QEMU中log⽇志⽂件的使⽤在启动时加 -d命令，参考如下：
./qemu-system-ppc -hdc ../../mirror/debian_squeeze_powerpc_desktop.qcow2\合同成立与合同生效的区别
-M mac99\
-monitor stdio\
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-d out_asm\
若要打印多个选项可采⽤如下⽅式（即中间加逗号即可）
./qemu-system-ppc -hdc ../../../mirror/debian_squeeze_powerpc_desktop.qcow2\
-M mac99\
-monitor stdio\
-d in_asm,op\
log选项如下：（在qemu-3.1.0-rc0\util\log.c中定义）
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Log items (comma parated):
out_asm show generated host asmbly code for each compiled TB
in_asm show target asmbly code for each compiled TB
op show micro ops for each compiled TB
op_opt show micro ops after optimization
op_ind show micro ops before indirect lowering埃及眼镜蛇
大学英文自我介绍int show interrupts/exceptions in short format
三八福利exec show trace before each executed TB (lots of logs)
cpu show CPU registers before entering a TB (lots of logs)
fpu include FPU registers in the 'cpu' logging
mmu log MMU-related activities
微星主板bios
pcall x86 only: show protected mode far calls/returns/exceptions
cpu_ret show CPU state before CPU rets
unimp log unimplemented functionality
guest_errors log when the guest OS does something invalid (eg accessing a
non-existent register)
page dump pages at beginning of ur mode emulation
帅哥怎么画nochain do not chain compiled TBs so that "exec" and "cpu" show
complete traces
部分显⽰结果如下：
