Question

基本上我已经按照http://sig9.com/bochs-grub中的说明创建了一个裸映像文件，它只能让BIOS启动GRUB。

问题是：

我写的内核将是32位，使用http://www.jamesmolloy.co.uk/tutorial_html/index.html作为开始，但我的主机（物理）机器是x86_64，其中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 --enable-iodebug

所以即使解决了下一个问题，我也不确定这是否会奏效：

当我启动bochs时，grub shell不会启动。

我得到的只是：

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

有谁知道我可能做错了什么？

我怀疑按照http://sig9.com/bochs-grub的说明将主机的64位grub二进制文件复制到了floppy.img上，该软件应该是32位模拟系统。

Answer 1

最后一行是调试器打印出当前代码行。按'c'并按Enter键，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。

在软盘映像文件中使用grub在bochs中启动你自己的内核

1 个答案: