xemu-project/xemu
1
0
Fork 0
mirror of https://github.com/xemu-project/xemu.git synced 2024-11-30 23:10:38 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity
80cabfad16
xemu/vl.c
bellard 80cabfad16 separated more devices from emulator 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@656 c046a42c-6fe2-441c-8c8c-71466251a162
2004-03-14 12:20:30 +00:00

1252 lines
33 KiB
C
Raw Blame History

/*
* QEMU System Emulator
*
* Copyright (c) 2003-2004 Fabrice Bellard
*
* 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.
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <ctype.h>
#include <getopt.h>
#include <inttypes.h>
#include <unistd.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <signal.h>
#include <time.h>
#include <sys/time.h>
#include <malloc.h>
#include <termios.h>
#include <sys/poll.h>
#include <errno.h>
#include <sys/wait.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <linux/if.h>
#include <linux/if_tun.h>
#include "disas.h"
#include "thunk.h"
#include "vl.h"
#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
//#define DEBUG_UNUSED_IOPORT
#if !defined(CONFIG_SOFTMMU)
#define PHYS_RAM_MAX_SIZE (256 * 1024 * 1024)
#else
#define PHYS_RAM_MAX_SIZE (2047 * 1024 * 1024)
#endif
#if defined (TARGET_I386)
#elif defined (TARGET_PPC)
//#define USE_OPEN_FIRMWARE
#if !defined (USE_OPEN_FIRMWARE)
#define KERNEL_LOAD_ADDR 0x01000000
#define KERNEL_STACK_ADDR 0x01200000
#else
#define KERNEL_LOAD_ADDR 0x00000000
#define KERNEL_STACK_ADDR 0x00400000
#endif
#endif
#define GUI_REFRESH_INTERVAL 30
/* XXX: use a two level table to limit memory usage */
#define MAX_IOPORTS 65536
const char *bios_dir = CONFIG_QEMU_SHAREDIR;
char phys_ram_file[1024];
CPUState *global_env;
CPUState *cpu_single_env;
IOPortReadFunc *ioport_read_table[3][MAX_IOPORTS];
IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS];
BlockDriverState *bs_table[MAX_DISKS], *fd_table[MAX_FD];
int vga_ram_size;
static DisplayState display_state;
int nographic;
int term_inited;
int64_t ticks_per_sec;
int boot_device = 'c';
static int ram_size;
static char network_script[1024];
int pit_min_timer_count = 0;
/***********************************************************/
/* x86 io ports */
uint32_t default_ioport_readb(CPUState *env, uint32_t address)
{
#ifdef DEBUG_UNUSED_IOPORT
fprintf(stderr, "inb: port=0x%04x\n", address);
#endif
return 0xff;
}
void default_ioport_writeb(CPUState *env, uint32_t address, uint32_t data)
{
#ifdef DEBUG_UNUSED_IOPORT
fprintf(stderr, "outb: port=0x%04x data=0x%02x\n", address, data);
#endif
}
/* default is to make two byte accesses */
uint32_t default_ioport_readw(CPUState *env, uint32_t address)
{
uint32_t data;
data = ioport_read_table[0][address & (MAX_IOPORTS - 1)](env, address);
data |= ioport_read_table[0][(address + 1) & (MAX_IOPORTS - 1)](env, address + 1) << 8;
return data;
}
void default_ioport_writew(CPUState *env, uint32_t address, uint32_t data)
{
ioport_write_table[0][address & (MAX_IOPORTS - 1)](env, address, data & 0xff);
ioport_write_table[0][(address + 1) & (MAX_IOPORTS - 1)](env, address + 1, (data >> 8) & 0xff);
}
uint32_t default_ioport_readl(CPUState *env, uint32_t address)
{
#ifdef DEBUG_UNUSED_IOPORT
fprintf(stderr, "inl: port=0x%04x\n", address);
#endif
return 0xffffffff;
}
void default_ioport_writel(CPUState *env, uint32_t address, uint32_t data)
{
#ifdef DEBUG_UNUSED_IOPORT
fprintf(stderr, "outl: port=0x%04x data=0x%02x\n", address, data);
#endif
}
void init_ioports(void)
{
int i;
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;
}
}
/* size is the word size in byte */
int register_ioport_read(int start, int length, IOPortReadFunc *func, int size)
{
int i, bsize;
if (size == 1)
bsize = 0;
else if (size == 2)
bsize = 1;
else if (size == 4)
bsize = 2;
else
return -1;
for(i = start; i < start + length; i += size)
ioport_read_table[bsize][i] = func;
return 0;
}
/* size is the word size in byte */
int register_ioport_write(int start, int length, IOPortWriteFunc *func, int size)
{
int i, bsize;
if (size == 1)
bsize = 0;
else if (size == 2)
bsize = 1;
else if (size == 4)
bsize = 2;
else
return -1;
for(i = start; i < start + length; i += size)
ioport_write_table[bsize][i] = func;
return 0;
}
void pstrcpy(char *buf, int buf_size, const char *str)
{
int c;
char *q = buf;
if (buf_size <= 0)
return;
for(;;) {
c = *str++;
if (c == 0 || q >= buf + buf_size - 1)
break;
*q++ = c;
}
*q = '\0';
}
/* strcat and truncate. */
char *pstrcat(char *buf, int buf_size, const char *s)
{
int len;
len = strlen(buf);
if (len < buf_size)
pstrcpy(buf + len, buf_size - len, s);
return buf;
}
/* return the size or -1 if error */
int load_image(const char *filename, uint8_t *addr)
{
int fd, size;
fd = open(filename, O_RDONLY);
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;
}
void cpu_outb(CPUState *env, int addr, int val)
{
ioport_write_table[0][addr & (MAX_IOPORTS - 1)](env, addr, val);
}
void cpu_outw(CPUState *env, int addr, int val)
{
ioport_write_table[1][addr & (MAX_IOPORTS - 1)](env, addr, val);
}
void cpu_outl(CPUState *env, int addr, int val)
{
ioport_write_table[2][addr & (MAX_IOPORTS - 1)](env, addr, val);
}
int cpu_inb(CPUState *env, int addr)
{
return ioport_read_table[0][addr & (MAX_IOPORTS - 1)](env, addr);
}
int cpu_inw(CPUState *env, int addr)
{
return ioport_read_table[1][addr & (MAX_IOPORTS - 1)](env, addr);
}
int cpu_inl(CPUState *env, int addr)
{
return ioport_read_table[2][addr & (MAX_IOPORTS - 1)](env, addr);
}
/***********************************************************/
void hw_error(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fprintf(stderr, "qemu: hardware error: ");
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
#ifdef TARGET_I386
cpu_x86_dump_state(global_env, stderr, X86_DUMP_FPU | X86_DUMP_CCOP);
#else
cpu_dump_state(global_env, stderr, 0);
#endif
va_end(ap);
abort();
}
#if defined(__powerpc__)
static inline uint32_t get_tbl(void)
{
uint32_t tbl;
asm volatile("mftb %0" : "=r" (tbl));
return tbl;
}
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)
{
int64_t val;
asm("rdtsc" : "=A" (val));
return val;
}
#else
#error unsupported CPU
#endif
static int64_t cpu_ticks_offset;
static int64_t cpu_ticks_last;
int64_t cpu_get_ticks(void)
{
return cpu_get_real_ticks() + cpu_ticks_offset;
}
/* enable cpu_get_ticks() */
void cpu_enable_ticks(void)
{
cpu_ticks_offset = cpu_ticks_last - cpu_get_real_ticks();
}
/* disable cpu_get_ticks() : the clock is stopped. You must not call
cpu_get_ticks() after that. */
void cpu_disable_ticks(void)
{
cpu_ticks_last = cpu_get_ticks();
}
int64_t get_clock(void)
{
struct timeval tv;
gettimeofday(&tv, NULL);
return tv.tv_sec * 1000000LL + tv.tv_usec;
}
void cpu_calibrate_ticks(void)
{
int64_t usec, ticks;
usec = get_clock();
ticks = cpu_get_ticks();
usleep(50 * 1000);
usec = get_clock() - usec;
ticks = cpu_get_ticks() - ticks;
ticks_per_sec = (ticks * 1000000LL + (usec >> 1)) / usec;
}
/* compute with 96 bit intermediate result: (a*b)/c */
uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
{
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;
}
#define TERM_ESCAPE 0x01 /* ctrl-a is used for escape */
static int term_got_escape, term_command;
static unsigned char term_cmd_buf[128];
typedef struct term_cmd_t {
const unsigned char *name;
void (*handler)(unsigned char *params);
} term_cmd_t;
static void do_change_cdrom (unsigned char *params);
static void do_change_fd0 (unsigned char *params);
static void do_change_fd1 (unsigned char *params);
static term_cmd_t term_cmds[] = {
{ "changecd", &do_change_cdrom, },
{ "changefd0", &do_change_fd0, },
{ "changefd1", &do_change_fd1, },
{ NULL, NULL, },
};
void term_print_help(void)
{
printf("\n"
"C-a h print this help\n"
"C-a x exit emulatior\n"
"C-a d switch on/off debug log\n"
"C-a s save disk data back to file (if -snapshot)\n"
"C-a b send break (magic sysrq)\n"
"C-a c send qemu internal command\n"
"C-a C-a send C-a\n"
);
}
static void do_change_cdrom (unsigned char *params)
{
/* Dunno how to do it... */
}
static void do_change_fd (int fd, unsigned char *params)
{
unsigned char *name_start, *name_end, *ros;
int ro;
for (name_start = params;
isspace(*name_start); name_start++)
continue;
if (*name_start == '\0')
return;
for (name_end = name_start;
!isspace(*name_end) && *name_end != '\0'; name_end++)
continue;
for (ros = name_end + 1; isspace(*ros); ros++)
continue;
if (ros[0] == 'r' && ros[1] == 'o')
ro = 1;
else
ro = 0;
*name_end = '\0';
printf("Change fd %d to %s (%s)\n", fd, name_start, params);
fdctrl_disk_change(fd, name_start, ro);
}
static void do_change_fd0 (unsigned char *params)
{
do_change_fd(0, params);
}
static void do_change_fd1 (unsigned char *params)
{
do_change_fd(1, params);
}
static void term_treat_command(void)
{
unsigned char *cmd_start, *cmd_end;
int i;
for (cmd_start = term_cmd_buf; isspace(*cmd_start); cmd_start++)
continue;
for (cmd_end = cmd_start;
!isspace(*cmd_end) && *cmd_end != '\0'; cmd_end++)
continue;
for (i = 0; term_cmds[i].name != NULL; i++) {
if (strlen(term_cmds[i].name) == (cmd_end - cmd_start) &&
memcmp(term_cmds[i].name, cmd_start, cmd_end - cmd_start) == 0) {
(*term_cmds[i].handler)(cmd_end + 1);
return;
}
}
*cmd_end = '\0';
printf("Unknown term command: %s\n", cmd_start);
}
extern FILE *logfile;
/* called when a char is received */
void term_received_byte(int ch)
{
if (term_command) {
if (ch == '\n' || ch == '\r' || term_command == 127) {
printf("\n");
term_treat_command();
term_command = 0;
} else {
if (ch == 0x7F || ch == 0x08) {
if (term_command > 1) {
term_cmd_buf[--term_command - 1] = '\0';
printf("\r "
" ");
printf("\r> %s", term_cmd_buf);
}
} else if (ch > 0x1f) {
term_cmd_buf[term_command++ - 1] = ch;
term_cmd_buf[term_command - 1] = '\0';
printf("\r> %s", term_cmd_buf);
}
fflush(stdout);
}
} else 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':
serial_receive_break();
break;
case 'c':
printf("> ");
fflush(stdout);
term_command = 1;
break;
case 'd':
cpu_set_log(CPU_LOG_ALL);
break;
case TERM_ESCAPE:
goto send_char;
}
} else if (ch == TERM_ESCAPE) {
term_got_escape = 1;
} else {
send_char:
serial_receive_byte(ch);
}
}
/***********************************************************/
/* Linux network device redirector */
int net_init(void)
{
struct ifreq ifr;
int fd, ret, pid, status;
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;
}
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);
fcntl(fd, F_SETFL, O_NONBLOCK);
net_fd = fd;
/* try to launch network init script */
pid = fork();
if (pid >= 0) {
if (pid == 0) {
execl(network_script, network_script, ifr.ifr_name, NULL);
exit(1);
}
while (waitpid(pid, &status, 0) != pid);
if (!WIFEXITED(status) ||
WEXITSTATUS(status) != 0) {
fprintf(stderr, "%s: could not launch network script for '%s'\n",
network_script, ifr.ifr_name);
}
}
return 0;
}
void net_send_packet(int net_fd, const uint8_t *buf, int size)
{
#ifdef DEBUG_NE2000
printf("NE2000: sending packet size=%d\n", size);
#endif
write(net_fd, buf, size);
}
/***********************************************************/
/* dumb display */
/* init terminal so that we can grab keys */
static struct termios oldtty;
static void term_exit(void)
{
tcsetattr (0, TCSANOW, &oldtty);
}
static void term_init(void)
{
struct termios tty;
tcgetattr (0, &tty);
oldtty = tty;
tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
|INLCR|IGNCR|ICRNL|IXON);
tty.c_oflag |= OPOST;
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);
}
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;
}
#if !defined(CONFIG_SOFTMMU)
/***********************************************************/
/* cpu signal handler */
static void host_segv_handler(int host_signum, siginfo_t *info,
void *puc)
{
if (cpu_signal_handler(host_signum, info, puc))
return;
term_exit();
abort();
}
#endif
static int timer_irq_pending;
static int timer_irq_count;
static int timer_ms;
static int gui_refresh_pending, gui_refresh_count;
static void host_alarm_handler(int host_signum, siginfo_t *info,
void *puc)
{
/* NOTE: since usually the OS asks a 100 Hz clock, there can be
some drift between cpu_get_ticks() and the interrupt time. So
we queue some interrupts to avoid missing some */
timer_irq_count += pit_get_out_edges(&pit_channels[0]);
if (timer_irq_count) {
if (timer_irq_count > 2)
timer_irq_count = 2;
timer_irq_count--;
timer_irq_pending = 1;
}
gui_refresh_count += timer_ms;
if (gui_refresh_count >= GUI_REFRESH_INTERVAL) {
gui_refresh_count = 0;
gui_refresh_pending = 1;
}
if (gui_refresh_pending || timer_irq_pending) {
/* just exit from the cpu to have a chance to handle timers */
cpu_interrupt(global_env, CPU_INTERRUPT_EXIT);
}
}
/* main execution loop */
CPUState *cpu_gdbstub_get_env(void *opaque)
{
return global_env;
}
int main_loop(void *opaque)
{
struct pollfd ufds[3], *pf, *serial_ufd, *gdb_ufd;
#if defined (TARGET_I386)
struct pollfd *net_ufd;
#endif
int ret, n, timeout, serial_ok;
uint8_t ch;
CPUState *env = global_env;
if (!term_inited) {
/* initialize terminal only there so that the user has a
chance to stop QEMU with Ctrl-C before the gdb connection
is launched */
term_inited = 1;
term_init();
}
serial_ok = 1;
cpu_enable_ticks();
for(;;) {
#if defined (DO_TB_FLUSH)
tb_flush();
#endif
ret = cpu_exec(env);
if (reset_requested) {
ret = EXCP_INTERRUPT;
break;
}
if (ret == EXCP_DEBUG) {
ret = EXCP_DEBUG;
break;
}
/* if hlt instruction, we wait until the next IRQ */
if (ret == EXCP_HLT)
timeout = 10;
else
timeout = 0;
/* poll any events */
serial_ufd = NULL;
pf = ufds;
if (serial_ok && serial_can_receive()) {
serial_ufd = pf;
pf->fd = 0;
pf->events = POLLIN;
pf++;
}
#if defined (TARGET_I386)
net_ufd = NULL;
if (net_fd > 0 && ne2000_can_receive()) {
net_ufd = pf;
pf->fd = net_fd;
pf->events = POLLIN;
pf++;
}
#endif
gdb_ufd = NULL;
if (gdbstub_fd > 0) {
gdb_ufd = pf;
pf->fd = gdbstub_fd;
pf->events = POLLIN;
pf++;
}
ret = poll(ufds, pf - ufds, timeout);
if (ret > 0) {
if (serial_ufd && (serial_ufd->revents & POLLIN)) {
n = read(0, &ch, 1);
if (n == 1) {
term_received_byte(ch);
} else {
/* Closed, stop polling. */
serial_ok = 0;
}
}
#if defined (TARGET_I386)
if (net_ufd && (net_ufd->revents & POLLIN)) {
uint8_t buf[MAX_ETH_FRAME_SIZE];
n = read(net_fd, buf, MAX_ETH_FRAME_SIZE);
if (n > 0) {
if (n < 60) {
memset(buf + n, 0, 60 - n);
n = 60;
}
ne2000_receive(buf, n);
}
}
#endif
if (gdb_ufd && (gdb_ufd->revents & POLLIN)) {
uint8_t buf[1];
/* stop emulation if requested by gdb */
n = read(gdbstub_fd, buf, 1);
if (n == 1) {
ret = EXCP_INTERRUPT;
break;
}
}
}
/* timer IRQ */
if (timer_irq_pending) {
#if defined (TARGET_I386)
pic_set_irq(0, 1);
pic_set_irq(0, 0);
timer_irq_pending = 0;
rtc_timer();
#endif
}
/* XXX: add explicit timer */
SB16_run();
/* run dma transfers, if any */
DMA_run();
/* VGA */
if (gui_refresh_pending) {
display_state.dpy_refresh(&display_state);
gui_refresh_pending = 0;
}
}
cpu_disable_ticks();
return ret;
}
void help(void)
{
printf("QEMU PC emulator version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
"usage: %s [options] [disk_image]\n"
"\n"
"'disk_image' is a raw hard image image for IDE hard disk 0\n"
"\n"
"Standard options:\n"
"-fda/-fdb file use 'file' as floppy disk 0/1 image\n"
"-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"
"-cdrom file use 'file' as IDE cdrom 2 image\n"
"-boot [a|b|c|d] boot on floppy (a, b), hard disk (c) or CD-ROM (d)\n"
"-snapshot write to temporary files instead of disk image files\n"
"-m megs set virtual RAM size to megs MB\n"
"-n script set network init script [default=%s]\n"
"-tun-fd fd this fd talks to tap/tun, use it.\n"
"-nographic disable graphical output\n"
"\n"
"Linux boot specific (does not require PC BIOS):\n"
"-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"
"\n"
"Debug/Expert options:\n"
"-s wait gdb connection to port %d\n"
"-p port change gdb connection port\n"
"-d output log to %s\n"
"-hdachs c,h,s force hard disk 0 geometry (usually qemu can guess it)\n"
"-L path set the directory for the BIOS and VGA BIOS\n"
#ifdef USE_CODE_COPY
"-no-code-copy disable code copy acceleration\n"
#endif
"\n"
"During emulation, use C-a h to get terminal commands:\n",
#ifdef CONFIG_SOFTMMU
"qemu",
#else
"qemu-fast",
#endif
DEFAULT_NETWORK_SCRIPT,
DEFAULT_GDBSTUB_PORT,
"/tmp/qemu.log");
term_print_help();
#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
exit(1);
}
struct option long_options[] = {
{ "initrd", 1, NULL, 0, },
{ "hda", 1, NULL, 0, },
{ "hdb", 1, NULL, 0, },
{ "snapshot", 0, NULL, 0, },
{ "hdachs", 1, NULL, 0, },
{ "nographic", 0, NULL, 0, },
{ "kernel", 1, NULL, 0, },
{ "append", 1, NULL, 0, },
{ "tun-fd", 1, NULL, 0, },
{ "hdc", 1, NULL, 0, },
{ "hdd", 1, NULL, 0, },
{ "cdrom", 1, NULL, 0, },
{ "boot", 1, NULL, 0, },
{ "fda", 1, NULL, 0, },
{ "fdb", 1, NULL, 0, },
{ "no-code-copy", 0, NULL, 0},
{ NULL, 0, NULL, 0 },
};
#ifdef CONFIG_SDL
/* SDL use the pthreads and they modify sigaction. We don't
want that. */
#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
extern void __libc_sigaction();
#define sigaction(sig, act, oact) __libc_sigaction(sig, act, oact)
#else
extern void __sigaction();
#define sigaction(sig, act, oact) __sigaction(sig, act, oact)
#endif
#endif /* CONFIG_SDL */
#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
int main(int argc, char **argv)
{
int c, i, use_gdbstub, gdbstub_port, long_index;
int snapshot, linux_boot;
struct sigaction act;
struct itimerval itv;
CPUState *env;
const char *initrd_filename;
const char *hd_filename[MAX_DISKS], *fd_filename[MAX_FD];
const char *kernel_filename, *kernel_cmdline;
DisplayState *ds = &display_state;
/* we never want that malloc() uses mmap() */
mallopt(M_MMAP_THRESHOLD, 4096 * 1024);
initrd_filename = NULL;
for(i = 0; i < MAX_FD; i++)
fd_filename[i] = NULL;
for(i = 0; i < MAX_DISKS; i++)
hd_filename[i] = NULL;
ram_size = 32 * 1024 * 1024;
vga_ram_size = VGA_RAM_SIZE;
#if defined (TARGET_I386)
pstrcpy(network_script, sizeof(network_script), DEFAULT_NETWORK_SCRIPT);
#endif
use_gdbstub = 0;
gdbstub_port = DEFAULT_GDBSTUB_PORT;
snapshot = 0;
nographic = 0;
kernel_filename = NULL;
kernel_cmdline = "";
for(;;) {
c = getopt_long_only(argc, argv, "hm:dn:sp:L:", long_options, &long_index);
if (c == -1)
break;
switch(c) {
case 0:
switch(long_index) {
case 0:
initrd_filename = optarg;
break;
case 1:
hd_filename[0] = optarg;
break;
case 2:
hd_filename[1] = optarg;
break;
case 3:
snapshot = 1;
break;
case 4:
{
int cyls, heads, secs;
const char *p;
p = optarg;
cyls = strtol(p, (char **)&p, 0);
if (*p != ',')
goto chs_fail;
p++;
heads = strtol(p, (char **)&p, 0);
if (*p != ',')
goto chs_fail;
p++;
secs = strtol(p, (char **)&p, 0);
if (*p != '\0')
goto chs_fail;
ide_set_geometry(0, cyls, heads, secs);
chs_fail: ;
}
break;
case 5:
nographic = 1;
break;
case 6:
kernel_filename = optarg;
break;
case 7:
kernel_cmdline = optarg;
break;
#if defined (TARGET_I386)
case 8:
net_fd = atoi(optarg);
break;
#endif
case 9:
hd_filename[2] = optarg;
break;
case 10:
hd_filename[3] = optarg;
break;
case 11:
hd_filename[2] = optarg;
ide_set_cdrom(2, 1);
break;
case 12:
boot_device = optarg[0];
if (boot_device != 'a' && boot_device != 'b' &&
boot_device != 'c' && boot_device != 'd') {
fprintf(stderr, "qemu: invalid boot device '%c'\n", boot_device);
exit(1);
}
break;
case 13:
fd_filename[0] = optarg;
break;
case 14:
fd_filename[1] = optarg;
break;
case 15:
code_copy_enabled = 0;
break;
}
break;
case 'h':
help();
break;
case '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 'd':
cpu_set_log(CPU_LOG_ALL);
break;
#if defined (TARGET_I386)
case 'n':
pstrcpy(network_script, sizeof(network_script), optarg);
break;
#endif
case 's':
use_gdbstub = 1;
break;
case 'p':
gdbstub_port = atoi(optarg);
break;
case 'L':
bios_dir = optarg;
break;
}
}
if (optind < argc) {
hd_filename[0] = argv[optind++];
}
linux_boot = (kernel_filename != NULL);
if (!linux_boot && hd_filename[0] == '\0' && hd_filename[2] == '\0' &&
fd_filename[0] == '\0')
help();
/* boot to cd by default if no hard disk */
if (hd_filename[0] == '\0' && boot_device == 'c') {
if (fd_filename[0] != '\0')
boot_device = 'a';
else
boot_device = 'd';
}
#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
setvbuf(stdout, NULL, _IOLBF, 0);
#endif
/* init network tun interface */
#if defined (TARGET_I386)
if (net_fd < 0)
net_init();
#endif
/* init the memory */
phys_ram_size = ram_size + vga_ram_size;
#ifdef CONFIG_SOFTMMU
phys_ram_base = memalign(TARGET_PAGE_SIZE, phys_ram_size);
if (!phys_ram_base) {
fprintf(stderr, "Could not allocate physical memory\n");
exit(1);
}
#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);
}
ftruncate(phys_ram_fd, phys_ram_size);
unlink(phys_ram_file);
phys_ram_base = mmap(get_mmap_addr(phys_ram_size),
phys_ram_size,
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
/* open the virtual block devices */
for(i = 0; i < MAX_DISKS; i++) {
if (hd_filename[i]) {
bs_table[i] = bdrv_open(hd_filename[i], snapshot);
if (!bs_table[i]) {
fprintf(stderr, "qemu: could not open hard disk image '%s\n",
hd_filename[i]);
exit(1);
}
}
}
/* init CPU state */
env = cpu_init();
global_env = env;
cpu_single_env = env;
init_ioports();
cpu_calibrate_ticks();
/* terminal init */
if (nographic) {
dumb_display_init(ds);
} else {
#ifdef CONFIG_SDL
sdl_display_init(ds);
#else
dumb_display_init(ds);
#endif
}
#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)
ppc_init();
#endif
/* setup cpu signal handlers for MMU / self modifying code handling */
#if !defined(CONFIG_SOFTMMU)
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
{
stack_t stk;
signal_stack = malloc(SIGNAL_STACK_SIZE);
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
sigfillset(&act.sa_mask);
act.sa_flags = SA_SIGINFO;
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
act.sa_flags |= SA_ONSTACK;
#endif
act.sa_sigaction = host_segv_handler;
sigaction(SIGSEGV, &act, NULL);
sigaction(SIGBUS, &act, NULL);
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
sigaction(SIGFPE, &act, NULL);
#endif
#endif
/* timer signal */
sigfillset(&act.sa_mask);
act.sa_flags = SA_SIGINFO;
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
act.sa_flags |= SA_ONSTACK;
#endif
act.sa_sigaction = host_alarm_handler;
sigaction(SIGALRM, &act, NULL);
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);
timer_ms = itv.it_interval.tv_usec / 1000;
pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * PIT_FREQ) /
1000000;
if (use_gdbstub) {
cpu_gdbstub(NULL, main_loop, gdbstub_port);
} else {
main_loop(NULL);
}
return 0;
}
Reference in New Issue View Git Blame Copy Permalink