Data processing device

A technology of a data processing device and a processing circuit, which is applied in the field of data processing, can solve problems such as reducing the real-time performance of responding to interrupt requests, and achieve the effect of increasing flexibility and improving real-time performance

Active Publication Date: 2017-05-31
C SKY MICROSYST CO LTD
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  • Abstract
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Problems solved by technology

[0005] In the existing interrupt mechanism based on credibility architecture, when the properties of the interrupt request to be processed are inconsistent with the properties of the

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  • Data processing device

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[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] An embodiment of the present invention provides a data processing device, such as figure 1 As shown, the device includes:

[0024] The interrupt controller 11 is connected to the processing circuit 13, and is used to receive an interrupt request, generate an interrupt vector number and an interrupt attribute signal corresponding to th...

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Abstract

The invention provides a data processing device. The device comprises an interruption controller, a processing circuit and an interruption attribute control circuit, wherein the interruption controller is used for receiving an interruption request, generating an interruption vector number and interruption attribute signals corresponding to the interruption request and sending the interruption vector number and the interruption attribute signals corresponding to the interruption request to the processing circuit; the interruption attribute control circuit is used for generating interruption attribute shielding signals or receiving interruption attribute shielding signals sent by an external device connected with an interruption control circuit, and sending the interruption attribute shielding signals to the processing circuit; the processing circuit is used for forcedly changing attribute of the interruption request till the attribute of the interruption request is consistent with the attribute of a current core of the processing circuit when the interruption attribute shielding signals indicate that the attribute of the interruption request needs to be forcedly changed, and processing the interruption request by the current core. Through the data processing device, the real-time property of response to the interruption request can be improved; meanwhile, the flexibility of an interruption processing mechanism based on credibility framework can be greatly improved.

Description

technical field [0001] The present invention relates to the technical field of data processing, in particular to a data processing device. Background technique [0002] With the rapid development of mobile Internet and Internet of Things technology, system reliability becomes more and more important. There are two existing system reliability methods, which are software-based reliability protection and processor architecture-based reliability architecture. Among them, software-based reliability protection has been impossible in many cases. Provide enough credibility to the system, hackers can attack the operating system to bypass the software protection, attack or obtain sensitive resources; and the credibility architecture based on the processor architecture can provide the system with underlying hardware protection other than software protection Mechanism, which isolates and protects sensitive information in the system (such as secret keys, passwords, etc.) through hardwar...

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Application Information

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IPC IPC(8): G06F9/48
CPCG06F9/4812G06F21/52G06F21/556G06F21/74
Inventor 江滔
Owner C SKY MICROSYST CO LTD
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