root / linux-user / main.c @ 61ff6f58
History | View | Annotate | Download (36.3 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 |
default:
|
| 282 |
pc = env->segs[R_CS].base + env->eip; |
| 283 |
fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
|
| 284 |
(long)pc, trapnr);
|
| 285 |
abort(); |
| 286 |
} |
| 287 |
process_pending_signals(env); |
| 288 |
} |
| 289 |
} |
| 290 |
#endif
|
| 291 |
|
| 292 |
#ifdef TARGET_ARM
|
| 293 |
|
| 294 |
/* XXX: find a better solution */
|
| 295 |
extern void tb_invalidate_page_range(target_ulong start, target_ulong end); |
| 296 |
|
| 297 |
static void arm_cache_flush(target_ulong start, target_ulong last) |
| 298 |
{
|
| 299 |
target_ulong addr, last1; |
| 300 |
|
| 301 |
if (last < start)
|
| 302 |
return;
|
| 303 |
addr = start; |
| 304 |
for(;;) {
|
| 305 |
last1 = ((addr + TARGET_PAGE_SIZE) & TARGET_PAGE_MASK) - 1;
|
| 306 |
if (last1 > last)
|
| 307 |
last1 = last; |
| 308 |
tb_invalidate_page_range(addr, last1 + 1);
|
| 309 |
if (last1 == last)
|
| 310 |
break;
|
| 311 |
addr = last1 + 1;
|
| 312 |
} |
| 313 |
} |
| 314 |
|
| 315 |
void cpu_loop(CPUARMState *env)
|
| 316 |
{
|
| 317 |
int trapnr;
|
| 318 |
unsigned int n, insn; |
| 319 |
target_siginfo_t info; |
| 320 |
|
| 321 |
for(;;) {
|
| 322 |
trapnr = cpu_arm_exec(env); |
| 323 |
switch(trapnr) {
|
| 324 |
case EXCP_UDEF:
|
| 325 |
{
|
| 326 |
TaskState *ts = env->opaque; |
| 327 |
uint32_t opcode; |
| 328 |
|
| 329 |
/* we handle the FPU emulation here, as Linux */
|
| 330 |
/* we get the opcode */
|
| 331 |
opcode = ldl_raw((uint8_t *)env->regs[15]);
|
| 332 |
|
| 333 |
if (EmulateAll(opcode, &ts->fpa, env->regs) == 0) { |
| 334 |
info.si_signo = SIGILL; |
| 335 |
info.si_errno = 0;
|
| 336 |
info.si_code = TARGET_ILL_ILLOPN; |
| 337 |
info._sifields._sigfault._addr = env->regs[15];
|
| 338 |
queue_signal(info.si_signo, &info); |
| 339 |
} else {
|
| 340 |
/* increment PC */
|
| 341 |
env->regs[15] += 4; |
| 342 |
} |
| 343 |
} |
| 344 |
break;
|
| 345 |
case EXCP_SWI:
|
| 346 |
{
|
| 347 |
/* system call */
|
| 348 |
insn = ldl((void *)(env->regs[15] - 4)); |
| 349 |
n = insn & 0xffffff;
|
| 350 |
if (n == ARM_NR_cacheflush) {
|
| 351 |
arm_cache_flush(env->regs[0], env->regs[1]); |
| 352 |
} else if (n >= ARM_SYSCALL_BASE) { |
| 353 |
/* linux syscall */
|
| 354 |
n -= ARM_SYSCALL_BASE; |
| 355 |
env->regs[0] = do_syscall(env,
|
| 356 |
n, |
| 357 |
env->regs[0],
|
| 358 |
env->regs[1],
|
| 359 |
env->regs[2],
|
| 360 |
env->regs[3],
|
| 361 |
env->regs[4],
|
| 362 |
0);
|
| 363 |
} else {
|
| 364 |
goto error;
|
| 365 |
} |
| 366 |
} |
| 367 |
break;
|
| 368 |
case EXCP_INTERRUPT:
|
| 369 |
/* just indicate that signals should be handled asap */
|
| 370 |
break;
|
| 371 |
case EXCP_PREFETCH_ABORT:
|
| 372 |
case EXCP_DATA_ABORT:
|
| 373 |
{
|
| 374 |
info.si_signo = SIGSEGV; |
| 375 |
info.si_errno = 0;
|
| 376 |
/* XXX: check env->error_code */
|
| 377 |
info.si_code = TARGET_SEGV_MAPERR; |
| 378 |
info._sifields._sigfault._addr = env->cp15_6; |
| 379 |
queue_signal(info.si_signo, &info); |
| 380 |
} |
| 381 |
break;
|
| 382 |
default:
|
| 383 |
error:
|
| 384 |
fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
|
| 385 |
trapnr); |
| 386 |
cpu_dump_state(env, stderr, fprintf, 0);
|
| 387 |
abort(); |
| 388 |
} |
| 389 |
process_pending_signals(env); |
| 390 |
} |
| 391 |
} |
| 392 |
|
| 393 |
#endif
|
| 394 |
|
| 395 |
#ifdef TARGET_SPARC
|
| 396 |
|
| 397 |
//#define DEBUG_WIN
|
| 398 |
|
| 399 |
/* WARNING: dealing with register windows _is_ complicated */
|
| 400 |
static inline int get_reg_index(CPUSPARCState *env, int cwp, int index) |
| 401 |
{
|
| 402 |
index = (index + cwp * 16) & (16 * NWINDOWS - 1); |
| 403 |
/* wrap handling : if cwp is on the last window, then we use the
|
| 404 |
registers 'after' the end */
|
| 405 |
if (index < 8 && env->cwp == (NWINDOWS - 1)) |
| 406 |
index += (16 * NWINDOWS);
|
| 407 |
return index;
|
| 408 |
} |
| 409 |
|
| 410 |
static inline void save_window_offset(CPUSPARCState *env, int offset) |
| 411 |
{
|
| 412 |
unsigned int new_wim, i, cwp1; |
| 413 |
uint32_t *sp_ptr; |
| 414 |
|
| 415 |
new_wim = ((env->wim >> 1) | (env->wim << (NWINDOWS - 1))) & |
| 416 |
((1LL << NWINDOWS) - 1); |
| 417 |
/* save the window */
|
| 418 |
cwp1 = (env->cwp + offset) & (NWINDOWS - 1);
|
| 419 |
sp_ptr = (uint32_t *)(env->regbase[get_reg_index(env, cwp1, 6)]);
|
| 420 |
#if defined(DEBUG_WIN)
|
| 421 |
printf("win_overflow: sp_ptr=0x%x save_cwp=%d\n",
|
| 422 |
(int)sp_ptr, cwp1);
|
| 423 |
#endif
|
| 424 |
for(i = 0; i < 16; i++) |
| 425 |
stl_raw(sp_ptr + i, env->regbase[get_reg_index(env, cwp1, 8 + i)]);
|
| 426 |
env->wim = new_wim; |
| 427 |
} |
| 428 |
|
| 429 |
static void save_window(CPUSPARCState *env) |
| 430 |
{
|
| 431 |
save_window_offset(env, 2);
|
| 432 |
} |
| 433 |
|
| 434 |
static void restore_window(CPUSPARCState *env) |
| 435 |
{
|
| 436 |
unsigned int new_wim, i, cwp1; |
| 437 |
uint32_t *sp_ptr; |
| 438 |
|
| 439 |
new_wim = ((env->wim << 1) | (env->wim >> (NWINDOWS - 1))) & |
| 440 |
((1LL << NWINDOWS) - 1); |
| 441 |
|
| 442 |
/* restore the invalid window */
|
| 443 |
cwp1 = (env->cwp + 1) & (NWINDOWS - 1); |
| 444 |
sp_ptr = (uint32_t *)(env->regbase[get_reg_index(env, cwp1, 6)]);
|
| 445 |
#if defined(DEBUG_WIN)
|
| 446 |
printf("win_underflow: sp_ptr=0x%x load_cwp=%d\n",
|
| 447 |
(int)sp_ptr, cwp1);
|
| 448 |
#endif
|
| 449 |
for(i = 0; i < 16; i++) |
| 450 |
env->regbase[get_reg_index(env, cwp1, 8 + i)] = ldl_raw(sp_ptr + i);
|
| 451 |
env->wim = new_wim; |
| 452 |
} |
| 453 |
|
| 454 |
#if 0
|
| 455 |
static void flush_windows(CPUSPARCState *env)
|
| 456 |
{
|
| 457 |
int offset, cwp1;
|
| 458 |
#if defined(DEBUG_WIN)
|
| 459 |
printf("flush_windows:\n");
|
| 460 |
#endif
|
| 461 |
offset = 2;
|
| 462 |
for(;;) {
|
| 463 |
/* if restore would invoke restore_window(), then we can stop */
|
| 464 |
cwp1 = (env->cwp + 1) & (NWINDOWS - 1); |
| 465 |
if (env->wim & (1 << cwp1)) |
| 466 |
break;
|
| 467 |
#if defined(DEBUG_WIN)
|
| 468 |
printf("offset=%d: ", offset);
|
| 469 |
#endif
|
| 470 |
save_window_offset(env, offset); |
| 471 |
offset++; |
| 472 |
} |
| 473 |
} |
| 474 |
#endif
|
| 475 |
|
| 476 |
void cpu_loop (CPUSPARCState *env)
|
| 477 |
{
|
| 478 |
int trapnr, ret;
|
| 479 |
target_siginfo_t info; |
| 480 |
|
| 481 |
while (1) { |
| 482 |
trapnr = cpu_sparc_exec (env); |
| 483 |
|
| 484 |
switch (trapnr) {
|
| 485 |
case 0x88: |
| 486 |
case 0x90: |
| 487 |
ret = do_syscall (env, env->gregs[1],
|
| 488 |
env->regwptr[0], env->regwptr[1], |
| 489 |
env->regwptr[2], env->regwptr[3], |
| 490 |
env->regwptr[4], env->regwptr[5]); |
| 491 |
if ((unsigned int)ret >= (unsigned int)(-515)) { |
| 492 |
env->psr |= PSR_CARRY; |
| 493 |
ret = -ret; |
| 494 |
} else {
|
| 495 |
env->psr &= ~PSR_CARRY; |
| 496 |
} |
| 497 |
env->regwptr[0] = ret;
|
| 498 |
/* next instruction */
|
| 499 |
env->pc = env->npc; |
| 500 |
env->npc = env->npc + 4;
|
| 501 |
break;
|
| 502 |
case 0x83: /* flush windows */ |
| 503 |
// flush_windows(env);
|
| 504 |
/* next instruction */
|
| 505 |
env->pc = env->npc; |
| 506 |
env->npc = env->npc + 4;
|
| 507 |
break;
|
| 508 |
case TT_WIN_OVF: /* window overflow */ |
| 509 |
save_window(env); |
| 510 |
break;
|
| 511 |
case TT_WIN_UNF: /* window underflow */ |
| 512 |
restore_window(env); |
| 513 |
break;
|
| 514 |
case TT_TFAULT:
|
| 515 |
case TT_DFAULT:
|
| 516 |
{
|
| 517 |
info.si_signo = SIGSEGV; |
| 518 |
info.si_errno = 0;
|
| 519 |
/* XXX: check env->error_code */
|
| 520 |
info.si_code = TARGET_SEGV_MAPERR; |
| 521 |
info._sifields._sigfault._addr = env->mmuregs[4];
|
| 522 |
queue_signal(info.si_signo, &info); |
| 523 |
} |
| 524 |
break;
|
| 525 |
case 0x100: // XXX, why do we get these? |
| 526 |
break;
|
| 527 |
default:
|
| 528 |
printf ("Unhandled trap: 0x%x\n", trapnr);
|
| 529 |
cpu_dump_state(env, stderr, fprintf, 0);
|
| 530 |
exit (1);
|
| 531 |
} |
| 532 |
process_pending_signals (env); |
| 533 |
} |
| 534 |
} |
| 535 |
|
| 536 |
#endif
|
| 537 |
|
| 538 |
#ifdef TARGET_PPC
|
| 539 |
|
| 540 |
static inline uint64_t cpu_ppc_get_tb (CPUState *env) |
| 541 |
{
|
| 542 |
/* TO FIX */
|
| 543 |
return 0; |
| 544 |
} |
| 545 |
|
| 546 |
uint32_t cpu_ppc_load_tbl (CPUState *env) |
| 547 |
{
|
| 548 |
return cpu_ppc_get_tb(env) & 0xFFFFFFFF; |
| 549 |
} |
| 550 |
|
| 551 |
uint32_t cpu_ppc_load_tbu (CPUState *env) |
| 552 |
{
|
| 553 |
return cpu_ppc_get_tb(env) >> 32; |
| 554 |
} |
| 555 |
|
| 556 |
static void cpu_ppc_store_tb (CPUState *env, uint64_t value) |
| 557 |
{
|
| 558 |
/* TO FIX */
|
| 559 |
} |
| 560 |
|
| 561 |
void cpu_ppc_store_tbu (CPUState *env, uint32_t value)
|
| 562 |
{
|
| 563 |
cpu_ppc_store_tb(env, ((uint64_t)value << 32) | cpu_ppc_load_tbl(env));
|
| 564 |
} |
| 565 |
|
| 566 |
void cpu_ppc_store_tbl (CPUState *env, uint32_t value)
|
| 567 |
{
|
| 568 |
cpu_ppc_store_tb(env, ((uint64_t)cpu_ppc_load_tbl(env) << 32) | value);
|
| 569 |
} |
| 570 |
|
| 571 |
uint32_t cpu_ppc_load_decr (CPUState *env) |
| 572 |
{
|
| 573 |
/* TO FIX */
|
| 574 |
return -1; |
| 575 |
} |
| 576 |
|
| 577 |
void cpu_ppc_store_decr (CPUState *env, uint32_t value)
|
| 578 |
{
|
| 579 |
/* TO FIX */
|
| 580 |
} |
| 581 |
|
| 582 |
void cpu_loop(CPUPPCState *env)
|
| 583 |
{
|
| 584 |
target_siginfo_t info; |
| 585 |
int trapnr;
|
| 586 |
uint32_t ret; |
| 587 |
|
| 588 |
for(;;) {
|
| 589 |
trapnr = cpu_ppc_exec(env); |
| 590 |
if (trapnr != EXCP_SYSCALL_USER && trapnr != EXCP_BRANCH &&
|
| 591 |
trapnr != EXCP_TRACE) {
|
| 592 |
if (loglevel > 0) { |
| 593 |
cpu_dump_state(env, logfile, fprintf, 0);
|
| 594 |
} |
| 595 |
} |
| 596 |
switch(trapnr) {
|
| 597 |
case EXCP_NONE:
|
| 598 |
break;
|
| 599 |
case EXCP_SYSCALL_USER:
|
| 600 |
/* system call */
|
| 601 |
/* WARNING:
|
| 602 |
* PPC ABI uses overflow flag in cr0 to signal an error
|
| 603 |
* in syscalls.
|
| 604 |
*/
|
| 605 |
#if 0
|
| 606 |
printf("syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n", env->gpr[0],
|
| 607 |
env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6]);
|
| 608 |
#endif
|
| 609 |
env->crf[0] &= ~0x1; |
| 610 |
ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], |
| 611 |
env->gpr[5], env->gpr[6], env->gpr[7], |
| 612 |
env->gpr[8]);
|
| 613 |
if (ret > (uint32_t)(-515)) { |
| 614 |
env->crf[0] |= 0x1; |
| 615 |
ret = -ret; |
| 616 |
} |
| 617 |
env->gpr[3] = ret;
|
| 618 |
#if 0
|
| 619 |
printf("syscall returned 0x%08x (%d)\n", ret, ret);
|
| 620 |
#endif
|
| 621 |
break;
|
| 622 |
case EXCP_RESET:
|
| 623 |
/* Should not happen ! */
|
| 624 |
fprintf(stderr, "RESET asked... Stop emulation\n");
|
| 625 |
if (loglevel)
|
| 626 |
fprintf(logfile, "RESET asked... Stop emulation\n");
|
| 627 |
abort(); |
| 628 |
case EXCP_MACHINE_CHECK:
|
| 629 |
fprintf(stderr, "Machine check exeption... Stop emulation\n");
|
| 630 |
if (loglevel)
|
| 631 |
fprintf(logfile, "RESET asked... Stop emulation\n");
|
| 632 |
info.si_signo = TARGET_SIGBUS; |
| 633 |
info.si_errno = 0;
|
| 634 |
info.si_code = TARGET_BUS_OBJERR; |
| 635 |
info._sifields._sigfault._addr = env->nip - 4;
|
| 636 |
queue_signal(info.si_signo, &info); |
| 637 |
case EXCP_DSI:
|
| 638 |
fprintf(stderr, "Invalid data memory access: 0x%08x\n", env->spr[DAR]);
|
| 639 |
if (loglevel) {
|
| 640 |
fprintf(logfile, "Invalid data memory access: 0x%08x\n",
|
| 641 |
env->spr[DAR]); |
| 642 |
} |
| 643 |
switch (env->error_code & 0xF) { |
| 644 |
case EXCP_DSI_TRANSLATE:
|
| 645 |
info.si_signo = TARGET_SIGSEGV; |
| 646 |
info.si_errno = 0;
|
| 647 |
info.si_code = TARGET_SEGV_MAPERR; |
| 648 |
break;
|
| 649 |
case EXCP_DSI_NOTSUP:
|
| 650 |
case EXCP_DSI_EXTERNAL:
|
| 651 |
info.si_signo = TARGET_SIGILL; |
| 652 |
info.si_errno = 0;
|
| 653 |
info.si_code = TARGET_ILL_ILLADR; |
| 654 |
break;
|
| 655 |
case EXCP_DSI_PROT:
|
| 656 |
info.si_signo = TARGET_SIGSEGV; |
| 657 |
info.si_errno = 0;
|
| 658 |
info.si_code = TARGET_SEGV_ACCERR; |
| 659 |
break;
|
| 660 |
case EXCP_DSI_DABR:
|
| 661 |
info.si_signo = TARGET_SIGTRAP; |
| 662 |
info.si_errno = 0;
|
| 663 |
info.si_code = TARGET_TRAP_BRKPT; |
| 664 |
break;
|
| 665 |
default:
|
| 666 |
/* Let's send a regular segfault... */
|
| 667 |
fprintf(stderr, "Invalid segfault errno (%02x)\n",
|
| 668 |
env->error_code); |
| 669 |
if (loglevel) {
|
| 670 |
fprintf(logfile, "Invalid segfault errno (%02x)\n",
|
| 671 |
env->error_code); |
| 672 |
} |
| 673 |
info.si_signo = TARGET_SIGSEGV; |
| 674 |
info.si_errno = 0;
|
| 675 |
info.si_code = TARGET_SEGV_MAPERR; |
| 676 |
break;
|
| 677 |
} |
| 678 |
info._sifields._sigfault._addr = env->nip; |
| 679 |
queue_signal(info.si_signo, &info); |
| 680 |
break;
|
| 681 |
case EXCP_ISI:
|
| 682 |
fprintf(stderr, "Invalid instruction fetch\n");
|
| 683 |
if (loglevel)
|
| 684 |
fprintf(logfile, "Invalid instruction fetch\n");
|
| 685 |
switch (env->error_code) {
|
| 686 |
case EXCP_ISI_TRANSLATE:
|
| 687 |
info.si_signo = TARGET_SIGSEGV; |
| 688 |
info.si_errno = 0;
|
| 689 |
info.si_code = TARGET_SEGV_MAPERR; |
| 690 |
break;
|
| 691 |
case EXCP_ISI_GUARD:
|
| 692 |
info.si_signo = TARGET_SIGILL; |
| 693 |
info.si_errno = 0;
|
| 694 |
info.si_code = TARGET_ILL_ILLADR; |
| 695 |
break;
|
| 696 |
case EXCP_ISI_NOEXEC:
|
| 697 |
case EXCP_ISI_PROT:
|
| 698 |
info.si_signo = TARGET_SIGSEGV; |
| 699 |
info.si_errno = 0;
|
| 700 |
info.si_code = TARGET_SEGV_ACCERR; |
| 701 |
break;
|
| 702 |
default:
|
| 703 |
/* Let's send a regular segfault... */
|
| 704 |
fprintf(stderr, "Invalid segfault errno (%02x)\n",
|
| 705 |
env->error_code); |
| 706 |
if (loglevel) {
|
| 707 |
fprintf(logfile, "Invalid segfault errno (%02x)\n",
|
| 708 |
env->error_code); |
| 709 |
} |
| 710 |
info.si_signo = TARGET_SIGSEGV; |
| 711 |
info.si_errno = 0;
|
| 712 |
info.si_code = TARGET_SEGV_MAPERR; |
| 713 |
break;
|
| 714 |
} |
| 715 |
info._sifields._sigfault._addr = env->nip - 4;
|
| 716 |
queue_signal(info.si_signo, &info); |
| 717 |
break;
|
| 718 |
case EXCP_EXTERNAL:
|
| 719 |
/* Should not happen ! */
|
| 720 |
fprintf(stderr, "External interruption... Stop emulation\n");
|
| 721 |
if (loglevel)
|
| 722 |
fprintf(logfile, "External interruption... Stop emulation\n");
|
| 723 |
abort(); |
| 724 |
case EXCP_ALIGN:
|
| 725 |
fprintf(stderr, "Invalid unaligned memory access\n");
|
| 726 |
if (loglevel)
|
| 727 |
fprintf(logfile, "Invalid unaligned memory access\n");
|
| 728 |
info.si_signo = TARGET_SIGBUS; |
| 729 |
info.si_errno = 0;
|
| 730 |
info.si_code = TARGET_BUS_ADRALN; |
| 731 |
info._sifields._sigfault._addr = env->nip - 4;
|
| 732 |
queue_signal(info.si_signo, &info); |
| 733 |
break;
|
| 734 |
case EXCP_PROGRAM:
|
| 735 |
switch (env->error_code & ~0xF) { |
| 736 |
case EXCP_FP:
|
| 737 |
fprintf(stderr, "Program exception\n");
|
| 738 |
if (loglevel)
|
| 739 |
fprintf(logfile, "Program exception\n");
|
| 740 |
/* Set FX */
|
| 741 |
env->fpscr[7] |= 0x8; |
| 742 |
/* Finally, update FEX */
|
| 743 |
if ((((env->fpscr[7] & 0x3) << 3) | (env->fpscr[6] >> 1)) & |
| 744 |
((env->fpscr[1] << 1) | (env->fpscr[0] >> 3))) |
| 745 |
env->fpscr[7] |= 0x4; |
| 746 |
info.si_signo = TARGET_SIGFPE; |
| 747 |
info.si_errno = 0;
|
| 748 |
switch (env->error_code & 0xF) { |
| 749 |
case EXCP_FP_OX:
|
| 750 |
info.si_code = TARGET_FPE_FLTOVF; |
| 751 |
break;
|
| 752 |
case EXCP_FP_UX:
|
| 753 |
info.si_code = TARGET_FPE_FLTUND; |
| 754 |
break;
|
| 755 |
case EXCP_FP_ZX:
|
| 756 |
case EXCP_FP_VXZDZ:
|
| 757 |
info.si_code = TARGET_FPE_FLTDIV; |
| 758 |
break;
|
| 759 |
case EXCP_FP_XX:
|
| 760 |
info.si_code = TARGET_FPE_FLTRES; |
| 761 |
break;
|
| 762 |
case EXCP_FP_VXSOFT:
|
| 763 |
info.si_code = TARGET_FPE_FLTINV; |
| 764 |
break;
|
| 765 |
case EXCP_FP_VXNAN:
|
| 766 |
case EXCP_FP_VXISI:
|
| 767 |
case EXCP_FP_VXIDI:
|
| 768 |
case EXCP_FP_VXIMZ:
|
| 769 |
case EXCP_FP_VXVC:
|
| 770 |
case EXCP_FP_VXSQRT:
|
| 771 |
case EXCP_FP_VXCVI:
|
| 772 |
info.si_code = TARGET_FPE_FLTSUB; |
| 773 |
break;
|
| 774 |
default:
|
| 775 |
fprintf(stderr, "Unknown floating point exception "
|
| 776 |
"(%02x)\n", env->error_code);
|
| 777 |
if (loglevel) {
|
| 778 |
fprintf(logfile, "Unknown floating point exception "
|
| 779 |
"(%02x)\n", env->error_code & 0xF); |
| 780 |
} |
| 781 |
} |
| 782 |
break;
|
| 783 |
case EXCP_INVAL:
|
| 784 |
fprintf(stderr, "Invalid instruction\n");
|
| 785 |
if (loglevel)
|
| 786 |
fprintf(logfile, "Invalid instruction\n");
|
| 787 |
info.si_signo = TARGET_SIGILL; |
| 788 |
info.si_errno = 0;
|
| 789 |
switch (env->error_code & 0xF) { |
| 790 |
case EXCP_INVAL_INVAL:
|
| 791 |
info.si_code = TARGET_ILL_ILLOPC; |
| 792 |
break;
|
| 793 |
case EXCP_INVAL_LSWX:
|
| 794 |
info.si_code = TARGET_ILL_ILLOPN; |
| 795 |
break;
|
| 796 |
case EXCP_INVAL_SPR:
|
| 797 |
info.si_code = TARGET_ILL_PRVREG; |
| 798 |
break;
|
| 799 |
case EXCP_INVAL_FP:
|
| 800 |
info.si_code = TARGET_ILL_COPROC; |
| 801 |
break;
|
| 802 |
default:
|
| 803 |
fprintf(stderr, "Unknown invalid operation (%02x)\n",
|
| 804 |
env->error_code & 0xF);
|
| 805 |
if (loglevel) {
|
| 806 |
fprintf(logfile, "Unknown invalid operation (%02x)\n",
|
| 807 |
env->error_code & 0xF);
|
| 808 |
} |
| 809 |
info.si_code = TARGET_ILL_ILLADR; |
| 810 |
break;
|
| 811 |
} |
| 812 |
break;
|
| 813 |
case EXCP_PRIV:
|
| 814 |
fprintf(stderr, "Privilege violation\n");
|
| 815 |
if (loglevel)
|
| 816 |
fprintf(logfile, "Privilege violation\n");
|
| 817 |
info.si_signo = TARGET_SIGILL; |
| 818 |
info.si_errno = 0;
|
| 819 |
switch (env->error_code & 0xF) { |
| 820 |
case EXCP_PRIV_OPC:
|
| 821 |
info.si_code = TARGET_ILL_PRVOPC; |
| 822 |
break;
|
| 823 |
case EXCP_PRIV_REG:
|
| 824 |
info.si_code = TARGET_ILL_PRVREG; |
| 825 |
break;
|
| 826 |
default:
|
| 827 |
fprintf(stderr, "Unknown privilege violation (%02x)\n",
|
| 828 |
env->error_code & 0xF);
|
| 829 |
info.si_code = TARGET_ILL_PRVOPC; |
| 830 |
break;
|
| 831 |
} |
| 832 |
break;
|
| 833 |
case EXCP_TRAP:
|
| 834 |
fprintf(stderr, "Tried to call a TRAP\n");
|
| 835 |
if (loglevel)
|
| 836 |
fprintf(logfile, "Tried to call a TRAP\n");
|
| 837 |
abort(); |
| 838 |
default:
|
| 839 |
/* Should not happen ! */
|
| 840 |
fprintf(stderr, "Unknown program exception (%02x)\n",
|
| 841 |
env->error_code); |
| 842 |
if (loglevel) {
|
| 843 |
fprintf(logfile, "Unknwon program exception (%02x)\n",
|
| 844 |
env->error_code); |
| 845 |
} |
| 846 |
abort(); |
| 847 |
} |
| 848 |
info._sifields._sigfault._addr = env->nip - 4;
|
| 849 |
queue_signal(info.si_signo, &info); |
| 850 |
break;
|
| 851 |
case EXCP_NO_FP:
|
| 852 |
fprintf(stderr, "No floating point allowed\n");
|
| 853 |
if (loglevel)
|
| 854 |
fprintf(logfile, "No floating point allowed\n");
|
| 855 |
info.si_signo = TARGET_SIGILL; |
| 856 |
info.si_errno = 0;
|
| 857 |
info.si_code = TARGET_ILL_COPROC; |
| 858 |
info._sifields._sigfault._addr = env->nip - 4;
|
| 859 |
queue_signal(info.si_signo, &info); |
| 860 |
break;
|
| 861 |
case EXCP_DECR:
|
| 862 |
/* Should not happen ! */
|
| 863 |
fprintf(stderr, "Decrementer exception\n");
|
| 864 |
if (loglevel)
|
| 865 |
fprintf(logfile, "Decrementer exception\n");
|
| 866 |
abort(); |
| 867 |
case EXCP_RESA: /* Implementation specific */ |
| 868 |
/* Should not happen ! */
|
| 869 |
fprintf(stderr, "RESA exception should never happen !\n");
|
| 870 |
if (loglevel)
|
| 871 |
fprintf(logfile, "RESA exception should never happen !\n");
|
| 872 |
abort(); |
| 873 |
case EXCP_RESB: /* Implementation specific */ |
| 874 |
/* Should not happen ! */
|
| 875 |
fprintf(stderr, "RESB exception should never happen !\n");
|
| 876 |
if (loglevel)
|
| 877 |
fprintf(logfile, "RESB exception should never happen !\n");
|
| 878 |
abort(); |
| 879 |
case EXCP_TRACE:
|
| 880 |
/* Do nothing: we use this to trace execution */
|
| 881 |
break;
|
| 882 |
case EXCP_FP_ASSIST:
|
| 883 |
/* Should not happen ! */
|
| 884 |
fprintf(stderr, "Floating point assist exception\n");
|
| 885 |
if (loglevel)
|
| 886 |
fprintf(logfile, "Floating point assist exception\n");
|
| 887 |
abort(); |
| 888 |
case EXCP_MTMSR:
|
| 889 |
/* We reloaded the msr, just go on */
|
| 890 |
if (msr_pr == 0) { |
| 891 |
fprintf(stderr, "Tried to go into supervisor mode !\n");
|
| 892 |
if (loglevel)
|
| 893 |
fprintf(logfile, "Tried to go into supervisor mode !\n");
|
| 894 |
abort(); |
| 895 |
} |
| 896 |
break;
|
| 897 |
case EXCP_BRANCH:
|
| 898 |
/* We stopped because of a jump... */
|
| 899 |
break;
|
| 900 |
case EXCP_RFI:
|
| 901 |
/* Should not occur: we always are in user mode */
|
| 902 |
fprintf(stderr, "Return from interrupt ?\n");
|
| 903 |
if (loglevel)
|
| 904 |
fprintf(logfile, "Return from interrupt ?\n");
|
| 905 |
abort(); |
| 906 |
case EXCP_INTERRUPT:
|
| 907 |
/* Don't know why this should ever happen... */
|
| 908 |
break;
|
| 909 |
case EXCP_DEBUG:
|
| 910 |
break;
|
| 911 |
default:
|
| 912 |
fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
|
| 913 |
trapnr); |
| 914 |
if (loglevel) {
|
| 915 |
fprintf(logfile, "qemu: unhandled CPU exception 0x%02x - "
|
| 916 |
"0x%02x - aborting\n", trapnr, env->error_code);
|
| 917 |
} |
| 918 |
abort(); |
| 919 |
} |
| 920 |
process_pending_signals(env); |
| 921 |
} |
| 922 |
} |
| 923 |
#endif
|
| 924 |
|
| 925 |
void usage(void) |
| 926 |
{
|
| 927 |
printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n" |
| 928 |
"usage: qemu-" TARGET_ARCH " [-h] [-d opts] [-L path] [-s size] program [arguments...]\n" |
| 929 |
"Linux CPU emulator (compiled for %s emulation)\n"
|
| 930 |
"\n"
|
| 931 |
"-h print this help\n"
|
| 932 |
"-L path set the elf interpreter prefix (default=%s)\n"
|
| 933 |
"-s size set the stack size in bytes (default=%ld)\n"
|
| 934 |
"\n"
|
| 935 |
"debug options:\n"
|
| 936 |
#ifdef USE_CODE_COPY
|
| 937 |
"-no-code-copy disable code copy acceleration\n"
|
| 938 |
#endif
|
| 939 |
"-d options activate log (logfile=%s)\n"
|
| 940 |
"-p pagesize set the host page size to 'pagesize'\n",
|
| 941 |
TARGET_ARCH, |
| 942 |
interp_prefix, |
| 943 |
x86_stack_size, |
| 944 |
DEBUG_LOGFILE); |
| 945 |
_exit(1);
|
| 946 |
} |
| 947 |
|
| 948 |
/* XXX: currently only used for async signals (see signal.c) */
|
| 949 |
CPUState *global_env; |
| 950 |
/* used only if single thread */
|
| 951 |
CPUState *cpu_single_env = NULL;
|
| 952 |
|
| 953 |
/* used to free thread contexts */
|
| 954 |
TaskState *first_task_state; |
| 955 |
|
| 956 |
int main(int argc, char **argv) |
| 957 |
{
|
| 958 |
const char *filename; |
| 959 |
struct target_pt_regs regs1, *regs = ®s1;
|
| 960 |
struct image_info info1, *info = &info1;
|
| 961 |
TaskState ts1, *ts = &ts1; |
| 962 |
CPUState *env; |
| 963 |
int optind;
|
| 964 |
const char *r; |
| 965 |
|
| 966 |
if (argc <= 1) |
| 967 |
usage(); |
| 968 |
|
| 969 |
/* init debug */
|
| 970 |
cpu_set_log_filename(DEBUG_LOGFILE); |
| 971 |
|
| 972 |
optind = 1;
|
| 973 |
for(;;) {
|
| 974 |
if (optind >= argc)
|
| 975 |
break;
|
| 976 |
r = argv[optind]; |
| 977 |
if (r[0] != '-') |
| 978 |
break;
|
| 979 |
optind++; |
| 980 |
r++; |
| 981 |
if (!strcmp(r, "-")) { |
| 982 |
break;
|
| 983 |
} else if (!strcmp(r, "d")) { |
| 984 |
int mask;
|
| 985 |
CPULogItem *item; |
| 986 |
|
| 987 |
if (optind >= argc)
|
| 988 |
break;
|
| 989 |
|
| 990 |
r = argv[optind++]; |
| 991 |
mask = cpu_str_to_log_mask(r); |
| 992 |
if (!mask) {
|
| 993 |
printf("Log items (comma separated):\n");
|
| 994 |
for(item = cpu_log_items; item->mask != 0; item++) { |
| 995 |
printf("%-10s %s\n", item->name, item->help);
|
| 996 |
} |
| 997 |
exit(1);
|
| 998 |
} |
| 999 |
cpu_set_log(mask); |
| 1000 |
} else if (!strcmp(r, "s")) { |
| 1001 |
r = argv[optind++]; |
| 1002 |
x86_stack_size = strtol(r, (char **)&r, 0); |
| 1003 |
if (x86_stack_size <= 0) |
| 1004 |
usage(); |
| 1005 |
if (*r == 'M') |
| 1006 |
x86_stack_size *= 1024 * 1024; |
| 1007 |
else if (*r == 'k' || *r == 'K') |
| 1008 |
x86_stack_size *= 1024;
|
| 1009 |
} else if (!strcmp(r, "L")) { |
| 1010 |
interp_prefix = argv[optind++]; |
| 1011 |
} else if (!strcmp(r, "p")) { |
| 1012 |
qemu_host_page_size = atoi(argv[optind++]); |
| 1013 |
if (qemu_host_page_size == 0 || |
| 1014 |
(qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { |
| 1015 |
fprintf(stderr, "page size must be a power of two\n");
|
| 1016 |
exit(1);
|
| 1017 |
} |
| 1018 |
} else
|
| 1019 |
#ifdef USE_CODE_COPY
|
| 1020 |
if (!strcmp(r, "no-code-copy")) { |
| 1021 |
code_copy_enabled = 0;
|
| 1022 |
} else
|
| 1023 |
#endif
|
| 1024 |
{
|
| 1025 |
usage(); |
| 1026 |
} |
| 1027 |
} |
| 1028 |
if (optind >= argc)
|
| 1029 |
usage(); |
| 1030 |
filename = argv[optind]; |
| 1031 |
|
| 1032 |
/* Zero out regs */
|
| 1033 |
memset(regs, 0, sizeof(struct target_pt_regs)); |
| 1034 |
|
| 1035 |
/* Zero out image_info */
|
| 1036 |
memset(info, 0, sizeof(struct image_info)); |
| 1037 |
|
| 1038 |
/* Scan interp_prefix dir for replacement files. */
|
| 1039 |
init_paths(interp_prefix); |
| 1040 |
|
| 1041 |
/* NOTE: we need to init the CPU at this stage to get
|
| 1042 |
qemu_host_page_size */
|
| 1043 |
env = cpu_init(); |
| 1044 |
|
| 1045 |
if (elf_exec(filename, argv+optind, environ, regs, info) != 0) { |
| 1046 |
printf("Error loading %s\n", filename);
|
| 1047 |
_exit(1);
|
| 1048 |
} |
| 1049 |
|
| 1050 |
if (loglevel) {
|
| 1051 |
page_dump(logfile); |
| 1052 |
|
| 1053 |
fprintf(logfile, "start_brk 0x%08lx\n" , info->start_brk);
|
| 1054 |
fprintf(logfile, "end_code 0x%08lx\n" , info->end_code);
|
| 1055 |
fprintf(logfile, "start_code 0x%08lx\n" , info->start_code);
|
| 1056 |
fprintf(logfile, "end_data 0x%08lx\n" , info->end_data);
|
| 1057 |
fprintf(logfile, "start_stack 0x%08lx\n" , info->start_stack);
|
| 1058 |
fprintf(logfile, "brk 0x%08lx\n" , info->brk);
|
| 1059 |
fprintf(logfile, "entry 0x%08lx\n" , info->entry);
|
| 1060 |
} |
| 1061 |
|
| 1062 |
target_set_brk((char *)info->brk);
|
| 1063 |
syscall_init(); |
| 1064 |
signal_init(); |
| 1065 |
|
| 1066 |
global_env = env; |
| 1067 |
|
| 1068 |
/* build Task State */
|
| 1069 |
memset(ts, 0, sizeof(TaskState)); |
| 1070 |
env->opaque = ts; |
| 1071 |
ts->used = 1;
|
| 1072 |
env->user_mode_only = 1;
|
| 1073 |
|
| 1074 |
#if defined(TARGET_I386)
|
| 1075 |
cpu_x86_set_cpl(env, 3);
|
| 1076 |
|
| 1077 |
env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
|
| 1078 |
env->hflags |= HF_PE_MASK; |
| 1079 |
if (env->cpuid_features & CPUID_SSE) {
|
| 1080 |
env->cr[4] |= CR4_OSFXSR_MASK;
|
| 1081 |
env->hflags |= HF_OSFXSR_MASK; |
| 1082 |
} |
| 1083 |
|
| 1084 |
/* flags setup : we activate the IRQs by default as in user mode */
|
| 1085 |
env->eflags |= IF_MASK; |
| 1086 |
|
| 1087 |
/* linux register setup */
|
| 1088 |
env->regs[R_EAX] = regs->eax; |
| 1089 |
env->regs[R_EBX] = regs->ebx; |
| 1090 |
env->regs[R_ECX] = regs->ecx; |
| 1091 |
env->regs[R_EDX] = regs->edx; |
| 1092 |
env->regs[R_ESI] = regs->esi; |
| 1093 |
env->regs[R_EDI] = regs->edi; |
| 1094 |
env->regs[R_EBP] = regs->ebp; |
| 1095 |
env->regs[R_ESP] = regs->esp; |
| 1096 |
env->eip = regs->eip; |
| 1097 |
|
| 1098 |
/* linux interrupt setup */
|
| 1099 |
env->idt.base = (long)idt_table;
|
| 1100 |
env->idt.limit = sizeof(idt_table) - 1; |
| 1101 |
set_idt(0, 0); |
| 1102 |
set_idt(1, 0); |
| 1103 |
set_idt(2, 0); |
| 1104 |
set_idt(3, 3); |
| 1105 |
set_idt(4, 3); |
| 1106 |
set_idt(5, 3); |
| 1107 |
set_idt(6, 0); |
| 1108 |
set_idt(7, 0); |
| 1109 |
set_idt(8, 0); |
| 1110 |
set_idt(9, 0); |
| 1111 |
set_idt(10, 0); |
| 1112 |
set_idt(11, 0); |
| 1113 |
set_idt(12, 0); |
| 1114 |
set_idt(13, 0); |
| 1115 |
set_idt(14, 0); |
| 1116 |
set_idt(15, 0); |
| 1117 |
set_idt(16, 0); |
| 1118 |
set_idt(17, 0); |
| 1119 |
set_idt(18, 0); |
| 1120 |
set_idt(19, 0); |
| 1121 |
set_idt(0x80, 3); |
| 1122 |
|
| 1123 |
/* linux segment setup */
|
| 1124 |
env->gdt.base = (long)gdt_table;
|
| 1125 |
env->gdt.limit = sizeof(gdt_table) - 1; |
| 1126 |
write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, |
| 1127 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
| 1128 |
(3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); |
| 1129 |
write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff, |
| 1130 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
| 1131 |
(3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); |
| 1132 |
cpu_x86_load_seg(env, R_CS, __USER_CS); |
| 1133 |
cpu_x86_load_seg(env, R_DS, __USER_DS); |
| 1134 |
cpu_x86_load_seg(env, R_ES, __USER_DS); |
| 1135 |
cpu_x86_load_seg(env, R_SS, __USER_DS); |
| 1136 |
cpu_x86_load_seg(env, R_FS, __USER_DS); |
| 1137 |
cpu_x86_load_seg(env, R_GS, __USER_DS); |
| 1138 |
|
| 1139 |
#elif defined(TARGET_ARM)
|
| 1140 |
{
|
| 1141 |
int i;
|
| 1142 |
for(i = 0; i < 16; i++) { |
| 1143 |
env->regs[i] = regs->uregs[i]; |
| 1144 |
} |
| 1145 |
env->cpsr = regs->uregs[16];
|
| 1146 |
} |
| 1147 |
#elif defined(TARGET_SPARC)
|
| 1148 |
{
|
| 1149 |
int i;
|
| 1150 |
env->pc = regs->pc; |
| 1151 |
env->npc = regs->npc; |
| 1152 |
env->y = regs->y; |
| 1153 |
for(i = 0; i < 8; i++) |
| 1154 |
env->gregs[i] = regs->u_regs[i]; |
| 1155 |
for(i = 0; i < 8; i++) |
| 1156 |
env->regwptr[i] = regs->u_regs[i + 8];
|
| 1157 |
} |
| 1158 |
#elif defined(TARGET_PPC)
|
| 1159 |
{
|
| 1160 |
int i;
|
| 1161 |
for (i = 0; i < 32; i++) { |
| 1162 |
if (i != 12 && i != 6) |
| 1163 |
env->msr[i] = (regs->msr >> i) & 1;
|
| 1164 |
} |
| 1165 |
env->nip = regs->nip; |
| 1166 |
for(i = 0; i < 32; i++) { |
| 1167 |
env->gpr[i] = regs->gpr[i]; |
| 1168 |
} |
| 1169 |
} |
| 1170 |
#else
|
| 1171 |
#error unsupported target CPU
|
| 1172 |
#endif
|
| 1173 |
|
| 1174 |
cpu_loop(env); |
| 1175 |
/* never exits */
|
| 1176 |
return 0; |
| 1177 |
} |