vl.c 70.8 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
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <time.h>
#include <errno.h>
bellard's avatar
bellard committed
31 32 33 34
#include <sys/time.h>

#ifndef _WIN32
#include <sys/times.h>
bellard's avatar
bellard committed
35
#include <sys/wait.h>
bellard's avatar
bellard committed
36 37 38
#include <termios.h>
#include <sys/poll.h>
#include <sys/mman.h>
bellard's avatar
bellard committed
39 40
#include <sys/ioctl.h>
#include <sys/socket.h>
bellard's avatar
bellard committed
41 42 43 44
#ifdef _BSD
#include <sys/stat.h>
#include <libutil.h>
#else
bellard's avatar
bellard committed
45 46
#include <linux/if.h>
#include <linux/if_tun.h>
bellard's avatar
bellard committed
47 48
#include <pty.h>
#include <malloc.h>
49
#include <linux/rtc.h>
bellard's avatar
bellard committed
50
#endif
bellard's avatar
bellard committed
51
#endif
bellard's avatar
bellard committed
52

bellard's avatar
bellard committed
53 54 55 56
#if defined(CONFIG_SLIRP)
#include "libslirp.h"
#endif

bellard's avatar
bellard committed
57
#ifdef _WIN32
bellard's avatar
bellard committed
58
#include <malloc.h>
bellard's avatar
bellard committed
59 60 61 62 63 64
#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
65
#ifdef CONFIG_SDL
bellard's avatar
bellard committed
66
#if defined(__linux__)
bellard's avatar
bellard committed
67 68
/* SDL use the pthreads and they modify sigaction. We don't
   want that. */
bellard's avatar
bellard committed
69
#if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2))
bellard's avatar
bellard committed
70 71 72 73 74 75
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
bellard's avatar
bellard committed
76
#endif /* __linux__ */
bellard's avatar
bellard committed
77
#endif /* CONFIG_SDL */
78 79

#include "disas.h"
bellard's avatar
bellard committed
80

81
#include "exec-all.h"
82

83 84
//#define DO_TB_FLUSH

85
#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
bellard's avatar
bellard committed
86

87
//#define DEBUG_UNUSED_IOPORT
88
//#define DEBUG_IOPORT
89

90
#if !defined(CONFIG_SOFTMMU)
bellard's avatar
bellard committed
91
#define PHYS_RAM_MAX_SIZE (256 * 1024 * 1024)
92 93 94
#else
#define PHYS_RAM_MAX_SIZE (2047 * 1024 * 1024)
#endif
bellard's avatar
bellard committed
95

bellard's avatar
bellard committed
96 97 98
#ifdef TARGET_PPC
#define DEFAULT_RAM_SIZE 144
#else
99
#define DEFAULT_RAM_SIZE 32
bellard's avatar
bellard committed
100
#endif
101 102
/* in ms */
#define GUI_REFRESH_INTERVAL 30
103

104 105
/* XXX: use a two level table to limit memory usage */
#define MAX_IOPORTS 65536
106

bellard's avatar
bellard committed
107
const char *bios_dir = CONFIG_QEMU_SHAREDIR;
108
char phys_ram_file[1024];
109 110
CPUState *global_env;
CPUState *cpu_single_env;
111
void *ioport_opaque[MAX_IOPORTS];
bellard's avatar
bellard committed
112 113
IOPortReadFunc *ioport_read_table[3][MAX_IOPORTS];
IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS];
114
BlockDriverState *bs_table[MAX_DISKS], *fd_table[MAX_FD];
115
int vga_ram_size;
bellard's avatar
bellard committed
116
int bios_size;
117
static DisplayState display_state;
118
int nographic;
119
int64_t ticks_per_sec;
120
int boot_device = 'c';
bellard's avatar
bellard committed
121
int ram_size;
bellard's avatar
bellard committed
122 123
static char network_script[1024];
int pit_min_timer_count = 0;
124 125 126
int nb_nics;
NetDriverState nd_table[MAX_NICS];
SerialState *serial_console;
127 128
QEMUTimer *gui_timer;
int vm_running;
bellard's avatar
bellard committed
129
int audio_enabled = 0;
130
int pci_enabled = 1;
bellard's avatar
bellard committed
131
int prep_enabled = 0;
bellard's avatar
bellard committed
132
int rtc_utc = 1;
bellard's avatar
bellard committed
133
int cirrus_vga_enabled = 0;
134 135 136
int graphic_width = 640;
int graphic_height = 480;
int graphic_depth = 15;
137 138

/***********************************************************/
139 140 141
/* x86 ISA bus support */

target_phys_addr_t isa_mem_base = 0;
142

143
uint32_t default_ioport_readb(void *opaque, uint32_t address)
144 145 146 147
{
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "inb: port=0x%04x\n", address);
#endif
bellard's avatar
bellard committed
148
    return 0xff;
149 150
}

151
void default_ioport_writeb(void *opaque, uint32_t address, uint32_t data)
152 153 154 155 156 157 158
{
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "outb: port=0x%04x data=0x%02x\n", address, data);
#endif
}

/* default is to make two byte accesses */
159
uint32_t default_ioport_readw(void *opaque, uint32_t address)
160 161
{
    uint32_t data;
bellard's avatar
bellard committed
162 163 164
    data = ioport_read_table[0][address](ioport_opaque[address], address);
    address = (address + 1) & (MAX_IOPORTS - 1);
    data |= ioport_read_table[0][address](ioport_opaque[address], address) << 8;
165 166 167
    return data;
}

168
void default_ioport_writew(void *opaque, uint32_t address, uint32_t data)
169
{
bellard's avatar
bellard committed
170 171 172
    ioport_write_table[0][address](ioport_opaque[address], address, data & 0xff);
    address = (address + 1) & (MAX_IOPORTS - 1);
    ioport_write_table[0][address](ioport_opaque[address], address, (data >> 8) & 0xff);
173 174
}

175
uint32_t default_ioport_readl(void *opaque, uint32_t address)
176
{
bellard's avatar
bellard committed
177 178 179 180
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "inl: port=0x%04x\n", address);
#endif
    return 0xffffffff;
181 182
}

183
void default_ioport_writel(void *opaque, uint32_t address, uint32_t data)
184
{
bellard's avatar
bellard committed
185 186 187
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "outl: port=0x%04x data=0x%02x\n", address, data);
#endif
188 189
}

bellard's avatar
bellard committed
190
void init_ioports(void)
191 192 193
{
    int i;

bellard's avatar
bellard committed
194 195 196 197 198 199 200 201
    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;
    }
202 203
}

bellard's avatar
bellard committed
204
/* size is the word size in byte */
205 206
int register_ioport_read(int start, int length, int size, 
                         IOPortReadFunc *func, void *opaque)
bellard's avatar
bellard committed
207
{
bellard's avatar
bellard committed
208
    int i, bsize;
bellard's avatar
bellard committed
209

210
    if (size == 1) {
bellard's avatar
bellard committed
211
        bsize = 0;
212
    } else if (size == 2) {
bellard's avatar
bellard committed
213
        bsize = 1;
214
    } else if (size == 4) {
bellard's avatar
bellard committed
215
        bsize = 2;
216 217
    } else {
        hw_error("register_ioport_read: invalid size");
bellard's avatar
bellard committed
218
        return -1;
219 220
    }
    for(i = start; i < start + length; i += size) {
bellard's avatar
bellard committed
221
        ioport_read_table[bsize][i] = func;
222 223 224 225
        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
226 227 228
    return 0;
}

bellard's avatar
bellard committed
229
/* size is the word size in byte */
230 231
int register_ioport_write(int start, int length, int size, 
                          IOPortWriteFunc *func, void *opaque)
bellard's avatar
bellard committed
232
{
bellard's avatar
bellard committed
233
    int i, bsize;
bellard's avatar
bellard committed
234

235
    if (size == 1) {
bellard's avatar
bellard committed
236
        bsize = 0;
237
    } else if (size == 2) {
bellard's avatar
bellard committed
238
        bsize = 1;
239
    } else if (size == 4) {
bellard's avatar
bellard committed
240
        bsize = 2;
241 242
    } else {
        hw_error("register_ioport_write: invalid size");
bellard's avatar
bellard committed
243
        return -1;
244 245
    }
    for(i = start; i < start + length; i += size) {
bellard's avatar
bellard committed
246
        ioport_write_table[bsize][i] = func;
247 248 249 250
        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
251 252 253
    return 0;
}

bellard's avatar
bellard committed
254 255 256 257 258 259 260 261 262 263 264 265 266 267 268
void isa_unassign_ioport(int start, int length)
{
    int i;

    for(i = start; i < start + length; i++) {
        ioport_read_table[0][i] = default_ioport_readb;
        ioport_read_table[1][i] = default_ioport_readw;
        ioport_read_table[2][i] = default_ioport_readl;

        ioport_write_table[0][i] = default_ioport_writeb;
        ioport_write_table[1][i] = default_ioport_writew;
        ioport_write_table[2][i] = default_ioport_writel;
    }
}

269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295
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;
}

bellard's avatar
bellard committed
296 297 298 299 300 301 302 303 304 305 306 307
/* return the size or -1 if error */
int get_image_size(const char *filename)
{
    int fd, size;
    fd = open(filename, O_RDONLY | O_BINARY);
    if (fd < 0)
        return -1;
    size = lseek(fd, 0, SEEK_END);
    close(fd);
    return size;
}

308 309 310 311
/* return the size or -1 if error */
int load_image(const char *filename, uint8_t *addr)
{
    int fd, size;
bellard's avatar
bellard committed
312
    fd = open(filename, O_RDONLY | O_BINARY);
313 314 315 316 317 318 319 320 321 322 323 324
    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;
}

325
void cpu_outb(CPUState *env, int addr, int val)
326
{
327 328 329 330
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "outb: %04x %02x\n", addr, val);
#endif    
331
    ioport_write_table[0][addr](ioport_opaque[addr], addr, val);
332 333
}

334
void cpu_outw(CPUState *env, int addr, int val)
335
{
336 337 338 339
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "outw: %04x %04x\n", addr, val);
#endif    
340
    ioport_write_table[1][addr](ioport_opaque[addr], addr, val);
341 342
}

343
void cpu_outl(CPUState *env, int addr, int val)
344
{
345 346 347 348
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "outl: %04x %08x\n", addr, val);
#endif
349
    ioport_write_table[2][addr](ioport_opaque[addr], addr, val);
350 351
}

352
int cpu_inb(CPUState *env, int addr)
353
{
354 355 356 357 358 359 360
    int val;
    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;
361 362
}

363
int cpu_inw(CPUState *env, int addr)
364
{
365 366 367 368 369 370 371
    int val;
    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;
372 373
}

374
int cpu_inl(CPUState *env, int addr)
375
{
376 377 378 379 380 381 382
    int val;
    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;
383 384 385 386 387 388 389 390 391 392 393 394 395
}

/***********************************************************/
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);
396 397
#else
    cpu_dump_state(global_env, stderr, 0);
398 399 400 401 402
#endif
    va_end(ap);
    abort();
}

bellard's avatar
bellard committed
403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437
/***********************************************************/
/* keyboard/mouse */

static QEMUPutKBDEvent *qemu_put_kbd_event;
static void *qemu_put_kbd_event_opaque;
static QEMUPutMouseEvent *qemu_put_mouse_event;
static void *qemu_put_mouse_event_opaque;

void qemu_add_kbd_event_handler(QEMUPutKBDEvent *func, void *opaque)
{
    qemu_put_kbd_event_opaque = opaque;
    qemu_put_kbd_event = func;
}

void qemu_add_mouse_event_handler(QEMUPutMouseEvent *func, void *opaque)
{
    qemu_put_mouse_event_opaque = opaque;
    qemu_put_mouse_event = func;
}

void kbd_put_keycode(int keycode)
{
    if (qemu_put_kbd_event) {
        qemu_put_kbd_event(qemu_put_kbd_event_opaque, keycode);
    }
}

void kbd_mouse_event(int dx, int dy, int dz, int buttons_state)
{
    if (qemu_put_mouse_event) {
        qemu_put_mouse_event(qemu_put_mouse_event_opaque, 
                             dx, dy, dz, buttons_state);
    }
}

438 439 440
/***********************************************************/
/* timers */

441 442 443
#if defined(__powerpc__)

static inline uint32_t get_tbl(void) 
444
{
445 446 447
    uint32_t tbl;
    asm volatile("mftb %0" : "=r" (tbl));
    return tbl;
448 449
}

450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471
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)
472 473
{
    int64_t val;
bellard's avatar
bellard committed
474
    asm volatile ("rdtsc" : "=A" (val));
475 476 477
    return val;
}

bellard's avatar
bellard committed
478 479 480 481 482 483 484 485 486 487 488 489 490
#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;
}

491 492 493 494 495
#else
#error unsupported CPU
#endif

static int64_t cpu_ticks_offset;
496
static int cpu_ticks_enabled;
497

498
static inline int64_t cpu_get_ticks(void)
499
{
500 501 502 503 504
    if (!cpu_ticks_enabled) {
        return cpu_ticks_offset;
    } else {
        return cpu_get_real_ticks() + cpu_ticks_offset;
    }
505 506 507 508 509
}

/* enable cpu_get_ticks() */
void cpu_enable_ticks(void)
{
510 511 512 513
    if (!cpu_ticks_enabled) {
        cpu_ticks_offset -= cpu_get_real_ticks();
        cpu_ticks_enabled = 1;
    }
514 515 516 517 518 519
}

/* disable cpu_get_ticks() : the clock is stopped. You must not call
   cpu_get_ticks() after that.  */
void cpu_disable_ticks(void)
{
520 521 522 523
    if (cpu_ticks_enabled) {
        cpu_ticks_offset = cpu_get_ticks();
        cpu_ticks_enabled = 0;
    }
524 525
}

bellard's avatar
bellard committed
526
static int64_t get_clock(void)
527
{
bellard's avatar
bellard committed
528 529 530 531 532
#ifdef _WIN32
    struct _timeb tb;
    _ftime(&tb);
    return ((int64_t)tb.time * 1000 + (int64_t)tb.millitm) * 1000;
#else
533 534 535
    struct timeval tv;
    gettimeofday(&tv, NULL);
    return tv.tv_sec * 1000000LL + tv.tv_usec;
bellard's avatar
bellard committed
536
#endif
537 538
}

539 540 541 542 543
void cpu_calibrate_ticks(void)
{
    int64_t usec, ticks;

    usec = get_clock();
544
    ticks = cpu_get_real_ticks();
bellard's avatar
bellard committed
545 546 547
#ifdef _WIN32
    Sleep(50);
#else
548
    usleep(50 * 1000);
bellard's avatar
bellard committed
549
#endif
550
    usec = get_clock() - usec;
551
    ticks = cpu_get_real_ticks() - ticks;
552 553 554
    ticks_per_sec = (ticks * 1000000LL + (usec >> 1)) / usec;
}

555
/* compute with 96 bit intermediate result: (a*b)/c */
bellard's avatar
bellard committed
556
uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578
{
    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;
}

579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598
#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
599 600 601
#ifdef _WIN32
static MMRESULT timerID;
#else
602 603
/* frequency of the times() clock tick */
static int timer_freq;
bellard's avatar
bellard committed
604
#endif
605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714

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
715 716 717
#ifdef _WIN32
        return GetTickCount();
#else
bellard's avatar
bellard committed
718 719 720 721 722 723 724 725 726 727 728
        {
            struct tms tp;

            /* Note that using gettimeofday() is not a good solution
               for timers because its value change when the date is
               modified. */
            if (timer_freq == 100) {
                return times(&tp) * 10;
            } else {
                return ((int64_t)times(&tp) * 1000) / timer_freq;
            }
729
        }
bellard's avatar
bellard committed
730
#endif
731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782
    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
783 784 785 786
#ifdef _WIN32
void CALLBACK host_alarm_handler(UINT uTimerID, UINT uMsg, 
                                 DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2)
#else
787
static void host_alarm_handler(int host_signum)
bellard's avatar
bellard committed
788
#endif
789 790 791 792 793 794 795 796 797 798
{
    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);
    }
}

799 800
#ifndef _WIN32

bellard's avatar
BSD fix  
bellard committed
801 802
#if defined(__linux__)

803 804 805
#define RTC_FREQ 1024

static int rtc_fd;
bellard's avatar
BSD fix  
bellard committed
806

807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826
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;
}

bellard's avatar
BSD fix  
bellard committed
827 828 829 830 831 832 833 834 835 836
#else

static int start_rtc_timer(void)
{
    return -1;
}

#endif /* !defined(__linux__) */

#endif /* !defined(_WIN32) */
837

838 839 840 841 842
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
843 844 845
#ifdef _WIN32
    {
        int count=0;
bellard's avatar
bellard committed
846 847 848 849 850
        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
851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867
 	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;
868
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
bellard's avatar
bellard committed
869 870 871 872
        act.sa_flags |= SA_ONSTACK;
#endif
        act.sa_handler = host_alarm_handler;
        sigaction(SIGALRM, &act, NULL);
873

bellard's avatar
bellard committed
874 875 876 877 878 879 880 881
        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);
882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902

        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
903
    }
904 905 906
#endif
}

bellard's avatar
bellard committed
907 908 909 910 911 912 913
void quit_timers(void)
{
#ifdef _WIN32
    timeKillEvent(timerID);
#endif
}

914 915
/***********************************************************/
/* serial device */
916

bellard's avatar
bellard committed
917 918 919 920 921 922 923 924 925
#ifdef _WIN32

int serial_open_device(void)
{
    return -1;
}

#else

926
int serial_open_device(void)
927
{
928 929
    char slave_name[1024];
    int master_fd, slave_fd;
930

931 932 933
    if (serial_console == NULL && nographic) {
        /* use console for serial port */
        return 0;
bellard's avatar
bellard committed
934
    } else {
bellard's avatar
bellard committed
935 936
#if 0
        /* Not satisfying */
937 938 939 940 941 942
        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;
bellard's avatar
bellard committed
943 944 945
#else
        return -1;
#endif
946 947 948
    }
}

bellard's avatar
bellard committed
949 950
#endif

bellard's avatar
bellard committed
951
/***********************************************************/
bellard's avatar
bellard committed
952
/* Linux network device redirectors */
953

bellard's avatar
bellard committed
954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983
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
984

bellard's avatar
bellard committed
985 986
void qemu_add_read_packet(NetDriverState *nd, IOCanRWHandler *fd_can_read, 
                          IOReadHandler *fd_read, void *opaque)
bellard's avatar
bellard committed
987
{
bellard's avatar
bellard committed
988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007
    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
1008 1009 1010
    return 0;
}

bellard's avatar
bellard committed
1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025
#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
1026
{
bellard's avatar
bellard committed
1027 1028 1029 1030 1031
#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
1032 1033
}

bellard's avatar
bellard committed
1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066
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
1067 1068 1069 1070 1071 1072
#ifdef _BSD
static int tun_open(char *ifname, int ifname_size)
{
    int fd;
    char *dev;
    struct stat s;
bellard's avatar
bellard committed
1073

bellard's avatar
bellard committed
1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087
    fd = open("/dev/tap", O_RDWR);
    if (fd < 0) {
        fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
        return -1;
    }

    fstat(fd, &s);
    dev = devname(s.st_rdev, S_IFCHR);
    pstrcpy(ifname, ifname_size, dev);

    fcntl(fd, F_SETFL, O_NONBLOCK);
    return fd;
}
#else
1088
static int tun_open(char *ifname, int ifname_size)
1089
{
bellard's avatar
bellard committed
1090
    struct ifreq ifr;
1091
    int fd, ret;
bellard's avatar
bellard committed
1092 1093 1094 1095 1096
    
    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;
1097
    }
bellard's avatar
bellard committed
1098 1099 1100 1101 1102 1103 1104 1105 1106 1107
    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);
1108
    pstrcpy(ifname, ifname_size, ifr.ifr_name);
bellard's avatar
bellard committed
1109
    fcntl(fd, F_SETFL, O_NONBLOCK);
1110 1111
    return fd;
}
bellard's avatar
bellard committed
1112
#endif
1113

bellard's avatar
bellard committed
1114 1115 1116 1117 1118 1119 1120 1121
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)
1122
{
bellard's avatar
bellard committed
1123 1124 1125 1126 1127 1128 1129
    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];
1130 1131
    char **parg;

bellard's avatar
bellard committed
1132 1133 1134
    nd->fd = tun_open(nd->ifname, sizeof(nd->ifname));
    if (nd->fd < 0)
        return -1;
1135

bellard's avatar
bellard committed
1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151
    /* 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
1152
        }
1153
    }
bellard's avatar
bellard committed
1154 1155
    nd->send_packet = tun_send_packet;
    nd->add_read_packet = tun_add_read_packet;
bellard's avatar
bellard committed
1156
    return 0;
1157 1158
}

bellard's avatar
bellard committed
1159
static int net_fd_init(NetDriverState *nd, int fd)
1160
{
bellard's avatar
bellard committed
1161 1162 1163 1164 1165
    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
1166
}
1167

bellard's avatar
bellard committed
1168
#endif /* !_WIN32 */