Stall detecting apparatus, stall detecting method, and medium containing stall detecting program

An apparatus for detecting and displaying stalls that occur during pipeline processing, comprising:

• input portion for reading a history of simulated execution of a source program;
• interpreter for interpreting the read history of simulated execution of the source program on the basis of processor specifications;
• developing unit for developing the source program into pipeline states in stages of the pipeline processing according to the interpreted history of simulated execution of the source program;
• stall detector for detecting stalls in the pipeline processing according to the states of the source program developed in the pipeline stages and providing stall information representing the detected stalls;
• image creator for creating a pipeline image to show the states of the source program, developed by the developing unit, in the pipeline stages;
• and
• display portion for concurrently displaying the source program and corresponding pipeline image and emphatically displaying in both the source program and the corresponding pipeline image, locations where the detected stalls occur according to the stall information provided by the stall detector.

A method of detecting and displaying stalls that occur during pipeline processing, comprising the steps of:

• reading a source program;
• interpreting the read source program on the basis of processor specifications;
• developing the interpreted source program into states in pipeline stages of the pipeline processing;
• detecting stalls in the pipeline processing according to the states of the source program developed in the pipeline stages and providing stall information representing the detected stalls;
• creating a pipeline image to show the states of the source program, developed in the developing stet), in the pipeline stages;
• and
• displaying the source program and corresponding pipeline image concurrently with locations where the detected stalls occur being emphasized according to the stall information provided in the stall detecting step.

A computer-readable recording medium containing instructions for causing a computer system to detect and display stalls that occur during pipeline processing by:

• interpreting read source program on the basis of processor specifications;
• developing the interpreted source program into states in pipeline stages of the pipeline processing;
• detecting stalls in the pipeline processing according to the states of the source program developed in the pipeline stages and providing stall information representing the detected stalls;
• creating a pipeline image to show the states of the source program. developed in the developing step, in the pipeline stages;
• and
• displaying the source program and corresponding pipeline image concurrently with locations where the detected stalls occur being emphasized according to the stall information provided in the stall detecting step.