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Memory state recovery method for MMU environment in CPU chip simulation acceleration

A technology of CPU chip and memory state, which is applied in the field of memory state restoration in an MMU environment, and can solve problems such as memory state restoration

Active Publication Date: 2022-07-22
SUZHOU RICORE IC TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to provide a method for recovering the memory state of the MMU environment in the simulation acceleration of the CPU chip to solve the problem of restoring the memory state of the MMU environment

Method used

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  • Memory state recovery method for MMU environment in CPU chip simulation acceleration
  • Memory state recovery method for MMU environment in CPU chip simulation acceleration
  • Memory state recovery method for MMU environment in CPU chip simulation acceleration

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Embodiment Construction

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. In addition, it should be further emphasized here that the preferred technical solutions provided by the following specific embodiments can be used in cooperation with each other or in combination.

[0039] First, the application slice in the present invention is explained, and the application slice is composed of instruction fragments and checkpoint information.

[0040] Table 1-5 gives complete information about an application slice, that is, the know...

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Abstract

The invention relates to a memory state recovery method for an MMU environment in CPU chip simulation acceleration, and the method comprises the following steps: S1, distributing a physical memory for each page of each virtual memory domain in an available physical memory space, and configuring a page table; s2, updating the memory access record and address data in the stack; and S3, updating the address data in the register. Under the condition that the MMU exists, an original virtual address of a memory address used by the processor is kept unchanged, and then the memory address is remapped to a physical address by the MMU.

Description

technical field [0001] The invention relates to a memory state recovery method, in particular to a memory state recovery method for an MMU environment in CPU chip emulation acceleration. Background technique [0002] like figure 1 As shown, in the field of processor design, it is necessary to analyze and evaluate the running effect of a specific application on the designed processor based on a simulation platform. [0003] Slicing an application program is to extract instruction fragments with a high proportion according to the running status of the application program, together with the required operating status, mainly including register values ​​and memory status. The purpose of the resulting application slice is to run it on an instance of a particular processor design in a simulation platform to get an evaluation of that design to guide processor design. Compared to running a full application, running application slices can significantly reduce simulation time and spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/398G06F11/07G06F12/1009
CPCG06F30/398G06F11/073G06F12/1009Y02D10/00
Inventor 姜志颖王飞范东睿
Owner SUZHOU RICORE IC TECH LTD