vl.c 61.3 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>
46
#include <linux/rtc.h>
bellard's avatar
bellard committed
47 48
#endif

bellard's avatar
bellard committed
49 50 51 52
#if defined(CONFIG_SLIRP)
#include "libslirp.h"
#endif

bellard's avatar
bellard committed
53 54 55 56 57 58 59
#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
60 61 62 63 64 65 66 67 68 69 70
#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 */
71 72

#include "disas.h"
bellard's avatar
bellard committed
73

74
#include "exec-all.h"
75

76 77
//#define DO_TB_FLUSH

78
#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
bellard's avatar
bellard committed
79

80
//#define DEBUG_UNUSED_IOPORT
81
//#define DEBUG_IOPORT
82

83
#if !defined(CONFIG_SOFTMMU)
bellard's avatar
bellard committed
84
#define PHYS_RAM_MAX_SIZE (256 * 1024 * 1024)
85 86 87
#else
#define PHYS_RAM_MAX_SIZE (2047 * 1024 * 1024)
#endif
bellard's avatar
bellard committed
88

89 90
/* in ms */
#define GUI_REFRESH_INTERVAL 30
91

92 93
/* XXX: use a two level table to limit memory usage */
#define MAX_IOPORTS 65536
94

bellard's avatar
bellard committed
95
const char *bios_dir = CONFIG_QEMU_SHAREDIR;
96
char phys_ram_file[1024];
97 98
CPUState *global_env;
CPUState *cpu_single_env;
99
void *ioport_opaque[MAX_IOPORTS];
bellard's avatar
bellard committed
100 101
IOPortReadFunc *ioport_read_table[3][MAX_IOPORTS];
IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS];
102
BlockDriverState *bs_table[MAX_DISKS], *fd_table[MAX_FD];
103 104
int vga_ram_size;
static DisplayState display_state;
105
int nographic;
106
int64_t ticks_per_sec;
107
int boot_device = 'c';
108
static int ram_size;
bellard's avatar
bellard committed
109 110
static char network_script[1024];
int pit_min_timer_count = 0;
111 112 113
int nb_nics;
NetDriverState nd_table[MAX_NICS];
SerialState *serial_console;
114 115
QEMUTimer *gui_timer;
int vm_running;
bellard's avatar
bellard committed
116
int audio_enabled = 0;
117 118

/***********************************************************/
119 120 121
/* x86 ISA bus support */

target_phys_addr_t isa_mem_base = 0;
122

123
uint32_t default_ioport_readb(void *opaque, uint32_t address)
124 125 126 127
{
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "inb: port=0x%04x\n", address);
#endif
bellard's avatar
bellard committed
128
    return 0xff;
129 130
}

131
void default_ioport_writeb(void *opaque, uint32_t address, uint32_t data)
132 133 134 135 136 137 138
{
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "outb: port=0x%04x data=0x%02x\n", address, data);
#endif
}

/* default is to make two byte accesses */
139
uint32_t default_ioport_readw(void *opaque, uint32_t address)
140 141
{
    uint32_t data;
142 143
    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;
144 145 146
    return data;
}

147
void default_ioport_writew(void *opaque, uint32_t address, uint32_t data)
148
{
149 150
    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);
151 152
}

153
uint32_t default_ioport_readl(void *opaque, uint32_t address)
154
{
bellard's avatar
bellard committed
155 156 157 158
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "inl: port=0x%04x\n", address);
#endif
    return 0xffffffff;
159 160
}

161
void default_ioport_writel(void *opaque, uint32_t address, uint32_t data)
162
{
bellard's avatar
bellard committed
163 164 165
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "outl: port=0x%04x data=0x%02x\n", address, data);
#endif
166 167
}

bellard's avatar
bellard committed
168
void init_ioports(void)
169 170 171
{
    int i;

bellard's avatar
bellard committed
172 173 174 175 176 177 178 179
    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;
    }
180 181
}

bellard's avatar
bellard committed
182
/* size is the word size in byte */
183 184
int register_ioport_read(int start, int length, int size, 
                         IOPortReadFunc *func, void *opaque)
bellard's avatar
bellard committed
185
{
bellard's avatar
bellard committed
186
    int i, bsize;
bellard's avatar
bellard committed
187

188
    if (size == 1) {
bellard's avatar
bellard committed
189
        bsize = 0;
190
    } else if (size == 2) {
bellard's avatar
bellard committed
191
        bsize = 1;
192
    } else if (size == 4) {
bellard's avatar
bellard committed
193
        bsize = 2;
194 195
    } else {
        hw_error("register_ioport_read: invalid size");
bellard's avatar
bellard committed
196
        return -1;
197 198
    }
    for(i = start; i < start + length; i += size) {
bellard's avatar
bellard committed
199
        ioport_read_table[bsize][i] = func;
200 201 202 203
        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
204 205 206
    return 0;
}

bellard's avatar
bellard committed
207
/* size is the word size in byte */
208 209
int register_ioport_write(int start, int length, int size, 
                          IOPortWriteFunc *func, void *opaque)
bellard's avatar
bellard committed
210
{
bellard's avatar
bellard committed
211
    int i, bsize;
bellard's avatar
bellard committed
212

213
    if (size == 1) {
bellard's avatar
bellard committed
214
        bsize = 0;
215
    } else if (size == 2) {
bellard's avatar
bellard committed
216
        bsize = 1;
217
    } else if (size == 4) {
bellard's avatar
bellard committed
218
        bsize = 2;
219 220
    } else {
        hw_error("register_ioport_write: invalid size");
bellard's avatar
bellard committed
221
        return -1;
222 223
    }
    for(i = start; i < start + length; i += size) {
bellard's avatar
bellard committed
224
        ioport_write_table[bsize][i] = func;
225 226 227 228
        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
229 230 231
    return 0;
}

232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262
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
263
    fd = open(filename, O_RDONLY | O_BINARY);
264 265 266 267 268 269 270 271 272 273 274 275
    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;
}

276
void cpu_outb(CPUState *env, int addr, int val)
277
{
278
    addr &= (MAX_IOPORTS - 1);
279 280 281 282
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "outb: %04x %02x\n", addr, val);
#endif    
283
    ioport_write_table[0][addr](ioport_opaque[addr], addr, val);
284 285
}

286
void cpu_outw(CPUState *env, int addr, int val)
287
{
288
    addr &= (MAX_IOPORTS - 1);
289 290 291 292
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "outw: %04x %04x\n", addr, val);
#endif    
293
    ioport_write_table[1][addr](ioport_opaque[addr], addr, val);
294 295
}

296
void cpu_outl(CPUState *env, int addr, int val)
297
{
298
    addr &= (MAX_IOPORTS - 1);
299 300 301 302
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "outl: %04x %08x\n", addr, val);
#endif
303
    ioport_write_table[2][addr](ioport_opaque[addr], addr, val);
304 305
}

306
int cpu_inb(CPUState *env, int addr)
307
{
308
    int val;
309
    addr &= (MAX_IOPORTS - 1);
310 311 312 313 314 315
    val = ioport_read_table[0][addr](ioport_opaque[addr], addr);
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "inb : %04x %02x\n", addr, val);
#endif
    return val;
316 317
}

318
int cpu_inw(CPUState *env, int addr)
319
{
320
    int val;
321
    addr &= (MAX_IOPORTS - 1);
322 323 324 325 326 327
    val = ioport_read_table[1][addr](ioport_opaque[addr], addr);
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "inw : %04x %04x\n", addr, val);
#endif
    return val;
328 329
}

330
int cpu_inl(CPUState *env, int addr)
331
{
332
    int val;
333
    addr &= (MAX_IOPORTS - 1);
334 335 336 337 338 339
    val = ioport_read_table[2][addr](ioport_opaque[addr], addr);
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "inl : %04x %08x\n", addr, val);
#endif
    return val;
340 341 342 343 344 345 346 347 348 349 350 351 352
}

/***********************************************************/
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);
353 354
#else
    cpu_dump_state(global_env, stderr, 0);
355 356 357 358 359
#endif
    va_end(ap);
    abort();
}

360 361 362
/***********************************************************/
/* timers */

363 364 365
#if defined(__powerpc__)

static inline uint32_t get_tbl(void) 
366
{
367 368 369
    uint32_t tbl;
    asm volatile("mftb %0" : "=r" (tbl));
    return tbl;
370 371
}

372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393
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)
394 395
{
    int64_t val;
bellard's avatar
bellard committed
396
    asm volatile ("rdtsc" : "=A" (val));
397 398 399
    return val;
}

bellard's avatar
bellard committed
400 401 402 403 404 405 406 407 408 409 410 411 412
#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;
}

413 414 415 416 417
#else
#error unsupported CPU
#endif

static int64_t cpu_ticks_offset;
418
static int cpu_ticks_enabled;
419

420
static inline int64_t cpu_get_ticks(void)
421
{
422 423 424 425 426
    if (!cpu_ticks_enabled) {
        return cpu_ticks_offset;
    } else {
        return cpu_get_real_ticks() + cpu_ticks_offset;
    }
427 428 429 430 431
}

/* enable cpu_get_ticks() */
void cpu_enable_ticks(void)
{
432 433 434 435
    if (!cpu_ticks_enabled) {
        cpu_ticks_offset -= cpu_get_real_ticks();
        cpu_ticks_enabled = 1;
    }
436 437 438 439 440 441
}

/* disable cpu_get_ticks() : the clock is stopped. You must not call
   cpu_get_ticks() after that.  */
void cpu_disable_ticks(void)
{
442 443 444 445
    if (cpu_ticks_enabled) {
        cpu_ticks_offset = cpu_get_ticks();
        cpu_ticks_enabled = 0;
    }
446 447
}

bellard's avatar
bellard committed
448
static int64_t get_clock(void)
449
{
bellard's avatar
bellard committed
450 451 452 453 454
#ifdef _WIN32
    struct _timeb tb;
    _ftime(&tb);
    return ((int64_t)tb.time * 1000 + (int64_t)tb.millitm) * 1000;
#else
455 456 457
    struct timeval tv;
    gettimeofday(&tv, NULL);
    return tv.tv_sec * 1000000LL + tv.tv_usec;
bellard's avatar
bellard committed
458
#endif
459 460
}

461 462 463 464 465
void cpu_calibrate_ticks(void)
{
    int64_t usec, ticks;

    usec = get_clock();
466
    ticks = cpu_get_real_ticks();
bellard's avatar
bellard committed
467 468 469
#ifdef _WIN32
    Sleep(50);
#else
470
    usleep(50 * 1000);
bellard's avatar
bellard committed
471
#endif
472
    usec = get_clock() - usec;
473
    ticks = cpu_get_real_ticks() - ticks;
474 475 476
    ticks_per_sec = (ticks * 1000000LL + (usec >> 1)) / usec;
}

477
/* compute with 96 bit intermediate result: (a*b)/c */
bellard's avatar
bellard committed
478
uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500
{
    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;
}

501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520
#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
521 522 523
#ifdef _WIN32
static MMRESULT timerID;
#else
524 525
/* frequency of the times() clock tick */
static int timer_freq;
bellard's avatar
bellard committed
526
#endif
527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636

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
637 638 639
#ifdef _WIN32
        return GetTickCount();
#else
640 641 642 643 644 645
        /* 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
646
#endif
647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698
    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
699 700 701 702
#ifdef _WIN32
void CALLBACK host_alarm_handler(UINT uTimerID, UINT uMsg, 
                                 DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2)
#else
703
static void host_alarm_handler(int host_signum)
bellard's avatar
bellard committed
704
#endif
705 706 707 708 709 710 711 712 713 714
{
    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);
    }
}

715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742
#ifndef _WIN32

#define RTC_FREQ 1024

static int rtc_fd;
    
static int start_rtc_timer(void)
{
    rtc_fd = open("/dev/rtc", O_RDONLY);
    if (rtc_fd < 0)
        return -1;
    if (ioctl(rtc_fd, RTC_IRQP_SET, RTC_FREQ) < 0) {
        fprintf(stderr, "Could not configure '/dev/rtc' to have a 1024 Hz timer. This is not a fatal\n"
                "error, but for better emulation accuracy either use a 2.6 host Linux kernel or\n"
                "type 'echo 1024 > /proc/sys/dev/rtc/max-user-freq' as root.\n");
        goto fail;
    }
    if (ioctl(rtc_fd, RTC_PIE_ON, 0) < 0) {
    fail:
        close(rtc_fd);
        return -1;
    }
    pit_min_timer_count = PIT_FREQ / RTC_FREQ;
    return 0;
}

#endif

743 744 745 746 747
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
748 749 750
#ifdef _WIN32
    {
        int count=0;
bellard's avatar
bellard committed
751 752 753 754 755
        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
756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772
 	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;
773
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
bellard's avatar
bellard committed
774 775 776 777
        act.sa_flags |= SA_ONSTACK;
#endif
        act.sa_handler = host_alarm_handler;
        sigaction(SIGALRM, &act, NULL);
778

bellard's avatar
bellard committed
779 780 781 782 783 784 785 786
        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);
787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807

        if (itv.it_interval.tv_usec > 1000) {
            /* try to use /dev/rtc to have a faster timer */
            if (start_rtc_timer() < 0)
                goto use_itimer;
            /* disable itimer */
            itv.it_interval.tv_sec = 0;
            itv.it_interval.tv_usec = 0;
            itv.it_value.tv_sec = 0;
            itv.it_value.tv_usec = 0;
            setitimer(ITIMER_REAL, &itv, NULL);

            /* use the RTC */
            sigaction(SIGIO, &act, NULL);
            fcntl(rtc_fd, F_SETFL, O_ASYNC);
            fcntl(rtc_fd, F_SETOWN, getpid());
        } else {
        use_itimer:
            pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * 
                                   PIT_FREQ) / 1000000;
        }
bellard's avatar
bellard committed
808
    }
809 810 811
#endif
}

bellard's avatar
bellard committed
812 813 814 815 816 817 818
void quit_timers(void)
{
#ifdef _WIN32
    timeKillEvent(timerID);
#endif
}

819 820
/***********************************************************/
/* serial device */
821

bellard's avatar
bellard committed
822 823 824 825 826 827 828 829 830
#ifdef _WIN32

int serial_open_device(void)
{
    return -1;
}

#else

831
int serial_open_device(void)
832
{
833 834
    char slave_name[1024];
    int master_fd, slave_fd;
835

836 837 838
    if (serial_console == NULL && nographic) {
        /* use console for serial port */
        return 0;
bellard's avatar
bellard committed
839
    } else {
840 841 842 843 844 845
        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;
846 847 848
    }
}

bellard's avatar
bellard committed
849 850
#endif

bellard's avatar
bellard committed
851
/***********************************************************/
bellard's avatar
bellard committed
852
/* Linux network device redirectors */
853

bellard's avatar
bellard committed
854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883
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
884

bellard's avatar
bellard committed
885 886
void qemu_add_read_packet(NetDriverState *nd, IOCanRWHandler *fd_can_read, 
                          IOReadHandler *fd_read, void *opaque)
bellard's avatar
bellard committed
887
{
bellard's avatar
bellard committed
888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907
    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
908 909 910
    return 0;
}

bellard's avatar
bellard committed
911 912 913 914 915 916 917 918 919 920 921 922 923 924 925
#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
926
{
bellard's avatar
bellard committed
927 928 929 930 931
#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
932 933
}

bellard's avatar
bellard committed
934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966
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
967

968
static int tun_open(char *ifname, int ifname_size)
969
{
bellard's avatar
bellard committed
970
    struct ifreq ifr;
971
    int fd, ret;
bellard's avatar
bellard committed
972 973 974 975 976
    
    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;
977
    }
bellard's avatar
bellard committed
978 979 980 981 982 983 984 985 986 987
    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);
988
    pstrcpy(ifname, ifname_size, ifr.ifr_name);
bellard's avatar
bellard committed
989
    fcntl(fd, F_SETFL, O_NONBLOCK);
990 991
    return fd;
}
992

bellard's avatar
bellard committed
993 994 995 996 997 998 999 1000
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)
1001
{
bellard's avatar
bellard committed
1002 1003 1004 1005 1006 1007 1008
    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];
1009 1010
    char **parg;

bellard's avatar
bellard committed
1011 1012 1013
    nd->fd = tun_open(nd->ifname, sizeof(nd->ifname));
    if (nd->fd < 0)
        return -1;
1014

bellard's avatar
bellard committed
1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030
    /* 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
1031
        }
1032
    }
bellard's avatar
bellard committed
1033 1034
    nd->send_packet = tun_send_packet;
    nd->add_read_packet = tun_add_read_packet;
bellard's avatar
bellard committed
1035
    return 0;
1036 1037
}

bellard's avatar
bellard committed
1038
static int net_fd_init(NetDriverState *nd, int fd)
1039
{
bellard's avatar
bellard committed
1040 1041 1042 1043 1044
    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
1045
}
1046

bellard's avatar
bellard committed
1047
#endif /* !_WIN32 */
bellard's avatar
bellard committed
1048

1049 1050 1051
/***********************************************************/
/* dumb display */

bellard's avatar
bellard committed
1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063
#ifdef _WIN32

static void term_exit(void)
{
}

static void term_init(void)
{
}

#else

1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081
/* 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;
1082 1083 1084 1085
    tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
    /* if graphical mode, we allow Ctrl-C handling */
    if (nographic)
        tty.c_lflag &= ~ISIG;
1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097
    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
1098 1099
#endif

1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122
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;
}

1123
#if !defined(CONFIG_SOFTMMU)
bellard's avatar
bellard committed
1124
/***********************************************************/
1125 1126 1127 1128 1129 1130 1131 1132 1133
/* 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();
}
1134
#endif
1135

1136 1137
/***********************************************************/
/* I/O handling */
1138

1139 1140 1141 1142 1143 1144 1145 1146 1147 1148
#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;
1149
    struct IOHandlerRecord *next;
1150 1151
} IOHandlerRecord;

1152
static IOHandlerRecord *first_io_handler;
1153

1154 1155
int qemu_add_fd_read_handler(int fd, IOCanRWHandler *fd_can_read, 
                             IOReadHandler *fd_read, void *opaque)
1156 1157 1158
{
    IOHandlerRecord *ioh;

1159 1160
    ioh = qemu_mallocz(sizeof(IOHandlerRecord));
    if (!ioh)
1161 1162 1163 1164 1165
        return -1;
    ioh->fd = fd;
    ioh->fd_can_read = fd_can_read;
    ioh->fd_read = fd_read;
    ioh->opaque = opaque;
1166 1167
    ioh->next = first_io_handler;
    first_io_handler = ioh;
1168 1169 1170
    return 0;
}

1171 1172 1173
void qemu_del_fd_read_handler(int fd)
{
    IOHandlerRecord **pioh, *ioh;
bellard's avatar
bellard committed
1174

1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191
    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
1192
{
1193
    fwrite(buf, 1, size, f);
bellard's avatar
bellard committed
1194 1195
}

1196
void qemu_put_byte(QEMUFile *f, int v)
bellard's avatar
bellard committed
1197
{
1198 1199 1200 1201 1202 1203 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 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
    fputc(v, f);
}

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

voi