vl.c 80.3 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
#ifdef _BSD
#include <sys/stat.h>
43
#ifndef __APPLE__
bellard's avatar
bellard committed
44
#include <libutil.h>
45
#endif
bellard's avatar
bellard committed
46
#else
bellard's avatar
bellard committed
47
48
#include <linux/if.h>
#include <linux/if_tun.h>
bellard's avatar
bellard committed
49
50
#include <pty.h>
#include <malloc.h>
51
#include <linux/rtc.h>
bellard's avatar
bellard committed
52
#endif
bellard's avatar
bellard committed
53
#endif
bellard's avatar
bellard committed
54

bellard's avatar
bellard committed
55
56
57
58
#if defined(CONFIG_SLIRP)
#include "libslirp.h"
#endif

bellard's avatar
bellard committed
59
#ifdef _WIN32
bellard's avatar
bellard committed
60
#include <malloc.h>
bellard's avatar
bellard committed
61
62
63
64
65
66
#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
67
#ifdef CONFIG_SDL
bellard's avatar
bellard committed
68
#ifdef __APPLE__
69
#include <SDL/SDL.h>
bellard's avatar
bellard committed
70
#endif
bellard's avatar
bellard committed
71
#if defined(__linux__)
bellard's avatar
bellard committed
72
73
/* SDL use the pthreads and they modify sigaction. We don't
   want that. */
bellard's avatar
bellard committed
74
#if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2))
bellard's avatar
bellard committed
75
76
77
78
79
80
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
81
#endif /* __linux__ */
bellard's avatar
bellard committed
82
#endif /* CONFIG_SDL */
83
84

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

86
#include "exec-all.h"
87

88
89
//#define DO_TB_FLUSH

90
#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
bellard's avatar
bellard committed
91

92
//#define DEBUG_UNUSED_IOPORT
93
//#define DEBUG_IOPORT
94

95
#if !defined(CONFIG_SOFTMMU)
bellard's avatar
bellard committed
96
#define PHYS_RAM_MAX_SIZE (256 * 1024 * 1024)
97
98
99
#else
#define PHYS_RAM_MAX_SIZE (2047 * 1024 * 1024)
#endif
bellard's avatar
bellard committed
100

bellard's avatar
bellard committed
101
102
103
#ifdef TARGET_PPC
#define DEFAULT_RAM_SIZE 144
#else
104
#define DEFAULT_RAM_SIZE 128
bellard's avatar
bellard committed
105
#endif
106
107
/* in ms */
#define GUI_REFRESH_INTERVAL 30
108

109
110
/* XXX: use a two level table to limit memory usage */
#define MAX_IOPORTS 65536
111

bellard's avatar
bellard committed
112
const char *bios_dir = CONFIG_QEMU_SHAREDIR;
113
char phys_ram_file[1024];
114
115
CPUState *global_env;
CPUState *cpu_single_env;
116
void *ioport_opaque[MAX_IOPORTS];
bellard's avatar
bellard committed
117
118
IOPortReadFunc *ioport_read_table[3][MAX_IOPORTS];
IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS];
119
BlockDriverState *bs_table[MAX_DISKS], *fd_table[MAX_FD];
120
int vga_ram_size;
bellard's avatar
bellard committed
121
int bios_size;
122
static DisplayState display_state;
123
int nographic;
124
int64_t ticks_per_sec;
125
int boot_device = 'c';
bellard's avatar
bellard committed
126
int ram_size;
bellard's avatar
bellard committed
127
128
static char network_script[1024];
int pit_min_timer_count = 0;
129
130
int nb_nics;
NetDriverState nd_table[MAX_NICS];
131
132
QEMUTimer *gui_timer;
int vm_running;
bellard's avatar
bellard committed
133
int audio_enabled = 0;
134
int pci_enabled = 1;
bellard's avatar
bellard committed
135
int prep_enabled = 0;
bellard's avatar
bellard committed
136
int rtc_utc = 1;
137
138
139
int cirrus_vga_enabled = 1;
int graphic_width = 800;
int graphic_height = 600;
140
int graphic_depth = 15;
bellard's avatar
bellard committed
141
TextConsole *vga_console;
142
143

/***********************************************************/
144
145
146
/* x86 ISA bus support */

target_phys_addr_t isa_mem_base = 0;
147

148
uint32_t default_ioport_readb(void *opaque, uint32_t address)
149
150
151
152
{
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "inb: port=0x%04x\n", address);
#endif
bellard's avatar
bellard committed
153
    return 0xff;
154
155
}

156
void default_ioport_writeb(void *opaque, uint32_t address, uint32_t data)
157
158
159
160
161
162
163
{
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "outb: port=0x%04x data=0x%02x\n", address, data);
#endif
}

/* default is to make two byte accesses */
164
uint32_t default_ioport_readw(void *opaque, uint32_t address)
165
166
{
    uint32_t data;
bellard's avatar
bellard committed
167
168
169
    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;
170
171
172
    return data;
}

173
void default_ioport_writew(void *opaque, uint32_t address, uint32_t data)
174
{
bellard's avatar
bellard committed
175
176
177
    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);
178
179
}

180
uint32_t default_ioport_readl(void *opaque, uint32_t address)
181
{
bellard's avatar
bellard committed
182
183
184
185
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "inl: port=0x%04x\n", address);
#endif
    return 0xffffffff;
186
187
}

188
void default_ioport_writel(void *opaque, uint32_t address, uint32_t data)
189
{
bellard's avatar
bellard committed
190
191
192
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "outl: port=0x%04x data=0x%02x\n", address, data);
#endif
193
194
}

bellard's avatar
bellard committed
195
void init_ioports(void)
196
197
198
{
    int i;

bellard's avatar
bellard committed
199
200
201
202
203
204
205
206
    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;
    }
207
208
}

bellard's avatar
bellard committed
209
/* size is the word size in byte */
210
211
int register_ioport_read(int start, int length, int size, 
                         IOPortReadFunc *func, void *opaque)
bellard's avatar
bellard committed
212
{
bellard's avatar
bellard committed
213
    int i, bsize;
bellard's avatar
bellard committed
214

215
    if (size == 1) {
bellard's avatar
bellard committed
216
        bsize = 0;
217
    } else if (size == 2) {
bellard's avatar
bellard committed
218
        bsize = 1;
219
    } else if (size == 4) {
bellard's avatar
bellard committed
220
        bsize = 2;
221
222
    } else {
        hw_error("register_ioport_read: invalid size");
bellard's avatar
bellard committed
223
        return -1;
224
225
    }
    for(i = start; i < start + length; i += size) {
bellard's avatar
bellard committed
226
        ioport_read_table[bsize][i] = func;
227
228
229
230
        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
231
232
233
    return 0;
}

bellard's avatar
bellard committed
234
/* size is the word size in byte */
235
236
int register_ioport_write(int start, int length, int size, 
                          IOPortWriteFunc *func, void *opaque)
bellard's avatar
bellard committed
237
{
bellard's avatar
bellard committed
238
    int i, bsize;
bellard's avatar
bellard committed
239

240
    if (size == 1) {
bellard's avatar
bellard committed
241
        bsize = 0;
242
    } else if (size == 2) {
bellard's avatar
bellard committed
243
        bsize = 1;
244
    } else if (size == 4) {
bellard's avatar
bellard committed
245
        bsize = 2;
246
247
    } else {
        hw_error("register_ioport_write: invalid size");
bellard's avatar
bellard committed
248
        return -1;
249
250
    }
    for(i = start; i < start + length; i += size) {
bellard's avatar
bellard committed
251
        ioport_write_table[bsize][i] = func;
252
253
254
255
        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
256
257
258
    return 0;
}

bellard's avatar
bellard committed
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
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;
    }
}

274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
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
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
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
317
318
319
320
321
322
323
324
325
326
327
328
/* 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;
}

329
330
331
332
/* return the size or -1 if error */
int load_image(const char *filename, uint8_t *addr)
{
    int fd, size;
bellard's avatar
bellard committed
333
    fd = open(filename, O_RDONLY | O_BINARY);
334
335
336
337
338
339
340
341
342
343
344
345
    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;
}

346
void cpu_outb(CPUState *env, int addr, int val)
347
{
348
349
350
351
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "outb: %04x %02x\n", addr, val);
#endif    
352
    ioport_write_table[0][addr](ioport_opaque[addr], addr, val);
353
354
}

355
void cpu_outw(CPUState *env, int addr, int val)
356
{
357
358
359
360
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "outw: %04x %04x\n", addr, val);
#endif    
361
    ioport_write_table[1][addr](ioport_opaque[addr], addr, val);
362
363
}

364
void cpu_outl(CPUState *env, int addr, int val)
365
{
366
367
368
369
#ifdef DEBUG_IOPORT
    if (loglevel & CPU_LOG_IOPORT)
        fprintf(logfile, "outl: %04x %08x\n", addr, val);
#endif
370
    ioport_write_table[2][addr](ioport_opaque[addr], addr, val);
371
372
}

373
int cpu_inb(CPUState *env, int addr)
374
{
375
376
377
378
379
380
381
    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;
382
383
}

384
int cpu_inw(CPUState *env, int addr)
385
{
386
387
388
389
390
391
392
    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;
393
394
}

395
int cpu_inl(CPUState *env, int addr)
396
{
397
398
399
400
401
402
403
    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;
404
405
406
407
408
409
410
411
412
413
414
415
416
}

/***********************************************************/
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);
417
418
#else
    cpu_dump_state(global_env, stderr, 0);
419
420
421
422
423
#endif
    va_end(ap);
    abort();
}

bellard's avatar
bellard committed
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
/***********************************************************/
/* 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);
    }
}

459
460
461
/***********************************************************/
/* timers */

462
463
464
#if defined(__powerpc__)

static inline uint32_t get_tbl(void) 
465
{
466
467
468
    uint32_t tbl;
    asm volatile("mftb %0" : "=r" (tbl));
    return tbl;
469
470
}

471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
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)
493
494
{
    int64_t val;
bellard's avatar
bellard committed
495
    asm volatile ("rdtsc" : "=A" (val));
496
497
498
    return val;
}

bellard's avatar
bellard committed
499
500
501
502
503
504
505
506
507
508
509
510
511
#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;
}

512
513
514
515
516
#else
#error unsupported CPU
#endif

static int64_t cpu_ticks_offset;
517
static int cpu_ticks_enabled;
518

519
static inline int64_t cpu_get_ticks(void)
520
{
521
522
523
524
525
    if (!cpu_ticks_enabled) {
        return cpu_ticks_offset;
    } else {
        return cpu_get_real_ticks() + cpu_ticks_offset;
    }
526
527
528
529
530
}

/* enable cpu_get_ticks() */
void cpu_enable_ticks(void)
{
531
532
533
534
    if (!cpu_ticks_enabled) {
        cpu_ticks_offset -= cpu_get_real_ticks();
        cpu_ticks_enabled = 1;
    }
535
536
537
538
539
540
}

/* disable cpu_get_ticks() : the clock is stopped. You must not call
   cpu_get_ticks() after that.  */
void cpu_disable_ticks(void)
{
541
542
543
544
    if (cpu_ticks_enabled) {
        cpu_ticks_offset = cpu_get_ticks();
        cpu_ticks_enabled = 0;
    }
545
546
}

bellard's avatar
bellard committed
547
static int64_t get_clock(void)
548
{
bellard's avatar
bellard committed
549
550
551
552
553
#ifdef _WIN32
    struct _timeb tb;
    _ftime(&tb);
    return ((int64_t)tb.time * 1000 + (int64_t)tb.millitm) * 1000;
#else
554
555
556
    struct timeval tv;
    gettimeofday(&tv, NULL);
    return tv.tv_sec * 1000000LL + tv.tv_usec;
bellard's avatar
bellard committed
557
#endif
558
559
}

560
561
562
563
564
void cpu_calibrate_ticks(void)
{
    int64_t usec, ticks;

    usec = get_clock();
565
    ticks = cpu_get_real_ticks();
bellard's avatar
bellard committed
566
567
568
#ifdef _WIN32
    Sleep(50);
#else
569
    usleep(50 * 1000);
bellard's avatar
bellard committed
570
#endif
571
    usec = get_clock() - usec;
572
    ticks = cpu_get_real_ticks() - ticks;
573
574
575
    ticks_per_sec = (ticks * 1000000LL + (usec >> 1)) / usec;
}

576
/* compute with 96 bit intermediate result: (a*b)/c */
bellard's avatar
bellard committed
577
uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
{
    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;
}

600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
#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
620
621
622
#ifdef _WIN32
static MMRESULT timerID;
#else
623
624
/* frequency of the times() clock tick */
static int timer_freq;
bellard's avatar
bellard committed
625
#endif
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
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735

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
736
737
738
#ifdef _WIN32
        return GetTickCount();
#else
bellard's avatar
bellard committed
739
740
741
742
743
744
745
746
747
748
749
        {
            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;
            }
750
        }
bellard's avatar
bellard committed
751
#endif
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
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
    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
804
805
806
807
#ifdef _WIN32
void CALLBACK host_alarm_handler(UINT uTimerID, UINT uMsg, 
                                 DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2)
#else
808
static void host_alarm_handler(int host_signum)
bellard's avatar
bellard committed
809
#endif
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
#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
840
841
842
843
844
845
846
847
848
    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);
    }
}

849
850
#ifndef _WIN32

bellard's avatar
BSD fix    
bellard committed
851
852
#if defined(__linux__)

853
854
855
#define RTC_FREQ 1024

static int rtc_fd;
bellard's avatar
BSD fix    
bellard committed
856

857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
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
877
878
879
880
881
882
883
884
885
886
#else

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

#endif /* !defined(__linux__) */

#endif /* !defined(_WIN32) */
887

888
889
890
891
892
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
893
894
895
#ifdef _WIN32
    {
        int count=0;
bellard's avatar
bellard committed
896
897
898
899
900
        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
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
 	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;
918
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
bellard's avatar
bellard committed
919
920
921
922
        act.sa_flags |= SA_ONSTACK;
#endif
        act.sa_handler = host_alarm_handler;
        sigaction(SIGALRM, &act, NULL);
923

bellard's avatar
bellard committed
924
925
926
927
928
929
930
931
        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);
932

933
#if defined(__linux__)
934
935
936
937
938
939
940
941
942
943
944
945
        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
946
            sigaction(SIGIO, &act, NULL);
947
948
            fcntl(rtc_fd, F_SETFL, O_ASYNC);
            fcntl(rtc_fd, F_SETOWN, getpid());
949
950
951
        } else 
#endif /* defined(__linux__) */
        {
952
953
954
955
        use_itimer:
            pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * 
                                   PIT_FREQ) / 1000000;
        }
bellard's avatar
bellard committed
956
    }
957
958
959
#endif
}

bellard's avatar
bellard committed
960
961
962
963
964
965
966
void quit_timers(void)
{
#ifdef _WIN32
    timeKillEvent(timerID);
#endif
}

967
/***********************************************************/
bellard's avatar
bellard committed
968
/* character device */
969

bellard's avatar
bellard committed
970
971
972
973
int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len)
{
    return s->chr_write(s, buf, len);
}
bellard's avatar
bellard committed
974

bellard's avatar
bellard committed
975
void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
bellard's avatar
bellard committed
976
{
bellard's avatar
bellard committed
977
978
979
980
981
982
    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
983
984
}

bellard's avatar
bellard committed
985
986
987
988
989
990
991
992
993
994
995
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
996

bellard's avatar
bellard committed
997
static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
998
{
bellard's avatar
bellard committed
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
    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;
}

#ifndef _WIN32

typedef struct {
    int fd_in, fd_out;
    /* for nographic stdio only */
    IOCanRWHandler *fd_can_read; 
    IOReadHandler *fd_read;
    void *fd_opaque;
} FDCharDriver;

#define STDIO_MAX_CLIENTS 2

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

static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
{
    FDCharDriver *s = chr->opaque;
    return write(s->fd_out, buf, len);
}

static void fd_chr_add_read_handler(CharDriverState *chr, 
                                    IOCanRWHandler *fd_can_read, 
                                    IOReadHandler *fd_read, void *opaque)
{
    FDCharDriver *s = chr->opaque;

    if (nographic && s->fd_in == 0) {
        s->fd_can_read = fd_can_read;
        s->fd_read = fd_read;
        s->fd_opaque = opaque;
bellard's avatar
bellard committed
1051
    } else {
bellard's avatar
bellard committed
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
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
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
        qemu_add_fd_read_handler(s->fd_in, fd_can_read, fd_read, opaque);
    }
}

/* open a character device to a unix fd */
CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
{
    CharDriverState *chr;
    FDCharDriver *s;

    chr = qemu_mallocz(sizeof(CharDriverState));
    if (!chr)
        return NULL;
    s = qemu_mallocz(sizeof(FDCharDriver));
    if (!s) {
        free(chr);
        return NULL;
    }
    s->fd_in = fd_in;
    s->fd_out = fd_out;
    chr->opaque = s;
    chr->chr_write = fd_chr_write;
    chr->chr_add_read_handler = fd_chr_add_read_handler;
    return chr;
}

/* for STDIO, we handle the case where several clients use it
   (nographic mode) */

#define TERM_ESCAPE 0x01 /* ctrl-a is used for escape */

static int term_got_escape, client_index;

void term_print_help(void)
{
    printf("\n"
           "C-a h    print this help\n"
           "C-a x    exit emulator\n"
           "C-a s    save disk data back to file (if -snapshot)\n"
           "C-a b    send break (magic sysrq)\n"
           "C-a c    switch between console and monitor\n"
           "C-a C-a  send C-a\n"
           );
}

/* called when a char is received */
static void stdio_received_byte(int ch)
{
    if (term_got_escape) {
        term_got_escape = 0;
        switch(ch) {
        case 'h':
            term_print_help();
            break;
        case 'x':
            exit(0);
            break;
        case 's': 
            {
                int i;
                for (i = 0; i < MAX_DISKS; i++) {
                    if (bs_table[i])
                        bdrv_commit(bs_table[i]);
                }
            }
            break;
        case 'b':
            if (client_index < stdio_nb_clients) {
                CharDriverState *chr;
                FDCharDriver *s;

                chr = stdio_clients[client_index];
                s = chr->opaque;
                chr->chr_event(s->fd_opaque, CHR_EVENT_BREAK);
            }
            break;
        case 'c':
            client_index++;
            if (client_index >= stdio_nb_clients)
                client_index = 0;
            if (client_index == 0) {
                /* send a new line in the monitor to get the prompt */
                ch = '\r';
                goto send_char;
            }
            break;
        case TERM_ESCAPE:
            goto send_char;
        }
    } else if (ch == TERM_ESCAPE) {
        term_got_escape = 1;
    } else {
    send_char:
        if (client_index < stdio_nb_clients) {
            uint8_t buf[1];
            CharDriverState *chr;
            FDCharDriver *s;
            
            chr = stdio_clients[client_index];
            s = chr->opaque;
            buf[0] = ch;
            /* XXX: should queue the char if the device is not
               ready */
            if (s->fd_can_read(s->fd_opaque) > 0) 
                s->fd_read(s->fd_opaque, buf, 1);
1157
        }
1158
1159
1160
    }
}

bellard's avatar
bellard committed
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
static int stdio_can_read(void *opaque)
{
    /* XXX: not strictly correct */
    return 1;
}

static void stdio_read(void *opaque, const uint8_t *buf, int size)
{
    int i;
    for(i = 0; i < size; i++)
        stdio_received_byte(buf[i]);
}

CharDriverState *qemu_chr_open_stdio(void)
{
    CharDriverState *chr;

    if (nographic) {
        if (stdio_nb_clients >= STDIO_MAX_CLIENTS)
            return NULL;
        chr = qemu_chr_open_fd(0, 1);
        if (stdio_nb_clients == 0)
            qemu_add_fd_read_handler(0, stdio_can_read, stdio_read, NULL);
        client_index = stdio_nb_clients;
    } else {
        if (stdio_nb_clients != 0)
            return NULL;
        chr = qemu_chr_open_fd(0, 1);
    }
    stdio_clients[stdio_nb_clients++] = chr;
    return chr;
}

#if defined(__linux__)
CharDriverState *qemu_chr_open_pty(void)
{
    char slave_name[1024];
    int master_fd, slave_fd;
    
    /* Not satisfying */
    if (openpty(&master_fd, &slave_fd, slave_name, NULL, NULL) < 0) {
        return NULL;
    }
    fprintf(stderr, "char device redirected to %s\n", slave_name);
    return qemu_chr_open_fd(master_fd, master_fd);
}
#else
CharDriverState *qemu_chr_open_pty(void)
{
    return NULL;
}
bellard's avatar
bellard committed
1212
1213
#endif

bellard's avatar
bellard committed
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
#endif /* !defined(_WIN32) */

CharDriverState *qemu_chr_open(const char *filename)
{
    if (!strcmp(filename, "vc")) {
        return text_console_init(&display_state);
    } else if (!strcmp(filename, "null")) {
        return qemu_chr_open_null();
    } else 
#ifndef _WIN32
    if (!strcmp(filename, "pty")) {
        return qemu_chr_open_pty();
    } else if (!strcmp(filename, "stdio")) {
        return qemu_chr_open_stdio();
    } else 
#endif
    {
        return NULL;
    }
}

bellard's avatar
bellard committed
1235
/***********************************************************/
bellard's avatar
bellard committed
1236
/* Linux network device redirectors */
1237

bellard's avatar
bellard committed
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
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
1268

bellard's avatar
bellard committed
1269
1270
void qemu_add_read_packet(NetDriverState *nd, IOCanRWHandler *fd_can_read, 
                          IOReadHandler *fd_read, void *opaque)
bellard's avatar
bellard committed
1271
{
bellard's avatar
bellard committed
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
    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
1292
1293
1294
    return 0;
}

bellard's avatar
bellard committed
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
#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
1310
{
bellard's avatar
bellard committed
1311
1312
1313
1314
1315
#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
1316
1317
}

bellard's avatar
bellard committed
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
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
1351
1352
1353
1354
1355
1356
#ifdef _BSD
static int tun_open(char *ifname, int ifname_size)
{
    int fd;
    char *dev;
    struct stat s;
bellard's avatar
bellard committed
1357

bellard's avatar
bellard committed
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
    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
1372
static int tun_open(char *ifname, int ifname_size)
1373
{
bellard's avatar
bellard committed
1374
    struct ifreq ifr;
1375
    int fd, ret;
bellard's avatar
bellard committed
1376
1377
1378
1379
1380
    
    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;
1381
    }
bellard's avatar
bellard committed
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
    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);
1392
    pstrcpy(ifname, ifname_size, ifr.ifr_name);
bellard's avatar
bellard committed
1393
    fcntl(fd, F_SETFL, O_NONBLOCK);
1394
1395
    return fd;
}
bellard's avatar
bellard committed
1396
#endif
1397

bellard's avatar
bellard committed
1398
1399
1400
1401
1402
1403
1404
1405
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)
1406
{
bellard's avatar
bellard committed
1407
1408
1409
1410
1411
1412
1413
    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];
1414
1415
    char **parg;

bellard's avatar
bellard committed
1416
1417
1418
    nd->fd = tun_open(nd->ifname, sizeof(nd->ifname));
    if (nd->fd < 0)
        return -1;
1419

bellard's avatar
bellard committed
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
    /* 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
1436
        }
1437
    }
bellard's avatar
bellard committed
1438
1439
    nd->send_packet = tun_send_packet;
    nd->add_read_packet = tun_add_read_packet;
bellard's avatar
bellard committed
1440
    return 0;
1441
1442
}

bellard's avatar
bellard committed
1443
static int net_fd_init(NetDriverState *nd, int fd)
1444
{
bellard's avatar
bellard committed
1445
1446
1447
1448
1449
    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
1450
}
1451

bellard's avatar
bellard committed
1452
#endif /* !_WIN32 */
bellard's avatar
bellard committed
1453

1454
1455
1456
/***********************************************************/
/* dumb display */

bellard's avatar
bellard committed
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
#ifdef _WIN32

static void term_exit(void)
{
}

static void term_init(void)
{
}

#else

1469
1470
/* init terminal so that we can grab keys */
static struct termios oldtty;
1471
static int old_fd0_flags;
1472
1473
1474
1475

static void term_exit(void)
{
    tcsetattr (0, TCSANOW, &oldtty);
1476
    fcntl(0, F_SETFL, old_fd0_flags);
1477
1478
1479
1480
1481
1482
1483
1484
}

static void term_init(void)
{
    struct termios tty;

    tcgetattr (0, &tty);
    oldtty = tty;
1485
    old_fd0_flags = fcntl(0, F_GETFL);
1486
1487
1488
1489

    tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
                          |INLCR|IGNCR|ICRNL|IXON);
    tty.c_oflag |= OPOST;
1490
1491
1492
1493
    tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
    /* if graphical mode, we allow Ctrl-C handling */
    if (nographic)
        tty.c_lflag &= ~ISIG;