Dummy hardware system and its instruction execution method and dummy machine

Abstract

The present invention discloses an instruction execution method in a virtual hardware system. The method comprises the following steps: loading a plurality of instruction files in the same process; determining the instruction file where an instruction to be executed and a program address in the instruction file during instruction execution; reading and executing the instruction at the program address from the determined instruction file; storing information of a code segment where the present execution instruction is and the program address, then executing an instruction call during the instruction call crossing code segments; returning the stored code segment information before the call and a physical address indicated by the program address during the call return, and keeping on executing subsequent instructions. The present invention also discloses a virtual hardware system and a virtual machine. The instruction execution method can realize the loading and execution of a plurality of instruction files in the virtual hardware system, leave out the step of allocating different program addresses for the instruction files, prevent the situation of relocation because of program address conflict.

Description

technical field [0001] The invention relates to computer technology, in particular to a virtual hardware system, an instruction execution method applied to the virtual hardware system, and a virtual machine. Background technique [0002] Virtual hardware technology refers to the realization of hardware functions through software. FIG. 1 is a schematic structural diagram of a current virtual hardware system. As shown in Figure 1, the virtual hardware system includes a file subsystem and a virtual machine subsystem built on the hardware platform. Wherein, the file subsystem is implemented by a storage medium and is used for storing instruction files. The current file subsystem consists of a single instruction file whose instructions constitute a complete firmware program. The virtual machine subsystem is responsible for loading and executing the instruction file, which specifically includes the following steps: [0003] Step 1: Load the only instruction file in the file su...

AI Technical Summary

Problems solved by technology

Otherwise, the address conflict will cause the instruction to be read incorrectly

However, due to the openness of the virtual hardware system, the application development work is independent of each other, and it is impossible for the program address spaces of the instruction files designed by the virtual hardware system platform developer and the sub-function developer to not overlap each other, and address conflicts still occur. Mutual calls between instruction files cannot be realized

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