static const char *interp_prefix = CONFIG_QEMU_PREFIX; |
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 |
long __preinit_array_start[0]; |
48 |
long __preinit_array_end[0]; |
49 |
long __init_array_start[0]; |
50 |
long __init_array_end[0]; |
51 |
long __fini_array_start[0]; |
52 |
long __fini_array_end[0]; |
53 |
#endif
|
54 |
|
55 |
/* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
|
56 |
we allocate a bigger stack. Need a better solution, for example
|
57 |
by remapping the process stack directly at the right place */
|
58 |
unsigned long x86_stack_size = 512 * 1024; |
59 |
|
60 |
void gemu_log(const char *fmt, ...) |
61 |
{ |
62 |
va_list ap; |
63 |
|
64 |
va_start(ap, fmt); |
65 |
vfprintf(stderr, fmt, ap); |
66 |
va_end(ap); |
67 |
} |
68 |
|
69 |
void cpu_outb(CPUState *env, int addr, int val) |
70 |
{ |
71 |
fprintf(stderr, "outb: port=0x%04x, data=%02x\n", addr, val);
|
72 |
} |
73 |
|
74 |
void cpu_outw(CPUState *env, int addr, int val) |
75 |
{ |
76 |
fprintf(stderr, "outw: port=0x%04x, data=%04x\n", addr, val);
|
77 |
} |
78 |
|
79 |
void cpu_outl(CPUState *env, int addr, int val) |
80 |
{ |
81 |
fprintf(stderr, "outl: port=0x%04x, data=%08x\n", addr, val);
|
82 |
} |
83 |
|
84 |
int cpu_inb(CPUState *env, int addr) |
85 |
{ |
86 |
fprintf(stderr, "inb: port=0x%04x\n", addr);
|
87 |
return 0; |
88 |
} |
89 |
|
90 |
int cpu_inw(CPUState *env, int addr) |
91 |
{ |
92 |
fprintf(stderr, "inw: port=0x%04x\n", addr);
|
93 |
return 0; |
94 |
} |
95 |
|
96 |
int cpu_inl(CPUState *env, int addr) |
97 |
{ |
98 |
fprintf(stderr, "inl: port=0x%04x\n", addr);
|
99 |
return 0; |
100 |
} |
101 |
|
102 |
int cpu_get_pic_interrupt(CPUState *env)
|
103 |
{ |
104 |
return -1; |
105 |
} |
106 |
|
107 |
/* timers for rdtsc */
|
108 |
|
109 |
#if defined(__i386__)
|
110 |
|
111 |
int64_t cpu_get_real_ticks(void)
|
112 |
{ |
113 |
int64_t val; |
114 |
asm volatile ("rdtsc" : "=A" (val)); |
115 |
return val;
|
116 |
} |
117 |
|
118 |
#elif defined(__x86_64__)
|
119 |
|
120 |
int64_t cpu_get_real_ticks(void)
|
121 |
{ |
122 |
uint32_t low,high; |
123 |
int64_t val; |
124 |
asm volatile("rdtsc" : "=a" (low), "=d" (high)); |
125 |
val = high; |
126 |
val <<= 32;
|
127 |
val |= low; |
128 |
return val;
|
129 |
} |
130 |
|
131 |
#else
|
132 |
|
133 |
static uint64_t emu_time;
|
134 |
|
135 |
int64_t cpu_get_real_ticks(void)
|
136 |
{ |
137 |
return emu_time++;
|
138 |
} |
139 |
|
140 |
#endif
|
141 |
|
142 |
#ifdef TARGET_I386
|
143 |
/***********************************************************/
|
144 |
/* CPUX86 core interface */
|
145 |
|
146 |
uint64_t cpu_get_tsc(CPUX86State *env) |
147 |
{ |
148 |
return cpu_get_real_ticks();
|
149 |
} |
150 |
|
151 |
static void write_dt(void *ptr, unsigned long addr, unsigned long limit, |
152 |
int flags)
|
153 |
{ |
154 |
unsigned int e1, e2; |
155 |
e1 = (addr << 16) | (limit & 0xffff); |
156 |
e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); |
157 |
e2 |= flags; |
158 |
stl((uint8_t *)ptr, e1); |
159 |
stl((uint8_t *)ptr + 4, e2);
|
160 |
} |
161 |
|
162 |
static void set_gate(void *ptr, unsigned int type, unsigned int dpl, |
163 |
unsigned long addr, unsigned int sel) |
164 |
{ |
165 |
unsigned int e1, e2; |
166 |
e1 = (addr & 0xffff) | (sel << 16); |
167 |
e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); |
168 |
stl((uint8_t *)ptr, e1); |
169 |
stl((uint8_t *)ptr + 4, e2);
|
170 |
} |
171 |
|
172 |
uint64_t gdt_table[6];
|
173 |
uint64_t idt_table[256];
|
174 |
|
175 |
/* only dpl matters as we do only user space emulation */
|
176 |
static void set_idt(int n, unsigned int dpl) |
177 |
{ |
178 |
set_gate(idt_table + n, 0, dpl, 0, 0); |
179 |
} |
180 |
|
181 |
void cpu_loop(CPUX86State *env)
|
182 |
{ |
183 |
int trapnr;
|
184 |
target_ulong pc; |
185 |
target_siginfo_t info; |
186 |
|
187 |
for(;;) {
|
188 |
trapnr = cpu_x86_exec(env); |
189 |
switch(trapnr) {
|
190 |
case 0x80: |
191 |
/* linux syscall */
|
192 |
env->regs[R_EAX] = do_syscall(env, |
193 |
env->regs[R_EAX], |
194 |
env->regs[R_EBX], |
195 |
env->regs[R_ECX], |
196 |
env->regs[R_EDX], |
197 |
env->regs[R_ESI], |
198 |
env->regs[R_EDI], |
199 |
env->regs[R_EBP]); |
200 |
break;
|
201 |
case EXCP0B_NOSEG:
|
202 |
case EXCP0C_STACK:
|
203 |
info.si_signo = SIGBUS; |
204 |
info.si_errno = 0;
|
205 |
info.si_code = TARGET_SI_KERNEL; |
206 |
info._sifields._sigfault._addr = 0;
|
207 |
queue_signal(info.si_signo, &info); |
208 |
break;
|
209 |
case EXCP0D_GPF:
|
210 |
if (env->eflags & VM_MASK) {
|
211 |
handle_vm86_fault(env); |
212 |
} else {
|
213 |
info.si_signo = SIGSEGV; |
214 |
info.si_errno = 0;
|
215 |
info.si_code = TARGET_SI_KERNEL; |
216 |
info._sifields._sigfault._addr = 0;
|
217 |
queue_signal(info.si_signo, &info); |
218 |
} |
219 |
break;
|
220 |
case EXCP0E_PAGE:
|
221 |
info.si_signo = SIGSEGV; |
222 |
info.si_errno = 0;
|
223 |
if (!(env->error_code & 1)) |
224 |
info.si_code = TARGET_SEGV_MAPERR; |
225 |
else
|
226 |
info.si_code = TARGET_SEGV_ACCERR; |
227 |
info._sifields._sigfault._addr = env->cr[2];
|
228 |
queue_signal(info.si_signo, &info); |
229 |
break;
|
230 |
case EXCP00_DIVZ:
|
231 |
if (env->eflags & VM_MASK) {
|
232 |
handle_vm86_trap(env, trapnr); |
233 |
} else {
|
234 |
/* division by zero */
|
235 |
info.si_signo = SIGFPE; |
236 |
info.si_errno = 0;
|
237 |
info.si_code = TARGET_FPE_INTDIV; |
238 |
info._sifields._sigfault._addr = env->eip; |
239 |
queue_signal(info.si_signo, &info); |
240 |
} |
241 |
break;
|
242 |
case EXCP01_SSTP:
|
243 |
case EXCP03_INT3:
|
244 |
if (env->eflags & VM_MASK) {
|
245 |
handle_vm86_trap(env, trapnr); |
246 |
} else {
|
247 |
info.si_signo = SIGTRAP; |
248 |
info.si_errno = 0;
|
249 |
if (trapnr == EXCP01_SSTP) {
|
250 |
info.si_code = TARGET_TRAP_BRKPT; |
251 |
info._sifields._sigfault._addr = env->eip; |
252 |
} else {
|
253 |
info.si_code = TARGET_SI_KERNEL; |
254 |
info._sifields._sigfault._addr = 0;
|
255 |
} |
256 |
queue_signal(info.si_signo, &info); |
257 |
} |
258 |
break;
|
259 |
case EXCP04_INTO:
|
260 |
case EXCP05_BOUND:
|
261 |
if (env->eflags & VM_MASK) {
|
262 |
handle_vm86_trap(env, trapnr); |
263 |
} else {
|
264 |
info.si_signo = SIGSEGV; |
265 |
info.si_errno = 0;
|
266 |
info.si_code = TARGET_SI_KERNEL; |
267 |
info._sifields._sigfault._addr = 0;
|
268 |
queue_signal(info.si_signo, &info); |
269 |
} |
270 |
break;
|
271 |
case EXCP06_ILLOP:
|
272 |
info.si_signo = SIGILL; |
273 |
info.si_errno = 0;
|
274 |
info.si_code = TARGET_ILL_ILLOPN; |
275 |
info._sifields._sigfault._addr = env->eip; |
276 |
queue_signal(info.si_signo, &info); |
277 |
break;
|
278 |
case EXCP_INTERRUPT:
|
279 |
/* just indicate that signals should be handled asap */
|
280 |
break;
|
281 |
case EXCP_DEBUG:
|
282 |
{ |
283 |
int sig;
|
284 |
|
285 |
sig = gdb_handlesig (env, TARGET_SIGTRAP); |
286 |
if (sig)
|
287 |
{ |
288 |
info.si_signo = sig; |
289 |
info.si_errno = 0;
|
290 |
info.si_code = TARGET_TRAP_BRKPT; |
291 |
queue_signal(info.si_signo, &info); |
292 |
} |
293 |
} |
294 |
break;
|
295 |
default:
|
296 |
pc = env->segs[R_CS].base + env->eip; |
297 |
fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
|
298 |
(long)pc, trapnr);
|
299 |
abort(); |
300 |
} |
301 |
process_pending_signals(env); |
302 |
} |
303 |
} |
304 |
#endif
|
305 |
|
306 |
#ifdef TARGET_ARM
|
307 |
|
308 |
/* XXX: find a better solution */
|
309 |
extern void tb_invalidate_page_range(target_ulong start, target_ulong end); |
310 |
|
311 |
static void arm_cache_flush(target_ulong start, target_ulong last) |
312 |
{ |
313 |
target_ulong addr, last1; |
314 |
|
315 |
if (last < start)
|
316 |
return;
|
317 |
addr = start; |
318 |
for(;;) {
|
319 |
last1 = ((addr + TARGET_PAGE_SIZE) & TARGET_PAGE_MASK) - 1;
|
320 |
if (last1 > last)
|
321 |
last1 = last; |
322 |
tb_invalidate_page_range(addr, last1 + 1);
|
323 |
if (last1 == last)
|
324 |
break;
|
325 |
addr = last1 + 1;
|
326 |
} |
327 |
} |
328 |
|
329 |
void cpu_loop(CPUARMState *env)
|
330 |
{ |
331 |
int trapnr;
|
332 |
unsigned int n, insn; |
333 |
target_siginfo_t info; |
334 |
|
335 |
for(;;) {
|
336 |
trapnr = cpu_arm_exec(env); |
337 |
switch(trapnr) {
|
338 |
case EXCP_UDEF:
|
339 |
{ |
340 |
TaskState *ts = env->opaque; |
341 |
uint32_t opcode; |
342 |
|
343 |
/* we handle the FPU emulation here, as Linux */
|
344 |
/* we get the opcode */
|
345 |
opcode = ldl_raw((uint8_t *)env->regs[15]);
|
346 |
|
347 |
if (EmulateAll(opcode, &ts->fpa, env->regs) == 0) { |
348 |
info.si_signo = SIGILL; |
349 |
info.si_errno = 0;
|
350 |
info.si_code = TARGET_ILL_ILLOPN; |
351 |
info._sifields._sigfault._addr = env->regs[15];
|
352 |
queue_signal(info.si_signo, &info); |
353 |
} else {
|
354 |
/* increment PC */
|
355 |
env->regs[15] += 4; |
356 |
} |
357 |
} |
358 |
break;
|
359 |
case EXCP_SWI:
|
360 |
{ |
361 |
/* system call */
|
362 |
if (env->thumb) {
|
363 |
insn = lduw((void *)(env->regs[15] - 2)); |
364 |
n = insn & 0xff;
|
365 |
} else {
|
366 |
insn = ldl((void *)(env->regs[15] - 4)); |
367 |
n = insn & 0xffffff;
|
368 |
} |
369 |
|
370 |
if (n == ARM_NR_cacheflush) {
|
371 |
arm_cache_flush(env->regs[0], env->regs[1]); |
372 |
} else if (n == ARM_NR_semihosting |
373 |
|| n == ARM_NR_thumb_semihosting) { |
374 |
env->regs[0] = do_arm_semihosting (env);
|
375 |
} else if (n >= ARM_SYSCALL_BASE |
376 |
|| (env->thumb && n == ARM_THUMB_SYSCALL)) { |
377 |
/* linux syscall */
|
378 |
if (env->thumb) {
|
379 |
n = env->regs[7];
|
380 |
} else {
|
381 |
n -= ARM_SYSCALL_BASE; |
382 |
} |
383 |
env->regs[0] = do_syscall(env,
|
384 |
n, |
385 |
env->regs[0],
|
386 |
env->regs[1],
|
387 |
env->regs[2],
|
388 |
env->regs[3],
|
389 |
env->regs[4],
|
390 |
env->regs[5]);
|
391 |
} else {
|
392 |
goto error;
|
393 |
} |
394 |
} |
395 |
break;
|
396 |
case EXCP_INTERRUPT:
|
397 |
/* just indicate that signals should be handled asap */
|
398 |
break;
|
399 |
case EXCP_PREFETCH_ABORT:
|
400 |
case EXCP_DATA_ABORT:
|
401 |
{ |
402 |
info.si_signo = SIGSEGV; |
403 |
info.si_errno = 0;
|
404 |
/* XXX: check env->error_code */
|
405 |
info.si_code = TARGET_SEGV_MAPERR; |
406 |
info._sifields._sigfault._addr = env->cp15_6; |
407 |
queue_signal(info.si_signo, &info); |
408 |
} |
409 |
break;
|
410 |
case EXCP_DEBUG:
|
411 |
{ |
412 |
int sig;
|
413 |
|
414 |
sig = gdb_handlesig (env, TARGET_SIGTRAP); |
415 |
if (sig)
|
416 |
{ |
417 |
info.si_signo = sig; |
418 |
info.si_errno = 0;
|
419 |
info.si_code = TARGET_TRAP_BRKPT; |
420 |
queue_signal(info.si_signo, &info); |
421 |
} |
422 |
} |
423 |
break;
|
424 |
default:
|
425 |
error:
|
426 |
fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
|
427 |
trapnr); |
428 |
cpu_dump_state(env, stderr, fprintf, 0);
|
429 |
abort(); |
430 |
} |
431 |
process_pending_signals(env); |
432 |
} |
433 |
} |
434 |
|
435 |
#endif
|
436 |
|
437 |
#ifdef TARGET_SPARC
|
438 |
|
439 |
//#define DEBUG_WIN
|
440 |
|
441 |
/* WARNING: dealing with register windows _is_ complicated. More info
|
442 |
can be found at http://www.sics.se/~psm/sparcstack.html */
|
443 |
static inline int get_reg_index(CPUSPARCState *env, int cwp, int index) |
444 |
{ |
445 |
index = (index + cwp * 16) & (16 * NWINDOWS - 1); |
446 |
/* wrap handling : if cwp is on the last window, then we use the
|
447 |
registers 'after' the end */
|
448 |
if (index < 8 && env->cwp == (NWINDOWS - 1)) |
449 |
index += (16 * NWINDOWS);
|
450 |
return index;
|
451 |
} |
452 |
|
453 |
/* save the register window 'cwp1' */
|
454 |
static inline void save_window_offset(CPUSPARCState *env, int cwp1) |
455 |
{ |
456 |
unsigned int i; |
457 |
uint32_t *sp_ptr; |
458 |
|
459 |
sp_ptr = (uint32_t *)(env->regbase[get_reg_index(env, cwp1, 6)]);
|
460 |
#if defined(DEBUG_WIN)
|
461 |
printf("win_overflow: sp_ptr=0x%x save_cwp=%d\n",
|
462 |
(int)sp_ptr, cwp1);
|
463 |
#endif
|
464 |
for(i = 0; i < 16; i++) { |
465 |
put_user(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
|
466 |
sp_ptr++; |
467 |
} |
468 |
} |
469 |
|
470 |
static void save_window(CPUSPARCState *env) |
471 |
{ |
472 |
unsigned int new_wim; |
473 |
new_wim = ((env->wim >> 1) | (env->wim << (NWINDOWS - 1))) & |
474 |
((1LL << NWINDOWS) - 1); |
475 |
save_window_offset(env, (env->cwp - 2) & (NWINDOWS - 1)); |
476 |
env->wim = new_wim; |
477 |
} |
478 |
|
479 |
static void restore_window(CPUSPARCState *env) |
480 |
{ |
481 |
unsigned int new_wim, i, cwp1; |
482 |
uint32_t *sp_ptr, reg; |
483 |
|
484 |
new_wim = ((env->wim << 1) | (env->wim >> (NWINDOWS - 1))) & |
485 |
((1LL << NWINDOWS) - 1); |
486 |
|
487 |
/* restore the invalid window */
|
488 |
cwp1 = (env->cwp + 1) & (NWINDOWS - 1); |
489 |
sp_ptr = (uint32_t *)(env->regbase[get_reg_index(env, cwp1, 6)]);
|
490 |
#if defined(DEBUG_WIN)
|
491 |
printf("win_underflow: sp_ptr=0x%x load_cwp=%d\n",
|
492 |
(int)sp_ptr, cwp1);
|
493 |
#endif
|
494 |
for(i = 0; i < 16; i++) { |
495 |
get_user(reg, sp_ptr); |
496 |
env->regbase[get_reg_index(env, cwp1, 8 + i)] = reg;
|
497 |
sp_ptr++; |
498 |
} |
499 |
env->wim = new_wim; |
500 |
} |
501 |
|
502 |
static void flush_windows(CPUSPARCState *env) |
503 |
{ |
504 |
int offset, cwp1;
|
505 |
|
506 |
offset = 1;
|
507 |
for(;;) {
|
508 |
/* if restore would invoke restore_window(), then we can stop */
|
509 |
cwp1 = (env->cwp + offset) & (NWINDOWS - 1);
|
510 |
if (env->wim & (1 << cwp1)) |
511 |
break;
|
512 |
save_window_offset(env, cwp1); |
513 |
offset++; |
514 |
} |
515 |
/* set wim so that restore will reload the registers */
|
516 |
cwp1 = (env->cwp + 1) & (NWINDOWS - 1); |
517 |
env->wim = 1 << cwp1;
|
518 |
#if defined(DEBUG_WIN)
|
519 |
printf("flush_windows: nb=%d\n", offset - 1); |
520 |
#endif
|
521 |
} |
522 |
|
523 |
void cpu_loop (CPUSPARCState *env)
|
524 |
{ |
525 |
int trapnr, ret;
|
526 |
target_siginfo_t info; |
527 |
|
528 |
while (1) { |
529 |
trapnr = cpu_sparc_exec (env); |
530 |
|
531 |
switch (trapnr) {
|
532 |
case 0x88: |
533 |
case 0x90: |
534 |
ret = do_syscall (env, env->gregs[1],
|
535 |
env->regwptr[0], env->regwptr[1], |
536 |
env->regwptr[2], env->regwptr[3], |
537 |
env->regwptr[4], env->regwptr[5]); |
538 |
if ((unsigned int)ret >= (unsigned int)(-515)) { |
539 |
env->psr |= PSR_CARRY; |
540 |
ret = -ret; |
541 |
} else {
|
542 |
env->psr &= ~PSR_CARRY; |
543 |
} |
544 |
env->regwptr[0] = ret;
|
545 |
/* next instruction */
|
546 |
env->pc = env->npc; |
547 |
env->npc = env->npc + 4;
|
548 |
break;
|
549 |
case 0x83: /* flush windows */ |
550 |
flush_windows(env); |
551 |
/* next instruction */
|
552 |
env->pc = env->npc; |
553 |
env->npc = env->npc + 4;
|
554 |
break;
|
555 |
case TT_WIN_OVF: /* window overflow */ |
556 |
save_window(env); |
557 |
break;
|
558 |
case TT_WIN_UNF: /* window underflow */ |
559 |
restore_window(env); |
560 |
break;
|
561 |
case TT_TFAULT:
|
562 |
case TT_DFAULT:
|
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(info.si_signo, &info); |
570 |
} |
571 |
break;
|
572 |
case 0x100: // XXX, why do we get these? |
573 |
break;
|
574 |
case EXCP_DEBUG:
|
575 |
{ |
576 |
int sig;
|
577 |
|
578 |
sig = gdb_handlesig (env, TARGET_SIGTRAP); |
579 |
if (sig)
|
580 |
{ |
581 |
info.si_signo = sig; |
582 |
info.si_errno = 0;
|
583 |
info.si_code = TARGET_TRAP_BRKPT; |
584 |
queue_signal(info.si_signo, &info); |
585 |
} |
586 |
} |
587 |
break;
|
588 |
default:
|
589 |
printf ("Unhandled trap: 0x%x\n", trapnr);
|
590 |
cpu_dump_state(env, stderr, fprintf, 0);
|
591 |
exit (1);
|
592 |
} |
593 |
process_pending_signals (env); |
594 |
} |
595 |
} |
596 |
|
597 |
#endif
|
598 |
|
599 |
#ifdef TARGET_PPC
|
600 |
|
601 |
static inline uint64_t cpu_ppc_get_tb (CPUState *env) |
602 |
{ |
603 |
/* TO FIX */
|
604 |
return 0; |
605 |
} |
606 |
|
607 |
uint32_t cpu_ppc_load_tbl (CPUState *env) |
608 |
{ |
609 |
return cpu_ppc_get_tb(env) & 0xFFFFFFFF; |
610 |
} |
611 |
|
612 |
uint32_t cpu_ppc_load_tbu (CPUState *env) |
613 |
{ |
614 |
return cpu_ppc_get_tb(env) >> 32; |
615 |
} |
616 |
|
617 |
static void cpu_ppc_store_tb (CPUState *env, uint64_t value) |
618 |
{ |
619 |
/* TO FIX */
|
620 |
} |
621 |
|
622 |
void cpu_ppc_store_tbu (CPUState *env, uint32_t value)
|
623 |
{ |
624 |
cpu_ppc_store_tb(env, ((uint64_t)value << 32) | cpu_ppc_load_tbl(env));
|
625 |
} |
626 |
|
627 |
void cpu_ppc_store_tbl (CPUState *env, uint32_t value)
|
628 |
{ |
629 |
cpu_ppc_store_tb(env, ((uint64_t)cpu_ppc_load_tbl(env) << 32) | value);
|
630 |
} |
631 |
|
632 |
uint32_t cpu_ppc_load_decr (CPUState *env) |
633 |
{ |
634 |
/* TO FIX */
|
635 |
return -1; |
636 |
} |
637 |
|
638 |
void cpu_ppc_store_decr (CPUState *env, uint32_t value)
|
639 |
{ |
640 |
/* TO FIX */
|
641 |
} |
642 |
|
643 |
void cpu_loop(CPUPPCState *env)
|
644 |
{ |
645 |
target_siginfo_t info; |
646 |
int trapnr;
|
647 |
uint32_t ret; |
648 |
|
649 |
for(;;) {
|
650 |
trapnr = cpu_ppc_exec(env); |
651 |
if (trapnr != EXCP_SYSCALL_USER && trapnr != EXCP_BRANCH &&
|
652 |
trapnr != EXCP_TRACE) { |
653 |
if (loglevel > 0) { |
654 |
cpu_dump_state(env, logfile, fprintf, 0);
|
655 |
} |
656 |
} |
657 |
switch(trapnr) {
|
658 |
case EXCP_NONE:
|
659 |
break;
|
660 |
case EXCP_SYSCALL_USER:
|
661 |
/* system call */
|
662 |
/* WARNING:
|
663 |
* PPC ABI uses overflow flag in cr0 to signal an error
|
664 |
* in syscalls.
|
665 |
*/
|
666 |
#if 0
|
667 |
printf("syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n", env->gpr[0],
|
668 |
env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6]);
|
669 |
#endif
|
670 |
env->crf[0] &= ~0x1; |
671 |
ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], |
672 |
env->gpr[5], env->gpr[6], env->gpr[7], |
673 |
env->gpr[8]);
|
674 |
if (ret > (uint32_t)(-515)) { |
675 |
env->crf[0] |= 0x1; |
676 |
ret = -ret; |
677 |
} |
678 |
env->gpr[3] = ret;
|
679 |
#if 0
|
680 |
printf("syscall returned 0x%08x (%d)\n", ret, ret);
|
681 |
#endif
|
682 |
break;
|
683 |
case EXCP_RESET:
|
684 |
/* Should not happen ! */
|
685 |
fprintf(stderr, "RESET asked... Stop emulation\n");
|
686 |
if (loglevel)
|
687 |
fprintf(logfile, "RESET asked... Stop emulation\n");
|
688 |
abort(); |
689 |
case EXCP_MACHINE_CHECK:
|
690 |
fprintf(stderr, "Machine check exeption... Stop emulation\n");
|
691 |
if (loglevel)
|
692 |
fprintf(logfile, "RESET asked... Stop emulation\n");
|
693 |
info.si_signo = TARGET_SIGBUS; |
694 |
info.si_errno = 0;
|
695 |
info.si_code = TARGET_BUS_OBJERR; |
696 |
info._sifields._sigfault._addr = env->nip - 4;
|
697 |
queue_signal(info.si_signo, &info); |
698 |
case EXCP_DSI:
|
699 |
fprintf(stderr, "Invalid data memory access: 0x%08x\n", env->spr[DAR]);
|
700 |
if (loglevel) {
|
701 |
fprintf(logfile, "Invalid data memory access: 0x%08x\n",
|
702 |
env->spr[DAR]); |
703 |
} |
704 |
switch (env->error_code & 0xF) { |
705 |
case EXCP_DSI_TRANSLATE:
|
706 |
info.si_signo = TARGET_SIGSEGV; |
707 |
info.si_errno = 0;
|
708 |
info.si_code = TARGET_SEGV_MAPERR; |
709 |
break;
|
710 |
case EXCP_DSI_NOTSUP:
|
711 |
case EXCP_DSI_EXTERNAL:
|
712 |
info.si_signo = TARGET_SIGILL; |
713 |
info.si_errno = 0;
|
714 |
info.si_code = TARGET_ILL_ILLADR; |
715 |
break;
|
716 |
case EXCP_DSI_PROT:
|
717 |
info.si_signo = TARGET_SIGSEGV; |
718 |
info.si_errno = 0;
|
719 |
info.si_code = TARGET_SEGV_ACCERR; |
720 |
break;
|
721 |
case EXCP_DSI_DABR:
|
722 |
info.si_signo = TARGET_SIGTRAP; |
723 |
info.si_errno = 0;
|
724 |
info.si_code = TARGET_TRAP_BRKPT; |
725 |
break;
|
726 |
default:
|
727 |
/* Let's send a regular segfault... */
|
728 |
fprintf(stderr, "Invalid segfault errno (%02x)\n",
|
729 |
env->error_code); |
730 |
if (loglevel) {
|
731 |
fprintf(logfile, "Invalid segfault errno (%02x)\n",
|
732 |
env->error_code); |
733 |
} |
734 |
info.si_signo = TARGET_SIGSEGV; |
735 |
info.si_errno = 0;
|
736 |
info.si_code = TARGET_SEGV_MAPERR; |
737 |
break;
|
738 |
} |
739 |
info._sifields._sigfault._addr = env->nip; |
740 |
queue_signal(info.si_signo, &info); |
741 |
break;
|
742 |
case EXCP_ISI:
|
743 |
fprintf(stderr, "Invalid instruction fetch\n");
|
744 |
if (loglevel)
|
745 |
fprintf(logfile, "Invalid instruction fetch\n");
|
746 |
switch (env->error_code) {
|
747 |
case EXCP_ISI_TRANSLATE:
|
748 |
info.si_signo = TARGET_SIGSEGV; |
749 |
info.si_errno = 0;
|
750 |
info.si_code = TARGET_SEGV_MAPERR; |
751 |
break;
|
752 |
case EXCP_ISI_GUARD:
|
753 |
info.si_signo = TARGET_SIGILL; |
754 |
info.si_errno = 0;
|
755 |
info.si_code = TARGET_ILL_ILLADR; |
756 |
break;
|
757 |
case EXCP_ISI_NOEXEC:
|
758 |
case EXCP_ISI_PROT:
|
759 |
info.si_signo = TARGET_SIGSEGV; |
760 |
info.si_errno = 0;
|
761 |
info.si_code = TARGET_SEGV_ACCERR; |
762 |
break;
|
763 |
default:
|
764 |
/* Let's send a regular segfault... */
|
765 |
fprintf(stderr, "Invalid segfault errno (%02x)\n",
|
766 |
env->error_code); |
767 |
if (loglevel) {
|
768 |
fprintf(logfile, "Invalid segfault errno (%02x)\n",
|
769 |
env->error_code); |
770 |
} |
771 |
info.si_signo = TARGET_SIGSEGV; |
772 |
info.si_errno = 0;
|
773 |
info.si_code = TARGET_SEGV_MAPERR; |
774 |
break;
|
775 |
} |
776 |
info._sifields._sigfault._addr = env->nip - 4;
|
777 |
queue_signal(info.si_signo, &info); |
778 |
break;
|
779 |
case EXCP_EXTERNAL:
|
780 |
/* Should not happen ! */
|
781 |
fprintf(stderr, "External interruption... Stop emulation\n");
|
782 |
if (loglevel)
|
783 |
fprintf(logfile, "External interruption... Stop emulation\n");
|
784 |
abort(); |
785 |
case EXCP_ALIGN:
|
786 |
fprintf(stderr, "Invalid unaligned memory access\n");
|
787 |
if (loglevel)
|
788 |
fprintf(logfile, "Invalid unaligned memory access\n");
|
789 |
info.si_signo = TARGET_SIGBUS; |
790 |
info.si_errno = 0;
|
791 |
info.si_code = TARGET_BUS_ADRALN; |
792 |
info._sifields._sigfault._addr = env->nip - 4;
|
793 |
queue_signal(info.si_signo, &info); |
794 |
break;
|
795 |
case EXCP_PROGRAM:
|
796 |
switch (env->error_code & ~0xF) { |
797 |
case EXCP_FP:
|
798 |
fprintf(stderr, "Program exception\n");
|
799 |
if (loglevel)
|
800 |
fprintf(logfile, "Program exception\n");
|
801 |
/* Set FX */
|
802 |
env->fpscr[7] |= 0x8; |
803 |
/* Finally, update FEX */
|
804 |
if ((((env->fpscr[7] & 0x3) << 3) | (env->fpscr[6] >> 1)) & |
805 |
((env->fpscr[1] << 1) | (env->fpscr[0] >> 3))) |
806 |
env->fpscr[7] |= 0x4; |
807 |
info.si_signo = TARGET_SIGFPE; |
808 |
info.si_errno = 0;
|
809 |
switch (env->error_code & 0xF) { |
810 |
case EXCP_FP_OX:
|
811 |
info.si_code = TARGET_FPE_FLTOVF; |
812 |
break;
|
813 |
case EXCP_FP_UX:
|
814 |
info.si_code = TARGET_FPE_FLTUND; |
815 |
break;
|
816 |
case EXCP_FP_ZX:
|
817 |
case EXCP_FP_VXZDZ:
|
818 |
info.si_code = TARGET_FPE_FLTDIV; |
819 |
break;
|
820 |
case EXCP_FP_XX:
|
821 |
info.si_code = TARGET_FPE_FLTRES; |
822 |
break;
|
823 |
case EXCP_FP_VXSOFT:
|
824 |
info.si_code = TARGET_FPE_FLTINV; |
825 |
break;
|
826 |
case EXCP_FP_VXNAN:
|
827 |
case EXCP_FP_VXISI:
|
828 |
case EXCP_FP_VXIDI:
|
829 |
case EXCP_FP_VXIMZ:
|
830 |
case EXCP_FP_VXVC:
|
831 |
case EXCP_FP_VXSQRT:
|
832 |
case EXCP_FP_VXCVI:
|
833 |
info.si_code = TARGET_FPE_FLTSUB; |
834 |
break;
|
835 |
default:
|
836 |
fprintf(stderr, "Unknown floating point exception "
|
837 |
"(%02x)\n", env->error_code);
|
838 |
if (loglevel) {
|
839 |
fprintf(logfile, "Unknown floating point exception "
|
840 |
"(%02x)\n", env->error_code & 0xF); |
841 |
} |
842 |
} |
843 |
break;
|
844 |
case EXCP_INVAL:
|
845 |
fprintf(stderr, "Invalid instruction\n");
|
846 |
if (loglevel)
|
847 |
fprintf(logfile, "Invalid instruction\n");
|
848 |
info.si_signo = TARGET_SIGILL; |
849 |
info.si_errno = 0;
|
850 |
switch (env->error_code & 0xF) { |
851 |
case EXCP_INVAL_INVAL:
|
852 |
info.si_code = TARGET_ILL_ILLOPC; |
853 |
break;
|
854 |
case EXCP_INVAL_LSWX:
|
855 |
info.si_code = TARGET_ILL_ILLOPN; |
856 |
break;
|
857 |
case EXCP_INVAL_SPR:
|
858 |
info.si_code = TARGET_ILL_PRVREG; |
859 |
break;
|
860 |
case EXCP_INVAL_FP:
|
861 |
info.si_code = TARGET_ILL_COPROC; |
862 |
break;
|
863 |
default:
|
864 |
fprintf(stderr, "Unknown invalid operation (%02x)\n",
|
865 |
env->error_code & 0xF);
|
866 |
if (loglevel) {
|
867 |
fprintf(logfile, "Unknown invalid operation (%02x)\n",
|
868 |
env->error_code & 0xF);
|
869 |
} |
870 |
info.si_code = TARGET_ILL_ILLADR; |
871 |
break;
|
872 |
} |
873 |
break;
|
874 |
case EXCP_PRIV:
|
875 |
fprintf(stderr, "Privilege violation\n");
|
876 |
if (loglevel)
|
877 |
fprintf(logfile, "Privilege violation\n");
|
878 |
info.si_signo = TARGET_SIGILL; |
879 |
info.si_errno = 0;
|
880 |
switch (env->error_code & 0xF) { |
881 |
case EXCP_PRIV_OPC:
|
882 |
info.si_code = TARGET_ILL_PRVOPC; |
883 |
break;
|
884 |
case EXCP_PRIV_REG:
|
885 |
info.si_code = TARGET_ILL_PRVREG; |
886 |
break;
|
887 |
default:
|
888 |
fprintf(stderr, "Unknown privilege violation (%02x)\n",
|
889 |
env->error_code & 0xF);
|
890 |
info.si_code = TARGET_ILL_PRVOPC; |
891 |
break;
|
892 |
} |
893 |
break;
|
894 |
case EXCP_TRAP:
|
895 |
fprintf(stderr, "Tried to call a TRAP\n");
|
896 |
if (loglevel)
|
897 |
fprintf(logfile, "Tried to call a TRAP\n");
|
898 |
abort(); |
899 |
default:
|
900 |
/* Should not happen ! */
|
901 |
fprintf(stderr, "Unknown program exception (%02x)\n",
|
902 |
env->error_code); |
903 |
if (loglevel) {
|
904 |
fprintf(logfile, "Unknwon program exception (%02x)\n",
|
905 |
env->error_code); |
906 |
} |
907 |
abort(); |
908 |
} |
909 |
info._sifields._sigfault._addr = env->nip - 4;
|
910 |
queue_signal(info.si_signo, &info); |
911 |
break;
|
912 |
case EXCP_NO_FP:
|
913 |
fprintf(stderr, "No floating point allowed\n");
|
914 |
if (loglevel)
|
915 |
fprintf(logfile, "No floating point allowed\n");
|
916 |
info.si_signo = TARGET_SIGILL; |
917 |
info.si_errno = 0;
|
918 |
info.si_code = TARGET_ILL_COPROC; |
919 |
info._sifields._sigfault._addr = env->nip - 4;
|
920 |
queue_signal(info.si_signo, &info); |
921 |
break;
|
922 |
case EXCP_DECR:
|
923 |
/* Should not happen ! */
|
924 |
fprintf(stderr, "Decrementer exception\n");
|
925 |
if (loglevel)
|
926 |
fprintf(logfile, "Decrementer exception\n");
|
927 |
abort(); |
928 |
case EXCP_RESA: /* Implementation specific */ |
929 |
/* Should not happen ! */
|
930 |
fprintf(stderr, "RESA exception should never happen !\n");
|
931 |
if (loglevel)
|
932 |
fprintf(logfile, "RESA exception should never happen !\n");
|
933 |
abort(); |
934 |
case EXCP_RESB: /* Implementation specific */ |
935 |
/* Should not happen ! */
|
936 |
fprintf(stderr, "RESB exception should never happen !\n");
|
937 |
if (loglevel)
|
938 |
fprintf(logfile, "RESB exception should never happen !\n");
|
939 |
abort(); |
940 |
case EXCP_TRACE:
|
941 |
/* Do nothing: we use this to trace execution */
|
942 |
break;
|
943 |
case EXCP_FP_ASSIST:
|
944 |
/* Should not happen ! */
|
945 |
fprintf(stderr, "Floating point assist exception\n");
|
946 |
if (loglevel)
|
947 |
fprintf(logfile, "Floating point assist exception\n");
|
948 |
abort(); |
949 |
case EXCP_MTMSR:
|
950 |
/* We reloaded the msr, just go on */
|
951 |
if (msr_pr == 0) { |
952 |
fprintf(stderr, "Tried to go into supervisor mode !\n");
|
953 |
if (loglevel)
|
954 |
fprintf(logfile, "Tried to go into supervisor mode !\n");
|
955 |
abort(); |
956 |
} |
957 |
break;
|
958 |
case EXCP_BRANCH:
|
959 |
/* We stopped because of a jump... */
|
960 |
break;
|
961 |
case EXCP_RFI:
|
962 |
/* Should not occur: we always are in user mode */
|
963 |
fprintf(stderr, "Return from interrupt ?\n");
|
964 |
if (loglevel)
|
965 |
fprintf(logfile, "Return from interrupt ?\n");
|
966 |
abort(); |
967 |
case EXCP_INTERRUPT:
|
968 |
/* Don't know why this should ever happen... */
|
969 |
break;
|
970 |
case EXCP_DEBUG:
|
971 |
{ |
972 |
int sig;
|
973 |
|
974 |
sig = gdb_handlesig (env, TARGET_SIGTRAP); |
975 |
if (sig)
|
976 |
{ |
977 |
info.si_signo = sig; |
978 |
info.si_errno = 0;
|
979 |
info.si_code = TARGET_TRAP_BRKPT; |
980 |
queue_signal(info.si_signo, &info); |
981 |
} |
982 |
} |
983 |
break;
|
984 |
default:
|
985 |
fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
|
986 |
trapnr); |
987 |
if (loglevel) {
|
988 |
fprintf(logfile, "qemu: unhandled CPU exception 0x%02x - "
|
989 |
"0x%02x - aborting\n", trapnr, env->error_code);
|
990 |
} |
991 |
abort(); |
992 |
} |
993 |
process_pending_signals(env); |
994 |
} |
995 |
} |
996 |
#endif
|
997 |
|
998 |
void usage(void) |
999 |
{ |
1000 |
printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n" |
1001 |
"usage: qemu-" TARGET_ARCH " [-h] [-g] [-d opts] [-L path] [-s size] program [arguments...]\n" |
1002 |
"Linux CPU emulator (compiled for %s emulation)\n"
|
1003 |
"\n"
|
1004 |
"-h print this help\n"
|
1005 |
"-g wait gdb connection to port %d\n"
|
1006 |
"-L path set the elf interpreter prefix (default=%s)\n"
|
1007 |
"-s size set the stack size in bytes (default=%ld)\n"
|
1008 |
"\n"
|
1009 |
"debug options:\n"
|
1010 |
#ifdef USE_CODE_COPY
|
1011 |
"-no-code-copy disable code copy acceleration\n"
|
1012 |
#endif
|
1013 |
"-d options activate log (logfile=%s)\n"
|
1014 |
"-p pagesize set the host page size to 'pagesize'\n",
|
1015 |
TARGET_ARCH, |
1016 |
DEFAULT_GDBSTUB_PORT, |
1017 |
interp_prefix, |
1018 |
x86_stack_size, |
1019 |
DEBUG_LOGFILE); |
1020 |
_exit(1);
|
1021 |
} |
1022 |
|
1023 |
/* XXX: currently only used for async signals (see signal.c) */
|
1024 |
CPUState *global_env; |
1025 |
/* used only if single thread */
|
1026 |
CPUState *cpu_single_env = NULL;
|
1027 |
|
1028 |
/* used to free thread contexts */
|
1029 |
TaskState *first_task_state; |
1030 |
|
1031 |
int main(int argc, char **argv) |
1032 |
{ |
1033 |
const char *filename; |
1034 |
struct target_pt_regs regs1, *regs = ®s1;
|
1035 |
struct image_info info1, *info = &info1;
|
1036 |
TaskState ts1, *ts = &ts1; |
1037 |
CPUState *env; |
1038 |
int optind;
|
1039 |
const char *r; |
1040 |
int use_gdbstub = 0; |
1041 |
|
1042 |
if (argc <= 1) |
1043 |
usage(); |
1044 |
|
1045 |
/* init debug */
|
1046 |
cpu_set_log_filename(DEBUG_LOGFILE); |
1047 |
|
1048 |
optind = 1;
|
1049 |
for(;;) {
|
1050 |
if (optind >= argc)
|
1051 |
break;
|
1052 |
r = argv[optind]; |
1053 |
if (r[0] != '-') |
1054 |
break;
|
1055 |
optind++; |
1056 |
r++; |
1057 |
if (!strcmp(r, "-")) { |
1058 |
break;
|
1059 |
} else if (!strcmp(r, "d")) { |
1060 |
int mask;
|
1061 |
CPULogItem *item; |
1062 |
|
1063 |
if (optind >= argc)
|
1064 |
break;
|
1065 |
|
1066 |
r = argv[optind++]; |
1067 |
mask = cpu_str_to_log_mask(r); |
1068 |
if (!mask) {
|
1069 |
printf("Log items (comma separated):\n");
|
1070 |
for(item = cpu_log_items; item->mask != 0; item++) { |
1071 |
printf("%-10s %s\n", item->name, item->help);
|
1072 |
} |
1073 |
exit(1);
|
1074 |
} |
1075 |
cpu_set_log(mask); |
1076 |
} else if (!strcmp(r, "s")) { |
1077 |
r = argv[optind++]; |
1078 |
x86_stack_size = strtol(r, (char **)&r, 0); |
1079 |
if (x86_stack_size <= 0) |
1080 |
usage(); |
1081 |
if (*r == 'M') |
1082 |
x86_stack_size *= 1024 * 1024; |
1083 |
else if (*r == 'k' || *r == 'K') |
1084 |
x86_stack_size *= 1024;
|
1085 |
} else if (!strcmp(r, "L")) { |
1086 |
interp_prefix = argv[optind++]; |
1087 |
} else if (!strcmp(r, "p")) { |
1088 |
qemu_host_page_size = atoi(argv[optind++]); |
1089 |
if (qemu_host_page_size == 0 || |
1090 |
(qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { |
1091 |
fprintf(stderr, "page size must be a power of two\n");
|
1092 |
exit(1);
|
1093 |
} |
1094 |
} else if (!strcmp(r, "g")) { |
1095 |
use_gdbstub = 1;
|
1096 |
} else
|
1097 |
#ifdef USE_CODE_COPY
|
1098 |
if (!strcmp(r, "no-code-copy")) { |
1099 |
code_copy_enabled = 0;
|
1100 |
} else
|
1101 |
#endif
|
1102 |
{ |
1103 |
usage(); |
1104 |
} |
1105 |
} |
1106 |
if (optind >= argc)
|
1107 |
usage(); |
1108 |
filename = argv[optind]; |
1109 |
|
1110 |
/* Zero out regs */
|
1111 |
memset(regs, 0, sizeof(struct target_pt_regs)); |
1112 |
|
1113 |
/* Zero out image_info */
|
1114 |
memset(info, 0, sizeof(struct image_info)); |
1115 |
|
1116 |
/* Scan interp_prefix dir for replacement files. */
|
1117 |
init_paths(interp_prefix); |
1118 |
|
1119 |
/* NOTE: we need to init the CPU at this stage to get
|
1120 |
qemu_host_page_size */
|
1121 |
env = cpu_init(); |
1122 |
|
1123 |
if (elf_exec(filename, argv+optind, environ, regs, info) != 0) { |
1124 |
printf("Error loading %s\n", filename);
|
1125 |
_exit(1);
|
1126 |
} |
1127 |
|
1128 |
if (loglevel) {
|
1129 |
page_dump(logfile); |
1130 |
|
1131 |
fprintf(logfile, "start_brk 0x%08lx\n" , info->start_brk);
|
1132 |
fprintf(logfile, "end_code 0x%08lx\n" , info->end_code);
|
1133 |
fprintf(logfile, "start_code 0x%08lx\n" , info->start_code);
|
1134 |
fprintf(logfile, "end_data 0x%08lx\n" , info->end_data);
|
1135 |
fprintf(logfile, "start_stack 0x%08lx\n" , info->start_stack);
|
1136 |
fprintf(logfile, "brk 0x%08lx\n" , info->brk);
|
1137 |
fprintf(logfile, "entry 0x%08lx\n" , info->entry);
|
1138 |
} |
1139 |
|
1140 |
target_set_brk((char *)info->brk);
|
1141 |
syscall_init(); |
1142 |
signal_init(); |
1143 |
|
1144 |
global_env = env; |
1145 |
|
1146 |
/* build Task State */
|
1147 |
memset(ts, 0, sizeof(TaskState)); |
1148 |
env->opaque = ts; |
1149 |
ts->used = 1;
|
1150 |
env->user_mode_only = 1;
|
1151 |
|
1152 |
#if defined(TARGET_I386)
|
1153 |
cpu_x86_set_cpl(env, 3);
|
1154 |
|
1155 |
env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
|
1156 |
env->hflags |= HF_PE_MASK; |
1157 |
if (env->cpuid_features & CPUID_SSE) {
|
1158 |
env->cr[4] |= CR4_OSFXSR_MASK;
|
1159 |
env->hflags |= HF_OSFXSR_MASK; |
1160 |
} |
1161 |
|
1162 |
/* flags setup : we activate the IRQs by default as in user mode */
|
1163 |
env->eflags |= IF_MASK; |
1164 |
|
1165 |
/* linux register setup */
|
1166 |
env->regs[R_EAX] = regs->eax; |
1167 |
env->regs[R_EBX] = regs->ebx; |
1168 |
env->regs[R_ECX] = regs->ecx; |
1169 |
env->regs[R_EDX] = regs->edx; |
1170 |
env->regs[R_ESI] = regs->esi; |
1171 |
env->regs[R_EDI] = regs->edi; |
1172 |
env->regs[R_EBP] = regs->ebp; |
1173 |
env->regs[R_ESP] = regs->esp; |
1174 |
env->eip = regs->eip; |
1175 |
|
1176 |
/* linux interrupt setup */
|
1177 |
env->idt.base = (long)idt_table;
|
1178 |
env->idt.limit = sizeof(idt_table) - 1; |
1179 |
set_idt(0, 0); |
1180 |
set_idt(1, 0); |
1181 |
set_idt(2, 0); |
1182 |
set_idt(3, 3); |
1183 |
set_idt(4, 3); |
1184 |
set_idt(5, 3); |
1185 |
set_idt(6, 0); |
1186 |
set_idt(7, 0); |
1187 |
set_idt(8, 0); |
1188 |
set_idt(9, 0); |
1189 |
set_idt(10, 0); |
1190 |
set_idt(11, 0); |
1191 |
set_idt(12, 0); |
1192 |
set_idt(13, 0); |
1193 |
set_idt(14, 0); |
1194 |
set_idt(15, 0); |
1195 |
set_idt(16, 0); |
1196 |
set_idt(17, 0); |
1197 |
set_idt(18, 0); |
1198 |
set_idt(19, 0); |
1199 |
set_idt(0x80, 3); |
1200 |
|
1201 |
/* linux segment setup */
|
1202 |
env->gdt.base = (long)gdt_table;
|
1203 |
env->gdt.limit = sizeof(gdt_table) - 1; |
1204 |
write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, |
1205 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
1206 |
(3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); |
1207 |
write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff, |
1208 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
1209 |
(3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); |
1210 |
cpu_x86_load_seg(env, R_CS, __USER_CS); |
1211 |
cpu_x86_load_seg(env, R_DS, __USER_DS); |
1212 |
cpu_x86_load_seg(env, R_ES, __USER_DS); |
1213 |
cpu_x86_load_seg(env, R_SS, __USER_DS); |
1214 |
cpu_x86_load_seg(env, R_FS, __USER_DS); |
1215 |
cpu_x86_load_seg(env, R_GS, __USER_DS); |
1216 |
|
1217 |
#elif defined(TARGET_ARM)
|
1218 |
{ |
1219 |
int i;
|
1220 |
for(i = 0; i < 16; i++) { |
1221 |
env->regs[i] = regs->uregs[i]; |
1222 |
} |
1223 |
env->cpsr = regs->uregs[16];
|
1224 |
ts->stack_base = info->start_stack; |
1225 |
ts->heap_base = info->brk; |
1226 |
/* This will be filled in on the first SYS_HEAPINFO call. */
|
1227 |
ts->heap_limit = 0;
|
1228 |
} |
1229 |
#elif defined(TARGET_SPARC)
|
1230 |
{ |
1231 |
int i;
|
1232 |
env->pc = regs->pc; |
1233 |
env->npc = regs->npc; |
1234 |
env->y = regs->y; |
1235 |
for(i = 0; i < 8; i++) |
1236 |
env->gregs[i] = regs->u_regs[i]; |
1237 |
for(i = 0; i < 8; i++) |
1238 |
env->regwptr[i] = regs->u_regs[i + 8];
|
1239 |
} |
1240 |
#elif defined(TARGET_PPC)
|
1241 |
{ |
1242 |
int i;
|
1243 |
for (i = 0; i < 32; i++) { |
1244 |
if (i != 12 && i != 6 && i != 13) |
1245 |
env->msr[i] = (regs->msr >> i) & 1;
|
1246 |
} |
1247 |
env->nip = regs->nip; |
1248 |
for(i = 0; i < 32; i++) { |
1249 |
env->gpr[i] = regs->gpr[i]; |
1250 |
} |
1251 |
} |
1252 |
#else
|
1253 |
#error unsupported target CPU
|
1254 |
#endif
|
1255 |
|
1256 |
if (use_gdbstub) {
|
1257 |
gdbserver_start (DEFAULT_GDBSTUB_PORT); |
1258 |
gdb_handlesig(env, 0);
|
1259 |
} |
1260 |
cpu_loop(env); |
1261 |
/* never exits */
|
1262 |
return 0; |
1263 |
} |