vl.c 132 KB
Newer Older
1
/*
bellard's avatar
bellard committed
2
 * QEMU System Emulator
3
 * 
4
 * Copyright (c) 2003-2005 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
#include <netinet/in.h>
bellard's avatar
bellard committed
42
#include <dirent.h>
bellard's avatar
bellard committed
43
#include <netdb.h>
bellard's avatar
bellard committed
44 45
#ifdef _BSD
#include <sys/stat.h>
46
#ifndef __APPLE__
bellard's avatar
bellard committed
47
#include <libutil.h>
48
#endif
bellard's avatar
bellard committed
49
#else
bellard's avatar
bellard committed
50 51
#include <linux/if.h>
#include <linux/if_tun.h>
bellard's avatar
bellard committed
52 53
#include <pty.h>
#include <malloc.h>
54
#include <linux/rtc.h>
bellard's avatar
bellard committed
55
#include <linux/ppdev.h>
bellard's avatar
bellard committed
56
#endif
bellard's avatar
bellard committed
57
#endif
bellard's avatar
bellard committed
58

bellard's avatar
bellard committed
59 60 61 62
#if defined(CONFIG_SLIRP)
#include "libslirp.h"
#endif

bellard's avatar
bellard committed
63
#ifdef _WIN32
bellard's avatar
bellard committed
64
#include <malloc.h>
bellard's avatar
bellard committed
65 66
#include <sys/timeb.h>
#include <windows.h>
bellard's avatar
bellard committed
67 68
#include <winsock2.h>
#include <ws2tcpip.h>
bellard's avatar
bellard committed
69 70 71 72
#define getopt_long_only getopt_long
#define memalign(align, size) malloc(size)
#endif

bellard's avatar
bellard committed
73
#ifdef CONFIG_SDL
bellard's avatar
bellard committed
74
#ifdef __APPLE__
75
#include <SDL/SDL.h>
bellard's avatar
bellard committed
76
#endif
bellard's avatar
bellard committed
77
#endif /* CONFIG_SDL */
78

79 80 81 82 83
#ifdef CONFIG_COCOA
#undef main
#define main qemu_main
#endif /* CONFIG_COCOA */

84
#include "disas.h"
bellard's avatar
bellard committed
85

86
#include "exec-all.h"
87

88
#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
bellard's avatar
bellard committed
89

90
//#define DEBUG_UNUSED_IOPORT
91
//#define DEBUG_IOPORT
92

93
#if !defined(CONFIG_SOFTMMU)
bellard's avatar
bellard committed
94
#define PHYS_RAM_MAX_SIZE (256 * 1024 * 1024)
95 96 97
#else
#define PHYS_RAM_MAX_SIZE (2047 * 1024 * 1024)
#endif
bellard's avatar
bellard committed
98

bellard's avatar
bellard committed
99 100 101
#ifdef TARGET_PPC
#define DEFAULT_RAM_SIZE 144
#else
102
#define DEFAULT_RAM_SIZE 128
bellard's avatar
bellard committed
103
#endif
104 105
/* in ms */
#define GUI_REFRESH_INTERVAL 30
106

107 108
/* XXX: use a two level table to limit memory usage */
#define MAX_IOPORTS 65536
109

bellard's avatar
bellard committed
110
const char *bios_dir = CONFIG_QEMU_SHAREDIR;
111
char phys_ram_file[1024];
112
void *ioport_opaque[MAX_IOPORTS];
bellard's avatar
bellard committed
113 114
IOPortReadFunc *ioport_read_table[3][MAX_IOPORTS];
IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS];
115
BlockDriverState *bs_table[MAX_DISKS], *fd_table[MAX_FD];
116
int vga_ram_size;
bellard's avatar
bellard committed
117
int bios_size;
118
static DisplayState display_state;
119
int nographic;
120
const char* keyboard_layout = NULL;
121
int64_t ticks_per_sec;
122
int boot_device = 'c';
bellard's avatar
bellard committed
123
int ram_size;
bellard's avatar
bellard committed
124
int pit_min_timer_count = 0;
125
int nb_nics;
bellard's avatar
bellard committed
126
NICInfo nd_table[MAX_NICS];
127 128
QEMUTimer *gui_timer;
int vm_running;
bellard's avatar
bellard committed
129
int rtc_utc = 1;
130
int cirrus_vga_enabled = 1;
131 132 133 134
#ifdef TARGET_SPARC
int graphic_width = 1024;
int graphic_height = 768;
#else
135 136
int graphic_width = 800;
int graphic_height = 600;
137
#endif
138
int graphic_depth = 15;
bellard's avatar
bellard committed
139
int full_screen = 0;
bellard's avatar
bellard committed
140
TextConsole *vga_console;
141
CharDriverState *serial_hds[MAX_SERIAL_PORTS];
142
CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
143 144 145
#ifdef TARGET_I386
int win2k_install_hack = 0;
#endif
bellard's avatar
bellard committed
146
int usb_enabled = 0;
bellard's avatar
bellard committed
147 148
USBPort *vm_usb_ports[MAX_VM_USB_PORTS];
USBDevice *vm_usb_hub;
bellard's avatar
bellard committed
149
static VLANState *first_vlan;
bellard's avatar
bellard committed
150
int smp_cpus = 1;
bellard's avatar
bellard committed
151
#if defined(TARGET_SPARC)
152
#define MAX_CPUS 16
bellard's avatar
bellard committed
153 154
#elif defined(TARGET_I386)
#define MAX_CPUS 255
155
#else
bellard's avatar
bellard committed
156
#define MAX_CPUS 1
157
#endif
158 159

/***********************************************************/
160 161 162
/* x86 ISA bus support */

target_phys_addr_t isa_mem_base = 0;
bellard's avatar
bellard committed
163
PicState2 *isa_pic;
164

165
uint32_t default_ioport_readb(void *opaque, uint32_t address)
166 167 168 169
{
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "inb: port=0x%04x\n", address);
#endif
bellard's avatar
bellard committed
170
    return 0xff;
171 172
}

173
void default_ioport_writeb(void *opaque, uint32_t address, uint32_t data)
174 175 176 177 178 179 180
{
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "outb: port=0x%04x data=0x%02x\n", address, data);
#endif
}

/* default is to make two byte accesses */
181
uint32_t default_ioport_readw(void *opaque, uint32_t address)
182 183
{
    uint32_t data;
bellard's avatar
bellard committed
184 185 186
    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;
187 188 189
    return data;
}

190
void default_ioport_writew(void *opaque, uint32_t address, uint32_t data)
191
{
bellard's avatar
bellard committed
192 193 194
    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);
195 196
}

197
uint32_t default_ioport_readl(void *opaque, uint32_t address)
198
{
bellard's avatar
bellard committed
199 200 201 202
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "inl: port=0x%04x\n", address);
#endif
    return 0xffffffff;
203 204
}

205
void default_ioport_writel(void *opaque, uint32_t address, uint32_t data)
206
{
bellard's avatar
bellard committed
207 208 209
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "outl: port=0x%04x data=0x%02x\n", address, data);
#endif
210 211
}

bellard's avatar
bellard committed
212
void init_ioports(void)
213 214 215
{
    int i;

bellard's avatar
bellard committed
216 217 218 219 220 221 222 223
    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;
    }
224 225
}

bellard's avatar
bellard committed
226
/* size is the word size in byte */
227 228
int register_ioport_read(int start, int length, int size, 
                         IOPortReadFunc *func, void *opaque)
bellard's avatar
bellard committed
229
{
bellard's avatar
bellard committed
230
    int i, bsize;
bellard's avatar
bellard committed
231

232
    if (size == 1) {
bellard's avatar
bellard committed
233
        bsize = 0;
234
    } else if (size == 2) {
bellard's avatar
bellard committed
235
        bsize = 1;
236
    } else if (size == 4) {
bellard's avatar
bellard committed
237
        bsize = 2;
238 239
    } else {
        hw_error("register_ioport_read: invalid size");
bellard's avatar
bellard committed
240
        return -1;
241 242
    }
    for(i = start; i < start + length; i += size) {
bellard's avatar
bellard committed
243
        ioport_read_table[bsize][i] = func;
244 245 246 247
        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
248 249 250
    return 0;
}

bellard's avatar
bellard committed
251
/* size is the word size in byte */
252 253
int register_ioport_write(int start, int length, int size, 
                          IOPortWriteFunc *func, void *opaque)
bellard's avatar
bellard committed
254
{
bellard's avatar
bellard committed
255
    int i, bsize;
bellard's avatar
bellard committed
256

257
    if (size == 1) {
bellard's avatar
bellard committed
258
        bsize = 0;
259
    } else if (size == 2) {
bellard's avatar
bellard committed
260
        bsize = 1;
261
    } else if (size == 4) {
bellard's avatar
bellard committed
262
        bsize = 2;
263 264
    } else {
        hw_error("register_ioport_write: invalid size");
bellard's avatar
bellard committed
265
        return -1;
266 267
    }
    for(i = start; i < start + length; i += size) {
bellard's avatar
bellard committed
268
        ioport_write_table[bsize][i] = func;
269 270 271 272
        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
273 274 275
    return 0;
}

bellard's avatar
bellard committed
276 277 278 279 280 281 282 283 284 285 286 287 288 289 290
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;
    }
}

bellard's avatar
bellard committed
291 292
/***********************************************************/

293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319
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
320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335
int strstart(const char *str, const char *val, const char **ptr)
{
    const char *p, *q;
    p = str;
    q = val;
    while (*q != '\0') {
        if (*p != *q)
            return 0;
        p++;
        q++;
    }
    if (ptr)
        *ptr = p;
    return 1;
}

bellard's avatar
bellard committed
336 337 338 339 340 341 342 343 344 345 346 347
/* 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;
}

348 349 350 351
/* return the size or -1 if error */
int load_image(const char *filename, uint8_t *addr)
{
    int fd, size;
bellard's avatar
bellard committed
352
    fd = open(filename, O_RDONLY | O_BINARY);
353 354 355 356 357 358 359 360 361 362 363 364
    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;
}

365
void cpu_outb(CPUState *env, int addr, int val)
366
{
367 368 369 370
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "outb: %04x %02x\n", addr, val);
#endif    
371
    ioport_write_table[0][addr](ioport_opaque[addr], addr, val);
372 373
}

374
void cpu_outw(CPUState *env, int addr, int val)
375
{
376 377 378 379
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "outw: %04x %04x\n", addr, val);
#endif    
380
    ioport_write_table[1][addr](ioport_opaque[addr], addr, val);
381 382
}

383
void cpu_outl(CPUState *env, int addr, int val)
384
{
385 386 387 388
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "outl: %04x %08x\n", addr, val);
#endif
389
    ioport_write_table[2][addr](ioport_opaque[addr], addr, val);
390 391
}

392
int cpu_inb(CPUState *env, int addr)
393
{
394 395 396 397 398 399 400
    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;
401 402
}

403
int cpu_inw(CPUState *env, int addr)
404
{
405 406 407 408 409 410 411
    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;
412 413
}

414
int cpu_inl(CPUState *env, int addr)
415
{
416 417 418 419 420 421 422
    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;
423 424 425 426 427 428
}

/***********************************************************/
void hw_error(const char *fmt, ...)
{
    va_list ap;
bellard's avatar
bellard committed
429
    CPUState *env;
430 431 432 433 434

    va_start(ap, fmt);
    fprintf(stderr, "qemu: hardware error: ");
    vfprintf(stderr, fmt, ap);
    fprintf(stderr, "\n");
bellard's avatar
bellard committed
435 436
    for(env = first_cpu; env != NULL; env = env->next_cpu) {
        fprintf(stderr, "CPU #%d:\n", env->cpu_index);
437
#ifdef TARGET_I386
bellard's avatar
bellard committed
438
        cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU);
439
#else
bellard's avatar
bellard committed
440
        cpu_dump_state(env, stderr, fprintf, 0);
441
#endif
bellard's avatar
bellard committed
442
    }
443 444 445 446
    va_end(ap);
    abort();
}

bellard's avatar
bellard committed
447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481
/***********************************************************/
/* 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);
    }
}

482 483 484
/***********************************************************/
/* timers */

485 486 487
#if defined(__powerpc__)

static inline uint32_t get_tbl(void) 
488
{
489 490 491
    uint32_t tbl;
    asm volatile("mftb %0" : "=r" (tbl));
    return tbl;
492 493
}

494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515
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)
516 517
{
    int64_t val;
bellard's avatar
bellard committed
518
    asm volatile ("rdtsc" : "=A" (val));
519 520 521
    return val;
}

bellard's avatar
bellard committed
522 523 524 525 526 527 528 529 530 531 532 533 534
#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;
}

bellard's avatar
bellard committed
535 536 537 538 539 540 541 542 543
#elif defined(__ia64)

int64_t cpu_get_real_ticks(void)
{
	int64_t val;
	asm volatile ("mov %0 = ar.itc" : "=r"(val) :: "memory");
	return val;
}

bellard's avatar
bellard committed
544 545 546 547 548 549 550 551 552
#elif defined(__s390__)

int64_t cpu_get_real_ticks(void)
{
    int64_t val;
    asm volatile("stck 0(%1)" : "=m" (val) : "a" (&val) : "cc");
    return val;
}

553 554 555 556 557
#else
#error unsupported CPU
#endif

static int64_t cpu_ticks_offset;
558
static int cpu_ticks_enabled;
559

560
static inline int64_t cpu_get_ticks(void)
561
{
562 563 564 565 566
    if (!cpu_ticks_enabled) {
        return cpu_ticks_offset;
    } else {
        return cpu_get_real_ticks() + cpu_ticks_offset;
    }
567 568 569 570 571
}

/* enable cpu_get_ticks() */
void cpu_enable_ticks(void)
{
572 573 574 575
    if (!cpu_ticks_enabled) {
        cpu_ticks_offset -= cpu_get_real_ticks();
        cpu_ticks_enabled = 1;
    }
576 577 578 579 580 581
}

/* disable cpu_get_ticks() : the clock is stopped. You must not call
   cpu_get_ticks() after that.  */
void cpu_disable_ticks(void)
{
582 583 584 585
    if (cpu_ticks_enabled) {
        cpu_ticks_offset = cpu_get_ticks();
        cpu_ticks_enabled = 0;
    }
586 587
}

bellard's avatar
bellard committed
588
static int64_t get_clock(void)
589
{
bellard's avatar
bellard committed
590 591 592 593 594
#ifdef _WIN32
    struct _timeb tb;
    _ftime(&tb);
    return ((int64_t)tb.time * 1000 + (int64_t)tb.millitm) * 1000;
#else
595 596 597
    struct timeval tv;
    gettimeofday(&tv, NULL);
    return tv.tv_sec * 1000000LL + tv.tv_usec;
bellard's avatar
bellard committed
598
#endif
599 600
}

601 602 603 604 605
void cpu_calibrate_ticks(void)
{
    int64_t usec, ticks;

    usec = get_clock();
606
    ticks = cpu_get_real_ticks();
bellard's avatar
bellard committed
607 608 609
#ifdef _WIN32
    Sleep(50);
#else
610
    usleep(50 * 1000);
bellard's avatar
bellard committed
611
#endif
612
    usec = get_clock() - usec;
613
    ticks = cpu_get_real_ticks() - ticks;
614 615 616
    ticks_per_sec = (ticks * 1000000LL + (usec >> 1)) / usec;
}

617
/* compute with 96 bit intermediate result: (a*b)/c */
bellard's avatar
bellard committed
618
uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640
{
    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;
}

641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660
#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
661 662 663
#ifdef _WIN32
static MMRESULT timerID;
#else
664 665
/* frequency of the times() clock tick */
static int timer_freq;
bellard's avatar
bellard committed
666
#endif
667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761

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;
762
        if (!ts || ts->expire_time > current_time)
763 764 765 766 767 768 769 770 771 772 773 774 775 776
            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
777 778 779
#ifdef _WIN32
        return GetTickCount();
#else
bellard's avatar
bellard committed
780 781 782 783 784 785 786 787 788 789 790
        {
            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;
            }
791
        }
bellard's avatar
bellard committed
792
#endif
793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844
    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
845 846 847 848
#ifdef _WIN32
void CALLBACK host_alarm_handler(UINT uTimerID, UINT uMsg, 
                                 DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2)
#else
849
static void host_alarm_handler(int host_signum)
bellard's avatar
bellard committed
850
#endif
851
{
852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880
#if 0
#define DISP_FREQ 1000
    {
        static int64_t delta_min = INT64_MAX;
        static int64_t delta_max, delta_cum, last_clock, delta, ti;
        static int count;
        ti = qemu_get_clock(vm_clock);
        if (last_clock != 0) {
            delta = ti - last_clock;
            if (delta < delta_min)
                delta_min = delta;
            if (delta > delta_max)
                delta_max = delta;
            delta_cum += delta;
            if (++count == DISP_FREQ) {
                printf("timer: min=%lld us max=%lld us avg=%lld us avg_freq=%0.3f Hz\n",
                       muldiv64(delta_min, 1000000, ticks_per_sec),
                       muldiv64(delta_max, 1000000, ticks_per_sec),
                       muldiv64(delta_cum, 1000000 / DISP_FREQ, ticks_per_sec),
                       (double)ticks_per_sec / ((double)delta_cum / DISP_FREQ));
                count = 0;
                delta_min = INT64_MAX;
                delta_max = 0;
                delta_cum = 0;
            }
        }
        last_clock = ti;
    }
#endif
881 882 883 884
    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))) {
bellard's avatar
bellard committed
885 886 887 888
        CPUState *env = cpu_single_env;
        if (env) {
            /* stop the currently executing cpu because a timer occured */
            cpu_interrupt(env, CPU_INTERRUPT_EXIT);
889
#ifdef USE_KQEMU
bellard's avatar
bellard committed
890 891 892
            if (env->kqemu_enabled) {
                kqemu_cpu_interrupt(env);
            }
893
#endif
bellard's avatar
bellard committed
894
        }
895 896 897
    }
}

898 899
#ifndef _WIN32

bellard's avatar
BSD fix  
bellard committed
900 901
#if defined(__linux__)

902 903 904
#define RTC_FREQ 1024

static int rtc_fd;
bellard's avatar
BSD fix  
bellard committed
905

906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925
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
926 927 928 929 930 931 932 933 934 935
#else

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

#endif /* !defined(__linux__) */

#endif /* !defined(_WIN32) */
936

937 938 939 940 941
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
942 943 944
#ifdef _WIN32
    {
        int count=0;
945
        timerID = timeSetEvent(1,     // interval (ms)
bellard's avatar
bellard committed
946 947 948 949
                               0,     // resolution
                               host_alarm_handler, // function
                               (DWORD)&count,  // user parameter
                               TIME_PERIODIC | TIME_CALLBACK_FUNCTION);
bellard's avatar
bellard committed
950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965
 	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);
966
       act.sa_flags = 0;
967
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
bellard's avatar
bellard committed
968 969 970 971
        act.sa_flags |= SA_ONSTACK;
#endif
        act.sa_handler = host_alarm_handler;
        sigaction(SIGALRM, &act, NULL);
972

bellard's avatar
bellard committed
973
        itv.it_interval.tv_sec = 0;
bellard's avatar
bellard committed
974
        itv.it_interval.tv_usec = 999; /* for i386 kernel 2.6 to get 1 ms */
bellard's avatar
bellard committed
975 976 977 978 979 980
        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);
981

982
#if defined(__linux__)
983 984 985 986 987 988 989 990 991 992 993 994
        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 */
bellard's avatar
bellard committed
995
            sigaction(SIGIO, &act, NULL);
996 997
            fcntl(rtc_fd, F_SETFL, O_ASYNC);
            fcntl(rtc_fd, F_SETOWN, getpid());
998 999 1000
        } else 
#endif /* defined(__linux__) */
        {
1001 1002 1003 1004
        use_itimer:
            pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * 
                                   PIT_FREQ) / 1000000;
        }
bellard's avatar
bellard committed
1005
    }
1006 1007 1008
#endif
}

bellard's avatar
bellard committed
1009 1010 1011 1012 1013 1014 1015
void quit_timers(void)
{
#ifdef _WIN32
    timeKillEvent(timerID);
#endif
}

1016
/***********************************************************/
bellard's avatar
bellard committed
1017
/* character device */
1018

bellard's avatar
bellard committed
1019 1020 1021 1022
int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len)
{
    return s->chr_write(s, buf, len);
}
bellard's avatar
bellard committed
1023

bellard's avatar
bellard committed
1024
int qemu_chr_ioctl(CharDriverState *s, int cmd, void *arg)
bellard's avatar
bellard committed
1025
{
bellard's avatar
bellard committed
1026 1027 1028
    if (!s->chr_ioctl)
        return -ENOTSUP;
    return s->chr_ioctl(s, cmd, arg);
bellard's avatar
bellard committed
1029 1030
}

bellard's avatar
bellard committed
1031
void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
bellard's avatar
bellard committed
1032
{
bellard's avatar
bellard committed
1033 1034 1035 1036 1037 1038
    char buf[4096];
    va_list ap;
    va_start(ap, fmt);
    vsnprintf(buf, sizeof(buf), fmt, ap);
    qemu_chr_write(s, buf, strlen(buf));
    va_end(ap);
bellard's avatar
bellard committed
1039 1040
}

bellard's avatar
bellard committed
1041 1042 1043 1044 1045 1046
void qemu_chr_send_event(CharDriverState *s, int event)
{
    if (s->chr_send_event)
        s->chr_send_event(s, event);
}

bellard's avatar
bellard committed
1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057
void qemu_chr_add_read_handler(CharDriverState *s, 
                               IOCanRWHandler *fd_can_read, 
                               IOReadHandler *fd_read, void *opaque)
{
    s->chr_add_read_handler(s, fd_can_read, fd_read, opaque);
}
             
void qemu_chr_add_event_handler(CharDriverState *s, IOEventHandler *chr_event)
{
    s->chr_event = chr_event;
}
bellard's avatar
bellard committed
1058

bellard's avatar
bellard committed
1059
static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1060
{
bellard's avatar
bellard committed
1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081
    return len;
}

static void null_chr_add_read_handler(CharDriverState *chr, 
                                    IOCanRWHandler *fd_can_read, 
                                    IOReadHandler *fd_read, void *opaque)
{
}

CharDriverState *qemu_chr_open_null(void)
{
    CharDriverState *chr;

    chr = qemu_mallocz(sizeof(CharDriverState));
    if (!chr)
        return NULL;
    chr->chr_write = null_chr_write;
    chr->chr_add_read_handler = null_chr_add_read_handler;
    return chr;
}

bellard's avatar
bellard committed
1082
#ifdef _WIN32
bellard's avatar
bellard committed
1083

bellard's avatar
bellard committed
1084 1085 1086 1087 1088
#define socket_error() WSAGetLastError()
#undef EINTR
#define EWOULDBLOCK WSAEWOULDBLOCK
#define EINTR       WSAEINTR
#define EINPROGRESS WSAEINPROGRESS
bellard's avatar
bellard committed
1089

bellard's avatar
bellard committed
1090 1091 1092 1093
static void socket_cleanup(void)
{
    WSACleanup();
}
bellard's avatar
bellard committed
1094

bellard's avatar
bellard committed
1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142
static int socket_init(void)
{
    WSADATA Data;
    int ret, err;

    ret = WSAStartup(MAKEWORD(2,2), &Data);
    if (ret != 0) {
        err = WSAGetLastError();
        fprintf(stderr, "WSAStartup: %d\n", err);
        return -1;
    }
    atexit(socket_cleanup);
    return 0;
}

static int send_all(int fd, const uint8_t *buf, int len1)
{
    int ret, len;
    
    len = len1;
    while (len > 0) {
        ret = send(fd, buf, len, 0);
        if (ret < 0) {
            int errno;
            errno = WSAGetLastError();
            if (errno != WSAEWOULDBLOCK) {
                return -1;
            }
        } else if (ret == 0) {
            break;
        } else {
            buf += ret;
            len -= ret;
        }
    }
    return len1 - len;
}

void socket_set_nonblock(int fd)
{
    unsigned long opt = 1;
    ioctlsocket(fd, FIONBIO, &opt);
}

#else

#define socket_error() errno
#define closesocket(s) close(s)
bellard's avatar
bellard committed
1143

bellard's avatar
bellard committed
1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163
static int unix_write(int fd, const uint8_t *buf, int len1)
{
    int ret, len;

    len = len1;
    while (len > 0) {
        ret = write(fd, buf, len);
        if (ret < 0) {
            if (errno != EINTR && errno != EAGAIN)
                return -1;
        } else if (ret == 0) {
            break;
        } else {
            buf += ret;
            len -= ret;
        }
    }
    return len1 - len;
}

bellard's avatar
bellard committed
1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189
static inline int send_all(int fd, const uint8_t *buf, int len1)
{
    return unix_write(fd, buf, len1);
}

void socket_set_nonblock(int fd)
{
    fcntl(fd, F_SETFL, O_NONBLOCK);
}
#endif /* !_WIN32 */

#ifndef _WIN32

typedef struct {
    int fd_in, fd_out;
    IOCanRWHandler *fd_can_read; 
    IOReadHandler *fd_read;
    void *fd_opaque;
    int max_size;
} FDCharDriver;

#define STDIO_MAX_CLIENTS 2

static int stdio_nb_clients;
static CharDriverState *stdio_clients[STDIO_MAX_CLIENTS];

bellard's avatar
bellard committed
1190 1191 1192
static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
{
    FDCharDriver *s = chr->opaque;
bellard's avatar
bellard committed
1193
    return unix_write(s->fd_out, buf, len);
bellard's avatar
bellard committed
1194 1195
}