Pipeline Structure

Thankyou for your reply I understand what you said but my question is if i dont know that how many pipeline stage in my ARM core have, then how can i determine the pipeline stages by writing a some assembly code?

What kind of algorithm or tecqnuique can be used?

Thankyou

Hi,

unfortunately it would be almost impossible to guess the pipeline structure from assembly codes.

It is why the assmebler instructions would be converted to several micro-operations and sometimes issued in parallel into the execution unit.

As for the single pipeline processors, the instruction throuputs are sometimes described in the according TRM, but the number of executions will vary according to the instruction foldings, pipeline hazards, cache misses and etc.

Best regards,

Yasuhiko Koumoto.

Thanks for your time It really help.

I have some other question i have to investigate the Raspberry Pi B device (ARM1176JZFS). So i can easily get the literature of this processor. My First question is i have to setup an environment to access the processor core on assembly level. So do you have any idea how i have to do this and what assembler i have to used?

2nd Question is is there any possibilities to provoke pipeline problems on this processor by using assembly language?

And if you have whatsapp/Email/Facebook any medium through which i can contact you can you please share with me because i have to ask question.

Thankyou

Best Regards

Suleman Jamil

Hello Suleman Jamil,

My First question is i have to setup an environment to access the processor core on assembly level. So do you have any idea how i have to do this and what assembler i have to used?

Did you install any OSes? If you did, you can use an assembler which would be invoked by a buit-in compiler.
Or do you want to handle the Raspberry Pi under a bare metal environment?

2nd Question is is there any possibilities to provoke pipeline problems on this processor by using assembly language?

Please let us know what the pipeline problem is.
Do you say about the execution definite time?
If it may be so, it is impossible because the caches and the MMU will affect the execution time.

And if you have whatsapp/Email/Facebook any medium through which i can contact you can you please share with me because i have to ask question.

I'm sorry but I am not in any SNS other than here.

Best regards,
Yasuhiko Koumoto.

Hello

Thank you for your time. I really thankful of you.

No i did not install any OSes.

Is KEIL UVision can be used for this Raspberry Pi B device (ARM1176JZFS) to work at assembly level? Because my first task is to setup an environment and write an assembly code to access the ARM1176JZFS processor core. And i am at beginner level.

In pipeline problem i have to check if there are data, control or structural hazards occur or not by writing different pieces of assembly codes.

Thankyou

Best Regards

Sulema Jamil

I am only allowed to use assembler to perform the following tasks:

Pipelining is a heavily used concept to accelerate today’s controllers and processors. Within this project the main controller of a Raspberry Pi B device (ARM1176JZFS) should be investigated in detail. Several assembly programs should be written and executed to check the behavior of the processor on pipeline hazards.

The following subtasks shall be solved:

• Literature survey on the published pipeline structure of the given core.
• Setting up an environment to get access to the processor core on assembly level
• Write assembly programs to provoke pipeline problems
• Check the behavior of the core to those programs. Try to find out the specialities of the processor pipeline

Hello Sulema Jamil,

I'm sorry but I would seem not to be able to help you.

I cannot still catch you intention.

Best regards,

Yasuhiko Koumoto.