vl.c 66.3 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
#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;
bellard's avatar
bellard committed
130
int pci_enabled = 0;
bellard's avatar
bellard committed
131
int prep_enabled = 0;
bellard's avatar
bellard committed
132
int rtc_utc = 1;
133 134

/***********************************************************/
135 136 137
/* x86 ISA bus support */

target_phys_addr_t isa_mem_base = 0;
138

139
uint32_t default_ioport_readb(void *opaque, uint32_t address)
140 141 142 143
{
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "inb: port=0x%04x\n", address);
#endif
bellard's avatar
bellard committed
144
    return 0xff;
145 146
}

147
void default_ioport_writeb(void *opaque, uint32_t address, uint32_t data)
148 149 150 151 152 153 154
{
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "outb: port=0x%04x data=0x%02x\n", address, data);
#endif
}

/* default is to make two byte accesses */
155
uint32_t default_ioport_readw(void *opaque, uint32_t address)
156 157
{
    uint32_t data;
bellard's avatar
bellard committed
158 159 160
    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;
161 162 163
    return data;
}

164
void default_ioport_writew(void *opaque, uint32_t address, uint32_t data)
165
{
bellard's avatar
bellard committed
166 167 168
    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);
169 170
}

171
uint32_t default_ioport_readl(void *opaque, uint32_t address)
172
{
bellard's avatar
bellard committed
173 174 175 176
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "inl: port=0x%04x\n", address);
#endif
    return 0xffffffff;
177 178
}

179
void default_ioport_writel(void *opaque, uint32_t address, uint32_t data)
180
{
bellard's avatar
bellard committed
181 182 183
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "outl: port=0x%04x data=0x%02x\n", address, data);
#endif
184 185
}

bellard's avatar
bellard committed
186
void init_ioports(void)
187 188 189
{
    int i;

bellard's avatar
bellard committed
190 191 192 193 194 195 196 197
    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;
    }
198 199
}

bellard's avatar
bellard committed
200
/* size is the word size in byte */
201 202
int register_ioport_read(int start, int length, int size, 
                         IOPortReadFunc *func, void *opaque)
bellard's avatar
bellard committed
203
{
bellard's avatar
bellard committed
204
    int i, bsize;
bellard's avatar
bellard committed
205

206
    if (size == 1) {
bellard's avatar
bellard committed
207
        bsize = 0;
208
    } else if (size == 2) {
bellard's avatar
bellard committed
209
        bsize = 1;
210
    } else if (size == 4) {
bellard's avatar
bellard committed
211
        bsize = 2;
212 213
    } else {
        hw_error("register_ioport_read: invalid size");
bellard's avatar
bellard committed
214
        return -1;
215 216
    }
    for(i = start; i < start + length; i += size) {
bellard's avatar
bellard committed
217
        ioport_read_table[bsize][i] = func;
218 219 220 221
        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
222 223 224
    return 0;
}

bellard's avatar
bellard committed
225
/* size is the word size in byte */
226 227
int register_ioport_write(int start, int length, int size, 
                          IOPortWriteFunc *func, void *opaque)
bellard's avatar
bellard committed
228
{
bellard's avatar
bellard committed
229
    int i, bsize;
bellard's avatar
bellard committed
230

231
    if (size == 1) {
bellard's avatar
bellard committed
232
        bsize = 0;
233
    } else if (size == 2) {
bellard's avatar
bellard committed
234
        bsize = 1;
235
    } else if (size == 4) {
bellard's avatar
bellard committed
236
        bsize = 2;
237 238
    } else {
        hw_error("register_ioport_write: invalid size");
bellard's avatar
bellard committed
239
        return -1;
240 241
    }
    for(i = start; i < start + length; i += size) {
bellard's avatar
bellard committed
242
        ioport_write_table[bsize][i] = func;
243 244 245 246
        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
247 248 249
    return 0;
}

bellard's avatar
bellard committed
250 251 252 253 254 255 256 257 258 259 260 261 262 263 264
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;
    }
}

265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295
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;
}

/* return the size or -1 if error */
int load_image(const char *filename, uint8_t *addr)
{
    int fd, size;
bellard's avatar
bellard committed
296
    fd = open(filename, O_RDONLY | O_BINARY);
297 298 299 300 301 302 303 304 305 306 307 308
    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;
}

309
void cpu_outb(CPUState *env, int addr, int val)
310
{
311 312 313 314
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "outb: %04x %02x\n", addr, val);
#endif    
315
    ioport_write_table[0][addr](ioport_opaque[addr], addr, val);
316 317
}

318
void cpu_outw(CPUState *env, int addr, int val)
319
{
320 321 322 323
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "outw: %04x %04x\n", addr, val);
#endif    
324
    ioport_write_table[1][addr](ioport_opaque[addr], addr, val);
325 326
}

327
void cpu_outl(CPUState *env, int addr, int val)
328
{
329 330 331 332
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "outl: %04x %08x\n", addr, val);
#endif
333
    ioport_write_table[2][addr](ioport_opaque[addr], addr, val);
334 335
}

336
int cpu_inb(CPUState *env, int addr)
337
{
338 339 340 341 342 343 344
    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;
345 346
}

347
int cpu_inw(CPUState *env, int addr)
348
{
349 350 351 352 353 354 355
    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;
356 357
}

358
int cpu_inl(CPUState *env, int addr)
359
{
360 361 362 363 364 365 366
    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;
367 368 369 370 371 372 373 374 375 376 377 378 379
}

/***********************************************************/
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);
380 381
#else
    cpu_dump_state(global_env, stderr, 0);
382 383 384 385 386
#endif
    va_end(ap);
    abort();
}

387 388 389
/***********************************************************/
/* timers */

390 391 392
#if defined(__powerpc__)

static inline uint32_t get_tbl(void) 
393
{
394 395 396
    uint32_t tbl;
    asm volatile("mftb %0" : "=r" (tbl));
    return tbl;
397 398
}

399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420
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)
421 422
{
    int64_t val;
bellard's avatar
bellard committed
423
    asm volatile ("rdtsc" : "=A" (val));
424 425 426
    return val;
}

bellard's avatar
bellard committed
427 428 429 430 431 432 433 434 435 436 437 438 439
#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;
}

440 441 442 443 444
#else
#error unsupported CPU
#endif

static int64_t cpu_ticks_offset;
445
static int cpu_ticks_enabled;
446

447
static inline int64_t cpu_get_ticks(void)
448
{
449 450 451 452 453
    if (!cpu_ticks_enabled) {
        return cpu_ticks_offset;
    } else {
        return cpu_get_real_ticks() + cpu_ticks_offset;
    }
454 455 456 457 458
}

/* enable cpu_get_ticks() */
void cpu_enable_ticks(void)
{
459 460 461 462
    if (!cpu_ticks_enabled) {
        cpu_ticks_offset -= cpu_get_real_ticks();
        cpu_ticks_enabled = 1;
    }
463 464 465 466 467 468
}

/* disable cpu_get_ticks() : the clock is stopped. You must not call
   cpu_get_ticks() after that.  */
void cpu_disable_ticks(void)
{
469 470 471 472
    if (cpu_ticks_enabled) {
        cpu_ticks_offset = cpu_get_ticks();
        cpu_ticks_enabled = 0;
    }
473 474
}

bellard's avatar
bellard committed
475
static int64_t get_clock(void)
476
{
bellard's avatar
bellard committed
477 478 479 480 481
#ifdef _WIN32
    struct _timeb tb;
    _ftime(&tb);
    return ((int64_t)tb.time * 1000 + (int64_t)tb.millitm) * 1000;
#else
482 483 484
    struct timeval tv;
    gettimeofday(&tv, NULL);
    return tv.tv_sec * 1000000LL + tv.tv_usec;
bellard's avatar
bellard committed
485
#endif
486 487
}

488 489 490 491 492
void cpu_calibrate_ticks(void)
{
    int64_t usec, ticks;

    usec = get_clock();
493
    ticks = cpu_get_real_ticks();
bellard's avatar
bellard committed
494 495 496
#ifdef _WIN32
    Sleep(50);
#else
497
    usleep(50 * 1000);
bellard's avatar
bellard committed
498
#endif
499
    usec = get_clock() - usec;
500
    ticks = cpu_get_real_ticks() - ticks;
501 502 503
    ticks_per_sec = (ticks * 1000000LL + (usec >> 1)) / usec;
}

504
/* compute with 96 bit intermediate result: (a*b)/c */
bellard's avatar
bellard committed
505
uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527
{
    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;
}

528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547
#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
548 549 550
#ifdef _WIN32
static MMRESULT timerID;
#else
551 552
/* frequency of the times() clock tick */
static int timer_freq;
bellard's avatar
bellard committed
553
#endif
554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663

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
664 665 666
#ifdef _WIN32
        return GetTickCount();
#else
bellard's avatar
bellard committed
667 668 669 670 671 672 673 674 675 676 677
        {
            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;
            }
678
        }
bellard's avatar
bellard committed
679
#endif
680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731
    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
732 733 734 735
#ifdef _WIN32
void CALLBACK host_alarm_handler(UINT uTimerID, UINT uMsg, 
                                 DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2)
#else
736
static void host_alarm_handler(int host_signum)
bellard's avatar
bellard committed
737
#endif
738 739 740 741 742 743 744 745 746 747
{
    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);
    }
}

748 749
#ifndef _WIN32

bellard's avatar
BSD fix  
bellard committed
750 751
#if defined(__linux__)

752 753 754
#define RTC_FREQ 1024

static int rtc_fd;
bellard's avatar
BSD fix  
bellard committed
755

756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775
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
776 777 778 779 780 781 782 783 784 785
#else

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

#endif /* !defined(__linux__) */

#endif /* !defined(_WIN32) */
786

787 788 789 790 791
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
792 793 794
#ifdef _WIN32
    {
        int count=0;
bellard's avatar
bellard committed
795 796 797 798 799
        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
800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816
 	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;
817
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
bellard's avatar
bellard committed
818 819 820 821
        act.sa_flags |= SA_ONSTACK;
#endif
        act.sa_handler = host_alarm_handler;
        sigaction(SIGALRM, &act, NULL);
822

bellard's avatar
bellard committed
823 824 825 826 827 828 829 830
        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);
831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851

        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
852
    }
853 854 855
#endif
}

bellard's avatar
bellard committed
856 857 858 859 860 861 862
void quit_timers(void)
{
#ifdef _WIN32
    timeKillEvent(timerID);
#endif
}

863 864
/***********************************************************/
/* serial device */
865

bellard's avatar
bellard committed
866 867 868 869 870 871 872 873 874
#ifdef _WIN32

int serial_open_device(void)
{
    return -1;
}

#else

875
int serial_open_device(void)
876
{
877 878
    char slave_name[1024];
    int master_fd, slave_fd;
879

880 881 882
    if (serial_console == NULL && nographic) {
        /* use console for serial port */
        return 0;
bellard's avatar
bellard committed
883
    } else {
bellard's avatar
bellard committed
884 885
#if 0
        /* Not satisfying */
886 887 888 889 890 891
        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
892 893 894
#else
        return -1;
#endif
895 896 897
    }
}

bellard's avatar
bellard committed
898 899
#endif

bellard's avatar
bellard committed
900
/***********************************************************/
bellard's avatar
bellard committed
901
/* Linux network device redirectors */
902

bellard's avatar
bellard committed
903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932
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
933

bellard's avatar
bellard committed
934 935
void qemu_add_read_packet(NetDriverState *nd, IOCanRWHandler *fd_can_read, 
                          IOReadHandler *fd_read, void *opaque)
bellard's avatar
bellard committed
936
{
bellard's avatar
bellard committed
937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956
    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
957 958 959
    return 0;
}

bellard's avatar
bellard committed
960 961 962 963 964 965 966 967 968 969 970 971 972 973 974
#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
975
{
bellard's avatar
bellard committed
976 977 978 979 980
#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
981 982
}

bellard's avatar
bellard committed
983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015
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
1016 1017 1018 1019 1020 1021
#ifdef _BSD
static int tun_open(char *ifname, int ifname_size)
{
    int fd;
    char *dev;
    struct stat s;
bellard's avatar
bellard committed
1022

bellard's avatar
bellard committed
1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036
    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
1037
static int tun_open(char *ifname, int ifname_size)
1038
{
bellard's avatar
bellard committed
1039
    struct ifreq ifr;
1040
    int fd, ret;
bellard's avatar
bellard committed
1041 1042 1043 1044 1045
    
    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;
1046
    }
bellard's avatar
bellard committed
1047 1048 1049 1050 1051 1052 1053 1054 1055 1056
    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);
1057
    pstrcpy(ifname, ifname_size, ifr.ifr_name);
bellard's avatar
bellard committed
1058
    fcntl(fd, F_SETFL, O_NONBLOCK);
1059 1060
    return fd;
}
bellard's avatar
bellard committed
1061
#endif
1062

bellard's avatar
bellard committed
1063 1064 1065 1066 1067 1068 1069 1070
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)
1071
{
bellard's avatar
bellard committed
1072 1073 1074 1075 1076 1077 1078
    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];
1079 1080
    char **parg;

bellard's avatar
bellard committed
1081 1082 1083
    nd->fd = tun_open(nd->ifname, sizeof(nd->ifname));
    if (nd->fd < 0)
        return -1;
1084

bellard's avatar
bellard committed
1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100
    /* 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
1101
        }
1102
    }
bellard's avatar
bellard committed
1103 1104
    nd->send_packet = tun_send_packet;
    nd->add_read_packet = tun_add_read_packet;
bellard's avatar
bellard committed
1105
    return 0;
1106 1107
}

bellard's avatar
bellard committed
1108
static int net_fd_init(NetDriverState *nd, int fd)
1109
{
bellard's avatar
bellard committed
1110 1111 1112 1113 1114
    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
1115
}
1116

bellard's avatar
bellard committed
1117
#endif /* !_WIN32 */
bellard's avatar
bellard committed
1118

1119 1120 1121
/***********************************************************/
/* dumb display */

bellard's avatar
bellard committed
1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133
#ifdef _WIN32

static void term_exit(void)
{
}

static void term_init(void)
{
}

#else

1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151
/* 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;
1152 1153 1154 1155
    tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
    /* if graphical mode, we allow Ctrl-C handling */
    if (nographic)
        tty.c_lflag &= ~ISIG;
1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167
    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
1168 1169
#endif

1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192
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;
}

1193
#if !defined(CONFIG_SOFTMMU)
bellard's avatar
bellard committed
1194
/***********************************************************/
1195 1196 1197 1198 1199 1200 1201 1202 1203
/* 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();
}
1204
#endif
1205

1206 1207
/***********************************************************/
/* I/O handling */
1208

1209 1210 1211 1212 1213 1214 1215 1216 1217 1218
#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;
1219
    struct IOHandlerRecord *next;
1220 1221
} IOHandlerRecord;

1222
static IOHandlerRecord *first_io_handler;
1223

1224 1225
int qemu_add_fd_read_handler(int fd, IOCanRWHandler *fd_can_read, 
                             IOReadHandler *fd_read, void *opaque)