/* * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #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; void *ioport_opaque[MAX_IOPORTS]; 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; int nb_nics; NetDriverState nd_table[MAX_NICS]; SerialState *serial_console; /***********************************************************/ /* x86 io ports */ uint32_t default_ioport_readb(void *opaque, uint32_t address) { #ifdef DEBUG_UNUSED_IOPORT fprintf(stderr, "inb: port=0x%04x\n", address); #endif return 0xff; } void default_ioport_writeb(void *opaque, 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(void *opaque, uint32_t address) { uint32_t data; data = ioport_read_table[0][address & (MAX_IOPORTS - 1)](opaque, address); data |= ioport_read_table[0][(address + 1) & (MAX_IOPORTS - 1)](opaque, address + 1) << 8; return data; } void default_ioport_writew(void *opaque, uint32_t address, uint32_t data) { ioport_write_table[0][address & (MAX_IOPORTS - 1)](opaque, address, data & 0xff); ioport_write_table[0][(address + 1) & (MAX_IOPORTS - 1)](opaque, address + 1, (data >> 8) & 0xff); } uint32_t default_ioport_readl(void *opaque, uint32_t address) { #ifdef DEBUG_UNUSED_IOPORT fprintf(stderr, "inl: port=0x%04x\n", address); #endif return 0xffffffff; } void default_ioport_writel(void *opaque, 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, int size, IOPortReadFunc *func, void *opaque) { int i, bsize; if (size == 1) { bsize = 0; } else if (size == 2) { bsize = 1; } else if (size == 4) { bsize = 2; } else { hw_error("register_ioport_read: invalid size"); return -1; } for(i = start; i < start + length; i += size) { ioport_read_table[bsize][i] = func; if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque) hw_error("register_ioport_read: invalid opaque"); ioport_opaque[i] = opaque; } return 0; } /* size is the word size in byte */ int register_ioport_write(int start, int length, int size, IOPortWriteFunc *func, void *opaque) { int i, bsize; if (size == 1) { bsize = 0; } else if (size == 2) { bsize = 1; } else if (size == 4) { bsize = 2; } else { hw_error("register_ioport_write: invalid size"); return -1; } for(i = start; i < start + length; i += size) { ioport_write_table[bsize][i] = func; if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque) hw_error("register_ioport_read: invalid opaque"); ioport_opaque[i] = opaque; } 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) { addr &= (MAX_IOPORTS - 1); ioport_write_table[0][addr](ioport_opaque[addr], addr, val); } void cpu_outw(CPUState *env, int addr, int val) { addr &= (MAX_IOPORTS - 1); ioport_write_table[1][addr](ioport_opaque[addr], addr, val); } void cpu_outl(CPUState *env, int addr, int val) { addr &= (MAX_IOPORTS - 1); ioport_write_table[2][addr](ioport_opaque[addr], addr, val); } int cpu_inb(CPUState *env, int addr) { addr &= (MAX_IOPORTS - 1); return ioport_read_table[0][addr](ioport_opaque[addr], addr); } int cpu_inw(CPUState *env, int addr) { addr &= (MAX_IOPORTS - 1); return ioport_read_table[1][addr](ioport_opaque[addr], addr); } int cpu_inl(CPUState *env, int addr) { addr &= (MAX_IOPORTS - 1); return ioport_read_table[2][addr](ioport_opaque[addr], 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; } /***********************************************************/ /* serial device */ int serial_open_device(void) { char slave_name[1024]; int master_fd, slave_fd; if (serial_console == NULL && nographic) { /* use console for serial port */ return 0; } else { if (openpty(&master_fd, &slave_fd, slave_name, NULL, NULL) < 0) { fprintf(stderr, "warning: could not create pseudo terminal for serial port\n"); return -1; } fprintf(stderr, "Serial port redirected to %s\n", slave_name); return master_fd; } } /***********************************************************/ /* Linux network device redirector */ static int tun_open(char *ifname, int ifname_size) { struct ifreq ifr; int fd, ret; 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); pstrcpy(ifname, ifname_size, ifr.ifr_name); fcntl(fd, F_SETFL, O_NONBLOCK); return fd; } static int net_init(void) { int pid, status, launch_script, i; NetDriverState *nd; char *args[MAX_NICS + 2]; char **parg; launch_script = 0; for(i = 0; i < nb_nics; i++) { nd = &nd_table[i]; if (nd->fd < 0) { nd->fd = tun_open(nd->ifname, sizeof(nd->ifname)); if (nd->fd >= 0) launch_script = 1; } } if (launch_script) { /* try to launch network init script */ pid = fork(); if (pid >= 0) { if (pid == 0) { parg = args; *parg++ = network_script; for(i = 0; i < nb_nics; i++) { nd = &nd_table[i]; if (nd->fd >= 0) { *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); } } } return 0; } void net_send_packet(NetDriverState *nd, const uint8_t *buf, int size) { #ifdef DEBUG_NE2000 printf("NE2000: sending packet size=%d\n", size); #endif write(nd->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); } } #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; } IOHandlerRecord; static IOHandlerRecord io_handlers[MAX_IO_HANDLERS]; static int nb_io_handlers = 0; int add_fd_read_handler(int fd, IOCanRWHandler *fd_can_read, IOReadHandler *fd_read, void *opaque) { IOHandlerRecord *ioh; if (nb_io_handlers >= MAX_IO_HANDLERS) return -1; ioh = &io_handlers[nb_io_handlers]; ioh->fd = fd; ioh->fd_can_read = fd_can_read; ioh->fd_read = fd_read; ioh->opaque = opaque; nb_io_handlers++; return 0; } /* main execution loop */ CPUState *cpu_gdbstub_get_env(void *opaque) { return global_env; } int main_loop(void *opaque) { struct pollfd ufds[MAX_IO_HANDLERS + 1], *pf, *gdb_ufd; int ret, n, timeout, serial_ok, max_size, i; uint8_t buf[4096]; IOHandlerRecord *ioh; 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 */ pf = ufds; ioh = io_handlers; for(i = 0; i < nb_io_handlers; i++) { 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; } ioh->max_size = max_size; ioh++; } 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) { ioh = io_handlers; for(i = 0; i < nb_io_handlers; i++) { pf = ioh->ufd; if (pf) { n = read(ioh->fd, buf, ioh->max_size); if (n > 0) { ioh->fd_read(ioh->opaque, buf, n); } } ioh++; } 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 image (cdrom is ide1 master)\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" "-nographic disable graphical output and redirect serial I/Os to console\n" "\n" "Network options:\n" "-n script set network init script [default=%s]\n" "-nics n simulate 'n' network interfaces [default=1]\n" "-tun-fd fd0[,...] use these fds as already opened tap/tun interfaces\n" "\n" "Linux boot specific:\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 }, { "nics", 1, 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, has_cdrom; 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; int cyls, heads, secs; /* 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; pstrcpy(network_script, sizeof(network_script), DEFAULT_NETWORK_SCRIPT); use_gdbstub = 0; gdbstub_port = DEFAULT_GDBSTUB_PORT; snapshot = 0; nographic = 0; kernel_filename = NULL; kernel_cmdline = ""; has_cdrom = 1; cyls = heads = secs = 0; nb_nics = 1; for(i = 0; i < MAX_NICS; i++) { NetDriverState *nd = &nd_table[i]; nd->fd = -1; /* init virtual mac address */ nd->macaddr[0] = 0x52; nd->macaddr[1] = 0x54; nd->macaddr[2] = 0x00; nd->macaddr[3] = 0x12; nd->macaddr[4] = 0x34; nd->macaddr[5] = 0x56 + i; } 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: { 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') { chs_fail: cyls = 0; } } break; case 5: nographic = 1; break; case 6: kernel_filename = optarg; break; case 7: kernel_cmdline = optarg; break; case 8: { const char *p; int fd; p = optarg; nb_nics = 0; for(;;) { fd = strtol(p, (char **)&p, 0); nd_table[nb_nics].fd = fd; snprintf(nd_table[nb_nics].ifname, sizeof(nd_table[nb_nics].ifname), "fd%d", nb_nics); nb_nics++; if (*p == ',') { p++; } else if (*p != '\0') { fprintf(stderr, "qemu: invalid fd for network interface %d\n", nb_nics); exit(1); } else { break; } } } break; case 9: hd_filename[2] = optarg; has_cdrom = 0; break; case 10: hd_filename[3] = optarg; break; case 11: hd_filename[2] = optarg; has_cdrom = 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; case 16: nb_nics = atoi(optarg); if (nb_nics < 1 || nb_nics > MAX_NICS) { fprintf(stderr, "qemu: invalid number of network interfaces\n"); exit(1); } 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; case 'n': pstrcpy(network_script, sizeof(network_script), optarg); break; 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 host network redirectors */ net_init(); /* 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 /* we always create the cdrom drive, even if no disk is there */ if (has_cdrom) { bs_table[2] = bdrv_new("cdrom"); bdrv_set_type_hint(bs_table[2], BDRV_TYPE_CDROM); } /* open the virtual block devices */ for(i = 0; i < MAX_DISKS; i++) { if (hd_filename[i]) { if (!bs_table[i]) { 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) { fprintf(stderr, "qemu: could not open hard disk image '%s\n", hd_filename[i]); exit(1); } if (i == 0 && cyls != 0) bdrv_set_geometry_hint(bs_table[i], cyls, heads, secs); } } /* we always create at least one floppy disk */ fd_table[0] = bdrv_new("fda"); bdrv_set_type_hint(fd_table[0], BDRV_TYPE_FLOPPY); for(i = 0; i < MAX_FD; i++) { if (fd_filename[i]) { if (!fd_table[i]) { char buf[64]; snprintf(buf, sizeof(buf), "fd%c", i + 'a'); fd_table[i] = bdrv_new(buf); bdrv_set_type_hint(fd_table[i], BDRV_TYPE_FLOPPY); } if (fd_filename[i] != '\0') { if (bdrv_open(fd_table[i], fd_filename[i], snapshot) < 0) { fprintf(stderr, "qemu: could not open floppy disk image '%s\n", fd_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 /* launched after the device init so that it can display or not a banner */ monitor_init(); /* 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; }