vl.c 86.2 KB
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/*
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 * QEMU System Emulator
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 * 
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 * Copyright (c) 2003-2004 Fabrice Bellard
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 * 
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 * 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.
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 */
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#include "vl.h"

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#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <time.h>
#include <errno.h>
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#include <sys/time.h>

#ifndef _WIN32
#include <sys/times.h>
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#include <sys/wait.h>
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#include <termios.h>
#include <sys/poll.h>
#include <sys/mman.h>
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#include <sys/ioctl.h>
#include <sys/socket.h>
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#include <netinet/in.h>
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#include <dirent.h>
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#ifdef _BSD
#include <sys/stat.h>
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#ifndef __APPLE__
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#include <libutil.h>
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#endif
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#else
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#include <linux/if.h>
#include <linux/if_tun.h>
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#include <pty.h>
#include <malloc.h>
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#include <linux/rtc.h>
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#endif
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#endif
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#if defined(CONFIG_SLIRP)
#include "libslirp.h"
#endif

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#ifdef _WIN32
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#include <malloc.h>
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#include <sys/timeb.h>
#include <windows.h>
#define getopt_long_only getopt_long
#define memalign(align, size) malloc(size)
#endif

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#ifdef CONFIG_SDL
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#ifdef __APPLE__
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#include <SDL/SDL.h>
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#endif
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#endif /* CONFIG_SDL */
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#include "disas.h"
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#include "exec-all.h"
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//#define DO_TB_FLUSH

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#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
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//#define DEBUG_UNUSED_IOPORT
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//#define DEBUG_IOPORT
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#if !defined(CONFIG_SOFTMMU)
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#define PHYS_RAM_MAX_SIZE (256 * 1024 * 1024)
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#else
#define PHYS_RAM_MAX_SIZE (2047 * 1024 * 1024)
#endif
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#ifdef TARGET_PPC
#define DEFAULT_RAM_SIZE 144
#else
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#define DEFAULT_RAM_SIZE 128
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#endif
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/* in ms */
#define GUI_REFRESH_INTERVAL 30
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/* XXX: use a two level table to limit memory usage */
#define MAX_IOPORTS 65536
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const char *bios_dir = CONFIG_QEMU_SHAREDIR;
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char phys_ram_file[1024];
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CPUState *global_env;
CPUState *cpu_single_env;
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void *ioport_opaque[MAX_IOPORTS];
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IOPortReadFunc *ioport_read_table[3][MAX_IOPORTS];
IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS];
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BlockDriverState *bs_table[MAX_DISKS], *fd_table[MAX_FD];
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int vga_ram_size;
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int bios_size;
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static DisplayState display_state;
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int nographic;
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int64_t ticks_per_sec;
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int boot_device = 'c';
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int ram_size;
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static char network_script[1024];
int pit_min_timer_count = 0;
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int nb_nics;
NetDriverState nd_table[MAX_NICS];
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QEMUTimer *gui_timer;
int vm_running;
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int audio_enabled = 0;
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int pci_enabled = 1;
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int prep_enabled = 0;
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int rtc_utc = 1;
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int cirrus_vga_enabled = 1;
int graphic_width = 800;
int graphic_height = 600;
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int graphic_depth = 15;
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TextConsole *vga_console;
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CharDriverState *serial_hds[MAX_SERIAL_PORTS];
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/***********************************************************/
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/* x86 ISA bus support */

target_phys_addr_t isa_mem_base = 0;
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uint32_t default_ioport_readb(void *opaque, uint32_t address)
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{
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "inb: port=0x%04x\n", address);
#endif
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    return 0xff;
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}

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void default_ioport_writeb(void *opaque, uint32_t address, uint32_t data)
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{
#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "outb: port=0x%04x data=0x%02x\n", address, data);
#endif
}

/* default is to make two byte accesses */
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uint32_t default_ioport_readw(void *opaque, uint32_t address)
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{
    uint32_t data;
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    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;
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    return data;
}

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void default_ioport_writew(void *opaque, uint32_t address, uint32_t data)
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{
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    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);
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}

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uint32_t default_ioport_readl(void *opaque, uint32_t address)
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{
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#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "inl: port=0x%04x\n", address);
#endif
    return 0xffffffff;
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}

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void default_ioport_writel(void *opaque, uint32_t address, uint32_t data)
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{
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#ifdef DEBUG_UNUSED_IOPORT
    fprintf(stderr, "outl: port=0x%04x data=0x%02x\n", address, data);
#endif
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}

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void init_ioports(void)
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{
    int i;

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    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;
    }
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}

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/* size is the word size in byte */
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int register_ioport_read(int start, int length, int size, 
                         IOPortReadFunc *func, void *opaque)
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{
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    int i, bsize;
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    if (size == 1) {
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        bsize = 0;
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    } else if (size == 2) {
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        bsize = 1;
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    } else if (size == 4) {
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        bsize = 2;
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    } else {
        hw_error("register_ioport_read: invalid size");
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        return -1;
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    }
    for(i = start; i < start + length; i += size) {
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        ioport_read_table[bsize][i] = func;
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        if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque)
            hw_error("register_ioport_read: invalid opaque");
        ioport_opaque[i] = opaque;
    }
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    return 0;
}

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/* size is the word size in byte */
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int register_ioport_write(int start, int length, int size, 
                          IOPortWriteFunc *func, void *opaque)
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{
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    int i, bsize;
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    if (size == 1) {
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        bsize = 0;
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    } else if (size == 2) {
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        bsize = 1;
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    } else if (size == 4) {
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        bsize = 2;
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    } else {
        hw_error("register_ioport_write: invalid size");
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        return -1;
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    }
    for(i = start; i < start + length; i += size) {
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        ioport_write_table[bsize][i] = func;
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        if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque)
            hw_error("register_ioport_read: invalid opaque");
        ioport_opaque[i] = opaque;
    }
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    return 0;
}

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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;
    }
}

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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;
}

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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;
}

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/* 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;
}

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/* return the size or -1 if error */
int load_image(const char *filename, uint8_t *addr)
{
    int fd, size;
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    fd = open(filename, O_RDONLY | O_BINARY);
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    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;
}

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

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

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

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int cpu_inb(CPUState *env, int addr)
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{
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    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;
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}

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int cpu_inw(CPUState *env, int addr)
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{
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    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;
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}

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int cpu_inl(CPUState *env, int addr)
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{
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    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;
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}

/***********************************************************/
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);
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#else
    cpu_dump_state(global_env, stderr, 0);
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#endif
    va_end(ap);
    abort();
}

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/***********************************************************/
/* 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);
    }
}

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/***********************************************************/
/* timers */

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#if defined(__powerpc__)

static inline uint32_t get_tbl(void) 
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{
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    uint32_t tbl;
    asm volatile("mftb %0" : "=r" (tbl));
    return tbl;
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}

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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)
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{
    int64_t val;
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    asm volatile ("rdtsc" : "=A" (val));
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    return val;
}

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#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;
}

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#else
#error unsupported CPU
#endif

static int64_t cpu_ticks_offset;
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static int cpu_ticks_enabled;
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static inline int64_t cpu_get_ticks(void)
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{
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    if (!cpu_ticks_enabled) {
        return cpu_ticks_offset;
    } else {
        return cpu_get_real_ticks() + cpu_ticks_offset;
    }
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}

/* enable cpu_get_ticks() */
void cpu_enable_ticks(void)
{
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    if (!cpu_ticks_enabled) {
        cpu_ticks_offset -= cpu_get_real_ticks();
        cpu_ticks_enabled = 1;
    }
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}

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

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static int64_t get_clock(void)
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{
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#ifdef _WIN32
    struct _timeb tb;
    _ftime(&tb);
    return ((int64_t)tb.time * 1000 + (int64_t)tb.millitm) * 1000;
#else
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    struct timeval tv;
    gettimeofday(&tv, NULL);
    return tv.tv_sec * 1000000LL + tv.tv_usec;
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#endif
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}

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void cpu_calibrate_ticks(void)
{
    int64_t usec, ticks;

    usec = get_clock();
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    ticks = cpu_get_real_ticks();
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#ifdef _WIN32
    Sleep(50);
#else
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    usleep(50 * 1000);
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#endif
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    usec = get_clock() - usec;
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    ticks = cpu_get_real_ticks() - ticks;
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    ticks_per_sec = (ticks * 1000000LL + (usec >> 1)) / usec;
}

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/* compute with 96 bit intermediate result: (a*b)/c */
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uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
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{
    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;
}

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#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];
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#ifdef _WIN32
static MMRESULT timerID;
#else
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/* frequency of the times() clock tick */
static int timer_freq;
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#endif
618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727

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:
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#ifdef _WIN32
        return GetTickCount();
#else
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        {
            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;
            }
742
        }
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#endif
744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795
    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;
}

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#ifdef _WIN32
void CALLBACK host_alarm_handler(UINT uTimerID, UINT uMsg, 
                                 DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2)
#else
800
static void host_alarm_handler(int host_signum)
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#endif
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{
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
#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
832 833 834 835 836 837 838 839 840
    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);
    }
}

841 842
#ifndef _WIN32

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#if defined(__linux__)

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#define RTC_FREQ 1024

static int rtc_fd;
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849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868
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;
}

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#else

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

#endif /* !defined(__linux__) */

#endif /* !defined(_WIN32) */
879

880 881 882 883 884
static void init_timers(void)
{
    rt_clock = qemu_new_clock(QEMU_TIMER_REALTIME);
    vm_clock = qemu_new_clock(QEMU_TIMER_VIRTUAL);

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#ifdef _WIN32
    {
        int count=0;
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        timerID = timeSetEvent(10,    // interval (ms)
                               0,     // resolution
                               host_alarm_handler, // function
                               (DWORD)&count,  // user parameter
                               TIME_PERIODIC | TIME_CALLBACK_FUNCTION);
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 	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;
910
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
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        act.sa_flags |= SA_ONSTACK;
#endif
        act.sa_handler = host_alarm_handler;
        sigaction(SIGALRM, &act, NULL);
915

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        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);
924

925
#if defined(__linux__)
926 927 928 929 930 931 932 933 934 935 936 937
        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 */
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            sigaction(SIGIO, &act, NULL);
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            fcntl(rtc_fd, F_SETFL, O_ASYNC);
            fcntl(rtc_fd, F_SETOWN, getpid());
941 942 943
        } else 
#endif /* defined(__linux__) */
        {
944 945 946 947
        use_itimer:
            pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * 
                                   PIT_FREQ) / 1000000;
        }
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    }
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#endif
}

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void quit_timers(void)
{
#ifdef _WIN32
    timeKillEvent(timerID);
#endif
}

959
/***********************************************************/
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/* character device */
961

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int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len)
{
    return s->chr_write(s, buf, len);
}
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void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
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{
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    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);
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}

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void qemu_chr_send_event(CharDriverState *s, int event)
{
    if (s->chr_send_event)
        s->chr_send_event(s, event);
}

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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;
}
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static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
996
{
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    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;
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    } else {
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        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);
1155
        }
1156 1157 1158
    }
}

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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]);
}

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
/* init terminal so that we can grab keys */
static struct termios oldtty;
static int old_fd0_flags;

static void term_exit(void)
{
    tcsetattr (0, TCSANOW, &oldtty);
    fcntl(0, F_SETFL, old_fd0_flags);
}

static void term_init(void)
{
    struct termios tty;

    tcgetattr (0, &tty);
    oldtty = tty;
    old_fd0_flags = fcntl(0, F_GETFL);

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

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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;
1226 1227 1228 1229
    if (stdio_nb_clients == 1) {
        /* set the terminal in raw mode */
        term_init();
    }
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    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;
}
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#endif

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#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;
    }
}

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/***********************************************************/
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/* Linux network device redirectors */
1276

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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);
}
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void qemu_add_read_packet(NetDriverState *nd, IOCanRWHandler *fd_can_read, 
                          IOReadHandler *fd_read, void *opaque)
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{
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    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");
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    return 0;
}

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#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)
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{
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#if 0
    printf("output:\n");
    hex_dump(stdout, pkt, pkt_len);
#endif
    slirp_fd_read(slirp_fd_opaque, pkt, pkt_len);
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}

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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;
}

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static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
{
    const char *p, *p1;
    int len;
    p = *pp;
    p1 = strchr(p, sep);
    if (!p1)
        return -1;
    len = p1 - p;
    p1++;
    if (buf_size > 0) {
        if (len > buf_size - 1)
            len = buf_size - 1;
        memcpy(buf, p, len);
        buf[len] = '\0';
    }
    *pp = p1;
    return 0;
}

static void net_slirp_redir(const char *redir_str)
{
    int is_udp;
    char buf[256], *r;
    const char *p;
    struct in_addr guest_addr;
    int host_port, guest_port;
    
    if (!slirp_inited) {
        slirp_inited = 1;
        slirp_init();
    }

    p = redir_str;
    if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
        goto fail;
    if (!strcmp(buf, "tcp")) {
        is_udp = 0;
    } else if (!strcmp(buf, "udp")) {
        is_udp = 1;
    } else {
        goto fail;
    }

    if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
        goto fail;
    host_port = strtol(buf, &r, 0);
    if (r == buf)
        goto fail;

    if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
        goto fail;
    if (buf[0] == '\0') {
        pstrcpy(buf, sizeof(buf), "10.0.2.15");
    }
    if (!inet_aton(buf, &guest_addr))
        goto fail;
    
    guest_port = strtol(p, &r, 0);
    if (r == p)
        goto fail;
    
    if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) {
        fprintf(stderr, "qemu: could not set up redirection\n");
        exit(1);
    }
    return;
 fail:
    fprintf(stderr, "qemu: syntax: -redir [tcp|udp]:host-port:[guest-host]:guest-port\n");
    exit(1);
}
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#ifndef _WIN32

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char smb_dir[1024];

static void smb_exit(void)
{
    DIR *d;
    struct dirent *de;
    char filename[1024];

    /* erase all the files in the directory */
    d = opendir(smb_dir);
    for(;;) {
        de = readdir(d);
        if (!de)
            break;
        if (strcmp(de->d_name, ".") != 0 &&
            strcmp(de->d_name, "..") != 0) {
            snprintf(filename, sizeof(filename), "%s/%s", 
                     smb_dir, de->d_name);
            unlink(filename);
        }
    }
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    closedir(d);
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    rmdir(smb_dir);
}

/* automatic user mode samba server configuration */
void net_slirp_smb(const char *exported_dir)
{
    char smb_conf[1024];
    char smb_cmdline[1024];
    FILE *f;

    if (!slirp_inited) {
        slirp_inited = 1;
        slirp_init();
    }

    /* XXX: better tmp dir construction */
    snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%d", getpid());
    if (mkdir(smb_dir, 0700) < 0) {
        fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
        exit(1);
    }
    snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
    
    f = fopen(smb_conf, "w");
    if (!f) {
        fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
        exit(1);
    }
    fprintf(f, 
            "[global]\n"
            "pid directory=%s\n"
            "lock directory=%s\n"
            "log file=%s/log.smbd\n"
            "smb passwd file=%s/smbpasswd\n"
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            "security = share\n"
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            "[qemu]\n"
            "path=%s\n"
            "read only=no\n"
            "guest ok=yes\n",
            smb_dir,
            smb_dir,
            smb_dir,
            smb_dir,
            exported_dir
            );
    fclose(f);
    atexit(smb_exit);

    snprintf(smb_cmdline, sizeof(smb_cmdline), "/usr/sbin/smbd -s %s",
             smb_conf);
    
    slirp_add_exec(0, smb_cmdline, 4, 139);
}
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#endif /* !defined(_WIN32) */

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#endif /* CONFIG_SLIRP */

#if !defined(_WIN32)
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#ifdef _BSD
static int tun_open(char *ifname, int ifname_size)
{
    int fd;
    char *dev;
    struct stat s;
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    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
1563
static int tun_open(char *ifname, int ifname_size)
1564
{
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    struct ifreq ifr;
1566
    int fd, ret;
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    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;
1572
    }
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    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);
1583
    pstrcpy(ifname, ifname_size, ifr.ifr_name);
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    fcntl(fd, F_SETFL, O_NONBLOCK);
1585 1586
    return fd;
}
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#endif
1588

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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)
1597
{
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    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];
1605 1606
    char **parg;

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    nd->fd = tun_open(nd->ifname, sizeof(nd->ifname));
    if (nd->fd < 0)
        return -1;
1610

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    /* 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);
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        }
1628
    }
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    nd->send_packet = tun_send_packet;
    nd->add_read_packet = tun_add_read_packet;
B
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    return 0;
1632 1633
}

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static int net_fd_init(NetDriverState *nd, int fd)
1635
{
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1636 1637 1638 1639 1640
    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;
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}
1642

B
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#endif /* !_WIN32 */
B
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1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670
/***********************************************************/
/* dumb display */

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;
}

1671
#if !defined(CONFIG_SOFTMMU)
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/***********************************************************/
1673 1674 1675 1676 1677 1678
/* 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;
1679 1680
    if (stdio_nb_clients > 0)
        term_exit();
1681 1682
    abort();
}
1683
#endif
1684

1685 1686
/***********************************************************/
/* I/O handling */
1687

1688 1689 1690 1691 1692 1693 1694 1695 1696 1697
#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;
1698
    struct IOHandlerRecord *next;
1699 1700
} IOHandlerRecord;

1701
static IOHandlerRecord *first_io_handler;
1702

1703 1704
int qemu_add_fd_read_handler(int fd, IOCanRWHandler *fd_can_read, 
                             IOReadHandler *fd_read, void *opaque)
1705 1706 1707
{
    IOHandlerRecord *ioh;

1708 1709
    ioh = qemu_mallocz(sizeof(IOHandlerRecord));
    if (!ioh)
1710 1711 1712 1713 1714
        return -1;
    ioh->fd = fd;
    ioh->fd_can_read = fd_can_read;
    ioh->fd_read = fd_read;
    ioh->opaque = opaque;
1715 1716
    ioh->next = first_io_handler;
    first_io_handler = ioh;
1717 1718 1719
    return 0;
}

1720 1721 1722
void qemu_del_fd_read_handler(int fd)
{
    IOHandlerRecord **pioh, *ioh;
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1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740
    pioh = &first_io_handler;
    for(;;) {
        ioh = *pioh;
        if (ioh == NULL)
            break;
        if (ioh->fd == fd) {
            *pioh = ioh->next;
            break;
        }
        pioh = &ioh->next;
    }
}

/***********************************************************/
/* savevm/loadvm support */

void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size)
B
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1741
{
1742
    fwrite(buf, 1, size, f);
B
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1743 1744
}

1745
void qemu_put_byte(QEMUFile *f, int v)
B
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1746
{
1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831
    fputc(v, f);
}

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

void qemu_put_be32(QEMUFile *f, unsigned int v)
{
    qemu_put_byte(f, v >> 24);
    qemu_put_byte(f, v >> 16);
    qemu_put_byte(f, v >> 8);
    qemu_put_byte(f, v);
}

void qemu_put_be64(QEMUFile *f, uint64_t v)
{
    qemu_put_be32(f, v >> 32);
    qemu_put_be32(f, v);
}

int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size)
{
    return fread(buf, 1, size, f);
}

int qemu_get_byte(QEMUFile *f)
{
    int v;
    v = fgetc(f);
    if (v == EOF)
        return 0;
    else
        return v;
}

unsigned int qemu_get_be16(QEMUFile *f)
{
    unsigned int v;
    v = qemu_get_byte(f) << 8;
    v |= qemu_get_byte(f);
    return v;
}

unsigned int qemu_get_be32(QEMUFile *f)
{
    unsigned int v;
    v = qemu_get_byte(f) << 24;
    v |= qemu_get_byte(f) << 16;
    v |= qemu_get_byte(f) << 8;
    v |= qemu_get_byte(f);
    return v;
}

uint64_t qemu_get_be64(QEMUFile *f)
{
    uint64_t v;
    v = (uint64_t)qemu_get_be32(f) << 32;
    v |= qemu_get_be32(f);
    return v;
}

int64_t qemu_ftell(QEMUFile *f)
{
    return ftell(f);
}

int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence)
{
    if (fseek(f, pos, whence) < 0)
        return -1;
    return ftell(f);
}

typedef struct SaveStateEntry {
    char idstr[256];
    int instance_id;
    int version_id;
    SaveStateHandler *save_state;
    LoadStateHandler *load_state;
    void *opaque;
    struct SaveStateEntry *next;
} SaveStateEntry;
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1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878
static SaveStateEntry *first_se;

int register_savevm(const char *idstr, 
                    int instance_id, 
                    int version_id,
                    SaveStateHandler *save_state,
                    LoadStateHandler *load_state,
                    void *opaque)
{
    SaveStateEntry *se, **pse;

    se = qemu_malloc(sizeof(SaveStateEntry));
    if (!se)
        return -1;
    pstrcpy(se->idstr, sizeof(se->idstr), idstr);
    se->instance_id = instance_id;
    se->version_id = version_id;
    se->save_state = save_state;
    se->load_state = load_state;
    se->opaque = opaque;
    se->next = NULL;

    /* add at the end of list */
    pse = &first_se;
    while (*pse != NULL)
        pse = &(*pse)->next;
    *pse = se;
    return 0;
}

#define QEMU_VM_FILE_MAGIC   0x5145564d
#define QEMU_VM_FILE_VERSION 0x00000001

int qemu_savevm(const char *filename)
{
    SaveStateEntry *se;
    QEMUFile *f;
    int len, len_pos, cur_pos, saved_vm_running, ret;

    saved_vm_running = vm_running;
    vm_stop(0);

    f = fopen(filename, "wb");
    if (!f) {
        ret = -1;
        goto the_end;
1879 1880
    }

1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954
    qemu_put_be32(f, QEMU_VM_FILE_MAGIC);
    qemu_put_be32(f, QEMU_VM_FILE_VERSION);

    for(se = first_se; se != NULL; se = se->next) {
        /* ID string */
        len = strlen(se->idstr);
        qemu_put_byte(f, len);
        qemu_put_buffer(f, se->idstr, len);

        qemu_put_be32(f, se->instance_id);
        qemu_put_be32(f, se->version_id);

        /* record size: filled later */
        len_pos = ftell(f);
        qemu_put_be32(f, 0);
        
        se->save_state(f, se->opaque);

        /* fill record size */
        cur_pos = ftell(f);
        len = ftell(f) - len_pos - 4;
        fseek(f, len_pos, SEEK_SET);
        qemu_put_be32(f, len);
        fseek(f, cur_pos, SEEK_SET);
    }

    fclose(f);
    ret = 0;
 the_end:
    if (saved_vm_running)
        vm_start();
    return ret;
}

static SaveStateEntry *find_se(const char *idstr, int instance_id)
{
    SaveStateEntry *se;

    for(se = first_se; se != NULL; se = se->next) {
        if (!strcmp(se->idstr, idstr) && 
            instance_id == se->instance_id)
            return se;
    }
    return NULL;
}

int qemu_loadvm(const char *filename)
{
    SaveStateEntry *se;
    QEMUFile *f;
    int len, cur_pos, ret, instance_id, record_len, version_id;
    int saved_vm_running;
    unsigned int v;
    char idstr[256];
    
    saved_vm_running = vm_running;
    vm_stop(0);

    f = fopen(filename, "rb");
    if (!f) {
        ret = -1;
        goto the_end;
    }

    v = qemu_get_be32(f);
    if (v != QEMU_VM_FILE_MAGIC)
        goto fail;
    v = qemu_get_be32(f);
    if (v != QEMU_VM_FILE_VERSION) {
    fail:
        fclose(f);
        ret = -1;
        goto the_end;
    }
B
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1955
    for(;;) {
1956
#if defined (DO_TB_FLUSH)
1957
        tb_flush(global_env);
1958
#endif
1959 1960
        len = qemu_get_byte(f);
        if (feof(f))
1961
            break;
1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981
        qemu_get_buffer(f, idstr, len);
        idstr[len] = '\0';
        instance_id = qemu_get_be32(f);
        version_id = qemu_get_be32(f);
        record_len = qemu_get_be32(f);
#if 0
        printf("idstr=%s instance=0x%x version=%d len=%d\n", 
               idstr, instance_id, version_id, record_len);
#endif
        cur_pos = ftell(f);
        se = find_se(idstr, instance_id);
        if (!se) {
            fprintf(stderr, "qemu: warning: instance 0x%x of device '%s' not present in current VM\n", 
                    instance_id, idstr);
        } else {
            ret = se->load_state(f, se->opaque, version_id);
            if (ret < 0) {
                fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", 
                        instance_id, idstr);
            }
1982
        }
1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
        /* always seek to exact end of record */
        qemu_fseek(f, cur_pos + record_len, SEEK_SET);
    }
    fclose(f);
    ret = 0;
 the_end:
    if (saved_vm_running)
        vm_start();
    return ret;
}

/***********************************************************/
/* cpu save/restore */

#if defined(TARGET_I386)

static void cpu_put_seg(QEMUFile *f, SegmentCache *dt)
{
2001
    qemu_put_be32(f, dt->selector);
2002 2003 2004 2005 2006 2007 2008
    qemu_put_be32(f, (uint32_t)dt->base);
    qemu_put_be32(f, dt->limit);
    qemu_put_be32(f, dt->flags);
}

static void cpu_get_seg(QEMUFile *f, SegmentCache *dt)
{
2009
    dt->selector = qemu_get_be32(f);
2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082
    dt->base = (uint8_t *)qemu_get_be32(f);
    dt->limit = qemu_get_be32(f);
    dt->flags = qemu_get_be32(f);
}

void cpu_save(QEMUFile *f, void *opaque)
{
    CPUState *env = opaque;
    uint16_t fptag, fpus, fpuc;
    uint32_t hflags;
    int i;

    for(i = 0; i < 8; i++)
        qemu_put_be32s(f, &env->regs[i]);
    qemu_put_be32s(f, &env->eip);
    qemu_put_be32s(f, &env->eflags);
    qemu_put_be32s(f, &env->eflags);
    hflags = env->hflags; /* XXX: suppress most of the redundant hflags */
    qemu_put_be32s(f, &hflags);
    
    /* FPU */
    fpuc = env->fpuc;
    fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
    fptag = 0;
    for (i=7; i>=0; i--) {
	fptag <<= 2;
	if (env->fptags[i]) {
            fptag |= 3;
        }
    }
    
    qemu_put_be16s(f, &fpuc);
    qemu_put_be16s(f, &fpus);
    qemu_put_be16s(f, &fptag);

    for(i = 0; i < 8; i++) {
        uint64_t mant;
        uint16_t exp;
        cpu_get_fp80(&mant, &exp, env->fpregs[i]);
        qemu_put_be64(f, mant);
        qemu_put_be16(f, exp);
    }

    for(i = 0; i < 6; i++)
        cpu_put_seg(f, &env->segs[i]);
    cpu_put_seg(f, &env->ldt);
    cpu_put_seg(f, &env->tr);
    cpu_put_seg(f, &env->gdt);
    cpu_put_seg(f, &env->idt);
    
    qemu_put_be32s(f, &env->sysenter_cs);
    qemu_put_be32s(f, &env->sysenter_esp);
    qemu_put_be32s(f, &env->sysenter_eip);
    
    qemu_put_be32s(f, &env->cr[0]);
    qemu_put_be32s(f, &env->cr[2]);
    qemu_put_be32s(f, &env->cr[3]);
    qemu_put_be32s(f, &env->cr[4]);
    
    for(i = 0; i < 8; i++)
        qemu_put_be32s(f, &env->dr[i]);

    /* MMU */
    qemu_put_be32s(f, &env->a20_mask);
}

int cpu_load(QEMUFile *f, void *opaque, int version_id)
{
    CPUState *env = opaque;
    int i;
    uint32_t hflags;
    uint16_t fpus, fpuc, fptag;

2083
    if (version_id != 2)
2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139
        return -EINVAL;
    for(i = 0; i < 8; i++)
        qemu_get_be32s(f, &env->regs[i]);
    qemu_get_be32s(f, &env->eip);
    qemu_get_be32s(f, &env->eflags);
    qemu_get_be32s(f, &env->eflags);
    qemu_get_be32s(f, &hflags);

    qemu_get_be16s(f, &fpuc);
    qemu_get_be16s(f, &fpus);
    qemu_get_be16s(f, &fptag);

    for(i = 0; i < 8; i++) {
        uint64_t mant;
        uint16_t exp;
        mant = qemu_get_be64(f);
        exp = qemu_get_be16(f);
        env->fpregs[i] = cpu_set_fp80(mant, exp);
    }

    env->fpuc = fpuc;
    env->fpstt = (fpus >> 11) & 7;
    env->fpus = fpus & ~0x3800;
    for(i = 0; i < 8; i++) {
        env->fptags[i] = ((fptag & 3) == 3);
        fptag >>= 2;
    }
    
    for(i = 0; i < 6; i++)
        cpu_get_seg(f, &env->segs[i]);
    cpu_get_seg(f, &env->ldt);
    cpu_get_seg(f, &env->tr);
    cpu_get_seg(f, &env->gdt);
    cpu_get_seg(f, &env->idt);
    
    qemu_get_be32s(f, &env->sysenter_cs);
    qemu_get_be32s(f, &env->sysenter_esp);
    qemu_get_be32s(f, &env->sysenter_eip);
    
    qemu_get_be32s(f, &env->cr[0]);
    qemu_get_be32s(f, &env->cr[2]);
    qemu_get_be32s(f, &env->cr[3]);
    qemu_get_be32s(f, &env->cr[4]);
    
    for(i = 0; i < 8; i++)
        qemu_get_be32s(f, &env->dr[i]);

    /* MMU */
    qemu_get_be32s(f, &env->a20_mask);

    /* XXX: compute hflags from scratch, except for CPL and IIF */
    env->hflags = hflags;
    tlb_flush(env, 1);
    return 0;
}

2140 2141 2142 2143 2144 2145 2146 2147 2148
#elif defined(TARGET_PPC)
void cpu_save(QEMUFile *f, void *opaque)
{
}

int cpu_load(QEMUFile *f, void *opaque, int version_id)
{
    return 0;
}
2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262
#else

#warning No CPU save/restore functions

#endif

/***********************************************************/
/* ram save/restore */

/* we just avoid storing empty pages */
static void ram_put_page(QEMUFile *f, const uint8_t *buf, int len)
{
    int i, v;

    v = buf[0];
    for(i = 1; i < len; i++) {
        if (buf[i] != v)
            goto normal_save;
    }
    qemu_put_byte(f, 1);
    qemu_put_byte(f, v);
    return;
 normal_save:
    qemu_put_byte(f, 0); 
    qemu_put_buffer(f, buf, len);
}

static int ram_get_page(QEMUFile *f, uint8_t *buf, int len)
{
    int v;

    v = qemu_get_byte(f);
    switch(v) {
    case 0:
        if (qemu_get_buffer(f, buf, len) != len)
            return -EIO;
        break;
    case 1:
        v = qemu_get_byte(f);
        memset(buf, v, len);
        break;
    default:
        return -EINVAL;
    }
    return 0;
}

static void ram_save(QEMUFile *f, void *opaque)
{
    int i;
    qemu_put_be32(f, phys_ram_size);
    for(i = 0; i < phys_ram_size; i+= TARGET_PAGE_SIZE) {
        ram_put_page(f, phys_ram_base + i, TARGET_PAGE_SIZE);
    }
}

static int ram_load(QEMUFile *f, void *opaque, int version_id)
{
    int i, ret;

    if (version_id != 1)
        return -EINVAL;
    if (qemu_get_be32(f) != phys_ram_size)
        return -EINVAL;
    for(i = 0; i < phys_ram_size; i+= TARGET_PAGE_SIZE) {
        ret = ram_get_page(f, phys_ram_base + i, TARGET_PAGE_SIZE);
        if (ret)
            return ret;
    }
    return 0;
}

/***********************************************************/
/* main execution loop */

void gui_update(void *opaque)
{
    display_state.dpy_refresh(&display_state);
    qemu_mod_timer(gui_timer, GUI_REFRESH_INTERVAL + qemu_get_clock(rt_clock));
}

/* XXX: support several handlers */
VMStopHandler *vm_stop_cb;
VMStopHandler *vm_stop_opaque;

int qemu_add_vm_stop_handler(VMStopHandler *cb, void *opaque)
{
    vm_stop_cb = cb;
    vm_stop_opaque = opaque;
    return 0;
}

void qemu_del_vm_stop_handler(VMStopHandler *cb, void *opaque)
{
    vm_stop_cb = NULL;
}

void vm_start(void)
{
    if (!vm_running) {
        cpu_enable_ticks();
        vm_running = 1;
    }
}

void vm_stop(int reason) 
{
    if (vm_running) {
        cpu_disable_ticks();
        vm_running = 0;
        if (reason != 0) {
            if (vm_stop_cb) {
                vm_stop_cb(vm_stop_opaque, reason);
            }
2263
        }
2264 2265 2266
    }
}

2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322
/* reset/shutdown handler */

typedef struct QEMUResetEntry {
    QEMUResetHandler *func;
    void *opaque;
    struct QEMUResetEntry *next;
} QEMUResetEntry;

static QEMUResetEntry *first_reset_entry;
static int reset_requested;
static int shutdown_requested;

void qemu_register_reset(QEMUResetHandler *func, void *opaque)
{
    QEMUResetEntry **pre, *re;

    pre = &first_reset_entry;
    while (*pre != NULL)
        pre = &(*pre)->next;
    re = qemu_mallocz(sizeof(QEMUResetEntry));
    re->func = func;
    re->opaque = opaque;
    re->next = NULL;
    *pre = re;
}

void qemu_system_reset(void)
{
    QEMUResetEntry *re;

    /* reset all devices */
    for(re = first_reset_entry; re != NULL; re = re->next) {
        re->func(re->opaque);
    }
}

void qemu_system_reset_request(void)
{
    reset_requested = 1;
    cpu_interrupt(cpu_single_env, CPU_INTERRUPT_EXIT);
}

void qemu_system_shutdown_request(void)
{
    shutdown_requested = 1;
    cpu_interrupt(cpu_single_env, CPU_INTERRUPT_EXIT);
}

static void main_cpu_reset(void *opaque)
{
#ifdef TARGET_I386
    CPUState *env = opaque;
    cpu_reset(env);
#endif
}

B
bellard 已提交
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void main_loop_wait(int timeout)
2324
{
B
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2325
#ifndef _WIN32
2326 2327
    struct pollfd ufds[MAX_IO_HANDLERS + 1], *pf;
    IOHandlerRecord *ioh, *ioh_next;
B
bellard 已提交
2328 2329 2330
    uint8_t buf[4096];
    int n, max_size;
#endif
B
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2331
    int ret;
2332

B
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2333 2334 2335 2336
#ifdef _WIN32
        if (timeout > 0)
            Sleep(timeout);
#else
B
bellard 已提交
2337
        /* poll any events */
2338
        /* XXX: separate device handlers from system ones */
B
bellard 已提交
2339
        pf = ufds;
2340 2341 2342
        for(ioh = first_io_handler; ioh != NULL; ioh = ioh->next) {
            if (!ioh->fd_can_read) {
                max_size = 0;
2343 2344 2345 2346 2347
                pf->fd = ioh->fd;
                pf->events = POLLIN;
                ioh->ufd = pf;
                pf++;
            } else {
2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358
                max_size = ioh->fd_can_read(ioh->opaque);
                if (max_size > 0) {
                    if (max_size > sizeof(buf))
                        max_size = sizeof(buf);
                    pf->fd = ioh->fd;
                    pf->events = POLLIN;
                    ioh->ufd = pf;
                    pf++;
                } else {
                    ioh->ufd = NULL;
                }
2359 2360
            }
            ioh->max_size = max_size;
B
bellard 已提交
2361
        }
B
bellard 已提交
2362
        
B
bellard 已提交
2363 2364
        ret = poll(ufds, pf - ufds, timeout);
        if (ret > 0) {
2365 2366 2367
            /* XXX: better handling of removal */
            for(ioh = first_io_handler; ioh != NULL; ioh = ioh_next) {
                ioh_next = ioh->next;
2368 2369
                pf = ioh->ufd;
                if (pf) {
2370 2371 2372 2373 2374 2375 2376 2377
                    if (pf->revents & POLLIN) {
                        if (ioh->max_size == 0) {
                            /* just a read event */
                            ioh->fd_read(ioh->opaque, NULL, 0);
                        } else {
                            n = read(ioh->fd, buf, ioh->max_size);
                            if (n >= 0) {
                                ioh->fd_read(ioh->opaque, buf, n);
B
bellard 已提交
2378
                            } else if (errno != EAGAIN) {
2379 2380 2381
                                ioh->fd_read(ioh->opaque, NULL, -errno);
                            }
                        }
B
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2382 2383 2384 2385
                    }
                }
            }
        }
B
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2386
#endif /* !defined(_WIN32) */
B
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2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405
#if defined(CONFIG_SLIRP)
        /* XXX: merge with poll() */
        if (slirp_inited) {
            fd_set rfds, wfds, xfds;
            int nfds;
            struct timeval tv;

            nfds = -1;
            FD_ZERO(&rfds);
            FD_ZERO(&wfds);
            FD_ZERO(&xfds);
            slirp_select_fill(&nfds, &rfds, &wfds, &xfds);
            tv.tv_sec = 0;
            tv.tv_usec = 0;
            ret = select(nfds + 1, &rfds, &wfds, &xfds, &tv);
            if (ret >= 0) {
                slirp_select_poll(&rfds, &wfds, &xfds);
            }
        }
B
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2406
#endif
B
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2407

2408 2409 2410 2411
        if (vm_running) {
            qemu_run_timers(&active_timers[QEMU_TIMER_VIRTUAL], 
                            qemu_get_clock(vm_clock));
            
B
bellard 已提交
2412 2413 2414 2415
            if (audio_enabled) {
                /* XXX: add explicit timer */
                SB16_run();
            }
2416 2417 2418
            
            /* run dma transfers, if any */
            DMA_run();
B
bellard 已提交
2419
        }
2420

2421 2422 2423
        /* real time timers */
        qemu_run_timers(&active_timers[QEMU_TIMER_REALTIME], 
                        qemu_get_clock(rt_clock));
B
bellard 已提交
2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455
}

int main_loop(void)
{
    int ret, timeout;
    CPUState *env = global_env;

    for(;;) {
        if (vm_running) {
            ret = cpu_exec(env);
            if (shutdown_requested) {
                ret = EXCP_INTERRUPT; 
                break;
            }
            if (reset_requested) {
                reset_requested = 0;
                qemu_system_reset();
                ret = EXCP_INTERRUPT; 
            }
            if (ret == EXCP_DEBUG) {
                vm_stop(EXCP_DEBUG);
            }
            /* if hlt instruction, we wait until the next IRQ */
            /* XXX: use timeout computed from timers */
            if (ret == EXCP_HLT) 
                timeout = 10;
            else
                timeout = 0;
        } else {
            timeout = 10;
        }
        main_loop_wait(timeout);
B
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2456
    }
2457 2458
    cpu_disable_ticks();
    return ret;
B
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2459 2460
}

2461 2462
void help(void)
{
B
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2463
    printf("QEMU PC emulator version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n"
2464
           "usage: %s [options] [disk_image]\n"
2465
           "\n"
2466
           "'disk_image' is a raw hard image image for IDE hard disk 0\n"
B
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2467
           "\n"
2468
           "Standard options:\n"
2469
           "-fda/-fdb file  use 'file' as floppy disk 0/1 image\n"
2470 2471
           "-hda/-hdb file  use 'file' as IDE hard disk 0/1 image\n"
           "-hdc/-hdd file  use 'file' as IDE hard disk 2/3 image\n"
2472
           "-cdrom file     use 'file' as IDE cdrom image (cdrom is ide1 master)\n"
2473
           "-boot [a|b|c|d] boot on floppy (a, b), hard disk (c) or CD-ROM (d)\n"
2474
	   "-snapshot       write to temporary files instead of disk image files\n"
B
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2475
           "-m megs         set virtual RAM size to megs MB [default=%d]\n"
2476
           "-nographic      disable graphical output and redirect serial I/Os to console\n"
B
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2477
           "-enable-audio   enable audio support\n"
B
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2478
           "-localtime      set the real time clock to local time [default=utc]\n"
2479 2480
#ifdef TARGET_PPC
           "-prep           Simulate a PREP system (default is PowerMAC)\n"
2481
           "-g WxH[xDEPTH]  Set the initial VGA graphic mode\n"
2482
#endif
2483 2484
           "\n"
           "Network options:\n"
B
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2485
           "-nics n         simulate 'n' network cards [default=1]\n"
B
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2486
           "-macaddr addr   set the mac address of the first interface\n"
B
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2487 2488 2489 2490
           "-n script       set tap/tun network init script [default=%s]\n"
           "-tun-fd fd      use this fd as already opened tap/tun interface\n"
#ifdef CONFIG_SLIRP
           "-user-net       use user mode network stack [default if no tap/tun script]\n"
B
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2491
           "-tftp prefix    allow tftp access to files starting with prefix [-user-net]\n"
B
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2492
#ifndef _WIN32
B
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2493
           "-smb dir        allow SMB access to files in 'dir' [-user-net]\n"
B
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2494
#endif
B
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2495 2496
           "-redir [tcp|udp]:host-port:[guest-host]:guest-port\n"
           "                redirect TCP or UDP connections from host to guest [-user-net]\n"
B
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2497 2498
#endif
           "-dummy-net      use dummy network stack\n"
2499
           "\n"
2500
           "Linux boot specific:\n"
2501 2502 2503
           "-kernel bzImage use 'bzImage' as kernel image\n"
           "-append cmdline use 'cmdline' as kernel command line\n"
           "-initrd file    use 'file' as initial ram disk\n"
B
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2504
           "\n"
2505
           "Debug/Expert options:\n"
B
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2506 2507
           "-monitor dev    redirect the monitor to char device 'dev'\n"
           "-serial dev     redirect the serial port to char device 'dev'\n"
2508
           "-S              freeze CPU at startup (use 'c' to start execution)\n"
2509 2510
           "-s              wait gdb connection to port %d\n"
           "-p port         change gdb connection port\n"
2511
           "-d item1,...    output log to %s (use -d ? for a list of log items)\n"
2512 2513
           "-hdachs c,h,s   force hard disk 0 geometry (usually qemu can guess it)\n"
           "-L path         set the directory for the BIOS and VGA BIOS\n"
2514 2515 2516
#ifdef USE_CODE_COPY
           "-no-code-copy   disable code copy acceleration\n"
#endif
2517 2518
#ifdef TARGET_I386
           "-isa            simulate an ISA-only system (default is PCI system)\n"
2519 2520
           "-std-vga        simulate a standard VGA card with VESA Bochs Extensions\n"
           "                (default is CL-GD5446 PCI VGA)\n"
2521
#endif
2522
           "\n"
B
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2523 2524 2525 2526 2527 2528 2529
           "During emulation, the following keys are useful:\n"
           "ctrl-shift-f    toggle full screen\n"
           "ctrl-shift-Fn   switch to virtual console 'n'\n"
           "ctrl-shift      toggle mouse and keyboard grab\n"
           "\n"
           "When using -nographic, press 'ctrl-a h' to get some help.\n"
           ,
2530 2531 2532 2533 2534
#ifdef CONFIG_SOFTMMU
           "qemu",
#else
           "qemu-fast",
#endif
B
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2535 2536
           DEFAULT_RAM_SIZE,
           DEFAULT_NETWORK_SCRIPT,
2537 2538
           DEFAULT_GDBSTUB_PORT,
           "/tmp/qemu.log");
2539 2540 2541 2542 2543 2544
#ifndef CONFIG_SOFTMMU
    printf("\n"
           "NOTE: this version of QEMU is faster but it needs slightly patched OSes to\n"
           "work. Please use the 'qemu' executable to have a more accurate (but slower)\n"
           "PC emulation.\n");
#endif
2545 2546 2547
    exit(1);
}

2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570
#define HAS_ARG 0x0001

enum {
    QEMU_OPTION_h,

    QEMU_OPTION_fda,
    QEMU_OPTION_fdb,
    QEMU_OPTION_hda,
    QEMU_OPTION_hdb,
    QEMU_OPTION_hdc,
    QEMU_OPTION_hdd,
    QEMU_OPTION_cdrom,
    QEMU_OPTION_boot,
    QEMU_OPTION_snapshot,
    QEMU_OPTION_m,
    QEMU_OPTION_nographic,
    QEMU_OPTION_enable_audio,

    QEMU_OPTION_nics,
    QEMU_OPTION_macaddr,
    QEMU_OPTION_n,
    QEMU_OPTION_tun_fd,
    QEMU_OPTION_user_net,
B
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2571
    QEMU_OPTION_tftp,
B
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2572
    QEMU_OPTION_smb,
B
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2573
    QEMU_OPTION_redir,
2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586
    QEMU_OPTION_dummy_net,

    QEMU_OPTION_kernel,
    QEMU_OPTION_append,
    QEMU_OPTION_initrd,

    QEMU_OPTION_S,
    QEMU_OPTION_s,
    QEMU_OPTION_p,
    QEMU_OPTION_d,
    QEMU_OPTION_hdachs,
    QEMU_OPTION_L,
    QEMU_OPTION_no_code_copy,
B
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2587
    QEMU_OPTION_pci,
2588
    QEMU_OPTION_isa,
B
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2589
    QEMU_OPTION_prep,
B
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2590
    QEMU_OPTION_localtime,
B
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2591
    QEMU_OPTION_cirrusvga,
2592
    QEMU_OPTION_g,
2593
    QEMU_OPTION_std_vga,
B
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2594 2595
    QEMU_OPTION_monitor,
    QEMU_OPTION_serial,
2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621
};

typedef struct QEMUOption {
    const char *name;
    int flags;
    int index;
} QEMUOption;

const QEMUOption qemu_options[] = {
    { "h", 0, QEMU_OPTION_h },

    { "fda", HAS_ARG, QEMU_OPTION_fda },
    { "fdb", HAS_ARG, QEMU_OPTION_fdb },
    { "hda", HAS_ARG, QEMU_OPTION_hda },
    { "hdb", HAS_ARG, QEMU_OPTION_hdb },
    { "hdc", HAS_ARG, QEMU_OPTION_hdc },
    { "hdd", HAS_ARG, QEMU_OPTION_hdd },
    { "cdrom", HAS_ARG, QEMU_OPTION_cdrom },
    { "boot", HAS_ARG, QEMU_OPTION_boot },
    { "snapshot", 0, QEMU_OPTION_snapshot },
    { "m", HAS_ARG, QEMU_OPTION_m },
    { "nographic", 0, QEMU_OPTION_nographic },
    { "enable-audio", 0, QEMU_OPTION_enable_audio },

    { "nics", HAS_ARG, QEMU_OPTION_nics},
    { "macaddr", HAS_ARG, QEMU_OPTION_macaddr},
B
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2622
    { "n", HAS_ARG, QEMU_OPTION_n },
2623
    { "tun-fd", HAS_ARG, QEMU_OPTION_tun_fd },
B
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2624
#ifdef CONFIG_SLIRP
2625
    { "user-net", 0, QEMU_OPTION_user_net },
B
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2626
    { "tftp", HAS_ARG, QEMU_OPTION_tftp },
B
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2627
#ifndef _WIN32
B
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2628
    { "smb", HAS_ARG, QEMU_OPTION_smb },
B
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2629
#endif
B
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2630
    { "redir", HAS_ARG, QEMU_OPTION_redir },
B
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2631
#endif
2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644
    { "dummy-net", 0, QEMU_OPTION_dummy_net },

    { "kernel", HAS_ARG, QEMU_OPTION_kernel },
    { "append", HAS_ARG, QEMU_OPTION_append },
    { "initrd", HAS_ARG, QEMU_OPTION_initrd },

    { "S", 0, QEMU_OPTION_S },
    { "s", 0, QEMU_OPTION_s },
    { "p", HAS_ARG, QEMU_OPTION_p },
    { "d", HAS_ARG, QEMU_OPTION_d },
    { "hdachs", HAS_ARG, QEMU_OPTION_hdachs },
    { "L", HAS_ARG, QEMU_OPTION_L },
    { "no-code-copy", 0, QEMU_OPTION_no_code_copy },
B
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2645 2646
#ifdef TARGET_PPC
    { "prep", 0, QEMU_OPTION_prep },
2647
    { "g", 1, QEMU_OPTION_g },
B
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2648
#endif
B
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2649
    { "localtime", 0, QEMU_OPTION_localtime },
2650
    { "isa", 0, QEMU_OPTION_isa },
2651
    { "std-vga", 0, QEMU_OPTION_std_vga },
B
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2652 2653 2654
    { "monitor", 1, QEMU_OPTION_monitor },
    { "serial", 1, QEMU_OPTION_serial },
    
B
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2655 2656 2657
    /* temporary options */
    { "pci", 0, QEMU_OPTION_pci },
    { "cirrusvga", 0, QEMU_OPTION_cirrusvga },
2658
    { NULL },
B
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2659 2660
};

2661 2662 2663 2664 2665 2666 2667 2668 2669
#if defined (TARGET_I386) && defined(USE_CODE_COPY)

/* this stack is only used during signal handling */
#define SIGNAL_STACK_SIZE 32768

static uint8_t *signal_stack;

#endif

B
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2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706
/* password input */

static BlockDriverState *get_bdrv(int index)
{
    BlockDriverState *bs;

    if (index < 4) {
        bs = bs_table[index];
    } else if (index < 6) {
        bs = fd_table[index - 4];
    } else {
        bs = NULL;
    }
    return bs;
}

static void read_passwords(void)
{
    BlockDriverState *bs;
    int i, j;
    char password[256];

    for(i = 0; i < 6; i++) {
        bs = get_bdrv(i);
        if (bs && bdrv_is_encrypted(bs)) {
            term_printf("%s is encrypted.\n", bdrv_get_device_name(bs));
            for(j = 0; j < 3; j++) {
                monitor_readline("Password: ", 
                                 1, password, sizeof(password));
                if (bdrv_set_key(bs, password) == 0)
                    break;
                term_printf("invalid password\n");
            }
        }
    }
}

B
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2707 2708 2709 2710
#define NET_IF_TUN   0
#define NET_IF_USER  1
#define NET_IF_DUMMY 2

2711 2712
int main(int argc, char **argv)
{
B
bellard 已提交
2713 2714 2715
#ifdef CONFIG_GDBSTUB
    int use_gdbstub, gdbstub_port;
#endif
2716
    int i, has_cdrom;
2717
    int snapshot, linux_boot;
2718
    CPUState *env;
B
bellard 已提交
2719
    const char *initrd_filename;
2720
    const char *hd_filename[MAX_DISKS], *fd_filename[MAX_FD];
2721
    const char *kernel_filename, *kernel_cmdline;
2722
    DisplayState *ds = &display_state;
2723
    int cyls, heads, secs;
2724
    int start_emulation = 1;
B
bellard 已提交
2725
    uint8_t macaddr[6];
B
bellard 已提交
2726
    int net_if_type, nb_tun_fds, tun_fds[MAX_NICS];
2727 2728
    int optind;
    const char *r, *optarg;
B
bellard 已提交
2729 2730
    CharDriverState *monitor_hd;
    char monitor_device[128];
2731 2732 2733
    char serial_devices[MAX_SERIAL_PORTS][128];
    int serial_device_index;
    
B
bellard 已提交
2734
#if !defined(CONFIG_SOFTMMU)
2735 2736
    /* we never want that malloc() uses mmap() */
    mallopt(M_MMAP_THRESHOLD, 4096 * 1024);
B
bellard 已提交
2737
#endif
B
bellard 已提交
2738
    initrd_filename = NULL;
2739 2740
    for(i = 0; i < MAX_FD; i++)
        fd_filename[i] = NULL;
B
bellard 已提交
2741 2742
    for(i = 0; i < MAX_DISKS; i++)
        hd_filename[i] = NULL;
B
bellard 已提交
2743
    ram_size = DEFAULT_RAM_SIZE * 1024 * 1024;
2744
    vga_ram_size = VGA_RAM_SIZE;
B
bellard 已提交
2745
    bios_size = BIOS_SIZE;
B
bellard 已提交
2746
    pstrcpy(network_script, sizeof(network_script), DEFAULT_NETWORK_SCRIPT);
B
bellard 已提交
2747
#ifdef CONFIG_GDBSTUB
B
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2748 2749
    use_gdbstub = 0;
    gdbstub_port = DEFAULT_GDBSTUB_PORT;
B
bellard 已提交
2750
#endif
2751
    snapshot = 0;
2752 2753 2754
    nographic = 0;
    kernel_filename = NULL;
    kernel_cmdline = "";
2755 2756
    has_cdrom = 1;
    cyls = heads = secs = 0;
B
bellard 已提交
2757
    pstrcpy(monitor_device, sizeof(monitor_device), "vc");
2758

2759 2760 2761 2762 2763
    pstrcpy(serial_devices[0], sizeof(serial_devices[0]), "vc");
    for(i = 1; i < MAX_SERIAL_PORTS; i++)
        serial_devices[i][0] = '\0';
    serial_device_index = 0;
    
B
bellard 已提交
2764 2765
    nb_tun_fds = 0;
    net_if_type = -1;
2766
    nb_nics = 1;
B
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2767 2768 2769 2770 2771 2772 2773
    /* default mac address of the first network interface */
    macaddr[0] = 0x52;
    macaddr[1] = 0x54;
    macaddr[2] = 0x00;
    macaddr[3] = 0x12;
    macaddr[4] = 0x34;
    macaddr[5] = 0x56;
B
bellard 已提交
2774
    
2775
    optind = 1;
2776
    for(;;) {
2777
        if (optind >= argc)
2778
            break;
2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809
        r = argv[optind];
        if (r[0] != '-') {
            hd_filename[0] = argv[optind++];
        } else {
            const QEMUOption *popt;

            optind++;
            popt = qemu_options;
            for(;;) {
                if (!popt->name) {
                    fprintf(stderr, "%s: invalid option -- '%s'\n", 
                            argv[0], r);
                    exit(1);
                }
                if (!strcmp(popt->name, r + 1))
                    break;
                popt++;
            }
            if (popt->flags & HAS_ARG) {
                if (optind >= argc) {
                    fprintf(stderr, "%s: option '%s' requires an argument\n",
                            argv[0], r);
                    exit(1);
                }
                optarg = argv[optind++];
            } else {
                optarg = NULL;
            }

            switch(popt->index) {
            case QEMU_OPTION_initrd:
B
bellard 已提交
2810 2811
                initrd_filename = optarg;
                break;
2812
            case QEMU_OPTION_hda:
B
bellard 已提交
2813 2814
                hd_filename[0] = optarg;
                break;
2815
            case QEMU_OPTION_hdb:
B
bellard 已提交
2816 2817
                hd_filename[1] = optarg;
                break;
2818
            case QEMU_OPTION_snapshot:
2819 2820
                snapshot = 1;
                break;
2821
            case QEMU_OPTION_hdachs:
2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833
                {
                    const char *p;
                    p = optarg;
                    cyls = strtol(p, (char **)&p, 0);
                    if (*p != ',')
                        goto chs_fail;
                    p++;
                    heads = strtol(p, (char **)&p, 0);
                    if (*p != ',')
                        goto chs_fail;
                    p++;
                    secs = strtol(p, (char **)&p, 0);
2834 2835 2836 2837
                    if (*p != '\0') {
                    chs_fail:
                        cyls = 0;
                    }
2838 2839
                }
                break;
2840
            case QEMU_OPTION_nographic:
B
bellard 已提交
2841
                pstrcpy(monitor_device, sizeof(monitor_device), "stdio");
2842
                pstrcpy(serial_devices[0], sizeof(serial_devices[0]), "stdio");
2843 2844
                nographic = 1;
                break;
2845
            case QEMU_OPTION_kernel:
2846 2847
                kernel_filename = optarg;
                break;
2848
            case QEMU_OPTION_append:
2849
                kernel_cmdline = optarg;
2850
                break;
2851
	    case QEMU_OPTION_tun_fd:
2852 2853 2854
                {
                    const char *p;
                    int fd;
B
bellard 已提交
2855
                    net_if_type = NET_IF_TUN;
B
bellard 已提交
2856 2857 2858 2859
                    if (nb_tun_fds < MAX_NICS) {
                        fd = strtol(optarg, (char **)&p, 0);
                        if (*p != '\0') {
                            fprintf(stderr, "qemu: invalid fd for network interface %d\n", nb_tun_fds);
2860 2861
                            exit(1);
                        }
B
bellard 已提交
2862
                        tun_fds[nb_tun_fds++] = fd;
2863 2864
                    }
                }
2865
		break;
2866
            case QEMU_OPTION_hdc:
2867
                hd_filename[2] = optarg;
2868
                has_cdrom = 0;
2869
                break;
2870
            case QEMU_OPTION_hdd:
2871 2872
                hd_filename[3] = optarg;
                break;
2873
            case QEMU_OPTION_cdrom:
2874
                hd_filename[2] = optarg;
2875
                has_cdrom = 1;
2876
                break;
2877
            case QEMU_OPTION_boot:
2878
                boot_device = optarg[0];
2879 2880
                if (boot_device != 'a' && boot_device != 'b' &&
                    boot_device != 'c' && boot_device != 'd') {
2881 2882 2883 2884
                    fprintf(stderr, "qemu: invalid boot device '%c'\n", boot_device);
                    exit(1);
                }
                break;
2885
            case QEMU_OPTION_fda:
2886 2887
                fd_filename[0] = optarg;
                break;
2888
            case QEMU_OPTION_fdb:
2889 2890
                fd_filename[1] = optarg;
                break;
2891
            case QEMU_OPTION_no_code_copy:
2892 2893
                code_copy_enabled = 0;
                break;
2894
            case QEMU_OPTION_nics:
2895
                nb_nics = atoi(optarg);
B
bellard 已提交
2896
                if (nb_nics < 0 || nb_nics > MAX_NICS) {
2897 2898 2899 2900
                    fprintf(stderr, "qemu: invalid number of network interfaces\n");
                    exit(1);
                }
                break;
2901
            case QEMU_OPTION_macaddr:
B
bellard 已提交
2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921
                {
                    const char *p;
                    int i;
                    p = optarg;
                    for(i = 0; i < 6; i++) {
                        macaddr[i] = strtol(p, (char **)&p, 16);
                        if (i == 5) {
                            if (*p != '\0') 
                                goto macaddr_error;
                        } else {
                            if (*p != ':') {
                            macaddr_error:
                                fprintf(stderr, "qemu: invalid syntax for ethernet address\n");
                                exit(1);
                            }
                            p++;
                        }
                    }
                }
                break;
B
bellard 已提交
2922 2923 2924
#ifdef CONFIG_SLIRP
            case QEMU_OPTION_tftp:
		tftp_prefix = optarg;
B
bellard 已提交
2925
                break;
B
bellard 已提交
2926
#ifndef _WIN32
B
bellard 已提交
2927 2928 2929
            case QEMU_OPTION_smb:
		net_slirp_smb(optarg);
                break;
B
bellard 已提交
2930
#endif
2931
            case QEMU_OPTION_user_net:
B
bellard 已提交
2932 2933
                net_if_type = NET_IF_USER;
                break;
B
bellard 已提交
2934 2935 2936
            case QEMU_OPTION_redir:
                net_slirp_redir(optarg);                
                break;
B
bellard 已提交
2937
#endif
2938
            case QEMU_OPTION_dummy_net:
B
bellard 已提交
2939 2940
                net_if_type = NET_IF_DUMMY;
                break;
2941
            case QEMU_OPTION_enable_audio:
B
bellard 已提交
2942 2943
                audio_enabled = 1;
                break;
2944
            case QEMU_OPTION_h:
2945
                help();
2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964
                break;
            case QEMU_OPTION_m:
                ram_size = atoi(optarg) * 1024 * 1024;
                if (ram_size <= 0)
                    help();
                if (ram_size > PHYS_RAM_MAX_SIZE) {
                    fprintf(stderr, "qemu: at most %d MB RAM can be simulated\n",
                            PHYS_RAM_MAX_SIZE / (1024 * 1024));
                    exit(1);
                }
                break;
            case QEMU_OPTION_d:
                {
                    int mask;
                    CPULogItem *item;
                    
                    mask = cpu_str_to_log_mask(optarg);
                    if (!mask) {
                        printf("Log items (comma separated):\n");
2965 2966 2967 2968
                    for(item = cpu_log_items; item->mask != 0; item++) {
                        printf("%-10s %s\n", item->name, item->help);
                    }
                    exit(1);
2969 2970
                    }
                    cpu_set_log(mask);
2971
                }
2972 2973 2974 2975
                break;
            case QEMU_OPTION_n:
                pstrcpy(network_script, sizeof(network_script), optarg);
                break;
B
bellard 已提交
2976
#ifdef CONFIG_GDBSTUB
2977 2978 2979 2980 2981 2982
            case QEMU_OPTION_s:
                use_gdbstub = 1;
                break;
            case QEMU_OPTION_p:
                gdbstub_port = atoi(optarg);
                break;
B
bellard 已提交
2983
#endif
2984 2985 2986 2987 2988 2989
            case QEMU_OPTION_L:
                bios_dir = optarg;
                break;
            case QEMU_OPTION_S:
                start_emulation = 0;
                break;
B
bellard 已提交
2990 2991 2992
            case QEMU_OPTION_pci:
                pci_enabled = 1;
                break;
2993 2994 2995
            case QEMU_OPTION_isa:
                pci_enabled = 0;
                break;
B
bellard 已提交
2996 2997 2998
            case QEMU_OPTION_prep:
                prep_enabled = 1;
                break;
B
bellard 已提交
2999 3000 3001
            case QEMU_OPTION_localtime:
                rtc_utc = 0;
                break;
B
bellard 已提交
3002 3003 3004
            case QEMU_OPTION_cirrusvga:
                cirrus_vga_enabled = 1;
                break;
3005 3006 3007
            case QEMU_OPTION_std_vga:
                cirrus_vga_enabled = 0;
                break;
3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041
            case QEMU_OPTION_g:
                {
                    const char *p;
                    int w, h, depth;
                    p = optarg;
                    w = strtol(p, (char **)&p, 10);
                    if (w <= 0) {
                    graphic_error:
                        fprintf(stderr, "qemu: invalid resolution or depth\n");
                        exit(1);
                    }
                    if (*p != 'x')
                        goto graphic_error;
                    p++;
                    h = strtol(p, (char **)&p, 10);
                    if (h <= 0)
                        goto graphic_error;
                    if (*p == 'x') {
                        p++;
                        depth = strtol(p, (char **)&p, 10);
                        if (depth != 8 && depth != 15 && depth != 16 && 
                            depth != 24 && depth != 32)
                            goto graphic_error;
                    } else if (*p == '\0') {
                        depth = graphic_depth;
                    } else {
                        goto graphic_error;
                    }
                    
                    graphic_width = w;
                    graphic_height = h;
                    graphic_depth = depth;
                }
                break;
B
bellard 已提交
3042 3043 3044 3045
            case QEMU_OPTION_monitor:
                pstrcpy(monitor_device, sizeof(monitor_device), optarg);
                break;
            case QEMU_OPTION_serial:
3046 3047 3048 3049 3050 3051 3052
                if (serial_device_index >= MAX_SERIAL_PORTS) {
                    fprintf(stderr, "qemu: too many serial ports\n");
                    exit(1);
                }
                pstrcpy(serial_devices[serial_device_index], 
                        sizeof(serial_devices[0]), optarg);
                serial_device_index++;
B
bellard 已提交
3053
                break;
3054
            }
3055 3056
        }
    }
3057

3058
    linux_boot = (kernel_filename != NULL);
3059
        
3060 3061
    if (!linux_boot && hd_filename[0] == '\0' && hd_filename[2] == '\0' &&
        fd_filename[0] == '\0')
3062
        help();
3063 3064
    
    /* boot to cd by default if no hard disk */
B
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3065 3066 3067 3068 3069 3070
    if (hd_filename[0] == '\0' && boot_device == 'c') {
        if (fd_filename[0] != '\0')
            boot_device = 'a';
        else
            boot_device = 'd';
    }
3071

3072 3073 3074 3075 3076 3077 3078
#if !defined(CONFIG_SOFTMMU)
    /* must avoid mmap() usage of glibc by setting a buffer "by hand" */
    {
        static uint8_t stdout_buf[4096];
        setvbuf(stdout, stdout_buf, _IOLBF, sizeof(stdout_buf));
    }
#else
B
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3079
    setvbuf(stdout, NULL, _IOLBF, 0);
3080
#endif
3081

3082
    /* init host network redirectors */
B
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3083 3084 3085 3086 3087 3088 3089 3090 3091 3092
    if (net_if_type == -1) {
        net_if_type = NET_IF_TUN;
#if defined(CONFIG_SLIRP)
        if (access(network_script, R_OK) < 0) {
            net_if_type = NET_IF_USER;
        }
#endif
    }

    for(i = 0; i < nb_nics; i++) {
B
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3093
        NetDriverState *nd = &nd_table[i];
B
bellard 已提交
3094
        nd->index = i;
B
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3095 3096 3097 3098 3099 3100 3101
        /* init virtual mac address */
        nd->macaddr[0] = macaddr[0];
        nd->macaddr[1] = macaddr[1];
        nd->macaddr[2] = macaddr[2];
        nd->macaddr[3] = macaddr[3];
        nd->macaddr[4] = macaddr[4];
        nd->macaddr[5] = macaddr[5] + i;
B
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3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112
        switch(net_if_type) {
#if defined(CONFIG_SLIRP)
        case NET_IF_USER:
            net_slirp_init(nd);
            break;
#endif
#if !defined(_WIN32)
        case NET_IF_TUN:
            if (i < nb_tun_fds) {
                net_fd_init(nd, tun_fds[i]);
            } else {
3113 3114
                if (net_tun_init(nd) < 0)
                    net_dummy_init(nd);
B
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3115 3116 3117 3118 3119 3120 3121 3122
            }
            break;
#endif
        case NET_IF_DUMMY:
        default:
            net_dummy_init(nd);
            break;
        }
B
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3123
    }
B
bellard 已提交
3124

3125
    /* init the memory */
B
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3126
    phys_ram_size = ram_size + vga_ram_size + bios_size;
B
bellard 已提交
3127 3128

#ifdef CONFIG_SOFTMMU
B
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3129
#ifdef _BSD
3130 3131
    /* mallocs are always aligned on BSD. valloc is better for correctness */
    phys_ram_base = valloc(phys_ram_size);
B
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3132
#else
3133
    phys_ram_base = memalign(TARGET_PAGE_SIZE, phys_ram_size);
B
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3134
#endif
B
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3135 3136
    if (!phys_ram_base) {
        fprintf(stderr, "Could not allocate physical memory\n");
3137 3138
        exit(1);
    }
B
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3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159
#else
    /* as we must map the same page at several addresses, we must use
       a fd */
    {
        const char *tmpdir;

        tmpdir = getenv("QEMU_TMPDIR");
        if (!tmpdir)
            tmpdir = "/tmp";
        snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/vlXXXXXX", tmpdir);
        if (mkstemp(phys_ram_file) < 0) {
            fprintf(stderr, "Could not create temporary memory file '%s'\n", 
                    phys_ram_file);
            exit(1);
        }
        phys_ram_fd = open(phys_ram_file, O_CREAT | O_TRUNC | O_RDWR, 0600);
        if (phys_ram_fd < 0) {
            fprintf(stderr, "Could not open temporary memory file '%s'\n", 
                    phys_ram_file);
            exit(1);
        }
3160
        ftruncate(phys_ram_fd, phys_ram_size);
B
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3161
        unlink(phys_ram_file);
3162 3163
        phys_ram_base = mmap(get_mmap_addr(phys_ram_size), 
                             phys_ram_size, 
B
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3164 3165 3166 3167 3168 3169 3170 3171
                             PROT_WRITE | PROT_READ, MAP_SHARED | MAP_FIXED, 
                             phys_ram_fd, 0);
        if (phys_ram_base == MAP_FAILED) {
            fprintf(stderr, "Could not map physical memory\n");
            exit(1);
        }
    }
#endif
3172

3173
    /* we always create the cdrom drive, even if no disk is there */
B
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3174
    bdrv_init();
3175 3176 3177 3178 3179
    if (has_cdrom) {
        bs_table[2] = bdrv_new("cdrom");
        bdrv_set_type_hint(bs_table[2], BDRV_TYPE_CDROM);
    }

3180 3181 3182 3183
    /* open the virtual block devices */
    for(i = 0; i < MAX_DISKS; i++) {
        if (hd_filename[i]) {
            if (!bs_table[i]) {
3184 3185 3186 3187 3188
                char buf[64];
                snprintf(buf, sizeof(buf), "hd%c", i + 'a');
                bs_table[i] = bdrv_new(buf);
            }
            if (bdrv_open(bs_table[i], hd_filename[i], snapshot) < 0) {
B
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3189
                fprintf(stderr, "qemu: could not open hard disk image '%s'\n",
3190 3191 3192
                        hd_filename[i]);
                exit(1);
            }
3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211
            if (i == 0 && cyls != 0) 
                bdrv_set_geometry_hint(bs_table[i], cyls, heads, secs);
        }
    }

    /* we always create at least one floppy disk */
    fd_table[0] = bdrv_new("fda");
    bdrv_set_type_hint(fd_table[0], BDRV_TYPE_FLOPPY);

    for(i = 0; i < MAX_FD; i++) {
        if (fd_filename[i]) {
            if (!fd_table[i]) {
                char buf[64];
                snprintf(buf, sizeof(buf), "fd%c", i + 'a');
                fd_table[i] = bdrv_new(buf);
                bdrv_set_type_hint(fd_table[i], BDRV_TYPE_FLOPPY);
            }
            if (fd_filename[i] != '\0') {
                if (bdrv_open(fd_table[i], fd_filename[i], snapshot) < 0) {
B
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3212
                    fprintf(stderr, "qemu: could not open floppy disk image '%s'\n",
3213 3214 3215 3216
                            fd_filename[i]);
                    exit(1);
                }
            }
3217 3218 3219
        }
    }

3220 3221 3222 3223 3224
    /* init CPU state */
    env = cpu_init();
    global_env = env;
    cpu_single_env = env;

3225
    register_savevm("timer", 0, 1, timer_save, timer_load, env);
3226
    register_savevm("cpu", 0, 2, cpu_save, cpu_load, env);
3227
    register_savevm("ram", 0, 1, ram_save, ram_load, NULL);
3228
    qemu_register_reset(main_cpu_reset, global_env);
3229

3230
    init_ioports();
B
bellard 已提交
3231
    cpu_calibrate_ticks();
3232

3233
    /* terminal init */
3234
    if (nographic) {
3235 3236 3237 3238 3239 3240 3241 3242
        dumb_display_init(ds);
    } else {
#ifdef CONFIG_SDL
        sdl_display_init(ds);
#else
        dumb_display_init(ds);
#endif
    }
3243

B
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3244 3245 3246 3247 3248 3249 3250 3251 3252
    vga_console = graphic_console_init(ds);
    
    monitor_hd = qemu_chr_open(monitor_device);
    if (!monitor_hd) {
        fprintf(stderr, "qemu: could not open monitor device '%s'\n", monitor_device);
        exit(1);
    }
    monitor_init(monitor_hd, !nographic);

3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263
    for(i = 0; i < MAX_SERIAL_PORTS; i++) {
        if (serial_devices[i][0] != '\0') {
            serial_hds[i] = qemu_chr_open(serial_devices[i]);
            if (!serial_hds[i]) {
                fprintf(stderr, "qemu: could not open serial device '%s'\n", 
                        serial_devices[i]);
                exit(1);
            }
            if (!strcmp(serial_devices[i], "vc"))
                qemu_chr_printf(serial_hds[i], "serial%d console\n", i);
        }
B
bellard 已提交
3264 3265
    }

3266
    /* setup cpu signal handlers for MMU / self modifying code handling */
3267
#if !defined(CONFIG_SOFTMMU)
3268
    
3269 3270 3271
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
    {
        stack_t stk;
B
bellard 已提交
3272
        signal_stack = memalign(16, SIGNAL_STACK_SIZE);
3273 3274 3275 3276 3277 3278 3279 3280 3281 3282
        stk.ss_sp = signal_stack;
        stk.ss_size = SIGNAL_STACK_SIZE;
        stk.ss_flags = 0;

        if (sigaltstack(&stk, NULL) < 0) {
            perror("sigaltstack");
            exit(1);
        }
    }
#endif
3283 3284
    {
        struct sigaction act;
3285
        
3286 3287
        sigfillset(&act.sa_mask);
        act.sa_flags = SA_SIGINFO;
3288
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
3289
        act.sa_flags |= SA_ONSTACK;
3290
#endif
3291 3292 3293
        act.sa_sigaction = host_segv_handler;
        sigaction(SIGSEGV, &act, NULL);
        sigaction(SIGBUS, &act, NULL);
3294
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
3295
        sigaction(SIGFPE, &act, NULL);
3296
#endif
3297
    }
3298
#endif
3299

B
bellard 已提交
3300
#ifndef _WIN32
3301 3302 3303 3304 3305 3306 3307
    {
        struct sigaction act;
        sigfillset(&act.sa_mask);
        act.sa_flags = 0;
        act.sa_handler = SIG_IGN;
        sigaction(SIGPIPE, &act, NULL);
    }
B
bellard 已提交
3308
#endif
B
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3309 3310 3311 3312 3313 3314 3315
    init_timers();

#if defined(TARGET_I386)
    pc_init(ram_size, vga_ram_size, boot_device,
            ds, fd_filename, snapshot,
            kernel_filename, kernel_cmdline, initrd_filename);
#elif defined(TARGET_PPC)
3316 3317 3318
    ppc_init(ram_size, vga_ram_size, boot_device,
	     ds, fd_filename, snapshot,
	     kernel_filename, kernel_cmdline, initrd_filename);
B
bellard 已提交
3319 3320
#endif

3321 3322
    gui_timer = qemu_new_timer(rt_clock, gui_update, NULL);
    qemu_mod_timer(gui_timer, qemu_get_clock(rt_clock));
B
bellard 已提交
3323

B
bellard 已提交
3324
#ifdef CONFIG_GDBSTUB
B
bellard 已提交
3325
    if (use_gdbstub) {
3326 3327 3328 3329 3330 3331 3332
        if (gdbserver_start(gdbstub_port) < 0) {
            fprintf(stderr, "Could not open gdbserver socket on port %d\n", 
                    gdbstub_port);
            exit(1);
        } else {
            printf("Waiting gdb connection on port %d\n", gdbstub_port);
        }
B
bellard 已提交
3333 3334 3335
    } else 
#endif
    {
B
bellard 已提交
3336 3337 3338 3339 3340
        /* XXX: simplify init */
        read_passwords();
        if (start_emulation) {
            vm_start();
        }
3341
    }
3342
    main_loop();
B
bellard 已提交
3343
    quit_timers();
3344 3345
    return 0;
}