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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
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <stdarg.h> |
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#include <string.h> |
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#include <ctype.h> |
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#include <getopt.h> |
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#include <inttypes.h> |
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#include <unistd.h> |
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#include <sys/mman.h> |
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#include <fcntl.h> |
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#include <signal.h> |
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#include <time.h> |
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#include <sys/time.h> |
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#include <malloc.h> |
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#include <termios.h> |
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#include <sys/poll.h> |
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#include <errno.h> |
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#include <sys/wait.h> |
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#include <sys/ioctl.h> |
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#include <sys/socket.h> |
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#include <linux/if.h> |
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#include <linux/if_tun.h> |
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#include "disas.h" |
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#include "thunk.h" |
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#include "vl.h" |
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#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup" |
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//#define DEBUG_UNUSED_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
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#define PHYS_RAM_MAX_SIZE (2047 * 1024 * 1024) |
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#endif
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|
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#if defined (TARGET_I386)
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#elif defined (TARGET_PPC)
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//#define USE_OPEN_FIRMWARE
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#if !defined (USE_OPEN_FIRMWARE)
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#define KERNEL_LOAD_ADDR 0x01000000 |
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#define KERNEL_STACK_ADDR 0x01200000 |
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#else
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#define KERNEL_LOAD_ADDR 0x00000000 |
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#define KERNEL_STACK_ADDR 0x00400000 |
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#endif
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#endif
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#define GUI_REFRESH_INTERVAL 30 |
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/* XXX: use a two level table to limit memory usage */
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#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; |
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CPUState *cpu_single_env; |
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IOPortReadFunc *ioport_read_table[3][MAX_IOPORTS];
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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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static DisplayState display_state;
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int nographic;
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int term_inited;
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int64_t ticks_per_sec; |
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int boot_device = 'c'; |
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static int ram_size; |
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static char network_script[1024]; |
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int pit_min_timer_count = 0; |
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/***********************************************************/
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/* x86 io ports */
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uint32_t default_ioport_readb(CPUState *env, uint32_t address) |
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{ |
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#ifdef DEBUG_UNUSED_IOPORT
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fprintf(stderr, "inb: port=0x%04x\n", address);
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#endif
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return 0xff; |
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} |
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void default_ioport_writeb(CPUState *env, uint32_t address, uint32_t data)
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{ |
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#ifdef DEBUG_UNUSED_IOPORT
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fprintf(stderr, "outb: port=0x%04x data=0x%02x\n", address, data);
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#endif
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} |
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/* default is to make two byte accesses */
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uint32_t default_ioport_readw(CPUState *env, uint32_t address) |
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{ |
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uint32_t data; |
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data = ioport_read_table[0][address & (MAX_IOPORTS - 1)](env, address); |
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data |= ioport_read_table[0][(address + 1) & (MAX_IOPORTS - 1)](env, address + 1) << 8; |
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return data;
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} |
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void default_ioport_writew(CPUState *env, uint32_t address, uint32_t data)
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{ |
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ioport_write_table[0][address & (MAX_IOPORTS - 1)](env, address, data & 0xff); |
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ioport_write_table[0][(address + 1) & (MAX_IOPORTS - 1)](env, address + 1, (data >> 8) & 0xff); |
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} |
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uint32_t default_ioport_readl(CPUState *env, uint32_t address) |
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{ |
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#ifdef DEBUG_UNUSED_IOPORT
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fprintf(stderr, "inl: port=0x%04x\n", address);
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#endif
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return 0xffffffff; |
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} |
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void default_ioport_writel(CPUState *env, uint32_t address, uint32_t data)
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{ |
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#ifdef DEBUG_UNUSED_IOPORT
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fprintf(stderr, "outl: port=0x%04x data=0x%02x\n", address, data);
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#endif
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} |
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void init_ioports(void) |
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{ |
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int i;
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for(i = 0; i < MAX_IOPORTS; i++) { |
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ioport_read_table[0][i] = default_ioport_readb;
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ioport_write_table[0][i] = default_ioport_writeb;
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ioport_read_table[1][i] = default_ioport_readw;
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ioport_write_table[1][i] = default_ioport_writew;
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ioport_read_table[2][i] = default_ioport_readl;
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ioport_write_table[2][i] = default_ioport_writel;
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} |
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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, IOPortReadFunc *func, int size) |
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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
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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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return 0; |
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} |
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/* size is the word size in byte */
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int register_ioport_write(int start, int length, IOPortWriteFunc *func, int size) |
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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
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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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return 0; |
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} |
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void pstrcpy(char *buf, int buf_size, const char *str) |
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{ |
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int c;
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char *q = buf;
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if (buf_size <= 0) |
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return;
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for(;;) {
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c = *str++; |
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if (c == 0 || q >= buf + buf_size - 1) |
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break;
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*q++ = c; |
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} |
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*q = '\0';
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} |
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/* strcat and truncate. */
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char *pstrcat(char *buf, int buf_size, const char *s) |
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{ |
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int len;
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len = strlen(buf); |
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if (len < buf_size)
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pstrcpy(buf + len, buf_size - len, s); |
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return buf;
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} |
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/* return the size or -1 if error */
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int load_image(const char *filename, uint8_t *addr) |
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{ |
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int fd, size;
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fd = open(filename, O_RDONLY); |
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if (fd < 0) |
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return -1; |
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size = lseek(fd, 0, SEEK_END);
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lseek(fd, 0, SEEK_SET);
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if (read(fd, addr, size) != size) {
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close(fd); |
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return -1; |
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} |
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close(fd); |
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return size;
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} |
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void cpu_outb(CPUState *env, int addr, int val) |
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{ |
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ioport_write_table[0][addr & (MAX_IOPORTS - 1)](env, 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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ioport_write_table[1][addr & (MAX_IOPORTS - 1)](env, addr, val); |
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} |
248 |
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void cpu_outl(CPUState *env, int addr, int val) |
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{ |
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ioport_write_table[2][addr & (MAX_IOPORTS - 1)](env, 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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return ioport_read_table[0][addr & (MAX_IOPORTS - 1)](env, addr); |
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} |
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int cpu_inw(CPUState *env, int addr) |
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{ |
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return ioport_read_table[1][addr & (MAX_IOPORTS - 1)](env, addr); |
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} |
263 |
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int cpu_inl(CPUState *env, int addr) |
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{ |
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return ioport_read_table[2][addr & (MAX_IOPORTS - 1)](env, addr); |
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} |
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/***********************************************************/
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void hw_error(const char *fmt, ...) |
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{ |
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va_list ap; |
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va_start(ap, fmt); |
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fprintf(stderr, "qemu: hardware error: ");
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vfprintf(stderr, fmt, ap); |
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fprintf(stderr, "\n");
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#ifdef TARGET_I386
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cpu_x86_dump_state(global_env, stderr, X86_DUMP_FPU | X86_DUMP_CCOP); |
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#else
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cpu_dump_state(global_env, stderr, 0);
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#endif
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va_end(ap); |
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abort(); |
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} |
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#if defined(__powerpc__)
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static inline uint32_t get_tbl(void) |
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{ |
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uint32_t tbl; |
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asm volatile("mftb %0" : "=r" (tbl)); |
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return tbl;
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} |
295 |
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static inline uint32_t get_tbu(void) |
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{ |
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uint32_t tbl; |
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asm volatile("mftbu %0" : "=r" (tbl)); |
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return tbl;
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} |
302 |
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int64_t cpu_get_real_ticks(void)
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{ |
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uint32_t l, h, h1; |
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/* NOTE: we test if wrapping has occurred */
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do {
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h = get_tbu(); |
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l = get_tbl(); |
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h1 = get_tbu(); |
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} while (h != h1);
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return ((int64_t)h << 32) | l; |
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} |
314 |
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#elif defined(__i386__)
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int64_t cpu_get_real_ticks(void)
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{ |
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int64_t val; |
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asm("rdtsc" : "=A" (val)); |
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return val;
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} |
323 |
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#else
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#error unsupported CPU
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#endif
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static int64_t cpu_ticks_offset;
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static int64_t cpu_ticks_last;
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int64_t cpu_get_ticks(void)
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{ |
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return cpu_get_real_ticks() + cpu_ticks_offset;
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} |
335 |
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/* enable cpu_get_ticks() */
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void cpu_enable_ticks(void) |
338 |
{ |
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cpu_ticks_offset = cpu_ticks_last - cpu_get_real_ticks(); |
340 |
} |
341 |
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/* disable cpu_get_ticks() : the clock is stopped. You must not call
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cpu_get_ticks() after that. */
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void cpu_disable_ticks(void) |
345 |
{ |
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cpu_ticks_last = cpu_get_ticks(); |
347 |
} |
348 |
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349 |
int64_t get_clock(void)
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350 |
{ |
351 |
struct timeval tv;
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gettimeofday(&tv, NULL);
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return tv.tv_sec * 1000000LL + tv.tv_usec; |
354 |
} |
355 |
|
356 |
void cpu_calibrate_ticks(void) |
357 |
{ |
358 |
int64_t usec, ticks; |
359 |
|
360 |
usec = get_clock(); |
361 |
ticks = cpu_get_ticks(); |
362 |
usleep(50 * 1000); |
363 |
usec = get_clock() - usec; |
364 |
ticks = cpu_get_ticks() - ticks; |
365 |
ticks_per_sec = (ticks * 1000000LL + (usec >> 1)) / usec; |
366 |
} |
367 |
|
368 |
/* 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) |
370 |
{ |
371 |
union {
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372 |
uint64_t ll; |
373 |
struct {
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374 |
#ifdef WORDS_BIGENDIAN
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375 |
uint32_t high, low; |
376 |
#else
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377 |
uint32_t low, high; |
378 |
#endif
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379 |
} l; |
380 |
} u, res; |
381 |
uint64_t rl, rh; |
382 |
|
383 |
u.ll = a; |
384 |
rl = (uint64_t)u.l.low * (uint64_t)b; |
385 |
rh = (uint64_t)u.l.high * (uint64_t)b; |
386 |
rh += (rl >> 32);
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387 |
res.l.high = rh / c; |
388 |
res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c; |
389 |
return res.ll;
|
390 |
} |
391 |
|
392 |
#define TERM_ESCAPE 0x01 /* ctrl-a is used for escape */ |
393 |
static int term_got_escape, term_command; |
394 |
static unsigned char term_cmd_buf[128]; |
395 |
|
396 |
typedef struct term_cmd_t { |
397 |
const unsigned char *name; |
398 |
void (*handler)(unsigned char *params); |
399 |
} term_cmd_t; |
400 |
|
401 |
static void do_change_cdrom (unsigned char *params); |
402 |
static void do_change_fd0 (unsigned char *params); |
403 |
static void do_change_fd1 (unsigned char *params); |
404 |
|
405 |
static term_cmd_t term_cmds[] = {
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406 |
{ "changecd", &do_change_cdrom, },
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407 |
{ "changefd0", &do_change_fd0, },
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408 |
{ "changefd1", &do_change_fd1, },
|
409 |
{ NULL, NULL, }, |
410 |
}; |
411 |
|
412 |
void term_print_help(void) |
413 |
{ |
414 |
printf("\n"
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415 |
"C-a h print this help\n"
|
416 |
"C-a x exit emulatior\n"
|
417 |
"C-a d switch on/off debug log\n"
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418 |
"C-a s save disk data back to file (if -snapshot)\n"
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419 |
"C-a b send break (magic sysrq)\n"
|
420 |
"C-a c send qemu internal command\n"
|
421 |
"C-a C-a send C-a\n"
|
422 |
); |
423 |
} |
424 |
|
425 |
static void do_change_cdrom (unsigned char *params) |
426 |
{ |
427 |
/* Dunno how to do it... */
|
428 |
} |
429 |
|
430 |
static void do_change_fd (int fd, unsigned char *params) |
431 |
{ |
432 |
unsigned char *name_start, *name_end, *ros; |
433 |
int ro;
|
434 |
|
435 |
for (name_start = params;
|
436 |
isspace(*name_start); name_start++) |
437 |
continue;
|
438 |
if (*name_start == '\0') |
439 |
return;
|
440 |
for (name_end = name_start;
|
441 |
!isspace(*name_end) && *name_end != '\0'; name_end++)
|
442 |
continue;
|
443 |
for (ros = name_end + 1; isspace(*ros); ros++) |
444 |
continue;
|
445 |
if (ros[0] == 'r' && ros[1] == 'o') |
446 |
ro = 1;
|
447 |
else
|
448 |
ro = 0;
|
449 |
*name_end = '\0';
|
450 |
printf("Change fd %d to %s (%s)\n", fd, name_start, params);
|
451 |
fdctrl_disk_change(fd, name_start, ro); |
452 |
} |
453 |
|
454 |
static void do_change_fd0 (unsigned char *params) |
455 |
{ |
456 |
do_change_fd(0, params);
|
457 |
} |
458 |
|
459 |
static void do_change_fd1 (unsigned char *params) |
460 |
{ |
461 |
do_change_fd(1, params);
|
462 |
} |
463 |
|
464 |
static void term_treat_command(void) |
465 |
{ |
466 |
unsigned char *cmd_start, *cmd_end; |
467 |
int i;
|
468 |
|
469 |
for (cmd_start = term_cmd_buf; isspace(*cmd_start); cmd_start++)
|
470 |
continue;
|
471 |
for (cmd_end = cmd_start;
|
472 |
!isspace(*cmd_end) && *cmd_end != '\0'; cmd_end++)
|
473 |
continue;
|
474 |
for (i = 0; term_cmds[i].name != NULL; i++) { |
475 |
if (strlen(term_cmds[i].name) == (cmd_end - cmd_start) &&
|
476 |
memcmp(term_cmds[i].name, cmd_start, cmd_end - cmd_start) == 0) {
|
477 |
(*term_cmds[i].handler)(cmd_end + 1);
|
478 |
return;
|
479 |
} |
480 |
} |
481 |
*cmd_end = '\0';
|
482 |
printf("Unknown term command: %s\n", cmd_start);
|
483 |
} |
484 |
|
485 |
extern FILE *logfile;
|
486 |
|
487 |
/* called when a char is received */
|
488 |
void term_received_byte(int ch) |
489 |
{ |
490 |
if (term_command) {
|
491 |
if (ch == '\n' || ch == '\r' || term_command == 127) { |
492 |
printf("\n");
|
493 |
term_treat_command(); |
494 |
term_command = 0;
|
495 |
} else {
|
496 |
if (ch == 0x7F || ch == 0x08) { |
497 |
if (term_command > 1) { |
498 |
term_cmd_buf[--term_command - 1] = '\0'; |
499 |
printf("\r "
|
500 |
" ");
|
501 |
printf("\r> %s", term_cmd_buf);
|
502 |
} |
503 |
} else if (ch > 0x1f) { |
504 |
term_cmd_buf[term_command++ - 1] = ch;
|
505 |
term_cmd_buf[term_command - 1] = '\0'; |
506 |
printf("\r> %s", term_cmd_buf);
|
507 |
} |
508 |
fflush(stdout); |
509 |
} |
510 |
} else if (term_got_escape) { |
511 |
term_got_escape = 0;
|
512 |
switch(ch) {
|
513 |
case 'h': |
514 |
term_print_help(); |
515 |
break;
|
516 |
case 'x': |
517 |
exit(0);
|
518 |
break;
|
519 |
case 's': |
520 |
{ |
521 |
int i;
|
522 |
for (i = 0; i < MAX_DISKS; i++) { |
523 |
if (bs_table[i])
|
524 |
bdrv_commit(bs_table[i]); |
525 |
} |
526 |
} |
527 |
break;
|
528 |
case 'b': |
529 |
serial_receive_break(); |
530 |
break;
|
531 |
case 'c': |
532 |
printf("> ");
|
533 |
fflush(stdout); |
534 |
term_command = 1;
|
535 |
break;
|
536 |
case 'd': |
537 |
cpu_set_log(CPU_LOG_ALL); |
538 |
break;
|
539 |
case TERM_ESCAPE:
|
540 |
goto send_char;
|
541 |
} |
542 |
} else if (ch == TERM_ESCAPE) { |
543 |
term_got_escape = 1;
|
544 |
} else {
|
545 |
send_char:
|
546 |
serial_receive_byte(ch); |
547 |
} |
548 |
} |
549 |
|
550 |
/***********************************************************/
|
551 |
/* Linux network device redirector */
|
552 |
|
553 |
int net_init(void) |
554 |
{ |
555 |
struct ifreq ifr;
|
556 |
int fd, ret, pid, status;
|
557 |
|
558 |
fd = open("/dev/net/tun", O_RDWR);
|
559 |
if (fd < 0) { |
560 |
fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
|
561 |
return -1; |
562 |
} |
563 |
memset(&ifr, 0, sizeof(ifr)); |
564 |
ifr.ifr_flags = IFF_TAP | IFF_NO_PI; |
565 |
pstrcpy(ifr.ifr_name, IFNAMSIZ, "tun%d");
|
566 |
ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
|
567 |
if (ret != 0) { |
568 |
fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
|
569 |
close(fd); |
570 |
return -1; |
571 |
} |
572 |
printf("Connected to host network interface: %s\n", ifr.ifr_name);
|
573 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
574 |
net_fd = fd; |
575 |
|
576 |
/* try to launch network init script */
|
577 |
pid = fork(); |
578 |
if (pid >= 0) { |
579 |
if (pid == 0) { |
580 |
execl(network_script, network_script, ifr.ifr_name, NULL);
|
581 |
exit(1);
|
582 |
} |
583 |
while (waitpid(pid, &status, 0) != pid); |
584 |
if (!WIFEXITED(status) ||
|
585 |
WEXITSTATUS(status) != 0) {
|
586 |
fprintf(stderr, "%s: could not launch network script for '%s'\n",
|
587 |
network_script, ifr.ifr_name); |
588 |
} |
589 |
} |
590 |
return 0; |
591 |
} |
592 |
|
593 |
void net_send_packet(int net_fd, const uint8_t *buf, int size) |
594 |
{ |
595 |
#ifdef DEBUG_NE2000
|
596 |
printf("NE2000: sending packet size=%d\n", size);
|
597 |
#endif
|
598 |
write(net_fd, buf, size); |
599 |
} |
600 |
|
601 |
/***********************************************************/
|
602 |
/* dumb display */
|
603 |
|
604 |
/* init terminal so that we can grab keys */
|
605 |
static struct termios oldtty; |
606 |
|
607 |
static void term_exit(void) |
608 |
{ |
609 |
tcsetattr (0, TCSANOW, &oldtty);
|
610 |
} |
611 |
|
612 |
static void term_init(void) |
613 |
{ |
614 |
struct termios tty;
|
615 |
|
616 |
tcgetattr (0, &tty);
|
617 |
oldtty = tty; |
618 |
|
619 |
tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP |
620 |
|INLCR|IGNCR|ICRNL|IXON); |
621 |
tty.c_oflag |= OPOST; |
622 |
tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); |
623 |
/* if graphical mode, we allow Ctrl-C handling */
|
624 |
if (nographic)
|
625 |
tty.c_lflag &= ~ISIG; |
626 |
tty.c_cflag &= ~(CSIZE|PARENB); |
627 |
tty.c_cflag |= CS8; |
628 |
tty.c_cc[VMIN] = 1;
|
629 |
tty.c_cc[VTIME] = 0;
|
630 |
|
631 |
tcsetattr (0, TCSANOW, &tty);
|
632 |
|
633 |
atexit(term_exit); |
634 |
|
635 |
fcntl(0, F_SETFL, O_NONBLOCK);
|
636 |
} |
637 |
|
638 |
static void dumb_update(DisplayState *ds, int x, int y, int w, int h) |
639 |
{ |
640 |
} |
641 |
|
642 |
static void dumb_resize(DisplayState *ds, int w, int h) |
643 |
{ |
644 |
} |
645 |
|
646 |
static void dumb_refresh(DisplayState *ds) |
647 |
{ |
648 |
vga_update_display(); |
649 |
} |
650 |
|
651 |
void dumb_display_init(DisplayState *ds)
|
652 |
{ |
653 |
ds->data = NULL;
|
654 |
ds->linesize = 0;
|
655 |
ds->depth = 0;
|
656 |
ds->dpy_update = dumb_update; |
657 |
ds->dpy_resize = dumb_resize; |
658 |
ds->dpy_refresh = dumb_refresh; |
659 |
} |
660 |
|
661 |
#if !defined(CONFIG_SOFTMMU)
|
662 |
/***********************************************************/
|
663 |
/* cpu signal handler */
|
664 |
static void host_segv_handler(int host_signum, siginfo_t *info, |
665 |
void *puc)
|
666 |
{ |
667 |
if (cpu_signal_handler(host_signum, info, puc))
|
668 |
return;
|
669 |
term_exit(); |
670 |
abort(); |
671 |
} |
672 |
#endif
|
673 |
|
674 |
static int timer_irq_pending; |
675 |
static int timer_irq_count; |
676 |
|
677 |
static int timer_ms; |
678 |
static int gui_refresh_pending, gui_refresh_count; |
679 |
|
680 |
static void host_alarm_handler(int host_signum, siginfo_t *info, |
681 |
void *puc)
|
682 |
{ |
683 |
/* NOTE: since usually the OS asks a 100 Hz clock, there can be
|
684 |
some drift between cpu_get_ticks() and the interrupt time. So
|
685 |
we queue some interrupts to avoid missing some */
|
686 |
timer_irq_count += pit_get_out_edges(&pit_channels[0]);
|
687 |
if (timer_irq_count) {
|
688 |
if (timer_irq_count > 2) |
689 |
timer_irq_count = 2;
|
690 |
timer_irq_count--; |
691 |
timer_irq_pending = 1;
|
692 |
} |
693 |
gui_refresh_count += timer_ms; |
694 |
if (gui_refresh_count >= GUI_REFRESH_INTERVAL) {
|
695 |
gui_refresh_count = 0;
|
696 |
gui_refresh_pending = 1;
|
697 |
} |
698 |
|
699 |
if (gui_refresh_pending || timer_irq_pending) {
|
700 |
/* just exit from the cpu to have a chance to handle timers */
|
701 |
cpu_interrupt(global_env, CPU_INTERRUPT_EXIT); |
702 |
} |
703 |
} |
704 |
|
705 |
/* main execution loop */
|
706 |
|
707 |
CPUState *cpu_gdbstub_get_env(void *opaque)
|
708 |
{ |
709 |
return global_env;
|
710 |
} |
711 |
|
712 |
int main_loop(void *opaque) |
713 |
{ |
714 |
struct pollfd ufds[3], *pf, *serial_ufd, *gdb_ufd; |
715 |
#if defined (TARGET_I386)
|
716 |
struct pollfd *net_ufd;
|
717 |
#endif
|
718 |
int ret, n, timeout, serial_ok;
|
719 |
uint8_t ch; |
720 |
CPUState *env = global_env; |
721 |
|
722 |
if (!term_inited) {
|
723 |
/* initialize terminal only there so that the user has a
|
724 |
chance to stop QEMU with Ctrl-C before the gdb connection
|
725 |
is launched */
|
726 |
term_inited = 1;
|
727 |
term_init(); |
728 |
} |
729 |
|
730 |
serial_ok = 1;
|
731 |
cpu_enable_ticks(); |
732 |
for(;;) {
|
733 |
#if defined (DO_TB_FLUSH)
|
734 |
tb_flush(); |
735 |
#endif
|
736 |
ret = cpu_exec(env); |
737 |
if (reset_requested) {
|
738 |
ret = EXCP_INTERRUPT; |
739 |
break;
|
740 |
} |
741 |
if (ret == EXCP_DEBUG) {
|
742 |
ret = EXCP_DEBUG; |
743 |
break;
|
744 |
} |
745 |
/* if hlt instruction, we wait until the next IRQ */
|
746 |
if (ret == EXCP_HLT)
|
747 |
timeout = 10;
|
748 |
else
|
749 |
timeout = 0;
|
750 |
/* poll any events */
|
751 |
serial_ufd = NULL;
|
752 |
pf = ufds; |
753 |
if (serial_ok && serial_can_receive()) {
|
754 |
serial_ufd = pf; |
755 |
pf->fd = 0;
|
756 |
pf->events = POLLIN; |
757 |
pf++; |
758 |
} |
759 |
#if defined (TARGET_I386)
|
760 |
net_ufd = NULL;
|
761 |
if (net_fd > 0 && ne2000_can_receive()) { |
762 |
net_ufd = pf; |
763 |
pf->fd = net_fd; |
764 |
pf->events = POLLIN; |
765 |
pf++; |
766 |
} |
767 |
#endif
|
768 |
gdb_ufd = NULL;
|
769 |
if (gdbstub_fd > 0) { |
770 |
gdb_ufd = pf; |
771 |
pf->fd = gdbstub_fd; |
772 |
pf->events = POLLIN; |
773 |
pf++; |
774 |
} |
775 |
|
776 |
ret = poll(ufds, pf - ufds, timeout); |
777 |
if (ret > 0) { |
778 |
if (serial_ufd && (serial_ufd->revents & POLLIN)) {
|
779 |
n = read(0, &ch, 1); |
780 |
if (n == 1) { |
781 |
term_received_byte(ch); |
782 |
} else {
|
783 |
/* Closed, stop polling. */
|
784 |
serial_ok = 0;
|
785 |
} |
786 |
} |
787 |
#if defined (TARGET_I386)
|
788 |
if (net_ufd && (net_ufd->revents & POLLIN)) {
|
789 |
uint8_t buf[MAX_ETH_FRAME_SIZE]; |
790 |
|
791 |
n = read(net_fd, buf, MAX_ETH_FRAME_SIZE); |
792 |
if (n > 0) { |
793 |
if (n < 60) { |
794 |
memset(buf + n, 0, 60 - n); |
795 |
n = 60;
|
796 |
} |
797 |
ne2000_receive(buf, n); |
798 |
} |
799 |
} |
800 |
#endif
|
801 |
if (gdb_ufd && (gdb_ufd->revents & POLLIN)) {
|
802 |
uint8_t buf[1];
|
803 |
/* stop emulation if requested by gdb */
|
804 |
n = read(gdbstub_fd, buf, 1);
|
805 |
if (n == 1) { |
806 |
ret = EXCP_INTERRUPT; |
807 |
break;
|
808 |
} |
809 |
} |
810 |
} |
811 |
|
812 |
/* timer IRQ */
|
813 |
if (timer_irq_pending) {
|
814 |
#if defined (TARGET_I386)
|
815 |
pic_set_irq(0, 1); |
816 |
pic_set_irq(0, 0); |
817 |
timer_irq_pending = 0;
|
818 |
rtc_timer(); |
819 |
#endif
|
820 |
} |
821 |
/* XXX: add explicit timer */
|
822 |
SB16_run(); |
823 |
|
824 |
/* run dma transfers, if any */
|
825 |
DMA_run(); |
826 |
|
827 |
/* VGA */
|
828 |
if (gui_refresh_pending) {
|
829 |
display_state.dpy_refresh(&display_state); |
830 |
gui_refresh_pending = 0;
|
831 |
} |
832 |
} |
833 |
cpu_disable_ticks(); |
834 |
return ret;
|
835 |
} |
836 |
|
837 |
void help(void) |
838 |
{ |
839 |
printf("QEMU PC emulator version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n" |
840 |
"usage: %s [options] [disk_image]\n"
|
841 |
"\n"
|
842 |
"'disk_image' is a raw hard image image for IDE hard disk 0\n"
|
843 |
"\n"
|
844 |
"Standard options:\n"
|
845 |
"-fda/-fdb file use 'file' as floppy disk 0/1 image\n"
|
846 |
"-hda/-hdb file use 'file' as IDE hard disk 0/1 image\n"
|
847 |
"-hdc/-hdd file use 'file' as IDE hard disk 2/3 image\n"
|
848 |
"-cdrom file use 'file' as IDE cdrom 2 image\n"
|
849 |
"-boot [a|b|c|d] boot on floppy (a, b), hard disk (c) or CD-ROM (d)\n"
|
850 |
"-snapshot write to temporary files instead of disk image files\n"
|
851 |
"-m megs set virtual RAM size to megs MB\n"
|
852 |
"-n script set network init script [default=%s]\n"
|
853 |
"-tun-fd fd this fd talks to tap/tun, use it.\n"
|
854 |
"-nographic disable graphical output\n"
|
855 |
"\n"
|
856 |
"Linux boot specific (does not require PC BIOS):\n"
|
857 |
"-kernel bzImage use 'bzImage' as kernel image\n"
|
858 |
"-append cmdline use 'cmdline' as kernel command line\n"
|
859 |
"-initrd file use 'file' as initial ram disk\n"
|
860 |
"\n"
|
861 |
"Debug/Expert options:\n"
|
862 |
"-s wait gdb connection to port %d\n"
|
863 |
"-p port change gdb connection port\n"
|
864 |
"-d output log to %s\n"
|
865 |
"-hdachs c,h,s force hard disk 0 geometry (usually qemu can guess it)\n"
|
866 |
"-L path set the directory for the BIOS and VGA BIOS\n"
|
867 |
#ifdef USE_CODE_COPY
|
868 |
"-no-code-copy disable code copy acceleration\n"
|
869 |
#endif
|
870 |
|
871 |
"\n"
|
872 |
"During emulation, use C-a h to get terminal commands:\n",
|
873 |
#ifdef CONFIG_SOFTMMU
|
874 |
"qemu",
|
875 |
#else
|
876 |
"qemu-fast",
|
877 |
#endif
|
878 |
DEFAULT_NETWORK_SCRIPT, |
879 |
DEFAULT_GDBSTUB_PORT, |
880 |
"/tmp/qemu.log");
|
881 |
term_print_help(); |
882 |
#ifndef CONFIG_SOFTMMU
|
883 |
printf("\n"
|
884 |
"NOTE: this version of QEMU is faster but it needs slightly patched OSes to\n"
|
885 |
"work. Please use the 'qemu' executable to have a more accurate (but slower)\n"
|
886 |
"PC emulation.\n");
|
887 |
#endif
|
888 |
exit(1);
|
889 |
} |
890 |
|
891 |
struct option long_options[] = {
|
892 |
{ "initrd", 1, NULL, 0, }, |
893 |
{ "hda", 1, NULL, 0, }, |
894 |
{ "hdb", 1, NULL, 0, }, |
895 |
{ "snapshot", 0, NULL, 0, }, |
896 |
{ "hdachs", 1, NULL, 0, }, |
897 |
{ "nographic", 0, NULL, 0, }, |
898 |
{ "kernel", 1, NULL, 0, }, |
899 |
{ "append", 1, NULL, 0, }, |
900 |
{ "tun-fd", 1, NULL, 0, }, |
901 |
{ "hdc", 1, NULL, 0, }, |
902 |
{ "hdd", 1, NULL, 0, }, |
903 |
{ "cdrom", 1, NULL, 0, }, |
904 |
{ "boot", 1, NULL, 0, }, |
905 |
{ "fda", 1, NULL, 0, }, |
906 |
{ "fdb", 1, NULL, 0, }, |
907 |
{ "no-code-copy", 0, NULL, 0}, |
908 |
{ NULL, 0, NULL, 0 }, |
909 |
}; |
910 |
|
911 |
#ifdef CONFIG_SDL
|
912 |
/* SDL use the pthreads and they modify sigaction. We don't
|
913 |
want that. */
|
914 |
#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) |
915 |
extern void __libc_sigaction(); |
916 |
#define sigaction(sig, act, oact) __libc_sigaction(sig, act, oact)
|
917 |
#else
|
918 |
extern void __sigaction(); |
919 |
#define sigaction(sig, act, oact) __sigaction(sig, act, oact)
|
920 |
#endif
|
921 |
#endif /* CONFIG_SDL */ |
922 |
|
923 |
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
|
924 |
|
925 |
/* this stack is only used during signal handling */
|
926 |
#define SIGNAL_STACK_SIZE 32768 |
927 |
|
928 |
static uint8_t *signal_stack;
|
929 |
|
930 |
#endif
|
931 |
|
932 |
int main(int argc, char **argv) |
933 |
{ |
934 |
int c, i, use_gdbstub, gdbstub_port, long_index;
|
935 |
int snapshot, linux_boot;
|
936 |
struct sigaction act;
|
937 |
struct itimerval itv;
|
938 |
CPUState *env; |
939 |
const char *initrd_filename; |
940 |
const char *hd_filename[MAX_DISKS], *fd_filename[MAX_FD]; |
941 |
const char *kernel_filename, *kernel_cmdline; |
942 |
DisplayState *ds = &display_state; |
943 |
|
944 |
/* we never want that malloc() uses mmap() */
|
945 |
mallopt(M_MMAP_THRESHOLD, 4096 * 1024); |
946 |
initrd_filename = NULL;
|
947 |
for(i = 0; i < MAX_FD; i++) |
948 |
fd_filename[i] = NULL;
|
949 |
for(i = 0; i < MAX_DISKS; i++) |
950 |
hd_filename[i] = NULL;
|
951 |
ram_size = 32 * 1024 * 1024; |
952 |
vga_ram_size = VGA_RAM_SIZE; |
953 |
#if defined (TARGET_I386)
|
954 |
pstrcpy(network_script, sizeof(network_script), DEFAULT_NETWORK_SCRIPT);
|
955 |
#endif
|
956 |
use_gdbstub = 0;
|
957 |
gdbstub_port = DEFAULT_GDBSTUB_PORT; |
958 |
snapshot = 0;
|
959 |
nographic = 0;
|
960 |
kernel_filename = NULL;
|
961 |
kernel_cmdline = "";
|
962 |
for(;;) {
|
963 |
c = getopt_long_only(argc, argv, "hm:dn:sp:L:", long_options, &long_index);
|
964 |
if (c == -1) |
965 |
break;
|
966 |
switch(c) {
|
967 |
case 0: |
968 |
switch(long_index) {
|
969 |
case 0: |
970 |
initrd_filename = optarg; |
971 |
break;
|
972 |
case 1: |
973 |
hd_filename[0] = optarg;
|
974 |
break;
|
975 |
case 2: |
976 |
hd_filename[1] = optarg;
|
977 |
break;
|
978 |
case 3: |
979 |
snapshot = 1;
|
980 |
break;
|
981 |
case 4: |
982 |
{ |
983 |
int cyls, heads, secs;
|
984 |
const char *p; |
985 |
p = optarg; |
986 |
cyls = strtol(p, (char **)&p, 0); |
987 |
if (*p != ',') |
988 |
goto chs_fail;
|
989 |
p++; |
990 |
heads = strtol(p, (char **)&p, 0); |
991 |
if (*p != ',') |
992 |
goto chs_fail;
|
993 |
p++; |
994 |
secs = strtol(p, (char **)&p, 0); |
995 |
if (*p != '\0') |
996 |
goto chs_fail;
|
997 |
ide_set_geometry(0, cyls, heads, secs);
|
998 |
chs_fail: ;
|
999 |
} |
1000 |
break;
|
1001 |
case 5: |
1002 |
nographic = 1;
|
1003 |
break;
|
1004 |
case 6: |
1005 |
kernel_filename = optarg; |
1006 |
break;
|
1007 |
case 7: |
1008 |
kernel_cmdline = optarg; |
1009 |
break;
|
1010 |
#if defined (TARGET_I386)
|
1011 |
case 8: |
1012 |
net_fd = atoi(optarg); |
1013 |
break;
|
1014 |
#endif
|
1015 |
case 9: |
1016 |
hd_filename[2] = optarg;
|
1017 |
break;
|
1018 |
case 10: |
1019 |
hd_filename[3] = optarg;
|
1020 |
break;
|
1021 |
case 11: |
1022 |
hd_filename[2] = optarg;
|
1023 |
ide_set_cdrom(2, 1); |
1024 |
break;
|
1025 |
case 12: |
1026 |
boot_device = optarg[0];
|
1027 |
if (boot_device != 'a' && boot_device != 'b' && |
1028 |
boot_device != 'c' && boot_device != 'd') { |
1029 |
fprintf(stderr, "qemu: invalid boot device '%c'\n", boot_device);
|
1030 |
exit(1);
|
1031 |
} |
1032 |
break;
|
1033 |
case 13: |
1034 |
fd_filename[0] = optarg;
|
1035 |
break;
|
1036 |
case 14: |
1037 |
fd_filename[1] = optarg;
|
1038 |
break;
|
1039 |
case 15: |
1040 |
code_copy_enabled = 0;
|
1041 |
break;
|
1042 |
} |
1043 |
break;
|
1044 |
case 'h': |
1045 |
help(); |
1046 |
break;
|
1047 |
case 'm': |
1048 |
ram_size = atoi(optarg) * 1024 * 1024; |
1049 |
if (ram_size <= 0) |
1050 |
help(); |
1051 |
if (ram_size > PHYS_RAM_MAX_SIZE) {
|
1052 |
fprintf(stderr, "qemu: at most %d MB RAM can be simulated\n",
|
1053 |
PHYS_RAM_MAX_SIZE / (1024 * 1024)); |
1054 |
exit(1);
|
1055 |
} |
1056 |
break;
|
1057 |
case 'd': |
1058 |
cpu_set_log(CPU_LOG_ALL); |
1059 |
break;
|
1060 |
#if defined (TARGET_I386)
|
1061 |
case 'n': |
1062 |
pstrcpy(network_script, sizeof(network_script), optarg);
|
1063 |
break;
|
1064 |
#endif
|
1065 |
case 's': |
1066 |
use_gdbstub = 1;
|
1067 |
break;
|
1068 |
case 'p': |
1069 |
gdbstub_port = atoi(optarg); |
1070 |
break;
|
1071 |
case 'L': |
1072 |
bios_dir = optarg; |
1073 |
break;
|
1074 |
} |
1075 |
} |
1076 |
|
1077 |
if (optind < argc) {
|
1078 |
hd_filename[0] = argv[optind++];
|
1079 |
} |
1080 |
|
1081 |
linux_boot = (kernel_filename != NULL);
|
1082 |
|
1083 |
if (!linux_boot && hd_filename[0] == '\0' && hd_filename[2] == '\0' && |
1084 |
fd_filename[0] == '\0') |
1085 |
help(); |
1086 |
|
1087 |
/* boot to cd by default if no hard disk */
|
1088 |
if (hd_filename[0] == '\0' && boot_device == 'c') { |
1089 |
if (fd_filename[0] != '\0') |
1090 |
boot_device = 'a';
|
1091 |
else
|
1092 |
boot_device = 'd';
|
1093 |
} |
1094 |
|
1095 |
#if !defined(CONFIG_SOFTMMU)
|
1096 |
/* must avoid mmap() usage of glibc by setting a buffer "by hand" */
|
1097 |
{ |
1098 |
static uint8_t stdout_buf[4096]; |
1099 |
setvbuf(stdout, stdout_buf, _IOLBF, sizeof(stdout_buf));
|
1100 |
} |
1101 |
#else
|
1102 |
setvbuf(stdout, NULL, _IOLBF, 0); |
1103 |
#endif
|
1104 |
|
1105 |
/* init network tun interface */
|
1106 |
#if defined (TARGET_I386)
|
1107 |
if (net_fd < 0) |
1108 |
net_init(); |
1109 |
#endif
|
1110 |
|
1111 |
/* init the memory */
|
1112 |
phys_ram_size = ram_size + vga_ram_size; |
1113 |
|
1114 |
#ifdef CONFIG_SOFTMMU
|
1115 |
phys_ram_base = memalign(TARGET_PAGE_SIZE, phys_ram_size); |
1116 |
if (!phys_ram_base) {
|
1117 |
fprintf(stderr, "Could not allocate physical memory\n");
|
1118 |
exit(1);
|
1119 |
} |
1120 |
#else
|
1121 |
/* as we must map the same page at several addresses, we must use
|
1122 |
a fd */
|
1123 |
{ |
1124 |
const char *tmpdir; |
1125 |
|
1126 |
tmpdir = getenv("QEMU_TMPDIR");
|
1127 |
if (!tmpdir)
|
1128 |
tmpdir = "/tmp";
|
1129 |
snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/vlXXXXXX", tmpdir); |
1130 |
if (mkstemp(phys_ram_file) < 0) { |
1131 |
fprintf(stderr, "Could not create temporary memory file '%s'\n",
|
1132 |
phys_ram_file); |
1133 |
exit(1);
|
1134 |
} |
1135 |
phys_ram_fd = open(phys_ram_file, O_CREAT | O_TRUNC | O_RDWR, 0600);
|
1136 |
if (phys_ram_fd < 0) { |
1137 |
fprintf(stderr, "Could not open temporary memory file '%s'\n",
|
1138 |
phys_ram_file); |
1139 |
exit(1);
|
1140 |
} |
1141 |
ftruncate(phys_ram_fd, phys_ram_size); |
1142 |
unlink(phys_ram_file); |
1143 |
phys_ram_base = mmap(get_mmap_addr(phys_ram_size), |
1144 |
phys_ram_size, |
1145 |
PROT_WRITE | PROT_READ, MAP_SHARED | MAP_FIXED, |
1146 |
phys_ram_fd, 0);
|
1147 |
if (phys_ram_base == MAP_FAILED) {
|
1148 |
fprintf(stderr, "Could not map physical memory\n");
|
1149 |
exit(1);
|
1150 |
} |
1151 |
} |
1152 |
#endif
|
1153 |
|
1154 |
/* open the virtual block devices */
|
1155 |
for(i = 0; i < MAX_DISKS; i++) { |
1156 |
if (hd_filename[i]) {
|
1157 |
bs_table[i] = bdrv_open(hd_filename[i], snapshot); |
1158 |
if (!bs_table[i]) {
|
1159 |
fprintf(stderr, "qemu: could not open hard disk image '%s\n",
|
1160 |
hd_filename[i]); |
1161 |
exit(1);
|
1162 |
} |
1163 |
} |
1164 |
} |
1165 |
|
1166 |
/* init CPU state */
|
1167 |
env = cpu_init(); |
1168 |
global_env = env; |
1169 |
cpu_single_env = env; |
1170 |
|
1171 |
init_ioports(); |
1172 |
cpu_calibrate_ticks(); |
1173 |
|
1174 |
/* terminal init */
|
1175 |
if (nographic) {
|
1176 |
dumb_display_init(ds); |
1177 |
} else {
|
1178 |
#ifdef CONFIG_SDL
|
1179 |
sdl_display_init(ds); |
1180 |
#else
|
1181 |
dumb_display_init(ds); |
1182 |
#endif
|
1183 |
} |
1184 |
|
1185 |
#if defined(TARGET_I386)
|
1186 |
pc_init(ram_size, vga_ram_size, boot_device, |
1187 |
ds, fd_filename, snapshot, |
1188 |
kernel_filename, kernel_cmdline, initrd_filename); |
1189 |
#elif defined(TARGET_PPC)
|
1190 |
ppc_init(); |
1191 |
#endif
|
1192 |
|
1193 |
/* setup cpu signal handlers for MMU / self modifying code handling */
|
1194 |
#if !defined(CONFIG_SOFTMMU)
|
1195 |
|
1196 |
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
|
1197 |
{ |
1198 |
stack_t stk; |
1199 |
signal_stack = malloc(SIGNAL_STACK_SIZE); |
1200 |
stk.ss_sp = signal_stack; |
1201 |
stk.ss_size = SIGNAL_STACK_SIZE; |
1202 |
stk.ss_flags = 0;
|
1203 |
|
1204 |
if (sigaltstack(&stk, NULL) < 0) { |
1205 |
perror("sigaltstack");
|
1206 |
exit(1);
|
1207 |
} |
1208 |
} |
1209 |
#endif
|
1210 |
|
1211 |
sigfillset(&act.sa_mask); |
1212 |
act.sa_flags = SA_SIGINFO; |
1213 |
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
|
1214 |
act.sa_flags |= SA_ONSTACK; |
1215 |
#endif
|
1216 |
act.sa_sigaction = host_segv_handler; |
1217 |
sigaction(SIGSEGV, &act, NULL);
|
1218 |
sigaction(SIGBUS, &act, NULL);
|
1219 |
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
|
1220 |
sigaction(SIGFPE, &act, NULL);
|
1221 |
#endif
|
1222 |
#endif
|
1223 |
|
1224 |
/* timer signal */
|
1225 |
sigfillset(&act.sa_mask); |
1226 |
act.sa_flags = SA_SIGINFO; |
1227 |
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
|
1228 |
act.sa_flags |= SA_ONSTACK; |
1229 |
#endif
|
1230 |
act.sa_sigaction = host_alarm_handler; |
1231 |
sigaction(SIGALRM, &act, NULL);
|
1232 |
|
1233 |
itv.it_interval.tv_sec = 0;
|
1234 |
itv.it_interval.tv_usec = 1000;
|
1235 |
itv.it_value.tv_sec = 0;
|
1236 |
itv.it_value.tv_usec = 10 * 1000; |
1237 |
setitimer(ITIMER_REAL, &itv, NULL);
|
1238 |
/* we probe the tick duration of the kernel to inform the user if
|
1239 |
the emulated kernel requested a too high timer frequency */
|
1240 |
getitimer(ITIMER_REAL, &itv); |
1241 |
timer_ms = itv.it_interval.tv_usec / 1000;
|
1242 |
pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * PIT_FREQ) / |
1243 |
1000000;
|
1244 |
|
1245 |
if (use_gdbstub) {
|
1246 |
cpu_gdbstub(NULL, main_loop, gdbstub_port);
|
1247 |
} else {
|
1248 |
main_loop(NULL);
|
1249 |
} |
1250 |
return 0; |
1251 |
} |