mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-11-05 20:35:44 +00:00
80cabfad16
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@656 c046a42c-6fe2-441c-8c8c-71466251a162
1251 lines
33 KiB
C
1251 lines
33 KiB
C
/*
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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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#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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}
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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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}
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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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}
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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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}
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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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}
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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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}
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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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}
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/* enable cpu_get_ticks() */
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void cpu_enable_ticks(void)
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{
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cpu_ticks_offset = cpu_ticks_last - cpu_get_real_ticks();
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}
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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)
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{
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cpu_ticks_last = cpu_get_ticks();
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}
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int64_t get_clock(void)
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{
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struct timeval tv;
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gettimeofday(&tv, NULL);
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return tv.tv_sec * 1000000LL + tv.tv_usec;
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}
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void cpu_calibrate_ticks(void)
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{
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int64_t usec, ticks;
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usec = get_clock();
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ticks = cpu_get_ticks();
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usleep(50 * 1000);
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usec = get_clock() - usec;
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ticks = cpu_get_ticks() - ticks;
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ticks_per_sec = (ticks * 1000000LL + (usec >> 1)) / usec;
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}
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/* compute with 96 bit intermediate result: (a*b)/c */
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uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
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{
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union {
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uint64_t ll;
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struct {
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#ifdef WORDS_BIGENDIAN
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uint32_t high, low;
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#else
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uint32_t low, high;
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#endif
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} l;
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} u, res;
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uint64_t rl, rh;
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u.ll = a;
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rl = (uint64_t)u.l.low * (uint64_t)b;
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rh = (uint64_t)u.l.high * (uint64_t)b;
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rh += (rl >> 32);
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res.l.high = rh / c;
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res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
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return res.ll;
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}
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#define TERM_ESCAPE 0x01 /* ctrl-a is used for escape */
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static int term_got_escape, term_command;
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static unsigned char term_cmd_buf[128];
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typedef struct term_cmd_t {
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const unsigned char *name;
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void (*handler)(unsigned char *params);
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} term_cmd_t;
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static void do_change_cdrom (unsigned char *params);
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static void do_change_fd0 (unsigned char *params);
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static void do_change_fd1 (unsigned char *params);
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static term_cmd_t term_cmds[] = {
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{ "changecd", &do_change_cdrom, },
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{ "changefd0", &do_change_fd0, },
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{ "changefd1", &do_change_fd1, },
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{ NULL, NULL, },
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};
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void term_print_help(void)
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{
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printf("\n"
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"C-a h print this help\n"
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"C-a x exit emulatior\n"
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"C-a d switch on/off debug log\n"
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"C-a s save disk data back to file (if -snapshot)\n"
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"C-a b send break (magic sysrq)\n"
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"C-a c send qemu internal command\n"
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"C-a C-a send C-a\n"
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);
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}
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static void do_change_cdrom (unsigned char *params)
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{
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/* Dunno how to do it... */
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}
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static void do_change_fd (int fd, unsigned char *params)
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{
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unsigned char *name_start, *name_end, *ros;
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int ro;
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for (name_start = params;
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isspace(*name_start); name_start++)
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continue;
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if (*name_start == '\0')
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return;
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for (name_end = name_start;
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!isspace(*name_end) && *name_end != '\0'; name_end++)
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continue;
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for (ros = name_end + 1; isspace(*ros); ros++)
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continue;
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if (ros[0] == 'r' && ros[1] == 'o')
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ro = 1;
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else
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ro = 0;
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*name_end = '\0';
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printf("Change fd %d to %s (%s)\n", fd, name_start, params);
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fdctrl_disk_change(fd, name_start, ro);
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}
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static void do_change_fd0 (unsigned char *params)
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{
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do_change_fd(0, params);
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}
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static void do_change_fd1 (unsigned char *params)
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{
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do_change_fd(1, params);
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}
|
|
|
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static void term_treat_command(void)
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{
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unsigned char *cmd_start, *cmd_end;
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int i;
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for (cmd_start = term_cmd_buf; isspace(*cmd_start); cmd_start++)
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continue;
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for (cmd_end = cmd_start;
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!isspace(*cmd_end) && *cmd_end != '\0'; cmd_end++)
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continue;
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for (i = 0; term_cmds[i].name != NULL; i++) {
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if (strlen(term_cmds[i].name) == (cmd_end - cmd_start) &&
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memcmp(term_cmds[i].name, cmd_start, cmd_end - cmd_start) == 0) {
|
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(*term_cmds[i].handler)(cmd_end + 1);
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|
return;
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|
}
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|
}
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|
*cmd_end = '\0';
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printf("Unknown term command: %s\n", cmd_start);
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}
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|
|
|
extern FILE *logfile;
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|
|
|
/* called when a char is received */
|
|
void term_received_byte(int ch)
|
|
{
|
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if (term_command) {
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if (ch == '\n' || ch == '\r' || term_command == 127) {
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printf("\n");
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term_treat_command();
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term_command = 0;
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|
} else {
|
|
if (ch == 0x7F || ch == 0x08) {
|
|
if (term_command > 1) {
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term_cmd_buf[--term_command - 1] = '\0';
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printf("\r "
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" ");
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|
printf("\r> %s", term_cmd_buf);
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|
}
|
|
} else if (ch > 0x1f) {
|
|
term_cmd_buf[term_command++ - 1] = ch;
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term_cmd_buf[term_command - 1] = '\0';
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printf("\r> %s", term_cmd_buf);
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}
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|
fflush(stdout);
|
|
}
|
|
} else if (term_got_escape) {
|
|
term_got_escape = 0;
|
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switch(ch) {
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case 'h':
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term_print_help();
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|
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;
|
|
}
|