3

基本上我已经按照这里的说明http://sig9.com/bochs-grub创建了一个裸映像文件,它什么都不做,只是让 BIOS 启动 GRUB。

问题是:

  • 我正在编写的内核将是 32 位的,首先使用http://www.jamesmolloy.co.uk/tutorial_html/index.html,但我的主机(物理)机器是 x86_64,bochs 配置如下:

    ./configure --prefix=/usr --enable-vbe --without-wx --enable-cpu-level=6 \ --enable-fpu \ --enable-plugins --enable-x86-64 --enable -smp \ --enable-long-phy-address --enable-debugger --enable-disasm --enable-debugger-gui \ --enable-raw-serial --enable-vmx --enable-x86-debugger - -启用-iodebug

所以我不确定这是否可行,即使在解决了下一个问题之后:

  • 当我启动 bochs 时,grub shell 不会启动。

我得到的是:

00000000000i[SYS  ] bx_pc_system_c::Reset(HARDWARE) called
00000000000i[CPU0 ] cpu hardware reset
00000000000i[APIC0] allocate APIC id=0 (MMIO enabled) to 0x00000000fee00000
00000000000i[CPU0 ] CPU[0] is the bootstrap processor
00000000000i[CPU0 ] CPUID[0x00000000]: 00000003 756e6547 6c65746e 49656e69
00000000000i[CPU0 ] CPUID[0x00000001]: 00000f20 00000800 00002020 078bfbff
00000000000i[CPU0 ] CPUID[0x00000002]: 00410601 00000000 00000000 00000000
00000000000i[CPU0 ] CPUID[0x00000003]: 00000000 00000000 00000000 00000000
00000000000i[CPU0 ] CPUID[0x00000004]: 00000000 00000000 00000000 00000000
00000000000i[CPU0 ] CPUID[0x80000000]: 80000008 00000000 00000000 00000000
00000000000i[CPU0 ] CPUID[0x80000001]: 00000000 00000000 00000101 2a100800
00000000000i[CPU0 ] CPUID[0x80000002]: 20202020 20202020 20202020 6e492020
00000000000i[CPU0 ] CPUID[0x80000003]: 286c6574 50202952 69746e65 52286d75
00000000000i[CPU0 ] CPUID[0x80000004]: 20342029 20555043 20202020 00202020
00000000000i[CPU0 ] CPUID[0x80000006]: 00000000 42004200 02008140 00000000
00000000000i[CPU0 ] CPUID[0x80000007]: 00000000 00000000 00000000 00000000
00000000000i[CPU0 ] CPUID[0x80000008]: 00003028 00000000 00000000 00000000
00000000000i[PLGIN] reset of 'unmapped' plugin device by virtual method
00000000000i[PLGIN] reset of 'biosdev' plugin device by virtual method
00000000000i[PLGIN] reset of 'speaker' plugin device by virtual method
00000000000i[PLGIN] reset of 'extfpuirq' plugin device by virtual method
00000000000i[PLGIN] reset of 'iodebug' plugin device by virtual method
00000000000i[PLGIN] reset of 'ioapic' plugin device by virtual method
00000000000i[PLGIN] reset of 'keyboard' plugin device by virtual method
00000000000i[PLGIN] reset of 'harddrv' plugin device by virtual method
00000000000i[PLGIN] reset of 'serial' plugin device by virtual method
00000000000i[PLGIN] reset of 'parallel' plugin device by virtual method
00000000000i[XGUI ] [x] Mouse off
00000000000i[     ] set SIGINT handler to bx_debug_ctrlc_handler
Next at t=0
(0) [0x00000000fffffff0] f000:fff0 (unk. ctxt): jmp far f000:e05b         ; ea5be000f0

有谁知道我做错了什么?

我怀疑按照http://sig9.com/bochs-grub的说明将主机的 64 位 grub 二进制文件复制到应该是 32 位仿真系统的 floppy.img 上。

4

1 回答 1

1

最后一行是调试器打印出当前的代码行。按“c”并回车,它应该开始运行。至于使用 32 位,它应该可以工作,因为 x86-64 处理器将像任何其他 x86 处理器一样在保护模式下运行。

于 2011-02-20T20:15:28.547 回答