my NEMU

Try to learn computer architecture by lab

Aim:

Implement a simplified x86 simulator.

Running environment:

• Virtualbox (Debian netinst CD image with i386 architecture.)
• Debian:
  • make
  • lreadline
  • gcc
  • ld
• more detail

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Aug 12 2015 update:

The functionalities that I have already implemented:

Simple debugger

breakpoints: set, delete
single step through a binary executable file
expression evaluation
print in debugging

ISA

cmpl

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NOTICE in the future:

• the adt itself not must to be synchronized, the user choose whether to synchronize.

• can add NOINTR to make sure user add synchronization if necessary

• put the original global variable to parameter can better re-use some data structure.(ListHead)

• using macro when need different type(Tree<>)

• using special name convention when implement data structure, e.g. _bitmap_array

• design an error return system between 'client' and 'server'(in os is 'os user' and 'os kernel')

  • enum: not a simple FAIL and SUCC but no such directory or file, Segmentation fault.
  • struct: a int indicate state, and a string indicate error message.

• if fail to allocate some resources when allocating a serial of resources,
  remember to free already allocated resources.