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Instruction execution flow information processing system, device and method

An information processing method and a technology of an information processing device, which are applied in the direction of machine execution devices, etc., can solve the problems of high performance cost and difficulty in ensuring the accuracy of information, and achieve the effects of small time cost, improved accuracy, and improved practicability

Active Publication Date: 2016-05-18
LOONGSON TECH CORP
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is currently no method or device with better performance for processing execution flow information such as multi-issue out-of-order execution instruction execution flow change information. The existing execution flow information processing method for obtaining instruction execution flow change information has a very high performance overhead. large, and it is difficult to guarantee the correctness of the information obtained, the industry urgently needs to conduct research in this area and provide practical devices, systems and methods

Method used

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  • Instruction execution flow information processing system, device and method
  • Instruction execution flow information processing system, device and method
  • Instruction execution flow information processing system, device and method

Examples

Experimental program
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Embodiment approach

[0096] As an implementable manner, the value of the PCSAMPLE register can be read by an external host through an EJTAG interface.

[0097] As an implementable manner, the number of bits of the read pointer depends on the number of items of instruction execution flow change information of the storage information module.

[0098] As an implementable manner, when it is necessary to read the instruction execution flow change information that first enters the storage information module, the read pointer should set a value that is related to the storage information module used.

[0099] As an implementable manner, pausing the processor and stopping new instruction execution flow change information from entering the storage information module and deleting the first entered instruction execution flow change information are optional and determined according to debugging requirements or other needs. However, when debugging and exporting, it is necessary to pause the processor or stop ne...

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Abstract

The invention relates to a command execution stream information processing system, a command execution stream information processing device and a command execution stream information processing method. The system comprises a microprocessor, an external host and the command execution stream information processing device. The command execution stream information processing device comprises an information acquisition child device and an information analysis processing child device, wherein the information acquisition child device is used for monitoring the microprocessor and acquiring multiple-issue out-of-order execution command execution-stream change information of the microprocessor; the information analysis processing child device is used for judging and identifying the acquired command execution stream change information and carrying out merging processing on the acquired command execution stream change information and stored command execution stream change information. A lead-out child device is used for controlling to read the command execution stream change information from the information analysis processing child device and leading out the command execution stream change information to the external host. A small storage space is used for recording more recent information and information which can be used for, but not be limited to the silicon post debugging and compilation optimization is effectively provided.

Description

technical field [0001] The invention relates to the technical field of computer processors, in particular to an instruction execution flow information processing system, device and method for multi-issue out-of-order execution instructions of the processor. Background technique [0002] At present, the optimization function of the compiler of processors such as RISC-based microprocessors and some post-silicon debugging work need to obtain the execution flow information of multi-issue out-of-order execution instructions during the execution of the processor, so as to perform compilation optimization, or Perform post-silicon debug. [0003] When the processor is executing the program, the execution flow of the multi-issue out-of-order execution instructions will only be changed in two cases: the first case is that a branch instruction is executed, and the second case is that an exception occurs. In order to know the execution flow information of the executed multi-issue out-o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/30
Inventor 吴瑞阳陈云霁胡伟武杨梁
Owner LOONGSON TECH CORP
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