vl.c 59.2 KB
Newer Older
1
/*
bellard's avatar
bellard committed
2
 * QEMU System Emulator
3
 * 
bellard's avatar
bellard committed
4
 * Copyright (c) 2003-2004 Fabrice Bellard
5
 * 
bellard's avatar
bellard committed
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
23
 */
bellard's avatar
bellard committed
24 25
#include "vl.h"

26 27 28 29 30 31 32
#include <getopt.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <time.h>
#include <malloc.h>
#include <errno.h>
bellard's avatar
bellard committed
33 34 35 36
#include <sys/time.h>

#ifndef _WIN32
#include <sys/times.h>
bellard's avatar
bellard committed
37
#include <sys/wait.h>
38
#include <pty.h>
bellard's avatar
bellard committed
39 40 41
#include <termios.h>
#include <sys/poll.h>
#include <sys/mman.h>
bellard's avatar
bellard committed
42 43 44 45
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <linux/if.h>
#include <linux/if_tun.h>
bellard's avatar
bellard committed
46 47
#endif

bellard's avatar
bellard committed
48 49 50 51
#if defined(CONFIG_SLIRP)
#include "libslirp.h"
#endif

bellard's avatar
bellard committed
52 53 54 55 56 57 58
#ifdef _WIN32
#include <sys/timeb.h>
#include <windows.h>
#define getopt_long_only getopt_long
#define memalign(align, size) malloc(size)
#endif

bellard's avatar
bellard committed
59 60 61 62 63 64 65 66 67 68 69
#ifdef CONFIG_SDL
/* SDL use the pthreads and they modify sigaction. We don't
   want that. */
#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
extern void __libc_sigaction();
#define sigaction(sig, act, oact) __libc_sigaction(sig, act, oact)
#else
extern void __sigaction();
#define sigaction(sig, act, oact) __sigaction(sig, act, oact)
#endif
#endif /* CONFIG_SDL */
70 71

#include "disas.h"
bellard's avatar
bellard committed
72

73
#include "exec-all.h"
74

75 76
//#define DO_TB_FLUSH

77
#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
bellard's avatar
bellard committed
78

79
//#define DEBUG_UNUSED_IOPORT
80

81
#if !defined(CONFIG_SOFTMMU)
bellard's avatar
bellard committed
82
#define PHYS_RAM_MAX_SIZE (256 * 1024 * 1024)
83 84 85
#else
#define PHYS_RAM_MAX_SIZE (2047 * 1024 * 1024)
#endif
bellard's avatar
bellard committed
86

87 88
/* in ms */
#define GUI_REFRESH_INTERVAL 30
89

90 91
/* XXX: use a two level table to limit memory usage */
#define MAX_IOPORTS 65536
92

bellard's avatar
bellard committed
93
const char *bios_dir = CONFIG_QEMU_SHAREDIR;
94
char phys_ram_file[1024];
95 96
CPUState *global_env;
CPUState *cpu_single_env;
97
void *ioport_opaque[MAX_IOPORTS];
bellard's avatar
bellard committed
98 99
IOPortReadFunc *ioport_read_table[3][MAX_IOPORTS];
IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS];
100
BlockDriverState *bs_table[MAX_DISKS], *fd_table[MAX_FD];
101 102
int vga_ram_size;
static DisplayState display_state;
103
int nographic;
104
int64_t ticks_per_sec;
105
int boot_device = 'c';
106
static int ram_size;
bellard's avatar
bellard committed
107 108
static char network_script[1024];
int pit_min_timer_count = 0;
109 110 111
int nb_nics;
NetDriverState nd_table[MAX_NICS];
SerialState *serial_console;
112 113
QEMUTimer *gui_timer;
int vm_running;
bellard's avatar
bellard committed
114
int audio_enabled = 0;
115 116

/***********************************************************/
117 118 119
/* x86 ISA bus support */

target_phys_addr_t isa_mem_base = 0;
120

121
uint32_t default_ioport_readb(void *opaque, uint32_t address)
122 123 124 125
{
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "inb: port=0x%04x\n", address);
#endif
bellard's avatar
bellard committed
126
    return 0xff;
127 128
}

129
void default_ioport_writeb(void *opaque, uint32_t address, uint32_t data)
130 131 132 133 134 135 136
{
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "outb: port=0x%04x data=0x%02x\n", address, data);
#endif
}

/* default is to make two byte accesses */
137
uint32_t default_ioport_readw(void *opaque, uint32_t address)
138 139
{
    uint32_t data;
140 141
    data = ioport_read_table[0][address & (MAX_IOPORTS - 1)](opaque, address);
    data |= ioport_read_table[0][(address + 1) & (MAX_IOPORTS - 1)](opaque, address + 1) << 8;
142 143 144
    return data;
}

145
void default_ioport_writew(void *opaque, uint32_t address, uint32_t data)
146
{
147 148
    ioport_write_table[0][address & (MAX_IOPORTS - 1)](opaque, address, data & 0xff);
    ioport_write_table[0][(address + 1) & (MAX_IOPORTS - 1)](opaque, address + 1, (data >> 8) & 0xff);
149 150
}

151
uint32_t default_ioport_readl(void *opaque, uint32_t address)
152
{
bellard's avatar
bellard committed
153 154 155 156
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "inl: port=0x%04x\n", address);
#endif
    return 0xffffffff;
157 158
}

159
void default_ioport_writel(void *opaque, uint32_t address, uint32_t data)
160
{
bellard's avatar
bellard committed
161 162 163
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "outl: port=0x%04x data=0x%02x\n", address, data);
#endif
164 165
}

bellard's avatar
bellard committed
166
void init_ioports(void)
167 168 169
{
    int i;

bellard's avatar
bellard committed
170 171 172 173 174 175 176 177
    for(i = 0; i < MAX_IOPORTS; i++) {
        ioport_read_table[0][i] = default_ioport_readb;
        ioport_write_table[0][i] = default_ioport_writeb;
        ioport_read_table[1][i] = default_ioport_readw;
        ioport_write_table[1][i] = default_ioport_writew;
        ioport_read_table[2][i] = default_ioport_readl;
        ioport_write_table[2][i] = default_ioport_writel;
    }
178 179
}

bellard's avatar
bellard committed
180
/* size is the word size in byte */
181 182
int register_ioport_read(int start, int length, int size, 
                         IOPortReadFunc *func, void *opaque)
bellard's avatar
bellard committed
183
{
bellard's avatar
bellard committed
184
    int i, bsize;
bellard's avatar
bellard committed
185

186
    if (size == 1) {
bellard's avatar
bellard committed
187
        bsize = 0;
188
    } else if (size == 2) {
bellard's avatar
bellard committed
189
        bsize = 1;
190
    } else if (size == 4) {
bellard's avatar
bellard committed
191
        bsize = 2;
192 193
    } else {
        hw_error("register_ioport_read: invalid size");
bellard's avatar
bellard committed
194
        return -1;
195 196
    }
    for(i = start; i < start + length; i += size) {
bellard's avatar
bellard committed
197
        ioport_read_table[bsize][i] = func;
198 199 200 201
        if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque)
            hw_error("register_ioport_read: invalid opaque");
        ioport_opaque[i] = opaque;
    }
bellard's avatar
bellard committed
202 203 204
    return 0;
}

bellard's avatar
bellard committed
205
/* size is the word size in byte */
206 207
int register_ioport_write(int start, int length, int size, 
                          IOPortWriteFunc *func, void *opaque)
bellard's avatar
bellard committed
208
{
bellard's avatar
bellard committed
209
    int i, bsize;
bellard's avatar
bellard committed
210

211
    if (size == 1) {
bellard's avatar
bellard committed
212
        bsize = 0;
213
    } else if (size == 2) {
bellard's avatar
bellard committed
214
        bsize = 1;
215
    } else if (size == 4) {
bellard's avatar
bellard committed
216
        bsize = 2;
217 218
    } else {
        hw_error("register_ioport_write: invalid size");
bellard's avatar
bellard committed
219
        return -1;
220 221
    }
    for(i = start; i < start + length; i += size) {
bellard's avatar
bellard committed
222
        ioport_write_table[bsize][i] = func;
223 224 225 226
        if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque)
            hw_error("register_ioport_read: invalid opaque");
        ioport_opaque[i] = opaque;
    }
bellard's avatar
bellard committed
227 228 229
    return 0;
}

230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260
void pstrcpy(char *buf, int buf_size, const char *str)
{
    int c;
    char *q = buf;

    if (buf_size <= 0)
        return;

    for(;;) {
        c = *str++;
        if (c == 0 || q >= buf + buf_size - 1)
            break;
        *q++ = c;
    }
    *q = '\0';
}

/* strcat and truncate. */
char *pstrcat(char *buf, int buf_size, const char *s)
{
    int len;
    len = strlen(buf);
    if (len < buf_size) 
        pstrcpy(buf + len, buf_size - len, s);
    return buf;
}

/* return the size or -1 if error */
int load_image(const char *filename, uint8_t *addr)
{
    int fd, size;
bellard's avatar
bellard committed
261
    fd = open(filename, O_RDONLY | O_BINARY);
262 263 264 265 266 267 268 269 270 271 272 273
    if (fd < 0)
        return -1;
    size = lseek(fd, 0, SEEK_END);
    lseek(fd, 0, SEEK_SET);
    if (read(fd, addr, size) != size) {
        close(fd);
        return -1;
    }
    close(fd);
    return size;
}

274
void cpu_outb(CPUState *env, int addr, int val)
275
{
276 277
    addr &= (MAX_IOPORTS - 1);
    ioport_write_table[0][addr](ioport_opaque[addr], addr, val);
278 279
}

280
void cpu_outw(CPUState *env, int addr, int val)
281
{
282 283
    addr &= (MAX_IOPORTS - 1);
    ioport_write_table[1][addr](ioport_opaque[addr], addr, val);
284 285
}

286
void cpu_outl(CPUState *env, int addr, int val)
287
{
288 289
    addr &= (MAX_IOPORTS - 1);
    ioport_write_table[2][addr](ioport_opaque[addr], addr, val);
290 291
}

292
int cpu_inb(CPUState *env, int addr)
293
{
294 295
    addr &= (MAX_IOPORTS - 1);
    return ioport_read_table[0][addr](ioport_opaque[addr], addr);
296 297
}

298
int cpu_inw(CPUState *env, int addr)
299
{
300 301
    addr &= (MAX_IOPORTS - 1);
    return ioport_read_table[1][addr](ioport_opaque[addr], addr);
302 303
}

304
int cpu_inl(CPUState *env, int addr)
305
{
306 307
    addr &= (MAX_IOPORTS - 1);
    return ioport_read_table[2][addr](ioport_opaque[addr], addr);
308 309 310 311 312 313 314 315 316 317 318 319 320
}

/***********************************************************/
void hw_error(const char *fmt, ...)
{
    va_list ap;

    va_start(ap, fmt);
    fprintf(stderr, "qemu: hardware error: ");
    vfprintf(stderr, fmt, ap);
    fprintf(stderr, "\n");
#ifdef TARGET_I386
    cpu_x86_dump_state(global_env, stderr, X86_DUMP_FPU | X86_DUMP_CCOP);
321 322
#else
    cpu_dump_state(global_env, stderr, 0);
323 324 325 326 327
#endif
    va_end(ap);
    abort();
}

328 329 330
/***********************************************************/
/* timers */

331 332 333
#if defined(__powerpc__)

static inline uint32_t get_tbl(void) 
334
{
335 336 337
    uint32_t tbl;
    asm volatile("mftb %0" : "=r" (tbl));
    return tbl;
338 339
}

340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361
static inline uint32_t get_tbu(void) 
{
	uint32_t tbl;
	asm volatile("mftbu %0" : "=r" (tbl));
	return tbl;
}

int64_t cpu_get_real_ticks(void)
{
    uint32_t l, h, h1;
    /* NOTE: we test if wrapping has occurred */
    do {
        h = get_tbu();
        l = get_tbl();
        h1 = get_tbu();
    } while (h != h1);
    return ((int64_t)h << 32) | l;
}

#elif defined(__i386__)

int64_t cpu_get_real_ticks(void)
362 363
{
    int64_t val;
bellard's avatar
bellard committed
364
    asm volatile ("rdtsc" : "=A" (val));
365 366 367
    return val;
}

bellard's avatar
bellard committed
368 369 370 371 372 373 374 375 376 377 378 379 380
#elif defined(__x86_64__)

int64_t cpu_get_real_ticks(void)
{
    uint32_t low,high;
    int64_t val;
    asm volatile("rdtsc" : "=a" (low), "=d" (high));
    val = high;
    val <<= 32;
    val |= low;
    return val;
}

381 382 383 384 385
#else
#error unsupported CPU
#endif

static int64_t cpu_ticks_offset;
386
static int cpu_ticks_enabled;
387

388
static inline int64_t cpu_get_ticks(void)
389
{
390 391 392 393 394
    if (!cpu_ticks_enabled) {
        return cpu_ticks_offset;
    } else {
        return cpu_get_real_ticks() + cpu_ticks_offset;
    }
395 396 397 398 399
}

/* enable cpu_get_ticks() */
void cpu_enable_ticks(void)
{
400 401 402 403
    if (!cpu_ticks_enabled) {
        cpu_ticks_offset -= cpu_get_real_ticks();
        cpu_ticks_enabled = 1;
    }
404 405 406 407 408 409
}

/* disable cpu_get_ticks() : the clock is stopped. You must not call
   cpu_get_ticks() after that.  */
void cpu_disable_ticks(void)
{
410 411 412 413
    if (cpu_ticks_enabled) {
        cpu_ticks_offset = cpu_get_ticks();
        cpu_ticks_enabled = 0;
    }
414 415
}

bellard's avatar
bellard committed
416
static int64_t get_clock(void)
417
{
bellard's avatar
bellard committed
418 419 420 421 422
#ifdef _WIN32
    struct _timeb tb;
    _ftime(&tb);
    return ((int64_t)tb.time * 1000 + (int64_t)tb.millitm) * 1000;
#else
423 424 425
    struct timeval tv;
    gettimeofday(&tv, NULL);
    return tv.tv_sec * 1000000LL + tv.tv_usec;
bellard's avatar
bellard committed
426
#endif
427 428
}

429 430 431 432 433
void cpu_calibrate_ticks(void)
{
    int64_t usec, ticks;

    usec = get_clock();
434
    ticks = cpu_get_real_ticks();
bellard's avatar
bellard committed
435 436 437
#ifdef _WIN32
    Sleep(50);
#else
438
    usleep(50 * 1000);
bellard's avatar
bellard committed
439
#endif
440
    usec = get_clock() - usec;
441
    ticks = cpu_get_real_ticks() - ticks;
442 443 444
    ticks_per_sec = (ticks * 1000000LL + (usec >> 1)) / usec;
}

445
/* compute with 96 bit intermediate result: (a*b)/c */
bellard's avatar
bellard committed
446
uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468
{
    union {
        uint64_t ll;
        struct {
#ifdef WORDS_BIGENDIAN
            uint32_t high, low;
#else
            uint32_t low, high;
#endif            
        } l;
    } u, res;
    uint64_t rl, rh;

    u.ll = a;
    rl = (uint64_t)u.l.low * (uint64_t)b;
    rh = (uint64_t)u.l.high * (uint64_t)b;
    rh += (rl >> 32);
    res.l.high = rh / c;
    res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
    return res.ll;
}

469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488
#define QEMU_TIMER_REALTIME 0
#define QEMU_TIMER_VIRTUAL  1

struct QEMUClock {
    int type;
    /* XXX: add frequency */
};

struct QEMUTimer {
    QEMUClock *clock;
    int64_t expire_time;
    QEMUTimerCB *cb;
    void *opaque;
    struct QEMUTimer *next;
};

QEMUClock *rt_clock;
QEMUClock *vm_clock;

static QEMUTimer *active_timers[2];
bellard's avatar
bellard committed
489 490 491
#ifdef _WIN32
static MMRESULT timerID;
#else
492 493
/* frequency of the times() clock tick */
static int timer_freq;
bellard's avatar
bellard committed
494
#endif
495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604

QEMUClock *qemu_new_clock(int type)
{
    QEMUClock *clock;
    clock = qemu_mallocz(sizeof(QEMUClock));
    if (!clock)
        return NULL;
    clock->type = type;
    return clock;
}

QEMUTimer *qemu_new_timer(QEMUClock *clock, QEMUTimerCB *cb, void *opaque)
{
    QEMUTimer *ts;

    ts = qemu_mallocz(sizeof(QEMUTimer));
    ts->clock = clock;
    ts->cb = cb;
    ts->opaque = opaque;
    return ts;
}

void qemu_free_timer(QEMUTimer *ts)
{
    qemu_free(ts);
}

/* stop a timer, but do not dealloc it */
void qemu_del_timer(QEMUTimer *ts)
{
    QEMUTimer **pt, *t;

    /* NOTE: this code must be signal safe because
       qemu_timer_expired() can be called from a signal. */
    pt = &active_timers[ts->clock->type];
    for(;;) {
        t = *pt;
        if (!t)
            break;
        if (t == ts) {
            *pt = t->next;
            break;
        }
        pt = &t->next;
    }
}

/* modify the current timer so that it will be fired when current_time
   >= expire_time. The corresponding callback will be called. */
void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time)
{
    QEMUTimer **pt, *t;

    qemu_del_timer(ts);

    /* add the timer in the sorted list */
    /* NOTE: this code must be signal safe because
       qemu_timer_expired() can be called from a signal. */
    pt = &active_timers[ts->clock->type];
    for(;;) {
        t = *pt;
        if (!t)
            break;
        if (t->expire_time > expire_time) 
            break;
        pt = &t->next;
    }
    ts->expire_time = expire_time;
    ts->next = *pt;
    *pt = ts;
}

int qemu_timer_pending(QEMUTimer *ts)
{
    QEMUTimer *t;
    for(t = active_timers[ts->clock->type]; t != NULL; t = t->next) {
        if (t == ts)
            return 1;
    }
    return 0;
}

static inline int qemu_timer_expired(QEMUTimer *timer_head, int64_t current_time)
{
    if (!timer_head)
        return 0;
    return (timer_head->expire_time <= current_time);
}

static void qemu_run_timers(QEMUTimer **ptimer_head, int64_t current_time)
{
    QEMUTimer *ts;
    
    for(;;) {
        ts = *ptimer_head;
        if (ts->expire_time > current_time)
            break;
        /* remove timer from the list before calling the callback */
        *ptimer_head = ts->next;
        ts->next = NULL;
        
        /* run the callback (the timer list can be modified) */
        ts->cb(ts->opaque);
    }
}

int64_t qemu_get_clock(QEMUClock *clock)
{
    switch(clock->type) {
    case QEMU_TIMER_REALTIME:
bellard's avatar
bellard committed
605 606 607
#ifdef _WIN32
        return GetTickCount();
#else
608 609 610 611 612 613
        /* XXX: portability among Linux hosts */
        if (timer_freq == 100) {
            return times(NULL) * 10;
        } else {
            return ((int64_t)times(NULL) * 1000) / timer_freq;
        }
bellard's avatar
bellard committed
614
#endif
615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666
    default:
    case QEMU_TIMER_VIRTUAL:
        return cpu_get_ticks();
    }
}

/* save a timer */
void qemu_put_timer(QEMUFile *f, QEMUTimer *ts)
{
    uint64_t expire_time;

    if (qemu_timer_pending(ts)) {
        expire_time = ts->expire_time;
    } else {
        expire_time = -1;
    }
    qemu_put_be64(f, expire_time);
}

void qemu_get_timer(QEMUFile *f, QEMUTimer *ts)
{
    uint64_t expire_time;

    expire_time = qemu_get_be64(f);
    if (expire_time != -1) {
        qemu_mod_timer(ts, expire_time);
    } else {
        qemu_del_timer(ts);
    }
}

static void timer_save(QEMUFile *f, void *opaque)
{
    if (cpu_ticks_enabled) {
        hw_error("cannot save state if virtual timers are running");
    }
    qemu_put_be64s(f, &cpu_ticks_offset);
    qemu_put_be64s(f, &ticks_per_sec);
}

static int timer_load(QEMUFile *f, void *opaque, int version_id)
{
    if (version_id != 1)
        return -EINVAL;
    if (cpu_ticks_enabled) {
        return -EINVAL;
    }
    qemu_get_be64s(f, &cpu_ticks_offset);
    qemu_get_be64s(f, &ticks_per_sec);
    return 0;
}

bellard's avatar
bellard committed
667 668 669 670
#ifdef _WIN32
void CALLBACK host_alarm_handler(UINT uTimerID, UINT uMsg, 
                                 DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2)
#else
671
static void host_alarm_handler(int host_signum)
bellard's avatar
bellard committed
672
#endif
673 674 675 676 677 678 679 680 681 682 683 684 685 686 687
{
    if (qemu_timer_expired(active_timers[QEMU_TIMER_VIRTUAL],
                           qemu_get_clock(vm_clock)) ||
        qemu_timer_expired(active_timers[QEMU_TIMER_REALTIME],
                           qemu_get_clock(rt_clock))) {
        /* stop the cpu because a timer occured */
        cpu_interrupt(global_env, CPU_INTERRUPT_EXIT);
    }
}

static void init_timers(void)
{
    rt_clock = qemu_new_clock(QEMU_TIMER_REALTIME);
    vm_clock = qemu_new_clock(QEMU_TIMER_VIRTUAL);

bellard's avatar
bellard committed
688 689 690
#ifdef _WIN32
    {
        int count=0;
bellard's avatar
bellard committed
691 692 693 694 695
        timerID = timeSetEvent(10,    // interval (ms)
                               0,     // resolution
                               host_alarm_handler, // function
                               (DWORD)&count,  // user parameter
                               TIME_PERIODIC | TIME_CALLBACK_FUNCTION);
bellard's avatar
bellard committed
696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712
 	if( !timerID ) {
            perror("failed timer alarm");
            exit(1);
 	}
    }
    pit_min_timer_count = ((uint64_t)10000 * PIT_FREQ) / 1000000;
#else
    {
        struct sigaction act;
        struct itimerval itv;
        
        /* get times() syscall frequency */
        timer_freq = sysconf(_SC_CLK_TCK);
        
        /* timer signal */
        sigfillset(&act.sa_mask);
        act.sa_flags = 0;
713
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
bellard's avatar
bellard committed
714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729
        act.sa_flags |= SA_ONSTACK;
#endif
        act.sa_handler = host_alarm_handler;
        sigaction(SIGALRM, &act, NULL);
        
        itv.it_interval.tv_sec = 0;
        itv.it_interval.tv_usec = 1000;
        itv.it_value.tv_sec = 0;
        itv.it_value.tv_usec = 10 * 1000;
        setitimer(ITIMER_REAL, &itv, NULL);
        /* we probe the tick duration of the kernel to inform the user if
           the emulated kernel requested a too high timer frequency */
        getitimer(ITIMER_REAL, &itv);
        pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * PIT_FREQ) / 
            1000000;
    }
730 731 732
#endif
}

bellard's avatar
bellard committed
733 734 735 736 737 738 739
void quit_timers(void)
{
#ifdef _WIN32
    timeKillEvent(timerID);
#endif
}

740 741
/***********************************************************/
/* serial device */
742

bellard's avatar
bellard committed
743 744 745 746 747 748 749 750 751
#ifdef _WIN32

int serial_open_device(void)
{
    return -1;
}

#else

752
int serial_open_device(void)
753
{
754 755
    char slave_name[1024];
    int master_fd, slave_fd;
756

757 758 759
    if (serial_console == NULL && nographic) {
        /* use console for serial port */
        return 0;
bellard's avatar
bellard committed
760
    } else {
761 762 763 764 765 766
        if (openpty(&master_fd, &slave_fd, slave_name, NULL, NULL) < 0) {
            fprintf(stderr, "warning: could not create pseudo terminal for serial port\n");
            return -1;
        }
        fprintf(stderr, "Serial port redirected to %s\n", slave_name);
        return master_fd;
767 768 769
    }
}

bellard's avatar
bellard committed
770 771
#endif

bellard's avatar
bellard committed
772
/***********************************************************/
bellard's avatar
bellard committed
773
/* Linux network device redirectors */
774

bellard's avatar
bellard committed
775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804
void hex_dump(FILE *f, const uint8_t *buf, int size)
{
    int len, i, j, c;

    for(i=0;i<size;i+=16) {
        len = size - i;
        if (len > 16)
            len = 16;
        fprintf(f, "%08x ", i);
        for(j=0;j<16;j++) {
            if (j < len)
                fprintf(f, " %02x", buf[i+j]);
            else
                fprintf(f, "   ");
        }
        fprintf(f, " ");
        for(j=0;j<len;j++) {
            c = buf[i+j];
            if (c < ' ' || c > '~')
                c = '.';
            fprintf(f, "%c", c);
        }
        fprintf(f, "\n");
    }
}

void qemu_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
{
    nd->send_packet(nd, buf, size);
}
bellard's avatar
bellard committed
805

bellard's avatar
bellard committed
806 807
void qemu_add_read_packet(NetDriverState *nd, IOCanRWHandler *fd_can_read, 
                          IOReadHandler *fd_read, void *opaque)
bellard's avatar
bellard committed
808
{
bellard's avatar
bellard committed
809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828
    nd->add_read_packet(nd, fd_can_read, fd_read, opaque);
}

/* dummy network adapter */

static void dummy_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
{
}

static void dummy_add_read_packet(NetDriverState *nd, 
                                  IOCanRWHandler *fd_can_read, 
                                  IOReadHandler *fd_read, void *opaque)
{
}

static int net_dummy_init(NetDriverState *nd)
{
    nd->send_packet = dummy_send_packet;
    nd->add_read_packet = dummy_add_read_packet;
    pstrcpy(nd->ifname, sizeof(nd->ifname), "dummy");
bellard's avatar
bellard committed
829 830 831
    return 0;
}

bellard's avatar
bellard committed
832 833 834 835 836 837 838 839 840 841 842 843 844 845 846
#if defined(CONFIG_SLIRP)

/* slirp network adapter */

static void *slirp_fd_opaque;
static IOCanRWHandler *slirp_fd_can_read;
static IOReadHandler *slirp_fd_read;
static int slirp_inited;

int slirp_can_output(void)
{
    return slirp_fd_can_read(slirp_fd_opaque);
}

void slirp_output(const uint8_t *pkt, int pkt_len)
bellard's avatar
bellard committed
847
{
bellard's avatar
bellard committed
848 849 850 851 852
#if 0
    printf("output:\n");
    hex_dump(stdout, pkt, pkt_len);
#endif
    slirp_fd_read(slirp_fd_opaque, pkt, pkt_len);
bellard's avatar
bellard committed
853 854
}

bellard's avatar
bellard committed
855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887
static void slirp_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
{
#if 0
    printf("input:\n");
    hex_dump(stdout, buf, size);
#endif
    slirp_input(buf, size);
}

static void slirp_add_read_packet(NetDriverState *nd, 
                                  IOCanRWHandler *fd_can_read, 
                                  IOReadHandler *fd_read, void *opaque)
{
    slirp_fd_opaque = opaque;
    slirp_fd_can_read = fd_can_read;
    slirp_fd_read = fd_read;
}

static int net_slirp_init(NetDriverState *nd)
{
    if (!slirp_inited) {
        slirp_inited = 1;
        slirp_init();
    }
    nd->send_packet = slirp_send_packet;
    nd->add_read_packet = slirp_add_read_packet;
    pstrcpy(nd->ifname, sizeof(nd->ifname), "slirp");
    return 0;
}

#endif /* CONFIG_SLIRP */

#if !defined(_WIN32)
bellard's avatar
bellard committed
888

889
static int tun_open(char *ifname, int ifname_size)
890
{
bellard's avatar
bellard committed
891
    struct ifreq ifr;
892
    int fd, ret;
bellard's avatar
bellard committed
893 894 895 896 897
    
    fd = open("/dev/net/tun", O_RDWR);
    if (fd < 0) {
        fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
        return -1;
898
    }
bellard's avatar
bellard committed
899 900 901 902 903 904 905 906 907 908
    memset(&ifr, 0, sizeof(ifr));
    ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
    pstrcpy(ifr.ifr_name, IFNAMSIZ, "tun%d");
    ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
    if (ret != 0) {
        fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
        close(fd);
        return -1;
    }
    printf("Connected to host network interface: %s\n", ifr.ifr_name);
909
    pstrcpy(ifname, ifname_size, ifr.ifr_name);
bellard's avatar
bellard committed
910
    fcntl(fd, F_SETFL, O_NONBLOCK);
911 912
    return fd;
}
913

bellard's avatar
bellard committed
914 915 916 917 918 919 920 921
static void tun_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
{
    write(nd->fd, buf, size);
}

static void tun_add_read_packet(NetDriverState *nd, 
                                IOCanRWHandler *fd_can_read, 
                                IOReadHandler *fd_read, void *opaque)
922
{
bellard's avatar
bellard committed
923 924 925 926 927 928 929
    qemu_add_fd_read_handler(nd->fd, fd_can_read, fd_read, opaque);
}

static int net_tun_init(NetDriverState *nd)
{
    int pid, status;
    char *args[3];
930 931
    char **parg;

bellard's avatar
bellard committed
932 933 934
    nd->fd = tun_open(nd->ifname, sizeof(nd->ifname));
    if (nd->fd < 0)
        return -1;
935

bellard's avatar
bellard committed
936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951
    /* try to launch network init script */
    pid = fork();
    if (pid >= 0) {
        if (pid == 0) {
            parg = args;
            *parg++ = network_script;
            *parg++ = nd->ifname;
            *parg++ = NULL;
            execv(network_script, args);
            exit(1);
        }
        while (waitpid(pid, &status, 0) != pid);
        if (!WIFEXITED(status) ||
            WEXITSTATUS(status) != 0) {
            fprintf(stderr, "%s: could not launch network script\n",
                    network_script);
bellard's avatar
bellard committed
952
        }
953
    }
bellard's avatar
bellard committed
954 955
    nd->send_packet = tun_send_packet;
    nd->add_read_packet = tun_add_read_packet;
bellard's avatar
bellard committed
956
    return 0;
957 958
}

bellard's avatar
bellard committed
959
static int net_fd_init(NetDriverState *nd, int fd)
960
{
bellard's avatar
bellard committed
961 962 963 964 965
    nd->fd = fd;
    nd->send_packet = tun_send_packet;
    nd->add_read_packet = tun_add_read_packet;
    pstrcpy(nd->ifname, sizeof(nd->ifname), "tunfd");
    return 0;
bellard's avatar
bellard committed
966
}
967

bellard's avatar
bellard committed
968
#endif /* !_WIN32 */
bellard's avatar
bellard committed
969

970 971 972
/***********************************************************/
/* dumb display */

bellard's avatar
bellard committed
973 974 975 976 977 978 979 980 981 982 983 984
#ifdef _WIN32

static void term_exit(void)
{
}

static void term_init(void)
{
}

#else

985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002
/* init terminal so that we can grab keys */
static struct termios oldtty;

static void term_exit(void)
{
    tcsetattr (0, TCSANOW, &oldtty);
}

static void term_init(void)
{
    struct termios tty;

    tcgetattr (0, &tty);
    oldtty = tty;

    tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
                          |INLCR|IGNCR|ICRNL|IXON);
    tty.c_oflag |= OPOST;
1003 1004 1005 1006
    tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
    /* if graphical mode, we allow Ctrl-C handling */
    if (nographic)
        tty.c_lflag &= ~ISIG;
1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018
    tty.c_cflag &= ~(CSIZE|PARENB);
    tty.c_cflag |= CS8;
    tty.c_cc[VMIN] = 1;
    tty.c_cc[VTIME] = 0;
    
    tcsetattr (0, TCSANOW, &tty);

    atexit(term_exit);

    fcntl(0, F_SETFL, O_NONBLOCK);
}

bellard's avatar
bellard committed
1019 1020
#endif

1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043
static void dumb_update(DisplayState *ds, int x, int y, int w, int h)
{
}

static void dumb_resize(DisplayState *ds, int w, int h)
{
}

static void dumb_refresh(DisplayState *ds)
{
    vga_update_display();
}

void dumb_display_init(DisplayState *ds)
{
    ds->data = NULL;
    ds->linesize = 0;
    ds->depth = 0;
    ds->dpy_update = dumb_update;
    ds->dpy_resize = dumb_resize;
    ds->dpy_refresh = dumb_refresh;
}

1044
#if !defined(CONFIG_SOFTMMU)
bellard's avatar
bellard committed
1045
/***********************************************************/
1046 1047 1048 1049 1050 1051 1052 1053 1054
/* cpu signal handler */
static void host_segv_handler(int host_signum, siginfo_t *info, 
                              void *puc)
{
    if (cpu_signal_handler(host_signum, info, puc))
        return;
    term_exit();
    abort();
}
1055
#endif
1056

1057 1058
/***********************************************************/
/* I/O handling */
1059

1060 1061 1062 1063 1064 1065 1066 1067 1068 1069
#define MAX_IO_HANDLERS 64

typedef struct IOHandlerRecord {
    int fd;
    IOCanRWHandler *fd_can_read;
    IOReadHandler *fd_read;
    void *opaque;
    /* temporary data */
    struct pollfd *ufd;
    int max_size;
1070
    struct IOHandlerRecord *next;
1071 1072
} IOHandlerRecord;

1073
static IOHandlerRecord *first_io_handler;
1074

1075 1076
int qemu_add_fd_read_handler(int fd, IOCanRWHandler *fd_can_read, 
                             IOReadHandler *fd_read, void *opaque)
1077 1078 1079
{
    IOHandlerRecord *ioh;

1080 1081
    ioh = qemu_mallocz(sizeof(IOHandlerRecord));
    if (!ioh)
1082 1083 1084 1085 1086
        return -1;
    ioh->fd = fd;
    ioh->fd_can_read = fd_can_read;
    ioh->fd_read = fd_read;
    ioh->opaque = opaque;
1087 1088
    ioh->next = first_io_handler;
    first_io_handler = ioh;
1089 1090 1091
    return 0;
}

1092 1093 1094
void qemu_del_fd_read_handler(int fd)
{
    IOHandlerRecord **pioh, *ioh;
bellard's avatar
bellard committed
1095

1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112
    pioh = &first_io_handler;
    for(;;) {
        ioh = *pioh;
        if (ioh == NULL)
            break;
        if (ioh->fd == fd) {
            *pioh = ioh->next;
            break;
        }
        pioh = &ioh->next;
    }
}

/***********************************************************/
/* savevm/loadvm support */

void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size)
bellard's avatar
bellard committed
1113
{
1114
    fwrite(buf, 1, size, f);
bellard's avatar
bellard committed
1115 1116
}

1117
void qemu_put_byte(QEMUFile *f, int v)
bellard's avatar
bellard committed
1118
{
1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203
    fputc(v, f);
}

void qemu_put_be16(QEMUFile *f, unsigned int v)
{
    qemu_put_byte(f, v >> 8);
    qemu_put_byte(f, v);
}

void qemu_put_be32(QEMUFile *f, unsigned int v)
{
    qemu_put_byte(f, v >> 24);
    qemu_put_byte(f, v >> 16);
    qemu_put_byte(f, v >> 8);
    qemu_put_byte(f, v);
}

void qemu_put_be64(QEMUFile *f, uint64_t v)
{
    qemu_put_be32(f, v >> 32);
    qemu_put_be32(f, v);
}

int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size)
{
    return fread(buf, 1, size, f);
}

int qemu_get_byte(QEMUFile *f)
{
    int v;
    v = fgetc(f);
    if (v == EOF)
        return 0;
    else
        return v;
}

unsigned int qemu_get_be16(QEMUFile *f)
{
    unsigned int v;
    v = qemu_get_byte(f) << 8;
    v |= qemu_get_byte(f);
    return v;
}

unsigned int qemu_get_be32(QEMUFile *f)
{
    unsigned int v;
    v = qemu_get_byte(f) << 24;
    v |= qemu_get_byte(f) << 16;
    v |= qemu_get_byte(f) << 8;
    v |= qemu_get_byte(f);
    return v;
}

uint64_t qemu_get_be64(QEMUFile *f)
{
    uint64_t v;
    v = (uint64_t)qemu_get_be32(f) << 32;
    v |= qemu_get_be32(f);
    return v;
}

int64_t qemu_ftell(QEMUFile *f)
{
    return ftell(f);
}

int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence)
{
    if (fseek(f, pos, whence) < 0)
        return -1;
    return ftell(f);
}

typedef struct SaveStateEntry {
    char idstr[256];
    int instance_id;
    int version_id;
    SaveStateHandler *save_state;
    LoadStateHandler *load_state;
    void *opaque;
    struct SaveStateEntry *next;
} SaveStateEntry;
bellard's avatar
bellard committed
1204

1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250
static SaveStateEntry *first_se;

int register_savevm(const char *idstr, 
                    int instance_id, 
                    int version_id,
                    SaveStateHandler *save_state,
                    LoadStateHandler *load_state,
                    void *opaque)
{
    SaveStateEntry *se, **pse;

    se = qemu_malloc(sizeof(SaveStateEntry));
    if (!se)
        return -1;
    pstrcpy(se->idstr, sizeof(se->idstr), idstr);
    se->instance_id = instance_id;
    se->version_id = version_id;
    se->save_state = save_state;
    se->load_state = load_state;
    se->opaque = opaque;
    se->next = NULL;

    /* add at the end of list */
    pse = &first_se;
    while (*pse != NULL)
        pse = &(*pse)->next;
    *pse = se;
    return 0;
}

#define QEMU_VM_FILE_MAGIC   0x5145564d
#define QEMU_VM_FILE_VERSION 0x00000001

int qemu_savevm(const char *filename)
{
    SaveStateEntry *se;
    QEMUFile *f;
    int len, len_pos, cur_pos, saved_vm_running, ret;

    saved_vm_running = vm_running;
    vm_stop(0);

    f = fopen(filename, "wb");
    if (!f) {
        ret = -1;
        goto the_end;
1251 1252
    }

1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326
    qemu_put_be32(f, QEMU_VM_FILE_MAGIC);
    qemu_put_be32(f, QEMU_VM_FILE_VERSION);

    for(se = first_se; se != NULL; se = se->next) {
        /* ID string */
        len = strlen(se->idstr);
        qemu_put_byte(f, len);
        qemu_put_buffer(f, se->idstr, len);

        qemu_put_be32(f, se->instance_id);
        qemu_put_be32(f, se->version_id);

        /* record size: filled later */
        len_pos = ftell(f);
        qemu_put_be32(f, 0);
        
        se->save_state(f, se->opaque);

        /* fill record size */
        cur_pos = ftell(f);
        len = ftell(f) - len_pos - 4;
        fseek(f, len_pos, SEEK_SET);
        qemu_put_be32(f, len);
        fseek(f, cur_pos, SEEK_SET);
    }

    fclose(f);
    ret = 0;
 the_end:
    if (saved_vm_running)
        vm_start();
    return ret;
}

static SaveStateEntry *find_se(const char *idstr, int instance_id)
{
    SaveStateEntry *se;

    for(se = first_se; se != NULL; se = se->next) {
        if (!