vl.c 91.7 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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const char* keyboard_layout = NULL;
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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 sb16_enabled = 1;
int adlib_enabled = 1;
int gus_enabled = 1;
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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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int full_screen = 0;
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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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/***********************************************************/

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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
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    cpu_dump_state(global_env, stderr, fprintf, X86_DUMP_FPU | X86_DUMP_CCOP);
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#else
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    cpu_dump_state(global_env, stderr, fprintf, 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
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

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;
720
        if (!ts || ts->expire_time > current_time)
721 722 723 724 725 726 727 728 729 730 731 732 733 734
            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;
            }
749
        }
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#endif
751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802
    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
807
static void host_alarm_handler(int host_signum)
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#endif
809
{
810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838
#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
839 840 841 842 843 844 845 846 847
    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);
    }
}

848 849
#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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856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875
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) */
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887 888 889 890 891
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;
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#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);
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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);
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932
#if defined(__linux__)
933 934 935 936 937 938 939 940 941 942 943 944
        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());
948 949 950
        } else 
#endif /* defined(__linux__) */
        {
951 952 953 954
        use_itimer:
            pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * 
                                   PIT_FREQ) / 1000000;
        }
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    }
956 957 958
#endif
}

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

966
/***********************************************************/
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/* character device */
968

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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)
1003
{
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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];

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static int unix_write(int fd, const uint8_t *buf, int len1)
{
    int ret, len;

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

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

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);
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        }
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    }
}

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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]);
}

1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235
/* 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;
1253 1254 1255 1256
    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 */
1303

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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
1590
static int tun_open(char *ifname, int ifname_size)
1591
{
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    struct ifreq ifr;
1593
    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;
1599
    }
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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);
1610
    pstrcpy(ifname, ifname_size, ifr.ifr_name);
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    fcntl(fd, F_SETFL, O_NONBLOCK);
1612 1613
    return fd;
}
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#endif
1615

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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)
1624
{
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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];
1632 1633
    char **parg;

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    nd->fd = tun_open(nd->ifname, sizeof(nd->ifname));
    if (nd->fd < 0)
        return -1;
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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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        }
1655
    }
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    nd->send_packet = tun_send_packet;
    nd->add_read_packet = tun_add_read_packet;
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    return 0;
1659 1660
}

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static int net_fd_init(NetDriverState *nd, int fd)
1662
{
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    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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}
1669

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#endif /* !_WIN32 */
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/***********************************************************/
/* pid file */

static char *pid_filename;

/* Remove PID file. Called on normal exit */

static void remove_pidfile(void) 
{
    unlink (pid_filename);
}

static void create_pidfile(const char *filename)
{
    struct stat pidstat;
    FILE *f;

    /* Try to write our PID to the named file */
    if (stat(filename, &pidstat) < 0) {
        if (errno == ENOENT) {
            if ((f = fopen (filename, "w")) == NULL) {
                perror("Opening pidfile");
                exit(1);
            }
            fprintf(f, "%d\n", getpid());
            fclose(f);
            pid_filename = qemu_strdup(filename);
            if (!pid_filename) {
                fprintf(stderr, "Could not save PID filename");
                exit(1);
            }
            atexit(remove_pidfile);
        }
    } else {
        fprintf(stderr, "%s already exists. Remove it and try again.\n", 
                filename);
        exit(1);
    }
}

1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737
/***********************************************************/
/* 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;
}

1738
#if !defined(CONFIG_SOFTMMU)
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/***********************************************************/
1740 1741 1742 1743 1744 1745
/* 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;
1746 1747
    if (stdio_nb_clients > 0)
        term_exit();
1748 1749
    abort();
}
1750
#endif
1751

1752 1753
/***********************************************************/
/* I/O handling */
1754

1755 1756 1757 1758 1759 1760 1761 1762 1763 1764
#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;
1765
    struct IOHandlerRecord *next;
1766 1767
} IOHandlerRecord;

1768
static IOHandlerRecord *first_io_handler;
1769

1770 1771
int qemu_add_fd_read_handler(int fd, IOCanRWHandler *fd_can_read, 
                             IOReadHandler *fd_read, void *opaque)
1772 1773 1774
{
    IOHandlerRecord *ioh;

1775 1776
    ioh = qemu_mallocz(sizeof(IOHandlerRecord));
    if (!ioh)
1777 1778 1779 1780 1781
        return -1;
    ioh->fd = fd;
    ioh->fd_can_read = fd_can_read;
    ioh->fd_read = fd_read;
    ioh->opaque = opaque;
1782 1783
    ioh->next = first_io_handler;
    first_io_handler = ioh;
1784 1785 1786
    return 0;
}

1787 1788 1789
void qemu_del_fd_read_handler(int fd)
{
    IOHandlerRecord **pioh, *ioh;
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    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)
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{
1809
    fwrite(buf, 1, size, f);
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}

1812
void qemu_put_byte(QEMUFile *f, int v)
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{
1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 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 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898
    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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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;
1946 1947
    }

1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021
    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;
    }
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    for(;;) {
2023
#if defined (DO_TB_FLUSH)
2024
        tb_flush(global_env);
2025
#endif
2026 2027
        len = qemu_get_byte(f);
        if (feof(f))
2028
            break;
2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048
        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);
            }
2049
        }
2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067
        /* 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)
{
2068
    qemu_put_be32(f, dt->selector);
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    qemu_put_betl(f, dt->base);
2070 2071 2072 2073 2074 2075
    qemu_put_be32(f, dt->limit);
    qemu_put_be32(f, dt->flags);
}

static void cpu_get_seg(QEMUFile *f, SegmentCache *dt)
{
2076
    dt->selector = qemu_get_be32(f);
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    dt->base = qemu_get_betl(f);
2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088
    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;

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    for(i = 0; i < CPU_NB_REGS; i++)
        qemu_put_betls(f, &env->regs[i]);
    qemu_put_betls(f, &env->eip);
    qemu_put_betls(f, &env->eflags);
    qemu_put_betl(f, 0); /* XXX: suppress that */
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
    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);
    
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    qemu_put_betls(f, &env->cr[0]);
    qemu_put_betls(f, &env->cr[2]);
    qemu_put_betls(f, &env->cr[3]);
    qemu_put_betls(f, &env->cr[4]);
2135 2136
    
    for(i = 0; i < 8; i++)
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        qemu_put_betls(f, &env->dr[i]);
2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149

    /* 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;

2150
    if (version_id != 2)
2151
        return -EINVAL;
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    for(i = 0; i < CPU_NB_REGS; i++)
        qemu_get_betls(f, &env->regs[i]);
    qemu_get_betls(f, &env->eip);
    qemu_get_betls(f, &env->eflags);
    qemu_get_betl(f); /* XXX: suppress that */
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
    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);
    
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    qemu_get_betls(f, &env->cr[0]);
    qemu_get_betls(f, &env->cr[2]);
    qemu_get_betls(f, &env->cr[3]);
    qemu_get_betls(f, &env->cr[4]);
2194 2195
    
    for(i = 0; i < 8; i++)
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        qemu_get_betls(f, &env->dr[i]);
2197 2198 2199 2200 2201 2202 2203 2204 2205 2206

    /* 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;
}

2207 2208 2209 2210 2211
#elif defined(TARGET_PPC)
void cpu_save(QEMUFile *f, void *opaque)
{
}

2212 2213 2214 2215 2216 2217 2218
int cpu_load(QEMUFile *f, void *opaque, int version_id)
{
    return 0;
}
#elif defined(TARGET_SPARC)
void cpu_save(QEMUFile *f, void *opaque)
{
B
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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
    CPUState *env = opaque;
    int i;
    uint32_t tmp;

    for(i = 1; i < 8; i++)
        qemu_put_be32s(f, &env->gregs[i]);
    tmp = env->regwptr - env->regbase;
    qemu_put_be32s(f, &tmp);
    for(i = 1; i < NWINDOWS * 16 + 8; i++)
        qemu_put_be32s(f, &env->regbase[i]);

    /* FPU */
    for(i = 0; i < 32; i++) {
        uint64_t mant;
        uint16_t exp;
	cpu_get_fp64(&mant, &exp, env->fpr[i]);
        qemu_put_be64(f, mant);
        qemu_put_be16(f, exp);
    }
    qemu_put_be32s(f, &env->pc);
    qemu_put_be32s(f, &env->npc);
    qemu_put_be32s(f, &env->y);
    tmp = GET_PSR(env);
    qemu_put_be32s(f, &tmp);
    qemu_put_be32s(f, &env->fsr);
    qemu_put_be32s(f, &env->cwp);
    qemu_put_be32s(f, &env->wim);
    qemu_put_be32s(f, &env->tbr);
    /* MMU */
    for(i = 0; i < 16; i++)
        qemu_put_be32s(f, &env->mmuregs[i]);
2250 2251
}

2252 2253
int cpu_load(QEMUFile *f, void *opaque, int version_id)
{
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    CPUState *env = opaque;
    int i;
    uint32_t tmp;

    for(i = 1; i < 8; i++)
        qemu_get_be32s(f, &env->gregs[i]);
    qemu_get_be32s(f, &tmp);
    env->regwptr = env->regbase + tmp;
    for(i = 1; i < NWINDOWS * 16 + 8; i++)
        qemu_get_be32s(f, &env->regbase[i]);

    /* FPU */
    for(i = 0; i < 32; i++) {
        uint64_t mant;
        uint16_t exp;

        qemu_get_be64s(f, &mant);
        qemu_get_be16s(f, &exp);
	env->fpr[i] = cpu_put_fp64(mant, exp);
    }
    qemu_get_be32s(f, &env->pc);
    qemu_get_be32s(f, &env->npc);
    qemu_get_be32s(f, &env->y);
    qemu_get_be32s(f, &tmp);
    PUT_PSR(env, tmp);
    qemu_get_be32s(f, &env->fsr);
    qemu_get_be32s(f, &env->cwp);
    qemu_get_be32s(f, &env->wim);
    qemu_get_be32s(f, &env->tbr);
    /* MMU */
    for(i = 0; i < 16; i++)
        qemu_get_be32s(f, &env->mmuregs[i]);
    tlb_flush(env, 1);
2287 2288
    return 0;
}
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 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402
#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);
            }
2403
        }
2404 2405 2406
    }
}

2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 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 2456
/* 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)
{
B
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#if defined(TARGET_I386) || defined(TARGET_SPARC)
2458 2459 2460 2461 2462
    CPUState *env = opaque;
    cpu_reset(env);
#endif
}

B
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void main_loop_wait(int timeout)
2464
{
B
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2465
#ifndef _WIN32
2466 2467
    struct pollfd ufds[MAX_IO_HANDLERS + 1], *pf;
    IOHandlerRecord *ioh, *ioh_next;
B
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2468 2469 2470
    uint8_t buf[4096];
    int n, max_size;
#endif
B
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2471
    int ret;
2472

B
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2473 2474 2475 2476
#ifdef _WIN32
        if (timeout > 0)
            Sleep(timeout);
#else
B
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2477
        /* poll any events */
2478
        /* XXX: separate device handlers from system ones */
B
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2479
        pf = ufds;
2480 2481 2482
        for(ioh = first_io_handler; ioh != NULL; ioh = ioh->next) {
            if (!ioh->fd_can_read) {
                max_size = 0;
2483 2484 2485 2486 2487
                pf->fd = ioh->fd;
                pf->events = POLLIN;
                ioh->ufd = pf;
                pf++;
            } else {
2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498
                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;
                }
2499 2500
            }
            ioh->max_size = max_size;
B
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2501
        }
B
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B
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2503 2504
        ret = poll(ufds, pf - ufds, timeout);
        if (ret > 0) {
2505 2506 2507
            /* XXX: better handling of removal */
            for(ioh = first_io_handler; ioh != NULL; ioh = ioh_next) {
                ioh_next = ioh->next;
2508 2509
                pf = ioh->ufd;
                if (pf) {
2510 2511 2512 2513 2514 2515 2516 2517
                    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
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                            } else if (errno != EAGAIN) {
2519 2520 2521
                                ioh->fd_read(ioh->opaque, NULL, -errno);
                            }
                        }
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2522 2523 2524 2525
                    }
                }
            }
        }
B
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#endif /* !defined(_WIN32) */
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2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545
#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);
            }
        }
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2546
#endif
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2547

2548 2549 2550 2551 2552
        if (vm_running) {
            qemu_run_timers(&active_timers[QEMU_TIMER_VIRTUAL], 
                            qemu_get_clock(vm_clock));
            /* run dma transfers, if any */
            DMA_run();
B
bellard 已提交
2553
        }
2554

2555 2556 2557
        /* real time timers */
        qemu_run_timers(&active_timers[QEMU_TIMER_REALTIME], 
                        qemu_get_clock(rt_clock));
B
bellard 已提交
2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589
}

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
bellard 已提交
2590
    }
2591 2592
    cpu_disable_ticks();
    return ret;
B
bellard 已提交
2593 2594
}

2595 2596
void help(void)
{
B
bellard 已提交
2597
    printf("QEMU PC emulator version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n"
2598
           "usage: %s [options] [disk_image]\n"
2599
           "\n"
2600
           "'disk_image' is a raw hard image image for IDE hard disk 0\n"
B
bellard 已提交
2601
           "\n"
2602
           "Standard options:\n"
2603
           "-fda/-fdb file  use 'file' as floppy disk 0/1 image\n"
2604 2605
           "-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"
2606
           "-cdrom file     use 'file' as IDE cdrom image (cdrom is ide1 master)\n"
B
bellard 已提交
2607
           "-boot [a|c|d]   boot on floppy (a), hard disk (c) or CD-ROM (d)\n"
2608
	   "-snapshot       write to temporary files instead of disk image files\n"
B
bellard 已提交
2609
           "-m megs         set virtual RAM size to megs MB [default=%d]\n"
2610
           "-nographic      disable graphical output and redirect serial I/Os to console\n"
B
bellard 已提交
2611
#ifndef _WIN32
2612
	   "-k language     use keyboard layout (for example \"fr\" for French)\n"
B
bellard 已提交
2613
#endif
B
bellard 已提交
2614
           "-enable-audio   enable audio support\n"
B
bellard 已提交
2615
           "-localtime      set the real time clock to local time [default=utc]\n"
B
bellard 已提交
2616
           "-full-screen    start in full screen\n"
2617 2618
#ifdef TARGET_PPC
           "-prep           Simulate a PREP system (default is PowerMAC)\n"
2619
           "-g WxH[xDEPTH]  Set the initial VGA graphic mode\n"
2620
#endif
2621 2622
           "\n"
           "Network options:\n"
B
bellard 已提交
2623
           "-nics n         simulate 'n' network cards [default=1]\n"
B
bellard 已提交
2624
           "-macaddr addr   set the mac address of the first interface\n"
B
bellard 已提交
2625 2626 2627 2628
           "-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
bellard 已提交
2629
           "-tftp prefix    allow tftp access to files starting with prefix [-user-net]\n"
B
bellard 已提交
2630
#ifndef _WIN32
B
bellard 已提交
2631
           "-smb dir        allow SMB access to files in 'dir' [-user-net]\n"
B
bellard 已提交
2632
#endif
B
bellard 已提交
2633 2634
           "-redir [tcp|udp]:host-port:[guest-host]:guest-port\n"
           "                redirect TCP or UDP connections from host to guest [-user-net]\n"
B
bellard 已提交
2635 2636
#endif
           "-dummy-net      use dummy network stack\n"
2637
           "\n"
2638
           "Linux boot specific:\n"
2639 2640 2641
           "-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
bellard 已提交
2642
           "\n"
2643
           "Debug/Expert options:\n"
B
bellard 已提交
2644 2645
           "-monitor dev    redirect the monitor to char device 'dev'\n"
           "-serial dev     redirect the serial port to char device 'dev'\n"
B
bellard 已提交
2646
           "-pidfile file   Write PID to 'file'\n"
2647
           "-S              freeze CPU at startup (use 'c' to start execution)\n"
2648 2649
           "-s              wait gdb connection to port %d\n"
           "-p port         change gdb connection port\n"
2650
           "-d item1,...    output log to %s (use -d ? for a list of log items)\n"
B
bellard 已提交
2651 2652
           "-hdachs c,h,s[,t]  force hard disk 0 physical geometry and the optional BIOS\n"
           "                translation (t=none or lba) (usually qemu can guess them)\n"
2653
           "-L path         set the directory for the BIOS and VGA BIOS\n"
2654 2655 2656
#ifdef USE_CODE_COPY
           "-no-code-copy   disable code copy acceleration\n"
#endif
2657 2658
#ifdef TARGET_I386
           "-isa            simulate an ISA-only system (default is PCI system)\n"
2659 2660
           "-std-vga        simulate a standard VGA card with VESA Bochs Extensions\n"
           "                (default is CL-GD5446 PCI VGA)\n"
2661
#endif
B
bellard 已提交
2662
           "-loadvm file    start right away with a saved state (loadvm in monitor)\n"
2663
           "\n"
B
bellard 已提交
2664
           "During emulation, the following keys are useful:\n"
B
bellard 已提交
2665 2666 2667
           "ctrl-alt-f      toggle full screen\n"
           "ctrl-alt-n      switch to virtual console 'n'\n"
           "ctrl-alt        toggle mouse and keyboard grab\n"
B
bellard 已提交
2668 2669 2670
           "\n"
           "When using -nographic, press 'ctrl-a h' to get some help.\n"
           ,
2671 2672 2673 2674 2675
#ifdef CONFIG_SOFTMMU
           "qemu",
#else
           "qemu-fast",
#endif
B
bellard 已提交
2676 2677
           DEFAULT_RAM_SIZE,
           DEFAULT_NETWORK_SCRIPT,
2678 2679
           DEFAULT_GDBSTUB_PORT,
           "/tmp/qemu.log");
2680 2681 2682 2683 2684 2685
#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
2686 2687 2688
    exit(1);
}

2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711
#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
bellard 已提交
2712
    QEMU_OPTION_tftp,
B
bellard 已提交
2713
    QEMU_OPTION_smb,
B
bellard 已提交
2714
    QEMU_OPTION_redir,
2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727
    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
bellard 已提交
2728
    QEMU_OPTION_pci,
2729
    QEMU_OPTION_isa,
B
bellard 已提交
2730
    QEMU_OPTION_prep,
2731
    QEMU_OPTION_k,
B
bellard 已提交
2732
    QEMU_OPTION_localtime,
B
bellard 已提交
2733
    QEMU_OPTION_cirrusvga,
2734
    QEMU_OPTION_g,
2735
    QEMU_OPTION_std_vga,
B
bellard 已提交
2736 2737
    QEMU_OPTION_monitor,
    QEMU_OPTION_serial,
B
bellard 已提交
2738 2739
    QEMU_OPTION_loadvm,
    QEMU_OPTION_full_screen,
B
bellard 已提交
2740
    QEMU_OPTION_pidfile,
2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762
};

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 },
2763
    { "k", HAS_ARG, QEMU_OPTION_k },
2764 2765 2766 2767
    { "enable-audio", 0, QEMU_OPTION_enable_audio },

    { "nics", HAS_ARG, QEMU_OPTION_nics},
    { "macaddr", HAS_ARG, QEMU_OPTION_macaddr},
B
bellard 已提交
2768
    { "n", HAS_ARG, QEMU_OPTION_n },
2769
    { "tun-fd", HAS_ARG, QEMU_OPTION_tun_fd },
B
bellard 已提交
2770
#ifdef CONFIG_SLIRP
2771
    { "user-net", 0, QEMU_OPTION_user_net },
B
bellard 已提交
2772
    { "tftp", HAS_ARG, QEMU_OPTION_tftp },
B
bellard 已提交
2773
#ifndef _WIN32
B
bellard 已提交
2774
    { "smb", HAS_ARG, QEMU_OPTION_smb },
B
bellard 已提交
2775
#endif
B
bellard 已提交
2776
    { "redir", HAS_ARG, QEMU_OPTION_redir },
B
bellard 已提交
2777
#endif
2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790
    { "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
bellard 已提交
2791 2792
#ifdef TARGET_PPC
    { "prep", 0, QEMU_OPTION_prep },
2793
    { "g", 1, QEMU_OPTION_g },
B
bellard 已提交
2794
#endif
B
bellard 已提交
2795
    { "localtime", 0, QEMU_OPTION_localtime },
2796
    { "isa", 0, QEMU_OPTION_isa },
2797
    { "std-vga", 0, QEMU_OPTION_std_vga },
B
bellard 已提交
2798 2799
    { "monitor", 1, QEMU_OPTION_monitor },
    { "serial", 1, QEMU_OPTION_serial },
B
bellard 已提交
2800 2801
    { "loadvm", HAS_ARG, QEMU_OPTION_loadvm },
    { "full-screen", 0, QEMU_OPTION_full_screen },
B
bellard 已提交
2802 2803
    { "pidfile", HAS_ARG, QEMU_OPTION_pidfile },

B
bellard 已提交
2804 2805 2806
    /* temporary options */
    { "pci", 0, QEMU_OPTION_pci },
    { "cirrusvga", 0, QEMU_OPTION_cirrusvga },
2807
    { NULL },
B
bellard 已提交
2808 2809
};

2810 2811 2812 2813 2814 2815 2816 2817 2818
#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
bellard 已提交
2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855
/* 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
bellard 已提交
2856 2857 2858 2859
#define NET_IF_TUN   0
#define NET_IF_USER  1
#define NET_IF_DUMMY 2

2860 2861
int main(int argc, char **argv)
{
B
bellard 已提交
2862 2863 2864
#ifdef CONFIG_GDBSTUB
    int use_gdbstub, gdbstub_port;
#endif
2865
    int i, has_cdrom;
2866
    int snapshot, linux_boot;
2867
    CPUState *env;
B
bellard 已提交
2868
    const char *initrd_filename;
2869
    const char *hd_filename[MAX_DISKS], *fd_filename[MAX_FD];
2870
    const char *kernel_filename, *kernel_cmdline;
2871
    DisplayState *ds = &display_state;
B
bellard 已提交
2872
    int cyls, heads, secs, translation;
2873
    int start_emulation = 1;
B
bellard 已提交
2874
    uint8_t macaddr[6];
B
bellard 已提交
2875
    int net_if_type, nb_tun_fds, tun_fds[MAX_NICS];
2876 2877
    int optind;
    const char *r, *optarg;
B
bellard 已提交
2878 2879
    CharDriverState *monitor_hd;
    char monitor_device[128];
2880 2881
    char serial_devices[MAX_SERIAL_PORTS][128];
    int serial_device_index;
B
bellard 已提交
2882
    const char *loadvm = NULL;
2883
    
B
bellard 已提交
2884
#if !defined(CONFIG_SOFTMMU)
2885 2886
    /* we never want that malloc() uses mmap() */
    mallopt(M_MMAP_THRESHOLD, 4096 * 1024);
B
bellard 已提交
2887
#endif
B
bellard 已提交
2888
    initrd_filename = NULL;
2889 2890
    for(i = 0; i < MAX_FD; i++)
        fd_filename[i] = NULL;
B
bellard 已提交
2891 2892
    for(i = 0; i < MAX_DISKS; i++)
        hd_filename[i] = NULL;
B
bellard 已提交
2893
    ram_size = DEFAULT_RAM_SIZE * 1024 * 1024;
2894
    vga_ram_size = VGA_RAM_SIZE;
B
bellard 已提交
2895
    bios_size = BIOS_SIZE;
B
bellard 已提交
2896
    pstrcpy(network_script, sizeof(network_script), DEFAULT_NETWORK_SCRIPT);
B
bellard 已提交
2897
#ifdef CONFIG_GDBSTUB
B
bellard 已提交
2898 2899
    use_gdbstub = 0;
    gdbstub_port = DEFAULT_GDBSTUB_PORT;
B
bellard 已提交
2900
#endif
2901
    snapshot = 0;
2902 2903 2904
    nographic = 0;
    kernel_filename = NULL;
    kernel_cmdline = "";
2905 2906
    has_cdrom = 1;
    cyls = heads = secs = 0;
B
bellard 已提交
2907
    translation = BIOS_ATA_TRANSLATION_AUTO;
B
bellard 已提交
2908
    pstrcpy(monitor_device, sizeof(monitor_device), "vc");
2909

2910 2911 2912 2913 2914
    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
2915 2916
    nb_tun_fds = 0;
    net_if_type = -1;
2917
    nb_nics = 1;
B
bellard 已提交
2918 2919 2920 2921 2922 2923 2924
    /* 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
2925
    
2926
    optind = 1;
2927
    for(;;) {
2928
        if (optind >= argc)
2929
            break;
2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960
        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
2961 2962
                initrd_filename = optarg;
                break;
2963
            case QEMU_OPTION_hda:
B
bellard 已提交
2964 2965
                hd_filename[0] = optarg;
                break;
2966
            case QEMU_OPTION_hdb:
B
bellard 已提交
2967 2968
                hd_filename[1] = optarg;
                break;
2969
            case QEMU_OPTION_snapshot:
2970 2971
                snapshot = 1;
                break;
2972
            case QEMU_OPTION_hdachs:
2973 2974 2975 2976
                {
                    const char *p;
                    p = optarg;
                    cyls = strtol(p, (char **)&p, 0);
B
bellard 已提交
2977 2978
                    if (cyls < 1 || cyls > 16383)
                        goto chs_fail;
2979 2980 2981 2982
                    if (*p != ',')
                        goto chs_fail;
                    p++;
                    heads = strtol(p, (char **)&p, 0);
B
bellard 已提交
2983 2984
                    if (heads < 1 || heads > 16)
                        goto chs_fail;
2985 2986 2987 2988
                    if (*p != ',')
                        goto chs_fail;
                    p++;
                    secs = strtol(p, (char **)&p, 0);
B
bellard 已提交
2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001
                    if (secs < 1 || secs > 63)
                        goto chs_fail;
                    if (*p == ',') {
                        p++;
                        if (!strcmp(p, "none"))
                            translation = BIOS_ATA_TRANSLATION_NONE;
                        else if (!strcmp(p, "lba"))
                            translation = BIOS_ATA_TRANSLATION_LBA;
                        else if (!strcmp(p, "auto"))
                            translation = BIOS_ATA_TRANSLATION_AUTO;
                        else
                            goto chs_fail;
                    } else if (*p != '\0') {
3002
                    chs_fail:
B
bellard 已提交
3003 3004
                        fprintf(stderr, "qemu: invalid physical CHS format\n");
                        exit(1);
3005
                    }
3006 3007
                }
                break;
3008
            case QEMU_OPTION_nographic:
B
bellard 已提交
3009
                pstrcpy(monitor_device, sizeof(monitor_device), "stdio");
3010
                pstrcpy(serial_devices[0], sizeof(serial_devices[0]), "stdio");
3011 3012
                nographic = 1;
                break;
3013
            case QEMU_OPTION_kernel:
3014 3015
                kernel_filename = optarg;
                break;
3016
            case QEMU_OPTION_append:
3017
                kernel_cmdline = optarg;
3018
                break;
3019
	    case QEMU_OPTION_tun_fd:
3020 3021 3022
                {
                    const char *p;
                    int fd;
B
bellard 已提交
3023
                    net_if_type = NET_IF_TUN;
B
bellard 已提交
3024 3025 3026 3027
                    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);
3028 3029
                            exit(1);
                        }
B
bellard 已提交
3030
                        tun_fds[nb_tun_fds++] = fd;
3031 3032
                    }
                }
3033
		break;
3034
            case QEMU_OPTION_hdc:
3035
                hd_filename[2] = optarg;
3036
                has_cdrom = 0;
3037
                break;
3038
            case QEMU_OPTION_hdd:
3039 3040
                hd_filename[3] = optarg;
                break;
3041
            case QEMU_OPTION_cdrom:
3042
                hd_filename[2] = optarg;
3043
                has_cdrom = 1;
3044
                break;
3045
            case QEMU_OPTION_boot:
3046
                boot_device = optarg[0];
B
bellard 已提交
3047
                if (boot_device != 'a' && 
3048
                    boot_device != 'c' && boot_device != 'd') {
3049 3050 3051 3052
                    fprintf(stderr, "qemu: invalid boot device '%c'\n", boot_device);
                    exit(1);
                }
                break;
3053
            case QEMU_OPTION_fda:
3054 3055
                fd_filename[0] = optarg;
                break;
3056
            case QEMU_OPTION_fdb:
3057 3058
                fd_filename[1] = optarg;
                break;
3059
            case QEMU_OPTION_no_code_copy:
3060 3061
                code_copy_enabled = 0;
                break;
3062
            case QEMU_OPTION_nics:
3063
                nb_nics = atoi(optarg);
B
bellard 已提交
3064
                if (nb_nics < 0 || nb_nics > MAX_NICS) {
3065 3066 3067 3068
                    fprintf(stderr, "qemu: invalid number of network interfaces\n");
                    exit(1);
                }
                break;
3069
            case QEMU_OPTION_macaddr:
B
bellard 已提交
3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089
                {
                    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
3090 3091 3092
#ifdef CONFIG_SLIRP
            case QEMU_OPTION_tftp:
		tftp_prefix = optarg;
B
bellard 已提交
3093
                break;
B
bellard 已提交
3094
#ifndef _WIN32
B
bellard 已提交
3095 3096 3097
            case QEMU_OPTION_smb:
		net_slirp_smb(optarg);
                break;
B
bellard 已提交
3098
#endif
3099
            case QEMU_OPTION_user_net:
B
bellard 已提交
3100 3101
                net_if_type = NET_IF_USER;
                break;
B
bellard 已提交
3102 3103 3104
            case QEMU_OPTION_redir:
                net_slirp_redir(optarg);                
                break;
B
bellard 已提交
3105
#endif
3106
            case QEMU_OPTION_dummy_net:
B
bellard 已提交
3107 3108
                net_if_type = NET_IF_DUMMY;
                break;
3109
            case QEMU_OPTION_enable_audio:
B
bellard 已提交
3110 3111
                audio_enabled = 1;
                break;
3112
            case QEMU_OPTION_h:
3113
                help();
3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132
                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");
3133 3134 3135 3136
                    for(item = cpu_log_items; item->mask != 0; item++) {
                        printf("%-10s %s\n", item->name, item->help);
                    }
                    exit(1);
3137 3138
                    }
                    cpu_set_log(mask);
3139
                }
3140 3141 3142 3143
                break;
            case QEMU_OPTION_n:
                pstrcpy(network_script, sizeof(network_script), optarg);
                break;
B
bellard 已提交
3144
#ifdef CONFIG_GDBSTUB
3145 3146 3147 3148 3149 3150
            case QEMU_OPTION_s:
                use_gdbstub = 1;
                break;
            case QEMU_OPTION_p:
                gdbstub_port = atoi(optarg);
                break;
B
bellard 已提交
3151
#endif
3152 3153 3154 3155 3156 3157
            case QEMU_OPTION_L:
                bios_dir = optarg;
                break;
            case QEMU_OPTION_S:
                start_emulation = 0;
                break;
B
bellard 已提交
3158 3159 3160
            case QEMU_OPTION_pci:
                pci_enabled = 1;
                break;
3161 3162 3163
            case QEMU_OPTION_isa:
                pci_enabled = 0;
                break;
B
bellard 已提交
3164 3165 3166
            case QEMU_OPTION_prep:
                prep_enabled = 1;
                break;
3167 3168 3169
	    case QEMU_OPTION_k:
		keyboard_layout = optarg;
		break;
B
bellard 已提交
3170 3171 3172
            case QEMU_OPTION_localtime:
                rtc_utc = 0;
                break;
B
bellard 已提交
3173 3174 3175
            case QEMU_OPTION_cirrusvga:
                cirrus_vga_enabled = 1;
                break;
3176 3177 3178
            case QEMU_OPTION_std_vga:
                cirrus_vga_enabled = 0;
                break;
3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212
            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
3213 3214 3215 3216
            case QEMU_OPTION_monitor:
                pstrcpy(monitor_device, sizeof(monitor_device), optarg);
                break;
            case QEMU_OPTION_serial:
3217 3218 3219 3220 3221 3222 3223
                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
3224
                break;
B
bellard 已提交
3225 3226 3227 3228 3229 3230
	    case QEMU_OPTION_loadvm:
		loadvm = optarg;
		break;
            case QEMU_OPTION_full_screen:
                full_screen = 1;
                break;
B
bellard 已提交
3231 3232 3233
            case QEMU_OPTION_pidfile:
                create_pidfile(optarg);
                break;
3234
            }
3235 3236
        }
    }
3237

3238
    linux_boot = (kernel_filename != NULL);
3239
        
3240 3241
    if (!linux_boot && hd_filename[0] == '\0' && hd_filename[2] == '\0' &&
        fd_filename[0] == '\0')
3242
        help();
3243 3244
    
    /* boot to cd by default if no hard disk */
B
bellard 已提交
3245 3246 3247 3248 3249 3250
    if (hd_filename[0] == '\0' && boot_device == 'c') {
        if (fd_filename[0] != '\0')
            boot_device = 'a';
        else
            boot_device = 'd';
    }
3251

3252 3253 3254 3255 3256 3257 3258
#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
bellard 已提交
3259
    setvbuf(stdout, NULL, _IOLBF, 0);
3260
#endif
3261

3262
    /* init host network redirectors */
B
bellard 已提交
3263 3264 3265 3266 3267 3268 3269 3270 3271 3272
    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
bellard 已提交
3273
        NetDriverState *nd = &nd_table[i];
B
bellard 已提交
3274
        nd->index = i;
B
bellard 已提交
3275 3276 3277 3278 3279 3280 3281
        /* 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
bellard 已提交
3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292
        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 {
3293 3294
                if (net_tun_init(nd) < 0)
                    net_dummy_init(nd);
B
bellard 已提交
3295 3296 3297 3298 3299 3300 3301 3302
            }
            break;
#endif
        case NET_IF_DUMMY:
        default:
            net_dummy_init(nd);
            break;
        }
B
bellard 已提交
3303
    }
B
bellard 已提交
3304

3305
    /* init the memory */
B
bellard 已提交
3306
    phys_ram_size = ram_size + vga_ram_size + bios_size;
B
bellard 已提交
3307 3308

#ifdef CONFIG_SOFTMMU
B
bellard 已提交
3309
#ifdef _BSD
3310 3311
    /* mallocs are always aligned on BSD. valloc is better for correctness */
    phys_ram_base = valloc(phys_ram_size);
B
bellard 已提交
3312
#else
3313
    phys_ram_base = memalign(TARGET_PAGE_SIZE, phys_ram_size);
B
bellard 已提交
3314
#endif
B
bellard 已提交
3315 3316
    if (!phys_ram_base) {
        fprintf(stderr, "Could not allocate physical memory\n");
3317 3318
        exit(1);
    }
B
bellard 已提交
3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339
#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);
        }
3340
        ftruncate(phys_ram_fd, phys_ram_size);
B
bellard 已提交
3341
        unlink(phys_ram_file);
3342 3343
        phys_ram_base = mmap(get_mmap_addr(phys_ram_size), 
                             phys_ram_size, 
B
bellard 已提交
3344 3345 3346 3347 3348 3349 3350 3351
                             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
3352

3353
    /* we always create the cdrom drive, even if no disk is there */
B
bellard 已提交
3354
    bdrv_init();
3355 3356 3357 3358 3359
    if (has_cdrom) {
        bs_table[2] = bdrv_new("cdrom");
        bdrv_set_type_hint(bs_table[2], BDRV_TYPE_CDROM);
    }

3360 3361 3362 3363
    /* open the virtual block devices */
    for(i = 0; i < MAX_DISKS; i++) {
        if (hd_filename[i]) {
            if (!bs_table[i]) {
3364 3365 3366 3367 3368
                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
bellard 已提交
3369
                fprintf(stderr, "qemu: could not open hard disk image '%s'\n",
3370 3371 3372
                        hd_filename[i]);
                exit(1);
            }
B
bellard 已提交
3373
            if (i == 0 && cyls != 0) {
3374
                bdrv_set_geometry_hint(bs_table[i], cyls, heads, secs);
B
bellard 已提交
3375 3376
                bdrv_set_translation_hint(bs_table[i], translation);
            }
3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393
        }
    }

    /* 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
bellard 已提交
3394
                    fprintf(stderr, "qemu: could not open floppy disk image '%s'\n",
3395 3396 3397 3398
                            fd_filename[i]);
                    exit(1);
                }
            }
3399 3400 3401
        }
    }

3402 3403 3404 3405 3406
    /* init CPU state */
    env = cpu_init();
    global_env = env;
    cpu_single_env = env;

3407
    register_savevm("timer", 0, 1, timer_save, timer_load, env);
3408
    register_savevm("cpu", 0, 2, cpu_save, cpu_load, env);
3409
    register_savevm("ram", 0, 1, ram_save, ram_load, NULL);
3410
    qemu_register_reset(main_cpu_reset, global_env);
3411

3412
    init_ioports();
B
bellard 已提交
3413
    cpu_calibrate_ticks();
3414

3415
    /* terminal init */
3416
    if (nographic) {
3417 3418 3419
        dumb_display_init(ds);
    } else {
#ifdef CONFIG_SDL
B
bellard 已提交
3420
        sdl_display_init(ds, full_screen);
3421 3422 3423 3424
#else
        dumb_display_init(ds);
#endif
    }
3425

B
bellard 已提交
3426 3427 3428 3429 3430 3431 3432 3433 3434
    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);

3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445
    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
3446 3447
    }

3448
    /* setup cpu signal handlers for MMU / self modifying code handling */
3449
#if !defined(CONFIG_SOFTMMU)
3450
    
3451 3452 3453
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
    {
        stack_t stk;
B
bellard 已提交
3454
        signal_stack = memalign(16, SIGNAL_STACK_SIZE);
3455 3456 3457 3458 3459 3460 3461 3462 3463 3464
        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
3465 3466
    {
        struct sigaction act;
3467
        
3468 3469
        sigfillset(&act.sa_mask);
        act.sa_flags = SA_SIGINFO;
3470
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
3471
        act.sa_flags |= SA_ONSTACK;
3472
#endif
3473 3474 3475
        act.sa_sigaction = host_segv_handler;
        sigaction(SIGSEGV, &act, NULL);
        sigaction(SIGBUS, &act, NULL);
3476
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
3477
        sigaction(SIGFPE, &act, NULL);
3478
#endif
3479
    }
3480
#endif
3481

B
bellard 已提交
3482
#ifndef _WIN32
3483 3484 3485 3486 3487 3488 3489
    {
        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
3490
#endif
B
bellard 已提交
3491 3492 3493 3494 3495 3496 3497
    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)
3498 3499 3500
    ppc_init(ram_size, vga_ram_size, boot_device,
	     ds, fd_filename, snapshot,
	     kernel_filename, kernel_cmdline, initrd_filename);
3501 3502 3503 3504
#elif defined(TARGET_SPARC)
    sun4m_init(ram_size, vga_ram_size, boot_device,
            ds, fd_filename, snapshot,
            kernel_filename, kernel_cmdline, initrd_filename);
B
bellard 已提交
3505 3506
#endif

3507 3508
    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
3509

B
bellard 已提交
3510
#ifdef CONFIG_GDBSTUB
B
bellard 已提交
3511
    if (use_gdbstub) {
3512 3513 3514 3515 3516 3517 3518
        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
3519 3520
    } else 
#endif
B
bellard 已提交
3521 3522 3523
    if (loadvm)
        qemu_loadvm(loadvm);

B
bellard 已提交
3524
    {
B
bellard 已提交
3525 3526 3527 3528 3529
        /* XXX: simplify init */
        read_passwords();
        if (start_emulation) {
            vm_start();
        }
3530
    }
3531
    main_loop();
B
bellard 已提交
3532
    quit_timers();
3533 3534
    return 0;
}